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Combined copper-aluminum tube and manufacturing method thereof

A manufacturing method and technology for copper-aluminum pipes, which are applied in the directions of pipes, rigid pipes, pipes/pipe joints/pipes, etc., can solve the problems of poor copper-aluminum bonding tightness, low production efficiency, easy to cause damage, etc. Simple structure and the effect of improving production efficiency

Active Publication Date: 2016-08-24
左铁军 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the current non-welded copper-aluminum tubes with high requirements, difficult to realize, easy to cause damage, poor bonding of copper and aluminum, unstable performance, poor quality, low production efficiency, etc., and designs a new combined copper-aluminum tube Tube and its manufacturing method

Method used

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  • Combined copper-aluminum tube and manufacturing method thereof

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Embodiment Construction

[0019] Combined copper-aluminum tube of the present invention, as figure 1 As shown, it includes an aluminum tube 1. The aluminum tube 1 is divided into end parts 2 located at both ends and a main body part 3 located in the middle. The end part 2 of the aluminum tube 1 is in the shape of a bell mouth.

[0020] Both ends of the aluminum tube 1 are equipped with an outer copper sleeve 4, an inner copper sleeve 5 and a compression nut 6, and the compression nut 6 is set on the aluminum tube 1.

[0021] Both the outer copper sleeve 4 and the inner copper sleeve 5 are divided into a cylindrical straight section 7 and a bell-shaped flaring section 8 .

[0022] The outer wall of the flaring section 8 of the inner copper sleeve 5 is in contact with the inner wall of the end 2 of the corresponding aluminum tube 1, and the straight section 7 of the inner copper sleeve 5 is inserted into the main body 3 of the copper tube 1 and connected to the main body 3 of the copper tube 1. inner wa...

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Abstract

The invention discloses a combined copper aluminum tube and a manufacturing method of the combined copper aluminum tube. The combined copper aluminum tube comprises an aluminum tube body, the aluminum tube body is divided into two ends and a main body portion located in the middle, the ends of the aluminum tube body are in a horn mouth shape, the two ends of the aluminum tube body are each provided with an outer copper casing pipe, an inner copper casing pipe and a nut, and the aluminum tube body is sleeved with the nuts. According to the combined copper aluminum tube, the structure is simple, the aluminum tube body is in fit with the two copper casing pipes after flaring is carried out so that the flaring structures of the aluminum tube body and the copper casing pipes can be in tight fit, no damage is caused, the manufacturing precision is improved, the sealing performance of the copper aluminum tube is improved, the good performance of the copper aluminum tube is ensured, the technological requirements are lowered, and production efficiency is improved.

Description

technical field [0001] The invention relates to a connecting pipe for an air conditioner, in particular to a combined copper-aluminum pipe and a manufacturing method thereof. Background technique [0002] The indoor unit and outdoor unit of the air conditioner transport refrigerant through connecting pipes. Due to the high price of copper, in order to save costs, the current connecting pipes for air conditioners are mainly copper-aluminum welded pipes, which reduces the material cost of the connecting pipes, but the production of copper-aluminum Welded pipes also have high requirements for copper-aluminum welding process, resulting in high production cost, low production pass rate and high risk of leakage. [0003] The prior patents "A Non-Welded Copper-Aluminum Tube for Air Conditioning" (publication number: 200975568Y) and "composite structure of aluminum connecting pipe ends" (publication number: 201081062Y) both proposed a non-welded aluminum with copper clad at one end....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L9/02F16L19/02
CPCF16L9/02F16L19/0206
Inventor 左铁军杨训赵越孙德兴陈军
Owner 左铁军