Title:
煙感知器
Document Type and Number:
Japanese Patent JP7364342
Kind Code:
B2
Abstract:
To provide a thin photoelectric smoke detector of a vertically short size which is installed on a ceiling or the like and which is capable of accurately sensing smoke due to a fire disaster, and is space saving even in a small space, while preventing the generation of a non-fire alarm due to steam from a bath room or dust in a warehouse or the like.SOLUTION: In a fume detector 2, a two-step optical bench 211 has a knoll part 222 projecting toward a fume detection unit 21 from below in a center of a fume introduction part 22, make an ascent of outer air taken into the inside of the fume introduction part while rotating it in one direction, and introduces it to a fume detection chamber 213 provided inside of the fume detection part.SELECTED DRAWING: Figure 2
Inventors:
Tatsuhiko Ito
Application Number:
JP2019032277A
Publication Date:
October 18, 2023
Filing Date:
February 26, 2019
Export Citation:
Assignee:
Nomi Disaster Prevention Co., Ltd.
International Classes:
G08B17/10
Domestic Patent References:
| JP54159279A | ||||
| JP2018010444A | ||||
| JP2018067067A | ||||
| JP2016099733A | ||||
| JP2010086378A |
Attorney, Agent or Firm:
Patent Attorney Corporation Ebisu International Patent Office
Mikio Suzuno
Mikio Suzuno
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