CN220102233U - Electromagnetic valve - Google Patents

Abstract

The present utility model provides a solenoid valve comprising: the valve body is internally provided with a cavity, and the cavity is provided with an assembly port; the movable assembly is movably arranged in the cavity and used for controlling the electromagnetic valve to be opened or closed; the cover plate is arranged at the assembly opening and comprises a plate body and a solder blocking structure; the circumference of the plate body is provided with a welding position welded with the inner wall of the assembly port; the solder blocking structure is arranged in the middle of the plate body in a protruding mode, and the solder blocking structure stops the solder at the welding position from flowing in the direction deviating from the welding position so as to seal the assembly opening. According to the solder blocking structure, solder on a welding position can be effectively stopped from flowing in a direction deviating from the welding position during welding, so that the solder is concentrated near the welding position, and further, the cover plate and the valve body are fully welded; meanwhile, the solder blocking structure also effectively prevents the solder flowing reversely from forming an irregular structure on the surface of the cover plate, and further improves the appearance of the electromagnetic valve.

Description

Electromagnetic valve

Technical Field

The utility model relates to the technical field of fluid control components, in particular to an electromagnetic valve.

Background

At present, in the technical field of refrigeration, an electromagnetic valve is a refrigerant flow control component of refrigeration equipment, is generally applicable to equipment such as an air conditioner, and generally comprises the following working processes: with the energizing or deenergizing of the coil, the electromagnetic valve is opened or closed in the refrigerating equipment such as air conditioner, thereby controlling the circulation and interruption of the refrigerant.

Solenoid valves of the prior art generally comprise a valve body having a cavity therein and a cover plate connected to the valve body by means of welding (e.g., brazing) and effectively sealing the cavity therein; in the welding process, due to the influences of external factors such as the relative positions of the cover plate and the valve body, gravity and the like, welding flux can flow in opposite directions of the welding seam and the welding seam simultaneously during welding, the welding flux at the welding seam part is not fully filled in the welding seam part due to the flow in the opposite directions, so that the problems of insufficient welding between the cover plate and the valve body, leakage of a cavity and the like can occur, and meanwhile, the welding flux flowing in the opposite directions can form an irregular structure on the surface of the cover plate after solidification, so that the appearance attractiveness and consistency of the whole electromagnetic valve are affected.

In the electromagnetic valve in the prior art, the welding ends of the cover plate and the valve body are usually subjected to conventional chamfering design to form small grooves, at least one part of the small grooves can contain a part of solder during welding so as to ensure the effect of welding and fixing the cover plate on the valve body, but the small grooves still cannot solve the problem that the solder flows in the opposite direction of the welding seam during welding, and further the problem that the filling of the solder to the small grooves still exists.

Disclosure of Invention

The utility model provides an electromagnetic valve, which solves the problem that the welding between a cover plate and a valve body is insufficient because welding flux flows in the opposite direction of a welding line during welding of the cover plate in the prior art.

In order to solve the above problems, the present utility model provides a solenoid valve comprising: the valve body is internally provided with a cavity, and the cavity is provided with an assembly port; the movable assembly is movably arranged in the cavity and used for controlling the electromagnetic valve to be opened or closed; the cover plate is arranged at the assembly opening and comprises a plate body and a solder blocking structure; the circumference of the plate body is provided with a welding position welded with the inner wall of the assembly port; the solder blocking structure is arranged in the middle of the plate body in a protruding mode, and the solder blocking structure stops the solder at the welding position from flowing in the direction deviating from the welding position so as to seal the assembly opening.

Further, the solder blocking structure is a convex column structure, one end of the convex column structure in the axial direction is fixedly arranged on the plate body, and the curved surface of the convex column structure in the circumferential direction stops solder flowing away from the welding position.

Further, the length A of the convex column structure in the axial direction is in the numerical range of 0.2-0.5 mm.

Optionally, a through hole is formed in the middle of the convex column structure, the axis of the through hole is collinear with the axis of the convex column structure, and the convex column structure provided with the through hole is of an annular structure.

Further, the plate body has a solder buffer between the soldering position and the solder barrier structure, the solder buffer directing solder movement away from the soldering position.

Further, the plate body is provided with a chamfer ring groove at a welding position so as to contain welding flux; the surface of the plate body between the solder blocking structure and the chamfer ring groove is a connecting ring surface, and the connecting ring surface forms a solder buffer zone.

Further, the width of the ring connecting the ring surface is 1-3.5 mm.

Optionally, the connecting ring surface is an inclined surface, the connection part of the inclined surface and the chamfer ring groove is a first edge, the connection edge of the inclined surface and the solder blocking structure is a second edge, and in the axial direction of the cover plate, the plane of the second edge is closer to the end surface of the solder blocking structure, which is far away from the plate body, than the plane of the first edge.

Optionally, the connecting ring surface is a concave curved surface, and a containing cavity is formed in the middle of the concave curved surface to contain solder.

Further, the cover plate is of an integral structure.

Further, a stop step is arranged in the assembly port, the end face of the plate body, which is away from the welding position, is matched with the bottom surface of the stop step in a stop mode, the end portion of the side wall of the assembly port is a necking section, the necking section is riveted with the plate body, and the inner surface of the necking section is welded with the plate body through welding materials.

Further, the valve body is internally provided with a first interface, a second interface and a first runner which are respectively communicated with the cavity; the movable component is used for controlling the connection or disconnection of the first interface and the second interface; a second runner is arranged at the connecting end of the second interface and the cavity; the solenoid valve also comprises a valve core component which is arranged on the valve body and used for controlling the communication or closing of the first flow passage and the second flow passage.

By applying the technical scheme of the utility model, the utility model provides an electromagnetic valve, which comprises the following components: the valve body is internally provided with a cavity, and the cavity is provided with an assembly port; the movable assembly is movably arranged in the cavity and used for controlling the electromagnetic valve to be opened or closed; the cover plate is arranged at the assembly opening and comprises a plate body and a solder blocking structure; the circumference of the plate body is provided with a welding position welded with the inner wall of the assembly port; the solder blocking structure is arranged in the middle of the plate body in a protruding mode, and the solder blocking structure stops the solder at the welding position from flowing in the direction deviating from the welding position so as to seal the assembly opening. According to the utility model, the solder blocking structure is arranged on the cover plate, and can effectively stop the solder on the welding position from flowing in the direction deviating from the welding position during welding, so that the solder is concentrated near the welding position, the problem that the solder at the welding position is not filled enough due to the flow of the solder in the opposite direction, the sufficient welding between the cover plate and the valve body is ensured, and the problems of leakage of a cavity and the like are avoided; meanwhile, the solder blocking structure also effectively prevents the solder flowing reversely from forming an irregular structure on the surface of the cover plate, and further improves the appearance of the electromagnetic valve.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a schematic view showing an internal structure of a solenoid valve according to an embodiment of the present utility model;

FIG. 2 is an enlarged view showing a part of the structure of a solenoid valve at a welding position according to a first embodiment of the present utility model;

FIG. 3 is a detailed cross-sectional view showing a cover plate according to a first embodiment of the present utility model;

FIG. 4 shows a left side view of a cover plate provided in accordance with a first embodiment of the present utility model;

fig. 5 is a specific structural cross-sectional view of a cover plate provided in the second embodiment of the present utility model;

FIG. 6 shows a left side view of a cover plate provided by a second embodiment of the utility model;

fig. 7 is an enlarged view showing a part of the structure of a solenoid valve provided in a third embodiment of the utility model at a welding position;

fig. 8 is an enlarged view showing a part of the structure of a solenoid valve provided in a fourth embodiment of the present utility model at a welding position.

Wherein the above figures include the following reference numerals:

10. a valve body; 11. a cavity; 111. an assembly port; 112. a stop step; 113. a necking section;

20. a movable assembly;

30. a cover plate; 31. a plate body; 311. a welding position; 312. chamfering ring grooves; 32. a solder barrier structure; 321. a post structure; 322. a through hole;

40. a solder buffer; 41. a connecting ring surface;

50. solder;

60. a first interface;

70. a second interface;

80. a first flow passage;

90. a second flow passage;

100. and a valve core assembly.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 8, an embodiment of the present utility model provides a solenoid valve including:

a valve body 10 having a cavity 11 therein, the cavity 11 having an assembly port 111;

a movable assembly 20 movably disposed in the cavity 11 for controlling the opening or closing of the solenoid valve;

a cover plate 30 provided at the fitting opening 111, the cover plate 30 including a plate body 31 and a solder blocking structure 32; the circumferential direction of the plate body 31 is provided with a welding position 311 welded with the inner wall of the assembly port 111; the solder blocking structure 32 is provided convexly at the middle of the plate body 31, and the solder blocking structure 32 stops the solder 50 of the soldering position 311 from flowing in a direction away from the soldering position 311 to seal the fitting opening 111.

According to the utility model, the solder blocking structure 32 is arranged on the cover plate 30, and the solder 50 on the welding position 311 can be effectively stopped from flowing in the direction deviating from the welding position 311 when the solder blocking structure 32 is welded, so that the solder 50 is concentrated near the welding position 311, the problem that the solder 50 is not fully filled in the welding seam due to the flow of the solder 50 in the opposite direction at the welding seam is avoided, the sufficient welding between the cover plate 30 and the valve body 10 is further ensured, and the problems of leakage and the like of the cavity 11 are avoided; at the same time, the solder blocking structure 32 also effectively prevents the reverse flow of solder 50 from forming irregularities on the surface of the cover plate 30, thereby improving the aesthetic appearance and consistency of the overall solenoid valve.

As shown in fig. 2, 3 and 4, in the first embodiment of the present utility model, the solder blocking structure 32 is a stud structure 321, one end of the stud structure 321 in the axial direction is fixedly disposed on the plate body 31, and the curved surface of the stud structure 321 in the circumferential direction stops the solder 50 flowing away from the soldering position 311. By providing the solder barrier structure 32 as the stud structure 321, not only is the solder barrier structure 32 ensured to be easily shaped, but also the reliable barrier of the stud structure 321 to the solder 50 flowing in the reverse direction in the circumferential direction is ensured.

As shown in fig. 2, the length a of the stud structure 321 in the axial direction ranges from 0.2 to 0.5mm. By the arrangement, the stop effect of the convex column structure 321 on the reversely flowing solder 50 is ensured to meet the actual requirement, and the convex column structure 321 is easy to process; in practical use, the stud structure 321 can be formed on the plate 31 through a conventional cutting process, which is simpler and more convenient.

Alternatively, as shown in fig. 5 and 6, in the second embodiment of the present utility model, a through hole 322 is formed in the middle of the post structure 321, the axis of the through hole 322 is collinear with the axis of the post structure 321, and the post structure 321 with the through hole 322 is a ring structure. By providing the through holes 322, the entire structure of the stud structure 321 is made lightweight.

As shown in fig. 2, the plate 31 also has a solder buffer 40 between the soldering site 311 and the solder barrier structure 32, the solder buffer 40 guiding the movement of solder 50 flowing away from the soldering site 311. By providing the solder buffer 40, efficient containment and routing of the counter-flowing solder 50 is achieved, thereby effectively improving the quality of the overall solder joint.

As shown in fig. 2 to 8, the plate body 31 is provided with a chamfer ring groove 312 at a soldering position 311 to accommodate the solder 50; the surface of the plate 31 between the solder barrier structure 32 and the chamfer ring groove 312 is a connecting ring surface 41, and the connecting ring surface 41 forms a solder buffer zone 40. By arranging the chamfer ring groove 312, the welding flux 50 is further limited and contained, so that the welding quality is improved, the sufficient welding between the cover plate 30 and the valve body 10 is ensured, and the problems of leakage and the like of the cavity 11 are avoided; by providing the connecting annulus 41, the aesthetic appearance and consistency of the overall solenoid valve appearance is further enhanced after solidification of the solder 50.

Specifically, the annular width of the connecting annulus 41 ranges from 1 to 3.5mm. This arrangement ensures both easy machining of the connecting ring surface 41 and the accommodating and guiding effect of the connecting ring surface 41 for the solder 50 flowing in the opposite direction.

Alternatively, as shown in fig. 7, in the third embodiment of the present utility model, the connection ring surface 41 is a bevel, the connection point between the bevel and the chamfer ring groove 312 is a first edge, the connection edge between the bevel and the solder blocking structure 32 is a second edge, and in the axial direction of the cover plate 30, the plane of the second edge is closer to the end surface of the solder blocking structure 32 away from the plate body 31 than the plane of the first edge (i.e. the bevel is inclined in a direction matching the spontaneous flow direction of the solder 50). By this arrangement, it is ensured that the solder 50 flowing in the reverse direction can smoothly flow along the inclined surface, and after solidification of the solder 50, the flatness of the appearance of the soldered position 311 is ensured to some extent.

Alternatively, as shown in fig. 8, in the fourth embodiment of the present utility model, the connection ring surface 41 is a concave curved surface, and a receiving cavity is formed in the middle of the concave curved surface to receive the solder 50. By providing the connecting annulus 41 as a concave curved surface, a large accommodation space for the solder 50 flowing in the reverse direction is structurally ensured, and after solidification of the solder 50, the flatness and the aesthetic appearance of the soldering position 311 are ensured to a certain extent.

Specifically, the cover plate 30 is of unitary construction. This arrangement facilitates the forming of the cover plate 30.

As shown in fig. 1, the assembly opening 111 is provided with a stop step 112, the end surface of the plate body 31 facing away from the welding position 311 is in stop fit with the bottom surface of the stop step 112, the end part of the side wall of the assembly opening 111 is provided with a necking section 113, the necking section 113 is riveted with the plate body 31, and the inner surface of the necking section 113 is welded with the plate body 31 through the welding flux 50. By providing the stopper step 112, reliable positioning of the plate body 31 is achieved; by arranging the necking section 113 to rivet with the plate 31, the mounting strength of the plate 31 on the valve body 10 is further improved, and the welding work of the subsequent plate 31 on the valve body 10 is more convenient.

As shown in fig. 1, the valve body 10 further has a first port 60, a second port 70 and a first flow passage 80 in communication with the cavity 11, respectively; the movable assembly 20 is used for controlling the communication or closing of the first interface 60 and the second interface 70; a second runner 90 is arranged at the connecting end of the second interface 70 and the cavity 11; the solenoid valve further includes a valve cartridge assembly 100, the valve cartridge assembly 100 being provided on the valve body 10 for controlling communication or closure of the first and second flow passages 80 and 90. The arrangement facilitates flexible opening and closing of the movable assembly 20 (e.g., by regulating the valve core assembly 100 to control communication between the first and second flow passages 80, 90, and balancing the pressure in the cavity 11 to facilitate opening and closing of the solenoid valve) under conditions of relatively large differential pressure (e.g., relatively large differential pressure between the first and second ports 60, 70).

In summary, the electromagnetic valve is provided by the utility model, the solder blocking structure 32 is arranged on the cover plate 30, and the solder blocking structure 32 can effectively stop the solder 50 on the welding position 311 from flowing in the direction deviating from the welding position 311 during welding, so that the solder 50 is concentrated near the welding position 311, the problem that the solder 50 is not fully filled in the welding seam due to the reverse flowing of the solder 50 which is filled in the welding seam is avoided, the sufficient welding between the cover plate 30 and the valve body 10 is further ensured, and the problems of leakage and the like of the cavity 11 are avoided; at the same time, the solder blocking structure 32 also effectively prevents the reverse flow of solder 50 from forming irregularities on the surface of the cover plate 30, thereby improving the aesthetic appearance and consistency of the overall solenoid valve.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (12)

1. A solenoid valve, comprising:

a valve body (10) having a cavity (11) therein, the cavity (11) having an assembly port (111);

a movable assembly (20) movably arranged in the cavity (11) and used for controlling the electromagnetic valve to be opened or closed;

a cover plate (30) provided at the fitting port (111), the cover plate (30) including a plate body (31) and a solder blocking structure (32); the circumference of the plate body (31) is provided with a welding position (311) welded with the inner wall of the assembly opening (111); the solder blocking structure (32) is convexly arranged in the middle of the plate body (31), and the solder blocking structure (32) stops the solder (50) at the welding position (311) from flowing in the direction away from the welding position (311) so as to seal the assembly opening (111).

2. The electromagnetic valve according to claim 1, characterized in that the solder blocking structure (32) is a stud structure (321), one end of the stud structure (321) in the axial direction is fixedly arranged on the plate body (31), and a curved surface of the stud structure (321) in the circumferential direction stops solder (50) flowing away from the welding position (311).

3. A solenoid valve according to claim 2, characterised in that the length a of said stud formation (321) in the axial direction ranges from 0.2 to 0.5mm.

4. The electromagnetic valve according to claim 2, characterized in that a through hole (322) is provided in the middle of the stud structure (321), the axis of the through hole (322) is collinear with the axis of the stud structure (321), and the stud structure (321) provided with the through hole (322) is a ring-shaped structure.

5. Solenoid valve according to claim 1, characterized in that between the soldering position (311) and the solder barrier structure (32), the plate body (31) also has a solder buffer zone (40), which solder buffer zone (40) directs the movement of solder (50) flowing away from the soldering position (311).

6. The solenoid valve according to claim 5, characterized in that said plate (31) is provided with a chamfer groove (312) at said welding position (311) to accommodate said solder (50); the surface of the plate body (31) between the solder blocking structure (32) and the chamfer ring groove (312) is a connecting ring surface (41), and the connecting ring surface (41) forms the solder buffer zone (40).

7. A solenoid valve according to claim 6 characterised in that said connecting annulus (41) has a circular width ranging from 1 to 3.5mm.

8. The electromagnetic valve according to claim 6, characterized in that the connection ring surface (41) is a slope, a connection point of the slope and the chamfer ring groove (312) is a first side, a connection side of the slope and the solder blocking structure (32) is a second side, and a plane of the second side is closer to an end face of the solder blocking structure (32) away from the plate body (31) than a plane of the first side in an axial direction of the cover plate (30).

9. The solenoid valve according to claim 6, characterized in that said connecting toroidal surface (41) is a concave curved surface, the middle of which forms a containing cavity to contain said solder (50).

10. The solenoid valve according to claim 1, characterized in that said cover plate (30) is of unitary construction.

11. The electromagnetic valve according to claim 1, characterized in that a stop step (112) is arranged in the assembly opening (111), the end face of the plate body (31) facing away from the welding position (311) is in stop fit with the bottom surface of the stop step (112), the side wall end of the assembly opening (111) is provided with a necking section (113), the necking section (113) is riveted with the plate body (31), and the inner surface of the necking section (113) is welded with the plate body (31) through the welding flux (50).

12. The solenoid valve according to claim 1, characterized in that the interior of the valve body (10) also has a first port (60), a second port (70) and a first flow channel (80) communicating respectively with the cavity (11); the movable assembly (20) is used for controlling the communication or closing of the first interface (60) and the second interface (70); a second runner (90) is arranged at the connecting end of the second interface (70) and the cavity (11); the electromagnetic valve further comprises a valve core assembly (100), wherein the valve core assembly (100) is arranged on the valve body (10) and is used for controlling the communication or closing of the first flow passage (80) and the second flow passage (90).