Air conditioner and low-temperature heating method thereof

Abstract

The invention provides an air conditioner and a low-temperature heating method thereof and belongs to the technical field of air conditioners. The problems that in the prior art, heating cannot be achieved in a low-temperature environment, or even though heating can be carried out, the energy efficiency is low, and operation is complex are solved. According to the low-temperature heating method ofthe air conditioner, the air conditioner comprises an enthalpy spraying economizer device arranged among a first heat exchanger, a throttling device and a gas supply opening in a compressor; the enthalpy spraying economizer device comprises an economizer, a first end opening in the economizer and a second end opening corresponding to the first end opening are connected with the first heat exchanger and the throttling device correspondingly, and a third end opening in the economizer is connected with a main refrigerant pipe connected between the first end opening on the economizer and the first heat exchanger through an auxiliary refrigerant pipe. The air conditioner and the low-temperature heating method thereof have the advantages that the control method is simple in logic, a solenoid valve and an electronic expansion valve in the enthalpy spraying economizer device are opened, and therefore the capacity of the air conditioner cannot be attenuated in the low-temperature environment of -20 DEG C or above.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to a low-temperature heating method for an air conditioner. Background technique [0002] With the continuous improvement of the world's industrialization level, carbon monoxide emissions continue to increase, and environmental pollution intensifies. In northern my country, coal is still used for heating, which further aggravates the deterioration of environmental pollution. The way of coal heating. At present, air conditioners are widely used as a heating equipment because they use electric energy as a clean energy source. However, the heating environment of existing ordinary air conditioners is generally effective at -7°C and above. The energy efficiency is relatively good, and the winter in northern my country is basically -10°C and below. Under such an ambient temperature, the air conditioner has very poor energy efficiency and high energy consumption, and bas...

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Problems solved by technology

[0002] With the continuous improvement of the world's industrialization level, carbon monoxide emissions are increasing, and environmental pollution is intensifying. In northern my country, coal is still used for heating, which further aggravates the deterioration of environmental pollution. It is urgent to replace the old energy in the north with clean energy. The way of coal heating. At present, air conditioners are widely used as a heating equipment because they use electric energy as a clean energy source. However, the heating environment of existing ordinary air conditioners is generally effective at -7°C and above. The energy efficiency is relatively good, and the winter in northern my country is basically -10°C and below. Under such an ambient temperature, the air conditioner has very poor energy efficiency and high energy consumption, and basically cannot operate below -20°C

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