A spray structure of a dishwasher

Abstract

This invention discloses a spray structure for a dishwasher, comprising: a water supply component; and a water guiding component that guides the water flow from the water supply component to the spray component. The water guiding component has a guide interface structure that cooperates with the water outlet of the water supply component. The guide interface structure has an outwardly expanding structure that gradually expands from the side away from the water supply component to the side closer to the water supply component. The dishwasher spray structure disclosed in this invention, through the guide interface structure set around the water inlet, provides excellent guidance, reducing the difficulty of coordinating the water guiding component and the water supply component. Guided by the guide interface structure, the water inlet of the water guiding component and the water outlet of the water supply component can efficiently and quickly connect and align. This effectively avoids the problem of inaccurate alignment between the water inlet on the adjustment cover of existing spray structures and the water outlet of the water supply pipe, which leads to the water supply pipe failing to connect with the corresponding water inlet and thus affecting normal use.

Description

Technical Field

[0001] This invention relates to the field of dishwasher technology, and in particular to a spray structure for a dishwasher. Background Technology

[0002] Current dishwashers typically use a rotating sprayer located below or above the entire shelf. Washing water is sprayed from the nozzles of the sprayer to wash the dishes, and the reaction force of the water spray drives the sprayer to rotate, which in turn rotates the washing liquid to spray and wash the dishes throughout the shelf. When the dishes on the shelf are placed off-center or there is a misalignment in the assembly, the center of the opening of the central spray pipe cannot be aligned with the center of the spray arm interface. This incomplete coupling can cause water leakage during operation or prevent the dishwasher door from closing.

[0003] Because the existing central spray pipe and water inlet pipe lack an adjustment mechanism, if the dishes on the shelf are placed off-center or the assembly causes the coupling point between the central spray pipe and the water inlet pipe to be at different heights, the shelf cannot be properly installed in the dishwasher. This can cause water leakage at the coupling point, insufficient water flow preventing the spray from rotating, or reduced washing water volume, resulting in decreased washing performance. Furthermore, it may also prevent the shelf from being pushed into the dishwasher, or prevent the dishwasher door from closing, causing washing water to leak from the door or generating washing steam.

[0004] Patent application number 201810971877.3 discloses a sprayer water-guiding mechanism and a dishwasher, including a spray arm that can be adjusted and moved between multiple different positions; a fixedly installed water supply pipe; and a rotatable water-guiding component installed on the spray arm, which has multiple different water inlets. The water-guiding component can rotate circumferentially relative to the spray arm so that the spray arm is connected to the water supply pipe through the corresponding water inlet on the water-guiding component when it is in different positions. The sprayer water-guiding mechanism disclosed in this application, by setting a sprayer water-guiding mechanism including a rotatable water-guiding mechanism inside the dishwasher, allows the sprayer water-guiding mechanism to adjust its vertical position according to the different dishes in the dishwasher, thereby allowing the shelves inside the dishwasher to be adjusted vertically. However, in the sprayer water-guiding mechanism disclosed in this application, it is difficult to precisely align the water inlet on the water-guiding component with the water inlet nozzle of the water supply pipe. If there is even a slight deviation in their positions, the water supply pipe will not be able to connect with the corresponding water inlet, affecting normal use.

[0005] In view of this, the present invention is hereby proposed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a spray structure for a dishwasher.

[0007] To achieve this objective, according to one aspect of the present invention, the present invention adopts the following technical solution:

[0008] A spray structure for a dishwasher, including

[0009] Water supply components;

[0010] The water intake component guides the water flow from the water supply component to the spray component;

[0011] The water intake component has a guide interface structure that cooperates with the water outlet of the water supply component. The guide interface structure has an outward expansion structure that gradually expands outward from the side away from the water supply component to the side closer to the water supply component.

[0012] Furthermore, the water intake assembly includes an adjusting cover that is sealed to the water inlet end of the spray assembly. The adjusting cover has a water intake hole, and the guide interface structure is disposed on the outer periphery of the water intake hole with its opening facing the water supply assembly.

[0013] Furthermore, the adjusting cover has multiple water inlet holes at different positions, and the outer periphery of each of the multiple water inlet holes is respectively provided with multiple guide interface structures;

[0014] Preferably, the plurality of guide interface structures are connected as one unit and integrally formed with the adjustment cover.

[0015] Furthermore, the guide interface structure includes a connecting portion connected to the circumferential direction of the water inlet hole, and an expanding portion connected to the outer edge of the connecting portion with a gradually increasing inner diameter.

[0016] Furthermore, the water supply component includes a hollow plug portion disposed at the water outlet end of the water supply component that can extend into the guide interface structure, and a sealing ring is provided on the outer periphery of the hollow plug portion.

[0017] Furthermore, the hollow plug-in portion includes a plug section with a constant inner diameter connected to the water supply component, and a guide section with a gradually decreasing inner diameter connected to the end of the plug section. The sealing ring is disposed on the outer peripheral wall of the end of the columnar section near the guide section.

[0018] Furthermore, the water supply assembly includes a water supply pipe, and the hollow connector is a part of the structure of the water supply pipe;

[0019] Alternatively, the water supply assembly includes a water supply pipe and a guide component disposed at the outlet end of the water supply pipe, wherein the hollow plug portion is a part of the structure of the guide component;

[0020] A water outlet is provided on the side wall of the water supply pipe. The water outlet extends inward in a circumferential direction to form a protruding water nozzle. The guide also includes an annular mating surface covering the outer peripheral wall of the water nozzle, and one side of the annular mating surface extends outward to form a mounting part that is installed and fixed on the peripheral wall of the water supply pipe. The other side of the annular mating surface is connected to the outer peripheral edge of the hollow insertion part.

[0021] Furthermore, the water intake assembly also includes a one-way valve structure disposed between the water inlet end of the spray assembly and the regulating cover, the one-way valve structure covering the outer periphery of the regulating cover.

[0022] Furthermore, the one-way valve structure includes a valve seat and a one-way valve plate. The valve seat has multiple mounting holes corresponding to the position of the water inlet hole, and the one-way valve plate is installed in the mounting holes.

[0023] The outer edge of the valve seat extends horizontally towards the direction of the adjusting cover and then bends towards the center of the valve seat to form an accommodating space that can enclose the adjusting cover.

[0024] Furthermore, a sealing element is provided between the guide interface structure and the water inlet connector of the spray assembly, and the sealing element covers at least part of the outer peripheral wall of the guide interface structure.

[0025] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0026] 1. The dishwasher spray structure provided by the present invention has a guide interface structure on the water inlet hole of the adjusting cover. The guide interface structure has an outward expansion structure that gradually expands outward from the side away from the water supply component to the side closer to the water supply component. The guide interface structure plays a good guiding role and reduces the difficulty of matching the adjusting cover with the water outlet end of the water supply component. As long as the water outlet end of the water supply component falls into the internal space range of the guide interface structure, the water inlet hole of the adjusting cover and the water outlet end of the water supply component can be efficiently and quickly matched and connected under the guidance of the guide interface structure. This effectively avoids the phenomenon that the water inlet hole on the adjusting cover of the existing spray structure is difficult to accurately connect with the water outlet end of the water supply component, resulting in the water outlet end of the water supply component and the corresponding water inlet hole not being able to connect.

[0027] 2. The dishwasher spray structure provided by this invention effectively prevents water leakage from the gap between the guide interface structure and the hollow connector by using a sealing ring provided on the outer peripheral wall of the hollow connector at the water outlet end of the water supply component. In this invention, a one-way valve structure is wrapped around the outer periphery of the adjusting cover. This one-way valve structure ensures unidirectional water flow while effectively preventing water leakage from the edges of the adjusting cover, thus providing a certain degree of sealing. Furthermore, a sealing element is provided on the outer peripheral wall of the guide interface structure, sealingly connecting it to the water inlet end of the spray component. This effectively prevents water from flowing out from the gap between the water supply component and the water inlet end of the spray component, improving the overall sealing performance of the spray structure. Attached Figure Description

[0028] Figure 1 Exploded structural diagram of the spray structure in the embodiment of the present invention;

[0029] Figure 2 A cross-sectional view of the spray structure before assembly in an embodiment of the present invention;

[0030] Figure 3 A cross-sectional view of the spray structure after assembly in an embodiment of the present invention;

[0031] Figure 4 A partial structural schematic diagram of the water supply component in an embodiment of the present invention;

[0032] Figure 5 A schematic diagram of the sealing element in an embodiment of the present invention;

[0033] Figure 6 A schematic diagram of the sealing cap and guide interface structure in an embodiment of the present invention;

[0034] Figure 7 A schematic diagram of the one-way valve structure in an embodiment of the present invention;

[0035] in:

[0036] 1. Water supply components;

[0037] 11. Water supply pipe; 111. Water outlet; 112. Third card holder;

[0038] 12. Guide component; 121. Hollow insertion part; 1211. Insertion section; 1212. Guide section; 122. Annular mating surface; 123. Mounting part; 1231. Third slot;

[0039] 13. Sealing ring;

[0040] 2. Water intake components;

[0041] 21. Sealing element; 211. Annular sealing body; 212. Second clamping platform;

[0042] 22. Guided interface structure; 221. Connecting part; 222. Outward expansion part;

[0043] 23. Adjusting cover; 231. Water inlet hole; 232. First clamping platform;

[0044] 24. One-way valve structure; 241. Valve seat; 2411. Valve seat body; 2412. Annular extension surface; 24121. First slot; 2413. Limiting flange; 24131. Annular protrusion; 242. Valve plate;

[0045] 3. Spray system components;

[0046] 31. Center spray pipe;

[0047] 32. Center spray pipe fixing parts;

[0048] 33. Spray arm;

[0049] 34. Water inlet connector; 341. Second slot. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0051] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0052] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0053] like Figures 1 to 7As shown, the present invention provides a spray structure for a dishwasher, comprising: a spray assembly 3, the spray assembly 3 including a spray arm 33 rotatably disposed inside the washing chamber of the dishwasher and capable of spraying washing water onto the dishes in the rack; a water supply assembly 1 connected to a water source to provide spray water to the spray assembly 3; and a water guiding assembly 2 guiding the water flow from the water supply assembly 1 to the spray assembly 3; the water guiding assembly 2 having a guide interface structure 22 that cooperates with the water outlet of the water supply assembly 1, the guide interface structure 22 having an outwardly expanding structure that gradually expands outward from the side away from the water supply assembly 1 to the side closer to the water supply assembly 1. In this invention, the guide interface structure has a trumpet-shaped opening, which plays a good guiding role and reduces the difficulty of matching the water intake component and the water supply component. Under the guidance of the guide interface structure 22, the water intake hole of the water intake component 2 and the water outlet of the water supply component 1 can be efficiently and quickly matched and connected. This effectively avoids the problem that it is difficult to accurately connect the water intake hole and the water outlet of the water supply component 1 in the existing spray structure, which leads to the phenomenon that the water supply component 1 and the corresponding water intake hole cannot be connected.

[0054] Furthermore, combined Figures 1 to 3 , Figure 6 As shown, the water guiding component 2 includes an adjusting cover 23 that is sealed to the water inlet end of the spray component 3. The adjusting cover 23 has a water guiding hole 231, which connects the water outlet end of the water supply component 1 and the water inlet end of the spray component 3, thereby guiding the water in the water supply component 1 to the spray component 3. The guide interface structure 22 is disposed on the outer periphery of the water guiding hole 231. The guide interface structure 22 is a funnel-shaped opening structure, and the opening of the guide interface structure 22 faces the water outlet end of the water supply component 1. The guide interface structure 22 reduces the difficulty of matching the regulating cover 23 with the water outlet of the water supply component 1. As long as the water outlet of the water supply component 1 falls into the internal space of the guide interface structure 22, the water inlet hole 231 of the regulating cover 23 and the water outlet of the water supply component 1 can be efficiently and quickly matched under the guidance of the guide interface structure 22. This effectively avoids the problem that the water inlet hole 231 on the regulating cover 23 of the existing spray structure is difficult to accurately match with the water outlet of the water supply component 1, resulting in the water outlet of the water supply component 1 and the corresponding water inlet hole 231 not being able to connect.

[0055] Furthermore, the adjusting cover 23 has multiple water inlet holes 231 at different positions, so that the water supply component 1 is connected to the spray arm 33 through different water inlet holes 231 on the adjusting cover 23, thereby realizing the movement adjustment of the spray arm 33 between different positions. The outer periphery of the multiple water inlet holes 231 is respectively provided with multiple guide interface structures 22, and the multiple guide interface structures 22 are provided to realize efficient and accurate docking between the water inlet holes 231 at different positions on the adjusting cover 23 and the water outlet end of the water supply component 1.

[0056] Specifically, such as Figures 1 to 3 ,as well as Figure 6 As shown, along the longitudinal direction of the adjusting cover 23, a plurality of water inlet holes 231 are sequentially arranged on the adjusting cover 23. The adjusting cover 23 can move up and down, so that the adjusting cover 23 can be connected to the water outlet end of the water supply component 1 at different positions in the vertical direction. This allows the water supply component 1 to be connected to the spray arm 33 through the water inlet holes 231 at different heights on the adjusting cover 23, thereby realizing the height adjustment of the spray arm 33 at different positions. A plurality of guide interface structures 22 are respectively arranged on the outer periphery of the plurality of water inlet holes 231. Each guide interface structure 22 corresponds to a different height of the shelf. Through the arrangement of the plurality of guide interface structures 22, the water inlet holes 231 at different heights on the adjusting cover 23 can be efficiently and accurately connected to the water outlet end of the water supply component 1.

[0057] Alternatively, in another embodiment, multiple water inlet holes 231 are staggered and dispersed in the longitudinal and transverse directions of the regulating cover 23. The multiple water inlet holes 231 are staggered and distributed at different heights and horizontal positions of the regulating cover 1. The regulating cover 23 can rotate circumferentially relative to the spray arm 33 so that the spray arm 33 can be connected to the water supply component 1 through the water inlet holes 231 of the water inlet components 2 at different positions. Multiple guide interface structures 22 are respectively provided on the outer periphery of the multiple water inlet holes 231. Through the multiple guide interface structures 22, the water inlet holes 231 at different heights and horizontal positions on the regulating cover 23 can be efficiently and accurately connected to the water outlet of the water supply component 1.

[0058] Preferably, the multiple guide interface structures 22 are connected as a single unit, and the integral arrangement of the multiple guide interface structures 22 enhances the stability of the overall structure. More preferably, the multiple guide interface structures 22 and the adjustment cover 23 are integrally formed. The multiple guide interface structures 22 and the adjustment cover 231 can be integrally formed through processes such as injection molding and stamping, which simplifies the forming process and improves the stability of the overall structure.

[0059] Furthermore, such as Figures 1 to 3As shown, the guide interface structure 22 includes a circumferential connecting portion 221 connected to the water inlet hole 231. The connecting portion 221 is a hollow cylindrical structure with a constant inner diameter. The guide interface structure 22 also includes an outwardly expanding portion 222 connected to the outer edge of the hollow cylindrical connecting portion 221, with a gradually increasing inner diameter. The connecting portion 221 is a hollow cylindrical structure, and the outwardly expanding portion 222 has a trumpet-shaped opening. The guide interface structure 22 provided in this application avoids the problem in existing sprinkler water inlet mechanisms where it is difficult to precisely align the water inlet hole on the water inlet assembly with the water outlet end of the water supply assembly. If there is even a slight deviation in their positions, the water supply pipe will not be able to connect with the corresponding water inlet hole, resulting in a lack of communication and affecting normal use. The guide interface structure 22 is a funnel-shaped structure that gradually expands outward toward the water outlet of the water supply component 1. In this way, as long as the water outlet of the water supply component 1 falls into the internal space of the funnel-shaped guide interface structure 22, the water inlet hole 231 of the adjusting cover 23 can efficiently and quickly connect with the water outlet of the water supply component 1.

[0060] Furthermore, the water supply assembly 1 includes a hollow plug-in portion 121 disposed at the water outlet end of the water supply assembly 1, which can extend into the guide interface structure 22. The hollow plug-in portion 121 can pass through the water inlet hole 231 and extend into the water inlet connector 34 of the spray assembly 3 to supply water to the spray arm 33. A sealing ring 13 is provided on the outer periphery of the hollow plug-in portion 121, and the sealing ring 13 is sealed between the outer periphery of the hollow plug-in portion 121 and the inner peripheral wall of the guide interface structure 22. By providing a sealing ring 13 on the outer peripheral wall of the hollow plug-in portion 121 at the water outlet end of the water supply assembly 1, the phenomenon of water leakage from the gap between the guide interface structure 22 and the hollow plug-in portion 121 is effectively prevented.

[0061] Furthermore, combined Figures 1 to 4As shown, the hollow plug-in portion 121 includes a plug section 1211 with a constant inner diameter connected to the water supply assembly 1, and a guide section 1212 with a gradually decreasing inner diameter connected to the end of the plug section 1211. The outer diameter of the plug section 1211 of the hollow plug-in portion 121 matches the inner diameter of the hollow columnar connecting portion 221 of the guide interface structure 22. The sealing ring 13 is disposed on the outer peripheral wall of the end of the plug section 1211 near the guide section 1212 to prevent water entering the spray assembly 3 from flowing out along the gap between the plug section 1211 of the hollow plug-in portion 121 and the connecting portion 221 of the guide interface structure 22, thereby improving the overall sealing performance. By setting the end of the hollow plug-in part 121 as a tapered structure with a gradually decreasing inner diameter, the guide interface structure 22 and the hollow plug-in part 121 can cooperate more efficiently and accurately, playing a certain guiding role. At the same time, it can also increase the water pressure. The inner diameter of the plug section 1211 is larger than the inner diameter of the outlet of the guide section 1212, which reduces the water flow cross section and increases the water flow velocity while keeping the water flow rate constant, thereby increasing the driving force and making it easier to guide the water in the water supply component 1 to the spray component 3.

[0062] Furthermore, the water supply assembly 1 includes a water supply pipe 11, the hollow connector 121 is a partial structure of the water supply pipe 11, the water supply pipe 11 has an outlet, and the hollow connector 12 is formed by extending outward from the outlet of the water supply pipe 11. Alternatively, the water supply assembly 1 includes a water supply pipe 11 and a guide 12 disposed at the outlet end of the water supply pipe 11, the hollow connector 121 is a partial structure of the guide 12, and the guide 12 serves to guide the water flow.

[0063] Specifically, a water outlet is provided on the side wall of the water supply pipe 11. The water outlet extends inward at an inclined circumference to form a protruding water nozzle 111. The guide member 12 also includes an annular mating surface 122 covering the outer peripheral wall of the water nozzle 111, and a mounting part 123 extending outward from one side of the annular mating surface 122 to be installed and fixed on the peripheral wall of the water supply pipe 1. The mounting part 123 covers the outer wall of the water supply pipe 11 near the water nozzle 111. The mounting part 123 has mounting holes and can be installed on the water supply pipe 11 by screws or snap-fit. Figure 4As shown, the mounting hole is a third slot 1231 formed on the wall of the mounting part 123. Multiple protruding third mounting platforms 112 are provided on the pipe wall of the water supply pipe 11 corresponding to the third slot 1231. Through the engagement of the third slot 1231 and the third mounting platforms 112, the guide member 12 and the water supply pipe 11 are connected, making disassembly and installation convenient and quick. The other circumferential edge of the annular mating surface 122 is connected to the outer periphery of the hollow insertion part 121. The guide member 12, by its design, not only guides the water flow but also covers the outer periphery of the outlet 111, effectively preventing water leakage from the edge of the outlet 111.

[0064] When the tableware on the shelf is placed off-center or there is a misalignment in the assembly, the water inlet hole 231 of the water inlet component 2 cannot be aligned with the center of the hollow plug part 121 of the water supply component 1. When the shelf is pushed inward, the guide interface structure 22 is close to the guide member 12 of the water supply component 1 and will be pushed up and down by the lateral force of the guide member 12. This will align the water inlet hole 231 in the center of the guide interface structure 22 with the center of the water outlet end of the water supply component 1, thus avoiding the resistance caused by the off-center movement of the shelf and preventing the shelf from not being able to close properly or causing water leakage.

[0065] Furthermore, such as Figures 1 to 3 ,as well as Figure 7 As shown, the water intake assembly 2 also includes a one-way valve structure 24 disposed between the water inlet end of the spray assembly 3 and the regulating cover 23, realizing one-way flow of water and preventing water entering the spray assembly 3 from flowing back to the water supply assembly 1. The one-way valve structure 24 covers the outer periphery of the regulating cover 23. By covering the regulating cover 23 with the one-way valve structure 24, water will not leak from the edge of the regulating cover 23, thus improving the sealing performance.

[0066] Furthermore, such as Figure 2 , Figure 3 ,as well as Figure 7As shown, the one-way valve structure 24 includes a valve seat 241 and a one-way valve plate 242. The valve seat 241 has a plate-shaped valve seat body 2411 that matches the shape and size of the adjusting cover 23. The valve seat body 2411 is located on the side of the adjusting cover 23 near the spray assembly 3. The valve seat body 2411 has multiple mounting holes corresponding to the positions of the water inlet holes 231. The one-way valve plate 242 is installed in the mounting holes. The fixed end of the one-way valve plate 242 is installed around the mounting holes, and the free end covers the mounting holes and can only be opened towards the water inlet end of the spray arm 33. Under the impact of water flow or the action of external force, the free end of the one-way valve plate 242 opens to conduct water flow. When the hollow plug part 121 of the water supply assembly 1 is inserted into one water inlet hole 231 of the adjusting cover 23, the other water inlet holes 231 are sealed by the one-way valve plate 242 to prevent water from flowing out from the other water inlet holes 231.

[0067] Furthermore, the outer edge of the valve seat body 2411 extends horizontally towards the adjusting cover 23 and then bends towards the center of the valve seat body 2411 to form an accommodating space that can enclose the adjusting cover 23. The adjusting cover 23 is embedded in the accommodating space formed by the valve seat body 2411. Specifically, the outer edge of the valve seat body 2411 extends horizontally towards the adjusting cover 23 to form an annular extending surface 2412. The extension length of the annular extending surface 2412 matches the thickness of the adjusting cover 23. The outer edge of the annular extending surface 2412 bends towards the center of the valve seat body 2411 to form an annular limiting flange 2413. The annular limiting flange 2413 effectively prevents the adjusting cover 23 from detaching from the accommodating space formed by the valve seat body 2411, and further improves the sealing effect, ensuring that the introduced water flow will not leak from the periphery of the adjusting cover 23.

[0068] Furthermore, such as Figure 6 , Figure 7 As shown, a snap-fit ​​structure is provided on the outer periphery of the adjusting cover 23. The snap-fit ​​structure consists of a plurality of first locking platforms 232 provided on the outer peripheral wall of the adjusting cover 23. A plurality of first locking grooves 24121 corresponding to the first locking platforms 232 are provided on the annular extension surface 2412 of the valve seat 241. The adjustment cover 23 and the valve seat 241 are stably engaged through the engagement of the first locking platforms 232 and the first locking grooves 24121. At the same time, the snap-fit ​​engagement method eliminates the need for additional connecting parts, simplifies the components, and makes disassembly and installation more convenient and quick.

[0069] Furthermore, such as Figures 1 to 3 ,as well as Figure 5As shown, a sealing element 21 is provided between the guide interface structure 22 and the water inlet end of the spray assembly 3. The sealing element 21 covers at least part of the outer peripheral wall of the guide interface structure 22. The spray assembly 3 includes a spray arm 33 and a central spray pipe 31. One end of the central spray pipe 31 is connected to the spray arm 33 through a central spray pipe fixing member 32. The other end of the central spray pipe 31 is provided with a water inlet connector 34 that is sealed to the water inlet assembly 2. The water inlet connector 34 has a water inlet opening, and the water inlet assembly 2 is sealed to the water inlet opening. The sealing element 21 has an annular sealing body 211. The inner peripheral wall of the annular sealing body 211 tightly wraps around the outer peripheral wall of the guide interface structure 22 located in the hollow columnar part 221. The outer peripheral wall of the sealing element 21 abuts against the inner wall of the water inlet opening of the water inlet connector 34. The present invention provides a sealing element 21 on the outer peripheral wall of the guide interface structure 22, which is sealed between the outer peripheral wall of the guide interface structure 22 and the water inlet end of the spray assembly 3, thereby preventing water from leaking between the outer peripheral wall of the guide interface structure 22 and the water inlet end of the spray assembly 3, and thus giving the entire spray structure good sealing performance.

[0070] Furthermore, combined Figure 1 , Figure 2 , Figure 5 As shown, the sealing element 21 is provided with a snap-fit ​​structure, and the water inlet connector 34 is provided with a corresponding structure that cooperates with the snap-fit ​​structure. The snap-fit ​​structure includes a plurality of second locking platforms 212 arranged around the outer peripheral wall of the sealing element 21 at intervals, and a plurality of second locking grooves 341 correspondingly provided on the inner peripheral wall of the water inlet connector 34. The sealing element 21 and the water inlet connector 34 are stably fitted together by the cooperation of the second locking platforms 212 and the second locking grooves 341. At the same time, the snap-fit ​​method eliminates the need for additional connecting parts, simplifies the components, and makes disassembly and installation more convenient and quick.

[0071] Preferably, such as Figure 2 , Figure 3 ,as well as Figure 5 As shown, an annular protrusion 24131 is provided on the outer wall surface of the annular limiting flange 2413 of the valve seat body 2411. The annular protrusion 24131 is located at the end of the annular limiting flange 2413. The annular protrusion 24131 abuts against the end face of the annular sealing body 211 near the spray assembly 3. The annular protrusion 24131 prevents water flowing into the spray assembly 3 from flowing out from the gap between the adjusting cover 23 and the sealing member 21, thereby further improving the sealing performance.

[0072] The dishwasher spray structure provided by this invention features a guide interface structure on the water inlet of the adjusting cover. This guide interface structure expands outwards from the side furthest from the water supply component towards the side closest to it. This guide interface structure provides excellent guidance, effectively preventing the difficulty in precisely aligning the water inlet hole on the water inlet component with the water inlet nozzle of the water supply pipe, a problem common in existing spray structures. Even a slight deviation in their positions can cause the water supply pipe to fail to connect with the corresponding water inlet, affecting normal use. With this invention, as long as the water outlet of the water supply pipe falls within the internal space of the guide interface structure, the water inlet of the adjusting cover can efficiently and quickly align with the water outlet of the water supply pipe.

[0073] The implementation schemes in the above embodiments can be further combined or replaced, and the embodiments are merely descriptions of preferred embodiments of the present invention, and are not intended to limit the concept and scope of the present invention. Various changes and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the design concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. A spray structure for a dishwasher, characterized in that: include Water supply components; The water intake component guides the water flow from the water supply component to the spray component; The water intake component has a guide interface structure that cooperates with the water outlet of the water supply component. The guide interface structure has an outward expansion structure that gradually expands outward from the side away from the water supply component to the side closer to the water supply component. The water intake assembly includes an adjustment cover that is sealed to the water inlet end of the spray assembly. The adjustment cover has a water intake hole, and the guide interface structure is disposed on the outer periphery of the water intake hole with the opening facing the water supply assembly. The water intake assembly also includes a one-way valve structure disposed between the water inlet end of the spray assembly and the regulating cover; The one-way valve structure includes a valve seat, the outer edge of which extends horizontally toward the direction of the adjusting cover and then bends toward the center of the valve seat to form an accommodating space that can enclose the adjusting cover therein; The outer edge of the valve seat body extends horizontally towards the adjustment cover to form an annular extension surface. The extension length of the annular extension surface matches the thickness of the adjustment cover. The outer edge of the annular extension surface bends towards the center of the valve seat body to form an annular limiting flange. The sprinkler assembly includes a central water spray pipe, one end of which is provided with a water inlet connector that is sealed to the water intake assembly, the water inlet connector having a water inlet opening; a sealing element is provided between the guide interface structure and the water inlet connector; The sealing element has an annular sealing body, the inner peripheral wall of the annular sealing body is tightly wrapped around the outer peripheral wall of the guide interface structure, and the outer peripheral wall of the sealing element abuts against the inner wall of the water inlet opening of the water inlet connector. The outer wall surface of the annular limiting flange is provided with an annular protrusion, which is located at the end of the annular limiting flange and abuts against the end face of the annular sealing body near the spray assembly.

2. The spray structure of a dishwasher according to claim 1, characterized in that: The adjusting cover has multiple water inlet holes at different positions, and multiple guide interface structures are respectively provided on the outer periphery of the multiple water inlet holes.

3. The spray structure of a dishwasher according to claim 2, characterized in that, The multiple guide interface structures are connected as one unit and integrally formed with the adjustment cover.

4. The spray structure of a dishwasher according to claim 1, characterized in that: The guide interface structure includes a connecting part connected to the water inlet hole in the circumferential direction, and an expanding part connected to the outer edge of the connecting part with a gradually increasing inner diameter.

5. The spray structure of a dishwasher according to any one of claims 1-4, characterized in that: The water supply component includes a hollow plug portion disposed at the water outlet end of the water supply component that can extend into the guide interface structure, and a sealing ring is provided on the outer periphery of the hollow plug portion.

6. The spray structure of a dishwasher according to claim 5, characterized in that: The hollow connector includes a connector section connected to the water supply assembly and a guide section with a gradually decreasing inner diameter connected to the end of the connector section. The sealing ring is disposed on the outer peripheral wall of the end of the columnar section near the guide section.

7. The spray structure of a dishwasher according to claim 5, characterized in that: The water supply component includes a water supply pipe, and the hollow connector is a part of the structure of the water supply pipe. Alternatively, the water supply assembly includes a water supply pipe and a guide component disposed at the outlet end of the water supply pipe, wherein the hollow plug portion is a part of the structure of the guide component; A water outlet is provided on the side wall of the water supply pipe. The water outlet extends inward in a circumferential direction to form a protruding water nozzle. The guide also includes an annular mating surface covering the outer peripheral wall of the water nozzle, and one side of the annular mating surface extends outward to form a mounting part that is installed and fixed on the peripheral wall of the water supply pipe. The other side of the annular mating surface is connected to the outer peripheral edge of the hollow insertion part.

8. The spray structure of a dishwasher according to claim 1, characterized in that: The one-way valve structure includes a one-way valve plate, and the valve seat has multiple mounting holes corresponding to the position of the water inlet hole, and the one-way valve plate is installed in the mounting holes.

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