Low maintenance fluid heater and method of firing same
US7681536B2 · kind B2 · utility
7Cited by
14References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 22, 2007 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | Mar 20, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24H9/0094
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A fluid heater constructed of rectangular tubing through which fluid to be heated is circulated in a circuitous path. The floor and walls of a combustion chamber of the heater are constructed of the rectangular tubing. A tubular coil stack is positioned over the combustion chamber and surrounded by coil stack chamber walls constructed of the rectangular tubing. Consequently, all surfaces of the fluid heater exposed directly to flame are constantly cooled by the fluid to be heated. A combustion unit of the fluid heater is removable to facilitate maintenance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.