Control method for low-temperature refrigerating of air conditioner

Abstract

The invention relates to a control method for low-temperature refrigerating of an air conditioner. The control method comprises the following steps that 1, a controllable silicon module is additionally arranged in a controller of the air conditioner, a temperature sensor is arranged in the middle of a heat exchanger of an outdoor unit, the temperature sensor and the controller are electrically connected, and the controllable silicon module and an outdoor unit fan are electrically connected; and 2, according to the real-time temperature detected by the temperature sensor, the controllable silicon breakover ratio in the controllable silicon module is adjusted by the controller, thus the purpose of controlling the rotating speed of the outdoor unit fan is achieved by adjusting the input voltage of the outdoor unit fan so as to adjust the condensation pressure of an air conditioner system, and the air conditioner can normally conduct refrigeration under the low-temperature environment accordingly. The control method for low-temperature refrigerating of the air conditioner has the advantages that the air conditioner can normally conduct refrigeration under the low-temperature environment.

Description

technical field [0001] The invention relates to an air conditioner, in particular to a control method of a low temperature refrigeration air conditioner. Background technique [0002] Among the existing air-conditioning products, the refrigerating ambient temperature of ordinary air-conditioning is generally 10-43 °C. This operating environment can only be applied to families and ordinary workplaces, but some special places, such as computer rooms, forging workshops, communication base stations, bars, dance halls, etc. are closed In a space with a large amount of heat, when the outdoor temperature is low, the indoor temperature is still high. At this time, the air conditioner needs to be cooled in a low temperature environment. However, under the low temperature environment of the existing ordinary air conditioners, the compressor discharge pressure is low. After throttling, the refrigerant evaporation pressure is lower, and the evaporation temperature is much lower than 0 °...

AI Technical Summary

Problems solved by technology

However, in the low temperature environment of the existing ordinary air conditioners, the exhaust pressure of the compressor is low, and the evaporation pressure of the refrigerant is lower after throttling, and the evaporation temperature is much lower than 0°C, which leads to frosting on the evaporator, which not only leads to frequent anti-freezing of the air conditioner protection, normal refrigeration cannot be performed, and the incompletely evaporated liquid refrigerant enters the compressor after frosting, causing the compressor to perform liquid compression, which will eventually cause the compressor to be damaged too quickly

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