Double-heat source heat pump water heater with air source and water source

Abstract

The invention discloses an air-water dual heat source heat pump water heater, which comprises a main machine, a heat-storage and preservation water tank, a controller, an environment temperature controller, a coil temperature sensor, a water tank temperature sensor, a high-water-level switch, a low-water-level switch, a target-flow switch, a water inflow electromagnetic valve, a circulating water pump, a compressor, a motor, an electronic expansion valve, a double-pipe evaporator circuit electromagnetic valve, a fin tube evaporator circuit electromagnetic valve, a circulating hot water pipe, a tube-in-tube condenser and a four-way valve, wherein the D port of the four-way valve is connected with the exhaust pipe of the compressor through a high-pressure switch, the C port of the four-way valve is connected with the upper part of a tube-in-tube condenser, the S port of the four-way valve is connected with the air intake of the compressor through a vapor liquid separator and a low-pressure switch, the E port of the four-way valve is connected with the upper part of a double-pipe evaporator and the upper part of a fin tube evaporator, and the tube-in-tube condenser forms a water cooled heat exchanger through a liquid container, a filter, the electronic expansion valve, an axial flow fan blade, a motor and the double-tube evaporator and forms a wind cooled heat exchanger through a fin tube evaporator. The water heater can be used for 24 hours each day all the year around in the north of China.

Description

technical field [0001] The invention relates to a heat pump water heater, in particular to a heat pump water heater with dual heat sources of air source and water source. technical background [0002] At present, there are two types of heat pump water heaters generally sold in the heat pump water heater market in my country: air source heat pump water heaters and water source heat pump water heaters. Under normal climates, the ambient temperature is much higher than the water temperature, and the power consumed to produce hot water at the same temperature is much lower than that of water source heat pump water heaters. In the northern part of my country, the ambient temperature in the cold winter season is around -15°C, while the water temperature is generally kept above 10°C, and the northern winter generally lasts for 4 months. Heat pump water heaters are much higher. Although in the three seasons of spring, summer and autumn, air source heat pump water heaters can still ...

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But it only uses air source

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