| 摘要 |
1,208,162. Mixing flowing fluids. ROCKET RESEARCH CORP. 3 Jan., 1968 [9 Jan., 1967], No. 376/68. Heading BIC. [Also in Divisions F1 and F3] A working gas, e.g. for inflating an aircraft escape slide or a life raft, may be made by generating a hot gas as by combustion of a solid propellant cartridge 14 and using part to pressurize a container 18 from which a liquid refrigerant is supplied to a venturi mixer 26 through which 'the major portion of the hot gas passes. The refrigerant is vaporized in the venturi and the mixing chamber 34. The rate of burning of the cartridge and the dimensions of the apparatus are proportioned so that the effluent gas has a preselected temperature close to ambient. The effluent may be further mixed with air in the injector 36, 38. As embodied in the apparatus of Fig. 2 (not shown) the cartridge 14 and liquid refrigerant 18 are arranged in inner and outer coaxial containers and the venturi mixer 26 and mixing chamber 34 are positioned above the cartridge. The latter is ignited 'by a device 17, and the combustion gases rupture a burster disc 40, part passing through apertures 20 to pressurize the refrigerant which is discharged through conduits 2, 30. The mixing chamber 34 may contain steel wool, vanes or baffles. For operation in a low ambient temperature the refrigerant, and hence the cartridge and the body of the apparatus, may be kept at a preselected temperature above ambient by a thermostatically controlled heater (50).
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