Gas pressure control for warm air furnaces
US9032950B2 · kind B2 · utility
6Cited by
95References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 7, 2011 |
| Grant date | May 19, 2015 |
| Priority date | — |
| Expiry date | Jan 13, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2241/02
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Systems, methods, and controllers for controlling gas-fired appliances such as warm air furnaces are disclosed. An illustrative furnace system can include a burner unit in communication with a combustion air flow conduit and heat exchanger, a variable speed inducer fan or blower adapted to provide a flow of combustion air to the burner unit, a furnace controller and motor speed control unit adapted to regulate the speed of the inducer fan or blower, and a pneumatically modulated gas valve adapted to variably output gas pressure to the burner unit based at least in part on the combustion air flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.