Spraying arm mechanism and dish washing machine

Abstract

The utility model relates to the technical field of dish washing machines, in particular to a spraying arm mechanism and a dish washing machine, the spraying arm mechanism comprises a water cup and a spraying arm, the water cup is provided with a first water outlet, the spraying arm is provided with a first water inlet, and the first water outlet and the first water inlet are communicated through a washing pump assembly; the washing pump assembly is used for enabling water in a water cup to enter the spraying arm, the spraying arm is connected with a motor assembly, and the motor assembly is used for driving the spraying arm to rotate; the motor assembly comprises a driving motor, an output shaft of the driving motor is connected with the spraying arm, and the driving motor rotates to drive the spraying arm to rotate. Due to the fact that the spraying arm is connected with the motor assembly, the motor assembly is used for driving the spraying arm to rotate, the rotating speed of the spraying arm can be adjusted by adjusting the motor assembly, the spraying arm is made to wash a certain position in a directional mode, and therefore the cleaning effect of the dish washing machine is better.

Description

Technical Field

[0001] The present disclosure relates to the technical field of dishwashers, and in particular to a spray arm mechanism and a dishwasher. Background Art

[0002] With the development of the economy and the progress of society, dishwashers are gradually becoming intelligent. Using a dishwasher to wash tableware can save personal time. Dishwashers have strong decontamination ability and can completely eliminate bacteria on the surface of tableware. In principle, a dishwasher is a device that uses a nozzle to spray high-pressure washing water to clean tableware. A dishwasher generally includes a dishwasher inner tank that forms a washing chamber, a tableware inlet at the front of the inner tank, a door body is provided at the tableware inlet, and a tableware rack, a spraying device, etc. are provided in the washing chamber.

[0003] The spray arm is an important component inside the dishwasher. It is a water flow spraying assembly inside the dishwasher. Water flows from the inner water pipe into the spray arm and directly cleans the tableware. Currently, dishwashers have higher and higher requirements for the cleanliness of tableware, and a large part of the cleanliness of tableware is determined by the spray arm. When the dishwasher is cleaning, tap water enters the inner tank of the tableware container cavity through the inlet valve after being energized by the pressure. There is a washing pump at the bottom of the inner tank that is connected to the inner tank. The washing pump is energized to pump water into the spray arm connected to the container cavity. The spray arm rotates continuously to spray water on the tableware, and the dirt on the tableware slides off into the cavity under the impact of the water flow. After that, the sewage is treated by the filtration system and re-enters the washing pump. After circulating many times, the dirt is washed off into the water. The sewage is discharged outside the dishwasher cavity through the drainage pump, and then water is inlet, washed, and drained. After circulating many times, the tableware is cleaned.

[0004] Existing spray arms basically rotate driven by water flow. The utility model with the patent number ZL202222417063.X discloses a spray arm device and its dishwasher. The spray arm device includes: a spray arm seat having a cavity, a water inlet, an upper mounting hole, and a lower mounting hole; a drive assembly including a driver and a transmission member, the transmission member is rotatably arranged at the lower mounting hole, and the output end of the driver is connected to the transmission member; a gear assembly including a driving wheel and a satellite wheel having a central hole, the driving wheel is rotatably arranged in the cavity, the satellite wheel is rotatably arranged in the cavity and the upper mounting hole, the satellite wheel is in transmission connection with the transmission member through the driving wheel, and the central hole communicates with the cavity; the spray arm body is in transmission connection with the satellite wheel, and the spray arm body has a plurality of spray holes arranged at intervals, and each spray hole communicates with the central hole respectively. The spray arm device of this utility model can supply water to the spray arm body through the spray arm seat and the satellite wheel in sequence, expanding the cleaning coverage area. However, the above utility model drives the rotation of the spray arm seat through the cooperation of the drive assembly and the gear assembly. The gear assembly has a complex structure, a relatively high later maintenance cost, and excessive noise during operation, which to a certain extent affects the user experience. Summary of the Utility Model

[0005] In view of the deficiencies or problems existing in the prior art, the present disclosure provides a spray arm mechanism and a dishwasher, and the structure of the spray arm mechanism is simpler and the maintenance cost is lower.

[0006] The technical solution adopted by the present disclosure to solve the above technical problems is: a spray arm mechanism, including a water cup and a spray arm. The water cup is provided with a first water outlet, and the spray arm is provided with a first water inlet. The first water outlet and the first water inlet are connected through a washing pump assembly. The washing pump assembly is used to make the water in the water cup enter the spray arm. The spray arm is connected with a motor assembly, and the motor assembly is used to drive the spray arm to rotate.

[0007] As a preferred embodiment, the motor assembly includes a driving motor, and the output shaft of the driving motor is connected to the spray arm. The driving motor rotates to drive the spray arm to rotate.

[0008] As a preferred embodiment, the spray arm includes an upper shell and a lower shell. The upper shell is provided with a limiting post with an opening downward. A connecting shaft is arranged between the driving motor and the upper shell. One end of the connecting shaft is arranged in the limiting post, and the other end of the connecting shaft is connected to the output shaft of the driving motor. The connecting shaft rotates together with the driving motor, and the rotation of the connecting shaft drives the spray arm to rotate.

[0009] As a preferred embodiment, the lower shell is provided with a first joint, and the first water inlet is arranged at one end of the first joint. The first joint is connected to the washing pump assembly.

[0010] As a preferred embodiment, a second joint is arranged on the water cup. The first joint is arranged above the second joint, and the first joint is connected to the second joint. The washing pump assembly is provided with a water outlet channel, and the water outlet channel is located below the second joint and is connected to the second joint.

[0011] As a preferred embodiment, the washing pump assembly includes a pump body and a first pipeline. The pump body includes an inlet cavity and an outlet cavity that are communicated with each other. The inlet cavity is provided with a second water inlet, and the second water inlet and the first water outlet are connected through the first pipeline. The water outlet channel is arranged in the outlet cavity.

[0012] As a preferred embodiment, the driving motor is arranged below the water outlet channel. A through hole is arranged at the bottom of the water outlet channel, and the output shaft of the driving motor passes through the through hole and is connected to the connecting shaft.

[0013] As a preferred embodiment, the water cup further includes a third joint. The inner peripheral wall of the third joint is provided with a first limiting member, and the first limiting member is used to limit the circumferential direction of the connecting shaft. The upper part of the third joint is connected to the first joint, and the lower part of the third joint is connected to the second joint.

[0014] As a preferred embodiment, the connecting shaft includes a first section and a second section. The first section is located above the second section. A first connecting section is provided at the upper part of the first section, and at least a part of the first connecting section is located in the limiting post. A hollow slot is provided at the bottom of the second section along the length direction of the connecting shaft. A second connecting section is provided on the output shaft of the driving motor, and at least a part of the second connecting section is located in the slot.

[0015] As a preferred embodiment, a thickened section is provided at the lower part of the second section. The size of the thickened section is larger than that of other parts of the second section, and the slot is provided in the thickened section.

[0016] As a preferred embodiment, the size of the first section is smaller than that of the second section. The first limiting member includes an annular body and at least two columnar bodies. One end of the columnar body is connected to the inner peripheral wall of the third joint, and the other end is connected to the outer peripheral wall of the annular body. The first section passes through the annular body. The inner diameter of the annular body is adapted to the size of the first section, and the lower end of the annular body is close to the connection between the first section and the second section.

[0017] Another object of the present disclosure is to provide a dishwasher, including the above-mentioned spray arm mechanism.

[0018] Compared with existing products, since the spray arm is connected with a motor assembly which is used to drive the spray arm to rotate, the rotation speed of the spray arm can be adjusted by adjusting the motor assembly, and the spray arm can be oriented to wash a certain position, so that the cleaning effect of the dishwasher is better; the motor assembly drives the spray arm to rotate, with low noise, more stable movement, and the motor structure is simpler, more convenient to maintain and lower in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following will further describe the present application in detail with reference to the drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are only drawn for the purpose of explaining the preferred embodiments and should not be used as a limitation to the scope of the present application. In addition, unless otherwise specified, the drawings only schematically show the composition or structure of the described object and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0020] Figure 1 is a schematic structural diagram of a spray arm mechanism of the present disclosure;

[0021] Figure 2 is an exploded view of a spray arm mechanism of the present disclosure;

[0022] Figure 3 is a cross-sectional view of a spray arm mechanism of the present disclosure;

[0023] Figure 4 is the present disclosure Figure 3 a partial enlarged view at A in;

[0024] Figure 5 is a schematic structural diagram of the third joint of the present disclosure;

[0025] Figure 6 is a schematic structural diagram of the connecting shaft of the present disclosure.

[0026] Description of the reference numerals:

[0027] 1. Spray arm; 2. Water cup; 3. Washing pump assembly; 4. Driving motor; 5. Second water inlet; 6. First water outlet; 7. First joint; 8. Second joint; 9. Third joint; 10. Connecting shaft; 11. Water outlet channel; 12. Second connecting section; 13. Limit post; 14. Columnar body; 15. Annular body; 16. First connecting section; 17. First section; 18. Second section; 19. Thickened section; 20. Slot hole. Detailed implementation manners

[0028] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure will be described in detail, clearly and completely below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not used to limit the present disclosure.

[0029] Those skilled in the art should understand that in the disclosure of the present utility model, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present utility model.

[0030] Please refer to Figure 1 - Figure 2As shown in the figure, the present disclosure provides a spray arm mechanism, which includes a water cup 2 and a spray arm 1. The water cup 2 is provided with a first water outlet 6, and the spray arm 1 is provided with a first water inlet. The first water outlet 6 and the first water inlet are connected through a washing pump assembly 3. The washing pump assembly 3 is used to make the water in the water cup 2 enter the spray arm 1. The spray arm 1 is connected with a motor assembly, and the motor assembly is used to drive the spray arm 1 to rotate. Specifically, a plurality of spray holes are provided on the spray arm 1, and the orientations of these spray holes are almost different from each other, so that the spraying range of the spray arm 1 is wider. The spray arm 1 in this application can be a trident type or a "one" type, and no specific limitation is made here. Since the spray arm 1 is connected with a motor assembly, and the motor assembly is used to drive the spray arm 1 to rotate, the rotation speed of the spray arm 1 can be adjusted by adjusting the motor assembly, and the spray arm 1 can be directed to wash a certain position, so that the spray arm 1 can selectively wash tableware, making the cleaning effect of the dishwasher better; in this application, the motor assembly is used to drive the spray arm 1 to rotate, with low noise, high precision and more stable movement. In addition, the motor structure is simpler, the maintenance is more convenient and the cost is lower.

[0031] Please refer to Figure 3 - Figure 4 As shown in the figure, further, the motor assembly includes a driving motor 4, and the output shaft of the driving motor 4 is connected to the spray arm 1. The rotation of the driving motor 4 drives the spray arm 1 to rotate. Specifically, the spray arm 1 includes an upper shell and a lower shell. The upper shell covers the lower shell and is clamped together to form a spray channel with a hollow interior. The spray holes are arranged on the outside of the upper shell. Water enters the spray channel from the first water inlet and sprays out from the spray holes. A limiting post 13 with an opening downward is arranged on the upper shell. A connecting shaft 10 is arranged between the driving motor 4 and the upper shell. One end of the connecting shaft 10 is arranged in the limiting post 13, and the other end of the connecting shaft 10 is connected to the output shaft of the driving motor 4. The connecting shaft 10 rotates together with the driving motor 4, and the rotation of the connecting shaft 10 drives the spray arm 1 to rotate.

[0032] Furthermore, the lower housing is provided with a first connector 7, the first water inlet is arranged at one end of the first connector 7, and the first connector 7 is connected to the washing pump assembly 3. The water cup 2 is provided with a second connector 8, the first connector 7 is arranged above the second connector 8, the first connector 7 is connected to the second connector 8, the washing pump assembly 3 is provided with a water outlet channel 11, the water outlet channel 11 is located below the second connector 8, and the water outlet channel 11 is connected to the second connector 8. Specifically, the washing pump assembly 3 includes a pump body and a first pipe. The pump body includes an interconnected water inlet cavity and a water outlet cavity. The water inlet cavity is provided with a second water inlet 5, and the second water inlet 5 and the first water outlet 6 are connected by the first pipe. The water outlet channel 11 is arranged in the water outlet cavity. When the pump body works, the water in the water cup 2 enters the water inlet cavity through the first pipe, then enters the water outlet cavity from the water inlet cavity, and then passes through the second connector 8 and the first connector 7 in sequence from the water outlet channel 11, enters the spray channel and finally sprays out from the spray holes. The drive motor 4 is arranged below the water outlet channel 11, a through hole is arranged at the bottom of the water outlet channel 11, and the output shaft of the drive motor 4 passes through the through hole and is connected to the connecting shaft 10. Arranging the drive motor 4 below the water outlet channel 11 saves more space in this way, making the structure of the spray arm mechanism more compact.

[0033] As Figure 2 - Figure 6 shown, in an embodiment of the present disclosure, the water cup 2 further includes a third connector 9. The inner peripheral wall of the third connector 9 is provided with a first limiting member for circumferentially limiting the connecting shaft 10. The upper part of the third connector 9 is connected to the first connector 7, and the lower part of the third connector 9 is connected to the second connector 8. Specifically, the first connector 7 is substantially completely located in the third connector 9, and the lower part of the third connector 9 is located in the second connector 8. Such an arrangement is to ensure better sealing and prevent water leakage during the process of water flowing to the spray arm. The connecting shaft 10 is generally a columnar structure. The connecting shaft 10 includes a first section 17 and a second section 18. The first section 17 is located above the second section 18. The upper part of the first section 17 is provided with a first connecting section 16. The first connecting section 16 is at least partially located in the limiting column 13. The shape of the opening of the limiting column 13 is a waist-shaped hole, and the size and shape of the first connecting section 16 are adapted to the waist-shaped hole. A hollow slot 20 is arranged at the bottom of the second section 18 along the length direction of the connecting shaft 10. The output shaft of the drive motor 4 is provided with a second connecting section 12. The second connecting section 12 is at least partially located in the slot 20. The shape of the slot 20 is non-circular, and the cross-sectional shape of the second connecting section 12 is adapted to the shape of the slot 20. Only when the slot 20 is non-circular can the second connecting section 12 drive the connecting shaft 10 to rotate under the action of the drive motor 4.

[0034] Preferably, in order to strengthen the structural strength of the second section 18, a thickened section 19 is provided at the lower part of the second section 18. The size of the thickened section 19 is larger than that of other parts of the second section 18. The slot hole 20 is provided in the thickened section 19. Since the lower part of the second section 18 is provided with a hollow slot hole 20, the wall thickness of the second section 18 is greatly reduced, which weakens the structural strength of the lower part of the second section 18 to a certain extent. By providing the thickened section 19 at the lower part of the second section 18, the diameter of the lower part of the second section 18 is larger than that of other parts of the second section 18, which increases the wall thickness of the lower part of the second section 18, thereby strengthening and consolidating the structural strength of the second section 18.

[0035] Specifically, the diameter of the first section 17 is smaller than that of the second section 18. The first limiting member includes an annular body 15 and three columnar bodies 14. The three columnar bodies 14 are located at the same horizontal height and are evenly distributed on the inner peripheral wall of the third joint 9. One end of the columnar body 14 is connected to the inner peripheral wall of the third joint 9, and the other end is connected to the outer peripheral wall of the annular body 15. In this way, the annular body 15 is well fixed. The first section 17 passes through the annular body 15, and the inner diameter of the annular body 15 is adapted to the outer diameter of the first section 17, so that the annular body 15 plays a role in circumferential limitation on the first section 17, preventing the connecting shaft 10 from shaking circumferentially during the rotation with the driving motor 4 and affecting the normal operation of the spray arm 1. In addition, the lower end of the annular body 15 is close to the connection part of the first section 17 and the second section 18. Since the diameter of the second section 18 is larger than that of the first section 17, the second section 18 will not enter the annular body 15, which enables the annular body 15 to play a role in axial limitation on the connecting shaft 10 and avoids the upward movement of the connecting shaft 10 during the rotation with the driving motor 4.

[0036] Another embodiment of the present disclosure further provides a dishwasher, including the spray arm mechanism described above.

[0037] The above has introduced the present application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the present application and its core idea. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A spray arm mechanism, characterized in that: The invention comprises a water cup (2) and a spray arm (1), wherein the water cup (2) is provided with a first water outlet (6), and the spray arm (1) is provided with a first water inlet, wherein the first water outlet (6) and the first water inlet are connected via a washing pump assembly (3), wherein the washing pump assembly (3) is used to allow water in the water cup (2) to enter the spray arm (1), and the spray arm (1) is connected to a motor assembly, wherein the motor assembly is used to drive the spray arm (1) to rotate.

2. The spray arm mechanism according to claim 1, characterized in that: The motor assembly comprises a driving motor (4), the output shaft of the driving motor (4) is connected to the spray arm (1), and the driving motor (4) rotates to drive the spray arm (1) to rotate.

3. The spray arm mechanism according to claim 2, characterized in that: The spray arm (1) comprises an upper shell and a lower shell, the upper shell is provided with a limit column (13) with an opening facing downward, a connecting shaft (10) is provided between the drive motor (4) and the upper shell, one end of the connecting shaft (10) is arranged in the limit column (13), the other end of the connecting shaft (10) is connected to the output shaft of the drive motor (4), the connecting shaft (10) rotates with the drive motor (4), and the rotation of the connecting shaft (10) drives the spray arm (1) to rotate.

4. The spray arm mechanism according to claim 3, characterized in that: The lower shell is provided with a first joint (7), the first water inlet is provided at one end of the first joint (7), and the first joint (7) is connected to the washing pump assembly (3); a second joint (8) is provided on the water cup (2), the first joint (7) is provided above the second joint (8), the first joint (7) is connected to the second joint (8), and the washing pump assembly (3) is provided with a water outlet channel (11), the water outlet channel (11) is located below the second joint (8), and the water outlet channel (11) is connected to the second joint (8).

5. The spray arm mechanism according to claim 4, characterized in that: The washing pump assembly (3) comprises a pump body and a first pipeline, the pump body comprising a water inlet chamber and a water outlet chamber which are interconnected, the water inlet chamber being provided with a second water inlet (5), the second water inlet (5) and the first water outlet (6) being connected via a first pipeline, and the water outlet channel (11) being provided in the water outlet chamber.

6. The spray arm mechanism according to claim 4, characterized in that: The driving motor (4) is arranged below the water outlet channel (11); a through hole is arranged at the bottom of the water outlet channel (11); and an output shaft of the driving motor (4) passes through the through hole and is connected to the connecting shaft (10).

7. The spray arm mechanism according to claim 4, characterized in that: The water cup (2) further comprises a third joint (9), the inner peripheral wall of the third joint (9) being provided with a first limiting member, the first limiting member being used to limit the circumferential position of the connecting shaft (10), the upper part of the third joint (9) being connected to the first joint (7), and the lower part of the third joint (9) being connected to the second joint (8).

8. The spray arm mechanism according to claim 3, characterized in that: The connecting shaft (10) comprises a first section (17) and a second section (18), the first section (17) being located above the second section (18), a first connecting section (16) being arranged on the upper part of the first section (17), and the first connecting section (16) being at least partially located in the limiting column (13); a hollow slot (20) being arranged at the bottom of the second section (18) along the length direction of the connecting shaft (10), and a second connecting section (12) being arranged on the output shaft of the driving motor (4), and the second connecting section (12) being at least partially located in the slot (20).

9. The spray arm mechanism according to claim 8, characterized in that: The size of the first section (17) is smaller than the size of the second section (18). The first stopper comprises an annular body (15) and at least two columnar bodies (14). One end of the columnar body (14) is connected to the inner circumferential wall of the third joint (9), and the other end is connected to the outer circumferential wall of the annular body (15). The first section (17) passes through the annular body (15). The inner diameter of the annular body (15) is adapted to the size of the first section (17). The lower end of the annular body (15) is close to the connection between the first section (17) and the second section (18).

10. A dishwasher, characterized in that: It comprises a spray arm mechanism as described in any one of claims 1 to 9.

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