MELANGEUR DE GAZ A PLUSIEURS EJECTEURS, DESTINE A UN APPAREIL D'ASSISTANCE RESPIRATOIRE

A device and a process for mixing at least a first gas component with a second gas component is suitable for mixing gases in a portable respirator. The gas mixer device makes it possible to bring about the particularly necessary concentration of the first gas component at different volume flows of t...

Full description

Saved in:
Bibliographic Details
Main Authors KUNZ RAINER, ROSSEN THOMAS, SCHROTER JOACHIM, WRUCK NORBERT
Format Patent
LanguageFrench
Published 23.07.2004
Edition7
Subjects
DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
TRANSPORTING
Online AccessGet full text

Cover

More Information
Summary:A device and a process for mixing at least a first gas component with a second gas component is suitable for mixing gases in a portable respirator. The gas mixer device makes it possible to bring about the particularly necessary concentration of the first gas component at different volume flows of the gas mixture generated. The gas mixer device has a plurality of ejectors (1, 2) of different sizes, which are designed according to the principle of a venturi nozzle. The ejectors have respective propellant gas connections (3, 9) for feeding the first gas component from a propellant gas container (4) and suction channels (5, 10) for feeding the second gas component from a mixing chamber (6), as well as gas outlets (8, 11) to a respiration connection (7). An evaluating and control unit (17) evaluates the signals of two volume flow sensors (15, 16) and correspondingly actuates proportional valves (13, 14) arranged in the propellant gas connections (3, 9) for feeding the first gas component. For small respiration flows, the proportional valve (13) in the propellant gas connection (3) for the smaller ejector (1) is actuated by the evaluating and control unit (17) for opening, the proportional valve (14) in the propellant gas connection (9) for the larger ejector (2) is actuated for opening in the case of medium respiration flows, and both proportional valves (13, 14) are actuated by the evaluating and control unit (17) for opening for high respiration flows.
Bibliography:Application Number: FR20030001556