Heat pump water heater and operating method thereof
US8839636B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2009 |
| Grant date | Sep 23, 2014 |
| Priority date | — |
| Expiry date | Sep 9, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2313/02741
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A refrigerant circuit of a heat pump water heater has a compressor, a four-way valve, a water heat exchanger, a heat storage transfer pipe contained in a heat storage water tank, an expansion valve, and an air heat exchanger and forms a refrigerating cycle by sequentially connecting them. A water circuit of the heat pump water heater has a water inlet pipeline that supplies water to the water heat exchanger, a hot water tank, and a water outlet pipeline that allows the water heat exchanger to communicate with the hot water tank, in which water is supplied to the heat storage water tank through a heat storage water tank water feed pipe branching from the water inlet pipeline by opening a heat storage water tank water feed opening/closing valve) and the water in the heat storage water tank can be discharged through the heat storage water tank water discharge pipe (by opening a heat storage water tank water discharge opening/closing valve).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.