초록 ▼

Gas mixing and flow smoothing apparatus for use in for example an anaesthesia system comprises a mixing chamber (8) which receives the flow of two or more gases via control valves (6,7). The mixing chamber (8) is adapted to absorb fluctuations in the pressure of the gases therein through the provisi

Gas mixing and flow smoothing apparatus for use in for example an anaesthesia system comprises a mixing chamber (8) which receives the flow of two or more gases via control valves (6,7). The mixing chamber (8) is adapted to absorb fluctuations in the pressure of the gases therein through the provision of for example a spring-loaded piston (not shown) which forms one wall of the chamber, and the pressure at the outlet (30) from the chamber (8) is maintained at a substantially constant pressure by means of a valve (9). If desired, further attenuation of the gas flow may be achieved through the provision of a second series arrangement of surge damper (11) and back pressure valve (10) located downstream from the valve (9).

대표청구항 ▼

Apparatus for mixing and smoothing fluctuating flows of two or more gases, comprising a mixing chamber with at least two inlet ducts and an outlet duct, means for delivering a fluctuating flow of gas to each of said inlet ducts, the mixing chamber including means for absorbing fluctuations in the pr

Apparatus for mixing and smoothing fluctuating flows of two or more gases, comprising a mixing chamber with at least two inlet ducts and an outlet duct, means for delivering a fluctuating flow of gas to each of said inlet ducts, the mixing chamber including means for absorbing fluctuations in the pressure of the gases therein, and a valve connected to said outlet duct downstream of the chamber for maintaining a substantially constant pressure at said chamber outlet duct.