A self-sealing connection structure applied to a refrigeration system

Abstract

The application relates to the technical field of refrigeration systems, in particular to a self-sealing connecting structure applied to a refrigeration system, which comprises a hollow male connecting body and a hollow female connecting body, and the two bodies are detachably connected. The male connecting body is provided with a first through part and a second through part, and is internally provided with a first connecting piece which is slidably installed and connected with the two through parts, and is provided with a first surrounding piece on the first connecting piece; the female connecting body is provided with a third through part and a fourth through part, and is internally provided with a second connecting piece which is fixedly installed between the two through parts, and is provided with a second surrounding piece which is slidably sleeved on the second connecting piece and connected with the two through parts, and is further provided with a supporting piece, an elastic part, a sealing piece, a guide part and the like. The application can realize the connection and sealing of fluid in the refrigeration system, the connecting structure is detachable, installation and maintenance are facilitated, and the setting of the sealing pieces, the elastic part and the like can effectively guarantee the sealing property and stability of the connection.

Description

Technical Field

[0001] This application relates to the field of refrigeration system technology, and in particular to a self-sealing connection structure applied to refrigeration systems. Background Technology

[0002] In the refrigeration field, reliable refrigerant transfer is crucial for ensuring efficient system operation in the connection between indoor and outdoor units of split-type RV and truck refrigeration systems, residential refrigeration, marine refrigeration, and heat pump products. Currently, these refrigeration systems typically use traditional connector structures for indoor and outdoor unit connections, requiring pre-vacuuming during installation. This necessitates specialized vacuuming equipment and is time-consuming. Furthermore, disassembling the indoor and outdoor units requires purging the refrigerant, resulting in refrigerant loss and leaving air impurities in the system.

[0003] Existing technologies attempt to address these issues by employing sealing joints, but most have simple sealing structures, relying solely on a single rubber sealing ring. This rubber ring is prone to losing elasticity due to aging, leading to seal failure and refrigerant leakage. Furthermore, the sealing surface does not adhere properly under varying system pressures, making it difficult to guarantee sealing performance at high pressures. The flow path design is also inadequate, either exhibiting refrigerant flow throttling, affecting refrigeration efficiency, or compromising the coaxiality and perpendicularity of components such as the valve core, impacting both sealing reliability and refrigerant flow.

[0004] Existing technologies have several problems, including poor sealing reliability, which cannot effectively prevent refrigerant leakage and air impurities from entering, leading to decreased refrigeration system efficiency and even equipment damage. In addition, installation and disassembly are complex, requiring specialized equipment and a long time, and significant refrigerant loss occurs during disassembly and assembly, increasing operating costs and maintenance difficulty. Utility Model Content

[0005] To address the problems of existing refrigeration system joint sealing structures being simple, rubber sealing rings being prone to aging and failure, and poor sealing surface fit leading to refrigerant leakage, as well as the ease with which air impurities can enter the system and affect refrigeration performance during disassembly and assembly, this application provides a self-sealing connection structure for use in refrigeration systems.

[0006] This application provides a self-sealing connection structure for use in a refrigeration system, employing the following technical solution: A self-sealing connection structure for use in a refrigeration system includes a hollow male connector and a hollow female connector, the male connector and the female connector being detachably connected; the male connector has a first through portion and a second through portion; a first connecting member is provided inside the male connector, the first connecting member being slidably installed inside the male connector and connecting the first through portion and the second through portion; a first surrounding member is provided on the body of the first connecting member, the first surrounding member being fixed to one end of the body of the first connecting member; the female connector has a third through portion and a fourth through portion; a second connecting member is provided inside the female connector, the second connecting member being fixedly installed inside the female connector and located between the third through portion and the fourth through portion; a second surrounding member is provided on the body of the second connecting member, the second surrounding member being sleeved on the second connecting member and slidably connected to the second connecting member; the second surrounding member connecting the third through portion and the fourth through portion.

[0007] By adopting the above technical solution, the refrigeration system connectors can be directly connected and disassembled under system pressure. The male connector and the female connector are detachably connected, which facilitates installation and disassembly. The first connecting piece is slidably installed and connects the first and second passages, and the second surrounding piece is fitted on the second connecting piece and connects the third and fourth passages, which can realize the internal connection of the male connector and the female connector during connection. The setting of the first and second surrounding pieces helps to improve the sealing performance and solves the problems of existing refrigeration systems requiring pre-vacuuming during connection, refrigerant evacuation during disassembly, inconvenient operation, refrigerant loss, and residual impurities, thus ensuring the efficient and stable operation of the refrigeration system.

[0008] Preferably, the male connector body is provided with a first support member, which is fixedly installed in the male connector body; one end of the first connecting member passes through the first support member and is slidably connected to the first support member, and the first surrounding member on the other end abuts against the second through part of the male connector body; the first connecting member has a first elastic part, which is sleeved on the first connecting member, with one end abutting against the first support member and the other end abutting against the body of the first connecting member; the first elastic part is elastic.

[0009] By adopting the above technical solution, the male connector is provided with a first support member, through which one end of the first connecting member passes and slidably connects. Combined with the first elastic part, when the male connector is not connected to the female connector, the first surrounding member abuts against the second passage of the male connector to achieve self-sealing. Simultaneously, the elasticity of the first elastic part ensures that the first connecting member can move stably under varying forces, ensuring the reliability of the seal. Preferably, the first support member has an arc-shaped flow portion.

[0010] By adopting the above technical solution, the male connector and the female connector are detachably connected. The first connecting member of the male connector is slidably installed and connects the first passage and the second passage. The first connecting member is provided with a first surrounding member. The second connecting member of the female connector is fixedly installed and located between the third passage and the fourth passage. The second connecting member is provided with a second surrounding member that is slidably connected to itself and connects the third passage and the fourth passage. This realizes that the refrigeration system connector can be directly connected and disassembled under system pressure. The installation and disassembly are time-saving and labor-saving and can be disassembled and assembled multiple times. The first support member inside the male connector is fixedly installed. The first connecting member passes through the first support member and is slidably connected. The first surrounding member abuts against the second passage. The first elastic part of the first connecting member is sleeved on it and abuts against the first support member and the body, realizing the self-sealing of the male connector. The arc-shaped flow part of the first support member can ensure that the refrigerant maintains good fluidity or passage performance.

[0011] Preferably, a first sealing element is provided at one end of the male connector, and the first sealing element is embedded in the male connector.

[0012] By adopting the above technical solution, a first sealing element is embedded at one end of the male connector, which can achieve a hard seal, improve the overall sealing performance, help prevent refrigerant leakage, and ensure the efficient and stable operation of the refrigeration system.

[0013] Preferably, the first connecting member is provided with a guide portion, which is fitted onto the first connecting member and contacts the inner surface of the male connecting member; the guide portion also abuts against the first elastic portion.

[0014] By adopting the above technical solution, the guide part is fitted onto the first connecting member and contacts the inner surface of the male connecting member and abuts against the first elastic part, which can guide the first connecting member to slide stably along the inner cylinder of the male connecting member, ensuring the stability of the sliding of the first connecting member, thereby ensuring the normal operation and sealing performance of the self-sealing connection structure.

[0015] Preferably, the second connecting member is provided with a second sealing member, which is embedded in the second surrounding member.

[0016] By adopting the above technical solution, the male connector and the female connector are detachably connected. The first connecting member of the male connector connects the first and second passages, and the second connecting member of the female connector is located between the third and fourth passages. The second surrounding member connects the third and fourth passages, thereby realizing the connection of the refrigeration system and the flow of refrigerant. A second sealing member is provided on the second connecting member and embedded in the second surrounding member, which can further improve the sealing performance between the second connecting member and the second surrounding member, prevent refrigerant leakage, and ensure the efficient and stable operation of the refrigeration system.

[0017] Preferably, the second connecting member is provided with a third sealing member, which is fitted onto the second surrounding member and contacts the inner surface of the female connecting body.

[0018] By adopting the above technical solution, the third sealing element is fitted onto the second surrounding element and contacts the inner surface of the female connector. This can compensate for the gap between the second surrounding element and the female connector, ensuring that the refrigerant cannot flow out from the gap between them. It also ensures that when the second surrounding element slides open the channel, the refrigerant can only enter and exit from the specified pipe opening, thereby ensuring the sealing performance of the connection structure, preventing refrigerant leakage, and ensuring the efficient and stable operation of the refrigeration system.

[0019] Preferably, the second connecting member is provided with a second elastic part, one end of which abuts against the inner surface of the female connecting member and the other end of which abuts against the second surrounding member; the second elastic part is elastic.

[0020] By adopting the above technical solution, when the male connector and the female connector are not connected, the second elastic part can apply elastic force to the second surrounding member, so that the second sealing member on the second surrounding member tightly abuts against the second connecting member, blocking the channel between the third and fourth connecting parts, and realizing the self-sealing of the female connector; when the male connector and the female connector are connected, the second elastic part is compressed by force, so that the channel between the third and fourth connecting parts can be opened, completing the internal connection of the male connector and the female connector.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. When the male connector and the female connector are not connected, the first connecting member in the male connector, under the elastic force of the first elastic part, blocks the second passage through the first surrounding member. The second surrounding member in the female connector, under the elastic force of the second elastic part, abuts against the second connecting member through the second sealing member, blocking the passage between the third and fourth passages. At the same time, the third sealing member compensates for the gap between the second surrounding member and the female connector. Both achieve self-sealing to prevent refrigerant leakage and air impurities from entering, ensuring the efficient and stable operation of the refrigeration system. 2. When the male and female connectors are connected, the male connector and the female connector are connected by threads. The push rod gradually pushes open the first connecting part, and the top sleeve gradually pushes open the second surrounding part. The first and second elastic parts are compressed by force until the male connector is completely screwed into the female connector, realizing internal communication. When the top sleeve pushes open the second surrounding part, air is discharged to prevent refrigerant leakage. Installation and disassembly are time-saving and labor-saving, and can be disassembled and assembled multiple times. 3. The male and female connectors are made of brass, which has good thermal conductivity and corrosion resistance. It can adapt to the complex working environment of the refrigeration system, ensuring the stable performance of the connection structure during long-term use. It is not easy to loosen or leak due to material problems. In addition, it has good processing performance and can be easily processed into the required shape and size to meet the connection needs of different parts of the refrigeration system. Attached Figure Description

[0022] Figure 1This embodiment discloses a structural view of the male connector in a self-sealing connection structure applied to a refrigeration system; Figure 2 This embodiment discloses a structural view of the female connector in a self-sealing connection structure applied to a refrigeration system; Figure 3 This embodiment discloses an exploded view of the male connector in a self-sealing connection structure applied to a refrigeration system; Figure 4 This embodiment discloses an exploded view of the female connector in a self-sealing connection structure applied to a refrigeration system; Figure 5 This embodiment discloses a top view of the first support member in a self-sealing connection structure applied to a refrigeration system; Figure 6 yes Figure 2 A magnified view of area A in the middle.

[0023] Explanation of reference numerals in the attached figures: 1. Male connector; 11. First through part; 12. Second through part; 13. First support member; 130. Arc-shaped flow part; 131. Boss; 14. First sealing member; 15. Top sleeve; 2. Female connector; 21. Third through part; 22. Fourth through part; 23. Movable nut; 24. Female tube; 25. Second copper tube; 3. First connecting member; 31. Valve core; 310. Flow-breaking groove; 32. First elastic part; 33. Guide part; 4. Second connecting member; 41. Top rod; 410. Locking nut; 411. Inclined surface; 42. Second sealing member; 43. Third sealing member; 44. Second elastic part; 5. First surrounding member; 51. Fully enclosed rubber sealing ring; 52. Pressure block; 6. Second surrounding member; 61. Valve sleeve. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings.

[0025] This application discloses a self-sealing connection structure applied to a refrigeration system. See [link to relevant documentation]. Figure 1 and Figure 2The system includes a hollow male connector 1 and a hollow female connector 2, which are detachably connected. The male connector 1 has a first through portion 11 and a second through portion 12. A first connecting member 3 is provided inside the male connector 1, slidingly installed within it and connecting the first through portion 11 and the second through portion 12. A first surrounding member 5 is provided on the body of the first connecting member 3, fixed to one end of the body of the first connecting member 3. The female connector 2 has a third through portion 21 and a fourth through portion 22. A second connecting member 4 is provided inside the female connector 2, fixedly installed within it and located between the third through portion 21 and the fourth through portion 22. A second surrounding member 6 is provided on the body of the second connecting member 4, fitted onto it and slidingly connected to it. The second surrounding member 6 connects the third through portion 21 and the fourth through portion 22.

[0026] See Figure 1 and Figure 3 The male connector 1 includes a male tube and a first copper tube. One end of the male tube is fixedly connected to the first copper tube, and the other end is inserted into the female connector 2 and connected to the female connector 2 by threads. The male tube and the first copper tube are connected by welding. In other embodiments, they can be further fixed by riveting and using a pipe clamp.

[0027] See Figure 2 and Figure 4 The female connector 2 includes a movable nut 23, a female tube 24, and a second copper tube 25. The movable nut 23 is fitted onto the female tube 24 and is rotatably connected to it. One end of the female tube 24 is fixedly connected to the second copper tube 25. Furthermore, when the male tube is inserted into the female connector 2, it is threadedly connected to the movable nut 23, allowing for detachable connection. The female tube 24 and the second copper tube 25 are connected by welding. In other embodiments, they can be further secured by riveting and using a pipe clamp.

[0028] The male tube sleeve, movable nut 23, and female tube sleeve 24 are all made of brass. Brass has good thermal conductivity and corrosion resistance, which can adapt to the complex working environment of the refrigeration system, ensuring the stable performance of the connection structure during long-term use and preventing loosening or leakage due to material issues. Moreover, brass has good machinability, making it easy to process the male connector 1 and female connector 2 into the required shapes and sizes to meet the connection needs of different parts of the refrigeration system.

[0029] In one embodiment, see Figure 1 and Figure 2The first through section 11 and the second through section 12 are respectively the first and second openings on the male tube, with the first opening communicating with the first copper tube. The second opening communicates with the third through section 21 of the female connector 2. The third through section 21 and the fourth through section 22 are respectively the third and fourth openings. The second opening of the male tube communicates with the third opening of the female tube 24, and the fourth opening communicates with the second copper tube 25. The fourth opening is specifically an irregular through groove formed on the female tube 24.

[0030] Specifically, see Figure 1 and Figure 3 The male connector 1 is provided with a first support member 13, which is fixedly installed inside the male connector 1. One end of the first connecting member 3 passes through the first support member 13 and is slidably connected to the first support member 13, while the first surrounding member 5 on the other end abuts against the second through portion 12 of the male connector 1. The first connecting member 3 has a first elastic portion 32, which is fitted onto the first connecting member 3, with one end abutting against the first support member 13 and the other end abutting against the body of the first connecting member 3. The first elastic portion 32 is elastic. In addition, the first support member 13 has an arc-shaped flow portion 130.

[0031] The first support member 13 includes a triangular spring seat, which is fixedly installed on the first copper tube. The arc-shaped flow section 130 specifically comprises three sets of fan-shaped slots formed on the triangular spring seat, arranged in a triangular pattern. These fan-shaped slots communicate with the first pipe opening, allowing refrigerant to pass through. By providing these slots, the refrigerant maintains good flowability and throughput. Compared to existing support members with irregular and discontinuous shapes that are prone to turbulence, the three triangularly distributed fan-shaped slots on the triangular spring seat ensure smoother refrigerant flow and reduce the likelihood of turbulence.

[0032] See Figure 4 and Figure 5 In one embodiment, the first connecting member 3 includes a valve core 31, one end of which passes through a triangular spring seat and is slidably connected to it. Furthermore, a first surrounding member 5 is installed on the end of the valve core 31 away from the end connected to the triangular spring seat. When the male connector 1 is not connected to the female connector 2, the valve core 31 seals the second pipe opening through the first surrounding member 5, isolating the channel between the first and second pipe openings. Under the elastic force of the first elastic part 32, it also blocks the second pipe opening, achieving self-sealing. Additionally, a flow-breaking groove 310 is provided on the end of the valve core 31 that passes through the triangular spring seat. By providing the flow-breaking groove 310, the refrigerant can be broken during the sliding process of the valve core 31, allowing the valve core 31 to be stably pushed open and the channel opened during the connection process between the male connector 1 and the female connector 2.

[0033] In one embodiment, the first elastic part 32 includes a first spring. The first spring is sleeved on the valve core 31, with one end abutting against the triangular spring seat and the other end abutting against the valve core 31 body. The first spring is used to hold the valve core 31 against it and apply elastic force to the valve core 31, causing the valve core 31 to block the second pipe opening and achieve self-sealing. In addition, the triangular spring seat has a protruding boss 131. The boss 131 engages with the spring. By providing the protruding boss 131, the first spring can fit against the triangular seat, preventing vibration during refrigerant flow and affecting the refrigerant flow rate.

[0034] In one embodiment, the first surrounding component 5 includes a fully enclosed rubber sealing ring 51 and a pressure block 52. The fully enclosed rubber sealing ring 51 is fitted onto one end of the valve core 31 that abuts against the second pipe opening and is tightly pressed against the inner surface of the male pipe. The pressure block 52 passes through the fully enclosed rubber sealing ring 51 and is fixedly connected to the valve core 31, i.e., riveted, and abuts against the fully enclosed rubber sealing ring 51, so that the fully enclosed rubber sealing ring 51 is stably fitted onto the valve core 31, achieving a tight seal. Compared with the existing sealing sleeves that are directly fitted onto the valve core 31, the connection tightness is higher and the risk of falling off is lower. In addition, the fully enclosed rubber sealing ring 51 ages slowly, resulting in a more durable sealing effect.

[0035] Specifically, a first sealing element 14 is provided on one end of the male connector 1, and the first sealing element 14 is embedded in the male connector 1. A guide part 33 is provided on the first connecting member 3, and the guide part 33 is fitted onto the first connecting member and contacts the inner surface of the male connector 1; the guide part 33 also abuts against the first elastic part 32.

[0036] The first sealing element 14 includes a stainless steel pressure ring, which is embedded inside the male pipe sleeve, with the embedded end being the end of the male pipe sleeve that inserts into the female pipe sleeve 24. The stainless steel pressure ring is embedded in the contact surface between the male pipe sleeve and the female pipe sleeve 24, achieving a hard seal and improving the overall sealing performance. Furthermore, the stainless steel pressure ring adopts a triangular notch design with a triangular cross-section, resulting in even better sealing performance.

[0037] Furthermore, a guide portion 33 is fitted onto the first connecting member 3, the guide portion 33 is fitted onto the first connecting member and contacts the inner surface of the male connecting body 1; the guide portion 33 also abuts against the first elastic portion 32.

[0038] Specifically, the guide portion 33 includes a four-sided ring, which is fitted onto the valve core 31, with one end face abutting against the first spring. The side surface of the four-sided ring is also slidably connected to the inner surface of the male tube, and the four-sided ring is used to guide the valve core 31 to slide stably along the inner tube of the male tube.

[0039] Specifically, see Figure 2 and Figure 4The second connecting member 4 includes a push rod 41, one end of which is fixedly connected to the mother tube 24, and the other end extends toward the third pipe opening. The second surrounding member 6 is fitted onto the end of the push rod 41 that is not connected to the mother tube. Furthermore, Further, see Figure 2 and Figure 6 The second connecting member 4 is provided with a second sealing member 42, which is embedded within the second surrounding member 6. The second connecting member 4 is provided with a third sealing member 43, which is fitted onto the second surrounding member 6 and contacts the inner surface of the female connector 2. The second connecting member 4 is fitted with a second elastic part 44, one end of which abuts against the inner surface of the female connector 2, and the other end abuts against the second surrounding member 6; the second elastic part is elastic.

[0040] In one embodiment, see Figure 2 and Figure 4 The second enclosure 6 includes a valve sleeve 61, which is fitted onto the push rod 41. One end of the valve sleeve 61 abuts against the push rod 41, and the valve sleeve 61 is also slidably connected to the inner surface of the mother tube 24.

[0041] See Figure 2 and Figure 6 The second sealing element 42 includes an I-shaped sealing ring, which is embedded in the contact end between the valve sleeve 61 and the push rod 41, and surrounds the end of the valve sleeve 61. Furthermore, the contact surface between the push rod 41 and the I-shaped sealing ring is designed as a bevel 411, resulting in greater contact pressure between the I-shaped sealing ring and the push rod 41, thus improving the sealing strength to some extent. The third sealing element 43 includes an O-ring, which is fitted onto the valve sleeve 61 and contacts the inner surface of the mother tube 24. The second elastic part 44 includes a second spring, which is fitted onto the push rod 41, with one end abutting against the inner surface of the mother tube 24 and the other end abutting against the valve sleeve 61.

[0042] A top sleeve 15 is protruding at the second port of the male connector 1. The top sleeve 15 is integrally formed with the male pipe. When the male pipe is connected to the female pipe 24, the top sleeve 15 pushes open the valve sleeve 61 and opens the channel between the third and fourth ports.

[0043] When the male connector 1 and the female connector 2 are not connected, the second spring applies elastic force to the valve sleeve 61, causing the I-shaped sealing ring on the valve sleeve 61 to tightly press against the push rod 41, blocking the passage between the third and fourth pipe ports and achieving self-sealing. Furthermore, the O-ring seal on the valve sleeve 61 compensates for the gap between the valve sleeve 61 and the female pipe cylinder 24, ensuring that refrigerant cannot flow out from the gap between the valve sleeve 61 and the female pipe cylinder 24. It also ensures that when the valve sleeve 61 slides open the passage between the third and fourth pipe ports, the refrigerant can only enter or exit from the third pipe port, or exit or enter from the fourth pipe port.

[0044] When the male connector 1 is connected to the female connector 2, the male tube is screwed into the movable nut 23. When the male tube is half-screwed into the movable nut 23, the push rod 41 gradually pushes open the valve core 31, and the top sleeve 15 gradually pushes open the valve sleeve 61. The first spring and the second spring are compressed respectively until the male tube is fully screwed into the movable nut 23, and the end face of the embedded stainless steel pressure ring abuts against the female tube 24 and the movable nut 23. The channels between the first and second pipe ports and between the third and fourth pipe ports are fully opened, and the second and third pipe ports are connected, completing the internal connection between the male connector 1 and the female connector 2. At the same time, when the top sleeve 15 comes into contact with the valve sleeve 61, it will expel air from the male connector 1 and the female connector 2. At this time, the male connector 1 and the female connector 2 are still in a sealed state, thereby preventing refrigerant leakage.

[0045] The working principle of a self-sealing connection structure applied to a refrigeration system according to this application is as follows: When not connected, the valve core 31 in male connector 1, under the action of the first spring, seals the second pipe opening through the fully enclosed rubber sealing ring 51, thus isolating the first and second pipe opening channels; the valve sleeve 61 in female connector 2, under the action of the second spring, abuts against the top rod 41 through the I-shaped sealing ring, thus blocking the third and fourth pipe opening channels, and the O-ring sealing ring compensates for the gap between the valve sleeve 61 and the female pipe cylinder 24, so that both achieve self-sealing.

[0046] When the male and female connectors 2 are connected, the male tube is screwed into the movable nut 23, the push rod 41 gradually pushes open the valve core 31, and the top sleeve 15 gradually pushes open the valve sleeve 61. The first and second springs are compressed until the male tube is fully screwed in, and the end face of the stainless steel pressure ring abuts against the female tube 24 and the movable nut 23. At this time, the first and second pipe ports and the third and fourth pipe ports are fully opened and the second and third pipe ports are connected, completing the internal connection. When the top sleeve 15 pushes open the valve sleeve 61, air is discharged to prevent refrigerant leakage.

[0047] This technical solution enables direct connection and disassembly of refrigeration system joints under system pressure, providing excellent and durable sealing performance. Installation and disassembly are time-saving and labor-saving, and can be disassembled and reassembled multiple times. It solves the problems of existing refrigeration systems requiring pre-vacuuming for connection, inconvenient operation requiring refrigerant evacuation for disassembly, refrigerant loss, and residual impurities, ensuring efficient and stable operation of the refrigeration system. At the same time, the optimized flow structure improves the refrigerant flow efficiency.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A self-sealing connection structure for use in a refrigeration system, characterized in that: It includes a hollow male connector (1) and a hollow female connector (2), wherein the male connector (1) and the female connector (2) are detachably connected; The male connector (1) has a first through part (11) and a second through part (12); a first connecting member (3) is provided inside the male connector (1), the first connecting member (3) is slidably installed inside the male connector (1), and the first connecting member (3) connects the first through part (11) and the second through part (12); a first surrounding member (5) is provided on the body of the first connecting member (3), and the first surrounding member (5) is fixed to one end of the body of the first connecting member (3); The female connector (2) has a third through part (21) and a fourth through part (22); a second connecting member (4) is provided inside the female connector (2), the second connecting member (4) is fixedly installed inside the female connector (2) and is located between the third through part (21) and the fourth through part (22); a second surrounding member (6) is provided on the body of the second connecting member (4), the second surrounding member (6) is sleeved on the second connecting member (4) and is slidably connected to the second connecting member (4); the second surrounding member (6) connects the third through part (21) and the fourth through part (22).

2. The self-sealing connection structure applied to a refrigeration system according to claim 1, characterized in that: The male connector (1) is provided with a first support member (13), which is fixedly installed inside the male connector (1); one end of the first connecting member (3) passes through the first support member (13) and is slidably connected to the first support member (13), and the first surrounding member (5) on the other end abuts against the second through part (12) of the male connector (1); the first connecting member (3) has a first elastic part (32), which is fitted on the first connecting member (3), with one end abutting against the first support member (13) and the other end abutting against the body of the first connecting member (3); the first elastic part (32) is elastic.

3. The self-sealing connection structure applied to a refrigeration system according to claim 2, characterized in that: The first support member (13) has an arc-shaped flow section (130).

4. The self-sealing connection structure applied to a refrigeration system according to claim 1, characterized in that: The male connector (1) is provided with a first sealing element (14) at one end, and the first sealing element (14) is embedded in the male connector (1).

5. The self-sealing connection structure applied to a refrigeration system according to claim 2, characterized in that: The first connecting member (3) is fitted with a guide part (33), which is fitted onto the first connecting member and contacts the inner surface of the male connecting body (1); the guide part (33) also abuts against the first elastic part (32).

6. The self-sealing connection structure applied to a refrigeration system according to claim 1, characterized in that: The second connecting member (4) is provided with a second sealing member (42), which is embedded in the second surrounding member (6).

7. The self-sealing connection structure applied to a refrigeration system according to claim 1, characterized in that: The second connecting member (4) is provided with a third sealing member (43), which is fitted onto the second surrounding member (6) and contacts the inner surface of the female connecting body (2).

8. The self-sealing connection structure applied to a refrigeration system according to claim 1, characterized in that: The second connecting member (4) is fitted with a second elastic part (44), one end of which abuts against the inner surface of the female connecting body (2), and the other end abuts against the second surrounding member (6); the second elastic part is elastic.

Images