Automatic reset control for direct spark ignition systems
US4325689A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1980 |
| Grant date | Apr 20, 1982 |
| Priority date | — |
| Expiry date | Mar 28, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2231/12
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A fuel ignition system for a heating apparatus includes a burner connected to a fuel supply, a valve for regulating the flow of fuel to the burner, an electrode assembly for producing a spark to ignite the fuel at the burner, an ignition system control module having input and output terminals for controlling the operation of the valve and the electrode assembly in response to a temperature-actuated device, the system control module producing output signals to open the valve and activate the electrode assembly for a predetermined time period to ignite the burner and locking in a non-operable mode to close the valve and deactivate the electrode assembly if the burner fails to ignite within the predetermined time period, and an automatic reset control for activating the system control module after a time-delay period. The automatic reset control includes a timer for determining the time-delay period having an input terminal and an output terminal and a function control including two triggerable bidirectional switches for activating the system control module and for activating and deactivating the timer. A first bidirectional switch is triggered by an output signal produced by the syst…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.