EP1217302B1 - Radiant heating device with rotary heat head - Google Patents

Radiant heating device with rotary heat head Download PDF

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Publication number
EP1217302B1
EP1217302B1 EP01420237A EP01420237A EP1217302B1 EP 1217302 B1 EP1217302 B1 EP 1217302B1 EP 01420237 A EP01420237 A EP 01420237A EP 01420237 A EP01420237 A EP 01420237A EP 1217302 B1 EP1217302 B1 EP 1217302B1
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EP
European Patent Office
Prior art keywords
heating device
burner
radiant heating
tube
base
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Expired - Lifetime
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EP01420237A
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German (de)
French (fr)
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EP1217302A1 (en
Inventor
Marc Champion
Bruno Cursoux
Alain Huguet
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Application des Gaz SA
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Application des Gaz SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C1/00—Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of the following groups F24C3/00 - F24C9/00; Stoves or ranges in which the type of fuel or energy supply is not specified
    • F24C1/08—Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of the following groups F24C3/00 - F24C9/00; Stoves or ranges in which the type of fuel or energy supply is not specified solely adapted for radiation heating
    • F24C1/10—Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of the following groups F24C3/00 - F24C9/00; Stoves or ranges in which the type of fuel or energy supply is not specified solely adapted for radiation heating with reflectors
    • F24C1/12—Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of the following groups F24C3/00 - F24C9/00; Stoves or ranges in which the type of fuel or energy supply is not specified solely adapted for radiation heating with reflectors of circular shape

Definitions

  • the present invention relates to the general technical field radiant heating devices intended in particular for use outside.
  • These radiant heating devices allow for example to heat a localized and well-defined area, for example around a table.
  • Document FR-A-2 764 677 discloses a radiant heating device intended for outdoor use according to the preamble of claim 1.
  • a first object of the invention is to provide a device radiant heater which optimizes the distribution of radiation thermal.
  • Another object of the present invention is to improve the performance of a radiant heating device and in particular with regard to radiated thermal energy losses.
  • An additional aim of the present invention is to provide lighting associated with radiant heating.
  • the device radiant heater includes a gas lighting lamp, mounted on the upper base, facing the burner secured to the thermal reflector.
  • the radiant heating device according to the invention shown in Figure 1 includes a base 2 under which are fixed rollers 4 facilitating the movement of the heating device.
  • the base 2 is surmounted by a removable cover 6 making it possible to hide the location of a gas supply source such as gas cylinder.
  • a tube 8 is fixed on the base 2 and extends vertically towards the top of the radiant heater.
  • the tube 8 is telescopic and for this purpose comprises a tube interior 8a, an upper tube 8b and a locking nut 10 of the sliding of the upper tube 8b relative to the lower tube 8a.
  • An upper base 12 is mounted on the upper end of the tube 8, in this case the upper tube 8b, and comprises a first tap 14 and a second tap 16 controlling the operation of the device heating.
  • the latter also includes a lighting lamp 18 operating on gas and mounted on the upper base 12.
  • the lamp lighting 18 is surmounted by a heat shield 20.
  • Two arms 22 integral with the upper base 12 extend symmetrically upwards from the latter.
  • the radiant heating device comprises also a heating sub-assembly comprising in particular a thermal reflector 30 and a gas burner 40 integral with said reflector thermal 30.
  • the gas burner 40 is a burner operating for example at pressures of the order of 28 mbar.
  • the latter is articulated on the arms 22 by means of articulations at axis 24.
  • the gas burner 40 is advantageously protected by a grid of protection 50 so as to avoid any accidental contact with said burner gas 40.
  • the heating subassembly thus comprising the burner 40 fixed on the thermal reflector 30 is capable of being pivoted about an axis horizontal defined by the articulations with axis 24 and maintained in a angular position determined by blocking means. These latter are for example made with self-locking axis 24 joints.
  • the thermal reflector 30 has a concave shape delimiting a internal space in which the gas burner 40 is fixed and centered.
  • the shape concave of the thermal reflector 30 is for example a shape parabolic.
  • the radiant heater also has a conduit gas supply not shown, one end of which is connected to the burner 40 via an injector 42 and a burner tube 44; and whose other end is intended to be connected to the gas supply source, of the gas cylinder type.
  • the gas supply duct is arranged at least for part in the tube 8 and in one of the arms 22.
  • the burner tube 44 advantageously extends partly outside the reflector thermal 30 and is protected by a cover 32 whose constituent material withstands high temperatures.
  • the first 14 and second 16 tap control are advantageously mounted on a control box 17 integrated in the upper base 2.
  • the gas supply conduit integrated in the tube 8 is thus connected to the control unit 17 using a tip 17a and a connecting tube 17b.
  • the gas supply duct then extends to the inside of an arm 22 as far as a through nozzle nozzle 44 the thermal reflector 30.
  • the corresponding pivot 24 is also designed with a passage 25 allowing the gas supply duct to extend up to the nozzle holder nozzle 43 ( Figures 2 and 3).
  • the protective grid 50 is fixed by any means and in particular using fixing rods 51 inside the reflector thermal 30.
  • the burner tube 44 extending partly outside the thermal reflector 30, passes through the latter substantially at its center to open into the burner 40.
  • the radiant heater shown in Figure 4 includes a helical spring 9 extending inside the lower tube 8a and the upper tube 8b, and in support at each of its ends on said tube lower 8a and said upper tube 8b so as to be compressed by a retraction of the upper tube 8b into the lower tube 8a.
  • the spring 9 thus makes it possible to absorb the fall of the upper tube 8b supporting the upper base 12, the lamp 18, the thermal reflector 30 and the burner 40 in the event of accidental loosening of the locking nut 10, and it facilitates the lifting of the upper tube 8b.
  • the thermal reflector 30 is also provided with orifices of flue gases distributed symmetrically around the opening for the passage of the burner tube 44.
  • the heat shield 20 ( Figure 2) is mounted on the lamp 18 to using elastic parts 19, facing the burner 40 secured to the reflector thermal screen 30.
  • the thermal screen 20 is for example made up of a metal plate.
  • the lamp 18 has internally a burner complementary 18a and an ignition electrode 18b.
  • the lamp 18 also has a protective glass 18c held on the base upper 12 using complementary elastic parts 19a.
  • the control box 17 is provided with a switch safety 17a allowing the gas supply to be cut off automatically in the event of a fall or tilting of the heating device at least 30 ° radiant ( Figure 5).
  • the radiant heating device is shown partially and in section in FIG. 3 which shows the pivot 24 in greater detail.
  • the latter is consisting of the end 22a of the arm 22 and a complementary part 26 secured to the heat shield 30.
  • the end 22a of the arm 22 and the part 26 are capable of pivoting with respect to one another according to a horizontal axis materialized by a screw 27.
  • the latter crosses a part of the part 26 and the end 22a of the arm 22.
  • the screw 27 is mounted on the end 22a and is associated with a clamping spring 28. Screw 27 is tightened with a nut self-locking 27a.
  • the support of the clamping spring 28 between the head of the screw 27 and an internal wall 26b of the part 26) as well as the support of the nut self-locking 27a on the end 22a makes it possible to obtain a degree of tightening, and therefore a variable pivoting ease of the reflector thermal 30 relative to arm 22.
  • An opening 26a is provided in the part 26 so as to allow the gas supply conduit to pass through passage 25 and said opening 26a whatever the angular orientation position of the thermal reflector 30 relative to arm 22.
  • the pivot 24 forms a self-locking articulation.
  • the burner 40 is for example fixed under the reflector thermal 30 using spacers 45 and corresponding screws 45a, which pass through the wall of the thermal reflector 30.
  • the burner 40 is thus optimally positioned in the volume delimited by the reflector thermal 30.
  • the burner 40 as shown in Figure 6 has a upper cup 46 circular, having a central recess 46a.
  • the latter defines a substantially horizontal fixing plate 46b, provided with a feed opening 46c traversed by the end 44a of the burner tube 44.
  • the end 44a of the burner tube 44 passes through preferably the upper cup 46 so as to better distribute the combustion in the burner 40.
  • the latter is provided near its end with a collar 44b bearing on the fixing plate 46b and allowing a fixing by crimping the burner tube 44 on the upper cup 46.
  • the upper cup 46 also has an edge folded peripheral 46d.
  • the burner 40 also includes a grid inner 47 frustoconical, the large base of which is closed by the cup upper, said inner grid 47 being fixed under said cup upper 46 and its small base being produced by a cup lower 49.
  • Attaching the inner grid 47 to the upper cup 46 is done for example by crimping the folded edge 46d.
  • the interior grille 47 also has a dropped edge allowing it to be fixed on the lower cup, for example using welding spots.
  • the burner 40 further comprises a frustoconical external grid 48 whose large base is open and has a spacing with the upper cup 46 of so as to provide a smoke extraction slot 40a between the two grids 47, 48.
  • the slot 40a allows better evacuation of the fumes and combustion is thus optimized.
  • the small base of the external grid 48 is produced by the constituent material of the outer grid 48 and has a larger diameter larger than that of the small base of the inner grid 47.
  • the substantially flat lower cup 49 extends over the face interior of the small base of the exterior grid 48 and makes the connection mechanical between the two grids 47 and 48, for example via of solder points.
  • the lower cup 49 also makes it possible to create a screen by the burner 40.
  • the lower cup 49 makes it possible to focus the maximum thermal radiation on the side faces of grids 47 and 48.
  • the interior 47 and exterior 48 grids have faces corresponding lateral or frustoconical 47a 48a whose spacing is between 5 mm and 8 mm.
  • the internal grid 47 reaches a temperature of 800 ° to 850 ° C so as to radiate energy thermal.
  • the external grid 48 makes it possible to channel the fumes from combustion and reflect some of the heat radiation on the grid interior 47, thereby increasing the temperature of said interior grid 47.
  • the spacing between the inner grid 47 and the inner grid 48 allows thus optimizing combustion hygiene on the one hand and radiation thermal on the other hand.
  • the frustoconical faces 47a 48a can present a variable spacing between them when moving along said frustoconical faces 47a and 48a, so as to improve the homogenization of the temperature of said grids.
  • the external grid 48 is made with a metal deployed by example in stainless steel whose permeability is respectively between 45% and 55%.
  • the inner grid 47 is made with a sheet perforated by example in stainless steel whose permeability is between 15% and 25%.
  • the burner 40 is also associated with a device ignition 60 comprising in particular an electrode 61 ( Figure 3).
  • Figure 4 shows in dashed lines for example a position additional for the thermal reflector 30.
  • a handling handle 33 is provided on the reflector thermal 30 for this purpose.
  • the thermal reflector 30 is for example made of aluminum, polished on the reflective side.
  • the shape of the thermal reflector 30, associated with the construction of the gas burner 40 directs the thermal radiation towards a annular zone extending around a so-called "cold" cone of approximately 40 ° and the top of which would be in the center of the gas burner 40.
  • the heated annular zone can be delimited externally by a 110 ° cone, the apex of which is in the center of the burner 40. From this 110 ° cone, subtract the 40 ° "cold" cone defined above.
  • the radiant heating device placed near a table allows to heat an area where people are seated, then that a central area, for example the table and what rests on it, is less heated.
  • the radiant heating device thus makes it possible to heat selectively certain privileged areas compared to others.
  • the distribution of thermal radiation is further improved by the orientation of the thermal reflector 30.
  • the heat shield 20 contributes to obtaining a central cold zone, previously defined as a cone.
  • the upper cup 46 and the lower cup 49 have a diameter of 246 mm and 84 mm respectively, and a mutual spacing of 62 mm.
  • a radiating surface is then obtained, constituted by the frustoconical face 47a of 520 cm 2 .

Abstract

The heater consists of a gas burner (40) with a heat reflector (30) supported by a tube (8) mounted on a base (2) with a cover (6) for a gas bottle. It has an upper support (12) on the top of the tube, equipped with radial arms (22) which extend upwards and have pivots (24) for the reflector. The burner is fixed to the inner concave surface of the reflector so that the two form a sub-assembly able to turn on the axis of the pivots (24) and held in the required position by a self-locking system. The reflector has outlets for the fumes from the burner.

Description

La présente invention se rapporte au domaine technique général des dispositifs chauffants radiants destinés notamment à un usage extérieur.The present invention relates to the general technical field radiant heating devices intended in particular for use outside.

Ces dispositifs chauffants radiants permettent par exemple de chauffer une zone localisée et bien délimitée, par exemple autour d'une table.These radiant heating devices allow for example to heat a localized and well-defined area, for example around a table.

Le document FR-A-2 764 677 divulgue un dispositif chauffant radiant destiné à un usage extérieur selon le préambule de la revendication 1.Document FR-A-2 764 677 discloses a radiant heating device intended for outdoor use according to the preamble of claim 1.

L'inconvénient de tels dispositifs chauffants radiants réside souvent dans l'impossibilité d'adapter ou d'optimiser le rayonnement thermique et notamment pour des utilisations particulières liées par exemple à l'environnement ou à des obstacles au voisinage du dispositif chauffant radiant.The downside of such radiant heaters is often unable to adapt or optimize radiation thermal and in particular for particular uses linked by example to the environment or to obstacles in the vicinity of the device radiant heater.

Un premier but de l'invention est de réaliser un dispositif chauffant radiant lequel permet d'optimiser la répartition du rayonnement thermique.A first object of the invention is to provide a device radiant heater which optimizes the distribution of radiation thermal.

Un autre but de la présente invention est d'améliorer les performances d'un dispositif chauffant radiant et notamment vis-à-vis des déperditions d'énergie thermique rayonnée.Another object of the present invention is to improve the performance of a radiant heating device and in particular with regard to radiated thermal energy losses.

Un but complémentaire de la présente invention est de fournir un éclairage associé au chauffage radiant.An additional aim of the present invention is to provide lighting associated with radiant heating.

Selon l'invention, le dispositif chauffant radiant comporte :

  • une base supérieure montée sur l'extrémité supérieure du tube,
  • deux bras s'étendant vers le haut à partir de la base supérieure sur lesquels est articulé le réflecteur thermique à l'aide de pivots,
  • le brûleur étant fixé sur le réflecteur thermique de manière à constituer un sous-ensemble susceptible d'être pivoté autour d'un axe horizontal défini par lesdits pivots, et maintenu dans une position angulaire déterminée grâce à des moyens de blocage.
According to the invention, the radiant heating device comprises:
  • an upper base mounted on the upper end of the tube,
  • two arms extending upwards from the upper base on which the thermal reflector is articulated by means of pivots,
  • the burner being fixed on the thermal reflector so as to constitute a sub-assembly capable of being pivoted about a horizontal axis defined by said pivots, and maintained in a determined angular position thanks to locking means.

Selon un mode de réalisation de l'invention, le dispositif chauffant radiant comporte une lampe d'éclairage à gaz, montée sur la base supérieure, en regard du brûleur solidaire du réflecteur thermique.According to one embodiment of the invention, the device radiant heater includes a gas lighting lamp, mounted on the upper base, facing the burner secured to the thermal reflector.

Selon un mode de réalisation du dispositif chauffant radiant conforme à l'invention, le brûleur comporte :

  • une coupelle supérieure circulaire, présentant une ouverture d'alimentation centrée,
  • une grille intérieure tronconique dont la grande base est refermée par la coupelle supérieure, ladite grille intérieure étant fixée sous ladite coupelle supérieure, et dont la petite base est réalisée par une coupelle inférieure,
  • une grille extérieure tronconique dont la grande base ouverte présente un écartement avec la coupelle supérieure de manière à ménager une fente d'extraction de fumées entre les deux grilles, et dont la petite base réalisée par le matériau constitutif de la grille extérieure, présente un diamètre plus grand que celui de la petite base de la grille intérieure
  • la coupelle inférieure étant sensiblement plane, s'étendant sur la face intérieure de la petite base de la grille extérieure, et réalisant la liaison mécanique entre les deux grilles.
According to one embodiment of the radiant heating device according to the invention, the burner comprises:
  • a circular upper cup, having a centered feed opening,
  • a frustoconical inner grid, the large base of which is closed by the upper cup, the said inner grid being fixed under the said upper cup, and the small base of which is produced by a lower cup,
  • a frustoconical external grid, the large open base of which has a spacing with the upper cup so as to provide a smoke extraction slot between the two grids, and the small base of which is made of the material constituting the external grid, has a diameter larger than that of the small base of the inner grid
  • the lower cup being substantially planar, extending over the inner face of the small base of the outer grid, and making the mechanical connection between the two grids.

D'autres caractéristiques et avantages ressortiront également de la description détaillée donnée ci-après, à titre d'exemple non limitatif, en référence aux dessins annexés, dans lesquels :

  • la figure 1 est une vue d'ensemble du dispositif chauffant radiant conforme à l'invention
  • la figure 2 est une vue en coupe de la partie supérieure de la figure 1
  • la figure 3 est une vue partielle en coupe d'un détail de la figure 2
  • la figure 4 est une vue partielle en coupe selon la ligne IV-IV du dispositif chauffant radiant représenté sur la figure 1
  • la figure 5 représente un détail agrandi de la figure 4
  • la figure 6 représente de façon agrandie une coupe du brûleur du dispositif chauffant radiant conforme à l'invention.
Other characteristics and advantages will also emerge from the detailed description given below, by way of nonlimiting example, with reference to the appended drawings, in which:
  • Figure 1 is an overview of the radiant heating device according to the invention
  • Figure 2 is a sectional view of the upper part of Figure 1
  • Figure 3 is a partial sectional view of a detail of Figure 2
  • Figure 4 is a partial sectional view along line IV-IV of the radiant heating device shown in Figure 1
  • Figure 5 shows an enlarged detail of Figure 4
  • Figure 6 shows an enlarged section of the burner of the radiant heating device according to the invention.

Le dispositif chauffant radiant conforme à l'invention représenté à la figure 1, comprend un socle 2 sous lequel sont fixées des roulettes 4 facilitant le déplacement du dispositif chauffant.The radiant heating device according to the invention shown in Figure 1, includes a base 2 under which are fixed rollers 4 facilitating the movement of the heating device.

Le socle 2 est surmonté d'un cache 6 amovible permettant de masquer l'emplacement d'une source d'alimentation en gaz du type bouteille de gaz.The base 2 is surmounted by a removable cover 6 making it possible to hide the location of a gas supply source such as gas cylinder.

Un tube 8 est fixé sur le socle 2 et s'étend verticalement vers le haut du dispositif chauffant radiant.A tube 8 is fixed on the base 2 and extends vertically towards the top of the radiant heater.

Le tube 8 est télescopique et comporte à cet effet un tube intérieur 8a, un tube supérieur 8b et un écrou de blocage 10 du coulissement du tube supérieur 8b par rapport au tube inférieur 8a.The tube 8 is telescopic and for this purpose comprises a tube interior 8a, an upper tube 8b and a locking nut 10 of the sliding of the upper tube 8b relative to the lower tube 8a.

Une base supérieure 12 est montée sur l'extrémité supérieure du tube 8, en l'occurrence le tube supérieur 8b, et comporte un premier robinet 14 et un second robinet 16 pilotant le fonctionnement du dispositif chauffant.An upper base 12 is mounted on the upper end of the tube 8, in this case the upper tube 8b, and comprises a first tap 14 and a second tap 16 controlling the operation of the device heating.

Ce dernier comporte également une lampe d'éclairage 18 fonctionnant au gaz et montée sur la base supérieure 12. La lampe d'éclairage 18 est surmontée d'un écran thermique 20. Deux bras 22 solidaires de la base supérieure 12 s'étendent symétriquement vers le haut à partir de cette dernière.The latter also includes a lighting lamp 18 operating on gas and mounted on the upper base 12. The lamp lighting 18 is surmounted by a heat shield 20. Two arms 22 integral with the upper base 12 extend symmetrically upwards from the latter.

Le dispositif chauffant radiant conforme à l'invention comporte également un sous-ensemble chauffant comprenant notamment un réflecteur thermique 30 et un brûleur à gaz 40 solidaire dudit réflecteur thermique 30.The radiant heating device according to the invention comprises also a heating sub-assembly comprising in particular a thermal reflector 30 and a gas burner 40 integral with said reflector thermal 30.

Le brûleur à gaz 40 est un brûleur fonctionnant par exemple à des pressions de l'ordre de 28 mbars.The gas burner 40 is a burner operating for example at pressures of the order of 28 mbar.

Ce dernier est articulé sur les bras 22 à l'aide d'articulations à axe 24. Le brûleur à gaz 40 est avantageusement protégé par une grille de protection 50 de manière à éviter tout contact accidentel avec ledit brûleur à gaz 40.The latter is articulated on the arms 22 by means of articulations at axis 24. The gas burner 40 is advantageously protected by a grid of protection 50 so as to avoid any accidental contact with said burner gas 40.

Le sous-ensemble chauffant comprenant ainsi le brûleur 40 fixé sur le réflecteur thermique 30 est susceptible d'être pivoté autour d'un axe horizontal défini par les articulations à axe 24 et maintenu dans une position angulaire déterminée grâce à des moyens de blocage. Ces derniers sont par exemple réalisés avec des articulations à axe 24 autobloquantes. The heating subassembly thus comprising the burner 40 fixed on the thermal reflector 30 is capable of being pivoted about an axis horizontal defined by the articulations with axis 24 and maintained in a angular position determined by blocking means. These latter are for example made with self-locking axis 24 joints.

Le réflecteur thermique 30 a une forme concave délimitant un espace interne dans lequel est fixé et centré le brûleur à gaz 40. La forme concave du réflecteur thermique 30 est par exemple une forme parabolique. Le dispositif chauffant radiant comporte également un conduit d'alimentation en gaz non représenté dont l'une des extrémités est reliée au brûleur 40 via un injecteur 42 et un tube de brûleur 44; et dont l'autre extrémité est destinée à être connectée sur la source d'alimentation en gaz, du type bouteille à gaz.The thermal reflector 30 has a concave shape delimiting a internal space in which the gas burner 40 is fixed and centered. The shape concave of the thermal reflector 30 is for example a shape parabolic. The radiant heater also has a conduit gas supply not shown, one end of which is connected to the burner 40 via an injector 42 and a burner tube 44; and whose other end is intended to be connected to the gas supply source, of the gas cylinder type.

Le conduit d'alimentation en gaz est disposé au moins pour partie dans le tube 8 et dans l'un des bras 22. Le tube de brûleur 44 s'étend avantageusement pour partie à l'extérieur du réflecteur thermique 30 et est protégé par un capot 32 dont le matériau constitutif résiste à des températures élevées. Les premier 14 et second 16 robinet de commande sont avantageusement montés sur un boítier de commande 17 intégré dans la base supérieure 2.The gas supply duct is arranged at least for part in the tube 8 and in one of the arms 22. The burner tube 44 advantageously extends partly outside the reflector thermal 30 and is protected by a cover 32 whose constituent material withstands high temperatures. The first 14 and second 16 tap control are advantageously mounted on a control box 17 integrated in the upper base 2.

Le conduit d'alimentation en gaz intégré dans le tube 8 est ainsi connecté sur le boítier de commande 17 à l'aide d'un embout 17a et d'un tube de liaison 17b. Le conduit d'alimentation en gaz s'étend ensuite à l'intérieur d'un bras 22 jusque vers un embout porte-injecteur 44 traversant le réflecteur thermique 30.The gas supply conduit integrated in the tube 8 is thus connected to the control unit 17 using a tip 17a and a connecting tube 17b. The gas supply duct then extends to the inside of an arm 22 as far as a through nozzle nozzle 44 the thermal reflector 30.

Le pivot 24 correspondant est également conçu avec un passage 25 permettant au conduit d'alimentation en gaz de s'étendre jusque vers l'embout porte-injecteur 43 (figures 2 et 3).The corresponding pivot 24 is also designed with a passage 25 allowing the gas supply duct to extend up to the nozzle holder nozzle 43 (Figures 2 and 3).

La grille de protection 50 est fixée par tout moyen et notamment à l'aide de tiges de fixation 51 à l'intérieur du réflecteur thermique 30.The protective grid 50 is fixed by any means and in particular using fixing rods 51 inside the reflector thermal 30.

Le tube de brûleur 44, s'étendant en partie à l'extérieur du réflecteur thermique 30, traverse ce dernier sensiblement en son centre pour déboucher dans le brûleur 40.The burner tube 44, extending partly outside the thermal reflector 30, passes through the latter substantially at its center to open into the burner 40.

Le dispositif chauffant radiant représenté à la figure 4 comporte un ressort hélicoïdal 9 s'étendant à l'intérieur du tube inférieur 8a et du tube supérieur 8b, et en appui à chacune de ses extrémités sur ledit tube inférieur 8a et ledit tube supérieur 8b de manière à être comprimé par une rétraction du tube supérieur 8b dans le tube inférieur 8a.The radiant heater shown in Figure 4 includes a helical spring 9 extending inside the lower tube 8a and the upper tube 8b, and in support at each of its ends on said tube lower 8a and said upper tube 8b so as to be compressed by a retraction of the upper tube 8b into the lower tube 8a.

Le ressort 9 permet ainsi d'amortir la chute du tube supérieur 8b supportant la base supérieure 12, la lampe 18, le réflecteur thermique 30 et le brûleur 40 en cas de desserrage accidentel de l'écrou de blocage 10, et il facilite la levée du tube supérieur 8b.The spring 9 thus makes it possible to absorb the fall of the upper tube 8b supporting the upper base 12, the lamp 18, the thermal reflector 30 and the burner 40 in the event of accidental loosening of the locking nut 10, and it facilitates the lifting of the upper tube 8b.

Le réflecteur thermique 30 est également pourvu d'orifices d'évacuation de fumées de combustion réparties symétriquement autour de l'ouverture de passage du tube de brûleur 44.The thermal reflector 30 is also provided with orifices of flue gases distributed symmetrically around the opening for the passage of the burner tube 44.

L'évacuation de telles fumées de combustion permet d'éviter leur aspiration à l'intérieur du brûleur 40 et de ne pas altérer le fonctionnement ou les performances dudit brûleur 40.The evacuation of such combustion fumes makes it possible to avoid their suction inside the burner 40 and not to alter the operation or performance of said burner 40.

L'écran thermique 20 (figure 2) est monté sur la lampe 18 à l'aide de pièces élastique 19, en regard du brûleur 40 solidaire du réflecteur thermique 30. L'écran thermique 20 est par exemple constitué d'une plaque métallique.The heat shield 20 (Figure 2) is mounted on the lamp 18 to using elastic parts 19, facing the burner 40 secured to the reflector thermal screen 30. The thermal screen 20 is for example made up of a metal plate.

La lampe 18 comporte intérieurement un brûleur complémentaire 18a et une électrode d'allumage 18b. La lampe 18 comporte également un verre protecteur 18c maintenu sur la base supérieure 12 à l'aide de pièces élastiques complémentaires 19a.The lamp 18 has internally a burner complementary 18a and an ignition electrode 18b. The lamp 18 also has a protective glass 18c held on the base upper 12 using complementary elastic parts 19a.

Le boítier de commande 17 est pourvu d'un interrupteur de sécurité 17a permettant de couper automatiquement l'alimentation en gaz en cas de chute ou un basculement d'au moins 30° du dispositif chauffant radiant (figure 5).The control box 17 is provided with a switch safety 17a allowing the gas supply to be cut off automatically in the event of a fall or tilting of the heating device at least 30 ° radiant (Figure 5).

Le dispositif chauffant radiant est représenté partiellement et en coupe à la figure 3 qui montre plus en détail le pivot 24. Ce dernier est constitué de l'extrémité 22a du bras 22 et d'une pièce complémentaire 26 solidaire de l'écran thermique 30. L'extrémité 22a du bras 22 et la pièce 26 sont susceptibles de pivoter l'une par rapport à l'autre selon un axe horizontal matérialisé par une vis 27. Cette dernière traverse une partie de la pièce 26 et l'extrémité 22a du bras 22.The radiant heating device is shown partially and in section in FIG. 3 which shows the pivot 24 in greater detail. The latter is consisting of the end 22a of the arm 22 and a complementary part 26 secured to the heat shield 30. The end 22a of the arm 22 and the part 26 are capable of pivoting with respect to one another according to a horizontal axis materialized by a screw 27. The latter crosses a part of the part 26 and the end 22a of the arm 22.

La vis 27 est montée sur l'extrémité 22a et est associée à un ressort de serrage 28. La vis 27 est serrée à l'aide d'un écrou autoblocant 27a. L'appui du ressort de serrage 28 entre la tête de la vis 27 et une paroi interne 26b de la pièce 26) ainsi que l'appui de l'écrou autoblocant 27a sur l'extrémité 22a permet d'obtenir un degré de serrage, et par conséquent une facilité de pivotement variable du réflecteur thermique 30 par rapport au bras 22.The screw 27 is mounted on the end 22a and is associated with a clamping spring 28. Screw 27 is tightened with a nut self-locking 27a. The support of the clamping spring 28 between the head of the screw 27 and an internal wall 26b of the part 26) as well as the support of the nut self-locking 27a on the end 22a makes it possible to obtain a degree of tightening, and therefore a variable pivoting ease of the reflector thermal 30 relative to arm 22.

Une ouverture 26a est prévue dans la pièce 26 de manière à permettre au conduit d'alimentation en gaz de traverser le passage 25 et ladite ouverture 26a quelle que soit la position angulaire d'orientation du réflecteur thermique 30 par rapport au bras 22.An opening 26a is provided in the part 26 so as to allow the gas supply conduit to pass through passage 25 and said opening 26a whatever the angular orientation position of the thermal reflector 30 relative to arm 22.

Le pivot 24 forme une articulation autobloquante.The pivot 24 forms a self-locking articulation.

Le brûleur 40 représenté de façon agrandie à la figure 6 est décrit en détail ci-après.The burner 40 shown enlarged in Figure 6 is described in detail below.

Le brûleur 40 est par exemple fixé sous le réflecteur thermique 30 à l'aide d'entretoises 45 et de vis correspondantes 45a, lesquelles traversent la paroi du réflecteur thermique 30. Le brûleur 40 est ainsi positionné de façon optimale dans le volume délimité par le réflecteur thermique 30.The burner 40 is for example fixed under the reflector thermal 30 using spacers 45 and corresponding screws 45a, which pass through the wall of the thermal reflector 30. The burner 40 is thus optimally positioned in the volume delimited by the reflector thermal 30.

Le brûleur 40 tel que représenté à la figure 6 comporte une coupelle supérieure 46 circulaire, présentant un renfoncement central 46a. Ce dernier définit une plaque de fixation 46b sensiblement horizontale, pourvue d'une ouverture d'alimentation 46c traversée par l'extrémité 44a du tube de brûleur 44. L'extrémité 44a du tube de brûleur 44 traverse de préférence la coupelle supérieure 46 de manière à mieux répartir la combustion dans le brûleur 40.The burner 40 as shown in Figure 6 has a upper cup 46 circular, having a central recess 46a. The latter defines a substantially horizontal fixing plate 46b, provided with a feed opening 46c traversed by the end 44a of the burner tube 44. The end 44a of the burner tube 44 passes through preferably the upper cup 46 so as to better distribute the combustion in the burner 40.

Ce dernier est pourvu au voisinage de son extrémité d'un collet 44b prenant appui sur la plaque de fixation 46b et permettant une fixation par sertissage du tube de brûleur 44 sur la coupelle supérieure 46.The latter is provided near its end with a collar 44b bearing on the fixing plate 46b and allowing a fixing by crimping the burner tube 44 on the upper cup 46.

La coupelle supérieure 46 présente également un bord replié 46d périphérique. Le brûleur 40 comporte également une grille intérieure 47 tronconique dont la grande base est refermée par la coupelle supérieure, ladite grille intérieure 47 étant fixée sous ladite coupelle supérieure 46 et sa petite base étant réalisée par une coupelle inférieure 49.The upper cup 46 also has an edge folded peripheral 46d. The burner 40 also includes a grid inner 47 frustoconical, the large base of which is closed by the cup upper, said inner grid 47 being fixed under said cup upper 46 and its small base being produced by a cup lower 49.

La fixation de la grille intérieure 47 sur la coupelle supérieure 46 se fait par exemple par sertissage du bord replié 46d. La grille intérieure 47 présente également un bord tombé lui permettant d'être fixée sur la coupelle inférieure par exemple à l'aide de points de soudure. Le brûleur 40 comporte encore une grille extérieure 48 tronconique dont la grande base est ouverte et présente un écartement avec la coupelle supérieure 46 de manière à ménager une fente 40a d'extraction de fumées entre les deux grilles 47, 48. La fente 40a permet une meilleure évacuation des fumées et la combustion est ainsi optimisée. Attaching the inner grid 47 to the upper cup 46 is done for example by crimping the folded edge 46d. The interior grille 47 also has a dropped edge allowing it to be fixed on the lower cup, for example using welding spots. The burner 40 further comprises a frustoconical external grid 48 whose large base is open and has a spacing with the upper cup 46 of so as to provide a smoke extraction slot 40a between the two grids 47, 48. The slot 40a allows better evacuation of the fumes and combustion is thus optimized.

La petite base de la grille extérieure 48 est réalisée par le matériau constitutif de la grille extérieure 48 et présente un diamètre plus grand que celui de la petite base de la grille intérieure 47.The small base of the external grid 48 is produced by the constituent material of the outer grid 48 and has a larger diameter larger than that of the small base of the inner grid 47.

La coupelle inférieure 49 sensiblement plane s'étend sur la face intérieure de la petite base de la grille extérieure 48 et réalise la liaison mécanique entre les deux grilles 47 et 48, par exemple par l'intermédiaire de points de soudure. La coupelle inférieure 49 permet également de réaliser un écran par le brûleur 40. La coupelle inférieure 49 permet de focaliser le maximum de rayonnement thermique sur les faces latérales des grilles 47 et 48.The substantially flat lower cup 49 extends over the face interior of the small base of the exterior grid 48 and makes the connection mechanical between the two grids 47 and 48, for example via of solder points. The lower cup 49 also makes it possible to create a screen by the burner 40. The lower cup 49 makes it possible to focus the maximum thermal radiation on the side faces of grids 47 and 48.

Les grilles intérieure 47 et extérieure 48 présentent des faces latérales ou tronconiques correspondantes 47a 48a dont l'écartement est compris entre 5 mm et 8 mm. En fonctionnement la grille intérieure 47 atteint une température de 800° à 850°C de manière à rayonner l'énergie thermique. La grille extérieure 48 permet de canaliser les fumées de combustion et de réfléchir une partie du rayonnement thermique sur la grille intérieure 47, augmentant ainsi la température de ladite grille intérieure 47. L'écartement entre la grille intérieure 47 et la grille intérieure 48 permet ainsi d'optimiser l'hygiène de combustion d'une part et le rayonnement thermique d'autre part.The interior 47 and exterior 48 grids have faces corresponding lateral or frustoconical 47a 48a whose spacing is between 5 mm and 8 mm. In operation the internal grid 47 reaches a temperature of 800 ° to 850 ° C so as to radiate energy thermal. The external grid 48 makes it possible to channel the fumes from combustion and reflect some of the heat radiation on the grid interior 47, thereby increasing the temperature of said interior grid 47. The spacing between the inner grid 47 and the inner grid 48 allows thus optimizing combustion hygiene on the one hand and radiation thermal on the other hand.

Avantageusement, les faces tronconiques 47a 48a peuvent présenter entre elles un écartement variable lorsqu'on se déplace le long desdites faces tronconiques 47a et 48a, de manière à améliorer l'homogénéisation de la température desdites grilles.Advantageously, the frustoconical faces 47a 48a can present a variable spacing between them when moving along said frustoconical faces 47a and 48a, so as to improve the homogenization of the temperature of said grids.

La grille extérieure 48 est réalisée avec un métal déployé par exemple en inox dont la perméabilité est comprise respectivement entre 45% et 55%. La grille intérieure 47 est réalisée avec une tôle perforée par exemple en inox dont la perméabilité est comprise entre 15 % et 25 %.The external grid 48 is made with a metal deployed by example in stainless steel whose permeability is respectively between 45% and 55%. The inner grid 47 is made with a sheet perforated by example in stainless steel whose permeability is between 15% and 25%.

Le brûleur 40 est également associé à un dispositif d'allumage 60 comprenant notamment une électrode 61 (figure 3).The burner 40 is also associated with a device ignition 60 comprising in particular an electrode 61 (Figure 3).

La figure 4 montre en traits mixtes par exemple une position complémentaire pour le réflecteur thermique 30.Figure 4 shows in dashed lines for example a position additional for the thermal reflector 30.

Une poignée de manipulation 33 est prévue sur le réflecteur thermique 30 à cet effet. Le réflecteur thermique 30 est par exemple réalisé avec de l'aluminium, poli sur le côté réfléchissant. A handling handle 33 is provided on the reflector thermal 30 for this purpose. The thermal reflector 30 is for example made of aluminum, polished on the reflective side.

La forme du réflecteur thermique 30, associée à la construction du brûleur à gaz 40 permet de diriger le rayonnement thermique vers une zone annulaire s'étendant autour d'un cône dit "froid" d'environ 40° et dont le sommet serait au centre du brûleur à gaz 40.The shape of the thermal reflector 30, associated with the construction of the gas burner 40 directs the thermal radiation towards a annular zone extending around a so-called "cold" cone of approximately 40 ° and the top of which would be in the center of the gas burner 40.

A titre d'exemple, la zone annulaire chauffée peut être délimitée extérieurement par un cône de 110°, dont le sommet est au centre du brûleur 40. A ce cône de 110° il faut soustraire le cône dit "froid" de 40° défini ci-dessus.For example, the heated annular zone can be delimited externally by a 110 ° cone, the apex of which is in the center of the burner 40. From this 110 ° cone, subtract the 40 ° "cold" cone defined above.

Le dispositif chauffant radiant, disposé à proximité d'une table permet ainsi de chauffer une zone où sont assises des personnes, alors qu'une zone centrale, par exemple la table et ce qui y repose, est moins chauffée. Le dispositif chauffant radiant permet ainsi de chauffer sélectivement certaines zones privilégiées par rapport à d'autres.The radiant heating device, placed near a table allows to heat an area where people are seated, then that a central area, for example the table and what rests on it, is less heated. The radiant heating device thus makes it possible to heat selectively certain privileged areas compared to others.

La répartition du rayonnement thermique est en outre améliorée par l'orientation du réflecteur thermique 30.The distribution of thermal radiation is further improved by the orientation of the thermal reflector 30.

Le cône dit "froid", correspondant à une zone centrale non ou très peu chauffée permet également d'éviter un échauffement trop important de la lampe d'éclairage 18.The cone called "cold", corresponding to a central zone not or very little heating also prevents overheating important of the lighting lamp 18.

En outre, lorsque le réflecteur thermique 30 est dans une position sensiblement horizontale, l'écran thermique 20 contribue à l'obtention d'une zone froide centrale, définie précédemment comme un cône.In addition, when the thermal reflector 30 is in a substantially horizontal position, the heat shield 20 contributes to obtaining a central cold zone, previously defined as a cone.

Selon un exemple de réalisation du brûleur 40, la coupelle supérieure 46 et la coupelle inférieure 49 présentent respectivement un diamètre de 246 mm et 84 mm, et un écartement mutuel de 62 mm. On obtient alors une surface rayonnante, constituée par la face tronconique 47a de 520 cm2.According to an exemplary embodiment of the burner 40, the upper cup 46 and the lower cup 49 have a diameter of 246 mm and 84 mm respectively, and a mutual spacing of 62 mm. A radiating surface is then obtained, constituted by the frustoconical face 47a of 520 cm 2 .

Claims (18)

  1. Radiant heating device intended for outdoor use, having:
    a gas burner (40),
    a heat reflector (30) associated with the burner (40),
    a tube (8) mounted on a base (2) and supporting the burner (40) and the heat reflector (30),
    a gas supply conduit, one end of which is connected to the burner (40) via an injector (42) and a burner tube (44), and the other end of which is intended to be connected to a supply of the gas-cylinder type, the said conduit being arranged at least partly in the tube (8),
    an upper base (12) mounted on the upper end of the tube (8),
    characterised in that it has:
    two arms (22) which extend upwards from the upper base (12) and on which the heat reflector (30) is articulated with the aid of pivots (24),
    the burner (40) being fixed to the heat reflector (30) so as to form a subassembly capable of being pivoted about a horizontal axis defined by the said pivots (24), and held, in a given angular position, by virtue of locking means.
  2. Radiant heating device according to Claim 1, characterised in that the locking means are embodied by self-locking pivots (24).
  3. Radiant heating device according to Claim 1 or 2, characterised in that the heat reflector (30) has a concave shape delimiting an inner space in which the burner (40) is fixed and centred.
  4. Radiant heating device according to any one of Claims 1 to 3, characterised in that the heat reflector (30) has, in a centred manner, orifices for discharging combustion fumes.
  5. Radiant heating device according to any one of Claims 1 to 4, characterised in that the gas supply conduit extends partly inside one of the arms (22).
  6. Radiant heating device according to any one of Claims 1 to 5, characterised in that it has a lighting lamp (18) operating on gas and mounted on the upper base (12).
  7. Radiant heating device according to Claim 6, characterised in that the lighting lamp (18) is surmounted by a heat screen (20).
  8. Radiant heating device according to Claim 7, characterised in that the heat screen (20) is mounted on the lamp (18) opposite the burner (40), which is itself attached to the heat reflector (30).
  9. Radiant heating device according to any one of Claims 6 to 8, characterised in that it has a first (14) and a second (16) control tap allowing the burner (40) and the lighting lamp (18), respectively, to be supplied with gas, the said taps (14, 16) being arranged on the upper base (12).
  10. Radiant heating device according to any one of Claims 1 to 9, characterised in that the tube (8) is telescopic, and to this end has a lower tube (8a), an upper tube (8b) and a nut (10) for blocking the sliding of the upper tube (8b) with respect to the lower tube (8a).
  11. Radiant heating device according to Claim 10, characterised in that it has a helical spring (9) extending inside the lower tube (8a) and the upper tube (8b), the said spring (9) being compressed by the retraction of the upper tube (8b) in the lower tube (8a).
  12. Radiant heating device according to any one of Claims 1 to 11, characterised in that one of the pivots (24) has a passage (25) for the gas supply conduit, which passes through the heat reflector (30) in order to be mounted on an injector-carrying end piece (43), which is itself connected to the burner by the burner tube (44).
  13. Radiant heating device according to Claim 12, characterised in that the burner tube (44) extends outside the heat reflector (30) and passes through the latter substantially at its centre to open into the burner (40).
  14. Radiant heating device according to any one of Claims 1 to 13, characterised in that the burner (40) has:
    a circular upper dish (46), having a centred supply opening (46c),
    a frustoconical inner grate (47), the large base of which is closed by the upper dish (46), the said inner grate (47) being fixed under the said upper dish (46), and the small base of which is embodied by a lower dish (49),
    a frustoconical outer grate (48), the open large base of which has a spacing with respect to the upper dish (46) so as to form a slot (40a) for extracting fumes between the two grates (47, 48), and the small base of which, produced from the material of which the outer grate (48) is composed, has a larger diameter than that of the small base of the inner grate (47),
    the lower dish (49) being substantially plane, extending on the inner face of the small base of the outer grate (48), and forming the mechanical connection between the two grates (47, 48).
  15. Radiant heating device according to Claim 14, characterised in that the respective frustoconical faces of the outer (48) and inner (47) grates have corresponding frustoconical faces (48a, 47a), the spacing of which is between 5 mm and 8 mm.
  16. Radiant heating device according to Claim 15, characterised in that the frustoconical faces (47a, 48a) have a spacing between them which is variable when moving along the said faces (47a, 48a) from a large base towards a small base or vice versa.
  17. Radiant heating device according to any one of Claims 14 to 16, characterised in that the outer (48) and inner (47) grates have respectively a permeability of respectively between 45% and 55% for the outer grate (48), and between 15% and 25% for the inner grate (47).
  18. , Radiant heating device according to any one of Claims 14 to 17, characterised in that the upper dish (46) has a central reinforcement (46a), in which the supply opening (46c) is formed.
EP01420237A 2000-12-22 2001-12-18 Radiant heating device with rotary heat head Expired - Lifetime EP1217302B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0016987 2000-12-22
FR0016987A FR2818735B1 (en) 2000-12-22 2000-12-22 RADIANT HEATING DEVICE HAVING AN ORIENTABLE HEATING HEAD

Publications (2)

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EP1217302A1 EP1217302A1 (en) 2002-06-26
EP1217302B1 true EP1217302B1 (en) 2004-09-15

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EP01420237A Expired - Lifetime EP1217302B1 (en) 2000-12-22 2001-12-18 Radiant heating device with rotary heat head

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EP (1) EP1217302B1 (en)
AT (1) ATE276487T1 (en)
DE (1) DE60105535T2 (en)
FR (1) FR2818735B1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2379500B (en) * 2000-12-06 2005-07-20 David Bell Outdoor heater fixing and mounting assembly
ITVR20010059U1 (en) * 2001-11-13 2003-05-13 Cristini Matteo RADIATOR PARTICULARLY FOR HEATING OUTDOOR ENVIRONMENTS.
ITMI20030457A1 (en) * 2003-03-11 2004-09-12 Skg Italia S P A IMPROVED HEATING HEAD FOR A STOVE.
DE102004034148B4 (en) * 2004-07-15 2006-05-18 F. Polzer Gmbh Gas powered patio heater has a tilting cowl mounting with the tilt axis held between two clamping plates
CN200996650Y (en) * 2007-01-23 2007-12-26 金卫东 Telescopic eccentric movable outdoor radiater
AU2009251306A1 (en) * 2008-05-29 2009-12-03 Bechtold Fleming Designs, Llc Patio heater double dome infrared heat reflector/converter
EP2157355A1 (en) * 2008-08-21 2010-02-24 Snord Design, Lda. Lightspot- An innovative gas appliance concept for a new lighting solution
DE102008051318A1 (en) * 2008-10-11 2010-04-15 Sim-Tex Gmbh Covering hood for gas-radiant heater in e.g. area, has multiple glass mat components e.g. outer casing and inner casing, consisting of fiber glass with thickness of specific value, where fixing collar is attached with covering hood
US8776777B2 (en) * 2011-07-13 2014-07-15 Weidong Jin Gas heater with visible flame guider
WO2021110112A1 (en) * 2019-12-04 2021-06-10 罗朝译 Warmer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2764677B1 (en) * 1997-06-16 1999-09-03 Jean Collet TERRACE HEATING DEVICE
US5964233A (en) * 1998-08-12 1999-10-12 Clark; Walter B Patio umbrella with radiant heater

Also Published As

Publication number Publication date
FR2818735B1 (en) 2003-02-14
DE60105535D1 (en) 2004-10-21
DE60105535T2 (en) 2005-01-27
ATE276487T1 (en) 2004-10-15
EP1217302A1 (en) 2002-06-26
FR2818735A1 (en) 2002-06-28

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