Air conditioner and controlling method therefor

Abstract

The invention relates to an air conditioner, comprising indoor unit and outdoor unit. Indoor heat exchanger and air supply apparatus are set in the indoor unit. Thereinto, there is at least a heating device in the indoor device and the heating device runs during defrosting of said air conditioner. The heating device is set at the upstream or downstream of indoor heat exchanger. The invention provides a control method of air conditioner. The method comprises defrosting of air conditioner when achieving the condition of defrosting and running of heating device at least when said air conditioner defrosts. The air conditioner and the control method of invention can shorten the defrosting time and make the indoor temperature not decrease. Furthermore, it can make the temperature in door improve quickly under the low temperature.

Description

technical field [0001] The invention relates to an air conditioner and a control method thereof, in particular to an air conditioner with a heating device installed in an indoor unit and a control method thereof. Background technique [0002] In the prior art, an air conditioner generally includes an indoor unit and an outdoor unit. The outdoor unit includes a compressor, an outdoor heat exchanger, and a throttling device, and the indoor unit includes an air supply device, an indoor heat exchanger, and a control device. For cooling and heating air conditioners, when the heating operation is performed, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor exchanges heat with the indoor air through the indoor heat exchanger, thereby increasing the indoor temperature. [0003] When the air conditioner is in heating operation, the surface temperature of the outdoor heat exchanger of the outdoor unit will drop, and the moisture in the air below...

AI Technical Summary

Problems solved by technology

However, due to the size limitation of the existing indoor heat exchanger and the limitation of the installation space of the duct machine, the heat exchanger of the indoor unit of the existing general air conditioner is relatively small, so when the air conditioner defrosts, the indoor side The low pressure is too low, which prolongs the defrosting time, reduces the indoor ambient temperature, and reduces the user's comfort

[0004] In addition, due to the size limitation of the existing indoor heat exchanger and the limitation of the installation space of the pipeline machine, the existing general indoor unit heat exchanger is relatively small, so the temperature of the room cannot be raised rapidly in a low temperature environment, so Reduces user comfort and further reduces air conditioner heating capacity as outdoor heat exchangers are more prone to frosting at low temperatures

Images