HEAT-PUMP WATER HEATER, AND CONTROL METHOD THEREFOR

A heat-pump water heater and a control method for the heat-pump water heater. The heat-pump water heater includes a water tank (3) and a controller. The water tank (3) is divided into a plurality of heating areas along a height direction of the water tank (3), and each of the heating areas is provid...

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Bibliographische Detailangaben
Hauptverfasser:	HUANG, Junji, HUANG, Juan, ZHANG, Xiaoqi, ZHAO, Runpeng, YU, Jinjian, DU, Shunxiang, CHEN, Bingquan
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING RANGES REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	A heat-pump water heater and a control method for the heat-pump water heater. The heat-pump water heater includes a water tank (3) and a controller. The water tank (3) is divided into a plurality of heating areas along a height direction of the water tank (3), and each of the heating areas is provided with a condenser (41), and every two adjacent condensers (41) are connected in series through a communicating pipe; each communicating pipe between every two adjacent condensers is provided with a secondary expansion valve (6), and the controller is in communication connection with the primary expansion valve (5) and the secondary expansion valve (6) to control an opening degree of the primary expansion valve (5) to be larger than that of the secondary expansion valve (6) in a rapid heating mode. Through the above configurations, in the rapid heating mode, a refrigerant is throttled to one or more heating areas of the plurality of heating areas to only heat water in the one or more heating areas, leading to a rapid heating speed to achieve rapid heating.