Electric resistance heating devices – Heating devices – Vaporizer
Patent
1990-07-24
1992-04-28
Walberg, Teresa J.
Electric resistance heating devices
Heating devices
Vaporizer
392395, F24F 608, F24F 610, F22B 128
Patent
active
051094711
ABSTRACT:
An apparatus for warming and humidifying respiratory gases during artificial respiration includes two passive heat and moisture exchangers and an active warming and humidifying element disposed between them in a housing. The first passive heat and moisture exchanger serves to preheat and prehumidify cold and dry gases to be inhaled. In a further, downstream, active heat and moisture exchanger and the second heat and moisture exchanger, gases are additionally heated and humidified, thus ensuring optimum physiological conditioning of the respiratory gases to a temperature of 36.degree.-37.degree. C. and 100% relative humidity. In an exhalation phase, 70 to 80% of humidity and heat are recovered from the optimally conditioned humid and warmed respiratory gas with the aid of the two integral passive heat and moisture exchangers.
REFERENCES:
patent: 3638926 (1972-02-01), Melville
patent: 3659604 (1972-05-01), Melville
patent: 3916891 (1975-11-01), Freytag et al.
patent: 3982095 (1976-09-01), Robinson
patent: 4048993 (1977-09-01), Dobritz
patent: 4060576 (1977-11-01), Grant
patent: 4529867 (1985-07-01), Velnosky
patent: 4618462 (1986-10-01), Fisher
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