Pitot heat pump
US4304104A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 2, 1980 |
| Grant date | Dec 8, 1981 |
| Priority date | — |
| Expiry date | May 2, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B29/003
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pitot heat pump is described wherein a multi-stage pitot pump is employed as the compression means in a heat pump thermodynamic cycle. The heat pump is comprised of a multi-stage vapor pitot pump, liquid pitot pump, turbine, vaporizer, evaporator, condenser and expansion valve. The turbine is used to rotate a shaft to which the impellers of the pitot pump are attached. Refrigerant gas from the evaporator enters the first stage of the pitot pump and the impeller therein forces the refrigerant gas outwardly where it enters the narrow end of a pitot tube provided therein. The discharge end of the pitot tube is in communication with the next stage of the pitot pump. In passing through the pitot tube, the refrigerant gas expands and the centrifugal force and the kinetic energy of the gas provide the energy whereby the refrigerant gas is compressed. After the last stage, the compressed gas is transmitted to the condenser of the heat pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.