Waterway electromagnetic valve assembly and household appliance

Abstract

The utility model discloses a waterway electromagnetic valve assembly and a household appliance. The waterway electromagnetic valve assembly comprises a valve body; the sealing plate is arranged in the valve body and divides the internal space of the valve body into a first valve cavity and a second valve cavity, and a water inlet runner and a water outlet runner are arranged in the first valve cavity; the sealing plate is provided with a first through hole and a second through hole, the first through hole communicates with the water inlet runner and the second valve cavity, the second through hole communicates with the water outlet runner and the second valve cavity, and a mounting hole is formed in the first cavity wall of the second valve cavity. An electromagnetic member; the ejection piece is arranged at the mounting hole so as to block the mounting hole, and the ejection piece can move outwards relative to the first cavity wall under the action of water pressure in the second valve cavity; the microswitch is arranged on the outer side of the first cavity wall, and a contact of the microswitch is located on the moving path of the ejection piece and is triggered after the ejection piece moves outwards; and the elastic piece acts on the ejection piece, so that the ejection piece always has a trend of moving inwards relative to the first cavity wall to be reset. In this way, when the through holes in the sealing plate are blocked, the condition can be fed back to a user.

Description

Technical Field

[0001] The utility model belongs to the technical field of household appliances, and in particular relates to a water circuit solenoid valve component and a household appliance. Background Art

[0002] Solenoid valves are used in many household appliances, such as washing machines, water heaters, dishwashers, water purifiers and other products. These household appliances use solenoid valves to control the on and off of water circuits.

[0003] The existing solenoid valve, such as the structure disclosed in the utility model patent "Water Circuit Solenoid Valve" (authorization announcement number CN216555376U) with application number 202122688452.1, includes a shell, a coil, a filter screen, a sealing plate, a compression sleeve, a valve core and a spring. The sealing plate is arranged in the built-in sealing cavity and has a first through hole and a second through hole. The first through hole connects the built-in sealing cavity and the second flow channel, and the second through hole connects the first flow channel and the built-in sealing cavity; the compression sleeve has a first cylinder portion and a second cylinder portion integral with the first cylinder portion. The radial length of the first cylinder portion is smaller than the radial length of the second cylinder portion and is located in the axial hollow inner cavity of the coil. The second cylinder portion is sealed in the built-in sealing cavity of the shell and presses the sealing plate.

[0004] Another example is the structure disclosed in the utility model patent "A wastewater ratio solenoid valve structure" (authorization announcement number CN216555373U) with application number 202122075326.9, which includes: a valve body, having a valve cavity inside, the valve cavity having an inlet channel and an outlet channel connected to each other; a sealing member, arranged in the valve cavity, and having a first through hole connected to the inlet channel and a second through hole connected to the outlet channel; an electromagnetic structure, whose output end has a pin that can reciprocate relative to the valve cavity and intermittently extend into the valve cavity, and the pin seals the second through hole when extended into the valve cavity; a guide needle, arranged in the valve cavity and partially penetrated into the first through hole, and an elastic connecting member is provided between at least one end of the guide needle and the inner wall of the valve cavity.

[0005] During the use of existing solenoid valve products, the through holes on the sealing member are easily clogged by impurities in the water, thereby affecting the normal use of the solenoid valve. Utility Model Content

[0006] The first technical problem to be solved by the utility model is to provide a water circuit solenoid valve assembly in view of the current status of the prior art, so as to provide feedback to the user when a through hole on the sealing member is clogged.

[0007] The second technical problem to be solved by the utility model is to provide a household appliance having the water circuit solenoid valve assembly.

[0008] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is: a water circuit solenoid valve assembly, comprising:

[0009] The valve body is hollow inside;

[0010] A sealing plate is arranged in the valve body and divides the internal space of the valve body into a first valve cavity and a second valve cavity, wherein the first valve cavity has an independent water inlet flow channel and a water outlet flow channel; the sealing plate has a first through hole and a second through hole penetrating the thickness of the plate, wherein the first through hole connects the water inlet flow channel and the second valve cavity, and the second through hole connects the water outlet flow channel and the second valve cavity;

[0011] The electromagnetic component comprises an ejector pin capable of reciprocating relative to the sealing plate to open and close the second through hole, and a coil circumferentially wound around the outer periphery of the ejector pin;

[0012] Features:

[0013] The cavity wall of the second valve cavity is provided with a mounting hole penetrating through the wall thickness thereof, and the cavity wall where the mounting hole is located is referred to as the first cavity wall;

[0014] Also included are:

[0015] An ejector, disposed at the mounting hole to block the mounting hole, and the ejector can move outward relative to the first cavity wall under the action of water pressure in the second valve cavity;

[0016] A micro switch is arranged on the outer side of the first cavity wall, and the contact of the micro switch is located on the moving path of the ejector and is triggered after the ejector moves outward;

[0017] The elastic member acts on the ejection member so that the ejection member always has a tendency to move inwardly relative to the first cavity wall and reset.

[0018] In this way, when the ejector pin in the electromagnetic component closes the second through hole, if the first through hole is not blocked and is in a smooth state, at this time, the water in the water inlet channel enters the second valve cavity and makes the pressure in the second valve cavity higher, and the pressure can act on the ejector to make the ejector move forward, and the micro switch is triggered, indicating that the electromagnetic valve is normal; on the contrary, if the first through hole is blocked, the pressure in the second valve cavity is relatively small, the ejector is reset under the action of the elastic component, and the micro switch is not triggered, indicating that the electromagnetic valve has failed, so that the utility model can provide feedback to the user when the through hole on the sealing plate is blocked.

[0019] Preferably, the first cavity wall where the mounting hole of the second valve cavity is located is arranged opposite to the sealing plate.

[0020] Preferably, the first through hole and the second through hole are located in the central area of ​​the sealing plate, and the mounting hole is arranged corresponding to the peripheral area of ​​the sealing plate. In this way, the design of the ejector will not affect the operation of the solenoid valve.

[0021] Furthermore, the edge of the mounting hole extends outward relative to the first cavity wall to form a convex column that is hollow inside and axially penetrates, and the ejector is a rod-shaped body that matches the internal shape of the convex column, and at least a portion of the rod-shaped body is axially inserted into the convex column. In this way, the design of the convex column is conducive to the movement of the ejector.

[0022] In order to enable the ejector to block the mounting hole, the ejector further includes an ejector rod and a sealing ring, at least a portion of the ejector rod is inserted into the boss along the axial direction, and an annular groove is circumferentially provided on the side wall of the ejector rod, the inner ring wall of the sealing ring is circumferentially provided in the annular groove, and the outer ring wall of the sealing ring is opposite to and fits with the inner circumferential wall of the boss. In this way, the sealing ring can move with the ejector rod, and seals and cooperates with the inner circumferential wall of the boss when moving.

[0023] Preferably, the cross section of the sealing ring is circular, so that the sealing ring can move along with the ejector rod.

[0024] To improve the sealing effect, preferably, there are at least two annular grooves, which are axially spaced and distributed on the side wall of the ejector rod, and the above-mentioned sealing ring is provided in each annular groove. During the movement of the ejector, the sealing ring is always located in the boss.

[0025] Preferably, a circle of steps is provided in the boss near the mounting hole for the ejector to be supported thereon;

[0026] Preferably, a portion of the ejector is located outside the boss and is provided with a flange along the circumferential direction, and the outer diameter of the flange is greater than the inner diameter of the boss.

[0027] Preferably, the micro switch is arranged in the axial direction of the boss, and the elastic member is a spring arranged between the micro switch and the ejector member.

[0028] The technical solution adopted by the utility model to solve the second technical problem is: a household appliance, characterized by having the water circuit solenoid valve assembly as described above.

[0029] The household appliance is preferably a water purifier.

[0030] Compared with the prior art, the utility model has the following advantages: by providing a mounting hole on the first cavity wall of the second valve cavity, and providing an ejector, a micro switch, and an elastic member, when the ejector pin in the electromagnetic member closes the second through hole, if the first through hole is not blocked and is in a smooth state, at this time, the water in the water inlet channel enters the second valve cavity and makes the pressure in the second valve cavity relatively large, and the pressure can act on the ejector to make the ejector move outward, and the micro switch is triggered, indicating that the electromagnetic valve is normal; on the contrary, if the first through hole is blocked, the pressure in the second valve cavity is relatively small, the ejector is reset under the action of the elastic member, and the micro switch is not triggered, indicating that the electromagnetic valve has failed, so that the utility model can provide feedback to the user when the through hole on the sealing plate is blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a structural schematic diagram of a water circuit solenoid valve assembly in an embodiment of the utility model;

[0032] Figure 2 It is a cross-sectional view of a water circuit solenoid valve assembly in an embodiment of the utility model;

[0033] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0034] Figure 4 This is a schematic diagram of the structure of the ejector rod in the embodiment of the utility model;

[0035] Figure 5 It is a cross-sectional view of the first cavity wall of the second valve cavity in the embodiment of the utility model. DETAILED DESCRIPTION

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0037] like Figures 1 to 5 As shown, a preferred embodiment of a water circuit solenoid valve assembly and a household appliance of the utility model is shown, and the water circuit solenoid valve assembly includes a valve body 1, a sealing plate 2, an electromagnetic component 3, a ejection component 4, a micro switch 5 and an elastic component 6.

[0038] The valve body 1 is hollow inside.

[0039] The sealing plate 2 is placed horizontally in the valve body 1, and divides the internal space of the valve body 1 into a first valve cavity 11 and a second valve cavity 12. The second valve cavity 12 is located above the sealing plate 2, and the first valve cavity 11 is located below the sealing plate 2, and has independent water inlet channel 11a and water outlet channel 11b distributed on the left and right; the sealing plate 2 has a first through hole 21 and a second through hole 22 that penetrate the plate thickness, the first through hole 21 connects the water inlet channel 11a and the second valve cavity 12, and the second through hole 22 connects the water outlet channel 11b and the second valve cavity 12. In this embodiment, the first through hole 21 and the second through hole 22 are located in the central area of ​​the sealing plate 2. The cavity wall at the top of the second valve cavity 12 opposite to the sealing plate 2 is provided with a mounting hole 120 that penetrates its own wall thickness, and the cavity wall where the mounting hole 120 is located is recorded as the first cavity wall 121, and the mounting hole 120 is arranged corresponding to the peripheral area of ​​the sealing plate 2. In this embodiment, the edge of the mounting hole 120 extends upward relative to the first cavity wall 121 to form a convex column 122 which is hollow inside and axially penetrates. A circle of steps 123 is provided in the convex column 122 near the mounting hole 120 .

[0040] The electromagnetic component 3 has a pin 31 vertically arranged above the sealing plate 2 and capable of moving up and down relative to the sealing plate 2 to open and close the second through hole 22, a coil 32 circumferentially wound around the outer periphery of the pin 31, and the coil 32 drives the pin 31 to move upward to open the second through hole 22 when it is energized, and the electromagnetic component 3 also includes a spring as an elastic body 33, and the spring acts on the pin 31 so that the pin 31 always has a tendency to move downward to close the second through hole 22. Therefore, when the coil 32 is energized, the pin 31 opens the second through hole 22, and when the coil is de-energized, the pin 31 closes the second through hole 22.

[0041] The ejector 4 comprises an ejector rod 41 and a sealing ring 42. The lower part of the ejector rod 41 is inserted into the boss 122 through the upper end opening of the boss 122 and supported on the step 123. An annular groove 410 is circumferentially provided on the side wall of the ejector rod 41. There are two annular grooves 410, one above and one below. There are also two sealing rings 42. The cross section of each sealing ring 42 is circular. The inner ring wall of each sealing ring 42 is circumferentially arranged in the corresponding annular groove 410. The outer ring wall of each sealing ring 42 is opposite to and fits with the inner circumferential wall of the corresponding boss 122, so that the sealing ring 42 is sealed and matched with the inner circumferential wall of the boss 122 to prevent water in the second valve cavity 12 from leaking from the boss 122. When the pressure in the second valve cavity 12 is relatively high, the air pressure can push the ejector rod 41 to move upward. During the movement of the ejector rod 41, the sealing ring 42 moves accordingly and is always located in the boss 122. The upper portion of the ejector rod 41 is located outside the boss 122 and is provided with a flange 43 along the circumferential direction. The outer diameter of the flange 43 is greater than the inner diameter of the boss 122, so that the flange 43 can be supported on the boss 122. The upper end of the ejector rod 41 is located above the flange 43.

[0042] The micro switch 5 is fixed relative to the valve body 1 and is located above the ejector rod 41. The contact of the micro switch 5 is on the moving path of the upper end of the ejector rod 41 and is triggered after the ejector rod 41 moves upward. The elastic member 6 is a spring arranged between the micro switch 5 and the ejector rod 41, so that the ejector rod 41 always has a tendency to move downward and be supported on the step 123 to reset. At the same time, the part of the valve body 1 used to fix the micro switch has a retaining ring 13 used to constrain the flange 43 to prevent the flange 43 from moving further upward. The contact of the micro switch 5 is located in the retaining ring. After the upper end of the ejector rod 41 moves upward, it can extend into the retaining ring 13 to trigger the contact of the micro switch 5. The cooperation between the flange 43 and the retaining ring 13 can limit the upward movement distance of the ejector rod 41, thereby protecting the micro switch 5 from damage by the ejector rod 41.

[0043] The household appliance of this embodiment is a water purifier, including a water purifier body and the above-mentioned water circuit solenoid valve assembly. The installation position and connection structure of the water circuit solenoid valve assembly in the water purifier body are designed with reference to the prior art and are not elaborated here.

[0044] When the ejector pin 31 in the electromagnetic component 3 closes the second through hole 22, if the first through hole 21 is not blocked and is in a smooth state, at this time, the water in the water inlet channel 11a enters the second valve chamber 12 and makes the pressure in the second valve chamber 12 relatively large, and the pressure can act on the ejector rod 41 to make the ejector rod 41 move upward, and the micro switch 5 is triggered, indicating that the electromagnetic valve is normal; on the contrary, if the first through hole 21 is blocked, the pressure in the second valve chamber 12 is relatively small, and the ejector rod 41 moves downward and resets under the action of the elastic component 6, and the micro switch 5 is not triggered, indicating that the electromagnetic valve has failed, so that the utility model can provide feedback to the user when the through hole on the sealing plate 2 is blocked.

[0045] In the specification and claims of the present invention, terms indicating directions, such as "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0046] The term "vertical" is also used in the specification and claims of the present utility model, which means basically along the up and down direction, and is not limited to the vertical direction only, and can also be slightly inclined relative to the vertical direction.

Claims

1. A water circuit solenoid valve assembly, comprising: A valve body (1) having a hollow interior; A sealing plate (2) is arranged in the valve body (1) and divides the internal space of the valve body (1) into a first valve chamber (11) and a second valve chamber (12), wherein the first valve chamber (11) has an independent water inlet channel (11a) and a water outlet channel (11b); the sealing plate (2) has a first through hole (21) and a second through hole (22) penetrating the thickness of the plate, wherein the first through hole (21) connects the water inlet channel (11a) and the second valve chamber (12), and the second through hole (22) connects the water outlet channel (11b) and the second valve chamber (12); The electromagnetic component (3) comprises a pin (31) capable of reciprocating relative to the sealing plate (2) to open and close the second through hole (22), and a coil (32) circumferentially arranged around the outer periphery of the pin (31); Features: The cavity wall of the second valve cavity (12) is provided with a mounting hole (120) penetrating the thickness of the cavity wall, and the cavity wall where the mounting hole (120) is located is referred to as the first cavity wall (121); Also included are: An ejector (4) is arranged at the mounting hole (120) to block the mounting hole (120), and the ejector (4) can move outward relative to the first cavity wall (121) under the action of water pressure in the second valve cavity (12); A micro switch (5) is arranged on the outer side of the first cavity wall (121), and the contact of the micro switch (5) is located on the moving path of the ejector (4) and is triggered after the ejector (4) moves outward; The elastic member (6) acts on the ejection member (4) so ​​that the ejection member (4) always has a tendency to move inward relative to the first cavity wall (121) and to return to its original position.

2. The water circuit solenoid valve assembly according to claim 1, characterized in that: The first cavity wall (121) where the mounting hole (120) of the second valve cavity (12) is located is arranged opposite to the sealing plate (2).

3. The water circuit solenoid valve assembly according to claim 2, characterized in that: The first through hole (21) and the second through hole (22) are located in the central area of ​​the sealing plate (2), and the mounting hole (120) is arranged corresponding to the peripheral area of ​​the sealing plate (2).

4. The water circuit solenoid valve assembly according to claim 1, characterized in that: The edge of the mounting hole (120) extends outward relative to the first cavity wall (121) to form a convex column (122) that is hollow inside and axially penetrates, and the ejector (4) is a rod-shaped body that matches the internal shape of the convex column (122), and at least a part of the rod-shaped body is axially inserted into the convex column (122).

5. The water circuit solenoid valve assembly according to claim 4, characterized in that: The ejector member (4) comprises an ejector rod (41) and a sealing ring (42); at least a portion of the ejector rod (41) is axially inserted into the boss (122); an annular groove (410) is circumferentially provided on the side wall of the ejector rod (41); an inner ring wall of the sealing ring (42) is circumferentially provided in the annular groove (410); and an outer ring wall of the sealing ring (42) is opposite to and in contact with the inner circumferential wall of the boss (122).

6. The water circuit solenoid valve assembly according to claim 5, characterized in that: The cross section of the sealing ring (42) is circular.

7. The water circuit solenoid valve assembly according to claim 5, characterized in that: There are at least two annular grooves (410) which are spaced apart along the axial direction on the side wall of the ejector rod (41), and each annular groove (410) is provided with the above-mentioned sealing ring (42). During the movement of the ejector (4), the sealing ring (42) is always located in the protruding column (122).

8. The water circuit solenoid valve assembly according to claim 4, characterized in that: A circle of steps (123) is provided in the boss (122) near the mounting hole (120) for the ejector (4) to be supported thereon; Part of the ejector (4) is located outside the convex column (122) and is provided with a flange (43) along the circumferential direction. The outer diameter of the flange (43) is greater than the inner diameter of the convex column (122).

9. The water circuit solenoid valve assembly according to claim 4, characterized in that: The micro switch (5) is arranged in the axial direction of the protruding column (122), and the elastic member (6) is a spring arranged between the micro switch (5) and the ejector member (4).

10. A household appliance, characterized in that A water circuit solenoid valve assembly as claimed in any one of claims 1 to 8.

11. The household appliance according to claim 10, characterized in that: The household appliance is a water purifier.

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