Microfine multi-channel heat pump type air-conditioner heat exchanger with automatic liquid distribution structure

Abstract

The invention relates to a microfine multi-channel heat pump type air-conditioner heat exchanger with an automatic liquid distribution structure, comprising an upper collecting pipe, a lower collecting pipe, a microfine channel aluminum strip pipe and a wavy rib. The heat exchanger adopts the wavy rib or the wavy rib with louver holes, and the connection of the microfine channel aluminum strip pipe with the upper collecting pipe and the lower collecting pipe adopts the automatic liquid distribution structure, thereby solving the problems that the heat exchange area is not fully utilized caused by the nonuniform flowing of refrigerating medium in each channel when the heat exchanger is used as an evaporator improving the efficiency of the heat exchange effect and the air conditioner, solving the problem that cooled liquid refrigerating medium is mixed with steam when the heat exchanger is used as a condenser, eliminating the problem of throttling failure and solving the problem that the refrigerating medium in the heat exchanger flows unstably under the off-design condition. The refrigerating medium in the heat exchanger realizes the automatic adjustment and stable running through reasonably arranging the combination mode of the connection of the upper collecting pipe and the lower collecting pipe with the microfine channel aluminum strip pipe. The heat exchanger has simple structure, low cost and good heat exchanger performance.

Description

technical field [0001] The invention relates to an air-cooled heat exchanger for air conditioners, in particular to a fine multi-channel aluminum strip tube type air conditioner heat exchanger, which belongs to the technical field of air conditioners. Background technique [0002] At present, heat exchangers for air conditioners are mainly finned tubes. The main pipe material is copper pipe. How to achieve energy saving under the premise of consuming less material cost and improving the energy efficiency of air conditioners; promoting my country's energy conservation awareness, saving material consumption and improving the market competitiveness of air conditioner production costs is becoming more and more prominent. In recent years, with the rapid development of micro-scale heat transfer technology, micro-multi-channel aluminum strip tube heat exchangers are gradually being promoted and applied in the automotive field. However, automotive air conditioners cannot be direct...

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Problems solved by technology

[0006] Aiming at the standard requirements for energy efficiency of air conditioners in various regions of today's society, the defects of the existing technology, and the development trend in the field of heat exchangers that replace copper with aluminum, the purpose of the present invention is to provide a micro-channel heat pump type air conditioner heat exchanger with a self-separating liquid structure In order to solve the problem of uneven distribution of gas-liquid two-phase refrigerant in each channel in the evaporator under different operating conditions, under the premise of stable operation, eliminate the invalid heat exchange area, realize a more compact heat exchanger, and achieve saving The purpose of the material solves the problems of defrosting and drainage in winter and summer

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