CN217977453U - 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 a valve cavity is arranged in the valve body, a first communicating hole and a second communicating hole are formed in the valve body, the valve core assembly is positioned in the valve cavity and comprises a guide frame and a sliding block component, and the guide frame is sleeved on the outer peripheral side of the sliding block component; the slider part includes first slider and second slider, and first slider is close to first intercommunicating pore setting, and the second slider is close to the second intercommunicating pore setting, and first slider and second slider all include interconnect's first portion and second portion, and the first portion of first slider can shutoff first intercommunicating pore, and the first portion of second slider can shutoff second intercommunicating pore, the leading truck can with the first portion of first slider and/or the first portion butt of second slider. The utility model has the advantages of: the first sliding block and the second sliding block can be prevented from being clamped, so that the reversible electromagnetic valve can work normally.

Description

Reversible solenoid 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 switch the refrigeration system, and the solenoid valve includes a valve core assembly and a valve body, and the solenoid valve is switched by moving the valve core assembly inside the valve body.

Referring to fig. 1, when a medium causes a guide frame 2 to rotate, a contact point H is formed between a second portion 5 of a first slider 3 and a second portion 5 of a second slider 4, and a contact point J is formed between the guide frame 2 and the second portion 5 of the first slider 3 or the second portion 5 of the second slider 4, so that the guide frame 2 drives the slider component 1 to rotate, the first slider 3 or the second slider 4 is locked and cannot be reset, the problem of poor sealing performance of the slider component 1 is caused, medium leakage is caused, and the using effect of a product is affected.

SUMMERY OF THE UTILITY MODEL

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

a reversible electromagnetic valve comprises a valve body and a valve core assembly, wherein the valve body is internally provided with a valve cavity, the valve body is provided with a first communicating hole and a second communicating hole, the valve core assembly is positioned in the valve cavity and can move in the valve cavity to communicate or separate the first communicating hole and the second communicating hole, the valve core assembly comprises a guide frame and a sliding block component, and the guide frame is sleeved on the outer peripheral side of the sliding block component; the slider component comprises a first slider and a second slider, the first slider is close to the first communicating hole, the second slider is close to the second communicating hole, the first slider and the second slider both comprise a first portion and a second portion which are connected with each other, the first portion of the first slider can seal the first communicating hole, the first portion of the second slider can seal the second communicating hole, and the guide frame can be abutted to the first portion of the first slider and/or the first portion of the second slider.

So set up, when the medium leads to the leading truck to take place the rotation, the leading truck can with the first portion of first slider and/or the first portion butt of second slider, and first portion can be respectively with the terminal surface butt of first intercommunicating pore and second intercommunicating pore, can not arouse the rotation of first slider and second slider, thereby reduce the rotation angle of leading truck, the leading truck can not form contact point J with the second portion of first slider or the second portion of second slider, then the leading truck can not drive the slider part rotation, can avoid first slider and second slider card to die, thereby guarantee that reversible solenoid valve can normal work.

In one embodiment, the second portion of the first slider has an inner diameter larger than an outer diameter of the second portion of the second slider, the second portion of the first slider is fitted around the outer periphery of the second portion of the second slider, and the second portion of the first slider and the second portion of the second slider can abut against each other; or, the outer diameter of the second part of the second slider is larger than the inner diameter of the second part of the first slider, the second part of the second slider is sleeved on the outer periphery of the second part of the first slider, and the second part of the first slider and the second part of the second slider can be abutted with each other.

So set up, can take place when rotatory at first slider and second slider, first slider and second slider can the butt each other, produce the barrier force to the rotation of restriction first slider and second slider.

In one embodiment, the outer diameter of the first part is larger than that of the second part, the guide frame is sleeved outside the second part, a first step surface is formed between the first part of the first slider and the second part of the first slider, and the distance between the surface of the guide frame facing the first step surface and the first step surface is less than or equal to 0.5mm; and/or a second step surface is formed between the first part of the second sliding block and the second part of the second sliding block, and the distance between the surface of the guide frame facing the second step surface and the second step surface is less than or equal to 0.5mm.

By the arrangement, the guide frame can be in contact with the first step surface and/or the second step surface after small-amplitude rotation is generated, and the smaller the gap is, the stronger the anti-rotation effect is.

In one embodiment, an accommodating cavity is formed between the first slider and the second slider, a first elastic member is disposed in the accommodating cavity, and two ends of the first elastic member respectively abut against the first portion of the first slider and the first portion of the second slider.

So set up, flow into from first through-hole when the medium, can form the impact to the slider part, the first elastic component of holding intracavity this moment can play the cushioning effect to the impact force of medium, extension slider part life, and simultaneously, first elastic component can play the supporting role to the slider part, strengthens the leakproofness of slider part to the shutoff of first through-hole and second through-hole.

In one embodiment, the valve cavity includes a first valve cavity, the slider member is located in the first valve cavity, a balance hole communicated with the accommodating cavity is formed in the first portion of the first slider and/or the first portion of the second slider, and the first valve cavity is communicated with the accommodating cavity through the balance hole.

So set up, this balanced hole and first valve pocket intercommunication to the pressure in balanced holding chamber and the first valve pocket prevents that first slider and second slider from producing deformation because the internal and external pressure difference.

In one embodiment, a valve seat is arranged in the valve body, a guide part is arranged on the inner wall of the valve seat, and the guide frame can be matched with the guide part to limit the circumferential rotation of the guide frame.

In one embodiment, the guide portion is a guide groove, and the guide frame is embedded in the guide groove and is capable of moving in the guide groove along the axial direction of the reversible solenoid valve.

So set up, set up the guide way in the valve body inner wall, produce the effort to the leading truck through the valve body inner wall, restrict its circumference and rotate, have higher stability and reliability to through spacing leading truck, guaranteed the axial motion of whole case subassembly.

In one embodiment, the valve core assembly further comprises a piston component and a connecting rod, the piston component is connected to one end, away from the slider component, of the connecting rod, the piston component comprises a first piston bowl and a second piston bowl which are bowl-shaped, the first piston bowl and the second piston bowl are arranged in a back-to-back mode and are connected with each other, the first piston bowl faces towards the slider component, the second piston bowl faces towards a direction away from the slider component, the outer side wall of the first piston bowl and the outer side wall of the second piston bowl are abutted to the inner wall of the valve cavity, and second elastic pieces are arranged on the inner walls of the first piston bowl and the second piston bowl.

So set up, guaranteed that piston part and valve body inner wall butt are inseparable to this leakproofness of having guaranteed second valve pocket and third valve pocket.

In one embodiment, a second end cover is arranged in the valve body, and a third end cover is arranged at one end of the valve body; a first bulge structure is arranged on the side surface of the piston component facing the second end cover, the first bulge structure is annular, a first throttling hole is formed in the side surface of the first bulge structure, and a medium can enter between the second end cover and the piston component through the first throttling hole; and/or a second bulge structure is arranged on the side surface of the piston component facing the third end cover, the second bulge structure is annular, a second throttling hole is formed in the side surface of the second bulge structure, and a medium can enter between the third end cover and the piston component through the second throttling hole.

With this arrangement, in the process of opening and closing the valve, the medium can enter between the piston member and the second end cap from the first orifice or the second orifice, or between the piston member and the third end cap, so that the contact area between the medium and the piston member is increased, and the piston member can be pushed to move more smoothly.

The utility model discloses still provide following technical scheme:

a refrigerating system comprises the reversible electromagnetic valve.

Compared with the prior art, the utility model provides a reversible solenoid valve establishes the leading truck through overlapping at slider part periphery side, when the leading truck takes place to rotate, the leading truck can with the first portion of first slider and/or the first portion butt of second slider, and first portion can with the terminal surface butt of first intercommunicating pore and second intercommunicating pore respectively, can restrict the rotation angle of leading truck, thereby make the leading truck can not take place the butt with second portion, then first slider can not block with the second slider and die, thereby guarantee the leakproofness of slider part.

Drawings

Fig. 1 is a schematic structural view of a conventional slider member and a guide frame.

Fig. 2 is a front sectional view of a reversible solenoid valve according to a first embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line D-D of FIG. 2;

fig. 4 is a right side view of the reversible solenoid valve according to the first embodiment of the present invention;

FIG. 5 is a cross-sectional view taken along line C-C of FIG. 4;

fig. 6 is a perspective view of a reversible solenoid valve according to a second embodiment of the present invention;

fig. 7 is a front sectional view of a reversible solenoid valve according to a second embodiment of the present invention;

fig. 8 is a top view cross-sectional view of a reversible solenoid valve according to a second embodiment of the present invention;

FIG. 9 is a left side view of the valve seat of the second embodiment;

FIG. 10 is a cross-sectional view taken along line B-B of FIG. 9;

FIG. 11 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 9;

FIG. 12 is a perspective view of a valve seat according to a second embodiment;

FIG. 13 is a schematic view of the interaction of the slider member and the guide frame of the reversible solenoid valve.

The symbols in the figures represent the following:

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; 152. a second valve cavity; 153. a third valve cavity; 16. a guide portion; 161. a guide groove; 17. a main body portion; 18. a drive section; 19. a valve seat; 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. a first slider; 3111. a first part; 3112. a second section; 3113. a first step surface; 3114. a second step surface; 312. a second slider; 313. a first elastic member; 314. an accommodating cavity; 315. a balance hole; 316. a guide frame; 32. a connecting rod; 33. a piston member; 331. an inner baffle; 332. an intermediate baffle; 333. an outer baffle; 334. a second elastic member; 336. a first piston bowl; 337. a second piston bowl; 34. a first bump structure; 341. a first orifice; 35. a second bump structure; 351. a second orifice.

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. 2 to 13, the reversible solenoid valve 100 is applied to a refrigeration system for realizing bidirectional circulation of a medium.

Referring to fig. 2, the reversible solenoid valve 100 includes a valve body 10 and a valve core assembly 30, wherein the valve core assembly 30 is disposed inside the valve body 10 and can axially move inside the valve body 10, so as to open and close the reversible solenoid valve 100.

Specifically, the valve body 10 is provided with a first communicating hole 11 and a second communicating hole 12, one end of the first communicating hole 11 and the second communicating hole 12 can communicate with the inside of the valve body 10, and the other end is used as an inlet and an outlet of the medium, so as to form a passage through which the medium can pass. The first communication hole 11 may be an inlet or an outlet, and the second communication hole 12 may be an inlet and an outlet, and when the first communication hole 11 is an inlet, the second communication hole 12 is an outlet, or vice versa.

The two ends of the valve body 10 are respectively provided with a first end cover 21 and a third end cover 23, and the first end cover 21 and the third end cover 23 seal 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.

The valve body 10 is provided with a second end cap 22 therein, one end of the valve core assembly 30 is disposed between the first end cap 21 and the second end cap 22, and the other end thereof penetrates through the second end cap 22 and extends into a space between the second end cap 22 and the third end cap 23. The valve body 10 is also internally provided with a valve seat 19, and the valve seat 19 is tightly abutted against the inner wall of the valve body 10.

Referring to fig. 2, in the first embodiment, the valve body 10 includes a main body 17 and a driving portion 18, the main body 17 and the driving portion 18 are integrally provided, and the valve seat 19 is provided in the main body 17 and integrally provided with the main body 17.

Referring to fig. 6 and 7, in the second embodiment, the valve body 10 includes a main body 17 and a driving part 18, the main body 17 and the driving part 18 are separately provided, a valve seat 19 is provided in the main body 17, and the driving part 18 is connected to the main body 17.

Specifically, the valve body 10 has a valve cavity 15, the valve cavity 15 includes a first valve cavity 151, a second valve cavity 152 and a third valve cavity 153, the first valve cavity 151 is formed by the first end cover 21 and the second end cover 22 in a matching manner, the second valve cavity 152 is formed by the second end cover 22 and the valve core assembly 30 in a matching manner at the side close to the first communication hole 11 and the second communication hole 12, and the third valve cavity 153 is formed by the valve core assembly 30 and the third end cover 23 in a matching manner.

The valve core assembly 30 is located in the valve cavity 15 and includes a slider member 31, a connecting rod 32, a guide frame 316 and a piston member 33, wherein two ends of the connecting rod 32 are respectively connected with the slider member 31 and the piston member 33, and the guide frame 316 is sleeved on the outer periphery of the slider member 31. The slider member 31 is provided in the valve seat 19, and when the reversible solenoid valve 100 is in the first position, the slider member 31 can block the medium flow between the first communication hole 11 and the second communication hole 12. The slider member 31 is connected to the piston member 33 via the connecting rod 32, and the slider member 31 and the piston member 33 are connected to both ends of the connecting rod 32. The utility model discloses can only drive two other parts through the removal of one of them piston part 33, the moving as a whole of slider part 31 and connecting rod 32 has simplified the structure of case subassembly 30 under the circumstances of the holistic work efficiency of assurance case subassembly 30. 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.

Specifically, the slider member 31 includes a first slider 311 and a second slider 312, the first slider 311 is disposed near the first communication hole 11, the second slider 312 is disposed near the second communication hole 12, the first portion 3111 of the first slider 311 can close the first communication hole 11, and the second slider 312 can close the second communication hole 12.

Each of the first slider 311 and the second slider 312 includes a first portion 3111 and a second portion 3112 connected to each other, the first portion 3111 of the first slider 311 can close the first communication hole 11, the first portion 3111 of the second slider 312 can close the second communication hole 12, the first portion 3111 of the first slider 311 can abut against an end surface of the first communication hole 11, and the first portion 3111 of the second slider 312 can abut against an end surface of the second communication hole 12.

Referring to fig. 1, in the conventional solenoid valve, when a medium causes the guide frame 2 to rotate, the guide frame 2 drives the slider component 1 to rotate together, the second portion 5 of the first slider 3 and the second portion 5 of the second slider 4 form a butting point H, and since the guide frame 2 and the first portion of the first slider 3 and the first portion of the second slider 4 do not abut against each other, the rotation angle of the guide frame 2 is relatively large, the guide frame 2 and the first slider 3 or the second slider 4 form a butting point J, and the rotation angle of the first slider 3 or the second slider 4 is increased, so that the first slider 3 or the second slider 4 is jammed and cannot be reset.

In the present application, when the guide holder 316 is rotated by the medium, the guide holder 316 can abut against the first portion 3111 of the first slider 311 and/or the first portion 3111 of the second slider 312, the first portion 3111 of the first slider 311 can be abutted against the end surface of the first communication hole 11, and the first portion 3111 of the second slider 312 can be abutted against the end surface of the second communication hole 12, so that the rotation angle of the guide holder 316 can be reduced, and a contact point J can be prevented from being formed between the second portion 3112 of the first slider 311 and/or the second portion 3112 of the second slider 312 and the guide holder 316, whereby the guide holder 316 can be prevented from rotating the slider member 31, and the slider member 31 can be prevented from being caught.

Further, the inner diameter of the second portion 3112 of the first slider 311 is larger than the outer diameter of the second portion 3112 of the second slider 312, so that the second portion 3112 of the first slider 311 can be sleeved on the outer peripheral side of the second portion 3112 of the second slider 312; alternatively, the outer diameter of the second portion 3112 of the second slider 312 is larger than the inner diameter of the second portion 3112 of the first slider 311, so that the second portion 3112 of the second slider 312 can be sleeved on the outer peripheral side of the second portion 3112 of the first slider 311, the two sliders are sleeved together, and the second portion 3112 of the first slider 311 and the second portion 3112 of the second slider 312 can be abutted and limited to form a contact point G when the media impact is received, thereby playing a role in rotation resistance.

Further, the outer diameter of the first portion 3111 is larger than that of the second portion 3112, and the guide frame 316 is sleeved outside the second portion 3112. That is, the outer diameter of the first portion 3111 of the first slider 311 is larger than the outer diameter of the second portion 3112 of the first slider 311, so that a first step surface 3113 is formed between the first portion 3111 of the first slider 311 and the second portion 3112 of the first slider 311, and the distance between the surface of the guide frame 316 facing the first step surface 3113 and the first step surface 3113 is 0.5mm or less; and/or, the outer diameter of the first portion 3111 of the second slider 312 is larger than the outer diameter of the second portion 3112 of the second slider 312, so that a second step surface 3114 is formed between the first portion 3111 of the second slider 312 and the second portion 3112 of the second slider 312, and the distance between the surface of the guide frame 316 facing the second step surface 3114 and the second step surface 3114 is less than or equal to 0.5mm. Specifically, the distance of the guide frame 316 toward the first step face 3113 or the distance of the guide frame 316 toward the second step face 3114 may be any value of 0.4mm, 0.3mm, 0.2mm, 0.1mm, 0mm, or less than 0.5mm.

It will be appreciated that this configuration ensures that, upon a small amount of rotation of the guide frame 316, the guide frame 316 will form a contact point E with the first step surface 3113 of the first portion 3111 of the first slider 311 and/or the second step surface 3114 of the first portion 3111 of the second slider 312, which contact point E may act as a limit to the rotation of the guide frame 316. Meanwhile, when the first slider 311 and the second slider 312 rotate, the contact point E may play a role in limiting the rotation of the first slider 311 and the second slider 312. Specifically, when the guide frame 316 rotates to contact the first portion 3111 of the first slider 311, when the flow direction of the medium is changed, the contact point E generates a moment on the guide frame 316 by the medium, so that the guide frame 316 is adjusted in the horizontal direction, thereby restricting the rotation of the entire slider member 31.

The first slider 311 and the second slider 312 can be abutted against the end surfaces of the first through hole 11 and the second through hole 12, respectively, and when the guide frame 316 drives the first slider 311 and the second slider 312 to rotate in a small range, the first slider 311 and the second slider 312 form a contact point F with the end surfaces of the first through hole 11 and the second through hole 12, and the contact point F can restrict the rotation of the first slider 311 and the second slider 312.

Further, the first slider 311 and the second slider 312 are sleeved together, the first slider 311 and the second slider 312 are matched to form a receiving cavity 314, a first elastic member 313 is disposed in the receiving cavity 314, and two ends of the first elastic member 313 abut against the first portion 3111 of the first slider 311 and the first portion 3111 of the second slider 312 respectively. When a medium flows into the first communication hole 11 and impacts the slider member 31, the first elastic member 313 in the accommodating cavity 314 can buffer the impact of the medium, so as to prolong the service life of the slider member 31, and at the same time, the first elastic member 313 can support the slider member 31, so as to enhance the sealing performance of the slider member 31 for plugging the first communication hole 11 and the second communication hole 12.

Further, the first portion 3111 of the first slider 311 and/or the first portion 3111 of the second slider 312 are provided with a balance hole 315 communicated with the accommodating cavity 314, and the balance hole 315 is communicated with the first valve cavity 151 to balance pressures in the accommodating cavity 314 and the first valve cavity 151, so as to prevent the first slider 311 and the second slider 312 from being deformed due to difference between internal pressure and external pressure.

Referring to fig. 8 to 12, preferably, the inner wall of the valve body 10 is provided with a guide portion 16, and the guide frame 316 can cooperate with the guide portion 16 to limit the circumferential rotation of the guide frame 316, so as to prevent the guide frame 316 from rotating along with the slider member 31, and further limit the rotation of the slider member 31.

In this embodiment, the guide portion 16 has a shape of the guide groove 161, the guide frame 316 is fitted into the guide groove 161, and the guide groove 161 can limit the rotation of the guide frame 316 and limit the movement track of the guide frame 316 so as to axially move in the valve body 10 along the guide groove 161. In other embodiments, the guiding portion 16 may also be a first rib, and a groove is disposed on the guiding frame 316 for matching with the first rib, and the first rib and the groove cooperate to limit the rotation of the guiding frame 316.

With continued reference to fig. 2 and 7, the piston member 33 includes a first piston bowl 336 and a second piston bowl 337 having a bowl shape, the first piston bowl 336 and the second piston bowl 337 are disposed opposite to each other and connected to each other, the first piston bowl 336 is disposed toward the second end cap 22, and the second piston bowl 337 is disposed toward the third end cap 23. The outer side walls of the first piston bowl 336 and the second piston bowl 337 abut against the inner wall of the valve chamber 15. First piston bowl 336 and second piston bowl 337 adopt flexible material preparation such as polyvinyl chloride, and first piston bowl 336 and second piston bowl 337 can make piston member 33 keep the leakproofness with the valve body 10 inner wall at gliding in-process to, the structure of bowl form can increase the pressure of first piston bowl 336 and second piston bowl 337 and valve body 10 inner wall butt, strengthens sealed effect.

Specifically, all be equipped with second elastic component 334 at first piston bowl 336 and second piston bowl 337 inner wall, second elastic component 334 is two and all is the annular, one of them second elastic component 334 butt in the inner wall of first piston bowl 336, another second elastic component 334 butt is at the inner wall of second piston bowl 337, the dynamics of first piston bowl 336 and second piston bowl 337 and the inner wall butt of valve body 10 can be adjusted to second elastic component 334, not only can guarantee piston part 33 and slide smoothly, but also can guarantee the leakproofness.

Preferably, the second elastic member 334 may be a tooth spring, which has strong toughness and strength, and can make the first piston bowl 336 and the second piston bowl 337 more reliably abut against the inner wall of the valve cavity 15.

The piston member 33 further includes an inner barrier 331, an intermediate barrier 332, and an outer barrier 333, the inner barrier 331 is disposed in the first piston bowl 336, the outer barrier 333 is disposed in the second piston bowl 337, and the inner barrier 331, the outer barrier 333, the first piston bowl 336, and the second piston bowl 337 are connected by the intermediate barrier 332, wherein one of the second elastic members 334 is disposed between the first piston bowl 336 and the inner barrier 331, and the other second elastic member 334 is disposed between the second piston bowl 337 and the outer barrier 333.

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 leads into the valve body 10, is connected to the second valve chamber 152, the other end of the third communicating hole is connected to the pilot valve, one end of the fourth communicating hole 14, which leads into the valve body 10, is connected to the third valve chamber 153, the other end of the fourth communicating hole is also connected to the pilot valve, and the pilot valve can move the piston member 33 by controlling a pressure difference between the second valve chamber 152 and the third valve chamber 153.

Specifically, when the third communication hole 13 and the fourth communication hole 14 form a pressure difference between the second valve chamber 152 and the third valve chamber 153, and the piston member 33 is pushed to move, the piston member 33 will drive the connecting rod 32 to move in the same direction and at the same speed, and 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 communication hole 11 and the second communication hole 12.

The reversible solenoid valve 100 further includes a first protrusion 34, the first protrusion 34 is disposed in the valve chamber 15, and when the reversible solenoid valve 100 is in the first position, the first protrusion 34 can limit the spool assembly 30 from moving toward the first communication hole 11 and the second communication hole 12. It will be appreciated that the first raised structure 34 can cooperate with the second end cap 22 to limit further movement of the spool assembly 30 during valve closing to protect the spool assembly 30 from impacting the inner wall or other components of the valve body 10 and impacting the life of the reversible solenoid valve 100.

The reversible electromagnetic valve 100 further includes a second protrusion structure 35, the second protrusion structure 35 is disposed in the valve cavity 15, and when the reversible electromagnetic valve 100 is in the second position, the second protrusion structure 35 can limit the spool assembly 30 from moving in a direction away from the first communication hole 11 and the second communication hole 12. It can be appreciated that during the valve opening process, the second protrusion structure 35 can cooperate with the third end cap 23 to limit further movement of the valve core assembly 30, so as to protect the valve core assembly 30 from colliding with the inner wall or other components of the valve body 10, and avoid affecting the service life of the reversible solenoid valve 100.

In this embodiment, the first protruding structure 34 is a bowl-shaped protrusion, and is disposed on the inner baffle 331 and integrally formed with the inner baffle 331, the second protruding structure 35 is a bowl-shaped protrusion, and is disposed on the outer baffle 333 and integrally formed with the outer baffle 333, and the first protruding structure 34 and the second protruding structure 35 limit the movement of the piston member 33. In other embodiments, the first protrusion structure 34 may also be disposed on the side of the second end cap 22 facing the piston member 33, and the second protrusion structure 35 may also be disposed on the side of the third end cap 23 facing the piston member 33.

The first protrusion structure 34 is ring-shaped, a first orifice 341 is opened on a side surface of the first protrusion structure 34, and a medium can enter between the second end cap 22 and the piston member 33 through the first orifice 341. When the electromagnetic valve is in a closed state and needs to be opened, the medium can enter between the second end cover 22 and the piston member 33 from the first throttling hole 341, and the contact area of the medium and the piston member 33 is enlarged, so that the piston member 33 is pushed to move more smoothly.

The second boss 35 has a ring shape, and a second orifice 351 is opened in a side surface of the second boss 35, and the medium can enter between the piston member 33 and the third end cap 23 through the second orifice 351. When the solenoid valve is in an open state and needs to be opened, the medium can enter between the piston member 33 and the third end cover 23 through the second throttle hole 351, and the contact area between the medium and the piston member 33 is increased, so that the piston member 33 is pushed to move more smoothly.

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

In operation, when cooling is required, the pilot valve feeds high pressure medium from the third communication hole 13 into the second valve chamber 152 to raise the pressure inside the second valve chamber 152, and the third valve chamber 153 is connected to the low pressure outlet of the pilot valve and has a lower pressure. At this time, a pressure difference is formed between the second valve chamber 152 and the third valve chamber 153, and by the pressure difference, the piston member 33 is pushed to move to the second position, and the piston member 33 moves the slider member 31 toward the third end cover 23 via the connecting rod 32, thereby opening the first valve chamber 151 between the first communication hole 11 and the second communication hole 12, so that the medium can flow between the first communication hole 11 and the second communication hole 12.

At this time, since the guide frame 316 is subjected to the impact force of the unbalanced medium, it is easy to rotate under the action of the fluid, so as to drive the first slider 311 and the second slider 312 to rotate, when the direction of the medium is changed, the guide frame 316 forms a contact point E with the first step surface 3113 and/or the second step surface 3114 under the action of the medium, the contact point E generates a moment on the guide frame 316, so that the guide frame 316 is adjusted in the horizontal direction, and at the same time, the first slider 311 and the second slider 312 form a contact point F with the end surfaces of the first through hole 11 and the second through hole 12, the second portion 3112 of the first slider 311 and the second portion 3112 of the second slider 312 can be abutted and limited to form a contact point G, and the contact points generate forces, so as to reduce the rotation angles of the slider member 31 and the guide frame 316, and avoid the slider member 31 from being jammed.

Further, the piston member 33 is provided with a second projection structure 35 on the side of the outer shutter 333 of the third end cap 23, and at the end of the stroke of the piston member 33 moving toward the third end cap 23, the second projection structure 35 abuts against the third end cap 23, and the outer shutter 333 of the piston member 33 is prevented from directly colliding with the third end cap 23.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification 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 concept of the present invention, several variations and modifications can be made, which all fall 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 a valve cavity (15) is arranged in the valve body (10), a first communicating hole (11) and a second communicating hole (12) are formed in the valve body (10), the valve core assembly (30) is positioned in the valve cavity (15) and can move in the valve cavity (15) to communicate or separate the first communicating hole (11) and the second communicating hole (12), the valve core assembly (30) comprises a guide frame (316) and a sliding block component (31), and the guide frame (316) is sleeved on the outer peripheral side of the sliding block component (31);

characterized in that the slider member (31) comprises a first slider (311) and a second slider (312), the first slider (311) being disposed adjacent to the first communication hole (11), the second slider (312) being disposed adjacent to the second communication hole (12), the first slider (311) and the second slider (312) each comprising a first portion (3111) and a second portion (3112) connected to each other, the first portion (3111) of the first slider (311) being capable of closing off the first communication hole (11), the first portion (3111) of the second slider (312) being capable of closing off the second communication hole (12); the guide frame (316) can abut against the first portion (3111) of the first slider (311) and/or the first portion (3111) of the second slider (312).

2. The reversible electromagnetic valve according to claim 1, wherein the second portion (3112) of the first slider (311) has an inner diameter larger than an outer diameter of the second portion (3112) of the second slider (312), the second portion (3112) of the first slider (311) is fitted around the outer peripheral side of the second portion (3112) of the second slider (312), and the second portion (3112) of the first slider (311) and the second portion (3112) of the second slider (312) are capable of abutting against each other; or, the outer diameter of the second portion (3112) of the second slider (312) is larger than the inner diameter of the second portion (3112) of the first slider (311), the second portion (3112) of the second slider (312) is fitted around the outer peripheral side of the second portion (3112) of the first slider (311), and the second portion (3112) of the first slider (311) and the second portion (3112) of the second slider (312) can abut against each other.

3. The reversible solenoid valve according to claim 1, characterized in that the first portion (3111) has an outer diameter greater than that of the second portion (3112), the guide frame (316) is housed outside the second portion (3112), a first step surface (3113) is formed between the first portion (3111) of the first slider (311) and the second portion (3112) of the first slider (311), and the distance between the surface of the guide frame (316) facing the first step surface (3113) and the first step surface (3113) is less than or equal to 0.5mm; and/or a second step surface (3114) is formed between the first portion (3111) of the second slider (312) and the second portion (3112) of the second slider (312), and a distance between a surface of the guide frame (316) facing the second step surface (3114) and the second step surface (3114) is less than or equal to 0.5mm.

4. The reversible solenoid valve according to claim 1, characterized in that a housing cavity (314) is provided between the first slider (311) and the second slider (312), a first elastic member (313) is provided in the housing cavity (314), and both ends of the first elastic member (313) are respectively abutted against the first portion (3111) of the first slider (311) and the first portion (3111) of the second slider (312).

5. The reversible electromagnetic valve according to claim 4, characterized in that the valve cavity (15) comprises a first valve cavity (151), the slider member (31) is located in the first valve cavity (151), a balance hole (315) communicated with the accommodating cavity (314) is formed in the first portion (3111) of the first slider (311) and/or the first portion (3111) of the second slider (312), and the first valve cavity (151) is communicated with the accommodating cavity (314) through the balance hole (315).

6. The reversible solenoid valve according to claim 1, characterized in that a valve seat (19) is provided in the valve body (10), the inner wall of the valve seat (19) being provided with a guide (16), the guide frame (316) being able to cooperate with the guide (16) to limit the circumferential rotation of the guide frame (316).

7. The reversible solenoid valve according to claim 6, characterized in that the guide portion (16) is a guide groove (161), and the guide frame (316) is embedded in the guide groove (161) and is movable in the guide groove (161) in the axial direction of the reversible solenoid valve.

8. The reversible solenoid valve according to claim 1, wherein the valve core assembly (30) further comprises a piston member (33) and a connecting rod (32), the piston member (33) is connected to an end of the connecting rod (32) away from the slider member (31), the piston member (33) comprises a first piston bowl (336) and a second piston bowl (337) in a bowl shape, the first piston bowl (336) and the second piston bowl (337) are disposed opposite to each other and connected to each other, the first piston bowl (336) is disposed toward the slider member (31), the second piston bowl (337) is disposed toward a direction away from the slider member (31), outer side walls of the first piston bowl (336) and the second piston bowl (337) are abutted against an inner wall of the valve cavity (15), and second elastic members (334) are disposed on inner walls of the first piston bowl (336) and the second piston bowl (337).

9. The reversible solenoid valve according to claim 8, characterized in that a second end cap (22) is provided in the valve body (10), and a third end cap (23) is provided at one end of the valve body (10); a first bulge structure (34) is arranged on the side, facing the second end cover (22), of the piston part (33), the first bulge structure (34) is annular, a first throttle hole (341) is formed in the side face of the first bulge structure (34), and a medium can enter a space between the second end cover (22) and the piston part (33) through the first throttle hole (341); and/or a second bulge structure (35) is arranged on the side surface of the piston component (33) facing the third end cover (23), the second bulge structure (35) is annular, a second throttling hole (351) is formed in the side surface of the second bulge structure (35), and a medium can enter between the third end cover (23) and the piston component (33) through the second throttling hole (351).

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

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