Air conditioner and control method thereof

Abstract

The invention relates to an air conditioner and a control method of the air conditioner. The air conditioner comprises a compressor, a four-way valve, an indoor heat exchanger, an outdoor heat exchanger and a throttling part, which are connected by a pipeline to form a closed air conditioning system, and is characterized by also comprising a refrigerant heater, an exhaust gas temperature sensor, a temperature sensor of the indoor heat exchanger, an indoor ambient temperature sensor and an outdoor ambient temperature sensor, wherein the refrigerant heater is arranged on an exhaust pipe of the compressor or is arranged on a connection pipe of the indoor heat exchanger and the four-way valve, the exhaust gas temperature sensor is arranged at an outlet of the compressor, the temperature sensor of the indoor heat exchanger and the indoor ambient temperature sensor are respectively arranged on the indoor heat exchanger, and the outdoor ambient temperature sensor is arranged on the outdoor heat exchanger. The air conditioner has the advantages that when the outdoor ambient temperature is low, the heating capability of a system can be effectively improved, and the comfort level of a user during the low temperature heating is increased; and a pipeline of the system is not improved greatly, and the purposes of low temperature heating amount is achieved by a simple and reliable mode.

Description

technical field [0001] The invention provides an air conditioner and a control method thereof. Background technique [0002] At present, when the heat pump air conditioner operates at low temperature, especially when the outdoor ambient temperature is lower than 0°C, the heating capacity will be greatly attenuated as the temperature decreases, resulting in a decrease in the indoor temperature, which seriously affects the comfort of the room and the comfort of the user. use. Especially for the R290 refrigerant model, due to the limitation of the charging amount, it has an adverse effect on the heating capacity. At the same time, due to the flammability of the refrigerant, there is a safety hazard in installing electric heating on the indoor unit of the R290 refrigerant model. Therefore, its insufficient heating capacity at low temperature is even more obvious. Contents of the invention [0003] The object of the present invention is to provide an air conditioner with simp...

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Problems solved by technology

[0002] At present, when the heat pump air conditioner operates at low temperature, especially when the outdoor ambient temperature is lower than 0°C, the heating capacity will be greatly attenuated as the temperature decreases, resulting in a decrease in the indoor temperature, which seriously affects the comfort of the room and the comfort of the user. use

Especially for the R290 refrigerant model, due to the limitation of the charging amount, it has an adverse effect on the heating capacity. At the same time, due to the flammability of the refrigerant, there is a safety hazard in installing electric heating on the indoor unit of the R290 refrigerant model.

Therefore, its insufficient heating capacity at low temperature is more obvious

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