Device for producing high-temperature hot water through air source heat pump at low temperature

Abstract

The invention discloses a device for producing high-temperature hot water through an air source heat pump at a low temperature. The device comprises the air source heat pump, a water source heat pump, a heat exchange water tank and a circulation water pump. The air source heat pump comprises a first compressor, a first plate type condenser, an economizer, an auxiliary route electronic expansion valve, a gas supplementation electromagnetic valve, a liquid storage device, a filter, a main route electronic expansion valve, an air cooling type evaporator and a steam-liquid separator. The water source heat pump comprises a second compressor, a second plate type condenser, a drying filter, a liquid route electromagnetic valve, a thermal expansion valve and a plate type evaporator. According to the device, medium-temperature hot water (20-30 DEG C) is provided for the water source heat pump through the air source heat pump in the low-temperature environment (-15 DEG C) to be used as a water source; after the water is heated through a high-temperature water source heat pump unit, a hot water side provides high-temperature hot water with the temperature being 70 DEG C or above for users; and the high-temperature hot water is provided in the low-temperature environment.

Description

technical field [0001] The invention relates to the field of heat pump hot water equipment, in particular to equipment for producing high temperature hot water by a low temperature air source heat pump. Background technique [0002] At present, heat pump hot water equipment has been widely used to replace coal and electricity, for households and business places that need hot water such as life heating and bathing, and its function is to prepare hot water for heating and bathrooms. The ambient temperature required by general heat pump water heating equipment is generally above +5°C or there are other heat sources (such as water source, waste heat recovery). 45°C), it is better to use in the southern region. In the northern part of my country, the temperature is cold in winter and the ambient temperature (-15°C) is low, and some industrial equipment needs high-temperature hot water (above 70°C). When the ambient temperature is close to 0°C or the evaporation temperature is ve...

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Problems solved by technology

In the northern part of my country, the temperature is cold in winter and the ambient temperature (-15°C) is low, and some industrial equipment needs high-temperature hot water (above 70°C). When the ambient temperature is close to 0°C or the evaporation temperature is very low, the requirements for producing high-temperature hot water cannot be met

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