| 摘要 |
PCT No. PCT/JP96/03854 Sec. 371 Date Dec. 8, 1998 Sec. 102(e) Date Dec. 8, 1998 PCT Filed Dec. 27, 1996 PCT Pub. No. WO97/47392 PCT Pub. Date Dec. 18, 1997A two-fluid nozzle for atomizing a liquid by mixing the liquid and a gas at high speed, wherein desired particle size is obtained at a low pressure, and a device employing the same nozzle for freezing and drying a liquid containing a biological substance are disclosed. The two-fluid nozzle which is provided with a first injection hole for injecting the liquid and a second injection hole for injecting the gas, wherein the second injection hole is provided around the outer periphery of the first injection hole; a revolving means (108 or 118) is provided to at least the front portion of the first injection hole for rending the liquid into revolving flow; and a revolving means (117) is provided to at least the front portion of the second injection holes for rending the gas into revolving flow, is suitable for atomization of a liquid containing a biological substance because the atomization at a low pressure is possible through operation of the revolving means for rending the gas and liquid into revolving flows.
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