Method and device for regulating rotating speed of outdoor fan

Abstract

The embodiment of the invention provides a method and device for regulating the rotating speed of an outdoor fan, and relates to the technical field of air conditioners. The method and device are used for regulating the rotating speed of the outdoor fan in time to stabilize condensation pressure under the condition of low-temperature refrigeration of an air conditioner, so that the air conditioner is in a stable state. The method comprises the steps that whether the air conditioner is in a low-temperature refrigeration mode or not is determined; if it is determined that the air conditioner is in the low-temperature refrigeration mode, whether the temperature of an outdoor coil pipe is larger than first preset temperature and smaller than second preset temperature or not is detected; if the temperature of the outdoor coil pipe is larger than the first preset temperature and smaller than the second preset temperature, the current rotating speed of the outdoor fan is kept; if the temperature of the outdoor coil pipe is smaller than the first preset temperature, the current rotating speed of the outdoor fan is reduced to first rotating speed, and the first rotating speed is higher than or equal to the first preset rotating speed; and if the temperature of the outdoor coil pipe is larger than the second preset temperature, the current rotating speed of the outdoor fan is increased to the second rotating speed, and the second rotating speed is lower than or equal to the second preset rotating speed.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a method and a device for adjusting the rotational speed of an outdoor fan. Background technique [0002] With the continuous improvement of people's living standards, air conditioners have become one of the essential cooling or heating equipment. Usually, the air conditioner only cools when the external environment temperature is high. However, for places such as communication base stations, since the equipment is uniformly installed in a closed room, in winter, due to the continuous operation of a large number of equipment, the heat generated by the equipment is large. The temperature of the room will rise accordingly, and the stability of the equipment will gradually decrease with the increase of the ambient temperature. This requires cooling and cooling of the equipment room when the outdoor ambient temperature is low. ambient cooling. [0003] At present, under lo...

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Problems solved by technology

[0003] At present, under low-temperature refrigeration conditions, the method of frequently turning on and off the outdoor fan is generally used to adjust the change of the speed of the outdoor fan to meet the needs of the air conditioner for cooling in a low-temperature environment. However, the above method makes the pressure of the air conditioner suddenly High and low, unable to achieve a stable condensing pressure, making the cooling effect poor. At this time, the air conditioner has been running in an unstable state, and the reliability is greatly reduced.

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