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Patent Searching and Data


Title:
SOUND MUFFLING CHAMBER
Document Type and Number:
Japanese Patent JPH0783493
Kind Code:
A
Abstract:

PURPOSE: To provide a sound muffling chamber cooperative arranged with an air conditioner in which a high sound muffling function against noise generated during air blowing operation and a loss resistance in the chamber is reduced.

CONSTITUTION: An anti-nose wall member 15 at an air blowing port of a blower is substantially in flush with the inner surface of a sound muffling member 12 of a rear surface wall 9. The front surface wall 7 is substantially in flush with a bottom wall 5 and a nose wall 14 of the blowing-out port 3 of the blower as well as the lower end of an air blowing-out port 8. A punched metal having a small hole is bent and then fixed. As a result, eddy flow produced near the bottom wall of the sound muffling chamber at the blowing-out port of the blower is eliminated so as to reduce a loss resistance and at the same time a high speed region of the blowing-out port of the blower may form an air passage near the rear wall, resulting in that an air passage is elongated and a high sound muffling effect can be attained.


Inventors:
FUKUTO MASAAKI
FUKUOKA MUTSUO
TANIYAMA NORIHISA
MATSUDA HARUHIKO
Application Number:
JP25009793A
Publication Date:
March 28, 1995
Filing Date:
September 10, 1993
Export Citation:
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Assignee:
HITACHI AIR CONDITIONING & REF
International Classes:
F24F13/02; G10K11/16; G10K11/172; (IPC1-7): F24F13/02; G10K11/16; G10K11/172
Attorney, Agent or Firm:
Kiyoaki Hayashi (1 person outside)