Two-position three-way valve

Abstract

The utility model discloses a two-position three-way valve which comprises a shell, a first valve element and a second valve element. The shell is provided with a first cavity, a communicating hole communicated with the first cavity, a first valve opening and a second valve opening. The valve element can move in the axial direction of the shell, and the valve element is provided with a sealing section so as to block the first valve port or the second valve port; the sealing section is sleeved with the first sealing ring and the second sealing ring, the first sealing ring and the second sealing ring are arranged at intervals in the axial direction of the sealing section, when the sealing section blocks the first valve port, the first sealing ring is located between the sealing section and the inner circumferential wall of the first valve port, and when the sealing section blocks the second valve port, the second sealing ring is located between the sealing section and the inner circumferential wall of the second valve port. The second sealing ring is positioned between the sealing section and the inner peripheral wall of the second valve port; the driving assembly is used for driving the valve element to move in the axial direction of the shell. The two-position three-way valve is miniaturized and light in weight, production cost can be reduced, use scenes can be expanded, assembly is convenient, plugging effectiveness can be guaranteed, and reliability and stability can be guaranteed.

Description

Technical Field

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

[0002] In existing new energy systems, an electromagnetic cut-off valve or a three-way electric ball valve is usually adopted to realize the switching of the refrigerant flow path. When an electromagnetic cut-off valve is adopted, two electromagnetic cut-off valves are often required to be used in combination. The electromagnetic cut-off valve product generally consists of two parts: a coil (solenoid) and an armature valve core. The product controls the separation and attraction of the armature by the power-off and power-on of the coil, thereby truncating and conducting the valve port, realizing the truncation of one and the conduction of the other or the conduction of one and the truncation of the other, and further realizing the switching of the refrigerant flow path. Due to the use characteristics of the electromagnetic cut-off valve product itself, two products need to be used in combination to realize the flow direction switching function, and the application scenario is relatively limited, and there are problems such as large layout space and heavy weight.

[0003] When a three-way electric ball valve is adopted, the electric ball valve generally consists of a driver, a reduction mechanism, a transmission mechanism and a ball valve. The stator coil of the driver (stepping motor) receives the pulse signal provided by the controller to drive the rotor magnetic ring to perform a rotational motion. After torque amplification by the reduction mechanism, the force is transmitted to the ball valve through the transmission mechanism, thereby rotating the valve core to realize the switching between the refrigerant flow paths. In a highly integrated product, due to the structural limitation of the existing ball valve itself, a relatively large torque is required to drive it normally. As the valve port size increases, the required driving torque also increases, and a larger driving coil or a larger reduction ratio is required to drive, resulting in a significant increase in cost; the built-in reduction mechanism is mostly a planetary gear set composed of micro gears. A large-caliber ball valve requires a relatively large torque to rotate, and the life and reliability of the micro gears have a relatively high risk of failure; the flow path of the ball valve itself is a straight-through linear type, and the linear adjustment of the flow rate cannot be realized; the ball valve itself is relatively large in size and heavy in weight, which is not conducive to the installation and use of the whole vehicle. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a two-way three-way valve, which is miniaturized and lightweight, can reduce the production cost, expand the use scenario, is convenient for assembly, and can ensure the effectiveness of plugging, and ensure the reliability and stability.

[0005] The two-way three-way valve according to an embodiment of the present utility model includes: a housing having a first cavity, a communication hole communicating with the first cavity, a first valve port, and a second valve port, the communication hole being provided on the peripheral wall of the housing, and the first valve port and the second valve port being respectively provided at two axial ends of the first cavity; a valve core provided in the housing and movable along the axial direction of the housing, the valve core having a sealing section that extends into the first cavity through the first valve port to block the first valve port or the second valve port; a first sealing ring and a second sealing ring sleeved on the sealing section and spaced apart in the axial direction of the sealing section, when the sealing section blocks the first valve port, the first sealing ring is located between the sealing section and the inner peripheral wall of the first valve port, and when the sealing section blocks the second valve port, the second sealing ring is located between the sealing section and the inner peripheral wall of the second valve port; a driving assembly provided on the housing and connected to the valve core for driving the valve core to move along the axial direction of the housing.

[0006] For the two-way three-way valve according to an embodiment of the present utility model, the driving assembly drives the valve core to move along the axial direction of the housing, so that the sealing section blocks the first valve port or the second valve port. By adjusting the position of the sealing section in the first cavity, the opening degrees of the first valve port and the second valve port can be changed, realizing the regulation and distribution of the flow rate. Thus, the rich flow channel change function of the two-way three-way valve can be achieved, a custom mode can be set to meet different needs of users and improve the user experience. Through the arrangement of the first sealing ring and the second sealing ring, the effectiveness of the sealing section in blocking the first valve port and the second valve port can be improved, ensuring the reliability and stability of the two-way three-way valve. Moreover, compared with the prior art, the two-way three-way valve of the present utility model does not need to be used in combination, can relatively reduce the occupied space, reduce the weight, realize the miniaturization and light weight of the two-way three-way valve, reduce the production cost, expand the use scenarios of the two-way three-way valve, and facilitate the assembly of the two-way three-way valve.

[0007] In addition, the two-way three-way valve according to the present utility model may further have the following additional technical features:

[0008] In some embodiments, one end of the inner peripheral wall of the first valve port close to the inside of the first cavity has a first guiding inclined surface, and in the direction from the first cavity to the first valve port, the first guiding inclined surface inclines towards the axis of the housing; and / or, one end of the inner peripheral wall of the second valve port close to the inside of the first cavity has a second guiding inclined surface, and in the direction from the first cavity to the second valve port, the second guiding inclined surface inclines towards the axis of the housing.

[0009] In some embodiments, one end of the valve core facing away from the second valve port has an anti-rotation hole, which is spaced apart from the axis of the valve core and extends along the axial direction of the housing. One end of the anti-rotation hole facing away from the second valve port is open. The two-way three-way valve further includes an anti-rotation pin, which is fixed in the housing and extends along the axial direction of the housing, and a part of the anti-rotation pin extends into the anti-rotation hole from the open end of the anti-rotation hole.

[0010] In some embodiments, the driving assembly includes a coil component and a rotor component. The coil component is sleeved outside the housing, and the rotor component is arranged inside the housing. The coil component is used to drive the rotor component to rotate. A screw, one end of the screw in the length direction is fixedly connected to the rotor component, and the other end is threadedly connected to the valve core. A bearing is arranged between the outer peripheral wall of the screw and the inner peripheral wall of the housing. The spring seat includes a body portion and a bent portion. The body portion is fixed on the housing and extends along the axial direction of the housing. At least part of the body portion penetrates into the rotor component, the screw penetrates into the body portion and is spaced apart from the inner wall of the body portion. The bent portion is arranged at one end of the body portion facing away from the second valve port, and the bent portion extends towards the radially inner side, and the screw penetrates into the bent portion.

[0011] In some embodiments, the housing further has a second cavity, and the second cavity and the first cavity are arranged in the axial direction of the housing. The rotor component is arranged in the second cavity. The valve core has a balance flow passage extending along the axial direction of the housing, and both ends of the balance flow passage along the axial direction of the housing are open.

[0012] In some embodiments, the screw has a mating section, the mating section penetrates into the balance flow passage and is threadedly connected to the balance flow passage. Along the length direction of the screw, the cross section of the mating section is arcuate or open-ring-shaped.

[0013] In some embodiments, the housing has a valve seat, and the valve core has a guiding section located on a side of the sealing section facing away from the second valve port. A third sealing ring is arranged between the outer peripheral wall of the guiding section and the inner peripheral wall of the valve seat.

[0014] In some embodiments, the outer diameter of the guiding section is S1, and the outer diameter of the sealing section is S2, and it satisfies: S1 = S2.

[0015] In some embodiments, the part of the valve seat that cooperates with the guiding section is a guiding portion, and one end of the inner peripheral wall of the guiding portion facing the first cavity has a third guiding inclined surface, and in the direction from the second valve port to the first valve port, the third guiding inclined surface inclines towards the axis of the housing.

[0016] In some embodiments, in the direction from the first valve port to the second valve port, the outer diameter of the valve seat gradually decreases.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a cross-sectional view of a two-way three-way valve according to an embodiment of the present utility model;

[0020] Figure 2 is a cross-sectional view of a part of a two-way three-way valve according to an embodiment of the present utility model;

[0021] Figure 3 is a perspective view of a part of a two-way three-way valve according to an embodiment of the present utility model;

[0022] Figure 4 is an exploded view of a part of a two-way three-way valve according to an embodiment of the present utility model;

[0023] Figure 5 is a cross-sectional view of the valve seat of a two-way three-way valve according to an embodiment of the present utility model;

[0024] Figure 6 is a perspective view of the screw and bearing cooperation of a two-way three-way valve according to an embodiment of the present utility model;

[0025] Figure 7 is an exploded view of the screw and bearing cooperation of a two-way three-way valve according to an embodiment of the present utility model;

[0026] Figure 8 is a cross-sectional view of the screw and bearing cooperation of a two-way three-way valve according to an embodiment of the present utility model;

[0027] Figure 9 is a perspective view of the cooperation of the first sealing ring, the second sealing ring and the valve core of a two-way three-way valve according to an embodiment of the present utility model;

[0028] Figure 10 is a cross-sectional view of the cooperation of the first sealing ring, the second sealing ring and the valve core of a two-way three-way valve according to an embodiment of the present utility model.

[0029] Reference numerals:

[0030] 100, two-way three-way valve;

[0031] 1. Housing; 11. First cavity; 12. Second cavity; 13. Communication hole; 14. First valve port; 141. First guiding inclined surface; 15. Second valve port; 151. Second guiding inclined surface; 16. Valve seat; 161. Guiding part; 162. Third guiding inclined surface; 163. Fourth sealing ring; 164. Fifth sealing ring; 165. Sixth sealing ring; 17. Third cavity; 171. Second communication hole; 18. Anti-rotation pin mounting cavity;

[0032] 2. Spool; 21. Sealing section; 22. Guiding section; 221. Third sealing ring; 23. Connecting section; 24. Anti-rotation hole; 25. Balanced flow channel;

[0033] 3. First sealing ring;

[0034] 4. Second sealing ring;

[0035] 5. Driving assembly; 51. Rotor component; 52. Screw; 521. Matching section; 53. Bearing; 54. Guide; 541. Eccentric hole; 55. Spring seat; 551. Body part; 552. Bent part; 553. Limit sliding groove; 56. Spring; 561. Helical section; 562. First extending section; 57. Slip ring; 571. Third extending section;

[0036] 6. Anti-rotation pin; 61. Fixed part; 62. Pin part. Detailed implementation mode

[0037] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0039] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.

[0040] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] The two-way three-way valve 100 according to an embodiment of the present utility model will be described below with reference to the accompanying drawings.

[0042] As Figure 1 shown, the two-way three-way valve 100 according to an embodiment of the present utility model includes a housing 1, a valve core 2, a first sealing ring 3, a second sealing ring 4, and a driving assembly 5.

[0043] Specifically, as Figure 1 shown, the housing 1 can protect the internal structure of the two-way three-way valve 100, which is beneficial to extending the service life of the two-way three-way valve 100. Further, as Figure 1 and Figure 2 shown, the housing 1 has a first cavity 11, a communication hole 13 communicating with the first cavity 11, a first valve port 14, and a second valve port 15. The communication hole 13 is provided on the peripheral wall of the housing 1, and the first valve port 14 and the second valve port 15 are respectively provided at the axial two ends of the first cavity 11.

[0044] Further, as Figure 1 and Figure 2 shown, the valve core 2 is arranged in the housing 1 and is movable along the axial direction of the housing 1 (the a direction shown in Figure 1 ). The valve core 2 has a sealing section 21. The sealing section 21 extends into the first cavity 11 through the first valve port 14 to block the first valve port 14 or the second valve port 15. The first sealing ring 3 and the second sealing ring 4 are sleeved on the sealing section 21 and in the axial direction of the sealing section 21 (the Figure 10They are arranged at intervals in the a direction (as shown). When the sealing section 21 seals the first valve port 14, the first sealing ring 3 is located between the sealing section 21 and the inner peripheral wall of the first valve port 14, which can prevent the refrigerant from flowing out of the two-way three-way valve 100 through the gap between the sealing section 21 and the inner peripheral wall of the first valve port 14, ensure the effectiveness of the sealing of the first valve port 14 by the sealing section 21, and ensure the reliability and stability of the two-way three-way valve 100. When the sealing section 21 seals the second valve port 15, the second sealing ring 4 is located between the sealing section 21 and the inner peripheral wall of the second valve port 15, which can prevent the refrigerant from flowing out of the two-way three-way valve 100 through the gap between the sealing section 21 and the inner peripheral wall of the second valve port 15, ensure the effectiveness of the sealing of the second valve port 15 by the sealing section 21, and ensure the reliability and stability of the two-way three-way valve 100. The driving assembly 5 is arranged on the housing 1 and connected to the valve core 2 for driving the valve core 2 to move along the axial direction of the housing 1.

[0045] It should be noted that under the drive of the driving assembly 5, the valve core 2 moves along the axial direction of the housing 1 so that the sealing section 21 seals the first valve port 14 or the second valve port 15. The settings of the first sealing ring 3 and the second sealing ring 4 can reduce the friction between the valve core 2 and the housing 1, reduce the wear of the valve core 2 and the housing 1, reduce the maintenance cost of the two-way three-way valve 100, and thus extend the service life of the two-way three-way valve 100.

[0046] It can be understood that under the drive of the driving assembly 5, the valve core 2 is axially movable along the housing 1. When the sealing section 21 seals the first valve port 14, the communication hole 13 and the second valve port 15 are in communication. The refrigerant flows into the first cavity 11 from one of the communication hole 13 and the second valve port 15 and flows from the first cavity 11 to the other of the communication hole 13 and the second valve port 15; when the sealing section 21 seals the second valve port 15, as Figure 1 and Figure 2 shown, the communication hole 13 and the first valve port 14 are in communication. The refrigerant flows into the first cavity 11 from one of the communication hole 13 and the first valve port 14 and flows from the first cavity 11 to the other of the communication hole 13 and the first valve port 14; when the sealing section 21 neither seals the first valve port 14 nor seals the second valve port 15, the communication hole 13, the first valve port 14 and the second valve port 15 are in communication with each other. By adjusting the position of the sealing section 21 in the first cavity 11, the opening degrees of the first valve port 14 and the second valve port 15 can be changed to realize the regulation and distribution of the flow rate, so that the rich flow channel change function of the two-way three-way valve 100 can be realized, a custom mode can be set to meet different needs of users and improve the user experience.

[0047] Compared with the electromagnetic cut-off valve and three-way electric ball valve used in the prior art, the two-way three-way valve 100 of the present utility model does not need to be used in combination, can relatively reduce the occupied space, reduce the weight, realize the miniaturization and light weight of the two-way three-way valve 100, reduce the production cost, expand the use scenarios of the two-way three-way valve 100, and facilitate the assembly of the two-way three-way valve 100.

[0048] For the two-way three-way valve 100 according to the embodiment of the present utility model, the valve core 2 is driven by the driving assembly 5 to move along the axial direction of the housing 1, so that the sealing section 21 blocks the first valve port 14 or the second valve port 15. By adjusting the position of the sealing section 21 in the first cavity 11, the opening degrees of the first valve port 14 and the second valve port 15 can be changed, so as to realize the regulation and distribution of the flow rate, and thus the rich flow channel change function of the two-way three-way valve 100 can be realized. A custom mode can be set to meet different needs of users and improve the user experience. Through the arrangement of the first sealing ring 3 and the second sealing ring 4, the effectiveness of the sealing section 21 in blocking the first valve port 14 and the second valve port 15 can be improved, and the reliability and stability of the two-way three-way valve 100 can be ensured. Moreover, compared with the prior art, the two-way three-way valve 100 of the present utility model does not need to be used in combination, can relatively reduce the occupied space, reduce the weight, realize the miniaturization and light weight of the two-way three-way valve 100, reduce the production cost, expand the use scenarios of the two-way three-way valve 100, and facilitate the assembly of the two-way three-way valve 100.

[0049] In some embodiments of the present utility model, referring to the attached Figure 5 As shown, one end of the inner peripheral wall of the first valve port 14 close to the inside of the first cavity 11 has a first guiding inclined surface 141. In the direction from the first cavity 11 to the first valve port 14, the first guiding inclined surface 141 inclines towards the axis of the housing 1. The setting of the first guiding inclined surface 141 can guide the first sealing ring 3, facilitate the movement of the first sealing ring 3, avoid damage to the first sealing ring 3 by the housing 1 during the movement of the valve core 2 along the axial direction of the housing 1, reduce the wear of the first sealing ring 3, extend the service life of the first sealing ring 3, and ensure the effectiveness and reliability of the two-way three-way valve 100.

[0050] Furthermore, referring to the attached Figure 5 As shown, one end of the inner peripheral wall of the second valve port 15 close to the inside of the first cavity 11 has a second guiding inclined surface 151. In the direction from the first cavity 11 to the second valve port 15, the second guiding inclined surface 151 inclines towards the axis of the housing 1. The setting of the second guiding inclined surface 151 can guide the second sealing ring 4, facilitate the movement of the second sealing ring 4, avoid damage to the second sealing ring 4 by the housing 1 during the movement of the valve core 2 along the axial direction of the housing 1, reduce the wear of the second sealing ring 4, extend the service life of the second sealing ring 4, and ensure the effectiveness and reliability of the two-way three-way valve 100.

[0051] Furthermore, referring to the attached Figure 2 and the attached Figure 5 As shown, the housing 1 further has a third cavity 17 and a second communication hole 171 communicating with the third cavity 17. The third cavity 17 is located on the side of the first cavity 11 away from the second valve port 15, and the first valve port 14 is used to communicate the first cavity 11 and the third cavity 17. The second communication hole 171 is provided on the peripheral wall of the housing 1 and on the side of the communication hole 13 away from the second valve port 15. The third cavity 17 is used to communicate the first valve port 14 and the second communication hole 171. When the sealing section 21 does not block the first valve port 14, the communication hole 13 communicates with the first valve port 14, and the refrigerant can flow into the first cavity 11 from the communication hole 13, flow from the first valve port 14 to the second cavity 12, and finally flow out from the second communication hole 171; the refrigerant can also flow into the second cavity 12 from the second communication hole 171, flow from the second valve port 15 to the first cavity 11, and finally flow out from the communication hole 13. It should be noted that the inner diameter of the first cavity 11 and the inner diameter of the third cavity 17 are both larger than the inner diameter at the first guiding inclined surface 141 and the inner diameter at the second guiding inclined surface 151.

[0052] In some embodiments of the present utility model, referring to the attached Figure 4 , the attached Figure 9 and the attached Figure 10 As shown, one end of the valve core 2 away from the second valve port 15 has an anti-rotation hole 24. The anti-rotation hole 24 is spaced apart from the axis of the valve core 2 and extends along the axial direction of the housing 1. One end of the anti-rotation hole 24 away from the second valve port 15 is open. The two-way three-way valve 100 further includes an anti-rotation pin 6. The anti-rotation pin 6 is fixed in the housing 1 and extends along the axial direction of the housing 1. A part of the anti-rotation pin 6 extends into the anti-rotation hole 24 from the open end of the anti-rotation hole 24. It can be understood that the setting of the anti-rotation pin 6 can prevent the valve core 2 from rotating relative to the housing 1 under the drive of the drive assembly 5, so that the valve core 2 can only move along the axial direction of the housing 1 and cannot rotate, preventing the valve core 2 from getting stuck during rotation, resulting in the valve core 2 rotating together with the drive assembly 5 instead of moving along the axial direction of the housing 1, thereby avoiding the failure of the two-way three-way valve 100 and ensuring the service life of the two-way three-way valve 100.

[0053] Furthermore, referring to the attached Figure 4 As shown, the housing 1 is provided with an anti-rotation pin installation cavity 18. The anti-rotation pin 6 is an integral part and includes a fixing part 61 and a pin part 62. The fixing part 61 is in interference fit with the anti-rotation pin installation cavity 18 and is connected by welding. The pin part 62 extends along the axial direction of the housing 1 and is connected to the side of the fixing part 61 facing the anti-rotation hole 24. The pin part 62 extends into the anti-rotation hole 24 from the open end of the anti-rotation hole 24. As the valve core 2 moves up and down, the length of the pin part 62 located in the anti-rotation hole 24 changes to a certain extent.

[0054] In some embodiments of the present utility model, referring to the attached Figure 1 As shown, the driving assembly 5 includes a coil component, a rotor component 51, a screw 52, a bearing 53, a guide member 54, a spring seat 55, a spring 56 and a slip ring 57. The coil component is sleeved outside the housing 1, the rotor component 51 is arranged inside the housing 1, the coil component and the rotor component 51 are arranged opposite to each other, and the coil component is used to drive the rotor component 51 to rotate. One end of the screw 52 in the length direction (direction a shown in the attached Figure 1 figure) is fixedly connected to the rotor component 51, and the other end is threadedly connected to the valve core 2. Combining Figure 6 and Figure 8 As shown, the bearing 53 is arranged between the outer peripheral wall of the screw 52 and the inner peripheral wall of the housing 1. The inner ring of the bearing 53 is in interference connection with the screw 52, and the outer ring is connected to the housing 1, thereby ensuring the normal rotation of the screw 52.

[0055] It can be understood that, as Figure 1 shown, when the coil component is energized, the coil component drives the rotor component 51 to rotate. Since the screw 52 is fixedly connected to the rotor component 51, the rotor component 51 drives the screw 52 to rotate together. The screw 52 and the valve core 2 are in threaded fit to form a thread pair. However, due to the arrangement of the anti-rotation pin 6, the valve core 2 cannot rotate together with the screw 52, so that the valve core 2 can only move along the axial direction of the housing 1 according to the threaded fit and cannot rotate.

[0056] Since the screw 52 is fixedly connected to the rotor component 51, the rotor component 51 drives the screw 52 to rotate together. The screw 52 and the valve core 2 are in threaded fit to form a thread pair. However, due to the arrangement of the anti-rotation pin 6, the valve core 2 cannot rotate together with the screw 52, so that the valve core 2 can only move along the axial direction of the housing 1 according to the threaded fit and cannot rotate, preventing the valve core 2 from being stuck due to excessive frictional force between the threads, resulting in the valve core 2 and the screw 52 rotating in place and not realizing axial displacement, leading to product failure.

[0057] In a further embodiment of the present utility model, referring to the attached Figure 1 figure, the guide member 54 is fixed inside the rotor component 51. The screw 52 passes through the guide member 54 and is welded to the guide member 54, so that the rotor component 51, the guide member 54 and the screw 52 rotate synchronously. An eccentric hole 541 is formed on the guide member 54.

[0058] Furthermore, referring to the attached Figure 2As shown, the spring seat 55 includes a body portion 551 and a bent portion 552. The body portion 551 is fixed to the housing 1 and extends along the axial direction of the housing 1. At least a part of the body portion 551 is disposed inside the rotor member 51. The screw 52 is disposed inside the body portion 551 and is spaced apart from the inner wall of the body portion 551. The bent portion 552 is disposed at one end of the body portion 551 facing away from the second valve port 15. The bent portion 552 extends toward the radially inner side. The screw 52 is disposed inside the bent portion 552. The setting of the bent portion 552 can reduce the distance between the spring seat 55 and the screw 52, play a limiting role on the screw 52, and prevent the screw 52 from shifting, thereby affecting the normal rotation of the screw 52 and the rotor member 51, ensuring the normal operation of the two-way three-way valve 100, and ensuring the reliability and stability of the two-way three-way valve 100. It should be noted that the body portion 551 is welded to the housing 1, and the body portion 551 abuts against the bearing 53, which can play a limiting role on the bearing 53 from one axial end of the bearing 53, and prevent the bearing 53 from moving axially (refer to the Figure 2 a direction shown).

[0059] Furthermore, with reference to Figure 1 and Figure 2 shown, a limiting chute 553 extending along the axial direction of the housing 1 is provided on the outer wall surface of the body portion 551. The spring 56 includes a helical section 561, a first extended section 562, and a second extended section. The helical section 561 is sleeved on the body portion 551. The first extended section 562 and the second extended section are respectively connected to both ends of the helical section 561. The first extended section 562 extends in a direction away from the second valve port 15. The first extended section 562 is connected to the guide member 54 and passes through the eccentric hole 541. The second extended section extends in a direction away from the first extended section 562. The spring 56 rotates synchronously with the rotor member 51. The slip ring 57 is sleeved on the body portion 551. The slip ring 57 has the same pitch and the same rotation direction as the spring 56. A third extended section 571 is provided at one end of the slip ring 57. The third extended section 571 extends toward the radially inner side and bends into the limiting chute 553. When the spring 56 rotates, the slip ring 57 moves relative to the spring 56 along the axial direction of the screw 52 (refer to the Figure 1 a direction shown), and the second extended section can play a limiting role on the third extended section 571.

[0060] It can be understood that, as Figure 1 shown, when the coil member is energized, the coil member drives the rotor member 51 to rotate. Through the connection between the first extended section 562 and the guide member 54, the entire spring 56 is driven to rotate. The helical portion can drive the slip ring 57 along the length direction of the limiting chute 553 (refer to the Figure 1Sliding in the a-direction shown, when the first protruding section 562 contacts the end of the slip ring 57 and the third protruding section 571 contacts the inner wall end face of the limit chute 553 near the guide member 54, the spring 56 stops rotating, thereby preventing the screw 52 from further rotating, reaching a stop state, and further causing the valve core 2 to no longer move upward; when the second protruding section contacts the third protruding section 571 and the third protruding section 571 contacts the inner wall end face of the limit chute 553 away from the guide member 54, the spring 56 stops rotating, preventing the screw 52 from further rotating, reaching a braking state, and further causing the valve core 2 to no longer move downward.

[0061] It should be noted that the number of turns of the slip ring 57 is greater than 1 and less than 2, which can ensure the normal function of the limiting effect of the slip ring 57 and avoid affecting the movable length of the valve core 2 due to the overlong slip ring 57.

[0062] In a further embodiment of the present utility model, referring to the attached Figure 1 As shown, the housing 1 further has a second cavity 12. The second cavity 12 and the first cavity 11 are arranged in the axial direction of the housing 1. The rotor component 51 is arranged in the second cavity 12. The valve core 2 has a balance flow channel 25 extending in the axial direction of the housing 1. Both ends of the balance flow channel 25 in the axial direction of the housing 1 are open. The refrigerant enters the balance flow channel 25 from one end of the balance flow channel 25 facing away from the rotor component 51 and flows along the balance flow channel 25 to the side of the valve core 2 facing away from the second valve port 15. The refrigerant can directly flow from the anti-rotation pin installation cavity 18 into the second cavity 12, or the refrigerant can also enter the inside of the spring seat 55 through the bearing 53 and finally enter the second cavity 12 through the gap between the bent portion 552 and the screw 52, so as to keep the air pressure in the second cavity 12 and the first cavity 11 consistent, ensure that the valve core 2 is always in a pressure balance state during the switching process, avoid affecting the normal movement of the valve core 2 in the axial direction of the housing 1, and ensure the reliability and stability of the sealing section 21 blocking the first valve port 14 and the second valve port 15.

[0063] In a further embodiment of the present utility model, referring to the attached Figure 2 、attached Figure 6 and attached Figure 7 As shown, the screw 52 has a mating section 521. The mating section 521 is disposed in the balance flow channel 25 and is threadedly connected to the inner wall of the balance flow channel 25. Along the length direction of the screw 52 (referring to the attached Figure 8The cross section of the matching section 521 is an arcuate or open ring, so that there is a certain gap between the matching section 521 and the inner peripheral wall of the balancing channel 25, so that the refrigerant in the balancing channel 25 can flow to the side of the valve core 2 away from the second valve port 15, and further keep the air pressure in the second cavity 12 consistent with that in the first cavity 11, so as to ensure that the valve core 2 is always in a pressure balance state during the switching process, avoid affecting the normal movement of the valve core 2 along the axial direction of the housing 1, and ensure the reliability and stability of the sealing section 21 in blocking the first valve port 14 and the second valve port 15. It should be noted that the open ring refers to an annular structure that is not completely closed.

[0064] In some embodiments of the present invention, refer to the attached Figure 2 , Attachment Figure 9 and attached Figure 10 As shown, the shell 1 has a valve seat 16, and the valve core 2 has a guide section 22. The guide section 22 is located on the side of the sealing section 21 away from the second valve port 15. A third sealing ring 221 is provided between the outer peripheral wall of the guide section 22 and the inner peripheral wall of the valve seat 16. The setting of the third sealing ring 221 can play a sealing role to prevent the refrigerant from flowing from the gap between the outer peripheral wall of the guide section 22 and the inner peripheral wall of the valve seat 16 to the second cavity 12, thereby ensuring the sealing effectiveness of the two-position three-way valve 100, and can reduce the friction between the valve core 2 and the valve seat 16 to a certain extent, reduce the wear of the valve core 2 and the valve seat 16, and reduce the maintenance cost of the two-position three-way valve 100, thereby extending the service life of the two-position three-way valve 100.

[0065] In a further embodiment of the present invention, refer to the attached Figure 10 As shown, the outer diameter of the guide section 22 is S1, the outer diameter of the sealing section 21 is S2, and S1=S2 is satisfied, which can facilitate the normal installation of the valve core 2, reduce the difficulty of installing the valve core 2, and reduce the difficulty of assembling the two-position three-way valve 100.

[0066] It should be noted that if Figure 10 As shown, the valve core 2 also includes a connecting section 23, and the two ends of the connecting section 23 along the axial direction of the shell 1 are respectively connected to the guide section 22 and the sealing section 21, and the guide section 22, the connecting section 23 and the sealing section 21 are arranged in sequence in the axial direction of the shell 1. The outer diameter of the connecting section 23 is S6, S6<S1=S2. It can be understood that when the sealing section 21 blocks the second valve port 15, part of the connecting section 23 is arranged opposite to the first valve port 14. By limiting S6<S1=S2, it can be ensured that the refrigerant flows between the connecting section 23 and the inner circumferential wall of the first valve port 14, thereby avoiding the connecting section 23 blocking the first valve port 14 and affecting the normal circulation of the refrigerant in the two-position three-way valve 100, thereby ensuring the reliability and stability of the two-position three-way valve 100.

[0067] In a further embodiment of the present invention, refer to the attachedFigure 5 As shown, the part of the valve seat 16 that cooperates with the guiding section 22 is the guiding portion 161. The inner diameter of the guiding portion 161 is S3, the inner diameter of the first valve port 14 is S4, and the inner diameter of the second valve port 15 is S5, and it satisfies: S3 = S4 = S5. This can ensure that during the switching process of the valve core 2, the inside of the two-way three-way valve 100 is always in a pressure balance state, reducing the influence on the valve core 2 due to the pressure difference, ensuring the effectiveness and reliability of the movement of the valve core 2, and ensuring the effectiveness of the sealing section 21 in blocking the first valve port 14 and the second valve port 15. It should be noted that a 5% tolerance is allowed between S3, S4, and S5. This can, while ensuring pressure balance, reduce the production and processing standards of the valve seat 16 and the production and processing difficulty of the valve seat 16.

[0068] In a further embodiment of the present utility model, referring to the attached Figure 5 As shown, the part of the valve seat 16 that cooperates with the guiding section 22 is the guiding portion 161. One end of the inner peripheral wall of the guiding portion 161 facing the first cavity 11 has a third guiding inclined surface 162. In the direction from the second valve port 15 to the first valve port 14, the third guiding inclined surface 162 inclines towards the axis of the housing 1. The setting of the third guiding inclined surface 162 can play a guiding role for the valve core 2, preventing the valve core 2 from getting stuck during the movement along the axial direction of the housing 1, facilitating the movement of the valve core 2, reducing the wear between the valve core 2 and the valve seat 16, extending the service life of the two-way three-way valve 100, and ensuring the effectiveness and reliability of the two-way three-way valve 100.

[0069] In a further embodiment of the present utility model, referring to the attached Figure 2 and the attached Figure 3 As shown, in the direction from the first valve port 14 to the second valve port 15, the outer diameter of the valve seat 16 gradually decreases, which can facilitate the assembly of the valve seat 16 to the required position, avoiding damage to the assembly position due to skewness during the assembly process, thereby affecting the sealing. For example, referring to the attached Figure 2 As shown, a fourth sealing ring 163 is sleeved on the outer peripheral wall of the valve seat 16 at the position opposite to the first valve port 14, a fifth sealing ring 164 is sleeved on the outer peripheral wall of the valve seat 16 at the position opposite to the second valve port 15, and a sixth sealing ring 165 is sleeved on the outer peripheral wall of the guiding portion 161 of the valve seat 16. The outer diameter of the position of the valve seat 16 where the fourth sealing ring 163 is provided is S7, the outer diameter of the position of the valve seat 16 where the fifth sealing ring 164 is provided is S8, and the outer diameter of the position of the guiding portion 161 where the sixth sealing ring 165 is provided is S9, and S9 ≥ S7 ≥ S8, which can ensure the sealing on both sides of the communication hole 13 along the axial direction of the housing 1 and ensure the sealing performance of the valve seat 16.

[0070] Other components and operations of the two-way three-way valve 100 according to the embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail here.

[0071] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0072] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A two-position three-way valve, characterized in that, Comprising: A housing (1), the housing (1) having a first cavity (11), a communication hole (13) communicating with the first cavity (11), a first valve port (14) and a second valve port (15), the communication hole (13) being provided on the peripheral wall of the housing (1), the first valve port (14) and the second valve port (15) being respectively provided at two axial ends of the first cavity (11); A valve core (2), the valve core (2) being provided in the housing (1) and movable along the axial direction of the housing (1), the valve core (2) having a sealing section (21), the sealing section (21) extending into the first cavity (11) through the first valve port (14) to block the first valve port (14) or the second valve port (15); A first sealing ring (3) and a second sealing ring (4), the first sealing ring (3) and the second sealing ring (4) being sleeved on the sealing section (21) and spaced apart in the axial direction of the sealing section (21), when the sealing section (21) blocks the first valve port (14), the first sealing ring (3) is located between the sealing section (21) and the inner peripheral wall of the first valve port (14), when the sealing section (21) blocks the second valve port (15), the second sealing ring (4) is located between the sealing section (21) and the inner peripheral wall of the second valve port (15); A driving assembly (5), the driving assembly (5) being provided on the housing (1) and connected to the valve core (2) for driving the valve core (2) to move along the axial direction of the housing (1).

2. The two-way three-way valve according to claim 1, wherein The inner peripheral wall of the first valve port (14) has a first guiding inclined surface (141) at one end close to the interior of the first cavity (11), in the direction from the first cavity (11) to the first valve port (14), the first guiding inclined surface (141) is inclined towards the axis of the housing (1); And / or, the inner peripheral wall of the second valve port (15) has a second guiding inclined surface (151) at one end close to the interior of the first cavity (11), in the direction from the first cavity (11) to the second valve port (15), the second guiding inclined surface (151) is inclined towards the axis of the housing (1).

3. The two-position three-way valve according to claim 1, characterized in that, One end of the valve core (2) facing away from the second valve port (15) has an anti-rotation hole (24), the anti-rotation hole (24) being spaced apart from the axis of the valve core (2) and extending along the axial direction of the housing (1), one end of the anti-rotation hole (24) facing away from the second valve port (15) is open, and the two-way three-way valve (100) further comprises: An anti-rotation pin (6), the anti-rotation pin (6) being fixed in the housing (1) and extending along the axial direction of the housing (1), a part of the anti-rotation pin (6) extending into the anti-rotation hole (24) from the open end of the anti-rotation hole (24).

4. The two-position three-way valve according to claim 1, characterized in that The driving assembly (5) comprises: A coil component and a rotor component (51), the coil component is sleeved outside the housing (1), the rotor component (51) is arranged inside the housing (1), and the coil component is used to drive the rotor component (51) to rotate; A screw (52), one end of the screw (52) in the length direction is fixedly connected to the rotor component (51), and the other end is threadedly connected to the valve core (2); A bearing (53), the bearing (53) is arranged between the outer peripheral wall of the screw (52) and the inner peripheral wall of the housing (1); A spring seat (55), the spring seat (55) includes a body portion (551) and a bent portion (552), the body portion (551) is fixed on the housing (1) and extends along the axial direction of the housing (1), at least part of the body portion (551) penetrates into the rotor component (51), the screw (52) penetrates into the body portion (551) and is spaced apart from the inner wall of the body portion (551), the bent portion (552) is arranged at one end of the body portion (551) facing away from the second valve port (15), the bent portion (552) extends towards the radially inner side, and the screw (52) penetrates into the bent portion (552).

5. The two-position three-way valve according to claim 4, wherein The housing (1) further has a second cavity (12), the second cavity (12) and the first cavity (11) are arranged in the axial direction of the housing (1), the rotor component (51) is arranged in the second cavity (12), the valve core (2) has a balance flow channel (25) extending along the axial direction of the housing (1), and both ends of the balance flow channel (25) in the axial direction of the housing (1) are open.

6. The two-way three-way valve according to claim 5, characterized in that, The screw (52) has a mating section (521), the mating section (521) penetrates into the balance flow channel (25) and is threadedly connected to the balance flow channel (25), and along the length direction of the screw (52), the cross section of the mating section (521) is arcuate or open-ring-shaped.

7. The two-position three-way valve according to claim 1, wherein, The housing (1) has a valve seat (16), the valve core (2) has a guiding section (22), the guiding section (22) is located on the side of the sealing section (21) facing away from the second valve port (15), and a third sealing ring (221) is arranged between the outer peripheral wall of the guiding section (22) and the inner peripheral wall of the valve seat (16).

8. The two-position three-way valve according to claim 7, characterized in that, The outer diameter of the guiding section (22) is S1, the outer diameter of the sealing section (21) is S2, and it satisfies: S1 = S2.

9. The two-position three-way valve according to claim 7, characterized in that, The part of the valve seat (16) that cooperates with the guiding section (22) is a guiding portion (161), and the inner peripheral wall of the guiding portion (161) has a third guiding inclined surface (162) at one end facing the first cavity (11). In the direction from the second valve port (15) to the first valve port (14), the third guiding inclined surface (162) is inclined towards the axis of the housing (1).

10. The two-position three-way valve according to claim 7, wherein, In the direction from the first valve port (14) to the second valve port (15), the outer diameter of the valve seat (16) gradually decreases.

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