Reversible Solenoid Valve

Abstract

The reversible solenoid valve (100) includes a valve seat (10) having a valve port (11), a slider (20) slidably connected to the valve seat (10), and a drive member (30), wherein the drive member (30) can drive the slider (20) to move it in close contact with the valve seat (10) so as to selectively seal the valve port (11) with a sealing surface (22) of the slider (20). The sealing surface 22 of the slider 20 has a sealing point 21, which is located at a limit position of the edge of the valve orifice 11 of the valve seat 10 so that the sealing surface 22 of the slider 20 can seal the valve orifice 11 when the slider 20 straddles the valve orifice 11 together with the sealing point 21, and the slider 20 is configured such that the position of the sealing point 21 of the slider 20 is higher than the plane where the edge of the valve orifice 11 is located under the action of differential pressure. This reversible solenoid valve prevents interference between the position of the sealing point 21 of the slider 20 and the edge 12 of the valve orifice of the valve seat 10, and further ensures effective sealing of the valve orifice 11 of the valve seat 10 when the slider 20 closes the valve.

Description

[Technical Field]

[0001] Related Applications This application claims priority to a Chinese patent application filed on May 20, 2021, bearing application number 202110553722.X and entitled "Reversible Solenoid Valve," the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of two-way solenoid valves, and in particular to reversible solenoid valves. [Background technology]

[0003] Currently, in a related art reversible solenoid valve, the assembly configuration diagram of the valve seat and slider is as shown in Figure 1. The valve port 2 of the valve seat 1 is circular, and the slider 3 is used to seal the sealing surface of the valve port 2 and has a circular structure. When the slider 3 moves over the valve seat 1 to close the valve, it intersects with the edge of the opening of the valve port 2 on the valve seat 1, forming two support points. A pressure difference acts on the slider, generating an acting force F. This acting force F causes the slider 3 to rotate and tilt along the connecting line formed by the two support points. The configuration diagram of the tilt that occurs after rotation is as shown in Figure 2. When the force F acts on the slider 3, in the process of closing the valve port 2 in the valve closing direction S, the slider 3 fits into the valve port 2 along the leading edge of the movement direction, the value of the fitting depth of the slider 3 is represented by σ, the slider 3 hits the edge of the valve port 2 in an inclined state, and then is forced to slide out of the valve port 2 due to the action of an external force, sealing the valve port 2. As a result, a certain amount of interference occurs between the slider 3 and the edge of the valve port 2 on the valve seat 1 during the valve closing process, so when this reversible solenoid valve closes the valve, there is a certain amount of collision between the sealing surface of the slider 3 and the edge of the valve port 2 on the valve seat 1, and if this continues, the sealing surface of the slider 3 will wear out, making it impossible to effectively seal the valve port 2 on the valve seat 1, and reducing the product reliability of this reversible solenoid valve. Summary of the Invention

[0004] According to various embodiments of the present application, a reversible solenoid valve is provided.

[0005] The reversible solenoid valve includes a valve seat having a valve port, a slider slidably connected to the valve seat, and a driving member. The driving member can drive the slider to move in close contact with the valve seat so that the sealing surface of the slider selectively seals the valve port. The sealing surface of the slider has a sealing point. The sealing point is located at a limit position of the edge of the valve port on the valve seat so that the sealing surface of the slider can seal the valve port when the slider straddles the valve port together with the sealing point. Under the action of a pressure difference, the position where the sealing point of the slider is located is above the plane where the edge of the valve port is located.

[0006] In one embodiment, the sealing point is provided on the frame line on the side of the sealing surface facing the edge of the valve orifice.

[0007] In one embodiment, the frame line having the sealing point of the sealing surface is set as a straight line segment perpendicular to the direction in which the slider moves on the valve seat.

[0008] In one embodiment, the sealing surface is rectangular in shape.

[0009] In one embodiment, an arcuate groove is drilled at the end of the sealing surface facing the edge of the valve opening, and the sealing point is located at the bottom of the arcuate groove.

[0010] In one embodiment, the arcuate groove includes two connected arcuate grooves, the two arcuate grooves are arranged symmetrically with respect to the centerline of the slider, and the connection point of the two arcuate grooves is set as the sealing point.

[0011] In one embodiment, the number of the arcuate groove is one, the arcuate groove is symmetrical with respect to the center line of the slider, and the center point of the groove bottom of the arcuate groove is set as the sealing point.

[0012] In one embodiment, the sealing point is located within the sealing surface.

[0013] In one embodiment, the sealing surface includes a circular main surface and a strip-shaped convex surface provided on the circular main surface, and the sealing point is provided at the center position of a connecting line where the circular main surface and the strip-shaped convex surface are connected.

[0014] In one embodiment, the sum of twice the sealing width when the sealing surface seals the valve orifice and the diameter of the valve orifice is smaller than the outer diameter of the sealing surface.

[0015] The details of one or more embodiments of the application are set forth in the drawings and description below. Other features, objects, and advantages of the application will become apparent from the description, drawings, and claims. [Brief explanation of the drawings]

[0016] To better describe and explain the embodiments and / or examples of these applications disclosed herein, reference may be made to one or more drawings. Any additional details or examples used to explain the drawings should not be considered as limiting the scope of any of the disclosed applications, the embodiments and / or examples described herein, and the best mode of these applications as understood herein.

[0017] [Figure 1] FIG. 1 is a schematic diagram illustrating an assembly configuration of a slider and a valve seat of a reversible solenoid valve according to a related art. [Figure 2] FIG. 10 is a schematic diagram illustrating a state in which a slider of a reversible solenoid valve in the related art is tilted. [Figure 3] FIG. 1 is a schematic diagram of a reversible solenoid valve according to one or more embodiments. [Figure 4] 1 is a schematic diagram of an assembled configuration of a valve seat and slider of a reversible solenoid valve according to one or more embodiments. [Figure 5] 1 is a schematic assembly diagram of another view of the valve seat and slider of a reversible solenoid valve according to one or more embodiments. [Figure 6] 10 is a schematic diagram of an assembled configuration of a slider and a valve seat in a second case of a reversible solenoid valve according to one or more embodiments. FIG. [Figure 7]1 is a schematic diagram of an assembled configuration of a valve seat and slider of a reversible solenoid valve according to one or more embodiments. [Figure 8] 1 is a schematic assembly diagram of another view of the valve seat and slider of a reversible solenoid valve according to one or more embodiments. [Figure 9] 1 is a schematic diagram of an assembled configuration of a valve seat and slider of a reversible solenoid valve according to one or more embodiments. [Figure 10] 1 is a schematic diagram of an assembled configuration of a valve seat and slider of a reversible solenoid valve according to one or more embodiments. [Figure 11] 1 is a schematic diagram of a sealing surface of a slider of a reversible solenoid valve according to one or more embodiments. [Figure 12] 1 is a schematic diagram of an assembled configuration of a valve seat and slider of a reversible solenoid valve according to one or more embodiments.

[0018] In the drawings, the meanings of the symbols are as follows: 100 reversible solenoid valve, 10 valve seat, 11 valve port, 12 valve port edge, 13 support point, 20 slider, 201 circular main surface, 202 strip-shaped convex surface, 21 sealing point, 210 arcuate concave groove, 22 sealing surface, 23 frame line, 30 driving member, 40 valve body, 41 valve chamber, 411 first chamber, 412 second chamber, 413 third chamber, 42 first end cover, 43 second end cover, 44 intermediate end cover, 45 first hole, 451 first capillary tube, 46 second hole, 461 second capillary tube, 50 valve core assembly, 51 piston. DETAILED DESCRIPTION OF THE INVENTION

[0019] The technical aspects of the embodiments of the present application will be described below clearly and completely with reference to the drawings in the embodiments of the present application, but it is clear that the described embodiments are only some of the embodiments of the present application and do not represent all of the embodiments. Based on the embodiments of the present application, all other embodiments that can be obtained by a person skilled in the art without creative efforts fall within the scope of protection of the present application.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0021] 3 , the reversible solenoid valve 100 provided by the present application includes a valve element 40, a valve core assembly 50, and an actuating member 30. The valve element 40 has a valve chamber 41, and the valve core assembly 50 can move within the valve chamber 41. An intermediate end cover 44 is provided within the valve chamber 41. A first end cover 42 and a second end cover 43 are provided at both ends of the valve element 40, respectively. The valve chamber 41 includes a first chamber 411, a second chamber 412, and a third chamber 413. The first end cover 42, the valve element 40, and the valve core assembly 50 cooperate to form the first chamber 411. The valve core assembly 50, the intermediate end cover 44, and the valve element 40 form the second chamber 412. The valve core assembly 50, the valve element 40, and the second end cover 43 form the third chamber 413.

[0022] The valve body 40 is provided with a first hole 45 and a second hole 46. The first hole 45 is connected to the second chamber 412, and the second hole 46 is connected to the third chamber 413. A first capillary tube 451 is provided in the first hole 45, and a second capillary tube 461 is provided in the second hole 46. The first capillary tube 451 and the second capillary tube 461 are connected to the driving member 30 so as to generate a pressure difference between both sides of the valve core assembly 50 and move the valve core assembly 50.

[0023] The valve core assembly 50 includes a slider 20 and a piston 51, the slider 20 being located in a first chamber 411, the piston 51 sealingly isolating a second chamber 412 and a third chamber 413, the second chamber 412 being located on a side of the piston 51 adjacent to the first chamber 411, and the third chamber 413 being located on a side of the piston 51 adjacent to the second end cover 43, and the second chamber 412 and the third chamber 413 can form a pressure difference to move the piston 51.

[0024] 4, the reversible solenoid valve 100 includes a valve seat 10 having a valve port 11 and a driving member 30, and the valve core assembly further includes a slider 20. The valve seat 10 is disposed within a valve body 40, the driving member 30 is disposed outside the valve body 40, and the slider 20 is connected to a piston 51 and slides within the valve seat 10 when driven by the piston 51.

[0025] Here, the driving member 30 drives the slider 20 to move in close contact with the valve seat 10 so that the sealing surface 22 of the slider 20 selectively seals the valve port 11, thereby realizing opening and closing control of the valve port 11 on the valve seat 10 when the reversible solenoid valve 100 is operated. It should be noted that the sealing surface 22 of the slider 20 in this application specifically refers to the end face of the slider 20 on the side that is in close contact with the valve seat 10.

[0026] As shown in Figures 1 to 6, in the present application, the sealing surface 22 of the slider 20 of the present application has a sealing point 21, which is located at the limit position of the edge 12 of the valve orifice of the valve seat 10 so that when the slider 20 straddles the valve orifice 11 together with the sealing point 21, the sealing surface 22 of the slider 20 can seal the valve orifice 11. Under the action of differential pressure, the position where the sealing point 21 of the slider 20 is located is above the plane where the edge 12 of the valve orifice is located.

[0023] With the above-described reasonable structural design, when the slider 20 is driven to close the valve, the reversible solenoid valve 100 can prevent the location of the sealing point 21 of the slider 20 from interfering with the edge 12 of the valve orifice of the valve seat 10 after the slider 20 is subjected to a differential pressure, thereby avoiding collision between the location of the sealing point 21 of the slider 20 and the edge 12 of the valve orifice of the valve seat 10. Furthermore, when the sealing surface 22 of the slider 20 seals the valve orifice 11 of the valve seat 10, the sealing effect on the valve orifice 11 is ensured, which plays a role in improving the product reliability of the reversible solenoid valve 100.

[0027] In the reversible solenoid valve 100 of the present application, when the sealing surface 22 of the slider 20 is driven to seal the valve port 11 of the valve seat 10, the slider 20 continues to move a certain distance after moving the sealing surface 22 to seal the valve port 11 and then stops. That is, it can be understood that in the reversible solenoid valve 100 of this embodiment, when the slider 20 seals the valve port 11 of the valve seat 10, the shortest vertical distance between the sealing point 21 of the sealing surface 22 of the slider 20 and the edge 12 of the valve port is the sealing width D of the slider 20. Therefore, the sealing point 21 of the slider 20 is provided corresponding to the limit position of the edge 12 of the valve orifice of the valve seat 10, and this limit position includes a first case in which, when the slider 20 is located at the boundary position where it seals the valve orifice 11, the sealing point 21 of the slider 20 is at a position corresponding to the portion of the edge 12 of the valve orifice of the valve seat 10 that is last to be sealed, and a second case in which, when the slider 20 finally stops, the sealing point 21 of the slider 20 is at a position corresponding to the portion of the edge 12 of the valve orifice of the valve seat 10 that is last to be sealed.

[0028] 4 to 9, the sealing point 21 belongs to the first case. Specifically, the sealing point 21 of the slider 20 can be located on the frame line 23 of the sealing surface 22 facing the valve orifice edge 12. The slider 20 can only rotate and tilt around the connecting line connecting the two support points 13 where the frame line 23 of the sealing surface 22 of the slider 20 intersects with the valve orifice edge 12 under the action of differential pressure. By locating the sealing point 21 on this frame line 23 to ensure that the slider 20 rotates and tilts on the valve seat 10 under the action of differential pressure when closing the valve, the position where the sealing point 21 of the slider 20 is located is always located on the plane where the valve orifice edge 12 of the valve seat 10 is located. That is, the sealing point 21 of the slider 20 will not be inserted into the valve orifice 11 when the slider 20 rotates. This prevents interference between the position of the sealing point 21 of the slider 20 and the edge 12 of the valve orifice of the valve seat 10, and also ensures effective sealing of the slider 20 against the valve orifice 11 of the valve seat 10 when the slider 20 closes the valve.

[0029] 4 to 6, in the reversible solenoid valve 100 provided by the first embodiment of the present application, the frame line 23 having the sealing point 21 of the sealing surface 22 of this embodiment is set as a straight line portion perpendicular to the direction in which the slider 20 moves on the valve seat 10. The frame line 23 having the sealing point 21 of the slider 20 of this embodiment simplifies the structure of the sealing surface 22 of this slider 20, making it easier to manufacture the slider 20 and reducing the manufacturing cost of the slider 20. Specifically, the sealing surface 22 of the slider 20 of this embodiment is rectangular, which further simplifies the structure of the slider 20. It should be noted that the sealing surface 22 of the slider 20 is not limited to that shown in the figure, and it goes without saying that those skilled in the art will understand that the frame line 23 having the sealing point 21 of the slider 20 can have any other shape, as long as the two support points 13 where the frame line 23 intersects with the edge 12 of the valve orifice and the sealing point 21 are located on the same straight line, and the sealing surface 22 of the slider 20 can seal against the valve orifice 11 when placed on the valve orifice 11 of the valve seat 10.

[0030] 7 and 8, a reversible solenoid valve 100 according to a second embodiment of the present invention has an arcuate groove 210 formed on the sealing surface 22 of the slider 20 at the end facing the edge 12 of the valve port, and a sealing point 21 located at the bottom of the arcuate groove 210. This structure allows the sealing surface 22 of the slider 20 for sealing the valve port 11 to have a different structure, thereby realizing a variety of structures for the slider 20 and enabling the slider 20 to be tailored for different applications. Here, the arcuate groove 210 includes two connected arcuate grooves, which are symmetrically arranged about the centerline of the slider 20, and the sealing point 21 of the slider 20 is located at the connection point of the two arcuate grooves. The two support points 13 where the sealing surface 22 and the valve orifice edge 12 intersect and the sealing point 21 are aligned on the same line, which ensures that the sealing point 21 of the slider is always aligned on the same plane as the valve orifice edge 12 of the valve seat 10, and also realizes the structural versatility of the slider 20. It should be noted that the arcuate groove is not limited to the one shown in the figure, and those skilled in the art will understand that the arcuate groove can have any other shape, as long as the two support points 13 where the sealing surface 22 and the valve orifice edge 12 intersect and the sealing point 21 are aligned on the same line, and the sealing point 21 is always aligned on the frame line 23 of the sealing surface 22 of the slider 20, and no further explanation will be given here.

[0031] Referring to FIG. 9, the reversible solenoid valve 100 provided by the third embodiment of the present application has a slider 20 whose structure is generally similar to that of the slider 20 of the second embodiment of the present application. The sealing surface 22 of the slider 20 of this embodiment is also provided with an arcuate groove 210 at the end facing the edge 12 of the valve port. The arcuate groove 210 is symmetrical with respect to the center line of the slider 20, and the sealing point 21 of the slider 20 is located at the center point of the groove bottom of the arcuate groove 210. In this embodiment, when the slider 20 closes the valve, the sealing point 21 of the slider 20 is located inside the two support points 13 where the sealing surface 22 of the slider 20 and the edge 12 of the valve orifice intersect. If the slider 20 rotates and tilts around the connecting line connecting the two support points 13 due to the action of a pressure difference, the sealing point 21 of the slider 20 will be located higher than the plane on which the edge 12 of the valve orifice of the valve seat 10 is located. This prevents interference between the position of the sealing point 21 of the slider 20 and the edge 12 of the valve orifice of the valve seat 10, and ensures effective sealing of the slider 20 against the valve orifice 11 of the valve seat 10 when closing the valve. It should be noted that the structure of the arcuate groove 210 of the slider 20 in this embodiment is not limited to the illustrated one. Those skilled in the art can realize that the arcuate groove 210 can have other shapes and structures based on satisfying the above conditions, but the description thereof will be omitted here.

[0032] 10 to 12, the sealing point 21 belongs to the second case. In addition to providing the sealing point 21 on the frame line 23 of the sealing surface 22, the sealing point 21 of the slider 20 may also be provided inside the sealing surface 22, thereby realizing a variety of structures for the sealing surface 22 of the slider 20 and enabling the slider 20 to be provided accordingly for different applications. Referring to FIGS. 10 and 11, in the reversible solenoid valve 100 provided in the fourth embodiment of the present application, the sealing surface 22 of the slider 20 includes a circular main surface 201 and a strip-shaped convex surface 202 provided on the circular main surface 201, and the sealing point 21 is provided at the center of the connecting line where the circular main surface 201 and the strip-shaped convex surface 202 are connected. As a result, when the slider 20 seals the valve orifice 11 of the valve seat 10, the outer edge of the strip-shaped convex surface 202 first interferes with the edge 12 of the valve orifice, preventing interference between the position where the sealing point 21 of the slider 20 is located and the edge 12 of the valve orifice of the valve seat 10, and further ensuring effective sealing of the slider 20 against the valve orifice 11 of the valve seat 10 when closing the valve. 12, the reversible solenoid valve 100 provided in the fifth embodiment of the present application has a slider 20 with a disk-like shape, and a sealing point 21 located within the sealing surface 22 of the slider 20. When the sealing surface 22 of this embodiment seals the valve orifice 11, the sum of twice the sealing width D and the diameter of the valve orifice 11 is smaller than the outer diameter of the sealing surface 22. Therefore, the outer diameter of the slider 20 of this embodiment is set to be large enough to prevent the outer edge of the slider 20 from interfering with the edge 12 of the valve orifice, which would otherwise cause the position of the sealing point of the slider 20 to interfere with the edge 12 of the valve orifice of the valve seat 10, and thus ensure effective sealing of the valve seat 10 with the valve orifice 11 when the slider 20 closes the valve.

[0033] It should be noted that the valve opening of the valve seat 10 of the reversible solenoid valve 100 of the present application is usually a general circular structure, but in some embodiments of the reversible solenoid valve 100, the valve opening of the valve seat 10 can be a polygonal structure, but this will not be explained here.

[0034] The technical features of the above-described embodiments can be combined in any desired manner. For the sake of brevity, not all possible combinations of the technical features in the above-described embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, any combination should be considered within the scope described in this specification.

[0035] The above-mentioned embodiments merely illustrate some embodiments of the present application, and although the descriptions are relatively specific and detailed, they should not be understood as limiting the scope of the claims of the present application. It should be noted that those skilled in the art may make some modifications and improvements without departing from the spirit of the present application, and all of them will fall within the scope of protection of the present application. Therefore, the scope of protection of the patent of the present application shall be determined according to the scope of the attached claims.

Claims

1. a valve seat having a valve port, a slider slidably connected to the valve seat, and a drive member, wherein the drive member can drive the slider to move in close contact with the valve seat so as to selectively seal the valve port with a sealing surface of the slider; a sealing surface of the slider having a sealing point located at an edge of the sealing surface along a moving direction of the slider, capable of contacting an edge of the valve orifice of the valve seat along the moving direction of the slider during movement, the sealing point being located at a limit position of the edge of the valve orifice of the valve seat so that the sealing surface of the slider can seal the valve orifice when the slider straddles the valve orifice together with the sealing point; the slider is configured so that the position of the sealing point of the slider is not lower than a plane on which the edge of the valve orifice is located under the action of a pressure difference; the sealing surface of the slider has an arcuate groove formed at an end facing the edge of the valve orifice, and the sealing point is located at a groove bottom of the arcuate groove.

2. 2. The reversible solenoid valve according to claim 1, wherein the arcuate groove includes two connected arcuate grooves, the two arcuate grooves are arranged symmetrically with respect to a center line of the slider, and a connection point of the two arcuate grooves is set as the sealing point.

3. 2. The reversible solenoid valve according to claim 1, wherein two support points where the sealing surface of the slider intersects with the edge of the valve port and the sealing point are provided on the same straight line.

4. 2. The reversible solenoid valve according to claim 1, wherein the number of the arcuate groove is one, the arcuate groove is symmetrical with respect to the center line of the slider, and the center point of the groove bottom of the arcuate groove is set as the sealing point.

5. 5. The reversible solenoid valve according to claim 4, wherein the sealing point of the slider is provided inside a connecting line of two support points where the sealing surface and the edge of the valve port intersect.

6. 2. The reversible solenoid valve according to claim 1, wherein the sealing surface is an end surface of the slider on the side that is in close contact with the valve seat.

7. 2. The reversible solenoid valve of claim 1, comprising a valve element and a valve core assembly, the valve core assembly including the slider and the piston, the valve element having a valve chamber, the valve core assembly being movable within the valve chamber, an intermediate end cover provided within the valve chamber, first and second end covers provided at both ends of the valve element, respectively, the valve chamber including a first chamber, a second chamber and a third chamber, the first end cover, the valve element and the valve core assembly cooperatively forming the first chamber, the valve core assembly, the intermediate end cover and the valve element forming the second chamber, and the valve core assembly, the valve element and the second end cover forming the third chamber.

8. 8. The reversible solenoid valve according to claim 7, wherein the valve body is provided with a first hole and a second hole, the first hole is connected to the second chamber, the second hole is connected to the third chamber, a first capillary is provided in the first hole, and a second capillary is provided in the second hole, the first capillary and the second capillary are connected to the driving member so as to generate a pressure difference between both sides of the valve core assembly to move the valve core assembly.

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