HIGH-EFFICIENCY GAS DISSOLVING DEVICE

WIPO Patent Application WO/2000/078466

A1

A high-efficiency gas dissolving device (10) which has a diameter-expanded nozzle with a collision member, wherein the shearing force and cavitation of water produced in the inner space of the diameter-expanded nozzle are utilized to efficiently atomize air, etc. This device (10) comprises a nozzle main body (11) having a water introducer (14), a gas feeder (16) and a diameter-expanded nozzle (17), and a collision plate (18) fixed to the nozzle main body. The water introducer (14) discharges high-pressure water, introduced through a water feeding port (12), from a discharge port (13). The gas feeder (16) is provided with a gas introducing port (15) in the water introducer (14) and mixes gas into the high-pressure water by ejector action. The diameter-expanded nozzle (17) positively generates cavitation in the inner space with a forwardly expanded diameter by the flow of high-pressure water discharged from the discharge port (13). The collision plate (18) is disposed with a gap defined in front of the diameter-expanded nozzle (17), so that the water mixed with fine air bubbles discharged from the diameter-expanded nozzle (17) is dispersed around.

YAMAMOTO HIROMI (JP)
TAGUCHI KENJI (JP)

PCT/JP2000/004013

December 28, 2000

June 20, 2000

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FUKUOKA PREFECTURE (JP)
RIKEN COMPANY LTD (JP)
YAMAMOTO HIROMI (JP)
TAGUCHI KENJI (JP)

B05B7/26; B01F5/02; B01F5/04; B05B7/04; B01F3/04; (IPC1-7): B05B7/26; B01F1/00; B01F3/04

JPS53144871A	1978-12-16
JPH0747264A	1995-02-21
JPS54129078U	1979-09-07

Tamiya, Hiroshi (Akasaka 1-chome Minato-ku Tokyo, JP)

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