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Heat exchanger with micro-channel, parallel-flow and all-aluminum flat pipe welding structure and application

A heat exchanger and micro-channel technology, applied in all-aluminum flat tube welded structure heat exchanger and application, micro-channel, parallel flow field, can solve the problems of large refrigerant flow resistance, large amount of refrigerant, easy corrosion, etc. Achieve the effect of compact product structure, high manufacturing reliability, and withstand voltage requirements

Inactive Publication Date: 2011-01-05
王磊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The heat exchange efficiency between the refrigerant in the refrigerant side and the inner wall of the copper tube is low, and the flow resistance of the refrigerant in the copper tube of the heat exchanger is large
[0004] 2. The warped fins on the air side have low heat transfer efficiency and large wind resistance
[0005] 3. The amount of refrigerant used is large, which does not meet environmental protection requirements
[0006] 4. There is a potential difference between the aluminum sheet and the copper tube, which is easy to corrode and has a short service life
[0007] 5. After the thickness of the whole heat exchanger, the weight is heavy and the logistics cost is very high
[0008] 6. The power of the fan and compressor is large, and the energy consumption is serious
[0011] At present, the above-mentioned heat exchangers made of extruded thin-walled aluminum profiles have not been found in rooms and similar applications where R12, R22, R410A, R407C, R123, HFC134A, etc. exchange heat through gas-liquid two-phase physical changes. Relevant reports on the application of air conditioning systems, refrigeration systems, refrigeration and dehumidification air conditioning systems, heat pump heating and water cooling / heating air conditioning systems, computer cooling modules in the IT industry, cooling systems in equipment, and other industries

Method used

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  • Heat exchanger with micro-channel, parallel-flow and all-aluminum flat pipe welding structure and application
  • Heat exchanger with micro-channel, parallel-flow and all-aluminum flat pipe welding structure and application
  • Heat exchanger with micro-channel, parallel-flow and all-aluminum flat pipe welding structure and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] The micro-channel, parallel-flow, all-aluminum flat-tube welded structure heat exchanger in this embodiment is a double-circuit single-row parallel-flow heat exchanger, which is used as a heat pump type indoor heat exchanger for heating. see Image 6 , the heat exchanger includes a first header 100, a second header 200 and several flat tubes 300 connected between the first header 100 and the second header 200, the flat tubes 300 are extruded from aluminum It is made of pressed thin-walled profiles, and the thickness of the flat tube 300 is 1.3mm-1.6mm.

[0112] In this embodiment, several flat tubes 300 are vertically spaced in a row in a parallel manner, the first header 100 is located at the top of the entire heat exchanger, the second header 200 is at the bottom of the entire heat exchanger, and the heat exchange medium The inlet port 400 is located at the left end of the first header 100 , and the outlet port 500 is located at the right end of the first header 100 ...

Embodiment 2

[0114] The micro-channel, parallel-flow, all-aluminum flat-tube welded structure heat exchanger in this embodiment is a double-circuit single-row parallel-flow heat exchanger, which is used as a heat pump type indoor heat exchanger for refrigeration. see Figure 7 , the structure is the same as that of Embodiment 1, except that the positions of the inlet end 400 and the outlet end 500 of the heat exchange medium are different. In this embodiment, the inlet end 400 of the heat exchange medium is located at the right end of the first header 100, and the outlet end 500 is located at the left end of the first header 100 .

[0115] The working principle of this embodiment is: the heat exchange medium, such as heating agent, enters from the inlet port 400 at the right end of the first header 100, and flows vertically downward through the flat tube of the second circuit 620 to the second header 200. The side on which the throttle orifice 700 is installed flows to the side of the sec...

Embodiment 3

[0117] The micro-channel, parallel flow, all-aluminum flat tube welded structure heat exchanger in this embodiment is a single-row parallel flow heat exchanger with three circuits, and its refrigerant flow direction is designed to be used as a heat pump type indoor heat exchanger for heating . see Figure 8 , the heat exchanger includes a first header 100, a second header 200 and several flat tubes 300 connected between the first header 100 and the second header 200, the flat tubes 300 are extruded from aluminum It is made of pressed thin-walled profiles, and the thickness of the flat tube 300 is 1.3mm-1.6mm.

[0118] In this embodiment, several flat tubes 300 are vertically spaced in a row in a parallel manner, the first header 100 is located at the top of the entire heat exchanger, the second header 200 is at the bottom of the entire heat exchanger, and the heat exchange medium The inlet port 400 is located at the left end of the first header 100, the outlet port 500 is lo...

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Abstract

The invention discloses a heat exchanger with a micro-channel, parallel-flow and all-aluminum flat pipe welding structure. The heat exchange part of the heat exchanger is formed by arranging flat pipes consisting of aluminum extruded thin-walled sections in parallel. Compared with the prior art, the heat exchanger with the micro-channel, parallel-flow and all-aluminum flat pipe welding structure has the advantages that: 1, the heat exchange efficiency of a refrigerant and the inner walls of the flat pipes is improved by 40 percent, and the flow resistance of the refrigerant in collecting pipes of the heat exchanger is reduced by 40 percent; 2, the heat exchange efficiency of fins on an air side is improved by 40 percent, and the wind resistance of the heat exchanger on the air side is reduced by 40 percent; 3, the heat exchange performance of the whole heat exchanger is improved by 40 percent; 4, compared with the prior art, the heat exchanger consumes 40 percent less refrigerant; and5, compared with the conventional copper-aluminum structure, the all-aluminum structure endows the heat exchanger with longer service life because of no copper-aluminum potential differences. The heat exchanger adopting the flat pipes has the characteristics of capability of bearing the conventional limitation of high-pressure resistance value of the refrigerant, compact product structure, light unit weight, short process flow, high manufacturing reliability and relatively lower cost. The invention also discloses the application of the heat exchanger.

Description

technical field [0001] The invention relates to a heat exchanger and its application, in particular to a microchannel, parallel flow, all-aluminum flat tube welded structure heat exchanger and its application. All the main materials of this new series of heat exchangers are made of aluminum: it is a material that is easy to recycle and has higher corrosion resistance than copper tube aluminum sheet heat exchangers; in addition, microchannel flat tubes The design improves the efficiency of the refrigerant side of the heat exchanger, and the parallel flow structure + advanced fin design greatly improves the efficiency of the air side of the heat exchanger, thereby greatly improving the overall heat exchanger efficiency. This new series of heat exchangers has the advantages of environmental protection, less refrigerant consumption, pressure resistance, high reliability, low recycling cost, no potential difference and no primary battery effect, etc. Background technique [0002...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D1/04F28F1/02F25B39/04F25B39/02F28F9/24F28F1/12F28F3/00F28F3/02
CPCF28F1/025F28D1/0478F28F2260/02F28F21/084F28F1/022F28D1/05391F28D2001/0273F28F21/088
Inventor 王磊
Owner 王磊
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