valve

Abstract

The application provides a valve, which comprises a housing, a valve seat and a valve core, a fluid channel is arranged in the housing, the valve seat is arranged in the housing and connected with the housing, the valve seat is provided with a valve seat opening, and the valve core is arranged in the housing and configured to be rotatable to open or close the valve seat opening, so as to connect or disconnect the fluid channel. The valve is small in size.

Description

Technical Field

[0001] This application relates to a valve, and more particularly to a solenoid valve used in piping of a refrigeration system. Background Technology

[0002] The refrigeration system's piping is equipped with solenoid valves, which are connected to the control system and open or close according to signals received from the control system, thereby opening or closing the flow path. Existing solenoid valves typically allow unidirectional fluid flow. Summary of the Invention

[0003] This application provides a valve, the valve comprising: a housing having a fluid passage therein; a valve seat disposed in and connected to the housing, the valve seat having a valve seat opening; and a valve core disposed in the housing and configured to rotate to open or close the valve seat opening, thereby connecting or disconnecting the fluid passage.

[0004] As described above, the valve core has a valve core opening. When the valve core rotates so that the valve core opening aligns with the valve seat opening, the valve seat opening opens. When the valve core opening is misaligned with the valve seat opening, the valve seat opening closes.

[0005] As described above, the plane in which the valve core rotates is transverse to the extension direction of the fluid channel.

[0006] The valve as described above further includes a power unit capable of driving the valve core to rotate. The power unit includes an electromagnet located within the housing.

[0007] The valve described above has an electrical connection portion through which the power unit is connected to the outside.

[0008] The valve as described above further includes a seal disposed between the valve seat and the valve core, the seal being made of an elastic material.

[0009] The valve as described above further includes a sealing adjustment section, at least a portion of the valve core being disposed between the sealing adjustment section and the valve seat, the sealing adjustment section being capable of adjusting the distance between the valve core and the valve seat.

[0010] As described above, in the valve, the sealing adjustment part is connected to the housing, one of the valve core and the sealing adjustment part has a protrusion, and the other has a wedge-shaped boss. The wedge-shaped boss has a bottom near the outer surface of the sealing adjustment part and a top away from the surface of the sealing adjustment part. The protrusion and the wedge-shaped boss are configured such that when the valve core is rotated to the position where the valve seat opening is open, the top is aligned with the protrusion, and when the valve core is rotated to the position where the valve seat opening is closed, the bottom is aligned with the protrusion.

[0011] As described above, the valve seat has a valve seat cavity, the valve seat opening is disposed on the side wall of the valve seat and communicates with the valve seat cavity, the valve core is a hollow cylindrical shape, the valve core opening is disposed on the side wall of the valve core, and the valve core is located in the valve seat cavity.

[0012] The valve described above is a shut-off valve, and it is used in the piping of a refrigeration system.

[0013] The valve in this application includes a power unit, a valve core, and a valve seat. The power unit can drive the valve core to rotate, thereby changing the relative position of the valve core and the valve seat to open or close the valve. The fluid in the valve of this application can flow in either the forward or reverse direction. The power unit in this application is located inside the valve housing, resulting in a smaller valve size. Attached Figure Description

[0014] Figure 1A This is a perspective view of the valve in the first embodiment of this application;

[0015] Figure 1B yes Figure 1A An exploded view of the valve in the diagram;

[0016] Figure 2A yes Figure 1A A three-dimensional view of the middle shell;

[0017] Figure 2B yes Figure 2A A sectional view of the inner shell;

[0018] Figure 3 This is a perspective view of the valve seat in this application;

[0019] Figure 4A yes Figure 1B A 3D view of the central valve core;

[0020] Figure 4B yes Figure 4A Another angle of the valve core and a three-dimensional view of the seal;

[0021] Figure 5 yes Figure 1B A perspective view of the central sealing adjustment section;

[0022] Figure 6 yes Figure 1B A three-dimensional view of the central power unit;

[0023] Figure 7A yes Figure 1A A partial cross-sectional view of the valve in the closed position;

[0024] Figure 7B yes Figure 1A A cross-sectional view taken along the axial direction when the valve is in the closed position;

[0025] Figure 7C yes Figure 1A A partial cross-sectional view of the valve in the open position;

[0026] Figure 7D yes Figure 1A A cross-sectional view taken along the axial direction when the valve is in the open position;

[0027] Figure 8A This is a perspective view of the valve in the second embodiment of this application;

[0028] Figure 8B yes Figure 8A An exploded view of the valve in the diagram;

[0029] Figure 9 yes Figure 8B 3D view of the middle valve seat;

[0030] Figure 10 yes Figure 8B A 3D view of the central valve core;

[0031] Figure 11A yes Figure 8A A cross-sectional view taken along the axial direction when the valve is in the closed state;

[0032] Figure 11B Yes, yes Figure 8A A cross-sectional view taken along the axial direction when the valve is in the open position. Detailed Implementation

[0033] Various specific embodiments of this application will now be described with reference to the accompanying drawings, which form part of this specification. It should be understood that although terms indicating direction, such as "front," "rear," "up," "down," "left," and "right," are used herein to describe various exemplary structural parts and elements, their use is merely for illustrative purposes and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed herein can be arranged in different orientations, these terms indicating direction are illustrative only and should not be considered limiting.

[0034] Figure 1AThis is a perspective view of the valve in the first embodiment of this application. Figure 1B yes Figure 1A An exploded view of the valve in the diagram; as shown. Figure 1A and Figure 1B As shown, valve 100 includes a housing 101, a valve seat 106, a valve core 104, a seal 107, a sealing adjustment part 109, and a power unit 102. The valve seat 106, valve core 104, seal 107, sealing adjustment part 109, and power unit 102 are located within the housing 101. The valve seat 106 is connected to the housing 101. Driven by the power unit 102, the valve core 104 can rotate relative to the valve seat 106, thereby opening or closing the valve 100. The seal 107 is disposed between the valve seat 106 and the valve core 104 to enhance the seal between them. The sealing adjustment part 109 can adjust the degree of compression of the seal 107 to facilitate the rotation of the valve core 104 relative to the valve seat 106.

[0035] Figure 2A yes Figure 1A A three-dimensional view of the middle shell. Figure 2B yes Figure 2A A cross-sectional view of the middle shell, as shown below. Figure 2A and Figure 2B As shown, the housing 101 includes a first part 201 and a second part 202, which are connected to each other. The arrangement of the first part 201 and the second part 202 facilitates the installation of components such as the valve seat 106, the valve core 104, and the power unit 102 into the housing 101. The housing 101 has a main body 216, a first connecting part 211, and a second connecting part 212. The main body 216 is generally cylindrical, and the first connecting part 211 and the second connecting part 212 are tubular and connected to both ends of the main body 216. The main body 216 has a hollow cavity 215 in which components such as the valve seat 106, the valve core 104, and the power unit 102 are accommodated. The cavity 215 extends axially to form a fluid channel 205, which has a first flow port 231 and a second flow port 232. The first flow port 231 and the second flow port 232 are located at opposite ends of the cavity 215 in the axial direction. The first connecting portion 211 and the second connecting portion 212 extend axially from the edges of the first flow port 231 and the second flow port 232, respectively.

[0036] An electrical interface 245 is provided on the side of the cavity 215, and the electrical interface 245 communicates with the cavity 215. The housing 101 also has an electrical connection portion 217, which extends from the edge of the electrical interface 245. The inner or outer wall of the electrical connection portion 217 is threaded, enabling threaded connection with external electrical equipment. The electrical connection portion 217 can be sealed to the external electrical equipment.

[0037] Figure 3 This is a perspective view of the valve seat in this application, such as... Figure 3 As shown, the valve seat 106 is generally disc-shaped, having a base 301 and a rim 302. The base 301 is generally disc-shaped, having a first side 311 and a second side 312, and three valve seat openings 360 penetrating the first side 311 and the second side 312. The valve seat openings 360 allow fluid communication between the spaces on both sides of the valve seat 106. In one embodiment of this application, the three valve seat openings 360 are evenly distributed along the circumferential direction, and the distance between adjacent valve seat openings 360 is greater than the diameter of the valve seat opening 360. The rim 302 extends from the edge of the base 301 and connects to the inner wall of the housing 101. A seal is formed between the rim 302 and the inner wall of the housing 101, preventing fluid from passing between the rim 302 and the housing 101. Fluid passes through the valve seat 106 only through the valve seat openings 360. In another embodiment of this application, there is no need to set a rim, and the edge of the bottom of the disc 301 is directly connected to the inner wall of the housing 101.

[0038] Figure 4A yes Figure 1B A 3D view of the valve core. Figure 4B yes Figure 4A Another angle of the valve core and a three-dimensional view of the seal. Figure 4A and Figure 4B The structure of the valve core and the installation position of the seal are shown.

[0039] like Figure 4A and Figure 4B As shown, the valve core 104 is generally circular and plate-shaped, having a first side 411 and a second side 412. The valve core 104 is arranged side-by-side with the valve seat 106, with the second side 412 facing the first side 311 of the valve seat. The valve core 104 has a valve core opening 440 extending through both the first side 411 and the second side 412. The valve core 104 is configured to rotate relative to the valve seat 106. The valve core opening 440 is configured to align with the valve seat opening 360 when the valve core 104 is rotated to a specific position, allowing fluid to flow through the valve core opening 440 and the valve seat opening 360. The size of the valve core opening 440 is set such that the distance between adjacent valve core openings 440 is greater than the size of the valve seat opening 360. When the valve core opening 440 and the valve seat opening 360 are misaligned, the valve seat opening 360 is partially blocked by the valve core 104 between adjacent valve core openings 440, so that fluid cannot pass through the valve core 104 and the valve seat 106.

[0040] The valve core 104 includes a seal mounting portion 423 disposed on the second side 412 of the valve core, the seal mounting portion 423 being disposed around the valve core opening 440. The seal mounting portion 423 includes an annular groove 443, in which an annular seal 107 is partially located. The annular seal 107 is made of an elastic material and is capable of undergoing a certain deformation. A portion of the annular seal 107 extends beyond the annular groove to facilitate deformation of the annular seal 107 under the pressure of the valve seat 106, thereby achieving a sealing effect. In one embodiment of this application, the seal mounting portion 423 includes an annular first flange 441 extending from the edge of the valve core opening 440, and a second flange 442 disposed around the first flange 441, with a gap between the first flange 441 and the second flange 442, thereby forming the annular groove 443.

[0041] In another embodiment of this application, the annular groove is formed by the inward recess of the second side surface 412 of the valve core.

[0042] The valve core 104 also includes a power connection portion 470 and three protrusions 420 disposed on the first side surface 411 of the valve core. The power connection portion 470 extends from the center of the first side surface 411 of the valve core. The power connection portion 470 has a non-circular recess 472 for accommodating the rotating shaft of a power unit, enabling the power unit to drive the valve core 104 to rotate. The three protrusions 420 protrude from the plane containing the first side surface 411 of the valve core. The three protrusions 420 are evenly distributed in the circumferential direction, with each protrusion located between adjacent valve core openings 440.

[0043] Figure 5 yes Figure 1B A three-dimensional view of the central sealing adjustment section. (See image below.) Figure 5 As shown, the sealing adjustment part 109 is generally annular and arranged side by side with the valve core 104. The inner diameter of the annular part 109 is smaller than the outer diameter of the valve core 104, so that the valve core 104 is confined between the sealing adjustment part 109 and the valve seat 106 and cannot pass through the sealing adjustment part 109.

[0044] The outer edge of the sealing adjustment part 109 is connected to the inner wall of the housing 101, preventing the sealing adjustment part 109 from rotating relative to the housing 101. The outer surface of the sealing adjustment part 109 facing the valve core 104 forms a working surface 550. Three wedge-shaped bosses 520 protruding from the surface of the working surface 550 are provided on the working surface 550, and the three wedge-shaped bosses 520 are evenly arranged along the circumferential direction. Each of the three wedge-shaped bosses 520 has a bottom 521 and a top 522, and the wedge-shaped bosses 520 extend along the circumferential direction, gradually moving away from the plane of the working surface 550 from the bottom 521 to the top 522. Thus, the side of the wedge-shaped bosses 520 facing the valve core 104 forms a sloped adjustment surface 529. The adjusting surface 529 contacts the protrusion 420 of the valve core 104. During the rotation, the valve core 104 contacts different positions of the adjusting surface 529, so that the valve core 104 can move a certain distance in the axial direction of the valve 100 to adjust the relative position between the valve core 104 and the valve seat 106.

[0045] Figure 6 yes Figure 1B A three-dimensional view of the power unit, such as Figure 6 As shown, in this application, the power unit 102 includes a main body 601, a bracket 605, a rotating shaft 609, and a wiring portion 607. The wiring portion 607 is located in the electrical connection portion 217 and can be electrically connected to an external source. The main body 601 includes an electromagnet 604 (coil), which is a driving component capable of rotational movement, thereby driving the rotating shaft 609 to rotate. One end of the bracket 605 is connected to the main body 601, and the other end is connected to the housing 101, so that the housing 611 of the main body 601 cannot move relative to the housing 611. One end of the rotating shaft 609 is connected to the main body 601, and the other end is connected to the valve core 104, so that the electromagnet 604 can drive the valve core 104 to rotate. There is a gap between the main body 601 and the inner wall of the housing 101, allowing fluid to pass between the housing 101 and the main body 601.

[0046] Figure 7A yes Figure 1A A partial sectional view of the valve in the closed position. Figure 7B yes Figure 1A A cross-sectional view taken along the axial direction when the valve is in the closed position. Figure 7C yes Figure 1A A partial cross-sectional view of the valve in the open position. Figure 7D yes Figure 1A A cross-sectional view taken along the axial direction when the valve is in the open position.

[0047] In one embodiment of this application, the electromagnet 604 in the valve 100 can drive the valve core 104 to rotate along the first direction R1 as shown in the figure, so that the valve core opening 440 is aligned or offset from the valve seat opening 360, thereby connecting or disconnecting the fluid passage 205 to open or close the valve 100. The valve core 104 rotates approximately along the radial direction of the cavity 215, and the plane containing the rotation direction of the valve core 104 is approximately perpendicular to the extension direction of the fluid passage 205, that is, transverse to the extension direction of the fluid passage 205. In one embodiment of this application, there are three valve core openings 440 and three valve seat openings 360, which are evenly distributed in the circumferential direction; the valve 100 is configured as a shut-off valve, capable of switching between open and closed states, and the electromagnet 604 is configured to rotate the valve core 104 once with a rotation angle of 60°. In other embodiments of this application, the angle of each rotation of the valve core 104 can be arranged according to the size, number, and position of the valve core opening and the valve seat opening.

[0048] In another embodiment of this application, the valve core 104 may also rotate in the opposite direction R1 as shown in the figure.

[0049] like Figure 7A and 7B As shown, when valve 100 is in the closed state, valve core 104 rotates to the closed position. At this time, the valve core opening 440 is misaligned with the valve seat opening 360. In the axial direction of valve 100, valve core opening 440 is blocked by the first side 311 of the valve seat, and valve seat opening 360 is blocked by the second side 412 of the valve core. Fluid cannot pass through valve core opening 440 or valve seat opening 360. Furthermore, the protrusion 420 of valve core 104 contacts the top 522 of the wedge-shaped protrusion 520 of sealing adjustment part 109. Thus, valve core 104 is furthest from sealing adjustment part 109 and closest to valve seat 106. At this time, seal 107 is compressed, forming a seal between valve seat 106 and valve core 104. Fluid is blocked by seal 107 and cannot flow into or out of valve core 104 opening. When valve 100 is closed, the seal 107 is compressed and deformed to the greatest extent, resulting in a better sealing effect. At the same time, the friction between valve core 104 and valve seat 106 is relatively large.

[0050] like Figure 7C and 7D As shown, when valve 100 is in the open state, valve core 104 rotates to the open position. At this time, the valve core opening 440 is aligned with the valve seat opening 360, allowing fluid to pass through either the valve core opening 440 or the valve seat opening 360, thus connecting the fluid passage 205. Figure 7ACompared to the previous state, the valve core 104 has rotated 60°. At this point, the protrusion 420 of the valve core 104 contacts the bottom 521 of the wedge-shaped protrusion 520 of the sealing adjustment part 109. Therefore, the valve core 104 is closest to the sealing adjustment part 109 and furthest from the valve seat 106. Figure 7A Compared to the valve in the previous valve, the deformation of the seal 107 is restored. When the valve 100 is open, the seal 107 is compressed and its deformation is minimal or non-existent. At this time, the friction between the valve core 104 and the valve seat 106 is small, which facilitates the rotation of the valve core 104 relative to the valve seat 106. In other words, the power required to drive the valve core 104 to rotate is smaller, and the energy consumption of the electromagnet is lower.

[0051] In this embodiment, the wedge-shaped boss 520 and the protrusion 420 cooperate to change the distance between the valve core 104 and the valve seat 106 during rotation, thereby changing the degree of compression of the seal 107 between the valve core 104 and the valve seat 106. When the distance between the valve core 104 and the valve seat 106 is close, the seal 107 undergoes greater deformation under compression, resulting in a better sealing effect, but also higher friction, making it difficult for the valve core to rotate. When the distance between the valve core 104 and the valve seat 106 is far, the seal 107 undergoes less deformation under compression, or is not compressed and does not deform, resulting in a weaker sealing effect, but also lower friction, making it easier for the valve core to rotate. When the valve 100 in this application is in the closed state, a good seal is required to prevent fluid from passing through the valve 100. The seal is designed to undergo greater deformation under compression to meet the sealing requirements of the valve 100. When the valve 100 is in the flowing state, the seal is designed to be uncompressed or only slightly compressed. In this embodiment, during the rotation of the valve core 104, the distance between the valve core 104 and the valve seat 106 gradually changes, and the deformation of the seal 107 due to compression also changes accordingly. Therefore, the frictional force between the valve core 104 and the valve seat 106 is a changing process, rather than remaining consistently high. This reduces the torque required to rotate the valve core 104 to a certain extent, thus reducing the workload of the electromagnet.

[0052] In this embodiment, the electromagnet 604 is located inside the housing 101 of the valve 100, resulting in a high degree of integration and a small valve volume. The valve core 104 opens or closes the valve 100 by rotating to change the position of the valve core opening 440 relative to the valve seat opening 360. The valve seat 106 and the sealing adjustment part 109 are fixedly connected to the housing 101, and the valve core 104 is disposed between the valve seat 106 and the sealing adjustment part 109. When the fluid flow exerts a thrust on the valve core 104 toward the valve seat 106, the valve core 104 is supported by the valve seat 106 and cannot move further in the direction of the thrust. When the fluid flow exerts a thrust on the valve core 104 toward the sealing adjustment part 109, the valve core 104 is supported by the sealing adjustment part 109 and cannot move further in the direction of the thrust. Therefore, the valve core 104 can withstand the thrust of the fluid flow in both directions. Fluid can flow in valve 100 either from the first flow port 231 to the second flow port 232 or from the second flow port 232 to the first flow port 231. In other words, fluid can flow in either direction within valve 100. When valve 100 is closed, regardless of the flow direction, the thrust of the fluid cannot push valve core 104 out of the closed position.

[0053] The valve 100 in this embodiment can be applied to systems where the flow direction needs to be changed, without the need to reinstall the valve.

[0054] In this embodiment, the valve 100 is connected to the outside via an electrical connection part. The electrical connection part has a threaded structure, which provides good sealing performance and is not prone to leakage.

[0055] Figure 8A This is a perspective view of the valve in the second embodiment of this application. Figure 8B yes Figure 8A An exploded view of the valve in the diagram. Figure 8A and 8B The illustrated embodiments and Figure 1A The illustrated embodiment is similar, except that the shapes of the valve core 804 and valve seat 806 are different. Furthermore, a sealing adjustment section is no longer provided.

[0056] like Figure 8A and Figure 8B As shown, valve 800 includes a housing 801, a valve seat 806, a valve core 804, a seal 807, and a power unit 802. The valve seat 806, valve core 804, seal 807, and power unit 802 are located within the housing 801. The valve seat 806 is connected to the housing 801. Driven by the power unit 802, the valve core 804 can rotate relative to the valve seat 806, thereby opening or closing the valve 800. The seal 807 is sleeved on the valve core 804 and located between the valve seat 806 and the valve core 804 to enhance the seal between them.

[0057] Figure 8B The housing 801 and the power unit 802 shown are respectively connected to Figure 1A The housing 101 shown is similar to the power unit 102, and will not be described again here.

[0058] Figure 9 yes Figure 8B A three-dimensional view of the valve seat, such as... Figure 9 As shown, the outer contour of the valve seat 806 is generally cylindrical. The valve seat 806 has a first end 911 and a second end 912 in the axial direction, and a sidewall 930 extending in the circumferential direction. The interior of the valve seat 806 has a valve seat cavity 916 formed by an inward recess from the surface of the second end 912. The valve core 804 can be accommodated in the valve seat cavity 916. The surface of the second end 912 forms a valve seat passage 918. The valve seat 806 has a valve seat opening 960, which penetrates the sidewall 930 and communicates with the valve seat cavity 916.

[0059] Figure 10 yes Figure 8B A 3D view of the valve core, as shown below. Figure 10 As shown, the outer contour of the valve core 804 is generally cylindrical. The valve core 804 has a first end 1011 and a second end 1012 in the axial direction, and a sidewall 1030 extending in the circumferential direction. The interior of the valve seat 806 has a valve core channel 1016 formed by an inward recess from the surface of the second end 1012, and a valve seat flow port 1018 formed on the surface of the second end 1012. There is a gap between the valve core channel 1016 and the first end 1011, meaning that one end of the valve core channel 1016 is closed. The first end 1011 is connected to a power device. The valve core 804 has a valve core opening 1040.

[0060] 1040 penetrates the side wall 1030 and communicates with the valve core channel 1016. The outer contour of the valve core 804 matches the valve seat cavity 916, and the valve core 804 can rotate within the valve seat cavity 916. A seal mounting groove 1070 is provided on the outer side of the valve core 804 for mounting an annular seal.

[0061] Figure 11A yes Figure 8A A cross-sectional view taken along the axial direction when the valve is in the closed position. Figure 11B Yes, yes Figure 8A A cross-sectional view taken along the axial direction when the valve is in the open position.

[0062] like Figure 11A and Figure 11BAs shown, valve seat 806 is housed within housing 801. The second end 912 of valve seat 806 is sealingly connected to the inner wall of housing 801. A gap exists between valve seat opening 960 and the inner wall of housing 801. Valve core 804 is located within valve seat 806, and a seal is located between valve core 804 and valve seat 806. Valve seat opening 960 communicates with the first flow port 1111 of fluid passage 1105 in housing 801, and valve seat flow port 918 communicates with the second flow port 1112 of housing 801.

[0063] like Figure 11A As shown, when valve 800 is in the closed state, valve core 804 rotates to... Figure 11A As shown, the valve core opening 1040 is offset from the valve seat opening 960, and the valve core opening 1040 is blocked by the inner wall of the valve seat cavity 916, so the valve core passage 1016 is in the closed state. At this time, the fluid in the valve 800 cannot pass through the valve core passage 1016, and the fluid passage 1105 is disconnected.

[0064] like Figure 11B As shown, when valve 800 is in the open position, valve core 804 rotates to... Figure 11B As shown, the valve core opening 1040 is aligned with the valve seat opening 960, and the valve core passage 1016 is in the open state. At this time, the fluid in the valve 800 can pass through the valve core passage 1016.

[0065] Similar to the embodiment shown in 1A, fluid can flow in either the forward or reverse direction within valve 800. When valve 800 is open, fluid can sequentially pass through the first flow port 1111, valve seat opening 960, valve core opening 1040, valve core channel 1016, valve seat flow port 918, and second flow port 1112 to form a first directional fluid passage, or sequentially pass through the second flow port 1112, valve seat flow port 918, valve core channel 1016, valve core opening 1040, valve seat opening 960, and first flow port 1111 to form a second directional fluid passage. Both valve core 804 and valve seat 806 are made of rigid material, with valve core 804 located within valve seat 806, which provides support for valve core 804. When valve 800 is closed, regardless of the flow direction, the thrust of the fluid cannot push valve core 804 out of the closed position.

[0066] Similar to the embodiment shown in 1A, the electromagnet of valve 800 is located inside housing 801, which also allows valve 800 to have a compact structure and small size. In this embodiment, valve 800 is connected to the outside via an electrical connection part, which has a threaded structure, providing good sealing performance and preventing leakage.

[0067] Although this disclosure has been described in conjunction with examples of the embodiments outlined above, various alternatives, modifications, variations, improvements, and / or substantially equivalents, whether known or currently or soon to be foreseen, will likely be apparent to those skilled in the art. Furthermore, the technical effects and / or technical problems described herein are exemplary and not limiting; therefore, the disclosures herein may be used to solve other technical problems and have other technical effects and / or can solve other technical problems. Accordingly, the examples of embodiments of this disclosure as set forth above are intended to be illustrative and not limiting. Various changes may be made without departing from the spirit or scope of this disclosure. Therefore, this disclosure is intended to include all known or previously developed alternatives, modifications, variations, improvements, and / or substantially equivalents.

Claims

1. A valve for piping in a refrigeration system, characterized in that... The valve includes: A housing (101, 801) having fluid channels (205, 1105) therein; A valve seat (106, 806) is disposed in and connected to the housing (101, 801), and the valve seat (106, 806) has a valve seat opening (360, 960). A valve core (104, 804) is disposed in the housing (101, 801) and configured to be rotatable to open or close the valve seat opening (360, 960) to connect or disconnect the fluid passage (205, 1105). A power unit (102, 802) capable of driving the valve core (104, 804) to rotate, the power unit (102, 802) including an electromagnet located in the fluid passage (205, 1105); and A sealing adjustment part (109) is connected to the housing. At least a portion of the valve core (104) is disposed between the sealing adjustment part (109) and the valve seat (106). The sealing adjustment part (109) is capable of adjusting the distance between the valve core (104) and the valve seat (106). One of the valve core (104) and the sealing adjustment part (109) has a protrusion (420), and the other has a wedge-shaped boss (520). The wedge-shaped boss (520) has a bottom (521) near the outer surface of the sealing adjustment part (109) and a top (523) away from the surface of the sealing adjustment part (109). The protrusion (420) and the wedge-shaped boss (520) are configured such that when the valve core (104) is rotated to the position where the valve seat opening (360) is open, the top (523) is aligned with the protrusion (420), and when the valve core (104) is rotated to the position where the valve seat opening (360) is closed, the bottom (521) is aligned with the protrusion (420).

2. The valve as described in claim 1, characterized in that: The valve core (104, 804) has a valve core opening (440). When the valve core (104, 804) rotates so that the valve core opening (440, 1040) is aligned with the valve seat opening (360, 960), the valve seat opening (360, 960) is open. When the valve core opening (440, 1040) is misaligned with the valve seat opening (360, 960), the valve seat opening (360, 960) is closed.

3. The valve as described in claim 1, characterized in that: The plane containing the rotation direction of the valve core (104, 804) is transverse to the extension direction of the fluid channel (205, 1105).

4. The valve as claimed in claim 1, characterized in that: The valve has an electrical connection (217), through which the power unit (102) is connected to the outside.

5. The valve as claimed in claim 1, characterized in that... Also includes: A seal (107, 807) is disposed between the valve seat (106, 806) and the valve core (104, 804), and the seal (107, 807) is made of an elastic material.

6. The valve as described in claim 2, characterized in that: The valve seat (806) has a valve seat cavity (916), and the valve seat opening (960) is disposed on the side wall of the valve seat (806) and communicates with the valve seat cavity (916). The valve core is a hollow cylindrical shape, and the valve core opening (1040) is disposed on the side wall of the valve core (804). The valve core (804) is located in the valve seat cavity (916).

7. The valve as claimed in claim 1, characterized in that: The valve is a shut-off valve.

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