Water diverter valve and dishwasher

Abstract

The present application relates to a water diverter valve and a dishwasher, wherein the water diverter valve comprises a valve body and a paddle; the valve body is provided with an open water diverter chamber and a water inlet connected to the water diverter chamber, the water diverter chamber gradually shrinks from the opening of the water diverter chamber to the bottom of the water diverter chamber; the paddle cover is provided on the valve body and covers the opening of the water diverter chamber, and the paddle is provided with a water outlet connected to the water diverter chamber. The water diverter valve provided in the above scheme, by setting the water diverter chamber as a tapered structure, on the one hand, uses the side wall of the water diverter chamber to guide the water flow, and after the water flow enters the water diverter chamber, there is a tendency to flow along the side wall of the water diverter chamber toward the opening of the water diverter chamber under the inertia of the water flow velocity, thereby making it more conducive to the water flow to the water outlet and making the water flow smoother; on the other hand, the volume of the water diverter chamber is significantly reduced compared to when a cylindrical structure is adopted, so that the amount of water stored in the water diverter chamber is reduced, and thus the water stored in the water diverter chamber during use is reduced, thereby reducing the water consumption when the dishwasher is working.

Description

Technical Field

[0001] The present application relates to the technical field of kitchenware, and in particular to a water diversion valve and a dishwasher. Background Art

[0002] A dishwasher's water diverter valve is used to control water flow diversion and switching between multiple water channels. The valve opens or closes the water channel by rotating a water retaining plate, controlling the flow of water. By controlling the distribution of water flow, the dishwasher supplies water to different spray arms during different wash stages, thereby improving washing efficiency and conserving water.

[0003] However, the existing water diverter valve has the problem of large water flow resistance, which causes the pressure and flow of the water output from the washing pump to reach the spray arm and other cleaning components to be reduced. For example, under normal circumstances, the spray arm can form a high-speed rotating strong water flow under a certain pressure to flush the tableware in all directions. However, due to the large resistance of the water diverter valve, the water flow pressure reaching the spray arm is insufficient, the rotation speed of the spray arm slows down, and the water flow coverage and flushing force are reduced, making it difficult to effectively clean stubborn stains on the tableware, extending the cleaning time and reducing the cleaning efficiency. In addition, in order to overcome the large water flow resistance of the water diverter valve, the washing pump needs to consume more energy to maintain sufficient water flow pressure and flow, resulting in high energy consumption. Summary of the Invention

[0004] Based on this, it is necessary to provide a water diverter valve and a dishwasher to address the problems of low cleaning efficiency and high energy consumption caused by the large water flow resistance of the water diverter valve in the existing dishwasher.

[0005] A water diversion valve comprises a valve body and a paddle; the valve body is provided with an open water diversion chamber and a water inlet connected to the water diversion chamber, the water diversion chamber gradually extends from the opening of the water diversion chamber to the bottom of the water diversion chamber; the paddle cover is provided on the valve body and covers the opening of the water diversion chamber, and the paddle is provided with a water outlet connected to the water diversion chamber.

[0006] In one embodiment, the valve body has an inner wall surface defining the water diversion chamber, and at least the wall surface facing the water inlet of the inner wall surface shrinks from the opening of the water diversion chamber to the center of the bottom of the water diversion chamber.

[0007] In one embodiment, the valve body has an inner wall surface defining the water diversion chamber, and the inner wall surface shrinks toward the center of the bottom of the water diversion chamber at all locations in the circumferential direction to form a concave arc surface.

[0008] In one embodiment, the arc radius of the inner wall surface at the lowest point opposite to the water inlet is r, the radius of the inner wall surface at the opening is R, and r / R≤0.6.

[0009] In one embodiment, the valve body includes a main body and a water inlet portion connected to each other, the water diversion chamber is opened in the main body, the water inlet portion is connected to the circumferential surface of the main body, and the water inlet portion is opened on the end surface of the water inlet portion away from the main body portion, and the water inlet extends toward the interior of the valve body to form a water inlet channel, and the water inlet channel passes through the water inlet portion and penetrates into the main body to connect with the water diversion chamber.

[0010] In one embodiment, the water inlet channel includes an upstream section located at the water inlet portion and a downstream section located at the main body portion, and the main body portion has an inflow bottom surface constituting the bottom of the downstream section, and the inflow bottom surface is a plane.

[0011] In one embodiment, an end of the inflow bottom surface away from the water inlet is flush with the lowest point of the water diversion chamber.

[0012] In one embodiment, the inflow bottom surface is an inclined surface that is inclined upward toward the inside of the water diversion chamber.

[0013] In one embodiment, the main body further comprises an inflow top surface constituting the top of the upstream section, and the inflow top surface is a plane.

[0014] In one embodiment, the paddle has a bottom surface facing the water diversion chamber, and the bottom surface is flush with the inflow top surface.

[0015] In one embodiment, the water inlet channel further includes a connecting section between the upstream section and the downstream section, and the connecting section is a plane with a width gradually increasing toward the downstream section.

[0016] In one embodiment, the paddle has a bottom surface facing the water diversion cavity, the bottom surface is flush with the top of the water inlet, and the bottom surface is smoothly connected to the top side wall of the water inlet.

[0017] In one embodiment, the water outlet has a gradually expanding aperture toward the interior of the water diversion chamber.

[0018] In one embodiment, the paddle has a guide surface that defines the water outlet, and the guide surface includes at least a wall surface located at the bottom of the water outlet and close to the side of the center of the paddle, and the guide surface expands from the water outlet toward away from the water outlet.

[0019] In one embodiment, a portion of the guide surface is in a curved or inclined shape, and / or the guide surface is in a curved or inclined shape.

[0020] In one embodiment, the paddle is provided with a notch, the notch is located at the bottom of the water outlet and overlaps with the inner wall of the water diversion cavity, and the guide surface covers the bottom surface of the paddle except the notch.

[0021] In one embodiment, the guide surface and the tapered inner wall surface of the water diversion cavity opposite to the guide surface jointly form a bell-mouth structure that smoothly tapers toward the water outlet.

[0022] A dishwasher comprises the water diversion valve as described in any one of the above embodiments.

[0023] The water diversion valve provided in the above scheme, by setting the water diversion chamber to a tapered structure, on the one hand, uses the side wall of the water diversion chamber to guide the water flow. After the water flows into the water diversion chamber, there is a tendency to flow along the side wall of the water diversion chamber toward the open direction of the water diversion chamber under the inertia of the water flow velocity, which is more conducive to the water flow to the water outlet, making the water flow smooth, thereby avoiding water pressure loss in the process of flowing to the spray arm, so that the water pressure of the water flow at the spray arm is sufficient to flush the tableware in all directions, thereby ensuring the cleaning efficiency of the dishwasher; on the other hand, the volume of the water diversion chamber is significantly reduced compared to when a cylindrical structure is adopted, so that the amount of water stored in the water diversion chamber is reduced, and then the water stored in the water diversion chamber during use becomes less, thereby reducing the water consumption of the dishwasher during operation and improving the problem of high water consumption of existing dishwashers.

[0024] A water diversion valve includes a valve body, a paddle, a rotating shaft and a position signal component, wherein the paddle is rotatably arranged in the valve body; the rotating shaft is connected to the paddle to drive the paddle to rotate, the position signal component is located on the rotation path of the rotating shaft, and can trigger the pressing signal and release signal of the position signal component during the rotation of the rotating shaft, and the position of the paddle corresponding to the release signal triggered by the position signal component is calibrated as the zero point position of the paddle.

[0025] In one embodiment, the rotating shaft includes a shaft body and a trigger portion protruding from the circumference of the shaft body, and the position signal component includes a trigger button. The trigger button is located on the rotation path of the trigger portion, and during the rotation of the rotating shaft, the trigger portion is aligned with the trigger button in sequence from the head end to the end end, and the trigger portion has a release end surface located at the end, and the end of the release end surface away from the circumference of the shaft body is the endmost end of the trigger portion contacting the trigger button. When the trigger portion is aligned with the trigger button, it abuts to press the trigger button, and when the release end surface of the trigger portion is separated from the trigger button, the trigger button is released to trigger the position signal component.

[0026] In one embodiment, the release end surface extends obliquely from an end away from the circumference of the shaft body to a direction close to the circumference of the shaft body toward the head end of the trigger portion.

[0027] In one embodiment, the trigger portion includes a rising section located at the head end, and the length of the rising section in the radial direction of the shaft gradually increases toward the tail end.

[0028] In one embodiment, the ascending section has an abutting slope facing the position signal member, and the abutting slope is inclined at an upward slope from the head end to the tail end.

[0029] In one embodiment, the trigger portion includes a retaining segment located at the end direction of the rising segment, and the length of the retaining segment in the radial direction of the shaft body is uniform and equal to the maximum length of the rising segment in the radial direction of the shaft body.

[0030] A control method for a water diversion valve is applied to the water diversion valve, and the water diversion valve includes a paddle, a rotating shaft that rotates synchronously with the paddle, and a position signal component located on the rotation path of the rotating shaft. The control method for the water diversion valve includes the following steps: controlling the rotation of the rotating shaft to sequentially trigger a pressing signal and a release signal of the position signal component; calibrating the position of the paddle corresponding to the release signal triggered by the position signal component to serve as the zero point position of the paddle.

[0031] In one embodiment, the step of "calibrating the position of the paddle corresponding to when the position signal component triggers the release signal as the zero position of the paddle" includes the following steps: calculating the time interval between the position signal component triggering the release signal and triggering the press signal, and comparing it with the theoretical time deviation range; if the time interval is within the theoretical time deviation range, calibrating the position of the paddle corresponding to when the position signal component triggers the release signal as the zero position of the paddle; if the time interval is outside the theoretical time deviation range, reporting an error, or controlling the rotating shaft to continue rotating to sequentially trigger the press signal and release signal of the position signal component until the time interval is within the theoretical time deviation range.

[0032] In one embodiment, the theoretical time deviation range is 0.9 to 1.1 times the theoretical time interval between the position signal member triggering the release signal and triggering the press signal.

[0033] In one embodiment, the step of "if the time interval is outside the theoretical time deviation range, an error is reported, or the rotating shaft is controlled to continue rotating to sequentially trigger the press signal and the release signal of the position signal component until the time interval is within the theoretical time deviation range" includes the following steps: if the time interval is outside the theoretical time deviation range, determining whether the rotation time of the rotating shaft exceeds the set time; if so, an error is reported; if not, controlling the rotating shaft to continue rotating to sequentially trigger the press signal and the release signal of the position signal component until the time interval is within the theoretical time deviation range.

[0034] In one embodiment, the set time is n times the time required for the shaft to rotate a full circle, where n≥2.

[0035] In one embodiment, after the step of "calibrating the position of the paddle corresponding to when the position signal member triggers the release signal as the zero position of the paddle", the following step is also included: controlling the rotating shaft to rotate from the zero position of the paddle for a preset time to allow the paddle to reach the preset position. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Schematic diagram of the structure of the water diversion valve in one embodiment of the present application.

[0037] Figure 2 for Figure 1 Schematic diagram of the partially exploded structure of the middle water diversion valve.

[0038] Figure 3 for Figure 1 Schematic diagram of the exploded structure of the middle water diversion valve.

[0039] Figure 4 for Figure 2 Cross-section diagram of the middle water diversion valve Figure 1 .

[0040] Figure 5 for Figure 2 Cross-section diagram of the middle water diversion valve Figure 2 .

[0041] Figure 6 for Figure 1 Schematic diagram of the structure of the middle pick.

[0042] Figure 7 for Figure 1 Schematic cross-sectional view of the water flow channel inside the middle water diverter valve.

[0043] Figure 8 for Figure 1 Top view of the middle water diverter valve.

[0044] Figure 9 for Figure 1 Connection diagram of the middle water diverter valve and diverter cover.

[0045] Figure 10 for Figure 1 Schematic diagram of the matching state of the middle water diversion valve and the diversion cover, where: Figure 10 (a) is the matching state of the water diverter valve and the diverter cover; Figure 10 (b) is the second matching state of the water diverter valve and the diverter cover; Figure 10 (c) is the third matching state of the water diverter valve and the diverter cover; Figure 10 (d) in the figure is the fourth matching state of the water diverter valve and the diverter cover.

[0046] Figure 11 for Figure 1 Schematic diagram of the structure of the rotating shaft.

[0047] Figure 12 for Figure 1 Schematic diagram of the position of the rotating shaft and position signal parts Figure 1 .

[0048] Figure 13 for Figure 1 Schematic diagram of the position of the rotating shaft and position signal parts Figure 2 .

[0049] Figure 14 for Figure 1 Schematic diagram of the position of the rotating shaft and position signal parts Figure 3 .

[0050] Figure 15 This is a logic diagram of a control method for a water diversion valve in one embodiment of the present application.

[0051] Description of reference numerals:

[0052] 100, water diverter valve; 110, valve body; 111, main body; 1111, water diverter cavity; 1112, inflow bottom surface; 1113, inflow top surface; 1114, inner wall surface; 112, water inlet; 1121, water inlet; 113, water inlet channel; 1131, upstream section; 1132, downstream section; 1133, connecting section; 120, paddle; 121, water outlet; 122, bottom surface; 123, guide surface; 130, first sealing ring; 140, rotating shaft; 14 1. Shaft; 1411. Circumferential surface; 142. Trigger part; 1421. Release end surface; 1422. Rising section; 1423. Abutment slope; 1424. Holding section; 1425. Abutment arc surface; 150. Second sealing ring; 160. Position signal member; 161. Trigger button; 170. Cover; 180. Drive member; 190. Fastener; 200. Water cup; 210. Diverter cover; 211. First water inlet; 212. Second water inlet; 213. Third water inlet. DETAILED DESCRIPTION

[0053] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0054] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0055] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0056] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0057] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0058] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0059] In one embodiment of the present application, a dishwasher is provided for washing dishes. The dishwasher includes a water diverter valve 100 as described in any of the following embodiments, combined with Figure 1 and Figure 2 As shown, the dishwasher further includes a water cup 200 and a diverter cover 210 connected to the water cup 200. The diverter cover 210 has multiple water inlets. In this embodiment, the diverter cover 210 has three water inlets spaced apart and located in the same plane. For ease of description, they are named first water inlet 211, second water inlet 212, and third water inlet 213. For example, the first water inlet 211 can be connected to the lower spray arm of the dishwasher, the second water inlet 212 can be connected to the middle spray arm of the dishwasher, and the third water inlet 213 can be connected to the top spray arm and the zone wash spray arm of the dishwasher. The first water inlet 211, the second water inlet 212 and the third water inlet 213 of the water diverter valve 100 and the diverter cover 210 can be fluidically connected in an on-off manner to realize the control of water path diversion and multi-water path switching. The water inlet is opened or covered by rotating the following paddle 120 to realize the control of the on-off and diversion of the water path, so as to control the distribution of water flow and enable the dishwasher to supply water to the spray arms in different areas during different washing stages.

[0060] See Figure 3 , Figure 3 A structural diagram of a water diverter valve 100 in an embodiment of the present application is shown. The water diverter valve 100 provided in an embodiment of the present application can be applied to the above-mentioned dishwasher, and can also be applied to other fields without limitation.

[0061] Combine Figure 1 and Figure 2 As shown, the water diverter valve 100 includes a valve body 110 and a paddle 120 . The paddle 120 is rotatably arranged relative to the valve body 110 , so that the water passage can be opened, closed, and diverted by the rotation of the paddle 120 .

[0062] like Figure 2 and Figure 3 As shown, the valve body 110 is provided with an open water diversion chamber 1111 and a water inlet 1121 connected to the water diversion chamber 1111. Figure 4 and Figure 5 As shown, Figure 4 and Figure 5 A cross-sectional schematic diagram of the water diversion valve 100 is shown, in which the water diversion chamber 1111 gradually extends from an opening of the water diversion chamber 1111 to the bottom of the water diversion chamber 1111 .

[0063] like Figures 2 to 5 As shown, the paddle 120 is covered on the valve body 110 and covers the opening of the water diversion chamber 1111. The paddle 120 is provided with a water outlet 121 connected to the water diversion chamber 1111, so that the water inlet 1121, the water diversion chamber 1111 and the water outlet 121 form a flow channel for the water flow. Figure 3 As shown, in this embodiment, the water outlet 121 of the paddle 120 extends from the outer peripheral edge of the paddle 120 toward the center of the paddle 120, so that a portion of the circumference of the paddle 120 defines the water outlet 121. Therefore, the paddle 120 does not completely cover the outer peripheral edge of the open water diversion cavity 1111, and the portion of the paddle 120 that does not cover the open water diversion cavity 1111 forms the water outlet 121. In other embodiments, the water outlet 121 may also be a hole formed in the paddle 120 and extending through the paddle 120 in the axial direction of the paddle 120.

[0064] The water diversion valve 100 provided in the above scheme, by setting the water diversion chamber 1111 to a tapered structure, on the one hand, uses the side wall of the water diversion chamber 1111 to guide the water flow. After the water flows into the water diversion chamber 1111, it has a tendency to flow along the side wall of the water diversion chamber 1111 toward the open direction of the water diversion chamber 1111 under the inertia of the water flow velocity, which is more conducive to the water flowing to the water outlet 121, making the water flow smooth, thereby avoiding the water pressure loss in the process of the water flow flowing to the spray arm, so that the water pressure of the water flow at the spray arm is sufficient to flush the tableware in all directions, thereby ensuring the cleaning efficiency of the dishwasher; on the other hand, the volume of the water diversion chamber 1111 is significantly reduced compared to the case of adopting a cylindrical structure, so that the amount of water stored in the water diversion chamber 1111 is reduced, and then the water stored in the water diversion chamber 1111 during use becomes less, thereby reducing the water consumption of the dishwasher during operation and improving the problem of high water consumption of existing dishwashers.

[0065] like Figure 4 and Figure 5As shown, in one embodiment, the valve body 110 has an inner wall surface 1114 that defines a water diversion chamber 1111. At least the wall surface of the inner wall surface 1114 facing the water inlet 1121 shrinks from the opening of the water diversion chamber 1111 to the center of the bottom of the water diversion chamber 1111, so as to make the flow channel in the water diversion valve 100 smoother, reduce the angles, sharp corners and sudden changes during water flow, reduce the resistance during water flow, and reduce the pressure loss of water flow. When the water flows, the water needs to pass through the inner wall surface 1114 opposite the water inlet 1121. The wall surface near the water inlet 1121 has a limited diversion effect. It can shrink from the opening of the water diversion chamber 1111 to the center of the bottom of the water diversion chamber 1111, or it can not shrink. More preferably, the wall surface near the water inlet 1121 also shrinks from the opening of the water diversion chamber 1111 to the center of the bottom of the water diversion chamber 1111.

[0066] like Figure 4 and Figure 5 As shown, in one embodiment, the inner wall surface 1114 shrinks toward the center of the bottom of the water diversion chamber 1111 at all points in the circumferential direction, so that the inner wall surface 1114 is a concave arc surface, so that the flow channel in the water diversion valve 100 is smoother, and the angles, sharp corners and sudden changes during water flow are reduced, the resistance during water flow is reduced, and the water flow pressure loss is reduced. In other embodiments, the inner wall surface 1114 of the water diversion chamber 1111 can also adopt an inclined slope, which can also play a role in guiding the water flow. In this embodiment, the water diversion chamber 1111 in the valve body 110 is close to a bowl shape, and the concave arc surface is obvious, so that the amount of water stored in the water diversion chamber 1111 is not too small, thereby avoiding a decrease in the water pressure of the spray arm.

[0067] In one embodiment, the arc radius of the lowest point of the inner wall 1114, located opposite the water inlet 1121, is r, and the radius of the open portion of the inner wall 1114 is R, with r / R ≤ 0.6, to more effectively guide the water flow. It should be noted that the cross-section of the water diversion chamber 1111 is not limited to a circular structure. When the cross-section of the water diversion chamber 1111 is not circular, the bottom area of ​​the water diversion chamber is converted to a circular radius of the same area.

[0068] like Figure 4 and Figure 5 As shown in one embodiment, the valve body 110 includes a main body 111 and a water inlet 112 connected to each other. In this embodiment, the main body 111 and the water inlet 112 are an integrated structure, but in other embodiments, the main body 111 and the water inlet 112 can also be connected as a whole by welding or other connection methods. Figure 4 and Figure 5 As shown, the water diversion chamber 1111 is opened in the main body 111. Figure 8 As shown, in Figure 8The dotted arrows in the figure indicate the direction of water flow. The water inlet 112 is connected to the circumference of the main body 111. A water inlet 1121 is defined on the end of the water inlet 112, away from the main body 111. This allows water to flow through the side of the water diversion chamber 1111 via the water inlet 1121, ensuring smooth water flow. Furthermore, the water inlet 1121 extends toward the interior of the valve body 110 to form a water inlet channel 113. This channel 113 penetrates the water inlet 112 and extends into the main body 111 to connect to the water diversion chamber 1111. This channel 113 forms part of the flow path within the water diversion valve 100, providing water flow.

[0069] like Figure 4 and Figure 5 As shown, in one embodiment, the water inlet channel 113 includes an upstream section 1131 located at the water inlet portion 112 and a downstream section 1132 located at the main body 111. The main body 111 has an inflow bottom surface 1112 that constructs the bottom of the downstream section 1132. The inflow bottom surface 1112 is a plane so that the cross-sectional area of ​​the downstream section 1132 in the axial direction perpendicular to the water inlet 1121 is larger than when the cross-section is circular, so that water can flow smoothly into the water diversion chamber 1111 from the water inlet channel 113, avoiding hydraulic losses caused by the sudden increase in the size of the flow channel to form vortices.

[0070] like Figure 5 As shown, in one embodiment, the end of the inlet bottom surface 1112 away from the water inlet 1121 is flush with the lowest point of the water diversion chamber 1111. This ensures smooth flow of water from the water inlet channel 113 into the water diversion chamber 1111, avoids increased water flow resistance due to height differences, and reduces water pressure loss. In this embodiment, the lowest point of the water diversion chamber 1111 is the center of the bottom surface 122 of the water diversion chamber 1111.

[0071] like Figure 5 As shown, in one embodiment, the inlet bottom surface 1112 is an inclined surface inclined upward toward the inside of the water diversion chamber 1111, so as to have an upward diversion effect on the water flow, thereby making it easier for the water flow to flow toward the water outlet 121 along the inner wall surface 1114 that defines the water diversion chamber 1111, which is more conducive to the water flow toward the water outlet 121 and makes the water flow smoothly.

[0072] like Figure 5 As shown, in one embodiment, the main body 111 also has an inflow top surface 1113 constructed on the top of the upstream section 1131, and the inflow top surface 1113 is a plane, so that the downstream section 1132 has a flat cylindrical structure with flat tops and bottoms and curved surfaces on both sides in a cross-section perpendicular to the axial direction of the water inlet 1121. At this time, when the water flows from the water inlet channel 113 into the water diversion chamber 1111, the sudden change of the flow channel structure can be avoided, which facilitates the connection with the component that limits the top of the water diversion chamber 1111.

[0073] like Figure 4 and Figure 5 As shown, in one embodiment, the paddle 120 has a bottom surface 122 arranged toward the water diversion chamber 1111, and the bottom surface 122 is flush with the inlet top surface 1113, so that water can flow smoothly into the water diversion chamber 1111 from the water inlet channel 113, avoiding hydraulic loss caused by the sudden increase in the size of the flow channel to form a vortex.

[0074] like Figure 4 and Figure 5 As shown, in one embodiment, the water inlet channel 113 further includes a connecting section 1133 located between the upstream section 1131 and the downstream section 1132. The connecting section 1133 is a plane with a width gradually increasing toward the downstream section 1132. The width refers to the dimension in a direction perpendicular to the axis of the water inlet channel 113 and parallel to the plane of the inflow surface. This allows the water inlet channel 113 to gradually transition from the circular cross-section of the water inlet 1121 to the flat cross-section structure of the downstream section 1132.

[0075] In other embodiments, the bottom surface 122 is flush with the top of the water inlet 1121, and the bottom surface 122 is smoothly connected to the top side wall of the water inlet 1121. At this time, the top of the water inlet 1121 can be a flat surface or an arc-shaped surface. The bottom surface 122 and the top structure of the water inlet 1121 are similar to each other to be smoothly connected. At this time, the water flow can also flow smoothly into the water diversion chamber 1111 from the water inlet channel 113.

[0076] On the other hand, the bottom surface 122 of the paddle 120 is flush with the top of the water inlet 1121, so that the thickness of the paddle 120 itself occupies the space at the top of the water diversion chamber 1111, and the bottom surface 122 participates in defining the size and shape of the flow channel of the water flow, so that the amount of water stored in the water diversion chamber 1111 is further reduced, and thus less water is stored in the water diversion chamber 1111 during use, thereby reducing the water consumption of the dishwasher during operation and improving the problem of high water consumption of existing dishwashers.

[0077] like Figures 4 to 6 As shown, in one embodiment, the aperture of the water outlet 121 gradually expands in the direction toward the inside of the water diversion chamber 1111, so that the water flow in the water diversion chamber 1111 is smoother when flowing to the water outlet 121, avoiding interference with the water flow due to the protruding edge of the water outlet 121, thereby reducing water flow resistance and reducing water flow pressure loss.

[0078] like Figures 4 to 6As shown, in one embodiment, the paddle 120 has a guide surface 123 that defines the water outlet 121. The guide surface 123 includes at least a wall surface located at the bottom of the water outlet 121 and close to the side of the center of the paddle 120. The guide surface 123 expands from the water outlet 121 toward the direction away from the water outlet 121. The guide surface 123 participates in defining the flow channel of the water flow, so that the water flow in the water-dividing cavity 1111 is smoother when flowing to the water outlet 121, thereby reducing the water flow resistance and reducing the water flow pressure loss.

[0079] In one embodiment, a portion of the guide surface 123 is in an arc or inclined shape, so as to guide the water flow in the water diversion chamber 1111 to a certain extent when it flows to the water outlet 121, reduce the water flow resistance, make the water flow smoother, and reduce the water flow pressure loss.

[0080] In one embodiment, the guide surface 123 is in the shape of an arc or a slope. Figures 4 to 6 As shown, in this embodiment, the guide surface 123 is an outwardly convex arc surface, which makes the water flow in the water diversion cavity 1111 smoother when flowing to the water outlet 121, thereby reducing water flow resistance and reducing water flow pressure loss. In other embodiments, the guide surface 123 can also be an inclined slope.

[0081] In one embodiment, the paddle 120 is provided with a notch, which is located at the bottom of the water outlet 121 and overlaps with the inner wall surface 1114 of the water diversion chamber 1111. The guide surface 123 covers the bottom surface 122 of the paddle 120 except the notch. At this time, the bottom of the open opening of the water diversion chamber 1111 covered by the paddle 120 is the guide surface 123, thereby achieving a better diversion effect.

[0082] like Figure 7 As shown, in one embodiment, the guide surface 123 and the tapered inner wall surface 1114 of the water diversion chamber 1111 opposite to the guide surface 123 are jointly enclosed to form a trumpet-shaped structure that smoothly tapers toward the water outlet 121, so that the water flow in the water diversion chamber 1111 is smoother when flowing to the water outlet 121, thereby reducing the water flow resistance and reducing the water flow pressure loss.

[0083] like Figures 3 to 5 As shown, in some embodiments, the water diverter valve 100 further includes a first sealing ring 130, which is disposed at the connection between the paddle 120 and the valve body 110 and is used to prevent water leakage between the paddle 120 and the valve body 110. The first sealing ring 130 can be a rubber ring, etc., without limitation.

[0084] like Figures 3 to 5As shown, in some embodiments, the water diverter valve 100 further includes a driving member 180 and a rotating shaft 140 connected to the driving member 180. The driving member 180 is used to drive the rotating shaft 140 to rotate. The end of the rotating shaft 140 away from the driving member 180 passes through the valve body 110 and is connected to the paddle 120, so that the paddle 120 rotates relative to the valve body 110 along with the rotating shaft 140. In this embodiment, the water diverter valve 100 further includes a fastener 190, which securely connects the paddle 120 and the rotating shaft 140 so that the paddle 120 and the rotating shaft 140 rotate synchronously. In this embodiment, the fastener 190 is a fastening screw, which is not limited to this.

[0085] like Figures 3 to 5 As shown, in some embodiments, the water diverter valve 100 further includes a second sealing ring 150, which is located at the position where the rotating shaft 140 passes through the valve body 110 to prevent water leakage at the position where the rotating shaft 140 passes through the valve body 110. The second sealing ring 150 can be a rubber ring, etc., without limitation.

[0086] like Figures 3 to 5 As shown, in some embodiments, the water diverter valve 100 further includes a cover 170 . The cover 170 is connected to one end of the valve body 110 close to the driving member 180 and is used to fix the position of the driving member 180 .

[0087] Combine Figure 10 , Figure 10 FIG. 1 shows a schematic diagram of the cooperation state of the water diversion valve 100 and the diversion cover 210 in one embodiment of the present application, wherein: Figure 10 (a) is the first matching state of the water diverter valve 100 and the diverter cover 210; Figure 10 (b) is the second matching state of the water diversion valve 100 and the diversion cover 210; Figure 10 (c) is the third matching state of the water diverter valve 100 and the diverter cover 210; Figure 10 (d) represents the fourth coordinated state of the water diverter valve 100 and the diverter cover 210. This specification uses the example of the first water inlet 211 being connected to the lower spray arm of a dishwasher, the second water inlet 212 being connected to the middle spray arm, and the third water inlet 213 being connected to the top spray arm and the zone wash spray arm of the dishwasher.

[0088] In this embodiment, the paddle 120 is used to define the circumference of the water outlet 121 as a continuously concave and convex arc surface to adapt to the different water outlets defined by the diverter cover 210 in the dishwasher described above, but this is not intended to be limiting. In this embodiment, the distances between the third water outlet 213 and the first water outlet 211, and between the third water outlet 213 and the second water outlet 212, are both smaller than the distance between the second water outlet 212 and the first water outlet 211. This allows the water outlet 121 of the paddle 120 to be positioned selectively between the first water outlet 211, the second water outlet 212, and the third water outlet 213, or simultaneously between the first water outlet 211 and the second water outlet 212.

[0089] like Figure 10 As shown in (a), when the water outlet 121 of the paddle 120 is aligned with the first water outlet 211 and the second water outlet 212, the paddle 120 blocks the third water outlet 213. At this time, the lower spray arm and the middle spray arm of the dishwasher discharge water, and the dishwasher is in full-cavity washing mode with the upper spray arm and the middle spray arm discharging water at the same time. Figure 10 As shown in (b), when the water outlet 121 of the paddle 120 is aligned with the second water outlet 212, the paddle 120 blocks the first water outlet 211 and the third water outlet 213. At this time, the middle spray arm of the dishwasher discharges water, and the dishwasher is in the middle spray arm mode. Figure 10 As shown in (c), when the water outlet 121 of the paddle 120 is aligned with the third water outlet 213, the paddle 120 blocks the second water outlet 212 and the first water outlet 211. At this time, the regional wash spray arm and the top spray arm of the dishwasher start to flow water, and the dishwasher is in the regional enhanced wash and top spray mode. Figure 10 As shown in (d), when the water outlet 121 of the paddle 120 is aligned with the first water outlet 211, the paddle 120 blocks the second water outlet 212 and the third water outlet 213. At this time, the lower spray arm of the dishwasher discharges water, and the dishwasher is in the lower spray mode.

[0090] like Figures 3 to 5 As shown, in some embodiments, the water diverter valve 100 further includes a position signal member 160, which is located on the rotation path of the rotating shaft 140, so that the position signal member 160 is triggered when the rotating shaft 140 is at a specific position, thereby confirming the position of the paddle 120 that rotates synchronously with the rotating shaft 140 through the signal of the position signal member 160.

[0091] Combine Figures 11 to 14As shown, during the rotation of the rotating shaft 140, the pressing signal and the release signal of the position signal member 160 can be triggered. The corresponding position of the paddle 120 when the position signal member 160 triggers the release signal is calibrated as the zero position of the paddle 120, so as to clearly locate the rotation angle of the rotating shaft 140 at this time, and thus accurately indicate the position of the paddle 120 at this time, and make the position of the paddle 120 at this time the zero position of the rotation of the paddle 120. Based on this as a reference, the rotating shaft 140 is controlled to rotate to a specific angle, so that the paddle 120 can be accurately controlled to rotate to a specific position, thereby realizing accurate indication of the position of the paddle 120, thereby avoiding water flow conflict or even water leakage caused by inaccurate position of the paddle 120. Compared with the zero point position of the paddle 120 when the position signal member 160 triggers the press signal, the corresponding position of the paddle 120 is more accurate, especially in the press-type signal trigger taking the position signal member 160 as an example. When pressing the trigger button 161, an inclined surface or an arc surface is usually required as a guide surface, otherwise the pressing direction force cannot be applied to the trigger button 161. Then the time node when the position signal member 160 triggers the press signal will have a certain range. At this time, the corresponding position of the paddle 120 at the time node when the position signal member 160 triggers the press signal is also a certain angle range, so the zero point position of the paddle 120 will be inaccurate.

[0092] In this embodiment, the position signal member 160 is located on one side of the rotating shaft 140 and is fixed. When the rotating shaft 140 rotates, the relative position between the trigger portion 142 and the position signal member 160 changes, thereby triggering the position signal member 160 .

[0093] Combine Figure 11 As shown, Figure 11 The structure of the rotating shaft 140 in the water diversion valve 100 in one embodiment of the present application is shown. The rotating shaft 140 includes a shaft body 141 and a trigger portion 142 protruding from the peripheral surface 1411 of the shaft body 141. Under the drive of the driving member 180, the rotating shaft 140 rotates around the axis of the shaft body 141 itself. Figure 1 As shown, one end of the rotating shaft 140 away from the driving member 180 passes through the center of the valve body 110 to connect with the paddle 120. Figure 1 As shown, in this embodiment, the water diversion valve 100 further includes a sealing ring sleeved on the outer periphery of the shaft body 141 to seal the gap between the shaft body 141 and the valve body 110 to prevent water inside the water diversion chamber 1111 from leaking.

[0094] like Figure 1 As shown, the water diversion valve 100 further includes a cover 170 , and the position signal member 160 is fixedly connected to the cover 170 to prevent the position signal member 160 from shifting and interfering with the triggering of the position signal member 160 .

[0095] Combine Figures 12 to 14As shown, the position signal member 160 includes a trigger button 161, and the trigger button 161 has Figure 4 The pressing state shown in FIG. 1 shows the trigger button 161, which triggers the pressing signal. Figure 5 The released state is shown, at which time the trigger button 161 triggers the release signal.

[0096] In this manual, Figures 12 to 14 From the perspective of FIG, the rotating shaft 140 rotates counterclockwise, but this is only for the convenience of explanation and is not intended to be limiting. In other embodiments, the rotating direction of the rotating shaft 140 is not limited. Figure 12 、 Figure 13 and Figure 14 The positional relationship between the trigger portion 142 and the trigger button 161 during the rotation of the shaft 140 is shown in sequence. Obviously, during the rotation of the shaft 140, the trigger portion 142 is aligned with the trigger button 161 from the beginning to the end. It can be understood that Figures 12 to 14 From the perspective of the diagram, the head end is the right side and the tail end is the left side, but this is not a limitation. In actual application, the rotation direction of the shaft 140 and different perspectives are used for independent judgment.

[0097] like Figures 11 to 14 As shown, the trigger portion 142 has a release end surface 1421 at the end thereof. The end of the release end surface 1421 away from the circumferential surface 1411 of the shaft body 141 is the end of the trigger portion 142 contacting the trigger button 161 .

[0098] like Figures 12 to 14 As shown, the trigger button 161 is located on the rotation path of the trigger portion 142, but the trigger button 161 is located outside the circumference 1411 of the shaft body 141, and there is no contact between the shaft body 141 and the trigger button 161. Figure 12 and Figure 13 As shown, when the trigger portion 142 is aligned with the trigger button 161, it abuts against the trigger button 161 to press the trigger button 161. Figure 14 As shown, when the release end surface 1421 of the trigger portion 142 is separated from the trigger button 161 , the trigger button 161 is released to trigger the position signal member 160 .

[0099] When the end of the release end face 1421 away from the circumferential surface 1411 of the shaft body 141 contacts the trigger button 161, the rotating shaft 140 continues to rotate and the trigger button 161 is released immediately without other components or manufacturing and assembly errors interfering with the release timing of the trigger button 161, so that the release timing of the trigger button 161 is specific and short, which is close to the moment after the end of the release end face 1421 away from the circumferential surface 1411 of the shaft body 141 contacts the trigger button 161.

[0100] When the trigger button 161 is released, the position signal member 160 is triggered. The release signal of the trigger button 161 when released serves as a signal that the position signal member 160 is triggered. It can be clearly considered that when the position signal member 160 is triggered, that is, the trigger signal of the trigger button 161 when released, the time is the moment after the end of the release end face 1421 away from the circumferential surface 1411 of the shaft body 141 contacts the trigger button 161. It can clearly locate the rotation angle of the trigger part 142 and the shaft body 141 at this time, and thus can accurately indicate the position of the paddle 120 at this time, and can make the position of the paddle 120 at this time the zero point position of the rotation of the paddle 120. Based on this as a reference, controlling the rotation of the rotating shaft 140 to a specific angle can accurately control the paddle 120 to rotate to a specific position, thereby realizing accurate indication of the position of the paddle 120, thereby avoiding water flow conflict or even water leakage caused by inaccurate position of the paddle 120.

[0101] like Figures 12 to 14 As shown, in one embodiment, the release end surface 1421 extends obliquely from an end away from the circumferential surface 1411 of the shaft body 141 to a direction closer to the circumferential surface 1411 of the shaft body 141, toward the head end of the trigger portion 142. In this case, the release end surface 1421 does not protrude further than the end away from the circumferential surface 1411 of the shaft body 141, thereby preventing the release end surface 1421 from contacting the trigger button 161 and prolonging the time range for the trigger button 161 to be released. This allows the trigger button 161 to be released immediately upon separation from the end away from the circumferential surface 1411 of the shaft body 141. In other embodiments, the release end surface 1421 may also be arranged parallel to a radial direction of the shaft body 141. In this case, the end away from the circumferential surface 1411 of the shaft body 141 of the release end surface 1421 is still the end of the trigger portion 142 that contacts the trigger button 161.

[0102] like Figures 11 to 14 As shown, in one embodiment, the trigger portion 142 has a rising section 1422 located at the head end, and the length of the rising section 1422 in the radial direction of the shaft 141 gradually increases toward the end, so that the trigger portion 142 gradually contacts and abuts against the trigger button 161, thereby pressing the trigger button 161.

[0103] like Figures 11 to 14 As shown, in one embodiment, the rising section 1422 includes an abutment slope 1423 toward the position signal member 160, and the abutment slope 1423 is inclined at an upward slope from the head end to the end end, so that the abutment slope 1423 can convert the circumferential force of the rotating shaft 140 during the rotation process into a pressing force on the trigger button 161, thereby realizing the pressing of the trigger button 161.

[0104] like Figures 11 to 14As shown, in one embodiment, the trigger portion 142 includes a holding segment 1424 located at the end direction of the rising segment 1422, and the holding segment 1424 is between the rising segment 1422 and the release end face 1421. The length of the holding segment 1424 in the radial direction of the shaft body 141 is uniform and equal to the maximum length of the rising segment 1422 in the radial direction of the shaft body 141, so as to maintain the pressure on the trigger button 161, so that the trigger button 161 remains in a pressed state for a certain period of time after being pressed, and then released, so as to more clearly capture the moment when the trigger button 161 is released.

[0105] like Figures 11 to 14 As shown, in one embodiment, the trigger portion 142 includes an abutting arc surface 1425 located in the retaining section 1424, and the abutting arc surface 1425 is used to abut the trigger button 161. When the trigger portion 142 rotates with the shaft 141, the abutting arc surface 1425 maintains the pressure on the trigger button 161, so that the trigger button 161 remains in the pressed state for a certain period of time after being pressed, and then released, so as to more clearly capture the moment when the trigger button 161 is released.

[0106] like Figure 15 As shown, the present application also provides a control method for a water diverter valve 100, which is applied to the water diverter valve 100, which can be the water diverter valve 100 in any of the above embodiments, or the water diverter valve 100 in the prior art. The water diverter valve 100 applied by this method includes a paddle 120 and a rotating shaft 140 that rotates synchronously with the paddle 120, and also includes a position signal component 160 located on the rotation path of the rotating shaft 140.

[0107] like Figure 15 As shown, the control method of the water diverter valve 100 includes the following steps:

[0108] S10: Controlling the rotation of the rotating shaft 140 to sequentially trigger the pressing signal and the releasing signal of the position signal member 160. In actual application, the driving member 180 drives the rotating shaft 140 to rotate. In this embodiment, the rotating shaft 140 includes a triggering portion 142 for triggering the pressing signal and the releasing signal of the position signal member 160. At this time, the triggering portion 142 approaches, abuts, and releases the position signal member 160 due to the rotation of the rotating shaft 140. During the process of the rotating shaft 140 rotating one circle, the triggering portion 142 will cause the position signal member 160 to trigger a pressing signal and a releasing signal.

[0109] S20: The corresponding position of the paddle 120 when the calibration position signal member 160 triggers the release signal is the zero position of the paddle 120, so as to clearly locate the rotation angle of the trigger part 142 and the shaft body 141 at this time, thereby accurately indicating the position of the paddle 120 at this time, and making the position of the paddle 120 at this time the zero position of the rotation of the paddle 120. By controlling the rotating shaft 140 to rotate a specific angle based on this, the paddle 120 can be accurately controlled to rotate to a specific position, thereby realizing accurate indication of the position of the paddle 120, thereby avoiding water flow conflicts or even water leakage problems caused by inaccurate position of the paddle 120. Compared with the zero point position of the paddle 120 when the position signal member 160 triggers the press signal, the corresponding position of the paddle 120 is more accurate, especially in the press-type signal trigger taking the position signal member 160 as an example. When pressing the trigger button 161, an inclined surface or an arc surface is usually required as a guide surface, otherwise the pressing direction force cannot be applied to the trigger button 161. Then the time node when the position signal member 160 triggers the press signal will have a certain range. At this time, the corresponding position of the paddle 120 at the time node when the position signal member 160 triggers the press signal is also a certain angle range, so the zero point position of the paddle 120 will be inaccurate.

[0110] like Figure 15 As shown, in one embodiment, step “S20: calibrating the position of the paddle 120 corresponding to when the position signal member 160 triggers the release signal, as the zero position of the paddle 120” includes the following steps:

[0111] S21: Calculate the time interval between the position signal element 160 triggering the release signal and triggering the press signal, and compare it with the theoretical time deviation range.

[0112] Under normal circumstances, during one rotation of the rotating shaft 140, the trigger unit 142 causes the position signal member 160 to sequentially trigger a press signal and a release signal. The time interval between the two is related to the structure of the trigger unit 142 itself and the angular velocity at which the driving member 180 drives the rotating shaft 140 to rotate. During use, the structure of the trigger unit 142 itself does not change. Therefore, the theoretical time interval between the press signal and the release signal, i.e., the theoretical time interval, can be calculated based on the angular velocity of the rotating shaft 140. In one embodiment, the theoretical time deviation range is 0.9 to 1.1 times the theoretical time interval between the position signal member 160 triggering the release signal and triggering the press signal. This allows for an error in the operation of the rotating shaft 140 and the position signal member 160 to avoid problems such as excessive installation precision and high costs.

[0113] S22: If the time interval is within the theoretical time deviation range, the position of the paddle 120 corresponding to when the position signal member 160 triggers the release signal is calibrated as the zero position of the paddle 120. At this time, the rotation of the shaft 140 is normal, and the corresponding position of the paddle 120 when the position signal member 160 triggers the release signal can be directly determined to be accurate. In this case, the position of the paddle 120 corresponding to when the position signal member 160 triggers the release signal is calibrated as the zero position of the paddle 120, which is accurate and reliable.

[0114] S23: If the time interval is outside the theoretical time deviation range, an error is reported, or the control shaft 140 continues to rotate to sequentially trigger the pressing signal and releasing signal of the position signal member 160 until the time interval is within the theoretical time deviation range. This results in either successfully calibrating the zero position of the paddle 120 or reporting a machine error.

[0115] like Figure 9 As shown, in one embodiment, step "S23: if the time interval is outside the theoretical time deviation range, an error is reported, or the control shaft 140 continues to rotate to sequentially trigger the pressing signal and the releasing signal of the position signal member 160 until the time interval is within the theoretical time deviation range" includes the following steps:

[0116] S231: If the time interval is outside the theoretical time deviation range, determine whether the rotation time of the rotating shaft 140 exceeds the set time. Repeated attempts are made to verify whether the time interval between the press signal and the release signal is within the theoretical time deviation range, avoiding the problem of frequent and unnecessary error reports caused by a single abnormality.

[0117] In one embodiment, the set time is n times the time required for the shaft 140 to rotate a full circle, where n ≥ 2. Under normal circumstances, the shaft 140 rotates at a certain angular velocity, and the time from the press signal to the release signal is within the set time range. If the time is abnormal, the shaft 140 rotates another circle. If n rotations fail, an error is reported.

[0118] S232: If yes, then an error is reported. At this point, the error has been verified multiple times and needs to be repaired before the machine can continue to operate. If it continues to operate, it is easy to damage parts and cause a large loss of water in the dishwasher.

[0119] If not, the control shaft 140 continues to rotate to sequentially trigger the press signal and release signal of the position signal member 160 until the time interval is within the theoretical time deviation range. Multiple attempts are made to verify whether the time interval between the press signal and the release signal is within the theoretical time deviation range.

[0120] like Figure 15As shown, in one embodiment, after step S20: calibrating the position of the paddle 120 corresponding to when the position signal member 160 triggers the release signal as the zero position of the paddle 120, the following step is also included: S30: controlling the rotating shaft 140 to rotate from the zero position of the paddle 120 for a preset time to allow the paddle 120 to reach a preset position. The corresponding position of the paddle 120 when the position signal member 160 triggers the release signal is used as the zero position of the rotation of the paddle 120, and based on this, the rotating shaft 140 is controlled to rotate for a preset time, thereby controlling the rotating shaft 140 and the paddle 120 to rotate by a specific angle, so that the paddle 120 can be accurately controlled to rotate to a specific position, thereby achieving accurate control of the position of the paddle 120, thereby avoiding the problem of inaccurate positioning of the zero position of the paddle 120 during the operation of the water diversion valve 100, resulting in the paddle 120 being unable to completely block or fully open a specific water channel due to rotation based on this basis, thereby achieving precise control of the on-off and diversion of the water channel in the dishwasher.

[0121] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0122] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A water diversion valve, characterized in that: The water diverter valve comprises: A valve body is provided with an open water diversion chamber and a water inlet connected to the water diversion chamber, wherein the water diversion chamber gradually extends from the open end of the water diversion chamber to the bottom of the water diversion chamber; and a paddle, disposed on the valve body and covering the opening of the water diversion chamber, the paddle defining a water outlet communicating with the water diversion chamber, the paddle having a guide surface defining the water outlet, the guide surface at least including a wall surface located at the bottom of the water outlet and close to the center of the paddle, the guide surface expanding from the water outlet toward a direction away from the water outlet; The valve body has an inner wall surface defining the water diversion cavity, and at least the wall surface facing the water inlet of the inner wall surface shrinks from the opening of the water diversion cavity toward the center of the bottom of the water diversion cavity; The diameter of the water outlet gradually expands in the direction toward the interior of the water diversion cavity; The paddle is provided with a notch, the notch being located at the bottom of the water outlet and overlapping with the inner wall of the water diversion cavity, and the guide surface covering the bottom surface of the paddle except the notch; The guide surface and the tapered inner wall surface of the water diversion cavity opposite to the guide surface jointly enclose a bell-mouth structure that smoothly tapers toward the water outlet.

2. The water diversion valve according to claim 1, characterized in that: The valve body has an inner wall surface defining the water diversion cavity, and each location of the inner wall surface in the circumferential direction shrinks toward the center of the bottom of the water diversion cavity to form a concave arc surface.

3. The water diversion valve according to claim 2, characterized in that: The arc radius of the inner wall surface at the lowest point opposite to the water inlet is r, the radius of the inner wall surface at the opening is R, and r / R≤0.

6.

4. The water diversion valve according to claim 1, characterized in that: The valve body includes a main body and a water inlet part connected to each other, the water diversion chamber is opened in the main body, the water inlet part is connected to the circumferential surface of the main body, and the water inlet part is opened on the end surface of the water inlet part away from the main body, and the water inlet extends toward the interior of the valve body to form a water inlet channel, and the water inlet channel passes through the water inlet part and penetrates into the main body to connect with the water diversion chamber.

5. The water diversion valve according to claim 4, characterized in that: The water inlet channel includes an upstream section located at the water inlet portion and a downstream section located at the main body portion. The main body portion has an inflow bottom surface constituting the bottom of the downstream section, and the inflow bottom surface is a plane.

6. The water diversion valve according to claim 5, characterized in that: One end of the inflow bottom surface away from the water inlet is flush with the lowest point of the water diversion cavity.

7. The water diversion valve according to claim 6, characterized in that: The inflow bottom surface is an inclined surface inclined upwardly toward the interior of the water diversion cavity.

8. The water diversion valve according to claim 5, characterized in that: The main body portion further comprises an inflow top surface constituting the top of the upstream section, and the inflow top surface is a plane.

9. The water diversion valve according to claim 8, characterized in that: The paddle has a bottom surface arranged toward the water diversion cavity, and the bottom surface is flush with the inflow top surface.

10. The water diversion valve according to claim 5 or 8, characterized in that: The water inlet channel further includes a connecting section located between the upstream section and the downstream section, wherein the connecting section has a plane with a width gradually increasing toward the downstream section.

11. The water diversion valve according to claim 1, characterized in that: The paddle has a bottom surface arranged toward the water diversion cavity, the bottom surface is flush with the top of the water inlet, and the bottom surface is smoothly connected with the top side wall of the water inlet.

12. The water diversion valve according to claim 11, characterized in that: Part of the guide surface is in a curved or inclined shape, and / or the guide surface is in a curved or inclined shape.

13. A dishwasher, characterized in that: It comprises the water diversion valve according to any one of claims 1 to 12.

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