Micro-channel heat exchanger and air conditioner

Abstract

The invention provides a micro-channel heat exchanger and an air conditioner. The micro-channel heat exchanger comprises heat exchange flat pipes (1), adapters (2), a first collecting pipe (3) and a second collecting pipe (4), wherein the first collecting pipe (3) is arranged at the first ends of the heat exchange flat pipes (1), the second collecting pipe (4) is arranged at the second ends of theheat exchange flat pipes (1), and the adapters (2) extend in the width direction of the heat exchange flat pipes (1); the adapters (2) are arranged at the first ends of the heat exchange flat pipes (1), and the first ends of the heat exchange flat pipes (1) are connected to the first collecting pipe (3) through the adapters (2); and/or the adapters (2) are arranged at the second ends of the heatexchange flat pipes (1), and the second ends of the heat exchange flat pipes (1) are connected to the second collecting pipe (4) through the adapters (2). According to the micro-channel heat exchanger, refrigerant flow distribution can be more uniform, and the heat exchange efficiency of the heat exchanger is improved.

Description

technical field [0001] The present application relates to the technical field of air conditioning, in particular to a microchannel heat exchanger and an air conditioner. Background technique [0002] In the prior art, the microchannel heat exchanger is composed of several flat tubes, fins connected between the flat tubes and two headers connected at both ends of the flat tubes. Due to its high heat transfer efficiency, compact structure, and cost advantages over ordinary copper-tube-fin heat exchangers, micro-channel flow heat exchangers have been widely used in household and commercial air conditioners as single-cooler condensers. [0003] However, the diameter of the inner hole of the traditional microchannel heat exchanger must be larger than the width of the flat tube to complete the assembly, which leads to a large internal space of the header, which will reduce the flow rate of the refrigerant in the header, and cause the heat exchanger to be used as an evaporator. Th...

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Problems solved by technology

[0003] However, the diameter of the inner hole of the traditional microchannel heat exchanger must be larger than the width of the flat tube to complete the assembly, which leads to a large internal space of the header, which will reduce the flow rate of the refrigerant in the header, and cause the heat exchanger to be used as an evaporator. Refrigerant gas-liquid stratification, uneven liquid separation when entering the flat tube, reducing the performance of the heat exchanger, while increasing the refrigerant charge

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