Electric resistance heating devices – Heating devices – Vaporizer
Patent
1995-06-07
1997-06-03
Walberg, Teresa J.
Electric resistance heating devices
Heating devices
Vaporizer
F22B 128
Patent
active
056363192
ABSTRACT:
Portable and personal-sized warm air humidifiers for delivering a steam air mixture having a uniform moisture at a temperature that does not cause a sensation of pain. A steam ejector is used to mix the steam from an evaporation chamber with the air entering the humidifier. A difference in the water level between a water supply compartment and the evaporation chamber provides a constant pressure in the evaporation chamber which drives generated steam through a steam nozzle communicating with the steam ejector. The dimensions of the steam nozzle are determined in relation with the rate of steam generation in accordance with steam velocity to effectively eliminate or minimize the noise normally associated with the passage of steam through a nozzle. The invention is also well utilizable in a humidifier having a filter medium to filter particulates from the air notwithstanding the drop in pressure of the air across the filter medium from the outside to the interior of the humidifier. The warm air humidifiers only heat a small portion of water thereby providing a safer humidifier in the event of tipping.
REFERENCES:
patent: 1756053 (1930-04-01), Colton
patent: 2182836 (1939-12-01), Zummach
patent: 4190052 (1980-02-01), McCarthy
patent: 4752423 (1988-06-01), Wong
patent: 4810854 (1989-03-01), Jursich et al.
patent: 5067169 (1991-11-01), Chiu
patent: 5073967 (1991-12-01), Marino
Chauviaux Gabriel
Crowhurst Paul
Glucksman Dov Z.
Lekhtman David
Paik Sam
Walberg Teresa J.
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