EP0930464A2 - Méthode et système d'assemblage étanche d'une électrode de brûleur - Google Patents

Méthode et système d'assemblage étanche d'une électrode de brûleur Download PDF

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Publication number
EP0930464A2
EP0930464A2 EP98121428A EP98121428A EP0930464A2 EP 0930464 A2 EP0930464 A2 EP 0930464A2 EP 98121428 A EP98121428 A EP 98121428A EP 98121428 A EP98121428 A EP 98121428A EP 0930464 A2 EP0930464 A2 EP 0930464A2
Authority
EP
European Patent Office
Prior art keywords
edge
sealing ring
hole
electrode
burner
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.)
Granted
Application number
EP98121428A
Other languages
German (de)
English (en)
Other versions
EP0930464A3 (fr
EP0930464B1 (fr
Inventor
Ralf Drechsel
Werner Bätz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rauschert & Co KG GmbH
Original Assignee
Rauschert & Co KG GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rauschert & Co KG GmbH filed Critical Rauschert & Co KG GmbH
Priority to SI9830409T priority Critical patent/SI0930464T1/xx
Publication of EP0930464A2 publication Critical patent/EP0930464A2/fr
Publication of EP0930464A3 publication Critical patent/EP0930464A3/fr
Application granted granted Critical
Publication of EP0930464B1 publication Critical patent/EP0930464B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q3/00—Igniters using electrically-produced sparks
    • F23Q3/006—Details

Definitions

  • the present invention relates to a method for fastening an electrode to a Wall plate of a burner, the wall plate having a bore in which the ceramic insulating body of an electrode is arranged, whereupon by a pressing process the metal material of the wall plate surrounding the ceramic body of the electrode in the direction the center of the bore is plastically deformed so that the ceramic body through the Hole edge of the wall plate is held.
  • the present invention also relates to a burner electrode with a ceramic insulating body of the electrode in a hole-receiving wall plate.
  • burners have long been known. This can be the electrode in a Bore-receiving wall plate either separately into an opening in a burner wall insertable holding plate, but theoretically can also simply the boiler wall in question or an end plate of a burner insert has a corresponding bore, in which the ceramic insulating body of the electrode is picked up and fixed.
  • wall plate used here includes the term "holding plate” and the The use of this term is largely synonymous here, even if as a rule separate, small holding plates are meant, which are mounted on the electrades and which in the assembled state of the burner form part of the wall of this burner, so that insofar as the term "wall plate” is applicable.
  • a holding plate to be used on a burner wall is in connection with the electrode and its It is easier to handle and therefore preferred.
  • the holding plate can be fixed relatively easily in the designated opening of the wall plate, e.g. B. by screwing.
  • the connection between the holding plate and the electrode is against it comparatively complex, since the electrode is live during operation or, in In the case of a monitoring electrode, very low currents must be transported so that the through the electrode passed through the holding plate is insulated very well from the holding plate itself have to be.
  • Electrode This is generally done through the ceramic insulator that surrounds the electrode, the unit consisting of ceramic insulating body and the central metallic electrode element is also referred to collectively as the "electrode”.
  • connection between the ceramic insulating body of the electrode and the holding plate can be made mechanically relatively safe by the usual pressing process, but is this connection is generally not gas-tight.
  • this connection is generally not gas-tight.
  • the object of the present invention is a method for fastening burner electrodes in holding plates or a corresponding, to provide a burner electrode provided with a holding plate, which provides a gas-tight connection Provide between the holding plate and the burner electrode.
  • this object is achieved in that before the pressing process of Holding plates or wall plates an elastically or plastically deformable sealing ring between the perforated edge of the wall plate (or retaining plate) and the ceramic body of the Electrode is arranged.
  • the one on which the invention is based Object achieved in that between the edge of the receiving ceramic body Bore of the holding plate and the ceramic body an elastic and / or plastic Sealing ring is arranged.
  • the method for producing such a connection is expediently so designed that holding and positioning devices are provided, through which the provided between the edge of the hole and the ceramic body during the pressing of the Retaining plate remains in its intended position.
  • the sealing ring can also itself be designed in a corresponding manner that he before connecting the holding plate and Ceramic body either on the ceramic body or on the holding plate or the edge of the hole of the holding plate adheres firmly. Examples of this will be described later.
  • a Possibility of positioning or precise arrangement of the sealing ring lies in the ceramic body at the level of the mounting position of the retaining plate, a circumferential groove to provide in which a sealing ring is at least partially received. The Sealing ring can then not in the longitudinal direction on the generally cylindrical Slip ceramic body.
  • the sealing ring could also be on the edge of the hole provided in the holding plate be attached, e.g. B. if a circumferential in the opening edge of the retaining plate Depression is provided, or if the sealing ring has a U-shaped or L-shaped cross section has one or two radially outwardly projecting legs, which makes the sealing ring can be anchored to the opening edge of the retaining plate.
  • an im Cross section of flat rectangular sealing ring also with a tight fit on the cylindrical Ceramic body would be pushed on and would fit due to the tight fit flat, flat contact surface on the ceramic body also not easily slip.
  • the pressing of the Metal of the retaining plate in a ring and essentially without interruption around the edge of the hole circumferentially at a substantially constant distance from the edge of the hole in the hole Holding plate is done.
  • the pressing can also be interrupted and in particular simultaneously or successively over certain angle segments of 60 °, 90 ° or 120 ° short, unpressed webs can also be made between adjacent segments remain.
  • This pressing is preferably carried out at a distance of between 0.2 mm and 10 mm from the Hole edge of the hole, the width of the press line or a corresponding press tool is preferably between 1 and 5 mm.
  • the metal is pressed Retaining plate preferably from both sides of the metal plate and preferably in each case at the same distance from the edge of the hole and also in the same width and the same Cross-sectional shape of the pressing or the pressing tool. That way expediently annular grooves are stamped into the metal sheet on both sides, a part of the metal gripped by the pressing tools flows radially inwards and thus reduces the diameter of the bore receiving the ceramic body with the seal, to ensure a firm engagement between the holding plate, seal and ceramic body to manufacture.
  • a variant of the production process is particularly preferred, in which the press grooves with a trapezoidal cross section.
  • a variant of the method is particularly preferred, in which the pressing done in such a way that the inner edges of the bore at the top and bottom of the Each sheet is pressed a little more radially inwards than the sheet material in one middle section in between, i.e. between the top and bottom of the sheet.
  • This has the effect that a groove or circumferential depression is effectively produced in the edge of the hole in which the seal is held securely.
  • the seal in Extends axially beyond the thickness of the retaining plate, these come above Edges of the mounting hole with the seal in a more or less linear shape Touch, which causes a high sealing pressure and thus the tightness of the Connection guaranteed in a special way.
  • an embodiment of the invention preferred, in which the sealing ring is arranged such that between the Ceramic body of the electrode and the holding plate there is no direct contact.
  • the edge of the hole in the hole in the retaining plate only engages with the seal and the seal itself with this hole edge on one side and on the other side engages with the ceramic body.
  • the seal has a corresponding thickness that a direct contact between the bracket and Ceramic body of the electrode prevented, or in that the seal in the axial Direction extends on both sides across the thickness of the retaining plate, so that over the entire thickness of the holding plate the seal between the holding plate and the Ceramic body is arranged.
  • Suitable materials for the sealing ring come e.g. B. PTFE, EPTM or silicone in question.
  • the sealing ring can also be made of one plastically deformable metal, such as. B. copper or a copper alloy.
  • a plastically deformable metal such as. B. copper or a copper alloy.
  • Such Metal seals are particularly suitable when the burner is in operation higher on the holding plate and in particular in the area of the burner electrode on the holding plate Temperatures arise at which the aforementioned elastomeric seals may occur would not stand up.
  • the seals for the connection according to the invention can have different cross sections to have. Both round, rectangular and x-shaped cross-sectional shapes are possible, without this list being intended to be exhaustive.
  • FIG shown box A burner in the form of a rectangular, here open on three sides, can be seen in FIG shown box, which is tightly closed during operation of the burner and only in the An opening for the discharge of exhaust gases is correspondingly not shown here the arrow B shown there.
  • Burner rods 21 which are hollow and with their hollow interior with a fuel, specifically a fuel gas and an air supply are connected. This fuel gas and combustion air supply takes place along arrow A, for example by the injector action of the supplied fuel gas, if necessary also with a blower, not shown here.
  • an ignition electrode 1 is shown, which is in a holding plate 2 is arranged in the wall 22 of the combustion chamber 20.
  • the bracket 2 can with the wall 22 screwed or riveted.
  • the ignition electrode itself and its attachment in the The holding plate can be seen better in FIGS. 2 and 3.
  • FIG. 2 is an axial section through a first embodiment of a burner electrode shown in the fastening area has a substantially cylindrical ceramic body 3, through which an electrode wire 5 extends centrally.
  • the electrode wire 5 is again with a connector 15 connected, and between the connector 15, the electrode wire 5 and the Ceramic body 3, a sealing ring 14 is also provided, which, among other things, the gas-tight Connection between the ceramic body 3 and the electrode wire arranged centrally therein 5 ensures.
  • the holding plate 2 also shown in section or the edge of the central bore in the Retaining plate 2 is in engagement with a seal 4 ', which extends in the axial direction over the entire thickness of the holding plate 2 extends.
  • the sealing ring used here could e.g. B. have the flat rectangular cross-sectional shape shown in Figure 4 above.
  • the sealing ring 4 ' is stronger in the area of the upper and lower edges of the edge of the hole compressed than in the rest of the area. Because of this almost linear intervention a very high specific surface pressure is generated, with a very good seal Connection.
  • the ring-shaped ones that have been pressed in around the receiving opening have been pressed in Grooves 7 have a trapezoidal cross-section and their clear distance from the edge of the hole, i.e. the clear distance between the radially innermost upper or lower edge the grooves 7 to the edge of the hole is smaller than the thickness of the holding plate and is only between 20 and 30% of this thickness.
  • the exemplary embodiment according to FIG. 3 differs from the exemplary embodiment according to Figure 2 in several ways.
  • the ceramic body 3 clearly has one changed shape and is no longer a simple hollow cylinder but a hollow cylinder with a stepped, central bore, and the ceramic body 3 also has one its outer circumferential groove 8.
  • the cavity runs essentially in a tight fit of the electrode wire 5.
  • a sealing ring 14 arranged, and preferably in a tight fit, so that again a safe Sealing between the electrode wire 5 on the one hand and the inner wall of the hollow cylindrical Ceramic body 3 is generated on the other hand.
  • the trapezoidal grooves 7 of the holding plate 2 have essentially the same shape and Arrangement as in the case of the embodiment shown in Figure 2 and also due to Special arrangement of the trapezoidal grooves 7 produced, projecting upper and lower perforated edges 9 have essentially the same course as in the exemplary embodiment of Figure 2.
  • FIG. 5 is a section of the Sealing engagement between the holding plate 2 and ceramic body 3 without the sealing ring shown.
  • the sealing ring 4 is dimensioned such that it is only partially received in this groove and definitely protrudes so far from this groove that it is in tight engagement with the inner surface the hole in the holding plate 2 occurs when this holding plate is pressed against the ceramic body 3 is.
  • the sealing ring 4 could, for. B. that shown in the middle of Figure 4, approximately Have an X-shaped cross-sectional shape, due to the pressure exerted by the holding plate 2 takes an almost square shape.
  • the sealing ring initially a more or less linear engagement along the protruding edges of the sealing ring, so that even in the area of these edges there is a relatively large, specific surface pressure.
  • Sealing ring 4 '' can be used, as shown in the lower part of Figure 4, because a such a sealing ring with flat surfaces also initially only in more or less linear engagement occurs and in general also with such sealing rings Make connections.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Gasket Seals (AREA)
  • Combustion Of Fluid Fuel (AREA)
EP98121428A 1998-01-20 1998-11-11 Méthode et système d'assemblage étanche d'une électrode de brûleur Expired - Lifetime EP0930464B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9830409T SI0930464T1 (en) 1998-01-20 1998-11-11 Method and system for sealingly mounting a burner electrode

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19801913 1998-01-20
DE19801913A DE19801913A1 (de) 1998-01-20 1998-01-20 Verfahren und Vorrichtung für das abgedichtete Befestigen einer Brennerelektrode

Publications (3)

Publication Number Publication Date
EP0930464A2 true EP0930464A2 (fr) 1999-07-21
EP0930464A3 EP0930464A3 (fr) 2000-04-19
EP0930464B1 EP0930464B1 (fr) 2003-04-23

Family

ID=7855105

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98121428A Expired - Lifetime EP0930464B1 (fr) 1998-01-20 1998-11-11 Méthode et système d'assemblage étanche d'une électrode de brûleur

Country Status (4)

Country Link
EP (1) EP0930464B1 (fr)
DE (2) DE19801913A1 (fr)
ES (1) ES2195256T3 (fr)
SI (1) SI0930464T1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005111500A2 (fr) * 2004-05-17 2005-11-24 Castfutura S.P.A. Systeme pour fixer des bougies d'allumage de chaudieres ou analogue
CN101929686A (zh) * 2009-06-26 2010-12-29 博西华电器（江苏）有限公司 燃气灶
ITGE20100053A1 (it) * 2010-05-18 2011-11-19 Castfutura Spa Metodo e dispositivo di fissaggio per candele d'accensione di caldaie o simili
US8233260B2 (en) 2007-03-26 2012-07-31 Itw Industrial Components S.R.L. Con Unico Socio Compact gas lighting device for an electric household appliance
CN101749743B (zh) * 2008-12-16 2013-07-31 博西华电器（江苏）有限公司 燃气灶
CN106152182A (zh) * 2016-07-18 2016-11-23 广东美的厨房电器制造有限公司 一种灶具点火针的固定装置及灶具

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT515792B1 (de) * 2014-07-28 2015-12-15 Marco Gehrer Kaminofen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2237131A1 (en) * 1973-07-03 1975-02-07 Saunier Duval Gas pilot light with igniter and thermocouple - gas pipe is covered with an injector wedged through deflector plate
GB2083187A (en) * 1980-09-06 1982-03-17 Neff Werke Ignition device for a gas burner
US4527085A (en) * 1983-02-22 1985-07-02 Honeywell Inc. High voltage spark electrode structure

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7933687U1 (de) * 1979-11-29 1980-03-06 Gebrueder Cramer, 5750 Menden Kochmulde fuer einen gasherd
DE8914109U1 (de) * 1989-11-30 1990-01-25 MEKU Metall- und Kunststoff-Verarbeitungs-GmbH, 7735 Dauchingen Zündelektrodenpaar für einen Brenner
AT397852B (de) * 1992-08-03 1994-07-25 Vaillant Gmbh Zündelektrode

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2237131A1 (en) * 1973-07-03 1975-02-07 Saunier Duval Gas pilot light with igniter and thermocouple - gas pipe is covered with an injector wedged through deflector plate
GB2083187A (en) * 1980-09-06 1982-03-17 Neff Werke Ignition device for a gas burner
US4527085A (en) * 1983-02-22 1985-07-02 Honeywell Inc. High voltage spark electrode structure

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005111500A2 (fr) * 2004-05-17 2005-11-24 Castfutura S.P.A. Systeme pour fixer des bougies d'allumage de chaudieres ou analogue
WO2005111500A3 (fr) * 2004-05-17 2006-06-01 Cast S P A Systeme pour fixer des bougies d'allumage de chaudieres ou analogue
US8233260B2 (en) 2007-03-26 2012-07-31 Itw Industrial Components S.R.L. Con Unico Socio Compact gas lighting device for an electric household appliance
CN101749743B (zh) * 2008-12-16 2013-07-31 博西华电器（江苏）有限公司 燃气灶
CN101929686A (zh) * 2009-06-26 2010-12-29 博西华电器（江苏）有限公司 燃气灶
CN101929686B (zh) * 2009-06-26 2015-08-05 博西华电器（江苏）有限公司 燃气灶
ITGE20100053A1 (it) * 2010-05-18 2011-11-19 Castfutura Spa Metodo e dispositivo di fissaggio per candele d'accensione di caldaie o simili
CN106152182A (zh) * 2016-07-18 2016-11-23 广东美的厨房电器制造有限公司 一种灶具点火针的固定装置及灶具
CN106152182B (zh) * 2016-07-18 2018-09-14 广东美的厨房电器制造有限公司 一种灶具点火针的固定装置及灶具

Also Published As

Publication number Publication date
EP0930464A3 (fr) 2000-04-19
SI0930464T1 (en) 2003-08-31
DE19801913A1 (de) 1999-07-22
ES2195256T3 (es) 2003-12-01
DE59808056D1 (de) 2003-05-28
EP0930464B1 (fr) 2003-04-23

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