| 摘要 |
<p>COMBINED RADIANT AND FAN HEATER A combined portable radiant and space area heater is provided, having a radiant heating means combined with a fan operable in at least a slow speed and a high speed mode. Operating in the low speed mode, the fan serves to locally recirculate heat provided by the radiant heating means, while permitting the heating means to maintain a high temperature with consequent high radiant heat output, suited for use primarily by an individual. In the low speed fan mode the recirculated air affects the temperature of a thermosensitive sensor, so as to control the energization of the heating means in the event that a limiting temperature of the sensor, indicative of local conditions, is exceeded. In the high speed mode of fan operation the temperature of the radiant heating means is effectively reduced, to significantly diminish the extent of heat radiation, the output instead being effected by high velocity dispersal of hot air, in a space area heating mode.</p> |
