EP2251612A1 - Elektrisches Heizgerät mit Wärmeübertragungsflüssigkeit, das aus gegossenen Modulelementen besteht - Google Patents

Elektrisches Heizgerät mit Wärmeübertragungsflüssigkeit, das aus gegossenen Modulelementen besteht Download PDF

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Publication number
EP2251612A1
EP2251612A1 EP10161333A EP10161333A EP2251612A1 EP 2251612 A1 EP2251612 A1 EP 2251612A1 EP 10161333 A EP10161333 A EP 10161333A EP 10161333 A EP10161333 A EP 10161333A EP 2251612 A1 EP2251612 A1 EP 2251612A1
Authority
EP
European Patent Office
Prior art keywords
modular
tubular
heating
tubular element
radiator
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.)
Withdrawn
Application number
EP10161333A
Other languages
English (en)
French (fr)
Inventor
Roland Brot
Benoît Williamson
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.)
Atlantic Industrie SAS
Atlantic Industries Inc
Original Assignee
Atlantic Industrie SAS
Atlantic Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Atlantic Industrie SAS, Atlantic Industries Inc filed Critical Atlantic Industrie SAS
Publication of EP2251612A1 publication Critical patent/EP2251612A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/088—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal for domestic or space-heating systems
    • 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
    • F24H3/004—Air heaters using electric energy supply with a closed circuit for a heat transfer liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/0226—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with an intermediate heat-transfer medium, e.g. thermosiphon radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
    • F28F9/266—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators by screw-type connections

Definitions

  • the invention relates to the field of heat transfer fluid radiators, and more particularly that of heat transfer fluid electric radiators.
  • Heat transfer radiators are heating devices comprising heated tubular elements inside which circulates the fluid carrying the calories, so as to heat the entire radiator by conduction. These devices are of two main types, namely the central heating radiators for which the coolant is heated outside the radiators, by means of a boiler to which are connected said radiators, and the electric radiators in which the fluid coolant is heated by one or more electrical resistance (s) disposed (s) within the heating elements and circulates in closed circuit in said elements.
  • radiators generally consist of an assembly of tubular elements comprising a manifold for the hot fluid (connected to the hot water pipe coming from the boiler or incorporating the electric heating resistance) and a collector for the cooled fluid, both collectors being interconnected by fluidic connection conduits for the circulation of the fluid between said collectors.
  • connection ducts which are numerous and of various shapes (for example in the form of cylindrical tubes or parallelepipedic blades), are themselves heated by the coolant coming from the hot collector passing through them, and in turn serve to heat the air. the room where the radiator is installed. Some radiators are also used as dry towels.
  • the number of heating connection ducts is multiplied.
  • the more the number of connecting conduits is increased the greater the number of connections to be made between the collectors and the connecting ducts, and consequently the risk of leakage defects and the associated manufacturing costs are increased.
  • connection between the various tubular elements is a critical point because this connection must ensure the communication of the fluid between them without generating fluid leakage.
  • the welding operation is relatively complex technically because it requires special know-how, substantial industrial resources, a manual preparation phase for the establishment of the various elements relative to each other, holding templates during welding and baking ovens (in the case of soldering by welding for example).
  • a manual preparation phase for the establishment of the various elements relative to each other, holding templates during welding and baking ovens (in the case of soldering by welding for example).
  • a first object of the invention is therefore to reduce the risk of leakage in electric heat radiators heat transfer fluid.
  • Another object of the invention is to simplify the manufacture of such radiators and reduce their cost.
  • Another object of the present invention is to reduce or eliminate the number of welds between the tubular elements allowing the flow of fluid between them.
  • radiators To reduce the risk of leaks in the welds of the elements ensuring the fluidic connection of the heat transfer fluid, radiators have been proposed in which the communication between the vertical heating tubes (hot collector and cold collector) is reduced to only two ducts. fluid connection.
  • the heat exchange with the external environment is then provided mainly by horizontal heating blades or a continuous solidarized plate (s) directly on the outer wall of the vertical heating tubes.
  • These heating blades and this plate are generally made of solid material.
  • Another object of the invention is therefore also to increase the thermal efficiency of coolant radiators.
  • the present invention proposes an electric radiator with heat transfer fluid comprising at least one vertical heating tube, closed at both ends and enclosing an electrical resistance heating said heat transfer fluid, characterized in that the radiator consists of at least two modular elements, each modular element comprising at least one vertical tubular element, integral with a diffuser in the form of fins connecting to the tubular element in a direction substantially parallel to the longitudinal axis of said tubular element, and is housed in an envelope surrounding said tubular element, the tubular element being held in place in said casing by spacers formed by at least a portion of the fins of the diffuser, allowing said casing to be heated by conduction, and in that the modular elements are stacked vertically and connected to each other cal of their heating tubular elements by connecting pieces, so that the tubular element of each modular element constitutes a section of the heating tube of the radiator.
  • the fins are fins preferably vertical, arranged tangentially or radially to the wall of the tubular element, for example in a radiating arrangement around said tubular element, and developing in a direction substantially parallel to the longitudinal axis of the latter. These fins form between them air circulation ducts and thus participate, (in addition to the participation of some of them in heating by conduction of the envelope) to the circulation, within said casing, air heated by convection by the heating elements (in particular tubular element and diffuser).
  • the envelope is also substantially parallel to the longitudinal axis of the tubular element.
  • tubular elements are not in direct contact with the outer casing of the modular element, which allows the heating of these tubular elements, and therefore of the heat transfer fluid, at much higher temperatures (for example nearby temperatures from 100 ° C to 140 ° C) at the usual temperatures of the heating collectors of the state of the art, limited to about 80 to 90 ° C according to the standards currently in force, for reasons of safety for the user.
  • the closed ends of the heating tube are preferably equipped with plug for their closure, the heat transfer fluid being retained in a closed circuit.
  • these plugs are preferably made according to the patent application. FR 07/09080 from the same applicant.
  • the envelope of each modular element is open at least partially at its two ends, said upper and lower, so as to allow the circulation of convection heated air, a modular element to another.
  • the periphery of at least one of the envelopes may also have orifices or discontinuities, such as openings in the form of slots, to further promote convection, especially near the envelope of said modular element.
  • each modular element comprises a plurality of vertical tubular elements housed in the same envelope, each tubular element being connected to the corresponding tubular element of the adjacent modular element, so as to form a plurality of tubes. heaters for said radiator.
  • these tubular elements form heating tubes independent of each other closed at each of their ends, each of these tubes enclosing a heating element-type heating element, thus making it possible to form autonomous heating tubes having no fluid connection between them . No soldering is required between the heating tubes.
  • Extrusion makes it possible to manufacture large modules whose length can easily be adapted to the required height of the modular element.
  • the molding makes it possible to manufacture a large number of modules of equal dimensions, the power of the radiator being proportional to the number of modular elements.
  • These molded modular elements differ from the molded modular elements of the prior art comprising for example two tubular elements connected by a connecting pipe ensuring the communication of the heat transfer fluid between the tubular elements which require the introduction into the mold of a removable rod called "dagger" for reserving a volume corresponding to this pipe, the access zone must after withdrawal of the rod be closed by welding.
  • the manufacture of the modular elements of the radiator according to the invention having no heat transfer fluid communication between the two heating tubes, does not require the presence of such a rod, and thus saves as many welding operations.
  • the connecting pieces of two tubular elements of adjacent modular elements are connectors screwed at their two ends to said tubular elements, for example of type "nipple” connectors, that is to say cylindrical threaded tubes. at each end in reverse steps, this allows the approximation of the modular elements when the connecting piece is screwed simultaneously on the adjacent tubular elements.
  • the electric radiator with heat transfer fluid consists of two superposed modular elements 1 each comprising a single vertical tubular element 2, here of cylindrical shape, enclosing a heat transfer fluid.
  • These two tubular elements 2 connected by means of a connecting piece 12 form a heating tube 20 at the bottom of which is disposed a heating resistor 4 connected to a power supply (not shown).
  • the coolant is heated by the electrical resistance 4 and circulates throughout the heating tube 20 consisting of two tubular elements 2 delimited by substantially cylindrical walls 3.
  • the ends of the heating tube 20 are closed by a plug (not shown in this figure, referenced 19 on the figure 8 ).
  • the walls 3 of the tubular element 2 are radially extended by vertical fins 8 which serve as spacers between said wall 3 of the tubular element 2 and respectively the front walls 5 and rear 6 and the side walls 7 of said envelope 11 of the modular element 1.
  • the heat transfer fluid can thus be raised to high temperatures, for example example between 100 and 140 ° C, while the envelope 11 remains at a temperature compatible with use by the public, that is to say a temperature of not more than about 80 to 90 ° C.
  • the thickness of the fins can range from about 0.5 to 5 mm.
  • the vertical tubular element is of cylindrical shape, but could be of oval, square, rectangular, hexagonal or any other shape.
  • each modular element 1 encloses two vertical parallel tubular elements 2, to constitute two heating tubes 20, each heating tube containing a heating electric resistor 4 in its lower part.
  • the arrangement of the fins 8 may be in accordance with the provision of the first embodiment presented to the figure 2 .
  • 7 and 9 may be provided additional spacers directly connecting two walls vis-à-vis the casing 11 (referenced 9 on the figure 4 ), as well as spacers connecting the two heating elements to each other (referenced 10). All these spacers also create between them vertical ducts for air circulation, as visible on the figure 9 .
  • the fins 8 are arranged radially around the tubular element 2.
  • the fins are tangentially disposed relative to the cylindrical wall 3 of the tubular element 2. In this case, they directly connect the front wall 5 and the rear wall 6 of the casing 11 of the modular element by integrating a tangential connecting zone to the wall 3, along a generatrix of the tubular element 2.
  • Such a modular element 1 may be made of aluminum-based material or aluminum alloy manufactured by molding or extrusion.
  • the molding manufacturing method is advantageous because it allows in particular to obtain modular elements 1 all identical whose number can be chosen to meet the desired power requirements of the radiator.
  • the electric radiator according to the invention can be constituted, as shown in FIG. figure 7 only two modular elements 1 assembled by means of connecting pieces 12 at their respective tubular elements 2.
  • connecting pieces 12 may be connectors called “nipples”, that is to say, tubular connections threaded at their two ends in inverted screw pitches.
  • the heating tubes 20 consist of the tubular elements 2 of each modular element 1 and the inner walls of the "nipple” connections between said tubular elements. Sealing between two modular elements is provided by a silicone / elastomer seal or klingerite seal placed between the wall of each tubular element and the "nipple" connection before screwing it.
  • the envelope 11 may be partially or completely open at its upper and lower ends so as to allow the circulation of the air heated by convection along the vertical fins and struts with the external environment of the radiator and the adjacent modular element.
  • a protective cover for example a grid or a plate provided with slots allowing the evacuation of air
  • the tubular heating element of the upper modular element can be provided for reasons of safety vis-à- users.
  • orifices or slots 13 for example vertical as represented on the figure 7 , can be formed in the front wall of the casing 11, these orifices or slots are of small dimensions, to further promote the flow of air while prohibiting the direct access of the user to the wall 3 of the tubular element 2.
  • Such heat transfer fluid radiator comprises no welding and therefore no risk of leakage of the fluid, the latter being enclosed in heating tubes 20 individual and autonomous without connection between them.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
EP10161333A 2009-05-04 2010-04-28 Elektrisches Heizgerät mit Wärmeübertragungsflüssigkeit, das aus gegossenen Modulelementen besteht Withdrawn EP2251612A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0902132A FR2945107B1 (fr) 2009-05-04 2009-05-04 Radiateur electrique a fluide caloporteur forme d'elements modulaires moules

Publications (1)

Publication Number Publication Date
EP2251612A1 true EP2251612A1 (de) 2010-11-17

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EP10161333A Withdrawn EP2251612A1 (de) 2009-05-04 2010-04-28 Elektrisches Heizgerät mit Wärmeübertragungsflüssigkeit, das aus gegossenen Modulelementen besteht

Country Status (2)

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EP (1) EP2251612A1 (de)
FR (1) FR2945107B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBL20110006A1 (it) * 2011-06-24 2012-12-25 Ferroli Spa Radiatore elettrico a colonna, con alimentazione a due o piu' resistanze verticali
EP3734164A1 (de) * 2019-04-24 2020-11-04 Vasco Group nv Elektrischer heizkörper
WO2021058846A1 (es) * 2019-09-23 2021-04-01 Comtec Iberica, S.L. Radiador eléctrico modular

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2098897A5 (de) * 1970-07-30 1972-03-10 Thomson Csf
DE2308480A1 (de) * 1973-02-21 1974-08-22 Hans Viessmann Waermetauscher
FR2351361A1 (fr) * 1976-05-14 1977-12-09 Brapal Sa Procede de chauffage par radiateurs electriques a eau
EP0921368A2 (de) * 1997-12-03 1999-06-09 Avilion Limited Modularer Handtuchhalter
WO2000070286A1 (en) * 1999-05-14 2000-11-23 Stefanini, Daniel Heat transfer system, particularly for use in the heating or cooling of buildings
EP1655546A1 (de) * 2003-12-09 2006-05-10 BORELLI Luigi Wärmegruppe für ein diathermisches Flüssigkeitsstrahlungselement
EP1884721A2 (de) * 2006-08-04 2008-02-06 DL RADIATORS S.p.A. Heizkörper zum Beheizen eines Raumes

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2098897A5 (de) * 1970-07-30 1972-03-10 Thomson Csf
DE2308480A1 (de) * 1973-02-21 1974-08-22 Hans Viessmann Waermetauscher
FR2351361A1 (fr) * 1976-05-14 1977-12-09 Brapal Sa Procede de chauffage par radiateurs electriques a eau
EP0921368A2 (de) * 1997-12-03 1999-06-09 Avilion Limited Modularer Handtuchhalter
WO2000070286A1 (en) * 1999-05-14 2000-11-23 Stefanini, Daniel Heat transfer system, particularly for use in the heating or cooling of buildings
EP1655546A1 (de) * 2003-12-09 2006-05-10 BORELLI Luigi Wärmegruppe für ein diathermisches Flüssigkeitsstrahlungselement
EP1884721A2 (de) * 2006-08-04 2008-02-06 DL RADIATORS S.p.A. Heizkörper zum Beheizen eines Raumes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBL20110006A1 (it) * 2011-06-24 2012-12-25 Ferroli Spa Radiatore elettrico a colonna, con alimentazione a due o piu' resistanze verticali
EP2538151A3 (de) * 2011-06-24 2013-08-07 FERROLI S.p.A. Elektrisches Säulenheizgerät mit Stromversorgung und zwei oder mehreren vertikalen Widerständen
EP3734164A1 (de) * 2019-04-24 2020-11-04 Vasco Group nv Elektrischer heizkörper
WO2021058846A1 (es) * 2019-09-23 2021-04-01 Comtec Iberica, S.L. Radiador eléctrico modular

Also Published As

Publication number Publication date
FR2945107A1 (fr) 2010-11-05
FR2945107B1 (fr) 2011-04-22

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