Refrigerant pipe self-sealing connection structure
Patent Information
- Application Number
- CN202522375877.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-10
- Publication Date
- 2026-09-08
- Estimated Expiration
- 2035-11-10
AI Technical Summary
[0004]基于此，有必要针对现有的冷媒管道连接结构连接便捷性与密封稳定性不足的技术问题，提供一种冷媒管道自密封连接结构
[0018] The aforementioned refrigerant pipeline self-sealing connection structure forms a self-sealing relationship with the mating seat through the self-sealing structure. When the self-sealing structure is fitted into the mating seat, the first sealing part abuts against the bottom wall surface of the mating seat. Based on the clearance space of the annular groove, the first sealing part deforms and stacks towards the back side during the compression process to fully fill the effective space between the self-sealing structure and the inner wall of the mating seat, thereby greatly enhancing the sealing performance between the male and female connectors. At the same time, the second and third sealing parts can reinforce the lateral sealing performance of the self-sealing structure to achieve the purpose of multi-stage sealing. In addition, based on the full fit between the first, second, and third sealing parts and the inner wall of the mating seat, and the coordinated locking and limiting of the first and second locking structures, the connection stability between the male and female connectors can be further enhanced.
Smart Images
Figure CN224730265U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline connection structure technology, and in particular to a self-sealing connection structure for refrigerant pipelines. Background Technology
[0002] Refrigerant piping connection structures are critical components in refrigeration / air conditioning systems, used to reliably connect two pipe sections and ensure that refrigerant does not leak under high pressure and that air / moisture does not intrude. Their core requirements are: sealing performance, strength, durability (vibration / corrosion resistance), and ease of installation / maintenance. Currently, the main connection methods for refrigerant piping include welded connections, flared connections, and quick-connect fittings. Welded connections involve inserting two copper pipe sections into a fitting (straight connector, elbow, tee, etc.), filling the gaps with solder (phosphorus copper / silver solder) at high temperature, and forming a seamless metal connection after cooling. Flared connections involve widening the pipe ends into a 45° flare using a special tool, pressing the flare against the conical sealing surface of the fitting with a nut, and sealing using the plastic deformation of the metal. Quick-connect fittings use a male and female connector for insertion and locking, with a built-in spring valve (automatically closing the pipe when disconnected), and a rubber sealing ring for dynamic sealing.
[0003] However, existing quick-connect fittings for refrigerant pipe connections lack self-sealing functionality, making it difficult to balance the ease of connection with sealing stability, resulting in insufficient sealing and connection stability. Utility Model Content
[0004] Therefore, it is necessary to provide a self-sealing connection structure for refrigerant pipelines to address the technical problems of insufficient connection convenience and sealing stability in existing refrigerant pipeline connection structures.
[0005] A refrigerant pipeline self-sealing connection structure includes a male connector and a female connector that mate with each other. The male connector includes a first body, a self-sealing structure, and a first snap-fit structure. The self-sealing structure is located at one end of the first body, and the first snap-fit structure is located on the side surface of the self-sealing structure. Correspondingly, the female connector includes a second body, a mating seat, and a second snap-fit structure. The mating seat is located at one end of the second body, and the second snap-fit structure is located on the side surface of the mating seat. When the male and female connectors are mated, the self-sealing structure fits into the mating seat, and the first and second snap-fit structures engage in a snap-fit connection.
[0006] The self-sealing structure includes a first sealing part, a second sealing part, and a third sealing part. The first sealing part is located on the end face of the self-sealing structure, that is, on the end face where the first body fits into the female seat. The second and third sealing parts are located on the side surfaces of the self-sealing structure. The second sealing part and the third sealing part are respectively arranged circumferentially on the side surface where the first body fits into the female seat. The second and third sealing parts are arranged in parallel from the end of the first body where the first sealing part is located to the other end, thereby forming a multi-segment sealing structure arranged in a ring.
[0007] The self-sealing structure is also provided with an annular groove, which is located on the side surface of the first main body between the first sealing part and the second sealing part.
[0008] In one embodiment, the first snap-fit structure described above is disposed between the second sealing portion and the third sealing portion.
[0009] In one embodiment, the side surface of the first sealing part, the second sealing part, and the third sealing part are respectively interference-fitted with the side wall surface of the mating seat.
[0010] In one embodiment, the first main body is provided with a first sealing part at one end, and a pin and a pin sleeve are also provided. The pin is located at the center of the end face of the first main body, and the pin sleeve is sleeved between the pin and the first sealing part.
[0011] In one embodiment, the bottom wall of the mating seat is provided with a valve core and a mating groove. The valve core is located at the center of the bottom wall of the mating seat corresponding to the ejector pin, and the mating groove is located on the outer periphery of the valve core. When the self-sealing structure is mated into the mating seat, the ejector pin abuts against the valve core. The end face of the ejector pin sleeve abuts against the mating groove.
[0012] In one embodiment, a sealing ring is fitted into the aforementioned mating groove.
[0013] In one embodiment, the first sealing portion is disposed circumferentially on the outer periphery of the ejector sleeve along the end face of the first body, thereby forming an annular structure.
[0014] In one embodiment, there is a fitting gap between the first sealing part and the ejector sleeve.
[0015] In one embodiment, the first body is provided with a first threaded structure at one end facing away from the self-sealing structure to realize the threaded connection function at the end of the first body.
[0016] In one embodiment, a fourth sealing portion is provided at one end of the first threaded structure described above.
[0017] In one embodiment, the second body is provided with a second threaded structure at one end facing away from the mating seat.
[0018] The aforementioned refrigerant pipeline self-sealing connection structure forms a self-sealing relationship with the mating seat through the self-sealing structure. When the self-sealing structure is fitted into the mating seat, the first sealing part abuts against the bottom wall surface of the mating seat. Based on the clearance space of the annular groove, the first sealing part deforms and stacks towards the back side during the compression process to fully fill the effective space between the self-sealing structure and the inner wall of the mating seat, thereby greatly enhancing the sealing performance between the male and female connectors. At the same time, the second and third sealing parts can reinforce the lateral sealing performance of the self-sealing structure to achieve the purpose of multi-stage sealing. In addition, based on the full fit between the first, second, and third sealing parts and the inner wall of the mating seat, and the coordinated locking and limiting of the first and second locking structures, the connection stability between the male and female connectors can be further enhanced. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the self-sealing connection structure of the refrigerant pipeline in one embodiment; Figure 2 This is an exploded structural diagram of a refrigerant pipe self-sealing connection structure in one embodiment. Figure 3 This is an exploded structural diagram of a refrigerant pipe self-sealing connection structure in one embodiment. Figure 4 for Figure 3 A schematic cross-sectional view of the BB section in the illustrated embodiment. Detailed Implementation
[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0024] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0025] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0026] Please see Figures 1 to 4This utility model discloses a refrigerant pipeline self-sealing connection structure 1, which includes a male connector 10 and a female connector 20 that cooperate with each other. The male connector 10 includes a first body 11, a self-sealing structure, and a first snap-fit structure 16. The self-sealing structure is disposed at one end of the first body 11, and the first snap-fit structure 16 is disposed on the side surface of the self-sealing structure. Correspondingly, the female connector 20 includes a second body 21, a mating seat 22, and a second snap-fit structure 23. The mating seat 22 is disposed at one end of the second body 21, and the second snap-fit structure 23 is disposed on the side surface of the mating seat 22. When the male connector 10 and the female connector are connected, the self-sealing structure fits into the mating seat 22, and the first snap-fit structure 16 and the second snap-fit structure 23 engage, thereby achieving a quick connection between the male connector 10 and the female connector 20. Based on the above configuration, the self-sealing structure includes a first sealing part 12, a second sealing part 13, and a third sealing part 14. The first sealing part 12 is disposed on the end face of the self-sealing structure, that is, the first sealing part 12 is disposed on the end face of the first body 11 that fits into the female seat 20. The second sealing part 13 and the third sealing part 14 are disposed on the side surface of the self-sealing structure. The second sealing part 13 and the third sealing part 14 are respectively disposed circumferentially on the side surface of the first body 11 that fits into the female seat 20. Furthermore, the second sealing part 13 and the third sealing part 14 are arranged in parallel from the end of the first body 11 where the first sealing part 12 is disposed to the other end, thereby forming a multi-segment sealing structure arranged in a ring. More specifically, the self-sealing structure also includes an annular groove a, which is located on the side surface of the first main body 11 between the first sealing part 12 and the second sealing part 13. This annular groove a provides clearance space for the deformation of the first sealing part 12, allowing it to deform more significantly. This improves the adhesion and contact area between the first sealing part 12 and the inner wall of the mating seat 22, thus enhancing the sealing performance of the self-sealing structure. It can be seen that the refrigerant pipeline self-sealing connection structure 1 of this invention forms a self-sealing relationship with the mating seat 22 through the self-sealing structure. When the self-sealing structure is fitted into the mating seat 22, the first sealing part 12 abuts against the bottom wall surface of the mating seat 22. Based on the clearance space of the annular groove a, the first sealing part 12 deforms and stacks towards the back side during the compression process, fully filling the effective space between the self-sealing structure and the inner wall of the mating seat 22, thereby greatly enhancing the sealing performance between the male connector 10 and the female seat 20. Meanwhile, the second sealing part 13 and the third sealing part 14 can reinforce the lateral sealing performance of the self-sealing structure to achieve multi-stage sealing. In addition, based on the full fit between the first sealing part 12, the second sealing part 13 and the third sealing part 14 and the inner wall of the mating seat 22, and in conjunction with the snap-fit limiting of the first snap-fit structure 16 and the second snap-fit structure 23, the connection stability between the male head 10 and the female seat 20 can be further enhanced.
[0027] Furthermore, the first snap-fit structure 16 is disposed between the second sealing part 13 and the third sealing part 14. When the first snap-fit structure 16 and the second snap-fit structure 23 are engaged, the second sealing part 13 and the third sealing part 14 can seal the two sides of the first snap-fit structure 16 and the inner wall of the mating seat 22, thereby ensuring the sealing performance and connection stability of the front and rear ends of the first snap-fit structure 16 and reducing the inflow of external liquid into the mating seat 22.
[0028] Specifically, in one embodiment, the side surface of the first sealing part 12, the second sealing part 13 and the third sealing part 14 are respectively interference-fitted with the side wall surface of the mating seat 22, thereby providing a basis for the sealing performance between the male head 10 and the female seat 20.
[0029] Furthermore, the first main body 11 is provided with a first sealing part 12 at one end, and a pin 111 and a pin sleeve 112 are also provided. The pin 111 is located at the center of the end face of the first main body 11, and the pin sleeve 112 is sleeved between the pin 111 and the first sealing part 12. Correspondingly, the bottom wall of the mating seat 22 is provided with a valve core 221 and a mating groove b. The valve core 221 is located at the center of the bottom wall of the mating seat 22 corresponding to the pin 111, and the mating groove b is located on the outer periphery of the valve core 221. When the self-sealing structure is mated into the mating seat 22, the pin 111 abuts against the valve core 221; the end face of the pin sleeve 112 abuts against the mating groove b.
[0030] Specifically, in one embodiment, a sealing ring is embedded in the mating groove b to ensure the sealing of the valve core 221 in both the independent and mating states of the female seat 20.
[0031] Furthermore, the first sealing part 12 is disposed circumferentially on the outer periphery of the ejector sleeve 112 along the end face of the first body 11, thereby forming an annular structure. Specifically, in one embodiment, a fitting gap c is provided between the first sealing part 12 and the ejector sleeve 112 to ensure the mobility of the ejector sleeve 112. At the same time, when the self-sealing structure is fitted and connected with the mating seat 22, the first sealing part 12 can fill the fitting gap c, thereby ensuring the sealing of the side surface of the ejector sleeve 112 in the mating state.
[0032] Furthermore, a first threaded structure 113 is provided at one end of the first main body 11 facing away from the self-sealing structure to realize the threaded connection function at the end of the first main body 11. Specifically, in one embodiment, a fourth sealing part 15 is provided at one end of the first threaded structure 113 to enhance the sealing performance when the first threaded structure 113 is connected to an external pipe.
[0033] Furthermore, a second threaded structure 211 is provided at one end of the second body 21 facing away from the mating seat 22 to realize the threaded connection function at the end of the second body 21.
[0034] In summary, the refrigerant pipeline self-sealing connection structure of this utility model forms a self-sealing relationship with the mating seat through the self-sealing structure. When the self-sealing structure is fitted into the mating seat, the first sealing part abuts against the bottom wall surface of the mating seat. Based on the clearance space of the annular groove, the first sealing part deforms and stacks towards the back side during the compression process to fully fill the effective space between the self-sealing structure and the inner wall of the mating seat, thereby greatly enhancing the sealing performance between the male and female connectors. At the same time, the second and third sealing parts can reinforce the lateral sealing performance of the self-sealing structure to achieve the purpose of multi-stage sealing. In addition, based on the full cooperation between the first, second, and third sealing parts and the inner wall of the mating seat, and the locking and limiting of the first and second locking structures, the connection stability between the male and female connectors can be further enhanced.
[0035] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0036] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A self-sealing connection structure for refrigerant pipelines, characterized in that, include: A male connector and a female connector that mate with each other; wherein the male connector includes a first body, a self-sealing structure, and a first snap-fit structure, the self-sealing structure being disposed at one end of the first body, and the first snap-fit structure being disposed on the side surface of the self-sealing structure; correspondingly, the female connector includes a second body, a mating seat, and a second snap-fit structure, the mating seat being disposed at one end of the second body, and the second snap-fit structure being disposed on the side surface of the mating seat; when the male connector and the female connector are mated and connected, the self-sealing structure is mated into the mating seat, and the first snap-fit structure and the second snap-fit structure are engaged and connected; The self-sealing structure includes a first sealing part, a second sealing part, and a third sealing part. The first sealing part is located on the end face of the self-sealing structure, that is, on the end face where the first body fits into the female seat. The second and third sealing parts are located on the side surfaces of the self-sealing structure. The second sealing part and the third sealing part are respectively arranged circumferentially on the side surface where the first body fits into the female seat. Furthermore, the second sealing part and the third sealing part are arranged in parallel from the end of the first body where the first sealing part is located to the other end, thereby forming a multi-segment sealing structure arranged in a ring. The self-sealing structure is also provided with an annular groove, which is located on the side surface of the first main body between the first sealing part and the second sealing part.
2. The refrigerant pipeline self-sealing connection structure according to claim 1, characterized in that, The first snap-fit structure is located between the second sealing part and the third sealing part.
3. The refrigerant pipeline self-sealing connection structure according to claim 2, characterized in that, The side surface of the first sealing part, the second sealing part, and the third sealing part are respectively interference-fitted with the side wall surface of the mating seat.
4. The refrigerant pipeline self-sealing connection structure according to claim 3, characterized in that, The first main body is provided with a first sealing part at one end, and a ejector pin and ejector pin sleeve are also provided. The ejector pin is located at the center of the end face of the first main body, and the ejector pin sleeve is sleeved between the ejector pin and the first sealing part.
5. The refrigerant pipeline self-sealing connection structure according to claim 4, characterized in that, The bottom wall of the mating seat is provided with a valve core and a mating groove. The valve core is located at the center of the bottom wall of the mating seat, and the mating groove is located on the outer periphery of the valve core. When the self-sealing structure is mated into the mating seat, the ejector pin abuts against the valve core. The end face of the ejector pin sleeve abuts against the mating groove.
6. The refrigerant pipeline self-sealing connection structure according to claim 5, characterized in that, A sealing ring is fitted inside the groove.
7. The refrigerant pipeline self-sealing connection structure according to claim 6, characterized in that, The first sealing part is disposed circumferentially on the outer periphery of the ejector sleeve along the end face of the first main body, thereby forming a ring structure.
8. The refrigerant pipeline self-sealing connection structure according to claim 7, characterized in that, There is a fitting gap between the first sealing part and the ejector sleeve.
9. The refrigerant pipeline self-sealing connection structure according to claim 8, characterized in that, The first main body has a first threaded structure at one end facing away from the self-sealing structure to realize the threaded connection function at the end of the first main body.
10. The refrigerant pipeline self-sealing connection structure according to claim 9, characterized in that, A fourth sealing part is provided at one end of the first thread structure.