Air-supplementing enthalpy-increasing type double-heat-source heat pump circulating system with ejector and working method
A technology of supplementing air to increase enthalpy and circulation system, which is applied in the field of heat pumps to achieve the effects of improving performance, reducing compression power consumption, and promoting development
Inactive Publication Date: 2020-11-10
XI AN JIAOTONG UNIV
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Problems solved by technology
In general, there is still a gap in the technical measures of applying ejectors and second heat source assistance in the heat pump cycle system of supplementary air enthalpy.
Method used
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[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0018] Such as figure 1 As shown, the present invention is a dual heat source heat pump cycle system with an ejector for supplementing air and increasing enthalpy, including a compressor 101 (including commonly used scroll compressors or scroll compressors) with the function of supplementing air and increasing enthalpy. Rotary compressor, etc.), has a suction port, an air supply port and an exhaust port. The compressor 101 is divided into two parts, a low-pressure stage and a high-pressure stage, from the suction port to the gas supply port. It is the low-pressure stage of the compressor 101. The air supply port to the exhaust port is the high-pressure stage of the compressor 101; the exhaust port of the compressor 101 is connected to the inlet of the condenser 102, and the outlet of the condenser 102 is divided into two paths, one of...
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The invention provides an air-supplementing enthalpy-increasing type double-heat-source heat pump circulating system with an ejector and a working method. The system comprises a compressor, wherein anexhaust port of the compressor is connected with an inlet of a condenser; an outlet of the condenser is divided into two paths; one path enters a flash tank through a primary expansion valve; refrigerant liquid from the flash tank enters an evaporator through a secondary expansion valve, and enters an air suction port of the compressor after heat-absorbing evaporation; the other path of high-pressure refrigerant liquid from the condenser enters a high-temperature heat source heat collector through an expansion regulating valve, and enters a primary fluid inlet of the ejector after heat-absorbing evaporation; refrigerant gas from the flash tank enters a secondary fluid inlet of the ejector; and an outlet of the ejector is connected with an air supplementing port of the compressor. The ejector is adopted to realize application upgrading on a high-temperature auxiliary heat source, and working capacity of the ejector is converted into ejection and pressure boosting on flash steam, so that compression power consumption, on the flash steam, of the compressor is reduced. The system can be adapted to changes of heat exchange amount of two heat sources by regulating opening degrees of three expansion valves.
Description
technical field [0001] The invention belongs to the technical field of heat pumps, and in particular relates to a gas-supplying enthalpy-increasing dual-heat-source heat pump circulation system and a working method for a heat pump device. Background technique [0002] As an energy-saving and environmentally friendly heating technology, vapor compression air source heat pump technology is increasingly being used in commercial buildings and residential heating, such as heat pump air conditioners and heat pump water heaters. With the development of the economy and the improvement of people's living standards, the development of air source heat pumps in my country is very rapid, and the research on related technologies is also constantly innovating. However, when the vapor compression air source heat pump works at a lower ambient temperature of the outdoor air, the pressure difference between the suction and discharge of the compressor increases, the density of the refrigerant s...
Claims
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IPC IPC(8): F25B30/02F25B9/08F25B27/00F25B31/00F25B41/06F25B49/02
CPCF25B9/08F25B27/00F25B30/02F25B31/00F25B49/02F25B2341/001
Inventor 鱼剑琳吕小龙刘晔
Owner XI AN JIAOTONG UNIV