Control device for heat pump with hot-water supply facility
US4943003A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1989 |
| Grant date | Jul 24, 1990 |
| Priority date | — |
| Expiry date | Feb 15, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/13
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A control device for a heat pump system having a hot-water supply facility is disclosed which comprises an input device for inputting the cost of electricity for operating a heat pump and for inputting the cost of fuel for operating a boiler. A first sensor detects the temperature of the ambient air. A second sensor detects the moisture of the ambient air. A third sensor detects the temperature of the hot-water supply. An operation circuit selects an operation mode on the basis of the output signals received from the sensors. A comparison circuit selects the cheaper energy form based on cost data inputted from the input device in the heating air mode and in the hot-water supply mode. A control circuit selectively operates the heat pump or the boiler based on the result of the comparison performed by the comparison circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.