Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47K—SANITARY EQUIPMENT; ACCESSORIES THEREFOR, e.g. 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
  • F24H3/00—Air heaters
  • F24H3/002—Air heaters using electric energy supply
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
  • F24H9/00—Details
  • F24H9/18—Arrangement or mounting of grates or heating means
  • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
  • F24H9/1863—Arrangement or mounting of electric heating means
• • 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
  • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
• • 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

Definitions

• the subject of the invention is a towel radiator, at least one towel bar of which incorporates a heat sink in which! is housed a heating electric cord.
• the invention relates to the general technical field of electric heating elements intended to be integrated in the towel bars of a towel radiator.
• a towel radiator generally comprises at least one tubular towel rail typically made of a material having a good thermal conductivity such as steel or aluminum.
• the radiator comprises a multitude of tubular towel bars arranged horizontally between vertical uprights. Each bar contains a heating electric cord arranged on all or most of the length of said bar. Thus, a wet towel disposed on a bar can be heated and dried quickly.
• heating elements inside the metal tubular bars of reduced section requires the use of a heating cord of reduced section having an electrical insulation generally required for this type of apparatus.
• the latter is advantageous for the latter to be in contact with the body of the towel heater, and more particularly with a towel bar.
• the calories generated by the heating electric cord are thus quickly evacuated by the bar.
• thermally conductive material such as magnesia or silica.
• the cords in the bars are difficult because it requires making loops in each of said bars.
• the cords are in simple linear contact with the inner wall of the bars. This results in a local temperature rise of the cords in areas where there is no contact,
• the flexible elastomeric sheath of heating cords having low thermal conductivity the areas of the cord that are not in contact with the inner wall of the bars undergo a temperature rise that can approach or exceed the maximum allowed value.
• the aging of the superheated zones is then rapid and leads to a degradation of the insulating sheath and, ultimately, a loss of electrical insulation of the cord.
• the main objective of the invention is to remedy this state of affairs.
• the object of the invention is to increase the service life of the electric heating cords used in a towel radiator.
• Another object of the invention is to improve the transmission and distribution of heat between the electric heating cord and the towel bar.
• Yet another object of the invention is to reduce the maximum temperature likely to be reached by the inner wall of the towel bar.
• Another object of the invention is to provide a towel radiator whose design is simpler and faster assembly than the towel radiators known from the prior art.
• the solution proposed by the invention is a towel radiator of the type comprising at least one tubular towel rail fixed horizontally on at least one upright, an electrically insulated heating electric cord being arranged in said bar.
• This radiator is remarkable in that: the cord is housed inside the body of a heat sink, said body being made of a heat conducting material, said body being configured so that the whole of the external heating surface of said cord is in contact with said body; ,
• the heating assembly formed by the dissipator and the cord is inserted into the towel bar so as to ensure a continuous surface contact between the inner wall of said bar and at least a part of the external surface of the body of said heat sink, on any the length of said body.
• the dissipator being in surface contact with the towel bar, the calories are removed quickly and homogeneously by said bar. Drying is therefore very effective.
• Another aspect of the invention relates to a method of manufacturing a towel radiator comprising at least one tubular towel bar, said method comprising:
• an electrically insulated heating electric cord inside a heat sink comprising a body made of a heat-conducting material, said cord being inserted into said body so that the whole of the external heating surface of said cord in contact with said body,
• FIG. 1 is an overall perspective view of a towel radiator according to the invention
• FIG. 2 is an exploded view of an assembly consisting of a heat sink and a heating electric cord
• Figure 3 shows the assembly of Figure 2 assembled and attached to a towel bar
• FIG. 4 shows the assembly of FIG. 2 assembled and inserted into a towel bar
• FIG. 5 is a front view of the assembly of FIG. 3,
• FIG. 8 is a front view of the assembly of FIG. 4,
• FIG. 7 is a front view of the assembly of FIG. 5,
• FIG. 8 shows in detail the attachment of a heated towel rail to a vertical upright of a towel radiator according to the invention
• FIG. 9 is an exploded view of the towel radiator of FIG. 1,
• FIG. 10 is an overall perspective view of a towel radiator in a variant embodiment
• FIG. 11 is an exploded view of the towel radiator of FIG.
• the towel heater 1 comprises at least one towel bar 2 fixed horizontally on at least one post 3 and on which the items to be dried are placed.
• ie radiator 1 comprising a multitude of towel bars 2 fixed horizontally on at least one, preferably two vertical uprights 3, As explained further in the description, each bar 2 is advantageously assembled on the frame of two vertical uprights 3 of the radiator.
• each towel bar 2 is in the form of a cylindrical tube open at each end thereof.
• the tube may however be closed at one of its ends and its section may be square, rectangular, oval, polygonal, etc.
• the bar 2 is preferably made of a heat conducting material, typically steel, cast iron or aluminum.
• the bar 2 could however be made of a non-metallic material of the polymer or composite type.
• It encloses an electric heating cord 4 electrically insulated.
• the bead 4 is of the type known to those skilled in the art, preferably formed by an electrical resistor surrounded by a double silicone-based flexible sheath. Its length substantially corresponds to that of the bar 2.
• substantially is meant that the length of the cord 4 is equal to or slightly less, for example a few millimeters or a few centimeters, than that of the bar 2.
• the outer diameter of the cord 4 is less than the inner diameter of the bar 2.
• At least one end of the cord 4 terminates with an electrically insulated electrical cable 40 which allows its connection to the thermostat (not shown) attached to the radiator.
• the cord 4 is housed inside the body of a heat sink 5.
• the body of the latter is made of a heat conducting material.
• the body of the dissipator 5 is configured so that all of the heating surface (that is to say the outer surface, except the end side surfaces) of the cord 4 is in contact with said body.
• the housing of the dissipator 5 inside which is housed the cord 4 has a length equal to or greater than the length of the outer heating surface of said cord.
• Manufacturing and / or adjustment defects can locally cause slight detachments between the outer heating surface of the cord 4 and the body of the dissipator 5, but this has no great influence on the evacuation of the calories as long as these contact defects appear. sporadically, to eliminate these contact defects, it may be possible to provide an intimate chemical bond between the outer surface of the cord 4 and the housing of the dissipator 5. Such a chemical bond may for example be obtained by casting the material constituting the body of the dissipator 5 on the cord 4, at a melting temperature corresponding to that of the sheath surrounding the heating electric resistance of said cord.
• the body of the dissipator 5 is made in two parts 5a and 5b designed in a heat conducting material of the type mentioned above.
• the two parts 5a and 5b can be made of the same material or in different materials so as to favor the diffusion of calories towards one or the other of said parts, and in practice to that which is in contact with the inner wall of the Bar 2.
• the first part 5a consists of an elongated piece, for example obtained by molding, stamping or extrusion, and whose length corresponds to that of the cord 4. It is designed so that its outer surface is in contact with the inner wall of the bar 2 and has a profile coinciding with that of said inner wall.
• the first part 5a comprises, on an angular sector between 20 ° and 380 °, a circular external structure whose diameter corresponds to the diameter of the inner wall of the cylindrical tubular bar 2.
• its internal structure is also advantageously circular.
• This internal structure is, however, provided with a first longitudinal groove 50a in which the cord 4 is positioned.
• the groove 50a is made along the entire length of the first part 5a and comprises a section complementary to that of the cord 4. In this way, the inner surface of the groove 50a is in continuous contact with the heating outer surface of the cord 4.
• the second part 5b is designed to assemble with the first part 5a.
• the two parts 5a, 5b are fixed to each other by a removable connection type obstacle connection (eg clipping).
• the second part 5b also consists of an elongated piece obtained by molding, stamping or extrusion. Its length is however greater than that of the first part 5a and corresponds substantially to that of the bar 2.
• the length of the cord 4 is limited to the length of the shortest part (in this case the first part 5a) of the body of the heatsink 5 to ensure continuous contact with said heatsink over the entire length of said bead.
• the outer surface of the second portion 5b may be in contact with the inner wall of the bar 2 but this is not necessary for a satisfactory and acceptable transfer of calories to said bar.
• the internal structure of the second portion 5b comprises a second longitudinal groove 50b made along the entire length of said second portion.
• the section of this groove 50b is complementary to that of the cord 4.
• the inner surface of the groove 50b is in contact with the external heating surface of the cord 4 and allows to cover the portion of said outer surface left free by the first groove 50a.
• the two grooves 50a and 50b form a housing for the cord 4, and cooperate so that the entire external heating surface of said cord is in continuous contact with the body of the dissipator 5.
• the heating assembly formed by the dissipator 5 and the cord 4, is easily inserted removably into the bar 2.
• the insertion is carried out ensuring continuous surface contact between the inner wall of the bar 2 and at least a portion of the outer surface of the body of said dissipator, over the entire length of said body.
• all of the external surface of the first part 5a is in continuous surface contact with the inner wall of the bar 2. In the appended figures, this contact is made on the part upper of the inner wall of the bar 2, but it is of course conceivable to provide it on another part of said wall.
• the outer surface of the body of the dissipator 5, and more particularly the entire outer surface of the first portion 5a, has projecting portions 51 configured to be housed in recessed portions
• the projecting portions 51 and recesses 21 have a dual function: they make it possible to oppose the rotation of the dissipator 5 in the bar 2 and their strong congruence makes it possible to increase the heat exchange surface.
• the projecting parts 51 are grooves and the recessed portions 21 are ribs. These grooves and these ribs are preferably longitudinal. To avoid having to angularly position the bar 2 cylindrical relative to (x) amount (s) 3 of the radiator 1, the ribs 21 are formed around the entire periphery of the inner wall of said bar.
• each vertical upright 3 comprises a circular opening 30 into which an end of the bar 2 is inserted.
• the radiator 1 comprises a multitude of bars 2 each enclosing its own heating assembly.
• the uprights 3 are provided with as many openings 30.
• Each opening 30 is provided with a sleeve 31 making it possible to house one end of the bar 2.
• a perforated washer 32 is placed at the level of the sleeve 31 so as to seal the end of the bar 2 housed in said sleeve.
• a screw 33 allows maintain in position the washer 32 against the sleeve 31.
• the screw 33 is fixed in a complementary tapping 53b provided in the second part 5b of the body of the dissipator 5.
• the heat sink 5 and the washers 32 thus hold the two together. 3 amounts and participate in the structure of the radiator 1.
• the use of the dissipator 5 allows thermal distribution over a large contact area.
• the surface temperature of the inner wall of the bar 2 is greatly reduced, so that it is possible to use a bar made of a material having a low maximum temperature of use, and in any case less than the maximum temperature of use of said heatsink heated by the cord 4.
• This is particularly the case when the material of the bar 2 is non-metallic and poor heat conductor (polymers, composites, ). These materials have the disadvantage of flowing in case of load especially when the temperature rises.
• the dissipator 5 perfectly uniformizes the temperature over its entire contact surface; there are no hot spots.
• the dissipator 5 is rigid enough to withstand the load of the article to be dried and to prevent creep of the bar 2.
• the dissipator 5 is therefore preferably made of a rigid heat-conducting material which consolidates and / or stiffens the bar 2 and serving as an armature to said bar.
• FIGS 10 and 11 illustrate an alternative embodiment of the radiator object of the invention.
• the main difference between this mode and that described above lies essentially in the square or rectangular section of the tubular towel rail 2 '.
• the body of the dissipator is always made in two parts 5'a and 5'b flocking to each other.
• These portions 5'a, 5'b comprise complementary grooves identical to those described above and in which the cord 4 is housed so that the entire external heating surface of said cord is in continuous contact with the body of the dissipator.
• the outer surface of the first portion 5'a is designed to be in continuous contact with the inner wall of the bar 2 'and has a profile coinciding with that of said inner wall.
• the first part 5'a comprises a flat rectangular outer structure whose dimensions correspond to that of the inner wall of the bar 2 '.
• the second portion 5'b also comprises a flat rectangular outer structure intended to come into contact with the inner wall of the bar 2 '.
• the heating assembly formed by the dissipator 5'a, 5'b and the cord 4, is easily removably inserted in the bar 2 '.
• the insertion is performed so as to ensure a continuous surface contact between the inner wall of the bar 2 'and at least a portion of the outer surface of the body of said dissipator, over the entire length of said body.
• all of the outer surface of the first portion 5'a and all or part of the outer surface of the second portion 5'b are in continuous surface contact with the inner wall of the bar 2 '.
• the heating assembly is held in position in the bar 2 'by screwing, welding, clipping, etc. It is the same for fixing the bar 2 'on the uprights 3'.

Landscapes

• 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)
• Thermotherapy And Cooling Therapy Devices (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=47748665

Family Applications (1)

Country Status (6)

Cited By (4)

Families Citing this family (6)

Family Cites Families (3)

• 2012
  • 2012-01-16 FR FR1250417A patent/FR2985654B1/fr not_active Expired - Fee Related
• 2013
  • 2013-01-14 ES ES13705828.5T patent/ES2579345T3/es active Active
  • 2013-01-14 WO PCT/FR2013/050084 patent/WO2013107973A1/fr not_active Ceased
  • 2013-01-14 EP EP13705828.5A patent/EP2804516B1/de active Active
  • 2013-01-14 PL PL13705828.5T patent/PL2804516T3/pl unknown
  • 2013-01-14 PT PT137058285T patent/PT2804516T/pt unknown

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events