CN218582300U - Reversible solenoid valve and refrigerating system thereof - Google Patents

Abstract

The utility model relates to a refrigeration technology field especially relates to reversible solenoid valve and refrigerating system thereof. A reversible electromagnetic valve comprises a valve body and a valve core assembly, wherein the valve body is provided with a valve cavity, and a first communicating hole and a second communicating hole which are communicated with the valve cavity are formed in the valve body; the valve core assembly is positioned in the valve cavity and comprises a sliding block part, and the sliding block part is arranged close to one end of the first communicating hole and one end of the second communicating hole and can block the first communicating hole and the second communicating hole; the slider component comprises a first slider and a second slider, the first slider is arranged close to the first communicating hole, the second slider is arranged close to the second communicating hole, and the shapes and the sizes of the first slider and the second slider are respectively the same. The utility model has the advantages of, two the same sliders can reduce part kind quantity, reduce the mould development, practice thrift the cost.

Description

Reversible electromagnetic valve and refrigerating system thereof

Technical Field

The utility model relates to a refrigeration technology field especially relates to reversible solenoid valve and refrigerating system thereof.

Background

In a refrigeration system, a solenoid valve is usually provided to communicate or cut off a pipeline of the refrigeration system, and the solenoid valve includes a valve core assembly and a valve body, and the solenoid valve is opened and closed by moving the valve core assembly inside the valve body.

The existing electromagnetic valve is characterized in that a sliding block component is formed by sleeving two sliding blocks with different sizes, the two sliding blocks mutually play a limiting role outside the smaller sliding block, the types of parts are more, the development of a die is complex, and the production cost is increased.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model provides a reversible solenoid valve to above-mentioned technical problem, technical scheme as follows:

a reversible electromagnetic valve comprises a valve body and a valve core assembly, wherein the valve body is provided with a valve cavity, and a first communicating hole and a second communicating hole which are communicated with the valve cavity are formed in the valve body; the valve core assembly is positioned in the valve cavity and comprises a sliding block component, and the sliding block component is arranged close to one end of the first communication hole and one end of the second communication hole and can block the first communication hole and the second communication hole;

the slider component comprises a first slider and a second slider, the first slider is arranged close to the first communicating hole, the second slider is arranged close to the second communicating hole, and the shapes and the sizes of the first slider and the second slider are respectively the same.

So set up, can simplify the structure, make the structure more reliable and stable, reduce the kind number of part simultaneously, reduce mould development, reduced the cost greatly.

In one embodiment, a first end cover is arranged at one end of the valve body close to the first communicating hole and the second communicating hole, a second end cover is arranged in the valve cavity, the first end cover and the second end cover form a first valve cavity, a second gap is formed between the first sliding block and the second sliding block, an accommodating cavity is formed between the first sliding block and the second sliding block, and the first valve cavity is communicated with the accommodating cavity through the second gap.

According to the arrangement, the two sliding blocks are matched to form the second gap which is communicated with the first valve cavity, an extra communicating channel is not required to be additionally arranged, and the structure of the device is simplified. The containing cavity is communicated with the first valve cavity through the first gap, so that the pressure between the inside of the containing cavity and the first valve cavity can be balanced, and the first sliding block and the second sliding block are protected from being extruded by a medium in the first valve cavity.

In one embodiment, an elastic member is disposed in the accommodating cavity, one end of the elastic member abuts against the first slider, the other end of the elastic member abuts against the second slider, and the first slider and the second slider are spaced apart from each other under the action of the elastic member to form the second gap.

So set up, get into from first intercommunicating pore or second intercommunicating pore when high pressure medium, when leading to first slider or second slider pressure, the elastic component between first slider and the second slider can play the cushioning effect to reduce the part loss, extension fixture life, and the elastic component can make the terminal surface of first intercommunicating pore and second intercommunicating pore of laminating more of first slider and second slider, strengthen the leakproofness. The first sliding block and the second sliding block are matched to form a second gap, so that a balance gap is prevented from being additionally formed on the first sliding block or the second sliding block, the structure is simplified, and the manufacturing cost is reduced.

In one embodiment, the valve core assembly further includes a guide frame, the guide frame is sleeved outside the slider part, the slider part and the guide frame are arranged at an interval to form a first gap communicated with the second gap, and the first gap is respectively communicated with the first valve cavity and the second valve cavity.

So set up, first clearance can form the pressure balance passageway with first valve pocket and second valve chamber intercommunication with second clearance fit, and the leading truck is spacing to first slider and second slider simultaneously to prevent that first slider and second slider from taking place to incline under the impact of medium.

In one embodiment, each of the first slider and the second slider includes a first portion and a second portion connected to each other, the first portion of the first slider is capable of sealing the first communication hole, the first portion of the second slider is capable of sealing the second communication hole, the second portion is annular, and the second portion of the first slider and the second portion of the second slider are disposed opposite to each other to form the accommodation chamber.

In one embodiment, the outer diameter of the first part is larger than that of the second part, and the guide frame is sleeved outside the second part and is arranged at a distance from the second part; the accommodating cavity is internally provided with an elastic piece, and the first part and the guide frame are arranged at intervals under the action of the elastic piece.

Due to the arrangement, the cavity body of the accommodating cavity is larger in volume, and the miniaturization design is facilitated; meanwhile, through the action of the elastic piece, a gap is generated between the first part and the guide frame, so that the first gap can be communicated with the first valve cavity.

In one embodiment, the valve body far away from the first end cover further comprises a third end cover, one end of the valve core assembly is arranged between the first end cover and the second end cover, and the other end of the valve core assembly penetrates through the second end cover and extends into the space between the second end cover and the third end cover.

In one embodiment, the valve core assembly further includes a connecting rod and a piston, the guide frame and the piston are respectively disposed at two ends of the connecting rod, the second end cover and the piston are matched to form a third valve cavity, and the piston and the third end cover are matched to form a fourth valve cavity.

So set up for when the piston removed, slider part, leading truck, connecting rod and piston were because the velocity removal is with in the relation of connection, guaranteed the motion efficiency of case subassembly.

In one embodiment, the reversible electromagnetic valve further includes a pilot valve, the valve cavity includes a third valve cavity and a fourth valve cavity, the valve body is provided with a third communicating hole and a fourth communicating hole, the third communicating hole is communicated with the third valve cavity, the fourth communicating hole is communicated with the fourth valve cavity, the pilot valve is respectively communicated with the third communicating hole and the fourth communicating hole through a capillary, and a pressure difference between the third valve cavity and the fourth valve cavity is controlled by the pilot valve.

According to the arrangement, the sealing performance of the third valve cavity and the fourth valve cavity is guaranteed, and the pressure difference between the third valve cavity and the fourth valve cavity is changed through the pilot valve so as to drive the valve core assembly to move.

The utility model discloses still provide following technical scheme:

a refrigerating system comprises the reversible solenoid valve.

Compared with the prior art, the utility model provides a reversible solenoid valve through setting up two shapes and the same first slider of size and second slider, has avoided one big one little two slider covers to establish, can increase slider part inner space, convenient miniaturized design to reduce part kind quantity, reduce mould development.

Drawings

Fig. 1 is a first position cross-sectional view of a reversible solenoid valve according to an embodiment of the present invention;

fig. 2 is a sectional view of a part of a valve core assembly of the reversible solenoid valve according to the embodiment of the present invention;

fig. 3 is a front view of a part of the valve core assembly of the reversible electromagnetic valve provided by the present invention;

fig. 4 is a partial top view of the valve core assembly of the reversible solenoid valve according to the embodiment of the present invention;

fig. 5 is a perspective view of a part of a valve core assembly of the reversible solenoid valve according to the embodiment of the present invention;

fig. 6 is a cross-sectional view of a first slider of the reversible solenoid valve according to the present invention;

fig. 7 is a top view of a first slider of the reversible solenoid valve according to the present invention;

fig. 8 is a perspective view of a first slider of the reversible solenoid valve according to the present invention;

the symbols in the drawings represent the following meanings:

100. a reversible solenoid valve; 10. a valve body; 11. a first communication hole; 12. a second communication hole; 13. a third communication hole; 14. a fourth communication hole; 15. a valve cavity; 151. a first valve chamber; 153. a third valve cavity; 154. a fourth valve cavity; 16. a valve seat; 20. an end cap; 21. a first end cap; 22. a second end cap; 23. a third end cap; 30. a valve core assembly; 31. a slider member; 311. an elastic member; 312. a first slider; 3121. a first part; 3122. a second section; 313. a second slider; 314. an accommodating cavity; 315. a first gap; 316. a second gap; 32. a guide frame; 33. a connecting rod; 34. and a piston.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, 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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 8, the reversible solenoid valve 100 is applied to a refrigeration system for realizing bidirectional circulation of a medium.

The reversible solenoid valve 100 comprises a valve body 10 and a valve core assembly 30, wherein the valve core assembly 30 is arranged inside the valve body 10 and is abutted against the inner wall of the valve body 10, and a valve cavity 15 is arranged in the valve body 10 and can axially move inside the valve cavity 15 to open and close the reversible solenoid valve 100.

Specifically, a first communication hole 11 and a second communication hole 12 are formed in the valve body 10, one end of the first communication hole 11 and the second communication hole 12, which are led into the valve body 10, are connected with the valve chamber 15, and the other end of the first communication hole 11 and the second communication hole are used as an inlet and an outlet of a medium, so that a passage for the medium to pass through is formed.

The second end cover 22 is arranged in the valve cavity 15, the valve core assembly 30 is arranged through the second end cover 22, a part of the valve core assembly 30 is located on one side of the second end cover 22 close to the first through hole 11, and a part of the valve core assembly is located on one side of the second end cover 22 far away from the first through hole 11.

The two ends of the valve body 10 are also respectively provided with a first end cover 21 and a third end cover 23 for sealing the valve body 10. A first end cover 21 is provided at an end of the valve body 10 close to the first communication hole 11 and the second communication hole 12, and a third end cover 23 is provided at an end of the valve body 10 far from the first communication hole 11.

Specifically, the valve chamber 15 includes a first valve chamber 151 and a third valve chamber 153, the first valve chamber 151 is formed by the first end cover 21 and the second end cover 22, the third valve chamber 153 is formed by the second end cover 22 and the valve core assembly 30 on the side close to the third end cover 23, and the fourth valve chamber 154 is formed by the valve core assembly 30 and the third end cover 23.

The inner wall of the valve body 10 is also provided with a valve seat 16, and the valve seat 16 is connected with the inner wall of the valve body 10 in a sealing way.

The valve core assembly 30 is located inside the valve body 10 and includes a sliding block part 31, a connecting rod 33 and a piston 34, and two ends of the connecting rod 33 are respectively connected to the piston 34 and the sliding block part 31. The slider member 31 is located in the first valve chamber 151 and in the valve seat 16, and when the reversible solenoid valve 100 is in the first position, the slider member 31 is located between the first communication hole 11 and the second communication hole 12, and the medium flow between the first communication hole 11 and the second communication hole 12 can be blocked. The piston 34 is located on the side of the second end cap 22 remote from the slider member 31, and the piston 34 seals the fourth valve chamber 154 from the third valve chamber 153. It should be explained that the first position herein refers to the state that the reversible solenoid valve 100 is closed, and the second position hereinafter refers to the state that the reversible solenoid valve 100 is opened.

Referring to fig. 2, specifically, the slider member 31 includes a first slider 312 and a second slider 313, the first slider 312 is disposed near the first communicating hole 11, the second slider 313 is disposed near the second communicating hole 12, and the first slider 312 and the second slider 313 are respectively identical in shape and size, which reduces the number of kinds of parts, thereby reducing the development of molds and reducing the production cost.

Further, the first slider 312 and the second slider 313 are identical in shape, which means that they are identical in structure.

Further, the first slider 312 and the second slider 313 are the same in size, which means that the width, height, diameter, and the like of the two sliders are respectively the same.

A second gap 316 is formed between the first slider 312 and the second slider 313, a receiving cavity 314 is formed between the first slider 312 and the second slider 313, and the first valve cavity 151 is communicated with the receiving cavity 314 through the second gap 316, so that the pressure between the receiving cavity 314 and the first valve cavity 151 is balanced.

It can be understood that the medium in the first valve cavity 151 presses the first slider 312 and the second slider 313, which causes the first slider 312 and the second slider 313 to deform; meanwhile, the volume of the accommodating chamber 314 is reduced and the pressure is increased by the impact of the medium in the first and second communication holes 11 and 12. At this time, the medium in the accommodation chamber 314 can flow out through the second gap 316.

Specifically, each of the first slider 312 and the second slider 313 includes a first portion 3121 and a second portion 3122, the first portion 3121 of the first slider 312 can close the first communication hole 11, the first portion 3121 of the second slider 313 can close the second communication hole 12, the second portion 3122 is annular, and the second portion 3122 of the first slider 312 and the second portion 3122 of the second slider 313 are disposed opposite to each other, thereby forming the receiving cavity 314.

Specifically, the elastic element 311 is disposed in the accommodating cavity 314, and two ends of the elastic element 311 respectively abut against the first portion 3121 of the first slider 312 and the first portion 3121 of the second slider 313. The elastic member 311 causes the first portion 3121 and the second portion 3122 to respectively abut against the end surface of the first communication hole 11 and the end surface of the second communication hole 12, so as to enhance sealing performance of the sealing, and the elastic member 311 supports the first slider 312 and the second slider 313.

The valve core assembly 30 further comprises a guide frame 32, and the guide frame 32 is arranged on the outer side of the slider part 31 and connected with the connecting rod 33. The outer diameter of the first portion 3121 is greater than the outer diameter of the second portion 3122, that is, the guide frame 32 is sleeved on the outer circumferential side of the second portion 3122, so that the slider member 31 can be limited, the first slider 312 and the second slider 313 can be prevented from being inclined under the impact of a medium, and the volume of the slider member 31 can be reduced.

The slider member 31 is spaced apart from the guide frame 32 to form first gaps 315 communicating with the second gaps 316, and the first gaps 315 communicate with the first valve chambers 151, respectively, thereby ensuring pressure balance between the accommodation chamber 314 and the first valve chambers 151.

The guide frame 32 and the first portion 3121 are spaced apart from each other by the elastic force of the elastic member 311, and no additional component is required, so that the structure is simple.

The reversible electromagnetic valve 100 further includes a pilot valve (not shown), the valve body 10 is further provided with a third communicating hole 13 and a fourth communicating hole 14, one end of the third communicating hole 13, which is connected to the third valve chamber 153, that is connected to the pilot valve, the other end of the fourth communicating hole 14, which is connected to the fourth valve chamber 154, that is connected to the fourth valve chamber 10, and the other end of the fourth communicating hole is also connected to the pilot valve, and the pilot valve can move the piston 34 by controlling a pressure difference between the third valve chamber 153 and the fourth valve chamber 154.

Specifically, when the third communicating hole 13 and the fourth communicating hole 14 form a pressure difference in the third valve chamber 153 and the fourth valve chamber 154, and the piston 34 is pushed to move, the piston 34 will drive the connecting rod 33 to move in the same direction and at the same speed, so as to drive the slider member 31 to move laterally, thereby achieving the function of the slider member 31 of isolating the medium flowing between the first communicating hole 11 and the second communicating hole 12.

The utility model also provides a refrigerating system, including above-mentioned reversible solenoid valve 100.

In an embodiment, when cooling is required, the pilot valve passes high pressure medium from the third communication hole 13 into the third valve chamber 153, which raises the pressure inside the third valve chamber 153, and the fourth valve chamber 154 is connected to the low pressure outlet of the pilot valve, which is at a lower pressure. At this time, a pressure difference is formed between the third valve chamber 153 and the fourth valve chamber 154, and the piston 34 is pushed by the pressure difference to move to the second position, and the piston 34 drives the slider member 31 to move toward the third end cover 23 through the connecting rod 33, so that the first valve chamber 151 between the first communication hole 11 and the second communication hole 12 is opened, and the medium can flow between the first communication hole 11 and the second communication hole 12.

In addition, the elastic member 311 is disposed inside the slider member 31, and when the high-pressure medium enters from the first communication hole 11 and presses the first slider 312, the elastic member 311 in the accommodating cavity 314 can play a role of buffering. Moreover, the second gap 316 formed between the first slider 312 and the second slider 313 and the first gap 315 formed by the guide frame 32 in cooperation with the second portion 3122 of the first slider 312 and the second portion 3122 of the second slider 313 can communicate the accommodation chamber 314 and the first valve chamber 151, thereby balancing the pressure in the accommodation chamber 314 without separately providing a balancing hole on the slider member 31, making the structure of the slider member 31 simpler. The first sliding block 312 and the second sliding block 313 are identical in shape and size, and the situation that two sliding blocks, namely a large sliding block and a small sliding block, are sleeved is avoided, so that the internal space of the sliding blocks is increased, the miniaturization design is facilitated, the number of types of parts is reduced, and the development of a mold is reduced.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A reversible electromagnetic valve comprises a valve body (10) and a valve core assembly (30), wherein the valve body (10) is provided with a valve cavity (15), and the valve body (10) is provided with a first communicating hole (11) and a second communicating hole (12) which are communicated with the valve cavity (15); the valve core assembly (30) is positioned in the valve cavity (15), the valve core assembly (30) comprises a slider component (31), and the slider component (31) is arranged close to the first communicating hole (11) and the second communicating hole (12) and can block the first communicating hole (11) and the second communicating hole (12);

characterized in that the slider member (31) includes a first slider (312) and a second slider (313), the first slider (312) is disposed near the first communicating hole (11), the second slider (313) is disposed near the second communicating hole (12), and the first slider (312) and the second slider (313) are respectively the same in shape and size.

2. The reversible electromagnetic valve according to claim 1, wherein a first end cap (21) is disposed at one end of the valve body (10) close to the first communicating hole (11) and the second communicating hole (12), a second end cap (22) is disposed in the valve chamber (15), the first end cap (21) and the second end cap (22) form a first valve chamber (151), a second gap (316) is disposed between the first slider (312) and the second slider (313), a receiving chamber (314) is disposed between the first slider (312) and the second slider (313), and the first valve chamber (151) and the receiving chamber (314) are communicated through the second gap (316).

3. The reversible solenoid valve according to claim 2, wherein an elastic member (311) is arranged in the accommodating cavity (314), one end of the elastic member (311) abuts against the first slider (312), the other end abuts against the second slider (313), and the first slider (312) and the second slider (313) are arranged at intervals under the action of the elastic member (311) to form the second gap (316).

4. The reversible solenoid valve according to claim 2, wherein the spool assembly (30) further comprises a guide frame (32), the guide frame (32) is sleeved outside the slider member (31), the slider member (31) and the guide frame (32) are arranged at a distance to form a first gap (315) communicating with the second gap (316), and the first gap (315) communicates with the first valve chamber (151).

5. The reversible solenoid valve according to claim 4, characterized in that the first slider (312) and the second slider (313) each comprise a first portion (3121) and a second portion (3122) connected to each other, the first portion (3121) of the first slider (312) being able to close the first communication hole (11), the first portion (3121) of the second slider (313) being able to close the second communication hole (12), the second portion (3122) being annular, the second portion (3122) of the first slider (312) being arranged opposite the second portion (3122) of the second slider (313) so as to form the housing chamber (314).

6. The reversible solenoid valve according to claim 5, characterized in that the first portion (3121) has an outer diameter larger than that of the second portion (3122), and the guide frame (32) is sleeved outside the second portion (3122) and is provided spaced apart from the second portion (3122); an elastic piece (311) is arranged in the accommodating cavity (314), and under the action of the elastic piece (311), the first portion (3121) and the guide frame (32) are arranged at intervals.

7. The reversible solenoid valve according to claim 4, characterized in that the valve body (10) further comprises a third end cap (23) far away from the first end cap (21), one end of the valve core assembly (30) is arranged between the first end cap (21) and the second end cap (22), and the other end is arranged through the second end cap (22) and extends into between the second end cap (22) and the third end cap (23).

8. The reversible solenoid valve according to claim 7, wherein the spool assembly (30) further comprises a connecting rod (33) and a piston (34), the guide frame (32) and the piston (34) are respectively disposed at two ends of the connecting rod (33), the second end cap (22) and the piston (34) cooperate to form a third valve chamber (153), and the piston (34) cooperates with the third end cap (23) to form a fourth valve chamber (154).

9. The reversible electromagnetic valve according to claim 1, further comprising a pilot valve, wherein the valve chamber (15) comprises a third valve chamber (153) and a fourth valve chamber (154), the valve body (10) is provided with a third communicating hole (13) and a fourth communicating hole (14), the third communicating hole (13) is communicated with the third valve chamber (153), the fourth communicating hole (14) is communicated with the fourth valve chamber (154), the pilot valve is respectively communicated with the third communicating hole (13) and the fourth communicating hole (14) through a capillary tube, and a pressure difference between the third valve chamber (153) and the fourth valve chamber (154) is controlled by the pilot valve.

10. A refrigeration system comprising a reversible solenoid valve according to any one of claims 1 to 9.

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