Heat receiver for divers

Details Heat receiver for divers Heat receiver for divers

1978-09-18

1980-05-06

Recla, Henry J.

Surgery

Respiratory method or device

Inhaled gas heated or humidified by exhaled gas

165DIG17, 165 65, A62B 700

Patent

active

042012066

ABSTRACT:
A heat receiver is provided comprising a housing through which the breathing mixture passes in one direction and through which the exhaled breath passes in the opposite direction. The housing contains heat conductive elements through which the breathing mixture and exhaled breath pass and spacers positioned one between each pair of adjacent heat conductive elements. The spacers are poor heat conductors and non-hygroscopic to minimize moisture retention. In use, exhaled breath warms the heat conductive elements sequentially so that each element will be slightly cooler than the last element exposed to the exhaled breath. There will be minimal heat stored in the spacers and the moisture content of the exhaled breath tends to be carried through the device so that upon drawing breathing mixture through the device a substantial part of the sensible heat originally in the exhaled breath will be reclaimed by the breathing mixture. The latent heat originally in the exhaled breath will be lost.

REFERENCES:
patent: 3747598 (1973-07-01), Cowans
patent: 4090513 (1978-05-01), Togawa
patent: 4136691 (1979-01-01), Ebeling et al.

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