CN115370774A - Reversible electromagnetic valve and air conditioning unit with same - Google Patents

Abstract

The invention 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 communicating port and a second communicating 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 to enable the first communicating port and the second communicating port to be communicated or separated; the valve body assembly comprises a valve body and a valve seat, the valve body and the valve seat are integrally formed, the first communicating port and the second communicating port penetrate through the valve body and the valve seat, one end of the valve core assembly extends into the valve seat and can be slidably abutted against the first communicating port and the second communicating port to separate the first communicating port and the second communicating port. The invention 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 solenoid valve and air conditioning unit with same

Technical Field

The invention 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 partition of the pipeline, thereby realizing the bidirectional circulation of the refrigerant.

The existing reversible electromagnetic valve comprises a valve body and a valve seat, the valve seat is connected with the valve body in a welding mode, two end faces of the valve seat are not parallel, when the valve core assembly abuts against the end face of the valve seat, inner leakage can occur between the valve core assembly and the valve seat, the valve core assembly and the valve seat can be clamped, and the service life is prolonged.

Disclosure of Invention

Based on this, the present invention provides a reversible solenoid valve, which aims at the above technical problems, and the technical scheme is as follows:

a reversible electromagnetic valve comprises a valve body assembly and a valve core assembly, wherein a first communicating port and a second communicating 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 to enable the first communicating port and the second communicating port to be communicated or separated; the valve body assembly comprises a valve body and a valve seat, the first communicating port and the second communicating port penetrate through the valve body and the valve seat, and one end of the valve core assembly extends into the valve seat and can be slidably moved to be mutually abutted against the first communicating port and the second communicating port so as to partition the first communicating port and the second communicating 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 condition that the end faces of the valve seat are not parallel 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 condition that a valve core assembly is clamped 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 procedures of the valve seat and the valve body can be reduced, and the cost is saved.

In one embodiment, the valve seat includes 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 opening is formed in the first portion, the second communication opening is formed in the second portion, and the first portion and the second portion are integrally formed.

So set up, set up first portion and second portion integrated into one piece, 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, an accommodating groove is further formed in one end, away from the first communication port, of the valve seat, and one end of the valve core assembly is located in the accommodating groove and can slide in the accommodating groove.

In one embodiment, the valve seat further defines a communication hole, the first communication hole and the second communication hole 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 the inner diameter of the communication hole, and one end of the valve core assembly can slide in the communication hole to communicate with or block the first communication hole and the second communication hole.

The communicating 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 towards the direction far 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 holes, 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 solenoid valve further includes a sleeve and an intermediate end cap, the sleeve is connected to an end of the valve seat away from the first communication port, the intermediate end cap is installed in the valve cavity, the intermediate end cap is connected to an end of the valve seat away from the first communication port, and/or the intermediate end cap is connected to the sleeve.

So set up, the risk that the refrigerant leaks can be reduced in the setting of middle end cover, and can separate the valve pocket and form different cavities.

In one embodiment, a first installation groove is formed in one end, away from the first communication port, of the valve seat, a first step is formed between the inner wall of the first installation groove and the inner wall of the accommodating groove, the sleeve is connected with one end, having the first installation groove, of the valve seat, the middle end cover is partially installed in the first installation groove and abuts against the first step, and the valve core assembly penetrates through the middle end cover.

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

In one embodiment, the middle end cover is connected with one end of the valve seat far away from the first communication port, a through groove is formed in the circumferential wall of the sleeve, a welding part is convexly arranged on the middle end cover, 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 material placing groove is formed in the peripheral wall of the middle end cover, and the material placing groove is used for placing solder so that the middle end cover is connected with the inner wall of the sleeve.

So set up, be convenient for intermediate end cover and sheathed tube zonulae occludens.

In one embodiment, the reversible solenoid valve further includes a first end cap and a second end cap, a second mounting groove is further formed in one end of the valve seat close to the first communication hole, 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.

So set up, the first end cover of second mounting groove installation of being convenient for.

The invention also provides the following technical scheme:

an air conditioning unit comprises the reversible electromagnetic valve.

Compared with the prior art, the reversible electromagnetic valve provided by the invention has the advantages that the valve body and the valve seat are integrally formed, the condition that the end surfaces of the valve seat are not parallel 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 condition that a valve core assembly is clamped 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 procedures of the valve seat and the valve body can be reduced, and the cost is saved.

Drawings

Fig. 1 is a schematic sectional view of a partial 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 invention.

Fig. 3 is a schematic structural view of the valve seat and the valve body which are integrally formed.

FIG. 4 is a schematic cross-sectional view of a valve seat integrally formed with a valve body.

Fig. 5 is a partially schematic sectional view of a reversible electromagnetic valve according to a second embodiment of the present invention.

Fig. 6 is a partial cross-sectional view of a reversible electromagnetic valve according to a third embodiment of the present invention.

In the figure, 100, a reversible solenoid valve; 10. a valve body assembly; 11. a first communication port; 111. a first connecting pipe; 12. a second communication port; 121. a second connecting 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 part; 152. a second section; 153. a containing groove; 154. a communicating 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 tube; 22. a second hole; 221. a second capillary tube; 23. a through groove; 30. a middle end cap; 31. a first end cap; 32. a second end cap; 33. a weld; 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 plate; 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. mounting holes; 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. sliding a bowl; 52. a low pressure connection pipe; 53. a high-pressure connecting pipe; 54. an electromagnetic coil.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the 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 mounted 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 herein in the description of the invention 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. 2, the present application provides a reversible solenoid valve 100 installed in an air conditioning unit for controlling the connection or disconnection of a pipeline, so as to implement bidirectional circulation of a refrigerant.

Referring to fig. 1, a conventional reversible solenoid valve 101 includes a valve body 1011 and a valve seat 1012, the valve seat 1012 and the valve body 1011 are welded to connect, so that two end surfaces of the valve seat 1012 are not parallel, when a valve core assembly 1013 abuts against an end surface of the valve seat 1012, internal leakage occurs between the valve core assembly 1013 and the valve seat 1012, and a jam occurs between the valve core assembly 1013 and the valve seat 1012, thereby reducing the service life of the reversible solenoid valve 101.

With reference to fig. 2, the reversible electromagnetic valve 100 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 formed on 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 connect or disconnect the first communication port 11 and the second communication port 12.

Further, a first connecting pipe 111 is provided in the first communication port 11, a second connecting pipe 121 is provided in the second communication port 12, and the first connecting pipe 111 and the second connecting pipe 121 are connected to a pipeline of the air conditioning unit, respectively.

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 communicating opening 11 and the second communicating opening 12 penetrate through the valve body 14 and the valve seat 15, one end of the valve core assembly 40 extends into the valve seat 15 and can slide to abut against the first communicating opening 11 and the second communicating opening 12, so as to block the first communicating opening 11 and the second communicating opening 12; the valve body 14 and the valve seat 15 are integrally formed, so that the condition that the end surfaces 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 condition that the valve core assembly 40 and the valve seat 15 are clamped 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 processes 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 attached 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; set up first portion 151 and second portion 152 integrated into one piece, can further guarantee the depth of parallelism of valve seat 15, be provided with two valve seats 1012 in the current reversible solenoid valve 101 relatively, two valve seats 1012 weld with the valve body 1011 respectively, cause unparallel between two valve seat 1012 terminal surfaces easily, when leading to case subassembly 1013 to carry out the shutoff, can produce the condition of interior hourglass, set up valve seat 15 integrated into one piece in this application, can avoid appearing interior hourglass and the dead condition of card between case subassembly 40 and the valve seat 15, improve the life of reversible solenoid valve 100.

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

In the present application, since the valve element 14 and the valve seat 15 are integrally formed, the valve seat 15 will be described below in general.

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

Furthermore, 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 the processing material can be saved, and the cost can be reduced. One end of the valve core 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 capable of guiding the movement of the valve core assembly 40; meanwhile, the circulation of the refrigerant is facilitated, and 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 be circulated in two directions.

The reversible solenoid valve 100 further comprises a sleeve 20 and an intermediate end cover 30, 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 refrigerant leakage and can separate the valve chamber 13 into different chambers.

Example one

Referring to fig. 2-4, a first mounting groove 155 is formed at an end of the valve seat 15 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 receiving groove 153, the sleeve 20 is connected to the end of the valve seat 15 having the first mounting groove 155, the middle end cover 30 is partially mounted in the first mounting groove 155 and abuts against the first step 156, and the valve core assembly 40 penetrates through the middle end cover 30; the arrangement of the first installation groove 155 facilitates the installation of the middle end cover 30, and meanwhile, the arrangement of the middle end cover 30 can reduce the risk of leakage of the refrigerant and can separate the valve cavity 13 into different cavities; also, the first step 156 can increase the security of the mounting of the intermediate end cap 30.

Referring to fig. 2 and 4, the reversible solenoid valve 100 further includes a first end cap 31 and a second end cap 32, wherein a second mounting groove 157 is further formed at an end of the valve seat 15 close to the first communication hole 11, the second mounting groove 157 is communicated with an end of the communication hole 154 far away from the receiving 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 mounting of the first end cap 31; the first end cap 31 is mounted in the second mounting groove 157 and abuts against the second step 158, and the second end cap 32 is mounted on the end of the sleeve 20 away from the valve seat 15.

With continued reference to fig. 2, the valve core assembly 40 penetrates the middle end cover 30, and a portion of the valve core assembly 40 extends toward the direction close to the first end cover 31, and another portion extends toward the direction close to the second end cover 32; the valve core assembly 40 includes a piston unit 41, the piston unit 41 is installed at one end of the valve core assembly 40 close to the second end cover 32, the piston unit 41 is located in the sleeve 20, and the piston unit 41 abuts against the inner side wall of the sleeve 20 to prevent the refrigerant from streaming, and can separate the valve cavity 13 under the cooperation with other components, and a pressure difference can be formed at two sides of the piston unit 41 to enable the valve core assembly 40 to slide in the valve cavity 13, so as to communicate or block the first communication port 11 and the second communication port 12.

Further, the valve cavity 13 includes a first chamber 131, a second chamber 132 and a third chamber 133, wherein the valve body assembly 10, the first end cover 31 and the middle end cover 30 form the first chamber 131, and specifically, the valve seat 15, the first end cover 31 and the middle end cover 30 form the first chamber 131; the valve body assembly 10, the intermediate end cover 30 and the piston unit 41 form a second chamber 132, and specifically, the sleeve 20, the intermediate end cover 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 respectively extend into the first chamber 131, 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, the first hole 21 is provided with a first capillary tube 211, the second hole 22 is provided with a second capillary tube 221, and the first capillary tube 211 and the second capillary tube 221 are connected to the pilot valve 50, so that a pressure difference is formed between the second chamber 132 and the third chamber 133 to push the piston unit 41 to move.

When it is required to close the reversible solenoid valve 100, the high-pressure refrigerant enters 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, so as to push the piston unit 41 to move in a direction close to the valve seat 15; when it is required 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, 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, where first baffle 414, intermediate baffle 413, and second baffle 415 are connected to each other, and first baffle 414 and second baffle 415 are located at two sides of intermediate baffle 413, and first baffle 414 is located near intermediate end cover 30; first piston bowl 411 is positioned between first baffle 414 and intermediate baffle 413, and second piston bowl 412 is positioned between intermediate baffle 413 and second baffle 415.

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

Referring 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 installed at one end of the link unit 43 close to the first end cover 31, the piston unit 41 is connected to the other end of the link unit 43, and when the piston unit 41 is pushed, the slider unit 42 can be driven by the link unit 43 to move, so that the slider unit 42 communicates with or blocks the first communicating opening 11 and the second communicating opening 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 block the first communicating opening 11 and the second communicating opening 12, respectively. The first slider 421 and the second slider 422 can be opened by the interaction force generated between the elastic piece and the first slider 421 and the second slider 422, so that the first communication port 11 can be conveniently sealed by the first slider 421, the second communication port 12 can be conveniently sealed by the second slider 422, and the sealing performance during sealing is improved; further, since the valve seat 15 and the valve body 14 are integrally formed, the end surface of the first slider 421 is brought into close contact with the end portion of the first communication port 11, and the end surface of the second slider 422 is brought into close contact with the end portion of the second communication port 12, whereby the sealing property 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 receiving cavity (not labeled) is provided between the first slider 421 and the second slider 422; and the first slide 421 is provided with a balance hole (not shown).

In another embodiment of the present application, the first slider 421 and the second slider 422 have the same structure, which can reduce the number of parts, thereby reducing the number of dies and the cost, and the first slider 421 and the second slider 422 are disposed opposite to each other to form an accommodating cavity, and the first slider 421 and the second slider 422 are disposed at an interval to form a balance hole.

In these two embodiments, the elastic element is disposed between the first slider 421 and the second slider 422 and located in the accommodating cavity, one end of the elastic element 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 extruding the slider unit 42, thereby ensuring the stability of the slider unit 42.

Referring 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 to one end of the connecting rod 432 near the first communication port 11, the piston unit 41 is connected to the other end of the connecting rod 432, the mounting hole 4311 is opened on the guide frame 431, the slider unit 42 is mounted on the mounting hole 4311, and the guide frame 431 limits 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 the lost part needs to be replaced, so that the replacement and maintenance are convenient, and the cost is low.

Referring to fig. 2, the reversible solenoid valve 100 further includes a pilot valve 50, 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 pilot valve 50 is reversed to control the pressure difference between two sides of the piston unit 41, 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 connection pipe 52 to form a low-pressure area, and the cavity outside the sliding bowl 514 is communicated with the high-pressure connection pipe 53 to form a high-pressure area; and one end of the first capillary tube 211 communicates with the second chamber 132 and the other end communicates with the inside of the small valve body 51, and one end of the second capillary tube 221 communicates with the third chamber 133 and the other end communicates with the inside of the small valve body 51.

The pilot valve 50 further includes an electromagnetic coil 54, and the electromagnetic coil 54 is controlled to be powered on or powered off, so that a pressure difference is formed between two sides of the piston unit 41, and the valve core assembly 40 is pushed 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 isolated, the electromagnetic coil 54 is de-energized, under the action of the return spring 512, the dragging frame 513 can drive the sliding bowl 514 to move towards the direction away from the return spring 512, so that the first capillary tube 211 is communicated with the low pressure connection tube 52, the second capillary tube 221 is communicated with the high pressure connection tube 53, because the low pressure connection tube 52 is a low pressure region, the refrigerant in the second chamber 132 can flow into the low pressure region through the first capillary tube 211, the inner cavity of the sliding bowl 514 and the low pressure connection tube 52, so that the second chamber 132 becomes a low pressure region, and the high pressure refrigerant enters the third chamber 133 through the high pressure connection tube 53 and the second capillary tube 221, so that the third chamber 133 becomes a high pressure region, so that a pressure difference is formed, and under the action of the pressure difference, the piston unit 41 is pushed to move towards the direction close to the valve seat 15, so as to isolate the first communication port 11 from the second communication port 12.

When the first communication port 11 needs to be communicated with the second communication port 12, the electromagnetic coil 54 is de-energized, under the action of the electromagnetic force of the coil, the iron core 511 drives the dragging frame 513 to overcome the acting force of the return spring 512, so that the sliding bowl 514 moves towards the direction of the return spring 512, the second capillary tube 221 is communicated with the low-pressure connecting tube 52, the first capillary tube 211 is communicated with the high-pressure connecting tube 53, because the low-pressure connecting tube 52 is a low-pressure region, the refrigerant in the third chamber 133 can flow into the low-pressure region through the second capillary tube 221, the inner cavity of the sliding bowl 514 and the low-pressure connecting tube 52, so that the third chamber 133 becomes a low-pressure region, and the high-pressure refrigerant enters the second chamber 132 through the high-pressure connecting tube 53 and the first capillary tube 211, so that the second chamber 132 becomes a high-pressure region, so that a pressure difference is formed, and under the action of the pressure difference, the piston unit 41 is pushed to move towards the direction far 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 same parts are not repeated herein, except for the structure and connection manner of the valve seat 15, the intermediate end cap 30 and the sleeve 20 in the second embodiment.

In this embodiment, the middle cap 30 is connected to an end of the valve seat 15 away from the first communication port 11, the through slot 23 is formed in the peripheral wall of the sleeve 20, the middle cap 30 is protruded with the welding portion 33, and the welding portion 33 is installed in the through slot 23 and connected to the inner wall of the through slot 23, so that the valve seat 15, the middle cap 30 and the sleeve 20 are tightly connected, and the sealing performance of the middle 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 same parts are not described again, except for the structure and connection manner of the valve seat 15, the intermediate end cap 30 and the sleeve 20 in the third embodiment.

In this embodiment, the middle end cap 30 is located in the sleeve 20, a material placing groove 34 is formed in the outer peripheral wall of the middle end cap 30, and the material placing groove 34 is used for placing solder so that the middle end cap 30 is tightly connected with the inner wall of the sleeve 20, thereby facilitating the tight connection between the middle end cap 30 and the sleeve 20 and improving the sealing performance of the middle end cap 30.

The invention also provides an air conditioning unit (not shown) comprising the reversible solenoid valve 100.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The features of the above embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above embodiments are not described, but should be construed as being within the scope of the present specification as long as there is no contradiction between the combinations of the features.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that suitable changes and modifications to the above embodiments are within the scope of the claimed invention as long as they are within the spirit of the present invention.

Claims (10)

1. A reversible electromagnetic valve comprises a valve body assembly and a valve core assembly, wherein a first communicating port and a second communicating 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 to enable the first communicating port and the second communicating port to be communicated or separated;

the valve body assembly is characterized by comprising a valve body and a valve seat, wherein the first communication port and the second communication port penetrate through the valve body and the valve seat, and one end of the valve core assembly extends into the valve seat and can be slidably moved to be mutually abutted against the first communication port and the second communication port so as to block the first communication port and the second communication port; the valve body and the valve seat are integrally formed.

2. The reversible solenoid valve according to claim 1, wherein the valve seat includes 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 opened on the first portion, the second communication port is opened on the second portion, and the first portion and the second portion are integrally formed.

3. The reversible electromagnetic valve according to claim 1, wherein an accommodating groove is further formed at an end of the valve seat away from the first communication port, and an end of the valve core assembly is located in the accommodating groove and can slide in the accommodating groove.

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

5. The reversible solenoid valve according to claim 3, further comprising a sleeve connected to an end of the valve seat remote from the first communication port, and an intermediate cap installed in the valve chamber, the intermediate cap being connected to an end of the valve seat remote from the first communication port, and/or the intermediate cap being connected to the sleeve.

6. The reversible electromagnetic valve according to claim 5, wherein a first mounting groove is formed at an end of the valve seat away 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 the end of the valve seat having the first mounting groove, the middle end cover is partially mounted in the first mounting groove and abuts against the first step, and the valve core assembly penetrates through the middle end cover.

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

8. The reversible electromagnetic valve according to claim 5, wherein the intermediate end cap is located in the sleeve, and a material placing groove is formed in the outer peripheral wall of the intermediate end cap and used for placing solder so as to connect the intermediate end cap with the inner wall of the sleeve.

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 an end of the valve seat close to the first communication hole, the second mounting groove is communicated with an 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 an end of the sleeve far away from the valve seat.

10. Air conditioning assembly, characterized in that it comprises a reversible solenoid valve according to any one of claims 1 to 9.

Images