Sectional high efficiency heat exchanger
US5074280A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 13, 1991 |
| Grant date | Dec 24, 1991 |
| Priority date | — |
| Expiry date | Mar 13, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24H3/105
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The improved sectional high efficiency heat exchanger of the present invention comprises apparatus for directing hot flue gases backwardly and into a defined lower combustion chamber. Whereupon, such hot flue gases are directed forwardly in the lower combustion chamber through the upper part thereof. The heated air stream flow is then directed into and to the rear of a lower flue pass, and finally forwardly and to the front of the heat exchanger through an upper flue pass for exiting into a flue collector box. As a result of the above structure, during the burner-"off" cycle combusting gases from the pilot burner are permitted to flow upwardly along the front wall of the lower combustion chamber and into the upper flue passes, thus permitting the heat exchanger to obtain the benefit of the heat energy of the pilot burner gas during the burner-"off" cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.