A refrigeration system line connection conversion fitting

Abstract

The utility model relates to a refrigerating system pipeline connection conversion joint. The refrigerating system pipeline connection conversion joint includes pipeline body, spacing portion, nut and snap ring, the spacing portion sets up at the end of pipeline body, the inner wall of nut is equipped with the clamping groove, the snap ring sets up at the clamping groove, is used for when the nut is connected with spacing portion, fixes the relative position between the nut and spacing portion, realizes the fixed connection of the nut and pipeline body. The scheme provided in the application can completely eliminate the nut loosening hidden danger caused by glue aging, ensure the long-term stable connection of the nut and pipeline body, and further eliminate the refrigerant leakage problem, reduce the pollution risk to the environment. At the same time, the steps such as thread splicing and smearing sealing glue in the existing assembly can be effectively omitted, the assembly operation is greatly simplified, the assembly efficiency is improved, the improvement from "thread connection" to "permanent connection" and from "inefficient assembly" to "efficient assembly" is realized.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection technology, and in particular to a pipe connection conversion joint for a refrigeration system. Background Technology

[0002] Refrigeration system piping connection refers to the splicing and fixing of pipes in refrigeration equipment such as air conditioners, refrigerators, and automotive air conditioners to connect core components such as compressors, condensers, evaporators, and expansion valves, forming a closed refrigerant circulation channel, ensuring efficient and leak-free delivery of refrigerant within the system.

[0003] Current piping connections typically employ split connectors with threaded joints, relying on sealant for sealing. During assembly, because the outer volume of the connector's end is larger than its inner volume, the connector and other connecting components usually need to be threaded through a nut first, then multiple split connector assemblies are joined together using threads, and finally, sealant is applied to complete the seal. While the assembly technology is mature, over long-term use, the sealant gradually ages and deteriorates, causing the nut to loosen and fall off, leading to refrigerant leakage. This not only poses a potential environmental pollution hazard but also significantly reduces energy efficiency. Furthermore, the complex and cumbersome assembly process greatly impacts work efficiency, making the overall assembly process time-consuming and inefficient.

[0004] Therefore, there is an urgent need to design a refrigeration system piping connection conversion joint that can completely eliminate the hidden danger of nut loosening caused by glue aging, ensure the long-term stable connection between the nut and the piping body, thereby eliminating the problem of refrigerant leakage and reducing the risk of environmental pollution. At the same time, it can effectively eliminate the steps of thread splicing and applying sealant in the existing assembly, greatly simplifying the assembly operation, significantly improving the assembly efficiency, and realizing the improvement from "threaded connection" to "permanent connection" and from "inefficient assembly" to "efficient assembly". Summary of the Invention

[0005] To overcome the problems existing in related technologies, this application provides a refrigeration system pipeline connection adapter. This adapter can completely eliminate the hidden danger of nut loosening caused by glue aging, ensure a long-term stable connection between the nut and the pipeline body, thereby eliminating the problem of refrigerant leakage and reducing the risk of environmental pollution. At the same time, it can effectively eliminate the steps of thread splicing and applying sealant in existing assembly, greatly simplifying the assembly operation, significantly improving the assembly efficiency, and realizing the improvement from "threaded connection" to "permanent connection" and from "inefficient assembly" to "efficient assembly".

[0006] This application provides a refrigeration system piping connection adapter, including a piping body, a limiting part, a nut, and a retaining ring; the limiting part is disposed at the end of the piping body for connection with the nut; the inner wall of the nut is provided with a retaining groove; the retaining ring is disposed at the retaining groove for fixing the relative position between the nut and the limiting part when the nut is connected to the limiting part, so as to achieve a fixed connection between the nut and the piping body.

[0007] In a preferred embodiment of this application, the limiting portion includes a limiting end, a limiting groove, and an inlet end; the inlet end, the limiting groove, and the limiting end are arranged sequentially along the front-to-back direction of connection; wherein, the cross-section of the limiting end is generally stepped; the inlet end is generally frustum-shaped, and the diameter of the inlet end increases sequentially from front to back.

[0008] In a preferred embodiment of this application, the limiting end includes a first ring and a second ring; the first ring and the second ring are arranged sequentially along the front-back direction of connection, and the diameter of the first ring is smaller than the diameter of the second ring.

[0009] In a preferred embodiment of this application, the card slot includes a first card slot and a second card slot; the first card slot and the second card slot are arranged sequentially along the front-to-back direction of connection, and the depth of the first card slot is less than the depth of the second card slot.

[0010] In a preferred embodiment of this application, the nut is further provided with an inlet groove; the inlet groove is located on the inner side of the front end of the nut.

[0011] In a preferred embodiment of this application, the depth of the inlet groove is equal to the difference between the radii of the first ring and the second ring; and the distance between the inlet groove and the first slot is less than the width of the second ring.

[0012] In a preferred embodiment of this application, a sealing ring is also included; the sealing ring is disposed on the inner sidewall of the limiting portion.

[0013] In a preferred embodiment of this application, the pipeline body includes a first body and a second body; the first body and the second body are integrally formed and interconnected; the included angle between the first body and the second body is 135 degrees.

[0014] The technical solution provided in this application has the following beneficial effects: The refrigeration system pipeline connection conversion joint of this application includes a pipeline body, a limiting part, a nut, and a retaining ring. Through the mutual cooperation of the limiting groove, the first retaining groove, the second retaining groove, and the retaining ring, and by utilizing the elastic deformation characteristics of the retaining ring itself (specifically, by setting the retaining ring at the second retaining groove and setting a first retaining groove with a groove depth smaller than the second retaining groove, so that when the retaining ring falls into the limiting groove, it can be precisely limited to the area enclosed by the first retaining groove and the limiting groove through subsequent movement and return operations, and lock the relative position of the nut and the limiting part), the nut is permanently limited on the limiting part and cannot be removed. This allows the retaining ring to replace the connection function of traditional threads, breaks through the dependence of the nut on a split connecting core, allows the connecting core to be manufactured using an integrated molding process, and completely eliminates the leakage risk caused by nut loosening due to glue aging, improves the reliability of the seal, and greatly reduces the risk of environmental pollution. Meanwhile, during the entire assembly process, there is no need for complicated steps such as threaded splicing and applying sealant. Simply put the nut into the pipe body and move it to the appropriate position. The connection can be completed by utilizing the cooperation between the components, which greatly simplifies the assembly operation, significantly reduces the assembly difficulty, and improves the assembly efficiency. It realizes the improvement from "threaded connection" to "permanent connection" and from "inefficient assembly" to "efficient assembly".

[0015] It should be noted that the pipe connection conversion joint in this application is mainly used in refrigeration systems, but it can also be used in other pipe connections.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0017] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0018] Figure 1 This is a cross-sectional schematic diagram of a refrigeration system piping connection adapter shown in an embodiment of this application; Figure 2 This is a cross-sectional schematic diagram of the refrigeration system piping connection adapter and nut fit shown in the embodiments of this application; Figure 3 This is another cross-sectional schematic diagram showing the connection adapter and nut fit of the refrigeration system piping in an embodiment of this application; Figure 4This is another cross-sectional schematic diagram of the refrigeration system piping connection adapter and nut fit shown in the embodiments of this application; Figure 5 This is a schematic diagram of the structure of the refrigeration system piping connection conversion joint shown in the embodiment of this application.

[0019] Explanation of reference numerals in the attached figures: 1. Pipeline body; 11. First body; 12. Second body; 2. Limiting part; 21. Limiting end; 211. First ring; 212. Second ring; 22. Limiting groove; 23. Inlet end; 3. Nut; 31. Slot; 311. First slot; 312. Second slot; 32. Inlet groove; 4. Snap ring; 5. Sealing ring. Detailed Implementation

[0020] Preferred embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0021] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0022] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0023] Current piping connections typically employ split connectors with threaded joints, relying on sealant for sealing. During assembly, because the outer volume of the connector's end is larger than its inner volume, the connector and other connecting components usually need to be threaded through a nut first, then multiple split connector assemblies are joined together using threads, and finally, sealant is applied to complete the seal. While the assembly technology is mature, over long-term use, the sealant gradually ages and deteriorates, causing the nut to loosen and fall off, leading to refrigerant leakage. This not only poses a potential environmental pollution hazard but also significantly reduces energy efficiency. Furthermore, the complex and cumbersome assembly process greatly impacts work efficiency, making the overall assembly process time-consuming and inefficient.

[0024] To address the aforementioned issues, this application provides a refrigeration system piping connection adapter that completely eliminates the risk of nut loosening caused by glue aging, ensuring a long-term stable connection between the nut and the piping body, thereby preventing refrigerant leakage and reducing environmental pollution risks. Simultaneously, it effectively omits steps such as threaded splicing and applying sealant in existing assembly processes, greatly simplifying assembly operations and significantly improving assembly efficiency, achieving an improvement from "threaded connection" to "permanent connection," and from "inefficient assembly" to "efficient assembly."

[0025] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings. Example

[0026] Please see Figures 1-5 This application discloses a refrigeration system piping connection adapter, comprising a piping body 1, a limiting part 2, a nut 3, and a retaining ring 4. The piping body 1, as the main structure of the entire adapter, plays a crucial role in carrying and transmitting refrigerant. For example, the piping body 1 includes a first body 11 and a second body 12, which are integrally formed and interconnected. Preferably, the included angle between the first body 11 and the second body 12 is 135 degrees (also known as a 45-degree bend) to better accommodate piping connection requirements at different angles.

[0027] The limiting part 2 is disposed at the end of the pipe body 1 and is used to connect with the nut 3 to ensure the tightness and reliability of the connection. Specifically, the limiting part 2 includes a limiting end 21, a limiting groove 22, and an inlet end 23; the inlet end 23, the limiting groove 22, and the limiting end 21 are arranged sequentially along the front-to-back direction of the connection, that is, during connection, the nut 3 passes through the inlet end 23, the limiting groove 22, and the limiting end 21 in sequence. The limiting end 21 has a stepped cross-section to restrict the nut 3 from continuing to move along the direction of the pipe body. For example, the limiting end 21 includes a first ring 211 and a second ring 212, which are arranged sequentially along the front-to-back direction of the connection, and the diameter of the first ring 211 is smaller than the diameter of the second ring 212. The inlet end 23 is generally frustum-shaped, and the diameter of the inlet end 23 increases sequentially from front to back to facilitate the easy insertion of the nut 3. The limiting groove 22 is located between the limiting end 21 and the inlet end 23. When connected, the retaining ring 4 can fall into the limiting groove 22 as the nut 3 moves, and cooperate with the retaining groove 31 to achieve a stable connection between the limiting part 2 and the nut 3.

[0028] The inner wall of the nut 3 is provided with a groove 31, and the retaining ring 4 is disposed in the groove 31. It is used to fix the relative position between the nut 3 and the limiting part 2 when the nut 3 is connected to the limiting part 2, thereby achieving a fixed connection between the nut 3 and the pipeline body 1. For example, the groove 31 includes a first groove 311 and a second groove 312, which are arranged sequentially along the front-to-back direction of the connection. The depth of the first groove 311 is less than the depth of the second groove 312. The retaining ring 4 is disposed in the second groove 312. By setting the first groove 311 and the second groove 312 with different depths, they can better cooperate with the retaining ring 4 to achieve precise positioning and fixation, thereby effectively preventing the nut 3 from loosening and falling off during use. Furthermore, the nut 3 also includes an inlet groove 32, which is disposed on the inner side of the front end of the nut 3. The groove depth of the inlet groove 32 is equal to the radius difference (D1) between the first ring 211 and the second ring 212, so that when the inlet groove 32 is located at the second ring 212, its groove wall can abut against the second ring 212. Moreover, the distance between the inlet groove 32 and the first slot 311 is less than the width (D2) of the second ring 212, so that the first slot 311 and the second slot 312 can communicate with the limiting groove 22, which facilitates limiting the retaining ring 4 within the area it encloses.

[0029] Furthermore, the refrigeration system piping connection adapter also includes a sealing ring 5, which is disposed on the inner wall of the limiting part 2. This enhances the sealing at the connection point with other piping when connected to other piping (the sealing ring is tightly compressed between the inner wall of the limiting part 2 and the outer wall of the other piping, forming a reliable sealing barrier), further preventing refrigerant leakage.

[0030] Working principle: When connecting refrigeration system piping, first prepare to align one end of the piping body 1 with the refrigeration system piping to be connected. Then, as follows... Figure 1-5 As shown, the nut 3 is inserted into the pipe to be connected and moved towards the pipe body 1. During the movement, the nut 3 first passes the inlet end 23 of the limiting part 2 and is smoothly inserted under the guidance of the inlet end 23. Subsequently, the nut 3 continues to move to the limiting groove 22. When the second slot 312 is directly opposite the limiting groove 22, the retaining ring 4 provided at the second slot 312 will fall into the limiting groove 22. Then, the nut 3 continues to move toward the pipe body 1 until the groove wall of the inlet groove 32 abuts against the second ring 212, preventing the nut 3 from moving further toward the pipe body 1, and prompting the user to move the nut 3 back until the first slot 311 is directly opposite the limiting groove 22. At this time, the retaining ring 4 is squeezed and limited in the area enclosed by the first slot 311 and the limiting groove 22, preventing the nut 3 from moving, thereby permanently limiting the nut 3 on the limiting part 2, and thus completing the connection between the pipes.

[0031] In this embodiment, the refrigeration system piping connection adapter of this application includes a piping body, a limiting part, a nut, and a retaining ring. Through the mutual cooperation of the limiting groove, the first retaining groove, the second retaining groove, and the retaining ring, and utilizing the elastic deformation characteristics of the retaining ring itself (specifically, by setting the retaining ring at the second retaining groove and setting a first retaining groove with a shallower depth than the second retaining groove, so that when the retaining ring falls into the limiting groove, subsequent movement and retraction operations can precisely limit the retaining ring to the area enclosed by the first retaining groove and the limiting groove, locking the relative position of the nut and the limiting part), the nut is permanently fixed on the limiting part and cannot be removed. This allows the retaining ring to replace the traditional threaded connection function, breaking the reliance of the nut on a separate connecting core, allowing the connecting core to be manufactured using an integrated molding process, and completely eliminating the leakage risk caused by nut loosening due to glue aging, improving sealing reliability, and greatly reducing the risk of environmental pollution. Meanwhile, during the entire assembly process, there is no need for complicated steps such as threaded splicing and applying sealant. Simply put the nut into the pipe body and move it to the appropriate position. The connection can be completed by utilizing the cooperation between the components, which greatly simplifies the assembly operation, significantly reduces the assembly difficulty, and improves the assembly efficiency. It realizes the improvement from "threaded connection" to "permanent connection" and from "inefficient assembly" to "efficient assembly". In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not 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 on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

Claims

1. A refrigerant system line connection conversion fitting, comprising: It includes the pipe body (1), the limiting part (2), the nut (3) and the retaining ring (4); The limiting part (2) is provided at the end of the pipeline body (1) for connection with the nut (3); The nut (3) has a groove (31) on its inner wall; The retaining ring (4) is located in the retaining groove (31) and is used to fix the relative position between the nut (3) and the limiting part (2) when the nut (3) is connected to the limiting part (2), so as to achieve a fixed connection between the nut (3) and the pipeline body (1).

2. The refrigeration system piping connection adapter according to claim 1, characterized in that, The limiting part (2) includes a limiting end (21), a limiting groove (22), and an inlet end (23); The inlet end (23), the limiting groove (22), and the limiting end (21) are arranged sequentially along the front and rear directions of connection; The cross-section of the limiting end (21) is generally stepped; The inlet end (23) is generally truncated cone-shaped, and the diameter of the inlet end (23) increases sequentially from front to back.

3. The refrigeration system piping connection adapter according to claim 2, characterized in that, The limiting end (21) includes a first ring (211) and a second ring (212); The first ring (211) and the second ring (212) are arranged sequentially along the front-to-back direction of the connection, and the diameter of the first ring (211) is smaller than the diameter of the second ring (212).

4. The refrigeration system piping connection adapter according to claim 3, characterized in that, The card slot (31) includes a first card slot (311) and a second card slot (312); The first card slot (311) and the second card slot (312) are arranged sequentially along the front-to-back direction of the connection, and the depth of the first card slot (311) is less than the depth of the second card slot (312).

5. The refrigeration system piping connection adapter according to claim 4, characterized in that, The nut (3) is also provided with an inlet groove (32); The inlet groove (32) is located on the inner side of the front end of the nut (3).

6. The refrigeration system piping connection adapter according to claim 5, characterized in that, The groove depth of the inlet groove (32) is equal to the difference in radius between the first ring (211) and the second ring (212); Furthermore, the distance between the inlet groove (32) and the first slot (311) is less than the width of the second ring (212).

7. The refrigeration system tubing conversion coupling of claim 1, wherein, It also includes a sealing ring (5); The sealing ring (5) is disposed on the inner side wall of the limiting part (2).

8. The refrigeration system piping connection adapter according to claim 1, characterized in that, The pipeline body (1) includes a first body (11) and a second body (12); The first body (11) and the second body (12) are integrally formed and interconnected; The angle between the first body (11) and the second body (12) is 135 degrees.

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