Valve core structure and reversing valve

Abstract

A valve core structure (20) and a reversing valve (100). The valve core structure (20) comprises a main body portion (21) and a rotating column (22). The main body portion (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). 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 portion (21), the rotating column (22) and the first opening (202) are coaxially arranged, and the axis of the rotating column (22) is defined as an axis of rotation. The main body portion (21) can rotate around the axis of rotation, and the center of mass of the valve core structure (20) is on the axis of rotation.

Description

Valve core structure and reversing valve

[0001] Related applications

[0002] The present application claims priority to the Chinese patent application No. 202422006461.1, filed on August 15, 2024, and entitled “Valve core structure and reversing valve”, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of reversing valve, and in particular, to a valve core structure and a reversing valve. BACKGROUND

[0004] The reversing valve is an important component in an air conditioning system, which includes a valve body and a valve core. The valve core is arranged in the valve body and can rotate around an axis relative to the valve body to connect different flow ports on the valve body, so as to switch the flow direction of the refrigerant and realize the conversion between cooling and heating modes.

[0005] In order to ensure that the valve core can rotate smoothly for reversing, the torque for driving the valve core to rotate usually needs to be designed to be large, which leads to an increase in cost. SUMMARY

[0006] Therefore, 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.

[0007] The present application provides a valve core structure, which includes a main body part and a rotating column. The main body part is provided with a flow cavity, a first opening and a second opening which are in communication with 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 with the main body part. The rotating column and the first opening are coaxially arranged, and the axis of the rotating column is defined as a rotating axis. The main body part can rotate around the rotating axis, and the center of mass of the valve core structure is on the rotating axis.

[0008] In one of the embodiments, the valve core structure further includes a counterweight part which is arranged around the circumferential side of the rotating column. The counterweight part can balance the weight of the main body part and the rotating column, so that the center of mass of the valve core structure is located on the rotating axis.

[0009] In one of the embodiments, the counterweight part includes a base body which is arranged around the circumferential side of the rotating column and connected with the main body part.

[0010] In one of the embodiments, the base body comprises a circular arc segment and a transition segment, the circular arc segment is arranged in an arc shape and in the direction of the rotation axis, one end of the circular arc segment is connected to the main body part, and the other end of the circular arc segment close to the second opening is arranged apart from the outer side wall of the main body part at the second opening; and the transition segment is connected to the main body part and the circular arc segment respectively.

[0011] In one of the embodiments, the counterweight part comprises a reinforcing rib connected to the main body part or the rotating column.

[0012] In one of the embodiments, the number of the reinforcing ribs is multiple, and the multiple reinforcing ribs are arranged apart along the circumference of the rotating column.

[0013] In one of the embodiments, the main body part, the rotating column and the counterweight part are of an integrated structure.

[0014] In one of the embodiments, the outer side wall of the main body part at the second opening is provided with an annular step.

[0015] The application further provides a reversing valve comprising a valve body and the valve core structure of any one of the above embodiments, the valve body is provided with a first flow passage, a second flow passage and a third flow passage, the valve core structure is rotatably arranged in the valve body, and one end of the main body part provided with the first opening is rotatably connected to the first flow passage, and one end of the main body part provided with the second opening can selectively communicate with the second flow passage or the third flow passage.

[0016] In one of the embodiments, the valve body is further provided with a positioning hole arranged between the second flow passage and the third flow passage; wherein the positioning hole and the first flow passage are coaxially arranged, and the rotating column is inserted into the positioning hole and rotatably matched with the positioning hole.

[0017] Compared with the related art, the valve core structure and the reversing valve provided by the application can eliminate the rotation caused by the center of mass when the valve core structure rotates by arranging the center of mass of the valve core structure on the rotation axis, thus the torque for driving the valve core structure to rotate can be avoided to be increased, so that the driving cost is greatly reduced. Meanwhile, the cooperation between the valve core structure and other components is more reliable, the probability of refrigerant leakage is reduced, and the safety is improved.

[0018] The details of one or more embodiments of the application are presented in the accompanying drawings and description below. Other features, objects, and advantages of the application will be apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and all of the other drawings can be obtained by those of ordinary skill in the art without any creative effort based on these drawings.

[0020] Fig. 1 is a structural schematic diagram of a valve core structure according to an embodiment of the present application.

[0021] Fig. 2 is a side view of the valve core structure according to an embodiment of the present application.

[0022] Fig. 3 is a sectional view of the valve core structure according to an embodiment of the present application.

[0023] Fig. 4 is an exploded view of a reversing valve according to an embodiment of the present application.

[0024] The meanings of the symbols in the drawings are as follows: 100, reversing valve; 10, valve body; 101, valve cavity; 102, first flow-through port; 103, second flow-through port; 104, third flow-through port; 105, fourth flow-through port; 106, positioning hole; 20, valve core structure; 201, flow-through cavity; 202, first opening; 203, second opening; 204, accommodating cavity; 21, main body part; 211, annular step; 22, rotating column; 23, counterweight part; 231, base body; 2311, circular arc segment; 2312, transition segment; 232, reinforcing rib; 30, sealing member. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without any creative effort fall within the scope of the present application.

[0026] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there can be a middle component. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in the description of the present application are for the purpose of illustration only and are not intended to be the only implementation.

[0027] In addition, the terms "first", "second", etc. are used only for descriptive purposes and do not connote or imply relative importance. Thus, a feature defined with "first", "second", etc. can include at least one of the features. In the description of the present application, the meaning of "a plurality" is at least two, for example, two, three, etc., unless explicitly specified and limited otherwise.

[0028] In the present application, unless explicitly specified and limited, the "on", "under", "above" and "over" of a first feature to a second feature can be 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 "on", "above" and "over" of a first feature to a second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The "under", "below" and "under" of a first feature to a second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0029] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.

[0030] The reversing valve is an important part in the air conditioning system, which 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 shaft relative to the valve body to connect different flow ports on the valve body, so as to switch the flow direction of the refrigerant and realize the conversion of the refrigeration and heating modes. In order to ensure that the valve core can rotate smoothly for reversing, the torque for driving the valve core to rotate is usually designed to be large, which leads to an increase in cost.

[0031] In the related art, in order to realize reversing, the valve core is usually designed as an irregular structure. Since the rotating shaft of the valve core is usually placed horizontally after the reversing valve is installed, the valve core will tend to rotate in one direction due to the action of gravity when rotating around the horizontal rotating shaft, which affects the normal rotation of the valve core. In order to overcome the rotation caused by gravity, the torque for driving the valve core to rotate needs to be increased, which leads to a great increase in cost.

[0032] Please refer to FIG. 1-4, to solve the problem of high driving cost of the existing valve core structure, the 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 passage 102, a second flow passage 103 and a third flow passage 104, the first flow passage 102 is arranged at one end of the valve body 10, and the second flow passage 103 and the third flow passage 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 passage 102, and the other end can selectively communicate with the second flow passage 103 or the third flow passage 104, so as to realize the switching of the refrigerant flow direction.

[0033] Please refer to FIG. 1-3, the valve core structure 20 provided by the application includes a main body 21 and a rotating column 22, the main body 21 is provided with a flow cavity 201, and a first opening 202 and a second opening 203 communicating with the flow cavity 201, the second opening 203 is eccentrically arranged relative to the first opening 202. The rotating column 22 is arranged outside the flow cavity 201 and connected with 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 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.

[0034] It can be understood that by arranging the center of mass of the valve core structure 20 on the rotation axis, the rotation caused by the center of mass can be eliminated when the valve core structure 20 rotates, so that the torque for driving the valve core structure 20 to rotate can be avoided to increase, thereby greatly reducing the driving cost. At the same time, the cooperation between the valve core structure 20 and other components is more reliable, the probability of refrigerant leakage is reduced, and the safety is improved.

[0035] In an embodiment, as shown in FIG. 1 and FIG. 2, the valve core structure 20 further includes a counterweight part 23, which surrounds the circumferential side of the rotating column 22 and is connected with the main body 21. Wherein, the counterweight part 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.

[0036] Since the first opening 202 and the second opening 203 of the main body 21 are eccentrically arranged, the part 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 will also deviate to one side of the rotation axis. At this time, by adding the counterweight part 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, so that the rotation caused by the center of mass is effectively eliminated, and the motion accuracy of the valve core structure 20 is improved.

[0037] Further, in an embodiment, the counterweight part 23 includes a base body 231, which surrounds the circumferential side of the rotating column 22 and is connected with the main body 21, so as to realize the overall weight balance.

[0038] In another embodiment, the counterweight portion 23 comprises a reinforcing rib 232 connected to the main body portion 21 or the rotating column 22, so as to achieve the overall weight balance through the reinforcing rib 232.

[0039] In yet another embodiment, as shown in FIG. 1 and FIG. 3, the counterweight portion 23 can also comprise both the base body 231 and the reinforcing rib 232. The base body 231 is connected to the main body portion 21 and encloses the accommodating cavity 204 together with the main body portion 21. The reinforcing rib 232 is arranged in the accommodating cavity 204, wherein the reinforcing rib 232 is connected to the rotating column 22 and the main body portion 21, or the reinforcing rib 232 is connected to the rotating column 22 and the base body 231. Through the cooperation of the reinforcing rib 232 and the base body 231, the center of mass of the valve core structure 20 can be ensured to be located on the rotating shaft, and at the same time, the structural strength of the valve core structure 20 as a whole can be improved.

[0040] The present application specifically describes the structure in which the counterweight portion 23 comprises both the base body 231 and the reinforcing rib 232.

[0041] Specifically, in an embodiment, the number of reinforcing ribs 232 is multiple, and the multiple reinforcing ribs 232 are arranged in a circumferential direction of the rotating column 22. By reasonably setting the number and arrangement of the reinforcing ribs 232, compared with increasing the counterweight only on the side (for example, on the base body 231) of the rotating shaft that needs to be balanced, the structural strength of the rotating column 22 can be further improved.

[0042] Exemplarily, the present application sets 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 the counterweight balance of the valve core structure 20 as a whole can be achieved in cooperation with the base body 231.

[0043] In an embodiment, as shown in FIG. 1 and FIG. 2, the base body 231 comprises a circular arc segment 2311 and a transition segment 2312. The circular arc segment 2311 is arranged in an arc shape, and along the direction of the rotating shaft, one end of the circular arc segment 2311 is connected to the main body portion 21, and the other end of the circular arc segment 2311 close to the second opening 203 is arranged in a spaced manner with the outer side wall of the main body portion 21 at the second opening 203. The transition segment 2312 is connected to the main body portion 21 and the circular arc segment 2311, respectively, so that the transition segment 2312, the circular arc segment 2311, and the main body portion 21 can enclose the accommodating cavity 204.

[0044] By arranging one side of the base body 231 as the circular arc segment 2311, the processing of the base body 231 is facilitated, and the movement resistance of the outer surface of the base body 231 and the refrigerant, etc. when the valve core structure 20 rotates can be reduced. The transition segment 2312 can increase the contact area between the circular arc segment 2311 and the main body portion 21, thereby improving the reliability of the connection between the base body 231 and the main body portion 21.

[0045] To further improve the overall structural strength of the valve core structure 20, in an embodiment, the main body part 21, the rotating column 22 and the counterweight part 23 can be arranged as an integrated structure.

[0046] The application also provides a reversing valve 100, which is mainly applied to an air conditioning system. The reversing valve 100 comprises a valve body 10 and the valve core structure 20 of any one of the above embodiments. One end of the main body part 21 provided with the first opening 202 is rotationally connected to the first flow-through port 102. One end of the main body part 21 provided with the second opening 203 can selectively communicate with the second flow-through port 103 or the third flow-through port 104, so as to realize the switching of the refrigerant flow passage by the valve core structure 20 and realize the conversion of the refrigeration and heating functions.

[0047] Further, in an embodiment, the valve body 10 is also provided with a positioning hole 106, which is arranged between the second flow-through port 103 and the third flow-through port 104. The positioning hole 106 and the first flow-through port 102 are coaxially arranged, and the rotating column 22 is inserted into the positioning hole 106 and rotationally matched with the positioning hole 106. The positioning hole 106 plays a role of installing 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 during rotation.

[0048] In an embodiment, as shown in FIG. 4, the valve body 10 is also provided with a fourth flow-through port 105, which is arranged on the side wall of the valve body 10. The fourth flow-through port 105 communicates with the second flow-through port 103 or the third flow-through port 104, so as to realize the communication of the entire circuit.

[0049] Specifically, in the embodiment, the valve body 10 is also provided with a valve cavity 101. The fourth flow-through port 105 is the inlet of the valve cavity 101, which communicates with the outlet of the compressor. The first flow-through port 102 is the outlet of the flow-through cavity 201 in the valve core structure 20, which communicates with the inlet of the compressor. In addition, the second flow-through port 103 and the third flow-through port 104 are connected with corresponding heat exchangers.

[0050] The application is specifically described by taking the second flow-through port 103 connected with the indoor heat exchanger and the third flow-through port 104 connected with the outdoor heat exchanger as examples.

[0051] When the air conditioning system is in a refrigeration state, the high-pressure refrigerant flowing out of the outlet of the compressor enters the valve cavity 101 from the fourth flow-through port 105 of the reversing valve 100. At this time, the flow-through cavity 201 of the valve core structure 20 communicates the first flow-through port 102 and the second flow-through port 103, so that the high-pressure refrigerant in the valve cavity 101 flows out from the third flow-through port 104, and is sequentially heat-exchanged into low-pressure refrigerant by the outdoor heat exchanger and the indoor heat exchanger, and then flows into the inlet of the compressor from the second flow-through port 103, the flow-through cavity 201 and the first flow-through port 102, so as to realize a primary refrigeration cycle.

[0052] 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-through port 105 of the reversing valve 100, at this time, the flow-through cavity 201 of the valve core structure 20 is in communication with the first flow-through port 102 and the third flow-through port 104, so that the high-pressure refrigerant in the valve cavity 101 flows out from the second flow-through port 103, and after being heat-exchanged by the indoor heat exchanger and the outdoor heat exchanger in turn to become low-pressure refrigerant, the low-pressure refrigerant flows into the inlet of the compressor from the third flow-through port 104, the flow-through cavity 201 and the first flow-through port 102, so as to realize a primary heating cycle.

[0053] Wherein, in order to ensure the sealing performance of the valve core structure 20 when it is in communication with the second flow-through port 103 or the third flow-through port 104, prevent internal high-pressure refrigerant and low-pressure refrigerant from mixing to cause internal leakage, a sealing element 30 can be arranged at the second opening 203 of the main body 21, here, the sealing element 30 can be arranged as one or more, and the specific arrangement can be reasonably arranged according to actual needs.

[0054] Further, in order to facilitate the installation of the sealing element 30, an annular step 211 can be formed on the outer wall of the main body 21 at the second opening 203, and the sealing element 30 is sleeved on the annular step 211, so as to improve the installation reliability of the sealing element 30.

[0055] The technical features of the above-described embodiments can be combined in any manner. In order to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0056] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A valve trim structure, characterized by, The valve core structure comprises a main body part and a rotating column, the main body part is provided with a flow-through cavity, a first opening and a second opening which are communicated with the flow-through cavity, and the second opening is eccentrically arranged relative to the first opening; The rotating column is arranged outside the flow-through cavity and connected with the main body part, the rotating column and the first opening are coaxially arranged, and the axis of the rotating column is defined as a rotating shaft, wherein the main body part can rotate around the rotating shaft, and the center of mass of the valve core structure is on the rotating shaft.

2. The valve trim structure of claim 1, wherein, The valve core structure further comprises a counterweight part which is arranged around the circumferential side of the rotating column; The counterweight part can balance the weight of the main body part and the rotating column, so that the center of mass of the valve core structure is on the rotating shaft.

3. The valve trim structure of claim 2 wherein, The counterweight part comprises a base body which is arranged around the circumferential side of the rotating column and connected with the main body part.

4. The valve trim structure of claim 3 wherein, The base body comprises an arc segment and a transition segment, the arc segment is arranged in an arc shape, and along the direction of the rotating shaft, one end of the arc segment is connected with the main body part, and the other end of the arc segment close to the second opening is spaced apart from the outer side wall of the main body part at the second opening; The transition segment is connected with the main body part and the arc segment respectively.

5. The valve trim structure of claim 2 or 3, wherein, The counterweight part comprises a reinforcing rib which is connected with the main body part or the rotating column.

6. The valve trim structure of claim 5 wherein, The number of reinforcing ribs is multiple, and multiple reinforcing ribs are arranged in a circumferential direction of the rotating column.

7. The valve trim structure of claim 2 wherein, The main body part, the rotating column and the counterweight part are of an integrated structure.

8. The valve trim structure of claim 1, wherein, The outer side wall of the main body part at the second opening is provided with an annular step.

9. A reversing valve characterized by The valve core structure comprises a valve body and a valve core structure as claimed in any one of claims 1-8, the valve body is provided with a first flow-through opening, a second flow-through opening and a third flow-through opening, the valve core structure is rotatably arranged in the valve body, and one end of the main body part provided with the first opening is rotatably connected with the first flow-through opening, and one end of the main body part provided with the second opening can selectively communicate with the second flow-through opening or the third flow-through opening.

10. The reversing valve of claim 9, wherein, The valve body is further provided with a positioning hole which is arranged between the second flow-through opening and the third flow-through opening; The positioning hole and the first flow-through opening are coaxially arranged, and the rotating column is inserted into the positioning hole and rotatably connected with the positioning hole.

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