초록 ▼

A pressurized space heater for burning gaseous fuel has as its main component a generally conical burner tube that receives at its narrow end a combustible mixture of fuel and primary air. Complete combustion in the tube is enhanced by two sets of holes disposed along the tube for admitting secondar

A pressurized space heater for burning gaseous fuel has as its main component a generally conical burner tube that receives at its narrow end a combustible mixture of fuel and primary air. Complete combustion in the tube is enhanced by two sets of holes disposed along the tube for admitting secondary air. The location, number and sizes of the holes are so chosen as to ensure complete combustion and to avoid the production of noxious substances.

대표청구항 ▼

A space heater comprising an elongate casing, a burner tube extending along the casing to a mouth thereof, a fan for introducing air under pressure into the casing on one side of the burner tube, and a mixing tube for mixing gaseous fuel with primary air, the burner tube having a relatively narrow e

A space heater comprising an elongate casing, a burner tube extending along the casing to a mouth thereof, a fan for introducing air under pressure into the casing on one side of the burner tube, and a mixing tube for mixing gaseous fuel with primary air, the burner tube having a relatively narrow entrance arranged to receive a combustible mixture from the mixing tube and expanding generally conically to a wider mouth for discharging combustion products into the casing for travel with air from the fan out of the mouth of the casing, the burner tube having two sets of circumferentially arranged holes for admitting secondary air from the casing into the tube, a first of said sets being located close to said entrance to the tube and a second of said sets being located along the tube towards its mouth, and the holes of each set providing a greater total area for the admission of air to the burner tube on the side of said tube remote from the fan than on the side adjacent the fan.