Spray system and dishwasher

Abstract

The present invention provides a spray system and dishwasher, relating to the technical field of kitchen appliances. The spray system comprises a lower spray arm and an upper spray arm. The lower spray arm is mounted below the upper spray arm, and an upper spray arm water inlet is provided on its lower surface. The lower spray arm is configured to communicate with a water source and direct water to the upper spray arm water inlet. The spray system provided by the present invention solves the technical problem of poor cleaning performance in dishwashers.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a spray system and a dishwasher. Background Art

[0002] Dishwashers are automatic dishwashing machines. Existing dishwashers use an external water pipe as the water supply component. A wash pump directs water from the bottom of the dishwasher through the water supply component to the upper spray arm. Due to the large distance between the upper spray arm and the bottom of the dishwasher, the water supply pipe is long and requires bending, resulting in significant water pressure loss. This results in insufficient water pressure from the upper spray arm, resulting in poor dishwashing performance. Summary of the Invention

[0003] The object of the present invention is to provide a spray system and a dishwasher to alleviate the technical problem of poor cleaning effect of dishwashers in the prior art.

[0004] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0005] In a first aspect, the present invention provides a spray system comprising a lower spray arm and an upper spray arm;

[0006] The lower spray arm is installed below the upper spray arm, and the lower surface of the upper spray arm is provided with an upper spray arm water inlet;

[0007] The lower spray arm is configured to be connected to a water source and guide the water flow to the water inlet of the upper spray arm.

[0008] Optionally, the lower spray arm is provided with a first pipe and a second pipe, and when the dishwasher is in operation, at least one of the first pipe and the second pipe is connected to a water source;

[0009] When the first pipe is connected to the water source, water flows into the upper spray arm and drives the upper spray arm to rotate;

[0010] When the second pipe is connected to the water source, the water flow drives the lower spray arm to rotate.

[0011] Optionally, the spray system further includes a water dividing sheet;

[0012] The water dividing plate is provided with a first regulating hole and a second regulating hole;

[0013] When the first pipe is connected to the first regulating hole, the first pipe is connected to the water source;

[0014] When the second pipe is connected to the second regulating hole, the second pipe is connected to the water source.

[0015] Optionally, the second pipe is sleeved on the outside of the first pipe, with a gap left between the two;

[0016] When the gap is connected to the second adjustment hole, water flow drives the lower spray arm to rotate.

[0017] Optionally, the spray system further comprises a connecting component and a fixing component;

[0018] The fixing assembly is rotatably connected to the upper spray arm through the connecting assembly, and the fixing assembly is used to be connected to the first shelf.

[0019] Optionally, the connecting assembly includes a mounting portion and a connecting buckle, and the mounting portion is provided on the upper spray arm;

[0020] The connecting buckle is connected to the mounting portion, and a partial structure of the fixing assembly is located between the connecting buckle and the mounting portion.

[0021] Optionally, the connecting buckle and the mounting portion are detachably connected via a first clamping structure.

[0022] Optionally, the fixing assembly includes a fixing member and a fixing nut;

[0023] The fixing nut is located between the connecting buckle and the mounting portion and is rotatably connected to the mounting portion;

[0024] One end of the fixing member is sleeved on the connecting buckle and connected to the fixing nut, and the other end is used to be connected to the first shelf.

[0025] Optionally, the fixing member and the fixing nut are detachably connected via a second clamping structure.

[0026] Optionally, the fixing member is provided with a fixing groove, and the fixing groove extends along the circumference of the fixing member;

[0027] The fixing groove is used to connect with the first shelf.

[0028] Optionally, a guide portion is provided on one side of the upper spray arm, and the guide portion is provided with a guide channel connected to the water inlet of the upper spray arm;

[0029] The cross-sectional size of the guide channel gradually increases from an end close to the upper spray arm to an end away from the upper spray arm.

[0030] Optionally, the spray system further comprises a water supply pipe;

[0031] The water supply pipe is communicated with the lower spray arm and the upper spray arm respectively.

[0032] Optionally, a water outlet and a water inlet are provided at both ends of the water supply pipe respectively;

[0033] The water inlet is located at the end of the water supply pipe close to the lower spray arm;

[0034] The opening direction of the water outlet is arranged along the axial direction of the water supply pipe, or is arranged at an angle to the axial direction of the water supply pipe.

[0035] Optionally, when the opening direction of the water outlet is arranged at an angle to the axial direction of the water supply pipe, the water supply pipe includes a connecting column and a water retaining wall;

[0036] One end of the connecting column is connected to the water supply pipe, and the other end is connected to the water retaining wall. The gap between the water supply pipe and the water retaining wall forms the water outlet.

[0037] Optionally, the water supply pipe further includes a mounting seat;

[0038] The mounting seat is provided at one end of the water supply pipe close to the lower spray arm;

[0039] The end surface of the mounting seat away from the water outlet is provided with a mounting groove for connecting with the second shelf.

[0040] Optionally, the water supply pipe is rod-shaped, and has the water inlet at one end and the water outlet at the other end.

[0041] Optionally, the water supply pipe is configured as a telescopic pipe;

[0042] One end of the telescopic pipe is provided with the water inlet, and the side wall of the other end is provided with the water outlet.

[0043] Optionally, the telescopic pipeline includes a first pipeline, a second pipeline and a third pipeline;

[0044] The first end of the first pipe is provided with the water outlet, and the second end of the first pipe is inserted into the first end of the second pipe;

[0045] The first end of the third pipeline is sleeved on the second end of the second pipeline, and the second end of the third pipeline is provided with the water inlet.

[0046] Optionally, a first limit platform is provided on the outer wall of the second end of the first pipeline, and a first blocking platform is provided on the inner wall of the first end of the second pipeline, and when the telescopic pipe is extended, the first limit platform abuts against the first blocking platform; and / or,

[0047] A second limiting platform is provided on the outer wall of the second end of the second pipeline, and a second blocking platform is provided on the inner wall of the first end of the third pipeline. When the telescopic pipe is extended, the second limiting platform abuts against the second blocking platform.

[0048] Optionally, a first limiting platform is provided on the outer wall of the second end of the first pipeline, and a first stop platform is provided on the inner wall of the second end of the second pipeline, and when the telescopic pipe is shortened, the first limiting platform abuts against the first stop platform; and / or,

[0049] A second limiting platform is provided on the outer wall of the second end of the second pipeline, and a second stopping platform is provided on the inner wall of the second end of the third pipeline. When the telescopic pipe is shortened, the second limiting platform abuts against the second stopping platform.

[0050] In a second aspect, the present invention provides a dishwasher comprising a housing, a first rack, a second rack, a spray arm base, and a spray system as described above;

[0051] The housing is provided with a cavity for accommodating the first shelf, the second shelf and the spray arm seat;

[0052] The spray arm seat is arranged on the bottom wall of the cavity, and the first shelf and the second shelf are both arranged in the cavity and spaced apart along the height direction of the cavity;

[0053] The lower spray arm of the spray system is installed on the spray arm seat, and the upper spray arm is installed on the first shelf.

[0054] Optionally, a avoidance hole is provided at a position of the second shelf corresponding to the first pipe of the lower spray arm;

[0055] Alternatively, the water supply pipe of the sprinkler system is installed on the second rack.

[0056] Based on the above technical solutions, the technical effects achieved by the present invention are analyzed as follows:

[0057] The spray system provided by the present invention includes a lower spray arm and an upper spray arm. The lower spray arm is mounted below the upper spray arm, and the upper spray arm water inlet is provided on its lower surface. The lower spray arm is configured to communicate with a water source and direct water to the upper spray arm water inlet. Water flows through the lower spray arm and then into the upper spray arm, using the shortest straight line between the two points as the water supply path. This reduces the long path caused by multiple bends in the existing water supply assembly, minimizes pressure loss in the water supply assembly, and improves the cleaning effect of the dishwasher.

[0058] Furthermore, the lower spray arm is equipped with a first pipe and a second pipe. A water diverter plate controls the connection between the first or second pipe and a water source. When the first pipe is connected to the water source, water flows into the upper spray arm and drives the upper spray arm to rotate. When the second pipe is connected to the water source, the water flow drives the lower spray arm to rotate. Specifically, the operating state of the upper or lower spray arm of the dishwasher is adjusted by controlling the connection between the first regulating hole in the water diverter plate and the first pipe, and the connection between the second regulating hole and the second pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0060] Figure 1 A schematic structural diagram of a lower spray arm in a spray system provided in an embodiment of the present invention;

[0061] Figure 2 A cross-sectional view of a lower spray arm in a spray system provided in an embodiment of the present invention;

[0062] Figure 3 A schematic structural diagram of a water diversion plate in a spray system provided by an embodiment of the present invention;

[0063] Figure 4 The internal structure of the dishwasher provided by the embodiment of the present invention Figure 1 ;

[0064] Figure 5 for Figure 4 A partial enlarged view of point A in the middle;

[0065] Figure 6 Schematic diagram of the structure of the upper spray arm in the spray system provided by the embodiment of the present invention Figure 1 ;

[0066] Figure 7 Schematic diagram of the structure of the upper spray arm in the spray system provided by the embodiment of the present invention Figure 2 ;

[0067] Figure 8 An exploded view of an upper spray arm in a spray system provided in an embodiment of the present invention;

[0068] Figure 9 A partial cross-sectional view of a dishwasher provided by an embodiment of the present invention;

[0069] Figure 10 for Figure 9 A partial enlarged view of point B in the middle;

[0070] Figure 11 Schematic diagram of the structure of the upper spray arm in the spray system provided by the embodiment of the present invention Figure 3 ;

[0071] Figure 12 A schematic structural diagram of a connecting buckle in a spray system provided by an embodiment of the present invention;

[0072] Figure 13A schematic structural diagram of a fixing nut in a spray system provided by an embodiment of the present invention;

[0073] Figure 14 A schematic structural diagram of a fixing member in a spray system provided by an embodiment of the present invention;

[0074] Figure 15 Schematic diagram of the connection between the second rack and the water supply pipe in the dishwasher provided in an embodiment of the present invention Figure 1 ;

[0075] Figure 16 Schematic diagram of the connection between the second rack and the water supply pipe in the dishwasher provided in an embodiment of the present invention Figure 2 ;

[0076] Figure 17 A schematic diagram of a telescopic pipe in a dishwasher provided by an embodiment of the present invention when extended;

[0077] Figure 18 for Figure 17 A partial enlarged view of point C in the middle;

[0078] Figure 19 A cross-sectional view of a telescopic pipe in a sprinkler system provided by an embodiment of the present invention when shortened;

[0079] Figure 20 for Figure 19 A partial enlarged view of point D in the middle;

[0080] Figure 21 for Figure 19 A partial enlarged view of point E in the middle;

[0081] Figure 22 A cross-sectional view of a telescopic pipe in a sprinkler system provided by an embodiment of the present invention when extended;

[0082] Figure 23 for Figure 22 A partial enlarged view of point F in the middle;

[0083] Figure 24 for Figure 22 A partial enlarged view of point G in the middle.

[0084] icon:

[0085] 100 - lower spray arm; 110 - first pipe; 120 - second pipe; 130 - gap; 151 - flow channel; 152 - spray hole; 140 - main body; 150 - branch spray arm; 200 - upper spray arm; 210 - mounting part; 211 - card slot; 220 - flow guide part; 221 - flow guide channel; 300 - water diversion plate; 310 - first adjustment hole; 320 - second adjustment hole; 330 - mounting hole; 410 - connecting buckle; 411 - limit part; 412 - card buckle; 500 - fixing component; 510 - fixing piece; 511 - fixing slot; 512 - fixing buckle; 513 - rotating Buckle; 520-fixing nut; 521-limiting groove; 522-boss; 600-water supply pipe; 610-water outlet; 620-water inlet; 630-connecting column; 640-water retaining wall; 650-mounting seat; 660-first pipeline; 661-first limiting platform; 670-second pipeline; 671-first blocking platform; 672-second limiting platform; 673-first stopping platform; 680-third pipeline; 681-second blocking platform; 682-second stopping platform; 690-protrusion; 710-first shelf; 720-second shelf; 800-spray arm seat; 900-casing. DETAILED DESCRIPTION

[0086] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0087] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0088] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0089] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0090] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0091] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0092] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0093] Example 1:

[0094] The spray system provided by the present embodiment includes a lower spray arm 100 and an upper spray arm 200. The lower spray arm 100 is mounted below the upper spray arm 200, and the upper spray arm water inlet is provided on its lower surface. The lower spray arm 100 is configured to communicate with a water source and direct water to the upper spray arm water inlet. Water flows through the lower spray arm 100 and then into the upper spray arm 200, using the shortest straight line between the two points as the water supply path. This reduces the multiple bends in the existing water supply assembly, resulting in a long path, and minimizes pressure loss in the water supply assembly, thereby improving the dishwasher's cleaning performance.

[0095] The structure and shape of the lower spray arm 100 are described in detail below:

[0096] In an optional solution of an embodiment of the present invention, the lower spray arm 100 is provided with a first pipe 110 and a second pipe 120. When the dishwasher is operating, at least one of the first pipe 110 and the second pipe 120 is connected to a water source; when the first pipe 110 is connected to the water source, water flows into the upper spray arm 200 and drives the upper spray arm 200 to rotate; when the second pipe 120 is connected to the water source, the water drives the lower spray arm 100 to rotate.

[0097] Specifically, see Figure 1 and Figure 2 The first pipe 110 extends through the lower spray arm 100 along the rotation axis of the lower spray arm 100; the second pipe 120 has a circular cross-section, with its axis coinciding with the rotation axis of the lower spray arm 100. Of course, the second pipe 120 may have other cross-sectional shapes, such as a square, which also fall within the scope of protection of the present invention.

[0098] By controlling the connection of at least one of the first and second pipes 110, 120 to a water source, the lower spray arm 100 functions as a water supply channel for the upper spray arm 200 and also as a rotary sprayer. The axis of the second pipe 120 coincides with the rotation axis of the lower spray arm 100, positioning the second pipe 120 in the center of the lower spray arm 100. This allows water to flow evenly from the second pipe 120 into the multiple branch spray arms 150 of the lower spray arm 100, driving their rotation.

[0099] In an optional scheme of an embodiment of the present invention, the spray system also includes a water dividing plate 300; the water dividing plate 300 is provided with a first adjustment hole 310 and a second adjustment hole 320; when the first pipe 110 is connected to the first adjustment hole 310, the first pipe 110 is connected to the water source; when the second pipe 120 is connected to the second adjustment hole 320, the second pipe 120 is connected to the water source.

[0100] Specifically, see Figure 3 The water diverter 300 is set to be circular, and a mounting hole 330 is provided at the axial position for mounting the water diverter 300 in the spray arm seat 800; preferably, the first adjustment hole 310 and the second adjustment hole 320 are respectively located on both sides of the mounting hole 330, so that when the water diverter 300 rotates around the mounting hole 330, the position of the first adjustment hole 310 and the second adjustment hole 320 changes.

[0101] The first adjustment hole 310 of the water diverter 300 is connected to the first pipe 110, so that the first pipe 110 is connected to the water source, thereby enabling the upper spray arm 200 to rotate; alternatively, the second adjustment hole 320 is connected to the second pipe 120, so that the second pipe 120 is connected to the water source, thereby enabling the lower spray arm 100 to rotate; alternatively, the first adjustment hole 310 is connected to the first pipe 110, and the second adjustment hole 320 is connected to the second pipe 120, thereby enabling the upper spray arm 200 and the lower spray arm 100 to rotate simultaneously; by adjusting the positions of the first adjustment hole 310 and the second adjustment hole 320 of the water diverter 300, at least one of the first pipe 110 and the second pipe 120 is connected to the water source, thereby enabling the adjustment of the working state of the upper spray arm 200 or the lower spray arm 100 of the dishwasher.

[0102] As an embodiment, the second pipe 120 is spaced apart from the first pipe 110 . The positional relationship and distance between the first adjustment hole 310 and the second adjustment hole 320 correspond to the positional relationship and distance between the first pipe 110 and the second pipe 120 .

[0103] Specifically, when only the first pipe 110 needs to be connected to the water source, the first pipe 110 is connected to the first adjustment hole 310, and the second adjustment hole 320 is located on the side of the first pipe 110 away from the second pipe 120; when only the second pipe 120 needs to be connected to the water source, the second pipe 120 is connected to the second adjustment hole 320, and the first adjustment hole 310 is located on the side of the second pipe 120 away from the first pipe 110; when both the second pipe 120 and the first pipe 110 need to be connected to the water source, the first pipe 110 is connected to the second adjustment hole 320, and the second pipe 120 is connected to the first adjustment hole 310.

[0104] By rotating the water dividing plate 300 , the positions of the first regulating hole 310 and the second regulating hole 320 are changed, so that at least one of the second pipe 120 and the first pipe 110 is connected to the water source.

[0105] As another embodiment, the second pipe 120 is sleeved on the outside of the first pipe 110 with a gap 130 left between the two; when the gap 130 is connected to the second adjustment hole 320, the water flow drives the lower spray arm 100 to rotate.

[0106] Specifically, the cross-section of the first pipe 110 is circular, and the axis of the first pipe 110 coincides with the axis of the second pipe 120. The first adjustment hole 310 is circular, and the second adjustment hole 320 is annular to match the shape of the slit 130. If communication between the first pipe 110 and the second pipe 120 is required, the first and second adjustment holes 310, 320 can be provided on the water diversion plate 300, spaced apart along the circumference of the water diversion plate 300. To connect the first pipe 110, the first adjustment hole 310 is connected to the first pipe 110; to connect the second pipe 120, the second adjustment hole 320 is connected to the slit 130.

[0107] When it is necessary to connect at least one of the first pipe 110 and the second pipe 120, a third regulating hole is further provided on the water dividing plate 300. The third regulating hole is circular and its diameter is equal to the inner diameter of the second pipe 120. When the first pipe 110 needs to be connected, the first regulating hole 310 is connected to the first pipe 110. When the second pipe 120 needs to be connected, the second regulating hole 320 is connected to the gap 130. When the first pipe 110 and the second pipe 120 need to be connected at the same time, the third regulating hole is connected to the second pipe 120, thereby realizing that the first pipe 110 and the second pipe 120 are connected to the water source at the same time.

[0108] The axis of the second pipe 120 coincides with the axis of the first pipe 110, reducing the space occupied by the first and second pipes 110, and thus the volume of the lower spray arm 100. The second adjustment hole 320 is annular, matching the shape of the slit 130. When the second adjustment hole 320 is connected to the second pipe 120, the second channel is connected to the water source, thereby driving the lower spray arm 100 to rotate. In addition, the annular shape of the slit 130 ensures that the water flows evenly into the multiple branch spray arms 150 after passing through the slit 130, causing the lower spray arm 100 to rotate at a constant speed.

[0109] In an optional scheme of an embodiment of the present invention, the lower spray arm 100 includes a main body 140 and at least one branch spray arm 150; the first pipe 110 and the second pipe 120 are both arranged on the main body 140; one end of the branch spray arm 150 is connected to the main body 140, and the other end extends in a direction away from the main body 140; when there are multiple branch spray arms 150, the multiple branch spray arms 150 are arranged at intervals along the circumference of the main body 140.

[0110] Specifically, the branch spray arms 150 may be provided with one, two, or three. In this embodiment, three branch spray arms 150 are provided, and the three branch spray arms 150 are evenly spaced along the circumference of the main body 140 to improve the uniformity of dishwashing. More preferably, the branch spray arms 150 are integrally formed with the main body 140.

[0111] The branch spray arm 150 and the main body 140 are formed by a mold at one time, thereby ensuring the sealing performance of the lower spray arm 100 .

[0112] In an optional solution of the embodiment of the present invention, the branch spray arm 150 is provided with a flow channel 151 and a spray hole 152 that are connected to each other, and one end of the flow channel 151 is connected to the second pipe 120 .

[0113] Specifically, branch spray arm 150 is configured in an elongated strip shape, with flow channel 151 extending along the length of branch spray arm 150. In this embodiment, spray holes 152 are provided on the upper surface of branch spray arm 150. When water flows from the second through-tube, through flow channel 151, and out of spray holes 152, it drives branch spray arm 150 to rotate around main body 140 and spray. Furthermore, branch spray arm 150 is provided with multiple spray holes 152, which are spaced apart along the length of branch spray arm 150.

[0114] The distances between the multiple spray holes 152 on the same branch spray arm 150 and the axis of the main body 140 are different, that is, the entire dishwasher has multiple circular spray tracks with different diameters, which improves the cleaning efficiency and the cleaning effect.

[0115] The shape and structure of the upper spray arm 200 are described in detail below:

[0116] In an optional solution of the embodiment of the present invention, an upper spray arm water inlet is provided on a surface of the upper spray arm 200 opposite to the lower spray arm 100 , and the upper spray arm water inlet is configured to receive water sprayed by the lower spray arm 100 .

[0117] Specifically, as an implementation method, see Figure 4 and Figure 5 Water flows from the first pipe 110 of the lower spray arm 100 directly into the water inlet of the upper spray arm. This embodiment utilizes the pressure and surface tension of the water flow. When the water pressure is high, the water column is sprayed upward from the first pipe 110 into the guide portion 220 to supply water to the upper spray arm 200, reducing the number of assembly parts in the dishwasher.

[0118] As another embodiment, the lower spray arm 100 and the upper spray arm 200 are connected via a water supply pipe 600. In this embodiment, the shortest straight line between the two points is used as the water supply path, which reduces the bends in the water supply pipe 600 and thus reduces the pressure loss of the water flow in the water supply pipe 600.

[0119] The upper spray arm 200 is provided with an upper spray arm water inlet to divert water flow to the upper spray arm 200 .

[0120] In an optional solution of an embodiment of the present invention, a guide portion 220 is provided on one side of the upper spray arm 200, and the guide portion 220 is provided with a guide channel 221 connected to the water inlet of the upper spray arm; the cross-sectional area of ​​the guide channel 221 gradually increases from one end close to the upper spray arm 200 to the end away from the upper spray arm 200.

[0121] Specifically, see Figures 6 to 10 When water flows directly from the first pipe 110 of the lower spray arm 100 into the water inlet of the upper spray arm, the upper spray arm 200 is provided with a guide portion 220; the cross-section of the guide portion 220 is set to be annular, and the diameter of the inner wall gradually increases from the end close to the upper spray arm 200 to the end away from the upper spray arm 200.

[0122] The cross-sectional area of ​​the guide channel 221 gradually increases, so as to conveniently receive the water sprayed from the water source and guide the water flow into the upper spray arm 200 .

[0123] In an optional solution of the embodiment of the present invention, the spray system further includes a connecting assembly and a fixing assembly 500 ; the fixing assembly 500 is rotatably connected to the upper spray arm 200 via the connecting assembly, and the fixing assembly 500 is used to connect to the first shelf 710 .

[0124] The fixing assembly 500 is rotatably connected to the upper spray arm 200 . When the fixing assembly 500 is installed on the first rack 710 , the upper spray arm 200 can be installed on the first rack 710 , which facilitates the installation of the upper spray arm 200 .

[0125] In an optional solution of an embodiment of the present invention, the connecting assembly includes a mounting portion 210 and a connecting buckle 410, and the mounting portion 210 is arranged on the upper spray arm 200; the connecting buckle 410 is connected to the mounting portion 210, and part of the structure of the fixing assembly 500 is located between the connecting buckle 410 and the mounting portion 210.

[0126] Specifically, the cross-sections of the mounting portion 210 and the connecting buckle 410 are both set to be annular, and the connecting buckle 410 is inserted into the mounting portion 210. Furthermore, the mounting portion 210 is provided on a side of the upper spray arm 200 away from the guide portion 220.

[0127] By setting the mounting portion 210 on the upper spray arm 200 and inserting the connecting buckle 410 into the mounting portion 210, the connection between the connecting component and the upper spray arm 200 is achieved; part of the structure of the fixing component 500 is located between the connecting buckle 410 and the mounting portion 210, thereby achieving a rotational connection between the mounting portion 210 and the fixing component 500, and thus achieving the upper spray arm 200 being able to rotate around the axis of the mounting portion 210 to wash the dishes.

[0128] In an optional solution of the embodiment of the present invention, the connecting buckle 410 and the mounting portion 210 are detachably connected via a first clamping structure.

[0129] Specifically, the first snap-fit ​​structure includes a snap-fit ​​412 provided on the inner wall of the mounting portion 210, and a slot 211 provided on the outer wall of the connecting buckle 410, the connecting buckle 410 is inserted into the mounting portion 210, and the snap-fit ​​412 is inserted into the slot 211; or, the first snap-fit ​​structure includes a slot 211 provided on the inner wall of the mounting portion 210, and a snap-fit ​​412 provided on the outer wall of the connecting buckle 410, the connecting buckle 410 is inserted into the mounting portion 210, and the snap-fit ​​412 is inserted into the slot 211. Of course, other connection methods, such as threaded connection, etc., should also be within the scope of protection of the embodiment of the present invention. In this embodiment, please refer to Figures 9 to 12 The first snap-fit ​​structure includes a slot 211 provided on the inner wall of the mounting portion 210 and a buckle 412 provided on the outer wall of the connecting buckle 410, and the buckle 412 abuts against the side wall of the slot 211; furthermore, there are multiple slots 211 and buckles 412, and the multiple slots 211 are arranged at intervals along the circumference of the mounting portion 210, and the multiple buckles 412 are plugged into the multiple slots 211 in a one-to-one correspondence.

[0130] The connecting buckle 410 and the mounting portion 210 are detachably connected by inserting the buckle 412 into the slot 211 , thereby facilitating the installation and removal of the upper spray arm 200 .

[0131] In an optional solution of an embodiment of the present invention, the fixing assembly 500 includes a fixing member 510 and a fixing nut 520; the fixing nut 520 is located between the connecting buckle 410 and the mounting portion 210, and is rotatably connected to the mounting portion 210; one end of the fixing member 510 is sleeved on the connecting buckle 410 and connected to the fixing nut 520, and the other end is used to connect to the first shelf 710.

[0132] Specifically, see 12 to Figure 14The cross-sections of the fixing member 510 and the fixing nut 520 are both annular. The fixing nut 520 is sleeved onto the exterior of the mounting portion 210, with a clearance fit therewith. A stopper 411 is provided on the outer wall of the end of the connecting buckle 410 facing away from the mounting portion 210. The stopper 411 extends along the circumference of the connecting buckle 410 and has an outer diameter greater than that of the connecting buckle 410. A stopper groove 521 is defined on the upper end surface of the fixing nut 520. The stopper 411 is located within the stopper groove 521 and abuts against the bottom wall of the stopper groove 521. The lower end surface of the fixing nut 520 abuts against the upper end surface of the upper spray arm 200. The stopper 411 cooperates with the upper spray arm 200 to limit the position of the fixing nut 520, preventing it from disengaging from the mounting portion 210. One end of the fixing member 510 is sleeved onto the connecting buckle 410, with its outer wall engaging the sidewalls of the stopper groove 521. The other end is mounted on the first shelf 710. When installing the upper spray arm 200, first, the fixing nut 520 is put on the mounting portion 210, and the connecting buckle 410 is aligned with the mounting portion 210 and pressed in. The connecting buckle 410 is connected to the mounting portion 210 on the upper spray arm 200, and the fixing nut 520 is restricted between the connecting buckle 410 and the upper spray arm 200; then, one end of the fixing member 510 is put on the connecting buckle 410 and connected with the fixing nut 520. The fixing member 510 and the fixing nut 520 cannot move relative to each other, forming an assembly part; finally, the fixing member 510 is fixed to the first shelf 710 to complete the installation of the upper spray arm 200.

[0133] The fixing nut 520 is located between the connecting buckle 410 and the mounting portion 210 and has a clearance fit with the mounting portion 210. This allows the fixing assembly 500 to be rotatably connected to the upper spray arm 200 via the connecting assembly, thereby enabling the upper spray arm 200 to rotate about the axis of the mounting portion 210. One end of the fixing member 510 is connected to the fixing nut 520, and the other end is mounted on the first bracket 710, preventing the fixing nut 520 from rotating with the upper spray arm 200.

[0134] In an optional solution of the embodiment of the present invention, the fixing member 510 and the fixing nut 520 are detachably connected via a second clamping structure.

[0135] Specifically, the second clamping structure includes a buckle 513 provided on the outer wall of the fixing member 510, and a corresponding boss 522 provided on the inner wall of the fixing nut 520, the fixing member 510 is inserted into the fixing nut 520 and the buckle 513 abuts against the boss 522; or the second clamping structure includes a boss 522 provided on the outer wall of the fixing member 510, and a buckle 513 provided on the inner wall of the fixing nut 520, the fixing member 510 is inserted into the fixing nut 520 and the buckle 513 abuts against the boss 522. In this embodiment, please refer to Figure 13 and Figure 14The second engaging structure includes a knob 513 provided on the outer wall of the fixing member 510 and a boss 522 corresponding to the side wall of the limiting groove 521. During installation, the fixing nut 520 is sleeved on the mounting portion 210, with its lower end surface abutting against the upper spray arm 200. The fixing member 510 is inserted into the limiting groove 521 of the fixing nut 520, with its lower end surface abutting against the bottom wall of the limiting groove 521. The fixing member 510 is rotated, causing the knob 513 to screw into place between the boss 522 and the bottom wall of the limiting groove 521. The boss 522 and the bottom wall of the limiting groove 521 work together to limit the position of the fixing member 510. Furthermore, a plurality of knobs 513 and bosses 522 are provided. The plurality of knobs 513 are spaced apart along the circumference of the fixing member 510, and the plurality of bosses 522 abut against the plurality of knobs 513 in a one-to-one correspondence. More preferably, the upper surface of the rotary buckle 513 includes an inclined surface, which facilitates the rotary buckle 513 to be screwed into between the boss 522 and the bottom wall of the limiting groove 521 .

[0136] The rotary buckle 513 abuts against the boss 522 to achieve a detachable connection between the fixing member 510 and the fixing nut 520 , thereby facilitating the installation and removal of the upper spray arm 200 .

[0137] In an optional solution of the embodiment of the present invention, the fixing member 510 is provided with a fixing groove 511 , and the fixing groove 511 extends along the circumference of the fixing member 510 ; the fixing groove 511 is used to connect with the first shelf 710 .

[0138] Specifically, the bottom wall of the fixing groove 511 is arc-shaped and recessed away from the opening of the fixing groove 511. When the fixing member 510 is installed on the first shelf 710, the connecting section on the first shelf 710 is snapped into the fixing groove 511, thereby installing the upper spray arm 200 on the first shelf 710, making it easier to install the upper spray arm 200.

[0139] In an optional solution of the embodiment of the present invention, a fixing buckle 512 is provided on the side wall of the fixing groove 511 , and the fixing buckle 512 is used to be engaged with the first shelf 710 .

[0140] Specifically, see Figure 14 A fixing buckle 512 is provided on the upper side wall of the fixing groove 511 , and a plurality of fixing buckles 512 are provided. The plurality of fixing buckles 512 are spaced apart along the circumference of the fixing member 510 .

[0141] A fixing buckle 512 is provided on the side wall of the fixing groove 511 to lock the first shelf 710 in the fixing groove 511 , thereby improving the connection strength between the upper spray arm 200 and the first shelf 710 .

[0142] The structure and shape of the water supply pipe 600 are described in detail below:

[0143] In an optional solution of the embodiment of the present invention, the spray system further includes a water supply pipe 600; the water supply pipe 600 is communicated with the first pipeline 110 and the upper spray arm 200 respectively.

[0144] One end of the water supply pipe 600 is connected to the water source through the first pipe 110 in the lower spray arm 100, and the other end guides the water flow into the upper spray arm 200. The shortest straight line path between the two points is used as the water supply path, which reduces the phenomenon of a longer path caused by multiple bends in the original water supply component, thereby reducing the pressure loss of the water flow in the water supply pipe 600 and improving the cleaning effect of the dishwasher.

[0145] In an optional scheme of an embodiment of the present invention, a water outlet 610 and a water inlet 620 are respectively provided at both ends of the water supply pipe 600; the water inlet 620 is located at the end of the water supply pipe 600 close to the first pipe 110; the opening direction of the water outlet 610 is set along the axial direction of the water supply pipe 600, or is set at an angle to the axial direction of the water supply pipe 600.

[0146] Specifically, the water supply pipe 600 is configured as a cylinder. Of course, the water supply pipe 600 can be configured as other shapes, such as a cylinder with a square cross-section, which should also be within the protection scope of the embodiment of the present invention.

[0147] A water outlet 610 and a water inlet 620 are respectively provided at both ends of the water supply pipe 600 . Water flows into the water supply pipe 600 from the water inlet 620 and flows out from the water outlet 610 , thereby achieving the diversion function of the water supply pipe 600 .

[0148] In an optional scheme of an embodiment of the present invention, when the opening direction of the water outlet 610 is set at an angle to the axial direction of the water supply pipe 600, the water supply pipe 600 includes a connecting column 630 and a water retaining wall 640; one end of the connecting column 630 is connected to the water supply pipe 600, and the other end is connected to the water retaining wall 640, and the gap between the water supply pipe 600 and the water retaining wall 640 forms the water outlet 610.

[0149] Specifically, see Figure 20 The connecting column 630 is configured as a cylinder, with its axis parallel to the axis of the water supply pipe 600. Furthermore, a plurality of connecting columns 630 are provided, and the plurality of connecting columns 630 are spaced apart along the circumference of the water supply pipe 600. The water retaining wall 640 is configured as a disc, with its axis coinciding with the axis of the water supply pipe 600. Preferably, the diameter of the water retaining wall 640 is equal to the diameter of the water supply pipe 600.

[0150] The water retaining wall 640 is connected to the end of the water supply pipe 600 through the connecting column 630, and the gap between the two forms the water outlet 610, so that the opening direction of the water outlet 610 is perpendicular to the axial direction of the water supply pipe 600, so that when the water flows out from the water outlet 610, it is sprayed along the radial direction of the water supply pipe 600, thereby realizing the function of the water supply pipe 600 to guide the water flow into the upper spray arm 200.

[0151] In an optional solution of the embodiment of the present invention, the inner diameter of the water inlet 620 gradually increases from the end away from the first pipe 110 to the end close to the first pipe 110 .

[0152] Specifically, the water supply pipe 600 and the lower spray arm 100 are spaced apart in the height direction of the dishwasher casing 900. The water supply pipe 600 is located above the lower spray arm 100, and the axis of the water supply pipe 600 coincides with the axis of the first pipe 110, so that the water source flows into the water supply pipe 600 after passing through the first pipe 110, and the space occupied by the water supply pipe 600 and the lower spray arm 100 is reduced, thereby making the structure of the dishwasher more compact.

[0153] The inner diameter of the water inlet 620 gradually increases from top to bottom. After the water flows out of the first pipe 110, the water inlet 620 guides the water to flow into the water supply pipe 600 to avoid water waste.

[0154] In an optional solution of an embodiment of the present invention, the water supply pipe 600 also includes a mounting seat 650; the mounting seat 650 is arranged at one end of the water supply pipe 600 close to the first pipe 110; the end face of the mounting seat 650 away from the water outlet 610 is provided with a mounting groove for connecting to the second shelf 720.

[0155] Specifically, see Figure 15 The cross section of the mounting base 650 is annular, and its axis coincides with the axis of the water supply pipe 600. In this embodiment, the lower end surface of the mounting base 650 is provided with two mounting grooves, which are arranged at an angle and are respectively used to engage with the two connecting posts 630 of the second shelf 720.

[0156] The water supply pipe 600 is provided with a mounting seat 650 , which enables the water supply pipe 600 to be detachably connected to the second rack 720 . The water supply pipe 600 can move together with the second rack 720 , and the installation and removal of the water supply pipe 600 are convenient.

[0157] In an optional solution of the embodiment of the present invention, the water supply pipe 600 is rod-shaped, with a water inlet 620 provided at one end and a water outlet 610 provided at the other end.

[0158] Specifically, the cross section of the water supply pipe 600 is set to be annular, the middle part is used for water flow to pass through, and the openings at both ends are respectively a water inlet 620 and a water outlet 610.

[0159] The water supply pipe 600 is rod-shaped, has a simple structure and realizes the flow diversion function of the water supply pipe 600.

[0160] In an optional solution of the embodiment of the present invention, the water supply pipe 600 is provided with a plurality of protrusions 690 , and the plurality of protrusions 690 are arranged at intervals along the axial direction of the water supply pipe 600 .

[0161] Specifically, the number of protrusions 690 may be two, four, or six. In this embodiment, see Figure 15 There are four protrusions 690, and the four protrusions 690 are divided into two groups. The two groups of protrusions 690 are symmetrically arranged along the axial direction of the water supply pipe 600; each group is provided with two protrusions 690, and the two protrusions 690 in the same group are spaced apart along the axial direction of the water supply pipe 600.

[0162] The water supply pipe 600 is equipped with multiple protrusions 690, which serve as supports for pots and larger tableware. When placing a pot, one end of the pot is secured to the second rack 720, and the other end is secured to the protrusions 690, making the water supply pipe 600 a convenient pot support. Because there are multiple protrusions 690, different pots can be placed on different protrusions 690, accommodating a wider range of pot sizes and expanding the dishwasher's applicability.

[0163] In another embodiment of the present invention, the water supply pipe 600 is configured as a telescopic pipe; a water inlet 620 is provided at one end of the telescopic pipe, and a water outlet 610 is provided on the side wall of the other end.

[0164] Specifically, see Figure 16 When the water supply pipe 600 is needed to divert the flow, the telescopic pipe is extended; when the water supply pipe 600 is not needed to divert the flow, the telescopic pipe is shortened.

[0165] The water supply pipe 600 is configured as a telescopic pipe. The user can extend the telescopic pipe when needed, and shorten the telescopic pipe when not needed, according to actual needs, thereby improving the practicality of the dishwasher.

[0166] In an optional scheme of an embodiment of the present invention, the telescopic pipe includes a first pipe 660, a second pipe 670 and a third pipe 680; the first end of the first pipe 660 is provided with a water outlet 610, and the second end is inserted into the first end of the second pipe 670; the first end of the third pipe 680 is sleeved on the second end of the second pipe 670, and the second end is provided with a water inlet 620.

[0167] Specifically, the first pipeline 660, the second pipeline 670 and the third pipeline 680 are slidably connected in sequence, and the shape of the end for water flow to enter is trumpet-shaped, which plays a guiding role when the water flows in.

[0168] The first pipeline 660, the second pipeline 670 and the third pipeline 680 are slidably connected in sequence, so that the telescopic pipeline can be extended or shortened.

[0169] As an implementation manner, the opening direction of the water outlet 610 is arranged along the axial direction of the first pipeline 660 .

[0170] Specifically, when the opening direction of the water outlet 610 is set along the axial direction of the first pipeline 660, when the water supply pipe 600 is not in use, the first pipeline 660 and the second pipeline 670 are retracted in the third pipeline 680; when the water supply pipe 600 is used, the first pipeline 660 can be driven upward manually or by other driving equipment to extend the second pipeline 670, and the second pipeline 670 can be driven upward to extend the third pipeline 680. At this time, the telescopic pipe is extended to the longest state, and water continues to spray out from the water outlet 610 of the first pipeline 660.

[0171] As another implementation, see Figure 17 and Figure 18 The opening direction of the water outlet 610 is set at an angle to the axial direction of the first pipeline 660.

[0172] Specifically, when the opening direction of the water outlet 610 is set at an angle to the axial direction of the first pipeline 660, when the water supply pipe 600 is not needed, the first pipeline 660 and the second pipeline 670 are scaled in the third pipeline 680; when the water supply pipe 600 is needed, water flows in from the water inlet 620 of the third pipeline 680 and flows upward along the telescopic pipe. When the water flows to the water retaining wall 640 at the top of the first pipeline 660, the first pipeline 660 is pushed upward under the action of water pressure, and the first pipeline 660 moves upward and extends out of the second pipeline 680. Pipeline 670; when the first pipeline 660 moves to a certain position, under the action of water pressure, the first pipeline 660 pushes the second pipeline 670 upward, and the second pipeline 670 moves upward and extends out of the third pipeline 680. At this time, the telescopic pipe is extended to the longest state, and water continues to spray out from the water outlet 610 of the first pipeline 660; when the water flow stops, under the action of gravity, the second pipeline 670 and the first pipeline 660 will automatically fall down. At this time, the second pipeline 670 and the first pipeline 660 are all retracted into the third pipeline 680.

[0173] By utilizing gravity and water pressure, the telescopic pipe automatically extends to supply water to the upper spray arm 200 when water is sprayed out, and automatically retracts after the water flow stops. No additional complex mechanical structure is required to drive it, the structure is simple, and the internal space of the dishwasher is saved when it is retracted.

[0174] In an optional scheme of an embodiment of the present invention, a first limit platform 661 is provided on the outer wall of the second end of the first pipeline 660, and a first blocking platform 671 is provided on the inner wall of the first end of the second pipeline 670. When the telescopic pipe is extended, the first limit platform 661 abuts against the first blocking platform 671; and / or, a second limit platform 672 is provided on the outer wall of the second end of the second pipeline 670, and a second blocking platform 681 is provided on the inner wall of the first end of the third pipeline 680. When the telescopic pipe is extended, the second limit platform 672 abuts against the second blocking platform 681.

[0175] Specifically, the first limit platform 661 and the first resistance platform 671 are used to abut against each other between the first pipeline 660 and the second pipeline 670 to limit the movement distance of the first pipeline 660 when it is extended; or, the second limit platform 672 and the second resistance platform 681 are used to abut against each other between the second pipeline 670 and the third pipeline 680 to limit the movement distance of the second pipeline 670 when it is extended; or, the first limit platform 661 and the first resistance platform 671 are used to abut against each other between the first pipeline 660 and the second pipeline 670 to limit the movement distance of the first pipeline 660 when it is extended, and at the same time, the second limit platform 672 and the second resistance platform 681 are used to abut against each other between the second pipeline 670 and the third pipeline 680 to limit the movement distance of the second pipeline 670 when it is extended. In this embodiment, a structure is adopted between two adjacent pipelines in which the outer wall of the pipeline with a small diameter is provided with a limit platform, and the inner wall of the pipeline with a large diameter is provided with a resistance platform, so as to limit the highest position of the upward movement of the pipeline. Please refer to Figures 19 to 24 When the first stop 661 of the first pipe 660 abuts the first resistance platform 671 of the second pipe 670, due to the restriction of the first resistance platform 671, the first pipe 660 will drive the second pipe 670 to move upward together under the action of the water pressure; when the second stop 672 of the second pipe 670 abuts the second resistance platform 681 of the third pipe 680, due to the restriction of the second resistance platform 681, the second pipe 670 reaches the highest position; at this time, the telescopic pipe is extended to its longest state, and water continues to spray out from the water outlet 610 at the top of the first pipe 660.

[0176] The abutment between the limit platform and the blocking platform can limit the upward movement distance of the small-diameter pipeline, thereby preventing the small-diameter pipeline from being separated from the large-diameter pipeline and failing to guide the flow normally.

[0177] In an optional scheme of an embodiment of the present invention, a first limit platform 661 is provided on the outer wall of the second end of the first pipeline 660, and a first stop platform 673 is provided on the inner wall of the second end of the second pipeline 670. When the telescopic pipeline is shortened, the first limit platform 661 abuts against the first stop platform 673; and / or, a second limit platform 672 is provided on the outer wall of the second end of the second pipeline 670, and a second stop platform 682 is provided on the inner wall of the second end of the third pipeline 680. When the telescopic pipeline is shortened, the second limit platform 672 abuts against the second stop platform 682.

[0178] Specifically, the first pipeline 660 and the second pipeline 670 utilize the first limit platform 661 and the first stop platform 673 to abut against each other to limit the movement distance of the first pipeline 660 when it retracts; or, the second pipeline 670 and the third pipeline 680 utilize the second limit platform 672 and the second stop platform 682 to abut against each other to limit the movement distance of the second pipeline 670 when it retracts; or, the first pipeline 660 and the second pipeline 670 utilize the first limit platform 661 and the first stop platform 673 to abut against each other to limit the movement distance of the first pipeline 660 when it retracts, and at the same time, the second pipeline 670 and the third pipeline 680 utilize the second limit platform 672 and the second stop platform 682 to abut against each other to limit the movement distance of the second pipeline 670 when it retracts. In this embodiment, a structure is adopted between two adjacent pipelines in which the outer wall of the small-diameter pipeline is provided with a limit platform, and the inner wall of the large-diameter pipeline is provided with a stop platform, so as to limit the lowest position of the downward movement of the pipeline. Please refer to Figures 19 to 24 When the water flow stops, due to the action of gravity, the first pipeline 660 and the second pipeline 670 will automatically fall down, the first limit platform 661 of the first pipeline 660 abuts against the first stop platform 673 of the second pipeline 670, and the second limit platform 672 of the second pipeline 670 abuts against the second stop platform 682 of the third pipeline 680.

[0179] The abutment between the limit platform and the stop platform can limit the downward movement distance of the small-diameter pipe, thereby preventing the small-diameter pipe from detaching from the large-diameter pipe and failing to extend normally when subsequent water flows in.

[0180] Example 2:

[0181] The dishwasher provided in the embodiment of the present invention includes the spray system described in the first embodiment, and therefore also has all the beneficial effects of the first embodiment, which will not be described in detail here.

[0182] In an optional solution of an embodiment of the present invention, the dishwasher further includes a housing 900, a first rack 710, a second rack 720 and a spray arm holder 800; the housing 900 is provided with a cavity for accommodating the first rack 710, the second rack 720 and the spray arm holder 800; the spray arm holder 800 is provided on the bottom wall of the cavity, and the first rack 710 and the second rack 720 are both provided in the cavity and are spaced apart along the height direction of the cavity; the lower spray arm 100 of the spray system is installed on the spray arm holder 800, and the upper spray arm 200 is installed on the first rack 710.

[0183] Specifically, the first shelf 710 is mounted above the second shelf 720, and the upper spray arm 200 is mounted on the first shelf 710. Furthermore, the first shelf 710 includes a connecting section in the form of an arc, the radius of which is the same as the radius of the fixing slot 511. When the fixing member 510 is installed on the first shelf 710, the connecting section snaps into the fixing slot 511 of the fixing member 510, thereby securing the upper spray arm 200 to the first shelf 710. Furthermore, the arc-shaped connecting section increases the contact area with the fixing slot 511, enhancing the installation stability of the spray arm.

[0184] The lower spray arm 100 is installed on the spray arm seat 800 so that the lower spray arm 100 can be connected to the water source.

[0185] In an optional solution of the embodiment of the present invention, an avoidance hole is provided at a position corresponding to the second rack 720 and the first pipe 110 of the lower spray arm 100 ; or, the water supply pipe 600 of the spray system is installed on the second rack 720 .

[0186] Specifically, when the spray system does not include the water supply pipe 600, an avoidance hole is provided at the position corresponding to the second shelf 720 and the first pipe 110 of the lower spray arm 100; when the spray system includes the water supply pipe 600, the mounting seat 650 of the water supply pipe 600 is clamped at the position corresponding to the second shelf 720 and the first pipe 110 of the lower spray arm 100.

[0187] The second shelf 720 is provided with an avoidance hole to prevent the water source from being blocked by the second shelf 720; the mounting seat 650 of the water supply pipe 600 is clamped on the second shelf 720, and the water supply pipe 600 can move together with the second shelf 720, and the installation and removal of the water supply pipe 600 are convenient.

[0188] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A spray system, characterized in that: include: a lower spray arm (100) and an upper spray arm (200); The lower spray arm (100) is installed below the upper spray arm (200), and an upper spray arm water inlet is provided on the lower surface of the upper spray arm; The lower spray arm (100) is configured to be in communication with a water source and to guide the water flow to the water inlet of the upper spray arm; The spray system further comprises a water supply pipe (600); the water supply pipe (600) is respectively connected to the lower spray arm (100) and the upper spray arm (200); The water supply pipe (600) is provided with a water outlet (610) and a water inlet (620) at both ends thereof; The water inlet (620) is located at the end of the water supply pipe (600) close to the lower spray arm (100); The opening direction of the water outlet (610) is arranged at an angle to the axial direction of the water supply pipe (600), and the water supply pipe (600) comprises a connecting column (630) and a water retaining wall (640); One end of the connecting column (630) is connected to the water supply pipe (600), and the other end is connected to the water retaining wall (640); the gap between the water supply pipe (600) and the water retaining wall (640) forms the water outlet (610); The water supply pipe (600) is configured as a telescopic pipe; one end of the telescopic pipe is provided with the water inlet (620), and the side wall of the other end is provided with the water outlet (610).

2. The spray system according to claim 1, characterized in that: The lower spray arm (100) is provided with a first pipe (110) and a second pipe (120); when the dishwasher is in operation, at least one of the first pipe (110) and the second pipe (120) is connected to a water source; When the first pipe (110) is connected to the water source, water flows into the upper spray arm (200) and drives the upper spray arm (200) to rotate; When the second pipe (120) is connected to a water source, the water flow drives the lower spray arm (100) to rotate.

3. The spray system according to claim 2, characterized in that: The spray system further includes a water distribution plate (300); The water dividing plate (300) is provided with a first regulating hole (310) and a second regulating hole (320); When the first pipe (110) is connected to the first regulating hole (310), the first pipe (110) is connected to the water source; When the second pipe (120) is in communication with the second regulating hole (320), the second pipe (120) is in communication with the water source.

4. The spray system according to claim 3, characterized in that: The second pipe (120) is sleeved on the outside of the first pipe (110), with a gap (130) left between the two; When the gap (130) is connected to the second adjustment hole (320), water flow drives the lower spray arm (100) to rotate.

5. The spray system according to claim 1, characterized in that: The spray system further comprises a connecting component and a fixing component (500); The fixing assembly (500) is rotatably connected to the upper spray arm (200) via the connecting assembly, and the fixing assembly (500) is used to be connected to the first shelf (710).

6. The spray system according to claim 5, characterized in that: The connecting assembly comprises a mounting portion (210) and a connecting buckle (410), wherein the mounting portion (210) is provided on the upper spray arm (200); The connecting buckle (410) is connected to the mounting portion (210), and a portion of the structure of the fixing assembly (500) is located between the connecting buckle (410) and the mounting portion (210).

7. The spray system according to claim 6, characterized in that: The connecting buckle (410) and the mounting portion (210) are detachably connected via a first clamping structure.

8. The spray system according to claim 6, characterized in that: The fixing assembly (500) includes a fixing member (510) and a fixing nut (520); The fixing nut (520) is located between the connecting buckle (410) and the mounting portion (210), and is rotatably connected to the mounting portion (210); One end of the fixing member (510) is sleeved on the connecting buckle (410) and connected to the fixing nut (520), and the other end is used to connect to the first shelf (710).

9. The spray system according to claim 8, characterized in that: The fixing member (510) and the fixing nut (520) are detachably connected via a second clamping structure.

10. The spray system according to claim 8, characterized in that: The fixing member (510) is provided with a fixing groove (511), and the fixing groove (511) extends along the circumference of the fixing member (510); The fixing groove (511) is used to connect with the first shelf (710).

11. The spray system according to any one of claims 1 to 10, characterized in that: A flow guide portion (220) is provided on one side of the upper spray arm (200), and the flow guide portion (220) is provided with a flow guide channel (221) communicating with the water inlet of the upper spray arm; The cross-sectional size of the guide channel (221) gradually increases from an end close to the upper spray arm (200) to an end away from the upper spray arm (200).

12. The spray system according to claim 1, characterized in that The water supply pipe (600) further includes a mounting seat (650); The mounting seat (650) is provided at one end of the water supply pipe (600) close to the lower spray arm (100); The end surface of the mounting seat (650) away from the water outlet (610) is provided with a mounting groove for connecting to the second shelf (720).

13. The spray system according to claim 1, wherein: The water supply pipe (600) is rod-shaped, and is provided with the water inlet (620) at one end and the water outlet (610) at the other end.

14. The spray system according to claim 1, wherein: The telescopic pipe comprises a first pipeline (660), a second pipeline (670) and a third pipeline (680); The first end of the first pipeline (660) is provided with the water outlet (610), and the second end of the first pipeline (660) is inserted into the first end of the second pipeline (670); The first end of the third pipeline (680) is sleeved on the second end of the second pipeline (670), and the second end of the third pipeline (680) is provided with the water inlet (620).

15. The spray system according to claim 14, characterized in that The outer wall of the second end of the first pipeline (660) is provided with a first limit platform (661), and the inner wall of the first end of the second pipeline (670) is provided with a first blocking platform (671), and when the telescopic pipe is extended, the first limit platform (661) abuts against the first blocking platform (671); and / or, A second limiting platform (672) is provided on the outer wall of the second end of the second pipeline (670), and a second blocking platform (681) is provided on the inner wall of the first end of the third pipeline (680). When the telescopic pipe is extended, the second limiting platform (672) abuts against the second blocking platform (681).

16. The spray system according to claim 14, characterized in that A first limiting platform (661) is provided on the outer wall of the second end of the first pipeline (660), and a first stopping platform (673) is provided on the inner wall of the second end of the second pipeline (670), and when the telescopic pipeline is shortened, the first limiting platform (661) abuts against the first stopping platform (673); and / or, A second limiting platform (672) is provided on the outer wall of the second end of the second pipeline (670), and a second stopping platform (682) is provided on the inner wall of the second end of the third pipeline (680). When the telescopic pipeline is shortened, the second limiting platform (672) abuts against the second stopping platform (682).

17. A dishwasher, characterized in that: It comprises a housing (900), a first shelf (710), a second shelf (720), a spray arm seat (800), and a spray system according to any one of claims 1 to 16; The housing (900) is provided with a cavity for accommodating the first shelf (710), the second shelf (720) and the spray arm seat (800); The spray arm seat (800) is provided on the bottom wall of the cavity, and the first shelf (710) and the second shelf (720) are both provided in the cavity and spaced apart along the height direction of the cavity; The lower spray arm (100) of the spray system is installed on the spray arm seat (800), and the upper spray arm (200) is installed on the first shelf (710).

18. The dishwasher according to claim 17, characterized in that A avoidance hole is provided at a position of the second shelf (720) corresponding to the first pipe (110) of the lower spray arm (100); Alternatively, the water supply pipe (600) of the spray system is installed on the second shelf (720).

Images