Cooling device for cooling breathing gas in a respiratory protec

Details Cooling device for cooling breathing gas in a respiratory protec Cooling device for cooling breathing gas in a respiratory protec

1991-09-11

1993-12-14

Burr, Edgar S.

Surgery

Respiratory method or device

Means for cooling respiratory gas or respiration device

12820418, 12820522, A61M 1600, A62B 700, F24F 500

Patent

active

052692930

ABSTRACT:
The invention pertains to a cooling device for cooling breathing gas in a respiratory protection device with a heat collector exposed to the breathing gas stream. Such a cooling device is to be improved such that it can be prepared for cooling at any desired time prior to putting the respiratory protection device into operation, and that cold storage of a coolant is not required. The improvement is achieved by designing the heat collector as a storage tank for an evaporable liquid, which can be connected to an evacuated adsorbent container such that the liquid will evaporate while absorbing heat of vaporization, and its vapor is adsorbed on an adsorbent contained in the adsorbent container while releasing heat of adsorption and heat of condensation, wherein the adsorbent container is designed as a cooling body that is arranged outside the breathing gas stream and is intended to release the heat into the surroundings.

REFERENCES:
patent: 3385293 (1968-05-01), Phillips
patent: 3527214 (1970-09-01), Rio et al.
patent: 3646934 (1972-03-01), Foster
patent: 3650269 (1972-03-01), Curtis
patent: 4080103 (1978-03-01), Bird
patent: 4300547 (1981-11-01), Pasternack
patent: 4314566 (1982-02-01), Kiwak
patent: 4635629 (1987-01-01), Thorp et al.
patent: 4752310 (1988-06-01), Maier-Laxhuber et al.

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