Gas and liquid contact apparatus – Contact devices – Porous sheet
Patent
1975-07-11
1977-11-22
Miles, Tim R.
Gas and liquid contact apparatus
Contact devices
Porous sheet
261 39R, 261DIG65, 128188, 128192, A61M 1500, A61M 1700
Patent
active
040596575
ABSTRACT:
Anesthetic vaporizer of the flow-through type having a calibrated flow control valve unit for proportional distribution of the inlet gas between a vaporizing chamber and a main bypass passage to obtain a desired anesthetic concentration. A rotary, multiple-port valve with a multiplicity of laminar flow-type passages in parallel is operable in discrete steps for adding the anesthetic vapor from the chamber in predictable increments to a preset flow of the inlet gas for proportional gas division. An auxiliary gas bypass for temperature compensation has a cone-type valve with restricted opening controlled by a temperature responsive motor in the vaporizing chamber. A wick assembly in the anesthetic vaporizing chamber guides the chamber gas through a multiplicity of parallel passages formed by stacked sheets of absorbent and corrugated materials respectively, to obtain maximum vaporization of the anesthetic.
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Airco, Inc.
Bopp Edmund W.
Clements Gregory N.
Mathews H. Hume
Miles Tim R.
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