EP0915298B1 - Stromdurchführungselement - Google Patents
Stromdurchführungselement Download PDFInfo
- Publication number
- EP0915298B1 EP0915298B1 EP98119860A EP98119860A EP0915298B1 EP 0915298 B1 EP0915298 B1 EP 0915298B1 EP 98119860 A EP98119860 A EP 98119860A EP 98119860 A EP98119860 A EP 98119860A EP 0915298 B1 EP0915298 B1 EP 0915298B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- holder
- insulator
- electrode
- current feedthrough
- elements
- 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.)
- Expired - Lifetime
Links
Images
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 invention relates to a current feed-through element, in particular an ignition or monitoring element for one Gas or oil burner, according to the generic term of the claim 1.
- a current feed-through element in particular an ignition or monitoring element for one Gas or oil burner, according to the generic term of the claim 1.
- Such an element is known from DE-A-195 39 516.
- Usual gas and condensate-tight current feed-through elements usually have rotationally symmetrical insulators on which molded elements are attached to prevent rotation could be.
- the holders for attaching the current feed-through elements, in which the isolators are located usually from a mounting plate against which the Insulators are sealed by means of a seal, whereby for the preload, i.e. the actual attachment and Sealing, a second sheet metal part ensures that by spot welding is connected to the mounting plate.
- the electrodes are fixed mechanically in the insulators, as specified in DE 26 45 034 C2. Between both components are provided with an O-ring for sealing, when the high-voltage connector is pressed on is biased on the electrode.
- the electrode in the usual current feedthrough elements is mechanically fixed in the insulator further the disadvantage that the holding force generated thereby the electrode versus the insulator does not meet the requirements is always enough. This is especially true if the electrode is bent. The one that occurs in the form of a torque Stress can lead to the fact that the The electrode loosens and as a result the tightness of the Connection between the electrode and the insulator wears off.
- the object underlying the invention is therein, a current feed-through element of the aforementioned Type in such a way that it is built up from a few individual parts is easy to assemble and inexpensive to produce can be.
- connections from the isolator to Holder and from the electrode to the insulator in the invention Formed over meltings results an improvement in the quality and use of the Current feedthrough element, since these connections over the Life of the current feedthrough element remain tight.
- 3 and 4 is a common current feedthrough element in the form of a double ignition electrode with metal holder shown.
- a rotationally symmetrical isolator 1 contains one Electrode 4 and is arranged in a holder 5 made of a mounting plate and another sheet metal part, between which a sealing ring 8a is arranged.
- the further sheet metal part is via spot welds 10 on the mounting plate attached and ensures the for attachment and sealing necessary pretension between the insulator 1 and the mounting plate.
- the electrode 4 is mechanically fastened in the insulator 1 and sealed with an O-ring, which High-voltage connection part 7 biased on the electrode 4 becomes.
- 3 and 4 are also a ground terminal 9 and a ground electrode 4a.
- 1 and 2 is a first embodiment the current feed-through element according to the invention in the form a double ignition electrode, in which the holder 5 and one or more insulators 1 in one piece from one ceramic material are made.
- the holder 5 from a ceramic To manufacture material as a single part and with the or to connect the isolators 1.
- the holder 5 can be made of a ceramic, for example Material manufactured using a ceramic pressing process be, but it is also possible to the holder 5 by injection molding to manufacture.
- different form elements for example form elements in the form of breakthroughs, depressions, surveys Attachment of holder 5 to the burner, integrated isolators or breakthroughs to accommodate insulators that are rotationally symmetrical are, form elements to prevent rotation with or without retaining collar, molded elements to secure the holder 5 compared to the burner housing, shaped elements to achieve the seal between the holder 5 and the burner housing and form elements to accommodate other elements such as For example, a ground electrode can be provided.
- the isolators can then be operated using various methods, e.g. by isostatic pressing, and also be provided with the mentioned form elements.
- connection of the holder 5 and the insulator 1 can by sintering the ceramic parts or by certain connecting means be achieved.
- a connection by sintering the ceramic parts is in Fig. 5 shown.
- the insulator 1 is during the hot fire firmly connected to the ceramic holder 5, wherein both parts can be green, one part green and one part can be burned or both parts burned can be present.
- connection is made by the shrinkage of the ceramic and by sintering if at least one component is in the green state is present. If both components are already burned sharply, sinter together.
- the collar on the insulator 1 shown in FIG. 5 is used thereby for positioning in the holder 5 and can be cylindrical be executed. For the strength and tightness of this The connection, however, is the observance of tight manufacturing tolerances necessary. If these tolerances are not met there is a possibility of tapering the fret to perform as shown in Fig. 6. Through this Training will in any case be a close connection between Holder 5 and isolator 1 reached. The isolator 1 centered in the holder 5.
- a connection between insulator 1 and holder 5 under Use of a connecting means is shown in Fig. 7.
- a glaze or glass 3 may be used, the use of a glaze being preferred is because most insulators 1 are glazed. Thereby it is possible to use glazed insulators 1 with unglazed Holders 5 to connect in the glaze firing.
- the insulator collar can be cylindrical or conical.
- connection of the electrode 4 with the insulator 1 is also achieved gastight by melting glass. There are however, other attachments are also possible in principle, which ensure a tight connection between them.
- Essential for the current feed-through elements described above is the execution of the holder 5 from one ceramic workpiece. It follows that the or Insulators 1 formed with the holder 5 in one piece can be manufactured, but also both components separately and connected to each other in the manner described above can be. It is possible to isolators 1 and Holder 5 different types of individual electrodes up to To combine electrode blocks. With standardization the junction between the isolator, i.e. this results in the insulator collar and the holder 5 Modular system that is an inexpensive production of a Range of current feed-through elements allowed.
- the strength of the holder in the range of the intended Fixing holes is more of several Factors, e.g. the screw diameter or the required Tightening torque or the nature of the boiler wall of the depending burner. With a wall thickness of the ceramic approx. 6 mm between the screw head and the burner wall sufficient strength can be assumed become. This has been confirmed by tests.
- the current feed-through elements described in Gas and condensate-tight design have the advantage that compared to the usual current feed-through elements a smaller number of individual parts and therefore the number of assembly operations is significantly reduced.
- the usual current feed-through elements are namely two Provide sheet metal parts and a gasket that thereby assembles be that the insulator in a welding device a sheet is placed over the insulator, the seal is placed over the insulator, the second Sheet metal part is placed and the sheet metal parts pressed and then be welded.
- the current feed-through element according to the invention can be formed in one piece with the insulator holder the holder manufacture in connection with the isolator by means of a pressing tool or by another usual manufacturing process, e.g. by ceramic injection molding, so that none for fastening the insulator in the holder Operations. If isolators and holders are separate can be manufactured due to the use of standardized Parts of the individual machines are better utilized and can be a certain variety of types reach different holders.
- FIGS. 8 and 9 A holder made of a ceramic material allows in addition to the constructions described above, the attachment of ground electrodes, as shown in FIGS. 8 and 9 is.
- Fig. 8 shows a ground electrode 4a, which in a Hole is made in the holder 5. Is in this area the ceramic was previously metallized. The connection between this conductive layer and the ground electrode 4a then e.g. through a solder joint 6.
- Fig. 9 is a variant shown, in which the ground electrode 4a with, for example welded tab 9 through a through hole leads in the holder 5 and sealed with the help of glass is what is analogous to the formation of FIG. 7.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Spark Plugs (AREA)
- Bipolar Transistors (AREA)
- Microwave Tubes (AREA)
- Electron Sources, Ion Sources (AREA)
- Insulators (AREA)
- Control Of Combustion (AREA)
Description
Claims (6)
- Stromdurchführungselement, insbesondere Zünd- oder Überwachungselement für einen Gas- oder Ölbrenner, mit wenigstens einer Elektrode, die in einem Isolator (1) aus einem keramischen Werkstoff angeordnet ist, der dicht in einem Halter (5) zum Befestigen des Stromdurchführungselements sitzt, dadurch gekennzeichnet, dass der Halter (5) aus einem keramischen Werkstoff gefertigt ist.
- Stromdurchführungselement nach Anspruch 1, dadurch gekennzeichnet, daß der Halter (5) und der Isolator (1) in einem Stück aus einem keramischen Werkstoff gefertigt sind.
- Stromdurchführungselement nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß am Halter (5) und/oder am Isolator (1) Formelemente zur Befestigung des Halters (5) am Brenner, zur Lagesicherung des Halters (5) gegenüber dem Brennergehäuse, zur Abdichtung zwischen Halter (5) und Brennergehäuse, sowie zur Aufnahme weiterer Elemente wie beispielsweise einer Masseelektrode und integrierte Isolatoren oder Durchbrüche zur Aufnahme von Isolatoren ausgebildet sind.
- Stromdurchführungselement nach Anspruch 1, dadurch gekennzeichnet, daß der Halter (5) und der Isolator (1) jeweils aus einem keramischen Werkstoff bestehen und durch Sintern miteinander verbunden sind.
- Stromdurchführungselement nach Anspruch 1, dadurch gekennzeichnet, daß der Halter (5) und der Isolator (1) mittels Glas oder einer Glasur als Verbindungsmittel miteinander verbunden sind.
- Stromdurchführungselement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Isolator (1) und die Elektrode (4) durch Glaseinschmelzen miteinander verbunden sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19749105 | 1997-11-06 | ||
DE19749105A DE19749105A1 (de) | 1997-11-06 | 1997-11-06 | Stromdurchführungselement |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0915298A2 EP0915298A2 (de) | 1999-05-12 |
EP0915298A3 EP0915298A3 (de) | 2000-04-26 |
EP0915298B1 true EP0915298B1 (de) | 2003-09-03 |
Family
ID=7847848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98119860A Expired - Lifetime EP0915298B1 (de) | 1997-11-06 | 1998-10-20 | Stromdurchführungselement |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0915298B1 (de) |
AT (1) | ATE249014T1 (de) |
DE (2) | DE19749105A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19906032B4 (de) * | 1999-02-12 | 2016-06-09 | Federal-Mogul Ignition Gmbh | Stromdurchführungselement für einen Gas- oder Ölbrenner |
DE202004006644U1 (de) * | 2004-04-27 | 2004-08-26 | Buderus Heiztechnik Gmbh | Elektrode |
DE202005005232U1 (de) * | 2005-03-31 | 2005-06-09 | Rauschert Gmbh | Halteblech für Elektrode |
DE102006023841A1 (de) * | 2006-05-19 | 2007-11-22 | Viessmann Werke Gmbh & Co Kg | Elektrodenanordnung |
DE102007002118A1 (de) * | 2007-01-11 | 2008-07-17 | Siemens Ag | Isolator sowie Verfahren zur Herstellung eines Isolators |
ITVA20100010U1 (it) * | 2010-03-25 | 2011-09-26 | Whirlpool Co | Sistema di fissaggio per un elettrodo di accensione di un bruciatore a gas. |
IT1400683B1 (it) | 2010-07-06 | 2013-06-28 | Castfutura Spa | Dispositivo di accensione per caldaie o simili. |
DE102010038004B4 (de) * | 2010-10-06 | 2014-10-02 | Prüfrex engineering e motion gmbh & co. kg | Zündfunkengeber und Verfahren zu dessen Herstellung |
AT515792B1 (de) * | 2014-07-28 | 2015-12-15 | Marco Gehrer | Kaminofen |
IT201600119329A1 (it) * | 2016-11-24 | 2018-05-24 | Power Tech S R L | Candela di accensione/rilevazione per caldaie o simili, sistema e metodo per produrre tale candela |
DE102017210590B4 (de) * | 2017-06-23 | 2019-03-28 | Convotherm Elektrogeräte GmbH | Verbindungsvorrichtung für eine Elektrode |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2329088A1 (fr) * | 1975-10-21 | 1977-05-20 | Djeddah Jacques | Bougie ou electrode d'allumage pour bruleur |
FR2412034A1 (fr) * | 1977-12-17 | 1979-07-13 | Vaillant Sarl | Veilleuse |
DE3344679A1 (de) * | 1983-12-10 | 1985-06-20 | Rheometron AG, Basel | Verfahren zum einsintern stiftfoermiger elektroden oder elektrodenschaefte aus metallischem werkstoff in ein keramisches messrohr fuer magnetisch-induktive durchflussmessgeraete |
DE3532472A1 (de) * | 1985-09-11 | 1987-03-19 | Beru Werk Ruprecht Gmbh Co A | Mehrteilige leitungsdurchfuehrung durch einen isolator |
DE3720061A1 (de) * | 1987-06-16 | 1988-12-29 | Philips Patentverwaltung | Stromdurchfuehrung fuer hochdruckbehaelter mit innendruecken groesser als 1.000 bar |
US4786762A (en) * | 1988-03-03 | 1988-11-22 | Emerson Electric Co. | Sleeve arrangement for a hermetic terminal assembly |
US5368220A (en) * | 1992-08-04 | 1994-11-29 | Morgan Crucible Company Plc | Sealed conductive active alloy feedthroughs |
DE19539516A1 (de) * | 1995-10-25 | 1997-04-30 | Rauschert Gmbh & Co Kg Paul | Keramikteil mit Halteelement |
-
1997
- 1997-11-06 DE DE19749105A patent/DE19749105A1/de not_active Ceased
-
1998
- 1998-10-20 EP EP98119860A patent/EP0915298B1/de not_active Expired - Lifetime
- 1998-10-20 AT AT98119860T patent/ATE249014T1/de active
- 1998-10-20 DE DE59809477T patent/DE59809477D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE249014T1 (de) | 2003-09-15 |
EP0915298A2 (de) | 1999-05-12 |
DE59809477D1 (de) | 2003-10-09 |
EP0915298A3 (de) | 2000-04-26 |
DE19749105A1 (de) | 1999-06-10 |
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