Four-way valve

Abstract

The utility model discloses a four-way valve which comprises a shell, the shell is provided with a cavity, a second communicating hole, a third communicating hole, a first communicating hole and a fourth communicating hole, the second communicating hole, the third communicating hole and the fourth communicating hole are communicated with the cavity, and the first communicating hole, the second communicating hole, the third communicating hole and the fourth communicating hole are sequentially distributed in the axial direction of the shell at intervals; the valve element is movably arranged in the cavity in the axial direction of the shell; the driving assembly is arranged on the shell, connected with the valve element and used for driving the valve element to move in the axial direction of the shell, the valve element is provided with a first position and a second position, and only the second communicating hole communicates with the third communicating hole at the first position; and at the second position, the second communicating hole is communicated with the first communicating hole, and the third communicating hole is communicated with the fourth communicating hole. According to the four-way valve disclosed by the utility model, rich runner change functions of the four-way valve can be realized by adjusting the position of the valve core in the cavity, different requirements of users are met, and the use experience of the users is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerant control elements, in particular to a four-way valve. Background Art

[0002] With the rapid development of the automobile industry, there are more and more devices and functions on the car. As a medium connecting multiple flow paths, valves are becoming more and more important in the production and manufacturing process of automobiles. In the related technology, four-way valves are widely used as a medium that can connect four flow paths at the same time. However, the four-way valves in the existing technology often have relatively single functional modes and are gradually unable to meet the needs of users. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a four-way valve, which can realize rich flow channel change functions of the four-way valve by adjusting the position of the valve core in the cavity, meet different needs of users, and thus improve the user experience.

[0004] According to an embodiment of the utility model, the four-way valve includes: a shell, the shell having a cavity and a first communicating hole, a second communicating hole, a third communicating hole and a fourth communicating hole connected to the cavity, the first communicating hole, the second communicating hole, the third communicating hole and the fourth communicating hole are arranged in sequence in the axial direction of the shell; a valve core, the valve core is movably arranged in the cavity along the axial direction of the shell; a driving assembly, the driving assembly is arranged on the shell and connected to the valve core, and is used to drive the valve core to move along the axial direction of the shell, the valve core has a first position and a second position, in the first position, only the second communicating hole and the third communicating hole are connected; in the second position, the first communicating hole and the second communicating hole are connected, and the third communicating hole and the fourth communicating hole are connected.

[0005] According to the four-way valve of the embodiment of the utility model, the valve core is driven by the driving component to move along the axial direction of the shell. When the valve core is in the first position, only the second connecting hole and the third connecting hole are connected. When the valve core is in the second position, the first connecting hole and the second connecting hole are connected, and the third connecting hole and the fourth connecting hole are connected. By adjusting the position of the valve core in the cavity, the connection state of the first connecting hole, the second connecting hole, the third connecting hole and the fourth connecting hole can be changed, and the mode switching of the first connecting hole and the second connecting hole, the second connecting hole and the third connecting hole, and the third connecting hole and the fourth connecting hole can be realized, so that the four-way valve can realize rich flow channel change functions, meet different needs of users, and thus improve the user experience.

[0006] In addition, the four-way valve according to the utility model may also have the following additional technical features:

[0007] In some embodiments, the outer peripheral wall of the valve core is provided with two annular protrusions extending along the circumferential direction of the valve core, and the two annular protrusions are spaced apart in the axial direction of the valve core. At least in the first position and the second position, the annular protrusions are sealed and connected to the inner wall of the cavity. Along the axial direction of the shell, in the first position, one of the two annular protrusions is located between the first connecting hole and the second connecting hole, and the other is located between the third connecting hole and the fourth connecting hole; in the second position, one of the two annular protrusions is located on the side of the first connecting hole away from the second connecting hole, and the other is located between the second connecting hole and the third connecting hole.

[0008] In some embodiments, at least in the first position and the second position, a sealing ring is provided between the outer peripheral wall of the annular protrusion and the inner peripheral wall of the cavity.

[0009] In some embodiments, the outer peripheral wall of the annular protrusion is provided with a groove, or the inner peripheral wall of the cavity is provided with a groove at a position opposite to the annular protrusion at the first position and the second position, and at least a portion of the sealing ring is disposed in the groove.

[0010] In some embodiments, the sealing ring includes an elastomer and a sealing block, the elastomer is located between the sealing block and the inner bottom wall of the groove, and the elasticity of the elastomer is greater than the elasticity of the sealing block.

[0011] In some embodiments, a matching groove is provided on a side of the sealing block facing the elastic body, and a portion of the elastic body is located in the matching groove.

[0012] In some embodiments, the driving assembly includes: a coil component and a rotor component, the coil component is sleeved outside the shell, the rotor component is arranged inside the shell, the coil component is located radially outside the rotor component and opposite to the rotor component, and is used to drive the rotor component to rotate; a screw rod, the screw rod is connected to the rotor component and rotates synchronously with the rotor component, one end of the screw rod in the length direction is connected to the valve core, and is used to drive the valve core to move along the axial direction of the shell.

[0013] In some embodiments, the four-way valve further includes: a positioning bracket, the positioning bracket being arranged on the shell and located on a side of the rotor component away from the valve core, the positioning bracket having a rotating hole, and the end of the screw rod facing away from the valve core being rotatably arranged in the rotating hole.

[0014] In some embodiments, the shell includes: a body, the coil component is sleeved outside the body, the rotor component and the screw are both arranged in the body, the body defines the cavity, the first connecting hole, the second connecting hole and the third connecting hole are all arranged on the peripheral wall of the body, and the fourth connecting hole is arranged on the axial end face of the body; a valve seat, the valve seat is arranged in the body and has a through hole, the screw is inserted into the through hole, and a bearing is arranged between the outer peripheral wall of the screw and the inner wall of the through hole.

[0015] In some embodiments, the shell further includes: a socket, which is disposed at one end of the main body where the fourth connecting hole is disposed, the socket has an interface, the interface is connected to the fourth connecting hole, the socket and the main body are an integral part or the socket and the main body are separate parts.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 is a cross-sectional view of a four-way valve according to an embodiment of the utility model, wherein the valve core is located at a first position;

[0019] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0020] Figure 3 It is a cross-sectional view of a four-way valve according to an embodiment of the utility model, wherein the valve core is located at the second position.

[0021] Reference numerals:

[0022] 100. Four-way valve;

[0023] 1. Shell; 11. Body; 110. Cavity; 111. First communication hole; 112. Second communication hole; 113. Third communication hole; 114. Fourth communication hole; 12. Valve seat; 121. Through hole; 13. Seat; 131. Interface;

[0024] 2. valve core; 21. annular protrusion; 211. groove; 22. sealing ring; 221. elastic body; 222. sealing block; 223. matching groove; 23. matching hole;

[0025] 3. Driving assembly; 31. Coil component; 32. Rotor component; 33. Screw; 331. Bearing;

[0026] 4. Positioning bracket; 41. Rotation hole. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] A four-way valve 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0032] like Figure 1 and Figure 3 As shown, the four-way valve 100 according to the embodiment of the utility model includes a housing 1, a valve core 2 and a drive assembly 3.

[0033] Specifically, refer to the attached Figure 1 and attached Figure 3 As shown, the housing 1 can protect the internal structure of the four-way valve 100, which is beneficial to prolonging the service life of the four-way valve 100. Figure 1 and attached Figure 3 As shown, the housing 1 has a cavity 110 and a first communicating hole 111, a second communicating hole 112, a third communicating hole 113 and a fourth communicating hole 114 communicating with the cavity 110. The first communicating hole 111, the second communicating hole 112, the third communicating hole 113 and the fourth communicating hole 114 are arranged in the axial direction of the housing 1 (see Appendix 1). Figure 1 They are arranged in sequence and spaced apart in the b direction shown in the figure.

[0034] Further, see Appendix Figure 1 and attached Figure 3 As shown, the valve core 2 is movably arranged in the cavity 110 along the axial direction of the shell 1, and the valve core 2 extends along the axial direction of the shell 1. The drive assembly 3 is arranged on the shell 1 and connected to the valve core 2, and is used to drive the valve core 2 to move along the axial direction of the shell 1.

[0035] Furthermore, the valve core 2 has a first position and a second position. In the first position, Figure 1 As shown, only the second communicating hole 112 and the third communicating hole 113 are connected, the first communicating hole 111 is not connected with the second communicating hole 112, the third communicating hole 113 and the fourth communicating hole 114, and the fourth communicating hole 114 is not connected with the first communicating hole 111, the second communicating hole 112 and the third communicating hole 113. The refrigerant flows into the cavity 110 from one of the second communicating hole 112 and the third communicating hole 113, and flows from the cavity 110 to the other of the second communicating hole 112 and the third communicating hole 113; in the second position, as shown Figure 3 As shown, the first communicating hole 111 is connected to the second communicating hole 112, and the third communicating hole 113 is connected to the fourth communicating hole 114. The refrigerant can flow into the cavity 110 from one of the first communicating hole 111 and the second communicating hole 112, and flow from the cavity 110 to the other of the first communicating hole 111 and the second communicating hole 112. The refrigerant can also flow into the cavity 110 from one of the third communicating hole 113 and the fourth communicating hole 114, and flow from the cavity 110 to the other of the third communicating hole 113 and the fourth communicating hole 114. It should be noted that in the second position, the first communicating hole 111 is not connected to the third communicating hole 113 and the fourth communicating hole 114, and the second communicating hole 112 is not connected to the third communicating hole 113 and the fourth communicating hole 114.

[0036] It can be understood that by adjusting the position of the valve core 2 in the cavity 110, the connection state of the first connecting hole 111, the second connecting hole 112, the third connecting hole 113 and the fourth connecting hole 114 can be changed, so that the mode switching of the first connecting hole 111 being connected to the second connecting hole 112, the second connecting hole 112 being connected to the third connecting hole 113, and the third connecting hole 113 being connected to the fourth connecting hole 114 can be realized, thereby realizing the rich flow channel change function of the four-way valve 100, meeting the different needs of users, and thus improving the user experience.

[0037] It should be noted that the four-way valve 100 of the present invention can be applied to air conditioning systems or thermal management systems, and the refrigerant can usually be CO2 (R744), R1234YF or R134A, as well as other conventional refrigerants.

[0038] According to the four-way valve 100 of the embodiment of the utility model, the valve core 2 is driven by the driving component 3 to move along the axial direction of the shell 1. When the valve core 2 is in the first position, only the second connecting hole 112 and the third connecting hole 113 are connected. When the valve core 2 is in the second position, the first connecting hole 111 and the second connecting hole 112 are connected, and the third connecting hole 113 and the fourth connecting hole 114 are connected. By adjusting the position of the valve core 2 in the cavity 110, the connection state of the first connecting hole 111, the second connecting hole 112, the third connecting hole 113 and the fourth connecting hole 114 can be changed, so as to realize the mode switching of the first connecting hole 111 and the second connecting hole 112, the second connecting hole 112 and the third connecting hole 113, and the third connecting hole 113 and the fourth connecting hole 114, so as to realize the rich flow channel change function of the four-way valve 100, meet the different needs of users, and thus improve the user experience.

[0039] In some embodiments of the present invention, refer to the attached Figure 1 and attached Figure 3 As shown, the outer peripheral wall of the valve core 2 is provided with two annular protrusions 21 extending along the circumferential direction of the valve core 2, and the two annular protrusions 21 are in the axial direction of the valve core 2 (refer to the attached Figure 1 The annular protrusion 21 is spaced apart in the direction b) as shown in the figure. At least in the first position and the second position, the annular protrusion 21 is sealedly connected to the inner wall of the cavity 110 to prevent the refrigerant from flowing through the gap between the annular protrusion 21 and the inner wall of the cavity 110, thereby ensuring the sealing effect of the four-way valve 100.

[0040] Along the axial direction of the housing 1, at the first position, refer to the attached Figure 1As shown, one of the two annular protrusions 21 is located between the first connecting hole 111 and the second connecting hole 112, and the other is located between the third connecting hole 113 and the fourth connecting hole 114. When the valve core 2 is in the first position, while ensuring the connection between the second connecting hole 112 and the third connecting hole 113, it can prevent the refrigerant flowing into the cavity 110 from the second connecting hole 112 and the third connecting hole 113 from flowing to the first connecting hole 111 or the fourth connecting hole 114, thereby ensuring the effectiveness of the four-way valve 100 when only the second connecting hole 112 and the third connecting hole 113 are connected.

[0041] In the second position, refer to the attached Figure 3 As shown, one of the two annular protrusions 21 is located on the side of the first communicating hole 111 away from the second communicating hole 112, and the other is located between the second communicating hole 112 and the third communicating hole 113. When the valve core 2 is in the second position, the arrangement of the two annular protrusions 21 divides the cavity 110 into two parts in the axial direction (see Appendix 1). Figure 1 The first sub-cavity, the second sub-cavity and the third sub-cavity are arranged in the direction b) as shown in the figure, the second sub-cavity is connected to the first connecting hole 111 and the second connecting hole 112, the third sub-cavity is connected to the third connecting hole 113 and the fourth connecting hole 114, and the two annular protrusions 21 are respectively used to isolate the first sub-cavity from the second sub-cavity and the second sub-cavity from the third sub-cavity, so as to prevent the refrigerant flowing into the second sub-cavity from the first connecting hole 111 and the second connecting hole 112 from flowing to the first sub-cavity or the third sub-cavity, and to prevent the refrigerant flowing into the third sub-cavity from the third connecting hole 113 and the fourth connecting hole 114 from flowing to the second sub-cavity.

[0042] In a further embodiment of the present invention, refer to the attached Figure 1 and attached Figure 3 As shown, at least in the first position and the second position, a sealing ring 22 is provided between the outer peripheral wall of the annular protrusion 21 and the inner peripheral wall of the cavity 110. The setting of the sealing ring 22 can prevent the refrigerant from flowing through the gap between the outer peripheral wall of the annular protrusion 21 and the inner peripheral wall of the cavity 110, thereby ensuring the sealing effect of the four-way valve 100 and ensuring the flow of the two connected connecting holes and the sealing of the unconnected connecting holes.

[0043] It can be understood that when the valve core 2 is in the first position, Figure 1 As shown, one of the two annular protrusions 21 is located between the first communicating hole 111 and the second communicating hole 112, and the sealing ring 22 plays a sealing role, so that the first communicating hole 111 is not connected with the second communicating hole 112, and the other of the two annular protrusions 21 is located between the third communicating hole 113 and the fourth communicating hole 114, and the sealing ring 22 plays a sealing role, so that the third communicating hole 113 is not connected with the fourth communicating hole 114; when the valve core 2 is in the second position, as shown Figure 3As shown, one of the two annular protrusions 21 is located on the side of the first connecting hole 111 away from the second connecting hole 112, and the sealing ring 22 plays a sealing role to prevent refrigerant leakage. The other of the two annular protrusions 21 is located between the second connecting hole 112 and the third connecting hole 113, and the sealing ring 22 plays a sealing role, so that the second connecting hole 112 and the third connecting hole 113 are not connected.

[0044] Further, see Attachment Figure 1 and attached Figure 3 As shown, when the valve core 2 switches between the first position and the second position, along the axial direction of the shell 1, one sealing ring 22 moves from one side of the first connecting hole 111 to the other side, and the other sealing ring 22 moves from one side of the third connecting hole 113 to the other side. Since the sealing ring 22 is an elastic member, the sealing ring 22 will expand in volume and deform when moving to the first connecting hole 111 or the third connecting hole 113. After passing through the first connecting hole 111 or the third connecting hole 113, it will be squeezed by the inner wall of the cavity 110 again and compressed by force, which can easily cause damage to the sealing ring 22, resulting in sealing failure and affecting the practical life of the four-way valve 100.

[0045] Therefore, a barrier is provided at the first communication hole 111 and the third communication hole 113, and the side of the barrier facing the cavity 110 is flush with the inner wall of the cavity 110, which can prevent the sealing ring 22 from deforming when passing through the first communication hole 111 and the third communication hole 113, so that the sealing ring 22 can pass through the first communication hole 111 and the third communication hole 113 more smoothly, and prevent the sealing ring 22 from scratching the hole wall when passing through the first communication hole 111 and the third communication hole 113, thereby reducing the probability of damage to the sealing ring 22, improving the reliability and stability of the seal, and extending the service life of the four-way valve 100. In addition, the barrier is provided with multiple spaced connection holes, and the setting of the connection holes can ensure the normal passage of the refrigerant and avoid affecting the normal function of the four-way valve 100.

[0046] In a further embodiment of the present invention, refer to the attached Figure 1 and attached Figure 3 As shown, a groove 211 is provided on the outer peripheral wall of the annular protrusion 21, or a groove 211 is provided on the inner peripheral wall of the cavity 110 at a first position and a second position opposite to the annular protrusion 21, and at least a portion of the sealing ring 22 is disposed in the groove 211. The setting of the groove 211 can position the sealing ring 22 to prevent the sealing ring 22 from moving along the axial direction of the shell 1, and the portion of the sealing ring 22 outside the groove 211 contacts the inner wall of the cavity 110 to achieve sealing.

[0047] Taking the groove 211 being provided on the outer peripheral wall of the annular protrusion 21 as an example, when the valve core 2 is in the first position, as shown in FIG. Figure 1As shown, one of the two annular protrusions 21 is located between the first communicating hole 111 and the second communicating hole 112, and the sealing ring 22 plays a sealing role, so that the first communicating hole 111 is not connected with the second communicating hole 112, and the other of the two annular protrusions 21 is located between the third communicating hole 113 and the fourth communicating hole 114, and the sealing ring 22 plays a sealing role, so that the third communicating hole 113 is not connected with the fourth communicating hole 114; when the valve core 2 is in the second position, as shown Figure 3 As shown, one of the two annular protrusions 21 is located on the side of the first connecting hole 111 away from the second connecting hole 112, and the sealing ring 22 plays a sealing role to prevent refrigerant leakage. The other of the two annular protrusions 21 is located between the second connecting hole 112 and the third connecting hole 113, and the sealing ring 22 plays a sealing role, so that the second connecting hole 112 and the third connecting hole 113 are not connected.

[0048] When the groove 211 is arranged on the inner wall of the cavity 110 at the first position and the second position opposite to the annular protrusion 21, the four grooves 211 are respectively the first groove, the second groove, the third groove and the fourth groove spaced apart along the axial direction of the shell 1. The first groove is located on the side of the first connecting hole 111 away from the second connecting hole 112, the second groove is located between the first connecting hole 111 and the second connecting hole 112, the third groove is located between the second connecting hole 112 and the third connecting hole 113, and the fourth groove is located between the third connecting hole 113 and the fourth connecting hole 114. Each groove 211 is provided with a sealing ring 22.

[0049] When the valve core 2 is in the first position, one of the two annular protrusions 21 is located between the first communicating hole 111 and the second communicating hole 112 and cooperates with the second groove, and the sealing ring 22 plays a sealing role, so that the first communicating hole 111 is not connected to the second communicating hole 112, and the other of the two annular protrusions 21 is located between the third communicating hole 113 and the fourth communicating hole 114 and cooperates with the fourth groove, and the sealing ring 22 plays a sealing role, so that the third communicating hole 113 is not connected to the fourth communicating hole 114; when the valve core 2 is in the second position, one of the two annular protrusions 21 is located on the side of the first communicating hole 111 away from the second communicating hole 112 and cooperates with the first groove, and the sealing ring 22 plays a sealing role to prevent refrigerant leakage, and the other of the two annular protrusions 21 is located between the second communicating hole 112 and the third communicating hole 113 and cooperates with the third groove, and the sealing ring 22 plays a sealing role, so that the second communicating hole 112 and the third communicating hole 113 are not connected.

[0050] In a further embodiment of the present invention, refer to the attached Figure 2 As shown in the attached reference Figure 1 and attached Figure 3The sealing ring 22 includes an elastic body 221 and a sealing block 222. The elastic body 221 is located between the sealing block 222 and the inner bottom wall of the groove 211. The elasticity of the elastic body 221 is greater than the elasticity of the sealing block 222. When the sealing ring 22 is installed, the elastic body 221 is connected to the sealing block 222 and installed together in the groove 211. The sealing block 222 is located outside the groove 211 and contacts the inner wall of the cavity 110. The elastic body 221 is always in a compressed state, driving the sealing block 222 to be in close contact with the inner wall surface of the cavity 110 to ensure the sealing performance. It can be understood that since the system pressure of the four-way valve 100 of the embodiment of the utility model is relatively high when used, if the sealing ring 22 only includes the elastic body 221, it is easy to come out of the groove 211 due to excessive pressure, and the addition of the sealing block 222 can play a role of fixing and supporting the elastic member.

[0051] Specifically, the elastomer 221 is a rubber part, for example, the elastic part can be a FKM (fluororubber) part or an EPDM (ethylene propylene diene monomer) part, which has excellent elasticity, corrosion resistance, aging resistance, low density and high filling property, and good sealing performance. The sealing block 222 is a PTFE (polytetrafluoroethylene) part, which has excellent stability, corrosion resistance and sealing property, and can play a role of fixed support to prevent the sealing ring 22 from falling out of the groove 211. Of course, the utility model is not limited to this, and the sealing block 222 can also be made of other harder and wear-resistant materials.

[0052] In a further embodiment of the present invention, refer to the attached Figure 2 As shown, a matching groove 223 is provided on one side of the sealing block 222 facing the elastic body 221, and part of the elastic body 221 is located in the matching groove 223, so that the connection between the elastic body 221 and the sealing block 222 can be more secure, and the limiting effect of the sealing block 222 on the elastic body 221 can be improved. For example, the cross section of the elastic body 221 can be spherical or ellipsoidal, and the matching groove 223 is a ball socket, triangle or rectangle that matches the shape of the elastic body 221.

[0053] In some embodiments of the present invention, refer to the attached Figure 1 and attached Figure 3 As shown, the driving assembly 3 includes a coil component 31, a rotor component 32 and a screw 33. The coil component 31 is sleeved outside the housing 1, and the rotor component 32 is arranged inside the housing 1. The coil component 31 is located on the radial outer side of the rotor component 32 and is opposite to the rotor component 32, and is used to drive the rotor component 32 to rotate. The screw 33 is connected to the rotor component 32 and rotates synchronously with the rotor component 32. The length direction of the screw 33 (refer to the attached Figure 1 One end (in the direction b) shown in the figure is connected to the valve core 2 and is used to drive the valve core 2 to move along the axial direction of the housing 1.

[0054] Specifically, refer to the attached Figure 1and attached Figure 3 As shown, the end face of the valve core 2 which is away from the fourth communication hole 114 is provided with a matching hole 23, and one end of the screw rod 33 which faces the valve core 2 extends into the matching hole 23 and is threadedly engaged with the matching hole 23. It can be understood that when the coil component 31 is energized, the coil component 31 drives the rotor component 32 to rotate, the screw rod 33 is welded to the rotor component 32, and the rotor component 32 drives the screw rod 33 to rotate together, and the screw rod 33 is threadedly engaged with the valve core 2, so that the screw rod 33 drives the valve core 2 to move along the axial direction of the housing 1.

[0055] In a further embodiment of the present invention, refer to the attached Figure 1 and attached Figure 3 As shown, the four-way valve 100 also includes a positioning bracket 4, which is arranged on the shell 1 and is located on the side of the rotor component 32 away from the valve core 2. The positioning bracket 4 has a rotating hole 41, and the end of the screw 33 facing away from the valve core 2 can be rotatably arranged in the rotating hole 41. The setting of the positioning bracket 4 can position the screw 33, avoid the deviation of the screw 33 when rotating, ensure centering, improve the reliability of the cooperation between the screw 33 and the valve core 2, and ensure that the screw 33 drives the valve core 2 to move along the axial direction of the shell 1.

[0056] In a further embodiment of the present invention, refer to the attached Figure 1 and attached Figure 3 As shown, the shell 1 includes a body 11 and a valve seat 12, the coil component 31 is sleeved outside the body 11, the rotor component 32 and the screw 33 are both arranged in the body 11, the body 11 defines a cavity 110, the first connecting hole 111, the second connecting hole 112 and the third connecting hole 113 are all arranged on the peripheral wall of the body 11, the fourth connecting hole 114 is arranged on the axial end surface of the body 11, the valve seat 12 is arranged in the body 11 and has a through hole 121, the screw 33 is penetrated in the through hole 121, and a bearing 331 is arranged between the outer peripheral wall of the screw 33 and the inner wall of the through hole 121. Since the valve seat 12 is connected to the body 11, the setting of the bearing 331 can ensure the normal rotation of the screw 33, can solve the problem of the screw 33 swinging during the rotation process, ensure the cooperation of the screw 33 and the valve core 2, thereby realizing the movement of the valve core 2 along the axial direction of the shell 1, and can facilitate the installation of the valve core 2.

[0057] In a further embodiment of the present invention, refer to the attached Figure 1 and attached Figure 3As shown, the shell 1 also includes a seat 13, which is arranged at one end of the main body 11 provided with a fourth connecting hole 114, and the seat 13 has an interface 131, which is connected to the fourth connecting hole 114, and the seat 13 and the main body 11 are an integral part or the seat 13 and the main body 11 are separate parts. When the seat 13 and the main body 11 are an integral part, the assembly process of the four-way valve 100 can be simplified and the assembly efficiency of the four-way valve 100 can be improved; when the seat 13 and the main body 11 are separate parts, the seat 13 and the main body 11 are welded and connected, which can facilitate the installation of the valve core 2 and the placement of the sealing ring 22, and reduce the difficulty of assembling the four-way valve 100.

[0058] It should be noted that the reference Figure 1 and attached Figure 3 As shown, three interfaces 131 may also be provided on the outer wall of the shell 1, and the three interfaces 131 are respectively connected to the second connecting hole 112, the third connecting hole 113 and the first connecting hole 111, and the four interfaces 131 are respectively connected to four refrigerant flow channels. The four-way valve 100 of the utility model can be applied to refrigeration systems and heating systems, and the interface 131 can be used to connect a compressor, a heat exchanger or other equipment. Of course, the utility model is not limited to this, and the interface 131 can also be connected to a battery or other components to meet different usage requirements.

[0059] In addition, when the groove 211 is arranged at the position of the inner peripheral wall of the cavity 110 opposite to the annular protrusion 21 at the first position and the second position, the four grooves 211 are respectively the first groove, the second groove, the third groove and the fourth groove spaced apart in the axial direction of the housing 1, the first groove is located on the side of the first connecting hole 111 away from the second connecting hole 112, the second groove is located between the first connecting hole 111 and the second connecting hole 112, the third groove is located between the second connecting hole 112 and the third connecting hole 113, and the fourth groove is located between the third connecting hole 113 and the fourth connecting hole 114, and each groove 211 is provided with a sealing ring 22. In order to reduce the difficulty of assembling the sealing ring 22, the body 11 can be designed as a split body, and multiple parts are arranged in the axial direction of the housing 1 to jointly constitute the body 11, and the multiple parts of the body 11 are welded and connected, so that the sealing ring 22 can be first installed in the corresponding groove 211, and then the multiple parts of the body 11 are welded and connected, which is convenient for placing the sealing ring 22.

[0060] Other structures and operations of the four-way valve 100 according to the embodiment of the utility model are known to those skilled in the art and will not be described in detail here.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0062] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A four-way valve, characterized in that: include: A shell (1), the shell (1) comprising a cavity (110) and a first communicating hole (111), a second communicating hole (112), a third communicating hole (113) and a fourth communicating hole (114) communicating with the cavity (110), the first communicating hole (111), the second communicating hole (112), the third communicating hole (113) and the fourth communicating hole (114) being arranged in sequence and spaced apart in an axial direction of the shell (1); a valve core (2), the valve core (2) being movably disposed in the cavity (110) along the axial direction of the housing (1); A drive assembly (3), the drive assembly (3) being arranged on the housing (1) and connected to the valve core (2), and being used for driving the valve core (2) to move along the axial direction of the housing (1), The valve core (2) has a first position and a second position. In the first position, only the second connecting hole (112) and the third connecting hole (113) are connected; in the second position, the first connecting hole (111) and the second connecting hole (112) are connected, and the third connecting hole (113) and the fourth connecting hole (114) are connected.

2. The four-way valve according to claim 1, characterized in that: The outer peripheral wall of the valve core (2) is provided with two annular protrusions (21) extending in the circumferential direction of the valve core (2), the two annular protrusions (21) are spaced apart in the axial direction of the valve core (2), and at least in the first position and the second position, the annular protrusions (21) are sealedly connected to the inner wall of the cavity (110), Along the axial direction of the housing (1), in the first position, one of the two annular protrusions (21) is located between the first connecting hole (111) and the second connecting hole (112), and the other is located between the third connecting hole (113) and the fourth connecting hole (114); in the second position, one of the two annular protrusions (21) is located on a side of the first connecting hole (111) away from the second connecting hole (112), and the other is located between the second connecting hole (112) and the third connecting hole (113).

3. The four-way valve according to claim 2, characterized in that: At least in the first position and the second position, a sealing ring (22) is provided between the outer peripheral wall of the annular protrusion (21) and the inner peripheral wall of the cavity (110).

4. The four-way valve according to claim 3, characterized in that: The outer peripheral wall of the annular protrusion (21) is provided with a groove (211), or the inner peripheral wall of the cavity (110) is provided with a groove (211) at a position opposite to the annular protrusion (21) at the first position and the second position, and at least a part of the sealing ring (22) is arranged in the groove (211).

5. The four-way valve according to claim 4, characterized in that: The sealing ring (22) comprises an elastic body (221) and a sealing block (222); the elastic body (221) is located between the sealing block (222) and the inner bottom wall of the groove (211); and the elasticity of the elastic body (221) is greater than the elasticity of the sealing block (222).

6. The four-way valve according to claim 5, characterized in that: A matching groove (223) is provided on one side of the sealing block (222) facing the elastic body (221), and a portion of the elastic body (221) is located in the matching groove (223).

7. The four-way valve according to claim 1, characterized in that: The driving assembly (3) comprises: A coil component (31) and a rotor component (32), wherein the coil component (31) is sleeved outside the housing (1), and the rotor component (32) is arranged inside the housing (1); the coil component (31) is located radially outside the rotor component (32) and opposite to the rotor component (32), and is used to drive the rotor component (32) to rotate; A screw rod (33), wherein the screw rod (33) is connected to the rotor component (32) and rotates synchronously with the rotor component (32), and one end of the screw rod (33) in the length direction is connected to the valve core (2) and is used to drive the valve core (2) to move along the axial direction of the housing (1).

8. The four-way valve according to claim 7, characterized in that: The four-way valve (100) further comprises: A positioning bracket (4), the positioning bracket (4) being arranged on the housing (1) and located on a side of the rotor component (32) away from the valve core (2), the positioning bracket (4) having a rotation hole (41), and an end of the screw rod (33) facing away from the valve core (2) being rotatably arranged in the rotation hole (41).

9. The four-way valve according to claim 7, characterized in that: The housing (1) comprises: A body (11), the coil component (31) is sleeved outside the body (11), the rotor component (32) and the screw (33) are both arranged inside the body (11), the body (11) defines the cavity (110), the first connecting hole (111), the second connecting hole (112) and the third connecting hole (113) are all arranged on the peripheral wall of the body (11), and the fourth connecting hole (114) is arranged on the axial end surface of the body (11); A valve seat (12), wherein the valve seat (12) is arranged in the body (11) and has a through hole (121), the screw rod (33) is inserted into the through hole (121), and a bearing (331) is arranged between the outer peripheral wall of the screw rod (33) and the inner wall of the through hole (121).

10. The four-way valve according to claim 9, characterized in that: The housing (1) further comprises: A socket (13), the socket (13) being arranged at one end of the main body (11) provided with the fourth connecting hole (114), the socket (13) having an interface (131), the interface (131) being connected to the fourth connecting hole (114), the socket (13) and the main body (11) being an integral part or the socket (13) and the main body (11) being separate parts.

Images