Multiple-purpose instantaneous gas water heater
US4922861A · kind A · utility
28Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1989 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | Jan 25, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2237/02
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A multiple purpose instantaneous gas water heater comprises a combination of a larger combustion capacity type first burner with a smaller combustion capacity type second burner. Each of the burners can be controlled by a proportional combustion control method and/or an intermittent combustion control method. It is possible to combine these functions within a microcomputer system so as to use each or both burners selectively, or both together, so that it is possible to select water from a wide range of hot water temperatures or to select a target temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.