Mist generator |
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| 申请号 | US3733060D | 申请日 | 1972-04-10 | 公开(公告)号 | US3733060A | 公开(公告)日 | 1973-05-15 |
| 申请人 | MERRITT M; | 发明人 | MERRITT M; | ||||
| 摘要 | A generator is provided for producing a liquid aerosol mist of uniform dispersion characteristics that is circulated through an oxygen tent or the like. The generator includes a housing having a primary air passage therethrough which in an intermediate section is formed with an expanding venturi tube. A nebulizer is supported by the housing and functions to entrain a therapeutic liquid within a pressurized gas and subsequently to introduce the liquid-gas stream into the primary air passage upstream of the venturi tube. The expansion of the liquid-gas stream in the venturi creates a pressure differential in the passage to draw air through the same, whereby the liquid-gas stream uniformly is dispersed within the primary air stream. | ||||||
| 权利要求 | 1. A mist generator comprising a generator body having a generally horizontal primary air passage therethrough, a tubular nebulizer extending vertically through said primary air passage, a liquid reservoir beneath said nebulizer, said nebulizer comprising concentric inner and outer tubular portions forming inner and outer concentric chambers, axially aligned openings in said inner and outer chambers, such axis of alignment extending generally along the centerline of said primary air passage, the inner chamber being connected to a source of gas under pressure while the outer chamber is in communication with said liquid reservoir whereby gas passing through said aligned openings will draw liquid from said reservoir and aspirate a liquid-gas stream into said primary air passage, a reed adapted to vibrate at high frequency mounted on said nebulizer having an inwardly projecting head thereon adapted to engage the liquid-gas stream and disperse the same into a cone of very fine droplets in the primary air passage. 2. A generator as set forth in claim 1 wherein said primary air passage includes an expanding frusto-conical venturi tube, the upstream end thereof being positioned about said reed on said nebulizer. 3. A generator as set forth in claim 2 wherein said primary air passage terminates in an elbow providing an enlarged chamber downstream of said venturi tube. 4. A generator as set forth in claim 3 including a plurality of openings in the bottom edge of said venturi tube to permit liquid to flow from said enlarged chamber downstream of said venturi tube back into the liquid reservoir. 5. The generator as set forth in claim 1 wherein both ends of the generator body passage are in fluid communication with an oxygen tent or the like, whereby a moisture laden gas may continually be cycled through the oxygen tent. 6. A mist generator as set forth in claim 1 wherein the inner of said axially aligned openings is relatively smaller than the outer, whereby the gas expelled through said inner opening expands in its passage through the outer chamber to draw the liquid from said reservoir through the outer opening into said primary air stream. |
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