Title:
VACUUM PUMP
Document Type and Number:
WIPO Patent Application WO/2008/062598
Kind Code:
A1
Abstract:
A vacuum pump having a pump body and a controller integrated together, in which
the inside of the controller is appropriately cooled. In a control board on which
an element producing a large amount of heat is mounted and that is in contact with
a partition plate, the produced heat is directly transmitted from the control
board to the partition plate and then transmitted to a cooling jacket through
a sidewall. On the other hand, in a control board not in contact with the partition
plate, heat produced by an element mounted on the control board is transmitted
from the control board to air passing between stacked control boards. Consequently,air
passing between the stacked control boards is heated. When the heated air passes
through heat exchange fins cooled by cooling effect of the cooling jacket, the
heat is transmitted to the heat exchange fins and the cooled air is fed again to
the control board. Thus, heat produced by the control board is discharged to the
outside not only through the partition plate but also through the air circulating
in the controller.
Inventors:
KABASAWA TAKASHI (JP)
Application Number:
PCT/JP2007/068069
Publication Date:
May 29, 2008
Filing Date:
September 18, 2007
Export Citation:
Assignee:
EDWARDS JAPAN LTD (JP)
KABASAWA TAKASHI (JP)
KABASAWA TAKASHI (JP)
International Classes:
F04D19/04; F04B39/00; F04D29/00
Foreign References:
| JPH10131887A | 1998-05-19 | |||
| JP2005236099A | 2005-09-02 | |||
| JPS6369299A | 1988-03-29 | |||
| JP2006090251A | 2006-04-06 | |||
| JP2006250033A | 2006-09-21 |
Attorney, Agent or Firm:
NAKANO, Hitoshi et al. (12-8 Nishishinjuku 8-chome,Shinjuku-ku, Tokyo 23, JP)
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