Air conditioner connection pipe for a refrigeration system

Abstract

The utility model discloses an air conditioner connecting pipe for refrigerating system, including bellows, bellows both ends fixed connection have connecting pipe, the connecting pipe end part is provided with the joint, the utility model provides an air conditioner connecting pipe for refrigerating system, the spiral line stainless steel bellows body that the utility model adopts has excellent flexibility, can be in the installation big angle, multidirectional bending without worrying that pipe diameter significantly narrows or produces dead fold, greatly simplifies the installation procedure and reduces the requirement to operating space.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration system technology, and in particular to an air conditioning connecting pipe for refrigeration systems. Background Technology

[0002] Air conditioning connecting pipes are crucial components in air conditioning systems, used to connect indoor and outdoor units and transport refrigerant and condensate. Their performance directly affects the cooling effect, energy efficiency, and system stability of the air conditioner. Currently, most air conditioning connecting pipes on the market are made of pure copper. Copper pipes are widely used due to their excellent thermal conductivity, corrosion resistance, and mature processing technology. However, this solution still has the following significant drawbacks in practical applications: First, the manufacturing cost of all-copper connecting pipes is relatively high. As a non-ferrous metal, copper's market price fluctuates greatly, and raw material costs account for a high proportion of the overall cost of air conditioning connecting pipes, which is not conducive to the control of overall machine costs. This cost pressure is particularly prominent in the context of large-scale production and fierce market competition.

[0003] Secondly, all-copper connecting pipes have poor bending performance. During installation, the connecting pipes often need to be bent according to the site layout. Copper pipes are prone to plastic deformation when bent, especially at large angles or repeatedly, which can cause significant local reduction in the inner diameter of the pipe. This deformation leads to a reduction in the refrigerant flow cross-sectional area and an increase in flow resistance. This not only reduces the refrigerant delivery efficiency but may also cause abnormal system pressure, decreased energy efficiency, and even affect the long-term reliability of the air conditioner.

[0004] In addition, copper pipes have relatively high hardness, requiring special tools and skilled operators to bend them, making the installation process less flexible and convenient, which also increases the difficulty and time cost of on-site construction. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing an air conditioning connection pipe for refrigeration systems. This connection pipe, through the adoption of a specific corrugated pipe structure, effectively improves bending performance, reduces manufacturing costs, and simultaneously ensures the reliability and sealing of the connection.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an air conditioning connecting pipe for a refrigeration system, comprising a corrugated pipe, with connecting pipes fixedly connected to both ends of the corrugated pipe, and a joint provided at the end of the connecting pipe.

[0007] In the above scheme, preferably, the corrugated pipe is a helical corrugated pipe.

[0008] In the above scheme, preferably, the corrugated pipe has straight pipe sections at both ends, and the connecting pipe has straight pipe holes that fit into the straight pipe sections.

[0009] In the above scheme, preferably, the connecting pipe is welded and fixed to the corrugated pipe, and a welding part is provided between the straight pipe section and the connecting pipe.

[0010] In the above scheme, preferably, the corrugated pipe is a thin-walled spiral corrugated pipe with a wall thickness of 0.15-0.4mm.

[0011] In the above scheme, preferably, the wall thickness of the corrugated pipe is 0.28 mm.

[0012] In the above scheme, preferably, the corrugated pipe is made of stainless steel.

[0013] In the above scheme, preferably, the connecting pipe is made of copper or stainless steel.

[0014] In the above scheme, preferably, the corrugated pipe and connecting pipe are covered with an insulating sleeve.

[0015] In the above scheme, preferably, the connecting pipe includes a connecting part, the straight pipe hole is provided in the connecting part, and the connecting part is provided with a stop surface that connects with the straight pipe hole.

[0016] The beneficial effects of this utility model are as follows: This utility model provides an air conditioning connecting pipe for a refrigeration system. The spiral stainless steel corrugated pipe body has excellent flexibility, allowing for large-angle and multi-directional bending during installation without worrying about significant narrowing of the pipe diameter or dead bends, greatly simplifying the installation process and reducing the requirements for operating space. At the same time, replacing the traditional all-copper structure with stainless steel and combining it with a thin-wall design significantly reduces material costs and provides excellent corrosion resistance and high reliability. The connection is ensured to be firm and the sealing reliability is guaranteed by the sleeve fit and welding fixation of the straight pipe section and the straight pipe hole. In addition, the stop surface set inside the connecting pipe facilitates precise positioning during assembly, improves product consistency and quality control, and makes the structure have good versatility, which can be widely used in various air conditioning systems. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the present invention.

[0018] Figure 2 This utility model Figure 1 A partially enlarged structural diagram of the corrugated pipe and connecting pipe. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: See below Figures 1-2 .

[0020] An air conditioning connecting pipe for a refrigeration system includes a stainless steel spiral corrugated pipe 1. The spiral direction of the corrugated pipe 1 can be clockwise or counterclockwise, which is not limited here. The corrugated pipe 1 is preferably a thin-walled pipe with a wall thickness ranging from 0.15 to 0.4 mm. In this embodiment, the optimal wall thickness is 0.28 mm to balance strength, flexibility and cost. At the same time, the stainless steel corrugated pipe has excellent corrosion resistance, which improves the durability of the connecting pipe.

[0021] At both ends of the corrugated pipe 1, a straight pipe section 101 is formed. The straight pipe section 101 is integrally formed with the corrugated pipe 1. Each end of the corrugated pipe 1 is connected to a connecting pipe 2. The connecting pipe 2 includes a connecting part 202 that is connected to the straight pipe section 101. The inner hole of the connecting part 202 facing the corrugated pipe 1 is a straight pipe hole 201. The end of the corrugated pipe 1 is inserted into the straight pipe hole 201 of the connecting pipe 2 through the straight pipe section 101.

[0022] The connecting pipe 2 can be made of copper to facilitate matching and welding with standard copper connectors 3 in the system (such as flared nut connectors).

[0023] To achieve welding positioning after the connection of the connecting part 202 and the straight pipe part 101, an annular stop surface 203 is formed at the bottom of the straight pipe hole 201. The stop surface 203 can be a conical surface. When the straight pipe part 101 of the corrugated pipe 1 is inserted into the straight pipe hole 201, its end finally abuts against the stop surface 203, thereby achieving fast and accurate axial positioning. Preferably, when the outer diameter of the straight pipe part 101 matches the inner diameter of the straight pipe hole 201, a clearance fit or transition fit is preferred, thereby improving the accuracy and concentricity during connection positioning.

[0024] After positioning, welding (such as silver soldering or argon arc welding) is performed at the annular gap between the straight pipe section 101 and the connecting section 202 of the connecting pipe 2 to form a complete and dense annular weld section 102. Specifically, this weld section 102 is located between the end of the connecting section 202 and the outer wall of the straight pipe section 101, thereby fixing the bellows 1 and the connecting pipe 2 into a whole and ensuring the airtightness and strength of the connection. Subsequently, a standard connector 3 can be installed or welded to the other end of the connecting pipe 2.

[0025] For heat preservation, an insulation sleeve 4 can be installed on the outside of the assembled corrugated pipe 1 and connecting pipe 2.

[0026] In this embodiment, the corrugated pipe 1 can be made of 022Cr17Ni12Mo2, the connecting pipe 2 can be made of TP2, and the connector 3 can be made of Hpb59-1.

[0027] When installing using the aforementioned air conditioning connecting pipes, installers can easily bend part 1 of the corrugated pipe into the desired shape according to the actual positions of the indoor and outdoor units. Due to its excellent flexibility, even when bending at large angles in a small space, the inner diameter of the pipe can remain basically unchanged, ensuring smooth refrigerant flow and avoiding system performance degradation caused by a reduction in the flow cross-section.

[0028] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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 this utility model.

Claims

1. An air conditioning connecting pipe for a refrigeration system, characterized in that: It includes a corrugated pipe (1), with connecting pipes (2) fixed at both ends of the corrugated pipe (1), and a connector (3) provided at the end of the connecting pipe (2); The corrugated pipe (1) maintains the inner diameter after bending through the corrugations provided thereon.

2. An air conditioning connecting pipe for a refrigeration system according to claim 1, characterized in that: The corrugated pipe (1) is a spiral corrugated pipe.

3. An air conditioning connecting pipe for a refrigeration system according to claim 1, characterized in that: The corrugated pipe (1) has straight pipe sections (101) at both ends, and the connecting pipe (2) has straight pipe holes (201) that are fitted into the straight pipe sections (101).

4. An air conditioning connecting pipe for a refrigeration system according to claim 3, characterized in that: The connecting pipe (2) is welded and fixed to the corrugated pipe (1), and a welding part (102) is provided between the straight pipe part (101) and the connecting pipe (2).

5. An air conditioning connecting pipe for a refrigeration system according to claim 1, characterized in that: The corrugated pipe (1) is a thin-walled spiral corrugated pipe with a wall thickness of 0.15-0.4mm.

6. An air conditioning connecting pipe for a refrigeration system according to claim 1 or 5, characterized in that: The wall thickness of the corrugated pipe (1) is 0.28 mm.

7. An air conditioning connecting pipe for a refrigeration system according to claim 1, characterized in that: The corrugated pipe (1) is made of stainless steel.

8. An air conditioning connecting pipe for a refrigeration system according to claim 1, characterized in that: The connecting pipe (2) is made of copper or stainless steel.

9. An air conditioning connecting pipe for a refrigeration system according to claim 1, characterized in that: The corrugated pipe (1) and the connecting pipe (2) are covered with an insulating sleeve (4).

10. An air conditioning connecting pipe for a refrigeration system according to claim 3, characterized in that: The connecting pipe (2) includes a connecting part (202), the straight pipe hole (201) is provided in the connecting part (202), and the connecting part (202) is provided with a stop surface (203) that connects with the straight pipe hole (201).

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