EP0949846A1 - Immersion heater for use in radiators of a heating system with hot water circulation - Google Patents

Immersion heater for use in radiators of a heating system with hot water circulation 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
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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
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German (de)
French (fr)
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EP0949846B1 (en
Inventor
Michel Seba
Nirong Chuop Leak
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Zehnder Group Participacions SAS
Original Assignee
Ateliers de Construction de Vaux Andigny ACOVA
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Publication of EP0949846A1 publication Critical patent/EP0949846A1/en
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Publication of EP0949846B1 publication Critical patent/EP0949846B1/en
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    • 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)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)

Abstract

The immersion heater has a heating cartridge (3), formed with a sleeve (4) housing and an electric resistance element (5) fixed inside an external collector (1) that contains a heat transfer fluid (2). This fluid has good electrical insulation properties, and is usually a mineral oil.

Description

La présente invention concerne un dispositif formant thermoplongeur pouvant être utilisé notamment dans un radiateur de chauffage à circulation d'eau.The present invention relates to a device forming immersion heater which can be used in particular in a water circulation heating radiator.

On connaít un dispositif formant thermoplongeur comprenant un collecteur fermé de façon étanche à ses deux extrémités et contenant un liquide caloporteur à chauffer et, logée dans le collecteur en baignant dans le liquide caloporteur, une cartouche chauffante à résistance électrique chauffante noyée dans la cartouche en étant isolée électriquement de celle-ci. Plus précisément, la cartouche chauffante comprend un corps tubulaire cylindrique métallique, par exemple en acier, dans lequel est compactée de la magnésie isolant la résistance électrique du tube de la cartouche.We know a device forming immersion heater comprising a collector closed tightly to its two ends and containing a heat transfer liquid heat and, housed in the collector while bathing in the heat transfer liquid, a heating cartridge with electric heating element embedded in the cartridge by being electrically isolated from it. More precisely, 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.

Cependant, ce dispositif connu a pour inconvénient majeur de ne pas assurer une sécurité parfaite du point de vue isolation électrique car la résistance électrique interne de la cartouche chauffante peut accidentellement venir en contact avec la paroi interne du tube métallique de la cartouche, par exemple à cause d'un effritement de la magnésie dû à un défaut de compactage de celle-ci ou d'une fissure du tube de la cartouche à travers laquelle peut pénétrer le fluide caloporteur pour désagréger la magnésie compactée, de sorte que le courant de court-circuit arrivant jusqu'au collecteur métallique peut provoquer des décharges électriques à l'usager lorsque le dispositif est intégré dans un radiateur de chauffage métallique à circulation d'eau. However, 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.

Pour améliorer le degré de sécurité d'un tel dispositif thermoplongeur, on a proposé de réaliser la cartouche chauffante en deux tubes métalliques cylindriques concentriques, isolés électriquement l'un de l'autre par de la magnésie compactée, le tube interne comportant la résistance électrique de chauffage noyée dans de la magnésie compactée pour l'isoler du tube interne.To improve the security level of such a device immersion heater, it has been proposed to produce the cartridge heating in two cylindrical metal tubes concentric, electrically isolated from each other by compacted magnesia, the inner tube having the electrical heating resistance embedded in compacted magnesia to isolate it from the inner tube.

Cependant, si cette cartouche chauffante à double isolation assure le degré souhaité de sécurité, elle est très coûteuse à réaliser puisqu'elle nécessite non seulement les deux tubes concentriques interne et externe, mais également de compacter de la magnésie dans le tube interne pour noyer la résistance électrique et entre les deux tubes interne et externe pour les isoler l'un de l'autre.However, if this dual heating cartridge insulation provides the desired degree of security it is very expensive to carry out since it requires not only the two internal concentric tubes 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 one of the other.

La présente invention a pour but d'éliminer les inconvénients des dispositifs ci-dessus connus en proposant un dispositif formant thermoplongeur comprenant un collecteur en forme de tube fermé de façon étanche à ses deux extrémités et contenant un liquide caloporteur à chauffer et, logée dans le collecteur en baignant dans le liquide caloporteur, une cartouche chauffante à résistance électrique interne chauffante interne noyée dans la cartouche en étant isolée électriquement de celle-ci et qui est caractérisé en ce que le liquide caloporteur est électriquement isolant. 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.

Le liquide caloporteur est de l'huile minérale, de préférence du type paraffinique à haut indice de viscosité.The heat transfer liquid is mineral oil, preference of the paraffinic type with high index of viscosity.

La cartouche chauffante est fixée dans le collecteur sensiblement coaxialement à celui-ci en étant portée à l'une de ses extrémités par un manchon de support fixé à travers l'une des parois d'extrémité du collecteur.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.

Avantageusement, le manchon de support de la cartouche est en matériau isolant et comprend une partie cylindrique filetée extérieurement s'engageant dans un trou taraudé correspondant de la paroi d'extrémité du collecteur et une collerette venant en appui sur la face externe de la paroi d'extrémité en position de blocage du manchon dans la paroi d'extrémité.Advantageously, 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.

Selon une variante de réalisation, le manchon de support de la cartouche est en matériau métallique et comprend une partie cylindrique filetée extérieurement s'engageant dans un trou taraudé correspondant d'un autre manchon en matériau isolant formant également écrou de fixation du manchon à la paroi d'extrémité métallique du collecteur et une collerette venant en appui sur l'autre manchon en position de blocage du manchon dans l'autre manchon.According to an alternative embodiment, 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.

De préférence, la cartouche chauffante est fixée au manchon de support par soudage ou par collage. Preferably, the heating cartridge is fixed to the support sleeve by welding or gluing.

La cartouche chauffante comprend un tube cylindrique contenant de la magnésie compactée dans laquelle est noyée la résistance électrique chauffante dont les deux extrémités sont reliées respectivement à deux fils conducteurs d'alimentation traversant le manchon de support en faisant saillie à l'extérieur de celui-ci.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.

La cartouche chauffante comprend une ou plusieurs bagues en matériau électriquement isolant emmanchée à force sur le tube de la cartouche.The heating cartridge includes one or more rings made of electrically insulating material press fitted onto the cartridge tube.

L'extrémité libre de la cartouche est recouverte d'un capuchon en matériau électriquement isolant.The free end of the cartridge is covered with a cap made of electrically insulating material.

Le tube de la cartouche chauffante et le collecteur sont métalliques, par exemple en acier.The tube of the heating cartridge and the collector are metallic, for example steel.

Selon une variante, le tube de la cartouche chauffante est en un matériau électriquement isolant, par exemple en céramique.Alternatively, the tube of the heating cartridge is made of an electrically insulating material, for example ceramic.

L'invention sera mieux comprise et d'autres buts, caractéristiques, détails et avantages de celle-ci apparaítront plus clairement au cours de la description explicative qui va suivre faite en référence aux dessins schématiques annexés donnés uniquement à titre d'exemple illustrant un mode de réalisation de l'invention et dans lesquels : The invention will be better understood and other aims, features, details and benefits of it will appear more clearly during the description explanatory which will follow made with reference to the drawings attached diagrams given only by way of example illustrating an embodiment of the invention and in which :

La figure 1 est une vue en coupe longitudinale du dispositif formant thermoplongeur de l'invention.Figure 1 is a longitudinal sectional view of the device forming an immersion heater of the invention.

La figure 2 est une vue en coupe suivant la ligne II-II de la figure 1.Figure 2 is a sectional view along line II-II of figure 1.

La figure 3 est une vue en coupe longitudinale d'une variante de réalisation du dispositif de l'invention.Figure 3 is a longitudinal sectional view of a variant of the device of the invention.

Le dispositif formant thermoplongeur va être décrit dans l'application à un radiateur de chauffage à circulation d'eau dans lequel il est intégré pour chauffer l'eau circulant, mais il est bien entendu qu'il peut être utilisé pour d'autres applications différentes nécessitant le chauffage d'un liquide ou d'un fluide.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.

En se reportant aux figures 1 et 2, le dispositif formant thermoplongeur comprend un collecteur 1 en forme de tube cylindrique métallique fermé de façon étanche à ses deux extrémités et contenant un liquide caloporteur à chauffer 2.Referring to Figures 1 and 2, 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.

Le dispositif comprend en outre, logé dans le collecteur 1 en baignant dans le liquide caloporteur 2, une cartouche chauffante 3 permettant de chauffer le liquide caloporteur 2 et constituée par un tube cylindrique métallique 4 dans lequel se trouve une résistance électrique interne chauffante 5 noyée dans de la magnésie M compactée dans le tube 4 afin d'isoler électriquement la résistance 5 du tube 4. La résistance 5 est constituée d'un fil conducteur enroulé en spirale à spires jointives et a sensiblement la forme d'un U allongé de façon que ces deux extrémités libres sortant du tube 4 soient reliées respectivement à deux fils conducteurs externes d'alimentation 6.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.

Selon l'invention, le liquide caloporteur 2 est électriquement isolant et est de préférence constitué par de l'huile minérale, de préférence du type paraffinique à haut indice de viscosité. A titre d'exemple, l'huile minérale est celle de la Société SHELL commercialisée sous la dénomination « SHELLFLEX » type 110 FC.According to the invention, the heat transfer liquid 2 is electrically insulating and preferably consists of mineral oil, preferably of the paraffinic type to high viscosity index. For example, oil mineral is that of the company SHELL marketed under the name "SHELLFLEX" type 110 FC.

La cartouche chauffante 3 est fixée dans le collecteur 1 sensiblement coaxialement à celui-ci en ayant l'une de ses extrémités libre flottante et son extrémité opposée solidaire d'un manchon de support 7 réalisé en un matériau électriquement isolant fixé à travers l'une la des parois d'extrémité du collecteur 1. Comme représenté en figure 1, le manchon de support 7 comprend une partie cylindrique 7a filetée extérieurement pour s'engager dans un trou taraudé correspondant 1b traversant la paroi d'extrémité 1a du collecteur 1 et une partie formant collerette 7b venant en appui sur la face externe de la paroi d'extrémité la lorsque le manchon de support 7 est bloqué par vissage dans la paroi la. Le manchon de support 7 comprend en outre une extrémité cylindrique 7c dans laquelle est solidarisée, par soudage ou par collage, l'extrémité correspondante de la cartouche chauffante 3. Les fils d'alimentation 6 reliés aux deux extrémités de la résistance chauffante 5 traversent un percage interne du manchon de support 7 pour faire saillie à l'extérieur du collecteur 1.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. As shown in FIG. 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.

La cartouche chauffante 3 comprend une ou plusieurs bagues 8, dans le cas présent au nombre de deux, réalisées en un matériau électriquement isolant et fixées sur le tube 4 de la cartouche 3 en étant emmanchées à force sur celui-ci à une distance éloignée l'une de l'autre. Le cas échéant, l'extrémité libre de la cartouche chauffante 3 peut être recouverte d'un capuchon (non représenté) en matériau électriquement isolant. Les bagues 8 et ce capuchon permettent d'éviter un contact électrique accidentel entre le tube 4 et le collecteur 1. Bien entendu, les bagues 8 et le capuchon sont réalisés en une matière permettant également de résister aux températures de fonctionnement de la cartouche chauffante 3.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. Of course, 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.

L'invention ci-dessus décrite permet ainsi de réaliser un thermoplongeur constitué par une cartouche chauffante connue en soi comme décrit au début de la description et présentant des caractéristiques d'isolation électrique extrêmement élevées assurant, grâce au liquide caloporteur isolant, un degré très élevé de sécurité d'usagers, notamment lorsque le thermoplongeur est utilisé dans un radiateur de chauffage à circulation d'eau. 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.

Diverses modifications peuvent être apportées au dispositif thermoplongeur sans sortir du cadre de la présente invention. Ainsi, le manchon de support 7, au lieu d'être réalisé en un matériau électriquement isolant peut être réalisé en matériau métallique revêtu de matière isolante. La figure 3 représente le manchon 7 en matériau métallique de structure identique à celle du manchon 7 de la figure 1 et dont la partie cylindrique filetée extérieurement 7a est engagée dans un trou taraudé correspondant 9a d'un autre manchon 9 en matériau électriquement isolant formant également écrou de fixation du manchon métallique 7 à la paroi d'extrémité métallique la du collecteur 1. Selon une autre variante de réalisation, le tube 4 de la cartouche chauffante 3, au lieu d'être métallique, peut être réalisé en matériau électriquement isolant, tel que par exemple de la céramique.Various modifications can be made to the immersion heater without departing from the scope of the present invention. Thus, 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. According to another variant embodiment, the tube 4 of the heating cartridge 3, instead of being metallic, can be made of material electrically insulating, such as for example ceramic.

Claims (12)

Dispositif formant thermoplongeur comprenant un collecteur (1) en forme de tube fermé de façon étanche à ses deux extrémités et contenant un liquide caloporteur à chauffer (2) et, logée dans le collecteur (1) en baignant dans le liquide caloporteur (2), une cartouche chauffante (3) à résistance électrique interne chauffante (5) noyée dans la cartouche (3) en étant isolée électriquement de celle-ci, caractérisé en ce que le liquide caloporteur (2) est électriquement isolant.Device forming an immersion heater comprising a collector (1) in the form of a tube closed in a sealed manner both ends and containing a heat transfer liquid to heat (2) and, housed in the collector (1) while bathing in the heat transfer liquid (2), a heating cartridge (3) with internal electric heating resistance (5) embedded in the cartridge (3) being electrically isolated from this, characterized in that the heat transfer liquid (2) is electrically insulating. Dispositif selon la revendication 1, caractérisé en ce que le liquide caloporteur (2) est de l'huile minérale, de préférence du type paraffinique à haut indice de viscosité.Device according to claim 1, characterized in that that the heat transfer liquid (2) is mineral oil, preferably of the paraffinic type with a high index of viscosity. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la cartouche chauffante (3) est fixée dans le collecteur (1) sensiblement coaxialement à celui-ci en étant portée à l'une de ses extrémités par un manchon de support (7) fixé à travers l'une (1a) des parois d'extrémité du collecteur (1).Device according to claim 1 or 2, characterized in that the heating cartridge (3) is fixed in the manifold (1) substantially coaxial therewith being carried at one of its ends by a sleeve of support (7) fixed through one (1a) of the walls end of the manifold (1). Dispositif selon la revendication 3, caractérisé en ce que le manchon de support (7) de la cartouche (3) est en matériau électriquement isolant et comprend une partie cylindrique filetée extérieurement (7a) s'engageant dans un trou taraudé correspondant (1b) de la paroi d'extrémité (1a) du collecteur (1) et une collerette (7b) venant en appui sur la face externe de la paroi d'extrémité (1a) en position de blocage du manchon (7) dans la paroi d'extrémité (1a).Device according to claim 3, characterized in that that the support sleeve (7) of the cartridge (3) is in electrically insulating material and includes a part externally threaded cylindrical (7a) engaging in a corresponding tapped hole (1b) in the wall end (1a) of the manifold (1) and a flange (7b) coming to bear on the external face of the wall end (1a) in the locking position of the sleeve (7) in the end wall (1a). Dispositif selon la revendication 3, caractérisé en ce que le manchon de support (7) de la cartouche (3) est en matériau métallique et comprend une partie cylindrique filetée extérieurement (7a) s'engageant dans un trou taraudé correspondant (9a) d'un autre manchon (9) en matériau isolant formant également écrou de fixation du manchon (7) à la paroi d'extrémité métallique (1a) du collecteur (1) et une collerette (7b) venant en appui sur l'autre manchon (9) en position de blocage du manchon (7) dans l'autre manchon (9).Device according to claim 3, characterized in that that the support sleeve (7) of the cartridge (3) is in metallic material and includes a cylindrical part externally threaded (7a) engaging a hole corresponding thread (9a) of another sleeve (9) in insulating material also forming the fixing nut of the sleeve (7) at the metal end wall (1a) of the collector (1) and a collar (7b) bearing on the other sleeve (9) in the sleeve locking position (7) in the other sleeve (9). Dispositif selon l'une des revendications 3 à 5, caractérisé en ce que la cartouche chauffante (3) est fixée au manchon de support (7) par soudage ou par collage.Device according to one of claims 3 to 5, characterized in that the heating cartridge (3) is fixed to the support sleeve (7) by welding or by collage. Dispositif selon l'une des revendications 3 à 6, caractérisé en ce que la cartouche chauffante (3) comprend un tube cylindrique (4) contenant de la magnésie compactée dans laquelle est noyée la résistance électrique chauffante (5) dont les deux extrémités sont reliées respectivement à deux fils conducteurs d'alimentation (6) traversant le manchon de support (7) en faisant saillie à l'extérieur de celui-ci. Device according to one of claims 3 to 6, characterized in that the heating cartridge (3) includes a cylindrical tube (4) containing magnesia compacted in which the resistance is embedded electric heater (5) whose two ends are connected respectively to two conductive wires feed (6) through the support sleeve (7) protruding outside of it. Dispositif selon la revendication 7, caractérisé en ce que la cartouche chauffante (3) comprend une ou plusieurs bagues (8) en matériau électriquement isolant emmanchées à force sur le tube (4) de la cartouche (3).Device according to claim 7, characterized in that that the heating cartridge (3) comprises one or more rings (8) of electrically insulating material fitted by force on the tube (4) of the cartridge (3). Dispositif selon la revendication 7 ou 8, caractérisé en ce que l'extrémité libre de la cartouche chauffante (3) est recouverte d'un capuchon en matériau électriquement isolant.Device according to claim 7 or 8, characterized in that the free end of the heating cartridge (3) is covered with a material cap electrically insulating. Dispositif selon l'une des revendications 7 à 9, caractérisé en ce que le tube (4) de la cartouche chauffante (3) et le collecteur (1) sont métalliques, par exemple en acier.Device according to one of claims 7 to 9, characterized in that the tube (4) of the cartridge heater (3) and the collector (1) are metallic, for steel example. Dispositif selon l'une des revendications 7 à 9, caractérisé en ce que le tube (4) de la cartouche chauffante (3) est en un matériau électriquement isolant, par exemple en céramique.Device according to one of claims 7 to 9, characterized in that the tube (4) of the cartridge heater (3) is made of an electrically insulating material, for example ceramic. Utilisation du dispositif thermoplongeur tel que défini aux revendications 1 à 11 dans un radiateur de chauffage à circulation d'eau.Use of the immersion heater device such as defined in claims 1 to 11 in a heat sink water circulation heating.
EP99400854A 1998-04-09 1999-04-08 Immersion heater for use in radiators of a heating system with hot water circulation Expired - Lifetime EP0949846B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9804485A FR2777410B1 (en) 1998-04-09 1998-04-09 THERMOPLONGER FORMING DEVICE THAT CAN BE USED IN PARTICULAR IN A WATER CIRCULATION HEATER
FR9804485 1998-04-09

Publications (2)

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

Family

ID=9525088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99400854A Expired - Lifetime EP0949846B1 (en) 1998-04-09 1999-04-08 Immersion heater for use in radiators of a heating system with hot water circulation

Country Status (5)

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

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1156704A1 (en) * 2000-05-17 2001-11-21 Acova Immersion heating device that could be used particularly in a water circulating heating radiator
WO2002101303A1 (en) * 2001-06-08 2002-12-19 Corona Lopez Romulo Water heater based on a thermoelectric device using silicon oil
GB2407479A (en) * 2003-10-29 2005-05-04 Martin Lister Kettle for boiling water
EP2073602A3 (en) * 2007-12-20 2009-11-11 Robert Bosch GmbH Heating device with multifunctional protection agent
CN102353147A (en) * 2011-09-09 2012-02-15 罗晴海 Heat exchange device for electric water heater
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 (en) * 2011-12-23 2013-06-27 Dbk David + Baader Gmbh Heating assembly for heating e.g. ammonia in ammonia storage and delivery system for diesel engine of lorry, has coupling layer arranged in circumference gap between sleeve wall and cartridge wall for thermal and/or mechanical coupling
CN104075367A (en) * 2013-03-30 2014-10-01 昆山友进智能建筑工程有限公司 Energy-saving electrical oil heater

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 (en) * 1987-11-12 1989-05-19 Ego France Double-walled immersion heater
EP0317435A1 (en) * 1987-11-19 1989-05-24 David André Insulated electrical heating element with a security device for detecting failure of the electrical insulation
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 (en) * 1987-11-12 1989-05-19 Ego France Double-walled immersion heater
EP0317435A1 (en) * 1987-11-19 1989-05-24 David André Insulated electrical heating element with a security device for detecting failure of the electrical insulation
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 (en) * 2000-05-17 2001-11-21 Acova Immersion heating device that could be used particularly in a water circulating heating radiator
FR2809276A1 (en) * 2000-05-17 2001-11-23 Acova THERMOPLONGER FORMING DEVICE THAT CAN BE USED IN PARTICULAR IN A WATER CIRCULATION HEATER
WO2002101303A1 (en) * 2001-06-08 2002-12-19 Corona Lopez Romulo Water heater based on a thermoelectric device using silicon oil
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 (en) * 2007-12-20 2009-11-11 Robert Bosch GmbH Heating device with multifunctional protection agent
CN102353147A (en) * 2011-09-09 2012-02-15 罗晴海 Heat exchange device for electric water heater
GB2527901B (en) * 2014-04-30 2018-12-26 Msa Engineering Systems Ltd Improvements to Radiator Apparatus

Also Published As

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

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