초록 ▼

A portable electrically-powered space heater includes an electrically-powered boiler generating steam at subatmospheric pressure from a mixture of water and ethylene glycol that is circulated through a closed loop heat exchanger, portions of which comprise fin-tube radiators. The boiler is thermosta

A portable electrically-powered space heater includes an electrically-powered boiler generating steam at subatmospheric pressure from a mixture of water and ethylene glycol that is circulated through a closed loop heat exchanger, portions of which comprise fin-tube radiators. The boiler is thermostatically controlled by a thermostat located in a chimney into which a downdraft of ambient air is drawn by a fan creating a forced-flow of air over the fin tubes. An automatic temperature-responsive time delay mechanism allows the boiler to get up to its operating temperature before the fan is actuated to draw air across the thermostat. The heater is further characterized by a novel design wherein a pair of upstanding heat exchangers are each housed in branches of a generally Y-shaped housing with a fan located in the stem-forming portion thereof effective to cooperate with the heat exchangers and the double-walled side panels alongside thereof to distribute a curtain of warm air over a 90°or better swath.

대표청구항 ▼

A space heater which comprises: top and bottom walls, a rear wall and angled sidewalls cooperating with one another in assembled relation to define an open front housing having a generally Y-shaped transverse section with a stem-forming portion at the rear and a pair of divergent branch portions ope

A space heater which comprises: top and bottom walls, a rear wall and angled sidewalls cooperating with one another in assembled relation to define an open front housing having a generally Y-shaped transverse section with a stem-forming portion at the rear and a pair of divergent branch portions opening toward the front thereof; a horizontally-disposed boiler extending transversely of the housing in the bottom thereof at the juncture between the stem and branched portions; a heat transfer fluid in said boiler containing a vaporizable component ; heating means for heating the heat transfer fluid and boiling the vaporizable component thereof; a pair of vertically-disposed spaced heat exchangers mounted, respectively, in the branch portions of the housing and connected to receive hot vapor from the boiler; and a blower located in the stem-forming portion of the housing positioned and adapted to receive ambient air from the environment through an air inlet in said stem portion and direct the same forwardly between the heat exchangers in heat exchange relation thereto, said heat exchangers cooperating with one another and the angled sidewalls of the housing to split off parts of the forwardly-directed airstream and direct the same out sideways through the branch portions, and said diverted parts of the airstream combining with the forwardly-directed part passing between the heat exchangers to produce a spread of heated air at least approximately 90°in angular extent.