Process and device for the preparation of a gaseous mixture comprised by a vector gas and a vaporized additive
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United States of America Patent
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-
Jun 10, 1997
Grant Date -
N/A
app pub date -
Nov 20, 1995
filing date -
Nov 23, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sealed receptacle (1) contains the additive in liquid phase. A dip tube (3) permits sending the additive to a heating enclosure (5) in which the liquid vaporizes before being sent to a collector-mixer (11) through a constriction (10). The flow rate of additive is controlled by the pressure prevailing above the liquid in the receptacle (1) thanks to a control valve (20) connected by a pressure regulator (25) to a computer (26). This latter receives predetermined values of concentration of the mixture through an input (27). It is preferably connected to a detector (28) of the temperature of the enclosure and/or to an analyzer (30) of the composition of the mixture. Used particularly in anesthesia apparatus.
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