Title:
AIR BUBBLE GENERATION DEVICE, TUBULAR MEMBER, AIR BUBBLE GENERATION METHOD, AND METHOD FOR MANUFACTURING AIR BUBBLE GENERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/021182
Kind Code:
A1
Abstract:
This air bubble generation device is provided with a metal tubule (10) through which water passes, and a pump that pressure-feeds water containing a gaseous component into the metal tubule (10). Inside the metal tubule (10) is provided a throttle part (11) where the path for water is narrower than ahead and behind in the water flow direction. The cross-sectional shape of the throttle part (11), orthogonal to the flow direction, is rectangular. The gaseous component contained in the water is dissolved in the water by the pressure-feeding of the water into the throttle part (11), air bubbles are deposited by the decrease in pressure in the throttle part (11), a turbulent flow in the water is created in the throttle part (11), the air bubbles in the water are ruptured by shearing force from the turbulent flow, and the air bubbles are ruptured by shock waves caused by transonic flow occurring in the water exiting the throttle part (11).
Inventors:
GOSHIMA TAKASHI (JP)
Application Number:
PCT/JP2017/026463
Publication Date:
February 01, 2018
Filing Date:
July 21, 2017
Export Citation:
Assignee:
UNIV KAGOSHIMA (JP)
International Classes:
B01F3/04; B01F5/00; B01F5/06
Foreign References:
| JP2011115745A | 2011-06-16 | |||
| JP2007000843A | 2007-01-11 | |||
| JP2007216149A | 2007-08-30 |
Attorney, Agent or Firm:
KIMURA Mitsuru (JP)
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