CA2590840A1 - Fluid compound for function testing smoke detectors and its use - Google Patents
Fluid compound for function testing smoke detectors and its use Download PDFInfo
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- CA2590840A1 CA2590840A1 CA002590840A CA2590840A CA2590840A1 CA 2590840 A1 CA2590840 A1 CA 2590840A1 CA 002590840 A CA002590840 A CA 002590840A CA 2590840 A CA2590840 A CA 2590840A CA 2590840 A1 CA2590840 A1 CA 2590840A1
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- Prior art keywords
- fluid compound
- compound
- weight
- aerosol
- propellant
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- 239000012530 fluid Substances 0.000 title claims abstract description 39
- 239000000779 smoke Substances 0.000 title claims abstract description 24
- 150000001875 compounds Chemical class 0.000 title claims description 56
- 239000007789 gas Substances 0.000 claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 239000000443 aerosol Substances 0.000 claims abstract description 25
- 239000003380 propellant Substances 0.000 claims abstract description 18
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 16
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000007921 spray Substances 0.000 claims abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 15
- 239000004808 2-ethylhexylester Substances 0.000 claims abstract description 12
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims abstract description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000005507 spraying Methods 0.000 claims abstract description 9
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 8
- -1 sebacic acid diester Chemical class 0.000 claims abstract description 7
- 239000004264 Petrolatum Substances 0.000 claims abstract description 6
- CXMXRPHRNRROMY-UHFFFAOYSA-N n-Decanedioic acid Natural products OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229940066842 petrolatum Drugs 0.000 claims abstract description 6
- 235000019271 petrolatum Nutrition 0.000 claims abstract description 6
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 125000004185 ester group Chemical group 0.000 claims abstract description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 5
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 9
- 239000000470 constituent Substances 0.000 claims description 7
- 229930195733 hydrocarbon Natural products 0.000 claims description 7
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- NKDDWNXOKDWJAK-UHFFFAOYSA-N dimethoxymethane Chemical compound COCOC NKDDWNXOKDWJAK-UHFFFAOYSA-N 0.000 claims description 6
- 235000019441 ethanol Nutrition 0.000 claims description 6
- 150000002430 hydrocarbons Chemical class 0.000 claims description 6
- GDOPTJXRTPNYNR-UHFFFAOYSA-N methylcyclopentane Chemical compound CC1CCCC1 GDOPTJXRTPNYNR-UHFFFAOYSA-N 0.000 claims description 6
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000009835 boiling Methods 0.000 claims description 4
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 3
- SPEUIVXLLWOEMJ-UHFFFAOYSA-N acetaldehyde dimethyl acetal Natural products COC(C)OC SPEUIVXLLWOEMJ-UHFFFAOYSA-N 0.000 claims description 3
- 150000001241 acetals Chemical class 0.000 claims description 3
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 claims description 3
- 150000001298 alcohols Chemical class 0.000 claims description 3
- KLKFAASOGCDTDT-UHFFFAOYSA-N ethoxymethoxyethane Chemical compound CCOCOCC KLKFAASOGCDTDT-UHFFFAOYSA-N 0.000 claims description 3
- 150000002576 ketones Chemical class 0.000 claims description 3
- GKASDNZWUGIAMG-UHFFFAOYSA-N triethyl orthoformate Chemical compound CCOC(OCC)OCC GKASDNZWUGIAMG-UHFFFAOYSA-N 0.000 claims description 3
- 238000011056 performance test Methods 0.000 abstract 2
- 239000000306 component Substances 0.000 description 17
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 4
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 description 2
- CJTNLEQLKKYLFO-UHFFFAOYSA-N 1-butoxyethanol Chemical compound CCCCOC(C)O CJTNLEQLKKYLFO-UHFFFAOYSA-N 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229960004756 ethanol Drugs 0.000 description 2
- 239000001282 iso-butane Substances 0.000 description 2
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241000202252 Cerberus Species 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- XOBKSJJDNFUZPF-UHFFFAOYSA-N Methoxyethane Chemical compound CCOC XOBKSJJDNFUZPF-UHFFFAOYSA-N 0.000 description 1
- 208000036366 Sensation of pressure Diseases 0.000 description 1
- 229920002359 Tetronic® Polymers 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229940098458 powder spray Drugs 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/12—Checking intermittently signalling or alarm systems
- G08B29/14—Checking intermittently signalling or alarm systems checking the detection circuits
- G08B29/145—Checking intermittently signalling or alarm systems checking the detection circuits of fire detection circuits
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/30—Materials not provided for elsewhere for aerosols
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dispersion Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
Disclosed is a fluid mixture for performing performance tests on smoke detectors. Said fluid mixture comprises a propellant and at least one aerosol component that is admixed to said propellant. The inventive fluid mixture is formed by a mixture which is liquid at ambient temperature and atmospheric pressure and contains a spray as a propellant. The aerosol component is composed of at least one of the substances from the group comprising sebacic acid-bis-2-ethyl-hexyl ester, sebacic acid diester with various ester groups, liquid petrolatum, phthalic acid-dibutyl ester, phthalic acid-bis-2-ethyl-hexyl ester, and triethylene glycol. In order to use the fluid mixture for performing a performance test on smoke detectors, the pressure for spraying the fluid mixture is generated with the aid of gas pressure, i.e. using carbon dioxide, dimethyl ether, or nitrogen, preferably carbon dioxide.
Description
PCT/EP2005/056758 / 2004P20804w0 Description Fluid compound for function testing smoke detectors and its use The invention relates to a fluid compound for function testing smoke detectors that consists of a propellant and at least one aerosol component admixed with said propellant.
Smoke detectors are used to detect the presence of smoke particles or aerosols that can develop during a fire. Besides ionization smoke detectors, commercially available smoke detectors include, in particular, scattered-light smoke detectors that measure the light scattered by smoke particles or aerosols in an optical measuring chamber.
Smoke detectors and smoke detector systems usually have an operating life of several years and, to insure their correct functioning, need to undergo periodic function testing generally performed by applying a test gas simulating an aerosol to the measuring chamber. Propellants having a high molecular weight have, for example, been used that were able to simulate an aerosol without any additional substances. A
propellant compound comprising components having a suitable boiling point, between -20 C and +10 C, proved to be highly effective and usable in any type of detector. The most widely used propellants used to be completely halogenized hydrocarbons, which also met the requirement for them to be non-combustible and non-poisonous. One of said gas compounds is described in CH-A-501 284.
However, the Treaty of Montreal concluded in September 1987 banned the use of completely halogenized hydrocarbons in all countries starting in 1995 owing to their harmful effect on the AMENDED SHEET
la ozone layer, meaning that use of the aforementioned propellants has also had to be discontinued.
EP 0663432 B1 relates to a gas compound for forming aerosols for function testing smoke detectors. Said gas compound contains an admixed aerosol-forming component that consists of at least one of the substances sebacic acid-bis-2-ethyl-hexyl ester, sebacic acid diester with various ester groups, liquid petrolatum, phthalic acid-dibutyl ester, phthalic acid-bis-2-ethyl-hexyl ester, butyloxyethanol, triethylene glycol, and triethylene glycol-diester.
DE 39 41 572 Al relates to a solvent compound, which can be sprayed by means of compressed gases or mechanically operated spraying devices and is free from liquefied propellants, that has a water content of 5 to 30 percent by weight and also contains 0.5 to 45 percent by weight lower alkanes and 50 to 94.5 percent by weight lower alcohols, with the ratio of the constituents by weight of water to alkanes being from 0.1:1 to 10:1. The invention relates also to cosmetic agents for treating the skin and the hair that contain said solvent compound.
The document "Database WPI Section Ch, Week 197803 Derwent Publications Ltd., London, GB; Class A96, AN 1978-05667A
XP002329037 & JP 52 145513 A (Toyo Aerosol Kogyo KK) December 3, 1977 (1977-12-03)" describes a powder spray unit. By mixing a fine powder into a halogen hydrocarbon solution that boils at <70 Celsius but is liquid at room temperature. The fine powder can contain a protronic or tetronic emulgator. The spray unit is used for applying the powder to the skin.
Described in EP-A-0443 912 is a gas compound that does not harm AMENDED SHEET
Smoke detectors are used to detect the presence of smoke particles or aerosols that can develop during a fire. Besides ionization smoke detectors, commercially available smoke detectors include, in particular, scattered-light smoke detectors that measure the light scattered by smoke particles or aerosols in an optical measuring chamber.
Smoke detectors and smoke detector systems usually have an operating life of several years and, to insure their correct functioning, need to undergo periodic function testing generally performed by applying a test gas simulating an aerosol to the measuring chamber. Propellants having a high molecular weight have, for example, been used that were able to simulate an aerosol without any additional substances. A
propellant compound comprising components having a suitable boiling point, between -20 C and +10 C, proved to be highly effective and usable in any type of detector. The most widely used propellants used to be completely halogenized hydrocarbons, which also met the requirement for them to be non-combustible and non-poisonous. One of said gas compounds is described in CH-A-501 284.
However, the Treaty of Montreal concluded in September 1987 banned the use of completely halogenized hydrocarbons in all countries starting in 1995 owing to their harmful effect on the AMENDED SHEET
la ozone layer, meaning that use of the aforementioned propellants has also had to be discontinued.
EP 0663432 B1 relates to a gas compound for forming aerosols for function testing smoke detectors. Said gas compound contains an admixed aerosol-forming component that consists of at least one of the substances sebacic acid-bis-2-ethyl-hexyl ester, sebacic acid diester with various ester groups, liquid petrolatum, phthalic acid-dibutyl ester, phthalic acid-bis-2-ethyl-hexyl ester, butyloxyethanol, triethylene glycol, and triethylene glycol-diester.
DE 39 41 572 Al relates to a solvent compound, which can be sprayed by means of compressed gases or mechanically operated spraying devices and is free from liquefied propellants, that has a water content of 5 to 30 percent by weight and also contains 0.5 to 45 percent by weight lower alkanes and 50 to 94.5 percent by weight lower alcohols, with the ratio of the constituents by weight of water to alkanes being from 0.1:1 to 10:1. The invention relates also to cosmetic agents for treating the skin and the hair that contain said solvent compound.
The document "Database WPI Section Ch, Week 197803 Derwent Publications Ltd., London, GB; Class A96, AN 1978-05667A
XP002329037 & JP 52 145513 A (Toyo Aerosol Kogyo KK) December 3, 1977 (1977-12-03)" describes a powder spray unit. By mixing a fine powder into a halogen hydrocarbon solution that boils at <70 Celsius but is liquid at room temperature. The fine powder can contain a protronic or tetronic emulgator. The spray unit is used for applying the powder to the skin.
Described in EP-A-0443 912 is a gas compound that does not harm AMENDED SHEET
the ozone layer and contains a dimethyl ether constituent and a 1,1,1,2-tetrafluorethane constituent. Although said compound achieves good results when used in refrigerating equipment and as a propellant, it is not very suitable for the specific application as a test gas for smoke detectors as it contains no aerosols. And a consequence of said property is that water droplets can form through cooling of the air, as a result of which an alarm may be triggered.
AMENDED SHEET
2a Described in EP-B-0 663 432 is a gas compound of the type cited in the introduction that consists of 80 to 60 percent by weight of 1,1,1,2-tetrafluorethane and 20 to 40 percent by weight of a pressure-reducing gas consisting of at least one of the sub-stances n-butane, isobutane, a mixture of propane/n-butane, a mixture of propane/isobutane, dimethyl ether (CH3-O-CH3), me-thylal (CH3-0-CH2-0-CH3), and methyl ethyl ether (CH3-O-CHZ-CH2) Said gas compound contains an admixed aerosol-forming component that consists of at least one of the substances sebacic acid-bis-2-ethyl-hexyl ester, sebacic acid diester with various es-ter groups, liquid petrolatum, phthalic acid-dibutyl ester, phthalic acid-bis-2-ethyl-hexyl ester, butyloxyethanol, triethylene glycol, and triethylene glycol-diester and is ad-mixed with the gas compound at a ratio of max. 2 percent by weight.
Although the gas compound described in the cited EP-B has for years proved an excellent means for function testing smoke de-tectors, it contains a fluoric substance that has recently been banned in Denmark and is likely also to be banried in other countries.
What is to now be provided by the invention is a fluid compound for function testing smoke detectors that has properties as good as the gas compound described in EP-B-O 663 432 but con-tains no fluoric substances.
Said object is inventively achieved by forming the fluid com-pound from a mixture that is liquid at room temperature and am-bient pressure and which contains a spray liquid as the propel-lant. Said spray liquid preferably contains at least one compo-nent that forms fine droplets during spraying.
A first preferred embodiment of the inventive fluid compound is characterized in that the spray liquid contains additional com-ponents for optimizing the droplet size and/or raising the boiling point.
According to a second preferred embodiment, the at least one component of the spray liquid contains at least one of the fol-lowing substances: Ketones, acetals, alcohols, water, hydrocar-bons and/or combinations thereof, particularly methylal, for-maldehyde diethyl acetal, n-hexane, a hexane-isomer compound, a hexane-isomer compound + methylcyclopentane, ethanol, propyl alcohol, isopropyl alcohol, acetaldehyde-diethyl acetal, ortho-formic acid triethyl ester, acetone, and methyl acetate.
A third preferred embodiment of the inventive fluid compound is characterized in that the at least one aerosol component con-sists of at least one of the substances sebacic acid-bis-2-ethyl-hexyl ester, sebacic acid diester with various ester groups, liquid petrolatum, phthalic acid-dibutyl ester, phthalic acid-bis-2-ethyl-hexyl ester, and triethylene glycol.
AMENDED SHEET
2a Described in EP-B-0 663 432 is a gas compound of the type cited in the introduction that consists of 80 to 60 percent by weight of 1,1,1,2-tetrafluorethane and 20 to 40 percent by weight of a pressure-reducing gas consisting of at least one of the sub-stances n-butane, isobutane, a mixture of propane/n-butane, a mixture of propane/isobutane, dimethyl ether (CH3-O-CH3), me-thylal (CH3-0-CH2-0-CH3), and methyl ethyl ether (CH3-O-CHZ-CH2) Said gas compound contains an admixed aerosol-forming component that consists of at least one of the substances sebacic acid-bis-2-ethyl-hexyl ester, sebacic acid diester with various es-ter groups, liquid petrolatum, phthalic acid-dibutyl ester, phthalic acid-bis-2-ethyl-hexyl ester, butyloxyethanol, triethylene glycol, and triethylene glycol-diester and is ad-mixed with the gas compound at a ratio of max. 2 percent by weight.
Although the gas compound described in the cited EP-B has for years proved an excellent means for function testing smoke de-tectors, it contains a fluoric substance that has recently been banned in Denmark and is likely also to be banried in other countries.
What is to now be provided by the invention is a fluid compound for function testing smoke detectors that has properties as good as the gas compound described in EP-B-O 663 432 but con-tains no fluoric substances.
Said object is inventively achieved by forming the fluid com-pound from a mixture that is liquid at room temperature and am-bient pressure and which contains a spray liquid as the propel-lant. Said spray liquid preferably contains at least one compo-nent that forms fine droplets during spraying.
A first preferred embodiment of the inventive fluid compound is characterized in that the spray liquid contains additional com-ponents for optimizing the droplet size and/or raising the boiling point.
According to a second preferred embodiment, the at least one component of the spray liquid contains at least one of the fol-lowing substances: Ketones, acetals, alcohols, water, hydrocar-bons and/or combinations thereof, particularly methylal, for-maldehyde diethyl acetal, n-hexane, a hexane-isomer compound, a hexane-isomer compound + methylcyclopentane, ethanol, propyl alcohol, isopropyl alcohol, acetaldehyde-diethyl acetal, ortho-formic acid triethyl ester, acetone, and methyl acetate.
A third preferred embodiment of the inventive fluid compound is characterized in that the at least one aerosol component con-sists of at least one of the substances sebacic acid-bis-2-ethyl-hexyl ester, sebacic acid diester with various ester groups, liquid petrolatum, phthalic acid-dibutyl ester, phthalic acid-bis-2-ethyl-hexyl ester, and triethylene glycol.
Alongside the new requirement to dispense with fluoric sub-stances, gas compounds for function testing smoke detectors have hitherto been subject to the requirements for the gas com-pound to be a liquid between -10 C and +50 C and non-combus-tible and to have a steam pressure above atmospheric of <- 11 bar at +50 C (specifications for spray canisters). As basically no gas compounds exist that meet all said requirements, non-combustibility has been dispensed with in the inventive fluid compound. The inventive fluid compound is a combustible liquid sprayed by means of an atomizer, with the pressure for spraying the mixture being produced by means of gas pressure or a small manually or electrically operable pump.
The invention relates further to the use of the cited fluid compound. Said use is characterized in that the pressure for spraying the fluid compound is produced by means of gas pres-sure. Said gas pressure is produced by means of carbon dioxide, dimethyl ether, or nitrogen, preferably by means of carbon di-oxide.
The inventive fluid compound for function testing smoke detec-tors is described in more detail below with the aid of exem-plary embodiments.
The main condition attaching to the fluid compound is not to harm the ozone layer. If, as is customary, a liquid gas is used as the fluid compound, then only chlorine-free gases can be considered as propellants because chlorine is known to degrade the ozone layer. Nor may the fluid compound contain any non-completely fluorinated hydrocarbons because fluoric substances are banned, at least in Denmark. As the available choice of possible propellants is consequently severely limited, a spray liquid is used instead of a propellant.
The fluid compound is therefore at room temperature and ambient pressure a liquid mixture containing at least one spray liquid and at least one aerosol component. Said mixture is sprayed in the form of a mist consisting of fine droplets; the droplets evaporate and the aerosol component remains as a fine aerosol that tests the smoke detector. The pressure for spraying the mixture is produced by means of a compressed gas or a small manually or electrically operable pump. The gas pressure is produced by means carbon dioxide, dimethyl ether, or nitrogen, with carbon dioxide being preferred.
The spray liquid contains at least one component that forms very fine droplets during spraying and can also contain further components for optimizing the droplet size and/or raising the boiling point. One or more of the following substances are pro-vided as components of the spray liquid: Ketones, acetals, al-cohols, water, hydrocarbons and/or combinations thereof, par-ticularly methylal (= formaldehyde dimethyl acetal), formalde-hyde diethyl acetal, n-hexane, a hexane-isomer compound, a hex-ane-isomer compound + methylcyclopentane, ethanol, propyl alco-hol, isopropyl alcohol, acetaldehyde-diethyl acetal, orthofor-mic acid triethyl ester, acetone, and methyl acetate.
The at least one aerosol component of the fluid compound con-tains at least one of the following substances:
= Sebacic acid-bis-2-ethyl-hexyl ester = Sebacic acid diester with various ester groups = Liquid petrolatum = Phthalic acid-dibutyl ester = Phthalic acid-bis-2-ethyl-hexyl ester = Triethylene glycol with the total constituent portion of all aerosol components being <- 3 percent by weight. The constituent portion of the aerosol components is generally <- 1 percent by weight; in a preferred embodiment of the fluid compound it is between 0.01 percent by weight and 0.5 percent by weight.
For function testing smoke detectors, a customary test-gas can-ister is filled with the fluid compound together with a com-pressed gas, the carbon dioxide, dimethyl ether, or nitrogen.
Said canister is then employed in a type RE6 detector test de-vice from Siemens Schweiz AG, Building Technologies Group (for-merly Cerberus AG). For the purpose of the testing operation the detector tester is pushed over the detector. The test-gas canister's valve is actuated by pressing the detector tester against the detector, and the fluid compound will, due to the gas pressure, be sprayed into the detector and flow into its measuring chamber, thereby simulating the presence of aerosols caused by a fire.
Practical trials with the inventive fluid compound for function testing ionization smoke detectors and optical smoke detectors have produced the following results:
= The novel fluid compound produces a relatively long-lived aerosol.
= The alerting time depends substantially on droplet size so that as small as possible droplets should be produced.
= A mixture of methylal and n-hexane with a weight ratio of 1:0.5 with a 0.2% aerosol component proved to be particu-larly well suited.
The invention relates further to the use of the cited fluid compound. Said use is characterized in that the pressure for spraying the fluid compound is produced by means of gas pres-sure. Said gas pressure is produced by means of carbon dioxide, dimethyl ether, or nitrogen, preferably by means of carbon di-oxide.
The inventive fluid compound for function testing smoke detec-tors is described in more detail below with the aid of exem-plary embodiments.
The main condition attaching to the fluid compound is not to harm the ozone layer. If, as is customary, a liquid gas is used as the fluid compound, then only chlorine-free gases can be considered as propellants because chlorine is known to degrade the ozone layer. Nor may the fluid compound contain any non-completely fluorinated hydrocarbons because fluoric substances are banned, at least in Denmark. As the available choice of possible propellants is consequently severely limited, a spray liquid is used instead of a propellant.
The fluid compound is therefore at room temperature and ambient pressure a liquid mixture containing at least one spray liquid and at least one aerosol component. Said mixture is sprayed in the form of a mist consisting of fine droplets; the droplets evaporate and the aerosol component remains as a fine aerosol that tests the smoke detector. The pressure for spraying the mixture is produced by means of a compressed gas or a small manually or electrically operable pump. The gas pressure is produced by means carbon dioxide, dimethyl ether, or nitrogen, with carbon dioxide being preferred.
The spray liquid contains at least one component that forms very fine droplets during spraying and can also contain further components for optimizing the droplet size and/or raising the boiling point. One or more of the following substances are pro-vided as components of the spray liquid: Ketones, acetals, al-cohols, water, hydrocarbons and/or combinations thereof, par-ticularly methylal (= formaldehyde dimethyl acetal), formalde-hyde diethyl acetal, n-hexane, a hexane-isomer compound, a hex-ane-isomer compound + methylcyclopentane, ethanol, propyl alco-hol, isopropyl alcohol, acetaldehyde-diethyl acetal, orthofor-mic acid triethyl ester, acetone, and methyl acetate.
The at least one aerosol component of the fluid compound con-tains at least one of the following substances:
= Sebacic acid-bis-2-ethyl-hexyl ester = Sebacic acid diester with various ester groups = Liquid petrolatum = Phthalic acid-dibutyl ester = Phthalic acid-bis-2-ethyl-hexyl ester = Triethylene glycol with the total constituent portion of all aerosol components being <- 3 percent by weight. The constituent portion of the aerosol components is generally <- 1 percent by weight; in a preferred embodiment of the fluid compound it is between 0.01 percent by weight and 0.5 percent by weight.
For function testing smoke detectors, a customary test-gas can-ister is filled with the fluid compound together with a com-pressed gas, the carbon dioxide, dimethyl ether, or nitrogen.
Said canister is then employed in a type RE6 detector test de-vice from Siemens Schweiz AG, Building Technologies Group (for-merly Cerberus AG). For the purpose of the testing operation the detector tester is pushed over the detector. The test-gas canister's valve is actuated by pressing the detector tester against the detector, and the fluid compound will, due to the gas pressure, be sprayed into the detector and flow into its measuring chamber, thereby simulating the presence of aerosols caused by a fire.
Practical trials with the inventive fluid compound for function testing ionization smoke detectors and optical smoke detectors have produced the following results:
= The novel fluid compound produces a relatively long-lived aerosol.
= The alerting time depends substantially on droplet size so that as small as possible droplets should be produced.
= A mixture of methylal and n-hexane with a weight ratio of 1:0.5 with a 0.2% aerosol component proved to be particu-larly well suited.
Claims (10)
1. A fluid compound for function testing smoke detectors that consists of a propellant and at least one aerosol component admixed with said propellant, characterized in that the fluid compound is formed from a mixture that is liquid at room temperature and ambient pressure and contains a spray liquid as the propellant.
2. The fluid compound as claimed in claim 1 characterized in that the spray liquid contains at least one component that forms fine droplets during spraying.
3. The fluid compound as claimed in claim 2 characterized in that the spray liquid contains additional components for optimizing the droplet size and/or raising the boiling point.
4. The fluid compound as claimed in claim 2 or 3 characterized in that the at least one component of the spray liquid con-tains at least one of the following substances: Ketones, acetals, alcohols, water, hydrocarbons and/or combinations thereof, particularly methylal, formaldehyde diethyl acetal, n-hexane, a hexane-isomer compound, a hexane-isomer compound + methylcyclopentane, ethanol, propyl alcohol, isopropyl alcohol, acetaldehyde-diethyl acetal, orthoformic acid triethyl ester, acetone, and methyl acetate.
5. The fluid compound as claimed in one of claims 1 to 4 char-acterized in that the at least one aerosol component con-sists of at least one of the substances sebacic acid-bis-2-ethyl-hexyl ester, sebacic acid diester with various ester groups, liquid petrolatum, phthalic acid-dibutyl ester, phthalic acid-bis-2-ethyl-hexyl ester, and triethylene gly-col.
6. The fluid compound as claimed in claim 5 characterized in that the constituent portion of all aerosol components does not exceed 3 percent by weight.
7. The fluid compound as claimed in claim 6 characterized in that the constituent portion of all aerosol components does not exceed 1 percent by weight and is preferably between 0.01 percent by weight and 0.5 percent by weight.
8. The fluid compound as claimed in one of claims 1 to 7 char-acterized by a mixture of methylal and n-hexane with a weight ratio of 1:0.5 with an aerosol component of 0.2 per-cent by weight.
9. A use of the fluid compound as claimed in one of claims 1 to 8 characterized in that the pressure for spraying the fluid compound is produced by means of gas pressure.
10.The use of the fluid compound as claimed in claim 9 charac-terized in that the gas pressure is produced by means of carbon dioxide, dimethyl ether, or nitrogen, preferably by means of carbon dioxide.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04029511.5 | 2004-12-14 | ||
| EP04029511A EP1672605A1 (en) | 2004-12-14 | 2004-12-14 | Fluid mixture for testing the operation of a smoke detector |
| EP04030762.1 | 2004-12-24 | ||
| EP04030762 | 2004-12-24 | ||
| PCT/EP2005/056758 WO2006064009A1 (en) | 2004-12-14 | 2005-12-13 | Fluid mixture for performing performance tests on smoke detectors, and use thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2590840A1 true CA2590840A1 (en) | 2006-06-22 |
Family
ID=35841760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002590840A Abandoned CA2590840A1 (en) | 2004-12-14 | 2005-12-13 | Fluid compound for function testing smoke detectors and its use |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2590840A1 (en) |
| WO (1) | WO2006064009A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3207386A (en) * | 1962-06-01 | 1965-09-21 | Aerosol Tech Inc | Aerosol dispenser producing non-flammable spray with fluid system having a flammable propellant |
| CH501284A (en) * | 1969-11-14 | 1970-12-31 | Cerberus Ag | Device for testing the operational readiness of smoke alarms |
| JPS52145513A (en) * | 1976-05-28 | 1977-12-03 | Toyo Eazooru Kougiyou Kk | Nonnaerosol type powder spray preparation |
| DE3941572A1 (en) * | 1989-12-16 | 1991-06-20 | Wella Ag | SOLVENT MIXTURE AND COSMETIC AGENT CONTAINING A CONTENT OF THIS SOLVENT MIXTURE |
| FR2658508B1 (en) * | 1990-02-20 | 1993-09-24 | Atochem | MIXTURES OF DIMETHYLETHER AND 1,1,1,2-TETRAFLUOROETHANE AND THEIR APPLICATIONS AS REFRIGERANTS, AS AEROSOL PUSHERS OR AS PLASTIC FOAM EXPANDING AGENTS. |
| US5139699A (en) * | 1990-06-27 | 1992-08-18 | Leon Cooper | Spray formulation for the testing of smoke detectors |
| CH686806A5 (en) * | 1994-01-12 | 1996-06-28 | Cerberus Ag | Gas mixture to Funktionspruefung of smoke detectors. |
-
2005
- 2005-12-13 CA CA002590840A patent/CA2590840A1/en not_active Abandoned
- 2005-12-13 WO PCT/EP2005/056758 patent/WO2006064009A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006064009A1 (en) | 2006-06-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |