Connecting pipe for split type air conditioner

Abstract

The invention relates to a connecting pipe for a split type air conditioner, which comprises an aluminum intermediate-section pipe body, copper pipe heads arranged at both ends of the connecting pipe and heat-shrinkable pipes clad at the outer sides of the intermediate-section pipe body and the copper pipe heads; and one end of the copper pipe heads is inserted in the intermediate-section pipe body for welding, protective pipes are arranged at the outer sides at the connected corresponding positions of the copper pipe heads and the intermediate-section pipe body and are clad at the inserting and the welding positions of the copper pipe heads, and the heat-shrinkable pipes are clad with the protective pipes. When the welding position of the connecting pipe bends, the protective pipes, the copper pipe heads and the intermediate-section pipe body distort at the same time, and because the protective pipes are in close contact with the copper pipe heads and the intermediate-section pipe body, the original centralized bending stress is dispersed to each part of the contact surface to avoid the phenomenon of welding loosing and fracture of the aluminum intermediate-section pipe body due to the excessively centralized stress, and the normal installation and the running of the air conditioner are ensured.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, in particular to a split-type air conditioner connecting pipe in which a protective pipe is provided outside the corresponding position of the connection between the copper pipe head and the middle pipe body, and the strength of the copper-aluminum welding is ensured by dispersing the bending stress. . Background technique [0002] An air conditioner is an artificial indoor climate control device, the main components of which include a refrigeration cycle system including a compressor, a condenser, a throttling device, and an evaporator, and an air cycle system including a blower, an air duct, and an air inlet and outlet. The air conditioner absorbs indoor air, changes its temperature through the evaporator and condenser of the heat exchange device, and then discharges it back into the room to realize the functions of cooling or heating and dehumidification, so as to provide peop...

AI Technical Summary

Problems solved by technology

[0012] In the prior art, the copper pipe head is inserted into the aluminum middle pipe body for welding. When the welding position of the connecting pipe is bent and deformed by external force, the stress concentrates on the copper-aluminum welding part. It is soft, and the rate of change during deformation is much greater than that of copper, so it is easy to cause loose welding at the welding part or break the middle pipe body, causing leakage of refrigerant and malfunction of the air conditioner

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