Gas-supply system for catalytic gas burners
US4511326A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 26, 1982 |
| Grant date | Apr 16, 1985 |
| Priority date | — |
| Expiry date | Apr 26, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23Q9/14
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A catalytic gas burner, as used e.g. in a mobile space heater, comprises a valve housing divided by at least two poppet valves into three or more cascaded chambers. One chamber communicates with a gas inlet and is normally closed by a first poppet valve which can be opened by a push rod and held open by an electromagnet, the latter being energized under the control of a thermocouple as long as an adjoining ancillary nozzle emits a monitoring flame. This nozzle communicates with another chamber to which gas is admitted in the open state of the first poppet valve and which also feeds the main nozzle head of the burner through a supply conduit including a manually and/or thermally controlled flow regulator. A second poppet valve, fixed to the push rod, is open as long as that rod is depressed against a spring force to give access to a further chamber from which supplemental gas is conveyed through another conduit to the nozzle head during a start-up phase while an igniter is being actuated. As long as the first poppet valve is open, gas passes through a throttled branch of the supply conduit to the nozzle head by way of the flow regulator which also has a passage controlled by a pisto…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.