EP2134143B1 - Elément de chauffe de résistance électrique pour un dispositif de chauffage destiné à chauffer un milieu gazeux s'écoulant - Google Patents

Elément de chauffe de résistance électrique pour un dispositif de chauffage destiné à chauffer un milieu gazeux s'écoulant Download PDF

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Publication number
EP2134143B1
EP2134143B1 EP08010426A EP08010426A EP2134143B1 EP 2134143 B1 EP2134143 B1 EP 2134143B1 EP 08010426 A EP08010426 A EP 08010426A EP 08010426 A EP08010426 A EP 08010426A EP 2134143 B1 EP2134143 B1 EP 2134143B1
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EP
European Patent Office
Prior art keywords
heating
heating element
heating resistor
resistance heating
flow
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Application number
EP08010426A
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German (de)
English (en)
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EP2134143A1 (fr
Inventor
Ulrich Gubler
Reto Zurbuchen
Michel Prestat
Ulrich Vogt
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Leister Process Technologies
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Leister Process Technologies
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Publication date
Application filed by Leister Process Technologies filed Critical Leister Process Technologies
Priority to EP08010426A priority Critical patent/EP2134143B1/fr
Priority to DE502008002030T priority patent/DE502008002030D1/de
Priority to AT08010426T priority patent/ATE492140T1/de
Priority to JP2009125138A priority patent/JP4977844B2/ja
Priority to US12/478,825 priority patent/US20090304372A1/en
Priority to CN2009102034001A priority patent/CN101603733B/zh
Publication of EP2134143A1 publication Critical patent/EP2134143A1/fr
Application granted granted Critical
Publication of EP2134143B1 publication Critical patent/EP2134143B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0423—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between hand-held air guns
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • 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
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/141—Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds
    • 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
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/16—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being mounted on an insulating base
    • 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
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/018—Heaters using heating elements comprising mosi2
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient

Definitions

  • the invention relates to an electrical resistance heating element for a heating device for heating a gaseous medium, comprising at least one extending substantially in the longitudinal direction of the electrical resistance heating element heating resistor, where the medium flows past and is heated.
  • the resistance heating element has at least one flow channel extending along the heating resistor, through which the gaseous medium can pass from a channel inlet side to a channel outlet side of the resistance heating element, wherein the heating resistor has an electrically conductive ceramic material for the power line.
  • the invention also relates to a heating device for a flowing gaseous medium, which is equipped with such an electrical resistance heating element.
  • heating devices are understood in particular to be heating devices, modules or systems in which the electrical resistance heating element is arranged in a heating tube. At one end, for example, air or gas is injected and at the other end exits the heated air or gas stream.
  • air flow generated by a fan provided on the heater or the heater of be supplied to an external air flow generator or emanate the gas stream from a preferably under pressure gas reservoir.
  • Such heaters are well known and find extensive applications in industry and craft.
  • a cold stream of the gaseous medium is introduced to the resistance heating element in these devices and then passed through the energized heating element and / or along this, the cold medium by contact with the hot heating resistance increasingly from the inlet side is heated to the exit side of the heating resistor.
  • the flowing gaseous medium passes through the heating element in one or more flow channels, which enclose the at least one heating resistor.
  • a heater in the form of a hot air device in which the resistance heating element is located in a heating tube.
  • the heating element has a support made of a high-temperature-resistant ceramic material, which is held via a central pin on a side facing the fan side connecting head.
  • the electrical connection of the heating resistor which is formed by helically extending heating wires in a central air duct, also takes place via this connection head.
  • On the air outlet side of the heating element is still a thin final ceramic plate, which is also held by the central pin. Both the connection head and the end plate have openings for the air flow, so that it can pass unhindered the air duct with the heating resistor.
  • the heating wire usually burns through.
  • the heating element is thus unusable.
  • the too low air flow can be caused for example by failure of the blower or by narrowing the air inlet or air outlet cross section of the hot air device.
  • special electrical protection measures are required to protect the heating wire from unwanted overheating.
  • the heating air devices available on the market usually have a thermal sensor or switch, which throttles or interrupts the power supply to the heating resistor in case of overheating.
  • the DE 10 12 675 A1 discloses a PCT ceramic flow rate electrical resistance heating element which is particularly suitable for heating fluid flow at small cross-sections and low throughput.
  • the heating element has an elongated profile body in the flow direction, which has a substantially constant cross-sectional area and electrode layers in the longitudinal direction, through which the heating current is passed through the walls of the profile body substantially perpendicular to the flow direction of the flowing liquid.
  • the walls have consistently a substantially the same, the current path corresponding thickness and provided with electrode layers heating ribs which protrude into the flow channel.
  • the US Pat. No. 6,442,341 B1 also teaches a water heater for liquids.
  • the water heater described therein has a resistance heating element which is embedded in a metallic housing.
  • a flow passage for the liquid extends at a distance parallel to the one heating element.
  • the resistance heating element itself has no integrated flow channels and is integrally connected to the housing over its entire surface. The heat transfer from the heating element to the flowing liquid takes place indirectly over a portion of the housing in which extends the tubular flow channel, wherein the housing is made of a highly thermally conductive metal.
  • the EP 0 899 985 A1 deals with a water heater for heating liquid in a closed circuit of a motor vehicle.
  • the instantaneous water heater comprises at least one heating element with at least one channel, through which the liquid to be heated flows, and with at least one PCT heating element for heating the closely adjacent heating element.
  • the structure and operation corresponds essentially to that of US Pat. No. 6,442,341 B1 known water heater. It differs from this by several flow channels and several provided heating elements.
  • the following invention has for its object to propose an improved electrical resistance heating element for a heater for a gaseous flowing medium, in which the risk of overheating is reduced even without special protective measures.
  • the heating resistor of the electrical resistance heating element is rod-shaped, wherein the heating resistor is held by arranged on the channel inlet side and the channel outlet side of the resistance heating element support plates in which the flow channel continues.
  • the heating resistor is positively engaged with the carrier plates at its ends.
  • a massive heating resistor whose longitudinal extent is formed significantly larger than the transverse extent.
  • the cross-sectional shape is arbitrary and can vary over the longitudinal extent.
  • the heating resistor can also be two or more parallel to each other in the longitudinal direction Have sections that are connected to each other so that they form a current path.
  • the heating resistor has an electrically conductive ceramic material for the power line.
  • the conductive ceramic material alone may form the ceramic heating resistor or be provided as a sheath of a ceramic rod made of an electrically non-conductive ceramic material.
  • Such a heating resistor has a high mechanical and electrical wear and overheating resistance, allowing a long service life.
  • the ceramic materials used also have excellent properties in terms of thermal and electrical conductivity.
  • the current flow through the heating resistor can be influenced by the conductivity of the ceramic as well as by the geometry of the ceramic heating element become.
  • the conductivity of the ceramic is adjustable by changing its conductive and non-conductive substance shares in a wide range. Another advantage is that over known heating elements higher temperatures and faster temperature changes are possible.
  • the electrical heating element according to the invention is provided for example for an air heater, which operates with the usual voltages of 48V, as they occur in ships or aircraft, or of 110 V, 230 V or 380 V, as it provides the power grid of network operators can be.
  • the electrical resistance of the ceramic rod-shaped heating resistor must be sufficiently large. This can be achieved on the one hand with a high resistivity of the electrically conductive ceramic material and / or on the other hand by the geometric design of the ceramic heating resistor.
  • the electrical resistance heating element in which the conductive ceramic material has a resistivity between 0.01 and 1.0 ⁇ ⁇ cm and / or the ratio of the length to the cross-sectional area of the ceramic material of the heating resistor is between 1 and 500 cm -1 ,
  • the rod-shaped heating resistor is advantageously formed U-shaped. This doubles the length of the ceramic heater rod and thus its electrical resistance.
  • a plurality of, preferably U-shaped heating resistors may be provided. These can vary depending on the Voltage supply level and the desired power to be electrically connected in series or in parallel.
  • a metal layer For electrical contacting of the rod-shaped heating resistors whose end are expediently provided with a metal layer. This can be used up, for example, by steaming or sputtering. Preferably, a metal paste is used, which typically contains silver and possibly another precious metal, such as. As platinum or palladium.
  • the support plates holding the heating resistor are each formed from a non-electrically conductive ceramic material.
  • the support plates have similar to the electrical conductivity similar specific characteristics as the ceramic heating element.
  • the support plates preferably have recesses adapted to the cross-sectional shape of the heating resistor for receiving the ends of the heating resistor, as well as openings through which the flow of the gaseous medium can pass.
  • the resistance heating element according to the invention comprises a plurality of ceramic heating rods, which are arranged concentrically around the center of the heating element.
  • Each U-shaped heating resistor is positively held with its front and rear end portions in the recesses of the support plates, wherein the support plates are fixed by a common central axially extending pin together.
  • the heating resistors are electrically connected to each other and to the power supply lines.
  • the flow of the medium can pass through the flow channel, which extends between the two support plates and in which the at least one heating resistor is arranged, through the openings of the two support plates.
  • the heating resistor is connected in a material-locking manner to the carrier plates.
  • the heating resistors In order to hold the elongated heating resistors with the carrier plates in position, they can be firmly connected before, by or after sintering.
  • the heating elements thus produced are self-supporting and need not be guided or supported by an additional element.
  • the support plates, which hold the ceramic heating resistors on both sides, must withstand temperatures well above 1000 ° C, for example on the air outlet side of the resistance heating element.
  • the U-shaped ceramic heating resistor may have a planar or a structured surface.
  • An embodiment of the invention is preferred in which the heating resistor has depressions and / or elevations in order to increase the surface area for contact with the flow of the gaseous medium in relation to a planar surface. Due to the more complex geometry, in addition to the largest possible surface for the heat exchange with the flowing medium, it is also achieved that the medium flowing past the heating resistor in the flow channel is swirled. This causes the entire media flow is uniformly and homogeneously heated.
  • the conductive ceramic material of the heating resistor is a mixed ceramic having a conductive and a non-conductive component, the conductive ceramic component having a positive temperature coefficient of between 0 and 10000 ppm / K.
  • a conductive ceramic component is preferably molybdenum disilicide (MoSi 2 ) and as a non-conductive ceramic component preferably alumina (Al 2 O 3 ) is provided.
  • the preferably positive temperature coefficient should not rise too steep, otherwise hot spots may form. Also within the service temperature up to about 1500 ° C no steep slope of the resistivity should occur, as with some electrically conductive ceramics with positive Temperature coefficient is the case.
  • the mixed ceramic may also have other additives for improving sinterability or stability. It is also possible, the alumina by other insulating ceramics such. As oxide or nitride or silicate ceramics partially substitute.
  • the proportion of the conductive component the specific resistance of the material can be adjusted within a certain range. A proportion of 20 to 30% molybdenum disilicide in the mixed ceramic has proven to be ideal. Thus, specific resistances between 0.01 and 1.0 ⁇ ⁇ cm can be achieved at room temperature, which increase up to 1000 ° C by a factor of three or more.
  • the heating device according to the invention for example for a hot air device, with a arranged in a stream of gaseous medium resistance heating element, which is encompassed by a heating tube, has an inventive electrical resistance heating element with the features of claim 1.
  • a heating tube for example, air or gas is blown in as a medium, and at the other end of the heating tube, the heated air or gas stream exits.
  • the air or gas stream generated by a fan provided on the heater or the heater can be supplied from an external reservoir under pressure.
  • FIG. 1 shows an embodiment of the resistance heating element 1 according to the invention with four heating resistors 2 in an Achsmaledarwolf, of which only two are visible in the drawing.
  • the heating resistors 2 are formed substantially rod-shaped and have front and rear end portions 3, 4.
  • the rear end sections 4 are associated with an air inlet side 5 and the front end sections of an air outlet side 6 of the resistance heating element 1.
  • the heating resistors 2 are U-shaped with a flat surface 7 and have ends 8, 8 ', legs 9, 9' and a leg 9, 9 'connecting base 10.
  • the ends 8 'of the heating resistors 2 are electrically connected by means of an electrical bridge 11. To the ends 8 of the heating resistors 2 lead electrical leads 12th
  • the heating resistors 2 are held by a front and rear support plate 13, 14.
  • the base 10 is in positive engagement with the air outlet side front support plate 13, the two opposite ends 8, 8 'with the air inlet side rear support plate 14.
  • the support plates 13, 14 are fixed to each other with a central, preferably four-edged pin 15.
  • the heating resistors 2 extend into an air duct 16 which is delimited on the front side by the carrier plates 13, 14 and peripherally by a heating tube, not shown in the drawing, as soon as the heating element 1 is installed in a hot air device.
  • FIGS. 1, 2 seen, an elongated substantially cylindrical shape.
  • FIG. 2 shows the designed as a round flat disc support plates 13, 14, which are made of an electrically non-conductive ceramic material, in plan view. Shown is the heating resistors 2 associated inside.
  • the support plates 13, 14 have recesses 17 with holes 18 for receiving the front and rear end portions 3, 4 of the heating resistors 2.
  • a central attachment hole 20 for the carrier plates 13, 14 connecting pin 15 is formed.
  • the holes 18 of the recesses 17 allow the electrical connection of the heating resistors. 2
  • FIG. 3 shows a first embodiment of the U-shaped heating resistor 2 made of an electrically conductive ceramic material.
  • the legs 9, 9 'and the base 10 have a square cross-sectional shape and lie in one plane.
  • the surface 7 is flat.
  • FIG. 4 is a second variant of the in the FIG. 3 shown heating resistor 2 shown in the legs 9, a rectangular and the legs 9 'and the base 10 have a triangular cross-sectional shape, so that together they form a cylinder segment corresponding to one-eighth of a right circular cylinder.
  • the surfaces 7 of the legs 9, 9 ' are flat and inclined to each other.
  • FIG. 5 shows a third embodiment of the U-shaped heating resistor 2.
  • the legs 9, 9 'and the base 10 have a substantially triangular cross-sectional shape. They are designed so that together they form a cylinder segment which corresponds to a quarter of a circular cylinder.
  • the surface 7 of the legs 9, 9 ' is structured. It has recesses 21 and ridges 22 to increase the surface 7 for contact with the air flow.
  • the structured surface 7 advantageously causes a turbulence of the air flow and thus a uniform heating.
  • FIG. 6 shows the to the in the FIG. 5
  • the carrier plates 13, 14 have a circumferential, substantially square recess 17 and are suitable for cohesive connection with the heating resistors 2.
  • the heating resistors 2 are arranged in the corners 23 of the recess 17.
  • the support plates 13, 14 have openings 19 for the air flow and the formed recess 17 holes 18 for the electrical connection of the heating resistors 2.
  • heating element 2 matching support plates 13, 14 are not shown in the drawing. They can be similar to those in the FIG. 6 be formed support plates 13, 14, wherein the shape of the recess 17 is adapted to the different cross-sectional shape of the cylinder segment of the heating resistor 2.
  • FIGS. 7, 8 show two embodiments of H contemplattuft listeningen invention 24, 25.
  • hot air device 24 is a flanged on a machine frame hot tufting device without integrated fan. The air flow is supplied to the hot air device 24 from the outside.
  • the in the FIG. 8 shown hot air device 25 is equipped with an internal fan and can be used as a hand-held hot air device. Otherwise, the two devices are formed substantially the same. They have a housing 26 with a front heating tube 27. In the heating tube 27 is the invention Resistance heating element 1 is not visible installed in the drawing. In this case, the air outlet side 6 of the resistance heating element 1 to the air outlet opening 28 of the heating tube 27 and the air inlet side 5 to the rear end of the housing 26. About the housing 26, the heating resistors 2 of the resistance heating element 1 are supplied with electrical voltage.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Claims (10)

  1. Elément chauffant à résistance électrique (1) destiné à chauffer un milieu gazeux, comportant au moins une résistance chauffante (2) s'étendant essentiellement dans la direction longitudinale de l'élément chauffant à résistance électrique (1), au niveau de laquelle le milieu s'écoule et est réchauffé à cette occasion, et comportant au moins un canal d'écoulement (16) s'étendant le long de la résistance chauffante (2), à travers lequel le milieu peut passer d'un côté entrée de canal (5) à un côté sortie de canal (6) de l'élément chauffant à résistance (1), la résistance chauffante (2) présentant un matériau céramique électriquement conducteur pour la conduction de courant, caractérisé en ce que la résistance chauffante (2) est réalisée en forme de barre et tenue par des plaques de support (13, 14) disposées du côté entrée de canal (5) et du côté sortie de canal (6) de l'élément chauffant à résistance (1), dans lesquelles le canal d'écoulement (16) se poursuit, et que la résistance chauffante (2) est en prise par complémentarité de formes avec les plaques de support (13, 14) à ses extrémités (8, 8', 10).
  2. Elément chauffant à résistance (1) selon la revendication 1, caractérisé en ce que le matériau céramique conducteur présente une résistivité comprise entre 0,01 et 1,0 Ω·cm.
  3. Elément chauffant à résistance (1) selon la revendication 1 ou 2, caractérisé en ce que le rapport entre la longueur et la surface de section du matériau céramique de la résistance chauffante est compris entre 1 et 500 cm-1.
  4. Elément chauffant à résistance (1) selon une des revendications précédentes, caractérisé en ce que la résistance chauffante (2) est essentiellement réalisée en forme de U.
  5. Elément chauffant à résistance (1) selon une des revendications précédentes, caractérisé en ce que les plaques de support (13, 14) sont formées d'un matériau céramique électriquement non conducteur.
  6. Elément chauffant à résistance (1) selon une des revendications précédentes, caractérisé en ce que les plaques de support (13, 14) présentent des évidements (17) adaptées à la forme de section de la résistance chauffante (2) pour recevoir les extrémités (8, 8', 10) de la résistance chauffante (2), ainsi que des ouvertures (19) à travers lesquelles le courant du milieu gazeux peut passer.
  7. Elément chauffant à résistance (1) selon une des revendications précédentes, caractérisé en ce que la résistance chauffante (2) est reliée aux plaques de support (13, 14) par liaison de matière.
  8. Elément chauffant à résistance (1) selon une des revendications précédentes, caractérisé en ce que la résistance chauffante (2) présente des creux (21) et/ou des élévations (22) pour augmenter la surface (7) pour le contact avec le courant du milieu gazeux par rapport à une surface plane.
  9. Elément chauffant à résistance (1) selon une des revendications précédentes, caractérisé en ce que le matériau céramique conducteur est une céramique mixte avec une composante conductrice et une composante non conductrice, la composante de céramique conductrice présentant un coefficient de température positif, et la composante de céramique conductrice étant de préférence du disiliciure de molybdène (MoSi2) et la composante de céramique non conductrice de préférence de l'oxyde d'aluminium (AL2O3).
  10. Dispositif de chauffage (24, 25) destiné à chauffer un milieu gazeux en écoulement, comportant un élément chauffant électrique (1) disposé dans un courant du milieu gazeux, lequel est enveloppé par un tube chauffant (27), le courant étant produit par un ventilateur prévu sur le dispositif de chauffage (25) ou pouvant provenir d'un réservoir externe sous surpression, caractérisé par un élément chauffant à résistance (1) selon une des revendications précédentes 1 à 9.
EP08010426A 2008-06-09 2008-06-09 Elément de chauffe de résistance électrique pour un dispositif de chauffage destiné à chauffer un milieu gazeux s'écoulant Active EP2134143B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP08010426A EP2134143B1 (fr) 2008-06-09 2008-06-09 Elément de chauffe de résistance électrique pour un dispositif de chauffage destiné à chauffer un milieu gazeux s'écoulant
DE502008002030T DE502008002030D1 (de) 2008-06-09 2008-06-09 Elektrisches Widerstandsheizelement für eine Heizeinrichtung zum Erhitzen eines strömenden gasförmigen Mediums
AT08010426T ATE492140T1 (de) 2008-06-09 2008-06-09 Elektrisches widerstandsheizelement für eine heizeinrichtung zum erhitzen eines strömenden gasförmigen mediums
JP2009125138A JP4977844B2 (ja) 2008-06-09 2009-05-25 流れる気体の加熱装置の抵抗加熱素子
US12/478,825 US20090304372A1 (en) 2008-06-09 2009-06-05 Electrical resistance heating element for a heating device for heating a flowing gaseous medium
CN2009102034001A CN101603733B (zh) 2008-06-09 2009-06-09 用于加热流动气体介质的加热装置的电阻加热元件

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08010426A EP2134143B1 (fr) 2008-06-09 2008-06-09 Elément de chauffe de résistance électrique pour un dispositif de chauffage destiné à chauffer un milieu gazeux s'écoulant

Publications (2)

Publication Number Publication Date
EP2134143A1 EP2134143A1 (fr) 2009-12-16
EP2134143B1 true EP2134143B1 (fr) 2010-12-15

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EP08010426A Active EP2134143B1 (fr) 2008-06-09 2008-06-09 Elément de chauffe de résistance électrique pour un dispositif de chauffage destiné à chauffer un milieu gazeux s'écoulant

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Country Link
US (1) US20090304372A1 (fr)
EP (1) EP2134143B1 (fr)
JP (1) JP4977844B2 (fr)
CN (1) CN101603733B (fr)
AT (1) ATE492140T1 (fr)
DE (1) DE502008002030D1 (fr)

Families Citing this family (29)

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Publication number Priority date Publication date Assignee Title
DE102010030100A1 (de) * 2010-06-15 2011-12-15 BSH Bosch und Siemens Hausgeräte GmbH Verfahren und Vorrichtung zur Herstellung einer Heizwendel, sowie Heizwendel
CN107259647B (zh) 2011-09-06 2020-03-20 英美烟草(投资)有限公司 加热可点燃抽吸材料
WO2013034454A1 (fr) 2011-09-06 2013-03-14 British American Tobacco (Investments) Limited Chauffage d'un matériau fumable
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JP4977844B2 (ja) 2012-07-18
ATE492140T1 (de) 2011-01-15
US20090304372A1 (en) 2009-12-10
CN101603733A (zh) 2009-12-16
CN101603733B (zh) 2012-08-29
DE502008002030D1 (de) 2011-01-27
JP2009293916A (ja) 2009-12-17
EP2134143A1 (fr) 2009-12-16

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