Valve device and air conditioning system equipped with same

Abstract

The invention relates to the technical field of heat exchange systems, and provides a valve device and an air conditioning system provided with the valve device. The valve device comprises a valve body, a valve element structure and an adjusting structure, the valve body is provided with a valve cavity, a feeding port and at least two spaced discharging ports, the feeding port and the discharging ports are communicated with the valve cavity, a valve port located between the feeding port and the discharging ports is formed in the valve cavity, the valve element structure is movably arranged in the valve cavity, and the valve element structure comprises an adjusting section. The adjusting section is provided with a first abutting side and a second abutting side in the circumferential direction of the valve element structure, the diameter of the section of the first abutting side is larger than that of the section of the second abutting side, the valve element structure can abut against the valve port or be away from the valve port so as to adjust connection and disconnection of the feeding port and the discharging port, and the valve element structure can rotate around the axis of the valve element structure. Therefore, one of the first top contact side and the second top contact side is enabled to be in top contact with the top contact rod, so that the opening and closing of each adjusting structure are switched. The valve device is not only used for cutting off a refrigerant, but also can be used for reversing the refrigerant, and is convenient to operate.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchange systems, and particularly to a valve device and an air-conditioning system equipped with the valve device. Background Art

[0002] Currently, for an air-conditioning system, when switching between a refrigeration mode and a heating mode, a four-way valve is usually provided to adjust the flow direction of the refrigerant flowing through the compressor relative to the indoor heat exchanger and the outdoor heat exchanger. At the same time, a stop valve also needs to be provided in the air-conditioning system to cut off the flow of the refrigerant, so as to adjust the opening and closing of the refrigerant cycle. However, such a setting makes the air-conditioning system relatively complex, and a four-way valve and a stop valve need to be provided separately. Summary of the Invention

[0003] Based on this, it is necessary to provide a valve device that can not only cut off the refrigerant but also reverse the flow direction of the refrigerant, and is convenient to operate.

[0004] A valve device includes a valve body, a valve core structure, and an adjusting structure;

[0005] The valve body is configured with a valve cavity, a feed port communicating with the valve cavity, and at least two discharge ports. The feed port and each of the discharge ports are spaced apart along the axial direction of the valve body and are arranged at an angle. A valve port is configured in the valve cavity between the feed port and each of the discharge ports; a corresponding adjusting structure is installed at each of the discharge ports, and each adjusting structure has a top contact rod;

[0006] The valve core structure is movably arranged in the valve cavity. The valve core structure can abut against the valve port or move away from the valve port to adjust the on-off of the feed port and the discharge ports; the valve core structure includes an adjusting section, and a first top contact side and a second top contact side are arranged along the circumferential direction of the valve core structure. The cross-sectional diameter of the first top contact side is larger than the cross-sectional diameter of the second top contact side;

[0007] Wherein, when the valve core structure moves in the valve cavity, it can rotate around its own axis, and each of the top contact rods is configured to selectively contact one of the first top contact side and the second top contact side in response to the rotation of the valve core structure, so as to switch the opening and closing of the corresponding adjusting structure.

[0008] It can be understood that precisely because the cross-sectional diameter of the first top contact side is greater than that of the second top contact side, the first top contact side protrudes radially along the valve core structure compared to the second top contact side. Then, when the valve core structure is located in the valve cavity, the distance between the first top contact side and the valve cavity wall is smaller than the distance between the second top contact side and the valve cavity wall. Therefore, when the valve core structure is in top contact fit with the top contact rod, the corresponding fit position of the first top contact side protrudes more radially along the valve core structure than the corresponding fit position of the second top contact side. Thus, when the first top contact side and the second top contact side of the valve core structure respectively contact the top contact rod of the adjustment structure, the axial displacement of the top contact rod along the discharge port can be adjusted to satisfy the opening and closing of each adjustment structure; moreover, when one top contact rod contacts the first top contact side, the other top contact rod contacts the second top contact side, thereby realizing the switching of the communication situation of the two discharge ports relative to the feed port and achieving commutation. At the same time, the proximity and distance of the valve core structure relative to the valve port can also be utilized to adjust the communication state between the feed port and the discharge port, realizing the opening and closing of the valve device. Therefore, this valve device only needs to adjust the state of the valve core structure to achieve the two functions of commutation and cut-off, and the operation is convenient.

[0009] In some of these embodiments, when the top contact rod contacts the first top contact side, the adjustment structure is opened; when the top contact rod contacts the second top contact side, the adjustment structure is closed.

[0010] In some of these embodiments, each adjustment structure further includes a conduit, an elastic member, and a sealing plate. The top contact rod passes through the lumen of the conduit. The elastic member is sleeved on the top contact rod and is located within the lumen. Two ends of the elastic member are respectively connected to the conduit and the top contact rod. The sealing plate is connected to one end of the top contact rod facing away from the valve core structure. The top contact rod is configured to move axially along the conduit in response to the rotation of the valve core structure, and the sealing plate moves synchronously with the top contact rod to adjust the sealing or opening of the conduit.

[0011] In some of these embodiments, along the axial direction of the valve core structure, the cross-section of the adjustment section is elliptical. The first top contact side corresponds to the major axis of the ellipse, and the second top contact side corresponds to the minor axis of the ellipse.

[0012] In some of these embodiments, openings communicating with the valve cavity are provided at both ends of the valve body along its own axial direction. One of the openings serves as the feed port, and the other opening serves as the assembly end;

[0013] Along the axial direction of the valve core structure, the valve core structure further includes a first sealing section and a second sealing section connected to both ends of the adjustment section. The first sealing section is disposed near the assembly end and is hermetically arranged with the wall of the valve cavity formed. The second sealing section is disposed near the valve port, and the second sealing section can abut against the valve port.

[0014] In some embodiments, the diameter of the first blocking segment is greater than the diameter of the second blocking segment, and the diameter of the first blocking segment is not less than the major axis dimension of the adjustment segment.

[0015] In some embodiments, the major axis dimension of the adjustment segment is equal to the diameter of the first blocking segment; and / or the diameter of the second blocking segment is greater than the minor axis dimension of the adjustment segment.

[0016] In some embodiments, in the axial direction of the valve body, a limit retaining ring is installed at the assembly end of the valve body, and the limit retaining ring can abut against the valve core structure to limit the axial movement of the valve core structure;

[0017] The distance between the limit ring and the valve port is a first distance, a first limit end face is constructed between the first blocking section and the adjusting section, a second limit end face is constructed between the second blocking section and the adjusting section, the distance between the first limit end face and the second limit end face is a second distance, and the difference between the first distance and the axial length of the valve core structure is smaller than the second distance.

[0018] In some embodiments, the first blocking section includes an assembly section body, which is arranged away from the second blocking section along the axial direction of the valve core structure, and the assembly section body is configured with a sealing groove, in which a sealing ring is installed, and the sealing ring is pressed between the sealing groove and the cavity wall forming the valve cavity;

[0019] The sealing groove is recessed radially inward from the outer circumferential surface of the assembly segment; or, at least two sealing protrusions are protruded radially outward from the outer circumferential surface of the assembly segment, and at least two sealing protrusions are arranged at intervals along the axial direction of the assembly segment and together with the assembly segment define the sealing groove.

[0020] In some embodiments, the valve device also includes a feed pipe and a discharge pipe, the feed pipe is connected to the feed port, and each discharge port is correspondingly connected to a discharge pipe, and each adjustment structure is installed on the corresponding discharge pipe for adjusting the opening and closing of the corresponding discharge pipe.

[0021] The present application also provides an air conditioning system, comprising the above-mentioned valve device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0023] Figure 1 Schematic diagram of the valve device provided by the present application;

[0024] Figure 2 Exploded view of the valve device provided by the present application;

[0025] Figure 3 First schematic diagram of the spool structure in the valve device provided by the present application;

[0026] Figure 4 Partial cross-sectional view of the valve device provided by the present application when it is not connected and one of the adjustment structures is closed;

[0027] Figure 5 Partial cross-sectional view of the valve device provided by the present application when it is not connected and one of the adjustment structures is open;

[0028] Figure 6 Partial cross-sectional view of the valve device provided by the present application when it is connected and one of the adjustment structures is closed;

[0029] Figure 7 Partial cross-sectional view of the valve device provided by the present application when it is connected and one of the adjustment structures is open;

[0030] Figure 8 Partial cross-sectional view of the spool structure in the valve device provided by the present application;

[0031] Figure 9 For Figure 8 Cross-sectional view of A-A in

[0032] Figure 10 Second schematic diagram of the spool structure in the valve device provided by the present application.

[0033] Reference numerals: 100, valve device; 10, valve core structure; 12, adjustment section; 20, valve body; 21, extension pipe section; 30, feed connection; 40, discharge connection; 50, adjustment structure; 51, top contact rod; 52, conduit; 53, elastic member; 54, sealing plate; 60, fixed seat; 61, connecting arm; 70, limiting retaining ring; 80, sealing ring; 101, first limiting end face; 102, second limiting end face; 103, operation hole; 111, first sealing section; 112, second sealing section; 121, first top contact side; 122, second top contact side; 201, valve cavity; 202, feed port; 203, discharge port; 204, assembly end; 205, valve port; 1111, assembly section body; 1112, sealing groove; 1121, conical surface; 6101, connecting hole. Detailed implementation manners

[0034] To make the above objects, features, and advantages of the present application more apparent and understandable, the following will describe the detailed implementation manners of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0035] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the present application are only for the purpose of illustration and do not represent the only implementation manner.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot 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 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 defined.

[0037] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the first feature being "above", "over" or "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" or "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is lower than that of the second feature.

[0038] Unless otherwise defined, all technical and scientific terms used in the description of this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the description of this application includes any and all combinations of one or more of the related listed items.

[0039] This application provides an air conditioning system for meeting indoor temperature regulation, such as heating in winter, cooling in summer, etc.; wherein, in order to realize the switching between the cooling mode and the heating mode of the air conditioning system, a valve device is needed to adjust the refrigerant flow direction.

[0040] Please refer to Figures 1 to 7 As shown, this embodiment provides a valve device 100, which includes a valve body 20, an adjusting structure 50 and a valve core structure 10. Among them, in terms of the valve body 20 itself, the valve body 20 is configured with a valve cavity 201 and a feed port 202 and a discharge port 203 communicating with the valve cavity 201. In this embodiment, the feed port 202 and the discharge port 203 are spaced along the axis of the valve body 20 and arranged at an angle, and a valve port 205 is configured in the valve cavity 201 between the feed port 202 and the discharge port 203. Among them, the number of the discharge ports 203 is at least two and they are arranged at intervals around the axis of the valve body 20. An adjusting structure 50 is correspondingly installed at each discharge port 203, and each adjusting structure 50 has a top contact rod 51. During actual use, the opening and closing of the adjusting structure 50 are adjusted by interfering with the depth of the top contact rod 51. The valve core structure 10 is located in the valve cavity 201 and is movably connected to the valve body 20. The valve core structure 10 can abut against the valve port 205 or move away from the valve port 205 to adjust the on-off of the feed port 202 and the discharge port 203, and the valve core structure 10 can rotate around its own axis when moving, so that the first top contact side 121 and the second top contact side 122 of the valve core structure 10 selectively abut against the top contact rod 51, thereby switching the opening and closing of each adjusting structure 50.

[0041] In actual use, the axial direction of the feed port 202 is the same as the axial direction of the valve body 20, and the axial direction of the discharge port 203 is set at an angle to the axial direction of the valve body 20. At this time, the valve core structure 10 can move along the axial direction of the valve body 20 in the valve cavity 201 to get close to and block or move away from and open the valve port 205, so as to achieve the on-off adjustment of the discharge port 203 and the feed port 202. At the same time, when the valve core structure 10 moves to the state where the discharge port 203 and the feed port 202 are connected, the valve core structure 10 can also rotate around its own axis, so that the first top contact side 121 and the second top contact side 122 of the valve core structure 10 can selectively contact the top contact rod 51.

[0042] See also Figure 1 , Figure 2 and Figure 4 Furthermore, considering the connection of the valve device 100 to the pipeline, the valve device 100 also includes a feed pipe 30 and a discharge pipe 40. The feed pipe 30 is connected to the feed port 202, and each discharge port 203 is connected to a corresponding discharge pipe 40. Each adjustment structure 50 is installed on the corresponding discharge pipe 40 to adjust the on-off of the corresponding discharge pipe 40. At the same time, considering the connection stability, the valve device 100 is extended with an extension pipe section 21 at the feed port 202 and each discharge port 203, and one end of each extension pipe section 21 away from the valve cavity 201 is defined as the feed port 202 or the discharge port 203. The provision of the extension pipe section 21 facilitates the insertion of one end of the feed pipe 30 and the discharge pipe 40 to ensure the contact area.

[0043] See also Figures 3 to 9 As shown, in an optional embodiment, the valve core structure 10 includes an adjusting section 12 and a second blocking section 112 connected to one end of the adjusting section 12, and the second blocking section 112 and the adjusting section 12 are arranged along the axial direction of the valve core structure 10, and the second blocking section 112 can abut against the valve port 205 to block the valve port 205. The adjusting section 12 is provided with a first top contact side 121 and a second top contact side 122 along the circumference of the valve core structure 10, and the cross-sectional diameter of the first top contact side 121 is greater than the cross-sectional diameter of the second top contact side 122.

[0044] That is to say, precisely because the cross-sectional diameter of the first top contact side 121 is larger than that of the second top contact side 122, the first top contact side 121 protrudes radially with respect to the valve core structure 10 compared to the second top contact side 122. Then, when the valve core structure 10 is located in the valve cavity 201, the distance between the first top contact side 121 and the wall of the valve cavity 201 is smaller than the distance between the second top contact side 122 and the wall of the valve cavity 201. Therefore, when the valve core structure 10 is in top contact and fit with the top contact rod 51, the corresponding fit positions of the first top contact side 121 and the second top contact side 122 are different, and the corresponding fit position of the first top contact side 121 protrudes more radially with respect to the valve core structure 10 than the corresponding fit position of the second top contact side 122. Thus, when the first top contact side 121 and the second top contact side 122 of the valve core structure 10 respectively contact the top contact rod 51 of the adjusting structure 50, the displacement of the top contact rod 51 along the axial direction of the discharge port can be adjusted to meet the opening and closing of the adjusting structure 50.

[0045] During actual use, since the corresponding fit position of the first top contact side 121 protrudes more radially with respect to the valve core structure 10 than the corresponding fit position of the second top contact side 122, therefore: when the first top contact side 121 abuts against one of the top contact rods 51, it causes the top contact rod 51 to move along the axial direction of the corresponding discharge connection pipe 40 towards the side close to the corresponding discharge port 203 (i.e., the side away from the valve cavity 201), so that the corresponding adjusting structure 50 is opened, and the corresponding discharge connection pipe 40 is in a connected state to facilitate the normal flow of the fluid; at this time, the other top contact rod 51 contacts the second top contact side 122 of the valve core structure 10, and this top contact rod 51 will move towards the side away from the corresponding discharge port 203 (i.e., the side close to the valve cavity 201), so that the corresponding adjusting structure 50 is closed, thereby blocking the fluid flow in the corresponding discharge connection pipe 40.

[0046] In some specific embodiments, the first top contact side 121 and the second top contact side 122 have a smooth transition. Therefore, as the valve core structure 10 rotates, the driving force for the movement of the top contact rod 51 also changes stably, avoiding the sudden opening and sudden closing of the adjusting structure 50 and improving the use safety. At the same time, when the valve core structure 10 rotates and causes the top contact rod 51 to move from the first top contact side 121 towards the second top contact side 122, the adjusting structure 50 gradually closes, and vice versa, it gradually opens.

[0047] Please continue to combine Figures 3 to 7Optionally, the regulating structure 50 further includes a conduit 52, an elastic member 53 and a blocking plate 54. The conduit 52 is connected to the discharge pipe 40, and the two are sealed to prevent air leakage. The blocking plate 54 is arranged at one end of the conduit 52 away from the valve core structure 10. The top-touch rod 51 is arranged in the lumen of the conduit 52 and connected to the blocking plate 54 to drive the blocking plate 54 to move synchronously. The elastic member 53 is located in the lumen of the conduit 52 and is sleeved on the outside of the top-touch rod 51. One end of the elastic member 53 is connected to the inner wall of the conduit 52, and the other end is connected to the top-touch rod 51. The top-touch rod 51 moves linearly relative to the conduit 52 to drive the blocking plate 54 to block or open the pipe opening of the conduit 52, so as to realize the opening and closing regulation of the regulating structure 50. At the same time, the setting of the elastic member 53 applies a force to the top-touch rod 51 to move toward the valve core structure 10. The side of the top-touch rod 51 facing the valve core structure 10 can be set to a curved surface to reduce wear on the valve core structure 10. In actual use, the top-touch rod 51 can be convexly provided with a first limiting protrusion, and the inner tube wall of the conduit 52 can be convexly provided with a second limiting protrusion to meet the assembly of the elastic member 53.

[0048] In an optional embodiment, the first top-contact side 121 and the second top-contact side 122 can be arranged relatively along the radial direction of the valve core structure 10, and in this case, the valve core structure 10 needs to be rotated 180 degrees relative to the valve body 20. At this time, the two discharge ports 203 are also arranged relatively along the radial direction of the valve body 20, so that when the top-contact rod 51 of the adjustment structure 50 at one of the discharge ports 203 contacts the first top-contact side 121, the top-contact rod 51 of the adjustment structure 50 at the other discharge port 203 contacts the second top-contact side 122. Of course, the first top-contact side 121 and the second top-contact side 122 can also be arranged at an angle less than 180 degrees, in which case the arrangement positions of the two discharge ports 203 are adapted thereto, and when in use, the valve core structure 10 only needs to be rotated by the corresponding angle between the two.

[0049] It should be noted that, with regard to the adjusting section 12 of the valve core structure 10, since the first top contact side 121 and the second top contact side 122 smoothly transition along the circumference of the valve core structure 10, the position with the largest radius of the cross section corresponding to the adjusting section 12 is defined as the first top contact side 121, and the position with the smallest radius of the cross section is defined as the second top contact side 122.

[0050] Please combine Figures 3 to 9, illustratively, along the axial direction of the valve core structure 10, the cross section of the regulating section 12 is an ellipse, the first top contact side 121 corresponds to the long axis of the ellipse, and the second top contact side 122 corresponds to the short axis of the ellipse. At this time, the valve core structure 10 has two opposite first top contact sides 121 and two opposite second top contact sides 122, and the four are staggered and arranged at intervals along the circumference of the valve core structure 10. The angle between the first top contact side 121 and the second top contact side 122 is 90 degrees. At this time, the two discharge ports 203 are arranged at intervals around the axis of the valve body 20 and are set at an angle of 90 degrees.

[0051] When the valve device 100 is applied to an air conditioning system, the feed pipe 30 of the valve device 100 is connected to the exhaust pipe of the compressor, and the two discharge pipes 40 of the valve device 100 are connected to the indoor heat exchanger and the outdoor heat exchanger, respectively. At this time, the valve core structure 10 can be rotated to adjust the opening and closing of the corresponding adjustment structure 50 in each discharge pipe 40, which not only realizes the flow direction adjustment of the refrigerant flowing through the compressor relative to the indoor heat exchanger and the outdoor heat exchanger, but also ensures that when it flows to one side of the heat exchanger, the other side of the heat exchanger and the corresponding discharge port 203 are in a disconnected state, ensuring the normal operation of the air conditioning system. For example, the first discharge pipe is connected to the indoor heat exchanger, corresponding to the first adjustment structure and the first top touch rod, and the second discharge pipe is connected to the outdoor heat exchanger, corresponding to the second adjustment structure and the second top touch rod. Then, when the first top-touch rod touches the first top-touch side 121 of the valve core structure 10, the second top-touch rod touches the second top-touch side 122 of the valve core structure 10. At this time, the refrigerant flowing through the compressor flows to the indoor heat exchanger through the first discharge pipe for heating cycle; conversely, when the first top-touch rod touches the second top-touch side 122 and the second top-touch rod touches the first top-touch side 121, the refrigerant flowing through the compressor flows to the outdoor heat exchanger through the second discharge pipe for refrigeration cycle. At the same time, when cooling or heating is not needed, the valve core structure 10 can also be adjusted to move axially along the valve body 20 to block the valve port 205 to cut off the connection between the feed port 202 and the discharge port 203, and close the refrigerant circulation in the air-conditioning system.

[0052] like Figures 1 to 7 As shown, in some embodiments, the valve body 20 is provided with openings at both ends along its own axial direction, and both openings are connected to the valve cavity 201, one of the openings is used as the feed port 202, and the other end opening is used for the valve core structure 10 to be loaded and unloaded relative to the valve cavity 201, which is called the assembly end 204. At this time, the end of the regulating section 12 along the axial direction of the valve core structure 10 away from the second blocking section 112 is also connected to the first blocking section 111, and the second blocking section 112 extends into the valve cavity 201 to block the valve port 205, so as to realize the on-off adjustment of the feed port 202 and the discharge port 203, and the first blocking section 111 is installed at a position close to the assembly end 204, and is sealed with the cavity wall of the valve cavity 201 to prevent the fluid from leaking from the assembly end 204 of the valve body 20.

[0053] Wherein, the feed inlet 202 and the discharge outlet 203 are axially spaced along the valve body 20, and the valve core structure 10 can move axially within the valve cavity 201 to meet the on-off adjustment of the feed inlet 202 and the discharge outlet 203.

[0054] As Figures 3 to 9 shown, in an alternative embodiment, the diameter of the first sealing section 111 is larger than the diameter of the second sealing section 112. Thus, the corresponding valve cavity 201 can be arranged in a stepped shape. Specifically, it is stepped and reduced from the assembly end 204 towards the feed inlet 202. Such a setting facilitates the assembly of the valve core structure 10 into the valve body 20 and reduces the collision and wear of the second sealing section 112 and the adjustment section 12 during the assembly process.

[0055] At this time, the diameter of the first sealing section 111 is not less than the major axis dimension b of the adjustment section 12 to avoid interference between the adjustment section 12 and the assembly end 204 during assembly and wear of the adjustment section 12. In some specific embodiments, the diameter of the first sealing section 111 is the same as the major axis dimension b of the ellipse. Thus, while ensuring that the first sealing section 111 is adapted to the diameter of the valve cavity 201 for sealing, the movement amount of the top contact rod 51 is ensured, facilitating the adjustment structure 50 to be opened to the maximum extent. In an alternative embodiment, the major axis dimension b of the adjustment section 12 can also be less than the diameter of the first sealing section 111, as long as it can ensure that the adjustment structure 50 is opened.

[0056] Furthermore, the major axis dimension b of the adjustment section 12 is larger than the diameter of the second sealing section 112 to adapt to the size setting of the valve cavity 201.

[0057] Please refer to Figures 3 to 10 , during actual use, since the minor axis dimension a of the adjustment section 12 is less than the diameter of the first sealing section 111, two first limiting end faces 101 spaced 180 degrees can be formed between the first sealing section 111 and the adjustment section 12; meanwhile, the diameter of the second sealing section 112 is larger than the minor axis dimension a of the adjustment section 12, such that two second limiting end faces 102 spaced 180 degrees are formed between the second sealing section 112 and the adjustment section 12. The first limiting end face 101 and the second limiting end face 102 are both arranged towards the adjustment section 12.

[0058] Please combine with Figures 1 to 7In an optional embodiment, along the axial direction of the valve body 20, the valve body 20 is provided with a limit retaining ring 70 at the assembly end 204, and the limit retaining ring 70 can abut against the valve core structure 10 to limit the axial movement of the valve core structure 10. At this time, the spacing between the limit retaining ring 70 and the valve port 205 is the first spacing, and the spacing between the first limit end face 101 and the second limit end face 102 is the second spacing, and the difference between the first spacing and the axial length of the valve core structure 10 is less than the second spacing. Such a setting ensures that when the valve core structure 10 moves along the axial direction of the valve body 20, the limit retaining ring 70 is used for limiting first, and the top contact rod 51 and the valve core structure 10 are avoided as much as possible to affect the structural reliability of the adjustment structure 50. Among them, the first spacing is greater than the axial length of the valve core structure 10, and the difference between the two is the moving stroke of the valve core structure 10 in the valve cavity 201, so the moving stroke of the valve core structure 10 should be less than the second spacing.

[0059] like Figures 3 to 8 and Figure 10 In actual use, the first blocking section 111 also includes an assembly section body 1111. The assembly section body 1111 is arranged away from the second blocking section 112 along the axial direction of the valve core structure 10. The assembly section body 1111 is configured with a sealing groove 1112. The sealing groove 1112 is recessed radially inward from the outer peripheral surface of the assembly section body 1111. A sealing ring 80 can be installed in the sealing groove 1112. The sealing ring 80 is pressed between the groove wall of the sealing groove 1112 and the cavity wall forming the valve cavity 201 along its radial direction to meet the sealing of the two and prevent fluid leakage.

[0060] In a replaceable embodiment, at least two sealing protrusions are radially protruding outward from the outer circumferential surface of the self-assembly segment 1111, and the at least two sealing protrusions are arranged axially at intervals along the assembly segment 1111 and together with the assembly segment 1111 define a sealing groove 1112, and the outer circumferential surface of each sealing protrusion is in contact with the cavity wall of the valve cavity 201.

[0061] Furthermore, a conical surface 1121 is configured at one end of the second blocking section 112 away from the first blocking section 111 , and the conical surface 1121 is gradually reduced from the first blocking section 111 toward the second blocking section 112 , so as to block the valve port 205 .

[0062] See also Figure 8 and Figure 10 In some specific embodiments, in actual use, the valve core structure 10 is further configured with an operating hole 103, which is recessed from the end surface of the assembly segment 1111 to facilitate connection with an operating structure for driving the valve core structure 10 to move. The projection of the operating hole 103 can be a hexagon to improve the reliability of the connection with the operating structure and avoid problems such as slipping between the two.

[0063] In an alternative embodiment, the discharge port 203 may also be provided with three. Among them, two discharge ports 203 are arranged opposite to each other along the radial direction of the valve body 20. These two opposite discharge ports 203 can be connected to the indoor-side heat exchanger simultaneously, while the other discharge port 203 is connected to the outdoor-side heat exchanger. At this time, when the valve core structure 10 is provided with two opposite first contact sides 121 and two opposite second contact sides 122, and the four are staggered and spaced around the axis of the valve core structure 10. Therefore, when the valve core structure 10 rotates around its own axis, the contact rods 51 of the adjustment structures 50 corresponding to the two opposite discharge ports 203 can simultaneously contact the corresponding first contact side 121 or the corresponding second contact side 122.

[0064] Optionally, a limiting structure may be provided between the valve core structure 10 and the valve body 20 to limit the axial rotation angle of the valve core structure 10 by means of the setting of the limiting structure, thereby improving the adjustment accuracy. Among them, the limiting structure may be a marking reference line. For example, a first marking reference line is provided at one end of the valve core structure 10 facing the assembly end 204 and along the direction of the first contact side 121, and second marking reference lines are respectively provided at positions on the valve body 20 adapted to the two discharge connecting pipes 40. When the first marking reference line is aligned with one of the second marking reference lines, it means that the rotation is in place.

[0065] In an alternative embodiment, the limiting structure may also be the cooperation of a limiting block and a limiting groove. A limiting groove may be provided at a position on the valve core structure 10 corresponding to the first contact side 121, and limiting blocks are respectively provided at positions on the valve body 20 adapted to the two discharge connecting pipes 40. When the limiting block is clamped in the limiting groove, it means that the rotation is in place. Among them, the limiting convex may be hemispherical, and the limiting groove is a spherical groove. Of course, an angle sensor may also be used for rotation limiting. A baffle may be connected to the valve core structure 10, and the angle sensor is installed on the valve body 20. When the valve core structure 10 rotates in place, the angle sensor at the corresponding position can be triggered. Only examples are given here.

[0066] As Figure 1 、 Figure 2 、 Figures 4 to 7 As shown, in some embodiments, the valve device 100 further includes a fixing seat 60 installed on the valve body 20. The length of the fixing seat 60 extends along the radial direction of the valve body 20 to facilitate fixing the valve device 100 in the usage environment of the heat exchange unit. Among them, the fixing seat 60 includes two connecting arms 61, which are separately arranged along the radial direction of the valve body 20, and each connecting arm 61 is constructed with a connecting hole 6101.

[0067] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described 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 described in this specification.

[0068] The above-described embodiments merely represent several implementation manners of the present application. The description 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 still be made, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. A valve device, characterized in that, The valve device (100) comprises a valve body (20), a valve core structure (10) and an adjustment structure (50); The valve body (20) is constructed with a valve cavity (201), a feed port (202) connected to the valve cavity (201), and at least two discharge ports (203); the feed port (202) and each of the discharge ports (203) are spaced apart and arranged at an angle along the axial direction of the valve body (20); a valve port (205) is constructed in the valve cavity (201) and is located between the feed port (202) and each of the discharge ports (203); one of the adjustment structures (50) is correspondingly installed at each of the discharge ports (203); each of the adjustment structures (50) has a top contact rod (51); The valve core structure (10) is movably arranged in the valve cavity (201), and the valve core structure (10) can abut against the valve port (205) or move away from the valve port (205) to adjust the opening and closing of the feed port (202) and the discharge port (203); The valve core structure (10) comprises an adjusting section (12), wherein the adjusting section (12) is provided with a first top contact side (121) and a second top contact side (122) along the circumference of the valve core structure (10), and the cross-sectional diameter of the first top contact side (121) is greater than the cross-sectional diameter of the second top contact side (122); In which, the valve core structure (10) is able to rotate around its own axis when moving in the valve cavity (201), and each of the top-touch rods (51) is configured to selectively touch one of the first top-touch side (121) and the second top-touch side (122) in response to the rotation of the valve core structure (10) to switch the opening and closing of the corresponding adjustment structure (50).

2. The valve device according to claim 1, characterized in that, When the top-contact rod (51) contacts the first top-contact side (121), the regulating structure (50) is opened; when the top-contact rod (51) contacts the second top-contact side (122), the regulating structure (50) is closed.

3. The valve device according to claim 2, characterized in that, The regulating structure (50) further comprises a catheter (52), an elastic member (53) and a blocking plate (54); the top-touch rod (51) is inserted into the lumen of the catheter (52); the elastic member (53) is sleeved on the top-touch rod (51) and is located in the lumen; two ends of the elastic member (53) are respectively connected to the catheter (52) and the top-touch rod (51); and the blocking plate (54) is connected to one end of the top-touch rod (51) that is away from the valve core structure (10); The top-touch rod (51) is configured to move axially along the conduit (52) in response to the rotation of the valve core structure (10), and the blocking plate (54) can move synchronously with the top-touch rod (51) to block or open the conduit (52).

4. The valve device according to any one of claims 1 to 3, characterized in that, Along the axial direction of the valve core structure (10), the cross-section of the regulating section (12) is elliptical, the first top-contact side (121) corresponds to the major axis of the ellipse, and the second top-contact side (122) corresponds to the minor axis of the ellipse.

5. The valve device according to claim 4, characterized in that, Both ends of the valve body (20) along its own axis are provided with openings communicating with the valve cavity (201), one of the openings serving as the feed port (202), and the other opening serving as the assembly end (204); Axially along the valve core structure (10), the valve core structure (10) further includes a first sealing section (111) and a second sealing section (112) connected to both ends of the adjusting section (12). The first sealing section (111) is close to the assembly end (204) and is hermetically arranged with the cavity wall forming the valve cavity (201). The second sealing section (112) is close to the valve port (205), and the second sealing section (112) can abut against the valve port (205).

6. The valve device according to claim 5, characterized in that, The diameter of the first sealing section (111) is larger than the diameter of the second sealing section (112), and the diameter of the first sealing section (111) is not less than the major axis dimension of the adjusting section (12).

7. The valve device according to claim 6, characterized in that, The major axis dimension of the adjusting section (12) is equal to the diameter of the first sealing section (111); and / or, the diameter of the second sealing section (112) is larger than the minor axis dimension of the adjusting section (12).

8. The valve device according to claim 6, characterized in that, Axially along the valve body (20), a limit retaining ring (70) is installed at the assembly end (204) of the valve body (20). The limit retaining ring (70) can abut against the valve core structure (10) to limit the axial movement of the valve core structure (10); The distance between the limit retaining ring (70) and the valve port (205) is a first distance. A first limiting end face (101) is formed between the first sealing section (111) and the adjusting section (12), and a second limiting end face (102) is formed between the second sealing section (112) and the adjusting section (12). The distance between the first limiting end face (101) and the second limiting end face (102) is a second distance. The difference between the first distance and the axial length of the valve core structure (10) is less than the second distance.

9. The valve device according to claim 5, characterized in that, The first sealing section (111) includes an assembly section body (1111). Axially along the valve core structure (10), the assembly section body (1111) is arranged away from the second sealing section (112). The assembly section body (1111) is provided with a sealing groove (1112). A sealing ring (80) is installed in the sealing groove (1112), and the sealing ring (80) is pressed between the sealing groove (1112) and the cavity wall forming the valve cavity (201); The sealing groove (1112) radially indents inward from the outer peripheral surface of the assembly section body (1111); or, at least two sealing protrusions protrude radially outward from the outer peripheral surface of the assembly section body (1111). The at least two sealing protrusions are arranged at intervals along the axis of the assembly section body (1111) and jointly define the sealing groove (1112) with the assembly section body (1111).

10. The valve device according to claim 1, characterized in that, The valve device (100) further includes a feed connection pipe (30) and a discharge connection pipe (40). The feed connection pipe (30) is connected to the feed port (202), and each discharge port (203) is correspondingly connected to a discharge connection pipe (40). Each of the adjustment structures (50) is installed on the corresponding discharge connection pipe (40) for adjusting the on-off state of the corresponding discharge connection pipe (40).

11. An air conditioning system, characterized in that, Comprising the valve device according to any one of claims 1 to 10.

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