Air-conditioning pipe processing method

Abstract

The invention relates to an air-conditioning pipe and in particular relates to an air-conditioning pipe processing method. The invention aims to provide an air-conditioning pipe processing method with high production efficiency and good mechanical properties of pipes. According to the technical scheme for achieving the aim of the invention, the air-conditioning pipe processing method comprises the following steps: 1) straightening a to-be-processed aluminum pipe, and guiding the aluminum pipe to enter a heating area by a roller; 2) feeding the heated aluminum pipe into a mold molding area, heating wrapped plastic particles into a molten state, and feeding the particles into the mold molding area; 3) coating the molten plastics onto the outer surface of the aluminum pipe in the mold molding area; and 4) cooling and feeding the aluminum pipe wrapped with plastics into a winding machine. The invention has the advantages that the coating material and the outer surface of the aluminum pipe are compounded in a molten state due to the method, so that the compounded air-conditioning pipe has excellent mechanical properties, and the requirements of two-end connection flaring and the like are met.

Description

technical field [0001] The invention relates to an air-conditioning pipe, in particular to a processing method for the air-conditioning pipe. Background technique [0002] The air-conditioning tube or condenser tube is a device used to hold refrigerant in refrigeration appliances such as air conditioners, freezers or refrigerators. Usually the material is an aluminum-plastic composite pipe, that is, the surface of the aluminum pipe is covered with a layer of plastic PVC, PE or other materials. The purpose of this is to enhance the fastness and anti-oxidation of the aluminum pipe. [0003] Due to the poor mechanical properties of the aluminum tube, copper tubes are often welded at both ends of the aluminum tube when it needs to be connected with other components. Put on a plastic heat shrinkable tube, (PVC, PE) or other materials, and the air-conditioning connecting tubes that are popular in the market now use this process. [0004] Although this air-conditioning pipe proce...

AI Technical Summary

Problems solved by technology

[0004] Although this air-conditioning pipe processing technology is widely used, there are many problems.

First of all, because the air-conditioning pipe produced by this processing method is to cover the processed aluminum pipe (PVC, PE) or other materials, and then use a heated beacon box to heat and shrink, and then bend or coil the pipe, so in the process When bending, the PVC or PE material will warp, which will not protect the aluminum pipe.

[0005] Secondly, the air-conditioning pipes must be welded with copper pipes and aluminum pipes, because the aluminum pipes are too soft. If there are no copper pipes, when the aluminum pipes are flared and tightened with the nuts of the air-conditioning unit, there will be cracks and leakage of refrigerant or other phenomena.

When copper-aluminum welding is performed, it is inevitable that there will be leaks, which will bring unnecessary trouble and loss to users.

[0006] Thirdly, most of the existing air-conditioning tube freezer evaporators and refrigerator evaporators use aluminum tubes, but bumps and scratches are unavoidable in the production and processing process. If they are scratched, the wall thickness of the aluminum tubes will be thinned. It will greatly shorten the life time of oxidation and decay at the scratch

[0007] Fourth, for some cladding process materials such as PVC, the material will crack when it is below minus 10 degrees in winter, and it will have no effect on the protection of aluminum pipes.