Air conditioner indoor unit, outdoor unit and air conditioner

Abstract

The invention provides an air conditioner indoor unit, an outdoor unit and an air conditioner, relates to the technical field of air conditioners, and is invented for improving the uniformity of refrigerant distribution of a microchannel heat exchanger. The indoor unit of the air conditioner includes an indoor micro-channel heat exchanger, the indoor micro-channel heat exchanger includes a first header and a second header, and also includes a first gas-liquid separation device, the first gas-liquid separation device The liquid separation device includes a hollow first shell, the interior of the first shell is used for gas-liquid separation, and the first shell is provided with a liquid inlet pipe and an outlet pipe respectively connected with the inside of the first shell. A liquid pipe and an air outlet pipe, the liquid inlet pipe of the first gas-liquid separation device communicates with the supercooling device of the outdoor unit of the air conditioner, and the liquid outlet pipe of the first gas-liquid separation device is connected with the first header In communication, the outlet pipe of the first gas-liquid separation device communicates with the second header. The indoor unit of the air conditioner provided by the invention is used for the air conditioner.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to an indoor unit, an outdoor unit and an air conditioner. Background technique [0002] Usually, an air conditioner includes an indoor unit and an outdoor unit. The indoor unit includes an indoor heat exchanger. The outdoor unit includes an outdoor heat exchanger, compressor, capillary, four-way valve, filter and other components. The heater, compressor, capillary tube, four-way valve, filter and other components form a sealed circulation system, and the refrigeration or heating function is realized by the circulation of the refrigerant in the system. Among them, the heat exchanger, as an important part of heat exchange, is essential for the air conditioner to achieve cooling or heating. Compared with conventional heat exchangers, microchannel heat exchangers are small in size, high in heat exchange efficiency, and generally Aluminum material, the cost is low, therefore, ...

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Problems solved by technology

[0003] Existing microchannel heat exchangers generally include two headers located at both ends and multiple flow paths between the headers. After the refrigerant enters the headers, it is distributed to each flow path through the headers, but in general In the lower case, what enters the header is a mixed refrigerant of liquid refrigerant and gaseous refrigerant (that is, two-phase refrigerant). Due to the large differences in parameters such as the density and friction coefficient of the liquid refrigerant and gaseous refrigerant, the refrigerant in the microchannel heat exchanger is difficult to Evenly distributed to different flow paths, it is easy to cause refrigerant deviation, resulting in a decrease in the uniformity of heat transfer of the air conditioner, thereby affecting the performance of the air conditioner, and the existing technology is difficult to solve this problem

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