Ultralow-temperature overlapped triple generation heat pump unit

Abstract

The invention provides an ultralow-temperature overlapped triple generation heat pump unit.The ultralow-temperature overlapped triple generation heat pump unit is characterized in that a low-temperature heat pump system, a high-temperature heat pump system, a hot water producing device and a control center are included; the hot water producing device comprises a hot water producing heat exchanger, a circulating water pump is arranged at the cold water inlet end of the hot water heat exchanger, and an evaporation condenser is connected with a high-temperature throttling device through a high-temperature heat exchanger switching solenoid valve; the output end of a high-temperature part compressor is connected with the heat medium input end of the hot water producing heat exchanger, the heat medium output end of the hot water producing heat exchanger is connected with a high-temperature part four-way valve, and the high-temperature part four-way valve is controlled to control the output end of the high-temperature part compressor to be selectively communicated with a high-temperature part air cooling heat exchanger or a high-temperature part water side heat exchanger.The needs for air conditioner refrigeration and heating and domestic hot water can be met at the same time, an overlapped system is not started during refrigeration, single-stage compression is adopted for refrigeration, the system is simpler and better in energy saving effect, the overlapped system is adopted in the low-temperature heating process, and the heating energy efficiency is higher.

Description

technical field

[0001] The invention relates to the field of cooling and heating equipment, in particular to an ultra-low temperature cascade triple heat pump unit. Background technique

[0002] At present, my country's ordinary air source heat pump cold and hot water air conditioning units and air source heat pump water heater units are basically two independent devices, which are composed of compressors, heat exchangers, throttles, heat absorbers, compressors A circulatory system composed of other devices. The refrigerant circulates in the system under the action of the compressor. It completes the process of boosting the pressure and temperature of the gaseous state in the compressor, and the temperature is as high as 100°C. After entering the heat exchanger, it exchanges heat with the wind, is cooled and converted into a liquid state, and when it runs to the heat absorber, the liquid state quickly absorbs The thermal evaporation is converted into a gaseous state again, ...

Examples

Embodiment Construction

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0017] figure 1 It is a system block diagram of an ultra-low temperature cascade triple heat pump unit. The heat pump unit includes high-temperature part air-cooled heat exchanger 1, air-cooled heat exchanger fan 2, low-temperature part compressor 3, low-temperature part evaporator 4, low-temperature part gas-liquid separator 5, defrosting solenoid valve 6, low-temperature part throttling Device 7, low temperature liquid storage tank 8, evaporative condenser 9, hi...

technical field

[0001] The invention relates to the field of cooling and heating equipment, in particular to an ultra-low temperature cascade triple heat pump unit. Background technique

[0002] At present, my country's ordinary air source heat pump cold and hot water air conditioning units and air source heat pump water heater units are basically two independent devices, which are composed of compressors, heat exchangers, throttles, heat absorbers, compressors A circulatory system composed of other devices. The refrigerant circulates in the system under the action of the compressor. It completes the process of boosting the pressure and temperature of the gaseous state in the compressor, and the temperature is as high as 100°C. After entering the heat exchanger, it exchanges heat with the wind, is cooled and converted into a liquid state, and when it runs to the heat absorber, the liquid state quickly absorbs The thermal evaporation is converted into a gaseous state again, ...

Examples

Embodiment Construction

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0017] figure 1 It is a system block diagram of an ultra-low temperature cascade triple heat pump unit. The heat pump unit includes high-temperature part air-cooled heat exchanger 1, air-cooled heat exchanger fan 2, low-temperature part compressor 3, low-temperature part evaporator 4, low-temperature part gas-liquid separator 5, defrosting solenoid valve 6, low-temperature part throttling Device 7, low temperature liquid storage tank 8, evaporative condenser 9, hi...

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