A kind of air conditioner and its low temperature heating method

Abstract

The invention provides an air conditioner and a low-temperature heating method thereof, belonging to the technical field of air conditioners. It solves the problems of the prior art that heating cannot be performed in a low-temperature environment, or that even though heating can be performed, the energy efficiency is low and the operation is complicated. The low-temperature heating method of the air conditioner, the air conditioner here includes an enthalpy injection economizer device arranged between the first heat exchanger, the throttling device and the air supply port on the compressor, the enthalpy injection economizer device includes an economizer, an economical The first port on the economizer and the corresponding second port are respectively connected to the first heat exchanger and the throttling device, and the third port on the economizer is connected to the first port and the first port on the economizer through an auxiliary refrigerant pipe. The main refrigerant pipe connection between the first heat exchanger, etc. The advantages of the air conditioner and its low-temperature heating method are: the logic of the control method is simple, and the air conditioner can be operated at a low temperature of -20°C or above by opening the solenoid valve and the electronic expansion valve in the enthalpy injection economizer device. Ability does not decay.

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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