Heat pump water heater

Abstract

The invention relates to a heat pump water heater. Specifically, the heat pump water heating device of the present invention includes: a heating chamber configured to have a predetermined vacuum degree and used to accommodate a heat transfer medium, so that the heat transfer medium is in a low-pressure environment whose air pressure is lower than standard atmospheric pressure; the first heat exchange device , located in the heating chamber and above the highest heat transfer medium liquid level in the heating chamber, configured to accommodate heated water; and a heat pump circulation system configured to heat the heat transfer medium in the lower part of the heating chamber to boiling under a low pressure environment, so that The heat transfer medium vaporizes and rises to form a gaseous heat transfer medium. At least part of the gaseous heat transfer medium heats the heated water. In the heat pump water heater device of the present invention, because the heat transfer medium is in a low-pressure environment, the heat transfer medium can be vaporized at a lower temperature. It turns into a gaseous heat transfer medium, and uses the latent heat and sensible heat of the gaseous heat transfer medium to heat the heated water, which significantly improves the heating energy efficiency ratio of the heat pump water heater and achieves the purpose of saving energy.

Description

technical field [0001] The invention relates to the field of heat pumps, in particular to a heat pump water heater. Background technique [0002] The existing heat pump water heating device may include: a compressor with an exhaust port and a return air port; a hot water heat exchanger, also known as a condenser, which communicates with the exhaust port; an evaporator , the evaporator communicates with the air return port; the throttling piece, which can also be called a throttling device, is set between the hot water heat exchanger and the evaporator and communicates with the hot water heat exchanger and the evaporator. When the heat pump water heating device is running, the high-temperature and high-pressure working fluid discharged from the compressor flows through the condenser to exchange heat, and after the pressure reduction and throttling of the throttling parts (such as capillary tubes), it exchanges heat with the evaporator and returns to the compressor. , so the ...

AI Technical Summary

Problems solved by technology

The existing air source heat pump water heating device directly heats the water, the heating speed is slow, the flow rate of the generated hot water is small, and the energy consumption is relatively large

Images