an air conditioner

Abstract

The invention discloses an air conditioner, which comprises: a compressor for compressing and discharging refrigerant; an indoor heat exchanger for exchanging heat between the refrigerant and indoor air; a return air temperature sensor, The coil temperature sensor is used to detect the temperature of the return air of the compressor; the coil temperature sensor is used to detect the coil temperature of the indoor heat exchanger; Return air temperature; according to the coil temperature and the return air temperature, determine the temperature detection that triggers the anti-freeze mode of the air conditioner; wherein, the temperature detection includes coil temperature detection and return air temperature detection; according to the temperature detection that triggers the anti-freeze mode Calculate the anti-freezing value corresponding to the detection result; control the operating frequency of the compressor according to the anti-freezing value. The air conditioner disclosed in the present invention can separately trigger the anti-freezing mode by adopting coil temperature detection and return air temperature detection.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to an air conditioner which can separately trigger an anti-freezing mode by adopting coil temperature detection and return air temperature detection. Background technique [0002] At present, existing air conditioners generally have an anti-freezing function, which triggers the anti-freezing mode of the air conditioner by setting a sensor and according to the temperature of the inner panel detected by the sensor, so as to avoid damage to the air conditioner when it is running in a low temperature environment; specifically Ground, when the temperature of the inner panel of the air conditioner is 7°C, the frequency of the compressor is forbidden to increase; when the temperature of the inner panel is 5°C, the frequency of the compressor is slowly reduced; when the temperature of the inner When the temperature is 1°C, the compressor stops. [0003] However, there are still th...

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Problems solved by technology

[0003] However, there are still the following problems in the actual use of the air conditioner: when the outdoor temperature is low, when the air conditioner operates in cooling mode, due to the large degree of subcooling of the refrigerant before entering the evaporator, and after throttling The humidity of the refrigerant after flow is also high, so the evaporator will have uneven distribution, resulting in the reduction of refrigerant passing through the flow path where the inner disk is located, which makes the detected inner disk temperature not the actual minimum temperature of the evaporator

However, when the dual inner disk detection method is adopted, sensors need to be added, thus resulting in an increase in the hardware cost of the air conditioner

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