CN218094442U - Four-way valve and air conditioning equipment - Google Patents

Abstract

The application relates to the technical field of heat exchange, in particular to a four-way valve and an air conditioning device. Specifically, the cross valve that this application provided includes first takeover, the main valve body, sliding valve subassembly and guide holder, first takeover is used for connecting the gas vent of compressor, the internal valve pocket that is equipped with of main valve, first takeover is connected the main valve body and is communicated the valve pocket, the sliding valve subassembly is located the valve pocket and is kept away from the one end of first takeover, the guide holder is located the one end that the sliding valve subassembly is close to first takeover, be equipped with the choked flow structure in the valve pocket, the choked flow structure includes movable sleeve and connects in the baffle that movable sleeve is close to first takeover one end, the choked flow structure is located the outside of guide holder through movable sleeve cover, and the choked flow structure passes through the baffle intercommunication or cuts off first takeover and valve pocket. The application provides a cross valve has solved the refrigerant refluence problem to improve refrigerant circulation system's life.

Description

Four-way valve and air conditioning equipment

Technical Field

The application relates to the field of heat exchange, in particular to a four-way valve and air conditioning equipment.

Background

In the technical field of heat exchange equipment, the refrigerant generates backflow phenomenon in the refrigerant circulating system due to pressure change or pipeline oscillation, and the backflow refrigerant impacts the refrigerant circulating system, so that the service life of the whole refrigerant circulating system is shortened.

SUMMERY OF THE UTILITY MODEL

Therefore, a need exists for a four-way valve and an air conditioning apparatus to solve the problem of refrigerant backflow.

Specifically, the four-way valve that this application provided includes first takeover, the main valve body, sliding valve subassembly and guide holder, the internal valve pocket that is equipped with of main valve, the main valve body and intercommunication valve pocket are connected to first takeover, the axial activity of valve pocket can be followed to the sliding valve subassembly in the valve pocket, be equipped with the choked flow structure in the valve pocket, the choked flow structure includes movable sleeve and connects in movable sleeve and be close to the baffle of first takeover one end, the choked flow structure is located the outside of guide holder through movable sleeve cover, and the choked flow structure passes through the baffle intercommunication or cuts off first takeover and valve pocket.

In one embodiment, the side wall of the partition board close to the guide seat, the inner wall of the sleeve and the side wall of the guide seat close to the partition board are surrounded to form a movable cavity, one or both of the outer wall of the guide seat and the inner wall of the movable sleeve is/are provided with a flow guide groove, and the movable cavity can be communicated with the valve cavity through the flow guide groove. It can be understood that, so set up, improved the thrust effect that one side that the choked flow structure deviates from first takeover received greatly, and then improved the speed that the choked flow structure cuts off first takeover and valve pocket, effectively prevented the refrigerant backward flow.

In one embodiment, the guide groove penetrates through two end faces of the guide seat in the axial direction of the movable sleeve. By the arrangement, the guide groove is simpler to process and better in smoothness, and the refrigerant in the valve cavity can conveniently enter the movable cavity through the guide groove.

In one embodiment, the guide grooves are uniformly distributed along the circumferential direction of the guide seat. It will be appreciated that this arrangement facilitates a more smooth movement of the flow-impeding structure towards the first nozzle.

In one embodiment, a convex strip is arranged on the end face of one side, close to the guide seat, of the partition plate, one or more grooves are formed by the convex strip, the sleeve and the partition plate in an enclosing mode, and the grooves are communicated with the valve cavity through the flow guide grooves. It can be understood that the arrangement is convenient for the separation of the two end surfaces of the clapboard and the positioning seat which are close to each other.

In one embodiment, a plurality of flow guide grooves are formed in the circumferential direction of the guide seat, the partition plate is divided into a plurality of grooves by the raised lines, and the grooves are correspondingly communicated with one or more flow guide grooves. It can be understood that, by the arrangement, the rate of the flow resisting structure for separating the first connecting pipe from the valve cavity is increased, and the refrigerant backflow is effectively prevented.

In one embodiment, the partition, the protruding strip and the movable sleeve are of an integrally formed structure. It will be appreciated that so arranged, the structural strength of the flow resisting structure is enhanced.

In one embodiment, a gap is formed in one end, away from the partition plate, of the movable sleeve, and the valve cavity can be communicated with the movable cavity through the gap. It can be understood that, with such an arrangement, the refrigerant can overcome the gravity of the flow resisting structure to push the flow resisting structure to move towards the direction close to the first connecting pipe, so as to separate the first connecting pipe and the valve cavity.

In one embodiment, the baffle plate protrudes from the outer side surface of the movable sleeve along the radial direction of the movable sleeve to form a pressure-bearing protrusion. It will be appreciated that, with this arrangement, the pressure on the end face of the flow blocking structure on the side close to the guide seat is increased. And then the rate of the flow resisting structure for separating the first connecting pipe and the valve cavity is improved, and the refrigerant backflow is effectively prevented.

In one embodiment, the depth of the movable sleeve is smaller than the length of the guide seat along the axial direction of the movable sleeve. It will be appreciated that, with this arrangement, the pressure on the end face of the flow blocking structure on the side close to the guide seat is further increased. The refrigerant can quickly push the flow blocking structure to move towards the direction close to the first connecting pipe.

The application also provides an air conditioning device, which comprises the four-way valve in any one of the above embodiments.

In the cross valve that this application provided, the choke structure locates the outside of guide holder through movable sleeve cover for the choke structure can be close to or keep away from the direction motion of first takeover along the axial orientation of guide holder, and then avoids the moving direction of choke structure to take place the skew. Therefore, the precision of the flow resisting structure for communicating the first connecting pipe with the valve cavity is improved, or the precision of the flow resisting structure for separating the first connecting pipe from the valve cavity is improved. The partition plate is arranged to facilitate the flow resisting structure to separate or communicate the first connecting pipe and the valve cavity. Further, one side end face of the partition board close to the first connecting pipe can be set to be a plane or a circular arc face or other shapes so as to adapt to the shape of the position where the first connecting pipe is communicated with the valve cavity.

To sum up, the cross valve that this application provided has solved the refrigerant refluence problem to improve refrigerant circulation system's life.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a first schematic diagram of a four-way valve according to the present disclosure;

FIG. 2 is a schematic diagram of a four-way valve configuration provided herein;

fig. 3 is a first schematic structural view of a flow blocking structure provided herein;

fig. 4 is a second schematic structural diagram of a flow blocking structure provided in the present application;

FIG. 5 is a partial cross-sectional view of FIG. 4;

FIG. 6 is a schematic structural view of a guide seat provided in the present application;

FIG. 7 is a third schematic diagram of a four-way valve according to the present disclosure;

FIG. 8 is an enlarged partial view of FIG. 7 at A;

FIG. 9 is a fourth schematic diagram of a four-way valve according to the present disclosure;

FIG. 10 is an enlarged partial view of FIG. 9 at B;

FIG. 11 is a schematic view of a first connecting ring;

FIG. 12 is a schematic view of a secondary attachment ring;

FIG. 13 is a partial schematic illustration of a first enlarged view of the four-way valve provided herein;

fig. 14 is a partially enlarged schematic view of a four-way valve provided in the present application.

Reference numerals: 1. a first adapter tube; 2. a second adapter tube; 3. a third connection pipe; 4. a fourth connection pipe; 5. a main valve body; 51. a valve cavity; 52. a spool valve assembly; 521. a first piston; 522. a second piston; 523. a slider; 523a, inner cavity; 524. a guide frame; 53. a guide seat; 531. a diversion trench; 54. a first valve seat; 541. A first through hole; 55. a flow-impeding structure; 551. a sealing surface; 552. a seal member; 552a, a seal groove; 553. A seal ring; 554. a connecting strip; 555. a movable sleeve; 555a, a gap; 556. a partition plate; 556a, convex strips; 556b, bearing protrusions; 557. a groove; 56. a movable cavity; 57a, a first limiting step; 57b and a second limit step; 58a and a first connecting port; 58b and a second connection port; 58c and a third connection port; 58d and a fourth connection port; 59. a second valve seat; 591. a second through hole; 592. a third through hole; 593. a fourth via hole; 6. A first valve body; 61. a first hydraulic chamber; 62. a first body segment; 63. a first seal section; 631. a first step structure; 64. a first connecting ring; 7. a second valve body; 71. a second hydraulic chamber; 72. a second body segment; 73. a second seal section; 731. a second step structure; 74. a second connection ring; 8. a pilot valve; 81. a first capillary tube; 82. a second capillary tube; 83. a fourth capillary tube; 84. a third capillary.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "secured to" or "disposed" 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 "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used in the description of the present application are for illustrative purposes only and do not represent the only embodiments.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

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

In the technical field of heat exchange equipment, the refrigerant generates backflow phenomenon in the refrigerant circulating system due to pressure change or pipeline oscillation, and the backflow refrigerant impacts the refrigerant circulating system, so that the service life of the whole refrigerant circulating system is shortened.

In order to solve the problem of refrigerant backflow in the refrigerant system and to improve the service life of the refrigerant circulation system, please refer to fig. 1-2, the present application provides a four-way valve and an air conditioning apparatus. Specifically, the four-way valve provided by the application comprises a first connecting pipe 1 and a main valve body 5, wherein a valve cavity 51 is arranged in the main valve body 5, and the first connecting pipe 1 is connected with the main valve body 5 and communicated with the valve cavity 51. A flow blocking structure 55 is arranged in the valve cavity 51, when the refrigerant flows from the first connecting pipe 1 to the valve cavity 51, the refrigerant can push the flow blocking structure 55 to move towards a direction away from the first connecting pipe 1, so that the first connecting pipe 1 is communicated with the valve cavity 51, and when the refrigerant has a tendency of flowing from the valve cavity 51 to the first connecting pipe 1, the refrigerant can push the flow blocking structure 55 to move towards a direction close to the first connecting pipe 1, so as to block the first connecting pipe 1 and the valve cavity 51.

As shown in fig. 1, when the refrigerant enters the first connection pipe 1 from the discharge port of the compressor, the pressure inside the first connection pipe 1 is higher than the pressure inside the valve chamber 51. That is, the pressure acting on the end surface of the choke structure 55 close to the first connecting pipe 1 is greater than the pressure acting on the end surface of the choke structure 55 far from the first connecting pipe 1. Furthermore, it can be seen that the pressure applied to the end surface of the flow blocking structure 55 close to the first connecting pipe 1 is greater than the pressure applied to the end surface of the flow blocking structure 55 far from the first connecting pipe 1. In this way, the flow blocking structure 55 can move away from the first connecting pipe 1 under the action of the pressure difference, so that the first connecting pipe 1 communicates with the valve chamber 51. As shown in fig. 2, when the refrigerant in the four-way valve has a tendency of backflow, that is, when the refrigerant has a tendency of flowing from the valve chamber 51 to the first connection pipe 1, the pressure in the valve chamber 51 is higher than the pressure in the first connection pipe 1. That is, the pressure acting on the end surface of the choke structure 55 on the side away from the first connecting pipe 1 is greater than the pressure acting on the end surface of the choke structure 55 on the side close to the first connecting pipe 1. Further, the pressure applied to the end surface of the choke structure 55 on the side away from the first connecting pipe 1 is greater than the pressure applied to the end surface of the choke structure 55 on the side close to the first connecting pipe 1. The flow-obstructing structure 55 is thus moved towards the first connecting pipe 1 by the pressure difference between the two end faces. That is, the refrigerant in the valve chamber 51 can push the flow blocking structure 55 to move to the connection between the first connecting pipe 1 and the valve body in the direction close to the first connecting pipe 1, so that the flow blocking structure 55 blocks the communication between the first connecting pipe 1 and the valve chamber 51, and the refrigerant in the valve chamber 51 is prevented from flowing back to the first connecting pipe 1.

To sum up, the problem of refrigerant refluence in the refrigerant system is solved to the cross valve that this application provided to refrigerant circulation system's life-span has been improved.

To facilitate installation of the flow blocking structure 55, in an embodiment, as shown in fig. 1-2, the four-way valve further includes a sliding valve assembly 52 and a guide seat 53, the sliding valve assembly 52 is movable in the valve cavity 51 along an axis of the valve cavity 51, and the flow blocking structure 55 is movably engaged with the guide seat 53 in a direction approaching or departing from the first connection pipe 1 to open or close communication between the first connection pipe 1 and the valve cavity 51.

So, through setting up guide holder 53, avoid choked flow structure 55 to take place the skew when moving towards the direction that is close to or keeps away from first takeover 1 under the promotion of refrigerant, and then improved choked flow structure 55 and communicated the precision of first takeover 1 with valve pocket 51, or improved choked flow structure 55 and cut off the precision of first takeover 1 with valve pocket 51. Because the guide seat 53 is arranged at one end of the sliding valve assembly 52 close to the first connecting pipe 1, an assembly for installing the flow resisting structure 55 does not need to be additionally arranged in the valve cavity 51, and the installation difficulty of the flow resisting structure 55 in the valve cavity 51 is reduced.

In order to facilitate the connection of the first connection pipe 1 and the main valve body 5, in an embodiment, as shown in fig. 1-2, a first valve seat 54 is disposed in the valve chamber 51, the first valve seat 54 is provided with a first through hole 541, the first connection pipe 1 extends into the first through hole 541 and is fixedly connected with the first valve seat 54, and the first connection pipe 1, the first through hole 541 and the valve chamber 51 are sequentially communicated.

Further, in order to reduce the difficulty of the flow blocking structure 55 separating the first connecting pipe 1 from the valve chamber 51, in an embodiment, as shown in fig. 1-2, two end surfaces of the first valve seat 54 and the flow blocking structure 55, which are oppositely disposed, are both flat surfaces, and when the flow blocking structure 55 moves toward a direction close to the first connecting pipe 1, the first valve seat 54 can be tightly attached to the flow blocking structure 55 to separate the communication between the first connecting pipe 1 and the valve chamber 51. Through setting up first valve seat 54 and the relative two terminal surfaces that set up of choked flow structure 55 as the plane, first valve seat 54 is inseparabler with the laminating of choked flow structure 55 to make the leakproofness between choked flow structure 55 and the first valve seat 54 better, prevent that the refrigerant from spilling.

In order to increase the fault tolerance of the flow blocking structure 55 for blocking the first connecting pipe 1 from the valve chamber 51, in an embodiment, the area of the end surface of the flow blocking structure 55 close to the first valve seat 54 is larger than the cross-sectional area of the first connecting pipe 1.

Further, when the spool valve assembly 52 moves to any position in the valve chamber 51, the projection of the first nozzle 1 in the axial direction falls completely on the end surface of the choke structure 55 on the side close to the first valve seat 54. As such, even if the sliding valve assembly 52 moves to any position in the valve chamber 51, the flow blocking structure 55 will not be affected to block the first nozzle 1 and the valve chamber 51.

In order to increase the moving rate of the flow blocking structure 55 in the direction away from the first adapter 1, in an embodiment, as shown in fig. 1-2, the first through hole 541 includes a cylindrical hole and a tapered hole distributed along the axial direction, the first adapter 1 is inserted into the cylindrical hole and tightly fits to the inner wall of the cylindrical hole, the tapered hole connects the cylindrical hole and the valve chamber 51, and the cross-sectional area of the tapered hole gradually increases from the direction close to the first adapter 1 to the direction away from the first adapter 1.

By providing the cylindrical hole, the degree of the fastening of the first connection pipe 1 to the first valve seat 54 is advantageously improved. Through setting up the bell mouth, and the cross-sectional area of bell mouth is from being close to first takeover 1 to keeping away from the direction of first takeover 1 crescent, then is favorable to improving the refrigerant in first takeover 1 and flow blocking structure 55's area of contact to improve the pressure effect that flow blocking structure 55 received, and then improve the moving rate of flow blocking structure 55 orientation keeping away from the direction of first takeover 1.

In order to enhance the sealing performance of the flow blocking structure 55 and the first valve seat 54, in an embodiment, as shown, an end surface of the flow blocking structure 55 close to the first valve seat 54 is defined as a sealing surface 551, the sealing surface 551 is provided with a sealing member 552, the sealing member 552 is provided with a sealing groove 552a opening towards the first valve seat 54, and the maximum cross-sectional area of the sealing groove 552a is larger than that of the first through hole 541, so that the sealing groove 552a can block the opening of the first through hole 541 close to the valve cavity 51 when the spool assembly 52 is in different communication positions.

Thus, when the refrigerant pushes the flow blocking structure 55 to move toward the direction close to the first connection pipe 1 until the sealing surface 551 is attached to the end surface of the first valve seat 54, the sealing groove 552a can completely cover the opening of the first through hole 541, so that the sealing performance of the flow blocking structure 55 in cooperation with the first valve seat 54 is enhanced, and the refrigerant is prevented from entering the first connection pipe 1 from the valve cavity 51.

Further, in an embodiment, as shown in fig. 3, an inner wall of the sealing groove 552a is spherical, and the inner wall of the sealing groove 552a is recessed toward a direction away from the first valve seat 54. Thus, when the refrigerant flows from the first connecting pipe 1 to the flow blocking structure 55, the spherical sealing groove 552a increases the force-bearing area of the flow blocking structure 55, and further increases the pressure on the end surface of one side of the flow blocking structure 55 close to the first connecting pipe 1, which is beneficial to the refrigerant to push the flow blocking structure 55 to move towards the direction far away from the first connecting pipe 1, thereby being beneficial to fast communicating the first connecting pipe 1 and the valve cavity 51.

Further, in order to further enhance the sealing performance of the flow blocking structure 55 in cooperation with the first valve seat 54, in an embodiment, as shown in fig. 3, the outer profile of the sealing member 552 is circular, so that an annular sealing ring 553 is formed between the outer wall of the sealing member 552 and the inner wall of the sealing groove 552a, and the flow blocking structure 55 can block the first connecting pipe 1 and the valve chamber 51 through the sealing ring 553. In this way, the sealing ring 553 forms a line seal with a side end surface of the first valve seat 54 close to the flow blocking structure 55, and the sealing performance of the flow blocking structure 55 in cooperation with the first valve seat 54 is further enhanced.

In one embodiment, as shown in fig. 3, the number of the sealing members 552 is plural, a plurality of the sealing members 552 are spaced apart from each other in the axial direction of the main valve body 5, and a connecting strip 554 is provided between adjacent sealing members 552, and an end surface of the connecting strip 554 near the first valve seat 54 is located in the same plane as an end surface of the sealing member 552 near the first valve seat 54.

With this arrangement, when the spool valve assembly 52 moves the flow blocking structure 55 axially along the main valve body 5 in the valve cavity 51, the sealing members 552 spaced axially along the main valve body 5 can block the first connecting pipe 1 and the valve cavity 51. Moreover, since the connecting bar 554 is provided between the adjacent sealing members 552, the end surface of the connecting bar 554 near the first valve seat 54 and the end surface of the sealing member 552 near the first valve seat 54 are located in the same plane. Therefore, when the sealing surface 551 moves relative to the first valve seat 54 in the axial direction of the main valve body 5, the connecting strip 554 serves as a guide to prevent the seal 552 from being damaged by crimping, thereby degrading the sealing performance.

Generally, the four-way valve has two communication modes, corresponding to two communication positions of the spool valve assembly 52, and therefore, in the present embodiment, the number of the sealing members 552 is 2.

In order to facilitate the installation of the choke structure 55, in an embodiment, as shown in fig. 1-2, the choke structure 55 is movably sleeved outside the guide seat 53. In other embodiments, the obstructing structure 55 may be inserted into a guiding hole (not shown) of the guiding seat 53, or the obstructing structure 55 may be movably engaged with the guiding seat 53.

In an embodiment, as shown in fig. 4 to 5, the flow blocking structure 55 includes a movable sleeve 555 and a partition 556 connected to one end of the movable sleeve 555 near the first nozzle 1, the flow blocking structure 55 is sleeved outside the guide seat 53 through the movable sleeve 555, and the flow blocking structure 55 communicates with or separates the first nozzle 1 and the valve chamber 51 through the partition 556.

The choke structure 55 is sleeved outside the guide seat 53 through the movable sleeve 555, so that the choke structure 55 can move in a direction approaching or departing from the first connecting pipe 1 along the axial direction of the guide seat 53, and the moving direction of the choke structure 55 is prevented from deviating. Therefore, the accuracy of the flow resisting structure 55 for communicating the first connecting pipe 1 with the valve cavity 51 is improved, or the accuracy of the flow resisting structure 55 for separating the first connecting pipe 1 from the valve cavity 51 is improved. The partition plate 556 is provided to facilitate the flow blocking structure 55 to block or connect the first connecting pipe 1 and the valve chamber 51. Further, one side end surface of the partition plate 556 close to the first adapter tube 1 may be provided with a plane or a circular arc surface or other shapes to adapt to the shape of the place where the first adapter tube 1 communicates with the valve chamber 51.

In order to improve the thrust effect of the refrigerant pushing the flow blocking structure 55 to move toward the direction close to the first connecting pipe 1, in an embodiment, as shown in fig. 4 to 6, the partition plate 556, the side wall of the guide seat 53, the inner wall of the sleeve, and the side wall of the guide seat 53, which is close to the partition plate 556, are enclosed to form the movable chamber 56, one or both of the outer wall of the guide seat 53 and the inner wall of the movable sleeve 555 are provided with a flow guide groove 531, and the movable chamber 56 can communicate with the valve chamber 51 through the flow guide groove 531.

It should be noted that the volume of the "movable cavity 56" decreases or increases as the movable sleeve 555 moves along the outside of the spud toward or away from the spool valve assembly 52.

When the refrigerant has a tendency to flow from the valve chamber 51 to the first connection pipe 1, the refrigerant in the valve chamber 51 enters the movable chamber 56 through the guiding groove 531, so that the pressure action on the end surface of the partition plate 556 far away from the first connection pipe 1 is greater than the pressure action on the end surface of the partition plate 556 close to the first connection pipe 1. Further, the pressure applied to the end surface of the partition plate 556 far from the first connecting pipe 1 is greater than the pressure applied to the end surface of the partition plate 556 near the first connecting pipe 1. Therefore, the partition 556 moves toward the direction close to the first connection pipe 1 due to the pressure difference between the two end surfaces, and blocks the first connection pipe 1 and the valve chamber 51. Therefore, due to the arrangement, the thrust action on one side of the flow resisting structure 55 departing from the first connecting pipe 1 is greatly improved, the rate of the flow resisting structure 55 for separating the first connecting pipe 1 and the valve cavity 51 is further improved, and the refrigerant backflow is effectively prevented.

In one embodiment, the guiding groove 531 is disposed on the inner wall of the movable sleeve 555 to communicate the movable chamber 56 and the valve chamber 51.

In one embodiment, the guiding groove 531 is disposed on the outer wall of the guiding seat 53 to communicate the movable chamber 56 and the valve chamber 51.

In another embodiment, the guiding grooves 531 are respectively disposed on the inner wall of the movable sleeve 555 and the outer wall of the guiding seat 53, and the guiding grooves 531 disposed on the inner wall of the movable sleeve 555 and the guiding grooves 531 disposed on the outer wall of the guiding seat 53 cooperate to form a guiding passage to communicate the movable cavity 56 and the valve cavity 51.

In another embodiment, the guiding grooves 531 are respectively disposed on the inner wall of the movable sleeve 555 and the outer wall of the guiding seat 53, and the guiding grooves 531 disposed on the inner wall of the movable sleeve 555 and the guiding grooves 531 disposed on the outer wall of the guiding seat 53 are staggered.

But not limited thereto, the guiding grooves 531 may also be in other arrangement forms, which are not listed here.

In one embodiment, as shown in fig. 6, the guiding grooves 531 penetrate through two opposite end surfaces of the guiding seat 53 along the axial direction of the movable sleeve 555. With such an arrangement, the flow guide groove 531 is easier to machine and the flow guide groove 531 is more unobstructed, so that the refrigerant in the valve cavity 51 can conveniently enter the movable cavity 56 through the flow guide groove 531.

In an embodiment, as shown in fig. 6, the number of the guide grooves 531 is plural, and the plural guide grooves 531 are uniformly distributed along the circumferential direction of the guide seat 53. Thus, the refrigerant in the valve chamber 51 can uniformly enter the movable chamber 56 along different circumferential directions of the guide seat 53, so that the pressure intensity applied to the end surface of one side of the partition plate 556 close to the movable chamber 56 is more uniform, and the flow blocking structure 55 can move towards the first connecting pipe 1 more stably.

In one embodiment, as shown in fig. 4, a protruding strip 556a is provided on an end surface of the partition plate 556 near the guide seat 53, the protruding strip 556a, the movable sleeve 555 and the partition plate 556 enclose one or more grooves 557, and the grooves 557 are communicated with the valve cavity 51 through the guiding grooves 531. When the first connecting pipe 1 is communicated with the valve cavity 51, the partition plate 556 is abutted against the two end faces of the positioning seat which are close to each other, and the movable cavity 56 is in a negative pressure state. Through setting up sand grip 556a at baffle 556 near the one side terminal surface of guide holder 53 for in more gas got into recess 557, make the pressure increase in the activity chamber 56, and then when the refrigerant got into activity chamber 56 along guiding gutter 531, promote baffle 556 more easily and remove towards the direction that is close to first takeover 1, two terminal surfaces that also are convenient for baffle 556 and positioning seat and are close to each other are separated.

In one embodiment, as shown in fig. 6, the guide seat 53 is provided with a plurality of guide grooves 531 in the circumferential direction. The raised strips 556a are separated to form a plurality of grooves 557, and the grooves 557 are correspondingly communicated with one or more flow guide grooves 531. In the moment that the two end faces of the partition plate 556 and the guide seat 53 are close to each other are separated, the refrigerant enters the groove 557 through the flow guide groove 531 and pushes the partition plate 556 to move towards the direction close to the first connecting pipe 1, so that the thrust action on one side of the flow resisting structure 55 departing from the first connecting pipe 1 is greatly improved, the rate of the flow resisting structure 55 for separating the first connecting pipe 1 and the valve cavity 51 is further improved, and the refrigerant backflow is effectively prevented.

Further, in order to make the refrigerant flowing into each of the grooves 557 more uniform, in an embodiment, the guide seat 53 is provided with a plurality of guide grooves 531 in the circumferential direction, the partition plate 556 is partitioned by the convex strips 556a to form a plurality of grooves 557, and the number of the grooves 557 corresponding to each of the guide grooves 531 is equal.

To enhance the structural strength of the flow blocking structure 55, in one embodiment, the baffles 556, the ribs 556a and the movable sleeve 555 are formed as a single piece. The partition 556, the ribs 556a and the movable sleeve 555 may be cast or turned.

In order to facilitate the refrigerant to enter the movable chamber 56, in an embodiment, as shown in fig. 4, a notch 555a is formed at an end of the movable sleeve 555, which is away from the partition 556, and the valve chamber 51 can communicate with the movable chamber 56 through the notch 555 a. In this way, when the flow blocking structure 55 moves toward the direction close to the first connecting pipe 1, the refrigerant in the valve chamber 51 can rapidly enter the movable chamber 56 from the notch 555 a. In addition, the notch 555a reduces the mass of the flow blocking structure 55, which is beneficial for the refrigerant to overcome the gravity of the flow blocking structure 55 to push the flow blocking structure 55 to move toward the direction close to the first connecting pipe 1, so as to separate the first connecting pipe 1 from the valve chamber 51.

In order to increase the force bearing area of the end surface of the partition 556 facing away from the first connecting pipe 1, in an embodiment, the partition 556 protrudes from the outer side surface of the movable sleeve 555 along the radial direction of the movable sleeve 555 to form a pressure bearing protrusion 556b. The pressure bearing protrusion 556b increases the force bearing area of the end surface of one side of the partition plate 556 departing from the first connecting pipe 1, and further increases the pressure on the end surface of one side of the flow blocking structure 55 close to the guide seat 53. And then the rate of the flow blocking structure 55 for blocking the first connecting pipe 1 and the valve cavity 51 is improved, and the refrigerant backflow is effectively prevented.

In order to further increase the force-bearing area of the choke structure 55 near one side end surface of the guide seat 53, in an embodiment, as shown in fig. 3, the depth of the movable sleeve 555 is smaller than the length of the guide seat 53 along the axial direction of the movable sleeve 555. Thus, when the movable sleeve 555 is sleeved outside the guide seat 53, a gap is formed between the bottom wall of the movable sleeve 555 near one side of the guide seat 53 and the sliding valve assembly 52, and the refrigerant in the valve cavity 51 can enter the gap and act on the bottom wall of the movable sleeve 555 near one side of the guide seat 53. In this way, the pressure applied to the end surface of the choke structure 55 near the guide seat 53 is further increased. The refrigerant can quickly push the flow blocking structure 55 to move towards the direction close to the first connecting pipe 1.

In the technical field of heat exchange equipment, the four-way valve comprises a first valve body 6, a second valve body 7 and a main valve body 5 for connecting the first valve body 6 and the second valve body 7, the cross sections of the first valve body 6 and the main valve body 5 are different, and the cross sections of the second valve body 7 and the main valve body 5 are different, at the moment, the connection difficulty between the first valve body 6 and the main valve body 5 is large, and similarly, the connection difficulty between the second valve body 7 and the main valve body 5 is large.

In order to solve the problem that the difficulty of connecting the first valve body 6 and the main valve body 5 is large and the difficulty of connecting the second valve body 7 and the main valve body 5 is large, the present application provides a four-way valve, specifically, as shown in fig. 7-12, the four-way valve includes a first valve body 6, a second valve body 7 and the main valve body 5 connecting the first valve body 6 and the second valve body 7, the first valve body 6 has a first hydraulic pressure chamber 61, the second valve body 7 has a second hydraulic pressure chamber 71, the main valve body 5 has a valve chamber 51, the first hydraulic pressure chamber 61, the valve chamber 51 and the second hydraulic pressure chamber 71 are sequentially communicated, the four-way valve further includes a spool assembly 52, the spool assembly 52 is movably disposed in the valve chamber 51, the refrigerant in the first hydraulic pressure chamber 61 and the refrigerant in the second hydraulic pressure chamber 71 can respectively push the spool assembly 52 to move so as to change the direction of the four-way valve, the four-way valve further includes a first connecting ring 64 and a second connecting ring 74, the first valve body 6 is connected to the main valve body 5 through the first connecting ring 64, and the second valve body 7 is connected to the main valve body 5 through the second connecting ring 74.

In this way, the shape and size of the first connection ring 64 can be set as required to fit the shape and size of the cross-section of the first valve body 6 and the main valve body 5 without changing the structure of the junction of the first valve body 6 and the main valve body 5, thereby simplifying the structure of the first valve body 6. Further, the connection mode of the first valve body 6, the first connecting ring 64 and the main valve body 5 can be set according to requirements, so that the connection difficulty of the first valve body 6 and the main valve body 5 is reduced. Also, the shape and size of the second connection ring 74 may be set as required to fit the shape and size of the cross-section of the second valve body 7 and the main valve body 5 without changing the structure of the junction of the second valve body 7 and the main valve body 5, thereby simplifying the structure of the second valve body 7. Further, the connection mode of the second valve body 7, the second connection ring 74 and the main valve body 5 can be set according to requirements, so that the connection difficulty of the first valve body 6 and the main valve body 5 is reduced.

To sum up, the four-way valve provided by the application solves the problems that the connection difficulty of the first valve body 6 and the main valve body 5 is large, and the connection difficulty of the second valve body 7 and the main valve body 5 is large

In order to make the connection between the first valve body 6 and the main valve body 5 more secure, in an embodiment, as shown in fig. 7-8, the first connecting ring 64 is sleeved outside the first valve body 6 and is fixedly connected with the first valve body 6, and the main valve body 5 is sleeved outside the first connecting ring 64 and is fixedly connected with the first connecting ring 64. With the arrangement, the contact area between the first connecting ring 64 and the first valve body 6 is increased, so that the first connecting ring 64 is connected with the first valve body 6 more firmly. And the contact area of the first connecting ring 64 and the main valve body 5 is increased, so that the first connecting ring 64 and the main valve body 5 are connected more firmly. In sum, the main valve body 5, the first connecting ring 64 and the first valve body 6 are arranged in a layer-by-layer sleeved manner, so that the main valve body 5, the first connecting ring 64 and the first valve body 6 are connected more firmly.

But not limited to this, the main valve body 5, the first connecting ring 64 and the first valve body 6 may also be connected by other sleeving methods.

Specifically, in another embodiment, as shown in fig. 13, the first connecting ring 64 is sleeved outside the main valve body 5 and fixedly connected to the main valve body 5, and the first valve body 6 is sleeved outside the first connecting ring 64 and fixedly connected to the first connecting ring 64.

Further, in order to enhance the sealing property of the connection of the first valve body 6 and the main valve body 5. In an embodiment, the first connection ring 64 is welded to the first valve body 6 and the main valve body 5, and the welded connection makes the sealing performance between the first valve body 6 and the main valve body 5 stronger, which is beneficial for the refrigerant in the first hydraulic chamber 61 to push the sliding valve assembly 52 to move, thereby facilitating the reversing of the four-way valve. However, the first connecting ring 64 may be screwed to the first valve body 6 and the main valve body 5, respectively.

In order to prevent the first connecting ring 64 from loosening at the connection with the main valve body 5, in one embodiment, as shown in fig. 8, the inner wall of the main valve body 5 is provided with a first limit step 57a, and the first connecting ring 64 is stopped at the first limit step 57a along the axial direction of the main valve body 5. In this manner, the first limit step 57a can limit the movement of the first connection ring 64 in the axial direction of the main valve body 5, thereby enhancing the firmness of the connection of the first connection ring 64 with the main valve body 5.

Further, the first limit step 57a and the end face of the first connection ring 64 close to one side of the main valve body 5 are welded, so that the firmness of the connection between the first connection ring 64 and the main valve body 5 is further enhanced.

In an embodiment, as shown in fig. 7 and 9, the first valve body 6 comprises a first main body section 62, the first hydraulic chamber 61 is provided in the first main body section 62, one end of the first main body section 62 extends into the first connecting ring 64 to connect with the main valve body 5, and the other end is provided with a first sealing section 63 to seal the opening of the first hydraulic chamber 61. Wherein, the first main body section 62 extends into the first connection ring 64 and is welded with the inner wall of the first connection ring 64 to enhance the strength of the connection position of the first valve body 6 and the first connection ring 64. But not limited thereto, the first body segment 62 may also be threaded or snapped onto the inner wall of the first attachment ring 64.

In order to prevent one end of the spool valve assembly 52 from directly striking the bottom wall of the first hydraulic chamber 61 when the four-way valve is reversed, in an embodiment, as shown in fig. 7 and 9, the inner wall of the first sealing section 63 is provided with a first step structure 631, and the first step structure 631 can stop one end of the spool valve assembly 52. Further, the sidewall of the first sealing section 63 forms the first step structure 631 by press-forming. But not limited thereto, the first step structure 631 may also be a protrusion provided at an inner wall of the first sealing section 63.

In order to enhance the sealing performance of the first valve body 6, in an embodiment, the first main body section 62 and the first sealing section 63 are an integral structure. Further, the first main body section 62 and the first sealing section 63 are turned or cast.

In order to make the connection between the second valve body 7 and the main valve body 5 more secure, in an embodiment, as shown in fig. 7 and 9, a second connection ring 74 is sleeved on the outer side of the second valve body 7 and is fixedly connected with the second valve body 7, and the main valve body 5 is sleeved on the outer side of the second connection ring 74 and is fixedly connected with the second connection ring 74. With this arrangement, the contact area of the second connection ring 74 with the second valve body 7 is increased, so that the connection of the second connection ring 74 with the second valve body 7 is more secure. And the contact area of the second connection ring 74 and the main valve body 5 is increased, so that the second connection ring 74 and the main valve body 5 are connected more firmly. In summary, the main valve body 5, the second connection ring 74 and the second valve body 7 are arranged in a layer-by-layer manner, so that the main valve body 5, the second connection ring 74 and the second valve body 7 are connected more firmly.

But not limited thereto, the main valve body 5, the second connection ring 74 and the second valve body 7 may also be connected by other sleeving means.

Specifically, in another embodiment, as shown in fig. 14, the second connection ring 74 is sleeved outside the main valve body 5 and is fixedly connected to the main valve body 5, and the second valve body 7 is sleeved outside the second connection ring 74 and is fixedly connected to the first connection ring 64.

Further, in order to enhance the sealing property of the connection between the second valve body 7 and the main valve body 5. In another embodiment, the second connection ring 74 is welded to the second valve body 7 and the main valve body 5, and the welded connection makes the second valve body 7 and the main valve body 5 more airtight, which is beneficial for the refrigerant in the second hydraulic chamber 71 to push the slide valve assembly 52 to move, thereby facilitating the reversing of the four-way valve. However, the second connection ring 74 may be screwed to the second valve body 7 and the main valve body 5, respectively.

In order to prevent the second connection ring 74 from loosening at the connection with the main valve body 5, in an embodiment, as shown in fig. 10, the inner wall of the main valve body 5 is provided with a second limit step 57b, and the second connection ring 74 stops at the second limit step 57b along the axial direction of the main valve body 5. In this way, the second limit step 57b can limit the movement of the second connection ring 74 in the axial direction of the main valve body 5, thereby enhancing the firmness of the connection of the second connection ring 74 with the main valve body 5.

Further, the second limit step 57b is welded to the end face of the second connection ring 74 on the side close to the main valve body 5, so that the connection firmness of the second connection ring 74 and the main valve body 5 is further enhanced.

In an embodiment, as shown in fig. 7 and 9, the second valve body 7 comprises a second main body section 72, the second hydraulic chamber 71 is provided in the second main body section 72, one end of the second main body section 72 extends into a second connection ring 74 to connect with the main valve body 5, and the other end is provided with a second sealing section 73 to seal the opening of the second hydraulic chamber 71. Wherein, the second body segment 72 extends into the first connection ring 64 and is welded with the inner wall of the first connection ring 64 to enhance the strength of the connection between the first valve body 6 and the first connection ring 64. But not limited thereto, the second body segment 72 may also be threaded or snapped onto the inner wall of the second attachment ring 74.

In order to prevent the other end of the spool valve assembly 52 from directly striking the bottom wall of the second hydraulic chamber 71 when the four-way valve is reversed, in an embodiment, as shown in fig. 7 and 9, the inner wall of the second sealing section 73 is provided with a second step structure 731, and the second step structure 731 can stop against the other end of the spool valve assembly 52. So configured, it is advantageous to avoid the other end of the spool valve assembly 52 from directly impacting the bottom wall of the second hydraulic chamber 71. Further, the side wall of the second sealing section 73 is formed into the second step structure 731 by press-forming. But not limited thereto, the second step structure 731 may also be a protrusion provided at an inner wall of the second sealing section 73.

To enhance the sealing of the second valve body 7, in one embodiment, the second body section 72 and the second sealing section 73 are of an integrally formed structure. Further, the second body section 72 and the second sealing section 73 are turned or cast.

In an embodiment, as shown in fig. 7 and 9, the sliding valve assembly 52 includes a first piston 521, a second piston 522, a sliding block 523 and a guide frame 524 connecting the first piston 521 and the second piston 522, the sliding block 523 is embedded in the guide frame 524, and the refrigerant can respectively push the guide frame 524 through the first piston 521 or the second piston 522 to drive the sliding block 523 to move in the valve cavity 51. In the four-way valve reversing process, the refrigerant in the first hydraulic chamber 61 pushes the guide frame 524 to drive the slider 523 to move in the valve chamber 51 through the first piston 521. Similarly, the refrigerant in the second hydraulic chamber 71 pushes the guide frame 524 to move the slider 523 in the valve chamber 51 through the second piston 522.

In order to improve the reversing speed and the reversing efficiency of the four-way valve, in one embodiment, as shown in fig. 7 and 9, the inner diameter of the first hydraulic chamber 61 is smaller than the inner diameter of the valve chamber 51, and the inner diameter of the second hydraulic chamber 71 is smaller than the inner diameter of the valve chamber 51. That is, the cross-sectional area of the first hydraulic chamber 61 is smaller than the cross-sectional area of the valve chamber 51, and the cross-sectional area of the second hydraulic chamber 71 is smaller than the cross-sectional area of the valve chamber 51. When the slide valve assembly 52 moves the same distance, the volume of the refrigerant forcibly discharged from the first hydraulic chamber 61 or the second hydraulic chamber 71 decreases. Therefore, the speed of the first valve body 6 or the second valve body 7 of the refrigerant flow is greatly improved, and the reversing speed and the reversing efficiency of the four-way valve are further greatly improved.

Generally, the four-way valve comprises a first connecting pipe 1, a second connecting pipe 2, a third connecting pipe 3 and a fourth connecting pipe 4, and the first connecting pipe 1, the second connecting pipe 2, the third connecting pipe 3 and the fourth connecting pipe 4 are all connected with a main valve body 5. And the first connecting pipe 1 is used for connecting the exhaust port of the compressor, the second connecting pipe 2 is used for connecting the evaporator, the third connecting pipe 3 is used for connecting the air suction port of the compressor, and the fourth connecting pipe 4 is used for connecting the condenser.

Further, in an embodiment, as shown in fig. 7 and 9, the side wall of the main valve body 5 is provided with a first connection port 58a, a second connection port 58b, a third connection port 58c, and a fourth connection port 58d. The first connection port 58a is provided with a first connection pipe 1, the second connection port 58b is provided with a second connection pipe 2, the third connection port 58c is provided with a third connection pipe 3, and the fourth connection port 58d is provided with a fourth connection pipe 4.

Further, the first connection port 58a is provided on one side of the main valve body 5, and the second connection port 58b, the third connection port 58c, and the fourth connection port 58d are provided on the other side of the main valve body 5 and are arranged along the axial direction of the main valve body 5. The slider 523 has an inner cavity 523a, and the third connection port 58c communicates with the second connection port 58b through the inner cavity 523a, or the third connection port 58c communicates with the fourth connection port 58d through the inner cavity 523 a.

Still further, a first valve seat 54 and a second valve seat 59 are provided in the main valve body 5. The first valve seat 54 is provided with a first through hole 541 corresponding to the first connection port 58 a. The second valve seat 59 is provided with a second through hole 591, a third through hole 592, and a fourth through hole 593 corresponding to the second, third, and fourth connection ports 58b, 58c, and 58d, respectively. The first connection pipe 1 sequentially passes through the first connection port 58a and the first through hole 541 to be communicated with the valve chamber 51, and the outer wall of the first connection pipe 1 is fixedly connected with the inner wall of the first valve seat 54 located in the first through hole 541, including but not limited to welding, clamping and screwing. The second connection pipe 2 is communicated with the valve cavity 51 through the second connection port 58b and the second through hole 591 in turn, and the outer wall of the second connection pipe 2 is fixedly connected with the inner wall of the second valve seat 59 in the second through hole 591, including but not limited to welding, clamping and screwing. The third connecting pipe 3 sequentially passes through the third connecting port 58c and the third through hole 592 to communicate with the valve cavity 51, and the outer wall of the third connecting pipe 3 is fixedly connected with the inner wall of the second valve seat 59 in the third through hole 592, including but not limited to welding, clamping and screwing. The fourth connection pipe 4 sequentially passes through the fourth connection port 58d and the fourth through hole 593 to be communicated with the valve chamber 51, and the outer wall of the fourth connection pipe 4 and the inner wall of the second valve seat 59 located in the fourth through hole 593 are fixedly connected, including but not limited to welding, clamping and threaded connection.

As shown in fig. 7 and 9, the four-way valve further includes a pilot valve 8, a first capillary tube 81, a second capillary tube 82, a third capillary tube 84, and a fourth capillary tube 83. Wherein, one end of the first capillary 81 is connected to the pilot valve 8, and the other end is connected to the first inserting hole at the side of the first connecting pipe 1 and communicated with the first connecting pipe 1; one end of the second capillary tube 82 is connected to the pilot valve 8, and the other end is connected to the second insertion hole at the side of the first sealing section 63 and communicated with the first hydraulic cavity 61; one end of the third capillary tube 84 is connected to the pilot valve 8, and the other end is connected to a third inserting hole at the side part of the third connecting pipe 3 and communicated with the third connecting pipe 3; one end of the fourth capillary 83 is connected to the pilot valve 8, and the other end is connected to a fourth plug hole at the side of the second sealing section 73 and communicated with the second hydraulic chamber 71.

The application provides a process that the cross valve heats the operating mode and switches with the refrigeration operating mode in air conditioning equipment, also the process that the cross valve commutates as follows:

a part of the high-pressure refrigerant from the compressor enters the valve cavity 51 through the first connecting pipe 1, the other part of the high-pressure refrigerant enters the pilot valve 8 from the first capillary tube 81, at this time, the pilot valve 8 is opened, and the pilot valve 8 controls the first capillary tube 81 to be communicated with the fourth capillary tube 83. Part of the refrigerant entering the first capillary tube 81 enters the second hydraulic chamber 71 through the fourth capillary tube 83, the high-pressure refrigerant pushes the second piston 522 to move toward the direction close to the valve chamber 51, the second hydraulic chamber 71 becomes larger, the second piston 522 drives the first piston 521 to move in the same direction through the guide frame 524 and compress the first hydraulic chamber 61 until the first piston 521 abuts against the end portion of the first valve body 6 close to the main valve body 5. At this time, the sliding block 523 moves to the second through hole 591 and the third through hole 592, the inner cavity 523a of the sliding block 523 is communicated with the second connecting pipe 2 and the third connecting pipe 3 through the second through hole 591 and the third through hole 592, the refrigerant entering the valve cavity 51 from the first connecting pipe 1 is discharged out of the four-way valve from the fourth connecting pipe 4, and sequentially flows through the outdoor heat exchanger, the throttling assembly and the compressor, thereby realizing the refrigeration cycle;

then, the pilot valve 8 is closed, the pilot valve 8 controls the first capillary tube 81 and the second capillary tube 82 to communicate, a part of the refrigerant entering the first capillary tube 81 enters the first hydraulic pressure chamber 61 through the second capillary tube 82, the high-pressure refrigerant pushes the first piston 521 to move toward the direction close to the valve cavity 51, the first hydraulic pressure chamber 61 is enlarged, the first piston 521 drives the second piston 522 to move in the same direction through the guide frame 524 and compress the second hydraulic pressure chamber 71 until the second piston 522 abuts against one side end of the second valve body 7 close to the main valve body 5. At this time, the slider 523 moves to the third through hole 592 and the fourth through hole 593, the inner cavity 523a of the slider 523 communicates with the third connecting pipe 3 and the fourth connecting pipe 4 through the third through hole 592 and the fourth through hole 593, and the refrigerant entering the valve chamber 51 from the first connecting pipe 1 is discharged out of the four-way valve from the second connecting pipe 2 and sequentially flows through the indoor heat exchanger, the throttle assembly, the outdoor heat exchanger, and the compressor, thereby realizing a heating cycle.

The application also provides an air conditioning device, which comprises the four-way valve in any one of the above embodiments.

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 express several implementation modes of the present application, and the description thereof is specific and detailed, but not construed as limiting the scope of the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims (10)

1. A four-way valve is characterized by comprising a first connecting pipe (1), a main valve body (5), a sliding valve assembly (52) and a guide seat (53), wherein a valve cavity (51) is arranged in the main valve body (5), the first connecting pipe (1) is connected with the main valve body (5) and communicated with the valve cavity (51), the sliding valve assembly (52) can move in the valve cavity (51) along the axial direction of the valve cavity (51), the guide seat (53) is arranged at one end, close to the first connecting pipe (1), of the sliding valve assembly (52),

be equipped with choked flow structure (55) in valve chamber (51), choked flow structure (55) including activity sleeve (555) and connect in activity sleeve (555) and be close to baffle (556) of first takeover (1) one end, choked flow structure (55) pass through activity sleeve (555) cover is located the outside of guide holder (53), just choked flow structure (55) pass through baffle (556) intercommunication or wall first takeover (1) with valve chamber (51).

2. The four-way valve according to claim 1, wherein the partition (556) is provided adjacent to a side wall of the guide seat (53), an inner wall of the sleeve and a side wall of the guide seat (53) adjacent to the partition (556) to form a movable chamber (56), one or both of an outer wall of the guide seat (53) and an inner wall of the movable sleeve (555) are provided with a flow guide groove (531), and the movable chamber (56) can communicate with the valve chamber (51) through the flow guide groove (531).

3. The four-way valve according to claim 2, wherein the guiding groove (531) penetrates through two opposite end faces of the guiding seat (53) along the axial direction of the movable sleeve (555);

and/or the guide grooves (531) are uniformly distributed along the circumferential direction of the guide seat (53).

4. The four-way valve according to claim 2, wherein a protruding strip (556 a) is disposed on one side end surface of the partition plate (556) close to the guide seat (53), the protruding strip (556 a), the sleeve and the partition plate (556) are surrounded to form one or more grooves (557), and the grooves (557) are communicated with the valve cavity (51) through the guiding grooves (531).

5. The four-way valve according to claim 4, wherein the guide seat (53) is circumferentially provided with a plurality of guide grooves (531), the plurality of ribs (556 a) partition the partition (556) into a plurality of grooves (557), and the grooves (557) are correspondingly communicated with one or more guide grooves (531).

6. The four-way valve of claim 4, wherein the barrier (556), the ribs (556 a), and the movable sleeve (555) are integrally formed.

7. The four-way valve according to claim 2, wherein a notch (555 a) is formed at one end of the movable sleeve away from the partition (556), and the valve cavity (51) can be communicated with the movable cavity (56) through the notch (555 a).

8. The four-way valve according to claim 1, wherein the barrier (556) protrudes from an outer side surface of the movable sleeve (555) in a radial direction of the movable sleeve (555) to form a pressure receiving protrusion (556 b).

9. The four-way valve according to claim 1, wherein the depth of the movable sleeve (555) is smaller than the length of the guide seat (53) in the axial direction of the movable sleeve (555).

10. An air conditioning apparatus comprising the four-way valve according to any one of claims 1 to 9.

Images