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EP0568464A1 - Heizgerät, insbesondere Handtuchtrockner, mit elektrischer Heizleitung - Google Patents

Heizgerät, insbesondere Handtuchtrockner, mit elektrischer Heizleitung Download PDF

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Publication number
EP0568464A1
EP0568464A1 EP93420069A EP93420069A EP0568464A1 EP 0568464 A1 EP0568464 A1 EP 0568464A1 EP 93420069 A EP93420069 A EP 93420069A EP 93420069 A EP93420069 A EP 93420069A EP 0568464 A1 EP0568464 A1 EP 0568464A1
Authority
EP
European Patent Office
Prior art keywords
heating
electric heating
cord
heating body
sheets
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93420069A
Other languages
English (en)
French (fr)
Other versions
EP0568464B1 (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
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 SEB SA filed Critical SEB SA
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 general technical field of electric heating devices used as a heating means and comprising one or more electric heating cords.
  • the present invention relates to a heating device, in particular a towel dryer, comprising a main heating body intended to radiate the heat produced by an electric heating cord extending inside said body and held in place inside this last.
  • a towel radiator consisting of metal plates connected together to form a radiant panel via a sheet metal and screwed reinforcements and thus constitute a heating chamber intended to be fixed on a partition.
  • the radiator comprises a series of support arms on which the articles to be dried are placed, and internally as a heating means, an electric heating cord.
  • the latter extends into the heating body forming a serpentine circuit, the electric heating cord being held against the 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 comply with the operating standards required for towel radiators. These standards define, at least in part, the thermal stresses which must be respected by such devices and they above all impose to limit any danger of burns from the user, in particular of his fingers, by 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 radiating surface, without the appearance of zones or temperature points higher than the average temperature required.
  • the apparatus of the prior art mentioned above although it obviously meets the mandatory standards for maximum admissible temperature at any point on the surface of the heating body, nevertheless suffers from a major drawback linked to the heterogeneity of the temperatures. obtained at the level of the heating body.
  • a heterogeneity of temperature is to be taken into account by the very design of the device which involves a series of metal plates between which the conduction of heat cannot be properly controlled, due to the presence of a large number preferential thermal bridges such as the screwed connection plate joining all of the metal plates.
  • the temperature heterogeneity is further aggravated by the direct thermal relationship existing between the electric heating cord and the inner faces of the metal plates.
  • the object of the invention therefore aims to remedy the various drawbacks listed above, and to provide a heating device, in particular a towel warmer, in which the heat produced by the heating means is distributed homogeneously over the entire surface. radiation using simple, inexpensive means and easy assembly.
  • a complementary object of the invention aims to provide a heating device, in particular a towel warmer, in which the heat transmission between the electric heating cord and the heat radiating surface is improved, and in which the method of fixing the heating means proper with respect to the heating body, is simplified.
  • An additional object of the invention is to provide a heating device, in particular a towel warmer, in which the emission of heat is controlled and constant at all points of the external radiation surface and this whatever the position occupied by the heating cord relative to the lower and upper part of the heating body.
  • Another object of the invention is to significantly accelerate the drying speed of the towels hanging on the device.
  • a heating device in particular a towel dryer, comprising a heating body forming an external radiation surface of the heat produced by an electric heating cord extending to the interior of said body characterized in that the electric heating cord is fixed in heat exchange contact on at least one sheet of a flexible material which is a good heat conductor constituting a surface of internal radiation and conduction extending opposite the radiation area external.
  • the heating device according to the invention as shown in FIG. 1 comprises a heating body 1 having an upper part 1a and a lower part 1b, and intended to be fixed, by any suitable means, not shown in the figures, on a partition for example.
  • the heating body 1 is provided, preferably in its upper part 1a, with at least one and preferably two support bars 2 capable of receiving articles to be dried, such as towels.
  • the heating body 1 is constituted, as it is shown in Figure 3, a front panel 3, and a rear panel 4 intended to face the wall or the support partition.
  • the heating body 1 thus forms, via the panels 3 and 4, an external radiation surface of the heat produced by an electric heating cord 5 extending inside the enclosure defined by the panels 3 and 4.
  • each plate is provided with corrugations 6 separated by grooves 6b extending along the main longitudinal axis xx 'of each panel 3,4.
  • the heating body 1 being designed to be fixed substantially vertically on a support partition, the corrugations 6 internally form the heating body 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 the heat exchange properties can be obtained in a way simple 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 the grooves 6b and the corrugations 6 is chosen so that at least certain grooves 6 of each panel 3 , 4 opposite coincide during the installation of the panels 3,4.
  • the electric heating cord 5 is of known type, and has for example a double silicone insulation, and is fixed in heat exchange contact on at least one sheet of a flexible material 10 good heat conductor extending in the body of heats 1 opposite the internal surface or surfaces of the panels 3 and 4.
  • the flexible material which is a good conductor of heat can consist for example of aluminum or copper sheets of a average thickness of the order of 2/10 mm.
  • the electric heating cord 5 is inserted and fixed between two sheets 10, 11, of aluminum adhering one against the other and coating 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 one another is obtained in a particularly advantageous manner by simple bonding using a temperature-resistant adhesive. Obviously, other means of accession are possible.
  • the sheets 10, 11 have a geometric shape substantially equivalent to that of each panel 3,4, and extend over an area also substantially equivalent or at least slightly less than that panels 3,4.
  • the electric heating cord 5 is disposed and mounted between the two sheets 10 and 11 so as to form, from the upper part 1a to the lower part 1b of the heating body 1, a serpentine circuit extending substantially over the entire surface of the heating body 1 from a cold upper strand 12 to a cold lower strand 13.
  • the serpentine circuit comprises a series of superimposed rectilinear strands 15 extending in a direction substantially perpendicular to the axis xx 'and, consequently, in a direction perpendicular to the channels 7.
  • the distance between the superimposed and adjacent rectilinear strands 15 of the serpentine circuit is variable according to the position occupied by each strand relative to the lower part 1b or upper part 1a of the heating body 1.
  • the distance mean d2 between two superimposed strands 15 of the lower part 1b of the heating body is less than the distance d1 between two straight strands 15 extending in the upper part of the heating body 1.
  • the variation in distance can be continuous or discontinuous between upper and lower parts of the heating body 1.
  • the density of the electric heating cord is thus varied in a simple manner in preferred areas of the heating body 1, and in particular in its lower part 1b in order to compensate for the thermal convection effect. tending to maintain the upper zone of the heating body 1 at a higher average temperature.
  • the sheets of good heat conducting material 10, 11 are provided with a series of perforations 18 formed 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 for fixing all of the panels 3 and 4 with the sheets 10, 11 coating the electric heating cord 5.
  • the fixing is ensured using clamping means 20 (FIG. 3), such as through studs, the chamfered end of which is screwed into the thickness of the front panel 3 while the free end opening out through an orifice 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 pinch the said panels against each other.
  • the electric heating cord 5 is thus sandwiched between the opposite grooves 6b of each panel 3,4 and is held in place in the heating body 1 with the sheets 10,11.
  • Several clamping means 20 are provided and distributed over the entire surface of the heating body 1.
  • the heating device consists of 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 of an additional radiation surface formed by the sheet or sheets 10, 11.
  • the latter in fact ensure by conduction and radiation a first diffusion and distribution of the thermal energy supplied by the electric heating cord 5 which is in direct thermal contact with them.
  • This thermal diffusion effect is completed by the free circulation of the air contained in the heating body 1 through the channels 7.
  • the enclosure formed by the heating body 1 is open at its upper part and / or lower so as to promote convection and the free circulation of air in the channels 7.
  • the electric heating cord 5 can be very easily put in place and shaped on one of the sheets 10,11 by simple bonding and the addition of the second sheet of flexible material which is a good heat conductor also presents no particular difficulty in positioning.
  • the assembly of the assembly thus formed between the panels 3,4 no longer requires 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 assembly operation is thus greatly simplified.
  • the heating device according to the invention preferably comprises two sheets of aluminum coating the electric heating cord 5, but it is obvious that the use of a single sheet of flexible aluminum can be envisaged. In such a case, the single aluminum sheet is obviously placed opposite the front panel 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 unit 30 consists of a cover 32 as well as a support piece 31 intended to fix the additional block 30 against the heating body 1 by any appropriate means, and for example by screwing.
  • the cowling 32 is made up of a closed frame comprising an upper grid 34 and a front grid 33, located substantially perpendicular to the front panel 3 of the device. heating 1.
  • the additional unit 30 includes heating means 35 and a ventilation means 36.
  • the ventilation means 36 consists of a tangential turbine extending in the plane of extension of the device along an axis perpendicular to the axis xx 'in front of the front grid 33 which forms the ejection grid of the air flow.
  • the heating means 35 are preferably arranged between the upper grid 34 and the ventilation means 36, and include heat dissipating elements 35b with fins mounted axially on a resistive element preferably of armored type 35c in the shape of a U.
  • the ventilation means 36 sucks in ambient air 22, through the grid 34 and the heating means 35. The air thus heated is then ejected through the front grid 33.
  • the position of the grid 34 is advantageously chosen so that the ventilation means 36 draws in ambient air from the external face of the rear panel 4. Thus the thermal equilibrium of the heating body 1 is not disturbed by the start-up of the additional block 30.
  • a centrifugal turbine 36 ' is mounted at the rear of the front panel 3 and against the surface 4 'of the lower end of the rear panel 4.
  • the longitudinal dimension along the axis xx' of the rear panel 4 is reduced and the means of 35 'heaters consist of resistive filament elements.

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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)
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
FR9205543A FR2690807B1 (fr) 1992-04-29 1992-04-29 Dispositif de chauffage, notamment seche-serviette, a cordon electrique chauffant.
FR9205543 1992-04-29

Publications (2)

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

Family

ID=9429558

Family Applications (1)

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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004016143A1 (en) * 2002-08-15 2004-02-26 Karin Metalli Oy Dryer
EP3264004A1 (de) * 2016-06-27 2018-01-03 Lukas Jaworek Aufsatz zur wärmeabfuhr für einen heizkörper

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20114576U1 (de) 2001-09-04 2001-12-06 Kermi Gmbh, 94447 Plattling Heizkörpereinheit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1966975A1 (de) * 1969-06-11 1975-12-18 Schreiber Geb Becker Margareth Wand- oder fussbodenbelagplatte als vorgefertigte installationsplatte mit grundund deckplatte
DE3327893A1 (de) * 1983-08-02 1985-02-14 Joachim Dr.-Ing. 8070 Ingolstadt Hess Heizkoerper, insbesondere fuer kleine raeume
WO1990011002A1 (en) * 1989-03-10 1990-09-20 Lg Innovations Ab Arrangement for converting electrical energy to heat energy

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1966975A1 (de) * 1969-06-11 1975-12-18 Schreiber Geb Becker Margareth Wand- oder fussbodenbelagplatte als vorgefertigte installationsplatte mit grundund deckplatte
DE3327893A1 (de) * 1983-08-02 1985-02-14 Joachim Dr.-Ing. 8070 Ingolstadt Hess Heizkoerper, insbesondere fuer kleine raeume
WO1990011002A1 (en) * 1989-03-10 1990-09-20 Lg Innovations Ab Arrangement for converting electrical energy to heat energy

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004016143A1 (en) * 2002-08-15 2004-02-26 Karin Metalli Oy Dryer
EP3264004A1 (de) * 2016-06-27 2018-01-03 Lukas Jaworek Aufsatz zur wärmeabfuhr für einen heizkörper

Also Published As

Publication number Publication date
FR2690807B1 (fr) 1999-01-15
DE69316075T2 (de) 1998-06-04
DE69316075D1 (de) 1998-02-12
FR2690807A1 (fr) 1993-11-05
EP0568464B1 (de) 1998-01-07

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