Air source heat pump unit

An air source heat pump and unit technology, applied in the field of heat pumps, can solve problems such as underutilization of low-grade waste heat of flue gas, complex pipelines of the system, etc., and achieve the effect of avoiding unstable or incapable heating and ensuring stability
CN112728810AActive Publication Date: 2021-04-30SHANGHAI AIRUTE AIR CONDITIONING SYST
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI AIRUTE AIR CONDITIONING SYST
Publication Date
2021-04-30

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Abstract

The invention belongs to the technical field of heat pumps, and provides an air source heat pump unit. The air source heat pump unit is provided with a gas engine, a transmission device, a compressor, a first throttling valve, a second throttling valve, a first heat exchanger, a second heat exchanger and a smoke heat exchanger, wherein a first switching valve is arranged between the second heat exchanger and an air suction port; a second switching valve is arranged between the second heat exchanger and an exhaust port; a third switching valve is arranged between the second heat exchanger and the smoke heat exchanger; when the first switching valve is opened, the second switching valve and the third switching valve are closed, and the unit is in a heating mode; when the first switching valve is closed, the second switching valve and the third switching valve are opened, and the unit is in a defrosting mode; and the modes are controlled to be switched through the first switching valve and the second switching valve, internal leakage of refrigerants is avoided, equipment pipelines are simpler, the gas resistance of the refrigerants is reduced, and the work efficiency of the unit is improved. The air source heat pump unit is simple in equipment pipeline and stable in heat supply, defrosting can be conducted while heat supply is conducted, energy consumption is reduced, and the service life of equipment is prolonged.
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Description

technical field

[0001] The invention belongs to the technical field of heat pumps, and in particular relates to an air source heat pump unit. Background technique

[0002] Currently widely used hot water boilers consume a lot of primary energy, have high operating costs, and generate a large amount of carbon emissions. Air source heat pumps driven by gas engines have the characteristics of high efficiency, low operating costs, and low carbon emissions. Therefore, it is an inevitable choice to replace gas-fired hot water boilers with high-efficiency gas engine-driven air source heat pumps. Engine-driven air source heat pumps have significant economic and environmental benefits. However, the air source heat pump also has some shortcomings. When the air source heat pump is operated in the outdoor low temperature and high humidity area, the moisture in the air below the dew point temperature will condense on the outer surface of the evaporator. If the temperature of the evapora...

Claims

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