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EP0568464B1 - Heater, in particular towel dryer, with electric heating cord - Google Patents

Heater, in particular towel dryer, with electric heating cord Download PDF

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Publication number
EP0568464B1
EP0568464B1 EP93420069A EP93420069A EP0568464B1 EP 0568464 B1 EP0568464 B1 EP 0568464B1 EP 93420069 A EP93420069 A EP 93420069A EP 93420069 A EP93420069 A EP 93420069A EP 0568464 B1 EP0568464 B1 EP 0568464B1
Authority
EP
European Patent Office
Prior art keywords
appliance according
electric heating
heat
heater
cord
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93420069A
Other languages
German (de)
French (fr)
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EP0568464A1 (en
Inventor
Yvan Manquat
Gérard Gros
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.)
SEB SA
Original Assignee
SEB SA
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Publication date
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Publication of EP0568464A1 publication Critical patent/EP0568464A1/en
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Publication of EP0568464B1 publication Critical patent/EP0568464B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F24H3/002—Air heaters using electric energy supply
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/04—Towel racks; Towel rails; Towel rods; Towel rolls, e.g. rotatable
    • A47K10/06—Towel racks; Towel rails; Towel rods; Towel rolls, e.g. rotatable combined with means for drying towels

Definitions

  • the present invention relates to the technical field general of electric heaters used in as a heating medium and comprising one or more electric heating cords.
  • the present invention relates to a device for heating, in particular a towel dryer, comprising a body main heater intended to radiate the heat produced by an electric heating cord extending inside of said body and held in place inside this latest.
  • a heated towel radiator of metal plates linked together to form a radiant panel through sheet metal and bolted reinforcements and thus constitute an enclosure of heater intended to be fixed on a partition.
  • the radiator has a series of support arms on which items to be dried, and internally as a means heater, an electric heating cord. This last extends into the heating body forming a circuit in coil, the electric heating cord being maintained against metal plates by force jamming in ribs and tabs formed in the surface of the metal plates forming the enclosure.
  • Such a heating device is supposed to respect the operating standards required for radiators dry towel. These standards define, at least in part, the thermal stresses that need to be respected by such devices and they require before all to limit any danger of burns from the user, especially his fingers, in contact with the surface of the radiator. This implies in the design of the device to achieve a homogeneous distribution of heat over the entire radiant surface, without appearance zone or temperature points higher than the average temperature required.
  • the apparatus of the prior art mentioned above if it obviously meets the mandatory standards of maximum allowable temperature at any point in the surface of the heating body, however suffers from major drawback linked to the heterogeneity of temperatures obtained at the level of the heating body.
  • Such a temperature heterogeneity is due to the very design of the device which involves a series of metal plates between which conduction heat cannot be properly controlled, due to the presence of a large number of thermal bridges preferential such as the screwed connection plate joining all of the metal plates.
  • the heterogeneity of temperature is further aggravated by the thermal relationship direct existing between the electric heating cord and the inner faces of the metal plates.
  • a heating device comprising a heating body forming a surface external radiation of the heat produced by a electric heating cord.
  • the latter extends to inside the heating body and, is fixed by contact in heat exchange between two plates made from the "concrete" type.
  • the two plates are, moreover, overmolded around each other electrical cord.
  • the concrete slabs are reinforced with fiberglass.
  • the object of the invention therefore aims to remedy to the various drawbacks listed above, and to provide a heating device, in particular a towel dryer, in which the heat produced by means of heating is distributed evenly over the entire radiation surface using simple means, good market, and easy to assemble.
  • a complementary object of the invention aims to provide a heating device, in particular a towel warmer, in which the heat transmission between the cord electric heater and the radiation surface of the heat is improved, and in which the mode of attachment of the heating means proper with respect to the body of heating, is simplified.
  • a complementary object of the invention is to provide a heating device, in particular a towel warmer, in which the heat emission is controlled and constant in any point on the outside radiation surface and this regardless of the position occupied by the heating cord relatively to the lower and upper part of the body of heated.
  • Another object of the invention is to accelerate significantly the speed of towel drying hanging on the device.
  • a heating device in particular a towel dryer, comprising a heating body forming a surface of external radiation of the heat produced by a cord electric heater extending inside said body characterized in that the electric heating cord is fixed in heat exchange contact on at least one sheet of flexible material good heat conductor constituting a radiation and conduction surface internal extending opposite the radiation surface external.
  • the heating device according to the invention as as shown in Figure 1 includes a heater 1 having an upper part 1a and a part lower 1b, and intended to be fixed, by any means suitable, not shown in the figures, on a partition for example.
  • the heating body 1 is provided with preferably in its upper part 1a, of at least one and preferably two support bars 2 suitable for receiving items to dry, such as towels.
  • the heating body 1 is constituted, as it is shown in Figure 3, a front panel 3, and a panel rear 4 intended to face the wall or partition support.
  • the heater 1 thus forms by through panels 3 and 4 a surface of external radiation of the heat produced by a cord electric heater 5 extending inside the enclosure defined by panels 3 and 4.
  • each plate is provided corrugations 6 separated by grooves 6b extending along the main longitudinal axis x-x 'of each panel 3.4.
  • the heater 1 being designed to be fixed substantially vertically on a support partition, the corrugations 6 internally form the heater 1 a series of channels 7 extending along the axis x-x 'substantially vertically.
  • the heat exchange surface of the rear panel 4 is greater than the exchange surface of the front panel 3.
  • This difference in heat exchange properties can be obtained in a simple way by increasing the depth of the grooves 6b of the rear panel 4 relative to the depth of the grooves 6b of the front panel 3.
  • the pitch of the succession of grooves 6b and undulations 6 is chosen so that at least some grooves 6 of each panel 3,4 opposite coincide when placing the panels 3.4.
  • the electric heating cord 5 is of known type, and for example has double silicone insulation, and is fixed in heat exchange contact on at least one sheet of flexible material 10 good heat conductor extending in the heating body 1 opposite the or internal surfaces of panels 3 and 4.
  • the material flexible good heat conductor can consist of example of aluminum or copper sheets of a average thickness of the order of 2/10 mm. So advantageous, the electric heating cord 5 is inserted and fixed between two sheets 10,11 of aluminum adhering one against each other and wrapping the cord 5. The adhesion of the heating cord 5 on the sheet or sheets 10,11 as well as the adhesion of the two sheets to each other is obtained particularly advantageously by simple bonding using a temperature resistant glue. Good obviously, other means of adhesion are possible.
  • the sheets 10,11 have a geometric shape substantially equivalent to that of each panel 3,4, and extend over a surface also substantially equivalent or at least slightly lower than that of panels 3,4.
  • the electric heating cord 5 is arranged and mounted between the two sheets 10 and 11 of so as to form, from the upper part to the part low 1b of the heating body 1, a serpentine circuit extending substantially over the entire surface of the body of heats 1 from a cold upper strand 12 to a lower strand 13 cold.
  • the serpentine circuit has a series of strands superimposed straight lines 15 extending in one direction substantially perpendicular to the axis x-x 'and, by therefore, in a direction perpendicular to the canals 7.
  • the distance between the superimposed and adjacent straight strands 15 of the circuit in coil is variable depending on the position occupied by each strand relative to the lower part 1b or upper part 1a of the heating body 1.
  • the average distance d2 between two strands superimposed 15 of the lower part 1b of the body of heater is less than the distance d1 between two strands straight lines 15 extending in the upper part of the heating element 1.
  • the variation of distance can be continuous or discontinuous between upper and lower parts of the heating body 1.
  • the density of the cord in a simple manner electric heating in privileged areas of the body 1, and in particular in its lower part 1b to compensate for the thermal convection effect tending to maintain the upper zone of the heating body 1 at a higher average temperature.
  • Sheets of good heat conductive material 10.11 are provided with a series of perforations 18 provided at regular intervals in the axial direction x-x 'and in a direction perpendicular to said axis, between the strands and loops of the serpentine circuit.
  • the perforations 18 are used to fix all the panels 3 and 4 with the sheets 10,11 coating the electric cord 5.
  • the fixing is ensured by means of tightening 20 (FIG. 3), such as through studs, whose chamfered end is screwed into the thickness of the front panel 3 while the free end opening through a hole in the rear panel 4 receives a nut 21.
  • the clamping means 20 are arranged between the channels 7 in the opposite grooves 6b of the panels 3,4 so as to by clamping the clamping of said panels one against each other.
  • the electric heating cord 5 is thus sandwiched between opposite 6b grooves of each panel 3,4 and is held in place in the body of heat 1 with leaves 10,11.
  • Several ways to clamping 20 are provided and distributed over the entire surface of the heating element 1.
  • the heating device according to the invention into a towel radiator and ensures good control and a uniform temperature distribution over the entire surface of the heating body 1 thanks to the addition an additional radiation surface consisting of the sheet or sheets 10.11.
  • This thermal diffusion effect is completed by the free circulation of air contained in the body of heats 1 through channels 7.
  • the enclosure formed by the heating body 1 is open to its part upper and / or lower so as to favor the convection and free air circulation in the channels 7.
  • the electric heating cord 5 can be very easily set up and shaped on any of 10,11 sheets by simple gluing and adding the second sheet of flexible material good conductor of heat also presents no difficulty particular implementation.
  • the assembly of the assembly thus formed between the panels 3,4 no longer requires whereas a simple position adjustment so as to align the perforations 18 of the sheets 10,11 with those provided in the panels 3.4.
  • the overall operation of mounting is thus greatly simplified.
  • the heating device according to the invention preferably has two sheets of aluminum coating the electric heating cord 5, but it is obvious that the use of a single sheet flexible aluminum can be considered. In such a case, the single aluminum sheet is obviously arranged in front panel look 3.
  • the heating device comprises, in addition to the heating body 1, an additional block 30 arranged under the lower part 1b of the latter.
  • the additional block 30 consists of a cowling 32 as well as a support piece 31 intended to fix the additional block 30 against the heating body 1 by all appropriate means, for example by screwing.
  • the cover 32 is constituted of a closed frame comprising an upper grid 34 and a front grille 33, located substantially in line with the front panel 3 of heater 1.
  • the additional block 30 includes means for heater 35 and a means of ventilation 36.
  • the ventilation means 36 is consisting of a tangential turbine extending in the plane of extension of the device along a perpendicular axis to the axis x-x 'in front of the front grid 33 which forms the air flow ejection grid.
  • the heating means 35 are preferably arranged between the upper grid 34 and the means of ventilation 36, and include dissipative elements 35b of finned heat axially mounted on an element resistive preferably armored type 35c in U shape.
  • the ventilation means 36 draws in ambient air 22, through the grid 34 and the heating means 35. The air thus heated is then ejected through the front grille 33.
  • the position of the grid 34 is advantageously chosen so that the ventilation means 36 sucks ambient air from the outside of the panel back 4. Thus the thermal balance of the heating body 1 is not disturbed by the start-up of the block additional 30.
  • a centrifugal turbine 36 ' is mounted on the rear of the front panel 3 and against the surface 4 'of the lower extreme part of the rear panel 4.
  • the dimension longitudinal along the axis x-x 'of the rear panel 4 is reduced and the heating means 35 'are constituted resistive elements with filaments.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Central Heating Systems (AREA)

Description

La présente invention se rapporte au domaine technique général des dispositifs de chauffage électrique utilisés en tant que moyen de chauffe et comportant un ou plusieurs cordons électriques chauffants.The present invention relates to the technical field general of electric heaters used in as a heating medium and comprising one or more electric heating cords.

La présente invention concerne un dispositif de chauffage, notament un sèche-serviette, comportant un corps de chauffe principal destiné à rayonner la chaleur produite par un cordon électrique chauffant s'étendant à l'intérieur dudit corps et maintenu en place à l'intérieur de ce dernier.The present invention relates to a device for heating, in particular a towel dryer, comprising a body main heater intended to radiate the heat produced by an electric heating cord extending inside of said body and held in place inside this latest.

On connait déjà un radiateur sèche-serviette constitué de plaques métalliques reliées entre elles pour former un panneau rayonnant par l'intermédiaire d'une tôle et de renforts vissés et constituer ainsi une enceinte de chauffe destinée à être fixée sur une cloison. Le radiateur comporte une série de bras supports sur lesquels on dispose les articles à sécher, et intérieurement en tant que moyen de chauffe, un cordon électrique chauffant. Ce dernier s'étend dans le corps de chauffe en formant un circuit en serpentin, le cordon électrique chauffant étant maintenu contre les plaques métalliques par coincement en force dans des nervures et languettes, ménagées dans la surface des plaques métalliques formant l'enceinte.We already know a heated towel radiator of metal plates linked together to form a radiant panel through sheet metal and bolted reinforcements and thus constitute an enclosure of heater intended to be fixed on a partition. The radiator has a series of support arms on which items to be dried, and internally as a means heater, an electric heating cord. This last extends into the heating body forming a circuit in coil, the electric heating cord being maintained against metal plates by force jamming in ribs and tabs formed in the surface of the metal plates forming the enclosure.

Un tel dispositif de chauffage est sensé respecter les normes de fonctionnement requises pour les radiateurs sèche-serviette. Ces normes définissent, au moins en partie, les contraintes thermiques qui doivent être respectées par de tels appareils et elles imposent avant tout de limiter tout danger de brulûres de l'utilisateur, en particulier de ses doigts, par contact avec la surface du radiateur. Ceci implique dans la conception de l'appareil d'arriver à obtenir une répartition homogène de la chaleur sur toute la surface rayonnante, sans apparition de zone ou points de température plus élevés que la température moyenne requise.Such a heating device is supposed to respect the operating standards required for radiators dry towel. These standards define, at least in part, the thermal stresses that need to be respected by such devices and they require before all to limit any danger of burns from the user, especially his fingers, in contact with the surface of the radiator. This implies in the design of the device to achieve a homogeneous distribution of heat over the entire radiant surface, without appearance zone or temperature points higher than the average temperature required.

L'appareil de l'art antérieur mentionné précédemment, s'il satisfait bien évidemment les normes obligatoires de température maximum admissible en un point quelconque de la surface du corps de chauffe, souffre cependant d'un inconvénient majeur lié à l'hétérogénéité des températures obtenues au niveau du corps de chauffe. Une telle hétérogénéité de température est à mettre au compte de la conception même de l'appareil qui fait intervenir une série de plaques métalliques entre les lesquelles la conduction de la chaleur ne peut être correctement maitrisée, en raison de la présence d'un grand nombre de ponts thermiques préférenciels telle que la tôle de liaison vissée joignant l'ensemble des plaques métalliques. L'hétérogénéité de température est en outre aggravée par la relation thermique directe existant entre le cordon électrique chauffant et les faces intérieures des plaques métalliques. Par ailleurs, il s'avère que le montage par coincement du cordon électrique chauffant, directement dans des zones préformées des plaques métalliques rend l'opération de montage difficile et longue, alors que sa parfaite exécution est malgré tout impérative si l'on veut que le radiateur fonctionne correctement. Par ailleurs, l'augmentation de puissance de chauffe d'un tel radiateur sèche-serviette connu, ne peut être obtenu, si l'on veut conserver une bonne homogénéité de température, que part l'adjonction d'une soufflerie interne favorisant la dissipation thermique. Cet équipement complémentaire a, bien évidemment, une incidence négative sur les prix de vente de l'appareil de chauffage. Enfin, la puissance de cet appareil étant régulièrement répartie sur toute sa surface, la convection naturelle est à l'origine de la création d'une zone plus chaude à la partie supérieure de l'appareil. The apparatus of the prior art mentioned above, if it obviously meets the mandatory standards of maximum allowable temperature at any point in the surface of the heating body, however suffers from major drawback linked to the heterogeneity of temperatures obtained at the level of the heating body. Such a temperature heterogeneity is due to the very design of the device which involves a series of metal plates between which conduction heat cannot be properly controlled, due to the presence of a large number of thermal bridges preferential such as the screwed connection plate joining all of the metal plates. The heterogeneity of temperature is further aggravated by the thermal relationship direct existing between the electric heating cord and the inner faces of the metal plates. By elsewhere, it turns out that the assembly by wedging the electric heating cord, directly in areas preformed metal plates makes the operation of difficult and long assembly, while its perfect execution is nonetheless imperative if we want the radiator is working properly. Otherwise, the increase in heating power of such a radiator towel warmer known, cannot be obtained if you want keep a good temperature uniformity, that share the addition of an internal blower promoting thermal dissipation. This additional equipment has, obviously a negative impact on the prices of sale of the heater. Finally, the power of this device being regularly distributed over its entire surface, natural convection is at the origin of the creation of a warmer area at the top of the device.

On connaít également, par l'intermédiaire du document WO-A-90 11002, un dispositif de chauffage comportant un corps de chauffe formant une surface externe de rayonnement de la chaleur produite par un cordon électrique chauffant. Ce dernier s'étend à l'intérieur du corps chauffant et, est fixé par contact en échange thermique entre deux plaques réalisées à partir du type "béton". Les deux plaques sont, en outre, surmoulées l'une sur l'autre autour du cordon électrique. Les plaques de béton sont renforcées à l'aide de fibre de verre. We also know, through the document WO-A-90 11002, a heating device comprising a heating body forming a surface external radiation of the heat produced by a electric heating cord. The latter extends to inside the heating body and, is fixed by contact in heat exchange between two plates made from the "concrete" type. The two plates are, moreover, overmolded around each other electrical cord. The concrete slabs are reinforced with fiberglass.

L'objet de l'invention vise en conséquence à remédier aux différents inconvénients énumérés précédemment, et à fournir un dispositif de chauffage, notamment sèche-serviette, dans lequel la chaleur produite par le moyen de chauffe est répartie de manière homogène sur toute la surface de rayonnement à l'aide de moyens simples, bon marché, et d'un montage facile.The object of the invention therefore aims to remedy to the various drawbacks listed above, and to provide a heating device, in particular a towel dryer, in which the heat produced by means of heating is distributed evenly over the entire radiation surface using simple means, good market, and easy to assemble.

Un objet complémentaire de l'invention vise à fournir un dispositif de chauffage, notamment sèche-serviette, dans lequel la transmission de chaleur entre le cordon électrique chauffant et la surface de rayonnement de la chaleur est améliorée, et dans lequel le mode de fixation du moyen de chauffe proprement dit par rapport au corps de chauffe, est simplifié.A complementary object of the invention aims to provide a heating device, in particular a towel warmer, in which the heat transmission between the cord electric heater and the radiation surface of the heat is improved, and in which the mode of attachment of the heating means proper with respect to the body of heating, is simplified.

Un objet complémentaire de l'invention est de fournir un dispositif de chauffage, notamment sèche-serviette, dans lequel l'émission de chaleur est maitrisée et constante en tout point de la surface de rayonnement extérieure et ce quelle que soit la position occupée par le cordon chauffant relativement à la partie basse et haute du corps de chauffe.A complementary object of the invention is to provide a heating device, in particular a towel warmer, in which the heat emission is controlled and constant in any point on the outside radiation surface and this regardless of the position occupied by the heating cord relatively to the lower and upper part of the body of heated.

Un autre objet de l'invention est d'accélerer de manière significative la vitesse de séchage des serviettes suspendues sur le dispositif.Another object of the invention is to accelerate significantly the speed of towel drying hanging on the device.

Les buts assignés à l'invention sont atteints à l'aide d'un dispositif de chauffage, notamment un sèche-serviette, comportant un corps de chauffe formant une surface de rayonnement externe de la chaleur produite par un cordon électrique chauffant s'étendant à l'intérieur dudit corps caractérisé en ce que le cordon électrique chauffant est fixé en contact d'échange thermique sur au moins une feuille d'un matériau souple bon conducteur de chaleur constituant une surface de rayonnement et de conduction interne s'étendant en regard de la surface de rayonnement externe.The aims assigned to the invention are achieved using a heating device, in particular a towel dryer, comprising a heating body forming a surface of external radiation of the heat produced by a cord electric heater extending inside said body characterized in that the electric heating cord is fixed in heat exchange contact on at least one sheet of flexible material good heat conductor constituting a radiation and conduction surface internal extending opposite the radiation surface external.

D'autres particularités et avantages de l'invention apparaitront et ressortiront plus en détails à la lecture de la description faite ci-après, en référence aux dessins annexés, donnés à titre d'exemple illustratifs dans lesquels :

  • La Figure 1 représente une vue de face d'un dispositif de chauffage conforme à l'invention.
  • La Figure 2 montre selon une vue de face partiellement arrachée, un détail de la fixation du cordon électrique chauffant.
  • La Figure 3 montre selon une vue en coupe transversale partielle prise selon la ligne III-III de la Figure 1, la structure interne d'un dispositif de chauffage conforme à l'invention.
  • La Figure 4 montre une variante de réalisation du dispositif de chauffage conforme à l'invention selon une vue en coupe transversale longitudinale.
  • La Figure 5 montre une variante supplémentaire de réalisation du dispositif de chauffage conforme à l'invention
Other features and advantages of the invention will appear and emerge in more detail on reading the description given below, with reference to the accompanying drawings, given by way of illustrative example in which:
  • Figure 1 shows a front view of a heating device according to the invention.
  • Figure 2 shows in a partially cut away front view, a detail of the fixing of the electric heating cord.
  • Figure 3 shows in a partial cross-sectional view taken along line III-III of Figure 1, the internal structure of a heating device according to the invention.
  • Figure 4 shows an alternative embodiment of the heating device according to the invention in a longitudinal cross-sectional view.
  • Figure 5 shows an additional alternative embodiment of the heating device according to the invention

Le dispositif de chauffage conforme à l'invention tel que représenté à la Figure 1 comporte un corps de chauffe 1 présentant une partie supérieure la et une partie inférieure 1b, et destiné à être fixé, par tout moyen approprié, non représenté sur les figures, sur une cloison par exemple. Le corps de chauffe 1 est pourvu, de préférence dans sa partie supérieure 1a, d'au moins une et de préférence deux barres support 2 aptes à recevoir des articles à sécher, tels que des serviettes.The heating device according to the invention as as shown in Figure 1 includes a heater 1 having an upper part 1a and a part lower 1b, and intended to be fixed, by any means suitable, not shown in the figures, on a partition for example. The heating body 1 is provided with preferably in its upper part 1a, of at least one and preferably two support bars 2 suitable for receiving items to dry, such as towels.

Le corps de chauffe 1 est constitué, tel que cela est montré à la figure 3, d'un panneau avant 3, et d'un panneau arrière 4 destiné à faire face au mur ou à la cloison support. Le corps de chauffe 1 forme ainsi par l'intermédiaire des panneaux 3 et 4 une surface de rayonnement externe de la chaleur produite par un cordon électrique chauffant 5 s'étendant à l'intérieur de l'enceinte définie par les panneaux 3 et 4.The heating body 1 is constituted, as it is shown in Figure 3, a front panel 3, and a panel rear 4 intended to face the wall or partition support. The heater 1 thus forms by through panels 3 and 4 a surface of external radiation of the heat produced by a cord electric heater 5 extending inside the enclosure defined by panels 3 and 4.

Ces derniers sont réalisés sous la forme de deux plaques métalliques sensiblement rectangulaires dont la surface est irrégulière afin d'augmenter la surface d'échange thermique avec l'extérieur, à la fois par rayonnement et par convection, chaque plaque est pourvue d'ondulations 6 séparées par des gorges 6b s'étendant selon l'axe principal longitudinal x-x' de chaque panneau 3,4. Le corps de chauffe 1 étant conçu pour être fixé sensiblement verticalement sur une cloison support, les ondulations 6 forment intérieurement au corps de chauffe 1 une série de canaux 7 s'étendant selon l'axe x-x' sensiblement verticalement. Avantageusement, comme cela est montré à la figure 3, la surface d'échange thermique du panneau arrière 4 est supérieure à la surface d'échange du panneau avant 3. Cette différence dans les propriétés d'échange thermique peut être obtenue d'une manière simple en augmentant la profondeur des gorges 6b du panneau arrière 4 par rapport à la profondeur des gorges 6b du panneau avant 3. Le pas de la succession des gorges 6b et des ondulations 6 est choisi pour que au moins certaines gorges 6 de chaque panneau 3,4 opposé coïncident lors de la mise en place des panneaux 3,4.These are made in the form of two substantially rectangular metal plates, the surface is irregular in order to increase the surface heat exchange with the outside, both by radiation and by convection, each plate is provided corrugations 6 separated by grooves 6b extending along the main longitudinal axis x-x 'of each panel 3.4. The heater 1 being designed to be fixed substantially vertically on a support partition, the corrugations 6 internally form the heater 1 a series of channels 7 extending along the axis x-x 'substantially vertically. Advantageously, as shown in the Figure 3, the heat exchange surface of the rear panel 4 is greater than the exchange surface of the front panel 3. This difference in heat exchange properties can be obtained in a simple way by increasing the depth of the grooves 6b of the rear panel 4 relative to the depth of the grooves 6b of the front panel 3. The pitch of the succession of grooves 6b and undulations 6 is chosen so that at least some grooves 6 of each panel 3,4 opposite coincide when placing the panels 3.4.

Le cordon électrique chauffant 5 est de type connu, et possède par exemple une double isolation silicone, et est fixé en contact d'échange thermique sur au moins une feuille d'un matériau souple 10 bon conducteur de chaleur s'étendant dans le corps de chauffe 1 en regard de la ou des surfaces internes des panneaux 3 et 4. Le matériau souple bon conducteur de chaleur peut être constitué par exemple de feuilles d'aluminium ou de cuivre d'une épaisseur moyenne de l'ordre de 2/10 de mm. De manière avantageuse, le cordon électrique chauffant 5 est inséré et fixé entre deux feuilles 10,11, d'aluminium adhérant l'une contre l'autre et enrobant le cordon 5. L'adhésion du cordon chauffant 5 sur la ou les feuilles 10,11 ainsi que l'adhésion des deux feuilles l'une sur l'autre est obtenue de manière particulièrement avantageuse par simple collage à l'aide d'une colle résistant à la température. Bien évidemment, d'autres moyens d'adhésion sont envisageables.The electric heating cord 5 is of known type, and for example has double silicone insulation, and is fixed in heat exchange contact on at least one sheet of flexible material 10 good heat conductor extending in the heating body 1 opposite the or internal surfaces of panels 3 and 4. The material flexible good heat conductor can consist of example of aluminum or copper sheets of a average thickness of the order of 2/10 mm. So advantageous, the electric heating cord 5 is inserted and fixed between two sheets 10,11 of aluminum adhering one against each other and wrapping the cord 5. The adhesion of the heating cord 5 on the sheet or sheets 10,11 as well as the adhesion of the two sheets to each other is obtained particularly advantageously by simple bonding using a temperature resistant glue. Good obviously, other means of adhesion are possible.

Comme cela est montré, en particulier à la figure 2, les feuilles 10,11, présentent une forme géométrique sensiblement équivalente à celle de chaque panneau 3,4, et s'étendent sur une surface également sensiblement équivalente ou du moins légèrement inférieure à celle des panneaux 3,4.As shown, especially in Figure 2, the sheets 10,11, have a geometric shape substantially equivalent to that of each panel 3,4, and extend over a surface also substantially equivalent or at least slightly lower than that of panels 3,4.

Avantageusement, le cordon électrique chauffant 5 est disposé et monté entre les deux feuilles 10 et 11 de manière à former, de la partie haute la vers la partie basse 1b du corps de chauffe 1, un circuit en serpentin s'étendant sensiblement sur toute la surface du corps de chauffe 1 à partir d'un brin supérieur froid 12 jusqu'à un brin inférieur 13 froid. De manière préférencielle, le circuit en serpentin comporte une série de brins rectilignes superposés 15 s'étendant selon une direction sensiblement perpendiculaire à l'axe x-x' et, par conséquent, selon une direction perpendiculaire aux canaux 7. De manière également avantageuse, la distance entre les brins rectilignes superposés et adjacents 15 du circuit en serpentin est variable selon la position occupée par chaque brin relativement à la partie basse 1b ou haute 1a du corps de chauffe 1. Ainsi, tel que cela est montré à la figure 2, la distance moyenne d2 entre deux brins superposés 15 de la partie inférieure 1b du corps de chauffe est plus faible que la distance d1 entre deux brins rectilignes 15 s'étendant dans la partie supérieure du corps de chauffe 1. Bien évidemment, la variation de distance peut être continue ou discontinue entre les parties supérieure et inférieure du corps de chauffe 1. On fait ainsi varier de manière simple la densité du cordon électrique chauffant dans des zones privilégiées du corps de chauffe 1, et en particulier dans sa partie inférieure 1b afin de compenser l'effet thermique de convection tendant à maintenir la zone supérieure du corps de chauffe 1 à une température moyenne plus élevée.Advantageously, the electric heating cord 5 is arranged and mounted between the two sheets 10 and 11 of so as to form, from the upper part to the part low 1b of the heating body 1, a serpentine circuit extending substantially over the entire surface of the body of heats 1 from a cold upper strand 12 to a lower strand 13 cold. Preferably, the serpentine circuit has a series of strands superimposed straight lines 15 extending in one direction substantially perpendicular to the axis x-x 'and, by therefore, in a direction perpendicular to the canals 7. Also advantageously, the distance between the superimposed and adjacent straight strands 15 of the circuit in coil is variable depending on the position occupied by each strand relative to the lower part 1b or upper part 1a of the heating body 1. Thus, as shown in the Figure 2, the average distance d2 between two strands superimposed 15 of the lower part 1b of the body of heater is less than the distance d1 between two strands straight lines 15 extending in the upper part of the heating element 1. Obviously, the variation of distance can be continuous or discontinuous between upper and lower parts of the heating body 1. On thus varies the density of the cord in a simple manner electric heating in privileged areas of the body 1, and in particular in its lower part 1b to compensate for the thermal convection effect tending to maintain the upper zone of the heating body 1 at a higher average temperature.

La compensation de l'effet thermique de convection peut bien évidemment être obtenue à l'aide d'un circuit du cordon chauffant 5 différent du circuit en serpentin représenté aux figures 1 et 2, sans pour autant sortir du cadre de l'invention.Compensation of the thermal convection effect can obviously be obtained using a circuit of the heating cord 5 different from the serpentine circuit shown in Figures 1 and 2, without leaving the part of the invention.

Les feuilles de matériau bon conducteur de chaleur 10,11 sont pourvues d'une série de perforations 18 ménagées à intervalle régulier selon la direction axiale x-x' et selon une direction perpendiculaire audit axe, entre les brins et boucles du circuit en serpentin. Les perforations 18 servent à la fixation de l'ensemble des panneaux 3 et 4 avec les feuilles 10,11 enrobant le cordon électrique chauffant 5. La fixation est assurée à l'aide de moyens de serrage 20 (figure 3), tels que des goujons traversants, dont l'extrémité chanfreinée est vissée dans l'épaisseur du panneau avant 3 alors que l'extrémité libre débouchant par un orifice dans le panneau arrière 4 reçoit un écrou 21. Les moyens de serrage 20 sont disposés entre les canaux 7 dans les gorges 6b opposés des panneaux 3,4 de manière à assurer par pincement le serrage desdits panneaux l'un contre l'autre. Le cordon électrique chauffant 5 est ainsi pris en sandwich entre les gorges 6b opposées de chaque panneau 3,4 et est maintenu en place dans le corps de chauffe 1 avec les feuilles 10,11. Plusieurs moyens de serrage 20 sont prévus et répartis sur toute la surface du corps de chauffe 1.Sheets of good heat conductive material 10.11 are provided with a series of perforations 18 provided at regular intervals in the axial direction x-x 'and in a direction perpendicular to said axis, between the strands and loops of the serpentine circuit. The perforations 18 are used to fix all the panels 3 and 4 with the sheets 10,11 coating the electric cord 5. The fixing is ensured by means of tightening 20 (FIG. 3), such as through studs, whose chamfered end is screwed into the thickness of the front panel 3 while the free end opening through a hole in the rear panel 4 receives a nut 21. The clamping means 20 are arranged between the channels 7 in the opposite grooves 6b of the panels 3,4 so as to by clamping the clamping of said panels one against each other. The electric heating cord 5 is thus sandwiched between opposite 6b grooves of each panel 3,4 and is held in place in the body of heat 1 with leaves 10,11. Several ways to clamping 20 are provided and distributed over the entire surface of the heating element 1.

Le dispositif de chauffage consiste selon l'invention en un radiateur sèche-serviettes et assure une bonne maitrise et une répartition homogène de la température sur toute la surface du corps de chauffe 1 grâce à l'adjonction d'une surface de rayonnement supplémentaire constituée par la ou les feuilles 10,11. Ces dernières assurent en effet par conduction et rayonnement une première diffusion et répartition de l'énergie thermique fournie par le cordon électrique chauffant 5 qui est en contact thermique direct avec elles. Cet effet de diffusion thermique est complété par la libre circulation de l'air contenu dans le corps de chauffe 1 à travers les canaux 7. A cet effet, l'enceinte formée par le corps de chauffe 1 est ouverte à sa partie supérieure et/ou inférieure de manière à favoriser la convection et la circulation libre de l'air dans les canaux 7. Le cordon électrique chauffant 5 peut être très facilement mis en place et mis en forme sur l'une des feuilles 10,11 par simple collage et l'adjonction de la seconde feuille du matériau souple bon conducteur de chaleur ne présente également aucune difficulté particulière de mise en place. Le montage de l'ensemble ainsi constitué entre les panneaux 3,4 ne nécessite plus alors qu'un simple ajustement de position de manière à aligner les perforations 18 des feuilles 10,11 avec celles prévues dans les panneaux 3,4. L'opération globale de montage est ainsi grandement simplifiée.The heating device according to the invention into a towel radiator and ensures good control and a uniform temperature distribution over the entire surface of the heating body 1 thanks to the addition an additional radiation surface consisting of the sheet or sheets 10.11. These last indeed by conduction and radiation a first diffusion and distribution of thermal energy supplied by the cord electric heater 5 which is in direct thermal contact with them. This thermal diffusion effect is completed by the free circulation of air contained in the body of heats 1 through channels 7. For this purpose, the enclosure formed by the heating body 1 is open to its part upper and / or lower so as to favor the convection and free air circulation in the channels 7. The electric heating cord 5 can be very easily set up and shaped on any of 10,11 sheets by simple gluing and adding the second sheet of flexible material good conductor of heat also presents no difficulty particular implementation. The assembly of the assembly thus formed between the panels 3,4 no longer requires whereas a simple position adjustment so as to align the perforations 18 of the sheets 10,11 with those provided in the panels 3.4. The overall operation of mounting is thus greatly simplified.

Le dispositif de chauffage conforme à l'invention comporte de manière préférencielle deux feuilles d'aluminium enrobant le cordon électrique chauffant 5, mais il est bien évident que le recours à une seule feuille d'aluminium souple peut être envisagé. Dans un tel cas, la feuille d'aluminium unique est bien évidemment disposée en regard du panneau avant 3.The heating device according to the invention preferably has two sheets of aluminum coating the electric heating cord 5, but it is obvious that the use of a single sheet flexible aluminum can be considered. In such a case, the single aluminum sheet is obviously arranged in front panel look 3.

Selon une variante de réalisation représentée à la figure 4 le dispositif de chauffage conforme à l'invention comporte, outre le corps de chauffe 1, un bloc additionnel 30 agencé sous la partie inférieure 1b de ce dernier.According to an alternative embodiment shown in the Figure 4 the heating device according to the invention comprises, in addition to the heating body 1, an additional block 30 arranged under the lower part 1b of the latter.

Le bloc additionnel 30 est constitué d'un capotage 32 ainsi que d'une pièce de support 31 destinée à fixer le bloc additionnel 30 contre le corps de chauffe 1 par tous moyens appropriés, et par exemple par vissage.The additional block 30 consists of a cowling 32 as well as a support piece 31 intended to fix the additional block 30 against the heating body 1 by all appropriate means, for example by screwing.

Selon la variante d'exécution de l'invention représentée à la figure 4, le capotage 32 est constitué d'un cadre fermé comprenant une grille supérieure 34 et une grille frontale 33, située sensiblement à l'aplomb du panneau avant 3 du dispositif de chauffage 1.According to the variant of the invention shown in Figure 4, the cover 32 is constituted of a closed frame comprising an upper grid 34 and a front grille 33, located substantially in line with the front panel 3 of heater 1.

Le bloc additionnel 30 comporte des moyens de chauffe 35 ainsi qu'un moyen de ventilation 36.The additional block 30 includes means for heater 35 and a means of ventilation 36.

Avantageusement, le moyen de ventilation 36 est constitué d'une turbine tangentielle s'étendant dans le plan d'extension de l'appareil selon un axe perpendiculaire à l'axe x-x' devant la grille frontale 33 qui forme la grille d'éjection du flux d'air.Advantageously, the ventilation means 36 is consisting of a tangential turbine extending in the plane of extension of the device along a perpendicular axis to the axis x-x 'in front of the front grid 33 which forms the air flow ejection grid.

Les moyens de chauffe 35 sont préférentiellement agencés entre la grille supérieure 34 et le moyen de ventilation 36, et comprennent des éléments dissipateurs 35b de chaleur à ailettes montés axialement sur un élément résistif de préférence de type blindé 35c en forme de U.The heating means 35 are preferably arranged between the upper grid 34 and the means of ventilation 36, and include dissipative elements 35b of finned heat axially mounted on an element resistive preferably armored type 35c in U shape.

En fonctionnement, le moyen de ventilation 36 aspire de l'air ambiant 22, à travers la grille 34 et les moyens de chauffe 35. L'air ainsi réchauffé est ensuite éjecté à travers la grille frontale 33.In operation, the ventilation means 36 draws in ambient air 22, through the grid 34 and the heating means 35. The air thus heated is then ejected through the front grille 33.

La géométrie de cette dernière permet de générer un flux ascendant 23 d'air chaud le long du panneau rayonnant avant 3.The geometry of the latter allows to generate an upward flow 23 of hot air along the panel radiating before 3.

La position de la grille 34 est avantageusement choisie de sorte que le moyen de ventilation 36 aspire l'air ambiant à partir de la face externe du panneau arrière 4. Ainsi l'équilibre thermique du corps de chauffe 1 ne se trouve pas perturbé par la mise en route du bloc additionnel 30. The position of the grid 34 is advantageously chosen so that the ventilation means 36 sucks ambient air from the outside of the panel back 4. Thus the thermal balance of the heating body 1 is not disturbed by the start-up of the block additional 30.

Il est également envisageable d'utiliser comme cela est montré à la figure 5, une turbine centrifuge 36'. Cette dernière est montée à l'arrière du panneau avant 3 et contre la surface 4' de la partie extrême inférieure du panneau arrière 4. Dans cette réalisation la dimension longitudinale selon l'axe x-x' du panneau arrière 4 est réduite et les moyens de chauffe 35' sont constitués d'éléments résistifs à filaments.It is also conceivable to use as this is shown in Figure 5, a centrifugal turbine 36 '. The latter is mounted on the rear of the front panel 3 and against the surface 4 'of the lower extreme part of the rear panel 4. In this embodiment the dimension longitudinal along the axis x-x 'of the rear panel 4 is reduced and the heating means 35 'are constituted resistive elements with filaments.

Claims (13)

  1. A heater appliance, in particular a towel-dryer, including a heater body (1) forming an external radiating surface for radiating the heat produced by an electric heating cord (5) which extends inside said body, said appliance being characterized in that the electric heating cord (5) is fixed in heat exchange contact on at least one sheet (10, 11) of flexible material that is a good conductor of heat and which constitutes an internal radiating and conducting surface which extends facing the external radiating surface.
  2. An appliance according to claim 1, characterized in that the electric heating cord (5) is inserted and fixed between two sheets (10, 11) of flexible material that is a good conductor of heat, the two sheets (10, 11) being bonded together, thereby covering said cord (5), e.g. by gluing.
  3. An appliance according to claim 1 or 2, characterized in that the heater body (1) defines a chamber including as its radiating surface both a front panel (3) and a back panel (4), each panel (3, 4) being provided with ridges (6) and grooves (6b) which extend substantially vertically in order to form air flow channels (7) inside the chamber.
  4. An appliance according to claim 3, characterized in that the sheet(s) (10, 11) of material that is a good conductor of heat and the electric heating cord (5) are held in place between and against the front and back panels (3, 4) by pinching via clamping means (20) such as through-bolts, acting on said panels (3,4) in order to clamp them together.
  5. An appliance according to claim 3 or 4, characterized in that the chamber is open at its upper portion (1a) and/or at its lower portion (1b) so as to facilitate convection of the air in the channels.
  6. An appliance according to any one of claims 1 to 5, characterized in that the electric heating cord (5) is fixed on the sheet(s) (10, 11) of material that is a good conductor of heat in order to form a sinuous circuit which extends substantially over the entire radiating surface.
  7. An appliance according to claim 6, characterized in that the sinuous circuit includes a series of superposed rectilinear strands (15) which extend in a direction substantially perpendicular to the vertical axis x-x' of the heater body (1).
  8. An appliance according to claim 7, characterized in that the distance (d1, d2) between the superposed rectilinear strands (15) of the sinuous circuit varies with the position that they occupy relative to the bottom and top portions (1b, 1a) of the heater body (1).
  9. An appliance according to claim 8, characterized in that the distance (d2) between the rectilinear strands (15) of the lower portion (1b) of the heater body (1) is less than the distance (d1) separating the rectilinear strands of the upper portion (1a).
  10. An appliance according to any one of claims 1 to 9, characterized in that it includes fan means (36) arranged in the lower portion of the heater body (1) for emitting an upward flow of air along at least a part of the face of the front panel (3).
  11. An appliance according to claim 10, characterized in that the fan means (36) sucks in the air preferably from the face of the back panel (4).
  12. An appliance according to any one of claims 10 to 11, characterized in that the fan means (36) is associated with heater means (35) preferably constituted by metal-clad resistive elements.
  13. An appliance according to any one of claims 10 to 12, characterized in that the fan means (36) is constituted by a tangential turbine associated with a U-shaped resistance on which finned heat dissipater elements (35b) are axially mounted.
EP93420069A 1992-04-29 1993-02-15 Heater, in particular towel dryer, with electric heating cord Expired - Lifetime EP0568464B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9205543A FR2690807B1 (en) 1992-04-29 1992-04-29 HEATING DEVICE, ESPECIALLY TOWEL DRYER, WITH ELECTRIC HEATING CORD.
FR9205543 1992-04-29

Publications (2)

Publication Number Publication Date
EP0568464A1 EP0568464A1 (en) 1993-11-03
EP0568464B1 true EP0568464B1 (en) 1998-01-07

Family

ID=9429558

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93420069A Expired - Lifetime EP0568464B1 (en) 1992-04-29 1993-02-15 Heater, in particular towel dryer, with electric heating cord

Country Status (3)

Country Link
EP (1) EP0568464B1 (en)
DE (1) DE69316075T2 (en)
FR (1) FR2690807B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1288587A2 (en) 2001-09-04 2003-03-05 KERMI GmbH Radiator

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1542572B1 (en) * 2002-08-15 2010-01-13 Karin Metalli OY Dryer
DE102016111759A1 (en) * 2016-06-27 2017-12-28 Lukas Jaworek Attachment for heat dissipation for a radiator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1966975B2 (en) * 1969-06-11 1977-09-22 Ausscheidung aus 19 29 529 Schreiber geb Becker, Margarethe, Schreiber, Ulrich Hans, Schreiber, Susanne Barbara, 6000 Frankfurt WALL OR FLOOR COVERING PLATE AS PREFABRICATED INSTALLATION PLATE WITH BASE AND TOP PLATE
DE3327893A1 (en) * 1983-08-02 1985-02-14 Joachim Dr.-Ing. 8070 Ingolstadt Hess Radiator, in particular for small rooms
SE8900844D0 (en) * 1989-03-10 1989-03-10 Lg Innovations Ab C O Lars Ger DEVICE FOR CONVERSION OF ELECTRICAL ENERGY TO HEAT ENERGY

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1288587A2 (en) 2001-09-04 2003-03-05 KERMI GmbH Radiator

Also Published As

Publication number Publication date
FR2690807B1 (en) 1999-01-15
EP0568464A1 (en) 1993-11-03
DE69316075D1 (en) 1998-02-12
DE69316075T2 (en) 1998-06-04
FR2690807A1 (en) 1993-11-05

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