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An assembly method of a small steel pipe inside an air-conditioning liquid reservoir

An assembly method and technology of accumulator, applied in refrigeration and liquefaction, lighting and heating equipment, refrigeration components, etc., can solve the problem that the connection between the body and the steel pipe is easy to loosen, the shape of the welded part is not ideal, and the welding quality does not matter. It can achieve the effect of good welding surface quality, easy to master and improve welding quality

Active Publication Date: 2016-12-07
WUHU SANHUA REFRIGERATION FITTINGS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The straight copper pipe is not easy to rust because it is not in contact with the outside air because it is inside the body. Using copper pipes in this part has no advantage over iron pipes, and the price of copper and iron in the same volume The ratio is 5:1, so in essence, the selection of copper tubes for this part obviously has a higher manufacturing cost, so the current straight tubes have begun to use steel tubes
[0003] In the aforementioned liquid storage device, since the connection between the body and the steel pipe, the body is a structure with a thicker wall thickness, while the steel pipe is a structure with a thinner wall thickness, the heat capacity of the welded part of the two is significantly different, and there is It is difficult to set the welding conditions, and the connection between the body and the steel pipe is easy to loosen during welding, resulting in an unsatisfactory shape of the welded part, and due to the combined effect of the above factors, the welding quality is not high and affects the use effect. Therefore, it is necessary to Develop a reasonable assembly method to achieve the best assembly effect and improve the stability of the device

Method used

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  • An assembly method of a small steel pipe inside an air-conditioning liquid reservoir
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  • An assembly method of a small steel pipe inside an air-conditioning liquid reservoir

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Positioning steel pipe: such as figure 2 As shown, take out the small steel pipe, fix one end of a positioning rod through the small steel pipe, and then put the larger diameter end of the small steel pipe on the conical liquid outlet on the air conditioner accumulator, and the other end of the positioning rod Passing through the top of the air conditioner accumulator, the positioning rod includes two sections, one of which has a larger diameter and can be sleeved on the larger diameter end of the small steel pipe, and the other has a smaller diameter and can be sleeved on the air conditioner accumulator. , the positioning rod extends to the outside of the top of the air conditioner accumulator, and the length of the excess part is 4cm;

[0022] (2) Pre-fixing: After pre-fixing in step (1), use a resistance welding machine to perform spot welding at the connection between the small steel pipe and the conical liquid outlet of the air-conditioning accumulator, and th...

Embodiment 2

[0025] Example 2: the rest are the same as Example 1, the difference is that in the step (2), the number of electric welding parts is 4; in the step (3), the control welding current is 185A, and the argon gas flow is 7L / min, the waiting time after the welding is completed is 13s; in the step (4), the annealing temperature is controlled to be 346° C., and the return time is 2.5h.

Embodiment 3

[0026] Example 3: the rest are the same as Example 1, the difference is that in the step (2), the number of electric welding parts is 3; in the step (3), the control welding current is 187A, and the argon gas flow is 8L / min, the waiting time after the welding is completed is 14s; in the step (4), the annealing temperature is controlled to be 352° C., and the return time is 3h.

[0027] After the above process steps, take out the sample, to be tested:

[0028]

[0029] It can be seen from the above data that the assembled air-conditioning accumulator has good welding quality, no welding defects, and excellent sealing performance. All three samples are qualified, and the pass rate is 100%, which fully meets the requirements for use. Simple, highly maneuverable and efficient, saving the cost of the enterprise.

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Abstract

The invention discloses an assembly method for a small steel tube in an air conditioner liquid storage device, and relates to the technical field of air conditioner part assembly. The method includes the four technological processes of steel tube positioning, pre-fixing, final welding fixing and annealing treatment. The air conditioner liquid storage device assembled through the method is good in welding quality and free of welding defects. In the whole assembly process, the method is simple and easy to master, operation is convenient and fast, and efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of air-conditioning accessories assembly, in particular to an assembly method of a small steel pipe inside an air-conditioning accumulator. Background technique [0002] Existing conventional homes have accumulators for air conditioning systems, see attached figure 1 As shown, its structural composition is: a liquid outlet is provided at the bottom of the device body, which is welded with a copper tube after being mechanically fixed by glue, and the copper tube forms the refrigerant outflow channel of the accumulator, and the outflow channel is It is divided into two parts: straight and curved pipes, which are connected with the liquid outlet at the lower part of the body by welding. The straight copper tube is not easy to rust because it is inside the body of the device and it does not contact the external air. Therefore, the use of copper tubes in this part has no advantages over the use of iron tubes, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B43/00B23K28/02
CPCB23P15/00F25B43/00
Inventor 胡泽华
Owner WUHU SANHUA REFRIGERATION FITTINGS