EP0568464B1 - Heizgerät, insbesondere Handtuchtrockner, mit elektrischer Heizleitung - Google Patents

Heizgerät, insbesondere Handtuchtrockner, mit elektrischer Heizleitung 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
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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
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English (en)
French (fr)
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EP0568464A1 (de
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/de
Application granted granted Critical
Publication of EP0568464B1 publication Critical patent/EP0568464B1/de
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)

Claims (13)

  1. Heizvorrichtung, insbesondere Handtuchtrockner, mit einem Heizkörper (1), der eine äußere Strahlungsfläche für die Wärme bildet, die von einem elektrischen Heizdraht (5) erzeugt wird, der sich im Inneren des Körpers erstreckt, dadurch gekennzeichnet, daß der elektrische Heizdraht (5) in Wärmeaustauschberührung an wenigstens einer Folie (10, 11) aus einem nachgiebigen, gut wärmeleitenden Material befestigt ist, die eine innere Strahlungs- und Leitungsfläche bildet, die sich gegenüber der äußeren Strahlungsfläche erstreckt.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der elektrische Heizdraht (5) zwischen zwei Folien (10, 11) aus einem nachgiebigen, gut wärmeleitenden Material eingesetzt und befestigt ist, wobei die beiden Folien (10, 11) aneinander anhaften und den Draht (5) umhüllen, beispielsweise durch Verkleben.
  3. Vorrichtung nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, daß der Heizkörper (1) ein Gehäuse bildet, das als Strahlungsfläche eine vordere Tafel (3) und eine hintere Tafel (4) aufweist, wobei jede Tafel (3, 4) mit Wellen (6) und Vertiefungen (6b) versehen ist, die sich im wesentlichen vertikal erstrecken, um im Inneren des Gehäuses Kanäle (7) zur Luftzirkulation zu bilden.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Folie oder Folien (10, 11) aus gut wärmeleitendem Material und der elektrische Heizdraht (5) an ihrem Platz zwischen der vorderen Tafel (3) und der hinteren Tafel (4) und in Anlage an diesen durch Klemmen mittels Spannmitteln (20) gehalten werden, beispielsweise mittels durchgehender Stiftschrauben, die auf die Tafeln (3, 4) einwirken, um diese gegeneinander zu verspannen.
  5. Vorrichtung nach Anspruch 3 oder Anspruch 4, dadurch gekennzeichnet, daß das Gehäuse an seinem oberen Teil (1a) und/oder unteren Teil (1b) geöffnet ist, um die Luftkonvektion in den Kanälen zu unterstützen.
  6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der elektrische Heizdraht (5) an der Folie oder den Folien (10, 11) aus gut wärmeleitendem Material befestigt ist, um einen serpentinenartigen Kreis zu bilden, der sich im wesentlichen über die gesamte Strahlungsfläche erstreckt.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß der serpentinenartige Kreis eine Reihe von übereinanderliegenden geradlinigen Abschnitten (15) aufweist, die sich entlang einer Richtung erstrecken, die im wesentlichen senkrecht zur vertikalen Achse x-x' des Heizkörpers (1) ist.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß der Abstand (d1, d2) zwischen den übereinanderliegenden geradlinigen Abschnitten (15) des serpentinenartigen Kreises sich in Abhängigkeit von der Position ändert, die sie relativ zum unteren Teil (1b) und oberen Teil (1a) des Heizkörpers (1) einnehmen.
  9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß der Abstand (d2) zwischen den geradlinigen Abschnitten (15) des unteren Teils (16) des Heizkörpers (1) kleiner als der Abstand (d1) ist, der die geradlinigen Abschnitte des oberen Teils (1a) trennt.
  10. Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß sie ein am unteren Teil des Heizkörpers (1) angeordnetes Ventilationsmittel (36) aufweist, um einen Luftstrom abzugeben, der wenigstens teilweise entlang der Fläche der vorderen Tafel (3) aufsteigt.
  11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß das Ventilationsmittel (36) Luft vorzugsweise von der Seite der hinteren Tafel (4) ansaugt.
  12. Vorrichtung nach einem der Ansprüche 10 und 11, dadurch gekennzeichnet, daß das Ventilationsmittel (36) Heizmitteln (35) zugeordnet ist, die vorzugsweise aus gekapselten Widerstandselementen bestehen.
  13. Vorrichtung nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, daß das Ventilationsmittel (36) aus einer Tangential-Turbine besteht, der ein U-förmiger Widerstand zugeordnet ist, an welchem Wärmedissipationselemente (35b) mit Flügeln angebracht sind.
EP93420069A 1992-04-29 1993-02-15 Heizgerät, insbesondere Handtuchtrockner, mit elektrischer Heizleitung Expired - Lifetime EP0568464B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9205543 1992-04-29
FR9205543A FR2690807B1 (fr) 1992-04-29 1992-04-29 Dispositif de chauffage, notamment seche-serviette, a cordon electrique chauffant.

Publications (2)

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

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Application Number Title Priority Date Filing Date
EP93420069A Expired - Lifetime EP0568464B1 (de) 1992-04-29 1993-02-15 Heizgerät, insbesondere Handtuchtrockner, mit elektrischer Heizleitung

Country Status (3)

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

Cited By (1)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003251018A1 (en) * 2002-08-15 2004-03-03 Karin Metalli Oy Dryer
DE102016111759A1 (de) * 2016-06-27 2017-12-28 Lukas Jaworek Aufsatz zur Wärmeabfuhr für einen Heizkörper

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1966975B2 (de) * 1969-06-11 1977-09-22 Ausscheidung aus 19 29 529 Schreiber geb Becker, Margarethe, Schreiber, Ulrich Hans, Schreiber, Susanne Barbara, 6000 Frankfurt Wand- oder fussbodenbelagplatte als vorgefertigte installationsplatte mit grund- und deckplatte
DE3327893A1 (de) * 1983-08-02 1985-02-14 Joachim Dr.-Ing. 8070 Ingolstadt Hess Heizkoerper, insbesondere fuer kleine raeume
SE8900844D0 (sv) * 1989-03-10 1989-03-10 Lg Innovations Ab C O Lars Ger Anordning foer omvandling av elenergi till vaermeenergi

Cited By (1)

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

Also Published As

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

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