EP3795904B1 - Foyer artificiel - Google Patents

Foyer artificiel Download PDF

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Publication number
EP3795904B1
EP3795904B1 EP20184882.7A EP20184882A EP3795904B1 EP 3795904 B1 EP3795904 B1 EP 3795904B1 EP 20184882 A EP20184882 A EP 20184882A EP 3795904 B1 EP3795904 B1 EP 3795904B1
Authority
EP
European Patent Office
Prior art keywords
enclosure
artificial
embers
bed
fireplace
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.)
Active
Application number
EP20184882.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3795904A1 (fr
Inventor
Dominique Imbert
Laurent GABORIT
Christophe PLOYE
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.)
Atelier Dominique Imbert SAS
Original Assignee
Atelier Dominique Imbert SAS
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
Priority claimed from FR1910226A external-priority patent/FR3100872A1/fr
Application filed by Atelier Dominique Imbert SAS filed Critical Atelier Dominique Imbert SAS
Priority to JP2022517831A priority Critical patent/JP2023511638A/ja
Priority to CA3151508A priority patent/CA3151508A1/fr
Priority to PCT/EP2020/075875 priority patent/WO2021053019A1/fr
Priority to CN202080065155.7A priority patent/CN114450523B/zh
Priority to US17/761,493 priority patent/US11788696B2/en
Publication of EP3795904A1 publication Critical patent/EP3795904A1/fr
Application granted granted Critical
Publication of EP3795904B1 publication Critical patent/EP3795904B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/002—Stoves
    • F24C7/004—Stoves simulating flames
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D13/00—Electric heating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F21S10/04—Lighting devices or systems producing a varying lighting effect simulating flames
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/06—Casings, cover lids or ornamental panels, for radiators
    • F24D19/064—Coverings not directly attached to a radiator, e.g. box-like coverings
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/08—Electric heater

Definitions

  • the present invention belongs to the field of fireplaces, and more particularly to the field of decorative fireplaces. More specifically, the invention relates to the field of hearths, whether open or closed hearth fireplaces, stoves or even inserts.
  • the present invention relates to an artificial hearth integrated into a fireplace which preferably has a decorative character.
  • a fireplace comprises a hearth delimited by an enclosure inside which it is customary to light and maintain a fire whose calorific energy is diffused by radiation and/or conduction and/or convection to heat a room or a home.
  • fire can be produced using wood or other fuels, such as alcohol or gas.
  • fuels such as alcohol or gas.
  • fireplaces with electrical resistance heaters there are also fireplaces with electrical resistance heaters.
  • the particularity of a fireplace lies in the opening that it usually has in the front part of its peripheral wall, making it possible to make visible the embers and the animation of the flames of combustion of the wood. What is particularly pleasant to the sight of a user by contributing to a feeling of calm, warmth and well-being.
  • the objective consists, in this case, of procuring the above-mentioned sensations while disregarding the heating function which such a fireplace usually procures.
  • an artificial fireplace comprising a semi-reflecting plate inclined between 10° and 30° comprising a hologram representing a combustion hearth.
  • a light source illuminates the semi-reflecting plate from the front and from the top of the fireplace enclosure.
  • a play of light and optical reflection makes it possible to animate the flame of the hologram represented on the semi-reflecting plate.
  • Dummy fuel elements can also support the realism of the optical illusion by being arranged at the front and at the rear of the semi-reflecting plate.
  • an artificial fireplace comprising a hearth formed by an enclosure open in the front part, while in the lower part is arranged a bed of artificial embers.
  • a video screen broadcasting images of flames is arranged in this chamber of the hearth, at the rear of the bed of artificial embers, while a dichroic mirror extends to the front of this screen and above the bed of artificial embers with an angle of inclination of 45°.
  • a screen broadcasting a hearth background image is provided under the upper wall of the enclosure. This image is reflected on the dichroic mirror by merging it, above and at the level of the bed of embers, with the images of flames diffused by the video screen.
  • the hearth is characterized in that the projection means are configured to emit, according to an incident ray, images, in particular of animated flames through a linear polarized light, the display screen being defined by a transparent glass plate which extends between the dummy ember bed and the projection means, the transparent plate forming with respect to the incident ray an angle of between 50° and 56°.
  • the advantages resulting from the present invention consist of a spectacular impression of realism of the wood fire which an observer located in front of the opening of the enclosure of the hearth can see.
  • This result is obtained by implementing technical means of simple design.
  • These means are capable of delivering a holographic image of perfect clarity resulting, on the one hand, from the use of a display screen, and on the other hand, from means for projecting a flame image according to a beam of linear polarized light emitted at an angle corresponding to Brewster's law.
  • the projection means are located under the upper wall of the enclosure.
  • the projection means are thus hidden from the line of sight of an observer.
  • the display screen is arranged in the enclosure, on the one hand, between the projection means and the dummy ember bed, and on the other hand, in the extension of the opening at a determined angle with respect to the bottom of the enclosure.
  • the transparent glass plate comprises at its rear face, visible through the opening of the enclosure, an antireflection treatment.
  • the transparent glass plate is held in the enclosure by means of a structure support in the form of a console resting on this bottom by defining a screen at the rear of the dummy ember bed.
  • the transparent glass plate is configured to be fitted to the walls of the enclosure. This contributes to masking the presence of a display screen vis-à-vis an observer.
  • the artificial hearth is equipped with means of sound diffusion and/or olfactory emissions.
  • the artificial hearth comprises lighting means configured to diffuse ambient light in the enclosure. This characteristic helps to reinforce the impression of realism.
  • the bed of embers is composed of various elements imitating a combination of wood in the process of combustion, embers and ashes in materials chosen to partially reveal light radiation produced by means of lighting installed under this bed of embers, in the form of LEDs capable of being subjected to a variation in light intensity to simulate the animation of real incandescent embers.
  • the artificial hearth is rotatably mounted around a vertical axis through suspension means, such as a dummy flue, or a support base.
  • This fireplace or stove is characterized by that it comprises a dummy flue incorporating heating means, preferably of the electric type with dry inertia.
  • the present invention relates to an artificial hearth 1, for a fireplace, insert or stove, comprising an enclosure 2 delimited by a lower wall 3, an upper wall 4 and a peripheral wall 5.
  • this hearth 1 can take different embodiments.
  • the bottom 3 and top 4 wall like the peripheral wall 5, can be more or less concave so as to give this focus 1 a noticeable spherical shape.
  • the different walls 3, 4, 5 being continuous with each other.
  • the lower wall 3 and the peripheral wall 5 give the hearth an extended oblate shape surmounted by a cone formed by the upper wall 4.
  • the lower wall 3 of the hearth 1 the one coming to close the latter in its lower part.
  • the upper wall 4 covers the enclosure 2 of the hearth 1.
  • the peripheral wall 5 corresponds to the envelope laterally surrounding this enclosure 2.
  • this peripheral wall 5 includes an opening 6 providing a line of sight 7 from inside the enclosure 2 of the hearth 1.
  • the opening 6 corresponds to a mouth which has an ovoid shape and matches the curvature of the peripheral wall 5.
  • the central part 60 of the opening 6 extends at the level of a plane P or in front of this plane P More precisely, the upper central part 60 extends at the level of the plane P. As for the lower central part 60, it extends in this example, in front of the plane P. This is illustrated in figure 2 , the plane P being tangent to the curvature of the peripheral wall 5.
  • the side edges 61 of the opening 6 are set back from the plane P. This specific configuration of the opening 6 contributes to reducing parasitic reflections which come from outside enclosure 2.
  • the lower wall 3 of the hearth 1 defines the bottom 8 of the enclosure.
  • the artificial fireplace 1 comprises on the bottom 8 of the enclosure a dummy ember bed 9.
  • the dummy ember bed 9 is arranged in the line of sight 7.
  • the projection means 10 are configured to emit linear polarized light. As an indication, it is possible to use an LCD type video screen for this purpose. In all cases, according to the invention, the projection means 10 are configured to project an image of animated flames in the direction of a display screen 11.
  • the artificial hearth 1 comprises a display screen 11 which is placed in the enclosure 2.
  • the display screen 11 is placed in the line of vision 7 of an observer 12 located in front of the opening 6 of artificial hearth 1.
  • these projection means 10 are located under the upper wall 4 of the enclosure 2.
  • the projection means 10 are also defined to diffuse images, in particular of animated flames, through linear polarized light.
  • the configuration and the cooperation of the display screen 11 and the projection means 10 allow the formation of a virtual image in the line of vision 7.
  • this virtual image is form, on the line of vision 7, behind the display screen 11 at the level where the dummy ember bed 9 is arranged.
  • the display screen 11 it is arranged in the enclosure 2 between the projection means 10 and the dummy ember bed 9 and in the extension of the opening 6.
  • the display screen 11 is defined by display optics.
  • the viewing optics is formed by a transparent plate 13.
  • this transparent plate 13 is formed from glass.
  • the transparent plate 13 can be considered as a diopter.
  • the transparent plate 13 is configured so that the projection means 10 emit linear polarized light according to the Brewster angle. A Fresnel reflection then occurs according to the Brewster angle. To this end, the transparent plate 13 is placed at an angle iB of between 50° and 56° with respect to the incident ray emitted by the projection means 10. This angle measurement corresponds to a so-called Brewster angle.
  • the projection of a linear polarized light on the transparent plate 13 according to the Brewster angle helps to eliminate the partial reflection which usually occurs when a light beam is emitted on an interface. This is because the refracted ray rB is perpendicular to the reflected ray 14a. However, according to this direction of refraction, the refracted light beam does not appear in the line of vision 7 of an observer, it is therefore not visible to the latter (illustrated in figure 3 ). The clarity of the virtual image which forms on the transparent plate 13 is thus optimized, thus increasing the impression of realism of the virtual image with an observer located on the line of vision 7.
  • the transparent plate 13 reflects an image in the direction of the line of vision 7 consisting of a single polarized component which is formed by the reflected ray 14a.
  • the clarity of the virtual image which is formed on the line of vision 7 is moreover optimized by the reduction of the reflections originating from the external environment.
  • the transparent plate 13 comprises at its rear face 15, visible through the opening 6 of the enclosure 2, an antireflection treatment so as to prevent any light emanating from a source other than that corresponding to the projection means 10 from disturbing the holographic image thus produced.
  • the three-dimensional geometric shape of the hearth 2 and of the opening 6 illustrated in figure 2 also helps reduce stray light reflections from outside the focus 2.
  • the observer 12 in front of the opening 6, not perceiving the transparent plate 13, has the illusion that the flames are burning above the dummy ember bed 9.
  • the transparent glass plate 13 is configured to be fitted to the walls 3, 4, 5 of the enclosure 2.
  • the transparent plate 13 is dimensioned according to the dimensions of the enclosure 2 and in particular of a cross section of the enclosure 2.
  • the transparent plate 13 advantageously has a shape similar to the geometric shape of a cross section of the enclosure 2.
  • the cross section has an ovoid geometric shape.
  • the transparent plate 13 can be maintained in the enclosure 2 under the aforementioned conditions by means of a support structure 16 which can take different embodiments.
  • this support structure 16 can be in the form of a simple support rim (not shown) at the level of the peripheral wall 5, inside the enclosure 2 so as to provide support for the upper rim 17 of the plate transparent 13, whose lower edge 18 rests, for example, on the bottom 8.
  • this support structure 16 can also take the form of a console 19 resting on this bottom 8, at the rear of the bed. dummy ember 9. On this console rests the upper edge 17 of the transparent plate 13, according to the inclination conditions mentioned above. Furthermore, this console 19 can define a screen 20 at the rear of the dummy ember bed 9.
  • lighting means 21 capable of diffusing an ambient light in the hearth 1.
  • These lighting means 21 can for example take position at the rear of the screen 20 formed by the console 19, between this screen and the peripheral wall 5 of the enclosure 2.
  • the hearth according to the invention can also be equipped with means of sound diffusion and/or olfactory emissions 22.
  • these can be installed in the enclosure 2, under the upper wall 4, preferably in outside the field of vision provided by the opening 6.
  • Such means of sound diffusion and/or olfactory emissions 22 can, for example, emit noises imitating the crackling of a wood fire and/or a smell of wood .
  • a hearth according to the invention can equip a fireplace or even a stove. It is common ground that the hearth of a fireplace or a stove is traditionally connected to a flue for the evacuation of smoke.
  • a chimney 23, as seen in the figure 2 , or a stove comprising a hearth 1 according to the invention can be equipped with a dummy flue 24 inside which heating means 25 can take position.
  • These are preferably of the electric type with dry inertia.
  • this dummy flue 24 can substantially constitute means for suspending the hearth 1.
  • the hearth 1 is rotatably mounted about an essentially vertical axis through, as the case may be, these suspension means preferably defined by a dummy flue 24, or a support base on which the hearth 1 rests (solution not shown).
  • the ember bed 9 can be composed of different elements imitating a combination of burning wood, embers and ashes.
  • the materials are chosen to partially leave show through light radiation produced by lighting means 26 preferably located under this bed of embers 9.
  • These lighting means 26, advantageously in the form of LEDs, are capable of being subjected to a variation in light intensity to simulate the animation of real glowing embers.
  • control and management means 27 can be associated remote control means 28, via radio frequency, Wi-Fi, Bluetooth or other, capable of offering the user a multitude of selections of mode of operation of the fireplace 1.
  • a user can, for example, select one video sequence, among several, likely to be projected by the projection means 10 and/or choose different ambient lighting and/or select a sound diffusion band and/or a particular odor emission from a proposed range.
  • the lighting means 26 under the bed of embers 9 can also adopt different light variation cycles of the LEDs which compose them, cycles which can be selected by such remote control means 28 and/or directly by the control and management means 27.
  • these same means, 27, 28 are capable of offering the user the possibility of intervening in the mode of operation of the heating means 25.
  • the combination of the means that the hearth 1 comprises according to the invention finally offers a user the possibility of artificially reproducing a wood fire in different states of combustion, for example that of a lively fire with large flames to create a welcoming and warming atmosphere or that of a slow-burning fire to generate an impression of calm and well-being.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Marketing (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Accounting & Taxation (AREA)
  • Business, Economics & Management (AREA)
  • Projection Apparatus (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electric Stoves And Ranges (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP20184882.7A 2019-09-17 2020-07-09 Foyer artificiel Active EP3795904B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2022517831A JP2023511638A (ja) 2019-09-17 2020-09-16 人工暖炉
CA3151508A CA3151508A1 (fr) 2019-09-17 2020-09-16 Foyer artificiel
PCT/EP2020/075875 WO2021053019A1 (fr) 2019-09-17 2020-09-16 Foyer artificiel
CN202080065155.7A CN114450523B (zh) 2019-09-17 2020-09-16 人造壁炉
US17/761,493 US11788696B2 (en) 2019-09-17 2020-09-16 Artificial fireplace

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1910226A FR3100872A1 (fr) 2019-09-17 2019-09-17 Foyer artificiel
FR1913416A FR3100873B1 (fr) 2019-09-17 2019-11-28 Foyer artificiel

Publications (2)

Publication Number Publication Date
EP3795904A1 EP3795904A1 (fr) 2021-03-24
EP3795904B1 true EP3795904B1 (fr) 2022-03-02

Family

ID=71452162

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20184882.7A Active EP3795904B1 (fr) 2019-09-17 2020-07-09 Foyer artificiel

Country Status (8)

Country Link
US (1) US11788696B2 (es)
EP (1) EP3795904B1 (es)
JP (1) JP2023511638A (es)
CN (1) CN114450523B (es)
CA (1) CA3151508A1 (es)
DK (1) DK3795904T3 (es)
ES (1) ES2914897T3 (es)
PT (1) PT3795904T (es)

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8332286D0 (en) 1983-12-02 1984-01-11 Valor Heating Ltd Domestic heating appliance
CA2175442C (en) * 1996-04-30 1998-12-22 Kristoffer Hess Flame simulating assembly
GB0107377D0 (en) 2001-03-23 2001-05-16 Valor Ltd Flame effect assemblies
US20060150966A1 (en) * 2005-01-12 2006-07-13 Jamieson Donald R Fireplace assemblies with antireflective screens
US20060162198A1 (en) * 2005-01-21 2006-07-27 Dimplex North America Limited Flame simulating assembly
US8739439B2 (en) * 2010-12-20 2014-06-03 Twin-Star International, Inc. Multi-color simulated flame system for electric fireplaces
CA2726061C (en) * 2010-12-20 2017-11-21 Twin-Star International, Inc. Multi-color simulated flame system for electric fireplaces
CN104285104B (zh) 2012-01-24 2016-10-26 基础持股公司 人工壁炉
US20170261212A1 (en) * 2016-03-09 2017-09-14 Lf Centennial Limited Electric fireplace insert with interchangeable firebox modules
CN105910060A (zh) * 2016-04-20 2016-08-31 广州铱星光电科技有限公司 一种电壁炉的火焰模拟装置
CA2965906C (en) * 2016-05-10 2019-09-24 Twin-Star International, Inc. Electric fireplace lighting system
FR3059761B1 (fr) * 2016-12-07 2019-08-16 Texas De France (Sas) Appareil de chauffage simulant des flammes
US10520149B2 (en) * 2017-06-20 2019-12-31 Living Style (B.V.I.) Limited Flame simulating assembly for simulated fireplaces including a light channeling shield
NL2022379B1 (en) * 2019-01-11 2020-08-13 Kal Fire Beheer B V Artificial fireplace

Also Published As

Publication number Publication date
CN114450523B (zh) 2023-05-30
US20220364697A1 (en) 2022-11-17
JP2023511638A (ja) 2023-03-22
ES2914897T3 (es) 2022-06-17
US11788696B2 (en) 2023-10-17
EP3795904A1 (fr) 2021-03-24
CN114450523A (zh) 2022-05-06
CA3151508A1 (fr) 2021-03-25
PT3795904T (pt) 2022-06-02
DK3795904T3 (da) 2022-06-07

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