EP2181809A1 - Brennkraftbetriebenes Setzgerät - Google Patents
Brennkraftbetriebenes Setzgerät Download PDFInfo
- Publication number
- EP2181809A1 EP2181809A1 EP09171918A EP09171918A EP2181809A1 EP 2181809 A1 EP2181809 A1 EP 2181809A1 EP 09171918 A EP09171918 A EP 09171918A EP 09171918 A EP09171918 A EP 09171918A EP 2181809 A1 EP2181809 A1 EP 2181809A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- combustion chamber
- resistance element
- setting tool
- ignition device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 claims abstract description 23
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 101100242909 Streptococcus pneumoniae (strain ATCC BAA-255 / R6) pbpA gene Proteins 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 1
- 229910000570 Cupronickel Inorganic materials 0.000 abstract 1
- 239000011651 chromium Substances 0.000 abstract 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 abstract 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- -1 womanium Chemical compound 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 5
- 230000005670 electromagnetic radiation Effects 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- 230000015654 memory Effects 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C1/00—Hand-held nailing tools; Nail feeding devices
- B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
Definitions
- the present invention relates to a combustion-powered setting tool, the type mentioned in the preamble of claim 1.
- Such setting devices have a combustion chamber in which a portion of liquefied petroleum gas or another vaporizable fuel with an oxidizing agent such. B. ambient air, is combustible.
- a setting piston displaceably guided in a piston guide is driven in order to drive a fastening element into an article.
- a combustion-powered setting tool which has control electronics for controlling the ignition and the fuel injection.
- the setting tool has a z. B. formed as a conventional spark plug igniter on.
- a disadvantage of this solution is that on the one hand the electronics for generating the high voltage is expensive and expensive to manufacture and on the other hand a strong electromagnetic radiation (EMC) is generated, which influence the control electronics and errors or malfunctions in the electrical system of the setting tool can lead.
- EMC electromagnetic radiation
- Processors, E-PROMS and / or memory can be set in undefined states. There is also the danger that the memories could be overwritten or deleted.
- a common cause of failure in such combustion-powered setting tools is a short circuit between electrodes of the spark plug. The short circuit can be done by a conductive dirt layer, which is built up, inter alia, by moisture from the combustion residues. Further, oil added to the fuel gas as a lubricant may accumulate on the electrodes and form a bridge preventing generation of a spark.
- the object of the present invention is to provide a combustion-powered setting tool of the aforementioned type which avoids the disadvantages, which is insensitive to contamination, which ignites reliably and which can be produced inexpensively.
- the ignition device has a resistance element.
- the resistance element is z. B. formed as a resistance wire or resistor track and is after triggering the setting device, z. B. via a trigger switch, energized by an electronic control system, whereby it heats up and ignites the air-fuel gas mixture contained in the combustion chamber within about 10 - 100 ms after triggering.
- the temperature of the resistance element reaches at least approximately 500 ° C.
- EMC electrical disturbances
- the resistance element is designed as a helical wire, whereby a large contact surface between the hot filament and the gas mixture to be ignited is available.
- the relatively long wire can be accommodated in a relatively small space.
- the resistance element contains at least one metal of the group Cu, Ni, Wo, Cr, Mn, C, Si.
- the resistance element consists of an alloy of one or more of these metals.
- the resistance element has an electrical resistance of 0.5 to 10 ohms / mm [exp2].
- the ignition current for the ignition device generated by a control unit is between 0.1 and 50 amperes.
- the hand-held, combustion-powered setting tool 10 has a one-piece or multi-part housing, generally designated 11, in which a drive 12 operable by means of an air-fuel mixture is arranged.
- a fastener such as a nail, bolts, etc. are driven into a workpiece.
- the fasteners may, for. B. be stored in a magazine on setting tool 10.
- the drive includes u. a. a combustion chamber 15 and a guide cylinder 13, in which a setting piston 14 is arranged axially displaceable.
- the combustion chamber 15 is in the illustrated initial state circumferentially by a combustion chamber sleeve 28, and axially at a first end of the setting piston 14 and an annular combustion chamber wall 29 and at a second end of a combustion chamber rear wall 30 which is formed as a cylinder head limited.
- An arranged in the combustion chamber 15 and driven by a motor 17 fan 16 serves both to generate a turbulent flow regime of a located in the closed combustion chamber 15 air-fuel mixture and the rinsing of the open combustion chamber 15 with fresh air after the setting process.
- the motor 17 is mounted on the combustion chamber rear wall 30, which acts as a closure for the axially displaceable combustion chamber sleeve 28.
- a trigger switch 19 is arranged, via which an arranged in the combustion chamber 15 ignition device 26 mediated via an electronic control unit 25 is triggered when the setting tool 10 pressed against a workpiece while a switching means 24 in the mouth region 27 of the setting device 10th is activated.
- the ignition device 26 is electrically connected to the control electronics 25 via a line 41.
- the ignition device 26 has a designed as a helical wire resistance element 36 which is disposed between a first electrode 31 and a second electrode 32 of the ignition device 26 and for igniting an air-fuel mixture in the combustion chamber via a supplied by the control electronics 25 Zündstrom is heated.
- the resistance element 36 has an electrical resistance of 0.5 to 10 ohms / mm [exp2] and includes a metal of the group Cu, Ni, Where, Cr, Mn, C, Si.
- the electrodes 31, 32 are embedded in an insulator body 33 as a carrier element.
- the setting tool 10 can be operated with a fuel gas or with a vaporizable liquid fuel, the / in a fuel reservoir 20, such as. B. a fuel can, is provided.
- the fuel reservoir 20 is connected via a fuel line 22 to a fuel inlet 23 in the combustion chamber 15.
- a metering device 21 such. B. a metering valve, interposed, via which a control of the fuel supply to the combustion chamber 15 takes place.
- an electrical energy source 40 such. As an accumulator, available.
- the ignition device 26 and the metering device 21 are controlled electronically via the control electronics designated overall by 25.
- the control electronics 25 has z. B. one or more microprocessors for data processing and control of the various electrical device functions and is connected via an electrical supply line 44 to the electrical energy source 40.
- a generated by the control electronics 25 ignition current for the ignition device 26 is preferably between 0.1 and 50 amps.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008043228A DE102008043228A1 (de) | 2008-10-28 | 2008-10-28 | Brennkraftbetriebenes Setzgerät |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2181809A1 true EP2181809A1 (de) | 2010-05-05 |
Family
ID=41692900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09171918A Withdrawn EP2181809A1 (de) | 2008-10-28 | 2009-10-01 | Brennkraftbetriebenes Setzgerät |
Country Status (6)
Country | Link |
---|---|
US (1) | US20100102103A1 (zh) |
EP (1) | EP2181809A1 (zh) |
JP (1) | JP2010105152A (zh) |
CN (1) | CN101722503A (zh) |
DE (1) | DE102008043228A1 (zh) |
TW (1) | TW201031501A (zh) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009041824A1 (de) * | 2009-09-18 | 2011-03-24 | Hilti Aktiengesellschaft | Vorrichtung zur Übertragung von Energie auf ein Befestigungselement |
DE102009041828A1 (de) * | 2009-09-18 | 2011-03-24 | Hilti Aktiengesellschaft | Vorrichtung zur Übertragung von Energie auf ein Befestigungselement |
DE102011077832A1 (de) * | 2011-06-20 | 2012-12-20 | Hilti Aktiengesellschaft | Treibmittelbehälter für brennkraftbetriebene Bolzensetzgeräte |
EP2826601A1 (de) * | 2013-07-16 | 2015-01-21 | HILTI Aktiengesellschaft | Steuerungsverfahren und Handwerkzeugmaschine |
CN105157060A (zh) * | 2014-05-30 | 2015-12-16 | 胡晋青 | 一种透平燃烧室 |
CN111021778A (zh) * | 2019-11-30 | 2020-04-17 | 江苏中润信息工程科技开发有限公司 | 适用于安防的破墙设备 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3514025A (en) * | 1967-10-30 | 1970-05-26 | Omark Industries Inc | Powder actuated tool |
GB2072811A (en) * | 1980-03-31 | 1981-10-07 | Hilti Ag | Trigger electrode for a caseless propellant charged-actuated tool |
US6123241A (en) | 1995-05-23 | 2000-09-26 | Applied Tool Development Corporation | Internal combustion powered tool |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3861371A (en) * | 1973-12-10 | 1975-01-21 | Joseph Gamell Ind Inc | Ignition system for engine |
DE3005342A1 (de) * | 1980-02-13 | 1981-08-20 | Hilti AG, 9494 Schaan | Pulverkraftbetriebenes bolzen-setzgeraet |
JPS56129581U (zh) * | 1980-03-03 | 1981-10-01 | ||
US4477717A (en) * | 1983-04-08 | 1984-10-16 | Wellman Thermal Systems Corporation | Fast start glow plug |
DE3825012A1 (de) * | 1988-07-22 | 1990-01-25 | Beru Werk Ruprecht Gmbh Co A | Werkstoff fuer ein elektrisches widerstandselement mit positivem temperaturkoeffizienten |
DE4010479A1 (de) * | 1990-03-31 | 1991-10-02 | Bosch Gmbh Robert | Gluehstiftkerze fuer brennkraftmaschinen |
DE4301252A1 (de) * | 1993-01-19 | 1994-07-21 | Beru Werk Ruprecht Gmbh Co A | Stabflammglühkerze |
DE19630402C2 (de) * | 1996-07-26 | 2000-12-28 | Beru Ag | Stabflammglühkerze |
JP2002098333A (ja) * | 2000-09-26 | 2002-04-05 | Ngk Spark Plug Co Ltd | グロープラグ |
DE102005015569A1 (de) * | 2005-04-05 | 2006-10-12 | Robert Bosch Gmbh | Keramisches Widerstands- oder Sensorelement |
US20080307794A1 (en) * | 2007-06-15 | 2008-12-18 | Robert Kurt Graupner | Guanidine based fuel system and method of operating a combustion system |
-
2008
- 2008-10-28 DE DE102008043228A patent/DE102008043228A1/de not_active Ceased
-
2009
- 2009-10-01 EP EP09171918A patent/EP2181809A1/de not_active Withdrawn
- 2009-10-22 JP JP2009243214A patent/JP2010105152A/ja active Pending
- 2009-10-23 TW TW098136245A patent/TW201031501A/zh unknown
- 2009-10-23 US US12/589,451 patent/US20100102103A1/en not_active Abandoned
- 2009-10-26 CN CN200910207328A patent/CN101722503A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3514025A (en) * | 1967-10-30 | 1970-05-26 | Omark Industries Inc | Powder actuated tool |
GB2072811A (en) * | 1980-03-31 | 1981-10-07 | Hilti Ag | Trigger electrode for a caseless propellant charged-actuated tool |
US6123241A (en) | 1995-05-23 | 2000-09-26 | Applied Tool Development Corporation | Internal combustion powered tool |
Also Published As
Publication number | Publication date |
---|---|
US20100102103A1 (en) | 2010-04-29 |
TW201031501A (en) | 2010-09-01 |
CN101722503A (zh) | 2010-06-09 |
JP2010105152A (ja) | 2010-05-13 |
DE102008043228A1 (de) | 2010-04-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20101108 |