Air conditioner outdoor unit, air conditioning unit and refrigeration control method and heating control method thereof

Abstract

The invention discloses an air conditioner outdoor unit, an air conditioning unit and a refrigeration control method and a heating control method thereof. The air conditioner outdoor unit comprises an outdoor unit shell and a wind valve, wherein the wind valve covers an intake port of the outdoor unit shell. The air conditioner outdoor unit is provided with the wind valve for covering the intake port of the outdoor unit shell, so that the intake quantity of the outdoor unit shell can be adjusted through the wind valve, that is, the heat exchange quantity of an outdoor heat exchanger with external environment can be adjusted; and in particular, in low-temperature refrigeration and high-temperature heating of the air conditioning unit, the heat exchange quantity of the outdoor heat exchanger with the external environment is reduced, so that the low-temperature refrigeration operation stability and the high-temperature heating operation stability of the air conditioning unit are improved, and the service life of a compressor can be prolonged.

Description

technical field [0001] The present invention relates to the technical field of air conditioning, and more specifically, relates to an outdoor unit of an air conditioner, an air conditioner unit and a refrigeration control method and a heating control method thereof. Background technique [0002] At present, when the outdoor ambient temperature is high, the air conditioner unit is required to operate in cooling; when the outdoor ambient temperature is low, the air conditioner unit is required to operate in heating. In some specific occasions, such as machine rooms, forging workshops and other special occasions with large heat dissipation, the indoor ambient temperature is required to be kept at about 16-25°C. Due to the continuous heat dissipation of indoor equipment during operation, the indoor ambient temperature continues to rise. This requires the air conditioning unit to perform the cooling function when the outdoor ambient temperature is low. [0003] However, in the e...

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Problems solved by technology

[0003] However, in the existing air-conditioning units, in a low-temperature environment, the pressure of the high-temperature gas discharged from the compressor is low. When the evaporation temperature of the heat exchanger is lower than 0°C, the indoor heat exchanger will be frosted, and the indoor gas passing through the indoor heat exchanger will be reduced, resulting in the inability of the refrigerant to completely evaporate into a gas, so that the liquid refrigerant enters the compressor, and the low-temperature refrigeration The stability of the operation is poor, which also leads to a shorter service life of the air conditioning unit

[0004] In addition, the existing air-conditioning units operate for heating when the outdoor ambient temperature is higher than 25°C, and the exhaust pressure of the compressor will be high, resulting in overload operation of the air-conditioning units, poor stability of high-temperature heating operation, and even difficulty Achieve high temperature heating

[0005] In addition, in the existing air conditioner unit, when the heating operation is performed, the outdoor unit of the air conditioner emits cold energy to the external environment; when the air conditioner operates in cooling mode, the outdoor unit of the air conditioner emits heat to the external environment, no matter what mode the air conditioner unit operates in, there will be a corresponding energy loss, more energy wasted

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