Manufacturing technology for refrigerator air return pipe

Abstract

The invention relates to a manufacturing technology for a refrigerator air return pipe. The manufacturing technology includes the following steps: selecting a metal tube made of aluminum as a first tube, inserting a second tube internally communicated with the first tube to the flaring end part of the first tube, wrapping the outer surfaces of the first tube and the second tube with aluminum tapes; sleeving the combined part of the first tube and the second tube with a heat-shrinkable casing pipe, and binding the first tube with the third tube in a binding manner; sleeving the first tube and the third tube with a casing pipe; placing the first tube and the third tube sleeved by the casing pipe to a drying oven for heating, bending and forming an air return pipe formed by the first tube, the second tube and the third tube through bending equipment, so as to complete the manufacture of the air return pipe. The manufacturing technology provided by the invention improves the working efficiency, guarantees the quality of air return pipes and alleviates the labor intensity of working personnel.

Description

technical field [0001] The invention relates to the technical field of refrigeration cycle components in a refrigerator, in particular to a manufacturing process of a return air pipe for a refrigerator. Background technique [0002] Existing air return pipes for refrigerators are composed of two copper pipes. The first copper pipe has a large aperture, and the second copper pipe (capillary) has a small diameter. The first copper pipe is connected to the outlet of the refrigerator evaporator and the compressor. The pipe between the air inlet and the second copper pipe are connected between the evaporator and the condenser to reduce the pressure of the high-pressure liquefied refrigerant output from the compressor; the existing return pipe production process mainly relies on Manual, low work efficiency, and the quality of the return air pipe produced is poor. And in this way, the two copper pipes are directly bound together. Such a structure and process design will produce th...

AI Technical Summary

Problems solved by technology

[0005] 3. Due to the heavy weight and high price of copper, the weight of the refrigerator is increased and the manufacturing cost is also increased

[0006] 4. The outer surface of the air return pipe (the binding of the first copper pipe and the second copper pipe) applied to the refrigerator is also exposed, and the energy in the air return pipe will also diffuse to the outside, resulting in waste of energy

Images