Systems and Methods for Heating Water Using Heat Pump Water Heaters Having Natural Convection Evaporator Heat Exchangers
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United States of America Patent
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Issued Date -
Jul 18, 2024
app pub date -
Jan 16, 2024
filing date -
Jan 17, 2023
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Abstract
A heat pump water heater is disclosed herein. The heat pump water heater includes an outer casing and a water tank disposed within the outer casing. The water tank includes a top wall, a bottom wall, and a side wall extending between and connected to the bottom wall and the top wall and has a hot water outlet and a cold water inlet configured to enable water to flow into and out of the water tank. Additionally, the water heater includes a condenser heat exchanger surrounding at least a portion of the side wall, an insulation jacket disposed around at least the side wall and the bottom wall of the water tank and the condenser heat exchanger, a natural convection evaporator disposed about the side wall and employing no fan to direct heating medium to the refrigerant, and a compressor and tubing connected to the condenser heat exchanger and the natural convection evaporator.
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