EP0797056B1 - Ölheizkörper, dessen Ränder eine niedrige Temperatur behalten - Google Patents

Ölheizkörper, dessen Ränder eine niedrige Temperatur behalten Download PDF

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Publication number
EP0797056B1
EP0797056B1 EP19970830127 EP97830127A EP0797056B1 EP 0797056 B1 EP0797056 B1 EP 0797056B1 EP 19970830127 EP19970830127 EP 19970830127 EP 97830127 A EP97830127 A EP 97830127A EP 0797056 B1 EP0797056 B1 EP 0797056B1
Authority
EP
European Patent Office
Prior art keywords
louvers
radiant
baffle plates
radiant element
maintaining
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19970830127
Other languages
English (en)
French (fr)
Other versions
EP0797056A3 (de
EP0797056A2 (de
Inventor
Giuseppe Arra'
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.)
Laminox - Srl
Original Assignee
Laminox - Srl
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 Laminox - Srl filed Critical Laminox - Srl
Publication of EP0797056A2 publication Critical patent/EP0797056A2/de
Publication of EP0797056A3 publication Critical patent/EP0797056A3/de
Application granted granted Critical
Publication of EP0797056B1 publication Critical patent/EP0797056B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/002—Air heaters using electric energy supply
    • 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
    • F28D1/03—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 plate-like or laminated conduits
    • F28D1/0308—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other
    • F28D1/0325—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another
    • F28D1/0333—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another the plates having integrated connecting members
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0035—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for domestic or space heating, e.g. heating 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
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/10—Safety or protection arrangements; Arrangements for preventing malfunction for preventing overheating, e.g. heat shields

Definitions

  • This patent application concerns an oil radiator capable of maintaining a low temperature at its external borders.
  • Today oil radiators are commonly used to heat homes; a radiator of this type consists of a set of radiant metal elements containing diathermic oil which is heated by an electric heating element generally housed at the base of the radiator to diffuse the heat throughout the radiant metal structure.
  • the convective flow of the diathermic oil firstly heats the internal surface of the radiant elements and heat is subsequently transferred by conduction from the internal surfaces to the external surfaces of the elements.
  • the width of the radiant elements of the oil radiators was increased with respect to those of traditional elements and their vertical edges were then provided with an articulated series of bends in order to bring the dimensions of the radiant element to the same dimensions of traditional elements - in proximity of which the metal of the radiant element reaches a lower temperature.
  • a radiator of this type is described in US patent 3,104,701 in which, to improve the thermal exchange, the radiant elements are provided with small slots each having a projecting fin realised by partially cutting and bending the sheet plate with which the two half-shells forming each radiant element is realised.
  • These slots are in fact designed to isolate the external borders of each radiant element with respect to the channel in which the diathermic oil circulates, and which usually follows a vertical route and is generally positioned towards the centre of the radiant element.
  • thermal ribs interrupt the continuity of the material of the radiant element and greatly reduce the propagation of heat by conduction from the area of higher temperature (oil circuit) to the external edges of the radiant elements, namely those with which the user could accidentally touch.
  • this solution aimed at concentrating the thermal exchange at the innermost section of the radiator thereby reducing the peripheral surface temperature.
  • the thermal exchange thus occurs mainly between the inner-most surface of the radiator and the ascending laminar flows of air which rise up the hollow space between one radiant element and another.
  • each radiant element not even the presence of the wide and numerous slots currently provided on each radiant element is capable of favouring the air exchange that flows through the hollow spaces in that these slots are lapped, both internally and externally, by identical uprising laminar air flows that - being such - do not spontaneously pass through the hollow spaces from the interior to the exterior and vice versa.
  • the purpose of this invention is to design a radiator, consisting of a set of radiant elements, capable of limiting the heat at its external edges while maintaining a better thermal efficiency with respect to the above mentioned prior models.
  • the inventive idea is to realise a radiator which, thanks to its particular structure is capable of guaranteeing a continuous exchange of ascending air flow on the walls of the radiant elements.
  • conveyor louvers show a profile bent from interior to exterior and are able to convey the air rising up said chambers to the exterior; alternatively the same may have a profile bent from exterior to interior and are able to convey the external air within said chambers.
  • Said louvers may be provided with a conveyor baffle plate projecting like a hood from the exterior of the radiant element, or a conveyor baffle plate concealed in the chamber.
  • each radiant element is provided with conveyor louvers bent from interior to exterior alternated with conveyor louvers bent from exterior to interior, it is obvious that most of the air entering said vertical chambers will escape immediately without reaching the mentioned bleed louvers provided at the top of the radiant element.
  • louvers will cause a continuous and turbulent mixing of the air in said chambers and the external air, resulting in a substantial exchange of the internal ascending flows, thus increasing the thermal exchange.
  • each radiant element may be positioned specifically according to the function of the movement of the turbulent outward-inward flows, as may be required from time to time.
  • a symmetrical series of conveyor louvers could be realised on the two sides of the radiant element: in other words one series of louvers with an exterior - interior conveyor baffle plate will correspond to a series of identical conveyor louvers on the other side of the radiant element.
  • louvers - on both sides of the same radiant element - so that one series of conveyor louvers bent from exterior to interior corresponds to a series of conveyor louvers bent from interior to exterior on the other side of the same radiant element.
  • the latter solution ensures outward-inward-outward air flows capable of passing the radiant element in an oblique direction and with a sinusoidal flow in that the air entering from a louver bent from exterior to interior on one side of the radiant element tends to escape from the other side of the same element, in proximity of the louver bent from interior to exterior at a level higher than that of the entry louver.
  • this oblique and sinusoidal movement of the air flows may be used advantageously even on the radiant element model in question without convex vertical chambers.
  • the conveyor baffle plates provided in proximity of one of the sides of this particular radiant element can intercept and deviate the bottom-top air flow that circulates over the same; while the conveyor baffle plates provided on the other side favour the upward expulsion of the air intercepted by the series of opposed louvers.
  • the high thermal exchange obtained within each radiant element also makes it possible to obtain a lower operating temperature of the oil inside the relative circuit and, thus, a lower surface temperature even in the inner-most areas of the metallic structure of the radiator.
  • the radiant element (1) is of the type designed for assembly adjacent to identical elements in order to make up a radiator; the same generally consists of a tank (2) housing diathermic oil heated by an electric heating element.
  • Said radiant element (1) consists of two joining identical shells (3), having an almost rectangular base, with two large holes - one positioned towards the bottom and the other towards the top - designed to house the hubs (4) which permit the assembly of several adjacent radiant elements (1).
  • the sides of the bottom hole are provided with two mouths (5) for the entry of air into the two air chambers realised in radiator (1).
  • Each of the shells (3) comprises a conventional central protrusion along almost its entire height, to form - when two shells are joined together - the tank (2) for the diathermic oil.
  • each shell (3) is provided with a canal, having a semielliptical cross-section (6), obtained by drawing, which extends along its vertical sides and top horizontal side.
  • Numerous ventilation louvers (7) are provided along the vertical section (6a) and along the horizontal section (6b) of this canal.
  • Said louvers defining slots which are long and narrow so that it is possible to define their longitudinal axis, namely that along the length of the slot, as well as their transverse axis, namely that across the width of the slot.
  • louver slot being arranged orthogonally with respect to the longitudinal axis of the canal (6), so that their direction is horizontal along the vertical sections (6a) and vertical along the horizontal section (6b).
  • a radiant element (1) is formed, the same being provided, in proximity of the vertical edges with two parallel vertical chambers joined at the top by a horizontal chamber, the same being provided with louvers (7) on both sides.
  • the radiant element (1) is provided with louvers (7) having outward projecting conveyor baffle plates; in particular, one side of the vertical section (6a) of chamber (6) is provided with conveyor baffle plates bent from exterior to interior, while, the opposite side is provided with conveyor baffle plates bent from interior to exterior.
  • louvers provided on the horizontal section (6b) of the chamber have conveyor baffle plates bent from interior to exterior projecting outwards.
  • the radiant element (1) operates in the same way as the previous embodiment, with the difference that the louvers (7) are provided with baffle plates - which are again staggered between the two sides of the chambers - but fitted and concealed inside the chambers.
  • the radiant element (1) in question is provided on all the sides of the vertical sections (6a) of the chambers, with louvers (7) having baffle plates bent from interior to exterior, fitted and concealed in said chambers.
  • louvers provided on the horizontal section (6b) of the chambers have conveyor baffle plates bent from interior to exterior fitted and concealed towards the interior of the chambers.
  • the radiant element in question is provided, on all the sides of the vertical sections (6a) of the chambers, with louvers (7) bent from exterior to interior projecting outwards like hoods.
  • louvers provided on the horizontal section (6b) of the chambers are provided with conveyor baffle plates bent from interior to exterior fitted and concealed towards the interior of the chambers.
  • the radiant element in question (1) is provided, on each side of the vertical sections (6a) of the chambers (6), with a series of alternating louvers (7) having projecting baffle plates and louvers having concealed baffle plates.
  • louvers provided on the horizontal section (6b) of the chambers are again provided with conveyor baffle plates bent from interior to exterior fitted and concealed towards the interior of the above chambers.
  • the radiant element in question (1) is provided, in a more external position than the oil circuit (2), with two flat vertical sections and a flat horizontal section, on which louvers (7) with longitudinal axis orthogonal direction with respect to the longitudinal axis of said flat sections, are realised.
  • louvers realised on one of the sides of the flat vertical section are provided with projecting baffle plates bent from exterior to interior, while the louvers realised on the opposing side of the corresponding vertical flat section have projecting baffle plates bent from interior to exterior.
  • the louvers provided on the horizontal section (6b) of the chambers are provided with conveyor baffle plates bent from interior to exterior projecting outside the above chambers.

Landscapes

  • 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)
  • Air-Flow Control Members (AREA)
  • Housing For Livestock And Birds (AREA)
  • Central Heating Systems (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (4)

  1. Öl-Radiator, dessen Außenränder auf einer gemäßigten Temperatur gehalten werden können, ausgestattet mit einer Serie von aneinandergefügten Heizelementen (1), die jeweils aus der Verbindung von zwei identischen Schalen (3) von beinahe rechteckigem Grundriß bestehen und zwei große Öffnungen zum Einstecken der Naben (4) sowie eine zentrale Ausbuchtung (2) aufweisen, die zur Zirkulation des Öls dient, dadurch gekennzeichnet, daß jedes der besagten Heizelemente (1) an den Seiten und oberhalb seines Ölkreislaufs (2) eine Serie von langen, schmalen Belüftungsschlitzen (7) besitzt, die jeweils mit Leitblech-Zwischenwänden (7a) versehen sind, wobei die Längsachse dieser Schlitze rechtwinklig zum daran anliegenden Abschnitt des Außenrandes des entsprechenden Heizelementes (1) angeordnet ist, wobei die besagte Serie von Schlitzen (7) mit Leitblech-Zwischenwänden (7a) sich auf der Wand eines Kanals (6) befindet, der durch Tiefziehen einer jeden Schale (3) der Heizelemente (1) geschaffen und an den senkrechten Seiten sowie der oberen waagrechten Seite der Schale (3) entlanggeführt wird.
  2. Öl-Radiator, dessen Außenränder auf einer gemäßigten Temperatur gehalten werden können gemäß Anspruch 1, dadurch gekennzeichnet, daß die Zwischenwände (7a) der oben genannten, auf den Heizelementen (1) vorgesehenen Schlitze (7) wahlweise oder abwechselnd von innen nach außen oder umgekehrt gebogen sind.
  3. Öl-Radiator, dessen Außenränder auf einer gemäßigten Temperatur gehalten werden können gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Leitblech-Zwischenwände (7a) der auf den Heizelementen (1) vorgesehenen Schlitze (7) ein, bezogen auf die Wände des Heizelementes (1), überstehendes Profil aufweisen.
  4. Öl-Radiator, dessen Außenränder auf einer gemäßigten Temperatur gehalten werden können gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Leitblech-Zwischenwände (7a) der auf den Heizelementen (1) vorgesehenen Schlitze (7) auf der Unterseite der Schlitze (7) verdeckt angebracht sind.
EP19970830127 1996-03-22 1997-03-20 Ölheizkörper, dessen Ränder eine niedrige Temperatur behalten Expired - Lifetime EP0797056B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMC960011U 1996-03-22
ITMC960011 IT241445Y1 (it) 1996-03-22 1996-03-22 Radiatore ad olio capace di mantenere i propri bordi esterni aridotta temperatura

Publications (3)

Publication Number Publication Date
EP0797056A2 EP0797056A2 (de) 1997-09-24
EP0797056A3 EP0797056A3 (de) 1997-11-05
EP0797056B1 true EP0797056B1 (de) 1999-06-23

Family

ID=11357134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970830127 Expired - Lifetime EP0797056B1 (de) 1996-03-22 1997-03-20 Ölheizkörper, dessen Ränder eine niedrige Temperatur behalten

Country Status (3)

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EP (1) EP0797056B1 (de)
DE (1) DE69700285T2 (de)
IT (1) IT241445Y1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BG64716B1 (bg) 2002-12-13 2005-12-30 "Фикосота" Оод Ребро и блок за радиатор
DE102004040949B4 (de) * 2004-08-24 2007-05-31 Gessner, Hans-Jürgen Radiator mit verbesserter Wärmeübertragung
ITUD20070242A1 (it) * 2007-12-21 2009-06-22 De Longhi Spa Modulo radiante per un'apparecchiatura di riscaldamento e relativo procedimento per realizzare tale modulo radiante
JP6906130B2 (ja) * 2016-10-21 2021-07-21 パナソニックＩｐマネジメント株式会社 熱交換器およびそれを用いた冷凍システム
JP2019531451A (ja) * 2016-10-28 2019-10-31 広東美的環境電器制造有限公司 オイルヒータ
FR3067446B1 (fr) * 2017-06-09 2019-09-20 Atlantic Industrie Element de radiateur a fluide caloporteur et radiateur forme par assemblage de tels elements

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3104701A (en) * 1956-01-18 1963-09-24 Olin Mathieson Heat exchanger
US3150250A (en) * 1962-11-29 1964-09-22 Internat Oil Burner Company Sheet metal electrical baseboard heater
FR1524182A (fr) * 1967-02-24 1968-05-10 Rubanox Soc Perfectionnements aux échangeurs thermiques à ailettes
IT226255Z2 (it) * 1992-02-18 1997-06-02 Miralfin Srl Struttura di radiatore particolarmente per il riscaldamento di locali
AT401969B (de) * 1994-04-11 1997-01-27 Heller Reinhard Ing Radiator, insbesondere mobiler raumheizradiator
AU2710995A (en) * 1994-07-28 1996-02-08 Dimplex (Uk) Limited Oil-filled column radiator
IT236601Y1 (it) * 1995-01-20 2000-08-17 Miralfin Srl Struttura di radiatore particolarmente per il riscaldamentodi locali

Also Published As

Publication number Publication date
DE69700285T2 (de) 2000-02-24
ITMC960011U1 (it) 1997-09-22
EP0797056A3 (de) 1997-11-05
DE69700285D1 (de) 1999-07-29
IT241445Y1 (it) 2001-05-09
EP0797056A2 (de) 1997-09-24

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