Heater for catalytic type propane or organic gas detector
AssigneeHoneywell Inc.
InventorsMerle E. Nicholas, James J. Renier
Life of this patent
Estimating the term…
Abstract
In a catalytic type propane gas or organic gas detector there is provided a heater for the catalyst of the heat pipe type. One end of the heat pipe is in the flame of the standing pilot and the other end is in contact with the catalyst so that the waste heat from the pilot flame is used to maintain the catalyst at an elevated temperature.
Claims8
A heat pipe type heater for a catalytic gas detector, the apparatus comprising:
- a catalytic gas detector requiring a source of heat for maintaining the catalyst at an elevated temperature;
- and,
- heat pipe means for transferring heat to said catalyst from a standing flame of a gas burner means with said flame adapted to ignite fuel from a main burner means to thereby maintain said catalyst at said elevated temperature, said heat pipe means having one end thereof proximate the flame and heated thereby, said heat pipe means having the other end thereof in heat transferring relation to the catalyst.
In a gas burner appliance of the type having a standing pilot, apparatus for utilizing waste heat from the standing pilot flame to heat a catalyst to an activation temperature, the apparatus comprising:
- a catalytic gas detector in which a catalyst requires being maintained at an elevated activation temperature;
- heat pipe means positioned for transferring heat from a standing pilot flame to said catalyst to thereby maintain said catalyst at said elevated activation temperature;
- said heat pipe means comprising a metal rod of a material having limited heat transfer capabilities for reducing the heat received from the flame to a substantially lower temperature at the other end,
- the heat pipe means further comprising a sealed metal tube portion which contains an amount of liquid which has a boiling point approximately the same as said elevated activation temperature.
Dependencies are inferred from the claim text.