Water-air distribution valve and dishwasher

Abstract

The application provides a water-air distribution valve and a dishwasher. The water-air distribution valve is applied to the dishwasher. The dishwasher comprises multiple spray arms. The water-air distribution valve comprises a valve shell, a valve core assembly and a driving member. The valve shell has a valve water inlet, a valve air inlet and multiple distribution ports. The valve core assembly comprises a water-air switching member and a fluid distribution member, which are movably arranged in the valve shell. The driving member is in transmission connection with the water-air switching member and the fluid distribution member. In a washing state, the driving member drives the water-air switching member to control the valve air inlet to be cut off from the valve water inlet and all the distribution ports, and drives the fluid distribution member to control the valve water inlet to be switchably communicated with at least one distribution port. In a drying state, the driving member drives the water-air switching member to control the valve air inlet to be communicated with at least one distribution port and / or the valve water inlet, and drives the fluid distribution member to control the valve air inlet to be switchably communicated with at least one distribution port. The embodiment can improve the problem of complex structure and layout of the water-air distribution valve.

Description

Technical Field

[0001] This application relates to the field of dishwasher technology, and more particularly to a water and air distribution valve and a dishwasher. Background Technology

[0002] A dishwasher, as a household appliance that automatically cleans dishes, works by pressurizing water and spraying it through rotating spray arms to create a high-pressure water jet that washes the surface of the dishes, working in conjunction with detergent to remove dirt. To achieve complete cleaning and drying functions, dishwashers typically have washing and drying modes.

[0003] In related technologies, two independent drive systems are typically used. One is dedicated to controlling a water-air switching valve core to achieve mode switching between the washing water circuit and the drying air circuit. The other is dedicated to controlling a fluid distribution valve core to selectively guide water or air flow to different spray arms in a specific mode.

[0004] However, the two drive mechanisms and their associated transmission structures result in a crowded and complex internal layout of the valve body, which not only occupies valuable internal space in the dishwasher but also increases the difficulty of assembly. Utility Model Content

[0005] This application provides a water-gas distribution valve and a dishwasher, aiming to improve the problem of complex structural layout of water-gas distribution valves.

[0006] On one hand, this application provides a water-air distribution valve for use in a dishwasher, the dishwasher including multiple spray arms, the water-air distribution valve including: The valve housing has a valve inlet for receiving washing water, a valve inlet for receiving drying airflow, and multiple branch ports for corresponding communication with the multiple spray arms. The valve core assembly includes a water-air switching element and a fluid distribution element, both movably disposed within the valve housing; and A driving component is connected to both the water-air switching component and the fluid distribution component. In the washing state, the driving component drives the water-air switching component to control the valve air inlet to be isolated from the valve water inlet and all the branch ports, and drives the fluid distribution component to control the valve water inlet to be switchably connected to at least one of the branch ports; in the drying state, the driving component drives the water-air switching component to control the valve air inlet to be connected to at least one of the branch ports and / or the valve water inlet, and drives the fluid distribution component to control the valve air inlet to be switchably connected to at least one of the branch ports.

[0007] In some of these embodiments, it also includes: A transmission mechanism, wherein the driving component is connected to at least one of the water-air switching component and the fluid distribution component via the transmission mechanism.

[0008] In some embodiments, the water-air switching element is movably disposed within the valve housing in a direction away from or close to the valve air inlet, at least for the purpose of controlling the on / off connection between the valve air inlet and all the branch ports and the valve water inlet by means of movement.

[0009] In some embodiments, the fluid distribution element is movably disposed within the valve housing for controlling the communication between the valve inlet and at least one of the diversion ports by movement during the washing state, and for controlling the communication between the valve air inlet and the valve inlet and / or at least one of the diversion ports by movement during the drying state; or The fluid distribution component is rotatably disposed within the valve housing, and is used to control the connection between the valve inlet and at least one of the branch ports by rotation in the washing state, and to control the connection between the valve air inlet and the valve inlet and / or at least one of the branch ports by rotation in the drying state.

[0010] In some embodiments, the water-air switching component includes a first air-blocking component. In the washing state, the first air-blocking component moves to a blocking position that closes the air inlet of the valve, and in the drying state, the first air-blocking component moves to a ventilating position that opens the air inlet of the valve; the fluid distribution component includes a first diverting valve plate, the driving component is a first driving component, and the transmission mechanism includes: The linkage mechanism is located between the first air-blocking component and the first diverting valve plate; The first driving component drives the first diversion valve plate to move, and the first diversion valve plate drives the first air-blocking component to move between the air-blocking position and the air-venting position through the linkage mechanism.

[0011] In some of these embodiments, it also includes: The first elastic element has two ends that abut against the first air-blocking element and the valve body, respectively. When not driven by the first driving member, the first elastic member drives the first air-blocking member to remain in the air-blocking position.

[0012] In some embodiments, the linkage mechanism includes: A hook portion is disposed on one of the first diverter valve plate and the first air-blocking component; and The overlapping portion is provided on the other of the first diversion valve plate and the first air-blocking component; In the washing state, the hook portion and the overlapping portion are spaced apart so that the first elastic member can drive the first air-blocking member to remain in the air-blocking position; in the drying state, the overlapping portion, driven by the first driving member, moves the overlapping portion and the first air-blocking member from the air-blocking position to the ventilated position.

[0013] In some embodiments, the water-air switching component includes a second air-blocking component. In the washing state, the second air-blocking component moves to a blocking position that closes the air inlet of the valve, and in the drying state, the second air-blocking component moves to a ventilating position that opens the air inlet of the valve; the fluid distribution component includes a second diverting valve plate, the driving component is a second driving component, and the transmission mechanism includes: The motion conversion mechanism has its input end connected to the output shaft of the second drive member and its output end connected to the second air-blocking member for transmission, and is used to convert the rotational motion of the second drive member into linear motion. The second driving member drives the second diverter valve plate to rotate, and the motion conversion mechanism drives the second air-blocking member to move between the air-blocking position and the air-venting position.

[0014] In some embodiments, the second drive element includes a motor, and the second diverter valve is sleeved on the output shaft of the motor to drive the second diverter valve to rotate through the output shaft; The motion conversion mechanism includes a lead screw transmission mechanism, which includes a threaded lead screw and a transmission seat. The lead screw is linked to the output shaft of the motor, and the transmission seat is connected to the second air-blocking component to drive the second air-blocking component to move between the air-blocking position and the air-venting position.

[0015] In some embodiments, the valve core assembly includes: The second elastic element has its two ends abutting against the second air-blocking element and the transmission seat respectively, causing the second air-blocking element to tend to move toward the valve inlet.

[0016] In some embodiments, the inner wall of the valve housing and one of the second air-blocking components are provided with a sliding portion, and the other is provided with a limiting slide extending axially parallel to the output shaft, the sliding portion being slidably disposed within the limiting slide.

[0017] In some embodiments, one of the transmission seat and the second air-blocking component is provided with a guide portion, and the other is provided with a guide groove extending axially parallel to the output shaft, wherein the guide portion and the guide groove are slidably engaged relative to each other.

[0018] In some embodiments, the water-air switching component is rotatably disposed on the valve housing along a first direction, for use in rotation to control the on / off connection between the valve air inlet and all the branch ports and the valve water inlet; The fluid distribution component is rotatably disposed on the valve housing at least along a second direction, for controlling the connection between the valve inlet and at least one of the branch ports by rotation in the washing state, and for controlling the connection between the valve air inlet and the valve inlet and / or at least one of the branch ports by rotation in the drying state. The first direction and the second direction are opposite.

[0019] In some embodiments, the water-gas switching component includes a water-gas distribution valve plate, and the fluid distribution component includes a rotary diverter valve plate; the transmission mechanism includes: The one-way transmission mechanism is connected to both the water-air distribution valve plate and the rotating diversion valve plate. In the washing state, the one-way transmission mechanism drives the water-air distribution valve to rotate in the first direction to control the valve air inlet to be isolated from the valve water inlet and all the diversion ports. Then, the one-way transmission mechanism drives the rotating diversion valve to rotate in the second direction to control the valve water inlet to be switchably connected to at least one of the diversion ports, provided that the water-air distribution valve stops rotating. In the drying state, the one-way transmission mechanism drives the water-air distribution valve plate to rotate along the first direction to control the valve air inlet to connect with at least one of the diversion ports and / or the valve water inlet. Then, the one-way transmission mechanism drives the rotating diversion valve plate to rotate along the second direction to control the valve air inlet to switchably connect with at least one of the diversion ports, provided that the water-air distribution valve plate stops rotating.

[0020] In some embodiments, the one-way transmission mechanism includes a ratchet transmission assembly, which is pulsatorically connected to both the water-air distribution valve plate and the rotating diversion valve plate. Alternatively, the one-way transmission mechanism includes a one-way bearing assembly, which is connected in a transmission manner to both the water-air distribution valve plate and the rotating diversion valve plate.

[0021] In some embodiments, the one-way transmission mechanism includes a ratchet drive assembly, the ratchet drive assembly comprising: The ratchet, having an internal gear ring structure, is fixedly connected to the water-air distribution valve plate; and A pawl is located inside the ratchet, and part of its structure protrudes from the ratchet to connect with the rotating diverter valve plate; When the pawl rotates in the first direction, it engages with the ratchet and drives the ratchet to rotate in the first direction, thereby driving the water-air distribution valve plate and the rotating diversion valve plate to rotate in the first direction; when the pawl rotates in the second direction, it disengages from the ratchet and rotates independently of the ratchet in the second direction, thereby driving the rotating diversion valve plate to rotate in the second direction independently.

[0022] On the other hand, embodiments of this application provide a dishwasher, including: The water-air distribution valve described above; The inner liner has a washing chamber for accommodating tableware; A water cup is located below the inner liner and communicates with the washing chamber; A circulating pump, with its inlet end connected to the water cup and its outlet end connected to the valve inlet; Multiple spray arms are disposed within the washing chamber and are connected to each of the multiple diversion ports; and The drying system is connected to the air inlet of the valve and is used to deliver drying airflow to the water-air distribution valve.

[0023] The water-air distribution valve of this embodiment has a valve inlet for receiving washing water circulating externally or internally within the dishwasher, and an air inlet for receiving hot or dry airflow generated by the drying system. Multiple distribution ports are connected one-to-one with multiple spray arms of the dishwasher, ensuring that washing water or dry airflow is precisely delivered to the designated spray arm. This makes the valve housing a multi-functional integrated hub, consolidating the originally separate water, air, and distribution interfaces into one unit.

[0024] The valve core assembly includes a water-air switching component and a fluid distribution component movable within the valve housing. The main function of the water-air switching component is to control the on / off relationship between the valve air inlet, the valve water inlet, and each branch port when switching between washing and drying states, thereby preventing washing water from entering the air path. The fluid distribution component is responsible for selectively connecting the washing water from the valve water inlet or the drying airflow from the valve air inlet to at least one branch port according to a preset control logic during washing or drying states, thereby distributing the water or airflow among different spray arms.

[0025] This embodiment employs a single drive component, which is simultaneously connected to both the water / air switching component and the fluid distribution component, enabling the independent movement of these components. This significantly reduces the number of parts in the entire water / air distribution valve, resulting in a substantial simplification of its structure. This directly reduces the overall size and weight of the valve body, making it easier to fit into the compact installation space inside a dishwasher. This aligns with the trend towards miniaturization and integration in dishwashers. Furthermore, the reduced number of parts lowers assembly complexity and difficulty, improves production efficiency, and further reduces production costs.

[0026] From a logic control perspective, the control unit only needs to issue commands to a single drive component, eliminating the need for complex synchronization control and timing matching of two independent actuators. This reduces the risk of asynchronous actions caused by inconsistent responses from the two drive components, control signal interference, or mechanical transmission errors, thereby effectively avoiding malfunctions such as crosstalk between water and air circuits, valve jamming, or seal failure.

[0027] In terms of cost reduction and energy efficiency improvement, the reduction in the number of drive components directly leads to a decrease in material costs. For example, it saves a motor, the corresponding wiring harness, connectors, and the power devices required to drive the motor. At the same time, due to the simplification of the control circuit, the hardware and software costs of the control unit also decrease accordingly. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of a water cup and a water vapor distribution valve provided in an embodiment of this application; Figure 2 for Figure 1 A schematic diagram of the exploded structure shown; Figure 3 for Figure 1 The diagram shows a cross-sectional view of the structure at the gas-blocking location. Figure 4 for Figure 1 The diagram shows a cross-sectional view of the structure in the ventilated position. Figure 5 This is a schematic diagram of the structure of a water cup and a water vapor distribution valve provided in another embodiment of this application; Figure 6 for Figure 5 A schematic diagram of the exploded structure shown; Figure 7 for Figure 5 The diagram shows a cross-sectional view of the structure at the gas-blocking location. Figure 8 for Figure 5 The diagram shows a cross-sectional view of the structure in the ventilated position. Figure 9 A schematic diagram of the structure of a water cup and a water vapor distribution valve provided in another embodiment of this application; Figure 10 for Figure 9 The diagram shows the exploded structure of the structure in one configuration. Figure 11 for Figure 9 An exploded view of the ratchet drive assembly in the structure shown. Figure 12 for Figure 9 A schematic diagram of the ratchet drive assembly in the structure shown from another angle; Figure 13 for Figure 9 The diagram shows an exploded view of the structure in another configuration.

[0030] Explanation of reference numerals in the attached figures: 10. Water-gas distribution valve; 11. Valve housing; 11a. Diversion port; 111. Main housing; 111a. Valve cavity; 112. Washing water inlet pipe; 112a. Valve inlet; 113. Hot air inlet pipe; 113a. Valve air inlet; 114. Support part; 115. Guide column; 12. Valve core assembly; 121. First diversion valve plate; 121a. First flow port group; 121a1. First flow port; 121b. First valve plate cavity; 1211. Flat plate; 1212. Arc plate; 1212a. First clearance notch; 122. First air-blocking component; 1221. Plug; 1222. Connecting rod; 123. First elastic component; 31. Linkage mechanism; 311. Hook part; 312. Overlap part; 124. Second air-blocking component; 1241. Sealing head; 1241a. Sealing groove; 1242. Guide rod; 1242a. Guide slide groove; 125. Second diversion valve plate; 125a. Second flow port assembly; 125a1. Second flow port; 1251a. Second clearance notch; 126. Second elastic component; 127. Sliding part; 128. First sealing component; 129. Second sealing component; 1291. Distribution valve sealing ring; 1292. Diversion valve sealing ring; 22a. Slot; 22b. Stepped groove; 221. Motor body; 222. Limiting seat; 224. Output shaft; 34. Screw drive mechanism; 341. Screw; 342. Transmission seat; 3421. Transmission rod; 3422. Support platform; 3423. Guide part; 343. Transmission key; 344. Stop part; 111a1, Air inlet valve chamber; 111a2, Water inlet valve chamber; 111a3, Diverter valve chamber; 131, Water-air distribution valve plate; 131a, Third flow port; 132, Fixed valve plate; 132a, Water inlet; 132b, Air inlet; 141, Rotating diverter valve plate; 141a, Fourth flow port; 33. One-way transmission mechanism; 331. Ratchet transmission assembly; 3311. Ratchet; 3311a. Mounting groove; 3311b. Ratchet tooth; 3311c. First outer connecting part; 3312. Pawl; 3313. Pawl seat; 3313a. Inner connecting part; 3314. Elastic element; 3315. Ratchet lower cover; 20. Driving component; 21. First driving component; 22. Second driving component; 72. Water cup. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0032] A dishwasher is an automatic dishwashing device widely used in home and commercial kitchens. It thoroughly cleans and disinfects dishes using high-temperature, high-pressure water jets, detergent, and a circulation system.

[0033] This embodiment proposes a dishwasher (not shown in the figure). The dishwasher has at least two states during operation: washing state and drying state. In the washing state, the dishwasher performs a dynamic water circulation process: water is injected and heated, and then delivered to the dish spraying device through a pressurization system, where it is sprayed out to rinse the dishes. After rinsing, the water falls back and is collected, filtered, and then delivered back to the spraying device for recycling until the washing is complete.

[0034] When the washing cycle ends and the wastewater is discharged, the dishwasher enters the drying cycle. At this point, the system switches its working medium and begins supplying a drying airflow. This airflow is directed to the dish spray device, where it is blown out of its nozzles to create an airflow that sweeps across the surface and interior of the dishes, accelerating moisture evaporation and thus achieving rapid drying.

[0035] In this embodiment, the dishwasher includes a base, an outer shell, and a door. The base is the supporting structure of the dishwasher, usually made of metal, and has good load-bearing capacity and stability. The outer shell is connected to the base and serves as the external protective layer of the dishwasher; it can be made of stainless steel or cold-rolled thin steel sheet. The door is movably connected to the outer shell, for example, by flipping it open and close. The door is the closed structure of the dishwasher, and its perimeter can be connected with sealing strips to prevent moisture leakage. The user places the dishes to be washed into the dishwasher by opening the door. An observation window can be provided on the door, allowing the user to observe the operation of the dishwasher inside when it is closed.

[0036] The dishwasher includes an inner tub and at least one dish rack. The inner tub is located within the outer casing and has a washing chamber for accommodating dishes. The inner tub may be made of thin stainless steel sheet, which has good corrosion resistance and durability. At least one dish rack is retractable into the washing chamber. Multiple dish racks can be arranged at intervals along the height of the dishwasher. The dish racks are used to place dishes to be washed. In use, the user opens the door and pulls outward to place the dish racks to be washed. After placing the dishes, the user pushes the dish racks back into the washing chamber and closes the door.

[0037] To achieve the drying effect, the dishwasher also includes a drying system, which can be located inside the aforementioned base. The drying system includes a heating device and an air supply device. The heating device can be an electric heating element, such as a heating tube or heating block, which can heat the air to the required temperature. The air supply device can be a centrifugal fan or an axial fan, which can drive the airflow.

[0038] Understandably, the above-mentioned setting belongs to the internal circulation drying mode of the dishwasher. In other embodiments, the drying effect can also be achieved by external circulation drying. Specifically, there is no need to set a heating device. Instead, an exhaust port and an exhaust valve are set, and relatively dry air from outside the dishwasher is introduced through a blower. The air pressure inside the washing chamber will increase slightly. At the same time, the newly introduced dry air will compress, mix and push the humid and hot air that was originally in the washing chamber. The humid and hot air is discharged to the outside of the dishwasher through the exhaust port.

[0039] For ease of understanding, this embodiment will use the internal circulation drying mode as an example to describe the working process of the dishwasher in detail. The external circulation drying mode can refer to the same or similar settings.

[0040] like Figure 1 , Figure 5 and Figure 9As shown, in order to achieve an efficient and integrated workflow for the washing and drying states of the dishwasher, the dishwasher also includes a water cup 72, a circulation pump (not shown), a water and air distribution valve 10, and multiple spray arms (not shown). The water cup 72 is located below the inner tub and is connected to the washing chamber. As a water collection and transfer hub of the water system, the water cup 72 can collect water flowing back from the washing chamber during the washing state. The position design of the water cup 72 ensures that the water can flow back naturally by gravity.

[0041] like Figure 1 and Figure 2 As shown, in this embodiment, the water-air distribution valve 10 is a component used to distribute water flow and air flow. The water-air distribution valve 10 has a valve inlet 112a for receiving washing water, a valve inlet 113a for receiving hot air, and multiple diversion ports 11a for corresponding communication with multiple spray arms. The circulation pump is the power source for driving the washing water flow circulation. Its inlet end is connected to the water cup 72, which is responsible for drawing out the water collected in the water cup 72; its outlet end is directly connected to the valve inlet 112a of the water-air distribution valve 10, ensuring that the washing water can be delivered to the spray arms with sufficient pressure during the washing stage to achieve powerful rinsing. It can be understood that the washing water may include water, detergent, or a mixture of water and detergent.

[0042] Understandably, the drying system is connected to the valve inlet 113a of the water-gas distribution valve 10 to deliver drying airflow to the water-gas distribution valve 10. Specifically, the air outlet of the air supply device can be connected to the valve inlet 113a. Hot air driven by the air supply device and heated by the heating device can enter the water-gas distribution valve 10 through the valve inlet 113a, and then be distributed to the corresponding spray arms through different diversion ports 11a.

[0043] Multiple spray arms are the terminal actuators that perform washing and drying tasks. They are located inside the washing chamber and have several spray nozzles. The spray nozzles of different spray arms can face the same direction or different directions. In this embodiment, there is no specific limitation on the direction of the spray nozzles of different spray arms. The multiple spray arms are connected one-to-one with the multiple diversion ports 11a of the water-air distribution valve 10. This one-to-one correspondence allows the water-air distribution valve 10 to precisely control the working state of each spray arm, realizing refined operation of different areas within the washing chamber.

[0044] In one configuration, the spray arm can be fixed. In another, the spray arm can rotate circumferentially in the horizontal plane, that is, around a vertical axis. In yet another configuration, in addition to rotating in the horizontal plane, the spray arm can be designed to produce a certain yaw in the vertical direction (i.e., up and down). This yaw can be active, achieved through a specific drive mechanism; or it can be passive, such as utilizing changes in fluid reaction force or clever counterweight design, so that the spray arm oscillates slightly up and down while rotating. This combined motion can further expand the solid angle of the spray coverage, which is especially beneficial for more effective spraying or blowing on tableware placed at different heights. Furthermore, the spray arm can even be configured to perform reciprocating linear or curvilinear motion along a preset track.

[0045] Regardless of the specific form in which the spray arm is positioned within the washing chamber, whether it is a horizontal rotation, a combined motion with swaying, a stationary motion relying solely on the movement of the internal nozzles, or any other form of motion or posture change, in this embodiment, hot air can be introduced into the spray arm and sprayed out through the spray nozzles of the spray arm.

[0046] In some embodiments, the multiple spray arms include a middle spray arm located in the middle of the inner tank, an upper spray arm located at the top of the inner tank, and a lower spray arm located at the bottom of the inner tank. The lower spray arm sprays water from bottom to top, effectively cleaning the bottom of the tableware and tightly stacked dishes. The middle spray arm is located in the middle of the tableware, and its rotating water flow can penetrate the gaps between the tableware to rinse the sides and central areas of the tableware. The upper spray arm sprays water from top to bottom, specifically responsible for cleaning tableware placed in the upper dish rack. The multiple spray arms allow water to reach any corner of the washing chamber from multiple angles, greatly improving the uniformity and thoroughness of the cleaning and effectively avoiding blind spots.

[0047] The multiple diversion ports 11a include an upper spray arm diversion port 11a, a middle spray arm diversion port 11a, and a lower spray arm diversion port 11a, which correspond one-to-one with the upper spray arm, the middle spray arm, and the lower spray arm. The water-air distribution valve 10 can selectively connect to at least one diversion port 11a. For example, it can simultaneously connect the upper spray arm diversion port 11a and the lower spray arm diversion port 11a, so as to achieve targeted local cleaning through the upper spray arm and the lower spray arm.

[0048] In other embodiments, the number and layout of the spray arms can also be adjusted according to the specific size and design requirements of the inner liner. For example, four spray arms can be set to achieve more precise zone control, which will not be elaborated here.

[0049] Understandably, during the washing cycle, the air inlet 113a of the water-air distribution valve 10 no longer receives air. The water-air distribution valve 10 switches its internal state to connect the water inlet 112a with one or more branch outlets 11a, while ensuring that the air inlet 113a is closed. High-pressure water flows through the selected branch outlet 11a into the corresponding spray arm and is ejected from the spray nozzles of the spray arm, powerfully rinsing the dishes in the dish rack. After rinsing, the water falls back to the bottom of the washing chamber and eventually flows back to the water cup 72, awaiting discharge after the next cycle or the end of the program.

[0050] During the drying process, water no longer enters through the valve inlet 112a. The hot air generated by the drying system is delivered to the air inlet 113a of the water-air distribution valve 10. At this time, the internal state of the water-air distribution valve 10 is switched accordingly. On the one hand, the hot air can be guided to the corresponding spray arm through the connection between the air inlet 113a and one or more branch ports 11a, and blown out from its spray holes to form a blowing airflow on the tableware and inner wall of the dish rack, accelerating the evaporation of moisture. On the other hand, the water-air distribution valve 10 can also connect the air inlet 113a with the water inlet 112a, introducing hot air into the pipeline connected to the water inlet 112a to remove residual moisture in the pipeline connected to the water inlet 112a, effectively preventing bacterial growth and odor generation.

[0051] To further improve drying efficiency and uniformity, in some embodiments, an air inlet is provided on the wall of the washing chamber of the inner drum. The air inlet can be specifically arranged on the top wall of the washing chamber. The air inlet is directly connected to the air outlet of the drying system through an auxiliary air duct. The airflow blown out from different spray arms can be responsible for the fine local drying of the tableware, while the airflow injected from the air inlet is responsible for raising the overall ambient temperature and promoting large-scale air convection, thus shortening the drying time.

[0052] In this embodiment, the switching and distribution of the flow path, whether it is the water circulation in the washing state of the dishwasher or the hot air delivery in the drying state, mainly depends on the water and air distribution valve 10. The specific structure of the water and air distribution valve 10 will be described in detail below.

[0053] In some embodiments, the water-air distribution valve 10 includes a valve housing 11 and a valve core assembly 12. The valve housing 11 has a valve cavity 111a and the aforementioned air inlet 113a, water inlet 112a, and multiple branch inlets 11a, all communicating with the valve cavity 111a. This makes the valve housing 11 a multifunctional integrated hub, integrating the originally separate water and air interfaces into one unit. The valve housing 11 can be made of high-strength, corrosion-resistant engineering plastics. Since the inlets and outlets for the distributed fluids are integrated on the valve housing 11, the connection of external pipelines can be simplified, reducing potential leakage points.

[0054] The valve core assembly 12 is at least partially disposed in the valve cavity 111a. The valve core assembly 12 is movably disposed in the valve housing 11, so that the valve core assembly 12 can change its relative position relationship with the valve inlet 112a, the valve air inlet 113a and the diversion port 11a by changing its position, thereby realizing the switching and control of the water and air flow path.

[0055] Specifically, the valve core assembly 12 includes a water-air switching component and a fluid distribution component, both movably disposed within the valve housing 11. The main function of the water-air switching component is to control the on / off relationship between the valve air inlet 113a, the valve water inlet 112a, and each branch port 11a when switching between washing and drying states, thereby preventing washing water from entering the air path and avoiding crosstalk. The fluid distribution component is responsible for selectively connecting the washing water from the valve water inlet 112a or the drying airflow from the valve air inlet 113a to at least one branch port 11a and / or the valve air inlet 113a according to a preset control logic during washing or drying states, thereby distributing the water or airflow among different spray arms and drying the pipeline connected to the valve air inlet 113a.

[0056] The water-air distribution valve 10 also includes a drive component 20, which is connected to both the water-air switching component and the fluid distribution component, driving them to work together. In the washing state, the drive component 20 drives the water-air switching component to isolate the valve air inlet 113a from the valve water inlet 112a and all the branch ports 11a, ensuring that washing water does not enter the drying air path and guaranteeing the purity and safety of the washing process. It also drives the fluid distribution component to control the valve water inlet 112a to be switchably connected to at least one branch port 11a. For example, when it is necessary to control water spraying from a specific spray arm, the fluid distribution component, under the action of the drive component 20, connects the valve water inlet 112a to the corresponding branch port 11a of that spray arm, achieving point-to-point or zone-to-zone cleaning; when multiple spray arms need to spray water simultaneously or sequentially, the fluid distribution component switches the connection state of the valve water inlet 112a with different branch ports 11a according to a preset timing sequence.

[0057] In the drying state, the drive unit 20 drives the water-air switching unit to control the air inlet 113a to connect with at least one diversion port 11a and / or the water inlet 112a. The connection with the water inlet 112a can assist the airflow and purge residual water. The drive unit drives the fluid distribution unit to control the air inlet 113a to switchably connect with at least one diversion port 11a. The connection with the diversion port 11a is to guide the drying airflow to the corresponding spray arm. The airflow is delivered to various corners inside the dishwasher through the spray arm to dry the tableware and the inner wall. This achieves the distribution of drying airflow between different spray arms, ensuring drying uniformity and efficiency.

[0058] Specifically, in the first mode, the air inlet 113a is connected only to the water inlet 112a, so that all the hot air flows to the water inlet 112a. This can purge and dry the water path connected to the water inlet 112a, remove the residual moisture on the inner wall of the pipe, reduce the growth of bacteria and odor caused by the humid environment, and improve the hygiene level of the dishwasher.

[0059] The second mode: the valve air inlet 113a is connected to at least one diversion port 11a, so that hot air is sprayed into the washing chamber through the corresponding spray arm. By selectively controlling the connection with different diversion ports 11a, the area loaded with difficult-to-dry tableware can be focused on for enhanced drying, so as to achieve precise use of energy and improve drying efficiency.

[0060] In related technologies, the airflow direction and coverage of a fixed-position air outlet are constant (e.g., the air outlet is located on the wall of the washing chamber). However, when users place tableware, contact, stacking, and obstruction between tableware and between tableware and the dish rack are inevitable. This creates obstruction areas on the bottom, back, and contact surfaces of the tableware. Hot air from a fixed air outlet cannot penetrate these obstruction areas, resulting in ineffective removal of moisture and affecting the overall drying speed and effect. In this embodiment, the spray arm rotates under the drive of hot air, so that the air outlet position is no longer a fixed point or surface, but a dynamically scanning three-dimensional space. Hot air can blow on the tableware from multiple angles and in all directions, penetrating into the gaps between tableware and the contact surfaces between tableware and the dish rack, thereby reducing the problem of incomplete drying in certain areas.

[0061] Furthermore, the hot air ejected by the moving spray arm has a certain velocity and momentum, which can create strong turbulence and eddies within the washing chamber. This disturbed airflow field can disrupt the static saturated air layer on the surface of the tableware, accelerate moisture evaporation, and penetrate more powerfully into the internal space of the stacked tableware, thereby improving heat exchange efficiency.

[0062] As mentioned above, this embodiment is equipped with multiple spray arms, which work together to blow air simultaneously or in sections from the top, middle, and bottom of the washing chamber. This three-dimensional drying layout ensures that the tableware receives hot air from different directions regardless of its position in the dish rack, further eliminating drying blind spots and achieving uniform and rapid drying of the tableware.

[0063] The third mode: The air inlet 113a is connected to both the water inlet 112a and at least one branch inlet 11a. Hot air is split into two paths: one part enters the water circuit for pipe drying, and the other part is dried on the tableware via a spray arm. This parallel processing of internal pipe drying and external tableware drying maximizes drying efficiency. While ensuring the hygiene of the water system, the tableware is dried simultaneously, making the entire drying process faster and more comprehensive, achieving better drying results and hygiene standards.

[0064] Compared to related technologies where the functions of the separate water control valve and air switching valve in a dishwasher are integrated into a single valve body, this embodiment improves space utilization, simplifies the internal piping layout of the dishwasher, and reduces the number of parts, thereby significantly improving the utilization of internal space. This creates conditions for achieving a larger capacity washing chamber or a more compact overall design. It makes it possible to achieve a larger washing capacity within limited external dimensions and effectively alleviates the problems of assembly difficulties and maintenance inconvenience caused by crowded internal components.

[0065] This embodiment employs a single drive component 20, which is simultaneously connected to both the water / air switching component and the fluid distribution component, enabling their respective movements. This significantly reduces the number of parts in the entire water / air distribution valve 10, resulting in a substantial simplification of its structure. This directly reduces the overall volume and weight of the valve body, making it easier to fit into the compact installation space inside the dishwasher. This aligns with the trend towards miniaturization and integration in dishwashers. Furthermore, the reduced number of parts lowers assembly complexity and difficulty, improves production efficiency, and further reduces production costs.

[0066] From a logic control perspective, the control unit only needs to issue commands to a single drive element 20, eliminating the need for complex synchronization control and timing matching of two independent actuators. This reduces the risk of asynchronous action caused by inconsistent responses from the two drive elements 20, control signal interference, or mechanical transmission errors, thereby effectively avoiding malfunctions such as crosstalk between water and air paths, valve jamming, or seal failure.

[0067] In terms of cost reduction and energy efficiency improvement, the reduction in the number of drive components 20 directly leads to a decrease in material costs, such as saving a motor, corresponding wiring harness, connectors, and power devices required to drive the motor. At the same time, due to the simplification of the control circuit, the hardware and software costs of the control unit also decrease accordingly.

[0068] In some embodiments, the water-gas distribution valve 10 includes a transmission mechanism, which is a power transmission device disposed between the drive member 20 and the water-gas switching member and the fluid distribution member. The drive member 20 is connected to at least one of the water-gas switching member and the fluid distribution member through the transmission mechanism.

[0069] The specific form of the drive mechanism can be varied. For example, it can be a gear set used to change the direction of motion or reduce speed and increase torque, a cam mechanism used to convert rotary motion into specific linear motion or oscillating motion, a linkage mechanism used to realize long-distance or specific trajectory transmission, or a combination of these mechanisms.

[0070] If no transmission mechanism is set up, the drive component 20 (usually a motor) needs to be directly connected to the water-air switching component and the fluid distribution component, which limits the selection range of the drive component 20 and increases the difficulty of the overall design.

[0071] By setting up a transmission mechanism, the selection of the drive component 20 is no longer limited by the instantaneous movement requirements of the valve core, allowing for the selection of a more universal and lower-cost standardized motor. Simultaneously, the movement pattern of the valve core can be precisely achieved through the design of the transmission mechanism, without having to accommodate the output characteristics of the drive component 20.

[0072] Furthermore, due to the extremely compact interior space of the dishwasher, the drive unit 20, as a relatively independent module, may not be ideally integrated with the valve core assembly 12 in terms of size and shape. Forcing the drive unit 20 directly connected to the water-air switching component and the fluid distribution component could result in irregular protrusions in the structure. The transmission mechanism (such as a drive shaft, bevel gear, or connecting rod) can achieve "long-distance" or "reversible" power transmission. This allows the drive unit 20 to be flexibly installed in any location on the valve housing 11 with sufficient space (e.g., the side, top, or end of the valve body), without having to be coaxial or adjacent to the water-air switching component and the fluid distribution component, making the internal space planning of the valve housing 11 more rational and efficient.

[0073] like Figure 2 and Figure 6 As shown, in some embodiments, the valve housing 11 includes a main housing 111, a washing water inlet pipe 112, and a hot air inlet pipe 113. The main housing 111 serves as the basic structural carrier of the water-air distribution valve 10. The main housing 111 has the aforementioned valve chamber 111a and a diversion port 11a that are interconnected. The washing water inlet pipe 112 and the hot air inlet pipe 113 are both connected to the main housing 111, directly integrating the two functional inlets onto the main housing 111, forming a modular, unified interface unit, rather than separate independent components. The washing water inlet pipe 112 has a valve water inlet 112a that communicates with the valve chamber 111a, and the hot air inlet pipe 113 has a valve air inlet that communicates with the valve chamber 111a.

[0074] It should be noted that, as Figure 9 As shown, in some embodiments, the diversion port 11a may also be provided on the water cup 72.

[0075] The main housing 111, the washing water inlet pipe 112, and the hot air inlet pipe 113 are integrally formed, reducing the weak connection points in the split structure. When subjected to internal water pressure impact or external vibration, it can evenly distribute the stress across the entire valve housing 11, rather than concentrating it at a certain connection point. It also eliminates the risk of interface leakage, improving the sealing performance and long-term reliability of the valve housing 11.

[0076] The following will illustrate, with reference to several specific implementation methods, how to achieve coordinated driving of two different functional components, the water-air switching component and the fluid distribution component, through a single driving component 20, and provide examples of the transmission connection structure between the driving component 20 and the two components.

[0077] like Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the water-gas switching component is movably disposed within the valve housing 11 in a direction away from or close to the valve inlet 113a. That is, the water-gas switching component is movably disposed within the valve housing 11 by linear movement and can perform linear reciprocating motion. Its movement path can be directed towards the valve inlet 113a or away from the valve inlet 113a.

[0078] The water-air switching component is used at least to control the on / off connection between the valve air inlet 113a and all branch inlets 11a and valve water inlet 112a by movement. When the water-air switching component moves to a position close to (or abuts) the valve air inlet 113a, it acts like a "plug" to block the valve air inlet 113a, thereby cutting off the flow of washing water into the valve air inlet 113a during the washing process. Conversely, when it moves away from the valve air inlet 113a, the valve air inlet 113a is opened, allowing the drying airflow to enter.

[0079] In one configuration, a fluid distribution component is movably disposed within the valve housing 11. During the washing state, it selectively directs washing water from the valve inlet 112a to at least one branch port 11a via a movable control valve inlet 112a, thereby controlling the water supply to a specific spray arm and enabling complex washing programs such as layered washing and targeted intensive washing. Furthermore, during the drying state, it is used to connect the air inlet 113a to the valve inlet 112a and / or at least one branch port 11a, allowing the drying airflow to connect to the valve inlet 112a (for drying the water inlet pipe) and / or at least one branch port 11a (for drying tableware via the spray arm).

[0080] In other words, the water distribution function and the air distribution function are integrated into the same fluid distribution component. It acts as a water valve during washing and switches to the air valve during drying. This highly integrated design allows the work that originally required two components to be completed to be accomplished by only one component. This reduces the number of parts and the size of the water and air distribution valve 10.

[0081] like Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the water-air switching component includes a first air-blocking component 122, which is a key component for isolating the drying air path. It can tightly block the valve air inlet 113a. The sealing surface that cooperates with the valve air inlet 113a can be set as a conical surface to achieve a reliable sealing effect and prevent washing water from flowing in through the valve air inlet 113a and damaging the drying system.

[0082] The fluid distribution component includes a first diversion valve plate 121, which may also be made of engineering plastic and can be movably disposed in the valve housing 11 in a direction away from or close to the valve inlet 113a. The first diversion valve plate 121 is an actuator for realizing flow path distribution and can selectively connect or isolate different flow paths.

[0083] In the washing state, the first air-blocking component 122 moves to the air-blocking position of the closed valve air inlet 113a, that is, the first air-blocking component 122 can move towards the valve air inlet 113a until it blocks the valve air inlet 113a to protect the drying air path, while the first diversion valve plate 121 controls the valve water inlet 112a to be switched to be connected to at least one diversion port 11a, thereby introducing water flow to the corresponding spray arm to perform the washing task.

[0084] In the drying state, the first air-blocking component 122 moves to the ventilation position of opening the valve air inlet 113a. That is, the first air-blocking component 122 can move away from the valve air inlet 113a until it is spaced apart from the valve air inlet 113a. The valve air inlet 113a and the valve cavity 111a are in a connected state, forming an effective flow gap. Correspondingly, the first diversion valve plate 121 moves to control the valve air inlet 113a to connect with the valve water inlet 112a and / or control the valve air inlet 113a to switchably connect with at least one diversion port 11a. That is, the first diversion valve plate 121 can realize three working modes by moving to achieve different drying requirements.

[0085] It should be noted that in this embodiment, the movement of the first air-blocking component 122 and the first diverting valve plate 121 is linear. The first air-blocking component 122 moves linearly along the axis of the valve inlet 113a, achieving the blocking of the valve inlet 113a through "linear movement close to the valve inlet 113a" and achieving the opening of the valve inlet 113a through "linear movement away from the valve inlet 113a". The movement trajectory is a straight line, ensuring the stability and reliability of the air-blocking and air-venting actions; the first diverting valve plate 121 moves along the axis of "linear movement away from or close to the valve inlet 113a". The valve moves linearly in the direction of the air inlet 113a. By changing the position of the linear trajectory, it precisely adjusts its relative position with the valve inlet 112a and the diversion port 11a, thereby achieving the connection and isolation of the flow path. The linear motion design of the two components not only simplifies the selection of the drive mechanism (such as adapting to linear motors, cylinders and other linear drive components 20), but also reduces the complexity of the fit between the components and the internal structure of the valve housing 11, ensuring the action accuracy and response speed of the water and air distribution valve 10 when switching between washing and drying states.

[0086] like Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the driving member 20 is a first driving member 21. The first driving member 21 is used to provide power. The first driving member 21 is connected to the first diverter valve plate 121 in a transmission connection. The power output by the first driving member 21 directly acts on the first diverter valve plate 121, driving it to move axially.

[0087] The transmission mechanism includes a linkage mechanism 31, which is located between the first air-blocking component 122 and the first diverting valve plate 121. The function of the linkage mechanism 31 is to establish the connection between the first air-blocking component 122 and the first diverting valve plate 121, and to convert the movement of the first diverting valve plate 121 into the movement of the first air-blocking component 122.

[0088] In this embodiment, the first driving component 21 drives the first diversion valve plate 121 to move. The first diversion valve plate 121 drives the first air-blocking component 122 to move between the air-blocking position and the air-venting position through the linkage mechanism 31. Since the movement of the first air-blocking component 122 relies on the first diversion valve plate 121 driven by the linkage mechanism 31 to realize the correlation between the movements of the two, compared with the problems of action delay and stroke deviation that may occur with independent driving, this embodiment can match the air-blocking / venting action of the first air-blocking component 122 with the flow path switching action of the first diversion valve plate 121 when switching between washing and drying states. In the washing state, when the first diversion valve plate 121 switches to the water path, the first air-blocking component 122 can move to the air-blocking position simultaneously to prevent washing water from seeping into the air path; in the drying state, when the first diversion valve plate 121 switches to the air path or the water path drying flow path, the first air-blocking component 122 can move to the air-venting position simultaneously to ensure that hot air enters smoothly.

[0089] Specifically, the method by which the first driving component 21 drives the first diversion valve plate 121 can be implemented in the following ways: For example, the first driving component 21 can be a motor, which works in conjunction with a lead screw 341 and a nut. The motor drives the lead screw 341 to rotate, and the nut is connected to the first diversion valve plate 121 to convert the rotational motion into linear motion, thereby driving the first diversion valve plate 121 to move. Alternatively, the first driving component 21 can be a miniature cylinder, with a piston rod connected to the first diversion valve plate 121. The piston rod is extended or retracted by air pressure to drive the first diversion valve plate 121 to move. The specific configuration can be tailored to actual needs.

[0090] like Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the water-air distribution valve 10 further includes a first elastic element 123, which may be a compression spring. The two ends of the first elastic element 123 abut against the first air-blocking element 122 and the valve housing 11, respectively. The valve housing 11 serves as a fixed reference, providing a point of application for the supporting force of the first elastic element 123. Understandably, the first air-blocking element 122, as the force-bearing end, receives the elastic force output by the first elastic element 123 and acts in the direction of movement of the first air-blocking element 122, effectively driving the first air-blocking element 122 to move towards the valve inlet 113a, forming a reliable sealing effect.

[0091] When not driven by the first driving member 21, the first elastic member 123 drives the first air-blocking member 122 to remain in the air-blocking position. When the first driving member 21 does not output driving force (such as in the washing state, or when the equipment is stopped and the working condition is not switched), the first elastic member 123 generates a continuous thrust by relying on its own elastic deformation potential energy (such as the rebound potential energy of the compression spring), which drives the first air-blocking member 122 to tightly fit the valve air inlet 113a, reliably blocking the valve air inlet 113a and keeping it in the air-blocking position.

[0092] From an energy consumption perspective, the positioning function of the first elastic element 123 does not require the consumption of external energy sources such as electricity or air pressure; it can be achieved solely through its own characteristics, thus avoiding the energy consumption generated by the long-term operation of the drive mechanism. Simultaneously, the first elastic element 123 has a simple structure and a low failure rate, resulting in lower maintenance frequency and replacement costs compared to complex drive mechanisms. Furthermore, the abutting fit of the first elastic element 123 can buffer the impact of the contact between the first air-blocking element 122 and the valve inlet 113a, reducing wear caused by rigid collisions (such as scratches on the sealing surface or deformation of components), and extending the service life of the sealing structure between the first air-blocking element 122 and the valve inlet 113a.

[0093] Specifically, the first air-blocking component 122 has a sealing groove 1241a, which is circumferentially disposed around the first air-blocking component 122. The valve core assembly 12 also includes a sealing component, which can be a rubber ring. Part of the sealing component is disposed within the sealing groove 1241a and part protrudes outside the sealing groove 1241a. The sealing groove 1241a provides an installation position for the sealing component, used to fix the sealing component, that is, the sealing component can follow the movement of the first air-blocking component 122 to prevent it from shifting or falling off during movement. In the air-blocking position, the sealing component is interference-fitted with the wall of the valve inlet 113a to seal the gap between the first air-blocking component 122 and the wall of the valve inlet 113a. That is, when the protruding part of the sealing component contacts the wall of the valve inlet 113a, it will be further compressed, thereby achieving fluid isolation.

[0094] Furthermore, the elastic material of the seal can buffer the rigid collision between the first air-blocking component 122 and the valve inlet 113a wall, avoiding wear caused by direct contact between the two and extending the service life of the first air-blocking component 122.

[0095] like Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the linkage mechanism 31 includes a hook portion 311 and an overlap portion 312. The hook portion 311 is disposed on one of the first diversion valve plate 121 and the first air-blocking member 122, and the overlap portion 312 is disposed on the other of the first diversion valve plate 121 and the first air-blocking member 122. That is, the hook portion 311 and the overlap portion 312 are respectively disposed on the first diversion valve plate 121 as the active member and the first air-blocking member 122 as the driven member, providing a basis for the interaction between the two.

[0096] In the washing state, the hook part 311 and the overlapping part 312 are spaced apart so that the first elastic member 123 can drive the first air-blocking member 122 to remain in the air-blocking position. The hook part 311 and the overlapping part 312 do not contact each other, and there is no force transmission between them. Therefore, the first air-blocking member 122 is not constrained by the first diversion valve plate 121 and can be stably held in the air-blocking position of the sealing valve inlet 113a under the action of the first elastic member 123. In the drying state, the overlapping part 312, driven by the first driving member 21, moves the overlapping part 312 and the first air-blocking member 122 from the air-blocking position to the air-ventilating position. That is, the first driving member 21 drives the first diversion valve plate 121 to move, which drives the hook part 311 (or overlapping part 312) connected to it to move synchronously. When the hook part 311 contacts and cooperates with the overlapping part 312, the driving force of the first diversion valve plate 121 is transmitted to the first air-blocking member 122 through the two, overcoming the elastic force of the first elastic member 123, and moving the first air-blocking member 122 from the air-blocking position to the air-ventilating position, opening the hot air circulation path and meeting the drying requirements.

[0097] Specifically, the hook portion 311 can be a cantilever beam or a stop extending outward from the side wall of the first diverter valve plate 121, and has a driving plane perpendicular to the direction of movement. The overlapping portion 312 can be a flange extending outward from the first air-blocking member 122, and has an abutting plane parallel to the abutting plane of the hook portion 311. When the first diverter valve plate 121 moves to a preset position, the driving plane of the hook portion 311 will make face contact with the abutting plane of the overlapping portion 312. Through the pushing of the driving plane and the abutting plane, the force is directly transmitted to the overlapping portion 312, thereby driving the first air-blocking member 122 to overcome the elastic force of the first elastic member 123 and move synchronously to the venting position.

[0098] like Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the first diversion valve plate 121 is provided with a hook portion 311. The hook portion 311, as the active force-applying end, is directly integrated into the first diversion valve plate 121. The hook portion 311 can be integrated with the first diversion valve plate 121, reducing the assembly steps of the hook portion 311. The hook portion 311 moves with the movement of the first diversion valve plate 121. The first air-blocking component 122 partially forms an overlapping portion 312. That is to say, there is no need to design an additional independent overlapping portion 312 component (such as a separate protrusion or connecting plate), nor is it necessary to open an additional mounting groove 3311a or hole on the first air-blocking component 122 to assemble the overlapping portion 312, reducing the number of parts and assembly steps. The hook portion 311 moves between the valve inlet 113a and the overlapping portion 312. The hook portion 311 only needs to move a preset distance in the direction of the overlapping portion 312 to complete the engagement.

[0099] Specifically, the first diversion valve plate 121 has a first valve plate cavity 121b extending through both sides along the moving direction. A hook portion 311 is disposed on the cavity wall of the first valve plate cavity 121b. The cavity wall of the first valve plate cavity 121b provides stable support for the hook portion 311, ensuring that the hook portion 311 is not easily deformed during power transmission and improving transmission reliability. The first air-blocking component 122 has a portion of the overlapping portion 312 extending into the first valve plate cavity 121b. Whether in the washing or drying state, the projections of the first air-blocking component 122 and the first diversion valve plate 121 in the direction perpendicular to the moving direction of the first diversion valve plate 121 have overlapping portions. The linkage area of ​​the hook portion 311 and the overlapping portion 312 is integrated inside the first valve plate cavity 121b. There is no need to set a fitting gap between the hook portion 311 and the overlapping portion 312 outside the first valve plate cavity 121b, which compresses the axial length of the valve core assembly 12 and makes the overall structure of the water-air distribution valve 10 more compact.

[0100] like Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, during the washing state, the maximum distance between the hook portion 311 and the overlapping portion 312 can be the air-blocking position when the first air-blocking member 122 is sealed at the valve inlet 113a, and the first diverting valve plate 121 moves to its limit position closest to the valve inlet 113a in its stroke. At this time, the maximum straight-line distance between the hook portion 311 and the overlapping portion 312 measured along the moving direction of the first diverting valve plate 121 is the maximum distance between the hook portion 311 and the overlapping portion 312. This maximum distance is greater than the maximum distance the first diverting valve plate 121 moves away from the valve inlet 113a. The farthest distance the first diverting valve plate 121 moves away from the valve inlet 113a from its limit position closest to the valve inlet 113a defines the range of motion of the first diverting valve plate 121 when performing its "non-drying" function. In this embodiment, the maximum distance between the hook portion 311 and the overlapping portion 312 is defined to be greater than the maximum distance that the first diversion valve plate 121 moves away from the valve inlet 113a. The purpose is to ensure that when the first diversion valve plate 121 moves back and forth throughout its entire non-drying stroke, the hook portion 311 on it can never touch the overlapping portion 312 on the first air blocking member 122.

[0101] During the washing process, the first diverting valve plate 121 can move back and forth within its preset stroke to precisely control the water flow distribution of different spray arms. This prevents the hook portion 311 from accidentally engaging with the overlapping portion 312 during the washing process, which could cause the first air-blocking component 122 to disengage from its air-blocking position and lead to the risk of washing water leaking into the air passage. Even if the first diverting valve plate 121 moves to its limit position, it still cannot contact the overlapping portion 312, ensuring that the first air-blocking component 122 is always constrained by the first elastic member 123 and continuously adheres to the valve inlet 113a, thus ensuring the sealing reliability during the washing process.

[0102] In some embodiments, the first air-blocking component 122 includes a plug 1221 and a connecting rod 1222. The plug 1221 is used to open and close the valve air inlet 113a, that is, the plug 1221 is tightly fitted to the valve air inlet 113a under the action of the first elastic member 123. It is also coaxially arranged with the hot air inlet pipe 113, so that the movement trajectory of the plug 1221 is completely consistent with the axis of the hot air inlet pipe 113, avoiding uneven contact between the end face of the plug 1221 and the valve air inlet 113a due to eccentricity, preventing the formation of local sealing gaps, and blocking the risk of washing water leakage.

[0103] The plug 1221 can be frustoconical. As the plug 1221 moves toward the valve inlet 113a, its inclined side acts like a funnel, providing a natural guide. Even if there is a slight deviation between the plug 1221 and the centerline of the valve inlet 113a, the conical surface will generate a lateral force upon contact with the inlet wall, automatically pushing the plug 1221 back to the correct coaxial position. This self-centering function greatly reduces the requirements for manufacturing and assembly precision, ensuring that the plug 1221 can accurately and smoothly enter the valve inlet 113a each time, effectively avoiding jamming or sealing failure caused by misalignment.

[0104] As the plug 1221 moves toward the air-blocking position, its conical surface will first contact the edge of the valve inlet 113a. As the plug 1221 continues to move deeper, the sealing contact area will gradually expand along the conical surface, and the sealing pressure will increase linearly. This gradual sealing process has less impact than that of a planar plug 1221, and the seal formation is smoother and gentler.

[0105] The connecting rod 1222 is connected to the end of the plug 1221 away from the valve inlet 113a. The connecting rod 1222 extends in a direction parallel to the axial direction of the valve inlet 113a, and the extension length of the connecting rod 1222 can be set according to actual needs. The overlapping part 312 is connected to the end of the connecting rod 1222 away from the plug 1221. The connecting rod 1222 stably transmits the driving force (from the hook part 311) received by the overlapping part 312 to the plug 1221, causing the plug 1221 to slide in a direction away from the valve inlet 113a.

[0106] Please continue reading. Figure 2 , Figure 3 and Figure 4 In some embodiments, the valve housing 11 further includes a support portion 114, which may protrude from the cavity wall of the valve cavity 111a. That is, the support portion 114 is a part extending from the main housing 111. The support portion 114 may be connected to the inner wall of the valve cavity 111a arranged opposite each other in the length direction, rather than the side wall of the valve cavity 111a. Understandably, in this embodiment, the sliding direction of the first diversion valve plate 121 is the length direction of the valve cavity 111a. The connection position of the support portion 114 can avoid the sliding path of the first diversion valve plate 121, ensuring that the two do not interfere with each other.

[0107] The support portion 114 has a certain thickness in the sliding direction of the first diverter valve plate 121. The support portion 114 has a sliding hole that extends through the thickness direction of the support portion 114. Understandably, its extension direction is parallel to the moving direction of the first diverter valve plate 121. The connecting rod 1222 is slidably inserted into the sliding hole. The plug 1221 is located on one side of the sliding hole along the sliding direction of the connecting rod 1222, while the overlapping portion 312 is located on the other side. The sliding hole can constrain the outer periphery of the connecting rod 1222 through the hole wall, which can guide the moving direction of the first air-blocking component 122 and reduce the shaking or swaying that may occur during the operation of the first air-blocking component 122.

[0108] Furthermore, the first elastic element 123 is sleeved on the outer periphery of the connecting rod 1222, so that the first elastic element 123 and the connecting rod 1222 form a coaxial and compact assembly. The first elastic element 123 is a spring. During the compression and extension process, each turn of the spring is restricted by the outer diameter of the connecting rod 1222, preventing bending or twisting. This ensures that the force of the spring is always transmitted along its axial direction, avoiding lateral forces or jamming caused by spring buckling.

[0109] Furthermore, both ends of the first elastic element 123 abut against the plug 1221 and the support portion 114, respectively. That is, the support portion 114 and the plug 1221 limit the spring from both sides in the axial direction. When the plug 1221 moves towards the support portion 114 (i.e., opens the valve inlet 113a), the spring is compressed, thereby storing potential energy. When the driving force disappears, the spring releases energy, pushing the plug 1221 back to the sealed position. In other words, in addition to providing guidance for the connecting rod 1222, the support portion 114 also serves as a support surface for the spring's reaction force.

[0110] In some embodiments, the valve housing 11 further includes at least two guide posts 115. The guide posts 115 extend along the sliding direction of the first air-blocking member 122. One end of the guide post 115 is connected to the main housing 111, and the other end is connected to the support portion 114. That is, the support portion 114 is firmly mounted in the valve cavity 111a through the guide posts 115.

[0111] At least two guide posts 115 are arranged circumferentially around the plug 1221, forming an annular guide boundary. This provides multi-point constraint on the plug 1221 in the circumferential direction, addressing the sag issue most likely to occur due to the plug 1221's large weight and long lever arm. The guide posts 115, through their sliding engagement with the plug 1221, directly limit the sag tendency of the plug 1221 at its source. Furthermore, they prevent wobbling during the sliding process of the plug 1221, forming a "dual positioning" with the central constraint of the sliding hole on the connecting rod 1222, ensuring that the plug 1221 and the valve inlet 113a are always coaxially aligned.

[0112] like Figure 2 , Figure 3and Figure 4 As shown, in some embodiments, the first diversion valve plate 121 is provided with multiple sets of spaced first flow ports 121a. Each set of first flow ports 121a includes at least one first flow port 121a1. Understandably, when the first diversion valve plate 121 moves, it can be switched so that any one of the multiple sets of first flow ports 121a corresponds to the diversion port 11a. That is, washing water or hot air enters the valve chamber 111a from the corresponding valve inlet 112a or valve air inlet 113a. The valve chamber 111a is connected to the first valve plate chamber 121b, and the first valve plate... The cavity wall of cavity 121b is provided with the aforementioned first flow port 121a1. By moving the first diversion valve plate 121, all the first flow ports 121a1 in the first flow port group 121a corresponding to the diversion port 11a can be connected to their respective corresponding diversion ports 11a, so as to realize various flow path combinations such as "single first diversion port 11a conduction" and "multiple first diversion ports 11a conduction simultaneously". This flexibility can be adapted to different cleaning / drying scenarios (such as local key spraying and full-area coverage spraying) and avoid functional limitations caused by fixed flow paths.

[0113] For example, based on the above-mentioned upper spray arm, middle spray arm and lower spray arm configuration, the first group of first flow port group 121a may be correspondingly provided with an upper spray arm flow port communicating with the upper spray arm branch port 11a and a lower spray arm flow port communicating with the lower spray arm branch port 11a, while the second group of first flow port group 121a is provided with a middle spray arm flow port adapted to the middle spray arm branch port 11a.

[0114] When the first diversion valve plate 121 moves to the first group of first flow ports 121a and the diversion port 11a of the valve housing 11, the diversion port 11a of the middle spray arm is blocked by the wall of the first diversion valve plate 121, and washing water or hot air is simultaneously delivered to the upper spray arm and the lower spray arm to achieve localized key cleaning of the upper and lower areas of the tableware.

[0115] When the first diversion valve plate 121 moves to the second group of first flow ports 121a and aligns with the diversion port 11a of the valve housing 11, both the upper spray arm diversion port 11a and the lower spray arm diversion port 11a are blocked by the wall of the first diversion valve plate 121. At this time, the fluid is only delivered to the middle spray arm, which is suitable for scenarios where tableware (such as a small number of bowls and plates) is placed separately on the middle shelf, avoiding the waste of water resources and energy caused by the idling of the upper / lower spray arms.

[0116] Similarly, the first diversion valve plate 121 can be provided with multiple different first flow port groups 121a. The configuration of each first flow port group 121a is designed according to the target spray arm combination to ensure precise adaptation with the corresponding diversion port 11a. By sliding the first diversion valve plate 121, the conversion between different spraying modes can be quickly realized without the need for additional blocking components. The structure of the first diversion valve plate 121 ensures the opening or closing of the flow path, meeting the diverse cleaning scene requirements of the dishwasher.

[0117] In this embodiment, at least one group of first flow ports 121a includes at least two first flow ports 121a1, which is configured with a composite function that can simultaneously match multiple flow ports 11a. That is, it is no longer a connection between a single first flow port 121a1 and a single flow port 11a, but rather a connection between at least two first flow ports 121a1 and at least two flow ports 11a, so that at least two of the multiple spray arms work simultaneously.

[0118] The line connecting the center points of all the first flow ports 121a1 within the same group is parallel to the line connecting the center points of the multiple branch ports 11a. Since the multiple branch ports 11a on the valve housing 11 are fixed, the line connecting their center points is a fixed reference line. The multiple first flow ports 121a1 within the same group on the first branch valve plate 121 need to be synchronously aligned with the target branch port 11a to avoid a situation where one first flow port 121a1 is aligned while another first flow port 121a1 is offset. Therefore, the arrangement direction of all the first flow ports 121a1 within the same group needs to be consistent with the arrangement direction of the multiple branch ports 11a. This ensures that during the entire sliding process of the first branch valve plate 121, all the first flow ports 121a1 within the same group can act as a whole, simultaneously and synchronously reaching the optimal alignment position with their respective corresponding branch ports 11a, realizing the "simultaneous opening and closing" of multiple flow paths and ensuring the perfect realization of the combined operation of multiple spray arms.

[0119] like Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the first diversion valve plate 121 includes a flat plate 1211 and an arc plate 1212. The arc plate 1212 is connected to the flat plate 1211 and surrounds the first valve plate cavity 121b with the flat plate 1211. A hook portion 311 is protruding on the cavity wall of the first valve plate cavity 121b. The hook portion 311 can be set at the lowest point of the arc surface of the arc plate 1212. The hook portion 311 can slide with the first diversion valve plate 121 and stably cooperate with the overlapping portion 312 to transmit driving force to drive the first air-blocking component 122 to move.

[0120] The flat plate 1211 fits against the inner wall of the valve housing 11 to achieve smooth sliding, while the arc-shaped plate 1212 rolls upward, forming a first valve plate cavity 121b with a specific shape and space together with the flat plate 1211. The curved surface of the arc-shaped plate 1212 itself has stronger bending resistance and can resist the deformation of the flat plate 1211 caused by the high pressure impact of the washing water.

[0121] The aforementioned first flow outlets 121a1 are all disposed on the flat plate 1211. The flat surface of the flat plate 1211 can improve the sealing fit between the first flow outlets 121a1 and the branch outlets 11a, reduce fluid leakage, and since the density of hot air is less than that of air, it has an upward flow tendency. The flat plate 1211 is located above the arc plate 1212. When the first flow outlets 121a1 are opened on the flat plate 1211, the hot air can naturally flow upward to the first flow outlets 121a1 and then enter the corresponding branch outlets 11a through the first flow outlets 121a1, reducing the need for additional power to push the hot air upward and reducing heat loss.

[0122] Multiple sets of first flow ports 121a are arranged at intervals on the planar plate 1211 along the moving direction of the first flow divider valve plate 121. Different sets of first flow ports 121a will not cause crossflow due to overlap. For a first flow port group 121a containing at least two first flow ports 121a1, all the first flow ports 121a1 in the group are arranged at intervals along the width direction perpendicular to the moving direction. That is, multiple sets of first flow ports 121a are arranged along the length direction of the planar plate 1211. Only for the first flow port group 121a containing at least two first flow ports 121a1, all the first flow ports 121a1 in the group are arranged at intervals along the width direction (perpendicular to the length direction) of the planar plate 1211.

[0123] Along the length (axial direction) of the first diversion valve plate 121, the first flow port group 121a, which is consistent with the washing state function, can be repeatedly set for scenarios that need to simultaneously adapt to the drying state and the spray arm switching.

[0124] Please continue reading. Figure 2 , Figure 3 and Figure 4In some embodiments, the arc-shaped plate 1212 is provided with a first clearance notch 1212a to allow washing water flowing in from the washing water inlet pipe 112 to pass through. Since the arc-shaped plate 1212 is connected to the flat plate 1211 and surrounds the first valve plate cavity 121b, if the arc-shaped plate 1212 completely covers the two sides of the flat plate 1211, it will cause the arc-shaped plate 1212 to block the valve inlet 112a during the washing state. The first clearance notch 1212a allows water to flow smoothly by opening a channel in the arc-shaped plate 1212 at the position corresponding to the valve inlet 112a. In the drying state, if the drying valve inlet 112a is not needed, the first diversion valve plate 121 can be moved to allow the part of the arc-shaped plate 1212 without the first clearance notch 1212a to cover the valve inlet 112a, thus blocking the valve inlet 112a.

[0125] Furthermore, the shape of the main housing 111 is adapted to the shape of the first diverter valve plate 121. The area inside the main housing 111 corresponding to the flat plate 1211 is set as a flat cavity wall, which fits snugly with the upper surface of the flat plate 1211. The area corresponding to the arc plate 1212 is set as an adapted arc cavity wall, which fits snugly with the outer curved surface of the arc plate 1212. Moreover, the size of the valve cavity 111a of the main housing 111 is larger than the outer size of the first diverter valve plate 121, and a preset sliding gap is reserved to avoid interference fit causing jamming. This allows the first diverter valve plate 121 to be completely accommodated in the valve cavity 111a of the main housing 111 without significant radial sway space.

[0126] In this embodiment, the planar plate 1211 of the first diverting valve plate 121 extends longer in the sliding direction than the arc-shaped plate 1212. Correspondingly, the valve chamber 111a of the main housing 111 is constructed in a stepped structure. Specifically, the internal space of the valve chamber 111a gradually decreases from the side near the valve inlet 113a to the side away from the valve inlet 113a, thus forming a larger first chamber and a smaller second chamber. During the movement of the first diverting valve plate 121, the end of the planar plate 1211 away from the first air-blocking member 122 can slide into the second chamber. Since the size of the second chamber in the sliding direction is adapted to the thickness of the planar plate 1211, the second chamber can guide and constrain the end of the planar plate 1211, thereby limiting the overall movement direction of the first diverting valve plate 121.

[0127] This reduces any tilting or swaying that the first diversion valve plate 121 may produce during its movement, ensuring the alignment accuracy of each group of first flow ports 121a with the corresponding diversion ports 11a, and guaranteeing the absolute reliability of fluid switching.

[0128] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, in another configuration, the fluid distribution component is rotatably disposed within the valve housing 11. During the washing cycle, it controls the connection between the water inlet 112a and at least one branch port 11a via rotation. During the drying cycle, it controls the connection between the air inlet 113a and the water inlet 112a and / or at least one branch port 11a via rotation. Understandably, the difference between this configuration and the one described above is that the fluid distribution component is rotatably disposed, allowing for continuous or stepped rotational movement around its axis. Switching from one branch port 11a to an adjacent branch port 11a often requires only a small rotation angle. This movement is continuous and smooth, without abrupt changes in direction. The smoothness of the rotational movement significantly reduces mechanical shock and noise within the water / air distribution valve 10, making the dishwasher quieter during operation and improving the user experience.

[0129] Linear fluid distribution components require sufficient space for linear travel, while rotary fluid distribution components can arrange interfaces within a relatively fixed radial dimension, resulting in a more regular and compact structure.

[0130] like Figure 6 , Figure 7 and Figure 8 As shown, in some embodiments, the water-air switching component includes a second air-blocking component 124, which functions similarly to the first air-blocking component 122 described above, and will not be repeated here. The fluid distribution component includes a second diversion valve plate 125. In the washing state, the second air-blocking component 124 moves to the air-blocking position of the closed valve air inlet 113a to protect the drying air path, while the second diversion valve plate 125 controls the valve water inlet 112a to be switchably connected to at least one diversion port 11a, thereby introducing water flow to the corresponding spray arm to perform the washing task.

[0131] In the drying state, the second air-blocking component 124 moves to the ventilated position of opening the valve air inlet 113a. That is, the second air-blocking component 124 can move away from the valve air inlet 113a until it is spaced apart from the valve air inlet 113a. The valve air inlet 113a and the valve cavity 111a are in a connected state, forming an effective flow gap. Correspondingly, the second diversion valve plate 125 rotates to control the valve air inlet 113a to connect with the valve water inlet 112a and / or control the valve air inlet 113a to switchably connect with at least one diversion port 11a. That is, the second diversion valve plate 125 can achieve three working modes by rotating to meet different drying requirements.

[0132] In some embodiments, the driving member 20 is a second driving member 22, which is the power core of the valve core assembly 12 and provides power to the entire transmission system. The transmission mechanism includes a motion conversion mechanism. The second driving member 22 is driven by the second diverter valve plate 125. The second driving member 22 drives the second diverter valve plate 125 to rotate and drives the second air-blocking member 124 to move between the air-blocking position and the air-venting position through the motion conversion mechanism. The input end of the motion conversion mechanism is connected to the output shaft 224 of the second driving member 22, and the output end is driven by the second air-blocking member 124, and is used to convert the rotational motion of the second driving member 22 into linear motion.

[0133] That is, the second driving component 22 serves as the core power source. On the one hand, it is directly connected to the second diversion valve plate 125 to drive its rotation. On the other hand, it indirectly drives the second air blocking component 124 to move through the motion conversion mechanism (which converts rotational motion into linear motion). This achieves coordinated control of the two actions of the rotation of the second diversion valve plate 125 and the movement of the second air blocking component 124, and the action linkage is completed based on the same driving source.

[0134] In some embodiments, the second drive member 22 includes a motor fixed to the valve housing 11 and at least partially exposed outside the valve housing 11. The portion of the motor having an output shaft 224 extends into the valve cavity 111a and extends along a preset transmission direction of the valve housing 11 to ensure that power can be stably transmitted when the output shaft 224 rotates.

[0135] The second diversion valve plate 125 is sleeved on the output shaft 224 of the motor so that the output shaft 224 drives the second diversion valve plate 125 to rotate. The rigid linkage between the second diversion valve plate 125 and the output shaft 224 can be achieved by key connection, set screw locking or interference fit, etc., to ensure that the second diversion valve plate 125 can rotate synchronously when the motor output shaft 224 rotates, and to avoid transmission failure caused by relative slippage.

[0136] The motor output shaft 224 directly drives the second diversion valve plate 125 to rotate, reducing the gap and loss in the intermediate transmission links. It can accurately control the rotation angle of the second diversion valve plate 125 and avoid water / air circuit misconnection or poor sealing due to transmission errors.

[0137] The motion conversion mechanism includes a lead screw drive mechanism 34, which comprises a threaded lead screw 341 and a transmission seat 342. The lead screw 341 is linked to and coaxially arranged with the output shaft 224 of the motor, so that the rotation of the motor output shaft 224 can be synchronously transmitted to the lead screw 341, causing the lead screw 341 to rotate around its own axis. The transmission seat 342 is connected to the second air-blocking component 124, that is, the transmission seat 342 is threadedly fitted onto the lead screw 341 to drive the second air-blocking component 124 to move between the air-blocking position and the air-venting position.

[0138] The pitch and length of the lead screw 341 can be flexibly designed according to the travel requirements of the second air-blocking component 124. The connection method between the transmission seat 342 and the second air-blocking component 124 can also be adjusted according to the structure of the air-blocking component, so that the transmission scheme can be adapted to the design of water and air distribution valves 10 with different sizes and sealing requirements, and has strong flexibility and versatility.

[0139] By converting the rotation of the lead screw 341 into the linear movement of the transmission seat 342 through the threaded engagement, the movement distance of the second air-blocking component 124 can be precisely controlled, ensuring that it can tightly fit the valve inlet 113a to achieve a reliable seal when in the air-blocking position, and can fully open the valve inlet 113a to ensure smooth airflow when in the air-ventilating position, thus reducing the risk of failure caused by incomplete air-blocking.

[0140] like Figure 6 , Figure 7 and Figure 8 As shown, in some embodiments, the water-air distribution valve 10 further includes a second elastic element 126. The second spring element can be a compression spring, specifically a cylindrical helical compression spring, and the material can be stainless steel, which has good corrosion resistance and elastic recovery ability, avoiding functional failure due to rust or elastic decay after long-term use.

[0141] The two ends of the second elastic member 126 abut against the second air-blocking member 124 and the transmission seat 342 respectively, causing the second air-blocking member 124 to tend to move toward the valve inlet 113a. An annular groove is provided on the end face of the second air-blocking member 124 facing the transmission seat 342. Correspondingly, an annular groove 22a is also provided on the end face of the transmission seat 342 facing the second air-blocking member 124. One end of the second elastic member 126 is embedded in the annular groove, and the other end is embedded in the annular groove 22a, so as to prevent the elastic member 3314 from shifting or tilting during compression / extension.

[0142] After installation, the second elastic element 126 is always in a pre-compressed state. Through the thrust generated by its own elastic deformation, it applies a force to the second air-blocking element 124 in the direction of the valve inlet 113a, so that the second air-blocking element 124 naturally has a tendency to move towards the valve inlet 113a.

[0143] When the lead screw drive mechanism 34 drives the drive seat 342 to move axially, the second elastic element 126 is compressed or extended synchronously with the movement of the drive seat 342: if the drive seat 342 moves closer to the second air-blocking element 124, it will further compress the second elastic element 126, increase the elastic thrust, and accelerate the movement of the second air-blocking element 124 toward the valve inlet 113a; if the drive seat 342 moves away from the second air-blocking element 124, the compression of the second elastic element 126 decreases, and the elastic thrust is gradually released. At this time, the second air-blocking element 124 can maintain its fit with the valve inlet 113a under the action of the elastic thrust.

[0144] like Figure 6 , Figure 7 and Figure 8 As shown, in some embodiments, the end of the second elastic member 126 near the transmission seat 342 is fixed to the transmission seat 342. When the transmission seat 342 continues to move away from the valve air inlet 113a and the moving distance exceeds the maximum extension of the second elastic member 126, the transmission seat 342 will exert a pulling force on the second air blocking member 124 through the second elastic member 126, thereby driving the second air blocking member 124 to overcome the adhesion force and move away from the valve air inlet 113a, and finally causing the second air blocking member 124 to disengage from the valve air inlet 113a and open the air passage (enter the drying state).

[0145] In some embodiments, the transmission base 342 includes a transmission rod 3421 and a support platform 3422. The transmission rod 3421 has a long strip structure and can be made of high-strength metal or engineering plastic to ensure that it is not easily deformed during power transmission. The second elastic member 126 is sleeved on the transmission rod 3421. The transmission rod 3421 can provide stable support for the second elastic member 126. The transmission rod 3421 plays a precise guiding role for the second elastic member 126. Compared with the non-guided installation method, it can effectively limit the radial displacement of the elastic member 3314 during the extension and retraction process, and prevent the elastic member 3314 from failing to abut against the second air-blocking member 124 and the support platform 3422 due to displacement, or from interfering with other components inside the valve body 11.

[0146] The support platform 3422 is connected to one end of the transmission rod 3421 away from the valve inlet 113a. The support platform 3422 is cylindrical and its material can be the same as that of the transmission rod 3421. It is fixed to the transmission rod 3421 by integral molding. The outer diameter of the support platform 3422 is larger than that of the transmission rod 3421. The aforementioned annular groove 22a is provided on the support platform 3422 and is arranged around the transmission rod 3421. The two ends of the second elastic member 126 abut against the support platform 3422 and the second air-blocking member 124 respectively, providing a reliable force-bearing support surface for the elastic member 3314 and preventing the elastic member 3314 from falling off one end of the transmission rod 3421 away from the valve inlet 113a during compression or extension.

[0147] During assembly, the second elastic element 126 can be directly sleeved on the transmission rod 3421, and the initial positioning of the elastic element 3314 can be completed by the limiting of the support platform 3422. There is no need to set up additional complex positioning fixtures or fixing structures, which simplifies the assembly steps.

[0148] like Figure 6 , Figure 7 and Figure 8As shown, in some embodiments, the inner wall of the valve housing 11 and one of the second air-blocking components 124 are provided with a sliding portion 127, and the other is provided with a limiting slide extending axially parallel to the output shaft 224. The sliding portion 127 is slidably disposed in the limiting slide, forming a constraint relationship that only allows movement along the axial direction parallel to the output shaft 224, strictly limiting the radial rotation or offset of the second air-blocking component 124 in a non-parallel direction.

[0149] Ensure that when the second air-blocking component 124 moves from the venting position to the air-blocking position, its sealing end is always aligned with the center area of ​​the valve inlet 113a, and that the sealing end is not misaligned with the edge of the valve inlet 113a due to the shift in the moving direction, so as to avoid problems such as local sealing and local leakage.

[0150] Specifically, in this embodiment, a sliding part 127 is disposed on the second air-blocking member 124. There are two sliding parts 127, which are disposed on opposite sides of the second air-blocking member 124 and extend radially. Correspondingly, the cavity wall of the valve cavity 111a is provided with two limiting slides. The two limiting slides and the two sliding parts 127 are arranged one-to-one to form a symmetrical guide support structure, so that the limiting slide constraint reaction force and frictional resistance on both sides of the second air-blocking member 124 remain balanced during the movement, and the second air-blocking member 124 is prevented from tilting or shifting to one side due to excessive force on one side.

[0151] When the two sliding parts 127 cooperate with the two limiting slides respectively, the second air-blocking component 124 is mounted inside the valve cavity 111a. The second air-blocking component 124 is mounted inside the valve cavity 111a through the sliding parts 127 on both sides, which can ensure that its sealing end (the end facing the valve inlet 113a) always maintains a horizontal posture parallel to the valve inlet 113a, and avoids the sealing end tilting due to uneven contact force between the second air-blocking component 124 and the inner wall of the valve cavity 111a.

[0152] like Figure 6 , Figure 7 and Figure 8 As shown, in some embodiments, the second air-blocking component 124 includes a sealing head 1241 and a guide rod 1242. The sealing head 1241 is frustum-shaped, and the aforementioned annular groove can be provided on the end face of the sealing head 1241 facing the transmission seat 342. The end face of the sealing head 1241 facing the valve inlet 113a is the sealing surface. Air blocking is achieved by fitting against the end face of the valve inlet 113a, that is, the sealing head 1241 is used to open and close the valve inlet 113a. The guide rod 1242 is connected to the end of the sealing head 1241 away from the valve inlet 113a, and can be integrally formed, threadedly connected, or snap-fit ​​connected to ensure synchronous movement of the two.

[0153] The guide rod 1242 has a guide groove 1242a extending axially parallel to the output shaft 224. The transmission seat 342 also includes a guide portion 3423 protruding from the support platform 3422. The guide portion 3423 extends radially along the transmission seat 342 and is slidably inserted in the guide groove 1242a. When the transmission seat 342 moves axially with the screw transmission mechanism 34, the guide portion 3423 slides synchronously along the guide groove 1242a. Through the constraint of the guide groove 1242a, the movement direction of the second air plug 124 is completely consistent with that of the transmission seat 342.

[0154] Because the second air-blocking component 124 is strictly restricted from circumferential rotation through the cooperation of the sliding parts 127 on both sides with the limiting slide of the valve cavity 111a, and the guide part 3423 of the transmission seat 342 passes through the guide groove 1242a of the guide rod 1242 of the second air-blocking component 124, the circumferential posture of the guide groove 1242a is fixed, and thus the guide part 3423 is circumferentially limited by the inner wall of the guide groove 1242a, avoiding the circumferential rotation of the transmission seat 342 that may occur due to the threaded engagement characteristics of the screw 341, and ensuring that the transmission seat 342 can only translate along the axial direction parallel to the output shaft 224.

[0155] When the sealing head 1241 of the second air-blocking component 124 initially contacts the valve inlet 113a (reaching the preset air-blocking position), the second air-blocking component 124 is blocked by the valve inlet 113a and cannot continue to move forward. However, the lead screw 341 can still continue to rotate under the drive of the motor, driving the transmission seat 342 to continue to move towards the valve inlet 113a. At this time, the second air-blocking component 124 is stationary, the distance between the transmission seat 342 and the second air-blocking component 124 is reduced, the second elastic element 126 is further compressed, and the guide part 3423 slides along the guide groove 1242a towards the valve inlet 113a, so as to avoid the lead screw 341 from jamming or the motor from being overloaded due to the inability of the transmission seat 342 to move.

[0156] When the second driving member 22 reverses, the transmission seat 342 moves away from the valve inlet 113a. Initially, the transmission seat 342 moves independently, and the guide part 3423 slides along the guide groove 1242a away from the valve inlet 113a. At this time, the second air-blocking member 124 remains in contact with the valve inlet 113a under the elastic thrust of the second elastic member 126. When the transmission seat 342 moves to the point where the guide part 3423 abuts against the guide groove 1242a away from the valve inlet 113a... When the guide part 3423 moves away from the side wall of the valve inlet 113a, the subsequent movement of the transmission seat 342 is transmitted to the second air-blocking component 124 through the contact between the guide part 3423 and the side wall of the slide groove. The second air-blocking component 124 is pulled away from the valve inlet 113a. As the second air-blocking component 124 gradually moves away from the valve inlet 113a, the valve inlet 113a opens, and the drying airflow can enter the valve cavity 111a, completing the switch from the washing state to the drying state.

[0157] like Figure 6 , Figure 7 and Figure 8 As shown, in some embodiments, a transmission key 343 is provided between the output shaft 224 and the lead screw 341 along the axial direction of the output shaft 224. The second diversion valve plate 125 has a keyway adapted to the transmission key 343. The keyway is located in the middle of the second diversion valve plate 125. The transmission key 343 is embedded in the keyway. When the motor drives the output shaft 224 to rotate, the transmission key 343 transmits torque through the side wall of the keyway, synchronously driving the lead screw 341 to rotate and the second diversion valve plate 125 to rotate, so as to realize the movement of the transmission seat 342 and realize the switching of water / air circuit, ensuring that the rotation of the three is completely synchronized.

[0158] During assembly, simply align the keyway of the second diverter valve plate 125 with the transmission key 343 and insert it. This will automatically ensure the relative angular position of the second diverter valve plate 125 with the output shaft 224 and the lead screw 341. No additional angle calibration is required, which greatly simplifies the assembly process.

[0159] like Figure 6 , Figure 7 and Figure 8 As shown, in some embodiments, a stop portion 344 is further provided between the output shaft 224 and the transmission key 343. The stop portion 344 can be an annular structure, either integrally formed with the output shaft 224 or a separate annular washer. The outer diameter of the stop portion 344 is larger than the outer diameter of the keyway, and the stop portion 344 abuts against the surface where the keyway opening is located. That is, after the second diverter valve plate 125 is assembled in place, the end face of the stop portion 344 can fit tightly against the end face where the keyway of the second diverter valve plate 125 is located, restricting the axial displacement of the second diverter valve plate 125.

[0160] During installation, the assembler only needs to fit the second diversion valve plate 125 along the transmission key 343 until it abuts against the stop part 344 to confirm the accurate axial position of the second diversion valve plate 125. If the second diversion valve plate 125 is installed too deep, it may get close to the output shaft 224 and cause friction.

[0161] Furthermore, the tight contact between the stop part 344 and the keyway of the second diversion valve plate 125 can prevent the washing water and residue in the valve cavity 111a from entering the mating gap between the second diversion valve plate 125 and the transmission key 343, thus preventing the output shaft 224 from rusting or jamming.

[0162] like Figure 6 , Figure 7 and Figure 8 As shown, in some embodiments, the sealing head 1241 has a sealing groove 1241a, which can be arranged around the side of the sealing head 1241 facing the valve inlet 113a. Its shape is adapted to the shape of the valve inlet 113a. The valve core assembly 12 also includes a first sealing element 128, which can be a ring or an annular rubber pad. Part of the first sealing element 128 is disposed in the sealing groove 1241a and part of it protrudes out of the sealing groove 1241a. The sealing groove 1241a can provide space for the installation and positioning of the first sealing element 128, so that the first sealing element 128 can follow the movement of the second air-blocking element 124 and avoid displacement.

[0163] In the air-blocking position, the first seal 128 is interference-fitted with the wall of the valve inlet 113a to seal the gap between the sealing head 1241 and the wall of the valve inlet 113a. Even if there are minor scratches or dents (processing errors) on the sealing surface of the sealing head 1241 or the valve inlet 113a, or if there is a slight misalignment during assembly, the elastic deformation of the first seal 128 can adapt to these defects and fill the gap, preventing washing water from entering the valve inlet 113a from the gap.

[0164] If the sealing head 1241 is in direct, rigid contact with the valve inlet 113a, repeated collisions over a long period can easily lead to wear on the sealing surfaces of both, such as scratches on the second air-blocking component 124 and deformation of the valve inlet 113a, thus increasing the sealing gap. The first sealing component 128, acting as an elastic buffer layer, can absorb the impact force at the moment of contact, reducing direct friction and collision damage between the sealing head 1241 and the valve inlet 113a, and extending their service life.

[0165] like Figure 6 , Figure 7 and Figure 8As shown, in some embodiments, the portion of the second drive member 22 that extends into the valve chamber 111a has a stepped groove 22b. The second drive member 22 includes a motor body 221, a limiting seat 222, and a connecting shell. The limiting seat 222 is disposed at the output shaft 224 end of the motor body 221 to limit the output shaft 224 and is provided with the aforementioned stepped groove 22b. The connecting shell is disposed around the periphery of the motor body 221 on the side facing the opening, and the inner wall of the connecting shell is provided with a slot 22a that engages with the main housing 111.

[0166] The valve core assembly 12 also includes a second seal 129, which, like the first seal 128, can be a ring or an annular rubber ring. The second seal 129 is disposed in the stepped groove 22b and is interference-fitted with the wall of the opening to seal the gap between the second drive member 22 and the wall of the opening. The stepped groove 22b provides a fixed base for the second seal 129. The interference fit allows the second seal 129 to prevent the washing water and drying airflow in the valve cavity 111a from leaking through the gap between the second drive member 22 and the opening (such as washing water leaking out of the valve housing 11, causing the machine body to become damp, or the drying airflow leaking, affecting the drying efficiency). It can also prevent external dust and residue from entering the valve cavity 111a, protecting the internal transmission components.

[0167] like Figure 6 , Figure 7 and Figure 8 As shown, in this embodiment, at least one group of second flow ports 125a includes at least two second flow ports 125a1, which is configured with a composite function that can simultaneously match multiple flow ports 11a. That is, it is no longer a connection between a single second flow port 125a1 and a single flow port 11a, but rather a connection between at least two second flow ports 125a1 and at least two flow ports 11a, so that at least two of the multiple spray arms work simultaneously.

[0168] The line connecting the center points of all the second flow ports 125a1 within the same group is parallel to the line connecting the center points of the multiple branch ports 11a. Since the multiple branch ports 11a on the valve housing 11 are fixed, the line connecting their center points is a fixed reference line. The multiple second flow ports 125a1 within the same group on the second flow divider valve plate 125 need to be synchronously aligned with the target branch port 11a to avoid a situation where one second flow port 125a1 is aligned while another second flow port 125a1 is offset. Therefore, the arrangement direction of all the second flow ports 125a1 within the same group needs to be consistent with the arrangement direction of the multiple branch ports 11a. This ensures that during the entire sliding process of the second flow divider valve plate 125, all the second flow ports 125a1 within the same group can act as a whole, simultaneously and synchronously reaching the optimal alignment position with their respective corresponding branch ports 11a, realizing the "simultaneous opening and closing" of multiple flow paths and ensuring the perfect realization of the combined operation of multiple spray arms.

[0169] In some embodiments, the second diversion valve plate 125 is provided with a second clearance notch 1251a to allow washing water flowing in from the washing water inlet pipe 112 to pass through. Without the second clearance notch 1251a, the plate of the second diversion valve plate 125 would block the valve inlet 112a during the washing cycle. The second clearance notch 1251a allows water to flow smoothly by creating a channel on the second diversion valve plate 125 at the position corresponding to the valve inlet 112a. During the drying cycle, if drying the valve inlet 112a is not required, the rotation of the second diversion valve plate 125 can allow the portion without the second clearance notch 1251a to cover the valve inlet 112a, thus sealing it.

[0170] like Figure 9 , Figure 10 and Figure 13 As shown, in another configuration, the water-air switching component is rotatably disposed on the valve housing 11 along the first direction, and is used to realize the on / off control between the valve air inlet 113a and all the branch ports 11a and the valve water inlet 112a by rotation, thereby realizing the on / off connection between the air circuit and the entire water circuit system.

[0171] The fluid distribution component is rotatably disposed on the valve housing 11 at least along a second direction, which is opposite to the first direction. The fluid distribution component is used to communicate with at least one diversion port 11a by rotating the control valve inlet 112a in the washing state, and to communicate with the valve inlet 112a and / or at least one diversion port 11a by rotating the control valve air inlet 113a in the drying state.

[0172] Specifically, when the drive component 20 (e.g., a reversible motor) rotates in the first direction, its power is transmitted to the water-air switching component through a specific transmission mechanism, driving it to rotate to open or close the valve inlet 113a, thus achieving a macroscopic switch between the washing mode and the drying mode. During this process, the fluid distribution component remains stationary because it does not respond to rotation in this direction, ensuring the independence and stability of the mode switching.

[0173] Subsequently, when fine fluid distribution is required in a predetermined mode, the control unit only needs to instruct the drive unit 20 to rotate in a second direction opposite to the first direction. At this time, the fluid distribution unit is driven to rotate, allowing it to select different outlets 11a for water supply in washing mode, or different pipelines for air supply in drying mode. During this period, the water-air switching unit remains locked in its current state because it does not respond to rotation in this direction, providing a stable working platform for fluid distribution.

[0174] In some embodiments, the water-air switching component includes a water-air distribution valve plate 131, and the fluid distribution component includes a rotating diverter valve plate 141. Understandably, the water-air distribution valve plate 131 is a disc-shaped body with specific notches or through-holes, and the opening and closing of the flow channel is determined by changes in the rotation angle. Similarly, the fluid distribution component is also a disc-shaped body with specific notches or through-holes, and the communication state of the flow channel is determined by changes in the rotation angle, used to guide the inlet fluid to different outlets. This facilitates a thinner axial design for the water-air distribution valve 10.

[0175] The transmission mechanism includes a one-way transmission mechanism 33, which is key to achieving step-by-step control. The one-way transmission mechanism 33 is connected to both the water-air distribution valve plate 131 and the rotating diversion valve plate 141. In the washing state, the one-way transmission mechanism 33 drives the water-air distribution valve plate 131 to rotate in the first direction, isolating the valve air inlet 113a from the valve water inlet 112a and all diversion ports 11a, thus preventing the risk of washing water entering the drying device and providing the most reliable safety guarantee for the entire machine. Subsequently, the one-way transmission mechanism 33 drives the rotating diversion valve plate 141 to rotate in the second direction, allowing the valve water inlet 112a to be switchably connected to at least one diversion port 11a when the water-air distribution valve plate 131 stops rotating. Under the premise of ensuring safety, the one-way transmission mechanism 33 switches the power transmission path, driving the rotating diversion valve plate 141 to distribute water flow.

[0176] In the drying state, the one-way transmission mechanism 33 drives the water-air distribution valve plate 131 to rotate in the first direction, thereby controlling the connection between the valve air inlet 113a and at least one diversion port 11a and / or the valve water inlet 112a. Similarly, through a single-direction rotation command, the system first completes the mode switch from washing to drying. This provides a unified and clear mode switching action, ensuring that the air path is ready before any drying distribution action begins, with clear action logic and efficient execution. Subsequently, the one-way transmission mechanism 33 drives the rotating diversion valve plate 141 to rotate in the second direction, thereby controlling the valve air inlet 113a to be switchably connected to at least one diversion port 11a, provided that the water-air distribution valve plate 131 stops rotating. After the main air path switch is opened, the system again uses reverse rotation to independently control the rotating diversion valve plate 141 to guide the drying airflow, thereby achieving precise control of the airflow direction.

[0177] In some embodiments, the one-way transmission mechanism 33 includes a ratchet transmission assembly 331, which is connected to the water and air distribution valve plate 131 and the rotating diversion valve plate 141. The ratchet transmission assembly 331 is a mechanical one-way transmission device. When the driving member rotates in a certain direction, the pawl 3312 will engage with the tooth groove of the ratchet 3311 and push it to rotate synchronously. When the driving member rotates in the opposite direction, the pawl 3312 will slide on the back of the tooth and not transmit power, thereby realizing one-way drive.

[0178] Alternatively, the one-way transmission mechanism 33 includes a one-way bearing assembly, which is connected to the water and air distribution valve plate 131 and the rotating diversion valve plate 141. The one-way bearing assembly is a precision one-way transmission element based on rolling friction. When the inner ring rotates relative to the outer ring in one direction, the needle roller is wedged, realizing power locking and transmission; when it rotates in the opposite direction, the needle roller is in a free state, allowing the inner and outer rings to rotate relative to each other.

[0179] like Figure 10 , Figure 11 and Figure 12 As shown, in this embodiment, the one-way transmission mechanism 33 is a ratchet transmission assembly 331, which includes a ratchet 3311 and a pawl 3312. The ratchet 3311 has an internal gear ring structure and is fixedly connected to the water-air distribution valve plate 131. The pawl 3312 is located inside the ratchet 3311, and part of its structure protrudes from the ratchet 3311 to connect with the rotating diversion valve plate 141.

[0180] When the pawl 3312 rotates in the first direction, it engages with the ratchet 3311, causing the ratchet 3311 to rotate in the first direction, thereby causing the water-air distribution valve plate 131 and the rotating diversion valve plate 141 to rotate in the first direction. When the pawl 3312 rotates in the second direction, it disengages from the ratchet 3311, and the pawl 3312 rotates independently in the second direction relative to the ratchet 3311, thereby causing the rotating diversion valve plate 141 to rotate independently in the second direction.

[0181] like Figure 10 , Figure 11 and Figure 12 As shown, the ratchet 3311 further includes a first external connecting portion 3311c that connects to the water / air distribution valve plate 131. A mounting groove 3311a is formed on the inner side of the ratchet 3311, and ratchet teeth 3311b that mesh with the pawl 3312 are formed on the sidewall of the mounting groove 3311a. The ratchet drive assembly 331 also includes a pawl seat 3313, an elastic element 3314, and a ratchet lower cover 3315. The pawl seat 3313 is rotatably disposed within the mounting groove 3311a and has an inner connecting portion 3313a that passes through the first external connecting portion 3311c and connects to the rotating diverter valve plate 141. The pawl 3312 is movably disposed between the pawl seat 3313 and the ratchet teeth 3311b. One end of the elastic element 3314 is connected to the pawl seat 3313, and the other end abuts against the pawl 3312. The ratchet cover 3315 is used to cooperate with the ratchet 3311 to restrict the pawl seat 3313, pawl 3312 and elastic element 3314 within the mounting groove 3311a.

[0182] The output shaft 224 of the drive unit 20 passes through the through hole provided in the ratchet lower cover 3315 and is connected to the pawl seat 3313. The drive unit 20 is used to drive the pawl seat 3313 and the pawl 3312 to rotate in a first direction or a second direction.

[0183] like Figure 10 , Figure 11 and Figure 12 As shown, the valve housing 11 has a through-channel communicating with the valve cavity 111a. The first outer connecting part 3311c of the ratchet 3311 passes through the through-channel and is fixedly connected to the water-air distribution valve plate 131 in the valve cavity 111a. The inner connecting part 3313a of the pawl seat 3313 extends out from the first outer connecting part 3311c and is connected to the rotating diverter valve plate 141. The first outer connecting part 3311c and the inner connecting part 3313a are cylindrical and coaxially arranged.

[0184] Another alternative implementation of the one-way transmission mechanism 33 is a one-way bearing assembly. This one-way bearing assembly includes an outer ring, an inner ring, and a locking element. The outer ring is fixedly connected to the water / air distribution valve plate 131. The inner ring is located inside the outer ring, and a portion of its structure protrudes from the outer ring to connect with the rotating diverter valve plate 141. The locking element is located between the outer and inner rings.

[0185] The inner ring is connected to the output shaft 224 of the drive member 20. When the drive member 20 rotates in the first direction, the locking element locks the inner ring and the outer ring. The drive member 20 simultaneously drives the inner ring and the outer ring to rotate in the first direction, thereby driving the water-air distribution valve plate 131 and the rotating diversion valve plate 141 to rotate in the first direction. When the drive member 20 rotates in the second direction, the locking element releases the inner ring and the outer ring from the locking state. The drive member 20 drives the inner ring to rotate independently in the second direction relative to the outer ring, thereby driving the rotating diversion valve plate 141 to rotate in the second direction independently.

[0186] The above is a series unidirectional linkage. In another configuration, it can also be a parallel unidirectional transmission, that is, the water-air distribution valve plate 131 and the rotating diversion valve plate 141 are respectively equipped with independent transmission components.

[0187] Specifically, the one-way transmission mechanism 33 includes a first one-way transmission member that is drivenly connected to the water-air distribution valve plate 131 and a second one-way transmission member that is drivenly connected to the rotating diversion valve plate 141.

[0188] In the washing state, the first one-way transmission component first drives the water-air distribution valve plate 131 to rotate, thereby isolating the control valve air inlet 113a from the valve water inlet 112a and all the diversion ports 11a. After this, the second one-way transmission component drives the rotating diversion valve plate 141 to rotate, so that the control valve water inlet 112a can be switched to be connected to at least one diversion port 11a, provided that the water-air distribution valve plate 131 has stopped rotating.

[0189] In the drying state, the first one-way transmission component first drives the water-air distribution valve plate 131 to rotate, thereby controlling the valve air inlet 113a to connect with at least one diversion port 11a and / or the valve water inlet 112a. After this, the second one-way transmission component drives the rotating diversion valve plate 141 to rotate, so that, provided the water-air distribution valve plate 131 stops rotating, the valve air inlet 113a can be switched to connect with at least one diversion port 11a.

[0190] The first and second one-way transmission components can adopt various one-way transmission forms. Specifically, at least one of them can be a ratchet 3311 transmission structure; or, at least one of them can be a one-way bearing transmission structure; or, the first and second one-way transmission components can adopt different structures, for example, one is a ratchet 3311 transmission structure and the other is a one-way bearing transmission structure.

[0191] The valve housing 11 is provided with a through channel, and the water-air distribution valve 10 also includes a drive member 20. The output shaft 224 of the drive member 20 passes through the through channel and is connected to both the first one-way drive member and the second one-way drive member.

[0192] When the driving member 20 is driven in the first direction, it drives the first one-way transmission member to move, thereby causing the water-air distribution valve plate 131 to rotate relative to the water-air distribution valve plate 141 in the first direction. When the driving member 20 is driven in the second direction opposite to the first direction, it drives the second one-way transmission member to move, thereby causing the rotating diversion valve plate 141 to rotate relative to the water-air distribution valve plate 131 in the second direction.

[0193] In one specific layout, the first one-way transmission member can be disposed outside the valve housing 11, while the second one-way transmission member is disposed inside the valve housing 11. One specific embodiment of the first one-way transmission member includes a first ratchet 3311 and a first pawl 3312. The first ratchet 3311 has an internal gear ring structure and is fixedly connected to the water-air distribution valve plate 131. The first pawl 3312 is disposed within the first ratchet 3311 and is connected to the output shaft 224 of the drive member 20.

[0194] When the first pawl 3312 rotates in the first direction, it engages with the first ratchet 3311, causing the first ratchet 3311 to rotate in the first direction, thereby causing the water-air distribution valve plate 131 to rotate in the first direction. When the first pawl 3312 rotates in the second direction, it disengages from the first ratchet 3311. At this time, the first pawl 3312 rotates independently in the second direction relative to the first ratchet 3311 without driving the water-air distribution valve plate 131.

[0195] Furthermore, the first ratchet 3311 has a first external connecting portion 3311c that is fixedly connected to the water-air distribution valve plate 131. A first mounting groove 3311a is formed on the inner side of the first ratchet 3311, and a first ratchet tooth 3311b that meshes with the first pawl 3312 is formed on the side wall of the first mounting groove 3311a.

[0196] The first unidirectional transmission component also includes a first pawl seat 3313, a first biasing member, and a first ratchet lower cover 3315. The first pawl seat 3313 is rotatably disposed in the first mounting groove 3311a and has a mating hole through which the output shaft 224 of the drive component 20 passes and is connected to the first pawl seat 3313. The first pawl 3312 is movably disposed between the first pawl seat 3313 and the first ratchet tooth 3311b. One end of the first biasing member is connected to the first pawl seat 3313, and the other end abuts against the first pawl 3312. The first ratchet lower cover 3315 is used to engage with the first ratchet 3311 to confine the first pawl seat 3313, the first pawl 3312, and the first biasing member within the first mounting groove 3311a.

[0197] The water-air distribution valve plate 131 is typically circular, with a first mounting hole in its center. The first external connecting part 3311c is a hollow shaft, whose spline connects to the first mounting hole to achieve reliable transmission.

[0198] Correspondingly, the second unidirectional transmission component may include a second ratchet 3311 and a second pawl 3312. The second ratchet 3311 has an internal gear ring structure and is fixedly connected to the rotating diverter valve plate 141. The second pawl 3312 is disposed inside the second ratchet 3311 and is connected to the output shaft 224 of the drive component 20.

[0199] Its working logic complements that of the first unidirectional transmission component: when the first pawl 3312 rotates in the second direction, it disengages from the first ratchet 3311. Simultaneously, when the second pawl 3312 rotates in the second direction, it engages with the second ratchet 3311, causing the second ratchet 3311 to rotate in the second direction, thereby causing the rotating diverter valve plate 141 to rotate in the second direction. Conversely, when the first pawl 3312 rotates in the first direction, it engages with the first ratchet 3311, while when the second pawl 3312 rotates in the first direction, it disengages from the second ratchet 3311, and the second pawl 3312 rotates independently in the first direction relative to the second ratchet 3311.

[0200] The detailed structure of the second one-way transmission member is similar to that of the first one-way transmission member. It includes a second ratchet 3311 with a second external connecting portion, a second mounting groove 3311a formed on the inner side of the second ratchet 3311, and a second ratchet tooth 3311b formed on the sidewall of the groove.

[0201] In addition, it includes a second pawl seat 3313, a second biasing member, and a second ratchet lower cover 3315. The second pawl seat 3313 is rotatably disposed in the second mounting groove 3311a, and the second pawl 3312 is movably disposed between the second pawl seat 3313 and the second ratchet tooth 3311b. The output shaft 224 of the drive member 20 is fixedly connected to the second pawl seat 3313. One end of the second biasing member is connected to the second pawl seat 3313, and the other end abuts against the second pawl 3312. The second ratchet lower cover 3315 is used to cooperate with the second ratchet 3311 to confine the second pawl seat 3313, the second pawl 3312, and the second biasing member within the second mounting groove 3311a.

[0202] The rotating diverter valve plate 141 is circular and has a second mounting hole. The second external connecting part is a hollow shaft, and its spline connects to the second mounting hole. Alternatively, the second ratchet 3311 and the rotating diverter valve plate 141 can also be designed as an integral component, in which case the lower cover 3315 of the second ratchet is connected to the second ratchet 3311.

[0203] In some embodiments, to ensure the sealing of the valve core assembly 12 when it rotates within the valve cavity 111a and to prevent water flow and air flow from crossing in unexpected paths, the water-air distribution valve 10 further includes a distribution valve sealing ring 1291 and a diversion valve sealing ring 1292.

[0204] The distribution valve sealing ring 1291 is fixedly disposed within the valve cavity 111a and extends circumferentially to the outer periphery of the water-air distribution valve plate 131. Its function is to seal the circumferential gap between the water-air distribution valve plate 131 and the cavity wall of the valve cavity 111a. Similarly, the diversion valve sealing ring 1292 is fixedly disposed within the valve cavity 111a and extends circumferentially to the outer periphery of the rotating diversion valve plate 141. Its function is to seal the circumferential gap between the rotating diversion valve plate 141 and the cavity wall of the valve cavity 111a.

[0205] By setting these two independent distribution valve sealing rings 1291 and diversion valve sealing rings 1292, the independence and sealing reliability of the water-air switching function and the fluid distribution function during operation can be ensured respectively, effectively isolating different chambers, which is the basis for achieving precise mode switching and diversion.

[0206] like Figure 10 and Figure 13As shown, in some embodiments, valve chamber 111a can be further divided into a water inlet valve chamber 111a2, an air inlet valve chamber 111a1, and a diversion valve chamber 111a3. The water inlet valve chamber 111a2 communicates with the valve inlet 112a. The air inlet valve chamber 111a1 is spaced apart from the water inlet valve chamber 111a2 and communicates with the valve air inlet 113a. The diversion valve chamber 111a3 communicates with the diversion port 11a. A water-air distribution valve plate 131 is located between the diversion valve chamber 111a3 and the water inlet valve chamber 111a2, and between the diversion valve chamber 111a3 and the air inlet valve chamber 111a1. The water-air distribution valve plate 131 is provided with a third flow port 131a. In the washing state, the third flow port 131a connects the water inlet valve chamber 111a2 and the diversion valve chamber 111a3. In the drying state, the third overflow port 131a connects the air inlet valve chamber 111a1 with the diversion valve chamber 111a3 and / or the water inlet valve chamber 111a2.

[0207] In some embodiments, the rotating diversion valve plate 141 is provided with at least one fourth flow port 141a. In the washing state, the rotating diversion valve plate 141 rotates circumferentially along the valve housing 11 and contacts the inner wall of the valve housing 11. Since the rotating diversion valve plate 141 is provided with at least one fourth flow port 141a, the at least one fourth flow port 141a rotates with the rotating diversion valve plate 141 to communicate with the valve inlet 112a and at least one diversion port 11a, so that the washing water can be diverted by the at least one fourth flow port 141a provided on the rotating diversion valve plate 141 to the target diversion port 11a, so as to flow to different spray arms, thereby performing the cleaning task on the tableware in different areas.

[0208] In the drying state, at least one fourth flow port 141a rotates with the rotating diversion valve plate 141 to connect with the valve air inlet 113a and at least one diversion port 11a. Hot air can be diverted by the at least one fourth flow port 141a set on the rotating diversion valve plate 141 to the target diversion port 11a, so as to flow to different spray arms, thereby performing cleaning tasks on tableware in different areas. This achieves multiple flow path combinations such as single diversion port 11a conduction and multiple diversion ports 11a simultaneous conduction. This flexibility can be adapted to different cleaning / drying scenarios (such as local key spraying and full-area coverage spraying), avoiding functional limitations caused by fixed flow paths.

[0209] The water-air switching component may further include at least one fixed valve plate 132. The fixed valve plate 132 is sealed to the cavity wall of the valve chamber 111a and is stacked on top of the water-air distribution valve plate 131, with their edges sealed together. The fixed valve plate 132 has a water inlet 132a communicating with the water inlet valve chamber 111a2 and an air inlet 132b communicating with the air inlet valve chamber 111a1 in the middle portion.

[0210] When the water-air distribution valve 131 is in the blocked position, the third flow port 131a is connected to the water inlet port 132a and the water-air distribution valve 131 blocks the air inlet port 132b. When the water-air distribution valve 131 is in the ventilated position, the third flow port 131a is connected to the air inlet port 132b and / or the water inlet port 132a.

[0211] In some embodiments, the drive unit 20 may also rotate only in a single direction (i.e., the first direction) to coordinate the control of the water-air switching unit and the fluid distribution unit, thereby realizing the switching and distribution of all functions in the washing and drying states.

[0212] Specifically, in the washing state, the drive unit 20 rotates along the first direction to the first angle range, drives the water-air switching component to control the valve air inlet 113a to isolate from the valve water inlet 112a and all the diversion ports 11a, and drives the fluid distribution component to control the valve water inlet 112a to switchably connect with at least one diversion port 11a, thereby realizing the distribution and spray control of washing water.

[0213] In the drying state, the drive unit 20 continues to rotate along the first direction to a second angle range different from the first angle range, driving the water-air switching component to control the air inlet 113a to connect with at least one diversion port 11a and / or the valve water inlet 112a, and driving the fluid distribution component to control the air inlet 113a to switchably connect with at least one diversion port 11a, thereby realizing the distribution and purging control of the drying airflow.

[0214] Specifically, the drive unit 20 employs a unidirectional, continuously rotating motor. The water-air distribution valve plate 131 and the rotating diversion valve plate 141 are stacked and can rotate independently. The output shaft 224 of the drive unit 20 drives the rotating diversion valve plate 141 to rotate continuously via a gear pair to switch the diversion port 11a. Simultaneously, a cam is fixedly mounted on the output shaft 224, and the cam profile has two spaced protrusions. A shift fork is hinged to the valve housing 11 in the middle; one end of the fork, through a roller and under the action of a spring, always conforms to the cam profile, while the other end drives the water-air distribution valve plate 131 to rotate. The rotating shaft of the water-air distribution valve plate 131 is equipped with a positioning mechanism consisting of a positioning ball and a positioning recess.

[0215] The working process is as follows: The drive unit 20 rotates in one direction. When the first protrusion of the cam pushes the shift fork, the shift fork drives the water and air distribution valve plate 131 to rotate to the drying position. At this time, the positioning ball engages with the corresponding recess and locks it. The cam continues to rotate to the return position, and the shift fork resets and disengages from the water and air distribution valve plate 131, which remains stationary. Subsequently, when the second protrusion of the cam pushes the shift fork, the shift fork drives the water and air distribution valve plate 131 back to the washing position and is locked again by the positioning mechanism. Throughout this process, the rotating diversion valve plate 141 is continuously driven to perform spray arm distribution.

[0216] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" 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 application 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, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0217] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0218] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0219] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0220] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A water-air distribution valve, characterized in that, Applied to a dishwasher, the dishwasher including multiple spray arms, the water / air distribution valve including: The valve housing has a valve inlet for receiving washing water, a valve inlet for receiving drying airflow, and multiple branch ports for corresponding communication with the multiple spray arms. The valve core assembly includes a water-air switching element and a fluid distribution element, both movably disposed within the valve housing; and A driving component is connected to both the water-air switching component and the fluid distribution component. In the washing state, the driving component drives the water-air switching component to control the valve air inlet to be isolated from the valve water inlet and all the branch ports, and drives the fluid distribution component to control the valve water inlet to be switchably connected to at least one of the branch ports; in the drying state, the driving component drives the water-air switching component to control the valve air inlet to be connected to at least one of the branch ports and / or the valve water inlet, and drives the fluid distribution component to control the valve air inlet to be switchably connected to at least one of the branch ports.

2. The water-air distribution valve according to claim 1, characterized in that, Also includes: A transmission mechanism, wherein the driving component is connected to at least one of the water-air switching component and the fluid distribution component via the transmission mechanism.

3. The water-air distribution valve according to claim 2, characterized in that, The water-air switching component is movably disposed within the valve housing in a direction away from or close to the valve air inlet, and is at least used to achieve on / off control between the valve air inlet and all the branch ports and the valve water inlet by movement.

4. The water-air distribution valve according to claim 3, characterized in that, The fluid distribution component is movably disposed within the valve housing, for controlling the connection between the valve inlet and at least one of the branch ports by movement during the washing state, and for controlling the connection between the valve air inlet and the valve inlet and / or at least one of the branch ports by movement during the drying state; or The fluid distribution component is rotatably disposed within the valve housing, and is used to control the connection between the valve inlet and at least one of the branch ports by rotation in the washing state, and to control the connection between the valve air inlet and the valve inlet and / or at least one of the branch ports by rotation in the drying state.

5. The water-air distribution valve according to claim 4, characterized in that, The water-air switching component includes a first air-blocking component. In the washing state, the first air-blocking component moves to the air-blocking position that closes the air inlet of the valve. In the drying state, the first air-blocking component moves to the air-ventilating position that opens the air inlet of the valve. The fluid distribution component includes a first diverting valve plate, the driving component is a first driving component, and the transmission mechanism includes: The linkage mechanism is located between the first air-blocking component and the first diverting valve plate; The first driving component drives the first diversion valve plate to move, and the first diversion valve plate drives the first air-blocking component to move between the air-blocking position and the air-venting position through the linkage mechanism.

6. The water-air distribution valve according to claim 5, characterized in that, Also includes: The first elastic element has two ends that abut against the first air-blocking element and the valve body, respectively. When not driven by the first driving member, the first elastic member drives the first air-blocking member to remain in the air-blocking position.

7. The water-air distribution valve according to claim 6, characterized in that, The linkage mechanism includes: A hook portion is disposed on one of the first diverter valve plate and the first air-blocking component; and The overlapping portion is provided on the other of the first diversion valve plate and the first air-blocking component; In the washing state, the hook portion and the overlapping portion are spaced apart so that the first elastic member can drive the first air-blocking member to remain in the air-blocking position; in the drying state, the overlapping portion, driven by the first driving member, moves the overlapping portion and the first air-blocking member from the air-blocking position to the ventilated position.

8. The water-air distribution valve according to claim 4, characterized in that, The water-air switching component includes a second air-blocking component. In the washing state, the second air-blocking component moves to the air-blocking position that closes the air inlet of the valve. In the drying state, the second air-blocking component moves to the air-ventilating position that opens the air inlet of the valve. The fluid distribution component includes a second flow divider valve plate, the driving component is a second driving component, and the transmission mechanism includes: The motion conversion mechanism has its input end connected to the output shaft of the second drive member and its output end connected to the second air-blocking member for transmission, and is used to convert the rotational motion of the second drive member into linear motion. The second driving member drives the second diverter valve plate to rotate, and the motion conversion mechanism drives the second air-blocking member to move between the air-blocking position and the air-venting position.

9. The water-air distribution valve according to claim 8, characterized in that, The second driving component includes a motor, and the second diverter valve plate is sleeved on the output shaft of the motor so as to drive the second diverter valve plate to rotate through the output shaft; The motion conversion mechanism includes a lead screw transmission mechanism, which includes a threaded lead screw and a transmission seat. The lead screw is linked to the output shaft of the motor, and the transmission seat is connected to the second air-blocking component to drive the second air-blocking component to move between the air-blocking position and the air-venting position.

10. The water-air distribution valve according to claim 9, characterized in that, The valve core assembly includes: The second elastic element has its two ends abutting against the second air-blocking element and the transmission seat respectively, and causes the second air-blocking element to tend to move toward the valve inlet.

11. The water-air distribution valve according to claim 10, characterized in that, The inner wall of the valve housing and one of the second air-blocking components are provided with a sliding part, and the other is provided with a limiting slide extending axially parallel to the output shaft. The sliding part is slidably disposed in the limiting slide.

12. The water-air distribution valve according to claim 11, characterized in that, One of the transmission seat and the second air-blocking component is provided with a guide portion, and the other is provided with a guide groove extending axially parallel to the output shaft. The guide portion and the guide groove can slide relative to each other.

13. The water-air distribution valve according to claim 2, characterized in that, The water-air switching component is rotatably disposed on the valve housing along the first direction, and is used to realize the on / off control between the air inlet of the valve and all the branch ports and the water inlet of the valve by rotation; The fluid distribution component is rotatably disposed on the valve housing at least along a second direction, for controlling the connection between the valve inlet and at least one of the branch ports by rotation in the washing state, and for controlling the connection between the valve air inlet and the valve inlet and / or at least one of the branch ports by rotation in the drying state. The first direction and the second direction are opposite.

14. The water-air distribution valve according to claim 13, characterized in that, The water-gas switching component includes a water-gas distribution valve plate; the fluid distribution component includes a rotating diverter valve plate; the transmission mechanism includes: The one-way transmission mechanism is connected to both the water-air distribution valve plate and the rotating diversion valve plate. In the washing state, the one-way transmission mechanism drives the water-air distribution valve to rotate in the first direction to control the valve air inlet to be isolated from the valve water inlet and all the diversion ports. Then, the one-way transmission mechanism drives the rotating diversion valve to rotate in the second direction to control the valve water inlet to be switchably connected to at least one of the diversion ports, provided that the water-air distribution valve stops rotating. In the drying state, the one-way transmission mechanism drives the water-air distribution valve plate to rotate along the first direction to control the valve air inlet to connect with at least one of the diversion ports and / or the valve water inlet. Then, the one-way transmission mechanism drives the rotating diversion valve plate to rotate along the second direction to control the valve air inlet to switchably connect with at least one of the diversion ports, provided that the water-air distribution valve plate stops rotating.

15. The water-air distribution valve according to claim 14, characterized in that, The one-way transmission mechanism includes a ratchet transmission assembly, which is connected to both the water-air distribution valve plate and the rotating diversion valve plate. Alternatively, the one-way transmission mechanism includes a one-way bearing assembly, which is connected in a transmission manner to both the water-air distribution valve plate and the rotating diversion valve plate.

16. The water-air distribution valve according to claim 15, characterized in that, The one-way transmission mechanism includes a ratchet transmission assembly, which includes: The ratchet, having an internal gear ring structure, is fixedly connected to the water-air distribution valve plate; and A pawl is located inside the ratchet, and a portion of its structure protrudes from the ratchet and connects to the rotating diverter valve plate. When the pawl rotates in the first direction, it engages with the ratchet and drives the ratchet to rotate in the first direction, thereby driving the water-air distribution valve plate and the rotating diversion valve plate to rotate in the first direction; when the pawl rotates in the second direction, it disengages from the ratchet and rotates independently of the ratchet in the second direction, thereby driving the rotating diversion valve plate to rotate in the second direction independently.

17. A dishwasher, characterized in that, include: The water-air distribution valve as described in any one of claims 1-16; The inner liner has a washing chamber for accommodating tableware; A water cup is located below the inner liner and communicates with the washing chamber; A circulating pump, with its inlet end connected to the water cup and its outlet end connected to the valve inlet; Multiple spray arms are disposed within the washing chamber and are connected to each of the multiple diversion ports; and The drying system is connected to the air inlet of the valve and is used to deliver drying airflow to the water-air distribution valve.

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