EP3081863B1 - Élément chauffant à rayons infrarouges portable pour chauffage ambiant - Google Patents

Élément chauffant à rayons infrarouges portable pour chauffage ambiant Download PDF

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Publication number
EP3081863B1
EP3081863B1 EP16159556.6A EP16159556A EP3081863B1 EP 3081863 B1 EP3081863 B1 EP 3081863B1 EP 16159556 A EP16159556 A EP 16159556A EP 3081863 B1 EP3081863 B1 EP 3081863B1
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EP
European Patent Office
Prior art keywords
header
burner
bearing means
hollow body
central chamber
Prior art date
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Application number
EP16159556.6A
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German (de)
English (en)
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EP3081863A1 (fr
Inventor
Pier Luigi Tenci
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.)
La Rude Srl
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La Rude Srl
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Classifications

    • 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
    • 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
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/002—Stoves

Definitions

  • the present invention relates to the technical field of infrared heat generators, and more particularly the invention relates to a portable infrared ray header for environmental heating.
  • the infrared heat generators are particularly important, and among these the more advantageous ones are gas-fired.
  • the heat generated by gas combustion is usually converted into infrared radiation by means of a mineral fiber of amorphous silica having high degree of purity, generally greater than 99%, the fiber being associated with the radiating means.
  • a heat generator of this type is described, for example, in the European Patent EP 2 577 165 in the name of the same Applicant.
  • the afore said Patent describes a heat generator comprising a vertically-arranged body delimiting a central chamber having an inlet at the base and a radial outlet; a burner for the combustion of a gas, placed on the base of the hollow body for the emission of combustion gases into the central chamber; a plurality of holes flush with the inlet of the central chamber for an inflow of combustive air and for mixing with the combustion gases coming from the burner and directed towards the radial outlet of the hollow body; radiating means interposed between the inlet and the outlet of the central chamber; as well as a base having wheels mounted thereto in order to move the heat generator and which supports a bell for containing a gas bottle having in turn a hollow column mounted thereon in order to bear the burner and to accommodate the components of the heat generator.
  • the burner is basically inside the inlet provided in the base of the central chamber and that, in use, the flame generated in the burner substantially extends inside the central chamber.
  • the heat generators of the above described type are intended to be used mainly in working environments such as, for example, warehouses, or quite large common areas, such as workshops and bar verandas, whereas their domestic use, for example at home, is limited.
  • Document US 4,452,225 A discloses a portable auxiliary radiant chimney effect heater, including an inverted conical chimney placed over and heated to the infrared spectrum by an open flame such as that provided by the burner of an otherwise conventional cooking stove, in which the chimney is surrounded by a semi-parabolic reflector.
  • Patent US2005/175950 A1 discloses a heating apparatus including a heating head and a burner assembly for igniting fuel from a fuel source, in which the heating head has a dual-walled construction to form several flue chambers that can be substantially isolated from each other and configured to generate turbulent gas flow therein for maximum heat transfer to the outer wall.
  • the technical problem underlying the present invention was to provide an infrared heat generator for heating the environment, having structural and functional characteristics such to overcome the drawbacks mentioned above with reference to the known technique, that is to say a heat generator of the above said type having limited overall dimensions, particularly to be used in domestic, household environment, not only being movable but also easily transportable, therefore portable and particularly cost-effective.
  • an infrared ray header for environmental heating without its own burner but able to be coupled to any gas burner of a stovetop, particularly a domestic one, is provided.
  • the header according to the present invention is small-overall sized and is particularly suitable to be used in small spaces, such as precisely a house kitchen, since it does not require to be arranged in a special space, because a space portion above any gas-stove top can be exploited.
  • This header results to be advantageously cost-effective, as well as easy to be handled and, in particular, not only movable but also easy to be transported and thus portable, due to the fact that it is unprovided with its own burner as well as with respective components.
  • the afore said bearing means are made of athermic material, i.e. a material not transmitting heat, and advantageously are made of refractory steel.
  • the afore said bearing means comprise a plurality of feet.
  • the afore said header comprises a connecting element having essentially an annular shape, extended between the afore said plurality of feet and constrained thereto.
  • the afore said bearing means therefore preferably the afore said feet, have extent, i.e. a projection from the afore said base, comprised between 30 mm and 60 mm, more preferably comprised between 35 mm and 55 mm, and still more preferably comprised between 40 mm and 50 mm.
  • the width of the afore said main inlet is greater than or equal to about 135 mm.
  • the afore said header comprises an essentially net-shaped protecting element outside of the afore said side wall and, therefore, outside the afore said layer of amorphous silica fiber, the protecting element being preferably removably associated with the afore said hollow body.
  • the afore said header comprises at least one handle for the transportation thereof, which is preferably arranged at the afore said top wall and which is more preferably associated with the afore said protecting element.
  • a portable infrared ray header for environmental heating according to the present invention is denoted on the whole.
  • the header 1 comprises basically a hollow body 2 delimiting a central chamber 3 , having a base 4 provided with a main inlet 5 , a top wall 6 and an at least partially gas-permeable side wall 7 extended from the base 4 to the top wall 6.
  • the hollow body 2 is illustrated as having a substantially vertical arrangement and, in particular, a cylindrical shape although other shapes, such as spherical or polyhedral, can be provided.
  • the header 1 comprises, at the side wall 7 , radiating means basically comprising a layer of amorphous silica fiber with high degree of purity, generally denoted with numeral 8 , in which the silica content is at least equal to or even greater than 99%.
  • Such a material is usually known as quartz silica.
  • the amorphous silica fiber has density comprised between 90 g/m 2 and 120 g/m 2 per unit area and is essentially composed of elongated fibers with diameter comprised between 2 micrometers and 13 micrometers.
  • the header 1 is apt to be coupled to a gas stove top, being unprovided with its own burner and the respective components for supplying gas to the burner.
  • the header 1 comprises bearing means, globally denoted with the numeral 9 , for supporting the hollow body 2 on a domestic stovetop 10 comprising a burner 11 , at a predetermined limited distance therefrom.
  • a flame 12 is produced by combustion of a supplying gas, the flame also being substantially outside of the central chamber 3 , whereas the relative emission of hot combustion gases occurs in the central chamber 3 , as shown in the example of figure 2 by the arrows inside the central chamber 3.
  • the bearing means 9 are associated with the base 4 of the hollow body 2 and, advantageously, are basically arranged around the main inlet 5 of the hollow body 2 .
  • the bearing means 9 may take the shape of a plurality of feet, each referred to as 13 , advantageously made of athermic material, preferably of refractory steel.
  • the bearing means 9 are further provided with a plurality of through holes 14.
  • This provides the required distance between the central chamber of the header and the stovetop coupled thereto, thereby allowing the burner, and therefore the flame, to receive the needed air flow for the combustion of supplied gas, as depicted in the example of figure 2 by the arrows outside the central chamber.
  • the maximum temperature point is outside the header, in particular out of the central chamber and just before the main inlet of the hollow body.
  • the bearing means made of refractory, perforated and athermic steel and having a predetermined limited length, in particular extending preferably between 30 mm and 60 mm, more preferably between 35 mm and 55 mm, and still more preferably between 40 mm and 50 mm beyond the base, allow this header to be raised from the stovetop so that a proper air flow can access the burner, in order to optimize the flame combustion of the supplied gas, while obstacles found by the air grazing the stovetop and heat loss towards the latter are minimized.
  • the header 1 comprises a connecting element 15 of the bearing means 9 , in particular extended between the plurality of feet 13 and constrained thereto.
  • the connecting element 15 practically formed by a ring also preferably made of athermic material such as refractory steel, represents an element for stiffening and containing the feet 13 as well as for centering the header 1 with respect to the burner 11.
  • the main inlet 5 of the hollow body 2 which advantageously is circle-shaped, has length greater than or equal to about 135 mm, thereby allowing the present header to be coupled to burners having power up to 3,2 kW and flame spreaders similarly having diameter up to 135 mm.
  • the header 1 may comprise an advantageously net-shaped protecting element 16 outside the layer of amorphous silica fiber 8 and the side wall 7 , advantageously removably associated with the hollow body 2 and having in particular its lower portion associated with the base 4 and its upper portion with the top wall 6 of the hollow body 2 by means of a tightening wing nut 17.
  • the outer portion of the side wall of the hollow body is easy to be accessed in order to clean the present header, in particular to remove from the outer portion of the side wall 7 possible sulphate and/or carbonate residues which can be originated by the combustion of the supplying gas, in particular if methane is used.
  • the header 1 may comprise a handle 18 for the transportation thereof, the handle being arranged at the top wall 6 of the hollow body 2 according to the examples of the figures, although side handles can be also provided.
  • the handle 18 is also made of athermic material such as refractory steel, and is constrained to a top portion of the protecting element 16.
  • a thermally insulating layer generally referred to with numeral 19 , arranged at the top wall 6 of the hollow body 2 , together with specific insulating gaskets 20 arranged between the layer of amorphous silica fiber 8 and the top wall 6 , complete the header 1.
  • the side wall 7 of the hollow body 2 advantageously comprises a stretched double metal net, and precisely an inner net and an outer net, the layer of amorphous silica fiber 8 being comprised therebetween.
  • the double metal net having an open area of at least 85%, allows the flow of combustion gases to be maximized without significant pressure losses.
  • the header according to the present invention in practice ensures that carbon monoxide emissions are zero, or almost zero and, in any case, always considerably below the limits according to current regulations, thereby resulting in total safety for the user.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Claims (7)

  1. Tête de rayonnement infrarouge portable (1) pour chauffage d'appoint, comprenant:
    un corps creux (2) délimitant une chambre centrale (3), ayant une base (4) munie d'une entrée principale (5), une paroi supérieure (6) et une paroi latérale (7) au moins partiellement perméable aux gaz et s'étendant de ladite base (4) à ladite paroi supérieure (6),
    dans laquelle ladite tête est sans son propre brûleur, ladite tête étant apte à être couplée à un brûleur (11) pour la combustion d'un gaz et l'émission respective de gaz de combustion dans ladite chambre centrale (3), ledit brûleur étant à l'extérieur de ladite chambre centrale (3), ladite tête étant caractérisée en ce que la ladite paroi latérale (7) comprend des moyens de rayonnement pour le rayonnement infrarouge, comprenant une couche de fibres de silice amorphe (8) avec une teneur en silice égale ou supérieure à 99%; et en ce qu'elle comprend des moyens de support (9) pour supporter ledit corps creux (2) sur une cuisinière comprenant ledit brûleur, à une distance limitée prédéterminée de celui-ci, dans laquelle lesdits moyens de support (9) sont associés à ladite base (4) et sont essentiellement agencés autour de ladite entrée principale (5), et dans laquelle lesdits moyens de support (9) sont pourvus d'une pluralité de trous traversants (14).
  2. Tête selon la revendication 1, dans laquelle lesdits moyens de support (9) sont en acier réfractaire athermique.
  3. Tête selon la revendication 1 ou 2, dans laquelle lesdits moyens de support (9) comprennent une pluralité de pieds (13).
  4. Tête selon la revendication 3, comprenant un élément de connexion (15) ayant essentiellement une forme annulaire et s'étendant entre ladite pluralité de pieds (13) et contraint à ceux-ci.
  5. Tête selon l'une quelconque des revendications précédentes, dans laquelle lesdits moyens de support (9) ont une étendue à partir de ladite base comprise entre 30 mm et 60 mm, plus préférablement comprise entre 35 mm et 55 mm, et encore plus préférablement comprise entre 40 mm et 50 mm.
  6. Tête selon l'une quelconque des revendications précédentes, comprenant un élément de protection essentiellement en forme de filet (16) se trouvant à l'extérieur de ladite paroi latérale (7), dans laquelle l'élément de protection (16) est associé de manière amovible au dit corps creux (2).
  7. Tête selon l'une quelconque des revendications précédentes, comprenant au moins une poignée (18) pour le transport de ladite tête, dans laquelle ladite poignée (18) est préférablement agencée au niveau de ladite paroi supérieure (6).
EP16159556.6A 2015-03-13 2016-03-10 Élément chauffant à rayons infrarouges portable pour chauffage ambiant Active EP3081863B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITBS20150041 2015-03-13

Publications (2)

Publication Number Publication Date
EP3081863A1 EP3081863A1 (fr) 2016-10-19
EP3081863B1 true EP3081863B1 (fr) 2020-01-08

Family

ID=53177743

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16159556.6A Active EP3081863B1 (fr) 2015-03-13 2016-03-10 Élément chauffant à rayons infrarouges portable pour chauffage ambiant

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EP (1) EP3081863B1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2088280A (en) * 1937-07-27 Heating attachment fob stoves
FR585958A (fr) * 1923-11-13 1925-03-12 Quartz & Silice Appareil de chauffage
US2596329A (en) * 1947-11-10 1952-05-13 Egbert Ada Elizabeth Accessory heater device usable on cooking stove burner
US3509869A (en) * 1968-10-04 1970-05-05 Ernest L Woods Convector
US4452225A (en) * 1983-06-14 1984-06-05 Plant David F Portable, auxiliary, radiant chimney effect heater
US7086396B2 (en) * 2004-02-11 2006-08-08 Michael Waters Heating apparatus
IT1400045B1 (it) 2010-05-25 2013-05-17 Rude Srl Dispositivo per un riscaldamento ambientale a raggi infrarossi.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3081863A1 (fr) 2016-10-19

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