Spraying device of dishwasher and dishwasher

Abstract

The application relates to a spraying device of a dish washing machine and the dish washing machine. The spraying device comprises a water supply pipe, a spraying pipe, a spraying nozzle and a water outlet. One end of the spraying pipe is movably connected to the water supply pipe, and the other end of the spraying pipe is provided with the water outlet. When the spraying pipe is in a first position, the spraying pipe is in communication with the water supply pipe. When the spraying pipe is in a second position, the spraying pipe is not in communication with the water supply pipe. The spraying nozzle is installed at the water outlet, and water flow of the spraying pipe changes direction through the spraying nozzle and is sprayed outwards. The technical scheme of the application can improve the cleaning effect and reduce energy consumption.

Description

Technical Field

[0001] This application relates to the field of kitchen appliances, and in particular to a spray device for a dishwasher and a dishwasher. Background Technology

[0002] With the development of kitchen appliance technology and the improvement of people's living standards, dishwashers are gradually entering households. Dishwashers mainly use a spray system to spray water onto the surface of tableware, utilizing the impact of the water and the chemical action of detergent to remove stains, thus achieving the purpose of cleaning tableware. Besides replacing manual labor in cleaning tableware, dishwashers also have advantages such as high cleaning efficiency, sterilization and disinfection, reduced secondary pollution (drying and storage), and water and energy conservation.

[0003] However, existing dishwashers still have some problems when cleaning small-mouthed containers such as cups. For example, although some dishwashers are equipped with dedicated spray nozzles for cleaning small-mouthed containers, the cleaning effect on the inner walls of the cups is still poor. In addition, the cup spray nozzles in existing technology usually cannot be turned on as needed; even if only one cup needs to be cleaned, all the cup spray nozzles need to be activated, resulting in waste of water and energy and high energy consumption. Utility Model Content

[0004] In view of this, this application provides a spraying device for a dishwasher and a dishwasher in order to solve at least one problem existing in the prior art.

[0005] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0006] In a first aspect, embodiments of this application provide a spray device for a dishwasher, comprising:

[0007] Water supply pipes;

[0008] A spray pipe is movably connected to the water supply pipe at one end and has a water outlet at the other end; when the spray pipe is in the first position, the spray pipe is connected to the water supply pipe; when the spray pipe is in the second position, the spray pipe is not connected to the water supply pipe.

[0009] A spray nozzle is installed at the water outlet, and the water flowing through the spray pipe changes direction after passing through the spray nozzle and is sprayed outward.

[0010] In one optional embodiment, the spray pipe is rotatably connected to the water supply pipe and can rotate between the first position and the second position along the axial direction of the water supply pipe.

[0011] In one optional embodiment, the water supply pipe has a first through hole corresponding to the spray pipe. When the spray pipe moves to a first position, water can flow out of the first through hole; when the spray pipe moves to a second position, the first through hole is blocked.

[0012] In one optional embodiment, the spraying device further includes a collar disposed at one end of the spray pipe and sleeved on the water supply pipe, wherein the inner wall of the collar is axially fitted with the outer wall hole of the water supply pipe; the collar forms a water inlet; when the spray pipe moves to the first position, the water inlet at least partially coincides with the first through hole; when the spray pipe moves to the second position, the water inlet is offset from the first through hole.

[0013] In one optional embodiment, at least one of the inner wall of the collar and the outer wall of the water supply pipe is provided with a groove, and the other is provided with a buckle that matches the groove; when the spray pipe moves to at least one of the first position and the second position, the buckle engages with the groove.

[0014] In one optional embodiment, the inner wall of the collar is provided with a first groove and a second groove spaced at a preset angle in the circumferential direction, and the outer wall of the water supply pipe is provided with a buckle that can cooperate with the first groove and the second groove; when the spray pipe moves to the first position, the buckle engages with the first groove; when the spray pipe moves to the second position, the buckle engages with the second groove.

[0015] In one optional embodiment, a control valve is provided between the spray pipe and the water supply pipe, and / or on the spray pipe, the control valve being configured to adjust the on / off state of the spray pipe.

[0016] In one optional embodiment, the spray nozzle is provided with an impeller, and the blades of the impeller are inclined relative to the axial direction of the spray pipe so as to change the spray direction of the water flow sprayed from the outlet.

[0017] In one optional embodiment, the spray nozzle is integrally formed with the impeller; the spray nozzle is sleeved at the outlet of the spray pipe, and the circumferential force generated by the water flow from the outlet on the impeller drives the spray nozzle to rotate relative to the spray pipe.

[0018] Secondly, embodiments of this application provide a dishwasher, including any of the spray devices of the dishwasher described above.

[0019] The dishwasher spray device and dishwasher provided in this application embodiment, by having a spray pipe that can extend into the inner cavity of a cup and spray nozzles on the spray pipe, allows the spray pipe to spray water with continuously changing spray direction within the inner cavity of the cup, improving the cleaning effect on the inner wall of the cup. Furthermore, the connection between the spray pipe and the water supply pipe can be individually adjusted by the position of the spray pipe, allowing selective water supply to the spray pipes that need cleaning the cups, reducing water waste and lowering energy consumption. Therefore, the dishwasher spray device and dishwasher of this application embodiment can improve cleaning effect and reduce energy consumption.

[0020] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0022] Figure 1 Schematic diagram of the spray device for a dishwasher provided in an embodiment of this application. Figure 1 ;

[0023] Figure 2 Schematic diagram of the spray device for a dishwasher provided in an embodiment of this application. Figure 2 ;

[0024] Figure 3 for Figure 1 Cross-sectional view along the AA direction (connected state);

[0025] Figure 4 for Figure 3 A magnified view of a portion of point C in the middle;

[0026] Figure 5 for Figure 2 Cross-sectional view along the BB direction (disconnected state);

[0027] Figure 6 A schematic diagram of the inside of the collar in the spray device of the dishwasher provided in the embodiments of this application;

[0028] Figure 7 This is a schematic diagram of the spray hood in the spray device of the dishwasher provided in an embodiment of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 10. Water supply pipe; 11. First through hole; 12. Buckle; 20. Spray pipe; 21. Water outlet; 30. Spray nozzle; 40. Impeller; 41. Blade; 50. Collar; 51. Water inlet; 52. Elastic protrusion; 53. First slot; 54. Second slot; 55. Connecting part; 56. Sleeving part. Detailed Implementation

[0031] To make the technical solution and beneficial effects of this application more apparent and understandable, a detailed description is provided below by listing specific embodiments. The accompanying drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application pertains.

[0032] In the description of this application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used for the purpose of simplifying the description of this application and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. In other words, they should not be construed as limitations on this application.

[0033] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating the relative importance of the indicated features or the number of indicated technical features. Therefore, a feature specified as "first" or "second" may explicitly include at least one of those features. In the description of this application, "multiple" means at least two, such as two, three, etc.; "several" means at least one, such as one, two, three, etc., unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly defined, the terms "installation," "connection," "linking," "fixing," "setting," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] In this application, unless otherwise expressly defined, the terms "above," "on top of," "over," "above," "below," "below," "below," or "below" for "first feature over second feature" can refer to the first and second features being in direct contact, or to the first and second features being in indirect contact through an intermediate medium. Furthermore, "above," "over," and "below" for "first feature over second feature" can mean the first feature is directly above or diagonally above the second feature, or simply indicates that the horizontal height of the first feature is higher than the horizontal height of the second feature. Similarly, "below," "below," and "below" for "first feature over second feature" can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0036] To fully understand this application, detailed steps and structures will be presented in the following description to illustrate the technical solution of this application. Preferred embodiments of this application are described in detail below; however, in addition to these detailed descriptions, this application may have other implementation methods.

[0037] To address the technical problems in related technologies, this application provides a spray device for a dishwasher.

[0038] refer to Figure 1 and Figure 2 The dishwasher's spray device includes:

[0039] Water supply pipe 10;

[0040] The spray pipe 20 is movably connected at one end to the water supply pipe 10 and has a water outlet 21 at the other end; when the spray pipe 20 is in the first position, the spray pipe 20 is connected to the water supply pipe 10; when the spray pipe 20 is in the second position, the spray pipe 20 is not connected to the water supply pipe 10.

[0041] A spray nozzle 30 is installed at the water outlet 21. Water from the spray pipe 20 changes direction after passing through the spray nozzle 30 and is sprayed outward.

[0042] Understandably, the water supply pipe 10 in this embodiment can be configured to supply water to the spray pipe 20. It is also understood that in other embodiments, the water supply pipe 10 itself can be equipped with spray nozzles to spray water outwards, or to provide cleaning water to other spray components. The spray pipe 20 can be a branch spray pipe, mainly used for cleaning small open containers such as cups.

[0043] Understandably, movable connections can include rotating connections, sliding connections, etc., without specific limitations. The connection between the spray pipe 20 and the water supply pipe 10 can be adjusted by changing the position of the spray pipe 20. The adjustment can be either connecting or blocking the spray pipe 20 and the water supply pipe 10, or adjusting the connection area between the spray pipe 20 and the water supply pipe 10.

[0044] Understandably, the spray nozzle 30 is installed at the outlet 21, and the water flow from the outlet 21 passes through the spray nozzle 30. The shape of the spray nozzle 30 can be hemispherical, conical, or other suitable to facilitate the dispersion and guidance of the water flow. The spray nozzle 30 and the outlet 21 of the spray pipe 20 form a relatively enclosed space. After the water flow is sprayed from the outlet 21, a certain pressure and flow path will be formed inside the spray nozzle 30 to change the direction of the water flow.

[0045] The dishwasher spray device provided in this application embodiment has a spray pipe that can extend into the inner cavity of a cup and a spray nozzle on the spray pipe. This allows the spray pipe to spray water into the inner cavity of the cup, constantly changing the direction of the spray, which improves the cleaning effect on the inner wall of the cup. Furthermore, the connection between the spray pipe and the water supply pipe can be individually adjusted by the position of the spray pipe, allowing water to be selectively supplied to the spray pipe that needs to clean the cup, reducing water waste and lowering energy consumption.

[0046] In some embodiments of this application, the spray pipe is rotatably connected to the water supply pipe and can rotate between the first position and the second position along the axial direction of the water supply pipe.

[0047] This design allows users to control the water flow with simple operations, improving ease of use. For example, if the sprinkler pipe needs to be connected to the water supply pipe, it flips to the first position; otherwise, it flips to the second position. Furthermore, it eliminates the need for additional valves or other components, resulting in lower costs.

[0048] Furthermore, the spray pipe 20 can also have more positions, such as a third position. In the third position, the spray pipe 20 is connected to the water supply pipe 10, but the connecting channel is smaller than in the first position, meaning the flow rate is lower. Similarly, more positions with different flow rates can be provided, allowing users to select different flow rates. Moreover, more positions for the spray pipe 20 also facilitate washing small open containers such as cups using different placement positions.

[0049] In some embodiments of this application, the water supply pipe 10 has a first through hole 11 corresponding to the spray pipe 20. When the spray pipe 20 moves to the first position, the first through hole 11 connects to the spray pipe 20; when the spray pipe 20 moves to the second position, the first through hole 11 is blocked.

[0050] Specifically, the spray pipe 20 intersects the water supply pipe 10 perpendicularly. This facilitates the insertion of the spray pipe 20 into the inverted cup, ensuring that the water flow from the spray pipe 20 thoroughly rinses the inner wall of the cup. In other embodiments, the angle between the spray pipe 20 and the water supply pipe 10 is adjustable; that is, they do not have to be perpendicular. When the cup is not vertically inverted, the angle between the spray pipe 20 and the water supply pipe 10 can be adjusted to ensure that the spray pipe 20 is parallel to the length direction of the cup, ensuring that the water flow thoroughly rinses the inner wall of the cup.

[0051] Understandably, rotation is a simpler and less strenuous method of operation compared to the shape of the water supply pipe 10. It is also understandable that, in other cases, the movement of the sprinkler pipe 20 relative to the water supply pipe 10 can be in other ways besides rotation, such as sliding.

[0052] In some embodiments of this application, reference is made to Figure 3 and Figure 5 The spraying device further includes a collar 50 disposed at one end of the spray pipe 20 and sleeved on the water supply pipe 10, wherein the inner wall of the collar 50 is axially fitted with the outer wall hole of the water supply pipe 10; the collar 50 forms a water inlet 51; when the spray pipe 20 moves to the first position, the water inlet 51 at least partially overlaps with the first through hole 11; when the spray pipe 20 moves to the second position, the water inlet 51 is offset from the first through hole 11.

[0053] Understandably, hole-shaft fit is a common fit in mechanical assembly, in which the two fitting parts can rotate relative to each other.

[0054] Understandably, when the water inlet 51 at least partially overlaps with the first through hole 11, the spray pipe 20 is connected to the water supply pipe 10. When the water inlet 51 is misaligned with the first through hole 11, the spray pipe 20 is not connected to the water supply pipe 10. Thus, the connection between the water supply pipe 10 and the spray pipe 20 can be controlled by designing the shape and size of the first through hole 11 and the water inlet 51. This results in a simple structure and low cost.

[0055] Specifically, the collar 50 includes a connecting part 55 that connects to the spray pipe 20 and a sleeve part 56 that is sleeved on the water supply pipe 10. The connecting part 55 and the sleeve part 56 are located on both sides of the water supply pipe 10, and are rotatably installed on the water supply pipe 10 by closing them together.

[0056] To achieve an adjustable angle between the spray pipe 20 and the water supply pipe 10, the spray pipe 20 and the connecting part 55 can be hinged or other connection methods that allow for an adjustable angle between the spray pipe 20 and the connecting part 55.

[0057] Specifically, refer to Figure 6 The inner wall of the collar 50 is provided with an elastic protrusion 52 adjacent to the water inlet 51; when the spray pipe 20 moves to the second position, the elastic protrusion 52 covers the first through hole 11.

[0058] The elastic protrusion 52 can completely block the first through hole 11 when the spray pipe 20 moves to the second position, reducing water leakage. Specifically, the elastic protrusion 52 can be made of rubber or other elastic materials, and can fit tightly against the first through hole 11.

[0059] In some embodiments of this application, one of the inner wall of the collar 50 and the outer wall of the water supply pipe 10 is provided with at least one slot, and the other is provided with a buckle 12 that matches the slot; when the spray pipe 20 moves to at least one of the first position and the second position, the buckle 12 engages with the slot.

[0060] This ensures that the position of the sprinkler pipe 20 relative to the water supply pipe 10 is more stable, and also allows the user to clearly know that the operation of rotating the sprinkler pipe 20 is in place. For example, when the clip 12 enters the slot, there will be a corresponding sound or vibration, which the user can clearly perceive.

[0061] In some embodiments of this application, reference is made to Figures 3-5 The inner wall of the collar 50 is provided with a first groove 53 and a second groove 54 spaced at a preset angle in the circumferential direction. The outer wall of the water supply pipe 10 is provided with a buckle 12 that can cooperate with the first groove 53 and the second groove 54. When the spray pipe 20 moves to the first position, the buckle 12 is engaged in the first groove 53. When the spray pipe 20 moves to the second position, the buckle 12 is engaged in the second groove 54.

[0062] In this way, whether the water supply pipe 10 and the spray pipe 20 are connected or not, there is a relatively stable position, which improves the reliability of use.

[0063] Specifically, at least one side of the slot wall is inclined outward to facilitate the engagement or disengagement of the latch 12.

[0064] The sloping groove wall design makes the buckle 12 move more smoothly into or out of the slot, reducing operational resistance and improving the user experience.

[0065] In some embodiments of this application, a control valve (not shown in the figure) may be provided between the spray pipe 20 and the water supply pipe 10, and / or on the spray pipe 20, the control valve being configured to adjust the on / off state of the spray pipe 20.

[0066] The connection between the spray pipe 20 and the water supply pipe 10 can be achieved without rotating the spray pipe 20 relative to the water supply pipe 10, but rather by a separate control valve. This simplifies the structure of the spray pipe 20 and / or the water supply pipe 10.

[0067] Specifically, the control valve can be a manually operated regulating valve or a butterfly valve, which can change the connection area between the spray pipe and the water supply pipe, or it can be completely shut off.

[0068] The control valve can also be a stop valve, ball valve, gate valve, etc., which can be used to change the state of connection or blockage between the spray pipe 20 and the water supply pipe 10.

[0069] The control valve can be rotary or push-pull type. Users can adjust the opening degree of the control valve according to actual needs to control the water flow.

[0070] Furthermore, the control valve's operating part can be located in an easily accessible position, either externally or internally within the dishwasher, allowing users to conveniently adjust the valve's opening state. The valve's opening degree can be continuously adjustable or has several fixed settings to meet different cleaning needs.

[0071] In some embodiments of this application, reference is made to Figure 7 The spray nozzle is equipped with an impeller 40, and the blades 41 of the impeller 40 are inclined relative to the axial direction of the spray pipe 20 so that the water flow sprayed from the outlet 21 continuously changes the spray direction as the impeller 40 rotates.

[0072] Understandably, the purpose of the axial tilt of the blades 41 relative to the spray pipe 20 is to generate a circumferential force through the tilt of the blades 41. This causes the blades 41 to generate a rotational force under the impact of the water flow, driving the impeller 40 to rotate. Understandably, this is based on the mechanical principle of action and reaction forces.

[0073] Specifically, refer to Figure 7 The impeller 40 may include a plurality of circumferentially arranged blades 41, all of which are inclined relative to the axial direction of the spray pipe 20 and in the same direction. In this way, the blades 41 can generate sufficient rotational force under the impact of water flow.

[0074] Specifically, the tilt angle of the blades 41 can be adjusted as needed to achieve the best rotation effect. The number, shape, and size of the blades 41 can also be designed according to actual needs to adapt to different water flow conditions and cleaning requirements.

[0075] Specifically, the number of blades can be three. This makes it easier to achieve dynamic balance of the impeller during rotation, reducing vibration and noise. Furthermore, three blades can also reduce water flow disturbance and eddy current formation, improving fluid dynamic efficiency.

[0076] As the impeller 40 rotates, the water jet from the outlet 21 changes direction with the rotation of the impeller 40, thus achieving all-round cleaning of the dishes inside the dishwasher.

[0077] In some embodiments of this application, the spray nozzle 30 is integrally disposed with the impeller 40; the spray nozzle 30 is sleeved at the outlet 21 of the spray pipe 20, and the circumferential component force generated by the water flow sprayed from the outlet 21 on the impeller 40 drives the spray nozzle 30 to rotate relative to the spray pipe 20.

[0078] Understandably, the inner wall of the spray nozzle 30 and the outer wall of the spray pipe 20 are a hole-shaft fit, and are configured as a clearance fit, so the spray nozzle 30 can rotate freely relative to the spray pipe 20.

[0079] Specifically, the integrated design of the impeller 40 and the spray nozzle 30 enables circumferential linkage between the two. Thus, the circumferential force (tangential force) generated by the impeller 40 under the action of water flow is also equivalent to the circumferential force generated by the spray nozzle 30. Therefore, the rotation of the spray nozzle 30 relative to the spray pipe 20 drives the impeller 40 to rotate as well, changing the direction of the sprayed water flow. This integrated design of the impeller 40 and the spray nozzle 30 results in lower manufacturing costs.

[0080] It is understandable that it can also be designed as follows: the impeller 40 is installed on the spray nozzle 30 and forms an axial linkage relationship, for example, keys and keyways are set on the impeller 40 and the spray nozzle 30 respectively.

[0081] During use, when it is necessary to clean the dishes inside the dishwasher, the user can adjust the adjustment mechanism to connect the spray pipe 20 to the water supply pipe 10. Water flows from the water supply pipe 10 into the spray pipe 20, and then sprays out from the outlet 21, impacting the impeller 40 and causing it to rotate. The rotation of the impeller 40 drives the spray nozzles 30 to rotate, causing the water spray direction to continuously change, thereby achieving all-round cleaning of the dishes.

[0082] When the spray pipe 20 is not needed for cleaning, the user can adjust the adjusting component to disconnect the spray pipe 20 from the water supply pipe 10, so that water will not enter the spray pipe 20, thereby saving water resources and improving cleaning efficiency.

[0083] This application also provides a dishwasher, including the spray device of the dishwasher described above.

[0084] Specifically, a dishwasher also includes the dishwasher body, a water pump, a control system, and a dish basket. The dishwasher body provides support and protection for the entire dishwasher, the water pump provides water pressure for the spray system, the control system controls the various functions of the dishwasher, and the dish basket is used to place the dishes to be washed.

[0085] The dishwasher's spray system is installed inside the main body of the dishwasher. The water supply pipe 10 is connected to the water pump to receive the water flow provided by the pump. The spray pipe 20 can be installed in different positions inside the dishwasher to meet the cleaning needs of dishes in different areas. The design of the spray nozzle 30 and impeller 40 allows the water flow to be sprayed in all directions, improving the cleaning effect.

[0086] The control system can control the start and stop of the water pump and the water flow rate, thereby indirectly controlling the working status of the spray device. Users can select different cleaning modes through the dishwasher's control panel, and the control system will adjust the water pump's operating parameters according to the selected mode to achieve cleaning with different intensities and methods.

[0087] The dish rack is removable, allowing users to pull it out of the dishwasher to place dishes and then push it back in for washing. The rack is designed to accommodate different types of tableware, with dedicated areas for bowls, plates, cups, and cutlery.

[0088] During use, the user places the dirty dishes into the dish basket, selects a suitable washing mode, and controls whether the water flow enters the spray pipe 20 by adjusting the position of the spray pipe. For example, if the dirty dishes include small open containers such as cups, the user can select to allow water to enter the spray pipe 20, and then start the dishwasher. The water pump sends water into the water supply pipe 10, and then sprays it out from the spray pipe 20 to clean small open containers such as cups, thereby improving the cleaning effect on small open containers.

[0089] The dishwasher can have multiple spray units, distributed in different locations inside the dishwasher, to improve the cleaning effect on small-mouthed dishes. Each spray unit can be controlled independently, turning on or off as needed.

[0090] The dishwasher provided in this application embodiment has a spray pipe that can extend into the inner cavity of a cup and a spray nozzle on the spray pipe. This allows the spray pipe to spray water with a constantly changing spray direction into the inner cavity of the cup, improving the cleaning effect on the inner wall of the cup. Furthermore, the connection between the spray pipe and the water supply pipe can be individually adjusted by a control component, allowing selective water supply to the spray pipe that needs to clean the cup, reducing water waste and lowering energy consumption.

[0091] It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations of the technical solutions contained in this application. Various modifications and changes can be made to the above embodiments without departing from the scope of this application. Similarly, the various technical features of the above embodiments can be arbitrarily combined to form other embodiments of this application that may not be explicitly described. Therefore, the above embodiments merely illustrate several implementations of this application and do not limit the scope of protection of this patent application.

Claims

1. A spray device for a dishwasher, characterized in that, include: Water supply pipes; The spray pipe is movably connected to the water supply pipe at one end and has a water outlet at the other end. When the spray pipe is in the first position, the spray pipe is connected to the water supply pipe; when the spray pipe is in the second position, the spray pipe is not connected to the water supply pipe. A spray nozzle is installed at the water outlet, and the water flowing through the spray pipe changes direction after passing through the spray nozzle and is sprayed outward.

2. The spray device for a dishwasher according to claim 1, characterized in that, The spray pipe is rotatably connected to the water supply pipe and can rotate between the first position and the second position along the axial direction of the water supply pipe.

3. The spray device for a dishwasher according to claim 2, characterized in that, The water supply pipe has a first through hole corresponding to the spray pipe. When the spray pipe moves to the first position, water can flow out of the first through hole; when the spray pipe moves to the second position, the first through hole is blocked.

4. The spray device for a dishwasher according to claim 3, characterized in that, The spraying device further includes a collar disposed at one end of the spraying pipe and sleeved on the water supply pipe, wherein the inner wall of the collar is axially fitted with the outer wall hole of the water supply pipe; the collar forms a water inlet; when the spraying pipe moves to the first position, the water inlet at least partially coincides with the first through hole; when the spraying pipe moves to the second position, the water inlet is offset from the first through hole.

5. The spray device for a dishwasher according to claim 4, characterized in that, One of the inner wall of the collar and the outer wall of the water supply pipe is provided with at least one groove, and the other is provided with a buckle that matches the groove; when the spray pipe moves to at least one of the first position and the second position, the buckle engages with the groove.

6. The spray device for a dishwasher according to claim 4, characterized in that, The inner wall of the collar is provided with a first groove and a second groove spaced at a preset angle in the circumferential direction, and the outer wall of the water supply pipe is provided with a buckle that can cooperate with the first groove and the second groove; when the spray pipe moves to the first position, the buckle is engaged in the first groove; when the spray pipe moves to the second position, the buckle is engaged in the second groove.

7. The spray device for a dishwasher according to claim 1, characterized in that, A control valve is provided between the spray pipe and the water supply pipe, and / or on the spray pipe, the control valve being configured to adjust the on / off state of the spray pipe.

8. The spray device for a dishwasher according to any one of claims 1-7, characterized in that, The spray nozzle is equipped with an impeller, and the blades of the impeller are inclined relative to the axial direction of the spray pipe so that the water flow sprayed from the outlet changes the spray direction.

9. The spray device for a dishwasher according to claim 8, characterized in that, The spray nozzle is integrally formed with the impeller; the spray nozzle is sleeved at the outlet of the spray pipe, and the circumferential force generated by the water flow from the outlet on the impeller drives the spray nozzle to rotate relative to the spray pipe.

10. A dishwasher, characterized in that, Includes the spray device of the dishwasher according to any one of claims 1-9.

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