Spraying device and dishwasher

Abstract

This utility model relates to the field of dishwasher technology, specifically providing a spraying device and a dishwasher, aiming to solve the problems of limited spraying range, resulting in insufficient washing and low washing efficiency in existing systems. To this end, the spraying device of this utility model includes a spray base, a spray arm, a drive arm, a fixed gear, a first transmission gear, a gear transmission assembly, and a transmission shaft. The drive arm is configured to rotate horizontally and is rotatably mounted on the spray base, while the spray arm is rotatably mounted on the drive arm. The fixed gear is fixedly sleeved on the spray base, the first transmission gear meshes with the fixed gear, one end of the first transmission gear is connected to the transmission shaft, and the gear transmission assembly is connected to the other end of the transmission shaft. The transmission shaft passes through and is rotatably mounted on the drive arm, while the gear transmission assembly is fixedly mounted on the spray arm. This utility model achieves non-concentric rotation of the spray arm and drive arm to realize an elliptical spray trajectory, increasing the spraying range and improving the washing effect.

Description

Technical Field

[0001] This utility model relates to the field of dishwasher technology, specifically providing a spraying device and a dishwasher. Background Technology

[0002] Dishwashers are common kitchen appliances in households, used to automatically clean vegetables, fruits, dishes, and other items. The spray system is a crucial component of a dishwasher; water is sprayed from the spray system to apply detergent and cleaning fluid to the surface of the dishes, cleaning away stains and achieving a clean result.

[0003] Most existing dishwashers have a single-layer spray mechanism. Due to the single-layer structure, the rotation range of the spray mechanism is circular, which limits the spray range and results in some dishes not being washed thoroughly, leaving residue or grease on the dishes. At the same time, the single-layer spray arm has low washing efficiency and long washing time, which cannot meet the fast pace of modern life.

[0004] Furthermore, to address the problem of low washing efficiency in single-layer spray arms, a double-layer spray mechanism has been disclosed in the prior art. Although this double-layer spray mechanism has spray holes on each layer of spray arms, which increases the number of spray holes and improves the washing effect to some extent, each layer of spray arms rotates concentrically, around the center line of the same fixed axis. This means that the rotation range of the spray mechanism is still circular, which limits its range. This will also lead to some dishes not being washed thoroughly, leaving residue or oil stains on the dishes, and will also increase water consumption, wasting water resources.

[0005] Accordingly, a new technical solution is needed in this field to solve the above-mentioned technical problems. Utility Model Content

[0006] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem that the spray range of the existing spraying mechanism is limited, resulting in insufficient washing and low washing efficiency.

[0007] In a first aspect, the present invention provides a spraying device, comprising: a spraying base, a spraying arm, a driving arm, a fixed gear, a first transmission gear, a gear transmission assembly, and a transmission shaft; the spraying base is fixedly disposed, the driving arm is rotatably disposed on the spraying base, and the spraying arm is rotatably disposed on the driving arm; the fixed gear is fixedly sleeved on the spraying base, the first transmission gear meshes with the fixed gear, the first transmission gear is connected to one end of the transmission shaft, the gear transmission assembly is connected to the other end of the transmission shaft, the transmission shaft passes through and is rotatably disposed on the driving arm, and the gear transmission assembly is fixedly disposed on the spraying arm; the driving arm is configured to rotate horizontally to drive the first transmission gear to rotate relative to the spraying base, and under the action of the gear transmission assembly, drive the spraying arm to rotate relative to the driving arm, thereby achieving non-concentric rotation of the spraying arm and the driving arm.

[0008] In a specific embodiment of the above-mentioned spraying device, the bottom of the drive arm is eccentrically provided with a downwardly extending shaft channel, and the fixed gear and the spraying seat are rotatably sleeved on the shaft channel.

[0009] In a specific embodiment of the above-mentioned spraying device, the shaft channel is provided with a positioning port that cooperates with the spraying seat.

[0010] In a specific embodiment of the above-mentioned spraying device, the drive arm is provided with a first fluid channel and a drive hole that communicate with each other with the shaft channel. The first fluid channel is located inside the drive arm, and the drive hole is located on the end side of the drive arm. The shaft channel is configured to supply fluid to the first fluid channel, so that the fluid can be sprayed out through the drive hole to drive the drive arm to rotate horizontally.

[0011] In a specific embodiment of the above-mentioned spraying device, the spraying arm is provided with a second fluid channel and a spray hole that are connected to each other with the shaft channel. The second fluid channel is located inside the spraying arm, and the spray hole is located at the top of the spraying arm. The shaft channel is configured to supply fluid to the second fluid channel so that the fluid can be sprayed out through the spray hole.

[0012] In a specific embodiment of the above-mentioned spraying device, the spraying device further includes: an intermediate transmission gear and an intermediate transmission shaft. The intermediate transmission gear is rotatably mounted on the intermediate transmission shaft. The intermediate transmission gear is meshed with the fixed gear and the first transmission gear respectively. The intermediate transmission shaft is fixedly mounted on the drive arm.

[0013] In a specific embodiment of the above-mentioned spraying device, the gear transmission assembly includes a second transmission gear and a third transmission gear. The second transmission gear is connected to the other end of the transmission shaft, and the third transmission gear is fixedly mounted on the spraying arm. The second transmission gear and the third transmission gear are meshed together.

[0014] In a specific embodiment of the above-mentioned spraying device, the spraying device further includes: a first limiting component, the first limiting component including a limiting plate, a first limiting seat and a first limiting member, the first limiting seat being fixedly disposed at the end of the drive arm, the limiting plate being rotatably disposed at the end of the spraying arm, and the first limiting member being fixedly disposed at the end of the spraying arm. By rotating the limiting plate, the limiting plate can be placed on the first limiting member or can be locked on the first limiting seat.

[0015] In a specific embodiment of the above-mentioned spraying device, the spraying device further includes: a second limiting component, the second limiting component including a second limiting seat and a second limiting member, the second limiting member being rotatably disposed on the side of the drive arm, the second limiting seat being fixedly disposed on the side of the spraying arm, and the second limiting member being rotated so that the second limiting member can engage with the second limiting seat.

[0016] In a second aspect, the present invention also provides a dishwasher, the dishwasher including the spraying device as described above.

[0017] By adopting the above technical solution, the present invention drives the spray arm to rotate horizontally, the first transmission gear rotates relative to the spray seat, and drives the spray arm to rotate relative to the drive arm under the action of the gear transmission assembly, so that the spray arm and the drive arm achieve non-concentric rotation, thereby making the spray trajectory elliptical. Compared with the existing single-layer spray structure, the spray range is increased and the washing effect is improved.

[0018] Furthermore, by setting a first limiting component and a second limiting component, the first limiting component and the second limiting component have the function of installation positioning, so as to ensure the installation position between the spray arm and the drive arm. When the spray device needs to be disassembled and reinstalled, it is avoided that the two will affect the spraying effect due to improper installation. Attached Figure Description

[0019] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0020] Figure 1 This is a schematic diagram of the installation structure of the spray device of this utility model;

[0021] Figure 2 This is a schematic diagram of the gear transmission structure in the spraying device of this utility model;

[0022] Figure 3 This is another structural schematic diagram of the spray device of this utility model; (spray base omitted)

[0023] Figure 4 This is a cross-sectional view of the spraying device of this utility model;

[0024] Figure 5 This is a schematic diagram of the spray trajectory of the spray device of this utility model.

[0025] The components include: 1. Sprayer seat; 2. Drive arm; 21. Shaft channel; 211. Positioning port; 22. First fluid channel; 23. Drive hole; 3. Spray arm; 31. Second fluid channel; 32. Spray hole; 4. Fixed gear; 5. Intermediate transmission gear; 6. Intermediate transmission shaft; 7. First transmission gear; 8. Transmission shaft; 9. Gear transmission assembly; 91. Second transmission gear; 92. Third transmission gear; 921. Central shaft; 10. First limiting assembly; 101. Limiting plate; 102. First limiting seat; 103. First limiting member; 11. Second limiting assembly; 111. Second limiting seat; 112. Second limiting member; 12. Inner liner. Detailed Implementation

[0026] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. For example, although the spray device of this application is described in conjunction with a dishwasher, the technical solution of the present invention is not limited thereto, and the spray device can obviously also be used in other devices besides dishwashers; such changes do not depart from the principles and scope of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific applications.

[0027] It should be noted that in the description of this utility model, terms such as "inner," "lower," "top," and "end," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the relevant device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, ordinal numbers such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] like Figures 1-2 As shown, the spraying device includes a spray base 1, a spray arm 3, a drive arm 2, a fixed gear 4, a first transmission gear 7, an intermediate transmission gear 5, an intermediate transmission shaft 6, a gear transmission assembly 9, and a transmission shaft 8. The spray base 1 is fixedly mounted on the inner tub 12 of the dishwasher. The drive arm 2 is rotatably mounted on the spray base 1, and the spray arm 3 is rotatably mounted on the drive arm 2. The fixed gear 4 is fixedly sleeved on the spray base 1. The intermediate transmission gear 5 is rotatably mounted on the intermediate transmission shaft 6, which is fixedly mounted on the drive arm 2. The intermediate transmission gear 5 is positioned between the fixed gear 4 and the first transmission gear 7 and meshes with both. The first transmission gear 7 is connected to one end of the transmission shaft 8. The gear transmission assembly... 9 is connected to the other end of the drive shaft 8, which is rotatably mounted on the drive arm 2. The gear transmission assembly 9 is fixedly mounted on the spray arm 3. The drive arm 2 is configured to rotate horizontally to drive the intermediate transmission gear 5 to rotate relative to the spray seat 1. Since the intermediate transmission gear 5 is meshed with the fixed gear 4 and the first transmission gear 7 respectively, it can transmit power to the first transmission gear 7 while the intermediate transmission gear 5 is rotating relative to the spray seat 1, so that the first transmission gear 7 also rotates relative to the spray seat 1. The first transmission gear 7 transmits power to the gear transmission assembly 9 through the drive shaft 8, and under the action of the gear transmission assembly 9, it drives the spray arm 3 to rotate relative to the drive arm 2, so that the spray arm 3 and the drive arm 2 achieve non-concentric rotation.

[0030] It should be noted that although the above description is based on the configuration of intermediate transmission gear 5 and intermediate transmission shaft 6, this is not restrictive. Under the condition of reasonable layout of overall structural dimensions, if the fixed gear 4 can directly mesh with the first transmission gear 7, the intermediate transmission gear 5 and intermediate transmission shaft 6 can be omitted, so that the fixed gear 4 and the first transmission gear 7 can directly transmit power.

[0031] like Figure 3As shown, the drive arm 2 and the spray arm 3 are configured as arm-shaped structures. The length of the drive arm 2 is shorter than the length of the spray arm 3. A downwardly extending shaft channel 21 is provided at an eccentric position on the right side of the bottom of the drive arm 2. The fixed gear 4 and the spray seat 1 are rotatably sleeved on the shaft channel 21. A positioning port 211 that mates with the spray seat 1 is provided at the lower part of the shaft channel 21 to facilitate the positioning and installation of the shaft channel 21 and the spray seat 1.

[0032] It should be noted that although the above description is based on the fixed gear 4 being fixedly sleeved on the spray seat 1, at which time the spray seat 1 is rotatably sleeved on the shaft channel 21, this is not a limitation. The fixed gear 4 and the spray seat 1 can also be set separately, and the fixed gear 4 can be fixedly connected to the spray seat 1, with the fixed gear 4 rotatably sleeved on the shaft channel 21.

[0033] like Figure 4 As shown, the shaft channel 21 has a hollow internal structure. The drive arm 2 is equipped with a first fluid channel 22 and a drive hole 23 that communicate with the shaft channel 21. The first fluid channel 22 is located inside the drive arm 2, and the drive hole 23 is located on the side of the right end of the drive arm 2. During spraying, as shown by the arrow in the figure, the washing liquid is pumped into the shaft channel 21 by a water pump, enters the first fluid channel 22, and is sprayed out through the drive hole 23. This allows the drive hole 23 to generate a reverse force on the drive arm 2 while simultaneously spraying the washing liquid, driving the drive arm 2 to rotate horizontally in the opposite direction to the washing liquid spray. Figure 2 For example, as the washing liquid is sprayed out, it drives the drive arm 2 backward, causing the drive arm 2 to rotate horizontally in a clockwise direction. It should be noted that the rotation direction of the drive arm 2 described above is merely exemplary; if the drive hole 23 is located at... Figure 2 On the opposite side of the center position, the washing liquid drives the drive arm 2 backward as it is sprayed out, causing the drive arm 2 to rotate horizontally in a counterclockwise direction. The specific rotation direction of the drive arm 2 is determined according to the actual setting position of the drive hole 23, as long as the drive arm 2 can rotate horizontally.

[0034] It should be noted that although the above is achieved by setting a separate drive hole 23 for the reverse force, this is not a limitation. Those skilled in the art can also directly set a drive mechanism to achieve this, so that the drive end of the drive mechanism is connected to the shaft channel 21.

[0035] Continue as Figure 4As shown, the spray arm 3 is provided with a second fluid channel 31 and spray holes 32 that are connected to the shaft channel 21. The second fluid channel 31 is located inside the spray arm 3, and the spray holes 32 are located at the top of the spray arm 3. The shaft channel 21 is configured to supply fluid to the second fluid channel 31, allowing the fluid to be sprayed out through the spray holes 32. During spraying, as shown by the arrow in the figure, the washing liquid is pumped into the shaft channel 21 by the water pump, enters the second fluid channel 31, and is sprayed out through the spray holes 32, causing the washing liquid to spray upwards. Under the rotation of the spray arm 3 and the drive arm 2, the washing liquid can cover the entire cavity of the dishwasher. It should be noted that this utility model does not limit the number, size, or spacing of the spray holes 32 on the spray arm 3; specific data can be set by those skilled in the art in actual application.

[0036] Furthermore, it should be noted that the fluid described in this invention is in conjunction with the washing liquid, which can be a mixture of detergent and water, or a direct aqueous solution. Of course, if the spray device is used in equipment other than a dishwasher, the fluid can also be a mist or other similar fluid.

[0037] For example Figure 2 As shown, the gear transmission assembly 9 includes a second transmission gear 91 and a third transmission gear 92. The second transmission gear 91 is connected to the other end of the transmission shaft 8, and the third transmission gear 92 is fixedly mounted on the spray arm 3. The second transmission gear 91 and the third transmission gear 92 are meshed together. Specifically, the third transmission gear 92 is a ring gear. The second transmission gear 91 meshes with the inner circumference of the ring gear. A central shaft 921 is located at the center of the ring gear. One end of the central shaft 921 is fixedly connected to the spray arm 3, and the other end is rotatably connected to the drive arm 2. The central shaft 921 is located at an eccentric position on the spray arm 3. When the drive arm 2 rotates horizontally, the first transmission gear 7 transmits power to the second transmission gear 91 through the transmission shaft 8, causing the second transmission gear 91 to move in a ring motion along the inner circumference of the ring gear, thereby driving the spray arm 3 to rotate horizontally around the central shaft 921 of the ring gear. It should be noted that although the above description is based on the third transmission gear 92 being a ring gear, so that the second transmission gear 91 is meshed with the inner circumference of the ring gear, this is not a limitation. Those skilled in the art can also set the third transmission gear 92 as a non-ring gear, so that the second transmission gear 91 is meshed with the outer circumference of the third transmission gear 92.

[0038] like Figures 1-4As shown, the spraying device also includes a first limiting assembly 10, which includes a limiting plate 101, a first limiting seat 102, and a first limiting member 103. The first limiting seat 102 is fixedly disposed at the end of the drive arm 2, the limiting plate 101 is rotatably disposed at the end of the spraying arm 3, and the first limiting member 103 is fixedly disposed at the end of the spraying arm 3. By rotating the limiting plate 101, the limiting plate 101 can be placed on the first limiting member 103 or locked onto the first limiting seat 102. Specifically, the first limiting assembly 10 is located away from the rotation center of the drive arm 2 and the spraying arm 3, and the first limiting member 103 is configured as a hook-shaped structure. When the spraying device is assembled, the limiting plate 101 is rotated to lock onto the first limiting seat 102. When the spraying device is in operation, the limiting plate 101 is rotated to place on the first limiting member 103, so that the spraying arm 3 and the drive arm 2 can rotate relative to each other.

[0039] like Figure 3 As shown, the spraying device also includes a second limiting assembly 11, which includes a second limiting seat 111 and a second limiting member 112. The second limiting member 112 is rotatably disposed on the side of the drive arm 2, and the second limiting seat 111 is fixedly disposed on the side of the spraying arm 3. The second limiting member 112 can be engaged with the second limiting seat 111 by rotating the second limiting member 112. Specifically, the second limiting assembly 11 is disposed on the side, the second limiting member 112 is configured as a snap-ring structure, and the second limiting seat 111 is configured to cooperate with the snap-ring structure. When the spraying device is assembled, the second limiting member 112 can be engaged with the second limiting seat 111 by rotating the second limiting member 112. When the spraying device is in operation, the second limiting member 112 can be separated from the second limiting seat 111 by rotating the second limiting member 112, so that the spraying arm 3 and the drive arm 2 can rotate relative to each other.

[0040] It should be noted that although the above description combines the simultaneous setting of "first limiting component 10 + second limiting component 11", this is not restrictive. Those skilled in the art can selectively set only the first limiting component 10 or the second limiting component 11 as needed. Of course, to ensure the actual effect, it is preferable to set the first limiting component 10 and the second limiting component 11 simultaneously.

[0041] In the above structure, the first limiting component 10 and the second limiting component 11 have the function of installation and positioning to ensure the installation position between the spray arm 3 and the drive arm 2. When the spray device needs to be disassembled and reinstalled, it is to avoid the situation where the two affect the spraying effect due to improper installation.

[0042] Specifically, the working principle of the spraying device will be explained in detail below:

[0043] When the spray device is working, the washing liquid is pumped into the shaft channel 21 by the water pump. A portion of it enters the first fluid channel 22 and is sprayed out through the drive hole 23. This causes the drive hole 23 to spray the washing liquid while simultaneously generating a reverse force on the drive arm 2, driving the drive arm 2 to rotate horizontally in the opposite direction to the washing liquid spray. Then, it drives the intermediate transmission gear 5 to rotate relative to the spray seat 1. Since the intermediate transmission gear 5 is meshed with the fixed gear 4 and the first transmission gear 7 respectively, it can transmit power to the first transmission gear 7 while rotating relative to the spray seat 1, causing the first transmission gear 7 to also rotate relative to the spray seat 1. Next, the first transmission gear 7 transmits power to the second transmission gear 91 through the transmission shaft 8, causing the second transmission gear 91 to move in a ring along the inner circumference of the third transmission gear 92, thereby driving the spray arm 3 to rotate horizontally around the central axis 921 of the third transmission gear 92. Simultaneously, the washing liquid is pumped into the shaft channel 21 by the water pump, and another portion enters the second fluid channel 31 and is sprayed out through the spray hole 32, causing the washing liquid to spray upwards. Under the combined rotation of the spray arm 3 and the drive arm 2, the washing liquid is sprayed, covering the entire cavity of the dishwasher. Since the drive arm 2 rotates horizontally around the spray base 1, and the spray arm 3 rotates horizontally around the third transmission gear 92, the central axes 921 of the spray base 1 and the third transmission gear 92 are not on the same straight line. This causes the spray arm 3 and the drive arm 2 to rotate non-concentrically, resulting in an elliptical spray trajectory (e.g., ...). Figure 5 As shown in the figure, compared with the existing single-layer spray structure, the spray range is increased and the washing effect is improved.

[0044] Based on the above embodiments, the present invention also provides a dishwasher, which includes the spraying device as described above.

Claims

1. A spraying device, characterized in that, The spraying device includes: Sprayer base (1), spray arm (3), drive arm (2), fixed gear (4), first transmission gear (7), gear transmission assembly (9) and transmission shaft (8); The spray base (1) is fixedly installed, the drive arm (2) is rotatably installed on the spray base (1), and the spray arm (3) is rotatably installed on the drive arm (2). The fixed gear (4) is fixedly sleeved on the spray seat (1), the first transmission gear (7) meshes with the fixed gear (4), the first transmission gear (7) is connected to one end of the transmission shaft (8), the gear transmission assembly (9) is connected to the other end of the transmission shaft (8), the transmission shaft (8) passes through and is rotatably mounted on the drive arm (2), and the gear transmission assembly (9) is fixedly mounted on the spray arm (3); The drive arm (2) is configured to rotate horizontally to drive the first transmission gear (7) to rotate relative to the spray seat (1), and under the action of the gear transmission assembly (9), drive the spray arm (3) to rotate relative to the drive arm (2), so that the spray arm (3) and the drive arm (2) achieve non-concentric rotation.

2. The spraying device according to claim 1, characterized in that, The bottom of the drive arm (2) is eccentrically provided with a downwardly extending shaft channel (21), and the fixed gear (4) and the spray seat (1) are rotatably sleeved on the shaft channel (21).

3. The spraying device according to claim 2, characterized in that, The shaft channel (21) is provided with a positioning port (211) that cooperates with the spray seat (1).

4. The spraying device according to claim 3, characterized in that, The drive arm (2) is provided with a first fluid channel (22) and a drive hole (23) that communicate with the shaft channel (21). The first fluid channel (22) is located inside the drive arm (2), and the drive hole (23) is located on the end side of the drive arm (2). The shaft channel (21) is configured to supply fluid to the first fluid channel (22), so that the fluid can be ejected through the drive hole (23) to drive the drive arm (2) to rotate horizontally.

5. The spraying device according to claim 3, characterized in that, The spray arm (3) is provided with a second fluid channel (31) and a spray hole (32) that are connected to the shaft channel (21). The second fluid channel (31) is located inside the spray arm (3), and the spray hole (32) is located at the top of the spray arm (3). The shaft channel (21) is configured to supply fluid to the second fluid channel (31) so that the fluid can be sprayed out through the spray hole (32).

6. The spraying device according to any one of claims 1-5, characterized in that, The spraying device also includes: The intermediate transmission gear (5) and the intermediate transmission shaft (6) are provided. The intermediate transmission gear (5) is rotatably mounted on the intermediate transmission shaft (6). The intermediate transmission gear (5) is meshed with the fixed gear (4) and the first transmission gear (7) respectively. The intermediate transmission shaft (6) is fixedly mounted on the drive arm (2).

7. The spraying device according to any one of claims 1-5, characterized in that, The gear transmission assembly includes: The second transmission gear (91) and the third transmission gear (92) are connected to the other end of the transmission shaft (8), and the third transmission gear (92) is fixedly mounted on the spray arm (3). The second transmission gear (91) and the third transmission gear (92) are meshed together.

8. The spraying device according to any one of claims 1-5, characterized in that, The spraying device also includes: The first limiting component (10) includes a limiting plate (101), a first limiting seat (102), and a first limiting member (103). The first limiting seat (102) is fixedly disposed at the end of the drive arm (2). The limiting plate (101) is rotatably disposed at the end of the spray arm (3). The first limiting member (103) is fixedly disposed at the end of the spray arm (3). By rotating the limiting plate (101), the limiting plate (101) can be placed on the first limiting member (103) or can be locked on the first limiting seat (102).

9. The spraying device according to any one of claims 1-5, characterized in that, The spraying device also includes: The second limiting component (11) includes a second limiting seat (111) and a second limiting member (112). The second limiting member (112) is rotatably disposed on the side of the drive arm (2), and the second limiting seat (111) is fixedly disposed on the side of the spray arm (3). By rotating the second limiting member (112), the second limiting member (112) can be engaged with the second limiting seat (111).

10. A dishwasher, characterized in that, The dishwasher includes a spray device as described in any one of claims 1-9.

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