Method and device for controlling heating and high temperature prevention of air conditioner system and air conditioner

Abstract

The invention discloses a method and device for controlling heating and high temperature prevention of an air conditioner system and an air conditioner. The method comprises the steps that a set wind gear of the air conditioner under a heating mode is obtained; the inner tube temperature of the air conditioner is obtained; whether the set wind gear is a low wind gear is judged; under the condition that the set wind gear is the low wind gear, if the inner tube temperature is lower than a first preset temperature, an inner draught fan of the air conditioner is controlled to operate at the lower wind gear; if the inner tube temperature is higher than or equal to a second preset temperature, the inner draught fan is controlled to operate at a high wind gear, and the first preset temperature is lower than the second preset temperature; if the inner tube temperature is higher than or equal to the first preset temperature and lower than the second preset temperature, the inner draught fan is controlled to operate at a middle wind gear. By means of the method and device, the wind gears can be prevented from being shifted frequently, the wind capacity can be prevented from acute change, the detection temperature of a thermal bulb can be prevented from deviating from practical inner tube temperature substantially on account of acute change of the practical inner tube temperature, the high temperature prevention can be prevented from losing efficacy, and therefore the problems of high discharge pressure and compressor overload of a machine set are avoided.

Description

technical field [0001] The invention relates to the field of air conditioning, in particular to an air conditioning system and a method and device for controlling heating and high temperature protection of the air conditioner. Background technique [0002] At present, most of the heat pump air conditioners on the market have anti-high temperature control, that is, when the pipe temperature of the internal unit reaches a certain set value, it will enter the anti-high temperature mode. At this time, the unit will take certain anti-high temperature protection measures, such as: stop the external fan, Convert the windshield of the internal and external fans, etc. The function of anti-high temperature is to prevent the exhaust pressure of the unit from being too high, the exhaust temperature from being too high, and the compressor from being overloaded, which will affect the reliable operation of the unit. Some heat pump air conditioners are limited by their own conditions, and ...

AI Technical Summary

Problems solved by technology

[0006] The severe fluctuation of the actual inner pipe temperature is likely to cause the following two problems: firstly, the temperature detected by the temperature sensing package deviates greatly from the actual pipe temperature, the anti-high temperature control is prone to failure, and the unit is prone to high exhaust pressure and compressor overload protection; The unit frequently enters and exits to prevent high temperature, and the wind gear is frequently switched between low and high gears, resulting in large fluctuations in air volume and bad experience for users

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