Automatic-cycling heat-powered fluid pump
US5114318A · kind A · utility
Inventor
Key dates
| Filing date | Jul 5, 1991 |
| Grant date | May 19, 1992 |
| Priority date | — |
| Expiry date | Jul 5, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/46
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An improved heat-powered pump comprising two variable-volume fluid-containing systems located within two rigid walled containers, a pumping container and a condensing container. Each variable volume system is composed of a first variable volume chamber located within the pumping container, a second variable volume chamber located within the condensing container and a fluid conducting means interconnecting the first and second variable volume chambers. The fluid to be pumped occupies one of the two above-described systems and a quantity of a volatile working fluid which changes between its liquid and vaporous states during a normal pumping cycle occupies the other of the two systems. Finally a heat source is provided for vaporizing the volatile liquid and a heat sink is provided for condensing the volatile liquid vapor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.