Manufacture method of microchannel heat exchange body of heat exchanger

A manufacturing method and micro-channel technology, applied in the field of heat transfer and heat exchange, can solve the practicability of the manufacturing method of a micro-channel heat exchange body without a heat exchanger, no process and manufacturing parameters, no description of structural size characteristics, etc. problems, to achieve good heat exchange effect, good thermal conductivity, and the effect of meeting the requirements of processing technology

Active Publication Date: 2011-06-15
HANGZHOU SHENSHI ENERGY CONSERVATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the refrigerant channel and the fluid channel and the interlayer between the two are combined by atomic diffusion. However, since the specific structural size characteristics are not described, there is no clear performance index; there is no process for its specific structure. Process and fabrication parameters, practicability of microchannel heat exchanger fabrication methods without heat exchangers

Method used

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  • Manufacture method of microchannel heat exchange body of heat exchanger
  • Manufacture method of microchannel heat exchange body of heat exchanger
  • Manufacture method of microchannel heat exchange body of heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The structure of the microchannel heat exchange body of the heat exchanger of the present invention is as follows figure 1 As shown, several microchannel units are included, and the microchannel unit includes a refrigerant layer 11 microchannel, a working fluid layer 13 microchannel and a partition layer 12, and the refrigerant layer 11 microchannel and a working fluid layer 13 The microchannels are separated by the separator layer 12 and arranged at intervals, and the ratio of the hydraulic diameter of the microchannels in the refrigerant layer 11 to the hydraulic diameter of the microchannels in the working fluid layer 13 is 1:2.

[0038] The hydraulic diameter of the microchannels in the refrigerant layer 11 is 0.25mm.

[0039]The hydraulic diameter of the microchannels in the working fluid layer 11 is 0.5mm.

[0040] When the hydraulic diameter of the microchannel on the working fluid side is 0.5mm, its forced convection heat transfer coefficient is about 2 times ...

Embodiment 2

[0048] The structure of the microchannel heat exchanger of the heat exchanger in this embodiment is roughly the same as that described in Embodiment 1, the difference is that the cross section of each microchannel is circular, and the microchannel of the refrigerant layer 11 The hydraulic diameter of the channel is 0.0675mm. The hydraulic diameter of the microchannels in the working fluid layer 11 is 1.0125mm. The refrigerant layer 11, the partition layer 12, and the working fluid layer 13 are made of copper.

[0049] The method for manufacturing the microchannel heat exchange body of the heat exchanger comprises the following steps,

[0050] a. The refrigerant layer 11, the working fluid layer 13, and the partition layer 12 are formed into a circular cross-section through the original plate production, material cleaning, fitting of the protective layer, exposure, phenomenon, corrosion, peeling of the protective layer, and inspection. Shaped microchannel;

[0051] b. After ...

Embodiment 3

[0055] The structure of the microchannel heat exchange body of the heat exchanger of this embodiment is roughly the same as that described in Embodiment 1, the difference is that the cross section of each microchannel is elliptical, and the microchannel of the refrigerant layer 11 The hydraulic diameter of the channels is 0.5 mm. The hydraulic diameter of the microchannels in the working fluid layer 11 is 0.125mm. The refrigerant layer 11, the separator layer 12, and the working fluid layer 13 are made of aluminum.

[0056] The method for manufacturing the microchannel heat exchange body of the heat exchanger comprises the following steps,

[0057] a. The refrigerant layer 11, the working fluid layer 13, and the partition layer 12 are formed into an elliptical cross-section through the original plate production, material cleaning, fitting of the protective layer, exposure, phenomenon, corrosion, peeling of the protective layer, and inspection. Shaped microchannel,;

[0058]...

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Abstract

The invention discloses a manufacture method of a microchannel heat exchange body of a heat exchanger, belonging to the technical filed of heat transfer and heat exchange. The manufacture method comprises the following steps of: obtaining a set of optimized refrigeration media and a hydraulic diameter of a working fluid microchannel by calculation and analysis based on the use condition of a heatpump system, then respectively machining and forming the refrigeration media, the working fluid microchannel and a baffle plate layer, carrying out surface treatment, and separating and overlaying a refrigeration media layer from a working fluid microchannel layer through baffle plates to form a plurality of microchannel units; increasing both the temperature and the pressure after placing the overlaid microchannel units in a vacuum cavity to generate atomic diffusion on the surfaces of the refrigeration media layer, the working fluid microchannel layer and the baffle plate layer until atoms are combined into a whole with a homogeneous structure. The heat exchanger applying the manufacture method has higher heat exchange efficiency than the traditional products.

Description

technical field [0001] The invention belongs to the technical field of heat transfer and heat exchange, and in particular relates to a method for manufacturing a microchannel heat exchange body of a heat exchanger. Background technique [0002] The use of heat pump systems such as air source heat pumps, heat pump water heaters, heat pump boilers and ground source heat pumps is inseparable from heat exchangers. At present, there are several types of heat exchangers, such as tube heat exchangers, plate heat exchangers, and microchannel heat exchangers. Among them, the tubular heat exchanger has the disadvantages of large volume, many consumables, and low heat exchange efficiency; under the same heat exchange capacity, the plate heat exchanger can reduce the weight and volume by more than half compared with the tubular heat exchanger, but the plate heat exchanger The heat exchanger also has problems such as small forced convection heat transfer coefficient, increased flow resi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B39/00
Inventor 王凱建
Owner HANGZHOU SHENSHI ENERGY CONSERVATION TECH
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