EP3096094B1 - Household electrical heating appliance comprising at least one flat hollow bar in which an electric heating element is housed - Google Patents

Household electrical heating appliance comprising at least one flat hollow bar in which an electric heating element is housed Download PDF

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Publication number
EP3096094B1
EP3096094B1 EP16170699.9A EP16170699A EP3096094B1 EP 3096094 B1 EP3096094 B1 EP 3096094B1 EP 16170699 A EP16170699 A EP 16170699A EP 3096094 B1 EP3096094 B1 EP 3096094B1
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EP
European Patent Office
Prior art keywords
bar
cord
curved section
heating
appliance according
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.)
Active
Application number
EP16170699.9A
Other languages
German (de)
French (fr)
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EP3096094A1 (en
Inventor
Philippe Blouin
Raphaël VIENNET
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.)
Texas de France SAS
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Texas de France SAS
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Publication of EP3096094A1 publication Critical patent/EP3096094A1/en
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Publication of EP3096094B1 publication Critical patent/EP3096094B1/en
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/04—Waterproof or air-tight seals for heaters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/44—Heating elements having the shape of rods or tubes non-flexible heating conductor arranged within rods or tubes of insulating material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/54—Heating elements having the shape of rods or tubes flexible
    • H05B3/56—Heating cables
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/08—Electric heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/20—Heat consumers
    • F24D2220/2009—Radiators
    • F24D2220/2036—Electric radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/20—Heat consumers
    • F24D2220/2009—Radiators
    • F24D2220/2045—Radiators having horizontally extending tubes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/022—Heaters specially adapted for heating gaseous material

Definitions

  • the subject of the invention is a domestic electric heating appliance comprising at least one hollow bar in which is housed an electric heating element.
  • An electric towel rail generally comprises one or more hollow and flat drying bars arranged horizontally and fixed on one or two vertical uprights, each drying bar contains an electric heating element.
  • an electric towel dryer is for example described in the patents EP-1,381,255 (MULLER), EP-1.797.806 (CALTHERMIC), DE29802057U1 (DUSAR KUNSTOFF METAL) or CN201759459U (GENGBING).
  • the electric heating elements are of increasing interest due, in particular, to their rapid rise in temperature reducing the heating time and, therefore, the electrical consumption, and the thermal uniformity obtained, providing, in addition to optimal drying of the towels or other linen. , excellent thermal comfort felt by users.
  • the heating elements are independent and housed respectively inside the hollow bars, these elements being electrically connected to an electrical supply via a control and regulation unit (thermostat regulating the duration and / or the heating temperature) associated, for example, with one of the uprights.
  • a control and regulation unit thermostat regulating the duration and / or the heating temperature
  • towel dryers with flat drying bars must be fitted with double insulated heating elements.
  • heating elements comprising a bare resistive wire, wrapped around an insulating support sheet. Two other insulating sheets sandwich the resistive wire support sheet, covering it entirely to provide a first electrical insulation. The second electrical insulation is obtained by insulating parts or spacers between the metal body of the radiator and the two sheets of the heating core.
  • this heating element with double electrical insulation is not particularly suitable for flat and thin drying bars of dryers. -napkins. Indeed, due to a too large overall size, the heating element is difficult to lodge inside the hollow and flat bars. Furthermore, some models of electric towel dryers have curved flat drying bars, which requires heating elements having a certain flexibility to adapt to the curvature imposed by the drying bars. In addition, the electrical insulation of this type of heating element is no longer ensured when water or steam appears in the hollow bar.
  • the patent document WO2007 / 120004 (SOLCO BIOMEDICAL) describes a heating cord formed by rectilinear sections connected by curved sections. This cord is however used in a heating mattress. This patent document is silent as to the integration of such a heating cord inside a hollow and flat bar.
  • the object of the present invention is to remedy these drawbacks.
  • the invention aims to provide an electric heating device whose design allows to guarantee the electrical insulation of the heating element.
  • Another object of the invention is to allow easy mounting of the heating element inside a hollow and flat bar, despite the small thickness and / or the curvature of the latter.
  • An additional objective of the invention is to increase the life of the heating elements installed in the bars.
  • Yet another objective of the invention is to optimize the transmission of heat between the heating element and the bar.
  • the invention also aims to provide a towel dryer whose design is simple and quick assembly.
  • the solution proposed by the invention is a domestic electric heating device according to claim 1.
  • the figure 1 shows an example of a towel dryer 1 according to the invention.
  • This towel dryer 1 has a vertical upright 2 or mast, which acts for example as a wall support.
  • the upright 2 consists of a hollow profile, preferably made of a light alloy of the aluminum type, but which can be made of another rigid material such as a composite material. It has for example a width between 2 cm and 20 cm and a height between 50 cm and 250 cm.
  • Fixing means 20 ( Figures 3a and 3b ) allow the upright 2 to be hung on a wall such as a wall, a door or a wall shelf.
  • These fixing means 20 can be in the form of a rail adapted to receive one or more fixing lugs.
  • One or more flat drying bars 3 are fixed to the upright 2. These bars 3 are arranged horizontally and parallel to each other. A transverse end of the bars 3 is made integral with the upright 2 by any suitable fixing means such as fitting, welding, screwing, etc.
  • the bars 3 have, in the representation illustrated in the appended figures, a substantially rectangular, elongated, straight shape ( figures 1 to 4 ) or slightly curved ( figure 7 ), with a hollow and flat rectangular cross section.
  • the opposite and parallel side walls 30 of each bar 3 offer a large heating surface compared to bars of circular cross section.
  • the side walls 30 can be smooth or have elements in relief, of the fluting type for example, these elements in relief making it possible to increase the heat exchange surface.
  • Each bar 3 has two longitudinal edges 32a, 32b and two transverse edges 33. These edges 32a, 32b, 33 define with the side walls 30, an internal space forming a housing or cavity 31 for receiving and mounting the electric heating element. 4.
  • the bars 3 are preferably made of a heat conducting material, typically steel, cast iron, zinc alloy (Zamak) or aluminum. They could however be made of a non-metallic material of the polymer or composite type. For example, their length (distance between the transverse edges 33) varies from 15 cm to 1 m, their height (distance between the longitudinal edges 32a, 32b) varies from 5 cm to 20 cm, and their thickness (distance between the side walls 30) varies from 2 mm to 2 cm.
  • a heat conducting material typically steel, cast iron, zinc alloy (Zamak) or aluminum. They could however be made of a non-metallic material of the polymer or composite type.
  • their length (distance between the transverse edges 33) varies from 15 cm to 1 m
  • their height (distance between the longitudinal edges 32a, 32b) varies from 5 cm to 20 cm
  • their thickness (distance between the side walls 30) varies from 2 mm to 2 cm.
  • the bars 3 are preferably obtained by an extrusion process, and therefore each formed by an extruded profile.
  • the direction of the extrusion is parallel to the longitudinal edges 32a, 32b.
  • the bar 3 being extruded the transverse edges 33 are open. They are closed by removable caps 330 which can be made of a plastic material. In practice, these caps 330 come to fit into arrangements 3300 provided for this purpose in the bar 3 ( figures 8 to 10 ).
  • the bars 3 are arranged in several distinct groups, so that the spacing between these groups allows the installation of several towels.
  • the vertical upright 2 is, in turn, in rigid connection with all of the groups of bars 2.
  • control and regulation unit 6 - or thermostat - acting in particular on the duration and the operating power of the towel dryer 1 it is attached to the vertical upright 2, advantageously in the upper part of the latter, which facilitates its use by being located in height.
  • Each bar 3 contains a heating element 4.
  • the various heating elements 4 are connected to each other, preferably in series, and to the thermostat 6.
  • the electric cables 61 making it possible to supply the heating elements 4 pass through the internal cavity of the upright 2.
  • the heating element 4 is in the form of a flexible cord having a sheath with double electrical insulation.
  • the cord 4 comprises an electrical resistance surrounded by a flexible double sheath based on silicone.
  • This design makes it possible to satisfy the requirements of reduced overall dimensions imposed by the flat bars 3 and of the standards in force imposing double electrical insulation.
  • the cord 4 intrinsically having a double electrical insulation, the latter is preserved even if water or steam is introduced inside the bar 3. It is therefore not necessary to provide a particular seal at the level of the caps 330, which makes it possible to simplify the design and reduce the manufacturing costs.
  • the cord 4 is formed of two rectilinear heating sections 4a, 4b connected by a curved section 4c.
  • rectilinear is meant that the sections 4a and 4b extend in the length of the bar 3 while being parallel, or substantially parallel, to the longitudinal edges 32a, 32b.
  • the rectilinear sections 4a, 4b are connected, at one of their ends, to the curved section 4c, the connections being insulated and sealed by heat-shrinkable sheaths 40. Their other end is connected to an electrical supply cable 61 which allows the connection of the cord 4 to the other cords of the appliance 1 and / or to the thermostat 6.
  • the connections to the power supply cables 61 are also insulated and sealed by heat-shrinkable sheaths 40.
  • the cables 61 are non-heating cables.
  • orifices 610 are provided in the bar 3 to bring the cables 61 out of said bar.
  • the orifices 610 are situated at the level of the transverse edge 33 which is situated opposite the other transverse edge 33 where the curved section 4c is located.
  • the straight sections 4a, 4b extend over the entire length of said bar. Their length corresponds substantially to that of the bar 3.
  • substantially is meant that the length of the straight sections 4a, 4b is equal to or slightly less, for example a few millimeters or a few centimeters, than that of the bar 3.
  • the curved section 4c As for the curved section 4c, it extends in the height of the bar 3. Its length corresponds substantially to the height of the bar 3. By “substantially”, it is meant that the length of the curved section 4c is equal, slightly less, for example a few millimeters or a few centimeters, at the height of the bar 3. The length of the curved section 4c may however be greater than the height of the bar 3 insofar as said section is curved.
  • the rectilinear sections 4a, 4b are each formed by a flexible heating cord having a sheath with double electrical insulation of the type comprising an electrical resistance surrounded by a flexible double sheath based on silicone.
  • These cords have a circular section, and have a diameter - or thickness - by example between 4 mm and 10 mm, this thickness being less than that of the bar 3. They could have a square, rectangular oval, or other section.
  • the straight sections 4a, 4b are preferably identical to dissipate the same heating power, and have the same thickness. They could however have different thicknesses, so that they do not provide the same heating power.
  • the rectilinear section 4a which is situated at the level of the upper longitudinal edge 32a of the bar 3 can provide a heating power greater than that supplied by the rectilinear section 4b which is situated at the level of the lower longitudinal edge 32b.
  • a wet towel or cloth is intended to rest on the upper longitudinal edge 32a and there may be an advantage in further heating this edge and / or the area of the side walls 30 located near this edge.
  • the straight section 4a may have a thickness greater than the straight section 4b.
  • the curved section 4c is preferably in the form of a flexible non-heating electric cable.
  • This cable has a sheath with double electrical insulation to meet the requirements of the standards in force imposing double electrical insulation. It connects the straight sections 4a and 4b to each other.
  • This electric cable has a circular section, and has a diameter - or thickness - for example between 1 mm and 5 mm, this thickness being less than that of the bar 3. It could have a square, rectangular oval, or other section.
  • the curved section 4c is located at one of the transverse edges 33 of the bar 3. From a practical point of view, it is not necessary to heat this transverse edge 33 to dry a wet towel or cloth installed on the bar 3. Heating the side walls 30 is sufficient. The use of a non-heating curved section 4c therefore avoids unnecessarily heating this transverse edge 33 and the plug 330 which closes it.
  • the curved section 4c is in the form of a flexible heating cord having a sheath with double electrical insulation of the type comprising an electrical resistance surrounded by a flexible double sheath based on silicone.
  • This cord has a circular section, and has a diameter - or thickness - for example between 1 mm and 5 mm. It could have a square, rectangular oval, or other section.
  • the curved section 4c is in the form of a non-heating electric cable or a heating cord, its thickness - or diameter - is less than that of the straight sections 4a, 4b.
  • the cords 4 are preferably supplied with 24 volts or 230 volts. Their respective heating power is for example between 25 W and 2000 W. The heating is distributed in all the bars 3 and thus allows a good distribution, and therefore a better optimization, of the heating power of the towel dryer 1.
  • the bar 3 includes arrangements making it possible to each receive one of the straight sections 4a, 4b. Another arrangement is planned to receive the curved section 4c. As will now be described in more detail, these arrangements are arranged so that the assembly of the cord 4 is fully housed in the cavity 31 of the bar 3.
  • the bar 3 has two internal housings 31a, 31b. These housings are parallel to the longitudinal edges 32a, 32b and extend over the entire length of the bar 3. They can be located at the longitudinal edges 32a, 32b or more offset towards the middle of the side walls 30 as shown on the attached figures. They each receive one of the rectilinear heating sections 4a, 4b. These housings 31a, 31b have a rectangular or square section. Their height and width can be adjusted to the thickness of the straight sections 4a, 4b so that the latter are held tight in the housings 31a, 31b. This configuration has the advantage of keeping the straight sections 4a, 4b pressed against the internal wall of the bar 3, thus promoting the transfer of calories to the side walls 30.
  • the section of the housings 31a, 31b has dimensions greater than the thickness of the straight sections 4a, 4b. This makes it easier to set up the straight sections 4a, 4b which just have to be slid into their respective housings 31a, 31b.
  • the two internal housings 31a, 31b are separated by two parallel partitions 34a, 34b which define a central channel - or a channel - on either side of which the two said housings are located.
  • the partitions 34a, 34b are parallel to the longitudinal edges 32a, 32b and extend over the entire length of the bar 3. They are spaced from each other by a distance for example between 2 mm and 30 mm. They have a thickness which corresponds substantially to the thickness of the side walls 30. They are obtained during the extrusion of the profile forming the bar 3, the extrusion die being configured to conform the arrangements of the cavity 31.
  • the partitions 34a, 34b extend perpendicular to the direction of extrusion, that is to say perpendicular to the side walls 30. However, they do not extend throughout the entire thickness of the bar 3. In fact, they have each a top edge 340a, 340b which is distant from the internal wall of the bar 3.
  • the distance 'd' which separates the internal wall of the bar 3 from the top edges 340a, 340b, is greater than or equal to the thickness of the curved section 4c, but less than the respective thickness of each straight section 4a, 4b.
  • a distance 'of between 3 mm and 4 mm is compatible with a curved section 4c having a thickness of 2 mm to 3 mm, and rectilinear sections 4a, 4b having a thickness of 5 mm to 6 mm.
  • This geometry is particularly advantageous insofar as the straight sections 4a, 4b remain positioned in their respective housings 31a, 31b. Indeed, their thickness being greater than the distance 'd', the partitions 34a, 34b prevent them from leaving their housing 31a, 31b.
  • the two rectilinear sections 4a, 4b are thus constantly separated to avoid any zone of overheating which would cause premature aging of the cord 4.
  • the curved section 4c can be housed in the space between the internal wall of the bar 3 and the top edges 340a, 340b.
  • the stopper 330 keeps the curved section 4c in position in this space.
  • the whole bead 4, including the curved section 4c, can therefore be housed inside the bar 3.
  • a temperature probe 5, and / or a thermal circuit breaker can be housed in the central channel delimited by the two partitions 34a and 34b.
  • the temperature probe 5 and the thermal circuit breaker must be removed from the rectilinear heating sections 4a, 4b to be able to correctly measure the temperature of the bar 3. It is therefore advisable that they cannot leave the central channel. For this reason, provision is made for the thickness of the probe 5 and / or of the thermal circuit breaker to be greater than the distance 'd' above.
  • the central channel therefore has a dual function: it not only keeps the two rectilinear sections 4a and 4b apart, but also serves as a housing for any type of measuring device and / or safety device.
  • the two internal housings 31a, 31b are separated by a single partition 34.
  • the latter is similar to the partitions 34a, 34b described above and obtained during the extrusion of the profile forming the bar 3. It is parallel to the longitudinal edges 32a, 32b and extends over the entire length of the bar 3. It is located in the middle of the side walls 30 and has a thickness which corresponds substantially to the thickness of the latter.
  • the partition 34 extends perpendicular to the direction of extrusion of the bar 3, that is to say perpendicular to the side walls 30, without however extending throughout the entire thickness of said bar. It has in fact a top edge 340 which is distant from the internal wall of the bar 3.
  • the distance 'd' which separates the internal wall of the bar 3 from the top edge 340 is greater than or equal to the thickness of the curved section 4c, but less than the respective thickness of each straight section 4a, 4b.
  • a distance ′ of between 3 mm and 4 mm is compatible with a curved section 4c having a thickness of 2 mm to 3 mm, and straight sections 4a, 4b having a thickness of 5 mm to 6 mm.
  • the partition 34 prevents the straight sections 4a, 4b from coming out of their respective housing 31a, 31b, and allows the curved section 4c to be housed in the space between the internal wall of the bar 3 and the top edge 34, at one of the transverse edges 33. In this configuration with a single partition 34, the entire cord 4 can be entirely housed in the bar 3.
  • the heating sections 4a and 4b are in contact with the internal wall of the bar. 3, at least at one of the walls side 30, more particularly that which, in use, is not located opposite a wall or a support, but which faces the user (the side wall 30 which is visible on the figure 1 ). Also, when the section of the housings 31a, 31b has dimensions greater than the thickness of the straight sections 4a, 4b, provision is made for the latter to be each associated with a heat sink 7.
  • each sink 7 is made in two parts 7a and 7b designed in a heat conductive material of the type mentioned above with reference to the bar 3.
  • the two parts 7a and 7b can be made in the same material or in different materials so to favor the diffusion of calories towards one or the other of said parts, and in practice towards that which is in contact with the internal wall of the bar 3.
  • the first part 7a consists of an elongated part, for example obtained by molding, stamping or extrusion, and the length of which corresponds to that of the straight sections 4a, 4b. It is designed so that its external surface is in intimate contact with the internal wall of the bar 3 which is opposite one of the side walls 30 and has a profile coinciding with that of said internal wall.
  • the first part 7a comprises a flat surface whose width corresponds to that of the internal housings 31a, 31b. Its internal structure is adapted to receive a rectilinear section 4a, 4b.
  • a groove is for example provided for this purpose, which groove is formed over the entire length of the first part 7a and comprises a complementary section of the rectilinear section 4a, 4b. In this way, the internal surface of the groove is in continuous contact with the heating external surface of the rectilinear section 4a, 4b.
  • the second part 7b is designed to be assembled with the first part 7a.
  • the two parts 7a, 7b are fixed to each other by a removable connection of the obstacle connection type (eg clipping).
  • the second part 7b also consists of an elongated part obtained by molding, stamping or extrusion. Its length corresponds to that of the first part 7a and corresponds substantially to that of the bar 3.
  • the outer surface of the second part 7b can be in intimate contact with the internal wall of the bar 3 but this is not necessary for a satisfactory and acceptable transfer of calories to only one of the side walls 30 of said bar.
  • the internal structure of the second part 7b comprises a second longitudinal groove formed over the entire length of said second part.
  • the section of this groove is complementary to that of the straight section 4a, 4b.
  • the internal surface of the groove is in contact with the external heating surface of the rectilinear section 4a, 4b and makes it possible to cover the portion of said external surface left free by the first groove of the first part 7a.
  • the two grooves form a housing for the rectilinear section 4a, 4b, and cooperate so that the entire external heating surface of said sections is in continuous contact with the body of the dissipator 7.
  • the heatsinks 7 and their different parts 7a, 7b are preferably made of aluminum. This material gives them a certain malleability which allows them to be inserted manually into a curved bar 3. They take the curvature of the bar 3 which immobilizes them in their respective housing 31a, 31b and prevents the second part 7b from dissociating from the first part 7a.
  • This double heating core is easily inserted into the bar 3 by sliding each heating core 7 / 4a and 7 / 4b into its respective housing 31a, 31a from one of the transverse edges 33, until the curved section 4c either housed in said bar passing above the partitions 34, 34a, 34b.
  • the two cables 61 are then passed through the orifices 610 and then connected to the thermostat 6 which supplies them and / or to the other cables 61 of the other cords 4 of the towel dryer 1.
  • This connection is preferably made inside the upright 2, this the latter comprising orifices 210 situated opposite the orifices 610 when the bar 3 is fixed to said upright ( figure 2 ).
  • each rectilinear section 4a, 4b heating constitutes a heating heart.
  • the cord 4 therefore still forms a double heating core.
  • the installation of this double heating core in the bar 3 is identical to that described in the previous paragraph.
  • the invention which has just been described with reference to the towel dryer 1, and in particular the cord 4, applies to other types of domestic electric heating appliances such as fixed or mobile auxiliary radiators having heating bars, the cords 4 being inserted in these bars.

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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)
  • Resistance Heating (AREA)

Description

Domaine technique de l'invention.Technical field of the invention.

L'invention a pour objet un appareil de chauffage électrique domestique comportant au moins une barre creuse dans laquelle est logé un élément électrique chauffant.The subject of the invention is a domestic electric heating appliance comprising at least one hollow bar in which is housed an electric heating element.

Elle concerne le domaine technique des systèmes de chauffage électrique destinés à être installé dans une habitation ou des bureaux, et plus particulièrement, mais non exclusivement, le domaine technique des sèche-serviettes.It concerns the technical field of electric heating systems intended to be installed in a dwelling or offices, and more particularly, but not exclusively, the technical field of towel dryers.

État de la technique.State of the art.

Un sèche-serviettes électrique comporte généralement une ou plusieurs barres de séchage creuses et plates agencées horizontalement et fixées sur un ou deux montants verticaux, chaque barre de séchage renferme un élément électrique chauffant. Un tel sèche-serviettes électrique est par exemple décrit dans les brevets EP-1.381.255 (MULLER), EP-1.797.806 (CALTHERMIC), DE29802057U1 (DUSAR KUNSTOFF METAL) ou CN201759459U (GENGBING).An electric towel rail generally comprises one or more hollow and flat drying bars arranged horizontally and fixed on one or two vertical uprights, each drying bar contains an electric heating element. Such an electric towel dryer is for example described in the patents EP-1,381,255 (MULLER), EP-1.797.806 (CALTHERMIC), DE29802057U1 (DUSAR KUNSTOFF METAL) or CN201759459U (GENGBING).

Les éléments électriques chauffants présentent un intérêt croissant en raison, notamment, de leur montée rapide en température réduisant la durée de chauffe et, donc, la consommation électrique, et de l'homogénéité thermique obtenue procurant, outre un séchage optimal des serviettes ou autre linge, un excellent confort thermique ressenti par les utilisateurs.The electric heating elements are of increasing interest due, in particular, to their rapid rise in temperature reducing the heating time and, therefore, the electrical consumption, and the thermal uniformity obtained, providing, in addition to optimal drying of the towels or other linen. , excellent thermal comfort felt by users.

Les éléments chauffants, ou cœurs - ou corps - de chauffe, sont indépendants et logés respectivement à l'intérieur des barres creuses, ces éléments étant reliés électriquement à une alimentation électrique via un boîtier de commande et de régulation (thermostat réglant la durée et/ou la température de chauffe) associé, par exemple, à l'un des montants.The heating elements, or cores - or body - of heating, are independent and housed respectively inside the hollow bars, these elements being electrically connected to an electrical supply via a control and regulation unit (thermostat regulating the duration and / or the heating temperature) associated, for example, with one of the uprights.

Les normes en vigueur imposent de prévoir une double isolation électrique des éléments chauffants. Or, les barres métalliques plates, de section transversale rectangulaire, creuse, ne laissent qu'une faible distance (environ une dizaine de millimètres) entre leurs parois opposées, parallèles. Cette distance réduite ne permet donc pas d'obtenir une distance suffisante dans l'air pour une double isolation électrique des éléments chauffants.Current standards require double electrical insulation of the heating elements. However, the flat metal bars, of rectangular, hollow cross-section, leave only a small distance (about ten millimeters) between their opposite, parallel walls. This reduced distance therefore does not make it possible to obtain a sufficient distance in the air for double electrical insulation of the heating elements.

Aussi, les sèche-serviettes à barres de séchage plates, doivent être équipés d'éléments électriques chauffants à double isolation.Also, towel dryers with flat drying bars must be fitted with double insulated heating elements.

On connait par les brevets US-4 204 316 (ACRA ELECTRIC) ou US-3 808 573 (EMERSON ELECTRIC), des éléments chauffants comportant un fil résistif nu, enroulé autour d'une feuille de support isolante. Deux autres feuilles isolantes prennent en sandwich la feuille de support à fil résistif, en la recouvrant en totalité pour réaliser une première isolation électrique. La seconde isolation électrique est obtenue par des pièces ou entretoises isolantes entre le corps métallique du radiateur et les deux feuilles du cœur de chauffe.We know by patents US-4,204,316 (ACRA ELECTRIC) or US-3,808,573 (EMERSON ELECTRIC), heating elements comprising a bare resistive wire, wrapped around an insulating support sheet. Two other insulating sheets sandwich the resistive wire support sheet, covering it entirely to provide a first electrical insulation. The second electrical insulation is obtained by insulating parts or spacers between the metal body of the radiator and the two sheets of the heating core.

Bien que l'utilisation d'un fil résistif s'avère intéressante puisque celui-ci est peu coûteux et résiste à une forte température, cet élément chauffant à double isolation électrique n'est pas particulièrement adapté aux barres de séchage plates et minces des sèche-serviettes. En effet, en raison d'un encombrement global trop important, l'élément chauffant se loge difficilement à l'intérieur des barres creuses et plates. Par ailleurs, certains modèles de sèche-serviettes électriques, présentent des barres de séchage plates cintrées, ce qui nécessite d'avoir des éléments de chauffage ayant une certaine souplesse pour s'adapter à la courbure imposée par les barres de séchage. En outre, l'isolation électrique de ce type d'élément chauffant n'est plus assurée lorsque de l'eau ou de la vapeur d'eau apparait dans la barre creuse.Although the use of a resistive wire turns out to be interesting since it is inexpensive and withstands a high temperature, this heating element with double electrical insulation is not particularly suitable for flat and thin drying bars of dryers. -napkins. Indeed, due to a too large overall size, the heating element is difficult to lodge inside the hollow and flat bars. Furthermore, some models of electric towel dryers have curved flat drying bars, which requires heating elements having a certain flexibility to adapt to the curvature imposed by the drying bars. In addition, the electrical insulation of this type of heating element is no longer ensured when water or steam appears in the hollow bar.

Le document brevet WO2007/120004 (SOLCO BIOMEDICAL) décrit un cordon chauffant formé de tronçons rectilignes reliés par des tronçons courbes. Ce cordon est toutefois utilisé dans un matelas chauffant. Ce document brevet est muet quant à l'intégration d'un tel cordon chauffant à l'intérieur d'une barre creuse et plate.The patent document WO2007 / 120004 (SOLCO BIOMEDICAL) describes a heating cord formed by rectilinear sections connected by curved sections. This cord is however used in a heating mattress. This patent document is silent as to the integration of such a heating cord inside a hollow and flat bar.

La présente invention a pour but de remédier à ces inconvénients. En particulier, l'invention a pour objectif de proposer un appareil de chauffage électrique dont la conception permet de garantir l'isolation électrique de l'élément chauffant.The object of the present invention is to remedy these drawbacks. In particular, the invention aims to provide an electric heating device whose design allows to guarantee the electrical insulation of the heating element.

Un autre objectif de l'invention est de permettre un montage aisé de l'élément chauffant à l'intérieur d'une barre creuse et plate, et ce malgré la faible épaisseur et/ou la courbure de cette dernière.Another object of the invention is to allow easy mounting of the heating element inside a hollow and flat bar, despite the small thickness and / or the curvature of the latter.

Un objectif supplémentaire de l'invention est d'augmenter la durée de vie des éléments chauffants installés dans les barres.An additional objective of the invention is to increase the life of the heating elements installed in the bars.

Encore un autre objectif de l'invention est d'optimiser la transmission de la chaleur entre l'élément chauffant et la barre.Yet another objective of the invention is to optimize the transmission of heat between the heating element and the bar.

L'invention a également pour objectif de proposer un sèche-serviettes dont la conception est simple et l'assemblage rapide.The invention also aims to provide a towel dryer whose design is simple and quick assembly.

Divulgation de l'invention.Disclosure of invention.

La solution proposée par l'invention est un appareil de chauffage électrique domestique selon la revendication 1.The solution proposed by the invention is a domestic electric heating device according to claim 1.

L'utilisation d'un tel cordon chauffant garantit la double isolation électrique, même si de l'eau ou de la vapeur d'eau entre dans la barre. Elle permet également un montage aisé du cordon dans la barre, même si celle-ci est mince et/ou courbe.The use of such a heating cord guarantees double electrical insulation, even if water or steam enters the bar. It also allows easy mounting of the cord in the bar, even if it is thin and / or curved.

De plus, grâce d'une part à la configuration du cordon chauffant, et d'autre part aux aménagements prévus dans la barre, tous les tronçons du cordon sont intégralement logés à l'intérieur de la barre, ce qui a pour effet de localiser et concentrer la dissipation des calories uniquement dans la barre.In addition, thanks on the one hand to the configuration of the heating cord, and on the other hand to the arrangements provided in the bar, all the sections of the cord are entirely housed inside the bar, which has the effect of locating and concentrate the dissipation of calories only in the bar.

D'autres caractéristiques avantageuses de l'invention sont listées ci-dessous. Chacune de ces caractéristiques peut être considérée seule ou en combinaison avec les caractéristiques remarquables définies ci-dessus, et faire l'objet, le cas échéant, d'une ou plusieurs demandes de brevet divisionnaires :

  • Les deux logements internes sont séparés par deux cloisons parallèles présentant chacune une arête sommitale distante de la paroi interne de la barre ; les cloisons définissent un canal central de part et d'autre duquel sont situés les deux logements ; et la distance entre la paroi interne de la barre de l'arête sommitale des cloisons est supérieure ou égale à l'épaisseur du tronçon courbe et inférieure à l'épaisseur respective de chaque tronçon rectiligne de sorte que ledit tronçon courbe se loge dans l'espace séparant ladite paroi interne des arêtes sommitales, lesdites cloisons empêchant les tronçons rectilignes de quitter leur logement respectif.
  • Une sonde de température et/ou un disjoncteur thermique, peut être logée dans le canal central, l'épaisseur de la sonde et/ou du disjoncteur thermique étant supérieure à la distance entre la paroi interne de la barre et les arêtes sommitales des cloisons.
  • Les deux logements internes peuvent n'être séparés que par une unique cloison.
  • Avantageusement, le tronçon courbe est localisé au niveau d'un des bords transversaux de la barre, lequel bord transversal est obturé par un bouchon qui maintient en position ledit tronçon courbe dans ladite barre.
  • Les tronçons rectilignes du cordon peuvent être chacun associés à un dissipateur thermique, lesquels dissipateurs sont installés dans la barre de manière à être en contact intime avec la paroi interne de ladite barre.
  • La barre est préférentiellement formée par un profilé extrudé.
  • Préférentiellement, les tronçons rectilignes du cordon sont chacun formés par un cordonnet chauffant souple ayant une gaine à double isolation électrique, lesquels cordonnets sont connectés entre eux par un câble électrique souple non chauffant ayant une gaine à double isolation électrique et formant le tronçon courbe.
  • Dans une variante de réalisation, les tronçons rectilignes du cordon sont chacun formés par un cordonnet chauffant souple ayant une gaine à double isolation électrique, lesquels cordonnets sont connectés entre eux par un cordonnet chauffant souple ayant une gaine à double isolation électrique et formant le tronçon courbe.
  • Les tronçons rectilignes du cordon peuvent avoir la même épaisseur ou des épaisseurs différentes.
  • Le tronçon courbe du cordon est préférentiellement localisé au niveau d'un des bords transversaux de la barre ; et des orifices sont ménagés dans la barre au niveau du bord transversal qui est situé à l'opposé du bord transversal où est localisé le tronçon courbe, les tronçons rectilignes se terminant par des extrémités de connexion électrique sortant de ladite barre par lesdits orifices.
  • L'appareil est préférentiellement un sèche-serviettes électrique, les barres étant des barres de séchage.
Other advantageous features of the invention are listed below. Each of these characteristics can be considered alone or in combination with the remarkable characteristics defined above, and be the subject, if necessary, of one or more divisional patent applications:
  • The two internal housings are separated by two parallel partitions each having a top edge distant from the internal wall of the bar; the partitions define a central channel on either side of which the two housings are located; and the distance between the internal wall of the bar of the top edge of the partitions is greater than or equal to the thickness of the curved section and less than the respective thickness of each straight section so that said curved section is housed in the space separating said internal wall from the top edges, said partitions preventing the straight sections from leaving their respective housings.
  • A temperature probe and / or a thermal circuit breaker can be accommodated in the central channel, the thickness of the probe and / or the thermal circuit breaker being greater than the distance between the internal wall of the bar and the top edges of the partitions.
  • The two internal housings can only be separated by a single partition.
  • Advantageously, the curved section is located at one of the transverse edges of the bar, which transverse edge is closed by a plug which keeps said curved section in position in said bar.
  • The straight sections of the cord can each be associated with a heat sink, which heatsinks are installed in the bar so as to be in intimate contact with the internal wall of said bar.
  • The bar is preferably formed by an extruded profile.
  • Preferably, the straight sections of the cord are each formed by a flexible heating cord having a sheath with double electrical insulation, which cords are connected together by a flexible non-heating electrical cable having a sheath with double electrical insulation and forming the curved section.
  • In an alternative embodiment, the straight sections of the cord are each formed by a flexible heating cord having a sheath with double electrical insulation, which cords are connected to each other by a flexible heating cord having a sheath with double electrical insulation and forming the curved section .
  • The straight sections of the cord may have the same thickness or different thicknesses.
  • The curved section of the bead is preferably located at one of the transverse edges of the bar; and holes are provided in the bar at the level of the transverse edge which is situated opposite the transverse edge where the curved section is located, the rectilinear sections ending in electrical connection ends leaving said bar through said orifices.
  • The device is preferably an electric towel dryer, the bars being drying bars.

Description des figures.Description of the figures.

D'autres avantages et caractéristiques de l'invention apparaîtront mieux à la lecture de la description d'un mode de réalisation préféré qui va suivre, en référence aux dessins annexés, réalisés à titre d'exemples indicatifs et non limitatifs et sur lesquels :

  • la figure 1 est une vue de face d'un sèche-serviettes conforme à l'invention,
  • la figure 2 est une vue schématique en coupe longitudinale d'une barre selon l'invention,
  • la figure 3a est une vue schématique en coupe selon A-A de la barre de la figure 2, ladite barre étant associée à un montant du sèche-serviettes,
  • la figure 3b est une vue agrandie partielle de la figure 3a montrant en détail la liaison entre la barre et le montant,
  • la figure 4 est une vue éclatée montrant les différents éléments constitutifs d'une barre conforme à l'invention,
  • la figure 5 est une vue en perspective d'un cordon chauffant conforme à l'invention,
  • la figure 6 montre le cordon chauffant de la figure 5, chaque tronçon rectiligne étant associé à un dissipateur thermique,
  • la figure 7 est une vue en perspective d'une barre courbe conforme à l'invention,
  • la figure 8 est une vue agrandie de la coupe selon B-B de la barre de la figure 2,
  • la figure 9 est une vue agrandie de la coupe selon B-B de la barre de la figure 2, dans une variante de réalisation,
  • la figure 10 est une vue agrandie de la coupe selon B-B de la barre de la figure 2, dans une autre variante de réalisation.
Other advantages and characteristics of the invention will appear better on reading the description of a preferred embodiment which will follow, with reference to the appended drawings, produced by way of indicative and nonlimiting examples and in which:
  • the figure 1 is a front view of a towel dryer according to the invention,
  • the figure 2 is a schematic view in longitudinal section of a bar according to the invention,
  • the figure 3a is a schematic sectional view along AA of the bar of the figure 2 , said bar being associated with an amount of the towel dryer,
  • the figure 3b is a partial enlarged view of the figure 3a showing in detail the connection between the bar and the upright,
  • the figure 4 is an exploded view showing the various constituent elements of a bar according to the invention,
  • the figure 5 is a perspective view of a heating cord according to the invention,
  • the figure 6 shows the heating cord of the figure 5 , each straight section being associated with a heat sink,
  • the figure 7 is a perspective view of a curved bar according to the invention,
  • the figure 8 is an enlarged view of the section along BB of the bar of the figure 2 ,
  • the figure 9 is an enlarged view of the section along BB of the bar of the figure 2 , in an alternative embodiment,
  • the figure 10 is an enlarged view of the section along BB of the bar of the figure 2 , in another alternative embodiment.

Modes préférés de réalisation de l'invention.Preferred embodiments of the invention.

La figure 1 montre un exemple de sèche-serviettes 1 conforme à l'invention. Ce sèche-serviettes 1 comporte un montant vertical 2 ou mât, qui fait par exemple office de support mural. Sur les figures 3a et 3b, le montant 2 est constitué d'un profilé creux, préférentiellement fabriqué dans un alliage léger du type aluminium, mais pouvant être réalisé dans un autre matériau rigide tel qu'un matériau composite. Il a par exemple une largeur comprise entre 2 cm et 20 cm et une hauteur comprise entre 50 cm et 250 cm. Des moyens de fixation 20 (figures 3a et 3b) permettent d'accrocher le montant 2 sur une paroi comme par exemple un mur, une porte ou encore une étagère murale. Ces moyens de fixation 20 peuvent se présenter sous la forme d'un rail adapté pour recevoir une ou plusieurs pattes de fixation.The figure 1 shows an example of a towel dryer 1 according to the invention. This towel dryer 1 has a vertical upright 2 or mast, which acts for example as a wall support. On the Figures 3a and 3b , the upright 2 consists of a hollow profile, preferably made of a light alloy of the aluminum type, but which can be made of another rigid material such as a composite material. It has for example a width between 2 cm and 20 cm and a height between 50 cm and 250 cm. Fixing means 20 ( Figures 3a and 3b ) allow the upright 2 to be hung on a wall such as a wall, a door or a wall shelf. These fixing means 20 can be in the form of a rail adapted to receive one or more fixing lugs.

Une ou plusieurs barres de séchage 3 plates sont fixées sur le montant 2. Ces barres 3 sont disposées horizontalement et parallèlement les unes aux autres. Une extrémité transversale des barres 3 est rendue solidaire du montant 2 par tout moyen de fixation approprié tel qu'emboîtement, soudage, vissage, etc.One or more flat drying bars 3 are fixed to the upright 2. These bars 3 are arranged horizontally and parallel to each other. A transverse end of the bars 3 is made integral with the upright 2 by any suitable fixing means such as fitting, welding, screwing, etc.

Les barres 3 ont, dans la représentation illustrée sur les figures annexées, une forme sensiblement rectangulaire, allongée, droite (figures 1 à 4) ou légèrement cintrée (figure 7), avec une section transversale rectangulaire creuse et aplatie. Ainsi, les parois latérales opposées et parallèles 30 de chaque barre 3 offrent une surface de chauffe importante comparativement à des barreaux de section transversale circulaire.The bars 3 have, in the representation illustrated in the appended figures, a substantially rectangular, elongated, straight shape ( figures 1 to 4 ) or slightly curved ( figure 7 ), with a hollow and flat rectangular cross section. Thus, the opposite and parallel side walls 30 of each bar 3 offer a large heating surface compared to bars of circular cross section.

Les parois latérales 30 peuvent être lisses ou présenter des éléments en relief, de type cannelures par exemple, ces éléments en relief permettant d'augmenter la surface d'échange thermique.The side walls 30 can be smooth or have elements in relief, of the fluting type for example, these elements in relief making it possible to increase the heat exchange surface.

Chaque barre 3 présente deux bords longitudinaux 32a, 32b et deux bords transversaux 33. Ces bords 32a, 32b, 33 délimitent avec les parois latérales 30, un espace interne formant logement ou cavité 31 pour la réception et le montage de l'élément électrique chauffant 4.Each bar 3 has two longitudinal edges 32a, 32b and two transverse edges 33. These edges 32a, 32b, 33 define with the side walls 30, an internal space forming a housing or cavity 31 for receiving and mounting the electric heating element. 4.

Les barres 3 sont préférentiellement réalisées dans un matériau conducteur de chaleur, typiquement en acier, en fonte, en alliage de zinc (Zamak) ou en aluminium. Elles pourraient toutefois être réalisées dans un matériau non métallique du type polymère ou composite. A titre d'exemple, leur longueur (distance entre les bords transversaux 33) varie de 15 cm à 1 m, leur hauteur (distance entre les bords longitudinaux 32a, 32b) varie de 5 cm à 20 cm, et leur épaisseur (distance entre les parois latérales 30) varie de 2 mm à 2 cm.The bars 3 are preferably made of a heat conducting material, typically steel, cast iron, zinc alloy (Zamak) or aluminum. They could however be made of a non-metallic material of the polymer or composite type. For example, their length (distance between the transverse edges 33) varies from 15 cm to 1 m, their height (distance between the longitudinal edges 32a, 32b) varies from 5 cm to 20 cm, and their thickness (distance between the side walls 30) varies from 2 mm to 2 cm.

Les barres 3 sont préférentiellement obtenues par un procédé d'extrusion, et donc chacune formée par un profilé extrudé. Le sens de l'extrusion est parallèle aux bords longitudinaux 32a, 32b. La barre 3 étant extrudée, les bords transversaux 33 sont ouverts. Ils sont obturés par des bouchons amovibles 330 qui peuvent être réalisés dans un matériau plastique. En pratique, ces bouchons 330 viennent s'emboîter dans des aménagements 3300 prévus à cet effet dans la barre 3 (figures 8 à 10).The bars 3 are preferably obtained by an extrusion process, and therefore each formed by an extruded profile. The direction of the extrusion is parallel to the longitudinal edges 32a, 32b. The bar 3 being extruded, the transverse edges 33 are open. They are closed by removable caps 330 which can be made of a plastic material. In practice, these caps 330 come to fit into arrangements 3300 provided for this purpose in the bar 3 ( figures 8 to 10 ).

Dans l'exemple illustré sur la figure 1, les barres 3 sont agencées en plusieurs groupes distincts, de sorte que l'écartement entre ces groupes permet la mise en place de plusieurs serviettes. En revanche, le montant vertical 2 est, quant à lui, en liaison rigide avec l'ensemble des groupes de barres 2.In the example illustrated on the figure 1 , the bars 3 are arranged in several distinct groups, so that the spacing between these groups allows the installation of several towels. On the other hand, the vertical upright 2 is, in turn, in rigid connection with all of the groups of bars 2.

En ce qui concerne le bloc de commande et de régulation 6 - ou thermostat - agissant notamment sur la durée et la puissance de fonctionnement du sèche-serviettes 1, il est rapporté sur le montant vertical 2, avantageusement dans la partie supérieure de ce dernier, ce qui facilite son utilisation en étant situé en hauteur.As regards the control and regulation unit 6 - or thermostat - acting in particular on the duration and the operating power of the towel dryer 1, it is attached to the vertical upright 2, advantageously in the upper part of the latter, which facilitates its use by being located in height.

Chaque barre 3 renferme un élément chauffant 4. Comme cela apparait sur la figure 1, les différents éléments chauffants 4 sont connectés entre eux, préférentiellement en série, et au thermostat 6. Les câbles électriques 61 permettant d'alimenter les éléments chauffants 4 passent dans la cavité interne du montant 2.Each bar 3 contains a heating element 4. As it appears on the figure 1 , the various heating elements 4 are connected to each other, preferably in series, and to the thermostat 6. The electric cables 61 making it possible to supply the heating elements 4 pass through the internal cavity of the upright 2.

Comme cela apparait sur la figure 5, l'élément chauffant 4 se présente sous la forme d'un cordon souple ayant une gaine à double isolation électrique. En pratique, le cordon 4 comprend une résistance électrique entourée d'une double gaine souple à base de silicone. Cette conception permet de satisfaire les exigences d'encombrement réduit imposées par les barres plates 3 et des normes en vigueur imposant une double isolation électrique. En outre, le cordon 4 présentant intrinsèquement une double isolation électrique, cette dernière est conservée même si de l'eau ou de la vapeur d'eau est introduite à l'intérieur de la barre 3. Il n'est donc pas utile de prévoir une étanchéité particulière au niveau des bouchons 330, ce qui permet de simplifier la conception et de diminuer les coûts de fabrication.As it appears on the figure 5 , the heating element 4 is in the form of a flexible cord having a sheath with double electrical insulation. In practice, the cord 4 comprises an electrical resistance surrounded by a flexible double sheath based on silicone. This design makes it possible to satisfy the requirements of reduced overall dimensions imposed by the flat bars 3 and of the standards in force imposing double electrical insulation. In addition, the cord 4 intrinsically having a double electrical insulation, the latter is preserved even if water or steam is introduced inside the bar 3. It is therefore not necessary to provide a particular seal at the level of the caps 330, which makes it possible to simplify the design and reduce the manufacturing costs.

Le cordon 4 est formé de deux tronçons rectilignes chauffant 4a, 4b reliés par un tronçon courbe 4c. Par « rectilignes », on entend que les tronçons 4a et 4b s'étendent dans la longueur de la barre 3 en étant parallèles, ou sensiblement parallèles, aux bords longitudinaux 32a, 32b. Lorsque le cordon 4 est installé dans la barre 3, il prend la forme d'un U.The cord 4 is formed of two rectilinear heating sections 4a, 4b connected by a curved section 4c. By "rectilinear" is meant that the sections 4a and 4b extend in the length of the bar 3 while being parallel, or substantially parallel, to the longitudinal edges 32a, 32b. When the cord 4 is installed in the bar 3, it takes the form of a U.

Les tronçons rectilignes 4a, 4b sont connectés, au niveau d'une de leurs extrémités, au tronçon courbe 4c, les raccordements étant isolés et étanchéifiés par des gaines thermorétractables 40. Leur autre extrémité est connectée à un câble d'alimentation électrique 61 qui permet le raccordement du cordon 4 aux autres cordons de l'appareil 1 et/ou au thermostat 6. Les raccordements aux câbles d'alimentation électrique 61 sont également isolés et étanchéifiés par des gaines thermorétractables 40. Les câbles 61 sont des câbles non chauffant.The rectilinear sections 4a, 4b are connected, at one of their ends, to the curved section 4c, the connections being insulated and sealed by heat-shrinkable sheaths 40. Their other end is connected to an electrical supply cable 61 which allows the connection of the cord 4 to the other cords of the appliance 1 and / or to the thermostat 6. The connections to the power supply cables 61 are also insulated and sealed by heat-shrinkable sheaths 40. The cables 61 are non-heating cables.

Comme cela apparaît sur les figures 3b, 4 et 7, des orifices 610 sont ménagés dans la barre 3 pour faire sortir les câbles 61 hors de ladite barre. Les orifices 610 sont situés au niveau du bord transversal 33 qui est situé à l'opposé de l'autre bord transversal 33 où est localisé le tronçon courbe 4c.As it appears on the figures 3b , 4 and 7 , orifices 610 are provided in the bar 3 to bring the cables 61 out of said bar. The orifices 610 are situated at the level of the transverse edge 33 which is situated opposite the other transverse edge 33 where the curved section 4c is located.

Sur les figures 2, 3a et 4, une fois que le cordon 4 est installé dans la barre 3, les tronçons rectilignes 4a, 4b s'étendent sur toute la longueur de ladite barre. Leur longueur correspond sensiblement à celle de la barre 3. Par « sensiblement », on entend que la longueur des tronçons rectilignes 4a, 4b est égale ou légèrement inférieure, par exemple de quelques millimètres ou quelques centimètres, à celle de la barre 3.On the figures 2, 3a and 4 , once the cord 4 is installed in the bar 3, the straight sections 4a, 4b extend over the entire length of said bar. Their length corresponds substantially to that of the bar 3. By "substantially" is meant that the length of the straight sections 4a, 4b is equal to or slightly less, for example a few millimeters or a few centimeters, than that of the bar 3.

Le tronçon courbe 4c s'étend quant à lui dans la hauteur de la barre 3. Sa longueur correspond sensiblement à la hauteur de la barre 3. Par « sensiblement », on entend que la longueur du tronçon courbe 4c est égale, légèrement inférieure, par exemple de quelques millimètres ou quelques centimètres, à la hauteur de la barre 3. La longueur du tronçon courbe 4c peut toutefois être supérieure à la hauteur de la barre 3 dans la mesure où ledit tronçon est courbé.As for the curved section 4c, it extends in the height of the bar 3. Its length corresponds substantially to the height of the bar 3. By “substantially”, it is meant that the length of the curved section 4c is equal, slightly less, for example a few millimeters or a few centimeters, at the height of the bar 3. The length of the curved section 4c may however be greater than the height of the bar 3 insofar as said section is curved.

Les tronçons rectilignes 4a, 4b sont chacun formés par un cordonnet chauffant souple ayant une gaine à double isolation électrique du type comprenant une résistance électrique entourée d'une double gaine souple à base de silicone. Ces cordonnets ont une section circulaire, et ont un diamètre - ou épaisseur - par exemple compris entre 4 mm et 10 mm, cette épaisseur étant inférieure à celle de la barre 3. Ils pourraient avoir une section carrée, rectangulaire ovale, ou autre.The rectilinear sections 4a, 4b are each formed by a flexible heating cord having a sheath with double electrical insulation of the type comprising an electrical resistance surrounded by a flexible double sheath based on silicone. These cords have a circular section, and have a diameter - or thickness - by example between 4 mm and 10 mm, this thickness being less than that of the bar 3. They could have a square, rectangular oval, or other section.

Les tronçons rectilignes 4a, 4b sont préférentiellement identiques pour dissiper la même puissance de chauffage, et ont la même épaisseur. Ils pourraient toutefois avoir des épaisseurs différentes, de sorte qu'ils ne fournissent pas la même puissance de chauffage. Par exemple, le tronçon rectiligne 4a qui est situé au niveau du bord longitudinal supérieur 32a de la barre 3, peut fournir une puissance de chauffage supérieure à celle fournie par le tronçon rectiligne 4b qui est situé au niveau du bord longitudinal inférieur 32b. En effet, en usage, une serviette ou un linge mouillé est destiné à reposer sur le bord longitudinal supérieur 32a et il peut y avoir un avantage à chauffer davantage ce bord et/ou la zone des parois latérales 30 située près de ce bord. De fait, le tronçon rectiligne 4a peut avoir une épaisseur supérieure au tronçon rectiligne 4b.The straight sections 4a, 4b are preferably identical to dissipate the same heating power, and have the same thickness. They could however have different thicknesses, so that they do not provide the same heating power. For example, the rectilinear section 4a which is situated at the level of the upper longitudinal edge 32a of the bar 3, can provide a heating power greater than that supplied by the rectilinear section 4b which is situated at the level of the lower longitudinal edge 32b. Indeed, in use, a wet towel or cloth is intended to rest on the upper longitudinal edge 32a and there may be an advantage in further heating this edge and / or the area of the side walls 30 located near this edge. In fact, the straight section 4a may have a thickness greater than the straight section 4b.

Le tronçon courbe 4c se présente préférentiellement sous la forme d'un câble électrique souple non chauffant. Ce câble présente une gaine à double isolation électrique pour satisfaire les exigences des normes en vigueur imposant une double isolation électrique. Il permet de connecter entre eux les tronçons rectilignes 4a et 4b. Ce câble électrique a une section circulaire, et a un diamètre - ou épaisseur - par exemple compris entre 1 mm et 5 mm, cette épaisseur étant inférieure à celle de la barre 3. Il pourrait avoir une section carrée, rectangulaire ovale, ou autre.The curved section 4c is preferably in the form of a flexible non-heating electric cable. This cable has a sheath with double electrical insulation to meet the requirements of the standards in force imposing double electrical insulation. It connects the straight sections 4a and 4b to each other. This electric cable has a circular section, and has a diameter - or thickness - for example between 1 mm and 5 mm, this thickness being less than that of the bar 3. It could have a square, rectangular oval, or other section.

Comme cela apparaît sur les figures annexées, le tronçon courbe 4c est localisé au niveau d'un des bords transversaux 33 de la barre 3. D'un point de vue pratique, il n'est pas nécessaire de chauffer ce bord transversal 33 pour sécher une serviette ou un linge mouillé installé sur la barre 3. Le chauffage des parois latérales 30 suffit. L'utilisation d'un tronçon courbe 4c non chauffant évite donc de chauffer inutilement ce bord transversal 33 et le bouchon 330 qui l'obture.As shown in the appended figures, the curved section 4c is located at one of the transverse edges 33 of the bar 3. From a practical point of view, it is not necessary to heat this transverse edge 33 to dry a wet towel or cloth installed on the bar 3. Heating the side walls 30 is sufficient. The use of a non-heating curved section 4c therefore avoids unnecessarily heating this transverse edge 33 and the plug 330 which closes it.

Toutefois, si cela était utile, on pourrait envisager d'utiliser un tronçon courbe 4c chauffant pour dissiper des calories au niveau du bord transversal 33. Dans ce cas, le tronçon courbe 4c se présente sous la forme d'un cordonnet chauffant souple ayant une gaine à double isolation électrique du type comprenant une résistance électrique entourée d'une double gaine souple à base de silicone. Ce cordonnet a une section circulaire, et a un diamètre - ou épaisseur - par exemple compris entre 1 mm et 5 mm. Il pourrait avoir une section carrée, rectangulaire ovale, ou autre.However, if this were useful, one could consider using a curved heating section 4c to dissipate calories at the transverse edge 33. In this case, the curved section 4c is in the form of a flexible heating cord having a sheath with double electrical insulation of the type comprising an electrical resistance surrounded by a flexible double sheath based on silicone. This cord has a circular section, and has a diameter - or thickness - for example between 1 mm and 5 mm. It could have a square, rectangular oval, or other section.

Que le tronçon courbe 4c se présente sous la forme d'un câble électrique non chauffant ou d'un cordonnet chauffant, son épaisseur -ou diamètre- est inférieure à celles des tronçons rectilignes 4a, 4b.Whether the curved section 4c is in the form of a non-heating electric cable or a heating cord, its thickness - or diameter - is less than that of the straight sections 4a, 4b.

Les cordons 4 sont préférentiellement alimentés en 24 Volts ou 230 Volts. Leur puissance de chauffe respective est par exemple comprise entre 25 W et 2000 W. Le chauffage se répartit dans toutes les barres 3 et permet ainsi une bonne distribution, et donc une meilleure optimisation, de la puissance de chauffage du sèche-serviette 1.The cords 4 are preferably supplied with 24 volts or 230 volts. Their respective heating power is for example between 25 W and 2000 W. The heating is distributed in all the bars 3 and thus allows a good distribution, and therefore a better optimization, of the heating power of the towel dryer 1.

La barre 3 comporte des aménagements permettant de recevoir chacun un des tronçons rectilignes 4a, 4b. Un autre aménagement est prévu pour recevoir le tronçon courbe 4c. Comme cela va maintenant être décrit plus en détail, ces aménagements sont agencés de sorte que l'ensemble du cordon 4 soit intégralement logé dans la cavité 31 de la barre 3.The bar 3 includes arrangements making it possible to each receive one of the straight sections 4a, 4b. Another arrangement is planned to receive the curved section 4c. As will now be described in more detail, these arrangements are arranged so that the assembly of the cord 4 is fully housed in the cavity 31 of the bar 3.

Sur la figure 8, la barre 3 comporte deux logements internes 31a, 31b. Ces logements sont parallèles aux bords longitudinaux 32a, 32b et s'étendent sur toute la longueur de la barre 3. Ils peuvent être situés au niveau des bords longitudinaux 32a, 32b ou davantage décalés vers le milieu des parois latérales 30 comme cela apparaît sur les figures annexées. Ils reçoivent chacun un des tronçons rectilignes chauffant 4a, 4b. Ces logements 31a, 31b ont une section rectangulaire ou carrée. Leur hauteur et largeur peuvent être ajustées à l'épaisseur des tronçons rectilignes 4a, 4b de sorte que ces derniers soient maintenus serrés dans les logements 31a, 31b. Cette configuration présente l'avantage de maintenir les tronçons rectilignes 4a, 4b plaqués contre la paroi interne de la barre 3, favorisant ainsi le transfert des calories vers les parois latérales 30.On the figure 8 , the bar 3 has two internal housings 31a, 31b. These housings are parallel to the longitudinal edges 32a, 32b and extend over the entire length of the bar 3. They can be located at the longitudinal edges 32a, 32b or more offset towards the middle of the side walls 30 as shown on the attached figures. They each receive one of the rectilinear heating sections 4a, 4b. These housings 31a, 31b have a rectangular or square section. Their height and width can be adjusted to the thickness of the straight sections 4a, 4b so that the latter are held tight in the housings 31a, 31b. This configuration has the advantage of keeping the straight sections 4a, 4b pressed against the internal wall of the bar 3, thus promoting the transfer of calories to the side walls 30.

Sur la figure 8, la section des logements 31a, 31b a des dimensions supérieures à l'épaisseur des tronçons rectilignes 4a, 4b. Cela permet de faciliter la mise en place des tronçons rectilignes 4a, 4b qui ont juste à être glissés dans leur logement respectif 31a, 31b.On the figure 8 , the section of the housings 31a, 31b has dimensions greater than the thickness of the straight sections 4a, 4b. This makes it easier to set up the straight sections 4a, 4b which just have to be slid into their respective housings 31a, 31b.

Les deux logements internes 31a, 31b sont séparés par deux cloisons parallèles 34a, 34b qui définissent un canal central - ou une rigole - de part et d'autre duquel sont situés les deux dits logements. Les cloisons 34a, 34b sont parallèles aux bords longitudinaux 32a, 32b et s'étendent sur toute la longueur de la barre 3. Elles sont écartées l'une de l'autre d'une distance par exemple comprise entre 2 mm et 30 mm. Elles ont une épaisseur qui correspond sensiblement à l'épaisseur des parois latérales 30. Elles sont obtenues lors de l'extrusion du profilé formant la barre 3, la filière d'extrusion étant configurée pour conformer les aménagements de la cavité 31.The two internal housings 31a, 31b are separated by two parallel partitions 34a, 34b which define a central channel - or a channel - on either side of which the two said housings are located. The partitions 34a, 34b are parallel to the longitudinal edges 32a, 32b and extend over the entire length of the bar 3. They are spaced from each other by a distance for example between 2 mm and 30 mm. They have a thickness which corresponds substantially to the thickness of the side walls 30. They are obtained during the extrusion of the profile forming the bar 3, the extrusion die being configured to conform the arrangements of the cavity 31.

Les cloisons 34a, 34b s'étendent perpendiculairement au sens d'extrusion, c'est-à-dire perpendiculairement aux parois latérales 30. Elles ne s'étendent toutefois pas dans toute l'épaisseur de la barre 3. En effet, elles présentent chacune une arête sommitale 340a, 340b qui est distante de la paroi interne de la barre 3.The partitions 34a, 34b extend perpendicular to the direction of extrusion, that is to say perpendicular to the side walls 30. However, they do not extend throughout the entire thickness of the bar 3. In fact, they have each a top edge 340a, 340b which is distant from the internal wall of the bar 3.

La distance 'd' qui sépare la paroi interne de la barre 3 des arêtes sommitales 340a, 340b, est supérieure ou égale à l'épaisseur de tronçon courbe 4c, mais inférieure à l'épaisseur respective de chaque tronçon rectiligne 4a, 4b. Par exemple, une distance 'd' comprise entre 3 mm et 4 mm est compatible avec un tronçon courbe 4c ayant une épaisseur de 2 mm à 3 mm, et des tronçons rectilignes 4a, 4b ayant une épaisseur de 5 mm à 6 mm.The distance 'd' which separates the internal wall of the bar 3 from the top edges 340a, 340b, is greater than or equal to the thickness of the curved section 4c, but less than the respective thickness of each straight section 4a, 4b. For example, a distance 'of between 3 mm and 4 mm is compatible with a curved section 4c having a thickness of 2 mm to 3 mm, and rectilinear sections 4a, 4b having a thickness of 5 mm to 6 mm.

Cette géométrie est particulièrement avantageuse dans la mesure où les tronçons rectilignes 4a, 4b restent positionnés dans leur logement respectif 31a, 31b. En effet, leur épaisseur étant supérieure à la distance 'd', les cloisons 34a, 34b les empêchent de sortir de leur logement 31a, 31b. Les deux tronçons rectilignes 4a, 4b sont ainsi constamment séparés pour éviter toute zone de surchauffe qui provoquerait un vieillissement prématuré du cordon 4.This geometry is particularly advantageous insofar as the straight sections 4a, 4b remain positioned in their respective housings 31a, 31b. Indeed, their thickness being greater than the distance 'd', the partitions 34a, 34b prevent them from leaving their housing 31a, 31b. The two rectilinear sections 4a, 4b are thus constantly separated to avoid any zone of overheating which would cause premature aging of the cord 4.

En outre, le tronçon courbe 4c peut venir se loger dans l'espace situé entre la paroi interne de la barre 3 et les arêtes sommitales 340a, 340b. Le bouchon 330 permet de maintenir en position le tronçon courbe 4c dans cet espace.In addition, the curved section 4c can be housed in the space between the internal wall of the bar 3 and the top edges 340a, 340b. The stopper 330 keeps the curved section 4c in position in this space.

Tout le cordon 4, y compris le tronçon courbe 4c, peut donc se loger à l'intérieur de la barre 3. Cela est particulièrement avantageux dans la mesure où le bord transversal 33 de la barre 3 où est localisé le tronçon courbe 4c peut être facilement obturé par un bouchon 330 et laissé libre, sans qu'il soit nécessaire de le fixer à un deuxième montant vertical pour loger une partie du cordon 4 qui sortirait hors de ce bord transversal 33.The whole bead 4, including the curved section 4c, can therefore be housed inside the bar 3. This is particularly advantageous insofar as the transverse edge 33 of the bar 3 where the curved section 4c is located easily closed by a plug 330 and left free, without it being necessary to fix it to a second vertical upright to accommodate a part of the cord 4 which would come out of this transverse edge 33.

Une sonde de température 5, et/ou un disjoncteur thermique, peut être logée dans le canal central délimité par les deux cloisons 34a et 34b. La sonde de température 5 et le disjoncteur thermique doivent être éloignés des tronçons rectilignes chauffant 4a, 4b pour pouvoir mesurer correctement la température de la barre 3. Il convient donc qu'ils ne puissent pas quitter le canal central. Pour cette raison, on prévoit que l'épaisseur de la sonde 5 et/ou du disjoncteur thermique soit supérieure à la distance 'd' précitée. Le canal central a donc une double fonction : il permet non seulement de maintenir distants les deux tronçons rectilignes 4a et 4b, mais sert également de logement à tout type d'appareil de mesure et/ou dispositif de sécurité.A temperature probe 5, and / or a thermal circuit breaker, can be housed in the central channel delimited by the two partitions 34a and 34b. The temperature probe 5 and the thermal circuit breaker must be removed from the rectilinear heating sections 4a, 4b to be able to correctly measure the temperature of the bar 3. It is therefore advisable that they cannot leave the central channel. For this reason, provision is made for the thickness of the probe 5 and / or of the thermal circuit breaker to be greater than the distance 'd' above. The central channel therefore has a dual function: it not only keeps the two rectilinear sections 4a and 4b apart, but also serves as a housing for any type of measuring device and / or safety device.

Dans le mode de réalisation de la figure 9, les deux logements internes 31a, 31b, sont séparés par une unique cloison 34. Cette dernière est similaire aux cloisons 34a, 34b décrites précédemment et obtenue lors de l'extrusion du profilé formant la barre 3. Elle est parallèle aux bords longitudinaux 32a, 32b et s'étend sur toute la longueur de la barre 3. Elle est située au milieu des parois latérales 30 et a une épaisseur qui correspond sensiblement à l'épaisseur de ces dernières.In the embodiment of the figure 9 , the two internal housings 31a, 31b are separated by a single partition 34. The latter is similar to the partitions 34a, 34b described above and obtained during the extrusion of the profile forming the bar 3. It is parallel to the longitudinal edges 32a, 32b and extends over the entire length of the bar 3. It is located in the middle of the side walls 30 and has a thickness which corresponds substantially to the thickness of the latter.

La cloison 34 s'étend perpendiculairement au sens d'extrusion de la barre 3, c'est-à-dire perpendiculairement aux parois latérales 30, sans toutefois s'étendre dans toute l'épaisseur de ladite barre. Elle présente en effet une arête sommitale 340 qui est distante de la paroi interne de la barre 3.The partition 34 extends perpendicular to the direction of extrusion of the bar 3, that is to say perpendicular to the side walls 30, without however extending throughout the entire thickness of said bar. It has in fact a top edge 340 which is distant from the internal wall of the bar 3.

La distance 'd' qui sépare la paroi interne de la barre 3 de l'arête sommitale 340 est supérieure ou égale à l'épaisseur de tronçon courbe 4c, mais inférieure à l'épaisseur respective de chaque tronçon rectiligne 4a, 4b. Par exemple, une distance 'd' comprise entre 3 mm et 4 mm est compatible avec un tronçon courbe 4c ayant une épaisseur de 2 mm à 3 mm, et des tronçons rectilignes 4a, 4b ayant une épaisseur de 5 mm à 6 mm.The distance 'd' which separates the internal wall of the bar 3 from the top edge 340 is greater than or equal to the thickness of the curved section 4c, but less than the respective thickness of each straight section 4a, 4b. For example, a distance ′ of between 3 mm and 4 mm is compatible with a curved section 4c having a thickness of 2 mm to 3 mm, and straight sections 4a, 4b having a thickness of 5 mm to 6 mm.

Comme cela a été déjà mentionné précédemment, la cloison 34 empêche les tronçons rectilignes 4a ,4b de sortir de leur logement 31a, 31b respectifs, et permet au tronçon courbe 4c de venir se loger dans l'espace situé entre la paroi interne de la barre 3 et l'arête sommitale 34, au niveau d'un des bords transversaux 33. Dans cette configuration à une seule cloison 34, tout le cordon 4 peut être entièrement logé dans la barre 3.As already mentioned previously, the partition 34 prevents the straight sections 4a, 4b from coming out of their respective housing 31a, 31b, and allows the curved section 4c to be housed in the space between the internal wall of the bar 3 and the top edge 34, at one of the transverse edges 33. In this configuration with a single partition 34, the entire cord 4 can be entirely housed in the bar 3.

Comme cela a été évoqué précédemment, pour minimiser l'élévation de température du cordon 4, et favoriser le transfert des calories vers les parois latérales 30, il est avantageux que les tronçons chauffants 4a et 4b soient en contact avec la paroi interne de la barre 3, au moins au niveau d'une des parois latérales 30, plus particulièrement celle qui, en usage, n'est pas située en vis-à-vis d'un mur ou d'un support, mais qui fait face à l'utilisateur (la paroi latérale 30 qui est visible sur la figure 1). Aussi, lorsque la section des logements 31a, 31b a des dimensions supérieures à l'épaisseur des tronçons rectilignes 4a, 4b, on prévoit que ces derniers soient chacun associé à un dissipateur thermique 7.As mentioned above, to minimize the temperature rise of the cord 4, and promote the transfer of calories to the side walls 30, it is advantageous for the heating sections 4a and 4b to be in contact with the internal wall of the bar. 3, at least at one of the walls side 30, more particularly that which, in use, is not located opposite a wall or a support, but which faces the user (the side wall 30 which is visible on the figure 1 ). Also, when the section of the housings 31a, 31b has dimensions greater than the thickness of the straight sections 4a, 4b, provision is made for the latter to be each associated with a heat sink 7.

En se rapportant au mode de réalisation des figures 4, 6 et 10, chaque dissipateur 7 est réalisé en deux parties 7a et 7b conçues dans un matériau conducteur de chaleur du type mentionné précédemment en référence à la barre 3. Les deux parties 7a et 7b peuvent être réalisées dans le même matériau ou dans des matériaux différents de façon à privilégier la diffusion des calories vers l'une ou l'autre desdites parties, et en pratique vers celle qui est en contact avec la paroi interne de la barre 3.Referring to the embodiment of the figures 4 , 6 and 10 , each sink 7 is made in two parts 7a and 7b designed in a heat conductive material of the type mentioned above with reference to the bar 3. The two parts 7a and 7b can be made in the same material or in different materials so to favor the diffusion of calories towards one or the other of said parts, and in practice towards that which is in contact with the internal wall of the bar 3.

La première partie 7a consiste en une pièce allongée, par exemple obtenue par moulage, matriçage ou extrusion, et dont la longueur correspond à celle des tronçons rectilignes 4a, 4b. Elle est conçue de sorte que sa surface externe soit en contact intime avec la paroi interne de la barre 3 qui est en vis-à-vis d'une des parois latérales 30 et présente un profil coïncidant avec celui de ladite paroi interne. La première partie 7a comprend une surface plane dont la largeur correspond à celle des logements internes 31a, 31b. Sa structure interne est adaptée pour recevoir un tronçon rectiligne 4a, 4b. Une rainure est par exemple prévue à cet effet, laquelle rainure est réalisée sur toute la longueur de la première partie 7a et comprend une section complémentaire du tronçon rectiligne 4a, 4b. De cette manière, la surface interne de la rainure est en contact continu avec la surface externe chauffante du tronçon rectiligne 4a, 4b.The first part 7a consists of an elongated part, for example obtained by molding, stamping or extrusion, and the length of which corresponds to that of the straight sections 4a, 4b. It is designed so that its external surface is in intimate contact with the internal wall of the bar 3 which is opposite one of the side walls 30 and has a profile coinciding with that of said internal wall. The first part 7a comprises a flat surface whose width corresponds to that of the internal housings 31a, 31b. Its internal structure is adapted to receive a rectilinear section 4a, 4b. A groove is for example provided for this purpose, which groove is formed over the entire length of the first part 7a and comprises a complementary section of the rectilinear section 4a, 4b. In this way, the internal surface of the groove is in continuous contact with the heating external surface of the rectilinear section 4a, 4b.

La seconde partie 7b est conçue pour s'assembler à la première partie 7a. Pour simplifier la conception et le montage/démontage des différents éléments, les deux parties 7a, 7b sont fixées l'une à l'autre par une liaison démontable du type liaison par obstacle (ex : clipsage).The second part 7b is designed to be assembled with the first part 7a. To simplify the design and assembly / disassembly of the different elements, the two parts 7a, 7b are fixed to each other by a removable connection of the obstacle connection type (eg clipping).

La seconde partie 7b consiste également en une pièce allongée obtenue par moulage, matriçage ou extrusion. Sa longueur correspond à celle de la première partie 7a et correspond sensiblement à celle de la barre 3. La surface extérieure de la seconde partie 7b peut être en contact intime avec la paroi interne de la barre 3 mais cela n'est pas nécessaire pour un transfert satisfaisant et acceptable des calories vers une seule des parois latérales 30 de ladite barre.The second part 7b also consists of an elongated part obtained by molding, stamping or extrusion. Its length corresponds to that of the first part 7a and corresponds substantially to that of the bar 3. The outer surface of the second part 7b can be in intimate contact with the internal wall of the bar 3 but this is not necessary for a satisfactory and acceptable transfer of calories to only one of the side walls 30 of said bar.

La structure interne de la seconde partie 7b comprend une seconde rainure longitudinale réalisée sur toute la longueur de ladite seconde partie. La section de cette rainure est complémentaire de celle du tronçon rectiligne 4a, 4b. De cette manière, la surface interne de la rainure est en contact avec la surface externe chauffante du tronçon rectiligne 4a, 4b et permet de recouvrir la portion de ladite surface externe laissée libre par la première rainure de la première partie 7a. De fait, les deux rainures forment un logement pour le tronçon rectiligne 4a, 4b, et coopèrent de manière à ce que la totalité de la surface externe chauffante desdits tronçons soit en contact continu avec le corps du dissipateur 7.The internal structure of the second part 7b comprises a second longitudinal groove formed over the entire length of said second part. The section of this groove is complementary to that of the straight section 4a, 4b. In this way, the internal surface of the groove is in contact with the external heating surface of the rectilinear section 4a, 4b and makes it possible to cover the portion of said external surface left free by the first groove of the first part 7a. In fact, the two grooves form a housing for the rectilinear section 4a, 4b, and cooperate so that the entire external heating surface of said sections is in continuous contact with the body of the dissipator 7.

L'ensemble formé par l'association d'un dissipateur 7 et d'un tronçon rectiligne chauffant 4a, 4b, constitue un cœur de chauffe. Le cordon 4 comprenant deux tronçons rectilignes 4a, 4b, chaque barre 3 renferme donc deux cœurs de chauffe parallèles, disposés l'un au dessus de l'autre. Cela permet d'avoir une répartition homogène de la température sur toute la surface de la paroi latérale 30.The assembly formed by the association of a dissipator 7 and a rectilinear heating section 4a, 4b, constitutes a heating core. The cord 4 comprising two straight sections 4a, 4b, each bar 3 therefore contains two parallel heating cores, arranged one above the other. This makes it possible to have a homogeneous distribution of the temperature over the entire surface of the side wall 30.

Les dissipateurs 7 et leurs différentes parties 7a, 7b sont préférentiellement réalisées en aluminium. Ce matériau leur confère une certaine malléabilité qui permet de les insérer manuellement dans une barre 3 courbe. Ils prennent la courbure de la barre 3 ce qui les immobilise dans leur logement respectif 31a, 31b et empêche la seconde partie 7b de se désolidariser de la première partie 7a.The heatsinks 7 and their different parts 7a, 7b are preferably made of aluminum. This material gives them a certain malleability which allows them to be inserted manually into a curved bar 3. They take the curvature of the bar 3 which immobilizes them in their respective housing 31a, 31b and prevents the second part 7b from dissociating from the first part 7a.

Ce double cœur de chauffe est aisément inséré dans la barre 3 en glissant chaque cœur de chauffe 7/4a et 7/4b dans son logement respectif 31a, 31a depuis l'un des bords transversaux 33, jusqu'à ce que le tronçon courbe 4c soit logé dans ladite barre en passant au dessus des cloisons 34, 34a, 34b. Les deux câbles 61 sont ensuite passés dans les orifices 610 puis raccordés au thermostat 6 qui les alimente et/ou aux autres câbles 61 des autres cordons 4 du sèche-serviettes 1. Ce raccordement se fait préférentiellement à l'intérieur du montant 2, ce dernier comprenant des orifices 210 situés en vis-à-vis des orifices 610 lorsque la barre 3 est fixée sur ledit montant (figure 2).This double heating core is easily inserted into the bar 3 by sliding each heating core 7 / 4a and 7 / 4b into its respective housing 31a, 31a from one of the transverse edges 33, until the curved section 4c either housed in said bar passing above the partitions 34, 34a, 34b. The two cables 61 are then passed through the orifices 610 and then connected to the thermostat 6 which supplies them and / or to the other cables 61 of the other cords 4 of the towel dryer 1. This connection is preferably made inside the upright 2, this the latter comprising orifices 210 situated opposite the orifices 610 when the bar 3 is fixed to said upright ( figure 2 ).

Pour limiter les coûts de fabrication, les dissipateurs 7 peuvent être supprimés (figures 8 et 9). Dans ce cas, chaque tronçon rectiligne 4a, 4b chauffant constitue un cœur de chauffe. Le cordon 4 forme donc encore un double cœur de chauffe. La mise en place de ce double cœur de chauffe dans la barre 3 est identique à celle décrite au paragraphe précédent. Pour minimiser l'élévation de température du cordon 4, et favoriser le transfert des calories vers les parois latérales 30, on prévoit que la section des logements 31a, 31b ait des dimensions égales ou inférieures à l'épaisseur des tronçons rectilignes 4a, 4b de sorte que ces derniers soient en contact avec la paroi interne de la barre 3, au moins au niveau d'une des parois latérales 30, plus particulièrement la paroi latérale 30 qui est visible sur la figure 1.To limit manufacturing costs, the heatsinks 7 can be omitted ( figures 8 and 9 ). In this case, each rectilinear section 4a, 4b heating constitutes a heating heart. The cord 4 therefore still forms a double heating core. The installation of this double heating core in the bar 3 is identical to that described in the previous paragraph. To minimize the temperature rise of the bead 4, and promote the transfer of calories to the side walls 30, provision is made for the section of the housings 31a, 31b to have dimensions equal to or less than the thickness of the straight sections 4a, 4b of so that the latter are in contact with the internal wall of the bar 3, at least at one of the side walls 30, more particularly the side wall 30 which is visible on the figure 1 .

L'invention qui vient d'être décrite en référence au sèche-serviettes 1, et notamment le cordon 4, s'applique à d'autres types d'appareils de chauffage électrique domestiques tels que des radiateurs d'appoint fixes ou mobiles ayant des barres chauffantes, les cordons 4 étant insérés dans ces barres.The invention which has just been described with reference to the towel dryer 1, and in particular the cord 4, applies to other types of domestic electric heating appliances such as fixed or mobile auxiliary radiators having heating bars, the cords 4 being inserted in these bars.

L'agencement des différents éléments et/ou moyens et/ou étapes de l'invention, dans les modes de réalisation décrits ci-dessus, ne doit pas être compris comme exigeant un tel agencement dans toutes les implémentations. En tout état de cause, on comprendra que diverses modifications peuvent être apportées à ces éléments et/ou moyens et/ou étapes, sans s'écarter de l'esprit et de la portée de l'invention. En particulier :

  • une seule barre 3 peut être fixée sur le montant 2,
  • plusieurs barres 3 peuvent être fixées entre deux ou plusieurs montants verticaux parallèles,
  • les barres 3 peuvent être disposées à intervalle régulier le long du montant 2,
  • les barres 3 peuvent être obtenues par tous procédés de fabrication convenant à l'homme du métier, notamment par moulage, en une ou plusieurs parties qui s'assemblent,
  • les bouchons 330 peuvent être réalisés en métal ou en tout autre matériau convenant à l'homme du métier,
  • les différents éléments chauffants 4 peuvent être connectés en parallèle,
  • le tronçon rectiligne 4a peut avoir une épaisseur inférieure au tronçon rectiligne 4b,
  • les logements 31a, 31b peuvent avoir une section circulaire, ovale, ou toute autre forme convenant à l'homme du métier, notamment une forme qui est complémentaire de celle des tronçons rectilignes 4a, 4b,
  • l'épaisseur des cloisons 34a, 34b, 34, peut être supérieure ou inférieure à l'épaisseur des parois latérales 30,
  • les cloisons 34a, 34b, 34, peuvent avoir une section droite ou courbe. Elles peuvent être obliques, et ne sont pas nécessairement parallèles aux bords longitudinaux 32a, 32b, ni parallèles entre elles,
  • les deux parties 7a, 7b du dissipateur 7 peuvent être en contact avec la paroi interne de la barre 3 de manière à ce que chaque paroi latérale 30 soit chauffée de manière identique,
  • le dissipateur 7 peut bien évidemment être utilisé dans une barre ayant la configuration de la figure 9, c'est-à-dire avec une seule cloison de séparation.
The arrangement of the various elements and / or means and / or steps of the invention, in the embodiments described above, should not be understood as requiring such an arrangement in all implementations. In any event, it will be understood that various modifications may be made to these elements and / or means and / or steps, without departing from the spirit and scope of the invention. In particular :
  • only one bar 3 can be fixed on the upright 2,
  • several bars 3 can be fixed between two or more parallel vertical uprights,
  • the bars 3 can be arranged at regular intervals along the upright 2,
  • the bars 3 can be obtained by any manufacturing process suitable for a person skilled in the art, in particular by molding, in one or more parts which are assembled,
  • the stoppers 330 can be made of metal or any other material suitable for a person skilled in the art,
  • the different heating elements 4 can be connected in parallel,
  • the straight section 4a may have a thickness less than the straight section 4b,
  • the housings 31a, 31b may have a circular, oval section or any other shape suitable for a person skilled in the art, in particular a shape which is complementary to that of the straight sections 4a, 4b,
  • the thickness of the partitions 34a, 34b, 34, may be greater or less than the thickness of the side walls 30,
  • the partitions 34a, 34b, 34, may have a straight or curved section. They can be oblique, and are not necessarily parallel to the longitudinal edges 32a, 32b, nor parallel to each other,
  • the two parts 7a, 7b of the dissipator 7 can be in contact with the internal wall of the bar 3 so that each side wall 30 is heated identically,
  • the dissipator 7 can obviously be used in a bar having the configuration of the figure 9 , that is to say with a single partition.

Claims (12)

  1. Domestic electric heating appliance comprising at least one vertical upright (2) to which there is fixed at least one flat hollow bar (3) having two longitudinal edges (32a, 32b) and two transverse edges (33), an electric heating element (4) being housed in said bar,
    - the electric heating element (4) being a cord formed by two rectilinear heating sections (4a, 4b) linked by a curved section (4c),
    - the bar (3) comprising arrangements (31a, 31b) to each receive one of the rectilinear sections (4a, 4b) of the cord (4),
    characterized in that:
    - the cord has a double-insulated electrical sheath,
    - the curved section (4c) has a thickness less than those of the rectilinear sections (4a, 4b),
    - the bar (3) comprises an arrangement to receive the curved section (4c) such that all of said cord is housed in said bar,
    - the bar (3) comprises said arrangements to each receive one of the rectilinear sections of the cord in the form of two internal housings (31a, 31b) parallel to the longitudinal edges (32a, 32b), the rectilinear sections (4a, 4b) of the cord (4) being housed respectively in one of said housings, the curved section (4c) being located at one of the transverse edges (33) of said bar,
    - the two internal housings (31a, 31b) are separated by at least one partition (34, 34a, 34b), the top edge (340, 340a, 340b) of which is at a distance from the internal wall of the bar (3),
    - the distance (d) between the internal wall of the bar (3) and the top edge (340, 340a, 340b) of the partition (34, 34a, 34b) is greater than or equal to the thickness of the curved section (4c) and less than the respective thickness of each rectilinear section (4a, 4b) such that said curved section (4c) is housed in the space separating said top edge (340, 340a, 340b) from said internal wall, said partition (34, 34a, 34b) preventing the rectilinear sections (4a, 4b) from leaving their respective housing (31a, 31b).
  2. Appliance according to Claim 1, wherein:
    - the two internal housings (31a, 31b) are separated by two partitions (34a, 34b) each having a top edge (340a, 340b) at a distance from the internal wall of the bar (3),
    - the partitions (34a, 34b) defining a central channel on either side of which the two housings (31a, 31b) are situated,
    - the distance (d) between the internal wall of the bar (3) of the top edge (340a, 340b) of the partitions (34a, 34b) is greater than or equal to the thickness of the curved section (4c) and less than the respective thickness of each rectilinear section (4a, 4b) such that said curved section (4c) is housed in the space separating said internal wall from the top edges (340a, 340b), said partitions (34a, 34b) preventing said rectilinear sections (4a, 4b) from leaving their respective housing (31a, 31b).
  3. Appliance according to Claim 2, wherein a temperature probe (5) and/or a thermal circuit breaker is housed in the central channel, the thickness of the probe and/or of the thermal circuit breaker being greater than the distance between the internal wall of the bar (3) and the top edges (340a, 340b) of the partitions (34a, 34b).
  4. Appliance according to Claim 1, wherein the two internal housings (31a, 31b) are separated by a single partition (34a).
  5. Appliance according to one of the preceding claims, wherein the curved section (4c) is located at one of the transverse edges (33) of the bar (3), which transverse edge is blocked by a plug (330) which holds said curved section in position in said bar.
  6. Appliance according to one of the preceding claims, wherein the rectilinear sections (4a, 4b) of the cord (4) are each associated with a heat sink (7), which heat sinks are installed in the bar (3) so as to be in intimate contact with the internal wall of said bar.
  7. Appliance according to one of the preceding claims, wherein the bar (3) is formed by an extruded profile.
  8. Appliance according to one of Claims 1 to 7, wherein the rectilinear sections (4a, 4b) of the cord (4) are each formed by a flexible heating twist having a double-insulated electrical sheath, which twists are connected to one another by a non-heating flexible electric cable having a double-insulated electrical sheath and forming the curved section (4c).
  9. Appliance according to one of Claims 1 to 7, wherein the rectilinear sections (4a, 4b) of the cord (4) are each formed by a flexible heating twist having a double-insulated electrical sheath, which twists are connected to one another by a flexible heating twist having a double-insulated electrical sheath and forming the curved section (4c).
  10. Appliance according to one of the preceding claims, wherein the rectilinear sections (4a, 4b) of the cord (4) have the same thickness or different thicknesses.
  11. Appliance according to one of the preceding claims, wherein:
    - the curved section (4c) of the cord (4) is located at one of the transverse edges (33) of the bar (3),
    - orifices (610) are formed in the bar (3) at the transverse edge (33) which is situated opposite the transverse edge (33) where the curved section (4c) is located, the rectilinear sections (4a, 4b) being terminated by electrical connection ends (61) exiting from said bar through said orifices.
  12. Appliance according to one of the preceding claims, consisting of an electric towel dryer, the bars (3) being drying bars.
EP16170699.9A 2015-05-21 2016-05-20 Household electrical heating appliance comprising at least one flat hollow bar in which an electric heating element is housed Active EP3096094B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1554549A FR3036466B1 (en) 2015-05-21 2015-05-21 DOMESTIC ELECTRICAL HEATING APPARATUS HAVING AT LEAST ONE FLAT HOLLOW BAR IN WHICH A HEATING ELECTRICAL ELEMENT IS LOADED

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EP3096094A1 EP3096094A1 (en) 2016-11-23
EP3096094B1 true EP3096094B1 (en) 2020-07-15

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IT201600129225A1 (en) * 2016-12-21 2018-06-21 Dl Radiators S R L DEVICE FOR HEATING AN ENVIRONMENT
FR3062895B1 (en) * 2017-02-16 2019-04-05 Uniglory Industrial Limited DOMESTIC ELECTRICAL HEATING DEVICE, ESPECIALLY OF THE DRYER TYPE.
FR3095261B1 (en) 2019-04-17 2021-08-06 Texas De France Method of inserting a heating cord into a heat sink
FR3120116A1 (en) 2021-02-24 2022-08-26 Texas De France Heating apparatus comprising at least one vertical heating upright on which drying bars are installed
IT202100011105A1 (en) * 2021-04-30 2022-10-30 Nextheat S R L ELECTRIC RADIATOR
IT202200016992A1 (en) 2022-08-08 2024-02-08 Nextheat S R L Electric radiator
WO2024209337A1 (en) * 2023-04-07 2024-10-10 Emmesteel S.R.L. Electric heating device with open structure and power regulator

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FR3036466A1 (en) 2016-11-25
EP3096094A1 (en) 2016-11-23
ES2819948T3 (en) 2021-04-19
FR3036466B1 (en) 2019-06-14

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