Tube used for refrigerating device and its processing method

Abstract

The invention relates to a pipe used for a refrigeration device. The pipe is formed by connecting two ends of an aluminum pipe (1) with a joint of a copper pipe(2); the pipe wall of the splicing terminal (21) of both the copper pipe (2) and the aluminum pipe (1) is in the shape of a cone, through the shaping of a cone extruding machine, the copper pipe (2) is spliced with the aluminum copper (1), and the copper pipe (2) is connected with the aluminum copper (1) through resistance welding; and the inner diameter of the splicing terminal part of both the copper pipe and the aluminum pipe does not draw down, so as not to influence flow and efficiency. The refrigeration device has the advantages of good contact of splicing fitting surface, solid and uniform welding, good sealing performance, simple processing technology and reliable and stable quality.

Description

technical field [0001] The invention relates to a pipe used in a refrigeration device and a butt joint processing method thereof, in particular to a pipe used for an air conditioner connecting pipe, a radiator pipe of a refrigerator, a radiator pipe of a refrigerator, and an evaporator pipe. Background technique [0002] With the development of technology, and in order to save the use of copper materials and reduce costs, pipes used in refrigeration equipment, such as air-conditioning connection pipes, refrigerator radiator pipes, refrigerator radiator pipes, and evaporator pipes, are gradually adopted Aluminum pipes are used instead of copper pipes, but the pipe head still needs to adopt copper pipe joints, that is, the two ends of the aluminum pipes are connected to the copper pipe joints, so that the aluminum pipes and the two ends need to be connected with the copper pipes. The connection between the copper tube and the aluminum tube is generally direct nozzle-to-mouth w...

AI Technical Summary

Problems solved by technology

[0002] With the development of technology, and in order to save the use of copper materials and reduce costs, pipes used in refrigeration equipment, such as air-conditioning connection pipes, refrigerator radiator pipes, refrigerator radiator pipes, and evaporator pipes, are gradually adopted Aluminum pipes are used instead of copper pipes, but the pipe head still needs to adopt copper pipe joints, that is, the two ends of the aluminum pipes are connected to the copper pipe joints, so that the aluminum pipes and the two ends need to be connected with the copper pipes. The connection between the copper tube and the aluminum tube is generally direct nozzle-to-mouth welding, which has poor welding performance and is prone to leakage and breakage. The other is to reduce the diameter of the end of the copper tube and plug it into the aluminum tube and weld it through resistance. This kind of connection welding effectively improves the welding strength and sealing performance, but due to the shrinkage of the copper pipe end, the original diameter is changed, resulting in throttling, affecting circulation, reducing efficiency and increasing energy consumption

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