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Patent Searching and Data


Title:
MULTIBLADE BLOWER
Document Type and Number:
Japanese Patent JP3944306
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To prevent increase of scroll loss by forming an inspection port on a desired position of the scroll.
SOLUTION: A part of a casing 6 and an arcuate portion of a scroll 2 serve as an inspection port lid 5 so as to open and close an inspection port 4 formed on an artucate portion of the scroll 2. The lid 5 can thus be arranged on an optional position of an outer periphery of the scroll 2. Design freedom of the position of the inspection port 4 is thus provided. According to requirement of clients, the position of the inspection port 4 can be varied. Size of its own can also easily be varied. As a result, design freedom and convenience for clients are improved compared to the conventional technique, where arrangement is limited to a flat portion near a discharge port. It is innecessary to form the inspection port, to arrange the winding end on an upstream side than usual, and thereby suppress increase of scroll loss.


Inventors:
Ishikawa, Shizuka
Kobayashi, Kazuo
Application Number:
JP1998000113377
Publication Date:
July 11, 2007
Filing Date:
April 23, 1998
Export Citation:
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Assignee:
HITACHI LTD
International Classes:
F04D17/16; F04D29/42; F04D29/62; F04D29/70; (IPC1-7): F04D29/70; F04D17/16; F04D29/42; F04D29/62
Domestic Patent References:
JP5312193A
JP1173496U
JP56145693U
Attorney, Agent or Firm:
井上 学