Electric heating – Heating devices – Resistive element: igniter type
Patent
1974-08-05
1976-04-20
Albritton, C. L.
Electric heating
Heating devices
Resistive element: igniter type
126113, 219275, 261130, 261DIG15, 261DIG46, F22B 128
Patent
active
039521818
ABSTRACT:
A humidifier includes an electric heating coil and a water receiving/steam generating coil both positioned in a steam generation zone of a housing. The heating coil functions to vaporize water flowing through the water receiving/steam generating coil into steam by raising the temperature within the steam generation zone to an operating temperature which is sufficiently high to kill bacteria entering the humidifier with the water. The water receiving/steam generating coil is formed from a material having substantial thermal expansion characteristics whereby the coil substantially expands as the temperature within the steam generation zone is raised and substantially contracts as the steam generation zone cools. The expansions and contractions of the coil dislodge sediment tending to form therein, and the sediment is flushed from the coil by the fluid flowing therethrough. Fluid from the water receiving coil together with any sediment carried thereby is discharged into the upper portion of a sediment separation zone in the housing. Steam passes directly from the upper portion of the sediment separation zone into the plenum chamber of an associated air handling apparatus. Sediment and any unvaporized water are received in the lower portion of the sediment separation zone under the action of gravity. A drain extending into the lower portion of the sediment separation zone functions as a syphon to periodically remove excess liquid accumulated therein. A switch mounted in the housing actuates the fan of the associated air handling apparatus whenever the humidifier is operating.
REFERENCES:
patent: 219311 (1879-09-01), Salisbury
patent: 733259 (1903-07-01), Neiman
patent: 734871 (1903-07-01), Hopwood
patent: 1515954 (1924-11-01), Kline
patent: 1716329 (1929-06-01), Simpson
patent: 2059408 (1936-11-01), Stark
patent: 3332672 (1967-07-01), Schipper
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