Air conditioner capable of controlling transfer of refrigerant and control method of air conditioner

Abstract

The invention discloses an air conditioner capable of controlling transfer of a refrigerant and a control method of the air conditioner and belongs to the field of air conditioners. In the air conditioner, a four-way reversing valve having a stop function is used; during start and shutdown of the air conditioner, the transfer of the refrigerant can be actively controlled during the start and shutdown of the air conditioner by controlling closing and opening of an electronic expansion valve, controlling start and stop of a compressor and controlling the switching of modes of the four-way reversing valve, so that the air discharging speed and the cooling speed when the air conditioner is started in a refrigeration mode can be effectively increased, and energy conservation is realized.

Description

technical field [0001] The invention belongs to the field of air conditioners, and in particular relates to an air conditioner with the function of controlling refrigerant migration and a control method. technical background [0002] After the current air conditioner is turned off in the cooling mode, the compressor stops working immediately, while the throttle valve keeps a certain opening, and the refrigerant will migrate from the condenser with higher pressure to the high-pressure In the lower evaporator, the refrigerant in the evaporator after shutdown is greater than the refrigerant in the evaporator when the air conditioner is running stably, and the refrigerant in the condenser is smaller than the refrigerant in the condenser when the air conditioner is running stably. After the next start-up, the compressor will migrate a large amount of refrigerant in the evaporator to the condenser. [0003] The refrigerant quality change process in the air conditioner is as follo...

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Problems solved by technology

[0006] The object of the present invention is to address the deficiencies in the prior art, to provide an air conditioner with the function of controlling the migration of refrigerant and its control method, so as to prevent the evaporator refrigerant established during stable operation in the cooling mode of the air conditioner from condensing The refrigerant distribution state with more refrigerant in the evaporator will return to the distribution state of the refrigerant with more refrigerant in the evaporator and less refrigerant in the condenser after the shutdown, to solve the large amount of energy in the existing air conditioner after startup The problem of waste and the slow reduction of the air outlet temperature of the indoor unit of the air conditioner can achieve the purpose of improving the cooling speed of the air outlet after the air conditioner is turned on and saving energy

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