Heat pump water heater and control method thereof
A heat pump water heater, hot water technology, applied in the directions of fluid heaters, lighting and heating equipment, etc., can solve the problems of low heating efficiency and heat waste, and achieve the effect of improving efficiency, improving overall energy efficiency, and improving energy utilization rate
Active Publication Date: 2019-03-12
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
Therefore, in order to ensure the sterilization effect, the existing product scheme must raise the temperature of the outlet water to above 60°C, and the heat absorbed by the hot water in the water tank in the temperature range from 55°C to above 60°C is taken from the low-temperature heat source, which not only leads to heating The efficiency is low, and because the hot water in the water tank needs to be heated as a whole, but the actual amount of hot water may only be part of it, so it also leads to some waste of heat
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[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.
[0022] see figure 1 As shown, according to the first embodiment of the present invention, the heat pump water heater includes a static heating system 9 and an instant thermal sterilization system 10. The static heating system 9 initially heats the water body so that the temperature of the water body can reach a certain temperature and form preliminary heated hot water; The instant sterilizing system 10 receives the hot water initially heated by the static heating system 9 , performs secondary heat sterilization on the hot water entering the instant sterilizing system 10 , and cools down the sterilized hot water so that users can take it.
[0023] If the heat pump water heater of this embodiment is used, when hot water is not used, the hot water can be preliminarily heated by the static...
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The invention discloses a heat pump water heater and a control method thereof. The heat pump water heater comprises a static heating system (9) for preliminarily heating a water body, and an instantaneous heat sterilizing system (10) which is used for receiving hot water heated preliminarily by the static heating system (9), performing secondary heating on the hot water entering the instantaneous heat sterilizing system (10) for sterilizing, and then lowering the temperature of the sterilized hot water. According to the heat pump water heater disclosed by the invention, the sterilizing effect of the hot water can be ensured, and the scalding risk of the outlet water with high water temperature can be reduced.
Description
technical field [0001] The invention relates to the technical field of refrigeration and air-conditioning equipment, in particular to a heat pump water heater and a control method thereof. Background technique [0002] At present, the two national standards of "Heat Pump Water Heaters for Household and Similar Purposes" and "Heat Pump Water Heaters for Commercial or Industrial Use and Similar Purposes" promulgated by our country both regulate the nominal outlet water temperature of heat pump water heater products at 55°C. However, in Japan, this The value is 65°C, and the outlet temperature of hot water in developed countries such as Europe and the United States is basically higher than 60°C. [0003] From the perspective of energy saving, the lower the domestic hot water supply temperature is, the more beneficial it is for energy saving: first, the energy efficiency of the heat pump hot water machine increases with the decrease of the outlet water temperature; temperature ...
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IPC IPC(8): F24H4/02F24H9/20
Inventor 罗宝军
Owner GREE ELECTRIC APPLIANCES INC