Valve and fluid control assembly

Abstract

The valve comprises a valve seat assembly and a valve element assembly, the valve seat assembly comprises a valve element sleeve and a valve seat ring, the valve element sleeve is fixedly arranged on the peripheral side of the valve seat ring in a sleeving mode, a valve element cavity is formed in the valve element sleeve, the valve element sleeve is provided with at least two valve port parts, and at least part of the valve element assembly moves in the valve element cavity. Therefore, the corresponding valve port part is closed or opened. According to the valve and the fluid control assembly, the problem that the material cost of an electronic reversing valve is too high is solved.

Description

Technical Field

[0001] This application relates to the technical field of valves, and in particular to a valve and a fluid control assembly. Background Art

[0002] In the prior art, an electronic reversing valve includes a valve seat assembly. The valve seat assembly includes a valve seat ring connected to a sleeve. The valve core assembly of the electronic expansion valve moves along the inner wall of the chamber of the valve seat ring. When the valve core assembly has a relatively large size in the valve radial direction, the valve seat ring also needs to be machined with a relatively large size in the valve radial direction. At the same time, to ensure the movement of the valve core assembly, the valve seat ring also needs to be machined with a relatively large size in the valve axial direction. Therefore, the valve seat ring in the prior art has a large volume and high cost. How to reduce the volume of the valve seat ring to reduce the cost of the valve seat ring is the technical problem to be solved by this application. Summary of the Utility Model

[0003] Based on this, it is necessary to provide a valve and a fluid control assembly to solve the problem of excessive cost of the existing electronic reversing valve.

[0004] The valve provided by this application includes a valve seat assembly and a valve core assembly. The valve seat assembly includes a valve core sleeve and a valve seat ring. The valve core sleeve is fixedly sleeved on the outer peripheral side of the valve seat ring. A valve core cavity is provided in the valve core sleeve. The valve core sleeve has at least two valve orifice parts. At least part of the valve core assembly moves in the valve core cavity to close or open the corresponding valve orifice parts.

[0005] In one embodiment, the valve seat assembly further includes a sleeve. The valve seat ring and the sleeve are made of the same material, and the valve seat ring and the valve core sleeve are made of different materials.

[0006] In one embodiment, the valve core sleeve is made of aluminum alloy, and the valve seat ring and the sleeve are both made of stainless steel.

[0007] In one embodiment, the outer wall of the valve core sleeve and the inner wall of the valve seat ring are connected by interference fit, or the outer wall of the valve core sleeve and the inner wall of the valve seat ring are connected by threads.

[0008] In one embodiment, a third sealing ring is provided between the valve core sleeve and the valve seat ring. The third sealing ring is provided on the valve core sleeve, or the third sealing ring is provided on the valve seat ring.

[0009] In one embodiment, the inner side wall of the valve core sleeve is provided with a plurality of through holes spaced along the axial direction of the valve. The outer side wall of the valve core sleeve is provided with a plurality of spaced flow channel grooves. The flow channel grooves are in one-to-one correspondence and communication with the through holes, and the through holes are in communication with the valve core cavity.

[0010] In one embodiment, the valve seat assembly further includes a washer. The washer is connected to the end of the valve core sleeve away from the valve seat ring. The outer wall of the washer and the inner wall of the valve core sleeve are connected by interference fit; or the outer wall of the washer and the inner wall of the valve core sleeve are in threaded fit. Or the outer wall of the washer and the inner wall of the valve core sleeve are welded.

[0011] In one embodiment, the valve further includes a valve core assembly, which includes a main core body, an elastic member, a first throttle member, and a second throttle member. The first throttle member and the second throttle member are respectively used to open or close the valve orifice. An installation ring groove extending around its own axis is provided on the outer wall of the main core body. The installation ring groove includes a first side wall, a second side wall, and an installation bottom wall. The first side wall and the second side wall are arranged at both ends of the main core body along its own axis, and the installation bottom wall is arranged between the first side wall and the second side wall. The first throttle member, the elastic member, and the second throttle member are sequentially and movably sleeved on the installation bottom wall. The elastic member is always in a compressed state, and the elastic member can respectively provide elastic acting forces to the first throttle member and the second throttle member, so that the first throttle member has a tendency to press against the first side wall, and the second throttle member has a tendency to press against the second side wall.

[0012] In one embodiment, the valve orifice includes a first valve orifice, a second valve orifice, a third valve orifice, and a fourth valve orifice arranged in sequence. The first throttle member is used to seal the first valve orifice or the second valve orifice, and the second throttle member is used to seal the third valve orifice or the fourth valve orifice. After the second throttle member seals the fourth valve orifice, the main core body drives the first throttle member to slide a certain distance and then closes the second valve orifice; after the first throttle member seals the first valve orifice, the main core body drives the second throttle member to slide a certain distance and then closes the third valve orifice.

[0013] In one embodiment, the valve core assembly further includes a first gasket and a second gasket. The first gasket is movably sleeved on the outer peripheral side of the main core body and is arranged between the elastic member and the first throttle member. The second gasket is movably sleeved on the outer peripheral side of the main core body and is arranged between the elastic member and the second throttle member.

[0014] The present application also provides a fluid control assembly, which includes a valve seat assembly and a valve core assembly. The valve seat assembly includes a valve seat body, a valve core sleeve, and a valve seat ring. The valve seat body is fixedly sleeved on the outer peripheral side of the valve core sleeve, and the valve core sleeve is fixedly sleeved on the outer peripheral side of the valve seat ring. There is a gap between the valve seat ring and the valve seat body. Part of the valve core sleeve is located in the gap between the valve seat ring and the valve seat body. The valve core sleeve has at least two valve orifices. The valve core assembly moves along the inner wall of the valve core sleeve to close or open the corresponding valve orifices.

[0015] In one embodiment, the outer wall of the valve core sleeve and the inner wall of the valve seat body are in interference fit; or, the outer wall of the valve core sleeve and the inner wall of the valve seat body are in threaded fit.

[0016] In one embodiment, the valve seat body is provided with a seat cavity and a plurality of outer interfaces respectively communicating with the seat cavity. The valve core sleeve is fixedly connected to the inner wall of the seat cavity. A plurality of spaced flow channel grooves are provided on the outer peripheral side of the valve core sleeve, and the flow channel grooves communicate with the corresponding outer interfaces.

[0017] In one embodiment, the seat cavity includes a first cavity with a constant diameter along the entire axis, the flow channel groove is an annular structure arranged around the valve axis, and multiple flow channel grooves are all located in the first cavity.

[0018] In one embodiment, a first sealing ring is provided between the valve core sleeve and the valve seat body, and there is a flow channel groove between two adjacent first sealing rings.

[0019] Compared with the prior art, for the valve and the fluid control assembly provided by the present application, since the valve core sleeve is fixedly sleeved on the outer peripheral side of the valve seat ring, and the valve core assembly moves along the inner wall of the valve core sleeve, that is, part of the valve core sleeve replaces part of the valve seat ring in the prior art. Therefore, the size of the valve seat ring along the valve radial direction and the valve axial direction can be shortened, and the volume and cost of the valve seat ring can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of a valve according to an embodiment provided by the present application;

[0022] Figure 2 It is a cross-sectional view of a valve according to an embodiment provided by the present application;

[0023] Figure 3 It is a partial cross-sectional view of a valve core assembly according to an embodiment provided by the present application;

[0024] Figure 4 It is a partial structural schematic diagram of a valve core assembly according to an embodiment provided by the present application.

[0025] Reference Numerals: 100, rotor assembly; 200, lead screw; 300, sleeve; 400, valve core assembly; 410, main core body; 411, mounting ring groove; 412, first side wall; 413, second side wall; 414, mounting bottom wall; 420, elastic member; 430, first throttle member; 440, second throttle member; 450, first gasket; 460, second gasket; 500, valve seat assembly; 510, valve seat body; 511, external interface; 512, first interface; 513, second interface; 514, third interface; 515, fourth interface; 521, first valve port; 522, second valve port; 523, third valve port; 524, fourth valve port; 530, valve core sleeve; 531, flow channel groove; 540, valve seat ring; 550, washer; 560, first sealing ring; 570, second sealing ring; 580, third sealing ring; 590, fourth sealing ring; 600, stator assembly. Detailed Embodiment

[0026] Please refer to Figures 1-4 , the valve includes a stator assembly 600, a rotor assembly 100, a lead screw 200, a valve core assembly 400 and a valve seat assembly 500. The stator assembly 600 is used to cooperate with the rotor assembly 100 so that the rotor assembly 100 rotates around its own axis. One end of the lead screw 200 is fixedly connected to the rotor assembly 100, and the other end is connected to the valve core assembly 400, and the rotor assembly 100 can drive the lead screw 200 to drive the valve core assembly 400 to move axially relative to the valve seat assembly 500 along the lead screw 200.

[0027] Specifically, the valve further includes a sleeve 300, and the sleeve 300 covers the outside of the rotor assembly 100, a part of the lead screw 200 and a part of the valve core assembly 400 and is welded to the valve seat assembly 500.

[0028] The valve seat assembly 500 includes a valve seat body 510, a valve core sleeve 530 and a valve seat ring 540. The valve seat body 510 is fixedly sleeved on the outer peripheral side of the valve core sleeve 530, the valve core sleeve 530 is fixedly sleeved on the outer peripheral side of the valve seat ring 540, and the inside of the valve core sleeve 530 is a valve core cavity. The valve core sleeve 530 has at least two valve port parts, and at least part of the valve core assembly 400 moves in the valve core cavity to close or open the corresponding valve port parts. There is a gap between the valve seat ring 540 and the valve seat body 510, and part of the valve core sleeve 530 is located in the gap between the valve seat ring 540 and the valve seat body.

[0029] It should be noted that the valve core assembly 400 is provided with an internal balance hole to balance the hydraulic pressure on both sides of the valve core assembly 400 and reduce the difficulty of axial movement of the valve core assembly 400.

[0030] With such a setting, the valve seat ring 540 is indirectly connected to the valve seat body 510 through the valve core sleeve 530, and the valve core assembly 400 moves along the inner wall of the valve core sleeve 530. That is, part of the valve core sleeve 530 replaces part of the valve seat ring in the prior art. Therefore, the size of the valve seat ring 540 along the valve radial direction and the valve axial direction can be shortened, and the volume and cost of the valve seat ring 540 can be reduced.

[0031] In one embodiment, the valve seat assembly 500 further includes a washer 550, and the washer 550 is located in the valve seat body 510 and is connected to one end of the valve core sleeve 530 away from the valve seat ring 540.

[0032] The outer wall of the washer 550 and the inner wall of the valve core sleeve 530 are connected by interference fit; or, the outer wall of the washer 550 and the inner wall of the valve core sleeve 530 are in threaded fit; or, the outer wall of the washer 550 and the inner wall of the valve core sleeve 530 are welded.

[0033] Further, in one embodiment, the valve seat ring 540 and the sleeve 300 are made of the same material, and the valve seat ring 540 and the valve core sleeve 530 are made of different materials.

[0034] Specifically, in one embodiment, the sleeve 300 is made of stainless steel, the valve seat ring 540 is welded to the sleeve 300, and the valve seat ring 540 is made of stainless steel. The outer wall of the valve core sleeve 530 and the inner wall of the valve seat body 510 are connected by interference fit or threaded connection. Therefore, the valve core sleeve 530 does not need to be made of the same stainless steel material as the valve seat ring 540. The valve core sleeve 530 and the washer 550 can be made of aluminum alloy with a lower cost than stainless steel. Therefore, the overall cost of the valve seat assembly in this application can be reduced.

[0035] In one embodiment, the outer wall of the valve core sleeve 530 and the inner wall of the valve seat ring 540 are connected by interference fit, or the outer wall of the valve core sleeve 530 and the inner wall of the valve seat ring 540 are in threaded connection.

[0036] In one embodiment, as Figure 2 shown, the outer wall of the valve core sleeve 530 and the inner wall of the valve seat body 510 are in interference fit, and a first sealing ring 560 is provided between the valve core sleeve 530 and the valve seat body 510 to block the connection gap between the valve core sleeve 530 and the valve seat body 510.

[0037] In another embodiment, the outer wall of the valve core sleeve 530 and the inner wall of the valve seat body 510 are in threaded fit. That is, the external thread on the outer wall of the valve core sleeve 530 and the internal thread on the inner wall of the valve seat body 510 are screwed together.

[0038] However, it is not limited to this. In other embodiments, the valve core sleeve 530 and the valve seat body 510 can also be in snap-fit or other ways of limiting fit.

[0039] In one embodiment, as Figure 2As shown, the outer wall of the gasket 550 and the inner wall of the valve seat body 510 are fixedly crimped and welded, and a second sealing ring 570 is provided between the gasket 550 and the valve seat body 510 to separate the connection gap between the gasket 550 and the valve seat body 510.

[0040] In another embodiment, the outer wall of the gasket 550 and the inner wall of the valve seat body 510 are threadedly matched. That is, the outer thread of the outer wall of the gasket 550 and the inner thread of the inner wall of the valve seat body 510 are threadedly matched.

[0041] However, it is not limited thereto. In other embodiments, the gasket 550 and the valve seat body 510 may also be snap-fitted, threadedly fit, or fit in other limited ways.

[0042] In one embodiment, if Figure 2 As shown, the outer wall of the valve seat ring 540 and the inner wall of the valve core sleeve 530 are interference fit, and a third sealing ring 580 is provided between the valve core sleeve 530 and the valve seat ring 540 to cut off the connection gap between the valve core sleeve 530 and the valve seat ring 540. The third sealing ring 580 is provided on the valve core sleeve 530, or the third sealing ring 580 is provided on the valve seat ring 540.

[0043] In another embodiment, the inner wall of the valve core sleeve 530 and the outer wall of the valve seat ring 540 are threadedly matched. That is, the internal thread of the inner wall of the valve core sleeve 530 and the external thread of the outer wall of the valve seat ring 540 are threadedly matched.

[0044] However, it is not limited thereto. In other embodiments, the valve core sleeve 530 and the valve seat ring 540 may also be snap-fitted or otherwise position-limited.

[0045] In one embodiment, a fourth sealing ring 590 is further provided on the outer peripheral side of the valve core assembly 400 close to one end of the screw rod 200 , and the valve core assembly 400 is movably sealed with the inner wall of the valve seat body 510 through the fourth sealing ring 590 .

[0046] In one embodiment, if Figure 2 As shown, the valve seat body 510 is provided with a seat cavity and a plurality of external interfaces 511 respectively connected to the seat cavities, the valve core sleeve 530 is fixedly connected to the inner wall of the seat cavity, the valve core sleeve 530 has a valve core cavity inside, and the outer peripheral side of the valve core sleeve 530 is provided with a plurality of spaced flow grooves 531, which connect the valve core cavity and the corresponding external interfaces 511.

[0047] In this way, the flow channel groove 531 is arranged on the outer wall of the valve core sleeve 530 instead of being arranged on the inner wall of the valve seat body 510, which is beneficial to reduce the processing difficulty of the flow channel groove 531 and improve the processing efficiency of the valve.

[0048] In one embodiment, the seat cavity includes a first cavity with an equal diameter (the diameter is equal at all axial positions). The flow channel groove 531 is an annular structure arranged around the valve axis. A plurality of flow channel grooves 531 are all located in the first cavity, and there is one flow channel groove 531 between two adjacent first sealing rings 560.

[0049] In one embodiment, a plurality of through holes are provided on the inner side wall of the valve core sleeve 530 at intervals along the axial direction of the valve. The flow channel grooves 531 communicate with the through holes in a one-to-one correspondence, and the through holes communicate with the valve core cavity.

[0050] In one embodiment, as Figure 3 and Figure 4 shown, the valve core assembly 400 includes a main core body 410, an elastic member 420, a first throttle member 430, and a second throttle member 440. Among them, the first throttle member 430 and the second throttle member 440 are respectively used to open or close the valve port portions distributed along the axial direction of the valve seat assembly 500. An installation ring groove 411 extending around its own axis is provided on the outer wall of the main core body 410. The installation ring groove 411 includes a first side wall 412, a second side wall 413, and an installation bottom wall 414. The first side wall 412 and the second side wall 413 are arranged at both ends of the main core body 410 along its own axial direction. Specifically, the first side wall 412 is provided at one end of the installation ring groove 411 close to the rotor assembly 100, and the second side wall 413 is provided at one end of the installation ring groove 411 far from the rotor assembly 100. The installation bottom wall 414 is a part of the outer side wall of the main core body 410 and is arranged between the first side wall 412 and the second side wall 413.

[0051] Along the direction from the valve seat ring 540 to the gasket 550, the first throttle member 430, the elastic member 420, and the second throttle member 440 are sequentially and movably sleeved on the installation bottom wall 414. The elastic member 420 is always in a compressed state, and the elastic member 420 can respectively provide elastic acting forces on the first throttle member 430 and the second throttle member 440, so that the first throttle member 430 has a tendency to press against the first side wall 412, and the second throttle member 440 has a tendency to press against the second side wall 413.

[0052] It should be noted that the rotor assembly 100, the lead screw 200, the main core body 410, the elastic member 420, the first throttle member 430, the second throttle member 440, and the valve seat assembly 500 are all coaxially arranged.

[0053] With such a setting, when the cumulative assembly tolerance of the valve is too large, the elastic member 420 will push the first throttle member 430 and the second throttle member 440 to move in the sealing direction to compensate for the cumulative assembly tolerance. Ensure that when the cumulative assembly tolerance is too large, the first throttle member 430 and the second throttle member 440 can still achieve simultaneous sealing.

[0054] Further, in one embodiment, the elastic member 420 may be a compression spring, or may also be a compression spring piece, etc., which will not be enumerated one by one herein.

[0055] Further, in one embodiment, the first throttle member 430 and the second throttle member 440 are elastic members. For example, the first throttle member 430 and the second throttle member 440 may be rubber members, silica gel members or soft plastic members. In this way, it is beneficial for the first throttle member 430 and the second throttle member 440 to seal the valve orifice, preventing the valve from leaking.

[0056] In one embodiment, as Figure 2 shown, along the direction from the valve seat ring 540 to the gasket 550, the valve orifice includes a first valve orifice 521, a second valve orifice 522, a third valve orifice 523 and a fourth valve orifice 524 arranged in sequence. The distance between the first valve orifice 521 and the third valve orifice 523 is less than the maximum distance between the first throttle member 430 and the second throttle member 440, and the distance between the second valve orifice 522 and the fourth valve orifice 524 is less than the maximum distance between the first throttle member 430 and the second throttle member 440. The first throttle member 430 is used to seal the first valve orifice 521 or the second valve orifice 522, and the second throttle member 440 is used to seal the third valve orifice 523 or the fourth valve orifice 524.

[0057] When the valve core assembly 400 moves towards the direction close to the rotor assembly 100, since the distance between the first valve orifice 521 and the third valve orifice 523 is less than the maximum distance between the first throttle member 430 and the second throttle member 440, and the elastic member 420 is compressible, therefore, the first throttle member 430 first seals the first valve orifice 521. After that, a reaction thrust acts on the first throttle member 430 at the first valve orifice 521, so that the first throttle member 430 exerts a pressure on the elastic member 420. The elastic member 420 is compressed under the pressure. At this time, the main core body 410 drives the second throttle member 440 to continue moving towards the direction close to the rotor assembly 100, and makes the second throttle member 440 seal the third valve orifice 523.

[0058] Similarly, when the valve core assembly 400 moves towards the direction away from the rotor assembly 100, since the distance between the fourth valve orifice 524 and the second valve orifice 522 is less than the maximum distance between the first throttle member 430 and the second throttle member 440, and the elastic member 420 is compressible, therefore, the second throttle member 440 first seals the fourth valve orifice 524. After that, a reaction thrust acts on the second throttle member 440 at the fourth valve orifice 524, so that the second throttle member 440 exerts a pressure on the elastic member 420. The elastic member 420 is compressed under the pressure. At this time, the main core body 410 drives the first throttle member 430 to continue moving towards the direction close to the rotor assembly 100, and makes the first throttle member 430 seal the second valve orifice 522.

[0059] In one embodiment, the hardness of the second throttle member 440 is greater than that of the first throttle member 430.

[0060] With such a setting, it is possible to prevent the second throttle member 440 from falling off after being subjected to a pressure difference.

[0061] In one embodiment, in order to facilitate the installation of the first throttle member 430, the second throttle member 440, and the elastic member 420, the second side wall 413 is a welded part. Thus, the first throttle member 430, the second throttle member 440, and the elastic member 420 can be first sleeved on the installation bottom wall 414, and then the second side wall 413 is welded to one end of the main core body 410 to enclose and form the installation ring groove 411.

[0062] Further, in one embodiment, as Figure 2 shown, along the direction from the valve seat ring 540 to the washer 550, the external interface 511 includes a first interface 512, a second interface 513, a third interface 514, and a fourth interface 515 arranged in sequence. Moreover, the first valve port 521, the first interface 512, the second valve port 522, the second interface 513, the third valve port 523, the third interface 514, the fourth valve port 524, and the fourth interface 515 are sequentially distributed along the axial direction of the valve seat assembly 500.

[0063] When the rotor assembly 100 drives the valve core assembly 400 to move away from the rotor assembly 100 to the first preset position through the lead screw 200, the first throttle member 430 can close the second valve port 522, and the second throttle member 440 can close the fourth valve port 524. Moreover, the first interface 512 is communicated with the fourth interface 515 through the first valve port 521, and the second interface 513 is communicated with the third interface 514 through the third valve port 523.

[0064] When the rotor assembly 100 drives the valve core assembly 400 to move towards the rotor assembly 100 to the second preset position through the lead screw 200, the first throttle member 430 can close the first valve port 521 and the second throttle member 440 can close the third valve port 523. Moreover, the first interface 512 is communicated with the second interface 513 through the second valve port 522, and the third interface 514 is communicated with the fourth interface 515 through the fourth valve port 524.

[0065] When the valve core assembly 400 is between the first preset position and the second preset position, the first valve port 521, the first interface 512, the second valve port 522, the second interface 513, the third valve port 523, the third interface 514, the fourth valve port 524, and the fourth interface 515 are communicated with each other.

[0066] In one embodiment, as Figure 3 and Figure 4As shown, the valve core assembly 400 further includes a first gasket 450 and a second gasket 460. The first gasket 450 is movably sleeved on the outer peripheral side of the main core body 410 and is disposed between the elastic member 420 and the first throttle member 430, so that the elastic member 420 abuts against the first throttle member 430 through the first gasket 450. The second gasket 460 is movably sleeved on the outer peripheral side of the main core body 410 and is disposed between the elastic member 420 and the second throttle member 440, so that the elastic member 420 abuts against the second throttle member 440 through the second gasket 460.

[0067] With such an arrangement, the contact areas between the elastic member 420 and the first throttle member 430, and between the elastic member 420 and the second throttle member 440 are increased, and the pressures between the elastic member 420 and the first throttle member 430, and between the elastic member 420 and the second throttle member 440 are reduced. This can prevent the elastic member 420 from damaging the first throttle member 430 and the second throttle member 440, and is beneficial for the elastic member 420 to push the first throttle member 430 as a whole to move axially through the first gasket 450, and is beneficial for the elastic member 420 to push the second throttle member 440 as a whole to move axially through the second gasket 460.

[0068] Further, in an embodiment, the first gasket 450 and the second gasket 460 are made of hard materials. Specifically, the first gasket 450 and the second gasket 460 can be hard plastic parts, or metal parts, etc., which are not listed one by one here.

[0069] This application also provides a fluid control assembly. The fluid control assembly includes a valve seat assembly 500 and a valve core assembly 400. The valve seat assembly 500 includes a valve seat main body 510, a valve core sleeve 530 and a valve seat ring 540. The valve seat main body 510 is fixedly sleeved on the outer peripheral side of the valve core sleeve 530, the valve core sleeve 530 is fixedly sleeved on the outer peripheral side of the valve seat ring 540. There is a gap between the valve seat ring 540 and the valve seat main body 510. Part of the valve core sleeve 530 is located in the gap between the valve seat ring 540 and the valve seat main body. The valve core sleeve 530 has at least two valve orifice parts. The valve core assembly 400 moves along the inner wall of the valve core sleeve 530 to close or open the corresponding valve orifice parts.

[0070] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0071] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can be made, and these all fall within the protection scope of the present application. Therefore, the patent protection scope of the present application shall be subject to the appended claims.

[0072] In the description of the present application, it should be understood that the orientation or positional relationship indicated by 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. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application 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 on the present application.

[0073] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0074] In the present application, unless otherwise clearly specified and limited, the terms "mounted", "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 or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0075] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0076] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0077] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific implementations and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

Claims

1. A valve, characterized in that: The invention comprises a valve seat assembly (500) and a valve core assembly (400), wherein the valve seat assembly (500) comprises a valve core sleeve (530) and a valve seat ring (540), wherein the valve core sleeve (530) is fixedly sleeved on the outer peripheral side of the valve seat ring (540), wherein a valve core cavity is arranged in the valve core sleeve (530), and wherein the valve core sleeve (530) has at least two valve openings, and at least a part of the valve core assembly (400) moves in the valve core cavity to close or open the corresponding valve opening.

2. The valve according to claim 1, characterized in that The valve seat assembly (500) further comprises a sleeve (300), the valve seat ring (540) and the sleeve (300) are made of the same material, and the valve seat ring (540) and the valve core sleeve (530) are made of different materials.

3. The valve according to claim 2, characterized in that The valve core sleeve (530) is made of aluminum alloy, and the valve seat ring (540) and the sleeve (300) are both made of stainless steel.

4. The valve according to claim 1, characterized in that The outer wall of the valve core sleeve (530) and the inner wall of the valve seat ring (540) are connected by interference fit, or the outer wall of the valve core sleeve (530) and the inner wall of the valve seat ring (540) are connected by threads.

5. The valve according to claim 1, characterized in that A third sealing ring (580) is provided between the valve core sleeve (530) and the valve seat ring (540); the third sealing ring (580) is arranged on the valve core sleeve (530); or the third sealing ring (580) is arranged on the valve seat ring (540).

6. The valve according to claim 1, characterized in that The inner wall of the valve core sleeve (530) is provided with a plurality of through holes spaced apart along the axial direction of the valve, and the outer wall of the valve core sleeve (530) is provided with a plurality of flow channel grooves (531) spaced apart, the flow channel grooves (531) are connected to the through holes in a one-to-one correspondence, and the through holes are connected to the valve core cavity.

7. The valve according to claim 1, characterized in that The valve seat assembly (500) further comprises a gasket (550), wherein the gasket (550) is connected to an end of the valve core sleeve (530) away from the valve seat ring (540); The outer wall of the gasket (550) and the inner wall of the valve core sleeve (530) are connected by interference fit; or, the outer wall of the gasket (550) and the inner wall of the valve core sleeve (530) are threadedly fitted; or, the outer wall of the gasket (550) and the inner wall of the valve core sleeve (530) are welded.

8. The valve according to claim 1, characterized in that The valve core assembly (400) further comprises a valve core assembly (400), wherein the valve core assembly (400) comprises a main core body (410), an elastic member (420), a first throttle member (430) and a second throttle member (440), wherein the first throttle member (430) and the second throttle member (440) are respectively used to open or close the valve port portion, and an outer wall of the main core body (410) is provided with a mounting annular groove (411) extending around its own axis, and the mounting annular groove (411) comprises a first side wall (412), a second side wall (413) and a mounting bottom wall (414), wherein the first side wall (412) and the second side wall (413) are arranged at two ends of the main core body (410) along its own axial direction, and the mounting bottom wall (414) is arranged between the first side wall (412) and the second side wall (413); The first throttle member (430), the elastic member (420) and the second throttle member (440) are movably mounted on the mounting bottom wall (414) in sequence, the elastic member (420) is always in a compressed state, and the elastic member (420) can provide elastic force to the first throttle member (430) and the second throttle member (440) respectively, so that the first throttle member (430) has a tendency to press against the first side wall (412), and the second throttle member (440) has a tendency to press against the second side wall (413).

9. The valve according to claim 8, characterized in that The valve port portion comprises a first valve port (521), a second valve port (522), a third valve port (523) and a fourth valve port (524) arranged in sequence; the first throttle member (430) is used to seal the first valve port (521) or the second valve port (522); and the second throttle member (440) is used to seal the third valve port (523) or the fourth valve port (524); After the second throttling member (440) seals the fourth valve port (524), the main core (410) drives the first throttling member (430) to slide a certain distance and then closes the second valve port (522); after the first throttling member (430) seals the first valve port (521), the main core (410) drives the second throttling member (440) to slide a certain distance and then closes the third valve port (523).

10. The valve according to claim 8, characterized in that The valve core assembly (400) also includes a first gasket (450) and a second gasket (460), wherein the first gasket (450) is movably mounted on the outer peripheral side of the main core body (410) and is arranged between the elastic member (420) and the first throttle member (430), and the second gasket (460) is movably mounted on the outer peripheral side of the main core body (410) and is arranged between the elastic member (420) and the second throttle member (440).

11. A fluid control assembly, characterized in that: The invention comprises a valve seat assembly (500) and a valve core assembly (400), wherein the valve seat assembly (500) comprises a valve seat body (510), a valve core sleeve (530) and a valve seat ring (540), wherein the valve seat body (510) is fixedly sleeved on the outer peripheral side of the valve core sleeve (530), and the valve core sleeve (530) is fixedly sleeved on the outer peripheral side of the valve seat ring (540), and a gap is provided between the valve seat ring (540) and the valve seat body (510), and part of the valve core sleeve (530) is located in the gap between the valve seat ring (540) and the valve seat body, and the valve core sleeve (530) has at least two valve openings, and the valve core assembly (400) moves along the inner wall of the valve core sleeve (530) to close or open the corresponding valve openings.

12. The fluid control assembly according to claim 11, characterized in that The outer wall of the valve core sleeve (530) and the inner wall of the valve seat body (510) are interference fit; Alternatively, the outer wall of the valve core sleeve (530) and the inner wall of the valve seat body (510) are threadedly matched.

13. The fluid control assembly according to claim 11, characterized in that: The valve seat body (510) is provided with a seat cavity and a plurality of external interfaces (511) respectively connected to the seat cavity, the valve core sleeve (530) is fixedly connected to the inner wall of the seat cavity, and the outer peripheral side of the valve core sleeve (530) is provided with a plurality of spaced flow channel grooves (531), and the flow channel grooves (531) are connected to the corresponding external interfaces (511).

14. The fluid control assembly according to claim 13, characterized in that The seat cavity comprises a first cavity with equal diameter at all axial locations, the flow channel groove (531) is an annular structure arranged around the valve axis, and a plurality of the flow channel grooves (531) are located in the first cavity.

15. The fluid control assembly according to claim 13, characterized in that A first sealing ring (560) is provided between the valve core sleeve (530) and the valve seat body (510), and a flow channel groove (531) is provided between two adjacent first sealing rings (560).

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