EP3283827A1 - Thermal inertia heating element - Google Patents

Thermal inertia heating element

Info

Publication number
EP3283827A1
EP3283827A1 EP16719304.4A EP16719304A EP3283827A1 EP 3283827 A1 EP3283827 A1 EP 3283827A1 EP 16719304 A EP16719304 A EP 16719304A EP 3283827 A1 EP3283827 A1 EP 3283827A1
Authority
EP
European Patent Office
Prior art keywords
heating element
inertia
shell
inertial
compartments
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.)
Withdrawn
Application number
EP16719304.4A
Other languages
German (de)
French (fr)
Inventor
Cédric HEMMER
Alexandre Leblanc
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.)
Muller et Cie SA
Original Assignee
Muller et Cie SA
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 Muller et Cie SA filed Critical Muller et Cie SA
Publication of EP3283827A1 publication Critical patent/EP3283827A1/en
Withdrawn legal-status Critical Current

Links

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
    • F24H3/002—Air heaters using electric energy supply
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/08—Materials not undergoing a change of physical state when used
    • C09K5/10—Liquid materials
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/08—Materials not undergoing a change of physical state when used
    • C09K5/14—Solid materials, e.g. powdery or granular
    • 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
    • F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
    • F24H7/0208—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply
    • F24H7/0216—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply the transfer fluid being air
    • 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
    • F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • F24H7/06—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being radiated
    • F24H7/062—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being radiated with electrical energy supply
    • 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
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/16—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being integral with the element, e.g. formed by extrusion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D2020/0004—Particular heat storage apparatus
    • F28D2020/0013—Particular heat storage apparatus the heat storage material being enclosed in elements attached to or integral with heat exchange conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/16—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being integral with the element, e.g. formed by extrusion
    • F28F1/18—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being integral with the element, e.g. formed by extrusion the element being built-up from finned sections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • the present invention relates to a heating element with thermal inertia, more particularly to a heating element with inertia intended to equip a heating apparatus.
  • inertial heaters such as ceramics or cast irons have good radiative characteristics with high emissivities.
  • a disadvantage of these heating elements is the fact that these elements have the same radiative characteristics on the front and rear faces which generates thermal losses on the back of the heater in which they are fixed, said back being generally fixed to a wall.
  • these heating elements comprise a heat source, generally consisting of an electrical resistance directly in contact with the inertial material constituting these inertia heating elements. This arrangement of the inertia material to encompass the electrical resistance prevents direct heat transfer between the heat source and the user of the heater.
  • An object of the present invention is to provide heating elements free from the aforementioned drawbacks. According to the invention, this object is achieved by means of an inertial heating element intended to equip a heating apparatus comprising:
  • a shell capable of being heated by the heat source and defining at least one compartment intended to receive an inertia material, this shell being configured, on the one hand, to transmit heat directly to its external environment and, on the other hand, to on the other hand, to conduct heat to the inertia material.
  • the heat source is constituted by a heating electric resistance.
  • the shell defines two compartments disposed on either side of the electric heating resistor.
  • each compartment is partitioned so as to form a plurality of thermal channels in said compartments.
  • the inertia material contained in the compartment is a solid such as ceramic, cast iron, or a liquid such as a coolant, or a combination of a solid inertia material and a liquid inertia material or a phase change material.
  • the inertia material contained in the compartment or compartments is pure silica rock, calcined and ground to a variable size.
  • the shell is made of a material having good thermal conduction characteristics and low emissivity.
  • the shell is made of a material having an emissivity of between 0 and 0.5.
  • the shell is constituted by an aluminum profile.
  • the compartments are open at at least one of their ends to allow filling of the inertia material and cooperate with a closure device.
  • the inertial heating element is closed at each of its ends by a closure device and is configured to be fixed inside a heating device by means of fastening means which are provided with said devices. closure.
  • the closure device is made of a material whose coefficient of expansion is less than that of the material in which the shell is made.
  • the invention also relates to a heating apparatus comprising at least one inertial heating element comprising at least one of the above-mentioned characteristics.
  • a heating apparatus comprising at least one inertial heating element comprising at least one of the above-mentioned characteristics.
  • FIG. 1 is a perspective view of an embodiment of the inertial heating element according to the invention.
  • FIG. 2 is a cross-sectional view of the inertia heating element of FIG.
  • the inertia heating element 1 comprises:
  • a heat source 2 for example constituted by an electrical resistance
  • a shell 3 capable of being heated by the heat source and defining at least one compartment 4 intended to receive an inertia material 5.
  • the shell 3 is configured, on the one hand, to transmit heat to its external environment and, on the other hand, to conduct the heat in the inertia material and heat the latter.
  • the heating element according to the invention has a single compartment 4, the latter is configured so as to be centered on the heat source 2, so that the heat source uniformly heats said compartment and the inertia material. 5 that it contains.
  • the shell 3 defines two compartments 4 disposed on either side of the electrical resistance 2. These compartments have a section of petaloid shape whose width decreases away from the heating resistor 2. From the so, this particular form makes the surface temperature of the heat source 2 more homogeneous in the heating phases because the amount of inertia material is greater at the location where the heat storage potential is greater, that is, near said heat source. This potential decreases by moving away from said heat source so that, conversely, the quantity of inertia material is smaller at the location where the heat storage potential is the least important, that is to say away from said heat source.
  • each compartment 4 is partitioned so as to form a plurality of chambers inside each compartment 4.
  • Such partitions define thermal channels in the compartments 4 to increase the thermal conductivity in the inertial material.
  • the shell 3 is made of a material having good thermal conduction characteristics and low emissivity.
  • said shell 3 is made of a material having an emissivity of between 0 and 0.5.
  • said shell is constituted by an aluminum profile.
  • At least a portion of said shell 3 has a rough surface defining ripples or fins, thus improving the heat transfer between the heating element and its environment.
  • the inertia material is a liquid such as a coolant (for example a vegetable or mineral oil).
  • the compartments 4 receive a combination of a solid inertia material and a liquid inertia material or a phase change material.
  • the inertial material is pure silica rock, calcined and milled to a variable size.
  • the variable particle size makes it possible to optimize the filling of the compartments 4.
  • the heating element thus produced is such that the heat source 2 is not in direct contact with the inertia material 5.
  • the heat source 2 initially heats the shell 3, then the heat is stored in the inertial material, which provides a better reactivity of the heating element according to the invention.
  • the compartments 4 are open at at least one of their ends to allow filling of the inertia material and cooperate with a closure device 6, also called plug in the present disclosure.
  • a closure device 6 also called plug in the present disclosure.
  • plugs 6 are made of a material whose coefficient of expansion is less than that of the material in which the shell 3 is made, so as to improve the closure of the compartments 4 by the expansion reaction of the materials constituting the inertia heating element. 1 when it rises in temperature.
  • the plugs 6 intended to close the compartments 4 at at least one of their ends are made of steel.
  • the shell is preferably made of aluminum, it has a coefficient of expansion greater than that of plugs made of steel.
  • the aluminum constituting the shell heats and expands more significantly than the steel constituting the plugs which has the effect of improving the closure of the compartments 4.
  • the plugs 6 are fixed, permanently or removably to the shell 3, for example by crimping or screwing.
  • the closure device comprises fastening means (not shown) for fixing the inertial heating element according to the invention inside a heater.
  • the emissivity of the heating element according to the invention is adjustable and adjustable thanks to various surface treatments such as painting, sanding, chemical stall, etc.
  • the present invention also relates to a heating apparatus comprising at least one inertia heating element having at least one of the aforementioned characteristics.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Geometry (AREA)
  • Resistance Heating (AREA)
  • Cookers (AREA)

Abstract

The invention relates to an inertia heating element (1) designed to be fitted to a heating appliance, characterised in that it comprises: a preferably electrical heat source (2); and a shell (3) that can be heated by the heat source (2) and defines at least one compartment (4) for receiving an inertia material (5), said shell (3) being designed to both transmit heat outside same and conduct the heat to the inertia material (5).

Description

ÉLÉMENT CHAUFFANT A INERTIE THERMIQUE.  HEATING ELEMENT WITH THERMAL INERTIA.
La présente invention concerne un élément chauffant à inertie thermique, plus particulièrement un élément chauffant à inertie destiné à équiper un appareil de chauffage. The present invention relates to a heating element with thermal inertia, more particularly to a heating element with inertia intended to equip a heating apparatus.
Les éléments chauffants à inertie utilisés actuellement tels que des céramiques ou des fontes ont des caractéristiques radiatives bonnes avec des émissivités élevées. Un inconvénient de ces éléments chauffants est le fait que ces éléments ont les mêmes caractéristiques radiatives sur les faces avant et arrière ce qui génère des pertes thermiques au dos de l'appareil de chauffage dans lequel elles sont fixées, ledit dos étant généralement fixé à une paroi. De plus, ces éléments chauffants comportent une source de chaleur, généralement constituée par une résistance électrique directement en contact avec le matériau inertiel constituant ces éléments chauffants à inertie. Cette disposition du matériau à inertie de sorte à englober la résistance électrique empêche un transfert direct de chaleur entre la source de chaleur et l'utilisateur de l'appareil de chauffage. Currently used inertial heaters such as ceramics or cast irons have good radiative characteristics with high emissivities. A disadvantage of these heating elements is the fact that these elements have the same radiative characteristics on the front and rear faces which generates thermal losses on the back of the heater in which they are fixed, said back being generally fixed to a wall. In addition, these heating elements comprise a heat source, generally consisting of an electrical resistance directly in contact with the inertial material constituting these inertia heating elements. This arrangement of the inertia material to encompass the electrical resistance prevents direct heat transfer between the heat source and the user of the heater.
Un but de la présente invention est de proposer des éléments chauffants exempts des inconvénients susmentionnés. Selon l'invention, ce but est atteint grâce à un élément chauffant à inertie destiné à équiper un appareil de chauffage comprenant : An object of the present invention is to provide heating elements free from the aforementioned drawbacks. According to the invention, this object is achieved by means of an inertial heating element intended to equip a heating apparatus comprising:
- une source de chaleur ; - a source of heat;
- une coque apte à être chauffée par la source de chaleur et définissant au moins un compartiment destiné à recevoir un matériau à inertie, cette coque étant configurée, d'une part, pour transmettre directement la chaleur à son environnement extérieur et, d'autre part, pour conduire la chaleur vers le matériau à inertie. a shell capable of being heated by the heat source and defining at least one compartment intended to receive an inertia material, this shell being configured, on the one hand, to transmit heat directly to its external environment and, on the other hand, to on the other hand, to conduct heat to the inertia material.
Un tel élément chauffant possède une meilleure réactivité et une plus grande capacité inertielle que les éléments chauffants existants, permettant ainsi de limiter les variations brutales de température. L'invention est avantageusement mise en œuvre selon les modes de réalisation et les variantes exposés ci-après, lesquels sont à considérer individuellement ou selon toute combinaison techniquement opérante. Selon un mode de réalisation, la source de chaleur est constituée par une résistance électrique chauffante. Such a heating element has a better reactivity and a greater inertial capacity than the existing heating elements, thus making it possible to limit the sudden changes in temperature. The invention is advantageously implemented according to the embodiments and variants described below, which are to be considered individually or in any technically operative combination. According to one embodiment, the heat source is constituted by a heating electric resistance.
Selon un mode de réalisation, la coque définit deux compartiments disposés de part et d'autre de la résistance électrique chauffante. Selon un mode de réalisation avantageux, chaque compartiment est cloisonné de sorte à former une pluralité de canaux thermiques dans lesdits compartiments. According to one embodiment, the shell defines two compartments disposed on either side of the electric heating resistor. According to an advantageous embodiment, each compartment is partitioned so as to form a plurality of thermal channels in said compartments.
Selon un mode de réalisation avantageux, le matériau à inertie contenu dans le compartiment est un solide tel que de la céramique, de la fonte, ou un liquide tel qu'un fluide caloporteur, ou une combinaison d'un matériau à inertie solide et d'un matériau à inertie liquide ou un matériau à changement de phase. According to an advantageous embodiment, the inertia material contained in the compartment is a solid such as ceramic, cast iron, or a liquid such as a coolant, or a combination of a solid inertia material and a liquid inertia material or a phase change material.
Avantageusement, le matériau à inertie contenu dans le ou les compartiments est de la roche de silice pure, calcinée et broyée à granulométrie variable. Advantageously, the inertia material contained in the compartment or compartments is pure silica rock, calcined and ground to a variable size.
Avantageusement, la coque est réalisée en un matériau présentant de bonnes caractéristiques de conduction thermique et de faible émissivité. Avantageusement, la coque est réalisée dans un matériau ayant une émissivité comprise entre 0 et 0,5. Advantageously, the shell is made of a material having good thermal conduction characteristics and low emissivity. Advantageously, the shell is made of a material having an emissivity of between 0 and 0.5.
Selon un mode de réalisation, la coque est constituée par un profilé en aluminium. According to one embodiment, the shell is constituted by an aluminum profile.
Selon un mode de réalisation, les compartiments sont ouverts à au moins l'une de leurs extrémités pour permettre le remplissage du matériau à inertie et coopèrent avec un dispositif de fermeture. According to one embodiment, the compartments are open at at least one of their ends to allow filling of the inertia material and cooperate with a closure device.
Avantageusement, l'élément chauffant à inertie est fermé à chacune de ses extrémités par un dispositif de fermeture et est configuré pour pouvoir être fixé à l'intérieur d'un appareil de chauffage par l'intermédiaire de moyens de fixation dont sont munis lesdits dispositifs de fermeture. Avantageusement, le dispositif de fermeture est réalisé dans un matériau dont le coefficient de dilatation est inférieur à celui du matériau dans lequel est réalisée la coque. Advantageously, the inertial heating element is closed at each of its ends by a closure device and is configured to be fixed inside a heating device by means of fastening means which are provided with said devices. closure. Advantageously, the closure device is made of a material whose coefficient of expansion is less than that of the material in which the shell is made.
L'invention concerne également un appareil de chauffage comprenant au moins un élément chauffant à inertie comportant au moins l'une des caractéristiques susmentionnées. L'invention est exposée ci-après selon ses modes de réalisation préférés, nullement limitatifs, et en référence aux figures 1 et 2, dans lesquelles : : The invention also relates to a heating apparatus comprising at least one inertial heating element comprising at least one of the above-mentioned characteristics. The invention is explained below according to its preferred embodiments, in no way limiting, and with reference to FIGS. 1 and 2, in which:
La figure 1 est une vue en perspective d'un exemple de réalisation de l'élément chauffant à inertie selon l'invention. La figure 2 est une vue en coupe transversale de l'élément chauffant à inertie de la figure 1 . Figure 1 is a perspective view of an embodiment of the inertial heating element according to the invention. FIG. 2 is a cross-sectional view of the inertia heating element of FIG.
L'élément chauffant à inertie 1 selon l'invention comprend : The inertia heating element 1 according to the invention comprises:
- une source de chaleur 2 par exemple constituée par une résistance électrique ; a heat source 2, for example constituted by an electrical resistance;
- une coque 3 apte à être chauffée par la source de chaleur et définissant au moins un compartiment 4 destiné à recevoir un matériau à inertie 5. a shell 3 capable of being heated by the heat source and defining at least one compartment 4 intended to receive an inertia material 5.
La coque 3 est configurée, d'une part, pour transmettre de la chaleur à son environnement extérieur et, d'autre part, pour conduire la chaleur dans le matériau à inertie et chauffer ce dernier. The shell 3 is configured, on the one hand, to transmit heat to its external environment and, on the other hand, to conduct the heat in the inertia material and heat the latter.
De manière avantageuse, lorsque l'élément chauffant selon l'invention possède un seul compartiment 4, ce dernier est configuré de sorte à être centré sur la source de chaleur 2, de sorte que ce dernier chauffe uniformément ledit compartiment ainsi que le matériau à inertie 5 qu'il renferme. Advantageously, when the heating element according to the invention has a single compartment 4, the latter is configured so as to be centered on the heat source 2, so that the heat source uniformly heats said compartment and the inertia material. 5 that it contains.
Selon l'exemple illustré, la coque 3 définit deux compartiments 4 disposés de part et d'autre de la résistance électrique 2. Ces compartiments présentent une section de forme pétaloïde dont la largeur décroît en s'éloignant de la résistance chauffante 2. De la sorte, cette forme particulière rend la température de surface de la source de chaleur 2 plus homogène dans les phases de chauffage car la quantité de matière à inertie est plus importante à l'endroit où le potentiel de stockage de chaleur est plus important, c'est-à-dire à proximité de ladite source de chaleur. Ce potentiel décroît en s'éloignant de ladite source de chaleur de sorte que, inversement, la quantité de matière à inertie est moins importante à l'endroit où le potentiel de stockage de chaleur est le moins important, c'est-à-dire à distance de ladite source de chaleur. According to the illustrated example, the shell 3 defines two compartments 4 disposed on either side of the electrical resistance 2. These compartments have a section of petaloid shape whose width decreases away from the heating resistor 2. From the so, this particular form makes the surface temperature of the heat source 2 more homogeneous in the heating phases because the amount of inertia material is greater at the location where the heat storage potential is greater, that is, near said heat source. This potential decreases by moving away from said heat source so that, conversely, the quantity of inertia material is smaller at the location where the heat storage potential is the least important, that is to say away from said heat source.
Selon un exemple de réalisation non illustré, chaque compartiment 4 est cloisonné de sorte à former une pluralité de chambres à l'intérieur de chaque compartiment 4. De telles cloisons définissent des canaux thermiques dans les compartiments 4 permettant d'augmenter la conductivité thermique dans le matériau inertiel. De manière avantageuse, la coque 3 est réalisée en un matériau présentant de bonnes caractéristiques de conduction thermique et une faible émissivité. Selon un mode de réalisation avantageux, ladite coque 3 est réalisée dans un matériau présentant une émissivité comprise entre 0 et 0,5. Préférentiellement, ladite coque est constituée par un profilé en aluminium. According to an embodiment not shown, each compartment 4 is partitioned so as to form a plurality of chambers inside each compartment 4. Such partitions define thermal channels in the compartments 4 to increase the thermal conductivity in the inertial material. Advantageously, the shell 3 is made of a material having good thermal conduction characteristics and low emissivity. According to an advantageous embodiment, said shell 3 is made of a material having an emissivity of between 0 and 0.5. Preferably, said shell is constituted by an aluminum profile.
De plus, pour augmenter la surface d'échange thermique de l'élément chauffant selon l'invention, au moins une portion de ladite coque 3 présente une surface rugueuse définissant des vaguelettes ou ailettes, améliorant ainsi le transfert thermique entre l'élément chauffant et son environnement. Dans un mode de réalisation, le matériau à inertie 5 contenu dans les compartimentsIn addition, to increase the heat exchange surface of the heating element according to the invention, at least a portion of said shell 3 has a rough surface defining ripples or fins, thus improving the heat transfer between the heating element and its environment. In one embodiment, the inertia material contained in the compartments
4 est un solide tel que de la céramique ou de la fonte. Dans un autre mode de réalisation, le matériau à inertie est un liquide tel qu'un fluide caloporteur (par exemple une huile végétale ou minérale). Dans encore un autre mode de réalisation, les compartiments 4 reçoivent une combinaison d'un matériau à inertie solide et d'un matériau à inertie liquide ou d'un matériau à changement de phase. Dans un mode de réalisation préféré, le matériau inertiel 5 est de la roche de silice pure, calcinée et broyée à granulométrie variable. 4 is a solid such as ceramic or cast iron. In another embodiment, the inertia material is a liquid such as a coolant (for example a vegetable or mineral oil). In yet another embodiment, the compartments 4 receive a combination of a solid inertia material and a liquid inertia material or a phase change material. In a preferred embodiment, the inertial material is pure silica rock, calcined and milled to a variable size.
En effet, la roche de silice pure est un matériau présentant de bonnes qualités inertielles. De plus, la granulométrie variable permet d'optimiser le remplissage des compartiments 4. L'élément chauffant ainsi réalisé est tel que la source de chaleur 2 n'est pas en contact direct avec le matériau à inertie 5. Ainsi, la source de chaleur 2 chauffe dans un premier temps la coque 3, puis la chaleur est stockée dans le matériau inertiel, ce qui procure une meilleure réactivité de l'élément chauffant selon l'invention. Indeed, pure silica rock is a material with good inertial qualities. In addition, the variable particle size makes it possible to optimize the filling of the compartments 4. The heating element thus produced is such that the heat source 2 is not in direct contact with the inertia material 5. Thus, the heat source 2 initially heats the shell 3, then the heat is stored in the inertial material, which provides a better reactivity of the heating element according to the invention.
Avantageusement, les compartiments 4 sont ouverts à au moins l'une de leurs extrémités pour permettre le remplissage du matériau à inertie et coopèrent avec un dispositif de fermeture 6, encore appelé bouchon dans le présent exposé. Ces bouchons 6 sont réalisés dans un matériau dont le coefficient de dilatation est inférieur à celui du matériau dans lequel est réalisée la coque 3, de sorte à améliorer la fermeture des compartiments 4 par la réaction de dilatation des matériaux constituant l'élément chauffant à inertie 1 lors de sa montée en température. Advantageously, the compartments 4 are open at at least one of their ends to allow filling of the inertia material and cooperate with a closure device 6, also called plug in the present disclosure. These plugs 6 are made of a material whose coefficient of expansion is less than that of the material in which the shell 3 is made, so as to improve the closure of the compartments 4 by the expansion reaction of the materials constituting the inertia heating element. 1 when it rises in temperature.
De préférence, les bouchons 6 destinés à fermer les compartiments 4 à au moins l'une de leurs extrémités sont réalisés en acier. En effet, la coque étant préférentiellement réalisée en aluminium, elle présente un coefficient de dilatation supérieur à celui des bouchons exécutés en acier. Ainsi, lorsque l'élément chauffant à inertie 1 chauffe, l'aluminium constituant la coque chauffe et se dilate de manière plus importante que l'acier constituant les bouchons ce qui a pour effet d'améliorer la fermeture des compartiments 4. Preferably, the plugs 6 intended to close the compartments 4 at at least one of their ends are made of steel. Indeed, the shell is preferably made of aluminum, it has a coefficient of expansion greater than that of plugs made of steel. Thus, when the inertia heating element 1 heats up, the aluminum constituting the shell heats and expands more significantly than the steel constituting the plugs which has the effect of improving the closure of the compartments 4.
Cette configuration permet d'assurer une bonne étanchéité des compartiments 4. Toutefois, pour améliorer cette étanchéité, les compartiments sont munis de joints d'étanchéité. This configuration ensures a good seal compartments 4. However, to improve this seal, the compartments are provided with seals.
Dans un mode de réalisation, les bouchons 6 sont fixés, à demeure ou de manière amovible à la coque 3, par exemple par sertissage ou par vissage. In one embodiment, the plugs 6 are fixed, permanently or removably to the shell 3, for example by crimping or screwing.
De manière avantageuse, le dispositif de fermeture comporte des moyens de fixation (non représentés) permettant la fixation de l'élément chauffant à inertie selon l'invention à l'intérieur d'un appareil de chauffage. Advantageously, the closure device comprises fastening means (not shown) for fixing the inertial heating element according to the invention inside a heater.
L'émissivité de l'élément chauffant selon l'invention est réglable et orientable grâce à différents traitements de surface tels que peinture, sablage, décrochage chimique, etc. The emissivity of the heating element according to the invention is adjustable and adjustable thanks to various surface treatments such as painting, sanding, chemical stall, etc.
La présente invention concerne également un appareil de chauffage comprenant au moins un élément chauffant à inertie comportant au moins l'une des caractéristiques susmentionnées. The present invention also relates to a heating apparatus comprising at least one inertia heating element having at least one of the aforementioned characteristics.

Claims

REVENDICATIONS
Élément chauffant à inertie (1 ) destiné à équiper un appareil de chauffage, caractérisé en ce qu'il comprend : Inertia heating element (1) for equipping a heating apparatus, characterized in that it comprises:
- une source de chaleur préférentiellement électrique (2) ;  a preferentially electric heat source (2);
- une coque (3) apte à être chauffée par la source de chaleur (2) et définissant au moins un compartiment (4) destiné à recevoir un matériau à inertie (5), ladite coque étant configurée, d'une part, pour transmettre de la chaleur à son environnement extérieur et, d'autre part, pour conduire la chaleur au matériau à inertie (5). a shell (3) able to be heated by the heat source (2) and defining at least one compartment (4) intended to receive an inertia material (5), said shell being configured, on the one hand, to transmit heat to its external environment and, on the other hand, to conduct heat to the inertia material (5).
Élément chauffant à inertie (1 ) selon la revendication 1 , dans lequel la coque (3) définit deux compartiments (4) disposés de part et d'autre de la source de chaleur (2). Inertial heating element (1) according to claim 1, wherein the shell (3) defines two compartments (4) disposed on either side of the heat source (2).
Élément chauffant à inertie (1 ) selon la revendication 1 ou la revendication 2, dans lequel la source de chaleur est une résistance électrique chauffante. An inertia heating element (1) according to claim 1 or claim 2, wherein the heat source is an electric heating resistor.
Élément chauffant à inertie (1 ) suivant l'une des revendications 1 à 3, dans lequel le matériau à inertie (5) contenu dans le ou les compartiments (4) est un solide tel que de la céramique, de la fonte, ou un liquide tel qu'un fluide caloporteur, ou une combinaison d'un matériau à inertie solide et d'un matériau à inertie liquide ou un matériau à changement de phase. Inertial heating element (1) according to one of claims 1 to 3, wherein the inertia material (5) contained in the compartment or compartments (4) is a solid such as ceramic, cast iron, or a liquid such as a heat transfer fluid, or a combination of a solid inertia material and a liquid inertia material or a phase change material.
Élément chauffant à inertie (1 ) selon la revendication 4, dans lequel le matériau à inertie (5) contenu dans le ou les compartiments (4) est de la roche de silice pure, calcinée et broyée à granulométrie variable. Inertial heating element (1) according to claim 4, wherein the inertia material (5) contained in the compartment or compartments (4) is pure silica rock, calcined and milled to variable grain size.
Élément chauffant à inertie (1 ) selon l'une quelconque des revendications 1 à 5, dans lequel la coque (3) est réalisée en un matériau présentant de bonnes caractéristiques de conduction thermique et une faible émissivité. Inertial heating element (1) according to any one of claims 1 to 5, wherein the shell (3) is made of a material having good thermal conduction characteristics and low emissivity.
Élément chauffant à inertie (1 ) selon la revendication 6, dans lequel la coque (3) est réalisée dans un matériau dont l'émissivité est comprise entre 0 et 0,5. An inertia heating element (1) according to claim 6, wherein the shell (3) is made of a material whose emissivity is between 0 and 0.5.
Élément chauffant à inertie (1 ) selon l'une des revendications 6 ou 7, dans lequel la coque (3) est constituée par un profilé en aluminium. Inertial heating element (1) according to one of claims 6 or 7, wherein the shell (3) is constituted by an aluminum profile.
Élément chauffant à inertie (1 ) suivant l'une quelconque des revendications 1 à 8, dans lequel les compartiments (4) sont ouverts à au moins l'une de leurs extrémités pour permettre le remplissage du matériau à inertie (5) et coopèrent avec un dispositif de fermeture (6). Inertial heating element (1) according to any one of claims 1 to 8, wherein the compartments (4) are open at at least one end to allow filling of the inertia material (5) and co-operate with a closing device (6).
Élément chauffant à inertie (1 ) selon la revendication 9,dans lequel le dispositif de fermeture (6) est réalisé dans un matériau dont le coefficient de dilatation est inférieur à celui du matériau dans lequel est réalisée la coque (3). Inertial heating element (1) according to claim 9, wherein the closure device (6) is made of a material whose coefficient of expansion is less than that of the material in which the shell (3) is made.
Élément chauffant à inertie (1 ) suivant l'une des revendications 9 ou 10, dans lequel le dispositif de fermeture (6) comporte des moyens de fixation. Inertial heating element (1) according to one of claims 9 or 10, wherein the closure device (6) comprises fixing means.
Élément chauffant à inertie (1 ) suivant l'une quelconque des revendications 9 à 1 1 , fermé à chacune de ses extrémités par un dispositif de fermeture (6) et qui est configuré pour pouvoir être fixé à l'intérieur d'un appareil de chauffage par l'intermédiaire des moyens de fixation dont sont munis lesdits dispositifs de fermeture. Inertial heating element (1) according to one of Claims 9 to 11, closed at each end by means of a closing device (6) and which is configured to be fixed inside a cooling device. heating by means of fastening means which are provided with said closure devices.
Appareil de chauffage, comprenant au moins un élément chauffant à inertie réalisé selon l'une quelconque des revendications 1 à 12. Heating apparatus, comprising at least one inertial heating element made according to any one of claims 1 to 12.
EP16719304.4A 2015-04-14 2016-04-14 Thermal inertia heating element Withdrawn EP3283827A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1553215A FR3035197B1 (en) 2015-04-14 2015-04-14 HEATING ELEMENT WITH THERMAL INERTIA.
PCT/EP2016/058300 WO2016166260A1 (en) 2015-04-14 2016-04-14 Thermal inertia heating element

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EP3283827A1 true EP3283827A1 (en) 2018-02-21

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EP (1) EP3283827A1 (en)
AU (1) AU2016249862A1 (en)
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WO (1) WO2016166260A1 (en)

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FR3075321B1 (en) * 2017-12-18 2020-06-12 Thermor THERMALLY INERTIAL AND REACTIVE HEATING BODY AND ELECTRIC HEATING APPARATUS COMPRISING SAME

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Publication number Priority date Publication date Assignee Title
FR2742524B1 (en) * 1995-12-13 1998-01-16 Electricite De France MIXED HEATING RADIATOR
FR2947614A1 (en) * 2009-07-02 2011-01-07 Alain Galmes Heat exchanger element for heating e.g. office, has parts formed from extruded aluminum profiles and forming convector radiator with battery, and heat accumulator filled with refractory materials to retain heat emitted by resistance plate
FR2949545B1 (en) * 2009-08-28 2014-09-26 Financ Yves Judel Soc ELECTRICAL RADIATOR WITH ACCUMULATION AND / OR INERTIA

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FR3035197B1 (en) 2018-07-27
AU2016249862A1 (en) 2017-12-07
FR3035197A1 (en) 2016-10-21

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