WO1997030427A1 - Verfahren und vorrichtung zum detektieren von entstehungsbränden - Google Patents
Verfahren und vorrichtung zum detektieren von entstehungsbränden Download PDFInfo
- Publication number
- WO1997030427A1 WO1997030427A1 PCT/EP1997/000682 EP9700682W WO9730427A1 WO 1997030427 A1 WO1997030427 A1 WO 1997030427A1 EP 9700682 W EP9700682 W EP 9700682W WO 9730427 A1 WO9730427 A1 WO 9730427A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- suction
- detector
- section
- suction openings
- hole
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
- G08B17/113—Constructional details
Definitions
- the present invention relates to both a method and a device for detecting fires in rooms or electronic devices.
- room air or device cooling air samples are continuously fed to a detector for detecting a fire parameter via at least one supply line, which is arranged in the room to be monitored or on or in the device to be monitored and has a number of suction openings, and an evaluation unit , which is electrically connected to the detector, emits a signal according to predetermined criteria when the detector detects a fire parameter.
- the device mentioned contains a detector for recognizing a fire parameter, at least one supply line which is provided with suction openings, and a fan which supplies ambient air samples to the detector via the supply line.
- Both methods and devices of this type are known and are used for the earliest detection of fires in their development phase.
- Typical areas of application are either rooms with high-quality or important facilities, such as rooms with computer systems in banks or the like, or the computer systems themselves.
- representative portions are constantly taken from the room air or the device cooling air and fed via at least one feed line to the detector for recognizing a fire parameter.
- supply lines is preferably, but not exclusively, to be understood as pipelines which are fastened, for example, under the ceiling for a room protection and lead to an air inlet opening in the housing of the detector, and which provide the room or device cooling air through suction openings suck in, which are provided in the pipes.
- the feed line can also be an intake funnel, a collecting hood or a T-shaped tubular hood which, for example, points to the air outlet grille of an electronic one Device placed and thereby arranged in the main cooling air flow of the device.
- fire parameter is understood to mean physical parameters which are subject to measurable changes in the vicinity of an incipient fire, e.g. the ambient temperature, the solid or liquid or gas content in the ambient air (formation of smoke particles or smoke aerosols or formation of steam) or the ambient radiation.
- the suction openings in the pipes are distributed at regular intervals over the entire room.
- the detection reliability of a fire parameter decreases with increasing distance from the intake fan due to the pressure drop occurring in the pipelines.
- the supply line can also consist of a pipeline, which, however, is then significantly shorter, so that all suction openings can be the same.
- the present invention addresses these disadvantages, the task of which is considered to be a high effectiveness of the method and a high sensitivity of the device for detecting incipient fires over the entire intake To achieve range and at the same time to allow easy assembly of the device.
- the great advantage of this solution according to the invention is that all the suction bores can have the same diameter and that the effective cross section of the suction openings on site, i.e. during assembly, can be adapted to the respective requirements.
- This is a great advantage in that standard feed lines can be used, the suction holes of which are prefabricated in the factory in an inexpensive and much more precise manner.
- holes drilled at the place of assembly have the disadvantage that they have a burr, which is undesirable because of the air turbulence generated thereby, the particle entry and not least because of the increased noise caused by the air flowing past.
- the films for reducing the suction cross-section have the advantage that they do not "whistle", as would also be the case, for example, with perforated disks made of plastic or metal.
- the object on which the present invention is based is also achieved by a device of the type mentioned at the beginning, in which the cross section of the suction openings increases with increasing distance from the fan, and further by an alternative embodiment of the device of the type mentioned at the beginning, in which the Suction holes in the feed line, which form the suction openings, all have the same diameter, and in which each suction hole is covered with a film that has a punched-out hole that has a predetermined, smaller diameter than the suction hole has and is arranged concentrically with this, so that the suction opening receives a reduced cross section.
- the first of the devices mentioned is tailored for room protection.
- Suction openings also increases with increasing distance from the fan, the pressure drop in the feed line is compensated for and the same suction power is produced at the intake opening over the entire length of the feed line.
- the second device described is tailored to the facility monitoring, where all the suction openings can be the same, but depending on the number of the suction openings must have different diameters in order to keep the total suction area within a certain predetermined range.
- the supply line can be made in the form of a pipeline by the meter with suction holes of the same size throughout, cut to the required length at the place of assembly and then adapted to the requirements of the respective location with regard to the (indirectly) length-dependent diameter of the suction openings with the foils.
- the room air or device cooling air samples are actively supplied to the detector by means of a fan
- foils with larger hole cross sections are used with increasing distance from the fan.
- the method is provided for space protection for the reasons explained above. Accordingly, it is provided as a further development for the device provided for space protection according to claim 3 that the suction bores in the feed line, which form the suction openings, all have the same diameter, and that each suction bore with the one already described above
- Foil is covered in such a way that the resulting suction opening receives a reduced cross section.
- the film reducing the cross section of the suction opening is fastened to the pipeline by means of a band.
- This band can, for example, have striking red edge strips so that the suction points on the pipeline are clearly identified.
- the film reducing the effective cross section of the suction opening can have an imprint of the hole diameter which always remains easy to read when the banderole is used.
- FIG. 1 shows a schematic sectional illustration of a device for detecting incipient fires on the wall of a room
- 2a shows a plan view of a pipeline section with a suction bore
- 2b shows the pipe section according to FIG. 2a, but with the film according to the invention above the suction bore
- FIG. 2c shows the pipe section according to FIG. 2b, but with the banderole attached
- 2d shows a plan view of the film which is glued over the suction bore
- Fig. 2e a banderole as it is glued to protect the film on the pipe section of FIG. 2c.
- Fig. 1 shows the housing 9 of a fire detector 1, which is attached to the wall 13 of a corner of the room. On the ceiling of the room there is a supply line 15 in the form of a pipe. Clamps 11 attached, which continues on the vertical wall of the room to the detector housing 9.
- the pipeline 15 has in
- the housing 9 of the fire detector 1 has, as components essential in this connection, a sensor 3 for recognizing a fire parameter and a fan 2 for sucking in the room air samples.
- the sensor 3 has air slots 6, 7 in the upper region, through which the fan 2 draws the air flow 8.
- An air flow sensor 14 monitors the continuity of the air flow.
- FIG. 2a to c each show a section of the pipeline 15 with a single suction bore 10, of which, however, a whole series of other identical suction bores are provided distributed over the entire length of the pipeline 15.
- the suction bore 10 is covered with a film 16 which has a punched-out hole 21 which is flush with the suction bore 10 and reduces the effective cross section of the suction opening.
- a band with conspicuous edge strips is glued over the film 16 and partially wrapped around the pipe section 15, whereby a secure hold and protection of the film 16 is achieved. The band has a punched out
- FIG. 2d shows a plan view of a circular film 16 which has a concentrically punched hole 21 of a predetermined size (here: 7 mm).
- FIG. 2e shows a top view of the band 17 with the centrally punched hole 19 and a striking edge strip 20 on both sides.
- the hole 19 can have a standard diameter which corresponds to that of the suction bores in the pipeline 15. Both, both the film 16 and the banderole 17, are self-adhesive on the back.
- the completely identical suction bores 10 in the pipeline 15, which form the suction openings 18 (FIG. 1) adapt to the respective needs in a simple and very effective manner: in space protection, where it is provided according to the invention that the cross-section of the suction openings 18 increases with increasing distance from the fan 2, the diameter of the suction bores 10 in the vicinity of the fan 2 increases reduced to a certain extent, and with increasing distance from the fan 2, foils 16 with larger hole cross sections are used.
- the suction openings 10 provided in the supply line 15 by the manufacturer are made dependent on sticking a film onto a particular one the number of provided suction openings 18 reduces the calculated diameter, which ultimately reduces the effective cross section of the suction openings 18.
- a diameter of 6.8 mm is provided for each suction opening, with 8 suction openings provided this diameter continuously increases from a diameter of 3.9 mm (closest to the fan) up to a diameter of 4.0 mm (farthest from the fan).
- the identical diameter of the suction openings 18 is, for example, 6.0 mm in the case of two openings and, for example, is only 3.6 mm in the case of eight openings.
- the required size of the suction openings can be achieved by gluing on the corresponding foils 16, the punching hole of which has the required diameter, while the suction bore 10 in the pipeline 15 itself has a standard diameter of 10 mm, for example.
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fire-Detection Mechanisms (AREA)
- Fire Alarms (AREA)
- Control Of Combustion (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT97903277T ATE188570T1 (de) | 1996-02-15 | 1997-02-13 | Verfahren und vorrichtung zum detektieren von entstehungsbränden |
SK1100-98A SK284815B6 (sk) | 1996-02-15 | 1997-02-13 | Spôsob a zariadenie na detegovanie vznikajúcich požiarov |
DK97903277T DK0880765T3 (da) | 1997-02-13 | 1997-02-13 | Fremgangsmåde og indretning til detektering af begyndende brande |
PL97328301A PL183720B1 (pl) | 1996-02-15 | 1997-02-13 | Sposób i urządzenie do wykrywania powstających pożarów |
DE59700972T DE59700972D1 (de) | 1996-02-15 | 1997-02-13 | Verfahren und vorrichtung zum detektieren von entstehungsbränden |
HU9901013A HU220957B1 (hu) | 1996-02-15 | 1997-02-13 | Eljárás és készülék keletkező tüzek észlelésére |
EP97903277A EP0880765B1 (de) | 1996-02-15 | 1997-02-13 | Verfahren und vorrichtung zum detektieren von entstehungsbränden |
NO19983736A NO328850B1 (no) | 1996-02-15 | 1998-08-14 | Fremgangsmate og anordning for a detektere begynnende branner |
GR20000400764T GR3033075T3 (en) | 1996-02-15 | 2000-03-28 | Method and device for detecting incipient fires |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19605638.1 | 1996-02-15 | ||
DE19605638A DE19605638C5 (de) | 1996-02-15 | 1996-02-15 | Verfahren und Vorrichtung zum Detektieren von Entstehungsbränden |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997030427A1 true WO1997030427A1 (de) | 1997-08-21 |
Family
ID=7785507
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1997/000682 WO1997030427A1 (de) | 1996-02-15 | 1997-02-13 | Verfahren und vorrichtung zum detektieren von entstehungsbränden |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP0880765B1 (de) |
AT (1) | ATE188570T1 (de) |
CZ (1) | CZ287960B6 (de) |
DE (2) | DE19605638C5 (de) |
ES (1) | ES2143298T3 (de) |
GR (1) | GR3033075T3 (de) |
HU (1) | HU220957B1 (de) |
NO (1) | NO328850B1 (de) |
PL (1) | PL183720B1 (de) |
PT (1) | PT880765E (de) |
SK (1) | SK284815B6 (de) |
WO (1) | WO1997030427A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100406855C (zh) * | 2002-10-07 | 2008-07-30 | 瓦格纳报警和安全系统有限公司 | 确定流参数的装置以及运行所述装置的方法 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19730929C2 (de) * | 1997-07-18 | 1999-12-30 | Hekatron Gmbh | Feststellanlage zur Rauch- und/oder Brandgaserkennung |
DE10114729A1 (de) | 2001-03-22 | 2002-10-02 | Rittal Gmbh & Co Kg | Schaltschrank mit einer Rauchmeldeeinrichtung |
JP2006502392A (ja) | 2002-10-07 | 2006-01-19 | ワグナー アラーム− ウント ジッヒャルンクスシャテム ゲゼルシャフト ミット ベシュレンクテル ハフツング | 流体のフローパラメータ決定装置およびその動作方法 |
DE10358531A1 (de) * | 2003-12-13 | 2005-07-28 | Minimax Gmbh & Co. Kg | Vorrichtung und Verfahren zum Detektieren von Entstehungsbränden |
ES2265227B1 (es) * | 2004-06-29 | 2007-12-16 | Juan Valls Montava | Sistema de boquillas para instalaciones de deteccion de incendios por aspiracion. |
DE102010056394A1 (de) | 2010-12-28 | 2012-06-28 | Linde Aktiengesellschaft | Löscheinrichtung |
US11543057B2 (en) | 2019-07-09 | 2023-01-03 | Honeywell International Inc. | Universal pipe sleeve junction for an aspirated smoke detection system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3348107C2 (en) * | 1983-08-30 | 1988-01-21 | Securiton Ag, Zollikofen, Bern, Ch | Smoke suction system of a line smoke alarm |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3106822C2 (de) * | 1981-02-24 | 1982-12-23 | Hans 7614 Gengenbach Schneekloth | Verteilungsrohr |
DE29518042U1 (de) * | 1995-11-14 | 1996-01-25 | Wagner Alarm- und Sicherungssysteme GmbH, 30853 Langenhagen | Branddetektor |
-
1996
- 1996-02-15 DE DE19605638A patent/DE19605638C5/de not_active Expired - Fee Related
-
1997
- 1997-02-13 WO PCT/EP1997/000682 patent/WO1997030427A1/de active IP Right Grant
- 1997-02-13 AT AT97903277T patent/ATE188570T1/de active
- 1997-02-13 HU HU9901013A patent/HU220957B1/hu not_active IP Right Cessation
- 1997-02-13 EP EP97903277A patent/EP0880765B1/de not_active Expired - Lifetime
- 1997-02-13 PL PL97328301A patent/PL183720B1/pl not_active IP Right Cessation
- 1997-02-13 CZ CZ19982579A patent/CZ287960B6/cs not_active IP Right Cessation
- 1997-02-13 SK SK1100-98A patent/SK284815B6/sk not_active IP Right Cessation
- 1997-02-13 PT PT97903277T patent/PT880765E/pt unknown
- 1997-02-13 ES ES97903277T patent/ES2143298T3/es not_active Expired - Lifetime
- 1997-02-13 DE DE59700972T patent/DE59700972D1/de not_active Expired - Lifetime
-
1998
- 1998-08-14 NO NO19983736A patent/NO328850B1/no not_active IP Right Cessation
-
2000
- 2000-03-28 GR GR20000400764T patent/GR3033075T3/el unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3348107C2 (en) * | 1983-08-30 | 1988-01-21 | Securiton Ag, Zollikofen, Bern, Ch | Smoke suction system of a line smoke alarm |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100406855C (zh) * | 2002-10-07 | 2008-07-30 | 瓦格纳报警和安全系统有限公司 | 确定流参数的装置以及运行所述装置的方法 |
Also Published As
Publication number | Publication date |
---|---|
EP0880765A1 (de) | 1998-12-02 |
EP0880765B1 (de) | 2000-01-05 |
DE59700972D1 (de) | 2000-02-10 |
ATE188570T1 (de) | 2000-01-15 |
CZ257998A3 (cs) | 1999-01-13 |
PT880765E (pt) | 2000-06-30 |
GR3033075T3 (en) | 2000-08-31 |
DE19605638C5 (de) | 2004-10-14 |
ES2143298T3 (es) | 2000-05-01 |
SK284815B6 (sk) | 2005-12-01 |
NO328850B1 (no) | 2010-05-31 |
HUP9901013A3 (en) | 1999-11-29 |
CZ287960B6 (cs) | 2001-03-14 |
HU220957B1 (hu) | 2002-07-29 |
PL328301A1 (en) | 1999-01-18 |
DE19605638C1 (de) | 1997-06-12 |
PL183720B1 (pl) | 2002-07-31 |
HUP9901013A2 (hu) | 1999-07-28 |
NO983736L (no) | 1998-10-14 |
SK110098A3 (en) | 2000-02-14 |
NO983736D0 (no) | 1998-08-14 |
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