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Method for filling gap between heat-collecting plate and heat exchange pipe of heat exchanger of gas water heater

The technology of a gas water heater and a filling method, which is applied in the field of heat exchangers, can solve the problems of high cost and the like, and achieve the effects of simple and easy processing technology, cost reduction and high processing efficiency.

Inactive Publication Date: 2011-08-31
GUANGDONG MACRO GAS APPLIANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this connection structure is firmly connected and has high heat transfer efficiency, the cost remains high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This embodiment discloses a method for filling the gap between the heat collecting fins and the heat exchange tubes of the gas water heater heat exchanger. The method mainly includes the following steps:

[0024] a. Open holes on the heat collecting fins, fit and connect the heat exchange tubes and heat collecting fins, and then expand the heat exchanging tubes so that the heat exchanging tubes and the heat collecting fins are closely matched;

[0025] b. Soak the connected heat exchange tubes and heat collectors in the suspension with copper powder suspended;

[0026] c. Use ultrasonic vibration to suspend the liquid, so that the suspended copper powder penetrates into the gap between the heat exchange tube and the heat collector;

[0027] d. Take out the heat exchange tube and heat collector from the suspension;

[0028] e. Use the drying method to cure the residues on the surface of the heat exchange tubes and heat collectors.

Embodiment 2

[0030] Compared with Example 1, the method of connecting the heat exchange tubes and heat collecting fins in step a is replaced by the temperature difference method interference connection, the vibrating suspension in step c is replaced by mechanical vibration, and the drying method in step e Instead of curing the residue by natural drying, other steps and methods are exactly the same as in Example 1.

Embodiment 3

[0032] Compared with the first embodiment, this embodiment is completely consistent with the first embodiment except that the suspended matter in the suspension is a mixture of iron powder, aluminum powder, copper powder and powdered graphite.

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PUM

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Abstract

The invention discloses a method for filling a gap between a heat-collecting plate and a heat exchange pipe of a heat exchanger of a gas water heater, which mainly comprises the following steps: opening a hole on the heat-collecting plate, connecting the heat exchange pipe with the heat-collecting plate by close fit, placing the well connected heat exchange pipe and the heat-collecting plate in suspension for soaking, vibrating the suspension for leading suspended solids to be infiltrated into a seam at the junction of the heat exchange pipe and the heat-collecting plate, taking out the heat exchange pipe and the heat-collecting plate from the suspension, and solidifying residues on the surfaces of the heat exchange pipe and the heat-collecting plate. The method can not only realize the close and firm connection and improve the heat exchange efficiency, but also realize the simple processing technology and low cost.

Description

technical field [0001] The invention relates to the technical field of heat exchangers, in particular to a gap filling method between heat collecting fins and heat exchange tubes of a gas water heater heat exchanger. Background technique [0002] The heat exchanger is one of the key components of the gas water heater. Its main function is to transfer the heat of the gas combustion to the water and heat the cold water for the user. At present, most of the common heat exchangers are finned tube structures with heat exchange tubes and heat collectors. This structure has high heat exchange efficiency, but it has high requirements on materials and processing technology, especially for heat collectors and finned tubes. The connection has higher process requirements, mainly because there is a certain temperature difference between the heat collector and the heat exchange tube when the heat exchanger is working. In order to avoid the large deformation of the heat exchanger due to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/26
Inventor 余少言仇明贵胡定刚舒志新向熹
Owner GUANGDONG MACRO GAS APPLIANCE