Gas-Fired Portable Unvented Infrared Heater

Abstract

A portable radiant heater supplied by an associated fuel source comprises a housing having a handle for transporting the heater. A plenum in the housing receives fuel from the associated fuel source and mixes the fuel with air. A burner assembly includes a radiant surface that communicates with the plenum. A regulator limits the pressure of the associated propane source to approximately eleven inches water column, and an oxygen depletion system associated with the burner assembly automatically shuts off the heater at a predetermined oxygen content. A tank fitting with a position that can be adjusted relative to the regulator facilitates the installation of the associated fuel source to the heater.

1 . A portable radiant heater supplied by an associated fuel source comprising:
 a housing having a handle for transporting the heater, said housing have a front and a rear portion wherein said front portion has a metal grid extending upon the front portion, the housing having a plane that extends through the center of the heater;   a burner assembly having a radiant surface that communicates with the plenum;   and a warming tray having a tray portion, said tray portion attached to said front metal grid for support, said tray portion having a plane which is perpendicular to the plane of said housing.