DEFOAMING METHOD - TOYO SEIKAN KAISHA LTD

Title:

DEFOAMING METHOD

Document Type and Number:

WIPO Patent Application WO/2007/086339

Kind Code:

A1

Abstract:

A defoaming method capable of destroying foams generated when a container is filled with drink, or the like, efficiently at a high speed and destroying foams effectively even in the case of a container having a narrow mouth. Liquid surface (6) in a container (1) is irradiated with pulse-like light (2) and a pulse-like sound wave (8) is generated from an irradiated point (7) as a sound source. The pulse-like sound wave thus generated propagates from the sound source as a strong spherical wave to reach a bubble (9) and to destroy the bubble. It can also destroy a bubble located at a place remote from the optical path quickly, thus destroying bubbles efficiently at a high speed. Alternatively, pulse-like light is condensed at a gas portion above the liquid surface and the bubbles can be destroyed with a shock wave generated by breakdown phenomenon.

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Inventors:

TAKENOUCHI KEN (JP)
YUASA YOSHIYUKI (JP)

Application Number:

PCT/JP2007/050904

Publication Date:

August 02, 2007

Filing Date:

January 22, 2007

Export Citation:

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Assignee:

TOYO SEIKAN KAISHA LTD (JP)
TAKENOUCHI KEN (JP)
YUASA YOSHIYUKI (JP)

International Classes:

B01D19/02; B67C3/00; B01D19/00

Domestic Patent References:

WO1998015491A2

1998-04-16

Foreign References:

JPH05317606A	1993-12-03
JPH09328193A	1997-12-22
JP2002523205A	2002-07-30
JPH06294777A	1994-10-21
JP2003121423A	2003-04-23
JP2003185639A	2003-07-03
JPH09328193A	1997-12-22
JPS6290397U	1987-06-09
JPH06191595A	1994-07-12

Other References: