Air conditioning apparatus

Abstract

In the refrigerating circuit of conventional air conditioners, problems with the compressor caused by strong acids such as organic acids and inorganic acids remaining in the original piping, or a large amount of wear powder and deterioration of the refrigerating machine oil caused problems in the refrigerating circuit The coarse filter installed in the air conditioner is clogged, so the original piping is cleaned by a washing machine to remove foreign matter, and then the work of installing a new air conditioner is carried out. There is a problem that it takes time and load until the work is completed, and the work cost is also high. In the air conditioner of the present invention, a plurality of strainers are arranged in the refrigerant circuit, and a compressor, a four-way valve, a condenser, a first electronic expansion valve, a liquid storage mechanism, a second electronic expansion valve, liquid piping, The evaporator, gas piping, and four-way valve constitute a refrigeration loop, and a dry filter for foreign matter capture is arranged between the above-mentioned second electronic expansion valve and the liquid piping to capture compressed air remaining in the original piping. Foreign matter such as machine wear powder and oil deterioration.

Description

technical field [0001] The present invention relates to an air conditioner which can be installed without cleaning the existing piping even when a large amount of foreign matter such as compressor wear powder, oil deterioration, and strong acid remains in the internal and external connecting piping of the air conditioner. Background technique [0002] The refrigeration circuit of the first air conditioner in the past has a compressor, a four-way valve, a condenser, a first electronic expansion valve, a liquid storage mechanism, a second electronic expansion valve, liquid piping, an evaporator, a gas piping, and a low-pressure The side heat exchanger constitutes a refrigerant circuit, and a plurality of strainers are installed in the circuit. The strainers are usually 30 to 100 mesh in order to protect the distribution capillary of the condenser and evaporator and protect the electronic expansion valve. [0003] If there is no history of compressor failure and the outdoor uni...

AI Technical Summary

Problems solved by technology

[0007] In the refrigerating circuit of conventional air conditioners, problems with the compressor caused by strong acids such as organic acids and inorganic acids remaining in the original piping, or a large amount of foreign matter such as wear powder and refrigerating machine oil were left in the refrigerating circuit The installed coarse filter is clogged. Therefore, when the compressor fails, the original piping is cleaned with a cleaning agent such as R22 with a dedicated cleaning machine to remove foreign matter, and then a new air conditioner is installed. However, when the compressor fails , even in the installed state where the older indoor and outdoor units are easy to disassemble, it takes about 3 hours of time and load before the work is completed, and there is a problem that the work cost is high

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