CN218913796U - Reversible electromagnetic valve and air conditioning unit with same - Google Patents

Abstract

The utility model relates to the technical field of refrigeration, in particular to a reversible electromagnetic valve and an air conditioning unit with the same. The reversible electromagnetic valve comprises a valve body assembly and a valve core assembly, wherein a first communication port and a second communication port are respectively formed in two sides of the valve body assembly, the valve body assembly is provided with a valve cavity, the valve core assembly is arranged in the valve cavity, and the valve core assembly can slide in the valve cavity so as to enable the first communication port and the second communication port to be communicated or blocked; the valve body assembly comprises a valve body and a valve seat, the valve body and the valve seat are integrally formed, the first communication port and the second communication port penetrate through the valve body and the valve seat, one end of the valve core assembly stretches into the valve seat and can slide to be mutually abutted with the first communication port and the second communication port so as to separate the first communication port and the second communication port. The utility model has the advantages that: the parallelism of the valve seat is improved, the risk of internal leakage between the valve seat and the valve body is reduced, and the situation that the valve core assembly is blocked with the valve seat is avoided.

Description

Reversible electromagnetic valve and air conditioning unit with same

Technical Field

The utility model relates to the technical field of refrigeration, in particular to a reversible electromagnetic valve and an air conditioning unit with the same.

Background

The reversible electromagnetic valve is arranged in the air conditioning unit and used for controlling the communication or the separation of the pipelines, thereby realizing the bidirectional circulation of the refrigerant.

The current reversible solenoid valve includes valve body and disk seat, and disk seat and valve body pass through welded connection, lead to the disk seat to appear two terminal surface nonparallel circumstances, when the case subassembly butt in the terminal surface of disk seat, can produce interior hourglass between case subassembly and the disk seat, and can appear the dead condition of card between case subassembly and the disk seat, reduction in service life.

Disclosure of Invention

Based on the above, the utility model provides a reversible electromagnetic valve, which aims at the technical problems, and the technical scheme is as follows:

the reversible electromagnetic valve comprises a valve body assembly and a valve core assembly, wherein a first communication port and a second communication port are respectively formed in two sides of the valve body assembly, the valve body assembly is provided with a valve cavity, the valve core assembly is arranged in the valve cavity, and the valve core assembly can slide in the valve cavity so as to enable the first communication port and the second communication port to be communicated or separated; the valve body assembly comprises a valve body and a valve seat, the first communication port and the second communication port penetrate through the valve body and the valve seat, one end of the valve core assembly stretches into the valve seat and can slide to be mutually abutted with the first communication port and the second communication port so as to isolate the first communication port and the second communication port; the valve body and the valve seat are integrally formed.

In the application, the valve body and the valve seat are integrally formed, so that the situation that the existing valve seat is welded on the valve body to cause non-parallel conditions between the end faces of the valve seat can be avoided, the parallelism of the valve seat is improved, the risk of internal leakage between the valve seat and the valve body is reduced, the situation that a valve core assembly is blocked with the valve seat can be avoided, and the service life of the reversible electromagnetic valve is prolonged; meanwhile, the valve body and the valve seat are integrally formed, so that the welding procedure of the valve seat and the valve body can be reduced, and the cost is saved.

In one embodiment, the valve seat comprises a first portion and a second portion, the first portion and the second portion are attached to form a hollow cylindrical structure, the first communication port is formed in the first portion, the second communication port is formed in the second portion, and the first portion and the second portion are integrally formed.

So set up, with first portion and second portion integrated into one piece setting, can further guarantee the depth of parallelism of disk seat, avoid appearing the dead condition of card between case subassembly and the disk seat, improve reversible solenoid valve's life.

In one embodiment, the valve seat is further provided with a receiving groove at one end far away from the first communication port, and one end of the valve core assembly is located in the receiving groove and can slide in the receiving groove.

In one embodiment, the valve seat is further provided with a communication hole, the first communication port and the second communication port are respectively communicated with the communication hole, the communication hole is communicated with the accommodating groove, the inner diameter of the accommodating groove is larger than that of the communication hole, and one end of the valve core assembly can slide in the communication hole to communicate or cut off the first communication port and the second communication port.

The communication hole has a guiding function and can guide the movement of the valve core assembly; meanwhile, the circulation of the refrigerant is facilitated, when the valve core assembly slides in the direction away from the first communication port and the second communication port, the first communication port and the second communication port can be communicated through the communication hole, and the refrigerant can realize bidirectional circulation; meanwhile, the inner diameter of the accommodating groove is larger than that of the communicating hole, so that processing materials can be saved, and the cost is reduced.

In one embodiment, the reversible electromagnetic valve further comprises a sleeve and an intermediate end cover, wherein the sleeve is connected with one end, far away from the first communication port, of the valve seat, the intermediate end cover is installed in the valve cavity, the intermediate end cover is connected with one end, far away from the first communication port, of the valve seat, and/or the intermediate end cover is connected with the sleeve.

So set up, the setting of middle end cover can reduce the risk of refrigerant hourglass, and can separate the valve pocket and form different cavities.

In one embodiment, a first mounting groove is formed in one end, far away from the first communication port, of the valve seat, a first step is formed between the inner wall of the first mounting groove and the inner wall of the accommodating groove, the sleeve is connected with one end, provided with the first mounting groove, of the valve seat, the middle end cover is partially mounted in the first mounting groove and is abutted to the first step, and the valve core assembly penetrates through the middle end cover.

The arrangement of the first mounting groove is convenient for the installation of the middle end cover, and meanwhile, the arrangement of the middle end cover can reduce the risk of leakage of the refrigerant, and the valve cavity can be separated to form different cavities; and, the first step can increase the firmness of the middle end cap installation.

In one embodiment, the middle end cover is connected with one end of the valve seat away from the first communication port, the peripheral wall of the sleeve is provided with a through groove, the middle end cover is convexly provided with a welding part, and the welding part is installed in the through groove and connected with the inner wall of the through groove.

So set up, be convenient for disk seat, middle end cover and sheathed tube zonulae occludens.

In one embodiment, the middle end cover is located in the sleeve, a trough is formed in the outer peripheral wall of the middle end cover, and the trough is used for placing solder so that the middle end cover is connected with the inner wall of the sleeve.

So set up, the intermediate cap of being convenient for is connected with the inseparable of sleeve pipe.

In one embodiment, the reversible electromagnetic valve further comprises a first end cover and a second end cover, the end, close to the first communication port, of the valve seat is further provided with a second installation groove, the second installation groove is communicated with one end, far away from the accommodating groove, of the communication hole, a second step is formed between the inner wall of the second installation groove and the inner wall of the communication hole, the first end cover is installed in the second installation groove and is abutted to the second step, and the second end cover is installed at one end, far away from the valve seat, of the sleeve.

So set up, the second mounting groove is convenient for install first end cover.

The utility model also provides the following technical scheme:

an air conditioning unit comprises the reversible electromagnetic valve.

Compared with the prior art, the valve body and the valve seat are integrally formed, so that the situation that the end faces of the valve seat are unparallel due to the fact that the valve seat is welded on the valve body in the prior art can be avoided, the parallelism of the valve seat is improved, the risk of internal leakage between the valve seat and the valve body is reduced, the situation that a valve core assembly is blocked with the valve seat can be avoided, and the service life of the reversible electromagnetic valve is prolonged; meanwhile, the valve body and the valve seat are integrally formed, so that the welding procedure of the valve seat and the valve body can be reduced, and the cost is saved.

Drawings

Fig. 1 is a schematic cross-sectional view of a part of the structure of a conventional reversible solenoid valve.

Fig. 2 is a schematic cross-sectional view of a reversible solenoid valve according to a first embodiment of the present utility model.

Fig. 3 is a schematic view of an integrally formed valve seat and valve body.

FIG. 4 is a schematic cross-sectional view of an integrated valve seat and valve body.

Fig. 5 is a schematic partial cross-sectional view of a reversible solenoid valve according to a second embodiment of the present utility model.

Fig. 6 is a schematic partial cross-sectional view of a reversible solenoid valve according to a third embodiment of the utility model.

In the figure, 100, a reversible electromagnetic valve; 10. a valve body assembly; 11. a first communication port; 111. a first connection pipe; 12. a second communication port; 121. a second connection pipe; 13. a valve cavity; 131. a first chamber; 132. a second chamber; 133. a third chamber; 14. a valve body; 15. a valve seat; 151. a first section; 152. a second section; 153. a receiving groove; 154. a communication hole; 155. a first mounting groove; 156. a first step; 157. a second mounting groove; 158. a second step; 20. a sleeve; 21. a first hole; 211. a first capillary; 22. a second hole; 221. a second capillary; 23. a through groove; 30. a middle end cover; 31. a first end cap; 32. a second end cap; 33. a welding part; 34. a material placing groove; 40. a valve core assembly; 41. a piston unit; 411. a first piston bowl; 412. a second piston bowl; 413. an intermediate baffle; 414. a first baffle; 415. a second baffle; 42. a slider unit; 421. a first slider; 422. a second slider; 43. a link unit; 431. a guide frame; 4311. a mounting hole; 432. a connecting rod; 50. a pilot valve; 51. a small valve body; 511. an iron core; 512. a return spring; 513. a dragging frame; 514. a sliding bowl; 52. a low pressure connection tube; 53. a high pressure connection pipe; 54. an electromagnetic coil.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.

It is noted that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements 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 utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 2, the present application provides a reversible electromagnetic valve 100, which is installed in an air conditioning unit and is used for controlling the communication or the separation of pipelines, thereby realizing the bidirectional circulation of refrigerant.

Referring to fig. 1, the conventional reversible electromagnetic valve 101 includes a valve body 1011 and a valve seat 1012, wherein the valve seat 1012 is connected with the valve body 1011 by welding, so that two end surfaces of the valve seat 1012 are not parallel, when the valve core assembly 1013 is abutted against the end surface of the valve seat 1012, an internal leakage is generated between the valve core assembly 1013 and the valve seat 1012, and a clamping condition is generated between the valve core assembly 1013 and the valve seat 1012, thereby reducing the service life of the reversible electromagnetic valve 101.

With continued reference to fig. 2, the reversible electromagnetic valve 100 provided in the present application includes a valve body assembly 10 and a valve core assembly 40, wherein a first communication port 11 and a second communication port 12 are respectively provided at two sides of the valve body assembly 10, the valve body assembly 10 has a valve cavity 13, the valve core assembly 40 is disposed in the valve cavity 13, and the valve core assembly 40 can slide in the valve cavity 13 to enable the first communication port 11 and the second communication port 12 to be communicated or blocked.

Further, a first connecting pipe 111 is arranged in the first communicating port 11, a second connecting pipe 121 is arranged in the second communicating port 12, and the first connecting pipe 111 and the second connecting pipe 121 are respectively connected with pipelines of an air conditioning unit.

Referring to fig. 2 and 3, the valve body assembly 10 includes a valve body 14 and a valve seat 15, the valve body 14 and the valve seat 15 are integrally formed, the first communication port 11 and the second communication port 12 penetrate through the valve body 14 and the valve seat 15, and one end of the valve core assembly 40 extends into the valve seat 15 and can slide to abut against the first communication port 11 and the second communication port 12 to isolate the first communication port 11 and the second communication port 12; the valve body 14 and the valve seat 15 are integrally formed, so that the situation that the end faces of the valve seat 15 are not parallel due to the fact that the valve seat 15 is welded on the valve body 14 in the prior art can be avoided, the parallelism of the valve seat 15 can be improved, the risk of internal leakage between the valve seat 15 and the valve body 14 is reduced, the situation that the valve core assembly 40 and the valve seat 15 are blocked can be avoided, and the service life of the reversible electromagnetic valve 100 is prolonged; meanwhile, the valve body 14 and the valve seat 15 are integrally formed, so that the welding process of the valve seat 15 and the valve body 14 can be reduced, and the cost is saved.

Further, the valve seat 15 includes a first portion 151 and a second portion 152, the first portion 151 and the second portion 152 are adhered to form a hollow cylindrical structure, the first communication port 11 is opened on the first portion 151, the second communication port 12 is opened on the second portion 152, and the first portion 151 and the second portion 152 are integrally formed; the parallelism of the valve seat 15 can be further guaranteed by integrally forming the first portion 151 and the second portion 152, two valve seats 1012 are oppositely arranged in the existing reversible electromagnetic valve 101, the two valve seats 1012 are welded with the valve body 1011 respectively, the end faces of the two valve seats 1012 are easily unparallel, when the valve core assembly 1013 is plugged, the condition of internal leakage is generated, the valve seat 15 is integrally formed, the valve core assembly 40 and the valve seat 15 can be prevented from being internally leaked and blocked, and the service life of the reversible electromagnetic valve 100 is prolonged.

Preferably, in the present application, the axis of the first communication port 11 coincides with the axis of the second communication port 12, so as to ensure a faster and smoother circulation of the medium and facilitate processing.

In the present application, the valve body 14 and the valve seat 15 are integrally formed, and therefore, the valve seat 15 will be described below.

Referring to fig. 4, an end of the valve seat 15 away from the first communication port 11 is further provided with a receiving groove 153, and an end of the valve core assembly 40 is located in the receiving groove 153 and can slide in the receiving groove 153.

Further, the valve seat 15 is further provided with a communication hole 154, the first communication port 11 and the second communication port 12 are respectively communicated with the communication hole 154, the communication hole 154 is communicated with the accommodating groove 153, and the inner diameter of the accommodating groove 153 is larger than that of the communication hole 154, so that processing materials can be saved, and cost can be reduced. One end of the valve body assembly 40 can slide in the communication hole 154 to communicate or block the first communication port 11 and the second communication port 12; the communication hole 154 has a guiding function and can guide the movement of the valve core assembly 40; meanwhile, the circulation of the refrigerant is facilitated, when the valve core assembly 40 slides in a direction away from the first communication port 11 and the second communication port 12, the first communication port 11 and the second communication port 12 can be communicated through the communication hole 154, so that the refrigerant can realize bidirectional circulation.

The reversible electromagnetic valve 100 further comprises a sleeve 20 and an intermediate end cover 30, wherein the sleeve 20 is connected with one end of the valve seat 15 far away from the first communication port 11, the intermediate end cover 30 is installed in the valve cavity 13, the intermediate end cover 30 is connected with one end of the valve seat 15 far away from the first communication port 11, and/or the intermediate end cover 30 is connected with the sleeve 20; the provision of the intermediate end cap 30 can reduce the risk of leakage of the refrigerant and can separate the valve chamber 13 into different chambers.

Example 1

Referring to fig. 2-4, a first mounting groove 155 is formed at one end of the valve seat 15 far away from the first communication port 11, a first step 156 is formed between an inner wall of the first mounting groove 155 and an inner wall of the accommodating groove 153, the sleeve 20 is connected with one end of the valve seat 15 with the first mounting groove 155, the middle end cover 30 is partially mounted in the first mounting groove 155 and is abutted against the first step 156, and the valve core assembly 40 penetrates through the middle end cover 30; the first mounting groove 155 facilitates the mounting of the middle end cover 30, and meanwhile, the middle end cover 30 can reduce the risk of leakage of the refrigerant, and the valve cavity 13 can be divided into different chambers; also, the first step 156 can increase the firmness of the installation of the intermediate end cap 30.

Referring to fig. 2 and 4, the reversible electromagnetic valve 100 further includes a first end cap 31 and a second end cap 32, one end of the valve seat 15 near the first communication port 11 is further provided with a second mounting groove 157, the second mounting groove 157 is communicated with one end of the communication hole 154 far from the accommodating groove 153, and a second step 158 is formed between an inner wall of the second mounting groove 157 and an inner wall of the communication hole 154, so as to facilitate the installation of the first end cap 31; the first end cap 31 is mounted in the second mounting groove 157 and abuts the second step 158, and the second end cap 32 is mounted to the end of the sleeve 20 remote from the valve seat 15.

With continued reference to fig. 2, the valve core assembly 40 extends through the middle end cap 30, and a portion of the valve core assembly 40 extends toward the direction of the first end cap 31 and another portion extends toward the direction of the second end cap 32; the valve core assembly 40 includes a piston unit 41, the piston unit 41 is mounted at one end of the valve core assembly 40 near the second end cover 32, the piston unit 41 is located in the sleeve 20, and the piston unit 41 is abutted against the inner side wall of the sleeve 20 to prevent refrigerant from flowing in series, and can separate the valve cavity 13 under the cooperation of other components, the two sides of the piston unit 41 can form a pressure difference, so that the valve core assembly 40 slides in the valve cavity 13, thereby communicating or blocking the first communication port 11 and the second communication port 12.

Further, the valve chamber 13 includes a first chamber 131, a second chamber 132, and a third chamber 133, wherein the valve body assembly 10, the first end cap 31, and the intermediate end cap 30 form the first chamber 131, specifically, the valve seat 15, the first end cap 31, and the intermediate end cap 30 form the first chamber 131; the valve body assembly 10, the intermediate end cap 30 and the piston unit 41 form a second chamber 132, specifically, the sleeve 20, the intermediate end cap 30 and the piston unit 41 form the second chamber 132; the valve body assembly 10, the piston unit 41 and the second end cap 32 form a third chamber 133, and specifically the sleeve 20, the piston unit 41 and the second end cap 32 form the third chamber 133.

Specifically, the first communication port 11 and the second communication port 12 extend into the first chamber 131 respectively, the sleeve 20 is provided with a first hole 21 and a second hole 22, the first hole 21 is communicated with the second chamber 132, the second hole 22 is communicated with the third chamber 133, a first capillary tube 211 is disposed in the first hole 21, a second capillary tube 221 is disposed in the second hole 22, and the first capillary tube 211 and the second capillary tube 221 are connected to the pilot valve 50 described below, so that the second chamber 132 and the third chamber 133 form a pressure difference to push the piston unit 41 to move.

When it is necessary to close the reversible solenoid valve 100, the high-pressure refrigerant is introduced into the third chamber 133 from the second capillary tube 221, and the refrigerant in the second chamber 132 flows out from the first capillary tube 211, thereby pushing the piston unit 41 to move in a direction approaching the valve seat 15; when it is necessary to open the reversible solenoid valve 100, the high-pressure refrigerant enters the second chamber 132 from the first capillary tube 211, and the refrigerant in the third chamber 133 flows out from the second capillary tube 221, thereby pushing the piston unit 41 to move in a direction away from the valve seat 15.

In the present application, the piston unit 41 includes a first piston bowl 411, a second piston bowl 412, an intermediate baffle 413, a first baffle 414, and a second baffle 415, the first baffle 414, the intermediate baffle 413, and the second baffle 415 are connected to each other, and the first baffle 414 and the second baffle 415 are located at two sides of the intermediate baffle 413, and the first baffle 414 is disposed near the intermediate end cap 30; the first piston bowl 411 is located between the first baffle 414 and the intermediate baffle 413 and the second piston bowl 412 is located between the intermediate baffle 413 and the second baffle 415.

In other embodiments of the present application, the two ends of the first baffle 414 are provided with a resisting part (not shown) protruding towards the direction of the middle end cover 30, and the resisting part extends out of the first piston bowl 411, so that when the high-pressure refrigerant enters the third chamber 133 from the second capillary tube 221 and pushes the piston unit 41 to move towards the direction approaching the valve seat 15, the resisting part can abut against the middle end cover 30, and the impact force is reduced, so that the structural stability of the piston unit 41 is ensured; meanwhile, in another embodiment, the resisting portion is provided with an orifice (not shown) to alleviate the impact force of the piston unit 41 on the intermediate end cap 30, and when the piston unit 41 is pushed to move in a direction approaching the valve seat 15, part of the refrigerant can flow into the first piston bowl 411 through the orifice to form a resistance force, alleviate the impact force of the piston unit 41 on the intermediate end cap 30, thereby enhancing the firmness of the installation of the intermediate end cap 30 and reducing noise.

With continued reference to fig. 2, the valve core assembly 40 further includes a slider unit 42 and a link unit 43, the link unit 43 penetrates through the middle end cover 30, the slider unit 42 is mounted at one end of the link unit 43 near the first end cover 31, the piston unit 41 is connected with the other end of the link unit 43, and when the piston unit 41 is pushed, the slider unit 42 can be driven to move by the link unit 43, so that the slider unit 42 is communicated with or cuts off the first communication port 11 and the second communication port 12.

Further, the link unit 43 is provided with a mounting hole 4311, the slider unit 42 is mounted in the mounting hole 4311, and the mounting hole 4311 facilitates the mounting of the slider unit 42.

Specifically, the slider unit 42 includes an elastic member (not shown) and a first slider 421 and a second slider 422 disposed opposite to each other, the elastic member is located between the first slider 421 and the second slider 422, and one end of the elastic member abuts against the first slider 421 and the other end abuts against the second slider 422, so that the first slider 421 and the second slider 422 can respectively block the first communication port 11 and the second communication port 12. The interaction force generated between the elastic piece and the first slide block 421 and the second slide block 422 can prop up the first slide block 421 and the second slide block 422, so that the first slide block 421 is convenient for plugging the first communication port 11 and the second slide block 422 is convenient for plugging the second communication port 12, and the sealing performance during plugging is improved; further, since the valve seat 15 and the valve body 14 are integrally formed, the end face of the first slider 421 is brought into close contact with the end of the first communication port 11, and the end face of the second slider 422 is brought into close contact with the end of the second communication port 12, so that the sealing performance at the time of sealing can be further improved.

In one embodiment of the present application, the first slider 421 and the second slider 422 have different structures, one end of the first slider 421 can extend into the second slider 422, and a containing cavity (not labeled in the figure) is provided between the first slider 421 and the second slider 422; and the first slider 421 is provided with a balance hole (not shown).

In another embodiment of the present application, the first slide 421 and the second slide 422 have the same structure, so that the types of parts can be reduced, the mold is reduced, the cost is reduced, the first slide 421 and the second slide 422 are oppositely arranged to form the accommodating cavity, and the first slide 421 and the second slide 422 are arranged at intervals to form the balance hole.

In these two embodiments, the elastic member is disposed between the first slider 421 and the second slider 422 and is located in the accommodating cavity, one end of the elastic member abuts against the first slider 421, the other end abuts against the second slider 422, and the balance hole can balance the pressure between the first chamber 131 and the accommodating cavity, so as to prevent the refrigerant from pressing the slider unit 42, thereby ensuring the stability of the slider unit 42.

With continued reference to fig. 2, the connecting rod unit 43 includes a guide frame 431 and a connecting rod 432, the connecting rod 432 penetrates through the middle end cover 30, the guide frame 431 is connected with one end of the connecting rod 432 close to the first communication port 11, the piston unit 41 is connected with the other end of the connecting rod 432, the mounting hole 4311 is formed in the guide frame 431, the slider unit 42 is mounted in the mounting hole 4311, and the guide frame 431 plays a limiting role on the slider unit 42 to prevent the slider unit 42 from tilting. The connecting rod 432 drives the sliding block unit 42 to slide through the guide frame 431, and when the guide frame 431 is worn or the connecting rod 432 is damaged, only lost parts are needed to be replaced, so that replacement and maintenance are convenient, and the cost is low.

With continued reference to fig. 2, the reversible electromagnetic valve 100 further includes a pilot valve 50, where the pilot valve 50 is disposed outside the valve body assembly 10 and connected to the first capillary tube 211 and the second capillary tube 221, and the pressure difference between two sides of the piston unit 41 can be controlled by reversing the pilot valve 50, so as to push the piston unit 41 to move.

Further, the pilot valve 50 comprises a small valve body 51, a low-pressure connecting pipe 52 and a high-pressure connecting pipe 53, the low-pressure connecting pipe 52 and the high-pressure connecting pipe 53 are respectively communicated with a valve cavity of the small valve body 51, an iron core 511 is arranged in an inner cavity of the small valve body 51, a return spring 512 is arranged at one end of the iron core 511, a dragging frame 513 is arranged at the other end of the iron core 511, a sliding bowl 514 is arranged in the dragging frame 513, and the dragging frame 513 can drive the sliding bowl 514 to slide; it should be noted that, the inner cavity of the sliding bowl 514 is communicated with the low-pressure connecting pipe 52 to form a low-pressure area, and the outer cavity of the sliding bowl 514 is communicated with the high-pressure connecting pipe 53 to form a high-pressure area; and one end of the first capillary tube 211 is communicated with the second chamber 132, the other end is communicated with the inside of the small valve body 51, one end of the second capillary tube 221 is communicated with the third chamber 133, and the other end is communicated with the inside of the small valve body 51.

The pilot valve 50 further includes an electromagnetic coil 54, and by controlling the power on or power off of the electromagnetic coil 54, a pressure difference is formed at two sides of the piston unit 41, so as to push the valve core assembly 40 to move, so as to connect or disconnect the first communication port 11 and the second communication port 12, and the specific working principle is as follows:

when the first communication port 11 and the second communication port 12 need to be blocked, the electromagnetic coil 54 is powered off, under the action of the return spring 512, the dragging frame 513 can drive the sliding bowl 514 to move in a direction away from the return spring 512, so that the first capillary 211 is communicated with the low-pressure connecting pipe 52, the second capillary 221 is communicated with the high-pressure connecting pipe 53, and since the low-pressure connecting pipe 52 is a low-pressure area, the refrigerant in the second chamber 132 can flow into the low-pressure area through the first capillary 211, the inner cavity of the sliding bowl 514 and the low-pressure connecting pipe 52, so that the second chamber 132 becomes a low-pressure area, and the high-pressure refrigerant enters the third chamber 133 through the high-pressure connecting pipe 53 and the second capillary 221, so that the third chamber 133 becomes a high-pressure area, and a pressure difference is formed, and under the action of the pressure difference, the piston unit 41 is pushed to move in a direction close to the valve seat 15, so that the first communication port 11 and the second communication port 12 are blocked.

When the first communication port 11 needs to be communicated with the second communication port 12, the electromagnetic coil 54 is powered off, under the electromagnetic force of the coil, the iron core 511 drives the dragging frame 513 to overcome the acting force of the restoring spring 512, so that the sliding bowl 514 moves towards the restoring spring 512, the second capillary 221 is communicated with the low-pressure connecting pipe 52, the first capillary 211 is communicated with the high-pressure connecting pipe 53, and the low-pressure connecting pipe 52 is a low-pressure area, so that the refrigerant in the third chamber 133 can flow into the low-pressure area through the second capillary 221, the inner cavity of the sliding bowl 514 and the low-pressure connecting pipe 52, and the third chamber 133 becomes a low-pressure area, while the high-pressure refrigerant enters the second chamber 132 through the high-pressure connecting pipe 53 and the first capillary 211, so that the second chamber 132 becomes a pressure difference is formed, and under the action of the pressure difference, the piston unit 41 is pushed to move towards the direction away from the valve seat 15, so as to communicate the first communication port 11 with the second communication port 12.

Example two

Referring to fig. 5, the structure of the second embodiment is substantially the same as that of the first embodiment, and the details of the structure and connection of the valve seat 15, the middle end cap 30 and the sleeve 20 in the second embodiment are not repeated.

In this embodiment, the middle end cap 30 is connected to one end of the valve seat 15 far away from the first communication port 11, the peripheral wall of the sleeve 20 is provided with a through groove 23, the middle end cap 30 is provided with a welding part 33 in a protruding manner, and the welding part 33 is installed in the through groove 23 and connected to the inner wall of the through groove 23, so that the tight connection of the valve seat 15, the middle end cap 30 and the sleeve 20 is facilitated, and the tightness of the middle end cap 30 is improved.

Example III

Referring to fig. 6, the structure of the third embodiment is substantially the same as that of the first embodiment, and the details of the structure and connection of the valve seat 15, the middle end cap 30 and the sleeve 20 in the third embodiment are not repeated.

In this embodiment, the middle end cap 30 is located in the sleeve 20, the peripheral wall of the middle end cap 30 is provided with a trough 34, and the trough 34 is used for placing solder, so that the middle end cap 30 is tightly connected with the inner wall of the sleeve 20, the tight connection between the middle end cap 30 and the sleeve 20 is facilitated, and the tightness of the middle end cap 30 is improved.

The present utility model also provides an air conditioning unit (not shown) including the above reversible solenoid valve 100.

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 technical features of the above embodiments may be combined in any manner, and for brevity, all of the possible combinations of the technical features of the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

It will be appreciated by persons skilled in the art that the above embodiments have been provided for the purpose of illustrating the utility model and are not to be construed as limiting the utility model, and that suitable modifications and variations of the above embodiments are within the scope of the utility model as claimed.

Claims (10)

1. The reversible electromagnetic valve comprises a valve body assembly and a valve core assembly, wherein a first communication port and a second communication port are respectively formed in two sides of the valve body assembly, the valve body assembly is provided with a valve cavity, the valve core assembly is arranged in the valve cavity, and the valve core assembly can slide in the valve cavity so as to enable the first communication port and the second communication port to be communicated or separated;

the valve is characterized in that the valve body assembly comprises a valve body and a valve seat, the first communication port and the second communication port penetrate through the valve body and the valve seat, one end of the valve core assembly stretches into the valve seat and can slide to be mutually abutted with the first communication port and the second communication port so as to isolate the first communication port and the second communication port; the valve body and the valve seat are integrally formed.

2. The reversible solenoid valve of claim 1, wherein the valve seat comprises a first portion and a second portion, the first portion and the second portion are disposed in a fitting manner to form a hollow cylindrical structure, the first communication port is disposed on the first portion, the second communication port is disposed on the second portion, and the first portion and the second portion are integrally formed.

3. The reversible solenoid valve of claim 1, wherein an end of the valve seat remote from the first communication port is further provided with a receiving slot, and wherein an end of the valve core assembly is positioned in the receiving slot and is capable of sliding in the receiving slot.

4. The reversible solenoid valve according to claim 3, wherein the valve seat is further provided with a communication hole, the first communication port and the second communication port are respectively communicated with the communication hole, the communication hole is communicated with the accommodation groove, the inner diameter of the accommodation groove is larger than the inner diameter of the communication hole, and one end of the valve core assembly can slide in the communication hole to communicate or block the first communication port and the second communication port.

5. The reversible solenoid valve of claim 4, further comprising a sleeve and an intermediate end cap, wherein the sleeve is connected to an end of the valve seat remote from the first port, the intermediate end cap is mounted in the valve chamber, the intermediate end cap is connected to an end of the valve seat remote from the first port, and/or the intermediate end cap is connected to the sleeve.

6. The reversible solenoid valve according to claim 5, wherein a first mounting groove is provided at an end of the valve seat remote from the first communication port, a first step is formed between an inner wall of the first mounting groove and an inner wall of the receiving groove, the sleeve is connected to an end of the valve seat having the first mounting groove, the intermediate cap portion is mounted in the first mounting groove and abuts against the first step, and the spool assembly penetrates through the intermediate cap.

7. The reversible solenoid valve according to claim 5, wherein the intermediate end cap is connected to an end of the valve seat remote from the first communication port, a through groove is formed in a peripheral wall of the sleeve, and a welding portion is provided in the intermediate end cap in a protruding manner, and is installed in the through groove and connected to an inner wall of the through groove.

8. The reversible solenoid valve according to claim 5, wherein said intermediate end cap is positioned within said sleeve, and wherein a trough is provided in an outer peripheral wall of said intermediate end cap for receiving solder to connect said intermediate end cap to said sleeve inner wall.

9. The reversible solenoid valve according to claim 6, 7 or 8, further comprising a first end cap and a second end cap, wherein a second mounting groove is further formed at one end of the valve seat near the first communication port, the second mounting groove is communicated with one end of the communication hole far away from the accommodating groove, a second step is formed between an inner wall of the second mounting groove and an inner wall of the communication hole, the first end cap is mounted in the second mounting groove and abuts against the second step, and the second end cap is mounted at one end of the sleeve far away from the valve seat.

10. An air conditioning unit comprising a reversible solenoid valve according to any one of claims 1 to 9.

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