A solenoid valve

Abstract

The present invention provides a solenoid valve, comprising: a valve body and a coil; the valve body includes a valve seat member and a sleeve; the valve seat member includes a valve seat body portion and a connecting portion, the valve seat body portion is fixedly connected or integrally formed with the connecting portion, the connecting portion is fixedly connected with the sleeve, and the connecting portion has soft magnetism; the coil includes a coil body and a magnetic conductor, the coil body is connected with the magnetic conductor, the coil body includes a coil body through-hole portion, the magnetic conductor includes a magnetic conductor through-hole portion, a part of the valve body passes through the magnetic conductor through-hole portion and the coil body through-hole portion, and the valve body is connected with the coil; within the height range of the coil, there is a non-overlapping part between the projection of the connecting portion along the axis of the solenoid valve and the projection of the sleeve along the axis. After the coil is energized, the magnetic path generated by the coil can be effectively transmitted to the connecting portion, which can improve the operating performance of the solenoid valve.

Description

Technical Field

[0001] This application relates to the field of refrigeration control technology, and particularly to a solenoid valve.

Background Art

[0002] See Figure 17 , CN111692345A discloses a solenoid valve, which includes a housing 12. The housing 12 is fixedly connected to conduits 41 and 42. An attracting member 26 is fixedly arranged inside the housing 12, and a coil 33 is sleeved outside the housing 12. After the housing 12 and the coil 33 are installed, within the height range of the coil 33, the magnetic path generated by the coil 33 passes through the housing 12 and acts on the attracting member 26, so that the attracting member 26 attracts the plunger 27.

Summary of the Invention

[0003] The present invention provides a solenoid valve, including: a valve body and a coil;

[0004] The valve body includes a valve seat component and a sleeve;

[0005] The valve seat component includes a valve seat body part and a connecting part. The valve seat body part is fixedly connected or integrally formed with the connecting part. The connecting part is fixedly connected to the sleeve, and the connecting part has soft magnetism;

[0006] The coil includes a coil body and a magnetic conductor. The coil body is connected to the magnetic conductor, and the coil is sleeved on the valve body;

[0007] The magnetic conductor includes a lower part of the magnetic conductor. Within the height range of the coil, the orthographic projection of the connecting part along the axis of the valve body does not coincide with the orthographic projection of the sleeve along the axis, and there is a part where the orthographic projection of the connecting part along the axis of the valve body coincides with the orthographic projection of the lower part of the magnetic conductor along the axis.

[0008] For the solenoid valve of this application, after the coil is energized, the magnetic path generated by the coil can be effectively transmitted to the connecting part, which can improve the action performance of the solenoid valve.

Description of the Drawings

[0009] Figure 1 is the cross-sectional view after the valve body and the coil fixing frame of the solenoid valve of the present invention are fixed;

[0010] Figure 2 is the cross-sectional view of the coil of the present invention;

[0011] Figure 3 is this Figure 2 cross-sectional view of the coil body part in;

[0012] Figure 4 is Figure 2 structural schematic diagram of the magnetic conductor in;

[0013] Figure 5 is a cross-sectional view of the solenoid valve of the present invention;

[0014] Figure 6 is Figure 5 a schematic structural view after the valve body and the coil fixing bracket in [[ ]] are fixed;

[0015] Figure 7 is Figure 5 a schematic structural view after the coil and the buckle member in [[ ]] are assembled;

[0016] Figure 8 is Figure 5 a schematic structural view before the magnetic conductor and the buckle member in [[ ]] are assembled;

[0017] Figure 9 is Figure 5 a schematic structural view after the magnetic conductor and the buckle member in [[ ]] are assembled;

[0018] Figure 10 is a schematic structural view of the solenoid valve of the present invention from another angle;

[0019] Figure 11 is Figure 10 a bottom view of the solenoid valve in [[ ]];

[0020] Figure 12 is a schematic structural view of the solenoid valve provided with a magnetic conductor fixing groove;

[0021] Figure 13 is Figure 12 a right view of the solenoid valve in [[ ]];

[0022] Figure 14 is Figure 13 a partial enlarged view of [[ ]];

[0023] Figure 15 is a schematic structural view of a coil with another structure;

[0024] Figure 16 is a cross-sectional view after the valve body and the coil fixing bracket of the solenoid valve in the second embodiment are fixed;

[0025] Figure 17 is a cross-sectional view of the solenoid valve in the background art.

[0026] Among them, Figures 1-16 includes the following reference numerals:

[0027] 1 Valve body; 11 Valve seat component; 111 First interface part; 112 Valve seat through-hole part; 113 Valve seat body part; 114 Connection part; 12 Sleeve; 13 Valve port component; 131 Valve port; 132 Second interface part; 14 Spool component; 15 First connecting pipe part; 16 Second connecting pipe part; 17 Moving iron core; 18 Elastic part; 19 Retaining sleeve; 2 Coil; 21 Coil body; 211 Coil body through-hole part; 212 Skeleton; 213 Winding; 214 Encapsulation body; 215 Lead wire; 22 Magnetic conductor; 221 Magnetic conductor through-hole part; 222 Upper part of magnetic conductor; 223 Side part of magnetic conductor; 224 Lower part of magnetic conductor; 2241 Lower body part of magnetic conductor; 2242 Lower extension part of magnetic conductor; 225 Magnetic conductor fixing groove; 3 Coil fixing bracket; 31 Valve body connection part; 32 Coil connection part; 321 Positioning part; 322 First positioning part; 323 Second positioning part; 4 Buckle part; 41 Buckle positioning part; 42 Buckle receiving part; 421 First buckle receiving part; 422 Second buckle receiving part; 43 Buckle connection part; 431 Buckle contact part; 432 Buckle fastening part; 4321 First buckle fastening part; 4322 Second buckle fastening part; A Valve cavity; B First accommodation space; C Second accommodation space.

Detailed implementation manners

[0028] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Please specifically refer to Figures 1-5 , Figure 1 which is a cross-sectional view of the valve body and the coil fixing bracket of the solenoid valve of the present invention after being fixed; Figure 2 which is a cross-sectional view of the coil of the present invention; Figure 3 which is Figure 2 a cross-sectional view of the coil body part in Figure 4 which is Figure 2 a structural schematic diagram of the magnetic conductor in Figure 5 which is a cross-sectional view of the solenoid valve of the present invention.

[0030] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "first" and "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance; unless otherwise specified or stated, the term "plurality" means two or more; the terms "connection", "fixation", etc. should all be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0031] In the description of this specification, it should be understood that the orientation terms such as "upper" and "lower" described in the embodiments of this application are described from the angles shown in the drawings and should not be construed as limitations on the embodiments of this application. In addition, in the context, it should also be understood that when it is mentioned that a component is connected "above" or "below" another component, it can not only be directly connected "above" or "below" another component, but also be indirectly connected "above" or "below" another component through an intermediate component.

[0032] Please refer specifically to Figures 1-5 , the solenoid valve provided in this embodiment can be used in devices such as air conditioners, heat pump water heaters, chillers, vending machines, ice makers, freezers, etc. It mainly includes a valve body 1 (see Figure 1 ), a coil 2 (see Figure 2 ), a coil fixing bracket 3 (see Figure 6 ), and a buckle member 4 (see Figure 8 ).

[0033] Please refer to Figure 3 and Figure 4 , the coil 2 mainly includes a coil body 21 and a magnetic conductor 22. The coil body 21 includes a bobbin 212, a winding 213 wound around the bobbin 212, and an encapsulation body 214 that encapsulates the bobbin 212 and the winding 213. The winding 213 is connected with a lead 215. By controlling the on-off of the coil body 21, the spool component 14 (mentioned below) of the valve body 1 can be controlled to move in a direction approaching or away from the valve port 131 (mentioned below).

[0034] Please refer specifically to Figure 1 , the valve body 1 of the solenoid valve provided in this embodiment includes a valve seat component 11, a sleeve 12, and a valve port component 13; in this embodiment, the sleeve 12 and the valve seat component 11 are fixedly connected by welding, and the valve seat component 11 is made of a soft magnetic material, while the sleeve 12 is not a magnetic material; the valve seat component 11 and the valve port component 13 are fixedly connected by welding or other means, the valve seat component 11 and the valve port component 13 generally define a valve cavity A, and the valve port component 13 is provided with a valve port 131 penetrating its upper and lower surfaces, and the valve port 131 can communicate with the valve cavity A.

[0035] In addition, the solenoid valve provided in this embodiment further includes a first connection portion 15 and a second connection portion 16. The valve seat component 11 includes a first interface portion 111, and the valve port component 13 includes a second interface portion 132. In this embodiment, the first connection portion 15 and the first interface portion 111 are fixedly connected by welding or other means, and the second connection portion 16 and the second interface portion 132 are fixedly connected by welding or other means, so that the first connection portion 15 and the second connection portion 16 can communicate with the valve cavity A.

[0036] Please refer to Figure 5, a coil 2 is sleeved outside the sleeve 12, and the valve body 1 is fixedly connected to the coil 2; when the solenoid valve is subjected to a small external force, no relative deflection or displacement can occur between the valve body 1 and the coil 2, and the valve body 1 and the coil 2 can also be connected in a limiting manner: when the solenoid valve is subjected to a small external force, relative deflection or displacement can occur between the valve body 1 and the coil 2, but the two are still in a connected state. The moving iron core 17 has soft magnetism or permanent magnetism. When the coil 2 is energized, a magnetic force that interacts with each other can be generated between the moving iron core 17 and the valve seat component 11, so that the moving iron core 17 can overcome the elastic force of the elastic member 18 and move along the axial direction of the sleeve 12, thereby driving the valve core component 14 to overcome the elastic force of the elastic member 18 and move toward the valve port 131.

[0037] The specific working process of the solenoid valve provided in this embodiment is as follows: when the coil 2 is energized, the moving iron core 17 moves toward the valve seat component 11 under the action of the electromagnetic force and drives the valve core component 14 to move toward the direction close to the valve port 131. The valve core component 14 abuts against the valve port 131, and the valve port 131 is closed, so that the first connection part 15 and the second connection part 16 are not communicated; when the coil 2 is de-energized, the moving iron core 17 moves away from the valve seat component 11 under the action of the elastic force of the elastic member 18 and moves away from the valve port 131, so that the first connection part 15 and the second connection part 16 are communicated, and the fluid medium (such as refrigerant) can pass through the first connection part 15 through the valve cavity A to reach the second connection part 16, or from the second connection part 16 through the valve cavity A to reach the first connection part 15.

[0038] It should be noted that the above is only an illustration for a specific solenoid valve structure. It can be understood that the structures such as the valve core component 14 and the moving iron core 17 of the solenoid valve do not involve the core idea of the present invention. Therefore, the structures such as the valve core component 14 and the moving iron core 17 of the present invention can also use other different structures. For example, when the valve core component 14 abuts against the valve port 131, a channel for fluid to pass through is also provided between the valve port 131 and the valve core component 14, the valve port 131 is not in a closed state, and the first connection part 15 and the second connection part 16 are still communicated.

[0039] Please refer specifically to Figures 2-4, the coil body 21 provided in this embodiment includes a through-hole portion 211 of the coil body. The through-hole portion 211 of the coil body is generally a through-hole penetrating the upper and lower surfaces of the coil body 21. In addition, the magnetic conductor 22 includes a through-hole portion 221 of the magnetic conductor. The through-hole portion 221 of the magnetic conductor is a through-hole penetrating the upper and lower surfaces of the magnetic conductor 22. In this embodiment, the magnetic conductor 22 includes two through-hole portions 221 of the magnetic conductor. The valve body 1 passes through the through-hole portion 221 of the magnetic conductor located below and the through-hole portion 211 of the coil body from bottom to top, and finally passes out from the through-hole portion 221 of the magnetic conductor located above. The coil body 21 is connected to the magnetic conductor 22, and the magnetic conductor 22 can press the coil body 21 by itself. The coil body 21 is fixedly connected to the magnetic conductor 22: when the coil 2 is subjected to a small external force, relative deflection or displacement cannot occur between the coil body 21 and the magnetic conductor 22, or the coil body 21 and the magnetic conductor 22 are connected by a limit connection. When the coil 2 is subjected to a small external force, relative deflection or displacement can occur between the coil body 21 and the magnetic conductor 22, but the two are still in a connected state.

[0040] In this embodiment, the cross-section of the magnetic conductor 22 is generally in a "C" shape. The magnetic conductor 22 is sleeved outside the coil body 21 and has the function of guiding magnetism, which can make the magnetic field more concentrated. When the power of the coil 2 is the same, the magnetic force of the coil 2 can be increased; when the magnetic force of the coil 2 is the same, the working voltage of the coil 2 can be relatively reduced, which is more energy-saving and environmentally friendly.

[0041] The magnetic conductor 22 in this embodiment can be roughly divided into an upper part 222 of the magnetic conductor, a side part 223 of the magnetic conductor, and a lower part 224 of the magnetic conductor with the midline of the bent part as the boundary. In this embodiment, through-hole portions 221 of the magnetic conductor are provided in both the upper part 222 of the magnetic conductor and the lower part 224 of the magnetic conductor. The valve body 1 passes through the through-hole portions 221 of the magnetic conductor in the lower part 224 and the upper part 222 of the magnetic conductor. It should be noted that it is also possible to adopt a form in which a through-hole portion 221 of the magnetic conductor is only provided in the lower part 224 of the magnetic conductor, the valve body 1 passes through the lower part 224 of the magnetic conductor and is located in the through-hole portion 211 of the coil body, but does not pass out from above the magnetic conductor 22.

[0042] Such as Figure 1 , 5As shown in the figure, the moving iron core 17 is fixedly connected to one end of the valve core component 14 and installed inside the valve body 1. The valve seat component 11 with magnetic conduction function is fixedly connected to the sleeve 12, and the valve seat component 11 includes a valve seat through-hole part 112. The valve core component 14 passes through the valve seat through-hole part 112. The moving iron core 17 is located above the valve seat component 11 in the axial direction. One end of the elastic member 18 abuts against the moving iron core 17 (of course, the elastic member 16 can also be in the form of abutting against the valve core component 14), and the other end abuts against the valve seat component 11. In this way, when the coil 2 is energized to generate a magnetic force between the moving iron core 17 and the valve seat component 11, this magnetic force can cause the moving iron core 17 to be attracted by the valve seat component 11 and overcome the elastic force of the elastic member 18 to move within the sleeve 12, so that the valve core component 14 moves accordingly, and finally the valve core component 14 can abut against the valve port component 13.

[0043] Inside the above-mentioned sleeve 12, the connection and setting method of the valve core component 14, the moving iron core 17, the valve seat component 11 and the elastic member 18 has the advantages of simple structure and convenient assembly.

[0044] In this embodiment, the sleeve 12 is not a magnetic conductive material and does not have magnetic conductivity. The valve seat component 11 is a soft magnetic material and has magnetic conductivity. Its magnetization occurs when Hc is not greater than 1000 A / m. After the valve seat component 11 and the sleeve 12 are assembled, within the height range of the coil 2, the positive projection of the connecting part 114 along the axis of the valve body does not coincide with the positive projection of the sleeve 12 along the axis, and coincides with the positive projection of the lower part 224 of the magnetic conductor along this axis.

[0045] Through the above settings, after the coil 2 is energized, since there is no blockage by the sleeve 12 between the lower part 224 of the magnetic conductor and the connecting part 114 of this part, the magnetic flux generated by it can be reduced from being blocked by the sleeve 12 during the process of being transmitted to the valve seat component 11, thereby reducing the magnetic resistance. When the electromagnetic coil 2 has the same power, compared with the solenoid valve structure where the sleeve 12 is provided between the coil 2 and the connecting part 114 (other parameters remain unchanged), the magnetic force received by the moving iron core 17 is greater, so the action performance of the solenoid valve can be improved; when ensuring the action performance of the solenoid valve, compared with the solenoid valve structure where the sleeve 12 is provided between the coil 2 and the connecting part 114 (other parameters remain unchanged), the power of the coil 2 can be reduced to achieve the action performance of the solenoid valve where the sleeve 12 is provided between the coil 2 and the connecting part 114 (other parameters remain unchanged). Therefore, the power required by the coil 2 is relatively small, which is more energy-saving and environmentally friendly.

[0046] In addition, when the lower part 224 of the magnetic conductor contacts the connecting part 114, the magnetic path generated by the coil 2 can be directly transmitted to the connecting part 114 through the magnetic conductor 22, which can further improve the magnetic conduction effect.

[0047] Please refer to Figure 1 For the solenoid valve provided in this embodiment, the valve seat component 11 includes a valve seat body portion 113 and a connecting portion 114. The valve seat body portion 113 and the connecting portion 114 can be processed separately and then fixedly connected to each other, or can be integrally processed and formed. In this embodiment, the valve seat body portion 113 and the connecting portion 114 are integrally processed and formed. Integrally processing and forming the valve seat body portion 113 and the connecting portion 114 can improve the coaxiality of the valve seat body portion 113 and the connecting portion 114, making the spool component 14 operate more smoothly during the actuation process. In addition, the process of fixedly connecting the valve seat body portion 113 and the connecting portion 114 after separate processing is also omitted, and the process is relatively simple. In the height direction of the solenoid valve, the connecting portion 114 is generally located above the valve seat body portion 113, and the connecting portion 114 is fixedly connected to the sleeve 12. At this time, the valve seat body portion 113 also has soft magnetism. Being like this for the valve seat body portion 113 also increases the soft magnetic material of the valve body 1, which is beneficial to the transmission of the magnetic path.

[0048] It is worth noting that in this embodiment, the connecting portion 114 is the part generally located above the valve cavity A. In the present invention, there does not need to be a clear boundary between the connecting portion 114 and the valve seat body portion 113.

[0049] For the way of fixedly connecting the connecting portion 114 and the sleeve 12, a ring-shaped step can be processed and formed on the outer edge portion of the connecting portion 114. This ring-shaped step is the step portion 1141. The step portion 1141 includes a step horizontal portion 11411 and a step vertical portion 11412. The step horizontal portion 11411 is the portion that is relatively horizontal with respect to the step vertical portion 11412, and the step vertical portion 11412 is generally the portion that is relatively closer to the vertical state with respect to the step horizontal portion 11411. During the process of fixedly connecting the sleeve 12 and the connecting portion 114, the open end of the sleeve 12 can be inserted along the step vertical portion 11412 first. The step vertical portion 11412 can play a role of guiding and aligning during the insertion process of the sleeve 12, and can also increase the coaxiality after the sleeve 12 and the valve seat component 11 are fixedly connected. When the sleeve 12 contacts the step horizontal portion 11411, then the valve seat component 11 and the sleeve 12 are welded and fixed.

[0050] In this embodiment, the connecting portion 11 is provided with a stepped portion 1141. The horizontal stepped portion 11411 abuts against the sleeve 12. Therefore, when the coil 2 is energized, the magnetic path reaching the connecting portion 114 can be roughly divided into two parts (the part passing through the sleeve 12 and the part not passing through the sleeve 12). The two parts are roughly bounded by the horizontal stepped portion 11411. In this embodiment, after the coil 2 and the valve body 1 are fixedly assembled, the horizontal stepped portion 11411 is within the height range of the coil 2 (inside the through-hole portion 211 of the coil body or inside the through-hole portion 221 of the magnetic conductor). At this time, the magnetic path generated when the coil 2 is energized can reach the connecting portion 114 without passing through the sleeve 12, having a better magnetic conduction effect.

[0051] Please specifically refer to Figure 1 、 Figure 5 The solenoid valve provided in this embodiment further includes a retaining sleeve 19. The retaining sleeve 19 has a generally hollow structure. Specifically, the retaining sleeve 19 is located in the valve cavity A and is fixedly connected to the valve seat component 11. The spool component 14 passes through the retaining sleeve 19.

[0052] Taking the first connection portion 15 as the medium inlet pipe and the second connection portion 16 as the medium outlet pipe as an example, when the solenoid valve is in the open valve state, the medium flows from the first connection pipe 15 to the second connection pipe 16. At this time, the retaining sleeve 19 can reduce the situation where the fluid medium impacts the spool component 14 downward. On the premise that the elastic coefficient of the elastic member 18 is the same, the solenoid valve can withstand a higher pressure difference of the medium. At the same time, the voltage of the coil 2 required for closing the valve is also relatively small, and it can also reduce the situation where the medium impacts the spool component 14, and the spool component 14 is relatively not prone to deflection.

[0053] In summary, the above-mentioned retaining sleeve 19 can improve the characteristic indexes of the solenoid valve and reduce the phenomenon that the sealing portion 151 of the spool component 14 moves toward the valve port 131 under the impact of the medium, resulting in abnormal blockage of the valve port 131.

[0054] In addition, please refer to Figure 6 , Figure 6 is Figure 5 a schematic structural diagram of the valve body and the coil fixing frame fixed in

[0055] The solenoid valve provided in this embodiment further includes a coil fixing bracket 3. The coil fixing bracket 3 includes a valve body connecting portion 31 and a coil connecting portion 32. The valve body connecting portion 31 is generally annular, and its outer sleeve is fixed to the valve body 1 and fixedly connected to the valve body 1. The coil connecting portion 32 extends in a radial direction away from the midline of the valve body 1 relative to the valve body connecting portion 31. The valve body connecting portion 31 and the coil connecting portion 32 can be fixedly connected in the way of two components, or can be integrally formed into the valve body connecting portion 31 and the coil connecting portion 32 by one component. In this embodiment, the valve body connecting portion 31 and the coil connecting portion 32 are integrally formed by one component.

[0056] In this embodiment, the number of the coil connecting portions 32 is 3. In practical applications, the number of the coil connecting portions 32 can also be set to 1 or more than 2 (including two). Setting more than 2 coil connecting portions 32 can select the installation angle of the coil 2 and the valve body 1. In addition, the present invention does not specifically limit the width of the coil connecting portion 32. For example, when the number of the coil connecting portions 32 is set to 1, the coil connecting portion 32 can extend at an equal angle of approximately 180° along the circumference of the valve body connecting portion 31. Of course, the present invention does not limit the number of the positioning portions 321 on the coil connecting portion 32 either. For example, when the coil connecting portion 32 extends approximately 180° along the circumference of the valve body connecting portion 31, there is more space on the coil connecting portion 32 to set multiple positioning portions 321.

[0057] In this application, the valve body connecting portion 31 is generally the part where the coil fixing bracket 3 is connected to the valve body 1, and the coil connecting portion 32 is generally the part where the coil fixing bracket 3 is connected to the coil 2. There is no clear boundary between the coil connecting portion 32 and the valve body connecting portion 31.

[0058] In this embodiment, the valve body connecting portion 31 and the valve body 1 are fixedly connected by welding. Of course, the valve body 1 and the coil fixing bracket 3 can also be fixedly connected by interference fit, crimping and other methods.

[0059] Please refer specifically to Figures 7-8 , Figure 7 is Figure 5 in Figure 7 is Figure 5 the structural schematic diagram after the coil and the buckle are assembled in Figure 8 is Figure 5 the structural schematic diagram before the magnetic conductor and the buckle are assembled in

[0060] The buckle 4 can be formed by stamping a steel plate (or steel strip) with good elasticity. The buckle 4 generally includes a buckle positioning portion 41, a buckle accommodating portion 42 and a buckle connecting portion 43. The buckle connecting portion 43 is connected to the magnetic conductor 22 (the connection method will be mentioned later).

[0061] Please refer specifically to Figure 9 、 Figure 13 、 Figure 14 , the buckle positioning part 41 is roughly located at the middle position of the buckle 4. The buckle positioning part 41 can form an upward convex structure of the buckle 4 through a stamping process. In addition, the buckle accommodating part 42 includes a first buckle accommodating part 421 and a second buckle accommodating part 422. The first buckle accommodating part 421 and the second buckle accommodating part 422 are roughly located on both sides of the buckle positioning part 41 respectively. A gap is provided between the first buckle accommodating part 421 and the lower part 224 of the magnetic conductor, and this gap forms a first accommodating space B. Specifically, the first accommodating space B is, in the axial direction, from the projection of the first buckle accommodating part 421 facing the lower part 224 of the magnetic conductor to the lower part 224 of the magnetic conductor and down to the space where the buckle 4 is located; a gap is also provided between the second buckle accommodating part 422 and the lower part 224 of the magnetic conductor, and this gap forms a second accommodating space C. Specifically, the second accommodating space C is, in the axial direction, from the projection of the second buckle accommodating part 422 facing the lower part 224 of the magnetic conductor to the lower part 224 of the magnetic conductor and down to the space where the buckle 4 is located; after the buckle connecting part 43 is fixedly connected to the magnetic conductor 22, the buckle positioning part 41 protrudes towards the lower part 224 of the magnetic conductor relative to the buckle accommodating part 42.

[0062] The number of the buckle connecting parts 43 is 2. The buckle connecting parts 43 are respectively located on both sides of the buckle 4. The first buckle accommodating part 421 is closer to the buckle connecting part 43 relative to the buckle positioning part 41, and the second buckle accommodating part 422 is closer to the buckle connecting part 43 relative to the buckle positioning part 41.

[0063] With the above settings, when the coil 2 and the valve body 1 need to be connected, only the valve body 1 needs to be passed through the magnetic conductor through-hole part 221 and the coil body through-hole part 211, and then the valve body 1 is rotated by a certain angle relative to the coil 2 so that at least part of the coil connecting part 32 is located in the first accommodating space B and the second accommodating space C, and the buckle positioning part 41 abuts against the coil connecting part 32 to connect the coil 2 and the valve body 1.

[0064] Please continue to refer to Figure 14 , in this embodiment, the minimum distance between the buckle positioning part 41 and the lower part 224 of the magnetic conductor is D1. It can be understood that D1 should be greater than or equal to 0. When D1 is equal to 0, before the coil 2 and the valve body 1 are fixedly assembled, the buckle positioning part 41 abuts against the lower part 224 of the magnetic conductor; when D1 is greater than 0, before the coil 2 and the valve body 1 are fixedly assembled, a predetermined distance is provided between the buckle positioning part 41 and the lower part 224 of the magnetic conductor.

[0065] In addition, the thickness of the coil connection portion 32 at the position where it is intended to abut against the snap - positioning portion 41 is D2. In order to better achieve the abutment between the snap - positioning portion 41 and the coil connection portion 32, D1 should be less than or equal to D2. The coil connection portion 32 abutting against the snap - positioning portion 41 here refers to the state before the coil connection portion 32 abuts against the snap - positioning portion 41.

[0066] Through the above settings, it is possible to make the snap - positioning portion 41 abut against the coil connection portion 32, and at least part of the coil connection portion 32 is located in the first accommodation space B and the second accommodation space C. The coil fixing frame 3 is fixedly connected to the valve body 1, and the snap - fitting member 4 is fixedly connected to the magnetic conductor 22, so that the coil 2 is fixedly connected to the valve body 1.

[0067] For the solenoid valve of the present application, after the valve body 1 is inserted into the magnetic conductor through - hole portion 221 and the coil body through - hole portion 211, only by rotating the coil 2 relative to the valve body 1 so that the coil connection portion 32 abuts against the snap - positioning portion 41, the connection and assembly of the coil 2 and the valve body 1 can be realized, which is relatively convenient. When the coil 2 and the valve body 1 need to be separated, only by rotating the coil 2 relative to the valve body 1, when the coil connection portion 32 and the snap - positioning portion 41 change from the abutting state to the non - abutting state, the coil 2 can be separated from the valve body 1, and the operation is relatively convenient.

[0068] Please refer to Figure 6 、 10 -11, Figure 6 is Figure 5 the schematic structural diagram after the valve body and the coil fixing frame are fixed in Figure 10 It is the schematic structural diagram of another angle of the solenoid valve of the present invention; Figure 11 is Figure 10 the bottom view of the solenoid valve in

[0069] In this embodiment, in order to increase the connection effect between the coil 2 and the valve body 1, the coil connection portion 32 of the present application further includes a positioning portion 321. In this embodiment, the positioning portion 321 is in the form of a notch.

[0070] The coil connection portion 32 of this embodiment further includes a first positioning portion 322 and a second positioning portion 323. There is a notch between the first positioning portion 322 and the second positioning portion 323. At this time, the first positioning portion 322 and the second positioning portion 323 define the positioning portion 321, that is, at least part of the first positioning portion 322 and at least part of the second positioning portion 323 constitute at least part of the positioning portion 321. In this embodiment, a section of the first positioning portion 322 and the second positioning portion 323 close to each other defines the positioning portion 321.

[0071] When assembling the coil 2 and the valve body 1, the outer edge of the first positioning portion 322 or the second positioning portion 323 rotates to abut against the buckle engaging portion 41. By applying force, the buckle engaging portion 41 can be deformed. After the valve body 1 rotates relative to the coil 2 by a certain angle, the buckle engaging portion 41 can abut against the first positioning portion 322 and the second positioning portion 323, realizing the snap-fitting and fixing of the coil fixing frame 3 and the buckle member 4.

[0072] With the above settings, at least part of the first positioning portion 322 is located in the first accommodation space B, at least part of the second positioning portion 323 is located in the second accommodation space C, and the first positioning portion 322 and the second positioning portion 323 abut against the buckle engaging portion 41.

[0073] At this time, the valve body 1 and the coil 2 are in an assembled state, and there is an overlapping part in the projection of the positioning portion 321 and the buckle engaging portion 41 passing through the central axis of the valve body 1, that is, at least part of the buckle engaging portion 41 is located in the space of the positioning portion 321, and the buckle engaging portion 41 abuts against the positioning portion 321.

[0074] With the above settings, if it is necessary to separate the valve body 1 and the coil 2 in the assembled state, when rotating the valve body 1 relative to the coil 2, it is necessary to overcome the elastic force of the buckle member 4, so that the buckle engaging portion 41 deforms in the axial direction of the valve body 1. It has to overcome the frictional force between the first positioning portion 322 or the second positioning portion 323 (depending on the rotation direction of the valve body 1 relative to the coil 2) and the buckle engaging portion 41, which is relatively difficult. Therefore, the structure of connecting the valve body 1 and the coil 2 has good connection effect and connection reliability.

[0075] In the above structure of connecting the valve body 1 and the coil 2, the distance between the position where the first positioning portion 322 abuts against the buckle engaging portion 41 and the surface of the first positioning portion 322 relatively close to the lower part 224 of the magnetic conductor is D2, and the distance between the buckle engaging portion 41 and the lower part of the magnetic conductor is D1. At this time, D1 is still less than or equal to D2.

[0076] Of course, the positioning portion 321 of this embodiment can also adopt the form of a through hole or a groove. When the positioning portion 321 adopts the above form and the valve body 1 is fixedly connected to the coil 2, there is an overlapping part in the projection of the positioning portion 321 and the buckle engaging portion 41 passing through the central axis of the valve body 1.

[0077] Please refer specifically to Figures 10-11, the provision of holes or grooves can be used for the snap - locking part 41 to abut against them, and the snap - locking part 41 is at least partially located in the space of the through - hole or groove. If the valve body 1 and the coil 2 are to be separated when assembled, when the valve body 1 is rotated relative to the coil 2, it is also necessary to overcome the elastic force of the snap - fitting member 4, causing the snap - locking part 41 to deform in the axial direction of the valve body 1 so that the snap - locking part 41 slides out of the above - mentioned through - hole or groove. It has to overcome the frictional force between the first positioning part 322 or the second positioning part 323 (depending on the direction of rotation of the coil 2 relative to the valve body 1) and the snap - locking part 41, which is relatively difficult. Therefore, the structure of connecting the valve body 1 and the coil 2 has good connection effect and connection reliability.

[0078] Please refer specifically to Figure 9 , Figure 9 is Figure 5 the structural schematic diagram of the magnetic conductor and the snap - fitting member after assembly;

[0079] In this embodiment, the snap - connecting part 43 is fixedly connected to the magnetic conductor 22. Specifically, the snap - connecting part 43 includes a snap - contact part 431 and a snap - fastening part 432. Before the snap - fitting member 4 is fixedly assembled with the magnetic conductor 22, usually, the snap - contact part 431 of the snap - fitting member 4 can be first brought into contact with the lower end surface of the lower part 224 of the magnetic conductor, and then the two ends of the snap - fitting member 4 are flanged along the side end of the lower part 422 of the magnetic conductor, so that the snap - fitting member 4 is held tightly on the upper surface of the lower part 224 of the magnetic conductor.

[0080] At this time, the snap - fastening part 432 includes a first snap - fastening part 4321 and a second snap - fastening part 4322. The first snap - fastening part 4321 is located at the side end of the lower part 224 of the magnetic conductor, and the second snap - fastening part 4322 is bent towards the direction close to the lower part 224 of the magnetic conductor relative to the first snap - fastening part 4321.

[0081] The provision of the snap - fastening part 432 can enable the snap - fitting member 4 and the magnetic conductor 22 to be fixedly connected by riveting, and this connection method is relatively reliable.

[0082] In order to further fasten the snap - fitting member 4 on the magnetic conductor 22, welding operations can be adopted between the snap - fastening part 432 and the magnetic conductor 22. Specifically, spot - welding operations can be performed between the first snap - fastening part 4321 and / or the second snap - fastening part 4322 and the magnetic conductor 22, which can enhance the fastening effect between the snap - fitting member 4 and the magnetic conductor 33.

[0083] It is worth noting that the E-type fixed connection between XX and XX described in this specification is not limited to only one type of connection between XX and XX, but should be understood as the connection between XX and XX including the E-type. For example, in this embodiment, the clip 4 and the magnetizer 22 can be first fixedly connected by riveting and then fixedly connected by welding, and this connection method does not conflict with the statement that "the clip and the magnetizer are fixed by riveting".

[0084] Please refer to Figure 11 In order to reduce the situation where the snap member 4 is displaced in the direction of escaping from the lower part of the magnet 22 after being fixedly connected to the magnet 22, the magnet lower part 224 provided in this embodiment includes a magnet lower body part 2241 and a magnet lower extension part 2242, and the magnet lower extension part 2242 is located on the escaping side of the first snap fastening part 4321. In this embodiment, the magnet lower extension part 2242 extends along the side of the magnet lower body part 2241, and when the snap member 4 is intended to be displaced in the direction of escaping from the magnet lower part 224, the first snap fastening part 4321 can be against the magnet lower extension part 2242, which can avoid the snap member 4 from escaping from the magnet lower part 224 as much as possible, and at the same time limit the displacement of the snap member 4 relative to the magnet lower part 224.

[0085] Please refer to Figure 14 After the snap member 4 is assembled and fixed with the magnet 33, there is a certain gap D3 between the snap accommodating portion 42 and the lower end surface of the lower portion 224 of the magnet, and the gap D3 can be set to be greater than or equal to the thickness of the coil connecting portion 32. Through the above setting, when the coil 2 and the valve body 1 are assembled, the coil connecting portion 32 of the coil fixing frame 3 can be easily transferred into the first accommodating space B or the second accommodating portion C, making the assembly of the coil 2 and the valve body 1 more convenient.

[0086] Please refer to Figures 12-13 In the present embodiment, the magnetizer 22 further includes a magnetizer fixing groove 225, which is located at the magnetizer lower portion 224 and the magnetizer fixing groove 225 passes through and connects the upper and lower surfaces of the magnetizer lower portion 224, and the second snap-fastening portion 4322 is further bent toward the magnetizer fixing groove 225, so that the second snap-fastening portion 4322 is at least partially located in the space within the magnetizer fixing groove 225.

[0087] By setting the magnet positioning groove 225 and the second snap fastening portion 4322, the fixed position of the magnet 22 and the snap member 4 can be further increased, making the connection between the snap member 4 and the magnet 22 more secure, further increasing the connection quality and reliability between the coil 2 and the valve body 1, and further strengthening the fastening effect of the snap member 4.

[0088] Of course, the magnetic conductor 22 of the present invention can also adopt other forms. For example, please specifically refer to Figure 15 ; Figure 15 which is a schematic structural diagram of a coil with another structure;

[0089] The structure of the magnetic conductor 22 of the coil 2 is slightly different. The magnetic conductor 22 of this embodiment includes two side portions 223 of the magnetic conductor. When looking from the direction of embedding the magnetic conductor 22 into the coil body 21, the cross-section of the magnetic conductor 22 is approximately in the shape of a "square". The snap contact portion 431 of the snap member 4 contacts the lower side surface of the lower portion 224 of the magnetic conductor. Then, the snap fastening portions 432 at both ends of the snap member 4 are subjected to flanging and bending riveting treatment to form a first snap fastening portion 4321 and a second snap fastening portion 4322, such that the first snap fastening portion 4321 is located at the outer end of the lower portion 224 of the magnetic conductor, and the second snap fastening portion 4322 is close to the upper end surface of the lower portion 224 of the magnetic conductor, thus realizing the fixed connection between the magnetic conductor 22 and the snap member 4.

[0090] In order to further fasten the snap member 4 on the magnetic conductor 22, a welding operation can be adopted between the snap fastening portion 432 and the magnetic conductor 22. Specifically, spot welding operations can be performed between the first snap fastening portion 4321 and / or the second snap fastening portion 4322 and the magnetic conductor 22, which can enhance the fastening effect between the snap member 4 and the magnetic conductor 22.

[0091] Second Embodiment

[0092] Please specifically refer to Figure 16 , Figure 16 which is a cross-sectional view of the solenoid valve in the second embodiment.

[0093] In this embodiment, the valve seat body portion 113 and the connecting portion 114 adopt a method of separate machining and then fixed connection. Specifically, the valve seat body portion 113 can be formed by turning or metal stamping. After the valve seat body portion 113 and the connecting portion 114 are respectively processed, the two are fixed and connected by welding or other means.

[0094] In this embodiment, after the coil 2 and the valve body 1 are installed, within the height range of the coil 2 (that is, the part of the connecting portion 114 within the height range of the coil 2 and the part of the sleeve 12 within the height range of the coil 2), it still satisfies that the positive projection of the connecting portion 114 along the axis of the valve body and the positive projection of the sleeve 12 along the axis do not overlap, and there is an overlapping part with the positive projection of the lower portion 224 of the magnetic conductor along this axis.

[0095] With the above settings, for the solenoid valve provided in this embodiment, within the height direction of the coil 2, at least a part of the connecting portion 114 is located below the sleeve 12. When the coil 2 is energized and the magnetic path generated is transmitted to the connecting portion 114, at least the part of the connecting portion 114 located below the sleeve 12 will not be blocked by the sleeve 12, and within the height range of the coil 2, the distance for the magnetic path generated by the coil 2 to reach the connecting portion 114 is relatively small, which can increase the magnetic conduction effect of the solenoid valve.

[0096] It should be noted that in this embodiment, the valve seat body portion 113 may or may not have soft magnetism, and it is only necessary to ensure that the connecting portion 114 is made of soft magnetic material.

[0097] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of protection of the present application.

Claims

1. A solenoid valve, characterized in that, Comprising: A valve body (1) and a coil (2); The valve body (1) includes a valve seat component (11) and a sleeve (12); The valve seat component (11) includes a valve seat body portion (113) and a connecting portion (114). The valve seat body portion (113) is fixedly connected or integrally formed with the connecting portion (114). The connecting portion (114) is fixedly connected to the sleeve (12), and the connecting portion (114) has soft magnetism; The coil (2) includes a coil body (21) and a magnetic conductor (22). The coil body (21) is connected to the magnetic conductor (22), and the coil (2) is sleeved on the valve body (1); The magnetic conductor (22) includes a lower magnetic conductor portion (224). Within the height range of the coil (2), the orthographic projection of the connecting portion (114) along the axis of the valve body (1) does not coincide with the orthographic projection of the sleeve (12) along the axis, and there is an overlapping portion between the orthographic projection of the connecting portion (114) along the axis of the valve body (1) and the orthographic projection of the lower magnetic conductor portion (224) along the axis.

2. The solenoid valve according to claim 1, wherein, The connecting portion (114) includes a stepped portion (1141). The stepped portion (1141) includes a stepped horizontal portion (11411) and a stepped vertical portion (11412). The sleeve (12) is sleeved on the stepped vertical portion (11412), and the stepped horizontal portion (11411) contacts the sleeve (12).

3. The solenoid valve according to claim 2, characterized in that, After the valve body (1) and the coil (2) are installed, the stepped horizontal portion (11411) is within the height range of the coil (2).

4. The solenoid valve according to any one of claims 1 to 3, characterized in that, It further includes a moving iron core (17), a valve core (14), and an elastic member (18). The moving iron core (17) has permanent magnetism or soft magnetism. The moving iron core (17) is fixedly connected to the valve core (14). The valve seat component (11) includes a valve seat through-hole portion (112). The valve core (14) passes through the valve seat through-hole portion (112). One end of the elastic member (18) abuts against the valve seat component (11), and the other end of the elastic member (18) abuts against the moving iron core (17) or the valve core (14).

5. The solenoid valve according to claim 4, wherein The valve seat body portion (113) and the connecting portion (114) are integrally formed. It further includes a valve port component (13). The valve port component (13) includes a valve port (131). The valve port component (13) is fixedly connected to the valve seat component (11), and the valve core (14) can abut against the valve seat component (11).

6. The solenoid valve according to claim 1, characterized in that, The magnetic conductor (22) contacts the connecting portion (114).

7. The solenoid valve according to any one of claims 1-3, 5, and 6, characterized in that, It further includes a coil fixing bracket (3) and a buckle member (4); The coil fixing bracket (3) includes a coil connecting portion (32). The coil fixing bracket (3) is fixedly connected to the valve body (1); The buckle member (4) includes a buckle connection part (43), and the buckle connection part (43) is fixedly connected to the magnetic conductor (22); the buckle member (4) includes a buckle accommodation part (42), and the buckle accommodation part (42) includes a first buckle accommodation part (421) and a second buckle accommodation part (422); the buckle member (4) includes a buckle positioning part (41), and the buckle positioning part (41) protrudes towards the lower part (224) of the magnetic conductor relative to the buckle accommodation part (42). The buckle positioning part (41) and the coil connection part (32) can abut against each other so that the coil (2) is connected to the valve body (1).

8. The solenoid valve according to claim 7, wherein, There are two buckle connection parts (43), and the two buckle connection parts (43) are respectively located on both sides of the buckle member (4). The first buckle accommodation part (421) is closer to the buckle connection part (43) relative to the buckle positioning part (41), and the second buckle accommodation part (422) is closer to the buckle connection part (43) relative to the buckle positioning part (41).

9. The solenoid valve according to claim 7, wherein It further includes a first accommodation space (B) and a second accommodation space (C). The first buckle accommodation part (421) and the lower part (224) of the magnetic conductor form the first accommodation space (B), and the second buckle accommodation part (422) and the lower part (224) of the magnetic conductor form the second accommodation space (C). In the state where the valve body (1) and the coil (2) are assembled, at least a part of the coil connection part (32) is located in the first accommodation space (B) and the second accommodation space (C).

10. The solenoid valve according to claim 7, characterized in that, The buckle connection part (43) includes a buckle contact part (431) and a buckle fastening part (432). The buckle contact part (431) contacts the lower part (224) of the magnetic conductor. The buckle fastening part (432) includes a first buckle fastening part (4321) and a second buckle fastening part (4322). The first buckle fastening part (4321) is located outside the lower part (224) of the magnetic conductor. The second buckle fastening part (4322) is bent towards the direction close to the lower part (224) of the magnetic conductor relative to the first buckle fastening part (4321). The distance between the buckle contact part (431) and the axis of the valve body (1) is not less than the distance between the coil connection part (32) and the axis of the valve body (1).

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