Commercial central air conditioning compressor connecting pipe

Abstract

The utility model discloses a commercial central air conditioning uses compressor connecting pipe, including bifurcated main pipe and bifurcated elbow, and bifurcated main pipe is connected with bifurcated elbow through connecting piece, and the connecting end of connecting piece and bifurcated elbow is equipped with two sealing structures, and two sealing structures jointly constitute the double sealing interface of radial and axial combination, and bifurcated elbow end part is equipped with the mounting ring outside, and the mounting ring is equipped with the connecting ring, and the end of connecting piece is inserted between connecting ring and bifurcated elbow, and connecting piece and connecting ring are equipped with the thread of cooperation, and the connection of bifurcated elbow and connecting piece is realized through rotating connecting ring, and two sealing structures include sealing ring and sealing pad, and sealing ring is located between the inner wall of connecting piece and bifurcated elbow, and sealing ring is located between connecting piece and mounting ring end face, and through setting the double sealing structure of radial and axial combination in the connecting end of connecting piece and bifurcated elbow, forms multiple sealing barriers, and the sealing reliability of junction is improved significantly, and effectively prevents refrigerant leakage.

Description

Technical Field

[0001] This utility model belongs to the field of refrigeration pipe technology, and particularly relates to compressor connecting pipes for commercial central air conditioning. Background Technology

[0002] When installing residential and commercial multi-split air conditioners, connecting pipes are used in the connecting pipeline to distribute and collect the refrigerant. These connecting pipes are generally made of copper tubing. Similarly, the installation of refrigerant-cooled central air conditioning units also utilizes copper tubing connections to achieve cooling. The connecting pipes connect these copper tubing to each indoor unit, highlighting their importance for the installation and operation of air conditioners. For example, the branch pipe for air conditioners with patent publication number CN203704466U is assembled through a threaded connection between a tee pipe and a branch pipe component. A seal is formed by the flared end of the branch pipe fitting against the beveled surface of the tee pipe opening. While this structure achieves weld-free assembly, its seal relies entirely on the metal-to-metal fit of a single flared end. Under long-term system operation and vibration conditions, the seal reliability remains insufficient, failing to meet the stringent sealing performance requirements of commercial central air conditioning compressor connecting pipes. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned technical problems existing in the prior art, and to provide a compressor connecting pipe for commercial central air conditioning, which makes the sealing structure more reliable, the assembly convenient, and can effectively resist vibration and pressure impact.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A compressor connecting pipe for commercial central air conditioning systems includes a main branch pipe and a branch bend pipe, which are connected by a connector. Its characteristic is that:

[0006] The connector and the branch bend are connected by two sealing structures. The two sealing structures together form a double sealing interface that combines radial and axial sealing, thereby improving the sealing performance between the connector and the branch bend.

[0007] Furthermore, an installation ring is provided on the outer side of the branch bend, and the installation ring is provided with a connecting ring. The end of the connector is inserted between the connecting ring and the branch bend. The connector and the connecting ring are provided with matching threads. By rotating the connecting ring, the branch bend and the connector are connected.

[0008] Furthermore, the two sealing structures include a sealing ring and a sealing gasket. The sealing ring is located between the inner wall of the connector and the branch bend, and the sealing ring is located between the connector and the end face of the mounting ring.

[0009] Furthermore, the sealing ring contains an elastic component.

[0010] Furthermore, the sealing ring has a U-shaped cross-section.

[0011] Furthermore, the sealing gasket is located between the mounting ring and the end face of the connector. The deformation of the sealing gasket achieves a seal between the connector and the branch bend.

[0012] Furthermore, the sealing gasket includes a support ring and a mounting ring arranged coaxially, with the mounting ring located inside the support ring.

[0013] Furthermore, a cavity is formed inside the mounting ring, and a support body is installed inside the cavity.

[0014] Furthermore, the support body includes a support rod, with abutment plates fixed at both ends of the support rod, and the abutment plates on both sides abutting against the inner wall of the support ring and the mounting ring, respectively.

[0015] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0016] 1. In this utility model, by setting a double sealing structure combining radial and axial elements at the connection end of the connector and the branch bend, multiple sealing barriers are formed, which significantly improves the sealing reliability of the connection and effectively prevents refrigerant leakage.

[0017] 2. In this utility model, the sealing ring adopts a U-shaped cross-section design and has built-in elastic components. When it is squeezed, it can generate adaptive deformation and continuously maintain close contact with the inner wall of the connector and the outer wall of the branch bend. The support body set inside the sealing gasket provides continuous elastic compensation for the sealing gasket through the abutment plate and the internal cavity structure, ensuring that it can maintain stable sealing performance under system pressure fluctuations or long-term vibration conditions.

[0018] 3. In this utility model, a threaded connection is adopted, and quick assembly can be achieved by rotating the connecting ring, which greatly improves the installation efficiency. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] Figure 1 This is a three-dimensional structural diagram of the compressor connecting pipe for commercial central air conditioning in this utility model;

[0021] Figure 2 This is a cross-sectional view of the connection structure between the connector and the branching bend in this utility model.

[0022] Figure 3 for Figure 2 Enlarged schematic diagram of a local structure at point A;

[0023] Figure 4 for Figure 2 Enlarged schematic diagram of the local structure at point B.

[0024] In the diagram: 1-Branch main pipe; 2-Branch bend; 3-Connector; 4-Sealing structure; 5-Mounting ring; 6-Connecting ring; 7-Sealing ring; 8-Sealing gasket; 9-Elastic component; 10-Support ring; 11-Mounting ring; 12-Cavity; 13-Support body; 14-Support rod; 15-Abutment plate. Detailed Implementation

[0025] like Figures 1 to 4 As shown, this utility model relates to a compressor connecting pipe for a commercial central air conditioning system, comprising a main branch pipe 1 and branch bend pipes 2, which are connected by an independent connector 3. The number and shape of the branch bend pipes 2 are variable.

[0026] An integrally formed mounting ring 5 is provided on the outer side of the end of the branching bend 2. A rotatable connecting ring 6 is fitted on the mounting ring 5. The end of the connector 3 is inserted into the annular space between the connecting ring 6 and the branching bend 2. In order to achieve reliable connection and locking, mutually matching threads are machined on the outer wall of the connector 3 and the inner wall of the connecting ring 6 respectively. By screwing the connecting ring 6, the connector 3 and the branching bend 2 can be firmly connected together by the threads.

[0027] Similarly, the other end of connector 3 is connected to the branch straight pipe. The connection method can be the same as that of the branch bend 2, or it can be welded.

[0028] The connection end between the connector 3 and the branch bend 2 is equipped with two independent sealing structures 4, which together form a double sealing interface combining radial and axial forces, thereby significantly improving the sealing reliability of the connection end.

[0029] The first layer is a radial sealing structure 4, which is achieved by a sealing ring 7. The sealing ring 7 is located between the outer wall of the branching bend 2 and the inner wall of the connector 3. Specifically, an installation groove is opened on the surface of the branching bend 2, and the sealing ring 7 is embedded in the installation groove. After assembly, the two sides of the sealing ring 7 are tightly abutted against the surface of the branching bend 2 and the inner wall of the connector 3, respectively, to form a radial seal.

[0030] Furthermore, the sealing ring 7 has a U-shaped cross-section with the opening facing the opening end of the connector 3, which can improve the convenience of installation. The sealing ring 7 contains an elastic member 9. The elastic member 9 is deformed by the compression between the branching bend 2 and the connector 3, so as to improve the sealing contact pressure and self-adaptive deformation ability of the sealing ring 7 and improve the sealing performance.

[0031] The second layer is the axial sealing structure 4, which is achieved by a sealing gasket 8. The sealing gasket 8 is placed between the end face of the mounting ring 5 and the connector 3. It fills the gap by deforming under axial pressure, thereby achieving a seal.

[0032] The sealing gasket 8 adopts a composite structure, including a support ring 10 and a mounting ring 11 arranged coaxially. The mounting ring 11 is located inside the support ring 10. To further enhance its elastic compensation capability, a cavity 12 is formed inside the mounting ring 11. A support body 13 is provided inside the cavity 12. The support body 13 includes a support rod 14. Abutment plates 15 are fixed at both ends of the support rod 14. The abutment plates 15 on both sides are stably abutted against the inner walls of the support ring 10 and the mounting ring 11, thereby providing internal support for the overall deformation of the sealing gasket 8.

[0033] Working principle: During assembly, the sealing ring 7 is first installed into the mounting groove of the branch bend 2, and the sealing gasket 8 is placed on the end face of the mounting ring 5. Then, the end of the connector 3 is inserted and the connecting ring 6 is tightened. During this process, the end face of the connector 3 will compress the sealing gasket 8, causing it to deform axially and achieve axial sealing. At the same time, the sealing ring 7 is compressed radially, and its U-shaped lip fits tightly against the inner wall of the connector 3 and the outer wall of the branch bend 2, achieving radial sealing. These two sealing structures 4 work together to form an extremely reliable sealing system, effectively preventing refrigerant leakage. It is especially suitable for commercial central air conditioning compressor systems with extremely high sealing requirements.

[0034] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A compressor connecting pipe for commercial central air conditioning, comprising a main branch pipe and a branch bend pipe, wherein the main branch pipe and the branch bend pipe are connected by a connector, characterized in that: The connector and the branching bend are provided with two sealing structures at their connection ends. The two sealing structures together form a double sealing interface that combines radial and axial sealing, thereby improving the sealing performance between the connector and the branching bend.

2. The compressor connecting pipe for commercial central air conditioning according to claim 1, characterized in that: The branching bend is provided with an external mounting ring at its end, and the mounting ring is provided with a connecting ring. The end of the connector is inserted between the connecting ring and the branching bend. The connector and the connecting ring are provided with matching threads. By rotating the connecting ring, the branching bend and the connector are connected.

3. The compressor connecting pipe for commercial central air conditioning according to claim 1, characterized in that: The two sealing structures include a sealing ring and a sealing gasket. The sealing ring is located between the inner wall of the connector and the branch bend, and between the connector and the end face of the mounting ring.

4. The compressor connecting pipe for commercial central air conditioning according to claim 2, characterized in that: The sealing ring contains an elastic component.

5. The compressor connecting pipe for commercial central air conditioning according to claim 2, characterized in that: The sealing ring has a U-shaped cross-section.

6. The compressor connecting pipe for commercial central air conditioning according to claim 2, characterized in that: The sealing gasket is located between the mounting ring and the end face of the connector. The deformation of the sealing gasket achieves a seal between the connector and the branch bend.

7. The compressor connecting pipe for commercial central air conditioning according to claim 6, characterized in that: The sealing gasket includes a support ring and a mounting ring arranged coaxially, with the mounting ring located inside the support ring.

8. The compressor connecting pipe for commercial central air conditioning according to claim 7, characterized in that: The mounting ring has a cavity inside, and a support is provided inside the cavity.

9. The compressor connecting pipe for commercial central air conditioning according to claim 8, characterized in that: The support body includes a support rod, and abutment plates are fixed at both ends of the support rod. The abutment plates on both sides abut against the inner wall of the support ring and the mounting ring, respectively.

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