CA1239945A - Flicker flame fire - Google Patents
Flicker flame fireInfo
- Publication number
- CA1239945A CA1239945A CA000446205A CA446205A CA1239945A CA 1239945 A CA1239945 A CA 1239945A CA 000446205 A CA000446205 A CA 000446205A CA 446205 A CA446205 A CA 446205A CA 1239945 A CA1239945 A CA 1239945A
- Authority
- CA
- Canada
- Prior art keywords
- display unit
- unit according
- heater
- lamp
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
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
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/002—Stoves
- F24C3/006—Stoves simulating flames
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Electric Stoves And Ranges (AREA)
Abstract
: 9 :
ABSTRACT OF THE DISCLOSURE
A heater with gas burner and radiant elements has a display unit to simulate a coal fire. Unit has a grey translucent top cover simulating a bed of coal embers, the cover having six non-uniformly spaced holes over each of which is a hollowed artificial piece of coal. Each artificial coal piece has one or more transparent windows through which a flicker-flame lamp can be seen. All the lamps are mounted, via standard bayonet holders, on a common support plate fixed by the housing of heater. Two filament bulbs, each with an apertured spinner, are provided to cast patterns of light and shadow on cover and hence simulate a fluctuating glow; a strip of frosted glass scattering of light from bulbs 11.
ABSTRACT OF THE DISCLOSURE
A heater with gas burner and radiant elements has a display unit to simulate a coal fire. Unit has a grey translucent top cover simulating a bed of coal embers, the cover having six non-uniformly spaced holes over each of which is a hollowed artificial piece of coal. Each artificial coal piece has one or more transparent windows through which a flicker-flame lamp can be seen. All the lamps are mounted, via standard bayonet holders, on a common support plate fixed by the housing of heater. Two filament bulbs, each with an apertured spinner, are provided to cast patterns of light and shadow on cover and hence simulate a fluctuating glow; a strip of frosted glass scattering of light from bulbs 11.
Description
~3~
FLICKER FLAME FIRE
The present lnvention relates to a display unit ~or simulating a solid-fuel fire, particularly but not solely for use with a gas or electric heater.
One form of conventional gas or electric heater presently on the market has a unit for simulating a solid-fuel fire in order to enhance the appeal to customers. This unit haq a fibre-glass cover shaped and coloured to represent a pile of coals or logs, under which cover are located at least one filament lamp and rotatable apertured disc. Heat rising from the illuminated lamp causes the disc to rotate, whereupon it casts moving patterns of shadows and light onto the inner surface of the cover. Parts of the cover are coloured to transmit orange-yellow light and hence simulate glowing solid fuel, whereas the remainder of the cover substantially prevents light transmission and hence retains its original colouring (thereby simulating solid fuel which is not yet alight). A
ma~or disadvantage of this type of simulation unit is that, becau~e the rotation of the disc i~q substantially uniform, the variation of illumination is regular, re~ulting in an unrealistic and unsatisfactory illuqion detrimental to the overall appearance of the heater.
U.S. Patent No.4253045 discloses various proposals to vary, apparently in random manner, the illumination cast onto the inner surface of a simulation unit cover, in an attempt to imitate realistically the glowing effect of a sol-ld fuel fire.
~n object of the present invention is to provide a display ~3~
: 2 unit which can simulate realistically a solid-fuel fire at a modest cost and in a simple and reliable manner.
The present invention provides a display unit for simulating a solid-~uel fire, the unit comprising a housing having a surface which simulates solid-fuel, at least one gas discharge lamp withln the housing, the at least one lamp having electrodes shaped and arranged to provide, in use, an unstable mode discharge, at least one window in the simulation surface to . _ enable the lamp to be viewed directly ~rom out~ide the housing.
The direct viewing of the lamp(s) in unstable mode discharge may be by line-of-sight, whether solely through air or through air and a trartsparent material; additionally the direct viewing may include reflection. In al~ cases, the source itself of the randomly moving light must be visible to an observer.
Preferably a substantially transparent section o~ tkte simulation sur~ace forms a window. Additionally or alternatively, an apertt~tre in the simulation surface forms a window.
Two or more of the lamps may be mounted on a common support secured to the housing, thereby ensuring that the lamps are rigidly held in the housing. In an alternative form, a lamp is secured individually to the simulation sur~ace, for example by a member which is embedded within that surface. In either arrangement a lamp can be installed or replaced easily and quickly.
: 3 The display unit of the pre~ent invention may be used either alone, merely for decorative purposes, or in combination with a heater fuelled, for example, by gas or electricity.
The display unit of the present invention provides simulation of a solid-fuel fire in which the fla~es themselves can be seen, rather than the prior art units described above which only attempt to imitate the glow of a solid-fuel fire and/or the indirect light from flickering flames. The unit of present invention affords a direct view of imitation flickering flames, who~e movement is achieved electrically rather than by, for example, mechanical means; moreover, the unit of the present invention does not utilize any gas burners to produce gas - flames, although of cour~e the unit coul~ be used in a heater which i~ fuelled by ga~.
15 - In order that the invention may more clearly be understood, a description is now given, by way of example only, reference being made to the sole accompanying Figure of a heater with a display unit embodyin~ the present invention.
In the Figure, a heater 1 with a conventional arrangement of gas burner ~ets 2 and radiant elements 3 incorporate~ a display unit L~ to simulate a coal fire. The Figure shows a heater 1 with the front of unit 4 cut away in order that the interior can be seen.
Display unit ll has a grey translucent top cover 5 whlch ~5 ~imulates a bed of coal~ and of embers; the cover 5 has six non uniformly spaced holes, over each of which there sits a separate hollow black element 6 to simulate an individual piece of coal. Thus the cover 5 and elements 6 together form a simulation surface. Each element 6 has at least one substantially transparent section forming a window 7 through which can be seen a flicker-~lame lamp 8 positiomed within the element 6 near to the window(s) 7; All the lamps 8 are mounted, via standard bayonet holder~ 99 on a common support plate 10 which i5 fixed to khe housing of heater 1.
The fllcker-flame la ps are of a conYentional type in which a glass enclosure containing neon has two flame-shaped electrodes, the size of the cathode and the spacing of the electrodes encouraging the discharge to wander over the electrode surfaces in a random manner. This type o~ lamp has been known widely for many years (see for ç~ample British Patent Specification ~o.997961 which was published on 14 July, 1965), but there has been no prior disclosure or use of such lamps in a unit according to the present invention as claimed, even though there has been much interest and activity ln the industry concerning the development of improved and more realistic simulated solid-fuel fires.
The display unit 4 also has two filament bulbs 11 (only one being in view in the Flgure), above each o~ which there is a spir~er 12 with apertureq 13 in order to cast patterns of light and shadow on the inner surface of cover 5. Located along the back of unit 4 and above part of the spinners 12 is a strip of frosted glass 1l~ which contributes to the random scattering of light from bulbs 11.
When the display unit is operatlng, the randomly moving "~ .
~23~5 : 5 discharge o~ lamps 8 can readily been seen through the respective window(s) 7 to give the appearance of real ~lickerlng flames, while the fluctuating light produced by bulbs 11, spinners 12 and frosted glasa 14 is transmitted through cover 5 to give the appearance of a varying glow. Clearly display unit 14 can be operating whether or not the heater 1 is producing any heat; thus the unit 4 in heater 1 can be used to produce an aesthetically and pleasing display, enhancing the appearance of a room, even when it is not necessary (and indeed may be undesirable, at that time) for the room to be heated.
The unit 4 also has a control whereby the bulb~ 11 can be switched between an 'off' mode and two different light output settings, so that the overall appearance of the unit can be varied as desired.
-- The houaing of heater 1 has a heat insulating barrier 15 which separates the section incorporating the radiants 3 from the display unit 4, becau~e undue heating of lamps 8 and bulbs 11 can adversely affect their operation and longevity.
Additionally there may be ducta and/or ~ fan in the heater in order to promote air circulation around unit 4 in order to minimiae the effect on the lamps 8 of heat from radiant~ 2. In a modified heater, unit 4 is located below the radiants.
The artificial coal piecea 6 are made by forming a tranaparent plastica material moulding, fixing a mask to the moulding and then applying ~for example by spraying) appropriate colouring, so that when the mask is removed the portions remaining transparent form the ~lndow(s) 7. The cover also, if : '.
des~red, can be manufactured in the ~ame way.
A display unit embodying the present invention may include any one or more of the following modification~ from the ~orm qhown in the sole Figure. The support plate may be arcuate such that the lamps 8 are not in the same horizontal plane, and/or it may be twiqted about an axis parallel to its longitudinal d$mension such that the lamps 8 have different orientations; additionally or alternatively the support bar may be positioned within the unit in such a way that the lamps 8 do not lie in a single horizontal straight line substantially parallel to the back surface of the unit 4. The surface simulating a solid-fuel fire may have at least one aperture through which a flicker-flame lamp can be viewed directly, whereby the at least one aperture comprises a window; the apertured surface may be manufactured solely by moulding, or the surface may be manufactured initially without these apertures (e.g. by moulding) and the apertures are cut out subsequèntly.
One or more of the lamps 8 may be individually fixed solely to the simulation surface itself in order to improve the randomness of the po~itioning of the lamps over the surface; thus, for example, a qinsle lamp may be secured to two wires each with one end embedded in the surface.
The unit may have a dimming control whereby the power input to, and hence the light output of, the lamps 8 can be ad~usted a~ required. The lamps in the unit may be eleotrically conneoted in a series arrangement or in a parallel arrangement, or in a combination of each ($n the latter ca~e the variation in , : 7 electrical potential drop acro~ diPferent lamps resulting in a variation in light output and rate of discharge movement between different lamps). One or more of the lamps may have a sleeve to promote scattering of light; the sleeve may include a reflective portion to direct additional light forwards. The cover 5 and elements 6 may be modified such that they form a surface simulating a wood fire, with or without coal in it.
The gas burners and radiants may be replaced by some form of electrically powered heating unit, for e~ample electrical radiant heater elements; alternatively the display unit may be used by itself, i.e. without any form of heating unit, for decorative purposes alone.
Clearly, a display unit embodying the.present invention may have as many flicker-flame lamps as considered approriate, there ^being no technical limitation or optimum amount; however it should be noted that if a unit is to have only a few such lamps, it is ad~antageous for one or more to have a plurality of corresponding windows in order to maximise the ef~ect of the lamps.
A unit embodying the present invention may also include other features, not disclosed above, which would be evident to a man skilled in the art.
FLICKER FLAME FIRE
The present lnvention relates to a display unit ~or simulating a solid-fuel fire, particularly but not solely for use with a gas or electric heater.
One form of conventional gas or electric heater presently on the market has a unit for simulating a solid-fuel fire in order to enhance the appeal to customers. This unit haq a fibre-glass cover shaped and coloured to represent a pile of coals or logs, under which cover are located at least one filament lamp and rotatable apertured disc. Heat rising from the illuminated lamp causes the disc to rotate, whereupon it casts moving patterns of shadows and light onto the inner surface of the cover. Parts of the cover are coloured to transmit orange-yellow light and hence simulate glowing solid fuel, whereas the remainder of the cover substantially prevents light transmission and hence retains its original colouring (thereby simulating solid fuel which is not yet alight). A
ma~or disadvantage of this type of simulation unit is that, becau~e the rotation of the disc i~q substantially uniform, the variation of illumination is regular, re~ulting in an unrealistic and unsatisfactory illuqion detrimental to the overall appearance of the heater.
U.S. Patent No.4253045 discloses various proposals to vary, apparently in random manner, the illumination cast onto the inner surface of a simulation unit cover, in an attempt to imitate realistically the glowing effect of a sol-ld fuel fire.
~n object of the present invention is to provide a display ~3~
: 2 unit which can simulate realistically a solid-fuel fire at a modest cost and in a simple and reliable manner.
The present invention provides a display unit for simulating a solid-~uel fire, the unit comprising a housing having a surface which simulates solid-fuel, at least one gas discharge lamp withln the housing, the at least one lamp having electrodes shaped and arranged to provide, in use, an unstable mode discharge, at least one window in the simulation surface to . _ enable the lamp to be viewed directly ~rom out~ide the housing.
The direct viewing of the lamp(s) in unstable mode discharge may be by line-of-sight, whether solely through air or through air and a trartsparent material; additionally the direct viewing may include reflection. In al~ cases, the source itself of the randomly moving light must be visible to an observer.
Preferably a substantially transparent section o~ tkte simulation sur~ace forms a window. Additionally or alternatively, an apertt~tre in the simulation surface forms a window.
Two or more of the lamps may be mounted on a common support secured to the housing, thereby ensuring that the lamps are rigidly held in the housing. In an alternative form, a lamp is secured individually to the simulation sur~ace, for example by a member which is embedded within that surface. In either arrangement a lamp can be installed or replaced easily and quickly.
: 3 The display unit of the pre~ent invention may be used either alone, merely for decorative purposes, or in combination with a heater fuelled, for example, by gas or electricity.
The display unit of the present invention provides simulation of a solid-fuel fire in which the fla~es themselves can be seen, rather than the prior art units described above which only attempt to imitate the glow of a solid-fuel fire and/or the indirect light from flickering flames. The unit of present invention affords a direct view of imitation flickering flames, who~e movement is achieved electrically rather than by, for example, mechanical means; moreover, the unit of the present invention does not utilize any gas burners to produce gas - flames, although of cour~e the unit coul~ be used in a heater which i~ fuelled by ga~.
15 - In order that the invention may more clearly be understood, a description is now given, by way of example only, reference being made to the sole accompanying Figure of a heater with a display unit embodyin~ the present invention.
In the Figure, a heater 1 with a conventional arrangement of gas burner ~ets 2 and radiant elements 3 incorporate~ a display unit L~ to simulate a coal fire. The Figure shows a heater 1 with the front of unit 4 cut away in order that the interior can be seen.
Display unit ll has a grey translucent top cover 5 whlch ~5 ~imulates a bed of coal~ and of embers; the cover 5 has six non uniformly spaced holes, over each of which there sits a separate hollow black element 6 to simulate an individual piece of coal. Thus the cover 5 and elements 6 together form a simulation surface. Each element 6 has at least one substantially transparent section forming a window 7 through which can be seen a flicker-~lame lamp 8 positiomed within the element 6 near to the window(s) 7; All the lamps 8 are mounted, via standard bayonet holder~ 99 on a common support plate 10 which i5 fixed to khe housing of heater 1.
The fllcker-flame la ps are of a conYentional type in which a glass enclosure containing neon has two flame-shaped electrodes, the size of the cathode and the spacing of the electrodes encouraging the discharge to wander over the electrode surfaces in a random manner. This type o~ lamp has been known widely for many years (see for ç~ample British Patent Specification ~o.997961 which was published on 14 July, 1965), but there has been no prior disclosure or use of such lamps in a unit according to the present invention as claimed, even though there has been much interest and activity ln the industry concerning the development of improved and more realistic simulated solid-fuel fires.
The display unit 4 also has two filament bulbs 11 (only one being in view in the Flgure), above each o~ which there is a spir~er 12 with apertureq 13 in order to cast patterns of light and shadow on the inner surface of cover 5. Located along the back of unit 4 and above part of the spinners 12 is a strip of frosted glass 1l~ which contributes to the random scattering of light from bulbs 11.
When the display unit is operatlng, the randomly moving "~ .
~23~5 : 5 discharge o~ lamps 8 can readily been seen through the respective window(s) 7 to give the appearance of real ~lickerlng flames, while the fluctuating light produced by bulbs 11, spinners 12 and frosted glasa 14 is transmitted through cover 5 to give the appearance of a varying glow. Clearly display unit 14 can be operating whether or not the heater 1 is producing any heat; thus the unit 4 in heater 1 can be used to produce an aesthetically and pleasing display, enhancing the appearance of a room, even when it is not necessary (and indeed may be undesirable, at that time) for the room to be heated.
The unit 4 also has a control whereby the bulb~ 11 can be switched between an 'off' mode and two different light output settings, so that the overall appearance of the unit can be varied as desired.
-- The houaing of heater 1 has a heat insulating barrier 15 which separates the section incorporating the radiants 3 from the display unit 4, becau~e undue heating of lamps 8 and bulbs 11 can adversely affect their operation and longevity.
Additionally there may be ducta and/or ~ fan in the heater in order to promote air circulation around unit 4 in order to minimiae the effect on the lamps 8 of heat from radiant~ 2. In a modified heater, unit 4 is located below the radiants.
The artificial coal piecea 6 are made by forming a tranaparent plastica material moulding, fixing a mask to the moulding and then applying ~for example by spraying) appropriate colouring, so that when the mask is removed the portions remaining transparent form the ~lndow(s) 7. The cover also, if : '.
des~red, can be manufactured in the ~ame way.
A display unit embodying the present invention may include any one or more of the following modification~ from the ~orm qhown in the sole Figure. The support plate may be arcuate such that the lamps 8 are not in the same horizontal plane, and/or it may be twiqted about an axis parallel to its longitudinal d$mension such that the lamps 8 have different orientations; additionally or alternatively the support bar may be positioned within the unit in such a way that the lamps 8 do not lie in a single horizontal straight line substantially parallel to the back surface of the unit 4. The surface simulating a solid-fuel fire may have at least one aperture through which a flicker-flame lamp can be viewed directly, whereby the at least one aperture comprises a window; the apertured surface may be manufactured solely by moulding, or the surface may be manufactured initially without these apertures (e.g. by moulding) and the apertures are cut out subsequèntly.
One or more of the lamps 8 may be individually fixed solely to the simulation surface itself in order to improve the randomness of the po~itioning of the lamps over the surface; thus, for example, a qinsle lamp may be secured to two wires each with one end embedded in the surface.
The unit may have a dimming control whereby the power input to, and hence the light output of, the lamps 8 can be ad~usted a~ required. The lamps in the unit may be eleotrically conneoted in a series arrangement or in a parallel arrangement, or in a combination of each ($n the latter ca~e the variation in , : 7 electrical potential drop acro~ diPferent lamps resulting in a variation in light output and rate of discharge movement between different lamps). One or more of the lamps may have a sleeve to promote scattering of light; the sleeve may include a reflective portion to direct additional light forwards. The cover 5 and elements 6 may be modified such that they form a surface simulating a wood fire, with or without coal in it.
The gas burners and radiants may be replaced by some form of electrically powered heating unit, for e~ample electrical radiant heater elements; alternatively the display unit may be used by itself, i.e. without any form of heating unit, for decorative purposes alone.
Clearly, a display unit embodying the.present invention may have as many flicker-flame lamps as considered approriate, there ^being no technical limitation or optimum amount; however it should be noted that if a unit is to have only a few such lamps, it is ad~antageous for one or more to have a plurality of corresponding windows in order to maximise the ef~ect of the lamps.
A unit embodying the present invention may also include other features, not disclosed above, which would be evident to a man skilled in the art.
Claims (9)
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. A display unit for simiulating a solid-fuel fire, the unit comprising a housing provided with an exterior surface to simulate the appearance of solid fuel, at least one gas discharge lamp within the housing, said lamp including electrodes which are so shaped and spaced as to create, in use, an unstable mode discharge simulating the appearance of a flickering flame, and at least one window in the simulation surface enabling the lamp to be viewed directly from outside the housing.
2. A display unit according to claim 1, wherein a substantially transparent section of the simulation surface forms a window.
3. A display unit according to Claim 1 wherein an aperture in the simulation surface forms a window.
4. A display unit according to Claim 1 wherein two or more of the lamps are mounted on a common support secured to the housing.
5. A display unit according to Claim 1 wherein a lamp is secured individually to the simulation surface.
6. A display unit according to Claim 1 having a light source to simulate a background glow.
7. A display unit according to Claim 6, having moveable shutter means to vary the simulated background glow of the light source.
8. A heater incorporating a display unit according to Claim 1.
9. A heater according to Claim 8, fuelled by gas or electricity.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8302334 | 1983-01-28 | ||
| GB838302334A GB8302334D0 (en) | 1983-01-28 | 1983-01-28 | Random flame effect for artificial coal |
| GB8311391 | 1983-04-27 | ||
| GB838311391A GB8311391D0 (en) | 1983-01-28 | 1983-04-27 | Random flame effect for artificial coal |
| GB8316197 | 1983-06-14 | ||
| GB838316197A GB8316197D0 (en) | 1983-01-28 | 1983-06-14 | Artificial coal and wood simulated fires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1239945A true CA1239945A (en) | 1988-08-02 |
Family
ID=27261938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000446205A Expired CA1239945A (en) | 1983-01-28 | 1984-01-27 | Flicker flame fire |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA1239945A (en) |
| GB (1) | GB2134649B (en) |
| NZ (1) | NZ206961A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8329156D0 (en) * | 1983-11-01 | 1983-12-07 | Emi Plc Thorn | Unit for simulating solid-fuel fire |
| GB2232481B (en) * | 1989-06-07 | 1993-06-30 | Creda Ltd | Heating appliances |
| GB2237168A (en) * | 1989-10-17 | 1991-04-24 | Electricity Council | Infra-red radiation source for coal effect fire |
| US5886818A (en) * | 1992-12-03 | 1999-03-23 | Dimensional Media Associates | Multi-image compositing |
| GB9311545D0 (en) * | 1993-06-04 | 1993-07-21 | Focal Point Fires Plc | A space heater |
| US5552934A (en) * | 1994-03-18 | 1996-09-03 | Spm Corporation | Background reflection-reducing plano-beam splitter for use in real image projecting system |
| US6318868B1 (en) | 1997-05-01 | 2001-11-20 | Larussa Joseph A. | Interactive virtual image store window |
| GB2350420B (en) * | 2000-02-10 | 2001-06-13 | Robinson Willey Ltd | Gas-fired heating appliance |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB997961A (en) * | ||||
| US4253045A (en) * | 1979-02-12 | 1981-02-24 | Weber Harold J | Flickering flame effect electric light controller |
-
1984
- 1984-01-27 GB GB08402188A patent/GB2134649B/en not_active Expired
- 1984-01-27 CA CA000446205A patent/CA1239945A/en not_active Expired
- 1984-01-27 NZ NZ20696184A patent/NZ206961A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NZ206961A (en) | 1986-08-08 |
| GB2134649A (en) | 1984-08-15 |
| GB8402188D0 (en) | 1984-02-29 |
| GB2134649B (en) | 1986-12-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |