Valve element assembly for one-way valve, one-way valve for air conditioner and air conditioner

Abstract

The utility model provides a valve core assembly for a one-way valve, a one-way valve for an air conditioner and an air conditioner, the valve core assembly comprises an integrally formed shell, a first cavity and a second cavity which are communicated with each other, a valve port is formed in the communication position of the first cavity and the second cavity, and an overflowing hole communicated with the second cavity is formed in the peripheral wall of the shell; the valve element is arranged in the second cavity. According to the valve element assembly, the integrally-formed shell is adopted, the interior of the shell is divided into the first cavity and the second cavity, the valve element assembly is matched with the valve element, the one-way flowing function of a refrigerant can still be achieved, meanwhile, due to the fact that the shell is of the integrally-formed structure, an original split structure is improved into the integrally-formed structure, and during assembly, the assembly efficiency is improved. According to the one-way valve, only the shell needs to be connected into the valve body of the one-way valve, the shell does not need to be assembled, the assembling steps are simplified, the assembling efficiency is improved, in addition, due to the fact that the shell is of an integrally-formed structure, connecting gaps such as welding seams do not exist, and the overall strength of the shell is higher.

Description

Technical Field

[0001] The utility model relates to the field of air-conditioning manufacturing, and in particular to a valve core component for a one-way valve, a one-way valve for an air-conditioning, and an air-conditioning. Background Art

[0002] The air conditioning check valve is one of the important components of the air conditioner. It can control the flow direction of the refrigerant and ensure the normal operation of the system. It is an indispensable part of the air conditioning system.

[0003] In some existing air-conditioning one-way valves, the valve core assembly is the core component that controls whether the flow can be carried out. The existing valve core assembly usually includes: a valve port part, a limit sleeve and a valve core, wherein the valve port part and the limit sleeve are split structures, and the inside of the valve port part usually needs to be turned to form a valve port, and the limit sleeve is used to limit the valve core so that the valve core can open or close the valve port by moving. Usually, the limit sleeve and the valve port part adopt a split structure, and during the assembly process, they need to be relatively fixed by welding. Not only are there many assembly steps, but also during the assembly process, the high temperature generated by welding is likely to cause the risk of deformation of the valve port. Utility Model Content

[0004] The utility model aims at least to solve the problem in the prior art that the valve core assembly adopts a split structure resulting in more assembly steps, and proposes a valve core assembly for a one-way valve, a one-way valve for an air conditioner and an air conditioner.

[0005] In order to achieve the purpose of the utility model, a valve core assembly for a one-way valve is provided, comprising: an integrally formed shell, having a first cavity and a second cavity connected to each other, a valve port formed at the connecting position between the first cavity and the second cavity, the first cavity being used to accommodate a first pipeline, the second cavity being used to communicate with a second pipeline, and a flow hole connected to the second cavity being provided on the outer peripheral wall of the shell; a valve core, which is arranged in the second cavity, and the valve core is movable between a closed valve position and a valve open position; in the closed valve position, the valve core blocks the valve port to prevent the fluid in the second cavity from flowing to the first cavity; in the open valve position, the valve core is separated from the valve port, and the fluid in the first cavity flows out through the second cavity and the flow hole in sequence.

[0006] Optionally, the ratio of the minimum wall thickness of the shell to the maximum wall thickness of the shell is in the range of 0.75 to 1.

[0007] Optionally, the ratio of the minimum wall thickness of the shell to the maximum wall thickness of the shell is in the range of 0.85 to 1.

[0008] Optionally, the shell is integrally formed by a stretching or stamping process.

[0009] Optionally, the shell includes: a connecting sleeve having a first end and a second end in the axial direction, the first cavity being located in the connecting sleeve, the first cavity forming a connecting port for connecting to the first pipeline at the first end of the connecting sleeve, and the valve port being located in the connecting sleeve; a limiting sleeve connected to the second end of the connecting sleeve, the second cavity being located in the limiting sleeve, the valve core being arranged in the limiting sleeve, and the flow hole being arranged on the limiting sleeve.

[0010] Optionally, the wall thickness of the connecting sleeve is consistent with the thickness of the limiting sleeve.

[0011] Optionally, the connecting sleeve includes: a cylindrical body, which has a first end and a second end in the axial direction, the interior of the cylindrical body forms the first cavity, the first cavity extends to the first end of the cylindrical body to form the connecting port, the first cavity extends to the second end of the cylindrical body to form the valve port, and the inner diameter of the cylindrical body is smaller than the inner diameter of the limiting sleeve; a guide sleeve, which has a large diameter end and a small diameter end in the axial direction, the small diameter end of the guide sleeve is connected to the cylindrical body, and the large diameter end of the guide sleeve is connected to the limiting sleeve, and the inner circumferential wall of the guide sleeve is used to guide the valve core into the closed valve position.

[0012] Optionally, the outer peripheral wall of the connecting sleeve is recessed inwards and forms an annular protrusion on the inner peripheral wall of the connecting sleeve, and the annular protrusion surrounds the valve port.

[0013] Optionally, the annular protrusion has a first side wall and a second side wall in the axial direction, the first side wall is located in the first cavity and is used for abutting and limiting cooperation with the first pipeline, and the second side wall is located at the second end of the connecting sleeve and is connected to the limiting sleeve.

[0014] Optionally, the inner circumferential surface of the second side wall forms a guide surface for guiding the valve core to enter a valve closing position.

[0015] Optionally, the valve core assembly further includes: a valve port member, which is arranged in the connecting sleeve, and the valve port is arranged on the valve port member.

[0016] Optionally, the valve mouth member has a first end and a second end, the valve port extends from the first end to the second end of the valve mouth member, and the end surface of the first end of the valve mouth member faces the connecting port for abutting and limiting cooperation with the first pipeline.

[0017] Optionally, the valve port includes: a guide section and a guide section that are interconnected, the guide section extends to the first end of the valve port member and is connected to the first cavity, for guiding the fluid in the first cavity into the second cavity, and the guide section extends to the second end of the valve port member, for guiding the valve core into a closed valve position.

[0018] Optionally, the valve core assembly further includes: a limiting portion, on which the second end of the limiting sleeve is disposed, and in the valve opening position of the valve core, the valve core and the limiting portion are limitedly matched.

[0019] According to a second aspect of the utility model, a one-way valve for an air conditioner is also disclosed, comprising the valve core assembly mentioned above.

[0020] Optionally, the one-way valve further includes: a valve body, which is an integrally formed structure, the valve body having a first end and a second end in the axial direction, the valve body having a passage extending from the first end to the second end, and the valve core assembly being disposed in the valve body.

[0021] Optionally, the shell includes: a connecting sleeve connected to the first end of the valve body, the connecting sleeve having a first end and a second end in the axial direction, the first cavity being located in the connecting sleeve, the first cavity forming a connecting port for connecting to a first pipeline at the first end of the connecting sleeve, and the valve port being located in the connecting sleeve; a limiting sleeve connected to the second end of the connecting sleeve, the second cavity being located in the limiting sleeve, the valve core being arranged in the limiting sleeve, the flow hole being arranged on the limiting sleeve, and the second cavity being used to communicate with a second pipeline.

[0022] Optionally, the valve body includes: a first connecting part, which has a first end and a second end in the axial direction, a first channel axially passing through the first connecting part is arranged inside the first connecting part, the outer peripheral wall of the connecting sleeve abuts against the inner peripheral wall of the first channel, and the connecting port faces the first end of the first connecting part; a main body part, which has a first end and a second end in the axial direction, the first end of the main body part is connected to the second end of the first connecting part, a second channel axially passing through the main body part is arranged inside the main body part, the limiting sleeve is located in the second channel, and the inner diameter of the first connecting part is smaller than the inner diameter of the main body part.

[0023] Optionally, the second connecting part has a first end and a second end in the axial direction, the first end of the second connecting part is connected to the second end of the main body, a third channel axially passing through the inside of the second connecting part is arranged, and the second end of the second connecting part is used to connect to the second pipeline.

[0024] According to a third aspect of the utility model, an air conditioner is also disclosed, comprising the one-way valve mentioned above.

[0025] The valve core assembly of the utility model adopts an integrally formed shell and divides the interior of the shell into a first cavity and a second cavity. The valve core can still realize the function of one-way flow of refrigerant. At the same time, since the shell adopts an integrally formed structure, the original split structure is improved to an integrally formed structure. During assembly, it is only necessary to connect the shell to the valve body of the one-way valve, and the shell itself does not need to be assembled, which simplifies the assembly steps and improves the assembly efficiency. Moreover, since the shell adopts an integrally formed structure, there are no connecting gaps such as welds, and the overall strength of the shell is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural schematic diagram of the valve core assembly of the first embodiment of the utility model;

[0027] Figure 2 This is a structural schematic diagram of the valve core assembly of the first embodiment of the utility model applied to a one-way valve;

[0028] Figure 3 This is a schematic diagram of the valve body structure of the one-way valve of the first embodiment of the utility model;

[0029] Figure 4 This is a structural schematic diagram of a valve core assembly according to Embodiment 2 of the present utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the valve core assembly of the second embodiment of the utility model applied to a one-way valve;

[0031] Figure 6 This is a schematic structural diagram of a valve core assembly according to Embodiment 3 of the present utility model;

[0032] Figure 7 This is a schematic diagram of the structure of the valve core assembly of the third embodiment of the utility model applied to a one-way valve;

[0033] Figure 8 This is a schematic diagram of the structure of the valve core assembly of the fourth embodiment of the utility model;

[0034] Fig. 9 This is a schematic diagram of the structure of the valve core assembly of the fourth embodiment of the utility model applied to a one-way valve;

[0035] List of reference numerals:

[0036] 10. Shell; 11. Pipe sleeve; 111. First cavity; 112. Connecting port; 113. Cylindrical body; 114. Guide sleeve; 115. Large diameter section; 116. Small diameter section; 12. Limit sleeve; 121. Second cavity; 122. Flow hole; 20. Valve port; 21. Flow guide section; 22. Guide section; 23. DC section; 30. Valve core; 40. Annular protrusion; 41. First side wall; 42. Second side wall; 50. Valve port member; 60. Valve body; 61. First connecting portion; 611. First channel; 612. Outer flange; 613. Accommodating groove; 62. Main body; 621. Second channel; 622. Flow space; 63. Second connecting portion; 631. Third channel; 70. First pipeline; 80. Second pipeline; 90. Limiting portion. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the valve core assembly for a one-way valve, the one-way valve for an air conditioner and the air conditioner provided by the present invention are described in detail below in conjunction with the accompanying drawings.

[0038] The air conditioning check valve is one of the important components of the air conditioner. It can control the flow direction of the refrigerant and ensure the normal operation of the system. It is an indispensable part of the air conditioning system.

[0039] In some existing air-conditioning one-way valves, the valve core assembly is the core component that controls whether the flow can be carried out. The existing valve core assembly usually includes: a valve port part, a limit sleeve and a valve core, wherein the valve port part and the limit sleeve are split structures, and the inside of the valve port part usually needs to be turned to form a valve port, and the limit sleeve is used to limit the valve core so that the valve core can open or close the valve port by moving. Usually, the limit sleeve and the valve port part adopt a split structure, and during the assembly process, they need to be relatively fixed by welding. Not only are there many assembly steps, but also during the assembly process, the high temperature generated by welding is likely to cause the risk of deformation of the valve port.

[0040] In order to solve the above technical problems, the utility model discloses a valve core assembly for a one-way valve. The one-way valve is used to be connected between a first pipeline 70 and a second pipeline 80. When the fluid flows from the first pipeline 70 to the second pipeline 80, the one-way valve is opened to connect the first pipeline 70 with the second pipeline 80, and the refrigerant can flow from the first pipeline 70 to the second pipeline 80; when the refrigerant flows from the second pipeline 80 to the first pipeline 70, the one-way valve is closed to cut off the first pipeline 70 from the second pipeline 80, and the fluid cannot flow from the second pipeline 80 to the first pipeline 70.

[0041] The valve core assembly of the utility model can be applied to the one-way valve of the air conditioner, and can also be applied to the one-way valve of other refrigeration or heating equipment.

[0042] The following is a specific description of the valve core assembly of the present invention by taking a one-way valve used in an air conditioner as an example. It can be understood that when the valve core assembly is used in the one-way valve of an air conditioner, the fluid therein is a refrigerant.

[0043] like Figure 1 The first embodiment of the utility model shown in the figure discloses a valve core assembly, including: a housing 10 and a valve core 30. The housing 10 is integrally formed, and has a first cavity 111 and a second cavity 121 that are connected to each other. The first cavity 111 and the second cavity 121 are connected to form a valve port 20. The first cavity 111 is used to accommodate the first pipeline 70, and the second cavity 121 is used to communicate with the second pipeline 80. The outer peripheral wall of the housing 10 is provided with a flow hole 122 that is connected to the second cavity 121.

[0044] The valve core 30 is arranged in the second cavity 121, and the valve core 30 is movable between a closed valve position and an open valve position; in the closed valve position, the valve core 30 blocks the valve port 20 to prevent the fluid in the second cavity 121 from flowing to the first cavity 111; in the open valve position, the valve core 30 is separated from the valve port 20, and the fluid in the first cavity 111 flows out through the second cavity 121 and the flow hole 122 in sequence.

[0045] During use, when the refrigerant flows from the first cavity 111 to the second cavity 121, the valve core 30 moves from the closed valve position to the open valve position under the push of the refrigerant. At this time, the valve core 30 is separated from the valve port 20, and the first cavity 111 and the second cavity 121 are connected through the valve port 20; when the refrigerant flows from the second cavity 121 to the first cavity 111, the valve core 30 moves from the open valve position to the closed valve position under the action of the refrigerant. At this time, the valve core 30 blocks the valve port 20, so that the fluid in the second cavity 121 cannot flow to the first cavity 111.

[0046] The valve core assembly of the utility model adopts an integrally formed shell 10, and divides the interior of the shell 10 into a first cavity 111 and a second cavity 121. The valve core 30 can still realize the function of one-way flow of the refrigerant. At the same time, since the shell 10 adopts an integrally formed structure, the original split structure is improved into an integrally formed structure. During assembly, it is only necessary to connect the shell 10 to the valve body 60 of the one-way valve, and the shell 10 itself does not need to be assembled, which simplifies the assembly steps and improves the assembly efficiency. Moreover, since the shell 10 adopts an integrally formed structure, there are no connecting gaps such as welds, and the overall strength of the shell 10 is higher.

[0047] It should be noted that, in the present embodiment, the ratio of the minimum wall thickness of the shell 10 to the maximum wall thickness of the shell 10 is in the range of 0.75 to 1 (including the end point values), that is, the minimum wall thickness of the shell 10 and the maximum wall thickness are limited to within 25%, for example, the wall thickness range of the shell 10 is 0.1-2.5 mm, wherein the wall thickness range of the shell 10 refers to the wall thickness range of the shell 10 preset according to actual needs (for example, pipeline pressure, pipeline size, etc.) when producing the shell 10. For example, if the minimum thickness of the shell 10 is 0.1 mm, then the maximum thickness of the shell 10 cannot exceed 0.133 mm; for another example, if the maximum wall thickness of the shell 10 is 2.5 mm, then the minimum wall thickness of the shell 10 is 1.875 mm; for another example, if the minimum thickness of the shell 10 is 1.5 mm, then the maximum thickness of the shell 10 cannot exceed 2 mm. By limiting the minimum value and the maximum value of the wall thickness of the shell 10 to within 25%, the overall wall thickness of the shell 10 is relatively close, the material distribution is more uniform, and the overall strength of the shell 10 is improved. The valve mouth parts in the prior art are usually formed by turning. Due to process limitations, the wall thickness of the valve mouth parts is relatively large. Although the larger wall thickness can improve the strength, in the one-way valve used for air conditioning, the local excessive strength does not contribute much to the overall strength of the valve core assembly, but increases the amount of material, thereby increasing the unit cost. By limiting the maximum and minimum values ​​of the wall thickness of the shell 10 to within 25%, the material distribution that was originally unevenly distributed is relatively more uniform, which is equivalent to allocating a part of the material at the thicker position of the original shell 10 to the smaller position of the original shell 10 wall thickness, so that the smaller position of the original shell 10 wall thickness can become thicker. Under limited materials, the upper limit of the external force that the shell 10 can withstand as a whole is increased, that is, the overall strength of the shell 10 is improved, and the overall reliability of the valve core assembly is improved, which can effectively avoid the deformation of the shell 10 and prevent the valve core 30 from getting stuck with the shell 10.

[0048] It should be noted that, in the present embodiment, the shell 10 is integrally formed by a stretching or stamping process. That is to say, the shell 10 can be integrally formed by stamping a plate or by stretching a tube. By adopting the above process, compared with the turning process in the prior art, the process time is shorter, and the welding step is avoided, simplifying the assembly steps. In addition, the ratio of the minimum value of the wall thickness of the shell 10 to the maximum value of the wall thickness of the shell 10 can be controlled within a range of 0.85-1 (including the end point value) by the stretching or stamping process. For example, after integrally forming by the stretching or stamping process, the wall thickness of the shell 10 ranges from 0.1 to 2.5 mm, that is, the minimum value of the wall thickness of the shell 10 is 0.1 mm, and the maximum value is 2.5 mm. Moreover, the shell 10 must also satisfy the ratio of the minimum value of the wall thickness of the shell 10 to the maximum value is 0.85-1. For example, if the minimum thickness of the shell 10 is 0.1 mm, the maximum thickness of the shell 10 cannot exceed 0.118 mm; for another example, if the maximum wall thickness of the shell 10 is 2.5 mm, the minimum wall thickness of the shell 10 is 2.125 mm; for another example, if the minimum thickness of the shell 10 is 1.7 mm, the maximum thickness of the shell 10 cannot exceed 2 mm. By using a stretching or stamping process to integrally form the shell 10, the wall thickness of the shell 10 is more uniform, thereby further improving the upper limit of the overall strength of the shell 10.

[0049] like Figure 1 As shown, in this embodiment, the housing 10 includes: a pipe sleeve 11 and a limiting sleeve 12. The pipe sleeve 11 has a first end and a second end in the axial direction. The outer peripheral wall of the pipe sleeve 11 is used to connect with the valve body 60 of the one-way valve. The first cavity 111 is located in the pipe sleeve 11. The first cavity 111 forms a connection port 112 for connecting with the first pipeline 70 at the first end of the pipe sleeve 11, so that the first pipeline 70 is inserted into the first cavity 111, and the valve port 20 is located in the pipe sleeve 11. The first end of the limiting sleeve 12 is connected to the second end of the pipe sleeve 11. The limiting sleeve 12 and the pipe sleeve 11 are integrally formed structures, and the second end of the limiting sleeve 12 forms an opening. The limiting assembly also includes: a limiting portion 90, the limiting portion 90 is arranged at the second end of the limiting sleeve 12, the second cavity 121 is located in the limiting sleeve 12, the flow hole 122 is arranged on the limiting sleeve 12, and the valve core 30 is arranged in the limiting sleeve 12. The valve core 30 cooperates with the inner wall of the second cavity 121 in the radial upper limit to prevent the valve core 30 from shaking in the radial direction, thereby reducing noise during use. In the axial direction, the valve core 30 is movable relative to the limit sleeve 12, so that it can move between the open valve position and the closed valve position under the action of the refrigerant.

[0050] When the refrigerant flows into the first cavity 111 from the first pipeline 70, the valve core 30 in the closed valve position moves to the open valve position under the action of the refrigerant, so that the first cavity 111 is connected with the second cavity 121, and the refrigerant enters the second cavity 121 through the valve port 20, and then flows to the outside of the limit sleeve 12 through the flow port, and then enters the second pipeline 80; when the refrigerant flows in the opposite direction, the refrigerant in the second pipeline 80 enters the second cavity 121 from the opening at the second end of the limit sleeve 12, and acts on the valve core 30. The valve core 30 moves from the open valve position to the closed valve position under the action of the refrigerant, thereby blocking the valve port 20, so that the refrigerant cannot flow into the first cavity 111.

[0051] like Figure 1 As shown, in this embodiment, the connecting sleeve 11 includes: a cylindrical body 113 and a guide sleeve 114. The cylindrical body 113 has a first end and a second end in the axial direction, and a first cavity 111 is formed inside the cylindrical body 113. The first cavity 111 extends to the first end of the cylindrical body 113 to form a connecting port 112, and the first cavity 111 extends to the second end of the cylindrical body 113 to form a valve port 20. The inner diameter of the cylindrical body 113 is smaller than the inner diameter of the limiting sleeve 12; the guide sleeve 114 has a large diameter end and a small diameter end in the axial direction, the small diameter end of the guide sleeve 114 is connected to the cylindrical body 113, and the large diameter end of the guide sleeve 114 is connected to the limiting sleeve 12, and the inner circumferential wall of the guide sleeve 114 is used to guide the valve core 30 to enter the valve closing position. Figure 1 It can be seen that the guide sleeve 114 is trumpet-shaped, with its small diameter end connected to the cylindrical body 113 and its large diameter end connected to the limit sleeve 12. This connection method can, on the one hand, serve as a transition connection between the cylindrical body 113 and the limit sleeve 12; on the other hand, the inner wall of the guide sleeve 114 can guide the valve core 30 to the valve port 20 when the valve core 30 moves from the valve opening position to the valve closing position, thereby facilitating cooperation with the valve core 30.

[0052] It can be understood that in this embodiment, the end of the valve core 30 facing the valve port 20 is the blocking end, and the blocking end of the valve core 30 is conical or truncated cone-shaped so as to better block the valve port 20. In addition, a small amount of turning finishing can be performed on the valve port position so that the valve port 20 is matched with the valve core 30 to further improve the blocking effect.

[0053] It should be noted that, in this embodiment, the limiting sleeve 12 is cylindrical, and the inner diameter of the cylindrical body 113 is smaller than the inner diameter of the limiting sleeve 12, so that the valve core 30 can block the valve port 20 formed at the second end of the cylindrical body 113. In addition, the limiting portion 90 is a separately provided limiting pin. During assembly, the valve core 30 needs to be placed into the second cavity 121 from the second end of the limiting sleeve 12. After the valve core 30 is installed, the limiting pin can be radially penetrated through the limiting sleeve 12, thereby limiting the valve core 30 from being separated from the second end of the limiting sleeve 12.

[0054] In this embodiment, the wall thickness of the connecting sleeve 11 is consistent with the thickness of the limiting sleeve 12, that is, the wall thickness of the columnar body, the wall thickness of the guide sleeve 114 and the wall thickness of the limiting sleeve 12 are consistent, so that the overall strength tends to be consistent, thereby improving the overall strength of the shell 10 when limited materials are used. The valve core assembly in this embodiment can be used in a one-way valve or directly installed in a pipeline. In this implementation, the valve core assembly is used in a one-way valve for air conditioning. Figure 2 The one-way valve using the valve core assembly in this embodiment is described in detail.

[0055] like Figure 2 As shown, this embodiment also discloses a one-way valve for an air conditioner, comprising a valve body 60 and the above-mentioned valve core assembly, wherein the valve core assembly is disposed in the valve body 60. The valve body 60 has a first end and a second end in the axial direction, the valve body 60 has a passage extending from the first end to the second end, and the valve core assembly is disposed in the valve body 60.

[0056] Among them, Figure 2 and Figure 3 As shown, the valve body 60 is an integrally formed structure, and the valve body 60 includes: a first connecting portion 61, a main body 62, and a second connecting portion 63. In other words, in the axial direction of the valve body 60, the first connecting portion 61, the main body 62, and the second connecting portion 63 are sequentially connected, and the first connecting portion 61, the main body 62, and the second connecting portion 63 form an integrally formed structure. By adopting the integrally formed structure, the valve body 60 is formed into a whole, thereby improving the overall strength of the valve body 60.

[0057] The first connection portion 61 has a first end and a second end in the axial direction. A first passage 611 is provided in the first connection portion 61 so as to penetrate the first connection portion 61 in the axial direction. The outer peripheral wall of the pipe sleeve 11 abuts against the inner peripheral wall of the first passage 611. The connection port 112 faces the first end of the first connection portion 61. Figure 2 As shown, the first pipeline 70 is inserted into the connecting port 112 to achieve communication between the first cavity 111 and the first pipeline 70 .

[0058] like Figure 3 As shown, in this embodiment, the first connection part 61 is a cylindrical structure, and its first end is formed with an outer flange 612 for the first pipe 70 to be inserted; the second end of the first connection part 61 forms a trumpet structure to be connected and fixed with the main body 62. The first end of the pipe sleeve 11 is located inside the first connection part 61, and there is a distance between the first end of the pipe sleeve 11 and the first end of the first connection part 61 in the axial direction. Figure 2As shown, when the first pipeline 70 is inserted into the first cavity 111 through the connection port 112, the outer wall of the first pipeline 70, the end surface of the first end of the pipe sleeve 11 and the inner wall of the first end of the first connecting part 61 form a receiving groove 613 for receiving solder. During welding, the solder can contact the first pipeline 70, the pipe sleeve 11 and the first connecting part 61 at the same time after melting, so that the first pipeline 70, the pipe sleeve 11 and the first connecting part 61 are welded and fixed at one time, and the sealing between the first pipeline 70 and the pipe sleeve 11, and between the pipe sleeve 11 and the first connecting part 61 is completed, thereby improving the assembly efficiency. In addition, by providing the receiving groove 613, the contact area between the solder and the first pipeline 70 and the first connecting part 61 is also increased, thereby improving the sealing and reliability of the connection.

[0059] The main body 62 has a first end and a second end along the axial direction, the first end of the main body 62 is connected to the second end of the first connecting part 61, and a second channel 621 is axially penetrated inside the main body 62. The limiting sleeve 12 is located in the second channel 621. The inner diameter of the first connecting part 61 is smaller than the inner diameter of the main body 62. A flow space 622 is formed between the outer circumferential wall of the limiting sleeve 12 and the inner circumferential wall of the first channel 611. The second cavity 121 in the limiting sleeve 12 is connected to the flow space 622 through the flow hole 122. Since the inner diameter of the main body 62 is larger than the inner diameter of the first connecting part 61, the flow area of ​​the flow space 622 can be made larger to reduce the resistance to the flow of the refrigerant.

[0060] like Figure 3 As shown, the second connection part 63 is cylindrical, and has a first end and a second end along the axial direction. The first end of the second connection part 63 is connected to the second end of the main body 62, and the second end of the second connection part 63 is used for plugging and matching with the second pipeline 80. A third channel 631 is axially penetrated inside the second connection part 63, and the first channel 611, the second channel 621 and the third channel 631 are connected in sequence to form a channel. Figure 2 As shown, during assembly, the second pipeline 80 is inserted into the third channel 631 from the second end of the second connecting portion 63 , so that the second pipeline 80 is communicated with the flow space 622 in the second channel 621 .

[0061] During use, when the refrigerant flows in from the first pipeline 70, under the action of the refrigerant, the valve core 30 in the closed valve position moves to the open valve position, so that the first cavity 111 is connected with the second cavity 121, and the refrigerant enters the second cavity 121 through the valve port 20, and then flows into the flow space 622 through the flow port, and then flows into the second pipeline 80; when the refrigerant flows in the opposite direction, the refrigerant in the second pipeline 80 flows into the second channel 621, and a part of the refrigerant enters the second cavity 121 from the opening at the second end of the limit sleeve 12, and acts on the valve core 30. Under the action of the refrigerant, the valve core 30 moves from the open valve position to the closed valve position, thereby blocking the valve port 20, so that the refrigerant cannot flow into the first pipeline 70.

[0062] It should be noted that in the first embodiment, the valve port 20 is directly formed at the second end of the cylindrical body 113, but this is not restrictive, and the valve port 20 may also be set in other ways. The setting method of the valve port 20 is described in detail below in conjunction with a specific embodiment.

[0063] like Figure 4 The second embodiment of the utility model shown also discloses a valve core assembly, and its structure is basically the same as that of the first embodiment, except that, in this embodiment, the outer peripheral wall of the pipe sleeve 11 is recessed inwardly and an annular protrusion 40 is formed on the inner peripheral wall of the pipe sleeve 11, and the annular protrusion 40 surrounds the valve port 20. The outer peripheral wall of the pipe sleeve 11 is recessed radially inwardly, so that an annular protrusion 40 is formed on the inner peripheral wall of the pipe sleeve 11, so that the annular protrusion 40 surrounds the valve port 20.

[0064] In the first embodiment, since the second end of the cylindrical body 113 directly forms the valve port 20, and the valve port 20 needs to cooperate with the valve core 30, the inner diameter of the first cavity 111 in the cylindrical body 113 cannot be larger than the maximum size of the valve core 30, and the first pipeline 70 needs to be inserted into the inside of the cylindrical body 113. Therefore, the setting method of the first embodiment is more suitable for the case where the size of the first pipeline 70 is smaller. In the second embodiment, since the annular protrusion 40 is formed on the inner circumferential wall of the pipe sleeve 11 and surrounds the valve port 20, it is sufficient as long as the size of the valve port 20 matches the valve core 30, and the size of the first cavity 111 does not need to be considered to match the valve core 30. Therefore, the inner diameter of the first cavity 111 can be larger. Therefore, this method is more suitable for the case where the diameter of the first pipeline 70 is larger.

[0065] It can be understood that, in this embodiment, the outer peripheral wall of the pipe sleeve 11 can be depressed inwardly and a limiting protrusion can be formed on the inner peripheral wall of the pipe sleeve 11 by extruding inwardly.

[0066] like Figure 4As shown, the annular protrusion 40 has a first side wall 41 and a second side wall 42 in the axial direction. The first side wall 41 is located in the first cavity 111 and is used to abut and limit the first pipeline 70. The second side wall 42 is located at the second end of the pipe sleeve 11 and is connected to the limiting sleeve 12. Figure 5 The second embodiment shown also discloses a one-way valve using the valve core assembly of this embodiment, which can be used in an air conditioner. When the first pipeline 70 is inserted into the first cavity 111 from the connecting port 112, the first side wall 41 abuts against the first pipeline 70 to limit the position, so as to facilitate the assembly of the first pipeline 70. In addition, the inner peripheral surface of the second side wall 42 forms a guide surface for guiding the valve core 30 to enter the closed valve position, so that when the valve core 30 moves from the open valve position to the closed valve position, the valve core 30 is more likely to block the valve port 20, thereby improving the reliability of the valve core assembly.

[0067] like Figure 6 In the third embodiment shown, a valve core assembly is also disclosed, and its structure is basically the same as that of the first embodiment, except that, in this embodiment, the valve core assembly also includes: a valve mouth member 50, the valve mouth member 50 is arranged in the connecting pipe sleeve 11, and the valve mouth member 50 is provided with a valve port 20.

[0068] like Figure 6 As shown, in this embodiment, the connecting sleeve 11 and the limiting sleeve 12 are both cylindrical structures with the same inner diameter, and the valve port member 50 is embedded in the second end of the connecting sleeve 11. The valve port 20 is formed by embedding the valve port member 50 inside the housing 10. Similarly, it is sufficient to ensure that the size of the valve port 20 matches the valve core 30, and the size of the first cavity 111 does not need to be considered to match the valve core 30. Therefore, the inner diameter of the first cavity 111 can be larger; in addition, the valve port member 50 itself can also play a role of radial support, which can prevent radial deformation of the housing 10 during assembly and improve the reliability of the valve core assembly.

[0069] like Figure 6 As shown, the valve port 50 has a first end and a second end, and the valve port 20 extends from the first end to the second end of the valve port 50. The end surface of the first end of the valve port 50 faces the connecting port 112, and is used to abut and limit with the first pipeline 70. Figure 7 As shown, a one-way valve using the valve core assembly of this embodiment is also disclosed, and the one-way valve can be used in an air conditioner. When the first pipeline 70 is inserted into the connecting port 112 of the self-pipe sleeve 11 and inserted into the first cavity 111, the end surface of the first end of the valve port member 50 abuts against the first pipeline 70 to limit the fit, so as to facilitate the assembly of the first pipeline 70.

[0070] like Figure 6As shown, the valve port 20 includes: a guide section 21, a direct current section 23 and a guide section 22 which are connected in sequence in a circumferential direction. The guide section 21 extends to the first end of the valve port member 50 and is connected to the first cavity 111, and is used to guide the fluid in the first cavity 111 into the second cavity 121, thereby reducing the resistance caused by the diameter change. The guide section 22 extends to the second end of the valve port member 50, and is used to guide the valve core 30 to enter the valve closing position, so that the valve core 30 can be more easily matched with the valve port 20, thereby improving the reliability of the valve core assembly.

[0071] In addition, in this embodiment, the limiting portion 90 is an inner folded edge formed inwardly at the second end of the limiting sleeve 12. When the valve core 30 is in the open valve position, the valve core 30 abuts against the inner folded edge to form a limiting fit to prevent the valve core 30 from being separated from the limiting sleeve 12 under the action of the refrigerant.

[0072] like Figure 8 and Fig. 9 In the fourth embodiment shown, a valve core assembly is also disclosed, and its structure is basically the same as that of the third embodiment, except that, in this embodiment, the pipe sleeve 11 includes a large diameter section 115 and a small diameter section 116, the large diameter section 115 extends to the first end, and the small diameter section 116 extends to the second end, and the valve port member 50 is embedded in the small diameter section 116, so as to be fixedly connected to the pipe sleeve 11, and a first cavity 111 is formed in the large diameter section 115. In this way, the inner diameter of the first cavity 111 can be further enlarged, so that the first pipeline 70 with a larger diameter can be adapted.

[0073] According to another aspect of the utility model, an air conditioner is also disclosed, comprising the one-way valve mentioned above.

[0074] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A valve core assembly for a one-way valve, characterized in that: include: An integrally formed housing (10) comprises a first cavity (111) and a second cavity (121) which are in communication with each other, a valve port (20) being formed at a position where the first cavity (111) and the second cavity (121) are in communication, the first cavity (111) being used to accommodate a first pipeline (70), the second cavity (121) being used to communicate with a second pipeline (80), and a flow hole (122) in communication with the second cavity (121) being provided on an outer peripheral wall of the housing (10); A valve core (30) is arranged in the second cavity (121), and the valve core (30) is movable between a valve closing position and a valve opening position; in the valve closing position, the valve core (30) blocks the valve port (20) to prevent the fluid in the second cavity (121) from flowing into the first cavity (111); in the valve opening position, the valve core (30) is separated from the valve port (20), and the fluid in the first cavity (111) flows out through the second cavity (121) and the flow hole (122) in sequence.

2. The valve core assembly according to claim 1, characterized in that: The ratio of the minimum wall thickness of the shell (10) to the maximum wall thickness of the shell (10) is in the range of 0.75 to 1.

3. The valve core assembly according to claim 2, characterized in that: The ratio of the minimum wall thickness of the shell (10) to the maximum wall thickness of the shell (10) is in the range of 0.85 to 1.

4. The valve core assembly according to claim 1, characterized in that: The housing (10) is integrally formed by a stretching or stamping process.

5. The valve core assembly according to claim 1, characterized in that: The housing (10) comprises: A pipe sleeve (11) having a first end and a second end in the axial direction, the first cavity (111) being located in the pipe sleeve (11), the first cavity (111) forming a connection port (112) at the first end of the pipe sleeve (11) for connecting to the first pipeline (70), and the valve port (20) being located in the pipe sleeve (11); The limiting sleeve (12) is connected to the second end of the connecting sleeve (11), the second cavity (121) is located in the limiting sleeve (12), the valve core (30) is arranged in the limiting sleeve (12), and the flow hole (122) is arranged on the limiting sleeve (12).

6. The valve core assembly according to claim 5, characterized in that: The wall thickness of the connecting sleeve (11) is consistent with the thickness of the limiting sleeve (12).

7. The valve core assembly according to claim 5, characterized in that: The pipe sleeve (11) comprises: A cylindrical body (113) having a first end and a second end in the axial direction, the first cavity (111) is formed inside the cylindrical body (113), the first cavity (111) extends to the first end of the cylindrical body (113) to form the connecting port (112), the first cavity (111) extends to the second end of the cylindrical body (113) to form the valve port (20), and the inner diameter of the cylindrical body (113) is smaller than the inner diameter of the limiting sleeve (12); The guide sleeve (114) has a large diameter end and a small diameter end in the axial direction, the small diameter end of the guide sleeve (114) is connected to the cylindrical body (113), the large diameter end of the guide sleeve (114) is connected to the limit sleeve (12), and the inner circumferential wall of the guide sleeve (114) is used to guide the valve core (30) into the valve closing position.

8. The valve core assembly according to claim 5, characterized in that: The outer peripheral wall of the connecting sleeve (11) is recessed inwards and an annular protrusion (40) is formed on the inner peripheral wall of the connecting sleeve (11), and the annular protrusion (40) surrounds the valve port (20).

9. The valve core assembly according to claim 8, characterized in that: The annular protrusion (40) has a first side wall (41) and a second side wall (42) in the axial direction; the first side wall (41) is located in the first cavity (111) and is used for abutting and limiting cooperation with the first pipeline (70); the second side wall (42) is located at the second end of the connecting sleeve (11) and is connected to the limiting sleeve (12).

10. The valve core assembly according to claim 9, characterized in that: The inner peripheral surface of the second side wall (42) forms a guide surface for guiding the valve core (30) to enter a valve closing position.

11. The valve core assembly according to claim 5, characterized in that: The valve core assembly also includes: The valve port member (50) is arranged in the pipe sleeve (11), and the valve port (20) is arranged on the valve port member (50).

12. The valve core assembly according to claim 11, characterized in that: The valve mouth member (50) has a first end and a second end, and the valve port (20) extends from the first end to the second end of the valve mouth member (50). The end surface of the first end of the valve mouth member (50) faces the connecting port (112) and is used for abutting and limiting cooperation with the first pipeline (70).

13. The valve core assembly according to claim 12, characterized in that: The valve port (20) comprises: a flow guide section (21) and a guide section (22) which are interconnected; the flow guide section (21) extends to the first end of the valve port member (50) and is connected to the first cavity (111) for guiding the fluid in the first cavity (111) into the second cavity (121); the guide section (22) extends to the second end of the valve port member (50) for guiding the valve core (30) into a closed valve position.

14. The valve core assembly according to claim 5, characterized in that: The valve core assembly also includes: The limiting portion (90) is provided at the second end of the limiting sleeve (12), and when the valve core (30) is in the valve opening position, the valve core (30) and the limiting portion (90) are in limiting cooperation.

15. A one-way valve for air conditioning, characterized in that: Comprising a valve core assembly according to any one of claims 1 to 14.

16. The one-way valve according to claim 15, characterized in that: The one-way valve also includes: The valve body (60) is an integrally formed structure. The valve body (60) has a first end and a second end in the axial direction. The valve body (60) has a passage extending from the first end to the second end. The valve core assembly is arranged in the valve body (60).

17. The one-way valve according to claim 16, characterized in that: The housing (10) comprises: a pipe sleeve (11) connected to the first end of the valve body (60); the pipe sleeve (11) having a first end and a second end in the axial direction; the first cavity (111) being located in the pipe sleeve (11); the first cavity (111) forming a connection port (112) at the first end of the pipe sleeve (11) for connection with a first pipeline (70); and the valve port (20) being located in the pipe sleeve (11); A limiting sleeve (12) is connected to the second end of the connecting sleeve (11); the second cavity (121) is located in the limiting sleeve (12); the valve core (30) is arranged in the limiting sleeve (12); the flow hole (122) is arranged on the limiting sleeve (12); and the second cavity (121) is used to communicate with the second pipeline (80).

18. The one-way valve according to claim 17, characterized in that: The valve body (60) comprises: A first connecting portion (61) having a first end and a second end in the axial direction, a first channel (611) penetrating axially is arranged inside the first connecting portion (61), an outer peripheral wall of the connecting sleeve (11) abuts against an inner peripheral wall of the first channel (611), and the connecting port (112) faces the first end of the first connecting portion (61); A main body (62) has a first end and a second end in the axial direction, the first end of the main body (62) is connected to the second end of the first connecting portion (61), a second passage (621) penetrating axially is provided inside the main body (62), the limiting sleeve (12) is located in the second passage (621), and the inner diameter of the first connecting portion (61) is smaller than the inner diameter of the main body (62).

19. The one-way valve according to claim 18, characterized in that: The second connecting portion (63) has a first end and a second end in the axial direction, the first end of the second connecting portion (63) is connected to the second end of the main body (62), a third channel (631) is axially penetrated inside the second connecting portion (63), and the second end of the second connecting portion (63) is used to be connected to the second pipeline (80).

20. An air conditioner, characterized in that: A one-way valve comprising the one-way valve according to any one of claims 15 to 19.

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