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Title:
BLOWER DEVICE
Document Type and Number:
Japanese Patent JP3675608
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a compact blower device incorporating two blowers, and incorporating a sound suppressing chamber for discharge gas and cooling gas.
SOLUTION: A blower device 1 has a box-like housing 10 in which two blowers are arranged up and down. An intake pipe 150 is connected to an equipment for generating negative pressure, and is communicated with a suction port 156 of a first blower 100 through an air cleaner 152 and a three-way valve 154. A discharge port 158 of the blower 100 is opened to a first sound suppressing passage chamber 52. Discharged gas is muffled by a passage resistance of the sound suppressing passage chamber 52, and is then discharged from an opening 525. Discharged air from a discharged port 258 of a second blower is similarly processed. The ambient air for cooling the blowers is led through an intake port 34, and is accelerated by a fan 130 so as to cool a motor casing 110 and a blower casing 130. The cooling air is introduced into a second sound suppressing chamber 44 through a passage 36, and is muffled therein before it is discharged from an opening 555. The cooling air for the second blower is similarly processed.


Inventors:
Ishida, Fumiaki
Moritake, Takeshi
Fujio, Masayuki
Asabuki, Hiroshi
Kimura, Takeshi
Kaitsuumaru, Hiroshi
Application Number:
JP1997000133400
Publication Date:
July 27, 2005
Filing Date:
May 23, 1997
Export Citation:
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Assignee:
HITACHI LTD
HITACHI KEIYO ENG CO LTD
International Classes:
F04D17/12; F04D23/00; F04D25/16; F04D29/66; H02K9/02; H02K9/06; (IPC1-7): F04D29/66; F04D25/16
Domestic Patent References:
JP8219098A
JP63143713U
JP54141506U
JP50131619U
JP5187390A
Attorney, Agent or Firm:
特許業務法人第一国際特許事務所
特許業務法人第一国際特許事務所
沼形 義彰
住吉 多喜男