Dish-washing machine shunt valve and dish-washing machine

Abstract

The dish-washing machine shunt valve comprises a cover body, a shell, a rotary driver, a valve plate, a spring, a rotating piece and a rotary driver, the cover body and the shell are mutually covered to form a valve cavity, the rotating piece is rotationally connected to the shell and driven by the rotary driver to rotate, and the rotating piece comprises a linkage end. The linkage end is located in the valve cavity and faces the cover body, the valve plate is installed at the linkage end, and the valve plate is axially connected to the linkage end in a sliding mode; the cover body is provided with a first water outlet and a second water outlet, the valve plate is provided with a plurality of control positions, and the plurality of control positions comprise a closed position; the valve plate has three states in the axial rotation process, in the first state, the first water outlet can be blocked at the closed position; in the second state, the sealing position can block the second water outlet; and in the third state, the closed position is staggered with the first water outlet and the second water outlet. The dish-washing machine is simple in structure, capable of achieving dish-washing machine water path control, good in sealing performance of the shunt valve and small in water pressure loss.

Description

Technical Field

[0001] This utility model relates to cleaning equipment, and more specifically, to a dishwasher water distribution valve, and to a dishwasher having the water distribution valve. Background Technology

[0002] Dishwashers typically have multiple spray systems inside, generally consisting of three layers: top spray, middle spray, and bottom spray. When the dishwasher is operating, all three spray systems usually work simultaneously, washing and spraying the dishes in all areas of the dishwasher.

[0003] To achieve energy saving or centralized spraying, current dishwashers are typically equipped with a water distributor. This distributor controls the spray water path of the dishwasher, which is generally divided into two paths. The distributor can control both paths to work simultaneously or one path to work at a time, thus adapting to different spraying scenarios. For example, Chinese utility model patent CN106321898A discloses a water distribution valve assembly and a dishwasher, which can achieve spray water path switching control. In this solution, each water outlet is located around the valve seat, and the water distribution baffle is located inside the valve seat. The water distribution baffle controls the water path by blocking the water outlets. However, the pressure sealing effect between the water distribution baffle and the water outlet is not good, which can easily lead to water leakage.

[0004] Current technical solutions use water distributors to control the water path switching of the sprayer. This utility model also discloses a new water distributor valve solution for dishwashers. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a dishwasher water distribution valve and dishwasher with a simple structure that can realize the water circuit control of the dishwasher.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A dishwasher water distribution valve includes a cover, a housing, a rotary actuator, a valve plate, a spring, a rotating component, and the rotary actuator. The cover and housing are closed to form a valve cavity. The rotating component is rotatably connected to the housing and driven to rotate by the rotary actuator. The rotating component includes a linkage end located within the valve cavity and facing the cover. The valve plate is mounted on the linkage end and is axially slidably connected to the linkage end, and can rotate synchronously with the linkage end. The spring elastically acts on the valve plate towards the cover. The cover has a first water outlet and a second water outlet. The valve plate has several control positions, including a closed position. The valve plate has three states during axial rotation: a first state where the closed position blocks the first water outlet; a second state where the closed position blocks the second water outlet; and a third state where the closed position is misaligned with both the first and second water outlets.

[0008] The present invention is further configured such that several control positions are evenly distributed around the rotation axis of the valve plate.

[0009] The present invention is further configured such that there are four control positions, and the control positions include a first through hole position, a second through hole position and a third through hole position.

[0010] The present invention is further configured such that the first water outlet and the second water outlet are provided with a flange on the side facing the valve plate, and the end face of the flange abuts against the valve plate.

[0011] The present invention is further configured such that a rotating support is fixedly connected inside the housing, the rotating support has a shaft hole, the rotating component is rotatably connected to the shaft hole and sealed by a sealing ring; the spring elastically presses against the rotating support and the valve plate.

[0012] The present invention is further configured such that the valve plate includes a sliding sleeve portion, the sliding sleeve portion is sleeved on the linkage end and is axially slidably connected to the linkage end; the cover body is integrally formed with the inner tank base of the dishwasher; the housing has an inlet port that communicates with the valve chamber.

[0013] The present invention is further configured to include a micro switch, which is installed in the housing and has contacts; an annular linkage part is fixedly connected to the outer periphery of the rotating part, the linkage part including three linkage protrusions, the linkage protrusions being able to trigger the contacts of the micro switch, and the positions of the three linkage protrusions respectively corresponding to the three states of the valve plate.

[0014] The present invention is further configured such that the linkage protrusions extend in the circumferential direction, and the curvatures corresponding to the three linkage protrusions are different.

[0015] The present invention is further configured such that a guide portion is formed on one side of the linkage protrusion, and the guide portions of the three linkage protrusions are all located on the same side in the rotation direction.

[0016] This utility model also provides a dishwasher, including the dishwasher water distribution valve as described above. The dishwasher body is provided with two spray water paths, which are respectively opposite to the first water outlet and the second water outlet of the water distribution valve. By controlling the water distribution valve, the two spray water paths can spray water simultaneously, or one spray water path can be selected to spray water, thereby enabling the selection of three different spray washing methods, so that the dishwasher can select different washing modes to adapt to different washing scenarios.

[0017] In summary, this utility model has the following beneficial effects:

[0018] By cooperating with the valve body and the two outlets, the switching control of the two outlets can be realized, allowing water to flow from both outlets simultaneously or from only one outlet, thus enabling the switching of three water flow states.

[0019] By opening an outlet at the end face of the valve body of the water divider valve, the valve plate and the rotating part can slide and adjust axially. Through the elastic force of the spring, the valve plate inside the water divider valve can abut against the end face of the outlet. When closed, it can elastically maintain the pressure of the two against each other to seal, thereby making it less likely for water to leak at the outlet and reducing pressure loss.

[0020] By setting a micro switch and a linkage protrusion in the water distribution valve, the linkage protrusion can cooperate with the contacts of the micro switch to detect the rotation position of the water distribution valve, thereby facilitating the control of the water distribution valve's state and making it convenient to switch between different states of the water distribution valve. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a dishwasher water distribution valve and spray arm water circuit in this embodiment;

[0022] Figure 2 This is a schematic diagram of the structure of a dishwasher water distribution valve in this embodiment;

[0023] Figure 3 This is a cross-sectional view of the water distribution valve and spray arm water passage of a dishwasher in this embodiment;

[0024] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 This is a partial exploded schematic diagram of a dishwasher water distribution valve in one embodiment;

[0026] Figure 6 This is a schematic diagram of the micro switch and linkage mechanism in the embodiment.

[0027] Reference numerals: Cover 10; First outlet 11; Second outlet 12; Edge 13; Housing 20; Inlet 21; Valve chamber 22; Rotary support 23; Shaft hole 24; Rotary actuator 30; Drive shaft 31; Valve plate 40; Control position 401; First through hole position 41; Second through hole position 42; Third through hole position 43; Closed position 44; Sliding sleeve 45; Spring 50; Rotating component 60; Sealing ring 61; Linkage end 62; Linkage part 63; Linkage protrusion 631; Guide part 632; Micro switch 70; Contact 71; Inner tank base 80; Spray arm water passage 90. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] This embodiment discloses a dishwasher water distribution valve, referring to... Figure 1 , Figure 3 As shown, this is used in a dishwasher. The water path 90 of the dishwasher's spray arm is divided into two paths, which are controlled by a water distribution valve. The water distribution valve has three states, which can select that both paths of the dishwasher's spray arm water path 90 work together, or select that one path works.

[0030] Reference Figure 2 , Figure 4 , Figure 5 As shown, the dishwasher water distribution valve in this embodiment includes a cover 10, a housing 20, a rotary actuator 30, a valve plate 40, a spring 50, a rotating component 60, and the rotary actuator 30.

[0031] The cover 10 is integrally formed with the inner tank base 80 of the dishwasher, and the valve body can be integrated into the inner tank base 80; the cover 10 and the shell 20 are compatible with each other and can cover each other to form the valve cavity 22, and the shell 20 is fixedly installed on the lower side of the cover 10.

[0032] The outer periphery of the housing 20 is provided with a water inlet 21 that connects to the valve chamber 22. The cover 10 is provided with a first water outlet 11 and a second water outlet 12, which are respectively opposite to the two water passages of the two spray arms and can supply water to the spray arms.

[0033] Spring 50 and valve plate 40 are installed in valve cavity 22. Through the elastic action of spring 50, valve plate 40 can be pressed against the first outlet 11 and the second outlet 12, so that valve plate 40 can block the corresponding outlet.

[0034] A rotating support 23 is fixedly connected inside the housing 20, and the rotating support 23 has a shaft hole 24. A rotating component 60 is rotatably connected to the shaft hole 24, and the end of the rotating component 60 forms a linkage end 62, which extends into the valve cavity 22 and faces the cover 10. Most of the rotating component 60 is located outside the valve cavity 22. The connection between the shaft hole 24 and the rotating component 60 is sealed by a sealing ring 61, which allows for normal rotation while maintaining a seal.

[0035] The rotary actuator 30 is fixedly mounted to the housing 20. The rotary actuator 30 has a drive shaft 31 that can rotate actively, and the drive shaft 31 is connected to the rotating component 60. The rotary actuator 30 can drive the rotating component 60 to rotate, thereby driving the valve plate 40 to rotate and switching the state of the valve plate 40.

[0036] The valve plate 40 is mounted on the linkage end 62 of the rotating component 60. The valve plate 40 is axially slidably connected to the linkage end 62 and can rotate synchronously with the linkage end 62. Specifically, a sliding sleeve 45 is fixedly connected at the middle position of the valve plate 40. The sliding sleeve 45 is sleeved outside the linkage end 62. The inner holes of both the linkage end 62 and the sliding sleeve 45 are irregularly shaped. The sliding sleeve 45 can slide axially relative to the linkage end 62 and can maintain axial synchronous rotation. On the one hand, the rotating component 60 can drive the valve plate 40 to rotate during rotation. On the other hand, the valve plate 40 can slide axially when subjected to the elastic force of the spring 50, so that the valve plate 40 can always abut against the first outlet 11 and the second outlet 12, thereby ensuring the sealing of the corresponding outlets when sealing.

[0037] Specifically, the spring 50 is sleeved on the outer periphery of the linkage end 62 of the rotating member 60, and its two ends elastically abut against the valve plate 40 of the rotating support part 23, which can stably apply an elastic force to the valve plate 40. A flange 13 is provided on the side of the first outlet 11 and the second outlet 12 facing the valve plate 40, and the end faces of the flanges 13 of the two outlets are flush. The end faces of the flanges 13 abut against the valve plate 40, thereby ensuring a tight seal during plugging.

[0038] Reference Figure 5As shown, the valve plate 40 has several control positions 401. During the rotation of the valve plate 40, each control position 401 changes relative to the first outlet 11 and the second outlet 12. Among the several control positions 401 is a closed position 44. When the closed position 44 is opposite to the first outlet 11 and the second outlet 12, the corresponding outlet will be sealed. Moreover, the closed position 44 can only seal one outlet at a time.

[0039] The valve plate 40 has three states during axial rotation: in the first state, the closed position 44 can block the first outlet 11 and the second outlet 12 is open; in the second state, the closed position 44 can block the second outlet 12 and the first outlet 11 is open; in the third state, the closed position 44 is misaligned with both the first outlet 11 and the second outlet 12, and both the first outlet 11 and the second outlet 12 are open at the same time.

[0040] Several control positions 401 are evenly distributed around the rotation axis of the valve plate 40, and the first outlet 11 and the second outlet 12 are respectively opposite to the two control positions 401. During the rotation adjustment process, the valve plate 40 can switch between three states for adjustment.

[0041] In this embodiment, there are four control positions 401, namely the aforementioned closed position 44, the first through-hole position 41, the second through-hole position 42, and the third through-hole position 43, for a total of four positions, three of which have through holes. When the three through-hole positions are opposite to the water outlet, the corresponding water outlet can be opened.

[0042] Furthermore, the first outlet 11 and the second outlet 12 are symmetrical about the axis of the valve plate 40. When the valve plate 40 is in the first state, the closed position 44 is opposite to the first outlet 11, and the second through hole position 42 is opposite to the second outlet 12. When the valve plate 40 is in the second state, the closed position 44 is opposite to the second outlet 12, and the second through hole position 42 is opposite to the first outlet 11. When the valve plate 40 is in the second state, the first through hole position 41 is opposite to the first outlet 11, and the third through hole position 43 is opposite to the second outlet 12, or the third through hole position 43 is opposite to the first outlet 11, and the first through hole position 41 is opposite to the second outlet 12.

[0043] Alternatively, the control position 401 of the valve plate 40 can be set to three or five or more, which can also realize the switching of the three states of the water distribution valve; for example, the control position 401 of the valve plate 40 is three, one of which is the closed position 44 and the other two are through positions. By rotating to switch the position of the closed position 44, the three states of the water distribution valve can also be switched.

[0044] Furthermore, in the dishwasher water distribution valve of this embodiment, a micro switch 70 is also provided. The micro switch 70 cooperates with the rotating member 60. When rotated to a specific position, the rotating member 60 will sense the contact 71 of the micro switch 70, and the control valve plate 40 can be rotated to adjust to the corresponding three states.

[0045] A ring-shaped linkage part 63 is fixedly connected to the outer periphery of the rotating part 60. The linkage part 63 includes three linkage protrusions 631, which protrude outward in the peripheral direction. A micro switch 70 is installed on the outer periphery of the linkage part 63, and the contact 71 of the micro switch 70 corresponds to the position of the linkage protrusions 631. The positions of the three linkage protrusions 631 correspond to the three states of the valve plate 40, respectively.

[0046] Furthermore, a guide portion 632 is formed on one side of the linkage protrusion 631, and the guide portions 632 of the three linkage protrusions 631 are all located on the same side in the direction of rotation. The guide portion 632 is in an inclined transition state. When the linkage protrusion 631 contacts the contact 71 of the micro switch 70, the guide portion 632 contacts first. As the rotating member 60 continues to rotate, the linkage protrusion 631 can press the contact 71 of the micro switch 70, triggering the signal of the micro switch 70. The rotating member 60 continues to rotate until the linkage protrusion 631 disengages from the contact 71 of the micro switch 70. At this time, it means that the valve plate 40 has rotated to one of the states. The three linkage protrusions 631 can correspond to three states.

[0047] The linkage protrusions 631 protrude outwards and extend circumferentially, each with a corresponding curvature. When the linkage protrusions 631 pass the contact 71 of the microswitch 70, the contact 71 is pressed down, and each protrusion corresponds to a different curvature. Generally, the three linkage protrusions 631 are different. When the three linkage protrusions 631 exert pressure on the contact 71 of the microswitch 70, there will be a time difference. The triggering time can be used to determine the position status of the water distribution valve, and it is also convenient to reset the position of the water distribution valve and control it accurately.

[0048] This embodiment also discloses a dishwasher, including a dishwasher body and a dishwasher water distribution valve as described above. The dishwasher body is provided with two spray water paths, which are respectively opposite to the first water outlet 11 and the second water outlet 12 of the water distribution valve. By controlling the water distribution valve, the two spray water paths can spray water simultaneously, or one spray water path can be selected to spray water, thereby enabling the selection of three different spray washing methods, so that the dishwasher can select different washing modes to adapt to different washing scenarios.

[0049] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A dishwasher water distribution valve, characterized in that, The device includes a cover (10), a housing (20), a rotary actuator (30), a valve plate (40), a spring (50), a rotating component (60), and a rotary actuator (30). The cover (10) and the housing (20) are fitted together to form a valve cavity (22). The rotating component (60) is rotatably connected to the housing (20) and driven to rotate by the rotary actuator (30). The rotating component (60) includes a linkage end (62), which is located inside the valve cavity (22) and faces the cover (10). The valve plate (40) is mounted on the linkage end (62) and is axially slidably connected to the linkage end (62), and can rotate synchronously with the linkage end (62). The spring (50) acts elastically on the valve plate (40) in the direction of the cover (10). The cover (10) has a first outlet (11) and a second outlet (12). The valve plate (40) has several control positions (401), including a closed position (44). The valve plate (40) has three states during axial rotation: in the first state, the closed position (44) can block the first outlet (11); in the second state, the closed position (44) can block the second outlet (12); in the third state, the closed position (44) is misaligned with both the first outlet (11) and the second outlet (12).

2. The dishwasher water distribution valve according to claim 1, characterized in that, Several control positions (401) are evenly distributed around the rotation axis of the valve plate (40).

3. The dishwasher water distribution valve according to claim 2, characterized in that, The control position (401) is provided in four parts, and the control position (401) further includes a first through hole position (41), a second through hole position (42) and a third through hole position (43).

4. The dishwasher water distribution valve according to claim 1, characterized in that, The first outlet (11) and the second outlet (12) are provided with a flange (13) on the side facing the valve plate (40), and the end face of the flange (13) abuts against the valve plate (40).

5. The dishwasher water distribution valve according to claim 1, characterized in that, A rotating support (23) is fixedly connected inside the housing (20). The rotating support (23) has a shaft hole (24). The rotating part (60) is rotatably connected to the shaft hole (24) and sealed by a sealing ring (61). The spring (50) elastically presses against the rotating support (23) and the valve plate (40).

6. The dishwasher water distribution valve according to claim 1, characterized in that, The valve plate (40) includes a sliding sleeve (45), which is sleeved on the linkage end (62) and axially slidably connected to the linkage end (62); the cover (10) is integrally formed with the inner tank base (80) of the dishwasher; the housing (20) has an inlet (21) that connects to the valve chamber (22).

7. The dishwasher water distribution valve according to claim 1, characterized in that, It also includes a micro switch (70), which is mounted on the housing (20) and has a contact (71); the outer periphery of the rotating part (60) is fixedly connected to an annular linkage part (63), which includes three linkage protrusions (631), which can trigger the contact (71) of the micro switch (70), and the positions of the three linkage protrusions (631) correspond to the three states of the valve plate (40).

8. The dishwasher water distribution valve according to claim 7, characterized in that, The linkage protrusion (631) extends in the circumferential direction, and the curvatures corresponding to the three linkage protrusions (631) are different.

9. The dishwasher water distribution valve according to claim 7, characterized in that, A guide portion (632) is formed on one side of the linkage protrusion (631), and the guide portions (632) of the three linkage protrusions (631) are all located on the same side in the rotation direction.

10. A dishwasher, characterized in that, Includes the dishwasher water distribution valve as described in any one of claims 1-9.

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