Patent EP0098235A2 successfully refreshed from Google Patents.
EP0098235A2
Expired / Lapsed
EP
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Automatic fire extinguishing system
Assignee: Hochiki Corp
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Filing: 1983-06-22
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Granted: —
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Expires: 2003-06-22
Abstract
Abstract An automatic fire extinguishing system wherein at least two fire detecting sensors are provided. The sensors are disposed at a distance from each other and movable in the horizontal and vertical directions to scan the region to be protected for detecting the angles of a fire source in the horizontal and vertical directions. A distance to the fire source is obtained from the angles of the fire source detected by the respective sensors. A discharge nozzle is set based on the fire source position determined by the angles and the distance of the fire source.
Inventors
- 👤 Yoshifusa Saito
- 👤 Hiroshi Nakayama
- 👤 Hisao Fukui
- 👤 Naoya Matsuoka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 17:57
CPC Classifications
A; A62; A62C; A62C37/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
217 words
An automatic fire extinguishing system comprising: at least two fire detecting sensors which are disposed at a distance from each other and each rotatable in the horizontal and vertical directions to scan a region to be protected; said fire detecting sensors being adapted to detect boundary angles of the extent of a fire source in the horizontal direction and detect the lowermost angle of the fire source in the vertical direction; an operation unit which determining an angle of the fire source in the horizontal direction in the form of an average angle of the detected boundary angles of the fire source in the horizontal direction and processing the detected lowermost angle of the fire source in the vertical direction as an angle of the fire source in the vertical direction; said operation unit being further adapted to compute a distance to the fire source based on the horizontal and/or vertical angles of the fire source detected by the respective fire detecting sensors; at least one discharge nozzle which is rotatable in the horizontal and vertical directions; and a control unit which controls the direction of the discharge nozzle based on the horizontal and vertical angles of the fire source determined by the operation unit and the distance to the fire source computed by the operation unit.
Claim 2
Dependent Claim
217 words
An automatic fire extinguishing system comprising: at least two fire detecting sensors which are disposed at a distance from each other and each rotatable in the horizontal and vertical directions to scan a region to be protected; said fire detecting sensors being adapted to detect boundary angles of the extent of a fire source in the horizontal direction and detect the lowermost angle of the fire source in the vertical direction; an operation unit which determining an angle of the fire source in the horizontal direction in the form of an average angle of the detected boundary angles of the fire source in the horizontal direction and processing the detected lowermost angle of the fire source in the vertical direction as an angle of the fire source in the vertical direction; said operation unit being further adapted to compute a distance to the fire source based on the horizontal and/or vertical angles of the fire source detected by the respective fire detecting sensors; at least one discharge nozzle which is rotatable in the horizontal and vertical directions; and a control unit which controls the direction of the discharge nozzle based on the horizontal and vertical angles of the fire source determined by the operation unit and the distance to the fire source computed by the operation unit.
Claim 3
Dependent Claim
54 words
An automatic fire extinguishing system as claimed in claim 1, which further comprises a general monitoring sensor for primary detection of the fire and general detection of the horizontal and vertical angles of the fire source, said fire detecting sensors being adapted to be actuated by a detection output from said general monitoring sensor.
Claim 4
Dependent Claim
32 words
An automatic fire extinguishing system as claimed in claim 1, wherein the opening of the discharge nozzle is controlled according to the distance to the fire source computed by the operation unit.
Claim 5
Dependent Claim
27 words
An automatic fire detecting system as claimed in claim 1, wherein the direction of the discharge nozzle is amended according to the distance to the fire source.
References Cited (Backward Citations)
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