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Title:
FIXED SWIRLER, AIR BUBBLE GENERATION DEVICE USING THE SAME AND BATH HOT WATER SUPPLY APPARATUS
Document Type and Number:
Japanese Patent JP2014121707
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve swirling force of water flow while suppressing clogging with foreign substances.SOLUTION: A fixed swirler 10 comprises a cylindrical tube 11 and a swirler structure 12. The swirler structure 12 is constituted of an inner cylindrical body 13, swirling flow generation vanes 14 and a turbulent flow generation stage portion 15. The turbulent flow generation stage portion 15 is caused to protrude inward in a radial direction from an inner wall surface 11A of the cylindrical tube 11 at a position in an axial direction corresponding to uppermost upstream end portions 14B of the swirling flow generation vanes 14. By such a configuration described above, since turbulent flow can be generated upstream the swirling flow generation vanes 14 by the turbulent flow generation stage portion 15, water flow passing through inter-vane flow passages 16 is reduced without forming swirling flow. Accordingly, even a small number of swirling flow generation vanes 14 can sufficiently generate the swirling flow and clogging with foreign substances can be suppressed by increasing opening areas of the inter-vane flow passages 16.

Inventors:
HEMMI KENICHI
TAKEUCHI SHIRO
HOSHIZAKI JUNICHIRO
HATA TAKASHI
NISHIUCHI YUSUKE
Application Number:
JP2014024958A
Publication Date:
July 03, 2014
Filing Date:
February 13, 2014
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
INST NAT COLLEGES TECH JAPAN
International Classes:
B01F5/00; A47K3/00; B01F3/04; B01F5/04
Domestic Patent References:
JPS4845959A1973-06-30
JPH07284642A1995-10-31
JPH05168882A1993-07-02
JP2003080279A2003-03-18
JP2009243783A2009-10-22
JPS4845959A1973-06-30
JPH07284642A1995-10-31
JPH05168882A1993-07-02
JP2003080279A2003-03-18
JP2009243783A2009-10-22
Foreign References:
US8147124B12012-04-03
US8147124B12012-04-03
Attorney, Agent or Firm:
Mamoru Takada
Hideki Takahashi
Yasuo Koizumi



 
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