Scanning defrosting air source gas heat pump
A technology of gas heat pump and air source, which is applied in the field of air conditioning technology and energy saving, which can solve problems such as shutdown and achieve the effect of no loss of energy consumption in defrosting
Inactive Publication Date: 2018-01-09
祝南平
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Problems solved by technology
[0004] The purpose of the present invention is to solve the above-mentioned problem that the existing air-source gas heat pump needs to be shut down frequently for defrosting when it works in winter, and to design a simple and reasonable structure that can defrost without shutting down and work normally under low temperature conditions. The scanning defrosting air source gas heat pump directly uses the high-temperature flue gas discharged from the gas engine to partially defrost the frosted heat transfer surface of the outdoor heat exchanger in turn.
Method used
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[0016] See attached figure 1 , the scanning defrosting air source gas heat pump of the present invention includes a gas engine 1, a freon compressor 2, a four-way valve 3, an indoor heat exchanger 4, a throttle valve 6 and an outdoor heat exchanger 7, and also includes flue gas The three-way valve 14 and the flue gas scanning defrosting device, the flue gas scanning defrosting device is a small area that can circulate and move along the windward side of the outdoor heat exchanger to spray smoke to the frosted heat transfer surface of the outdoor heat exchanger The gas device, the input end of the flue gas three-way valve 14 is connected to the exhaust port of the gas engine 1, and an output end of the flue gas three-way valve 14 is connected to the intake end of the flue gas scanning defrosting device through the flue gas pipe. The other output end of the flue gas three-way valve 14 is discharged outside through the flue gas pipe or discharged outside through the heat exchange...
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The invention discloses a scanning defrosting air source gas heat pump. The scanning defrosting air source gas heat pump comprises a gas engine, a Freon compressor, a four-way valve, an indoor heat exchanger, a throttling valve and an outdoor heat exchanger, and is characterized by further comprising a smoke three-way valve and a smoke scanning defrosting device; the smoke scanning defrosting device is a device with smaller area and capable of circularly moving along a windward surface of the outdoor heat exchanger to spray smoke to a frosted heat transfer surface of the outdoor heat exchanger; an input end of the smoke three-way valve is connected with a smoke discharge port of the gas engine; and an output end of the smoke three-way valve is connected with an intake end of the smoke scanning defrosting device by a smoke pipe. The local circular scanning quick defrosting is performed on the outdoor heat exchanger by using high-temperature smoke discharged by the gas engine, so that the air source gas heat pump can defrost for normal work under low-temperature or ultralow-temperature condition without stopping, and is free of defrosting energy consumption. The scanning defrosting air source gas heat pump is an upgraded product of a traditional air source gas heat pump.
Description
technical field [0001] The invention relates to an air source gas heat pump driven by a natural gas engine, in particular to a scanning defrosting air source gas heat pump, which belongs to the field of air conditioning technology and energy saving. Background technique [0002] The existing air source gas heat pump is mainly composed of a gas engine, a freon compressor, a four-way valve, an indoor heat exchanger, a throttle valve and an outdoor heat exchanger. The gas engine uses natural gas as energy to drive the freon compressor to work ( It is also possible to drive the generator to work first, and then use the electricity generated by the generator to drive the Freon compressor to work), the exhaust port of the gas engine is discharged to the outside through the exhaust pipe, when the four-way valve is in the indoor heating position, the Freon compressor The output end of the outdoor heat exchanger is connected to the outdoor heat exchanger through the four-way valve, t...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F25B27/02F25B30/02F25B47/02
CPCY02A30/274
Inventor 祝南平
Owner 祝南平