EP0876081A2 - Rohrheizkörper mit eingebauter Überhitzungssicherung - Google Patents
Rohrheizkörper mit eingebauter Überhitzungssicherung Download PDFInfo
- Publication number
- EP0876081A2 EP0876081A2 EP98106891A EP98106891A EP0876081A2 EP 0876081 A2 EP0876081 A2 EP 0876081A2 EP 98106891 A EP98106891 A EP 98106891A EP 98106891 A EP98106891 A EP 98106891A EP 0876081 A2 EP0876081 A2 EP 0876081A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrically insulating
- overheating protection
- connecting bolt
- overheating
- bushing
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
Definitions
- the invention relates to a tubular heater with built-in Overheating protection, especially in household appliances is used and the heating coil of an electric insulating bulk material is surrounded.
- EP 0 370 941 B1 describes a tubular heater with a built-in one Overheating protection described, the connector from an inner - i.e. towards most of the tubular heater attached - and from an outer connecting bolt consists.
- the inner connector bolt on the inner A heating coil is attached at the end, penetrates a lead-through ceramic, which, on an internal bulge of a Supported jacket tube, an electrically insulating bulk material in the heating coil area.
- the inner connector bolt is at the outer end with an axial bore provided, wherein a first axial approach of overheating protection is inserted, which is otherwise the bulge-like hugs the outer end of this connecting bolt.
- the overheating protection with the outer connection bolt electrically connected through an axial hole a sealing bushing from the jacket tube emerges and at this its end with an electric Connection terminal is provided.
- the actual overheating protection is made of an electrically insulating sleeve Plastic surround.
- the wall of the shell can be the inner one Touch the wall of the casing tube, but at both ends is the Enclosed by plastic bushings, which the Surround the end pieces of the connecting bolts.
- the cover On the outside In addition to the bushing, the cover is also heat-insulating Cover plate and a ceramic bushing arranged.
- EP 0 086 465 B1 describes the installation of an overheating fuse shown in which one of a metal shell closely touched heating coil to a conical inner end of a inner connecting bolt is pulled and attached to it.
- This sheath is both electrically insulating, the Bulk material surrounding the heating coil as well as through a Insulating bushing through which the casing from the jacket pipe protrudes, held at a distance from the tubular casing of the tubular heater.
- An interchangeable overheating fuse is inserted into the casing inserted on an insulated connecting wire connected, which runs through the shell and into the open exit.
- the invention is based on the object, a tubular heater to further develop its overheating protection with an inner and an outer connecting bolt is attached and from a tubular casing of the tubular heater through a Overheating protection surrounding and electrically insulating Cover is electrically separated, so that the tubular heater is easy to manufacture and has an improved thermal Coupling its overheating protection has.
- this object is achieved by a tubular heater with built-in overheating protection solved in the case of a jacket tube and almost coaxial him one of an electrically insulating bulk material Surrounded heating coil is arranged, the end piece to a first end of an inner connecting pin is connected, the in a closely matched axial through opening first bushing is inserted, which of the Connected tightly inserted into the casing tube is and in the axial direction on a ring bulge of the Jacket tube is applied.
- Axial approaches of overheating protection are in an axial hole at a second end of the inner connecting bolt or in an axial hole on one inserted the first end of the outer connecting bolt and pressed in. Its second end penetrates a final bushing at the end of the casing tube.
- the tubular heater according to the invention is characterized in that the Diameter of the outer connecting pin smaller than that Diameter of the overheating protection is and that one electrically insulating cover tightly the wall of the overheating protection and partly also the outer connecting bolt surrounds and that the jacket tube interior between the first bushing and the final bushing as well as the overheating protection, the outer connection bolt and the electrically insulating sheath with an electrically insulating potting compound is filled.
- the diameter of the outer connecting bolt is smaller than the diameter of the overheating protection, arises between the close to the wall of the Overheating protection adjacent sleeve and the connecting bolt a space through which the potting compound to Thermal fuse can reach and thus the whole Fills the interior. It is also easy to insert ensured via the outer connecting bolt. Still is the thermal coupling to the outside also in this part ensured.
- the electrically insulating sheath is made of Teflon and as an electrically insulating Potting compound araldite, preferably mixed with corundum dust, is used.
- An advantage of the tubular heater according to the invention is furthermore in the easily obtainable and reliable electrical Insulation of the overheating protection from the casing pipe of the tubular heater.
- the tubular heater according to the invention is in the drawing shown.
- a heating coil 2 is arranged in a jacket tube 1 in a jacket tube 1 . It is of electrically insulating Surround bulk material.
- Each end of the heating coil 2 is at a first end of a corresponding inner connection bolt 4 attached.
- the connecting bolt 4 becomes tight adapted into an axial through opening of a first, e.g. ceramic, grommet 5 inserted by the Connection side inserted into the casing tube 1 closely adapted until it is in the axial direction on a ring bulge 6 of the casing tube 1 is applied.
- the overheating fuse 7 is axial on both sides Approaches 71, 72 provided. You will each in its axial Bore at a second end of the inner connecting pin 4 or at a first end of an outer connecting bolt 8 inserted and pressed in.
- an electrical terminal 10 of the tubular heater is connected to a second end of the outer connecting bolt 8 .
- the final bushing 9 is made e.g. made of a heat-resistant plastic.
- An electrically insulating, preferably made of Teflon Cover 11 is pushed onto overheating fuse 7, so that it closely encloses its wall. It’s because of that no additional bushings for attaching the insulating sleeve necessary. Part of the insulating sleeve 11 is still sufficient via the outer connecting bolt 8.
- the inside of the Jacket tube 1 space left between the first Bushing 5 and the final bushing 9 and around the overheating fuse 7, the outer connecting bolt 8 and the electrically insulating sleeve 11 is covered with a electrically insulating potting compound 12 filled.
- the Potting compound 12 also ensures mechanical strength and can consist of araldite.
- the araldite casting compound is advantageous 12 corundum dust added, which increases their thermal conductivity is increased. This takes overheating protection 7 better the temperature conditions on the jacket tube 1 of the tubular heater true.
- the tubular heater according to the invention is manufactured as follows.
- the inner connecting pin 4, the overheating protection 7 and the outer connecting bolt 8 become an electrical connector assembly folded.
- On the inner connecting pin 4 becomes the first bushing 5th then the heating coil 2 is spot welded welded on.
- the bulk material 3 is inserted into the casing tube 1 poured in and then the electrical connection group inserted into the casing tube 1.
- the tubular heater will then bent and the free space from the grommet 5 to to the mouth of the casing tube 1 with the potting compound 12th shed.
- the electrically insulating Sleeve 11 pushed onto the overheating fuse 7. At the Penetration of the sheath 11 into the potting compound 12 filled interior also fills the shell 11 with this.
- the overheating fuse 7 is in the invention Tubular heating element installed in such a way that it increases the temperature of the casing tube 1 over a permissible value can perceive.
Landscapes
- Resistance Heating (AREA)
- Pipe Accessories (AREA)
- Materials For Medical Uses (AREA)
- Road Signs Or Road Markings (AREA)
Abstract
Description
Claims (4)
- Rohrheizkörper mit eingebauter Überhitzungssicherung, bei dem in einem Mantelrohr (1) und beinahe koaxial zu ihm eine von einem elektrisch isolierenden Schüttmaterial (3) umgebene Heizwendel (2) angeordnet ist, deren Endstück an ein erstes Ende eines inneren Anschlußbolzens (4) angeschlossen ist, der eng angepaßt in eine axiale Durchgangsöffnung einer ersten Durchführungshülse (5) eingesteckt ist, die von der Anschlußseite her eng angepaßt in das Mantelrohr (1) eingelegt ist und in axialer Richtung an einer Ringausbuchtung (6) des Mantelrohres (1) anliegt, wobei axiale Ansätze (71, 72) der Überhitzungssicherung (7) in ein axiales Loch an einem zweiten Ende des inneren Anschlußbolzens (4) bzw. in ein axiales Loch an einem ersten Ende eines äußeren Anschlußbolzens (8) eingesetzt und eingepreßt sind, dessen zweites Ende eine Schlußdurchführungshülse (9) am Ende des Mantelrohres (1) durchdringt und an dessen zweites Ende eine elektrische Anschlußklemme (10) des Rohrheizkörpers angeschlossen ist, dadurch gekennzeichnet, daß der Durchmesser des äußeren Anschlußbolzens (8) kleiner ist als der Durchmesser der Überhitzungssicherung (7), daß eine elektrisch isolierende Hülle (11) eng die Wandung der Überhitzungssicherung (7) und teilweise auch den äußeren Anschlußbolzen (8) umgibt und daß der Innenraum des Mantelrohres zwischen der ersten Durchführungshülse (5) und der Schlußdurchführungshülse (9) sowie um die Überhitzungssicherung (7), den äußeren Anschlußbolzen (8) und die elektrisch isolierende Hülle (11) herum mit einer elektrisch isolierenden Vergußmasse (12) ausgefüllt ist.
- Rohrheizkörper mit eingebauter Überhitzungssicherung nach Patentanspruch 1, dadurch gekennzeichnet, daß die elektrisch isolierende Hülle (11) aus Teflon ausgefertigt ist.
- Rohrheizkörper mit eingebauter Überhitzungssicherung nach Patentanspruch 1 oder 2, dadurch gekennzeichnet, daß als elektrisch isolierende Vergußmasse (12) Araldit verwendet wird.
- Rohrheizkörper mit eingebauter Überhitzungssicherung nach einem oder mehreren Patentansprüche 1 bis 3, dadurch gekennzeichnet, daß als elektrisch isolierende Vergußmasse (12) das mit dem Korundstaub vermischte Araldit verwendet wird.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI9830732T SI0876081T1 (de) | 1997-05-01 | 1998-04-16 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29707829U | 1997-05-01 | ||
DE29707829U DE29707829U1 (de) | 1997-05-01 | 1997-05-01 | Rohrheizkörper mit eingebauter Überhitzungssicherung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0876081A2 true EP0876081A2 (de) | 1998-11-04 |
EP0876081A3 EP0876081A3 (de) | 1998-11-11 |
EP0876081B1 EP0876081B1 (de) | 2004-10-27 |
Family
ID=8039795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98106891A Expired - Lifetime EP0876081B1 (de) | 1997-05-01 | 1998-04-16 | Rohrheizkörper mit eingebauter Überhitzungssicherung |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0876081B1 (de) |
AT (1) | ATE281055T1 (de) |
DE (2) | DE29707829U1 (de) |
ES (1) | ES2236843T3 (de) |
PT (1) | PT876081E (de) |
SI (1) | SI0876081T1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013012360A (ja) * | 2011-06-28 | 2013-01-17 | Nippon Denka Koki Kk | 電気ヒーター及びヒーター端子コネクタ |
DE102015118718A1 (de) | 2015-11-02 | 2017-05-04 | Dbk David + Baader Gmbh | Rohrheizkörper und Verfahren zum Fügen des Rohrheizkörpers |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29920503U1 (de) | 1999-11-23 | 2000-02-24 | Türk & Hillinger GmbH, 78532 Tuttlingen | Elektrische Heizpatrone |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2098436A (en) * | 1981-05-07 | 1982-11-17 | Ti Russell Hobbs Ltd | Electrical heating element |
US4697069A (en) * | 1983-08-22 | 1987-09-29 | Ingo Bleckmann | Tubular heater with an overload safety means |
EP0370941A2 (de) * | 1988-11-21 | 1990-05-30 | Emerson Electric Co. | Zusammenbau eines elektrischen Rohrheizkörpers |
JPH06267641A (ja) * | 1993-03-10 | 1994-09-22 | Kawai Denki Seisakusho:Kk | 曲げ加工が施された温度ヒューズ付きシーズヒータ及びその製造方法 |
EP0651589A2 (de) * | 1993-10-29 | 1995-05-03 | MERLONI TERMOSANITARI S.p.A. | Selbstschutz für elektrisches Heizelement, insbesondere für Waschmaschinen, Wasserheizer und dergleichen |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7510409U (de) * | 1975-08-28 | Bahlmann G Kg | Elektrisches Tauchheizgerät | |
DE3249500C2 (de) * | 1982-02-12 | 1992-04-23 | Elpag Ag Chur, Chur | Rohrheizkörper mit einer Überlastsicherung |
EP0204850A1 (de) * | 1985-06-05 | 1986-12-17 | Elpag Ag Chur | Rohrheizkörper |
DE8715851U1 (de) * | 1987-11-30 | 1988-02-18 | Elpag Ag Chur, Chur | Rohrheizkörper mit einer Überlastungssicherung |
DE9013601U1 (de) * | 1990-09-28 | 1991-01-24 | Conti Elektra Heizelemente GmbH, 6483 Bad Soden-Salmünster | Elektrischer Rohrheizkörper |
DE4243894A1 (en) * | 1991-12-24 | 1993-07-15 | Eltra Gmbh & Co Kg Leicht & Tr | Tubular heater with a thermal cut=out - has temp. dependent circuit breaker in tube screwed onto heating coil terminal in heater jacket. |
DE9309072U1 (de) * | 1993-06-17 | 1993-08-19 | Fritz Eichenauer Gmbh & Co Kg, 76870 Kandel | Elektrischer Rohrheizkörper |
-
1997
- 1997-05-01 DE DE29707829U patent/DE29707829U1/de not_active Expired - Lifetime
-
1998
- 1998-04-16 PT PT98106891T patent/PT876081E/pt unknown
- 1998-04-16 ES ES98106891T patent/ES2236843T3/es not_active Expired - Lifetime
- 1998-04-16 EP EP98106891A patent/EP0876081B1/de not_active Expired - Lifetime
- 1998-04-16 AT AT98106891T patent/ATE281055T1/de not_active IP Right Cessation
- 1998-04-16 DE DE59812158T patent/DE59812158D1/de not_active Expired - Fee Related
- 1998-04-16 SI SI9830732T patent/SI0876081T1/xx unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2098436A (en) * | 1981-05-07 | 1982-11-17 | Ti Russell Hobbs Ltd | Electrical heating element |
US4697069A (en) * | 1983-08-22 | 1987-09-29 | Ingo Bleckmann | Tubular heater with an overload safety means |
EP0370941A2 (de) * | 1988-11-21 | 1990-05-30 | Emerson Electric Co. | Zusammenbau eines elektrischen Rohrheizkörpers |
JPH06267641A (ja) * | 1993-03-10 | 1994-09-22 | Kawai Denki Seisakusho:Kk | 曲げ加工が施された温度ヒューズ付きシーズヒータ及びその製造方法 |
EP0651589A2 (de) * | 1993-10-29 | 1995-05-03 | MERLONI TERMOSANITARI S.p.A. | Selbstschutz für elektrisches Heizelement, insbesondere für Waschmaschinen, Wasserheizer und dergleichen |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 018, no. 672 (E-1646), 19. Dezember 1994 & JP 06 267641 A (KAWAI DENKI SEISAKUSHO:KK), 22. September 1994 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013012360A (ja) * | 2011-06-28 | 2013-01-17 | Nippon Denka Koki Kk | 電気ヒーター及びヒーター端子コネクタ |
DE102015118718A1 (de) | 2015-11-02 | 2017-05-04 | Dbk David + Baader Gmbh | Rohrheizkörper und Verfahren zum Fügen des Rohrheizkörpers |
Also Published As
Publication number | Publication date |
---|---|
DE29707829U1 (de) | 1997-07-10 |
EP0876081B1 (de) | 2004-10-27 |
PT876081E (pt) | 2005-02-28 |
ATE281055T1 (de) | 2004-11-15 |
SI0876081T1 (de) | 2005-08-31 |
DE59812158D1 (de) | 2004-12-02 |
EP0876081A3 (de) | 1998-11-11 |
ES2236843T3 (es) | 2005-07-16 |
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