The existing air return pipe assembly for refrigerators is mainly composed of an aluminum alloy return pipe and a copper capillary tube wrapped by aluminum foil tape. The return air pipe assembly made of copper and aluminum raw materials is wound in the actual application process. In the humid environment of the refrigerator, electrochemical corrosion is prone to occur, which reduces the effective service life of the refrigerator. In addition, the aluminum tube of the same specification is 30% of the quality of the copper tube, and the material cost is about 30% of the copper. The selection of aluminum alloy raw materials can greatly reduce the material cost and give the product a good competitive advantage.
Skill completion elements:
The present invention aims to deal with one of the above-mentioned technical problems in the existing skills at least to a certain extent. For this reason, an object of the present invention is to provide an aluminum alloy capillary tube, which has the advantage of reducing costs.
Another purpose of the present invention is to provide aAluminum alloy capillaryThe air return pipe assembly is designed to deal with the risk of electrochemical corrosion, extend the service life of the air return pipe and the refrigerator using this return air pipe.
In order to deal with the above-mentioned skill problems, the present invention adopts the following skill plan:
An aluminum alloy capillary tube has an outer diameter of 1.8 mm and a wall thickness of 0.6 mm, which is formed by drawing an aluminum tube with a diameter of 5.9 mm and a wall thickness of 0.9 mm from 1060 raw materials through a drawing device.
A return air pipe assembly includes the aluminum alloy capillary tube.
Compared with the existing skills, the beneficial effects of the present invention are:
The aluminum alloy capillary tube of the present invention has a low price advantage and high efficiency production method compared with a copper capillary tube. The air return tube of the aluminum alloy capillary tube avoids the danger of electrochemical corrosion, and extends the service life of the air return tube and the refrigerator using the return air tube .
Detailed implementation method
An aluminum alloy capillary tube 1, the aluminum alloy capillary tube 1 has an outer diameter of 1.8mm and a wall thickness of 0.6mm. It is made of 1060 raw materials, an aluminum tube with a diameter of 5.9mm and a wall thickness of 0.9mm, which is drawn by a drawing equipment constitute. One kind of air return pipe always becomes an aluminum alloy return air pipe 2 and the aluminum alloy capillary tube 1 which are wrapped by aluminum foil tape 3.
The aluminum alloy capillary tube of the present invention has a low price advantage and high efficiency production method compared with a copper capillary tube. The air return tube of the aluminum alloy capillary tube avoids the danger of electrochemical corrosion, and extends the service life of the air return tube and the refrigerator using the return air tube .