EP0949846B1 - Tauchheizkörper zur Benutzung in Heizkörpern von Heisswasserkreislaufheizungen - Google Patents

Tauchheizkörper zur Benutzung in Heizkörpern von Heisswasserkreislaufheizungen Download PDF

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Publication number
EP0949846B1
EP0949846B1 EP99400854A EP99400854A EP0949846B1 EP 0949846 B1 EP0949846 B1 EP 0949846B1 EP 99400854 A EP99400854 A EP 99400854A EP 99400854 A EP99400854 A EP 99400854A EP 0949846 B1 EP0949846 B1 EP 0949846B1
Authority
EP
European Patent Office
Prior art keywords
cartridge
sleeve
collector
heating
tube
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
Application number
EP99400854A
Other languages
English (en)
French (fr)
Other versions
EP0949846A1 (de
Inventor
Michel Seba
Nirong Chuop Leak
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.)
Zehnder Group Participacions SAS
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ZT
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Filing date
Publication date
Application filed by ZT filed Critical ZT
Publication of EP0949846A1 publication Critical patent/EP0949846A1/de
Application granted granted Critical
Publication of EP0949846B1 publication Critical patent/EP0949846B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H05B3/78—Heating arrangements specially adapted for immersion heating
    • H05B3/82—Fixedly-mounted immersion heaters
    • 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 present invention relates to an immersion heater device that can be used in particular in a heating radiator with water circulation.
  • An immersion heater device comprising a collector sealed at both ends and containing a heat-transfer liquid to be heated and, housed in the collector while immersed in the heat-transfer liquid, a heated electric resistance heating cartridge embedded in the cartridge while being electrically insulated therefrom.
  • the heating cartridge comprises a cylindrical tubular metal body, for example steel, in which is compacted magnesia isolating the electrical resistance of the tube of the cartridge.
  • this known device has the major disadvantage of not ensuring perfect security from the point of view of electrical insulation because the internal electrical resistance of the heating cartridge can accidentally come into contact with the inner wall of the metal tube of the cartridge, for example to because of a crumbling of the magnesia due to a lack of compaction of the latter or a crack of the tube of the cartridge through which the heat transfer fluid can penetrate to break up the compacted magnesia, so that the short-lived current Circuit arriving to the metal collector can cause electrical shock to the user when the device is incorporated in a metal heating radiator water circulation.
  • this double insulated heating cartridge provides the desired degree of safety, it is very expensive to achieve since it requires not only the two concentric tubes internal and external, but also to compact magnesia in the inner tube to drown the electrical resistance and between the two inner and outer tubes to isolate them from each other.
  • the object of the present invention is to eliminate the drawbacks of the above-known devices by proposing a device forming an immersion heater comprising a collector in the form of a tube sealed at both ends and containing a heat-transfer liquid to be heated and housed in the collector bathed in the heat transfer liquid, an inner heater heating cartridge internally embedded in the cartridge being electrically insulated therefrom and which is characterized in that the coolant liquid is electrically insulating.
  • the heat-transfer liquid is mineral oil, preferably of the paraffinic type with a high viscosity index.
  • the heating cartridge is fixed in the manifold substantially coaxially with the latter by being carried at one of its ends by a support sleeve fixed through one of the end walls of the manifold.
  • the support sleeve of the cartridge is made of insulating material and comprises an externally threaded cylindrical portion engaging in a corresponding threaded hole in the end wall of the collector and a flange abutting against the outer face of the wall. end in the locking position of the sleeve in the end wall.
  • the support sleeve of the cartridge is made of metallic material and comprises an externally threaded cylindrical portion engaging in a corresponding threaded hole of another sleeve of insulating material also forming a nut for fixing the sleeve to the wall.
  • metal end of the manifold and a flange abutting against the other sleeve in the locking position of the sleeve in the other sleeve.
  • the heating cartridge is attached to the support sleeve by welding or gluing.
  • the heating cartridge comprises a cylindrical tube containing compacted magnesia in which the electric heating resistor is embedded, the two ends of which are respectively connected to two supply conductor wires passing through the support sleeve projecting from outside thereof .
  • the heating cartridge comprises one or more rings of electrically insulating material force-fitted on the tube of the cartridge.
  • the free end of the cartridge is covered with a cap of electrically insulating material.
  • the tube of the heating cartridge and the collector are metallic, for example steel.
  • the tube of the heating cartridge is made of an electrically insulating material, for example ceramic.
  • the immersion heater device will be described in the application to a circulating water heating radiator in which it is integrated to heat the circulating water, but it is understood that it can be used for other different applications. requiring heating a liquid or fluid.
  • the immersion heater device comprises a collector 1 in the form of a cylindrical metal tube sealed at both ends and containing a heat-transfer liquid to be heated 2.
  • the device further comprises, housed in the collector 1 by bathing in the coolant 2, a heating cartridge 3 for heating the heat transfer liquid 2 and constituted by a cylindrical metal tube 4 in which there is an internal heating electric resistance 5 embedded in compacted magnesia M in the tube 4 in order to electrically isolate the resistor 5 of the tube 4.
  • the resistor 5 is formed a spirally wound conductive wire with contiguous turns and has substantially the shape of an elongated U so that these two free ends coming out of the tube 4 are respectively connected to two external supply conductor wires 6.
  • the heat transfer liquid 2 is electrically insulating and is preferably constituted by mineral oil, preferably of the paraffinic type with a high viscosity index.
  • the mineral oil is that of SHELL sold under the name "SHELLFLEX" type 110 FC.
  • the heating cartridge 3 is fixed in the collector 1 substantially coaxially with the latter having one of its floating free ends and its opposite end secured to a support sleeve 7 made of an electrically insulating material fixed through one 1.
  • the support sleeve 7 comprises a cylindrical portion 7a externally threaded to engage in a corresponding threaded hole 1b through the end wall 1a of the collector 1 and a flange portion 7b bearing on the outer face of the end wall la when the support sleeve 7 is screwed into the wall la.
  • the support sleeve 7 further comprises a cylindrical end 7c in which the corresponding end of the heating cartridge 3 is secured by welding or gluing.
  • the supply wires 6 connected to the two ends of the heating resistor 5 through an internal bore of the support sleeve 7 to protrude outside the collector 1.
  • the heating cartridge 3 comprises one or more rings 8, in this case two in number, made of an electrically insulating material and fixed on the tube 4 of the cartridge 3 by being force-fitted thereon at a distant distance. one of the other. If necessary, the free end of the heating cartridge 3 may be covered with a cap (not shown) of electrically insulating material.
  • the rings 8 and this cap prevent accidental electrical contact between the tube 4 and the manifold 1.
  • the rings 8 and the cap are made of a material also to withstand the operating temperatures of the heating cartridge 3 .
  • the invention described above thus makes it possible to produce an immersion heater consisting of a heating cartridge known per se as described at the beginning of the description and having extremely high electrical insulation characteristics ensuring, thanks to the heat transfer liquid, a very high degree. safety of users, especially when the immersion heater is used in a heating radiator water circulation.
  • the support sleeve 7, instead of being made of an electrically insulating material may be made of metal material coated with insulating material.
  • FIG. 3 shows the sleeve 7 made of metallic material of identical structure to that of the sleeve 7 of FIG. 1 and whose externally threaded cylindrical portion 7a is engaged in a corresponding threaded hole 9a of another sleeve 9 made of electrically insulating material also forming nut for fixing the metal sleeve 7 to the metal end wall 1a of the collector 1.
  • the tube 4 of the heating cartridge 3, instead of being metallic may be made of electrically insulating material, such as for example ceramics.

Landscapes

  • Resistance Heating (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Claims (12)

  1. Tauchheizkörpervorrichtung mit einem Kollektor (1) in Form einer an ihren beiden Enden dicht verschlossenen Röhre, enthaltend eine zu erhitzende Wärmeübertragungsflüssigkeit (2) und eine im Kollektor (1) aufgenommene, mit der Wärmeübertragungsflüssigkeit (2) geflutete Heizpatrone (3) mit elektrischem Heizinnenwiderstand (5), der in der Patrone (3) versenkt ist, indem er elektrisch von dieser isoliert ist, dadurch gekennzeichnet, dass die Wärmeübertragungsflüssigkeit (2) elektrisch isolierend ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Wärmeübertragungsflüssigkeit (2) Mineralöl, vorzugsweise vom Typ Paraffinöl mit hohem Viskositätsindex ist.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Heizpatrone (3) im Kollektor (1) im wesentlichen koaxial zu diesem befestigt ist und dabei an einem ihrer Enden von einer Traghülse (7) abgestützt wird, die durch eine (1a) der Stirnwände des Kollektors (1) hindurch befestigt ist.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Traghülse (7) der Patrone (3) aus elektrisch isolierendem Material besteht und einen Zylinderabschnitt mit Außengewinde (7a) enthält, der in ein entsprechendes Gewindeloch (1 b) der Stirnwand (1a) des Kollektors eingreift, sowie einen Kragen (7b), der sich in der Stellung zum Sichern der Hülse (7) in der Stirnwand (1a) an die Außenseite der Stirnwand (1a) anlegt.
  5. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Traghülse (7) der Patrone (3) aus einem metallischen Material besteht und einen Zylinderabschnitt mit Außengewinde (7a) enthält, der in ein entsprechendes Gewindeloch (9b) einer weiteren Hülse (9) aus Isoliermaterial eingreift, die auch eine Mutter zum Fixieren der Hülse (7) an der metallischen Stirnwand (1a) des Kollektors bildet, sowie einen Kragen (7b), der sich in der Stellung zum Sichern der Hülse (7) in der weiteren Hülse (9) an die weitere Hülse (9) anlegt.
  6. Vorrichtung nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass die Heizpatrone (3) mittels Verschweißen oder Verkleben an der Traghülse (7) befestigt ist.
  7. Vorrichtung nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, dass die Heizpatrone (3) eine Zylinderröhre (4) enthält, die verdichtete Magnesia enthält, worin der elektrische Heizwiderstand (5) versenkt ist, dessen beide Enden mit zwei jeweiligen leitfähigen Versorgungsdrähten (6) verbunden sind, welche sich durch die Traghülse (7) erstrecken, indem sie von dieser nach außen vorstehen.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass die Heizpatrone (3) einen oder mehrere Ringe (8) aus elektrisch isolierendem Material enthält, die auf die Röhre (4) der Patrone (3) aufgepresst sind.
  9. Vorrichtung nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass das freie Ende der Heizpatrone (3) mit einer Kappe aus elektrisch isolierendem Material überdeckt ist.
  10. Vorrichtung nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass die Röhre (4) der Heizpatrone (3) und der Kollektor (1) aus Metall, beispielsweise aus Stahl bestehen.
  11. Vorrichtung nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass die Röhre (4) der Heizpatrone (3) aus einem elektrisch isolierenden Material, beispielsweise aus Keramik besteht.
  12. Verwendung der Tauchheizkörpervorrichtung wie in Anspruch 1 bis 11 definiert bei einem Wasserumlaufheizkörper.
EP99400854A 1998-04-09 1999-04-08 Tauchheizkörper zur Benutzung in Heizkörpern von Heisswasserkreislaufheizungen Expired - Lifetime EP0949846B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9804485 1998-04-09
FR9804485A FR2777410B1 (fr) 1998-04-09 1998-04-09 Dispositif formant thermoplongeur pouvant etre utilise notamment dans un radiateur de chauffage a circulation d'eau

Publications (2)

Publication Number Publication Date
EP0949846A1 EP0949846A1 (de) 1999-10-13
EP0949846B1 true EP0949846B1 (de) 2007-08-15

Family

ID=9525088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99400854A Expired - Lifetime EP0949846B1 (de) 1998-04-09 1999-04-08 Tauchheizkörper zur Benutzung in Heizkörpern von Heisswasserkreislaufheizungen

Country Status (5)

Country Link
EP (1) EP0949846B1 (de)
AT (1) ATE370635T1 (de)
DE (1) DE69936816T2 (de)
ES (1) ES2292226T3 (de)
FR (1) FR2777410B1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2809276B1 (fr) * 2000-05-17 2002-07-19 Acova Dispositif formant thermoplongeur pouvant etre utilise notamment dans un radiateur de chauffage a circulation d'eau
WO2002101303A1 (es) * 2001-06-08 2002-12-19 Corona Lopez Romulo Calentador para agua a base de un dispositivo termico electrico con aceite de silicon
GB2407479B (en) * 2003-10-29 2006-06-28 Martin Lister The hardy kettle
DE102007061837B3 (de) * 2007-12-20 2009-01-29 Robert Bosch Gmbh Heizvorrichtung mit Multifunktionsschutzmittel
CN102353147A (zh) * 2011-09-09 2012-02-15 罗晴海 一种电热水器热交换装置
DE102011057017A1 (de) * 2011-12-23 2013-06-27 Dbk David + Baader Gmbh Heizbaugruppe und Verfahren zum Herstellen einer Heizbaugruppe
CN104075367A (zh) * 2013-03-30 2014-10-01 昆山友进智能建筑工程有限公司 节能电热油汀取暖器
GB201407560D0 (en) * 2014-04-30 2014-06-11 Yorkshire Electric Radiators Ltd Improvements to radiator apparatuses

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985000084A1 (en) * 1983-06-17 1985-01-03 Hideaki Ito Electric heater and heat exchanger employing the same
FR2623357A1 (fr) * 1987-11-12 1989-05-19 Ego France Thermoplongeur a double paroi
FR2623685A1 (fr) * 1987-11-19 1989-05-26 Andre David Element chauffant electrique a tube en verre et a dispositif de securite detectant la defaillance de ce dernier
GB9012535D0 (en) * 1990-06-05 1990-07-25 Townsend David W Coated heating element

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
FR2777410B1 (fr) 2002-06-28
DE69936816T2 (de) 2008-05-08
ATE370635T1 (de) 2007-09-15
FR2777410A1 (fr) 1999-10-15
EP0949846A1 (de) 1999-10-13
ES2292226T3 (es) 2008-03-01
DE69936816D1 (de) 2007-09-27

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