Valve element structure and reversing valve

Abstract

The utility model relates to the technical field of reversing valves, in particular to a valve element structure and a reversing valve. The valve element structure comprises a main body part and a rotating column, the main body part is provided with a circulation cavity and a first opening and a second opening communicating with the circulation cavity, and the second opening is eccentrically arranged relative to the first opening. The rotating column is arranged outside the circulation cavity and connected with the main body part, the rotating column and the first opening are coaxially arranged, the axis of the rotating column is defined as a rotating shaft, the main body part can rotate around the rotating shaft, and the mass center of the valve element structure is located on the rotating shaft. According to the valve element structure and the reversing valve, the problem that an existing valve element structure is high in driving cost is solved.

Description

Technical Field

[0001] The present application relates to the technical field of reversing valves, and in particular to a valve core structure and a reversing valve. Background Art

[0002] The reversing valve is an important component in the air-conditioning system. It includes a valve body and a valve core. The valve core is arranged in the valve body, and the valve core can rotate around the axis relative to the valve body to connect different flow ports on the valve body, thereby switching the flow direction of the refrigerant and realizing the conversion between cooling and heating modes.

[0003] In order to ensure that the valve core can rotate smoothly for switching, it is usually necessary to design a larger torque for driving the valve core to rotate, which leads to increased costs. Utility Model Content

[0004] Based on this, it is necessary to provide a valve core structure and a reversing valve to solve the problem of high driving cost of the existing valve core structure.

[0005] The present application provides a valve core structure, which includes a main body and a rotating column, the main body is provided with a flow cavity and a first opening and a second opening connected to the flow cavity, the second opening is eccentrically arranged relative to the first opening; the rotating column is arranged outside the flow cavity and connected to the main body, and the rotating column and the first opening are coaxially arranged, and the axis of the rotating column is defined as the rotation axis, wherein the main body can rotate around the rotation axis, and the center of mass of the valve core structure is on the rotation axis.

[0006] In one embodiment, the valve core structure further includes a counterweight portion, which is disposed around the circumference of the rotating column; wherein the counterweight portion can balance the weight of the main body and the rotating column so that the center of mass of the valve core structure is located on the rotating axis.

[0007] In one embodiment, the counterweight portion includes a base, which is disposed around the circumference of the rotating column and connected to the main body.

[0008] In one embodiment, the base includes an arc segment and a transition segment, the arc segment is arranged in an arc shape, and along the direction of the rotation axis, one end of the arc segment is connected to the main body, and the other end is spaced apart from the outer wall of the main body at the second opening; the transition segment connects the main body and the arc segment respectively.

[0009] In one embodiment, the counterweight portion includes a reinforcing rib connected to the main body portion or the rotating column.

[0010] In one embodiment, there are multiple reinforcing ribs, and the multiple reinforcing ribs are arranged at intervals along the circumference of the rotating column.

[0011] In one embodiment, the main body, the rotating column and the counterweight are an integrated structure.

[0012] In one embodiment, an annular step is formed on an outer side wall of the main body at the second opening.

[0013] The present application also provides a reversing valve, which includes a valve body and a valve core structure as described in any one of the above embodiments, wherein the valve body is provided with a first flow port, a second flow port and a third flow port, the valve core structure is rotatably disposed in the valve body, and one end of the main body provided with the first opening is rotatably connected to the first flow port, and one end of the main body provided with the second opening can selectively connect to the second flow port or the third flow port.

[0014] In one embodiment, the valve body is further provided with a positioning hole, and the positioning hole is arranged between the second flow port and the third flow port; wherein the positioning hole and the first flow port are coaxially arranged, and the rotating column is inserted into the positioning hole and rotatably cooperates with the positioning hole.

[0015] Compared with the prior art, the valve core structure and reversing valve provided by the present application can eliminate the rotation caused by the center of mass when the valve core structure rotates by setting the center of mass of the valve core structure on the rotating shaft, thereby avoiding increasing the torque driving the valve core structure to rotate, thereby greatly reducing the driving cost. At the same time, the coordination between the valve core structure and other components is more reliable, reducing the probability of refrigerant leakage and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic structural diagram of a valve core structure according to an embodiment of the present application;

[0018] Figure 2 A side view of a valve core structure according to an embodiment of the present application;

[0019] Figure 3 A cross-sectional view of a valve core structure according to an embodiment of the present application;

[0020] Figure 4 An exploded view of a reversing valve according to an embodiment of the present application.

[0021] The symbols in the figure mean the following:

[0022] 100. reversing valve; 10. valve body; 101. valve cavity; 102. first flow port; 103. second flow port; 104. third flow port; 105. fourth flow port; 106. positioning hole; 20. valve core structure; 201. flow cavity; 202. first opening; 203. second opening; 204. accommodating cavity; 21. main body; 211. annular step; 22. rotating column; 23. counterweight; 231. base; 2311. arc segment; 2312. transition segment; 232. reinforcing rib; 30. sealing member. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth 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 violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0024] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification 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 specification of this application includes any and all combinations of one or more related listed items.

[0028] The reversing valve is an important component in the air conditioning system. It includes a valve body and a valve core. The valve core is arranged in the valve body and can rotate relative to the valve body to connect different flow ports on the valve body, thereby switching the flow direction of the refrigerant and realizing the conversion between cooling and heating modes. In order to ensure that the valve core can rotate smoothly for reversing, it is usually necessary to design a larger torque to drive the valve core to rotate, which increases the cost.

[0029] In the related art, in order to achieve reversal, the valve core is usually designed with an irregular structure. After the reversing valve is installed, the rotation axis of the valve core is usually placed horizontally. When the valve core rotates around the horizontal rotation axis, it will be affected by gravity and tend to rotate in one direction, affecting the normal rotation of the valve core. In order to overcome the rotation caused by gravity, the torque driving the valve core to rotate needs to be increased, which greatly increases the cost.

[0030] See also Figure 1-Figure 4 In order to solve the problem of high driving cost of the existing valve core structure, the present application provides a valve core structure 20, which is rotatably arranged in the valve body 10 of the reversing valve 100, wherein the valve body 10 is provided with a first flow port 102, a second flow port 103 and a third flow port 104, the first flow port 102 is arranged at one end of the valve body 10, and the second flow port 103 and the third flow port 104 are arranged at the other end of the valve body 10. One end of the valve core structure 20 is rotatably connected to the first flow port 102, and the other end can be selectively connected to the second flow port 103 or the third flow port 104, so as to realize the switching of the refrigerant flow direction.

[0031] See also Figure 1-Figure 3The valve core structure 20 provided in the present application includes a main body 21 and a rotating column 22. The main body 21 is provided with a circulation cavity 201 and a first opening 202 and a second opening 203 communicating with the circulation cavity 201. The second opening 203 is eccentrically arranged relative to the first opening 202. The rotating column 22 is arranged outside the circulation cavity 201 and connected to the main body 21. The rotating column 22 and the first opening 202 are coaxially arranged, and the axis of the rotating column 22 is defined as the rotation axis, wherein the main body 21 can rotate around the rotation axis, and the center of mass of the valve core structure 20 is on the rotation axis.

[0032] It is understandable that by arranging the centroid of the valve core structure 20 on the rotating shaft, the rotation caused by the centroid can be eliminated when the valve core structure 20 rotates, thereby avoiding increasing the torque driving the valve core structure 20 to rotate, thereby greatly reducing the driving cost. At the same time, the cooperation between the valve core structure 20 and other components is more reliable, reducing the probability of refrigerant leakage and improving safety.

[0033] In one embodiment, if Figure 1 and Figure 2 As shown, the valve core structure 20 also includes a weight portion 23, which is disposed around the rotating column 22 and connected to the main body 21. The weight portion 23 can balance the weight of the main body 21 and the rotating column 22 so that the center of mass of the valve core structure 20 is located on the rotation axis.

[0034] Since the first opening 202 and the second opening 203 of the main body 21 are eccentrically arranged, the portion of the main body 21 close to the second opening 203 will deviate from the rotation axis, so that the center of mass of the main body 21 is also biased toward one side of the rotation axis. At this time, by adding a counterweight 23 on the other side of the rotation axis, the center of mass of the valve core structure 20 as a whole can coincide with the rotation axis, thus effectively eliminating the rotation caused by the center of mass and improving the movement accuracy of the valve core structure 20.

[0035] Furthermore, in one embodiment, the weight portion 23 includes a base 231 , which is disposed around the rotating column 22 and connected to the main body 21 to achieve overall weight balancing.

[0036] In another embodiment, the counterweight portion 23 includes a reinforcing rib 232 , and the reinforcing rib 232 is connected to the main body 21 or the rotating column 22 , so that overall weight balancing is achieved through the reinforcing rib 232 .

[0037] In yet another embodiment, Figure 1 and Figure 3As shown, the counterweight part 23 may also include a base 231 and a reinforcing rib 232, wherein the base 231 is connected to the main body 21 and forms a receiving cavity 204 with the main body 21. The reinforcing rib 232 is disposed in the receiving cavity 204, wherein the reinforcing rib 232 connects the rotating column 22 and the main body 21, or the reinforcing rib 232 connects the rotating column 22 and the base 231. Through the cooperation of the reinforcing rib 232 and the base 231, it is possible to ensure that the center of mass of the valve core structure 20 is located on the rotating axis, and at the same time, the overall structural strength of the valve core structure 20 can be improved.

[0038] The present application specifically describes a structure in which the counterweight portion 23 includes both a base 231 and a reinforcing rib 232 .

[0039] Specifically, in one embodiment, there are multiple reinforcing ribs 232, and the multiple reinforcing ribs 232 are arranged at intervals along the circumference of the rotating column 22. By reasonably setting the number and arrangement of the reinforcing ribs 232, compared with adding a counterweight only on the side of the rotating shaft that needs to be balanced (for example, on the base 231), the structural strength of the rotating column 22 can be further improved.

[0040] Exemplarily, the present application provides four reinforcing ribs 232, and the four reinforcing ribs 232 are distributed in a cross shape on the circumferential side of the rotating column 22. Of course, in other embodiments, the number of reinforcing ribs 232 can also be set to three, five or six, etc., as long as they can cooperate with the base 231 to achieve the balancing of the overall weight of the valve core structure 20.

[0041] In one embodiment, if Figure 1 and Figure 2 As shown, the base 231 includes an arc segment 2311 and a transition segment 2312. The arc segment 2311 is arranged in an arc shape, and along the direction of the rotation axis, one end of the arc segment 2311 is connected to the main body 21, and the other end is spaced from the outer wall of the main body 21 at the second opening 203. The transition segment 2312 connects the main body 21 and the arc segment 2311 respectively, so that the transition segment 2312, the arc segment 2311 and the main body 21 can enclose the accommodating cavity 204.

[0042] By setting one side of the base 231 as the arc segment 2311, the processing of the base 231 is facilitated, and the movement resistance of the outer surface of the base 231 and the refrigerant can be reduced when the valve core structure 20 rotates. The transition section 2312 can increase the contact area between the arc segment 2311 and the main body 21, thereby improving the reliability of the connection between the base 231 and the main body 21.

[0043] In order to further improve the overall structural strength of the valve core structure 20 , in one embodiment, the main body 21 , the rotating column 22 and the counterweight 23 may be configured as an integrated structure.

[0044] The present application also provides a reversing valve 100, which is mainly used in air-conditioning systems. The reversing valve 100 includes a valve body 10 and a valve core structure 20 of any one of the above embodiments. One end of the main body 21 with a first opening 202 is rotatably connected to the first flow port 102, and one end of the main body 21 with a second opening 203 can be selectively connected to the second flow port 103 or the third flow port 104, so as to realize the switching of the refrigerant flow channel by the valve core structure 20 and realize the conversion of the cooling and heating functions.

[0045] Furthermore, in one embodiment, the valve body 10 is further provided with a positioning hole 106, which is provided between the second flow port 103 and the third flow port 104. The positioning hole 106 and the first flow port 102 are coaxially arranged, and the rotating column 22 is inserted into the positioning hole 106 and rotatably cooperates with the positioning hole 106. The positioning hole 106 serves to install the rotating column 22, so as to support the rotation center of the valve core structure 20, and further improve the reliability of the valve core structure 20 when rotating.

[0046] In one embodiment, if Figure 4 As shown, the valve body 10 is further provided with a fourth flow port 105, which is provided on the side wall of the valve body 10. The fourth flow port 105 is communicated with the second flow port 103 or the third flow port 104, thereby achieving communication of the entire circuit.

[0047] Specifically, in this embodiment, the valve body 10 is further provided with a valve cavity 101. The fourth flow port 105 is the inlet of the valve cavity 101, which is communicated with the outlet of the compressor. The first flow port 102 is the outlet of the flow cavity 201 in the valve core structure 20, which is communicated with the inlet of the compressor. In addition, the second flow port 103 and the third flow port 104 are both connected to the corresponding heat exchanger.

[0048] This application is specifically described by taking the example that the second flow port 103 is connected to the indoor heat exchanger and the third flow port 104 is connected to the outdoor heat exchanger.

[0049] When the air-conditioning system is in a cooling state, the high-pressure refrigerant flowing out of the compressor outlet enters the valve cavity 101 from the fourth flow port 105 of the reversing valve 100. At this time, the flow cavity 201 of the valve core structure 20 is connected to the first flow port 102 and the second flow port 103. Therefore, the high-pressure refrigerant in the valve cavity 101 flows out from the third flow port 104, and is converted into low-pressure refrigerant through heat exchange in the outdoor heat exchanger and the indoor heat exchanger in turn, and then flows into the inlet of the compressor from the second flow port 103, the flow cavity 201 and the first flow port 102, thereby realizing a refrigeration cycle.

[0050] When the air-conditioning system is in the heating state, the high-pressure refrigerant flowing out of the compressor outlet enters the valve cavity 101 from the fourth flow port 105 of the reversing valve 100. At this time, the flow cavity 201 of the valve core structure 20 is connected to the first flow port 102 and the third flow port 104. Therefore, the high-pressure refrigerant in the valve cavity 101 flows out from the second flow port 103, and is converted into low-pressure refrigerant through the indoor heat exchanger and the outdoor heat exchanger in turn, and then flows into the inlet of the compressor from the third flow port 104, the flow cavity 201 and the first flow port 102, thereby realizing a heating cycle.

[0051] Among them, in order to ensure the sealing performance when the valve core structure 20 is connected to the second flow port 103 or the third flow port 104, and to prevent internal leakage caused by mixing of internal high-pressure refrigerant and low-pressure refrigerant, a seal 30 can be set at the second opening 203 of the main body 21. Here, the seal 30 can be set to one or more, and can be reasonably set according to actual needs.

[0052] Furthermore, to facilitate installation of the seal 30 , an annular step 211 may be provided on the outer wall of the main body 21 at the second opening 203 , and the seal 30 may be sleeved on the annular step 211 to improve installation reliability of the seal 30 .

[0053] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, 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, they should be considered to be within the scope of this specification.

[0054] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A valve core structure, characterized in that: The invention comprises a main body (21) and a rotating column (22), wherein the main body (21) is provided with a circulation cavity (201) and a first opening (202) and a second opening (203) which are communicated with the circulation cavity (201), and the second opening (203) is eccentrically arranged relative to the first opening (202); The rotating column (22) is arranged outside the circulation cavity (201) and is connected to the main body (21), and the rotating column (22) and the first opening (202) are coaxially arranged, and the axis of the rotating column (22) is defined as the rotating axis, wherein the main body (21) can rotate around the rotating axis, and the center of mass of the valve core structure is on the rotating axis.

2. The valve core structure according to claim 1, characterized in that: The valve core structure further comprises a counterweight portion (23), wherein the counterweight portion (23) is arranged around the circumference of the rotating column (22); The counterweight portion (23) is capable of balancing the weight of the main body (21) and the rotating column (22) so that the center of mass of the valve core structure is located on the rotating axis.

3. The valve core structure according to claim 2, characterized in that: The counterweight part (23) comprises a base (231), and the base (231) is arranged around the circumference of the rotating column (22) and connected to the main body (21).

4. The valve core structure according to claim 3, characterized in that: The base (231) comprises an arc segment (2311) and a transition segment (2312); the arc segment (2311) is arranged in an arc shape, and along the direction of the rotation axis, one end of the arc segment (2311) is connected to the main body (21), and the other end is arranged to be spaced from the outer side wall of the main body (21) at the second opening (203); The transition section (2312) connects the main body (21) and the circular arc section (2311) respectively.

5. The valve core structure according to claim 2 or 3, characterized in that: The counterweight portion (23) comprises a reinforcing rib (232), and the reinforcing rib (232) is connected to the main body portion (21) or the rotating column (22).

6. The valve core structure according to claim 5, characterized in that: The number of the reinforcing ribs (232) is multiple, and the multiple reinforcing ribs (232) are arranged at intervals along the circumference of the rotating column (22).

7. The valve core structure according to claim 2, characterized in that: The main body (21), the rotating column (22) and the counterweight (23) are an integrated structure.

8. The valve core structure according to claim 1, characterized in that: An annular step (211) is provided on the outer side wall of the main body (21) at the second opening (203).

9. A reversing valve, characterized in that: It comprises a valve body (10) and a valve core structure as claimed in any one of claims 1 to 8, wherein the valve body (10) is provided with a first flow port (102), a second flow port (103) and a third flow port (104), the valve core structure is rotatably arranged in the valve body (10), and one end of the main body (21) provided with the first opening (202) is rotatably connected to the first flow port (102), and one end of the main body (21) provided with the second opening (203) can selectively connect to the second flow port (103) or the third flow port (104).

10. The reversing valve according to claim 9, characterized in that: The valve body (10) is further provided with a positioning hole (106), and the positioning hole (106) is arranged between the second flow opening (103) and the third flow opening (104); The positioning hole (106) and the first flow port (102) are coaxially arranged, and the rotating column (22) is inserted into the positioning hole (106) and rotatably cooperates with the positioning hole (106).

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