Air conditioner capable of automatically regulating condensation load and its control method

Abstract

The invention discloses an air conditioner that can automatically modify condensation load and the control method. Temperature control reference value is set on the controller in the air condition. The sensor in the air conditioner is the temperature sensor that the input end of the controller connects with it. The output end of the controller is connected to the outdoor fan electric machine and indoor fan electric machine of the air condition. The controller would control the air conditioner running in refrigeration mode according to the detecting signal of the sensor and the reference value. When in refrigeration mode, the controller would slow down the speed on the outdoor fan electric machine to achieve the heat exchange ability and avoid the indoor heat exchange frost. Thus, the temperature range that the refrigerating unit could run is expanded.

Description

technical field [0001] The invention belongs to the field of air conditioners, and relates to a domestic or commercial air conditioner or a similar refrigeration device and a refrigeration control method thereof, and more specifically relates to low-temperature refrigeration and low-temperature dehumidification technology in an outdoor low-temperature environment. Background technique [0002] Existing air conditioner refrigeration unit is made up of compressor, condenser, throttling part and evaporator. The electronic control system includes components such as controllers, sensors, control valves and fan motors. [0003] During refrigeration operation, the refrigeration device transfers heat from the indoor to the outdoor through the work of the compressor according to the principle of refrigeration. According to the national standard GB / T7725 room air conditioner, the rated working condition of the air conditioner cooling operation is that the outdoor temperature is 35°C,...

AI Technical Summary

Problems solved by technology

Therefore, at such a low evaporating temperature, the evaporator is often prone to frosting or even freezing, which will block the air volume circulation, fail to achieve the purpose of refrigeration, and even damage the refrigeration device in severe cases.

In other specific application environments, in a low temperature and low humidity environment (usually at a temperature of 10-15°C and a humidity of more than 90%), when dehumidification is required, due to the large condensation capacity, it often causes the indoor unit to freeze quickly. Frost also fails to achieve the purpose of dehumidification, which is also the main reason why household air conditioners cannot achieve low-temperature dehumidification

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