Vent proving system
US11262102B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 2019 |
| Grant date | Mar 1, 2022 |
| Priority date | — |
| Expiry date | Jul 26, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N5/245
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A vent proving system is described for use with a gas fired appliance. The gas fired appliance includes a gas burner, a vent damper for selectively opening or closing an exhaust vent from the gas fired appliance and a relay control for operatively controlling the vent damper and the gas burner to open the damper if the gas burner is on. The vent proving system comprises a sensor for sensing a variable in the vent representing air flow direction in the vent. An electrical switch is connected in series between the relay control and the vent damper. A controller is operatively connected to the sensor, the electrical switch and to the relay control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.