Title:
差圧ダンパー
Document Type and Number:
Japanese Patent JP6762859
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a differential pressure damper which is excellent in transportability to an installation site and workability at the installation site, which operates reliably by pressurization of a pressurizing chamber on the upstream side, and which does not need to be made separately for each processing air volume.SOLUTION: A differential pressure damper 100, which is attached to an opening 11 formed in a fire door 10 that partitions a space inside a building, has a function of opening when receiving a preset atmospheric pressure. The differential pressure damper 100 includes a plurality of damper units 20A, 20B, 20B, 20C and fixing means for attaching a plurality of damper units 20A, 20B, 20B, 20C to the fire door 10 which are arranged in parallel in the opening 11 formed in the fire door 10. Each of the damper units 20A, 20B, 20B, 20C includes a frame body 25 having a rectangular shape when viewed from the front side and single blade 27 that is attached via a shaft body to a frame body 25 in a pivot manner for opening and closing a region surrounded by the frame body 25.SELECTED DRAWING: Figure 2
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Inventors:
Suzuki Nobuhito
Yamazaki Shogo
Okura Eishi
Exit Kaichi
Tsutomu Nagaoka
Takuya Shigematsu
Toshio Urabe
Keiichiro Kinoshita
Yamazaki Shogo
Okura Eishi
Exit Kaichi
Tsutomu Nagaoka
Takuya Shigematsu
Toshio Urabe
Keiichiro Kinoshita
Application Number:
JP2016232401A
Publication Date:
September 30, 2020
Filing Date:
November 30, 2016
Export Citation:
Assignee:
TAKENAKA CORPORATION
Kyoritsu Airtech Co., Ltd.
Kyoritsu Airtech Co., Ltd.
International Classes:
E06B5/16; A62C2/14; E06B7/084; F24F13/15
Domestic Patent References:
| JP984892A | ||||
| JP7259407A | ||||
| JP2003120141A | ||||
| JP2002272866A | ||||
| JP20098358A | ||||
| JP6241551A | ||||
| JP5269218A | ||||
| JP9113023A | ||||
| JP11200722A | ||||
| JP201684673A |
Foreign References:
| US20160265806 | ||||
| US5730653 |
Attorney, Agent or Firm:
Hisashi Kato
Keita Tohsaka
Hiroshi Mori
Toru Minase
Keita Tohsaka
Hiroshi Mori
Toru Minase