EP0949846A1 - Tauchheizkörper zur Benutzung in Heizkörpern von Heisswasserkreislaufheizungen - Google Patents

Tauchheizkörper zur Benutzung in Heizkörpern von Heisswasserkreislaufheizungen Download PDF

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Publication number
EP0949846A1
EP0949846A1 EP99400854A EP99400854A EP0949846A1 EP 0949846 A1 EP0949846 A1 EP 0949846A1 EP 99400854 A EP99400854 A EP 99400854A EP 99400854 A EP99400854 A EP 99400854A EP 0949846 A1 EP0949846 A1 EP 0949846A1
Authority
EP
European Patent Office
Prior art keywords
cartridge
sleeve
heating
tube
electrically insulating
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
EP99400854A
Other languages
English (en)
French (fr)
Other versions
EP0949846B1 (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
Original Assignee
Ateliers de Construction de Vaux Andigny ACOVA
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 Ateliers de Construction de Vaux Andigny ACOVA filed Critical Ateliers de Construction de Vaux Andigny ACOVA
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 a device forming immersion heater which can be used in particular in a water circulation heating radiator.
  • the heating cartridge includes a body metallic cylindrical tubular, for example steel, in which is compacted magnesia isolating the electrical resistance of the cartridge tube.
  • this known device has the major drawback not to ensure perfect security from the point of view electrical insulation because the internal electrical resistance of the heating cartridge may accidentally come into contact with the inner wall of the metal tube of the cartridge, for example due to spalling of the magnesia due to a lack of compaction thereof or a crack in the cartridge tube through which can penetrate the heat transfer fluid to disintegrate the compacted magnesia, so that the short circuit current reaching the metal collector can cause electric shocks to the user when the device is integrated in a heating radiator metallic with water circulation.
  • the object of the present invention is to eliminate the disadvantages of the above devices known in proposing a device forming an immersion heater comprising a collector in the form of a tube closed tightly to both ends and containing a heat transfer liquid to heat and, housed in the collector while bathing in the heat transfer liquid, a heating cartridge with internal electric heater internal flooded in the cartridge being electrically isolated from this and which is characterized in that the liquid coolant is electrically insulating.
  • the heat transfer liquid is mineral oil, preference of the paraffinic type with high index of viscosity.
  • the heating cartridge is fixed in the collector substantially coaxial with it by being brought to one of its ends by a support sleeve fixed to through one of the end walls of the manifold.
  • the cartridge support sleeve is made of insulating material and includes a part externally threaded cylindrical engaging in a corresponding tapped hole in the end wall of the collector and a flange bearing on the face outside of the end wall in the locking position of the sleeve in the end wall.
  • the support sleeve of the cartridge is made of metallic material and includes an externally engaging cylindrical threaded part in a corresponding tapped hole of another sleeve in insulating material also forming the fixing nut of the sleeve at the metal end wall of the manifold and a collar bearing on the other sleeve in sleeve locking position in the other sleeve.
  • the heating cartridge is fixed to the support sleeve by welding or gluing.
  • the heating cartridge includes a cylindrical tube containing compacted magnesia in which is submerged the electric heating resistance, both of which ends are respectively connected to two wires supply conductors passing through the sleeve support by projecting outside of it.
  • the heating cartridge includes one or more rings made of electrically insulating material press fitted onto the cartridge tube.
  • the free end of the cartridge is covered with a cap made 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.
  • Figure 1 is a longitudinal sectional view of the device forming an immersion heater of the invention.
  • Figure 2 is a sectional view along line II-II of figure 1.
  • Figure 3 is a longitudinal sectional view of a variant of the device of the invention.
  • the immersion heater device will be described in application to a circulation heating radiator of water in which it is integrated to heat the water circulating but it is understood that it can be used for other different applications requiring the heating of a liquid or a fluid.
  • the device forming immersion heater includes a tube-shaped manifold 1 cylindrical metal closed tightly to 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 heat transfer liquid 2, a heating cartridge 3 for heating the liquid coolant 2 and constituted by a cylindrical tube metallic 4 in which there is a resistor electric internal heater 5 embedded in magnesia M compacted in tube 4 to electrically insulate resistance 5 of tube 4.
  • Resistance 5 is made up of a conducting wire wound in a spiral with contiguous turns and has substantially the shape of an elongated U so that these two free ends leaving the tube 4 are connected respectively to two external conductive wires supply 6.
  • the heat transfer liquid 2 is electrically insulating and preferably consists of mineral oil, preferably of the paraffinic type to high viscosity index.
  • oil mineral is that of the company SHELL marketed under the name "SHELLFLEX" type 110 FC.
  • the heating cartridge 3 is fixed in the collector 1 substantially coaxially with it by having one of its free floating ends and its opposite end integral with a support sleeve 7 made in one electrically insulating material attached through one the end walls of manifold 1.
  • the support sleeve 7 comprises a part cylindrical 7a externally threaded to engage in a corresponding tapped hole 1b passing through the wall end 1a of the manifold 1 and a part forming flange 7b coming to bear on the external face of the end wall la when the support sleeve 7 is blocked by screwing into the wall.
  • the sleeve of support 7 further comprises a cylindrical end 7c in which is secured, by welding or by bonding, the corresponding end of the cartridge heating 3.
  • the power wires 6 connected to the two ends of heating resistor 5 pass through a internal drilling of the support sleeve 7 to make protrusion outside the manifold 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 while being fitted to force on it at a distant distance one of the other. If applicable, the free end of the heating cartridge 3 can be covered with a cap (not shown) made of electrically insulating material.
  • the rings 8 and this cap prevent contact accidental electrical connection between tube 4 and manifold 1.
  • the rings 8 and the cap are made in a material which also makes it possible to resist operating temperatures of the heating cartridge 3.
  • the invention described above thus makes it possible to produce a immersion heater consisting of a heating cartridge known per se as described at the beginning of the description and having electrical insulation characteristics extremely high ensuring, thanks to the liquid insulating coolant, a very high degree of security users, especially when the immersion heater is used in a circulation heating radiator of water.
  • the support sleeve 7, at instead of being made of an electrically insulating material can be made of metallic material coated with insulating material.
  • Figure 3 shows the sleeve 7 in metallic material with structure identical to that of sleeve 7 of FIG. 1 and the cylindrical part of which externally threaded 7a is engaged in a hole corresponding thread 9a of another sleeve 9 of material electrically insulating also forming a nut fixing of the metal sleeve 7 to the end wall metallic the of the collector 1.
  • the tube 4 of the heating cartridge 3, instead of being metallic can be made of material electrically insulating, such as for example ceramic.

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)
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 true EP0949846A1 (de) 1999-10-13
EP0949846B1 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)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1156704A1 (de) * 2000-05-17 2001-11-21 Acova Tauchheizkörper formende Vorrichtung zur Verwendung insbesondere in Heizkörpern von Heisswasserkreislaufheizungen
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
GB2407479A (en) * 2003-10-29 2005-05-04 Martin Lister Kettle for boiling water
EP2073602A3 (de) * 2007-12-20 2009-11-11 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
GB2527901B (en) * 2014-04-30 2018-12-26 Msa Engineering Systems Ltd Improvements to Radiator Apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (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
EP0317435A1 (de) * 1987-11-19 1989-05-24 David André Isoliertes elektrisches Heizelement mit einer Sicherungsvorrichtung, welche ein Ausfallen der elektrischen Isolierung aufspürt
GB2244898A (en) * 1990-06-05 1991-12-11 David William Townsend Scale inhibiting plastics coating of immersion heater or heat exchanger

Patent Citations (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
EP0317435A1 (de) * 1987-11-19 1989-05-24 David André Isoliertes elektrisches Heizelement mit einer Sicherungsvorrichtung, welche ein Ausfallen der elektrischen Isolierung aufspürt
GB2244898A (en) * 1990-06-05 1991-12-11 David William Townsend Scale inhibiting plastics coating of immersion heater or heat exchanger

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1156704A1 (de) * 2000-05-17 2001-11-21 Acova Tauchheizkörper formende Vorrichtung zur Verwendung insbesondere in Heizkörpern von Heisswasserkreislaufheizungen
FR2809276A1 (fr) * 2000-05-17 2001-11-23 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
GB2407479A (en) * 2003-10-29 2005-05-04 Martin Lister Kettle for boiling water
GB2407479B (en) * 2003-10-29 2006-06-28 Martin Lister The hardy kettle
EP2073602A3 (de) * 2007-12-20 2009-11-11 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
GB2527901B (en) * 2014-04-30 2018-12-26 Msa Engineering Systems Ltd Improvements to Radiator Apparatus

Also Published As

Publication number Publication date
FR2777410B1 (fr) 2002-06-28
DE69936816T2 (de) 2008-05-08
EP0949846B1 (de) 2007-08-15
ATE370635T1 (de) 2007-09-15
FR2777410A1 (fr) 1999-10-15
ES2292226T3 (es) 2008-03-01
DE69936816D1 (de) 2007-09-27

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