IL44507A - Ionization-type fire sensor - Google Patents
Ionization-type fire sensorInfo
- Publication number
- IL44507A IL44507A IL44507A IL4450774A IL44507A IL 44507 A IL44507 A IL 44507A IL 44507 A IL44507 A IL 44507A IL 4450774 A IL4450774 A IL 4450774A IL 44507 A IL44507 A IL 44507A
- Authority
- IL
- Israel
- Prior art keywords
- housing
- slit
- electrode
- sensor according
- sensor
- Prior art date
Links
- 239000000779 smoke Substances 0.000 claims description 8
- 230000005669 field effect Effects 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 6
- 239000000443 aerosol Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000012811 non-conductive material Substances 0.000 claims description 2
- 238000011156 evaluation Methods 0.000 claims 1
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims 1
- 239000003570 air Substances 0.000 abstract description 23
- 239000000428 dust Substances 0.000 abstract description 12
- 238000004140 cleaning Methods 0.000 abstract description 6
- 239000012080 ambient air Substances 0.000 abstract description 3
- -1 without clogging Substances 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 241000202252 Cerberus Species 0.000 description 1
- 102100025490 Slit homolog 1 protein Human genes 0.000 description 1
- 101710123186 Slit homolog 1 protein Proteins 0.000 description 1
- LXQXZNRPTYVCNG-YPZZEJLDSA-N americium-241 Chemical compound [241Am] LXQXZNRPTYVCNG-YPZZEJLDSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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
- 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
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)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH551973A CH551057A (de) | 1973-04-17 | 1973-04-17 | Ionisationsfeuermelder. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL44507A0 IL44507A0 (en) | 1974-06-30 |
| IL44507A true IL44507A (en) | 1977-07-31 |
Family
ID=4294978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL44507A IL44507A (en) | 1973-04-17 | 1974-03-27 | Ionization-type fire sensor |
Country Status (23)
| Country | Link |
|---|---|
| US (1) | US3908957A (de) |
| JP (1) | JPS49131798A (de) |
| BE (1) | BE813068A (de) |
| BR (1) | BR7403018D0 (de) |
| CA (1) | CA998783A (de) |
| CH (1) | CH551057A (de) |
| CS (1) | CS216229B2 (de) |
| DD (1) | DD111483A5 (de) |
| DE (1) | DE2415479B2 (de) |
| DK (1) | DK150415C (de) |
| ES (1) | ES424918A1 (de) |
| FI (1) | FI61768C (de) |
| FR (1) | FR2226714B1 (de) |
| GB (1) | GB1430891A (de) |
| HU (1) | HU175210B (de) |
| IL (1) | IL44507A (de) |
| IT (1) | IT1006402B (de) |
| NL (1) | NL177633C (de) |
| NO (1) | NO139581C (de) |
| PL (1) | PL90429B1 (de) |
| SE (1) | SE396491B (de) |
| YU (1) | YU35685B (de) |
| ZA (1) | ZA742077B (de) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2652970C3 (de) * | 1976-11-22 | 1979-09-06 | Hartwig Ing.(Grad.) 2409 Scharbeutz Beyersdorf | Ionisations-Brandmelder |
| US4150373A (en) * | 1977-01-27 | 1979-04-17 | Ried Jr Louis | Ionization particle detector |
| JPS6234399Y2 (de) * | 1980-03-31 | 1987-09-02 | ||
| CH648943A5 (de) * | 1980-05-09 | 1985-04-15 | Cerberus Ag | Rauchmelder. |
| US4439683A (en) * | 1981-02-11 | 1984-03-27 | General Signal Corporation | Ionization smoke detector |
| US4488044A (en) * | 1981-11-20 | 1984-12-11 | Pittway Corporation | Ionization chamber for smoke detector and the like |
| FR2523309A1 (fr) * | 1982-03-09 | 1983-09-16 | Hugon Emile | Nouveau detecteur de fumees capacitif a modules interchangeables |
| US4529976A (en) * | 1982-10-29 | 1985-07-16 | Frederick M. Jameson | Smoke detector with masking shield |
| JPH044316Y2 (de) * | 1985-09-30 | 1992-02-07 | ||
| FR2594953B1 (fr) * | 1986-02-25 | 1989-05-05 | Lewiner Jacques | Detecteur de fumee a chambre d'ionisation |
| JPS63239592A (ja) * | 1987-03-27 | 1988-10-05 | ホーチキ株式会社 | 光電式煙感知器 |
| EP0338218B1 (de) * | 1988-03-30 | 1993-09-15 | Cerberus Ag | Verfahren zur Brandfrüherkennung |
| US5327119A (en) * | 1989-12-22 | 1994-07-05 | Hochiki Kabushiki Kaisha | Ionizing smoke sensor |
| CH681932A5 (de) * | 1990-12-04 | 1993-06-15 | Cerberus Ag | |
| AU667102B2 (en) * | 1992-05-14 | 1996-03-07 | Vision Systems Limited | Gas sampling point for smoke/pollution detection systems |
| WO1993023735A1 (en) * | 1992-05-14 | 1993-11-25 | I.E.I. Pty. Ltd. | Gas sampling point for smoke/pollution detection systems |
| US5856784A (en) * | 1997-04-23 | 1999-01-05 | Pittway Corporation | Low profile ionization chamber |
| US6057774A (en) * | 1999-01-21 | 2000-05-02 | Brk Brands, Inc. | Smoke alarm with anti-dust screen |
| GB0213854D0 (en) * | 2002-06-15 | 2002-07-24 | Aea Technology Plc | Radioactive sources |
| US9013316B2 (en) * | 2011-07-28 | 2015-04-21 | Finsecur | Smoke detector |
| GB201219488D0 (en) | 2012-10-30 | 2012-12-12 | Univ Sussex | Apparatus for sensing ionic current and ionising radiation |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3319069A (en) * | 1964-08-27 | 1967-05-09 | American District Telegraph Co | Smoke detecting radiation sensitive fire alarm system |
| CH475614A (de) * | 1968-06-18 | 1969-07-15 | Cerberus Ag Werke Fuer Elektro | Ionisationsfeuermelder |
| GB1277091A (en) * | 1968-07-11 | 1972-06-07 | Nittan Co Ltd | Ionization type smoke detectors |
| CH491449A (de) * | 1969-05-19 | 1970-05-31 | Cerberus Ag | Rauchdetektoranordnung mit mindestens einer Rauchmesskammer |
| CH486082A (de) * | 1969-05-19 | 1970-02-15 | Cerberus Ag | Ionisationsfeuermelder |
| CH508251A (de) * | 1970-07-23 | 1971-05-31 | Cerberus Ag | Ionisationsfeuermelder |
| US3728706A (en) * | 1970-09-28 | 1973-04-17 | Gen Signal Corp | System for indicating aerosols in the atmosphere |
| BE793205A (fr) * | 1971-12-30 | 1973-04-16 | Preussag Ag Feuerschutz | Avertisseur d'incendie a ionisation |
-
1973
- 1973-04-17 CH CH551973A patent/CH551057A/de not_active IP Right Cessation
-
1974
- 1974-03-27 IL IL44507A patent/IL44507A/en unknown
- 1974-03-29 YU YU891/74A patent/YU35685B/xx unknown
- 1974-03-29 DE DE2415479A patent/DE2415479B2/de active Granted
- 1974-03-29 BE BE142655A patent/BE813068A/xx not_active IP Right Cessation
- 1974-04-01 FR FR7411564A patent/FR2226714B1/fr not_active Expired
- 1974-04-02 ZA ZA00742077A patent/ZA742077B/xx unknown
- 1974-04-03 JP JP49037056A patent/JPS49131798A/ja active Pending
- 1974-04-03 ES ES424918A patent/ES424918A1/es not_active Expired
- 1974-04-04 US US457841A patent/US3908957A/en not_active Expired - Lifetime
- 1974-04-08 NL NLAANVRAGE7404783,A patent/NL177633C/xx not_active IP Right Cessation
- 1974-04-09 IT IT7421073A patent/IT1006402B/it active
- 1974-04-10 SE SE7404871A patent/SE396491B/xx not_active IP Right Cessation
- 1974-04-11 CA CA197,527A patent/CA998783A/en not_active Expired
- 1974-04-11 FI FI1124/74A patent/FI61768C/fi active
- 1974-04-12 CS CS742663A patent/CS216229B2/cs unknown
- 1974-04-15 DD DD177896A patent/DD111483A5/xx unknown
- 1974-04-16 NO NO741357A patent/NO139581C/no unknown
- 1974-04-16 BR BR3018/74A patent/BR7403018D0/pt unknown
- 1974-04-16 PL PL1974170389A patent/PL90429B1/pl unknown
- 1974-04-16 DK DK208174A patent/DK150415C/da not_active IP Right Cessation
- 1974-04-17 HU HU74CE995A patent/HU175210B/hu unknown
- 1974-04-17 GB GB1684874A patent/GB1430891A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DK150415B (da) | 1987-02-23 |
| NO139581B (no) | 1978-12-27 |
| FI61768B (fi) | 1982-05-31 |
| BE813068A (fr) | 1974-07-15 |
| IL44507A0 (en) | 1974-06-30 |
| CH551057A (de) | 1974-06-28 |
| NO741357L (no) | 1974-10-18 |
| CA998783A (en) | 1976-10-19 |
| DK150415C (da) | 1987-07-13 |
| SE396491B (sv) | 1977-09-19 |
| NL7404783A (de) | 1974-10-21 |
| IT1006402B (it) | 1976-09-30 |
| YU35685B (en) | 1981-04-30 |
| DE2415479C3 (de) | 1987-12-03 |
| FI61768C (fi) | 1982-09-10 |
| FR2226714B1 (de) | 1979-03-16 |
| US3908957A (en) | 1975-09-30 |
| FR2226714A1 (de) | 1974-11-15 |
| BR7403018D0 (pt) | 1974-11-19 |
| HU175210B (hu) | 1980-06-28 |
| JPS49131798A (de) | 1974-12-17 |
| DE2415479B2 (de) | 1980-09-04 |
| PL90429B1 (de) | 1977-01-31 |
| NL177633C (nl) | 1985-10-16 |
| CS216229B2 (en) | 1982-10-29 |
| NL177633B (nl) | 1985-05-17 |
| NO139581C (no) | 1979-04-04 |
| AU6753274A (en) | 1975-10-09 |
| ES424918A1 (es) | 1976-05-16 |
| DD111483A5 (de) | 1975-02-12 |
| GB1430891A (en) | 1976-04-07 |
| ZA742077B (en) | 1975-04-30 |
| YU89174A (en) | 1980-09-25 |
| DE2415479A1 (de) | 1974-11-14 |
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