Container washing machine

Abstract

A container washing machine includes an inner container, an upper rack, a main pipe, a lower rack, an upper rotating spray arm, and a lower rotating spray arm. The container washing machine defines a height direction. The inner container includes a washing chamber and an opening. The upper rack is detachably mounted on the inner container. The lower rack is disposed in the washing chamber. The upper rotating spray arm is connected to and communicated with the main pipe. The upper rotating spray arm is rotatable around the main pipe. The lower rotating spray arm is communicated with the main pipe. The lower rotating spray arm is rotatable around the main pipe. When the upper rack is mounted on the inner container, the upper rack and the upper rotating spray arm are separately disposed.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a field of field of container cleaning technology, and in particular to a container washing machine.BACKGROUND

[0002] Containers such as baby bottles are everyday containers for holding milk or drinking water. A baby bottle generally consists of two main parts, which are respectively a bottle body and a nipple. Tools for cleaning the baby bottles comprise handheld cleaners, brushes, and bottle washing machines.

[0003] Conventional container washing machines typically comprise a water supply hose, nozzles fixed to the water supply hose, an upper rack, and a lower rack. The upper rack is configured to hold one or more nipples. The lower rack is configured to hold one or more bottle bodies. The water supply hose supplies water to the nozzles. The nozzles are configured to clean one or more containers, such as the one or more nipples on the upper rack and one or more containers, such as the one or more bottle bodies on the lower rack. Some of the nozzles are directly fixed to the upper rack and are unable to be removed, making it inconvenient to clean and maintain the upper rack and connection joints fixed to the upper rack.SUMMARY

[0004] The present disclosure provides a container washing machine, and an upper rack thereof is detachably mounted on an inner container thereof, so that it is convenient to clean the upper rack and an upper rotating spray arm.

[0005] The container washing machine comprises an inner container, an upper rack, a main pipe, a lower rack, an upper rotating spray arm, and a lower rotating spray arm.

[0006] The container washing machine defines a height direction. The inner container comprises a washing chamber and an opening. The upper rack is detachably mounted on the inner container. The lower rack is disposed in the washing chamber. At least a portion of the upper rack is capable of being placed in the washing chamber from the opening, and the upper rack is capable of being taken out of the inner container from the opening. The upper rotating spray arm is connected to and communicated with the main pipe. The upper rotating spray arm is rotatable around the main pipe. The lower rotating spray arm is connected to and communicated with the main pipe. The lower rotating spray arm is rotatable around the main pipe. When the upper rack is mounted on the inner container, the upper rack, the upper rotating spray arm, the lower rack, and the lower rotating spray arm are sequentially disposed in the height direction from top to bottom, with the upper rack and the upper rotating spray arm being separately disposed.

[0007] In the container washing machine of the present disclosure, cleaning and maintenance of the upper rack and the upper rotating spray arm are convenient. In the prior art, when nozzles are directly fixed to the upper rack and unable to be disassembled, application scenarios are limited. For example, in the prior art, when the upper rack is not needed to hold containers, the upper rack is unable to be removed; otherwise, the nozzles fixed to the upper rack are detached together with the upper rack, preventing the nozzles from cleaning one or more containers on the lower rack, potentially resulting in inadequate cleaning. Instead, in the present disclosure, the upper rotating spray arm and the main pipe are mounted independently and are not fixed by the upper rack. A user is able to assemble or remove the upper rack according to their needs. Even if the user removes the upper rack, the upper rotating spray arm is still able to clean the one or more containers on the lower rack, thereby ensuring cleanliness of the one or more containers on the lower rack.BRIEF DESCRIPTION OF DRAWINGS

[0008] FIG. 1 is a perspective schematic diagram of a container washing machine according to one embodiment of the present disclosure.

[0009] FIG. 2A is a partial schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0010] FIG. 2B is a cross-sectional schematic diagram of the container washing machine taken along a line A-A shown in FIG. 2A.

[0011] FIG. 2C is another partial schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0012] FIG. 2D is another partial schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0013] FIG. 3A is another partial schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0014] FIG. 3B is a cross-sectional schematic diagram of the container washing machine taken along a line B-B shown in FIG. 3A.

[0015] FIG. 3C is another partial schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0016] FIG. 3D is another partial schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0017] FIG. 4 is a schematic diagram of an inner container according to one embodiment of the present disclosure.

[0018] FIG. 5A is a schematic diagram of an upper cover according to one embodiment of the present disclosure.

[0019] FIG. 5B is a schematic diagram of the upper cover according to one embodiment of the present disclosure.

[0020] FIG. 5C is a cross-sectional schematic diagram of the upper cover taken along a line C-C shown in FIG. 5B.

[0021] FIG. 6 is a schematic diagram of an upper rotating spray arm and a main pipe according to one embodiment of the present disclosure.

[0022] FIG. 7 is a schematic diagram of the upper rotating spray arm and a lower rotating spray arm according to one embodiment of the present disclosure.

[0023] FIG. 8 is a schematic diagram of the upper rotating spray arm and the lower rotating spray arm according to one embodiment of the present disclosure.

[0024] FIG. 9A is a schematic diagram of the upper rotating spray arm and the main pipe according to one embodiment of the present disclosure.

[0025] FIG. 9B is a cross-sectional schematic diagram of the upper rotating spray arm and the main pipe taken along a line D-D shown in FIG. 9A.

[0026] FIG. 10 is another schematic diagram of the upper rotating spray arm and the main pipe according to one embodiment of the present disclosure.

[0027] FIG. 11 is a cross-sectional schematic diagram of the container washing machine shown in a configuration of use according to one embodiment of the present disclosure, where baby bottles are placed therein.

[0028] FIG. 12 is a schematic diagram of the main pipe and a lower rack according to one embodiment of the present disclosure.

[0029] FIG. 13 is an enlarged schematic diagram of portion X shown in FIG. 12.

[0030] FIG. 14 is a schematic diagram of the lower rack according to one embodiment of the present disclosure.

[0031] FIG. 15 is another schematic diagram of the lower rack according to one embodiment of the present disclosure.

[0032] FIG. 16 is another schematic diagram of the lower rack according to one embodiment of the present disclosure.

[0033] FIG. 17 is a partial schematic diagram of the lower rack according to one embodiment of the present disclosure.

[0034] FIG. 18 is a cross-sectional schematic diagram of the lower rack shown in a configuration of use, where a bottle body is placed thereon.

[0035] FIG. 19 is another cross-sectional schematic diagram of the lower rack shown in the configuration of use, where the bottle body is placed thereon.

[0036] FIG. 20 is another cross-sectional schematic diagram of the lower rack shown in the configuration of use, where the bottle body is placed thereon.

[0037] FIG. 21 is another cross-sectional schematic diagram of the lower rack shown in the configuration of use, where the bottle body is placed thereon.

[0038] FIG. 22 is another cross-sectional schematic diagram of the lower rack shown in the configuration of use, where bottle bodies are placed thereon.

[0039] FIG. 23 is another cross-sectional schematic diagram of the lower rack shown in the configuration of use, where the bottle bodies are placed thereon.

[0040] FIG. 24 is a partial schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0041] FIG. 25 is another partial schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0042] FIG. 26 is a partial cross-sectional schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0043] FIG. 27 is an enlarged schematic diagram of portion Y shown in FIG. 26.

[0044] FIG. 28 is another partial cross-sectional schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0045] FIG. 29 is another partial cross-sectional schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0046] FIG. 30 is an enlarged schematic diagram of portion Z shown in FIG. 29.

[0047] FIG. 31 is a schematic diagram of a breather according to one embodiment of the present disclosure.

[0048] FIG. 32 is another schematic diagram of the breather according to one embodiment of the present disclosure.

[0049] FIG. 33 is a block diagram of an electrical connection between an electrical control device and a drain component.

[0050] FIG. 34 is a schematic diagram of a lower rotating spray arm according to one embodiment of the present disclosure.

[0051] FIG. 35 is another schematic diagram of the lower rotating spray arm according to one embodiment of the present disclosure.

[0052] FIG. 36 is another schematic diagram of the lower rotating spray arm according to one embodiment of the present disclosure.

[0053] FIG. 37 is another schematic diagram of the lower rotating spray arm according to one embodiment of the present disclosure.

[0054] FIG. 38 is another schematic diagram of the lower rotating spray arm according to one embodiment of the present disclosure.

[0055] FIG. 39 is a schematic diagram of the lower rotating spray arm shown in a configuration of use.

[0056] FIG. 40 is a cross-sectional schematic diagram of the lower rotating spray arm shown in the configuration of use.

[0057] FIG. 41 is another cross-sectional schematic diagram of the lower rotating spray arm shown in the configuration of use.

[0058] FIG. 42 is another schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0059] FIG. 43 is a schematic diagram of the upper rack according to one embodiment of the present disclosure.

[0060] FIG. 44 is an exploded schematic diagram of the upper rack according to one embodiment of the present disclosure.

[0061] FIG. 45 is a side schematic diagram of the upper rack according to one embodiment of the present disclosure.

[0062] FIG. 46 is a schematic diagram of a rack body according to one embodiment of the present disclosure.

[0063] FIG. 47 is a schematic diagram of the rack body according to one embodiment of the present disclosure.

[0064] FIG. 48 is an enlarged schematic diagram of portion A shown in FIG. 47.

[0065] FIG. 49 is a schematic diagram of the rack body according to one embodiment of the present disclosure.

[0066] FIG. 50 is an enlarged schematic diagram of portion B shown in FIG. 49.

[0067] FIG. 51 is a schematic diagram of the rack body according to one embodiment of the present disclosure.

[0068] FIG. 52 is a schematic diagram of a support segment according to one embodiment of the present disclosure.

[0069] FIG. 53 is another schematic diagram of the support segment according to one embodiment of the present disclosure.

[0070] FIG. 54 is another schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0071] FIG. 55 is another schematic diagram of the container washing machine according to one embodiment of the present disclosure.DETAILED DESCRIPTION

[0072] As shown in FIGS. 1-3D, a container washing machine 10 of the present disclosure defines a height direction F1 and a width direction F2. The height direction F1 and the width direction F2 are approximately perpendicular to each other. In some cases, the width direction F2 is understood as a length direction of the container washing machine 10.

[0073] The container washing machine 10 comprises an inner container 110, an upper rack 210, a main pipe 410, a lower rack 220, an upper rotating spray arm 310, and a lower rotating spray arm 320. The upper rack 210 is detachably mounted on the inner container 110. At least a portion of the upper rack 210 is placed into a washing chamber 112 through an opening 114 of the inner container 110, and the upper rack 210 is allowed to be removed from the inner container 110 through the opening 114.

[0074] Compared to the prior art where nozzles and an upper rack are directly fixed and non-detachable, the embodiment facilitates cleaning and maintenance of the upper rack 210 and the upper rotating spray arm 310. In the prior art, when nozzles are directly fixed to the upper rack and unable to be disassembled, application scenarios are limited. For example, in the prior art, when the upper rack is not needed to hold containers, the upper rack is unable to be removed; otherwise, the nozzles fixed to the upper rack are detached together with the upper rack, preventing the nozzles from cleaning one or more containers on the lower rack, potentially resulting in inadequate cleaning. Instead, in the present disclosure, the upper rotating spray arm 310 and the main pipe 410 are mounted independently and are not fixed by the upper rack 210. A user is able to assemble or remove the upper rack according to their needs.

[0075] When the upper rack 210 is mounted on the inner container 110, the upper rack 210, the upper rotating spray arm 310, the lower rack 220, and the lower rotating spray arm 320 are sequentially disposed from top to bottom along the height direction F1. Furthermore, the upper rack 210 is independent from the main pipe 410 and the upper rotating spray arm 310. In other words, the upper rack is spaced apart from and does not contact the main pipe 410 and the upper rotating spray arm 310, which avoids the upper rack 210 from contacting the main pipe 410 and the upper rotating spray arm 310. Therefore, the upper rack 210 is not blocked, which increases the cleaning area of the upper rack 210 when the upper rotating spray arm 310 cleans the upper rack 210. Additionally, the upper rack 210 is independent from the main pipe 410 and the upper rotating spray arm 310, which facilitates a detachment and installation of the upper rack 210 relative to the inner container 110. The upper rack 210 is a rack designed to hold one or more nipples of one or more baby bottles.

[0076] In one embodiment, the upper rack 210 is directly mounted on an edge of the opening 114 of the inner container 110. In another embodiment, a groove structure is formed on an inner surface of the inner container 10 close to the opening 114, and the groove structure forms a step. Alternatively, a protruding step is disposed on the inner surface close to the opening 114 of the inner container 10. The upper rack 210 is then mounted on the step formed on the inner surface of the inner container 110.

[0077] The lower rack 220 is disposed inside the washing chamber 112. The lower rack 220 is detachably or non-detachably mounted on the inner surface of the inner container 110. The lower rack 220 is a rack designed to hold one or more bottle bodies and / or one or more bottle accessories of the one or more containers.

[0078] The inner container 110 provides the washing chamber 112 for the container washing machine 10 and serves as a mounting body for components of the container washing machine 10. A material of the inner container 110 comprises, but is not limited to, plastic and metal. As shown in FIG. 4, side walls of the inner container 110 are connected around edges of the bottom wall 111e to enclose and form the washing chamber 112. The washing chamber 112 defines the opening 114. For example, the side walls of the inner container 110 comprise, but are not limited to, a first side wall 111a, a second side wall 111b, a third side wall 111c, and a fourth side wall 111d. The first side wall 111a, the second side wall 111b, the third side wall 111c, and the fourth side wall 111d are sequentially connected end to end.

[0079] In one embodiment, the upper rotating spray arm 310 is detachably connected to the main pipe 410. A detachable connection method thereof comprises, but is not limited to: (1) a direct detachable connection; (2) an indirect detachable connection via a connecting pipe 330.

[0080] As shown in FIGS. 6 and 7, at least one first fastener 318 is disposed on one of the upper rotating spray arm 310 and the main pipe 410, and a second fastener 414 is disposed on the other one of the upper rotating spray arm 310 and the main pipe 410, and the at least one first fastener 318 and the second fastener 414 are detachably connected, so that the upper rotating spray arm 310 and the main pipe 410 are detachably connected. The upper rotating spray arm 310 comprises a first sub-spray arm 311 and a second sub-spray arm 312. The at least one first fastener 318 comprises two first fasteners 318. The first sub-spray arm 311 and the second sub-spray arm 312 are respectively connected to two ends of a rotating portion 313 of the upper rotating spray arm 310. The two first fasteners 318 are respectively disposed on the first sub-spray arm 311 and the second sub-spray arm 312. Each of the first fasteners 318 comprises a first elastic section 318a and a second elastic section 318b connected to the first elastic section 318a. For each of the first fasteners 318, the first elastic section 318a and the second elastic section 318b are bent relative to each other, so as to form a bending structure 318c at a connecting point thereof. Specifically, a first end of the first elastic section 318a on the first sub-spray arm 311 is fixedly connected to the first sub-spray arm 311, a first end of the first elastic section 318a on the second sub-spray arm 312 is fixedly connected to the second sub-spray arm 312, and a second end of each first elastic section 318a is bent and connected to a corresponding second elastic section 318b. Each first elastic section 318a is approximately perpendicular to the first sub-spray arm 311 and the second sub-spray arm 312. Each second elastic section 318b is inclined relative to the rotating portion 313, and a first end of each second elastic section 318b connected to a corresponding first elastic section 318a is closer to the rotating portion 313 than a second end away from the corresponding first elastic section 318a. Correspondingly, the main pipe 410 comprises a first pipe body 411 and a second pipe body 412. The first pipe body 411 is communicated with the second pipe body 412. An outer diameter of the first pipe body 411 is greater than an outer diameter of the second pipe body 412, thereby forming an arc-shaped step 413 or an inclined step 413 on an outer surface at a connecting joint of the first pipe body 411 and the second pipe body 412. Furthermore, an inner diameter of the first pipe body 411 is greater than an inner diameter of the rotating portion 313. The rotating portion 313 is disposed inside the first pipe body 411, and an inner diameter of the rotating portion 313 is approximately the same as the inner diameter of the second pipe body 412. The second fastener 414 comprises a protruding ring 414a disposed around the outer surface of the first pipe body 411.

[0081] A connection process of the upper rotating spray arm 310 and the main pipe 410 is as follows. The rotating portion 313 is aligned with an opening of the first pipe body 411, and then the rotating portion 313 is inserted into the first pipe body 411. Simultaneously, each second elastic section 318b is positioned on an outside of the first pipe body 411. The rotating portion 313 continues to insert into the first pipe body until a portion of each second elastic section 318b close to the corresponding first elastic section 318a contacts an outer surface of the first pipe body 411. As the rotating portion 313 is further inserted into the first pipe body 411, each first elastic section 318a and each second elastic section 318b deform under force, causing each bending structure 318c to snap onto the protruding ring 414a. Thus, the upper rotating spray arm 310 is rotatable around the main pipe 410 through a connection between each bending structure 318c and the protruding ring 414a.

[0082] As shown in FIG. 10, the upper rotating spray arm 310 is detachably connected to the connecting pipe 330, and the upper rotating spray arm 310 is rotatable around the connecting pipe 330 and the main pipe 410 as a rotating axis. The connecting pipe 330 and the main pipe 410 are connected by one of connection methods, such as a snap-fit connection, a screw connection, an adhesive connection, or welding. A detachable connection method between the upper rotating spray arm 310 and the connecting pipe 330 may refer to the detachable connection method between the upper rotating spray arm 310 and the main pipe 410 shown in FIG. 6, which is not repeated described herein.

[0083] A non-detachable connection method between the upper rotating spray arm 310 and the main pipe 410 comprises, but is not limited to, structures that enable a rotation of the upper rotating spray arm 310 relative to the main pipe 410 are disposed inside the main pipe 410. For instance, as shown in FIGS. 9A-9B, a groove 414b is disposed on an inner wall of the main pipe 410, and a protrusion 318d is disposed on an outer surface of the rotating portion 313. The protrusion 318d is disposed in the groove 414b and is rotatable in the groove 414b. An example of a connection process is as follows. The main pipe 410 is divided into two portions, the rotating portion 313 is placed at a predetermined position inside the main pipe 410, and then the two portions of the main pipe 410 are welded together. Specifically, the groove 414b is disposed on an inner wall of the first pipe body 411 and is close to the second pipe body 412.

[0084] As shown in FIG. 8, the lower rotating spray arm 320 and the main pipe 410 are detachably or non-detachably connected. A connection relationship between the lower rotating spray arm 320 and the main pipe 410 may refer to the connection method between the upper rotating spray arm 310 and the main pipe 410, which is not repeated herein.

[0085] As shown in FIGS. 6-8, the first sub-spray arm 311 and the second sub-spray arm 312 comprise first spray holes 314, while a third sub-spray arm 321 and a fourth sub-spray arm 322 of the lower rotating spray arm 320 comprise second spray holes 324. In one embodiment, opening directions of the first spray holes 314 and opening directions of the second spray holes 324 face upward along the height direction F1. At least part of the opening directions of the first spray holes and at least part of the opening directions of the second spray holes are tilted relative to the height direction F1. In one embodiment, the opening directions of at least part of the first spray holes 214 on the first sub-spray arm 311 are different, the opening directions of at least part of the first spray holes 314 on the second sub-spray arm 312 are different, the opening directions of at least part of the second spray holes 324 on the third sub-spray arm 321 are different and the opening directions of at least part of the second spray holes 324 on the fourth sub-spray arm 322 are different.

[0086] In one embodiment, the first sub-spray arm 311 defines a first power hole 316, and the second sub-spray arm 312 defines a second power hole 317. An opening direction of the first power hole 316 is at least partially opposite to an opening direction of the second power hole 317. The third sub-spray arm 321 defines a third power hole 326, and the fourth sub-spray arm 322 defines a fourth power hole 327. An opening direction of the third power hole 326 is at least partially opposite to an opening direction of the fourth power hole 327. In one embodiment, the opening direction of the first power hole 316 partially faces downward along the height direction F1, and the opening direction of the second power hole 317 partially faces downward along the height direction F1. In another embodiment, the opening direction of the first power hole 316 partially faces downward along the height direction F1, while the opening direction of the second power hole 317 is perpendicular to the height direction F1. In yet another embodiment, the opening direction of the first power hole 316 and the opening direction of the second power hole 317 are perpendicular to the height direction F1 and are opposite to each other. For instance, the first power hole 316 is disposed on one side of the first sub-spray arm 311, and the second power hole 317 is disposed on one side of the second sub-spray arm 312. In other alternative embodiments, the lower rotating spray arm 320 comprises only one power hole, that is, the third sub-spray arm 321 comprises the third power hole 326 or the fourth sub-spray arm 322 comprises the fourth power hole 327. In other alternative embodiments, the upper rotating spray arm 310 comprises only one power hole, that is, the first sub-spray arm 311 comprises the first power hole 316, or the second sub-spray arm 312 comprises the second power hole 317.

[0087] In one embodiment, the opening direction of the third power hole 326 partially faces downward along the height direction F1, and the opening direction of the fourth power hole 327 partially faces downward along the height direction F1. In another embodiment, the opening direction of the third power hole 326 partially faces downward along the height direction F1, while the opening direction of the fourth power hole 327 is perpendicular to the height direction F1. In yet another embodiment, the opening direction of the third power hole 326 and the opening direction of the fourth power hole 327 are perpendicular to the height direction F1 and are opposite to each other. For example, the third power hole 326 is disposed on one side of the third sub-spray arm 321, and the fourth power hole 327 is disposed on one side of the fourth sub-spray arm 322.

[0088] When washing liquid is injected, the power holes (i.e., the four power holes mentioned above), the power holes provide power to the upper rotating spray arm 310 and the lower rotating spray arm 320 and drive the upper rotating spray arm 310 and the lower rotating spray arm 320 to rotate. When the washing liquid is injected, the spray holes are configured to spray the washing liquid onto the clean items inside the washing chamber 112, such as the one or more baby bottles.

[0089] In one embodiment, each sub-spray arm of the upper rotating spray arm 310 comprises at least four spray holes spraying in different directions to ensure a spray coverage. Further, each sub-spray arm of the upper rotating spray arm 310 comprises at least one power hole to ensure rotation. Each sub-spray arm of the lower rotating spray arm 320 comprises at least three spray holes facing upward to ensure a spray coverage. Further, each sub-spray arm of the lower rotating spray arm 320 comprises at least one power hole defined on one side thereof to ensure rotation. As shown in FIG. 10, the first sub-spray arm 311 comprises two first power holes 316.

[0090] The upper rotating spray arm 310 and the lower rotating spray arm 320 are components that serve functions of water intake and spraying. The upper rotating spray arm 310 and the lower rotating spray arm 320 are driven to rotate by water power while spraying the water to wash items. The main pipe 410 is a pipe body configured to convey the washing liquid.

[0091] As shown in FIGS. 5A-5C, the container washing machine 10 further comprises an upper cover 130. The upper cover 130 is configured to cover or expose the opening 114 of the inner container 110. For instance, the upper cover 130 comprises a handle 133 and a cover portion 131. The cover portion 131 is transparent. The handle 133 is disposed on an outer surface of the cover portion 131, is close to a center or located at the center of the cover portion 131. The upper cover 130 further comprises exhaust holes 132 penetrating the cover portion 131. The upper cover 130 is a sealing cover with the exhaust holes 132 and is configured to discharge steam during a drying process of the one or more baby bottles. The exhaust holes 132 are inclined relative to the height direction F1, thereby realizing an overflow prevention design. The steam is discharged from the center of the cover portion 131 through the exhaust holes 132 toward two sides of the cover body. The exhaust holes 132 on two sides are inclined, so that when the washing liquid from any sub-spray arm splashes into the exhaust holes 132, the washing liquid may flow back into the inner container 110 along sloped surfaces of the exhaust holes.

[0092] One or more fans 500 are disposed on an outer side of the inner container 110. For instance, at least two fans 500 are provided. The container washing machine 10 further comprises a housing 120 disposed around a periphery of the side walls of the inner container 110. The housing 120 covers the at least two fans 500, providing protection for the at least two fans 500 and other components therein. The at least two fans 500 are configured to introduce air into an interior of the inner container 110. Specifically, each of fans 500 comprises an air inlet 502 and an air outlet 504 communicated with the air inlet 502, and the air outlet 504 thereof is connected to a predetermined position. Correspondingly, the inner container 110 defines at least two air inlets 116 penetrating the first side wall 111a. Each air outlet 504 is communicated with a corresponding one of the air inlets 116 of the inner container 110. The at least two fans 500 are configured to convey air to a predetermined position inside the inner container 110. The predetermined position of the inner container 10 in an inlet 222 of at least one air duct 221 on the lower rack 220 disposed inside the washing chamber 112, or the predetermined position of the inner container 10 is other positions within the washing chamber 112 of the inner container 110. It should be understood that the predetermined position is set according to actual needs and is not limited thereto. Specifically, the air outlet 504 of each of the fans 500 is communicated with the corresponding one of the air inlets 116, and each of the air inlets 116 is communicated with the inlet 222 of the at least one air duct 221. For example, a size of each of the air inlets 116 is greater than a size of the at least one air duct 221. Furthermore, each of the air inlets 116 comprises a first port 116a and a second port 116b. Each first port 116a is communicated with the inlet 222 of the at least one air duct 221, and each second air inlet 116b is directly communicated with the washing chamber 112. The at least one air duct 221 comprises one or two air ducts 221.

[0093] Each of the fans 500 is capable of conveying air into the at least one air duct 221 of the lower rack 220 through each first port 116a, so as to dry the one or more bottle bodies or the one or more bottle accessories placed on the lower rack 220. Each of the fans 500 is also capable of directly conveying the air into the washing chamber 112 through each second port 116b to dry items within the washing chamber 112, such as the one or more nipples on the upper rack 210. Furthermore, the container washing machine 10 further comprises a first heating device 610 disposed outside the inner container 110. The first heating device 610 is configured to heat the air conveyed by the at least two fans 500. In one scenario, the first heating device 610 is disposed on one of the at least two fans 500. The first heating device 610 is mounted inside an air duct of the one of the at least two fans 500 (i.e., between the air inlet 502 and the air outlet 504 thereof), so that the air conveyed from the air outlet 504 of the one of the at least two fans 500 is hot air.

[0094] The at least two fans 500 are mounted on an outer surface of one or more side walls of the inner container 110. For example, two fans 500 are provided and are mounted on the first side wall 111a of the inner container 10. The two fans 500 are disposed side by side along the width direction F2. A projection of the two fans 500 onto the inner container 110 completely falls within the first side wall 111a of the inner container 110, ensuring that the two fans 500 do not exceed the edges of the inner container 110. In this way, a space of the inner container 110 is efficiently used. A total width of the two fans 500 is approximately equal to a width of the inner container 110. Compared to two fans having a larger total width, the two fans in the embodiment save space. Compared to two fans having a smaller total width, the two fans in the embodiment avoid wasting space. The two fans 500 comprise, but are not limited to, a first fan 510 and a second fan 520.

[0095] The edge of the opening 114 of the inner container 110 protrudes outward to form shielding portions. Specifically, an edge of the first side wall 111a of the inner container 110a protrudes outward to form a first shielding portion 113a. The first side wall 111a and the first shielding portion 113a jointly define a first mounting space 118a. The two fans 500 are mounted in the first mounting space. Similarly, an edge of the second side wall 111b of the inner container 110a protrudes outward to form a second shielding portion 113b. The second side wall 111b and the second shielding portion 113b jointly define a second mounting space 118b. The container washing machine 10 further comprises a water tank 440 of a water supply device 400. The water tank 440 is mounted in the second mounting space 118b and is configured to store the washing liquid, such as washing water. It is understood that the water tank 440 is communicated with the main pipe 410 and supplies the washing liquid to the main pipe 410. Furthermore, the container washing machine 10 comprises a display 750. The display 750 is mounted in the second mounting space 118b with a display surface thereof facing away from the second side wall 111b, so that the display surface is exposed and is allowed to be observed by the user. In one optional configuration, the display 750 is a touch screen triggered by touch control operations of the user. Specifically, the first mounting space 118a is opposite to the second mounting space 118b.

[0096] Devices, such as an electrical control device 710, a first water pump 420 of the water supply device 400, and a second water pump 430 of the water supply device 400, are disposed on an outer surface of the bottom wall 111e of the inner container 10. The container washing machine 10 further comprises a base 140 disposed below the bottom wall 111e along the height direction F1. The base 140 is configured to cover the electrical control device 710, the first water pump 420, and the second water pump 430. The base 140 is connected to the bottom wall 111e and the housing 120. For instance, outer surfaces of edges of the base 140 are flush with outer surfaces of edges of the housing 120.

[0097] As shown in FIG. 4, a water inlet hole 119 is defined on the inner container 110. The water inlet hole 119 communicates the main pipe 410 with the washing liquid. In one embodiment, the water inlet hole 119b is formed on the bottom wall 111e. Optionally, the water inlet hole 119b is formed on a center of the bottom wall 111e of the inner container 10. Specifically, the main pipe 410 is connected to the bottom wall 111e, and a passage of the main pipe 410 is aligned with and communicated with the water inlet hole 119b. A mounting structure 119a is disposed on the bottom wall 111e of the inner container 10, and the mounting structure 119a is fixedly connected to the main pipe 410. The second water pump 430 is connected to and communicated with the water tank 440 via a first hose 451. The second water pump 430 is connected to and communicated with the inner container 110 via a second hose 452. The second water pump 430 is configured to drive the washing liquid from the water tank 440 into the washing chamber 112 of the inner container 110. The first water pump 420 is configured to pressurize the washing liquid in the washing chamber 112 and pump the washing liquid into the main pipe 410. The washing liquid is then conveyed through the main pipe 410 to the lower rotating spray arm 320 and the upper rotating spray arm 310. The second water pump 430 is any pump capable of pumping and discharging water, and the first water pump 420 is any pump capable of pumping, discharging, and pressurizing water.

[0098] Furthermore, the container washing machine 10 further comprises a second heating device 630 configured to heat the washing liquid driven by the second water pump 430. The electrical control device 710 is electrically connected to the two fans 500, the display 750, the first heating device 610, the second heating device 630, the first water pump 420, and the second water pump 430, (e.g., via wires). The electrical control device 710 comprises a printed circuit board (PCB). The PCB is configured to control these components and is fixed to the bottom wall 111e by screws. It should be noted that the electrical control device 710 is alternatively disposed on one of the side walls of the inner container 110.

[0099] Furthermore, the container washing machine 10 further comprises a drain component 460. The drain component 460 is connected to a drain hole 117a of the inner container 110 and is configured to discharge the washing liquid from the washing chamber 112 to an outside. The container washing machine 10 further comprises a drain pipe 453. The drain pipe 453 is sleeved with a drain portion 117 disposed on a bottom portion of the inner container 110. The drain portion 117 is communicated with the drain hole 117a. The drain component 460 is disposed on the drain pipe 453 to control opening and closing of the drain pipe 453. As shown in FIG. 2B, the washing liquid first flows from the drain hole 117a of the washing chamber 112 into the drain portion 117, then into the drain pipe 453. When the drain component 460 is open, the washing liquid flows along a drain direction F3 to a drain outlet 453a and is then discharged. The drain component 460 is a solenoid valve capable of controlling opening and closing of the drain pipe. The drain component 460 is electrically connected to the electrical control device 710. In one embodiment, the drain component 460 is a drain pump configured to discharge the washing liquid from the drain pipe 453 when powered. In another embodiment, the drain component 460 is a drain valve that is the solenoid valve capable of controlling opening and closing. By opening and closing the drain pipe 453, the drain valve allows the washing liquid in the drain pipe 453 to be discharged by gravity.

[0100] For instance, the first water pump 420 is directly fixed to a mounting shell 115 disposed on the bottom portion of the inner container 110. The first water pump 420 directly pumps water within a space defined by the mounting shell 115 to provide stronger power.

[0101] Furthermore, the mounting shell 115 is communicated with the drain portion 117 through the drain hole 117a. The drain portion 117 and the drain component 460 are communicated via the drain pipe 453. The drain portion 117 and the first water pump 420 are disposed adjacent to each other.

[0102] In the height direction F1, a position of an inner bottom surface of the mounting shell 115 is defined as a first water level point P1, and a position of the drain hole 117a is defined as a second water level point P2. In the height direction F1, the first water level point Pl is lower than the second water level point P2. When the drain component 460 is open, the washing liquid in the inner container 110 is discharged sequentially through the mounting shell 115, the drain hole 117a, the drain portion 117, and the drain pipe 453 under the action of a force, while a portion of the washing liquid remains inside the mounting shell 115 to prevent the first water pump 420 from running dry and being damaged. The force is an external driving force or gravity.

[0103] It should be noted that when the washing liquid is introduced inside the inner container 110, the lower rack 220 and each air inlet 116 are located above the washing liquid. As shown in FIG. 2C, the container washing machine 10 further comprises a liquid level sensor 730 electrically connected to the electrical control device 710. The liquid level sensor 730 is mounted inside the inner container 110 to detect a level of the washing liquid in the inner container 110. The liquid level sensor 730 is a sensor capable of non-contact water level sensing.

[0104] As shown in FIG. 11, an exemplary operation process of the water supply device 400 in the embodiment is as follows. The washing liquid from the water tank 440 is pumped into the inner container 110 by the second water pump 430. During this process, the washing liquid is heated by passing through the second heating device 630. Heated washing liquid is pressurized by the first water pump 420 and then pumped into the water inlet 415 of the main pipe 410 from the water inlet hole 119b of the inner container 110. A portion of the washing liquid then enters the lower rotating spray arm 320 from a diverter port 416 of the main pipe 410. After entering the lower rotating spray arm 320, the washing liquid is sprayed through the power holes and the spray holes of the lower rotating spray arm 320. Water columns sprayed by the power holes of the lower rotating spray arm 320 provide a motive force to rotate the lower rotating spray arm 320. The spray holes of the lower rotating spray arm 320 spray the washing liquid upwards to clean the one or more bottle bodies 21 of the one or more baby bottles 20 and the one or more bottle accessories placed on the lower rack 220. Remaining washing liquid in the main pipe 410 moves upward and enters the water inlet 319 of the upper rotating spray arm 310 through a water outlet 417. After entering the upper rotating spray arm 310, the washing liquid is sprayed through the power holes and the spray holes of the upper rotating spray arm 310. The water columns sprayed by the power holes of the upper rotating spray arm 310 provide a motive force to rotate the upper rotating spray arm 310 and further spray downward to clean the one or more bottle bodies 21 and the one or more bottle accessories placed on the lower rack 220. The spray holes of the upper rotating spray arm 310 spray the washing liquid upwards to clean the one or more nipples 22 of the one or more baby bottles 20 placed on the upper rack 210. After spraying, all the washing liquid flows back to the bottom portion of the inner container 110 under gravity and is discharged through the drain component 460. After all the washing liquid is drained, the container washing machine enters a drying stage. At this point, the drain component 460 is closed, and the two fans 500 start working. Hot air from the first fan 510 and / or the second fan 520 is blown out from the air outlet 504. Part of the hot air enters the at least one air duct 201 through the inlet 222 of the lower rack 220, while the other part of the hot air enters the washing chamber 112 directly through each air inlet 116 of the inner container 110. The hot air entering the at least one air duct 201 of the lower rack 220 exits from the air outlet of the lower rack 220 and performs hot-air drying on inner walls of the one or more bottle bodies 21 and the one or more bottle accessories placed on the lower rack 220. The hot air that directly enters the washing chamber 112 directly dries inner walls of the inner container 110 and the one or more nipples on the upper rack 210. Water vapor generated during the drying process is discharged into the air through the exhaust holes 132 on the upper cover 130.

[0105] Furthermore, the upper rotating spray arm 310 and the lower rotating spray arm 320 are rotatable around the main pipe 410. The lower rotating spray arm 320 is close to a bottom end of the main pipe 410, while the upper rotating spray arm 310 is close to a top end of the main pipe 410. It should be noted that in practical applications, during the rotation of the upper rotating spray arm 310, the upper rotating spray arm 310 may shake the main pipe 410, which in turn affects the stable rotation of the upper rotating spray arm 310 around the main pipe 410. Therefore, as shown in FIGS. 12 and 13, in the embodiment of the present disclosure, a wall thickness of a portion of the main pipe 410 close to the bottom end is designed to be greater than a wall thickness of a portion of the main pipe 410 close to the top end. In this way, the stability of the main pipe 410 is improved, thereby enhancing the stability during the rotation of the upper rotating spray arm 310. Furthermore, in the embodiment of the present disclosure, the lower rack 220 contacts the main pipe, and a mounting position of the lower rack 220 is adjacent to a mounting position of the lower rotating spray arm 320, which further constrains and enhances the stability of the main pipe 410.

[0106] Furthermore, the main pipe 410 comprises, from bottom to top along the height direction F1, a first pipe segment 410a, a second pipe segment 410b, a third pipe segment 410c, and a fourth pipe segment 410f. The second pipe segment 410b is configured to connect to the lower rotating spray arm 320 to allow the rotation of the lower rotating spray arm 320. The third pipe segment 410c is configured to contact the lower rack 220 and is positioned by the lower rack 220 to maintain the stability of the main pipe 410. The fourth pipe segment 410f is configured to connect to the upper rotating spray arm 310 to allow the rotation of the upper rotating spray arm 310.

[0107] Specifically, an outer diameter of the first pipe segment 410a, an outer diameter of the second pipe segment 410b, an outer diameter of the third pipe segment 410c, and an outer diameter of the fourth pipe segment 410f decrease sequentially, which gives the main pipe 410 an overall structure where an upper portion thereof has a smaller outer diameter than a lower portion thereof, thereby enhancing the stability of the main pipe 410 and consequently improving the stability of the upper rotating spray arm 310 during rotation.

[0108] The lower rack 220 comprises a mounting hole 224 for the main pipe 410 to pass through. The lower rack 220 further comprises a limiting ring 223 defining the mounting hole 224. An inner diameter of the limiting ring 223 is approximately equal to the outer diameter of the third pipe segment 410c. For instance, an outer surface of the pipe wall 410c1 of the third pipe segment 410c fully abuts against an inner surface of the limiting ring 223.

[0109] Furthermore, the main pipe 410 further comprises a protruding ring 418. The protruding ring 418 is disposed on the second pipe segment 410b or is disposed at a connection junction between the second pipe segment 410b and the third pipe segment 410c. The limiting ring 223 is positioned on a top surface of the protruding ring 418. Thus, a weight of a portion of the lower rack 220 acts directly on the protruding ring 418, which enhances the stability of the main pipe 410, particularly during the rotation of the upper rotating spray arm 310, ensuring that the upper rotating spray arm 310 is rotatable stably around the main pipe 410.

[0110] Furthermore, the main pipe 410 further comprises a transition segment 410d and a connecting segment 410e. The connecting segment 410e is connected between the transition segment 410d and the fourth pipe segment 410f, while the transition segment 410d is connected between the third pipe segment 410c and the connecting segment 410e. A thickness of a pipe wall 410d1 of the transition segment 410d gradually increases from a first end thereof connected to the connecting segment 410e to a second end thereof connected to the third pipe segment 410c. The thickness of the pipe wall 410d1 of the transition segment 410d is greater than a thickness L1 of a pipe wall 410el of the connecting segment 410e and is less than a thickness L2 of a pipe wall 410c1 of the third pipe segment 410c. The transition segment 410d facilitates the placement of the limiting ring 223 onto the third pipe segment 410c.

[0111] Furthermore, the thickness L2 of the pipe wall 410c1 of the third pipe segment 410c is greater than a wall thickness at other positions of the main pipe 410, which enhances a strength of the main pipe at a contact area between the lower rack 220 and the third pipe segment 410c. For instance, when the weight of the portion of the lower rack 220 acts on the third pipe segment 410c, the wall thickness of the third pipe segment 410c ensures the stability of the main pipe.

[0112] As shown in FIGS. 14-23, one embodiment of the present disclosure provides a positioning assembly 800. The positioning assembly 800 comprises at least one inner limiting piece, at least one outer limiting piece, and inclined support pieces. The at least one inner limiting piece is configured to be placed inside a container from an opening of the container and to limit a position of an inner wall of the corresponding container. The at least one outer limiting piece is configured to be placed outside the container to limit a position of an outer wall of the corresponding container. The inclined support pieces are spaced apart from each other. The inclined support pieces are connected to the at least one inner limiting piece. The inclined support pieces are configured to support an edge of the opening of the corresponding container, so that the container is in an inclined state. In the embodiment, the container is exemplified by a bottle body of one of the one or more baby bottles.

[0113] In one optional embodiment, the positioning assembly 800 comprises first positioning assembly 810. The first positioning assembly 810 comprises at least one inner limiting piece 811, at least one outer limiting piece 812, and first inclined support pieces 813. When the at least one inner limiting piece 811 comprises only one inner limiting piece 811, for example, a first inner limiting piece 811, the first inner limiting piece 811 is configured to be placed inside a first container 21a through an opening of the first container 21 to limit an inner wall of the first container 21a. When the at least one outer limiting piece 812 comprises only one outer limiting piece 812, for example, a first outer limiting piece 812, the first outer limiting piece 812 is configured to be disposed outside the first container 21a to limit an outer wall of the first container 21a. The first inclined support pieces 813 are spaced apart from each other and are connected to the first inner limiting piece 811. The first inclined support pieces 813 are configured to support an edge of the opening of the first container 21a, thereby holding the first container 21a in an inclined state.

[0114] For example, the first positioning assembly 810 further comprises a first support base 814 connected to the first inclined support pieces 813. At least two of the first inclined support pieces 813 extend upward from a top surface 814a of the first support base 814. Distances between top surfaces 813a of at least two of the first inclined support pieces 813 and a top surface 814a of the first support base 814 are different, allowing the first container 21a to be placed on the first inclined support pieces 813 in the inclined state. Further, the first outer limiting piece 812 is connected to the first support base 814 and is located on the top surface 814a of the first support base.

[0115] The first positioning assembly 810 further comprises a first reinforcing base 815. The first reinforcing base 815 is connected to at least two of the first inclined support pieces 813. The first reinforcing base 815 is surrounded by and spaced apart from the first support base 814. Both the first reinforcing base 815 and a first limiting body 811a of the first inner limiting piece 811 are arc-shaped structures. An opening direction defined by the first reinforcing base 815 is opposite to an opening direction defined by the first limiting body 811a of the first inner limiting piece 811. Further, parts of the first inclined support pieces 813 extend inward from an inner surface of the first support base 814 to connect with first limiting walls 811b of the first inner limiting piece 811 and two ends of the first reinforcing base 815, so that the first support base 814, the first support pieces 813, the first inner limiting piece 811, and the first reinforcing base 815 are connected together, thereby ensuring a strength of the first positioning assembly 810. Thus, the first positioning assembly provides stable support and positioning for the first container 21a.

[0116] First ends of first limiting walls 811b are connected to the first limiting body 811a, and second ends of the first limiting walls 811b are connected to part or all of the first inclined support pieces 813. Specifically, two first limiting walls 811b are connected to the two ends of the first reinforcing base 815 via two first inclined support pieces 813. The first limiting walls 811b are inclined relative to the top surfaces 813a of the first inclined support pieces 813.

[0117] Furthermore, the first limiting body 811a of the first inner limiting piece 811 is an arc-shaped structure, and the first outer limiting piece 812 is also an arc-shaped structure. The opening direction defined by the first limiting body 811a is opposite to an opening direction defined by the first outer limiting piece 812. That is, the opening direction defined by the first outer limiting piece 812 is the same as the opening direction defined by the first reinforcing base 815.

[0118] There is one first inner limiting piece 811 and one first outer limiting piece 812 in one first positioning assembly 810. A height of one or more of the first inclined support pieces 813 away from the first outer limiting piece 812 is greater than a height of one or more of the first inclined support pieces 813 closer to the first outer limiting piece 812. Thus, it ensures that when the first container 21a is placed on the first inclined support pieces 813, the outer wall of the first container 21a contacts and is positioned by the first outer limiting piece 812. Naturally, it further ensures that the inner wall of the first container 21a contacts and is positioned by the first inner limiting piece 811. For instance, heights of the first inclined support pieces 813 gradually decrease from those away from the first outer limiting piece 812 to those closer to the first outer limiting piece 812.

[0119] In one optional embodiment, the positioning assembly 800 comprises a second positioning assembly 820. The second positioning assembly 820 comprises at least one inner limiting piece 821, at least one outer limiting piece 822, and second inclined support pieces 823. When the at least one inner limiting piece 821 comprises only one inner limiting piece 821, for example, a second inner limiting piece 821, the second inner limiting piece 821 is configured to be placed inside the first container 21a or a second container 21b through the opening thereof to limit the inner wall of the first container 21a or an inner wall of the second container 21b. The at least one outer limiting piece 822 is, for example, two second outer limiting pieces 822. The two second outer limiting pieces 822 are disposed outside the first container 21a or the second container 21b to limit the outer wall of the first container 21a or an outer wall of the second container 21b. The second inclined support pieces 823 are spaced apart from each other and are connected to the second inner limiting piece 821. The second inclined support pieces 823 are configured to support the edge of the opening of the first container 21a or an edge of the opening of the second container 21b, thereby holding the first container 21a or the second container 21b in an inclined state.

[0120] Furthermore, the second positioning assembly 820 further comprises a second support base 824 connected to the second inclined support pieces 823. At least two of the second inclined support pieces 823 extend upward from a top surface 824a of the second support base 824. Distances between the top surfaces 823a of the at least two of the second inclined support pieces 823 and the top surface 824a of the second support base 824 are different, allowing the first container 21a or the second container 21b to be placed on the second inclined support pieces 823 in the inclined state. Moreover, the two second outer limiting pieces 8222 are connected to the second support base 824 and are disposed on the top surface 824a of the second support base 824. Further, the two second outer limiting pieces 822 comprise a primary limiting piece 822a and an auxiliary limiting piece 822b. The primary limiting piece 822a is connected to the second support base 824 and is located on the top surface 824a of the second support base 824. The auxiliary limiting piece 822b is directly mounted on a pipeline 900 of the lower rack 220.

[0121] The second positioning assembly 820 further comprises a second reinforcing base 825. The second reinforcing base 825 is connected to at least two of the second inclined support pieces 823. The second reinforcing base 825 is surrounded by and spaced apart from the second support base 824. Both the second reinforcing base 825 and a second limiting body 821a of the second inner limiting piece 821 are arc-shaped structures. An opening direction defined by the second reinforcing base 825 is opposite to an opening direction defined by the second limiting body 821a of the second inner limiting piece 821. Further, parts of the second inclined support pieces 823 extend inward from an inner surface of the second support base 824 to connect with second limiting walls 821b of the second inner limiting piece 821 and two ends of the second reinforcing base 825. In this way, the second support base 824, the second support pieces 823, the second inner limiting piece 821, and the second reinforcing base 825 are connected together, thereby ensuring a strength of the second positioning assembly 820. Thus, the second positioning assembly 820 provides stable support and positioning for the first container 21a or the second container 21b.

[0122] First ends of the second limiting walls 821b are connected to the second limiting body 821a, and second ends end of the second limiting walls 821b are connected to part or all of the second inclined support pieces 823. Two of the second limiting walls 821b are connected to the two ends of the second reinforcing base 825 via two of the second inclined support pieces 823. The second limiting walls 821b are inclined relative to the top surfaces 823a of the second inclined support pieces 823.

[0123] Furthermore, the two second outer limiting pieces 822, namely the primary limiting piece 822a and the auxiliary limiting piece 822b, are disposed opposite to each other. The second inner limiting piece 821 is disposed between the primary limiting piece 822a and the auxiliary limiting piece 822b. Further, a height of the primary limiting piece 822a is greater than a height of the auxiliary limiting piece 822b.

[0124] Additionally, a height of one or more of the second inclined support pieces 823 away from the primary limiting piece 822a is greater than a height of one or more of the second inclined support pieces 823 closer to the primary limiting piece 822a. Therefore, it ensures that when the first container 21a or the second container 21b is placed on the second inclined support pieces 823, a contact area between the outer wall of the first container 21a or the outer wall of the second container 21b and the primary limiting piece 822a is greater than a contact area between the outer wall of the first container 21a or the outer wall of the second container 21b and the auxiliary limiting piece 822b. For instance, the height of the second inclined support pieces 823 gradually decreases from those farther from the primary limiting piece 822a to those closer to the primary limiting piece 822a. The opening of the second container 21b is larger than the opening of the first container 21a. When the second container 21b is placed on the second positioning assembly 820, the outer wall of the second container 21b is limited by both the primary limiting piece 822a and the auxiliary limiting piece 822b.

[0125] To enhance the stability of the positioning assembly 800, such as the second positioning assembly 820, in supporting and positioning different containers, in one optional embodiment, each of the second inclined support pieces 823 has a step structure 826. Each step structure 826 defines a first step surface 826a and a second step surface 826b having a different height relative to the first step surface 826a. Each first step surface 826a is closer to the second inner limiting piece 821 compared to each second step surface 826b, and a height of each first step surface 826a is lower than the height of the second step surface 826b. Each first step surface 826a is configured to support the first container 21a, while each second step surface 826b is configured to support the second container 21b. It should be noted that each step structure 826 in the embodiment is not limited to having two step surfaces; each step structure 826 may have three or other numbers of step surfaces. It should be noted that in other embodiments of the present disclosure, step structures may be disposed on other structures. For instance, the first positioning assembly 810 further comprises step structures, each of which may be referred to as the step structure 826 and are not described in detail herein.

[0126] In one optional embodiment, as shown in FIGS. 14-23, the positioning assembly 800 comprises a third positioning assembly 830. The third positioning assembly 830 comprises at least one inner limiting piece 831 and third inclined support pieces 833. The at least one inner limiting piece 83 is, for example, a third inner limiting piece 831. The third inner limiting piece 831 is configured to be placed inside a third container 23 through an opening thereof to limit an inner wall of the third container 23. The third inclined support pieces 833 are spaced apart from each other and are connected to the at least one third inner limiting piece 831. The third inclined support pieces 833 are configured to support an edge of the opening of the third container 23, thereby holding the third container 23 in an inclined state. In the embodiment, the third container is a bottle accessory of the one or more baby bottles, such as an air guide tube, which is also referred to as an anti-colic air tube.

[0127] Furthermore, each of the third inclined support pieces 833 comprises a step structure 836. Each step structure 836 defines a first step surface 836a and a second step surface 836b having a different height relative to the first step surface 836a. The first step surface 836a of each step structure 836 is closer to the third inner limiting piece 831 compared to the second step surface 836b of each step structure 836. The first step surface 836a of each step structure 836 is configured to support a first type of the anti-colic air tube, while the second step surface 836b of each step structure 836 is configured to support a second type of the anti-colic air tube. It should be noted that each step structure 836 in the embodiment is not limited to having two step surfaces. Each step structure 836 may have three or other numbers of step surfaces.

[0128] Furthermore, the third positioning assembly 830 further comprises a third support base 834. The third support base 834 is connected to the third inclined support pieces 833. At least two of the third inclined support pieces 833 extend upward from a top surface 834a of the third support base 834. Distances between the top surfaces 833a of the at least two of the third inclined support pieces 833 and the top surface 834a of the support base 834 are different, allowing the third container 23 to be placed on the third inclined support pieces 833 in the inclined state.

[0129] Furthermore, the third positioning assembly 830 further comprises a third reinforcing base 835. The third reinforcing base 835 is connected to at least two of the third inclined support pieces 833. The third reinforcing base 835 is surrounded by and spaced apart from the third support base 834. Therefore, the third inclined support pieces 833, the third inner limiting piece 831, the third support base 834, and the third reinforcing base 835 are connected together, thereby enhancing the stability of the third positioning assembly 830.

[0130] Alternatively, the at least one inner limiting piece 831 comprises two third inner limiting pieces 831: that is, a primary limiting piece 831c and an auxiliary limiting piece 831d. The auxiliary limiting piece 831d is disposed on the top surface of the third reinforcing base 835. Both the third reinforcing base 835 and a third limiting body 831a of the primary limiting piece 831c are arc-shaped structures. An opening direction defined by the third reinforcing base 835 is opposite to an opening direction defined by the third limiting body 831a. The primary limiting piece 831c comprises the third limiting body 831a and third limiting walls 831b. The third limiting body 831a is an arc-shaped structure. First ends of the third limiting walls 831b are connected to the third limiting body 831a, and second ends of the third limiting walls 831b are connected to part or all of the third inclined support pieces 833. The third limiting walls 831b are inclined relative to the top surfaces 833a of the third inclined support pieces 833.

[0131] As shown in FIGS. 14-23, one embodiment of the present disclosure provides the lower rack 220. The lower rack 220 comprises one or more positioning assemblies 800. Each positioning assembly 800 is any one of the positioning assembly described in the above embodiments.

[0132] Furthermore, the lower rack 220 comprises positioning assemblies 800 configured to hold containers, such as bottle bodies and bottle accessories (such as the anti-colic air tubes). The positioning assemblies 800 comprise first positioning assemblies 810, second positioning assemblies 820 and third positioning assemblies 830. Each of the first positioning assembly is configured to hold and position a corresponding first container 21a (i.e., a bottle body with a first-sized opening). Each of the second positioning assemblies 820 is configured to hold and position a corresponding second container 21b (i.e., a bottle with a second-sized opening). Each of the third positioning assemblies 830 is configured to hold and position bottle accessories, such as an anti-colic air tube. Each of the positioning assemblies comprises one or more components, such as an inner limiting structure that extends into a corresponding container through the opening thereof, support structures support an edge of the corresponding container to tilt the corresponding container, and an outer limiting structure positioned on an outer surface of the corresponding container to limit movement. In this way, each container is stably placed on the lower rack 220 and no water accumulation in the opening of each container, thereby facilitating drying of each container.

[0133] In one embodiment, each of the first positioning assemblies 810 is connected to at least one of the second positioning assemblies 820 and at least one of the third positioning assemblies 830. For example, each of the first positioning assemblies 810 is connected to two of the second positioning assemblies 820 and two of the third positioning assemblies 830.

[0134] In one embodiment, at least one of the second positioning assemblies 820 is connected to at least one of the first positioning assemblies 810 and at least one of the third positioning assemblies 830. For example, each of the second positioning assemblies 820 is connected to two of the first positioning assemblies 810 and two of the third positioning assemblies 830.

[0135] In one embodiment, each of the third positioning assemblies 830 is connected to a corresponding one of the first positioning assemblies 810 and / or a corresponding one of the second positioning assemblies 820. For example, each of the third positioning assemblies 830 is connected to the corresponding one of the first positioning assemblies 810 and the corresponding one of the second positioning assemblies 820.

[0136] In one embodiment, the lower rack 220 further comprises a mounting hole 224 defined in a central area of the lower rack. It should be understood that the mounting hole 224 allows the main pipe 410 to pass through. The mounting hole 224 is surrounded by a limiting ring 223. The first positioning assemblies 810 are disposed at corners of the lower rack 220, the second positioning assemblies 820 are disposed around a periphery of the mounting hole 224, and the third positioning assemblies 830 are disposed along edges of the lower rack 220.

[0137] In one embodiment, at least one of the first inclined support pieces 813 is connected to at least one of the second inclined support pieces 823.

[0138] In one embodiment, at least one of the first inclined support pieces 813 is connected to at least one of the one third inclined support pieces 833.

[0139] In one embodiment, at least one of the second inclined support pieces 823 are connected to at least one of the third inclined support pieces 833.

[0140] The lower rack 220 further comprises a pipeline 900 defining the at least one air duct 221. Specifically, the pipeline 900 is fixedly connected to the first support base 814 of each of the first positioning assemblies 810 via corresponding two first connectors 225a. The pipeline 900 is directly fixedly connected to the second support base 824 of each of the second positioning assemblies 820. Alternatively, the pipeline 900 is fixedly connected to the second support base 824 of each of the second positioning assemblies 820 via a corresponding second connector 225b. In some cases, the pipeline 900 is directly and fixedly connected to the second support base 824 via the second connector 225b.

[0141] Exemplarily, the pipeline 900 comprises a first pipeline body 910 and a second pipeline body 920. The first pipeline body 910 and a second pipeline body 920 are respectively located on two sides of the lower rack 220. A shape of the first pipeline body 910 is the same as or different from a shape of the second pipeline body 920. The first pipeline body 910 and the second pipeline body 920 jointly form a peripheral portion 900a disposed along an outer side of the lower rack 220. Namely, the pipeline 900 has the peripheral portion 900a along the lower rack 220. The first support base 814 of each of the first positioning assemblies 810 is fixedly connected to the peripheral portion 900a of the pipeline 900 via the corresponding two first connectors 225a, and the second support base 824 of each of the second positioning assemblies 820 is fixedly connected to the peripheral portion 900a of the pipeline 900 via the corresponding second connector 225b. Additionally, the first pipeline body 910 and the second pipeline body 920 jointly form a central portion 900b located in the central portion of the lower rack 220. Namely, the pipeline 900 has the central portion 900b in the central portion of the lower rack 220. The second support base 824 of each of the second positioning assemblies 820 is directly fixedly connected to the central portion 900b of the pipeline 900.

[0142] In one embodiment, the third support base 834 of each of the third positioning assemblies 830 is directly fixedly connected to the peripheral portion 900a of the pipeline 900.

[0143] In one embodiment, each first support base 814 and each first reinforcing base 815 are connected to one or more of air-guiding connecting pipes 930. For example, the one or more air-guiding connecting pipes 930 are attached to a bottom surface of each first support base 814 and a bottom surface of each first reinforcing base 815. In another example, the one or more air-guiding connecting pipes 930 are attached to the bottom and side surfaces of each first support base 814 and the bottom and side surfaces of each first reinforcing base 815. When the first container 21a is placed on one of the first positioning assemblies 810, the edge of the first container 21a may or may not place on the one or more air-guiding connecting pipes 930. The one or more air-guiding connecting pipes 930 are communicated with the pipeline 900 of the lower rack 220 and each air-guiding connecting pipe comprises an air outlet 901. When the first container 21a is placed on the one of first positioning assemblies 810, a corresponding air outlet 901 faces the opening of the first container 21a. Thus, when air flows through the pipeline 900, the air is directed into the interior of the first container 21a via the corresponding air outlet 901.

[0144] In one embodiment, the pipeline 900 is also provided with other air outlets 901, which are located at positions of the second positioning assemblies 820 and the third positioning assemblies 830. When the first container 21a or the second container 21b is placed on one of the second positioning assemblies 820, one of the other air outlets 901 faces the openings of the first container 21a or the opening of the second container 21b. When the third container 23, such as the anti-colic air tube, is placed on one of the third positioning assemblies 830, a corresponding air outlet 901 faces the opening of the third container 23.

[0145] In one embodiment, as shown in FIG. 16, there are two air ducts 221 and two inlets 222. Each inlet 222 of the lower rack 220 comprises a first inlet 222a, a second inlet 222b, and a third inlet 222c. The first inlet 222a thereof is configured to connect with the central portion 900b of the pipeline 900, the second inlet 222b thereof is configured to connect with the peripheral portion 900a of the pipeline 900, and the third inlet 222c thereof is configured to connect with the air-guiding connecting pipes 930 of the pipeline 900.

[0146] In one embodiment, as shown in FIG. 16, the lower rack 220 further comprises air guide plates 226. Each of the air guide plates 226 has an air guide channel 226a. When the lower rack 220 is mounted inside the inner container 110, each air guide channel 226a is configured to communicate with a corresponding predetermined position of the inner container 110. Specifically, the air guide plates 226 are inclined. A blocking plate is mounted below each of the air guide plates 226. Each blocking plate is configured to block air from blowing downward below the lower rack 220.

[0147] Furthermore, as shown in FIG. 15, the pipeline 900 comprises holes 902, the holes 902 are on one side opposite to the surface of the lower rack 220 configured to place the one or more containers. When a liquid enters the pipeline 900, the holes 902 allow the liquid inside the pipeline 900 to drain to the outside.

[0148] It is understandable that the container washing machine 10 comprises the positioning assemblies 800 and the lower rack 220 of the embodiments shown in FIGS. 14-23.

[0149] As shown in FIGS. 24-32, the container washing machine 10a comprises an inner container 1100, a drain component 3000, and a breather 2000. The container washing machine 10a further comprises other components such as an upper rack, a lower rack, an upper rotating spray arm, and a lower rotating spray arm, which may be referenced from the embodiments described above and are not repeatedly described above. The container washing machine 10a defines a height direction F1, which is understood as a vertical direction when a bottom portion of the container washing machine 10a is placed on a flat surface.

[0150] The inner container 1100 comprises a washing chamber 1104, a circulating water inlet hole 1101, and a drain hole 1102. The washing chamber 1104 is communicated with the circulating water inlet hole 1101 and the drain hole 1102. The inner container 1100 comprises side walls 1110 and a bottom wall 1120. The side walls 1110 are connected to a periphery of the bottom wall 1120 to define the washing chamber 1104. Furthermore, the side walls 1110 and the bottom wall 1120 together define an opening 1105 at a top portion of the inner container 1100 along the height direction F1. In other words, the opening 1105 is defined on ends of the side walls 1110 away from the bottom wall 1120. The circulating water inlet hole 1101 is defined on one of the side walls 1110; and the drain hole 1102 is defined on the bottom wall 1120.

[0151] The drain component 3000 is connected to the inner container 1100, and a water inlet 3001 of the drain component 3000 is communicated with the drain hole 1103. The inner container 1100 further comprises a mounting shell 1130 disposed below the bottom wall 1120. A power pump is mounted within the mounting shell 1130. The mounting shell 1130 is communicated with the drain hole 1102 of the inner container 1100. The drain component 3000 is connected to the mounting shell 1130, and the water inlet 3001 is communicated with the drain hole 1103 of the mounting shell 1130. The drain component 3000 and the mounting shell 1130 are connected via a first pipe body 3100, and the water inlet 3001 of the drain component 3000 and the drain hole 1103 of the mounting shell 1130 are communicated through a channel of the first pipe body 3100.

[0152] Optionally, the drain component 3000 may comprise a water pump.

[0153] The breather 2000 is connected to the drain component 3000, and a water inlet 2001 of the breather 2000 is communicated with the water outlet 3002 of the drain component 3000. Specifically, the breather 2000 and the drain component 3000 are connected via a second pipe body 3200, and the water inlet 2001 of the breather 2000 is communicated with the water outlet 3002 of the drain component 3000 through a channel of the second pipe body 3200. Further, the breather 2000 comprises a first sleeving portion 2011 defining the water inlet 2001. The second pipe body 3200 is sleeved with the first sleeving portion 201. For instance, the second pipe body 3200 is sleeved on the first sleeving portion 2011.

[0154] The breather 2000 is further connected to the inner container 1100, and a circulating water outlet 2002 of the breather 2000 is communicated with the circulating water inlet hole 1101 of the inner container 1100. For example, the breather 2000 is mounted to an outer surface of one of the side walls 1110 of the inner container 1100 via a fixing structure. The fixing structure of the breather 2000 comprises fixing plates 2600. The fixing plates 2000 comprise fixing holes 2601. Correspondingly, fixing structures 1115 are disposed on the outer surface of the one of the side walls 1110 of the inner container 1100. Fixing components, such as screws, respectively pass through the fixing holes 2601 to secure the breather to the fixing structures 1115.

[0155] For example, the breather 2000 comprises side walls 2100 and a top cover 2200. The top cover 2200 is mounted at top ends of the side walls 2100. In one optional embodiment, a connection between the top cover 2200 and the side walls 2100 satisfies that the top cover 2200 is fixedly and non-detachably attached to the top ends of the side walls 2100, which ensures that the top cover 2200 completely seals the top ends of the side walls 2100, thereby forming a sealed structure at the top ends of the side walls 2100 and preventing the washing liquid from splashing out from a connection junction between the side walls 2100 and the top cover 2200 during flow of the washing liquid inside the breather 2000. A non-detachable connection between the top cover 2200 and the side walls 2100 is achieved through a method such as integrated injection molding or welding. In another optional embodiment, the top cover 2200 is detachably connected to the side walls 2100. Namely, the top cover 2200 is allowed to be attached to the top ends of the side walls 2100 and is also allowed to be removed from the side walls 2100, which facilitates maintenance of the breather 2000 and cleaning of an interior of the breather. In the embodiment, the top cover 2200 and the top ends of the side walls 2100 are tightly connected, preventing the washing liquid inside the breather 2000 from splashing out from the connection junction thereof. A detachable connection between the top cover 2200 and the side walls 2100 is achieved through snap-fit connections or screw fastening.

[0156] Optionally, at least two of the fixing plates 2600 are disposed on the outer surfaces of the side walls 2100. For instance, two fixing plates 2600 are mounted on the one of the side walls 2100 and positioned opposite to each other. At least one of the fixing plates 2600 is disposed on the top cover 2200.

[0157] The drain component 3000 is configured to drive the washing liquid from the drain hole 1102 of the inner container 1100 to the water inlet 2001 of the breather 2000. The washing liquid inside the breather 2000 is discharged from a drain port 2003 under gravity, and the washing liquid further flows from the circulating water outlet 2002 of the breather 2000 into the circulating water inlet hole 1101 of the inner container 1100, thereby entering the washing chamber 1104 of the inner container 1100. Compared to the prior art where a drain hose is applied for discharge, when the drain hose malfunctions due to improper placement or blockage, preventing normal discharge of the washing liquid from the container washing machine, excessive pressure in the drain hose may cause explosion or leakage problems. Therefore, in the embodiment, the washing liquid inside the breather 2000 is further allowed to enter the circulating water inlet hole 1101 via the circulating water outlet 2002 and flow into the washing chamber 1104, thereby forming a circulatory flow of the washing liquid. Therefore, it prevents pressure buildup in the entire system of the container washing machine 10a that could cause rupture or leakage at pipe connection points, effectively solving the problem in the prior art. Furthermore, the container washing machine 10a in the embodiment does not siphon during a washing process, preventing all the washing liquid from overflowing from the drain port 2003 of the breather 2000. Furthermore, when a water inlet control of the container washing machine 10a is abnormal, excess water is discharged without affecting a normal operation of the entire system of the container washing machine 10a.

[0158] Furthermore, the top cover 2200 and the side walls 2100 of the breather 2000 define an accommodating chamber 2004. The accommodating chamber 2004 is configured to store the washing liquid. In other optional embodiments, the breather 2000 further comprises a bottom wall 2300 connected to bottom ends of the side walls 2100. The top cover 2200, the side walls 2100, and the bottom wall 2300 jointly define the accommodating chamber 2004. The water inlet 2001 is disposed on one of the side walls 2100; the circulating water outlet 2002 is disposed on another one of the side walls 2100. Specifically, the water inlet 2001 and the circulating water outlet 2002 are disposed on different side walls 2100. The drain port 2003 of the breather 2000 is disposed on the bottom wall 2300.

[0159] In one embodiment, the container washing machine 10a further comprises a third pipe body 3300. The third pipe body 3300 is connected to the bottom wall 2300 of the breather 2000, and the third pipe body 3300 is communicated with the drain port 2003 of the breather 2000. Further, the breather 2000 further comprises a second sleeving portion 2033 disposed around the drain port 2003. The second sleeving portion 2033 is sleeved with the third pipe body 3300. For example, the third pipe body 3300 is sleeved on the second sleeving portion 2033. One end of the third pipe body 3300 away from the breather 2000 has a drainage outlet 3301. The drainage outlet is configured to discharge the washing liquid from inside the breather 2000 to the outside of the container washing machine 10a. Compared to the prior art, even if the third pipe body 3300 is blocked or improperly placed and unable to discharge the washing liquid, the washing liquid inside the breather 2000 is allowed to enter the circulating water inlet hole 1101 via the circulating water outlet 2002 and flow into the washing chamber 1104, thereby forming the circulatory flow of washing liquid. In this way, it prevents excessive pressure buildup inside the third pipe body 3300 that could lead to explosion or leakage.

[0160] To illustrate, as shown by a dashed arrow in FIG. 28, a flow direction demonstrates how the breather 2000 and the inner container 1100 achieve internal circulation of washing liquid. The washing liquid in the inner container 1100 is driven by the drain component 3000 from the drain hole 1102 along a first flow direction a to the water inlet 2001 of the breather 2000. When the third pipe body 3300 is functioning normally for drainage, the washing liquid entering the breather 2000 along the first flow direction a flows under gravity along a third flow direction c to the drainage outlet 3301 and is discharged to the outside of the container washing machine 10a. In cases where the third pipe body 3300 functions abnormally, the washing liquid entering the breather 2000 along the first flow direction a gradually accumulates until the washing liquid reaches a level of the circulating water outlet 2002. At this point, the washing liquid inside the breather 2000 flows along a second flow direction b to the circulating water outlet 2002 and the circulating water inlet hole 1101, and re-enters the inner container 1100, thereby achieving circulation.

[0161] For instance, as shown in FIGS. 29 and 30, and in conjunction with other drawings, the water inlet 2001 of the breather 2000 is below the circulating water inlet hole 1101 in the height direction F1. For example, a position of the water inlet 2001 in the height direction F1 is defined as h1. h1 is below both the circulating water inlet hole 1101 and the circulating water outlet 2002. Therefore, when the third pipe body 3300 functions normally, the washing liquid entering the breather 2000 from the water inlet 2001 is discharged via the third pipe body 3300 to the outside of the container washing machine 10a. Similarly, the water inlet 2001 of the breather 2000 is above a maximum fill level for washing liquid in the washing chamber 1104 in the height direction F1. For instance, the maximum fill level for washing liquid in the washing chamber 1104 is defined as h4. h4 is below h1. In this way, it ensures that the washing liquid inside the breather 2000 does not accidentally flow out of the container washing machine 10a, thereby maintaining an adequate amount of washing liquid in the washing chamber 1104.

[0162] In one embodiment, the container washing machine 10a further comprises an upper cover 130. The upper cover 130 covers or exposes the opening 1105 of the inner container 1100. The washing chamber 1104 of the container washing machine 10a is communicated with external air via the opening 1105 and exhaust holes 1301, ensuring that an air pressure inside the washing chamber 1104 matches an external atmospheric pressure. Moreover, when the circulating water outlet 2002 of the breather 2000 is communicated with the circulating water inlet hole 1101, the air pressure inside the accommodating chamber 2004 of the breather 2000 remains consistent with the air pressure in the washing chamber 1104. Thus, the air pressure of the breather 2000 and the air pressure of the inner container 1100 are balanced, ensuring that a pressure generated by the drain component 3000 when driving the washing liquid into the breather 2000 is rapidly relieved, which prevents damage or performance degradation of components in the container washing machine 10a due to pressure accumulation.

[0163] In one embodiment, the container washing machine 10a further comprises at least one blocking structure. The at least one blocking structure is disposed on the breather 2000 and / or the inner container 1100, and is configured to prevent the washing liquid from the inner container 1100 from entering the breather 2000 through the circulating water inlet hole 1101 of the inner container 1100 and the circulating water outlet 2002. In one optional embodiment, the at least one blocking structure comprises a first blocking structure 2400 and a second blocking structure 1114. The first blocking structure 240 is disposed on the breather 2000. The first blocking structure 2400 extends upward in the height direction F1 from below the circulating water outlet 2002 of the breather 2000 to partially cover the circulating water outlet 2002. The second blocking structure 1114 is disposed on the inner container 1100. The second blocking structure 1114 extends downward in the height direction F1 from above the circulating water inlet hole 1101 of the inner container 1100 to partially cover the circulating water inlet hole 1101. A free end of the first blocking structure 2400 is above a free end of the second blocking structure 1114 in the height direction F1, which allows the first blocking structure 2400 and the second blocking structure 1114 to jointly prevent the washing liquid in the inner container 1100 from entering the breather 2000 through the circulating water inlet hole 1101 of the inner container 1100 and the circulating water outlet 2002. Specifically, the position of the free end of the first blocking structure 2400 in the height direction F1 is defined as h3, and the position of the free end of the second blocking structure 1114 in the height direction F1 is defined as h2. h3 is located above h2. Namely, a projection of the first blocking structure 2400 on the second blocking structure 1114 partially overlaps second blocking structure 1114, or a projection of the second blocking structure 1114 on the first blocking structure 2400 partially overlaps the first blocking structure 2400. Therefore, the washing liquid is prevented from splashing from the inner container 1100 into the breather 2000. In other optional embodiments, the free end of the first blocking structure 2400 and the free end of the second blocking structure 1114 are flush.

[0164] In another optional embodiment, the at least one blocking structure comprises only the first blocking structure 2400, and no second blocking structure 1114 is provided. In yet another optional embodiment, the at least one blocking structure comprises only the second blocking structure 1114, and no first blocking structure 2400 is provided. These configurations may, to a certain extent, prevent the washing liquid from splashing from the inner container 1100 into the breather 2000.

[0165] In one embodiment, the first blocking structure 2400 is partially disposed in the circulating water outlet 2002. Similarly, the second blocking structure 1114 is at least partially disposed in the circulating water inlet hole 1101. For instance, the second blocking structure 1114 is completely disposed within the circulating water inlet hole 1101.

[0166] In one embodiment, at least a portion of the first blocking structure 2400 is a semi-circular structure. The second blocking structure 1114 is a semi-circular structure.

[0167] In one embodiment, the first blocking structure 2400 comprises a blocking body 2410 disposed inside the circulating water outlet 2002 and a return plate 2420. The return plate 2420 is connected to the blocking body 2410 and is inclined. A first end of the return plate 2420 closer to the inner container 1100 is located below a second end away from the inner container 1100 in the height direction F1, which ensures that the washing liquid from the inner container 1100 that enters the circulating water outlet 2002 is blocked by the first blocking structure 2400 and flows back through the return plate 2420 into the circulating water inlet hole 1101 of the inner container 1100.

[0168] In one embodiment, the breather 2000 comprises a first connecting structure 2500 disposed around a circumference of the circulating water outlet 2002. The inner container 1100 comprises a second connecting structure disposed around a circumference of the circulating water inlet hole 1101. The first connecting structure 2500 is connected to the second connecting structure.

[0169] In one optional embodiment, a connection method between the first connecting structure 2500 and the second connecting structure is as follows. The second connecting structure comprises a first connecting raised ring 1111 and a second connecting raised ring 1112. The second connecting raised ring 1112 surrounds the first connecting raised ring 1111 to form an annular groove 1113. The first connecting structure 2500 is disposed in the annular groove 1113 so that inner and outer sides of the first connecting structure 2500 are limited by the first connecting raised ring 1111 and the second connecting raised ring 1112. In another optional embodiment, the first connecting structure 2500 is sleeved with the second connecting structure. For instance, the second connecting structure may only comprise the first connecting raised ring 1111 and not comprise the second connecting raised ring 1112. In yet another optional embodiment, one of the first connecting structure 2500 and the second connecting structure is a connecting groove, and the other is a connecting raised ring. The connecting raised ring is disposed in the connecting groove.

[0170] As shown in FIG. 33, the container washing machine 10a further comprises an electrical control device 4000. The electrical control device 4000 is electrically connected to the drain component 3000. When powered on, the electrical control device 4000 is configured to control the drain component 3000. For example, under the control of the electrical control device 4000, the drain component 3000 drives the washing liquid from the drain hole 1102 of the inner container 1100 to the water inlet 2001 of the breather 2000, and subsequently into the breather 2000. The electrical control device 4000 may be referred to as the electrical control device 710.

[0171] The lower rotating spray arm 320 is not limited to the structure shown in FIG. 8. As shown in FIGS. 24-42, a lower rotating spray arm 320b is applied to a container washing machine 10b. It is understood that the container washing machine 10b comprises the lower rotating spray arm 320b. The container washing machine 10b comprises a main pipe 410b and a lower rack 220b. The lower rotating spray arm 320b is connected to and communicated with the main pipe 410b. The lower rotating spray arm 320b is capable of rotating around the main pipe 410b. The lower rack 220b is configured to hold the one or more containers, such as the one or more baby bottles. Along a length direction of the main pipe 410b, the lower rotating spray arm 320b is disposed below the lower rack 220b. The lower rotating spray arm 320b is configured to spray the washing liquid to wash the one or more containers (e.g., the one or more bottles placed on the lower rack 220b). Other components of the container washing machine 10b, such as the upper rack and upper rotating spray arm, may be referenced from the above embodiments and are repeatedly described herein.

[0172] The lower rotating spray arm 320b comprises a rotating portion 3210 and at least three spray arm bodies 3220. The rotating portion 3210 is fixedly connected to the at least three spray arm bodies 3220. For example, the rotating portion 3210 and the at least three spray arm bodies 3220 are integrally formed. The at least three spray arm bodies 3220 are spaced apart around a periphery of the rotating portion 3210 and are communicated with the rotating portion 3210. In other words, the at least three spray arm bodies 3220 are connected to the outer peripheral side of the rotating portion 3210. In one optional embodiment, the at least three spray arm bodies 3220 are equally spaced around the periphery of the rotating portion 3210. When the lower rotating spray arm 320b comprises three spray arm bodies 3220, an angle formed between each two adjacent spray arm bodies is 120 degrees. The present disclosure takes an example that the at least three spray arm bodies 3220 comprise three spray arm bodies 3220 for further illustration. It is understood that the number of the at least three spray arm bodies 3220 may be four, five, or another number in other embodiments, which is not limited thereto.

[0173] The rotating portion 3210 is capable of rotating around the main pipe 410b of the container washing machine 10b. Specifically, the lower rotating spray arm 320b comprises a through hole 3230. The through hole 3230 allows the main pipe 410b to pass through, enabling the rotating portion 3210 to be sleeved on an outer side of the main pipe 410b. The lower rotating spray arm 320b further comprises connecting structures 3250. The connecting structures 3250 are connected to the rotating portion 3210 and are integrally formed with the rotating portion 3210. After the rotating portion 3210 is sleeved on the main pipe 410b, the connecting structures 3250 are connected to a corresponding structure on the main pipe 410b, such as a protruding ring. The lower rotating spray arm 320b is rotatable around the main pipe 410b. An interior of the rotating portion 3210 is hollow, allowing the through hole 3230 to communicate with channels 3240 of the three spray arm bodies 3220 via the rotating portion 3210. The through hole 3230 is further communicated with an internal channel of the main pipe 410b. The main pipe 410b is configured to convey the washing liquid into the lower rotating spray arm 320b.

[0174] In one embodiment, each of the spray arm bodies 3220 comprises at least two spray hole groups (A11 and B11; or A12 and B12; or A13 and B13). Each of the spray hole groups (A11, B11, A12, B12, A13, B13) comprises spray holes 3201. In at least one of the spray hole groups, spraying directions of at least two of the spray holes 3201 are different., which ensures that during the spraying of the washing liquid by the at least two of the spray holes 3201 in the at least one of the spray hole groups, the washing liquid is sprayed in different directions, achieving multi-directional water jets and enhancing a cleaning effect. An innermost spray hole 3201 (closest to the rotating portion 3210) in each of the spray hole groups (A11, B11, A12, B12, A13, B13) has an outward-tilted angle. In one optional embodiment, for any one of the at least three spray arm bodies, the at least two spray hole groups are at different distances from the rotating portion 3210,. The spray holes 3201 of any one of the at least two spray hole groups are at different distances from the rotating portion 3210.

[0175] In any one of the spray hole groups, a spraying direction of a spray hole 3201 thereof closest to the rotating portion 3210 is tilted toward a direction away from the rotating portion 3210, which enhances the cleaning effect of an interior of the one or more containers that are in the inclined state.

[0176] In any one of the spray hole groups, the spraying directions of all spray holes 3201 are different from each other, which ensures that the directions of the water jets produced by all spray holes 3201 in any one of the spray hole groups during the spraying of washing liquid are all different. For instance, spraying directions of all spray holes are different from each other, meaning that all spray holes 3201 on the lower rotating spray arm 320b produce water jets in different directions during the spraying of washing liquid. For instance, the spray holes are able to produce 9 or 18 water jets in 9 or 18 directions to provide a sufficient cleaning range for the one or more containers during the rotation of the lower rotating spray arm 320b.

[0177] In one embodiment, the at least two spray hole groups on each of the spray arm bodies 3220 are disposed along a length direction F4. In any one of the spray hole groups, the spray holes 3201 thereof are also disposed along the length direction F4 of their respective spray arm body 3220. In one arrangement, the spray holes 3201 in any one of the spray hole groups are staggered along the length direction F4 of their respective spray arm body 3220. Staggered arrangement is understood as distances between the spray holes 3201 in any one of the spray hole groups and am side edge of their respective spray arm body 3220 are different.

[0178] In one embodiment, the three spray arm bodies 3220 comprise a first spray arm body 3221, a second spray arm body 3222, and a third spray arm body 3223. The first spray arm body 3221 comprises a first spray hole group A11 close to the rotating portion 3210 and a second spray hole group B11 away from the rotating portion 3210. The second spray arm body 3222 comprises a third spray hole group A12, close to the rotating portion 3210 and a fourth spray hole group B12 away from the rotating portion 3210. The third spray arm body 3223 comprises a fifth spray hole group A13, close to the rotating portion 3210 and a sixth spray hole group B13 away from the rotating portion 3210.

[0179] Specifically, the first spray hole group A11 is disposed on a first position P1 of the first spray arm body 3221; the third spray hole group A12 is disposed on a third position P3 of the second spray arm body 3222; and the fifth spray hole group A13 is disposed on a fifth position P5 of the third spray arm body 3223. The first position P1, the third position P3, and the fifth position P5 are disposed around the rotating portion 3210. The first position P1, the third position P3, and the fifth position P5 are at the same distance from the rotating portion 3210. In other words, it is understood that the first position P1, the third position P3, and the fifth position P5 jointly define a first circle R1 around the rotating portion 3210. The second spray hole group B11 is disposed on a second position P2 of the first spray arm body 3221; the fourth spray hole group B12 is disposed on a fourth position P4 of the second spray arm body 3222; and the sixth spray hole group B13 is disposed on a sixth position P6 of the third spray arm body 3223. The second position P2, the fourth position P4, and the sixth position P6 are disposed around the rotating portion 3210. The second position P2, the fourth position P4, and the sixth position P6 are at the same distance from the rotating portion 3210. In other words, it is understood that the second position P2, the fourth position P4, and the sixth position P6 together define a second circle R2 around the rotating portion 3210. The second circle R2 is spaced apart from and surrounds the first circle R1.

[0180] All spray holes 3201 of the lower rotating spray arm 320b are disposed toward the lower rack 220b. When spraying the washing liquid, all spray holes 3201 of the lower rotating spray arm 320b act on all of the one or more containers placed on the lower rack 220b, such as the first bottle 21A and the second bottle 21B, to clean them. In one optional embodiment, coverage areas of the spray holes 3201 align with openings of the containers, such as the first bottle and the second bottle, ensuring that the water jets (cleaning columns) produced by the spray holes 3201 enter the first bottle and the second bottle.

[0181] The spray holes 3201 in the first spray hole group A11, the spray holes 3201 in the third spray hole group A12, and the spray holes 3201 in the fifth spray hole group A13 are all oriented toward seventh positions P7 on the lower rack 220b. The spray holes 3201 in the second spray hole group B11, the spray holes 3201 in the fourth spray hole group B12, and the spray holes 3201 in the sixth spray hole group B13 are all oriented towards eighth positions P8 on the lower rack 220b. The seventh positions P7 and the eighth positions P8 are different.

[0182] When all spray holes of the lower rotating spray arm 320b spray the washing liquid, the water jets ejected from the spray holes 3201 in the first spray hole group A11, the spray holes 3201 in the third spray hole group A12, and the spray holes 3201 in the fifth spray hole group A13 act on the seventh positions P7 on the lower rack 220b. The water jets ejected from the spray holes 3201 in the second spray hole group B11, the spray holes 3201 in the fourth spray hole group B12, and the spray holes 3201 in the sixth spray hole group B13 act on the eighth positions P8 on the lower rack 220b.

[0183] In one scenario, the eighth positions P8 are located at corners of the lower rack 220b. For example, when the lower rack 220b comprises four corners, there are four eighth positions P8. Each of the eighth positions P8 is able to support and position one container, such as one second bottle 21B. Each of the seventh positions P7 is located between corresponding two adjacent eighth positions P8. For example, the lower rack 220b comprises four seventh positions P7. Each of the seventh positions P7 is able to support and position one container, such as one first bottle 21A. Thus, during the rotation of the lower rotating spray arm 320b, when all spray holes spray the washing liquid, the washing liquid from the spray holes in the first spray hole group A11, the spray holes in the third spray hole group A12, and the spray holes in the fifth spray hole group A13 acts on multiple (e.g., four) first bottles 21A to clean the first bottles. The washing liquid from the spray holes in the second spray hole group B11, the spray holes in the fourth spray hole group B12, and the spray holes in the sixth spray hole group B13 acts on multiple (e.g., four) second bottles 21B to clean the second bottles.

[0184] As shown in FIG. 41, the washing liquid sprayed from the spray holes 3201 in the first spray hole group A11, or the washing liquid sprayed from the spray holes 3201 in the third spray hole group A12, or the washing liquid sprayed from the spray holes 3201 in the fifth spray hole group A13 produces first water columns A01. The first water columns A01 thereof are capable of entering a corresponding first bottle 21A from its opening. As shown in FIG. 42, the washing liquid sprayed from the spray holes 3201 in the second spray hole group B11, or the washing liquid sprayed from the spray holes 3201 in the fourth spray hole group B12, or the washing liquid sprayed from the spray holes 3201 in the sixth spray hole group B13 is able to produce second water columns B01. The second columns B01 are capable of entering a corresponding second bottle 21B through its opening.

[0185] It is understandable that during the rotation of the lower rotating spray arm 320b, when all the spray holes spray the washing liquid, the washing liquid sprayed from the spray holes 3201 in the first spray hole group A11, the washing liquid sprayed from the spray holes 3201 in the third spray hole group A12, and the washing liquid sprayed from the spray holes 3201 in the fifth spray hole group A13 are confined within the first circle R1. The washing liquid sprayed from the spray holes 3201 in the second spray hole group B11, the washing liquid sprayed from the spray holes 3201 in the fourth spray hole group B12, and the washing liquid sprayed from the spray holes 3201 in the sixth spray hole group B13 is confined within the second circle R2.

[0186] In one embodiment, an arrangement of the spray holes 3201 in the first spray hole group A11, an arrangement of the spray holes 3201 in the third spray hole group A12, and an arrangement of the spray holes 3201 in the fifth spray hole group A13 are the same. For example, a positional arrangement of the spray holes 3201 in the first spray hole A11, a positional arrangement of the spray holes 3201 in the third spray hole group A12, and a positional arrangement of the spray holes 3201 in the fifth spray hole group A13 are the same. In other optional embodiments, the arrangement of the spray holes 3201 in the first spray hole group A11, the arrangement of the spray holes 3201 in the third spray hole group A12, and the arrangement of the spray holes 3201 in the fifth spray hole group A13 may also be different.

[0187] In one embodiment, an arrangement of the spray holes 3201 in the second spray hole group B11, an arrangement of the spray holes 3201 in the fourth spray hole group B12, and an arrangement of the spray holes 3201 in the sixth spray hole group B13 are the same. For instance, a positional arrangement of the spray holes 3201 in the second spray hole group B11, a positional arrangement of the spray holes 3201 in the fourth spray hole group B12, and a positional arrangement of the spray holes 3201 in the sixth spray hole group B13 are the same. In other optional embodiments, the arrangement of the spray holes 3201 in the second spray hole group B11, the arrangement of the spray holes 3201 in the fourth spray hole group B12, and the arrangement of the spray holes 3201 in the sixth spray hole group B13 may also be different.

[0188] In one embodiment, at least one power hole 3202 is disposed on a lower side of each of the spray arm bodies 3220 to generate rotational torque. Each power hole 3202 is disposed at an angle relative to a central axis L11 of the lower rotating spray arm 320b. During the spraying of the washing liquid from each power hole 3202, a reactive force drives a corresponding one of the spray arm bodies 3220 to rotate. A spraying direction of the washing liquid from each power hole 3202 is opposite to a rotation direction of the corresponding one of the spray arm bodies 3220.

[0189] As shown in FIGS. 43-56, the upper rack 210c is configured to hold one or more containers, such as one or more containers 20c shown in FIG. 56. Each container 20 is a part of a baby bottle, such as a nipple. The upper rack 210c is applied in a container washing machine 10c. The container washing machine 10c further comprises an upper cover 130c. The upper cover 130c is detachably connected to the upper rack 210c, so that the upper cover is allowed to cover the upper rack 210c and is allowed to be removed from the upper rack. The upper cover 130c is able to cover both the upper rack 210c and the one or more containers 20c placed on the upper rack. Other components of the container washing machine 10c may be referenced from the above embodiments and are not repeatedly described herein.

[0190] The upper rack 210c comprises a rack body 211c and a support component 212c. The support component 212c is detachably connected to the rack body 211c. That is, the support component 212c is capable of being mounted on the rack body 211c and being detached from the rack body 211c. When the support component 212c is mounted on the rack body 211c, both the support component 212c and the rack body 211c are able to hold the containers 20c. When the support component 212c and the rack body 211c are separated, the rack body 211c is allowed to be used independently to hold the containers. In practical applications, the user may choose to use the rack body 211c separately or with the support component 212c based on their needs. Therefore, the upper rack 210c in the embodiment achieves different configurations, fulfilling a purpose of multi-form design and meeting the user's diverse application requirements.

[0191] The rack body 211c comprises a receiving portion 2110 configured to hold the containers 20c and a mounting portion 2120. The mounting portion 2120 is surrounded by the receiving portion 2110. That is, the receiving portion 2110 is disposed around the mounting portion 2120. The mounting portion 2120 is configured to install the support component 212c. The support component 212 is detachably mounted on the mounting portion 2120. That is, the support component 212c is allowed to be mounted on and removed from the mounting portion. Specifically, the mounting portion 2120 comprises a mounting plate 2121 and a mounting ring 2126. The mounting ring 2126 is annular and is connected to the edge of the mounting plate 2121, so as to define a mounting groove 2123. An opening of the mounting groove 2123 faces a placement surface of the rack body 211c. The mounting groove 2123 is configured to accommodate a part of the support component 212c. Both an upper surface and a lower surface of the mounting plate 2121 are parallel to a X-Y plane. The upper surface of the mounting plate 2121 and the placement surface of the receiving portion 2110 are on the same side of the rack body 211c.

[0192] The rack body 211c comprises first mounting structures 2122 disposed on the mounting portion 2120. In a first case, the first mounting structures 2122 are disposed on the upper surface of the mounting plate 2121. In a second case, the first mounting structures 2122 are disposed on the lower surface of the mounting plate 2121. In a third case, the first mounting structures 2122 are disposed on an inner surface of the mounting ring 2126. The inner surface of the mounting ring 2126 is one side where the mounting ring 2126 is connected to the mounting plate 2121, and an outer surface of the mounting ring 2126 is connected to the receiving portion 2110. The present disclosure takes an example that the first mounting structures 2122 are disposed on the lower surface of the mounting plate 2121 for further illustration. The mounting portion 2120 further comprises connecting holes 2124 penetrating the mounting plate 2121. The connecting holes 2124 are formed on the connection plate 2121 or at a junction between the mounting plate 2121 and the mounting ring 2126. Each of the first mounting structures 2122 is close to a corresponding one of the connecting holes 2124. The mounting portion 2120 further comprises recesses 2125 formed on the mounting plate 2121. The recesses 2125 are one-to-one connected to the connecting holes 2124, and each of the recesses 2125 is adjacent to a corresponding one of the first mounting structures 2122.

[0193] In one embodiment, the first mounting structures 2122 are evenly spaced on the mounting plate 2121, the connecting holes 2124 are evenly spaced, and the recesses 2125 are evenly spaced on the mounting plate 2121.

[0194] Exemplarily, the support component 212c comprises a loading structure 2160, second mounting structures 2170, and support structures 2150. The second mounting structures 2170 are disposed on a lower surface 2162 of the loading structure 2160. The second mounting structures 2170 are detachably connected to the first mounting structures 2122. The support structures 2150 are spaced apart on an upper surface 2161 of the loading structure 2160, and each of the support structures 2150 is inclined relative to the loading structure 2160.

[0195] A connection method between the first mounting structures 2122 and the second mounting structures 2170 comprises one of a snap-fit connection, a threaded connection, and a magnetic connection. Specifically, the first mounting structures 2122 are one-to-one detachably connected to the second mounting structures 2170. The present disclosure takes an example that the first mounting structures are snapped with the second mounting structures for further illustration.

[0196] A connecting process of the first mounting structures 2122 and the second mounting structures 2170 is as follows.

[0197] First, the loading structure 2160 is aligned with the mounting groove 2123, and the second mounting structure 2170 is aligned with the connecting holes 2124 and the recesses 2125.

[0198] Then, the second mounting structures 2170 are one-to-one inserted into the connecting holes 2124 and the recesses 2125. A force is applied to drive a part of each of the second mounting structures 2170 from the upper surface of the mounting plate 2121 to an outer side of the lower surface of the mounting plate, so that the second mounting structures 2170 are connected with the first mounting structures 2122.

[0199] The loading structure 2160 is placed in the mounting groove 2123. The lower surface 2162 of the loading structure 2160 is fully attached to the upper surface of the mounting plate 2121 and is completely surrounded by the mounting ring 2126.

[0200] In one embodiment, the number of the first mounting structures 2122 and the number of the second mounting structures 2170 may be the same or different. For instance, there are four first mounting structures 2122 and two second mounting structures 2170. The two second mounting structures 2170 are positioned opposite to each other and are detachably connected to corresponding two of the four first mounting structures 2122.

[0201] In one embodiment, the support component 212c further comprises at least one limiting structure 2180. Taking two limiting structures 2180 as an example, the two limiting structures 2180 are opposite to each other and are disposed on the lower surface 2162 of the loading structure 2160. The two limiting structures 2180 are configured to be placed into two opposite connecting holes 2124 and two opposite recesses 2125. The two limiting structures 2180 increase the connection stability of the first mounting structures 2122 and the second mounting structures 2170, while also facilitating the disassembly of the first mounting structures 2122 and the second mounting structures 2170.

[0202] Each of the support structures 2150 comprises: a first support segment 2151, a second support segment 2152, and a third support segment 2153. Taking one of the support structures as an example, the first support segment 2151, the second support segment 2152, and the third support segment 2153 are connected in sequence. One end of the first support segment 2151, away from the second support segment 2152, is connected to the loading structure 2160. The first support segment 2151 and the second support segment 2152 are bending, and the second support segment 2152 and the third support segment 2153 are also bending. The third support segment 2153 is inclined relative to the loading structure 2160. At least a portion of the third support segment 2153 is disposed above the receiving portion 2110. Further, the first support segment 2151 is perpendicular to the loading structure 2160, the second support segment 2152 is parallel to the loading structure 2160, and the third support segment 2153 is perpendicular to the loading structure 2160.

[0203] Furthermore, a distance L between an inner top surface 131c of the upper cover 130c and one end of the third support segment 2153 away from the second support segment 2152 is less than a predetermined value, which ensures that when one of the containers 20c is placed on the third support segment 2152, the one of the containers 20 does not contact the inner top surface 131c of the upper cover 130c and does not fall off the third support segment 2153. Further, such a configuration ensures that when the one of the containers 20c is placed on one of the support structures 2150, the one of the containers 20c is inclined relative to the horizontal plane, making it less likely for the washing liquid to remain inside the one of the containers 20c after washing. Furthermore, when one nipple hangs on the third support segment 2153, the nipple is prevented from detaching from the third support segment 2153 when shaking.

[0204] Furthermore, at least a portion of the receiving portion 2110 configured to hold containers 20c are inclined relative to the horizontal plane. In this way, it ensures that when the containers 20c are placed on the receiving portion 2110, the containers 20c are inclined relative to the horizontal plane. The horizontal plane is understood as the X-Y plane shown in FIGS. 38 and 40. An X-axis, a Y-axis, and a Z-axis define a three-dimensional coordinate system. Within the three-dimensional coordinate system, the X-axis and Y-axis define the X-Y plane, and the Z-axis is perpendicular to the X-Y plane. In the embodiment, the containers 20c are placed in an inclined state, making it less likely for the washing liquid to remain after cleaning. In this way, the containers 20c are allowed to remain tilted when being placed freely on the placement part 2110, preventing water accumulation in gaps and grooves and facilitating drying.

[0205] The receiving portion 2110 comprises a first receiving section 2111 and a second receiving section 2112. The first receiving section 2111 is disposed around a periphery of the second receiving section 2112, and the second receiving section 2112 is disposed around a periphery of the mounting portion 2120. The first receiving section 2111 comprises a first inclined structure 21111 and first through holes 21112 defined by the first inclined structure 21111, thereby forming a grid structure. In the embodiment, the first inclined structure 21111 is inclined relative to the X-Y plane, causing the containers 20c placed on the first inclined structure 21111 to be inclined relative to the X-Y plane. The second receiving section 2112 comprises a second inclined structure 21121 and second through holes 21122 defined by the second inclined structure 21121, thereby forming a grid structure. In the embodiment, the second inclined structure 21121 is inclined relative to the X-Y plane, causing the containers placed thereon to be inclined relative to the X-Y plane. Both the first inclined structure 21111 and the second inclined structure 21121 are inclined relative to the X-Y plane. Inclination degrees of the second inclined structure 21121 and the first inclined structure 21111 relative to the X-Y plane may be the same or different.

[0206] Furthermore, the upper rack 210c has a first direction F1. The first direction F1 is perpendicular to the horizontal plane. The first direction F1 is understood as the Z-axis of the three-dimensional coordinate system, perpendicular to the X-Y plane. The first direction F1 shown in FIG. 42 is equivalent to the height direction F1 of the container washing machine 10 shown in FIG. 1.

[0207] Furthermore, a highest point h1 of the first receiving section 2111 is higher than a highest point h3 of the second receiving section 2112 along the first direction F1. A lowest point h2 of the first receiving section 2111 is lower than a lowest point h4 of the second receiving section 2112 in the first direction F1. The highest point h1 of the first receiving section 2111 is connected to the lowest point h4 of the second receiving section 2112.

[0208] Furthermore, an area of the first receiving section 2111 is greater than an area of the second receiving section 2112. In the embodiment, containers with a smaller size may be placed on the second receiving section 2112, while containers with a larger size may be placed on the first receiving section 2111. For example, the first receiving section 2111 is configured to hold items such as nipples or screw caps.

[0209] In one embodiment, the rack body 211c further comprises first support rods 21113 disposed on a placement surface of the first inclined structure 21111. The first support rods 21113 are higher than the highest point h1 of the first receiving section 2111 in the first direction F1. Each of the first support rods 21113 is configured to support a container part, such as the nipple.

[0210] In one embodiment, the rack body 211c further comprises second support rods 21123 disposed on the placement surface of the second inclined structure 21121. The second support rods 21123 are higher than the highest point h3 of the second receiving section 2112 in the first direction F1. Each of the second support rods 21123 is configured to support bottle accessories such as duckbill valves for breast pumps or anti-colic silicone parts of baby bottles.

[0211] In one embodiment, the first receiving section 2111 further comprises positioning rings 21114 connected to the first inclined structure 21111. The positioning rings 21114 are located at the highest point h1 of the first receiving section 2111 in the first direction F1 and are disposed separately. Each of the positioning rings 21114 defines a positioning hole 21115, which is configured to hold an item, such as an anti-colic silicone part.

[0212] In the embodiment, hook structures (the support structures 2150) and ribs (first support rods 21113 and / or the second support rods 21123) are configured to position the container accessories, such as the nipples and other infant product parts. These configurations are configured to limit displacement of the container accessories caused by water flow during the washing process. Positions of the container accessories are limited to specific areas, thereby enhancing the cleaning effect. The hook structures (the support structures 2150) ensure that the nipples remain tilted and free to sway, significantly facilitating drainage of the washing liquid during cleaning and reducing water droplets adhering to walls of the nipples. A structure of the upper rack accelerates drying efficiency after washing and reduces water stains on the nipples.

[0213] In the embodiment, the rack body 211c comprises a through hole 2127, and the support component 212c comprises a through hole 2190. When the support component 212c is mounted on the rack body 211c, the through hole 2127 of the rack body 211c is communicated with the through hole 2190 of the support component 212c. Both the through hole 2127 of the rack body 211c and the through hole 2190 of the support component 212c are configured for passing through the main pipe of the container washing machine 10c.

Examples

Embodiment Construction

[0072]As shown in FIGS. 1-3D, a container washing machine 10 of the present disclosure defines a height direction F1 and a width direction F2. The height direction F1 and the width direction F2 are approximately perpendicular to each other. In some cases, the width direction F2 is understood as a length direction of the container washing machine 10.

[0073]The container washing machine 10 comprises an inner container 110, an upper rack 210, a main pipe 410, a lower rack 220, an upper rotating spray arm 310, and a lower rotating spray arm 320. The upper rack 210 is detachably mounted on the inner container 110. At least a portion of the upper rack 210 is placed into a washing chamber 112 through an opening 114 of the inner container 110, and the upper rack 210 is allowed to be removed from the inner container 110 through the opening 114.

[0074]Compared to the prior art where nozzles and an upper rack are directly fixed and non-detachable, the embodiment facilitates cleaning and maintena...

TECHNICAL FIELD

[0001] The present disclosure relates to a field of field of container cleaning technology, and in particular to a container washing machine.BACKGROUND

[0002] Containers such as baby bottles are everyday containers for holding milk or drinking water. A baby bottle generally consists of two main parts, which are respectively a bottle body and a nipple. Tools for cleaning the baby bottles comprise handheld cleaners, brushes, and bottle washing machines.

[0003] Conventional container washing machines typically comprise a water supply hose, nozzles fixed to the water supply hose, an upper rack, and a lower rack. The upper rack is configured to hold one or more nipples. The lower rack is configured to hold one or more bottle bodies. The water supply hose supplies water to the nozzles. The nozzles are configured to clean one or more containers, such as the one or more nipples on the upper rack and one or more containers, such as the one or more bottle bodies on the lower rack. Some of the nozzles are directly fixed to the upper rack and are unable to be removed, making it inconvenient to clean and maintain the upper rack and connection joints fixed to the upper rack.SUMMARY

[0004] The present disclosure provides a container washing machine, and an upper rack thereof is detachably mounted on an inner container thereof, so that it is convenient to clean the upper rack and an upper rotating spray arm.

[0005] The container washing machine comprises an inner container, an upper rack, a main pipe, a lower rack, an upper rotating spray arm, and a lower rotating spray arm.

[0006] The container washing machine defines a height direction. The inner container comprises a washing chamber and an opening. The upper rack is detachably mounted on the inner container. The lower rack is disposed in the washing chamber. At least a portion of the upper rack is capable of being placed in the washing chamber from the opening, and the upper rack is capable of being taken out of the inner container from the opening. The upper rotating spray arm is connected to and communicated with the main pipe. The upper rotating spray arm is rotatable around the main pipe. The lower rotating spray arm is connected to and communicated with the main pipe. The lower rotating spray arm is rotatable around the main pipe. When the upper rack is mounted on the inner container, the upper rack, the upper rotating spray arm, the lower rack, and the lower rotating spray arm are sequentially disposed in the height direction from top to bottom, with the upper rack and the upper rotating spray arm being separately disposed.

[0007] In the container washing machine of the present disclosure, cleaning and maintenance of the upper rack and the upper rotating spray arm are convenient. In the prior art, when nozzles are directly fixed to the upper rack and unable to be disassembled, application scenarios are limited. For example, in the prior art, when the upper rack is not needed to hold containers, the upper rack is unable to be removed; otherwise, the nozzles fixed to the upper rack are detached together with the upper rack, preventing the nozzles from cleaning one or more containers on the lower rack, potentially resulting in inadequate cleaning. Instead, in the present disclosure, the upper rotating spray arm and the main pipe are mounted independently and are not fixed by the upper rack. A user is able to assemble or remove the upper rack according to their needs. Even if the user removes the upper rack, the upper rotating spray arm is still able to clean the one or more containers on the lower rack, thereby ensuring cleanliness of the one or more containers on the lower rack.BRIEF DESCRIPTION OF DRAWINGS

[0008] FIG. 1 is a perspective schematic diagram of a container washing machine according to one embodiment of the present disclosure.

[0009] FIG. 2A is a partial schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0010] FIG. 2B is a cross-sectional schematic diagram of the container washing machine taken along a line A-A shown in FIG. 2A.

[0011] FIG. 2C is another partial schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0012] FIG. 2D is another partial schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0013] FIG. 3A is another partial schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0014] FIG. 3B is a cross-sectional schematic diagram of the container washing machine taken along a line B-B shown in FIG. 3A.

[0015] FIG. 3C is another partial schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0016] FIG. 3D is another partial schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0017] FIG. 4 is a schematic diagram of an inner container according to one embodiment of the present disclosure.

[0018] FIG. 5A is a schematic diagram of an upper cover according to one embodiment of the present disclosure.

[0019] FIG. 5B is a schematic diagram of the upper cover according to one embodiment of the present disclosure.

[0020] FIG. 5C is a cross-sectional schematic diagram of the upper cover taken along a line C-C shown in FIG. 5B.

[0021] FIG. 6 is a schematic diagram of an upper rotating spray arm and a main pipe according to one embodiment of the present disclosure.

[0022] FIG. 7 is a schematic diagram of the upper rotating spray arm and a lower rotating spray arm according to one embodiment of the present disclosure.

[0023] FIG. 8 is a schematic diagram of the upper rotating spray arm and the lower rotating spray arm according to one embodiment of the present disclosure.

[0024] FIG. 9A is a schematic diagram of the upper rotating spray arm and the main pipe according to one embodiment of the present disclosure.

[0025] FIG. 9B is a cross-sectional schematic diagram of the upper rotating spray arm and the main pipe taken along a line D-D shown in FIG. 9A.

[0026] FIG. 10 is another schematic diagram of the upper rotating spray arm and the main pipe according to one embodiment of the present disclosure.

[0027] FIG. 11 is a cross-sectional schematic diagram of the container washing machine shown in a configuration of use according to one embodiment of the present disclosure, where baby bottles are placed therein.

[0028] FIG. 12 is a schematic diagram of the main pipe and a lower rack according to one embodiment of the present disclosure.

[0029] FIG. 13 is an enlarged schematic diagram of portion X shown in FIG. 12.

[0030] FIG. 14 is a schematic diagram of the lower rack according to one embodiment of the present disclosure.

[0031] FIG. 15 is another schematic diagram of the lower rack according to one embodiment of the present disclosure.

[0032] FIG. 16 is another schematic diagram of the lower rack according to one embodiment of the present disclosure.

[0033] FIG. 17 is a partial schematic diagram of the lower rack according to one embodiment of the present disclosure.

[0034] FIG. 18 is a cross-sectional schematic diagram of the lower rack shown in a configuration of use, where a bottle body is placed thereon.

[0035] FIG. 19 is another cross-sectional schematic diagram of the lower rack shown in the configuration of use, where the bottle body is placed thereon.

[0036] FIG. 20 is another cross-sectional schematic diagram of the lower rack shown in the configuration of use, where the bottle body is placed thereon.

[0037] FIG. 21 is another cross-sectional schematic diagram of the lower rack shown in the configuration of use, where the bottle body is placed thereon.

[0038] FIG. 22 is another cross-sectional schematic diagram of the lower rack shown in the configuration of use, where bottle bodies are placed thereon.

[0039] FIG. 23 is another cross-sectional schematic diagram of the lower rack shown in the configuration of use, where the bottle bodies are placed thereon.

[0040] FIG. 24 is a partial schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0041] FIG. 25 is another partial schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0042] FIG. 26 is a partial cross-sectional schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0043] FIG. 27 is an enlarged schematic diagram of portion Y shown in FIG. 26.

[0044] FIG. 28 is another partial cross-sectional schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0045] FIG. 29 is another partial cross-sectional schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0046] FIG. 30 is an enlarged schematic diagram of portion Z shown in FIG. 29.

[0047] FIG. 31 is a schematic diagram of a breather according to one embodiment of the present disclosure.

[0048] FIG. 32 is another schematic diagram of the breather according to one embodiment of the present disclosure.

[0049] FIG. 33 is a block diagram of an electrical connection between an electrical control device and a drain component.

[0050] FIG. 34 is a schematic diagram of a lower rotating spray arm according to one embodiment of the present disclosure.

[0051] FIG. 35 is another schematic diagram of the lower rotating spray arm according to one embodiment of the present disclosure.

[0052] FIG. 36 is another schematic diagram of the lower rotating spray arm according to one embodiment of the present disclosure.

[0053] FIG. 37 is another schematic diagram of the lower rotating spray arm according to one embodiment of the present disclosure.

[0054] FIG. 38 is another schematic diagram of the lower rotating spray arm according to one embodiment of the present disclosure.

[0055] FIG. 39 is a schematic diagram of the lower rotating spray arm shown in a configuration of use.

[0056] FIG. 40 is a cross-sectional schematic diagram of the lower rotating spray arm shown in the configuration of use.

[0057] FIG. 41 is another cross-sectional schematic diagram of the lower rotating spray arm shown in the configuration of use.

[0058] FIG. 42 is another schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0059] FIG. 43 is a schematic diagram of the upper rack according to one embodiment of the present disclosure.

[0060] FIG. 44 is an exploded schematic diagram of the upper rack according to one embodiment of the present disclosure.

[0061] FIG. 45 is a side schematic diagram of the upper rack according to one embodiment of the present disclosure.

[0062] FIG. 46 is a schematic diagram of a rack body according to one embodiment of the present disclosure.

[0063] FIG. 47 is a schematic diagram of the rack body according to one embodiment of the present disclosure.

[0064] FIG. 48 is an enlarged schematic diagram of portion A shown in FIG. 47.

[0065] FIG. 49 is a schematic diagram of the rack body according to one embodiment of the present disclosure.

[0066] FIG. 50 is an enlarged schematic diagram of portion B shown in FIG. 49.

[0067] FIG. 51 is a schematic diagram of the rack body according to one embodiment of the present disclosure.

[0068] FIG. 52 is a schematic diagram of a support segment according to one embodiment of the present disclosure.

[0069] FIG. 53 is another schematic diagram of the support segment according to one embodiment of the present disclosure.

[0070] FIG. 54 is another schematic diagram of the container washing machine according to one embodiment of the present disclosure.

[0071] FIG. 55 is another schematic diagram of the container washing machine according to one embodiment of the present disclosure.DETAILED DESCRIPTION

[0072] As shown in FIGS. 1-3D, a container washing machine 10 of the present disclosure defines a height direction F1 and a width direction F2. The height direction F1 and the width direction F2 are approximately perpendicular to each other. In some cases, the width direction F2 is understood as a length direction of the container washing machine 10.

[0073] The container washing machine 10 comprises an inner container 110, an upper rack 210, a main pipe 410, a lower rack 220, an upper rotating spray arm 310, and a lower rotating spray arm 320. The upper rack 210 is detachably mounted on the inner container 110. At least a portion of the upper rack 210 is placed into a washing chamber 112 through an opening 114 of the inner container 110, and the upper rack 210 is allowed to be removed from the inner container 110 through the opening 114.

[0074] Compared to the prior art where nozzles and an upper rack are directly fixed and non-detachable, the embodiment facilitates cleaning and maintenance of the upper rack 210 and the upper rotating spray arm 310. In the prior art, when nozzles are directly fixed to the upper rack and unable to be disassembled, application scenarios are limited. For example, in the prior art, when the upper rack is not needed to hold containers, the upper rack is unable to be removed; otherwise, the nozzles fixed to the upper rack are detached together with the upper rack, preventing the nozzles from cleaning one or more containers on the lower rack, potentially resulting in inadequate cleaning. Instead, in the present disclosure, the upper rotating spray arm 310 and the main pipe 410 are mounted independently and are not fixed by the upper rack 210. A user is able to assemble or remove the upper rack according to their needs.

[0075] When the upper rack 210 is mounted on the inner container 110, the upper rack 210, the upper rotating spray arm 310, the lower rack 220, and the lower rotating spray arm 320 are sequentially disposed from top to bottom along the height direction F1. Furthermore, the upper rack 210 is independent from the main pipe 410 and the upper rotating spray arm 310. In other words, the upper rack is spaced apart from and does not contact the main pipe 410 and the upper rotating spray arm 310, which avoids the upper rack 210 from contacting the main pipe 410 and the upper rotating spray arm 310. Therefore, the upper rack 210 is not blocked, which increases the cleaning area of the upper rack 210 when the upper rotating spray arm 310 cleans the upper rack 210. Additionally, the upper rack 210 is independent from the main pipe 410 and the upper rotating spray arm 310, which facilitates a detachment and installation of the upper rack 210 relative to the inner container 110. The upper rack 210 is a rack designed to hold one or more nipples of one or more baby bottles.

[0076] In one embodiment, the upper rack 210 is directly mounted on an edge of the opening 114 of the inner container 110. In another embodiment, a groove structure is formed on an inner surface of the inner container 10 close to the opening 114, and the groove structure forms a step. Alternatively, a protruding step is disposed on the inner surface close to the opening 114 of the inner container 10. The upper rack 210 is then mounted on the step formed on the inner surface of the inner container 110.

[0077] The lower rack 220 is disposed inside the washing chamber 112. The lower rack 220 is detachably or non-detachably mounted on the inner surface of the inner container 110. The lower rack 220 is a rack designed to hold one or more bottle bodies and / or one or more bottle accessories of the one or more containers.

[0078] The inner container 110 provides the washing chamber 112 for the container washing machine 10 and serves as a mounting body for components of the container washing machine 10. A material of the inner container 110 comprises, but is not limited to, plastic and metal. As shown in FIG. 4, side walls of the inner container 110 are connected around edges of the bottom wall 111e to enclose and form the washing chamber 112. The washing chamber 112 defines the opening 114. For example, the side walls of the inner container 110 comprise, but are not limited to, a first side wall 111a, a second side wall 111b, a third side wall 111c, and a fourth side wall 111d. The first side wall 111a, the second side wall 111b, the third side wall 111c, and the fourth side wall 111d are sequentially connected end to end.

[0079] In one embodiment, the upper rotating spray arm 310 is detachably connected to the main pipe 410. A detachable connection method thereof comprises, but is not limited to: (1) a direct detachable connection; (2) an indirect detachable connection via a connecting pipe 330.

[0080] As shown in FIGS. 6 and 7, at least one first fastener 318 is disposed on one of the upper rotating spray arm 310 and the main pipe 410, and a second fastener 414 is disposed on the other one of the upper rotating spray arm 310 and the main pipe 410, and the at least one first fastener 318 and the second fastener 414 are detachably connected, so that the upper rotating spray arm 310 and the main pipe 410 are detachably connected. The upper rotating spray arm 310 comprises a first sub-spray arm 311 and a second sub-spray arm 312. The at least one first fastener 318 comprises two first fasteners 318. The first sub-spray arm 311 and the second sub-spray arm 312 are respectively connected to two ends of a rotating portion 313 of the upper rotating spray arm 310. The two first fasteners 318 are respectively disposed on the first sub-spray arm 311 and the second sub-spray arm 312. Each of the first fasteners 318 comprises a first elastic section 318a and a second elastic section 318b connected to the first elastic section 318a. For each of the first fasteners 318, the first elastic section 318a and the second elastic section 318b are bent relative to each other, so as to form a bending structure 318c at a connecting point thereof. Specifically, a first end of the first elastic section 318a on the first sub-spray arm 311 is fixedly connected to the first sub-spray arm 311, a first end of the first elastic section 318a on the second sub-spray arm 312 is fixedly connected to the second sub-spray arm 312, and a second end of each first elastic section 318a is bent and connected to a corresponding second elastic section 318b. Each first elastic section 318a is approximately perpendicular to the first sub-spray arm 311 and the second sub-spray arm 312. Each second elastic section 318b is inclined relative to the rotating portion 313, and a first end of each second elastic section 318b connected to a corresponding first elastic section 318a is closer to the rotating portion 313 than a second end away from the corresponding first elastic section 318a. Correspondingly, the main pipe 410 comprises a first pipe body 411 and a second pipe body 412. The first pipe body 411 is communicated with the second pipe body 412. An outer diameter of the first pipe body 411 is greater than an outer diameter of the second pipe body 412, thereby forming an arc-shaped step 413 or an inclined step 413 on an outer surface at a connecting joint of the first pipe body 411 and the second pipe body 412. Furthermore, an inner diameter of the first pipe body 411 is greater than an inner diameter of the rotating portion 313. The rotating portion 313 is disposed inside the first pipe body 411, and an inner diameter of the rotating portion 313 is approximately the same as the inner diameter of the second pipe body 412. The second fastener 414 comprises a protruding ring 414a disposed around the outer surface of the first pipe body 411.

[0081] A connection process of the upper rotating spray arm 310 and the main pipe 410 is as follows. The rotating portion 313 is aligned with an opening of the first pipe body 411, and then the rotating portion 313 is inserted into the first pipe body 411. Simultaneously, each second elastic section 318b is positioned on an outside of the first pipe body 411. The rotating portion 313 continues to insert into the first pipe body until a portion of each second elastic section 318b close to the corresponding first elastic section 318a contacts an outer surface of the first pipe body 411. As the rotating portion 313 is further inserted into the first pipe body 411, each first elastic section 318a and each second elastic section 318b deform under force, causing each bending structure 318c to snap onto the protruding ring 414a. Thus, the upper rotating spray arm 310 is rotatable around the main pipe 410 through a connection between each bending structure 318c and the protruding ring 414a.

[0082] As shown in FIG. 10, the upper rotating spray arm 310 is detachably connected to the connecting pipe 330, and the upper rotating spray arm 310 is rotatable around the connecting pipe 330 and the main pipe 410 as a rotating axis. The connecting pipe 330 and the main pipe 410 are connected by one of connection methods, such as a snap-fit connection, a screw connection, an adhesive connection, or welding. A detachable connection method between the upper rotating spray arm 310 and the connecting pipe 330 may refer to the detachable connection method between the upper rotating spray arm 310 and the main pipe 410 shown in FIG. 6, which is not repeated described herein.

[0083] A non-detachable connection method between the upper rotating spray arm 310 and the main pipe 410 comprises, but is not limited to, structures that enable a rotation of the upper rotating spray arm 310 relative to the main pipe 410 are disposed inside the main pipe 410. For instance, as shown in FIGS. 9A-9B, a groove 414b is disposed on an inner wall of the main pipe 410, and a protrusion 318d is disposed on an outer surface of the rotating portion 313. The protrusion 318d is disposed in the groove 414b and is rotatable in the groove 414b. An example of a connection process is as follows. The main pipe 410 is divided into two portions, the rotating portion 313 is placed at a predetermined position inside the main pipe 410, and then the two portions of the main pipe 410 are welded together. Specifically, the groove 414b is disposed on an inner wall of the first pipe body 411 and is close to the second pipe body 412.

[0084] As shown in FIG. 8, the lower rotating spray arm 320 and the main pipe 410 are detachably or non-detachably connected. A connection relationship between the lower rotating spray arm 320 and the main pipe 410 may refer to the connection method between the upper rotating spray arm 310 and the main pipe 410, which is not repeated herein.

[0085] As shown in FIGS. 6-8, the first sub-spray arm 311 and the second sub-spray arm 312 comprise first spray holes 314, while a third sub-spray arm 321 and a fourth sub-spray arm 322 of the lower rotating spray arm 320 comprise second spray holes 324. In one embodiment, opening directions of the first spray holes 314 and opening directions of the second spray holes 324 face upward along the height direction F1. At least part of the opening directions of the first spray holes and at least part of the opening directions of the second spray holes are tilted relative to the height direction F1. In one embodiment, the opening directions of at least part of the first spray holes 214 on the first sub-spray arm 311 are different, the opening directions of at least part of the first spray holes 314 on the second sub-spray arm 312 are different, the opening directions of at least part of the second spray holes 324 on the third sub-spray arm 321 are different and the opening directions of at least part of the second spray holes 324 on the fourth sub-spray arm 322 are different.

[0086] In one embodiment, the first sub-spray arm 311 defines a first power hole 316, and the second sub-spray arm 312 defines a second power hole 317. An opening direction of the first power hole 316 is at least partially opposite to an opening direction of the second power hole 317. The third sub-spray arm 321 defines a third power hole 326, and the fourth sub-spray arm 322 defines a fourth power hole 327. An opening direction of the third power hole 326 is at least partially opposite to an opening direction of the fourth power hole 327. In one embodiment, the opening direction of the first power hole 316 partially faces downward along the height direction F1, and the opening direction of the second power hole 317 partially faces downward along the height direction F1. In another embodiment, the opening direction of the first power hole 316 partially faces downward along the height direction F1, while the opening direction of the second power hole 317 is perpendicular to the height direction F1. In yet another embodiment, the opening direction of the first power hole 316 and the opening direction of the second power hole 317 are perpendicular to the height direction F1 and are opposite to each other. For instance, the first power hole 316 is disposed on one side of the first sub-spray arm 311, and the second power hole 317 is disposed on one side of the second sub-spray arm 312. In other alternative embodiments, the lower rotating spray arm 320 comprises only one power hole, that is, the third sub-spray arm 321 comprises the third power hole 326 or the fourth sub-spray arm 322 comprises the fourth power hole 327. In other alternative embodiments, the upper rotating spray arm 310 comprises only one power hole, that is, the first sub-spray arm 311 comprises the first power hole 316, or the second sub-spray arm 312 comprises the second power hole 317.

[0087] In one embodiment, the opening direction of the third power hole 326 partially faces downward along the height direction F1, and the opening direction of the fourth power hole 327 partially faces downward along the height direction F1. In another embodiment, the opening direction of the third power hole 326 partially faces downward along the height direction F1, while the opening direction of the fourth power hole 327 is perpendicular to the height direction F1. In yet another embodiment, the opening direction of the third power hole 326 and the opening direction of the fourth power hole 327 are perpendicular to the height direction F1 and are opposite to each other. For example, the third power hole 326 is disposed on one side of the third sub-spray arm 321, and the fourth power hole 327 is disposed on one side of the fourth sub-spray arm 322.

[0088] When washing liquid is injected, the power holes (i.e., the four power holes mentioned above), the power holes provide power to the upper rotating spray arm 310 and the lower rotating spray arm 320 and drive the upper rotating spray arm 310 and the lower rotating spray arm 320 to rotate. When the washing liquid is injected, the spray holes are configured to spray the washing liquid onto the clean items inside the washing chamber 112, such as the one or more baby bottles.

[0089] In one embodiment, each sub-spray arm of the upper rotating spray arm 310 comprises at least four spray holes spraying in different directions to ensure a spray coverage. Further, each sub-spray arm of the upper rotating spray arm 310 comprises at least one power hole to ensure rotation. Each sub-spray arm of the lower rotating spray arm 320 comprises at least three spray holes facing upward to ensure a spray coverage. Further, each sub-spray arm of the lower rotating spray arm 320 comprises at least one power hole defined on one side thereof to ensure rotation. As shown in FIG. 10, the first sub-spray arm 311 comprises two first power holes 316.

[0090] The upper rotating spray arm 310 and the lower rotating spray arm 320 are components that serve functions of water intake and spraying. The upper rotating spray arm 310 and the lower rotating spray arm 320 are driven to rotate by water power while spraying the water to wash items. The main pipe 410 is a pipe body configured to convey the washing liquid.

[0091] As shown in FIGS. 5A-5C, the container washing machine 10 further comprises an upper cover 130. The upper cover 130 is configured to cover or expose the opening 114 of the inner container 110. For instance, the upper cover 130 comprises a handle 133 and a cover portion 131. The cover portion 131 is transparent. The handle 133 is disposed on an outer surface of the cover portion 131, is close to a center or located at the center of the cover portion 131. The upper cover 130 further comprises exhaust holes 132 penetrating the cover portion 131. The upper cover 130 is a sealing cover with the exhaust holes 132 and is configured to discharge steam during a drying process of the one or more baby bottles. The exhaust holes 132 are inclined relative to the height direction F1, thereby realizing an overflow prevention design. The steam is discharged from the center of the cover portion 131 through the exhaust holes 132 toward two sides of the cover body. The exhaust holes 132 on two sides are inclined, so that when the washing liquid from any sub-spray arm splashes into the exhaust holes 132, the washing liquid may flow back into the inner container 110 along sloped surfaces of the exhaust holes.

[0092] One or more fans 500 are disposed on an outer side of the inner container 110. For instance, at least two fans 500 are provided. The container washing machine 10 further comprises a housing 120 disposed around a periphery of the side walls of the inner container 110. The housing 120 covers the at least two fans 500, providing protection for the at least two fans 500 and other components therein. The at least two fans 500 are configured to introduce air into an interior of the inner container 110. Specifically, each of fans 500 comprises an air inlet 502 and an air outlet 504 communicated with the air inlet 502, and the air outlet 504 thereof is connected to a predetermined position. Correspondingly, the inner container 110 defines at least two air inlets 116 penetrating the first side wall 111a. Each air outlet 504 is communicated with a corresponding one of the air inlets 116 of the inner container 110. The at least two fans 500 are configured to convey air to a predetermined position inside the inner container 110. The predetermined position of the inner container 10 in an inlet 222 of at least one air duct 221 on the lower rack 220 disposed inside the washing chamber 112, or the predetermined position of the inner container 10 is other positions within the washing chamber 112 of the inner container 110. It should be understood that the predetermined position is set according to actual needs and is not limited thereto. Specifically, the air outlet 504 of each of the fans 500 is communicated with the corresponding one of the air inlets 116, and each of the air inlets 116 is communicated with the inlet 222 of the at least one air duct 221. For example, a size of each of the air inlets 116 is greater than a size of the at least one air duct 221. Furthermore, each of the air inlets 116 comprises a first port 116a and a second port 116b. Each first port 116a is communicated with the inlet 222 of the at least one air duct 221, and each second air inlet 116b is directly communicated with the washing chamber 112. The at least one air duct 221 comprises one or two air ducts 221.

[0093] Each of the fans 500 is capable of conveying air into the at least one air duct 221 of the lower rack 220 through each first port 116a, so as to dry the one or more bottle bodies or the one or more bottle accessories placed on the lower rack 220. Each of the fans 500 is also capable of directly conveying the air into the washing chamber 112 through each second port 116b to dry items within the washing chamber 112, such as the one or more nipples on the upper rack 210. Furthermore, the container washing machine 10 further comprises a first heating device 610 disposed outside the inner container 110. The first heating device 610 is configured to heat the air conveyed by the at least two fans 500. In one scenario, the first heating device 610 is disposed on one of the at least two fans 500. The first heating device 610 is mounted inside an air duct of the one of the at least two fans 500 (i.e., between the air inlet 502 and the air outlet 504 thereof), so that the air conveyed from the air outlet 504 of the one of the at least two fans 500 is hot air.

[0094] The at least two fans 500 are mounted on an outer surface of one or more side walls of the inner container 110. For example, two fans 500 are provided and are mounted on the first side wall 111a of the inner container 10. The two fans 500 are disposed side by side along the width direction F2. A projection of the two fans 500 onto the inner container 110 completely falls within the first side wall 111a of the inner container 110, ensuring that the two fans 500 do not exceed the edges of the inner container 110. In this way, a space of the inner container 110 is efficiently used. A total width of the two fans 500 is approximately equal to a width of the inner container 110. Compared to two fans having a larger total width, the two fans in the embodiment save space. Compared to two fans having a smaller total width, the two fans in the embodiment avoid wasting space. The two fans 500 comprise, but are not limited to, a first fan 510 and a second fan 520.

[0095] The edge of the opening 114 of the inner container 110 protrudes outward to form shielding portions. Specifically, an edge of the first side wall 111a of the inner container 110a protrudes outward to form a first shielding portion 113a. The first side wall 111a and the first shielding portion 113a jointly define a first mounting space 118a. The two fans 500 are mounted in the first mounting space. Similarly, an edge of the second side wall 111b of the inner container 110a protrudes outward to form a second shielding portion 113b. The second side wall 111b and the second shielding portion 113b jointly define a second mounting space 118b. The container washing machine 10 further comprises a water tank 440 of a water supply device 400. The water tank 440 is mounted in the second mounting space 118b and is configured to store the washing liquid, such as washing water. It is understood that the water tank 440 is communicated with the main pipe 410 and supplies the washing liquid to the main pipe 410. Furthermore, the container washing machine 10 comprises a display 750. The display 750 is mounted in the second mounting space 118b with a display surface thereof facing away from the second side wall 111b, so that the display surface is exposed and is allowed to be observed by the user. In one optional configuration, the display 750 is a touch screen triggered by touch control operations of the user. Specifically, the first mounting space 118a is opposite to the second mounting space 118b.

[0096] Devices, such as an electrical control device 710, a first water pump 420 of the water supply device 400, and a second water pump 430 of the water supply device 400, are disposed on an outer surface of the bottom wall 111e of the inner container 10. The container washing machine 10 further comprises a base 140 disposed below the bottom wall 111e along the height direction F1. The base 140 is configured to cover the electrical control device 710, the first water pump 420, and the second water pump 430. The base 140 is connected to the bottom wall 111e and the housing 120. For instance, outer surfaces of edges of the base 140 are flush with outer surfaces of edges of the housing 120.

[0097] As shown in FIG. 4, a water inlet hole 119 is defined on the inner container 110. The water inlet hole 119 communicates the main pipe 410 with the washing liquid. In one embodiment, the water inlet hole 119b is formed on the bottom wall 111e. Optionally, the water inlet hole 119b is formed on a center of the bottom wall 111e of the inner container 10. Specifically, the main pipe 410 is connected to the bottom wall 111e, and a passage of the main pipe 410 is aligned with and communicated with the water inlet hole 119b. A mounting structure 119a is disposed on the bottom wall 111e of the inner container 10, and the mounting structure 119a is fixedly connected to the main pipe 410. The second water pump 430 is connected to and communicated with the water tank 440 via a first hose 451. The second water pump 430 is connected to and communicated with the inner container 110 via a second hose 452. The second water pump 430 is configured to drive the washing liquid from the water tank 440 into the washing chamber 112 of the inner container 110. The first water pump 420 is configured to pressurize the washing liquid in the washing chamber 112 and pump the washing liquid into the main pipe 410. The washing liquid is then conveyed through the main pipe 410 to the lower rotating spray arm 320 and the upper rotating spray arm 310. The second water pump 430 is any pump capable of pumping and discharging water, and the first water pump 420 is any pump capable of pumping, discharging, and pressurizing water.

[0098] Furthermore, the container washing machine 10 further comprises a second heating device 630 configured to heat the washing liquid driven by the second water pump 430. The electrical control device 710 is electrically connected to the two fans 500, the display 750, the first heating device 610, the second heating device 630, the first water pump 420, and the second water pump 430, (e.g., via wires). The electrical control device 710 comprises a printed circuit board (PCB). The PCB is configured to control these components and is fixed to the bottom wall 111e by screws. It should be noted that the electrical control device 710 is alternatively disposed on one of the side walls of the inner container 110.

[0099] Furthermore, the container washing machine 10 further comprises a drain component 460. The drain component 460 is connected to a drain hole 117a of the inner container 110 and is configured to discharge the washing liquid from the washing chamber 112 to an outside. The container washing machine 10 further comprises a drain pipe 453. The drain pipe 453 is sleeved with a drain portion 117 disposed on a bottom portion of the inner container 110. The drain portion 117 is communicated with the drain hole 117a. The drain component 460 is disposed on the drain pipe 453 to control opening and closing of the drain pipe 453. As shown in FIG. 2B, the washing liquid first flows from the drain hole 117a of the washing chamber 112 into the drain portion 117, then into the drain pipe 453. When the drain component 460 is open, the washing liquid flows along a drain direction F3 to a drain outlet 453a and is then discharged. The drain component 460 is a solenoid valve capable of controlling opening and closing of the drain pipe. The drain component 460 is electrically connected to the electrical control device 710. In one embodiment, the drain component 460 is a drain pump configured to discharge the washing liquid from the drain pipe 453 when powered. In another embodiment, the drain component 460 is a drain valve that is the solenoid valve capable of controlling opening and closing. By opening and closing the drain pipe 453, the drain valve allows the washing liquid in the drain pipe 453 to be discharged by gravity.

[0100] For instance, the first water pump 420 is directly fixed to a mounting shell 115 disposed on the bottom portion of the inner container 110. The first water pump 420 directly pumps water within a space defined by the mounting shell 115 to provide stronger power.

[0101] Furthermore, the mounting shell 115 is communicated with the drain portion 117 through the drain hole 117a. The drain portion 117 and the drain component 460 are communicated via the drain pipe 453. The drain portion 117 and the first water pump 420 are disposed adjacent to each other.

[0102] In the height direction F1, a position of an inner bottom surface of the mounting shell 115 is defined as a first water level point P1, and a position of the drain hole 117a is defined as a second water level point P2. In the height direction F1, the first water level point Pl is lower than the second water level point P2. When the drain component 460 is open, the washing liquid in the inner container 110 is discharged sequentially through the mounting shell 115, the drain hole 117a, the drain portion 117, and the drain pipe 453 under the action of a force, while a portion of the washing liquid remains inside the mounting shell 115 to prevent the first water pump 420 from running dry and being damaged. The force is an external driving force or gravity.

[0103] It should be noted that when the washing liquid is introduced inside the inner container 110, the lower rack 220 and each air inlet 116 are located above the washing liquid. As shown in FIG. 2C, the container washing machine 10 further comprises a liquid level sensor 730 electrically connected to the electrical control device 710. The liquid level sensor 730 is mounted inside the inner container 110 to detect a level of the washing liquid in the inner container 110. The liquid level sensor 730 is a sensor capable of non-contact water level sensing.

[0104] As shown in FIG. 11, an exemplary operation process of the water supply device 400 in the embodiment is as follows. The washing liquid from the water tank 440 is pumped into the inner container 110 by the second water pump 430. During this process, the washing liquid is heated by passing through the second heating device 630. Heated washing liquid is pressurized by the first water pump 420 and then pumped into the water inlet 415 of the main pipe 410 from the water inlet hole 119b of the inner container 110. A portion of the washing liquid then enters the lower rotating spray arm 320 from a diverter port 416 of the main pipe 410. After entering the lower rotating spray arm 320, the washing liquid is sprayed through the power holes and the spray holes of the lower rotating spray arm 320. Water columns sprayed by the power holes of the lower rotating spray arm 320 provide a motive force to rotate the lower rotating spray arm 320. The spray holes of the lower rotating spray arm 320 spray the washing liquid upwards to clean the one or more bottle bodies 21 of the one or more baby bottles 20 and the one or more bottle accessories placed on the lower rack 220. Remaining washing liquid in the main pipe 410 moves upward and enters the water inlet 319 of the upper rotating spray arm 310 through a water outlet 417. After entering the upper rotating spray arm 310, the washing liquid is sprayed through the power holes and the spray holes of the upper rotating spray arm 310. The water columns sprayed by the power holes of the upper rotating spray arm 310 provide a motive force to rotate the upper rotating spray arm 310 and further spray downward to clean the one or more bottle bodies 21 and the one or more bottle accessories placed on the lower rack 220. The spray holes of the upper rotating spray arm 310 spray the washing liquid upwards to clean the one or more nipples 22 of the one or more baby bottles 20 placed on the upper rack 210. After spraying, all the washing liquid flows back to the bottom portion of the inner container 110 under gravity and is discharged through the drain component 460. After all the washing liquid is drained, the container washing machine enters a drying stage. At this point, the drain component 460 is closed, and the two fans 500 start working. Hot air from the first fan 510 and / or the second fan 520 is blown out from the air outlet 504. Part of the hot air enters the at least one air duct 201 through the inlet 222 of the lower rack 220, while the other part of the hot air enters the washing chamber 112 directly through each air inlet 116 of the inner container 110. The hot air entering the at least one air duct 201 of the lower rack 220 exits from the air outlet of the lower rack 220 and performs hot-air drying on inner walls of the one or more bottle bodies 21 and the one or more bottle accessories placed on the lower rack 220. The hot air that directly enters the washing chamber 112 directly dries inner walls of the inner container 110 and the one or more nipples on the upper rack 210. Water vapor generated during the drying process is discharged into the air through the exhaust holes 132 on the upper cover 130.

[0105] Furthermore, the upper rotating spray arm 310 and the lower rotating spray arm 320 are rotatable around the main pipe 410. The lower rotating spray arm 320 is close to a bottom end of the main pipe 410, while the upper rotating spray arm 310 is close to a top end of the main pipe 410. It should be noted that in practical applications, during the rotation of the upper rotating spray arm 310, the upper rotating spray arm 310 may shake the main pipe 410, which in turn affects the stable rotation of the upper rotating spray arm 310 around the main pipe 410. Therefore, as shown in FIGS. 12 and 13, in the embodiment of the present disclosure, a wall thickness of a portion of the main pipe 410 close to the bottom end is designed to be greater than a wall thickness of a portion of the main pipe 410 close to the top end. In this way, the stability of the main pipe 410 is improved, thereby enhancing the stability during the rotation of the upper rotating spray arm 310. Furthermore, in the embodiment of the present disclosure, the lower rack 220 contacts the main pipe, and a mounting position of the lower rack 220 is adjacent to a mounting position of the lower rotating spray arm 320, which further constrains and enhances the stability of the main pipe 410.

[0106] Furthermore, the main pipe 410 comprises, from bottom to top along the height direction F1, a first pipe segment 410a, a second pipe segment 410b, a third pipe segment 410c, and a fourth pipe segment 410f. The second pipe segment 410b is configured to connect to the lower rotating spray arm 320 to allow the rotation of the lower rotating spray arm 320. The third pipe segment 410c is configured to contact the lower rack 220 and is positioned by the lower rack 220 to maintain the stability of the main pipe 410. The fourth pipe segment 410f is configured to connect to the upper rotating spray arm 310 to allow the rotation of the upper rotating spray arm 310.

[0107] Specifically, an outer diameter of the first pipe segment 410a, an outer diameter of the second pipe segment 410b, an outer diameter of the third pipe segment 410c, and an outer diameter of the fourth pipe segment 410f decrease sequentially, which gives the main pipe 410 an overall structure where an upper portion thereof has a smaller outer diameter than a lower portion thereof, thereby enhancing the stability of the main pipe 410 and consequently improving the stability of the upper rotating spray arm 310 during rotation.

[0108] The lower rack 220 comprises a mounting hole 224 for the main pipe 410 to pass through. The lower rack 220 further comprises a limiting ring 223 defining the mounting hole 224. An inner diameter of the limiting ring 223 is approximately equal to the outer diameter of the third pipe segment 410c. For instance, an outer surface of the pipe wall 410c1 of the third pipe segment 410c fully abuts against an inner surface of the limiting ring 223.

[0109] Furthermore, the main pipe 410 further comprises a protruding ring 418. The protruding ring 418 is disposed on the second pipe segment 410b or is disposed at a connection junction between the second pipe segment 410b and the third pipe segment 410c. The limiting ring 223 is positioned on a top surface of the protruding ring 418. Thus, a weight of a portion of the lower rack 220 acts directly on the protruding ring 418, which enhances the stability of the main pipe 410, particularly during the rotation of the upper rotating spray arm 310, ensuring that the upper rotating spray arm 310 is rotatable stably around the main pipe 410.

[0110] Furthermore, the main pipe 410 further comprises a transition segment 410d and a connecting segment 410e. The connecting segment 410e is connected between the transition segment 410d and the fourth pipe segment 410f, while the transition segment 410d is connected between the third pipe segment 410c and the connecting segment 410e. A thickness of a pipe wall 410d1 of the transition segment 410d gradually increases from a first end thereof connected to the connecting segment 410e to a second end thereof connected to the third pipe segment 410c. The thickness of the pipe wall 410d1 of the transition segment 410d is greater than a thickness L1 of a pipe wall 410el of the connecting segment 410e and is less than a thickness L2 of a pipe wall 410c1 of the third pipe segment 410c. The transition segment 410d facilitates the placement of the limiting ring 223 onto the third pipe segment 410c.

[0111] Furthermore, the thickness L2 of the pipe wall 410c1 of the third pipe segment 410c is greater than a wall thickness at other positions of the main pipe 410, which enhances a strength of the main pipe at a contact area between the lower rack 220 and the third pipe segment 410c. For instance, when the weight of the portion of the lower rack 220 acts on the third pipe segment 410c, the wall thickness of the third pipe segment 410c ensures the stability of the main pipe.

[0112] As shown in FIGS. 14-23, one embodiment of the present disclosure provides a positioning assembly 800. The positioning assembly 800 comprises at least one inner limiting piece, at least one outer limiting piece, and inclined support pieces. The at least one inner limiting piece is configured to be placed inside a container from an opening of the container and to limit a position of an inner wall of the corresponding container. The at least one outer limiting piece is configured to be placed outside the container to limit a position of an outer wall of the corresponding container. The inclined support pieces are spaced apart from each other. The inclined support pieces are connected to the at least one inner limiting piece. The inclined support pieces are configured to support an edge of the opening of the corresponding container, so that the container is in an inclined state. In the embodiment, the container is exemplified by a bottle body of one of the one or more baby bottles.

[0113] In one optional embodiment, the positioning assembly 800 comprises first positioning assembly 810. The first positioning assembly 810 comprises at least one inner limiting piece 811, at least one outer limiting piece 812, and first inclined support pieces 813. When the at least one inner limiting piece 811 comprises only one inner limiting piece 811, for example, a first inner limiting piece 811, the first inner limiting piece 811 is configured to be placed inside a first container 21a through an opening of the first container 21 to limit an inner wall of the first container 21a. When the at least one outer limiting piece 812 comprises only one outer limiting piece 812, for example, a first outer limiting piece 812, the first outer limiting piece 812 is configured to be disposed outside the first container 21a to limit an outer wall of the first container 21a. The first inclined support pieces 813 are spaced apart from each other and are connected to the first inner limiting piece 811. The first inclined support pieces 813 are configured to support an edge of the opening of the first container 21a, thereby holding the first container 21a in an inclined state.

[0114] For example, the first positioning assembly 810 further comprises a first support base 814 connected to the first inclined support pieces 813. At least two of the first inclined support pieces 813 extend upward from a top surface 814a of the first support base 814. Distances between top surfaces 813a of at least two of the first inclined support pieces 813 and a top surface 814a of the first support base 814 are different, allowing the first container 21a to be placed on the first inclined support pieces 813 in the inclined state. Further, the first outer limiting piece 812 is connected to the first support base 814 and is located on the top surface 814a of the first support base.

[0115] The first positioning assembly 810 further comprises a first reinforcing base 815. The first reinforcing base 815 is connected to at least two of the first inclined support pieces 813. The first reinforcing base 815 is surrounded by and spaced apart from the first support base 814. Both the first reinforcing base 815 and a first limiting body 811a of the first inner limiting piece 811 are arc-shaped structures. An opening direction defined by the first reinforcing base 815 is opposite to an opening direction defined by the first limiting body 811a of the first inner limiting piece 811. Further, parts of the first inclined support pieces 813 extend inward from an inner surface of the first support base 814 to connect with first limiting walls 811b of the first inner limiting piece 811 and two ends of the first reinforcing base 815, so that the first support base 814, the first support pieces 813, the first inner limiting piece 811, and the first reinforcing base 815 are connected together, thereby ensuring a strength of the first positioning assembly 810. Thus, the first positioning assembly provides stable support and positioning for the first container 21a.

[0116] First ends of first limiting walls 811b are connected to the first limiting body 811a, and second ends of the first limiting walls 811b are connected to part or all of the first inclined support pieces 813. Specifically, two first limiting walls 811b are connected to the two ends of the first reinforcing base 815 via two first inclined support pieces 813. The first limiting walls 811b are inclined relative to the top surfaces 813a of the first inclined support pieces 813.

[0117] Furthermore, the first limiting body 811a of the first inner limiting piece 811 is an arc-shaped structure, and the first outer limiting piece 812 is also an arc-shaped structure. The opening direction defined by the first limiting body 811a is opposite to an opening direction defined by the first outer limiting piece 812. That is, the opening direction defined by the first outer limiting piece 812 is the same as the opening direction defined by the first reinforcing base 815.

[0118] There is one first inner limiting piece 811 and one first outer limiting piece 812 in one first positioning assembly 810. A height of one or more of the first inclined support pieces 813 away from the first outer limiting piece 812 is greater than a height of one or more of the first inclined support pieces 813 closer to the first outer limiting piece 812. Thus, it ensures that when the first container 21a is placed on the first inclined support pieces 813, the outer wall of the first container 21a contacts and is positioned by the first outer limiting piece 812. Naturally, it further ensures that the inner wall of the first container 21a contacts and is positioned by the first inner limiting piece 811. For instance, heights of the first inclined support pieces 813 gradually decrease from those away from the first outer limiting piece 812 to those closer to the first outer limiting piece 812.

[0119] In one optional embodiment, the positioning assembly 800 comprises a second positioning assembly 820. The second positioning assembly 820 comprises at least one inner limiting piece 821, at least one outer limiting piece 822, and second inclined support pieces 823. When the at least one inner limiting piece 821 comprises only one inner limiting piece 821, for example, a second inner limiting piece 821, the second inner limiting piece 821 is configured to be placed inside the first container 21a or a second container 21b through the opening thereof to limit the inner wall of the first container 21a or an inner wall of the second container 21b. The at least one outer limiting piece 822 is, for example, two second outer limiting pieces 822. The two second outer limiting pieces 822 are disposed outside the first container 21a or the second container 21b to limit the outer wall of the first container 21a or an outer wall of the second container 21b. The second inclined support pieces 823 are spaced apart from each other and are connected to the second inner limiting piece 821. The second inclined support pieces 823 are configured to support the edge of the opening of the first container 21a or an edge of the opening of the second container 21b, thereby holding the first container 21a or the second container 21b in an inclined state.

[0120] Furthermore, the second positioning assembly 820 further comprises a second support base 824 connected to the second inclined support pieces 823. At least two of the second inclined support pieces 823 extend upward from a top surface 824a of the second support base 824. Distances between the top surfaces 823a of the at least two of the second inclined support pieces 823 and the top surface 824a of the second support base 824 are different, allowing the first container 21a or the second container 21b to be placed on the second inclined support pieces 823 in the inclined state. Moreover, the two second outer limiting pieces 8222 are connected to the second support base 824 and are disposed on the top surface 824a of the second support base 824. Further, the two second outer limiting pieces 822 comprise a primary limiting piece 822a and an auxiliary limiting piece 822b. The primary limiting piece 822a is connected to the second support base 824 and is located on the top surface 824a of the second support base 824. The auxiliary limiting piece 822b is directly mounted on a pipeline 900 of the lower rack 220.

[0121] The second positioning assembly 820 further comprises a second reinforcing base 825. The second reinforcing base 825 is connected to at least two of the second inclined support pieces 823. The second reinforcing base 825 is surrounded by and spaced apart from the second support base 824. Both the second reinforcing base 825 and a second limiting body 821a of the second inner limiting piece 821 are arc-shaped structures. An opening direction defined by the second reinforcing base 825 is opposite to an opening direction defined by the second limiting body 821a of the second inner limiting piece 821. Further, parts of the second inclined support pieces 823 extend inward from an inner surface of the second support base 824 to connect with second limiting walls 821b of the second inner limiting piece 821 and two ends of the second reinforcing base 825. In this way, the second support base 824, the second support pieces 823, the second inner limiting piece 821, and the second reinforcing base 825 are connected together, thereby ensuring a strength of the second positioning assembly 820. Thus, the second positioning assembly 820 provides stable support and positioning for the first container 21a or the second container 21b.

[0122] First ends of the second limiting walls 821b are connected to the second limiting body 821a, and second ends end of the second limiting walls 821b are connected to part or all of the second inclined support pieces 823. Two of the second limiting walls 821b are connected to the two ends of the second reinforcing base 825 via two of the second inclined support pieces 823. The second limiting walls 821b are inclined relative to the top surfaces 823a of the second inclined support pieces 823.

[0123] Furthermore, the two second outer limiting pieces 822, namely the primary limiting piece 822a and the auxiliary limiting piece 822b, are disposed opposite to each other. The second inner limiting piece 821 is disposed between the primary limiting piece 822a and the auxiliary limiting piece 822b. Further, a height of the primary limiting piece 822a is greater than a height of the auxiliary limiting piece 822b.

[0124] Additionally, a height of one or more of the second inclined support pieces 823 away from the primary limiting piece 822a is greater than a height of one or more of the second inclined support pieces 823 closer to the primary limiting piece 822a. Therefore, it ensures that when the first container 21a or the second container 21b is placed on the second inclined support pieces 823, a contact area between the outer wall of the first container 21a or the outer wall of the second container 21b and the primary limiting piece 822a is greater than a contact area between the outer wall of the first container 21a or the outer wall of the second container 21b and the auxiliary limiting piece 822b. For instance, the height of the second inclined support pieces 823 gradually decreases from those farther from the primary limiting piece 822a to those closer to the primary limiting piece 822a. The opening of the second container 21b is larger than the opening of the first container 21a. When the second container 21b is placed on the second positioning assembly 820, the outer wall of the second container 21b is limited by both the primary limiting piece 822a and the auxiliary limiting piece 822b.

[0125] To enhance the stability of the positioning assembly 800, such as the second positioning assembly 820, in supporting and positioning different containers, in one optional embodiment, each of the second inclined support pieces 823 has a step structure 826. Each step structure 826 defines a first step surface 826a and a second step surface 826b having a different height relative to the first step surface 826a. Each first step surface 826a is closer to the second inner limiting piece 821 compared to each second step surface 826b, and a height of each first step surface 826a is lower than the height of the second step surface 826b. Each first step surface 826a is configured to support the first container 21a, while each second step surface 826b is configured to support the second container 21b. It should be noted that each step structure 826 in the embodiment is not limited to having two step surfaces; each step structure 826 may have three or other numbers of step surfaces. It should be noted that in other embodiments of the present disclosure, step structures may be disposed on other structures. For instance, the first positioning assembly 810 further comprises step structures, each of which may be referred to as the step structure 826 and are not described in detail herein.

[0126] In one optional embodiment, as shown in FIGS. 14-23, the positioning assembly 800 comprises a third positioning assembly 830. The third positioning assembly 830 comprises at least one inner limiting piece 831 and third inclined support pieces 833. The at least one inner limiting piece 83 is, for example, a third inner limiting piece 831. The third inner limiting piece 831 is configured to be placed inside a third container 23 through an opening thereof to limit an inner wall of the third container 23. The third inclined support pieces 833 are spaced apart from each other and are connected to the at least one third inner limiting piece 831. The third inclined support pieces 833 are configured to support an edge of the opening of the third container 23, thereby holding the third container 23 in an inclined state. In the embodiment, the third container is a bottle accessory of the one or more baby bottles, such as an air guide tube, which is also referred to as an anti-colic air tube.

[0127] Furthermore, each of the third inclined support pieces 833 comprises a step structure 836. Each step structure 836 defines a first step surface 836a and a second step surface 836b having a different height relative to the first step surface 836a. The first step surface 836a of each step structure 836 is closer to the third inner limiting piece 831 compared to the second step surface 836b of each step structure 836. The first step surface 836a of each step structure 836 is configured to support a first type of the anti-colic air tube, while the second step surface 836b of each step structure 836 is configured to support a second type of the anti-colic air tube. It should be noted that each step structure 836 in the embodiment is not limited to having two step surfaces. Each step structure 836 may have three or other numbers of step surfaces.

[0128] Furthermore, the third positioning assembly 830 further comprises a third support base 834. The third support base 834 is connected to the third inclined support pieces 833. At least two of the third inclined support pieces 833 extend upward from a top surface 834a of the third support base 834. Distances between the top surfaces 833a of the at least two of the third inclined support pieces 833 and the top surface 834a of the support base 834 are different, allowing the third container 23 to be placed on the third inclined support pieces 833 in the inclined state.

[0129] Furthermore, the third positioning assembly 830 further comprises a third reinforcing base 835. The third reinforcing base 835 is connected to at least two of the third inclined support pieces 833. The third reinforcing base 835 is surrounded by and spaced apart from the third support base 834. Therefore, the third inclined support pieces 833, the third inner limiting piece 831, the third support base 834, and the third reinforcing base 835 are connected together, thereby enhancing the stability of the third positioning assembly 830.

[0130] Alternatively, the at least one inner limiting piece 831 comprises two third inner limiting pieces 831: that is, a primary limiting piece 831c and an auxiliary limiting piece 831d. The auxiliary limiting piece 831d is disposed on the top surface of the third reinforcing base 835. Both the third reinforcing base 835 and a third limiting body 831a of the primary limiting piece 831c are arc-shaped structures. An opening direction defined by the third reinforcing base 835 is opposite to an opening direction defined by the third limiting body 831a. The primary limiting piece 831c comprises the third limiting body 831a and third limiting walls 831b. The third limiting body 831a is an arc-shaped structure. First ends of the third limiting walls 831b are connected to the third limiting body 831a, and second ends of the third limiting walls 831b are connected to part or all of the third inclined support pieces 833. The third limiting walls 831b are inclined relative to the top surfaces 833a of the third inclined support pieces 833.

[0131] As shown in FIGS. 14-23, one embodiment of the present disclosure provides the lower rack 220. The lower rack 220 comprises one or more positioning assemblies 800. Each positioning assembly 800 is any one of the positioning assembly described in the above embodiments.

[0132] Furthermore, the lower rack 220 comprises positioning assemblies 800 configured to hold containers, such as bottle bodies and bottle accessories (such as the anti-colic air tubes). The positioning assemblies 800 comprise first positioning assemblies 810, second positioning assemblies 820 and third positioning assemblies 830. Each of the first positioning assembly is configured to hold and position a corresponding first container 21a (i.e., a bottle body with a first-sized opening). Each of the second positioning assemblies 820 is configured to hold and position a corresponding second container 21b (i.e., a bottle with a second-sized opening). Each of the third positioning assemblies 830 is configured to hold and position bottle accessories, such as an anti-colic air tube. Each of the positioning assemblies comprises one or more components, such as an inner limiting structure that extends into a corresponding container through the opening thereof, support structures support an edge of the corresponding container to tilt the corresponding container, and an outer limiting structure positioned on an outer surface of the corresponding container to limit movement. In this way, each container is stably placed on the lower rack 220 and no water accumulation in the opening of each container, thereby facilitating drying of each container.

[0133] In one embodiment, each of the first positioning assemblies 810 is connected to at least one of the second positioning assemblies 820 and at least one of the third positioning assemblies 830. For example, each of the first positioning assemblies 810 is connected to two of the second positioning assemblies 820 and two of the third positioning assemblies 830.

[0134] In one embodiment, at least one of the second positioning assemblies 820 is connected to at least one of the first positioning assemblies 810 and at least one of the third positioning assemblies 830. For example, each of the second positioning assemblies 820 is connected to two of the first positioning assemblies 810 and two of the third positioning assemblies 830.

[0135] In one embodiment, each of the third positioning assemblies 830 is connected to a corresponding one of the first positioning assemblies 810 and / or a corresponding one of the second positioning assemblies 820. For example, each of the third positioning assemblies 830 is connected to the corresponding one of the first positioning assemblies 810 and the corresponding one of the second positioning assemblies 820.

[0136] In one embodiment, the lower rack 220 further comprises a mounting hole 224 defined in a central area of the lower rack. It should be understood that the mounting hole 224 allows the main pipe 410 to pass through. The mounting hole 224 is surrounded by a limiting ring 223. The first positioning assemblies 810 are disposed at corners of the lower rack 220, the second positioning assemblies 820 are disposed around a periphery of the mounting hole 224, and the third positioning assemblies 830 are disposed along edges of the lower rack 220.

[0137] In one embodiment, at least one of the first inclined support pieces 813 is connected to at least one of the second inclined support pieces 823.

[0138] In one embodiment, at least one of the first inclined support pieces 813 is connected to at least one of the one third inclined support pieces 833.

[0139] In one embodiment, at least one of the second inclined support pieces 823 are connected to at least one of the third inclined support pieces 833.

[0140] The lower rack 220 further comprises a pipeline 900 defining the at least one air duct 221. Specifically, the pipeline 900 is fixedly connected to the first support base 814 of each of the first positioning assemblies 810 via corresponding two first connectors 225a. The pipeline 900 is directly fixedly connected to the second support base 824 of each of the second positioning assemblies 820. Alternatively, the pipeline 900 is fixedly connected to the second support base 824 of each of the second positioning assemblies 820 via a corresponding second connector 225b. In some cases, the pipeline 900 is directly and fixedly connected to the second support base 824 via the second connector 225b.

[0141] Exemplarily, the pipeline 900 comprises a first pipeline body 910 and a second pipeline body 920. The first pipeline body 910 and a second pipeline body 920 are respectively located on two sides of the lower rack 220. A shape of the first pipeline body 910 is the same as or different from a shape of the second pipeline body 920. The first pipeline body 910 and the second pipeline body 920 jointly form a peripheral portion 900a disposed along an outer side of the lower rack 220. Namely, the pipeline 900 has the peripheral portion 900a along the lower rack 220. The first support base 814 of each of the first positioning assemblies 810 is fixedly connected to the peripheral portion 900a of the pipeline 900 via the corresponding two first connectors 225a, and the second support base 824 of each of the second positioning assemblies 820 is fixedly connected to the peripheral portion 900a of the pipeline 900 via the corresponding second connector 225b. Additionally, the first pipeline body 910 and the second pipeline body 920 jointly form a central portion 900b located in the central portion of the lower rack 220. Namely, the pipeline 900 has the central portion 900b in the central portion of the lower rack 220. The second support base 824 of each of the second positioning assemblies 820 is directly fixedly connected to the central portion 900b of the pipeline 900.

[0142] In one embodiment, the third support base 834 of each of the third positioning assemblies 830 is directly fixedly connected to the peripheral portion 900a of the pipeline 900.

[0143] In one embodiment, each first support base 814 and each first reinforcing base 815 are connected to one or more of air-guiding connecting pipes 930. For example, the one or more air-guiding connecting pipes 930 are attached to a bottom surface of each first support base 814 and a bottom surface of each first reinforcing base 815. In another example, the one or more air-guiding connecting pipes 930 are attached to the bottom and side surfaces of each first support base 814 and the bottom and side surfaces of each first reinforcing base 815. When the first container 21a is placed on one of the first positioning assemblies 810, the edge of the first container 21a may or may not place on the one or more air-guiding connecting pipes 930. The one or more air-guiding connecting pipes 930 are communicated with the pipeline 900 of the lower rack 220 and each air-guiding connecting pipe comprises an air outlet 901. When the first container 21a is placed on the one of first positioning assemblies 810, a corresponding air outlet 901 faces the opening of the first container 21a. Thus, when air flows through the pipeline 900, the air is directed into the interior of the first container 21a via the corresponding air outlet 901.

[0144] In one embodiment, the pipeline 900 is also provided with other air outlets 901, which are located at positions of the second positioning assemblies 820 and the third positioning assemblies 830. When the first container 21a or the second container 21b is placed on one of the second positioning assemblies 820, one of the other air outlets 901 faces the openings of the first container 21a or the opening of the second container 21b. When the third container 23, such as the anti-colic air tube, is placed on one of the third positioning assemblies 830, a corresponding air outlet 901 faces the opening of the third container 23.

[0145] In one embodiment, as shown in FIG. 16, there are two air ducts 221 and two inlets 222. Each inlet 222 of the lower rack 220 comprises a first inlet 222a, a second inlet 222b, and a third inlet 222c. The first inlet 222a thereof is configured to connect with the central portion 900b of the pipeline 900, the second inlet 222b thereof is configured to connect with the peripheral portion 900a of the pipeline 900, and the third inlet 222c thereof is configured to connect with the air-guiding connecting pipes 930 of the pipeline 900.

[0146] In one embodiment, as shown in FIG. 16, the lower rack 220 further comprises air guide plates 226. Each of the air guide plates 226 has an air guide channel 226a. When the lower rack 220 is mounted inside the inner container 110, each air guide channel 226a is configured to communicate with a corresponding predetermined position of the inner container 110. Specifically, the air guide plates 226 are inclined. A blocking plate is mounted below each of the air guide plates 226. Each blocking plate is configured to block air from blowing downward below the lower rack 220.

[0147] Furthermore, as shown in FIG. 15, the pipeline 900 comprises holes 902, the holes 902 are on one side opposite to the surface of the lower rack 220 configured to place the one or more containers. When a liquid enters the pipeline 900, the holes 902 allow the liquid inside the pipeline 900 to drain to the outside.

[0148] It is understandable that the container washing machine 10 comprises the positioning assemblies 800 and the lower rack 220 of the embodiments shown in FIGS. 14-23.

[0149] As shown in FIGS. 24-32, the container washing machine 10a comprises an inner container 1100, a drain component 3000, and a breather 2000. The container washing machine 10a further comprises other components such as an upper rack, a lower rack, an upper rotating spray arm, and a lower rotating spray arm, which may be referenced from the embodiments described above and are not repeatedly described above. The container washing machine 10a defines a height direction F1, which is understood as a vertical direction when a bottom portion of the container washing machine 10a is placed on a flat surface.

[0150] The inner container 1100 comprises a washing chamber 1104, a circulating water inlet hole 1101, and a drain hole 1102. The washing chamber 1104 is communicated with the circulating water inlet hole 1101 and the drain hole 1102. The inner container 1100 comprises side walls 1110 and a bottom wall 1120. The side walls 1110 are connected to a periphery of the bottom wall 1120 to define the washing chamber 1104. Furthermore, the side walls 1110 and the bottom wall 1120 together define an opening 1105 at a top portion of the inner container 1100 along the height direction F1. In other words, the opening 1105 is defined on ends of the side walls 1110 away from the bottom wall 1120. The circulating water inlet hole 1101 is defined on one of the side walls 1110; and the drain hole 1102 is defined on the bottom wall 1120.

[0151] The drain component 3000 is connected to the inner container 1100, and a water inlet 3001 of the drain component 3000 is communicated with the drain hole 1103. The inner container 1100 further comprises a mounting shell 1130 disposed below the bottom wall 1120. A power pump is mounted within the mounting shell 1130. The mounting shell 1130 is communicated with the drain hole 1102 of the inner container 1100. The drain component 3000 is connected to the mounting shell 1130, and the water inlet 3001 is communicated with the drain hole 1103 of the mounting shell 1130. The drain component 3000 and the mounting shell 1130 are connected via a first pipe body 3100, and the water inlet 3001 of the drain component 3000 and the drain hole 1103 of the mounting shell 1130 are communicated through a channel of the first pipe body 3100.

[0152] Optionally, the drain component 3000 may comprise a water pump.

[0153] The breather 2000 is connected to the drain component 3000, and a water inlet 2001 of the breather 2000 is communicated with the water outlet 3002 of the drain component 3000. Specifically, the breather 2000 and the drain component 3000 are connected via a second pipe body 3200, and the water inlet 2001 of the breather 2000 is communicated with the water outlet 3002 of the drain component 3000 through a channel of the second pipe body 3200. Further, the breather 2000 comprises a first sleeving portion 2011 defining the water inlet 2001. The second pipe body 3200 is sleeved with the first sleeving portion 201. For instance, the second pipe body 3200 is sleeved on the first sleeving portion 2011.

[0154] The breather 2000 is further connected to the inner container 1100, and a circulating water outlet 2002 of the breather 2000 is communicated with the circulating water inlet hole 1101 of the inner container 1100. For example, the breather 2000 is mounted to an outer surface of one of the side walls 1110 of the inner container 1100 via a fixing structure. The fixing structure of the breather 2000 comprises fixing plates 2600. The fixing plates 2000 comprise fixing holes 2601. Correspondingly, fixing structures 1115 are disposed on the outer surface of the one of the side walls 1110 of the inner container 1100. Fixing components, such as screws, respectively pass through the fixing holes 2601 to secure the breather to the fixing structures 1115.

[0155] For example, the breather 2000 comprises side walls 2100 and a top cover 2200. The top cover 2200 is mounted at top ends of the side walls 2100. In one optional embodiment, a connection between the top cover 2200 and the side walls 2100 satisfies that the top cover 2200 is fixedly and non-detachably attached to the top ends of the side walls 2100, which ensures that the top cover 2200 completely seals the top ends of the side walls 2100, thereby forming a sealed structure at the top ends of the side walls 2100 and preventing the washing liquid from splashing out from a connection junction between the side walls 2100 and the top cover 2200 during flow of the washing liquid inside the breather 2000. A non-detachable connection between the top cover 2200 and the side walls 2100 is achieved through a method such as integrated injection molding or welding. In another optional embodiment, the top cover 2200 is detachably connected to the side walls 2100. Namely, the top cover 2200 is allowed to be attached to the top ends of the side walls 2100 and is also allowed to be removed from the side walls 2100, which facilitates maintenance of the breather 2000 and cleaning of an interior of the breather. In the embodiment, the top cover 2200 and the top ends of the side walls 2100 are tightly connected, preventing the washing liquid inside the breather 2000 from splashing out from the connection junction thereof. A detachable connection between the top cover 2200 and the side walls 2100 is achieved through snap-fit connections or screw fastening.

[0156] Optionally, at least two of the fixing plates 2600 are disposed on the outer surfaces of the side walls 2100. For instance, two fixing plates 2600 are mounted on the one of the side walls 2100 and positioned opposite to each other. At least one of the fixing plates 2600 is disposed on the top cover 2200.

[0157] The drain component 3000 is configured to drive the washing liquid from the drain hole 1102 of the inner container 1100 to the water inlet 2001 of the breather 2000. The washing liquid inside the breather 2000 is discharged from a drain port 2003 under gravity, and the washing liquid further flows from the circulating water outlet 2002 of the breather 2000 into the circulating water inlet hole 1101 of the inner container 1100, thereby entering the washing chamber 1104 of the inner container 1100. Compared to the prior art where a drain hose is applied for discharge, when the drain hose malfunctions due to improper placement or blockage, preventing normal discharge of the washing liquid from the container washing machine, excessive pressure in the drain hose may cause explosion or leakage problems. Therefore, in the embodiment, the washing liquid inside the breather 2000 is further allowed to enter the circulating water inlet hole 1101 via the circulating water outlet 2002 and flow into the washing chamber 1104, thereby forming a circulatory flow of the washing liquid. Therefore, it prevents pressure buildup in the entire system of the container washing machine 10a that could cause rupture or leakage at pipe connection points, effectively solving the problem in the prior art. Furthermore, the container washing machine 10a in the embodiment does not siphon during a washing process, preventing all the washing liquid from overflowing from the drain port 2003 of the breather 2000. Furthermore, when a water inlet control of the container washing machine 10a is abnormal, excess water is discharged without affecting a normal operation of the entire system of the container washing machine 10a.

[0158] Furthermore, the top cover 2200 and the side walls 2100 of the breather 2000 define an accommodating chamber 2004. The accommodating chamber 2004 is configured to store the washing liquid. In other optional embodiments, the breather 2000 further comprises a bottom wall 2300 connected to bottom ends of the side walls 2100. The top cover 2200, the side walls 2100, and the bottom wall 2300 jointly define the accommodating chamber 2004. The water inlet 2001 is disposed on one of the side walls 2100; the circulating water outlet 2002 is disposed on another one of the side walls 2100. Specifically, the water inlet 2001 and the circulating water outlet 2002 are disposed on different side walls 2100. The drain port 2003 of the breather 2000 is disposed on the bottom wall 2300.

[0159] In one embodiment, the container washing machine 10a further comprises a third pipe body 3300. The third pipe body 3300 is connected to the bottom wall 2300 of the breather 2000, and the third pipe body 3300 is communicated with the drain port 2003 of the breather 2000. Further, the breather 2000 further comprises a second sleeving portion 2033 disposed around the drain port 2003. The second sleeving portion 2033 is sleeved with the third pipe body 3300. For example, the third pipe body 3300 is sleeved on the second sleeving portion 2033. One end of the third pipe body 3300 away from the breather 2000 has a drainage outlet 3301. The drainage outlet is configured to discharge the washing liquid from inside the breather 2000 to the outside of the container washing machine 10a. Compared to the prior art, even if the third pipe body 3300 is blocked or improperly placed and unable to discharge the washing liquid, the washing liquid inside the breather 2000 is allowed to enter the circulating water inlet hole 1101 via the circulating water outlet 2002 and flow into the washing chamber 1104, thereby forming the circulatory flow of washing liquid. In this way, it prevents excessive pressure buildup inside the third pipe body 3300 that could lead to explosion or leakage.

[0160] To illustrate, as shown by a dashed arrow in FIG. 28, a flow direction demonstrates how the breather 2000 and the inner container 1100 achieve internal circulation of washing liquid. The washing liquid in the inner container 1100 is driven by the drain component 3000 from the drain hole 1102 along a first flow direction a to the water inlet 2001 of the breather 2000. When the third pipe body 3300 is functioning normally for drainage, the washing liquid entering the breather 2000 along the first flow direction a flows under gravity along a third flow direction c to the drainage outlet 3301 and is discharged to the outside of the container washing machine 10a. In cases where the third pipe body 3300 functions abnormally, the washing liquid entering the breather 2000 along the first flow direction a gradually accumulates until the washing liquid reaches a level of the circulating water outlet 2002. At this point, the washing liquid inside the breather 2000 flows along a second flow direction b to the circulating water outlet 2002 and the circulating water inlet hole 1101, and re-enters the inner container 1100, thereby achieving circulation.

[0161] For instance, as shown in FIGS. 29 and 30, and in conjunction with other drawings, the water inlet 2001 of the breather 2000 is below the circulating water inlet hole 1101 in the height direction F1. For example, a position of the water inlet 2001 in the height direction F1 is defined as h1. h1 is below both the circulating water inlet hole 1101 and the circulating water outlet 2002. Therefore, when the third pipe body 3300 functions normally, the washing liquid entering the breather 2000 from the water inlet 2001 is discharged via the third pipe body 3300 to the outside of the container washing machine 10a. Similarly, the water inlet 2001 of the breather 2000 is above a maximum fill level for washing liquid in the washing chamber 1104 in the height direction F1. For instance, the maximum fill level for washing liquid in the washing chamber 1104 is defined as h4. h4 is below h1. In this way, it ensures that the washing liquid inside the breather 2000 does not accidentally flow out of the container washing machine 10a, thereby maintaining an adequate amount of washing liquid in the washing chamber 1104.

[0162] In one embodiment, the container washing machine 10a further comprises an upper cover 130. The upper cover 130 covers or exposes the opening 1105 of the inner container 1100. The washing chamber 1104 of the container washing machine 10a is communicated with external air via the opening 1105 and exhaust holes 1301, ensuring that an air pressure inside the washing chamber 1104 matches an external atmospheric pressure. Moreover, when the circulating water outlet 2002 of the breather 2000 is communicated with the circulating water inlet hole 1101, the air pressure inside the accommodating chamber 2004 of the breather 2000 remains consistent with the air pressure in the washing chamber 1104. Thus, the air pressure of the breather 2000 and the air pressure of the inner container 1100 are balanced, ensuring that a pressure generated by the drain component 3000 when driving the washing liquid into the breather 2000 is rapidly relieved, which prevents damage or performance degradation of components in the container washing machine 10a due to pressure accumulation.

[0163] In one embodiment, the container washing machine 10a further comprises at least one blocking structure. The at least one blocking structure is disposed on the breather 2000 and / or the inner container 1100, and is configured to prevent the washing liquid from the inner container 1100 from entering the breather 2000 through the circulating water inlet hole 1101 of the inner container 1100 and the circulating water outlet 2002. In one optional embodiment, the at least one blocking structure comprises a first blocking structure 2400 and a second blocking structure 1114. The first blocking structure 240 is disposed on the breather 2000. The first blocking structure 2400 extends upward in the height direction F1 from below the circulating water outlet 2002 of the breather 2000 to partially cover the circulating water outlet 2002. The second blocking structure 1114 is disposed on the inner container 1100. The second blocking structure 1114 extends downward in the height direction F1 from above the circulating water inlet hole 1101 of the inner container 1100 to partially cover the circulating water inlet hole 1101. A free end of the first blocking structure 2400 is above a free end of the second blocking structure 1114 in the height direction F1, which allows the first blocking structure 2400 and the second blocking structure 1114 to jointly prevent the washing liquid in the inner container 1100 from entering the breather 2000 through the circulating water inlet hole 1101 of the inner container 1100 and the circulating water outlet 2002. Specifically, the position of the free end of the first blocking structure 2400 in the height direction F1 is defined as h3, and the position of the free end of the second blocking structure 1114 in the height direction F1 is defined as h2. h3 is located above h2. Namely, a projection of the first blocking structure 2400 on the second blocking structure 1114 partially overlaps second blocking structure 1114, or a projection of the second blocking structure 1114 on the first blocking structure 2400 partially overlaps the first blocking structure 2400. Therefore, the washing liquid is prevented from splashing from the inner container 1100 into the breather 2000. In other optional embodiments, the free end of the first blocking structure 2400 and the free end of the second blocking structure 1114 are flush.

[0164] In another optional embodiment, the at least one blocking structure comprises only the first blocking structure 2400, and no second blocking structure 1114 is provided. In yet another optional embodiment, the at least one blocking structure comprises only the second blocking structure 1114, and no first blocking structure 2400 is provided. These configurations may, to a certain extent, prevent the washing liquid from splashing from the inner container 1100 into the breather 2000.

[0165] In one embodiment, the first blocking structure 2400 is partially disposed in the circulating water outlet 2002. Similarly, the second blocking structure 1114 is at least partially disposed in the circulating water inlet hole 1101. For instance, the second blocking structure 1114 is completely disposed within the circulating water inlet hole 1101.

[0166] In one embodiment, at least a portion of the first blocking structure 2400 is a semi-circular structure. The second blocking structure 1114 is a semi-circular structure.

[0167] In one embodiment, the first blocking structure 2400 comprises a blocking body 2410 disposed inside the circulating water outlet 2002 and a return plate 2420. The return plate 2420 is connected to the blocking body 2410 and is inclined. A first end of the return plate 2420 closer to the inner container 1100 is located below a second end away from the inner container 1100 in the height direction F1, which ensures that the washing liquid from the inner container 1100 that enters the circulating water outlet 2002 is blocked by the first blocking structure 2400 and flows back through the return plate 2420 into the circulating water inlet hole 1101 of the inner container 1100.

[0168] In one embodiment, the breather 2000 comprises a first connecting structure 2500 disposed around a circumference of the circulating water outlet 2002. The inner container 1100 comprises a second connecting structure disposed around a circumference of the circulating water inlet hole 1101. The first connecting structure 2500 is connected to the second connecting structure.

[0169] In one optional embodiment, a connection method between the first connecting structure 2500 and the second connecting structure is as follows. The second connecting structure comprises a first connecting raised ring 1111 and a second connecting raised ring 1112. The second connecting raised ring 1112 surrounds the first connecting raised ring 1111 to form an annular groove 1113. The first connecting structure 2500 is disposed in the annular groove 1113 so that inner and outer sides of the first connecting structure 2500 are limited by the first connecting raised ring 1111 and the second connecting raised ring 1112. In another optional embodiment, the first connecting structure 2500 is sleeved with the second connecting structure. For instance, the second connecting structure may only comprise the first connecting raised ring 1111 and not comprise the second connecting raised ring 1112. In yet another optional embodiment, one of the first connecting structure 2500 and the second connecting structure is a connecting groove, and the other is a connecting raised ring. The connecting raised ring is disposed in the connecting groove.

[0170] As shown in FIG. 33, the container washing machine 10a further comprises an electrical control device 4000. The electrical control device 4000 is electrically connected to the drain component 3000. When powered on, the electrical control device 4000 is configured to control the drain component 3000. For example, under the control of the electrical control device 4000, the drain component 3000 drives the washing liquid from the drain hole 1102 of the inner container 1100 to the water inlet 2001 of the breather 2000, and subsequently into the breather 2000. The electrical control device 4000 may be referred to as the electrical control device 710.

[0171] The lower rotating spray arm 320 is not limited to the structure shown in FIG. 8. As shown in FIGS. 24-42, a lower rotating spray arm 320b is applied to a container washing machine 10b. It is understood that the container washing machine 10b comprises the lower rotating spray arm 320b. The container washing machine 10b comprises a main pipe 410b and a lower rack 220b. The lower rotating spray arm 320b is connected to and communicated with the main pipe 410b. The lower rotating spray arm 320b is capable of rotating around the main pipe 410b. The lower rack 220b is configured to hold the one or more containers, such as the one or more baby bottles. Along a length direction of the main pipe 410b, the lower rotating spray arm 320b is disposed below the lower rack 220b. The lower rotating spray arm 320b is configured to spray the washing liquid to wash the one or more containers (e.g., the one or more bottles placed on the lower rack 220b). Other components of the container washing machine 10b, such as the upper rack and upper rotating spray arm, may be referenced from the above embodiments and are repeatedly described herein.

[0172] The lower rotating spray arm 320b comprises a rotating portion 3210 and at least three spray arm bodies 3220. The rotating portion 3210 is fixedly connected to the at least three spray arm bodies 3220. For example, the rotating portion 3210 and the at least three spray arm bodies 3220 are integrally formed. The at least three spray arm bodies 3220 are spaced apart around a periphery of the rotating portion 3210 and are communicated with the rotating portion 3210. In other words, the at least three spray arm bodies 3220 are connected to the outer peripheral side of the rotating portion 3210. In one optional embodiment, the at least three spray arm bodies 3220 are equally spaced around the periphery of the rotating portion 3210. When the lower rotating spray arm 320b comprises three spray arm bodies 3220, an angle formed between each two adjacent spray arm bodies is 120 degrees. The present disclosure takes an example that the at least three spray arm bodies 3220 comprise three spray arm bodies 3220 for further illustration. It is understood that the number of the at least three spray arm bodies 3220 may be four, five, or another number in other embodiments, which is not limited thereto.

[0173] The rotating portion 3210 is capable of rotating around the main pipe 410b of the container washing machine 10b. Specifically, the lower rotating spray arm 320b comprises a through hole 3230. The through hole 3230 allows the main pipe 410b to pass through, enabling the rotating portion 3210 to be sleeved on an outer side of the main pipe 410b. The lower rotating spray arm 320b further comprises connecting structures 3250. The connecting structures 3250 are connected to the rotating portion 3210 and are integrally formed with the rotating portion 3210. After the rotating portion 3210 is sleeved on the main pipe 410b, the connecting structures 3250 are connected to a corresponding structure on the main pipe 410b, such as a protruding ring. The lower rotating spray arm 320b is rotatable around the main pipe 410b. An interior of the rotating portion 3210 is hollow, allowing the through hole 3230 to communicate with channels 3240 of the three spray arm bodies 3220 via the rotating portion 3210. The through hole 3230 is further communicated with an internal channel of the main pipe 410b. The main pipe 410b is configured to convey the washing liquid into the lower rotating spray arm 320b.

[0174] In one embodiment, each of the spray arm bodies 3220 comprises at least two spray hole groups (A11 and B11; or A12 and B12; or A13 and B13). Each of the spray hole groups (A11, B11, A12, B12, A13, B13) comprises spray holes 3201. In at least one of the spray hole groups, spraying directions of at least two of the spray holes 3201 are different., which ensures that during the spraying of the washing liquid by the at least two of the spray holes 3201 in the at least one of the spray hole groups, the washing liquid is sprayed in different directions, achieving multi-directional water jets and enhancing a cleaning effect. An innermost spray hole 3201 (closest to the rotating portion 3210) in each of the spray hole groups (A11, B11, A12, B12, A13, B13) has an outward-tilted angle. In one optional embodiment, for any one of the at least three spray arm bodies, the at least two spray hole groups are at different distances from the rotating portion 3210,. The spray holes 3201 of any one of the at least two spray hole groups are at different distances from the rotating portion 3210.

[0175] In any one of the spray hole groups, a spraying direction of a spray hole 3201 thereof closest to the rotating portion 3210 is tilted toward a direction away from the rotating portion 3210, which enhances the cleaning effect of an interior of the one or more containers that are in the inclined state.

[0176] In any one of the spray hole groups, the spraying directions of all spray holes 3201 are different from each other, which ensures that the directions of the water jets produced by all spray holes 3201 in any one of the spray hole groups during the spraying of washing liquid are all different. For instance, spraying directions of all spray holes are different from each other, meaning that all spray holes 3201 on the lower rotating spray arm 320b produce water jets in different directions during the spraying of washing liquid. For instance, the spray holes are able to produce 9 or 18 water jets in 9 or 18 directions to provide a sufficient cleaning range for the one or more containers during the rotation of the lower rotating spray arm 320b.

[0177] In one embodiment, the at least two spray hole groups on each of the spray arm bodies 3220 are disposed along a length direction F4. In any one of the spray hole groups, the spray holes 3201 thereof are also disposed along the length direction F4 of their respective spray arm body 3220. In one arrangement, the spray holes 3201 in any one of the spray hole groups are staggered along the length direction F4 of their respective spray arm body 3220. Staggered arrangement is understood as distances between the spray holes 3201 in any one of the spray hole groups and am side edge of their respective spray arm body 3220 are different.

[0178] In one embodiment, the three spray arm bodies 3220 comprise a first spray arm body 3221, a second spray arm body 3222, and a third spray arm body 3223. The first spray arm body 3221 comprises a first spray hole group A11 close to the rotating portion 3210 and a second spray hole group B11 away from the rotating portion 3210. The second spray arm body 3222 comprises a third spray hole group A12, close to the rotating portion 3210 and a fourth spray hole group B12 away from the rotating portion 3210. The third spray arm body 3223 comprises a fifth spray hole group A13, close to the rotating portion 3210 and a sixth spray hole group B13 away from the rotating portion 3210.

[0179] Specifically, the first spray hole group A11 is disposed on a first position P1 of the first spray arm body 3221; the third spray hole group A12 is disposed on a third position P3 of the second spray arm body 3222; and the fifth spray hole group A13 is disposed on a fifth position P5 of the third spray arm body 3223. The first position P1, the third position P3, and the fifth position P5 are disposed around the rotating portion 3210. The first position P1, the third position P3, and the fifth position P5 are at the same distance from the rotating portion 3210. In other words, it is understood that the first position P1, the third position P3, and the fifth position P5 jointly define a first circle R1 around the rotating portion 3210. The second spray hole group B11 is disposed on a second position P2 of the first spray arm body 3221; the fourth spray hole group B12 is disposed on a fourth position P4 of the second spray arm body 3222; and the sixth spray hole group B13 is disposed on a sixth position P6 of the third spray arm body 3223. The second position P2, the fourth position P4, and the sixth position P6 are disposed around the rotating portion 3210. The second position P2, the fourth position P4, and the sixth position P6 are at the same distance from the rotating portion 3210. In other words, it is understood that the second position P2, the fourth position P4, and the sixth position P6 together define a second circle R2 around the rotating portion 3210. The second circle R2 is spaced apart from and surrounds the first circle R1.

[0180] All spray holes 3201 of the lower rotating spray arm 320b are disposed toward the lower rack 220b. When spraying the washing liquid, all spray holes 3201 of the lower rotating spray arm 320b act on all of the one or more containers placed on the lower rack 220b, such as the first bottle 21A and the second bottle 21B, to clean them. In one optional embodiment, coverage areas of the spray holes 3201 align with openings of the containers, such as the first bottle and the second bottle, ensuring that the water jets (cleaning columns) produced by the spray holes 3201 enter the first bottle and the second bottle.

[0181] The spray holes 3201 in the first spray hole group A11, the spray holes 3201 in the third spray hole group A12, and the spray holes 3201 in the fifth spray hole group A13 are all oriented toward seventh positions P7 on the lower rack 220b. The spray holes 3201 in the second spray hole group B11, the spray holes 3201 in the fourth spray hole group B12, and the spray holes 3201 in the sixth spray hole group B13 are all oriented towards eighth positions P8 on the lower rack 220b. The seventh positions P7 and the eighth positions P8 are different.

[0182] When all spray holes of the lower rotating spray arm 320b spray the washing liquid, the water jets ejected from the spray holes 3201 in the first spray hole group A11, the spray holes 3201 in the third spray hole group A12, and the spray holes 3201 in the fifth spray hole group A13 act on the seventh positions P7 on the lower rack 220b. The water jets ejected from the spray holes 3201 in the second spray hole group B11, the spray holes 3201 in the fourth spray hole group B12, and the spray holes 3201 in the sixth spray hole group B13 act on the eighth positions P8 on the lower rack 220b.

[0183] In one scenario, the eighth positions P8 are located at corners of the lower rack 220b. For example, when the lower rack 220b comprises four corners, there are four eighth positions P8. Each of the eighth positions P8 is able to support and position one container, such as one second bottle 21B. Each of the seventh positions P7 is located between corresponding two adjacent eighth positions P8. For example, the lower rack 220b comprises four seventh positions P7. Each of the seventh positions P7 is able to support and position one container, such as one first bottle 21A. Thus, during the rotation of the lower rotating spray arm 320b, when all spray holes spray the washing liquid, the washing liquid from the spray holes in the first spray hole group A11, the spray holes in the third spray hole group A12, and the spray holes in the fifth spray hole group A13 acts on multiple (e.g., four) first bottles 21A to clean the first bottles. The washing liquid from the spray holes in the second spray hole group B11, the spray holes in the fourth spray hole group B12, and the spray holes in the sixth spray hole group B13 acts on multiple (e.g., four) second bottles 21B to clean the second bottles.

[0184] As shown in FIG. 41, the washing liquid sprayed from the spray holes 3201 in the first spray hole group A11, or the washing liquid sprayed from the spray holes 3201 in the third spray hole group A12, or the washing liquid sprayed from the spray holes 3201 in the fifth spray hole group A13 produces first water columns A01. The first water columns A01 thereof are capable of entering a corresponding first bottle 21A from its opening. As shown in FIG. 42, the washing liquid sprayed from the spray holes 3201 in the second spray hole group B11, or the washing liquid sprayed from the spray holes 3201 in the fourth spray hole group B12, or the washing liquid sprayed from the spray holes 3201 in the sixth spray hole group B13 is able to produce second water columns B01. The second columns B01 are capable of entering a corresponding second bottle 21B through its opening.

[0185] It is understandable that during the rotation of the lower rotating spray arm 320b, when all the spray holes spray the washing liquid, the washing liquid sprayed from the spray holes 3201 in the first spray hole group A11, the washing liquid sprayed from the spray holes 3201 in the third spray hole group A12, and the washing liquid sprayed from the spray holes 3201 in the fifth spray hole group A13 are confined within the first circle R1. The washing liquid sprayed from the spray holes 3201 in the second spray hole group B11, the washing liquid sprayed from the spray holes 3201 in the fourth spray hole group B12, and the washing liquid sprayed from the spray holes 3201 in the sixth spray hole group B13 is confined within the second circle R2.

[0186] In one embodiment, an arrangement of the spray holes 3201 in the first spray hole group A11, an arrangement of the spray holes 3201 in the third spray hole group A12, and an arrangement of the spray holes 3201 in the fifth spray hole group A13 are the same. For example, a positional arrangement of the spray holes 3201 in the first spray hole A11, a positional arrangement of the spray holes 3201 in the third spray hole group A12, and a positional arrangement of the spray holes 3201 in the fifth spray hole group A13 are the same. In other optional embodiments, the arrangement of the spray holes 3201 in the first spray hole group A11, the arrangement of the spray holes 3201 in the third spray hole group A12, and the arrangement of the spray holes 3201 in the fifth spray hole group A13 may also be different.

[0187] In one embodiment, an arrangement of the spray holes 3201 in the second spray hole group B11, an arrangement of the spray holes 3201 in the fourth spray hole group B12, and an arrangement of the spray holes 3201 in the sixth spray hole group B13 are the same. For instance, a positional arrangement of the spray holes 3201 in the second spray hole group B11, a positional arrangement of the spray holes 3201 in the fourth spray hole group B12, and a positional arrangement of the spray holes 3201 in the sixth spray hole group B13 are the same. In other optional embodiments, the arrangement of the spray holes 3201 in the second spray hole group B11, the arrangement of the spray holes 3201 in the fourth spray hole group B12, and the arrangement of the spray holes 3201 in the sixth spray hole group B13 may also be different.

[0188] In one embodiment, at least one power hole 3202 is disposed on a lower side of each of the spray arm bodies 3220 to generate rotational torque. Each power hole 3202 is disposed at an angle relative to a central axis L11 of the lower rotating spray arm 320b. During the spraying of the washing liquid from each power hole 3202, a reactive force drives a corresponding one of the spray arm bodies 3220 to rotate. A spraying direction of the washing liquid from each power hole 3202 is opposite to a rotation direction of the corresponding one of the spray arm bodies 3220.

[0189] As shown in FIGS. 43-56, the upper rack 210c is configured to hold one or more containers, such as one or more containers 20c shown in FIG. 56. Each container 20 is a part of a baby bottle, such as a nipple. The upper rack 210c is applied in a container washing machine 10c. The container washing machine 10c further comprises an upper cover 130c. The upper cover 130c is detachably connected to the upper rack 210c, so that the upper cover is allowed to cover the upper rack 210c and is allowed to be removed from the upper rack. The upper cover 130c is able to cover both the upper rack 210c and the one or more containers 20c placed on the upper rack. Other components of the container washing machine 10c may be referenced from the above embodiments and are not repeatedly described herein.

[0190] The upper rack 210c comprises a rack body 211c and a support component 212c. The support component 212c is detachably connected to the rack body 211c. That is, the support component 212c is capable of being mounted on the rack body 211c and being detached from the rack body 211c. When the support component 212c is mounted on the rack body 211c, both the support component 212c and the rack body 211c are able to hold the containers 20c. When the support component 212c and the rack body 211c are separated, the rack body 211c is allowed to be used independently to hold the containers. In practical applications, the user may choose to use the rack body 211c separately or with the support component 212c based on their needs. Therefore, the upper rack 210c in the embodiment achieves different configurations, fulfilling a purpose of multi-form design and meeting the user's diverse application requirements.

[0191] The rack body 211c comprises a receiving portion 2110 configured to hold the containers 20c and a mounting portion 2120. The mounting portion 2120 is surrounded by the receiving portion 2110. That is, the receiving portion 2110 is disposed around the mounting portion 2120. The mounting portion 2120 is configured to install the support component 212c. The support component 212 is detachably mounted on the mounting portion 2120. That is, the support component 212c is allowed to be mounted on and removed from the mounting portion. Specifically, the mounting portion 2120 comprises a mounting plate 2121 and a mounting ring 2126. The mounting ring 2126 is annular and is connected to the edge of the mounting plate 2121, so as to define a mounting groove 2123. An opening of the mounting groove 2123 faces a placement surface of the rack body 211c. The mounting groove 2123 is configured to accommodate a part of the support component 212c. Both an upper surface and a lower surface of the mounting plate 2121 are parallel to a X-Y plane. The upper surface of the mounting plate 2121 and the placement surface of the receiving portion 2110 are on the same side of the rack body 211c.

[0192] The rack body 211c comprises first mounting structures 2122 disposed on the mounting portion 2120. In a first case, the first mounting structures 2122 are disposed on the upper surface of the mounting plate 2121. In a second case, the first mounting structures 2122 are disposed on the lower surface of the mounting plate 2121. In a third case, the first mounting structures 2122 are disposed on an inner surface of the mounting ring 2126. The inner surface of the mounting ring 2126 is one side where the mounting ring 2126 is connected to the mounting plate 2121, and an outer surface of the mounting ring 2126 is connected to the receiving portion 2110. The present disclosure takes an example that the first mounting structures 2122 are disposed on the lower surface of the mounting plate 2121 for further illustration. The mounting portion 2120 further comprises connecting holes 2124 penetrating the mounting plate 2121. The connecting holes 2124 are formed on the connection plate 2121 or at a junction between the mounting plate 2121 and the mounting ring 2126. Each of the first mounting structures 2122 is close to a corresponding one of the connecting holes 2124. The mounting portion 2120 further comprises recesses 2125 formed on the mounting plate 2121. The recesses 2125 are one-to-one connected to the connecting holes 2124, and each of the recesses 2125 is adjacent to a corresponding one of the first mounting structures 2122.

[0193] In one embodiment, the first mounting structures 2122 are evenly spaced on the mounting plate 2121, the connecting holes 2124 are evenly spaced, and the recesses 2125 are evenly spaced on the mounting plate 2121.

[0194] Exemplarily, the support component 212c comprises a loading structure 2160, second mounting structures 2170, and support structures 2150. The second mounting structures 2170 are disposed on a lower surface 2162 of the loading structure 2160. The second mounting structures 2170 are detachably connected to the first mounting structures 2122. The support structures 2150 are spaced apart on an upper surface 2161 of the loading structure 2160, and each of the support structures 2150 is inclined relative to the loading structure 2160.

[0195] A connection method between the first mounting structures 2122 and the second mounting structures 2170 comprises one of a snap-fit connection, a threaded connection, and a magnetic connection. Specifically, the first mounting structures 2122 are one-to-one detachably connected to the second mounting structures 2170. The present disclosure takes an example that the first mounting structures are snapped with the second mounting structures for further illustration.

[0196] A connecting process of the first mounting structures 2122 and the second mounting structures 2170 is as follows.

[0197] First, the loading structure 2160 is aligned with the mounting groove 2123, and the second mounting structure 2170 is aligned with the connecting holes 2124 and the recesses 2125.

[0198] Then, the second mounting structures 2170 are one-to-one inserted into the connecting holes 2124 and the recesses 2125. A force is applied to drive a part of each of the second mounting structures 2170 from the upper surface of the mounting plate 2121 to an outer side of the lower surface of the mounting plate, so that the second mounting structures 2170 are connected with the first mounting structures 2122.

[0199] The loading structure 2160 is placed in the mounting groove 2123. The lower surface 2162 of the loading structure 2160 is fully attached to the upper surface of the mounting plate 2121 and is completely surrounded by the mounting ring 2126.

[0200] In one embodiment, the number of the first mounting structures 2122 and the number of the second mounting structures 2170 may be the same or different. For instance, there are four first mounting structures 2122 and two second mounting structures 2170. The two second mounting structures 2170 are positioned opposite to each other and are detachably connected to corresponding two of the four first mounting structures 2122.

[0201] In one embodiment, the support component 212c further comprises at least one limiting structure 2180. Taking two limiting structures 2180 as an example, the two limiting structures 2180 are opposite to each other and are disposed on the lower surface 2162 of the loading structure 2160. The two limiting structures 2180 are configured to be placed into two opposite connecting holes 2124 and two opposite recesses 2125. The two limiting structures 2180 increase the connection stability of the first mounting structures 2122 and the second mounting structures 2170, while also facilitating the disassembly of the first mounting structures 2122 and the second mounting structures 2170.

[0202] Each of the support structures 2150 comprises: a first support segment 2151, a second support segment 2152, and a third support segment 2153. Taking one of the support structures as an example, the first support segment 2151, the second support segment 2152, and the third support segment 2153 are connected in sequence. One end of the first support segment 2151, away from the second support segment 2152, is connected to the loading structure 2160. The first support segment 2151 and the second support segment 2152 are bending, and the second support segment 2152 and the third support segment 2153 are also bending. The third support segment 2153 is inclined relative to the loading structure 2160. At least a portion of the third support segment 2153 is disposed above the receiving portion 2110. Further, the first support segment 2151 is perpendicular to the loading structure 2160, the second support segment 2152 is parallel to the loading structure 2160, and the third support segment 2153 is perpendicular to the loading structure 2160.

[0203] Furthermore, a distance L between an inner top surface 131c of the upper cover 130c and one end of the third support segment 2153 away from the second support segment 2152 is less than a predetermined value, which ensures that when one of the containers 20c is placed on the third support segment 2152, the one of the containers 20 does not contact the inner top surface 131c of the upper cover 130c and does not fall off the third support segment 2153. Further, such a configuration ensures that when the one of the containers 20c is placed on one of the support structures 2150, the one of the containers 20c is inclined relative to the horizontal plane, making it less likely for the washing liquid to remain inside the one of the containers 20c after washing. Furthermore, when one nipple hangs on the third support segment 2153, the nipple is prevented from detaching from the third support segment 2153 when shaking.

[0204] Furthermore, at least a portion of the receiving portion 2110 configured to hold containers 20c are inclined relative to the horizontal plane. In this way, it ensures that when the containers 20c are placed on the receiving portion 2110, the containers 20c are inclined relative to the horizontal plane. The horizontal plane is understood as the X-Y plane shown in FIGS. 38 and 40. An X-axis, a Y-axis, and a Z-axis define a three-dimensional coordinate system. Within the three-dimensional coordinate system, the X-axis and Y-axis define the X-Y plane, and the Z-axis is perpendicular to the X-Y plane. In the embodiment, the containers 20c are placed in an inclined state, making it less likely for the washing liquid to remain after cleaning. In this way, the containers 20c are allowed to remain tilted when being placed freely on the placement part 2110, preventing water accumulation in gaps and grooves and facilitating drying.

[0205] The receiving portion 2110 comprises a first receiving section 2111 and a second receiving section 2112. The first receiving section 2111 is disposed around a periphery of the second receiving section 2112, and the second receiving section 2112 is disposed around a periphery of the mounting portion 2120. The first receiving section 2111 comprises a first inclined structure 21111 and first through holes 21112 defined by the first inclined structure 21111, thereby forming a grid structure. In the embodiment, the first inclined structure 21111 is inclined relative to the X-Y plane, causing the containers 20c placed on the first inclined structure 21111 to be inclined relative to the X-Y plane. The second receiving section 2112 comprises a second inclined structure 21121 and second through holes 21122 defined by the second inclined structure 21121, thereby forming a grid structure. In the embodiment, the second inclined structure 21121 is inclined relative to the X-Y plane, causing the containers placed thereon to be inclined relative to the X-Y plane. Both the first inclined structure 21111 and the second inclined structure 21121 are inclined relative to the X-Y plane. Inclination degrees of the second inclined structure 21121 and the first inclined structure 21111 relative to the X-Y plane may be the same or different.

[0206] Furthermore, the upper rack 210c has a first direction F1. The first direction F1 is perpendicular to the horizontal plane. The first direction F1 is understood as the Z-axis of the three-dimensional coordinate system, perpendicular to the X-Y plane. The first direction F1 shown in FIG. 42 is equivalent to the height direction F1 of the container washing machine 10 shown in FIG. 1.

[0207] Furthermore, a highest point h1 of the first receiving section 2111 is higher than a highest point h3 of the second receiving section 2112 along the first direction F1. A lowest point h2 of the first receiving section 2111 is lower than a lowest point h4 of the second receiving section 2112 in the first direction F1. The highest point h1 of the first receiving section 2111 is connected to the lowest point h4 of the second receiving section 2112.

[0208] Furthermore, an area of the first receiving section 2111 is greater than an area of the second receiving section 2112. In the embodiment, containers with a smaller size may be placed on the second receiving section 2112, while containers with a larger size may be placed on the first receiving section 2111. For example, the first receiving section 2111 is configured to hold items such as nipples or screw caps.

[0209] In one embodiment, the rack body 211c further comprises first support rods 21113 disposed on a placement surface of the first inclined structure 21111. The first support rods 21113 are higher than the highest point h1 of the first receiving section 2111 in the first direction F1. Each of the first support rods 21113 is configured to support a container part, such as the nipple.

[0210] In one embodiment, the rack body 211c further comprises second support rods 21123 disposed on the placement surface of the second inclined structure 21121. The second support rods 21123 are higher than the highest point h3 of the second receiving section 2112 in the first direction F1. Each of the second support rods 21123 is configured to support bottle accessories such as duckbill valves for breast pumps or anti-colic silicone parts of baby bottles.

[0211] In one embodiment, the first receiving section 2111 further comprises positioning rings 21114 connected to the first inclined structure 21111. The positioning rings 21114 are located at the highest point h1 of the first receiving section 2111 in the first direction F1 and are disposed separately. Each of the positioning rings 21114 defines a positioning hole 21115, which is configured to hold an item, such as an anti-colic silicone part.

[0212] In the embodiment, hook structures (the support structures 2150) and ribs (first support rods 21113 and / or the second support rods 21123) are configured to position the container accessories, such as the nipples and other infant product parts. These configurations are configured to limit displacement of the container accessories caused by water flow during the washing process. Positions of the container accessories are limited to specific areas, thereby enhancing the cleaning effect. The hook structures (the support structures 2150) ensure that the nipples remain tilted and free to sway, significantly facilitating drainage of the washing liquid during cleaning and reducing water droplets adhering to walls of the nipples. A structure of the upper rack accelerates drying efficiency after washing and reduces water stains on the nipples.

[0213] In the embodiment, the rack body 211c comprises a through hole 2127, and the support component 212c comprises a through hole 2190. When the support component 212c is mounted on the rack body 211c, the through hole 2127 of the rack body 211c is communicated with the through hole 2190 of the support component 212c. Both the through hole 2127 of the rack body 211c and the through hole 2190 of the support component 212c are configured for passing through the main pipe of the container washing machine 10c.

Examples

Embodiment Construction

[0072]As shown in FIGS. 1-3D, a container washing machine 10 of the present disclosure defines a height direction F1 and a width direction F2. The height direction F1 and the width direction F2 are approximately perpendicular to each other. In some cases, the width direction F2 is understood as a length direction of the container washing machine 10.

[0073]The container washing machine 10 comprises an inner container 110, an upper rack 210, a main pipe 410, a lower rack 220, an upper rotating spray arm 310, and a lower rotating spray arm 320. The upper rack 210 is detachably mounted on the inner container 110. At least a portion of the upper rack 210 is placed into a washing chamber 112 through an opening 114 of the inner container 110, and the upper rack 210 is allowed to be removed from the inner container 110 through the opening 114.

[0074]Compared to the prior art where nozzles and an upper rack are directly fixed and non-detachable, the embodiment facilitates cleaning and maintena...

Claims

1. A container washing machine, comprising:an inner container;an upper rack;a main pipe;a lower rack;an upper rotating spray arm; anda lower rotating spray arm;wherein the container washing machine defines a height direction, the inner container comprises a washing chamber and an opening, the upper rack is detachably mounted on the inner container, and the lower rack is disposed in the washing chamber;wherein at least a portion of the upper rack is capable of being placed in the washing chamber from the opening of the washing chamber, and the upper rack is capable of being taken out of the inner container from the opening of the washing chamber;wherein the upper rotating spray arm is connected to and communicated with the main pipe, and the upper rotating spray arm is rotatable around the main pipe;wherein the lower rotating spray arm is connected to and communicated with the main pipe, and the lower rotating spray arm is rotatable around the main pipe;wherein when the upper rack is mounted on the inner container, the upper rack, the upper rotating spray arm, the lower rack, and the lower rotating spray arm are sequentially disposed in the height direction from top to bottom, with the upper rack and the upper rotating spray arm being separately disposed.

2. The container washing machine according to claim 1, wherein the upper rotating spray arm and the main pipe are detachably connected or non-detachably connected;wherein when the upper rotating spray arm and the main pipe are detachably connected, a detachable connection between the upper rotating spray arm and the main pipe comprises:(1) at least one first fastener is disposed on one of the upper rotating spray arm and the main pipe, a second fastener is disposed on the other one of the upper rotating spray arm and the main pipe, and the at least one first fastener and the second fastener are detachably connected, so that the upper rotating spray arm and the main pipe are detachably connected; or(2) the upper rotating spray arm is detachably connected to a connecting pipe, the upper rotating spray arm is rotatable around the connecting pipe and the main pipe, and the connecting pipe is connected to the main pipe through a snap-fit connection, screws, an adhesive connection, or welding;wherein when the upper rotating spray arm and the main pipe are non-detachably connected, a non-detachable connection between the upper rotating spray arm and the main pipe comprises:at least one groove is formed on an inner wall of the main pipe, at least one protrusion is disposed on an outer surface of a rotating portion of the upper rotating spray arm, the at least one protrusion is disposed in the at least one groove, and the at least one protrusion is rotatable within the at least one groove.

3. The container washing machine according to claim 2, wherein the upper rotating spray arm comprises a first sub-spray arm and a second sub-spray arm, the at least one first fastener comprises two first fasteners, and the first sub-spray arm and the second sub-spray arm are respectively connected to two ends of the rotating portion of the upper rotating spray arm, and the two first fasteners are respectively disposed on the first sub-spray arm and the second sub-spray arm;wherein each of the first fasteners comprises a first elastic section and a second elastic section connected to the first elastic section, and for each of the first fasteners, the first elastic section thereof and the second elastic section thereof are bent relative to each other;wherein the main pipe comprises a first pipe body and a second pipe body communicated with the first pipe body, an outer diameter of the first pipe body is greater than an outer diameter of the second pipe body, so as to form a step on an outer surface of a joint between the first pipe body and the second pipe body, and the step is arcuate or inclined;wherein an inner diameter of the first pipe body is greater than an inner diameter of the rotating portion, the rotating portion of the upper rotating spray arm is disposed inside the first pipe body, and an inner diameter of the rotating portion of the upper rotating spray arm is substantially equal to the inner diameter of the second pipe body;wherein the second fastener comprises a protruding ring disposed around an outer surface of the first pipe body.

4. The container washing machine according to claim 2, wherein the main pipe comprises a first pipe body and a second pipe body communicated with the first pipe body, an outer diameter of the first pipe body is greater than an outer diameter of the second pipe body, so as to form a step on an outer surface at a joint between the first pipe body and the second pipe body, and the step is arcuate or inclined;wherein an inner diameter of the first pipe body is greater than an inner diameter of the rotating portion, the rotating portion of the upper rotating spray arm is disposed inside the first pipe body, and an inner diameter of the rotating portion of the upper rotating spray arm is substantially equal to the inner diameter of the second pipe body; wherein the at least one groove is disposed on an inner wall of the first pipe body and is close to the second pipe body.

5. The container washing machine according to claim 1, wherein the lower rotating spray arm comprises: a rotating portion and at least three spray arm bodies, the rotating portion is rotatable around the main pipe of the container washing machine, the at least three spray arm bodies are spaced along a peripheral edge of the rotating portion, and the at least three spray arm bodies are communicated with the rotating portion;wherein each of the spray arm bodies comprises at least two spray hole groups, each of the spray hole groups comprises spray holes, and in at least one of the at least two spray hole groups, at least two of the spray holes have different spraying directions.wherein for any one of the at least three spray arm bodies, the at least two spray hole groups are at different distances from the rotating portion, and the spray holes of any one of the at least two spray hole groups are at different distances from the rotating portion;wherein in any one of the at least two spray hole groups of each of the spray arm bodies, a spraying direction of one of the spray holes that is closest to the rotating portion is tilted in a direction away from the rotating portion.

6. The container washing machine according to claim 1, wherein the upper rotating spray arm comprises a first sub-spray arm and a second sub-spray arm, and the lower rotating spray arm comprises a third sub-spray arm and a fourth sub-spray arm;wherein each of the first sub-spray arm and the second sub-spray arm of the upper rotating spray arm comprises first spray holes, and each of the third sub-spray arm and the fourth sub-spray arm comprises second spray holes;wherein opening directions of the first spray holes and opening directions of the second spray holes are directed upward along the height direction, and at least part of the opening directions of the first spray holes and at least part of the opening directions of the second spray holes are tilted relative to the height direction; and / orthe opening directions of at least part of the first spray holes on the first sub-spray arm are different; and / orthe opening directions of at least part of the first spray holes on the second sub-spray arm are different; and / orthe opening directions of at least part of the second spray holes on the third sub-spray arm are different; and / orthe opening directions of at least part of the second spray holes on the fourth sub-spray arm are different.

7. The container washing machine according to claim 1, wherein the upper rotating spray arm comprises a first sub-spray arm and a second sub-spray arm, the first sub-spray arm defines at least one first power hole, and the second sub-spray arm defines at least one second power hole;wherein an opening direction of the at least one first power hole is at least partially opposite to an opening direction of the at least one second power hole, the opening direction of the at least one first power hole is partially downward along the height direction, and the opening direction of the at least one second power hole is partially downward along the height direction; orthe opening direction of the at least one first power hole is partially downward along the height direction, and the opening direction of the at least one second power hole is perpendicular to the height direction; orthe opening direction of the at least one first power hole and the opening direction of the at least one second power hole are perpendicular to the height direction and opposite to each other;wherein the lower rotating spray arm comprises a third sub-spray arm and a fourth sub-spray arm, the third sub-spray arm defines at least one third power hole and / or the fourth sub-spray arm defines at least one fourth power hole;wherein when the third sub-spray arm defines the at least one third power hole and the fourth sub-spray arm defines the at least one fourth power hole, an opening direction of the at least one third power hole is at least partially opposite to an opening direction of the at least one fourth power hole;wherein the opening direction of the at least one third power hole is partially downward along the height direction, and the opening direction of the at least one fourth power hole is partially downward along the height direction; orthe opening direction of the at least one third power hole is partially downward along the height direction, and the opening direction of the at least one fourth power hole is perpendicular to the height direction; orthe opening direction of the at least one third power hole and the opening direction of the at least one fourth power hole are perpendicular to the height direction and opposite to each other.

8. The container washing machine according to claim 1, wherein the container washing machine further comprises a drain component and a breather;wherein the inner container further comprises a circulating water inlet hole and a drain hole, and the washing chamber is communicated with the circulating water inlet hole and the drain hole;wherein the drain component is connected to the inner container, and an water inlet of the drain component is communicated with the drain hole;wherein the breather is connected to the drain component and the inner container, and a water inlet of the breather is communicated with a water outlet of the drain component, and a circulating water outlet hole of the breather is communicated with the circulating water inlet hole of the inner container;wherein the drain component is configured to drive washing liquid from the drain hole of the inner container to the water inlet of the breather, the washing liquid flowing into the breather is discharged from the circulating water inlet hole of the breather into the circulating water inlet hole of the inner container under gravity, and the washing liquid flows from the circulating water inlet hole of the inner container into the washing chamber of the inner container.

9. The container washing machine according to claim 1, wherein the upper rack comprises a rack body and a support component;wherein the rack body comprises a receiving portion and a mounting portion, the mounting portion is surrounded by the receiving portion, and at least a portion of the receiving portion is configured to accommodate containers s inclined relative to a horizontal plane;wherein the support component is detachably mounted on the mounting portion.

10. The container washing machine according to claim 9, wherein the rack body comprises first mounting structures disposed on the mounting portion, and the support component comprises a loading structure, support structures, and second mounting structures disposed on a lower surface of the loading structure;wherein the second mounting structures are detachably connected to the first mounting structures, the support structures are spaced apart on an upper surface of the loading structure, and each of the support structures is inclined relative to the loading structure;wherein a connection method of the first mounting structures and the second mounting structures comprises one of a snap-fit connection, a threaded connection, and a magnetic connection, and / or each of the support structures comprises a first support segment, a second support segment, and a third support segment;wherein for each of the support structures, the first support segment thereof, the second support segment thereof, and the third support segment thereof are connected in sequence, one end of the first support segment thereof that is farthest from the second support segment thereof is connected to the loading structure, the first support segment thereof is bent relative to the second support segment, the second support segment thereof is bent relative to the third support segment thereof, the third support segment thereof is inclined relative to the loading structure, and at least a portion of the third support segment thereof is located above the receiving portion;wherein the receiving portion comprises a first receiving section and a second receiving section, the first receiving section is disposed around a peripheral edge of the second receiving section, and the second receiving section is disposed around a peripheral edge of the mounting portion;wherein the first receiving section comprises a first inclined structure and first through holes defined by the first inclined structure;wherein the second receiving section comprises a second inclined structure and second through holes defined by the second inclined structure;wherein the first inclined structure and the second inclined structure are inclined relative to a horizontal plane.

11. The container washing machine according to claim 10, wherein the container washing machine further comprises an upper cover, the upper cover and the upper rack are detachably connected, and the upper cover is detachably covered on the upper rack;wherein a distance between an inner top surface of the upper cover and an end of each third support segment away from each second support segment is less than a predetermined value, so that when a container is placed on the third support segment of any one of the support structures, the container does not contact the inner top surface of the upper cover and does not fall off the third support segment of the one of the support structures.

12. The container washing machine according to claim 1, wherein the lower rack comprises at least one inner limiting piece, at least one outer limiting piece, and inclined support pieces;wherein the at least one inner limiting piece is configured to be placed inside a container from an opening of the container and is configured to limit a position of an inner wall of the container;wherein the at least one outer limiting piece is configured to be placed outside the container to limit a position of an outer wall of the container;wherein the inclined support pieces are spaced apart from each other, the inclined support pieces are connected to the at least one inner limiting piece, and the inclined support pieces are configured to support an edge of the opening of the container, so that the container is in an inclined state.

13. The container washing machine according to claim 12, wherein the lower rack comprises: a support base and a reinforcing base;wherein the support base is connected to the inclined support pieces, portions of at least two of the inclined support pieces extend upward from a top surface of the support base, and top surfaces of at least two of the inclined support pieces are at different distances from the top surface of the support base, so that the container is allowed to be placed in the inclined state on the inclined support pieces;wherein the at least one outer limiting piece is connected to the support base, and the at least one outer limiting piece is positioned on the top surface of the support base;wherein the reinforcing base is connected to at least two of the inclined support pieces, the reinforcing base is surrounded by the support base and is spaced apart from the support base, the reinforcing base and a limiting body of the at least one inner limiting piece are arc-shaped, and an opening defined by the reinforcing base is opposite to an opening direction defined by the limiting body of the at least one inner limiting piece;wherein the limiting body of the at least one outer limiting piece is arc-shaped, and the opening direction defined by the limiting body of the at least one inner limiting piece is opposite to an opening direction defined by the outer limiting piece; orthe at least one outer limiting piece comprises two outer limiting pieces, the two outer limiting pieces are disposed opposite to each other, and the at least one inner limiting piece is positioned between the two outer limiting pieces;wherein the inclined support pieces comprise step structures to define a first step surface and a second step surface, the first step surface and a second step surface are at different heights, the first step surface is closer to the at least one inner limiting piece than the second step surface, a height of the first step surface is less than that a height of the second step surface, the first step surface is configured to support a first container, and the second step surface is configured to support a second container;wherein the at least one inner limiting piece comprises an inner limiting piece, the at least one outer limiting piece comprises an outer limiting piece, and a height of one of the inner limiting pieces farthest from the outer limiting piece is greater than a height of one of the inner limiting pieces closest to the outer limiting piece, so that when the container is placed on the inclined support pieces, the outer limiting piece contacts the outer wall of the container to limit a position of the container; orthe at least one inner limiting piece comprises the inner limiting piece, and the at least one outer limiting piece comprises two outer limiting pieces, the two outer limiting pieces comprise a main limiting piece and an auxiliary limiting piece disposed opposite to the main limiting piece, the inner limiting piece is positioned between the main limiting piece and the auxiliary limiting piece, a height of one of the inclined support structures farthest from the main limiting piece is greater than a height of one of the inclined support structures closest to the main limiting piece, so that when the container is placed on the inclined support pieces, a contact area between the outer wall of the container and the main limiting piece is greater than a contact area between the outer wall of the container and the auxiliary limiting piece.

14. The container washing machine according to claim 1, wherein the lower rack comprises at least one inner limiting piece and inclined support pieces;wherein the at least one inner limiting piece is configured to be placed inside an anti-colic air tube through an opening of the anti-colic air tube, so as to limit a position of an inner wall of the anti-colic air tube;wherein the inclined support pieces are spaced apart from each other and are connected to the at least one inner limiting piece, and the inclined support pieces are configured to support an edge of the opening of the anti-colic air tube, so that the anti-colic air tube is in an inclined state;wherein the inclined support pieces comprise step structures, and each of the step structures comprises a first step surface and a second step surface;wherein for each of the step structures, the first step surface thereof and the second step surface thereof are at different heights, the first step surface thereof is closer to the at least one inner limiting piece than the second step surface thereof, the first step surface thereof is configured to support a first type of the anti-colic air tube, while the second step surface thereof is configured to support a second type of the anti-colic air tube.15-20. (canceled)

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