Fuel fired supplementary heater for heat pump
US4112705A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1977 |
| Grant date | Sep 12, 1978 |
| Priority date | — |
| Expiry date | Feb 18, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/13
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A heat pump is disclosed which has a compressor, an indoor condenser (for winter heating), outdoor evaporator (for winter heating) and piping for flowing a refrigerant between the compressor, the condenser and the evaporator. A second refrigerant loop is formed which bypasses the compressor and communicates with the condenser outlet and intake. A liquid metering pump flows liquid refrigerant from the outlet of the condenser via a fuel, e.g., liquid petroleum gas fired refrigerant vaporizer back to the condenser intake so that auxiliary heat from the burner for heating an indoor space by feeding to the condenser heated refrigerant vapor in addition to the refrigerant vapor supplied to the condenser by the compressor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.