Dual-energy gas heat pump air-conditioning system for refrigeration and heating and operating method thereof

Abstract

The invention discloses a dual-energy gas heat pump air-conditioning system for refrigeration and heating and an operating method thereof. The dual-energy gas heat pump air-conditioning system comprises a heat pump system and further comprises a vacuum boiler heat exchange device, a temperature sensor and a switching circuit, wherein the vacuum boiler heat exchange device is arranged outdoor, is connected between the compressor of the heat pump system and a first heat exchanger through pipelines and is positioned in the same circulating system together with other parts; the temperature sensor is arranged outdoor, and the output end of the temperature sensor is electrically connected with the input end of the switching circuit; and the switching circuit controls alternative starting and stopping of the vacuum boiler heat exchange device and the first heat exchanger according to temperature signals output by the temperature sensor. When outdoor temperature is reduced to be below the set temperature, the vacuum boiler device generates heat, so that the problems that for the common heat pump system, when the air temperature is low in winter, the outdoor machine is low in heat-absorbing efficiency from air, and frosting causes the system not to operate are solved thoroughly. The dual-energy gas heat pump air-conditioning system has the advantages that the efficiency is high, the heating effect is good, and the load of a power system is reduced when in a power-consumption peak.

Description

technical field [0001] The invention relates to a cooling and heating dual-purpose air-conditioning system, in particular to a cooling and heating system which uses a vacuum boiler heat exchange device for heating instead of the evaporator heating in an ordinary air-conditioning system (heat pump system) when heating at a low temperature. Hot dual energy gas heat pump air conditioning system. Background technique [0002] Existing air-conditioning equipment is generally also called a heat pump system, which uses a compressor to directly cool or heat with a refrigerant, such as an air-cooled unit, which uses the refrigerant to exchange heat with the outdoor air first, and then exchange heat with the indoor air. To achieve cooling or heating effect. Although the cooling effect of this type of air conditioner is good, the heating effect is poor when heating in winter, especially when the outdoor temperature is low, because frost is easy to form when the outdoor temperature is ...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of ordinary air conditioners in the prior art that the heating efficiency drops significantly at low temperatures and is prone to frosting, and provides a vacuum boiler that automatically switches to a gas-fired vacuum boiler when the outdoor air temperature is lower than a certain value. A dual-energy gas heat pump air-conditioning system that uses a vacuum boiler heat exchange device to replace the refrigeration and heating of an ordinary evaporator.

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