GB2237168A - Infra-red radiation source for coal effect fire - Google Patents

Infra-red radiation source for coal effect fire Download PDF

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Publication number
GB2237168A
GB2237168A GB8923348A GB8923348A GB2237168A GB 2237168 A GB2237168 A GB 2237168A GB 8923348 A GB8923348 A GB 8923348A GB 8923348 A GB8923348 A GB 8923348A GB 2237168 A GB2237168 A GB 2237168A
Authority
GB
United Kingdom
Prior art keywords
tube
source
infra
red radiation
electrical conductor
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.)
Withdrawn
Application number
GB8923348A
Other versions
GB8923348D0 (en
Inventor
William Jones
Robert William Blundy
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.)
Electricity Council
Original Assignee
Electricity Council
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Electricity Council filed Critical Electricity Council
Priority to GB8923348A priority Critical patent/GB2237168A/en
Publication of GB8923348D0 publication Critical patent/GB8923348D0/en
Publication of GB2237168A publication Critical patent/GB2237168A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/44—Heating elements having the shape of rods or tubes non-flexible heating conductor arranged within rods or tubes of insulating material
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0033—Heating devices using lamps
    • H05B3/0071—Heating devices using lamps for domestic applications
    • H05B3/008—Heating devices using lamps for domestic applications for heating of inner spaces
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/032—Heaters specially adapted for heating by radiation heating

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)

Abstract

An infra-red radiation source includes a sealed transparent tube. An electrical conductor extends through the tube so that the ends of the conductor are accessible at the ends of the tube. The inner or outer surface of the tube is at least partially covered with a layer of an infra-red radiation absorbing material. In operation the source is energised to red heat temperature by passage of an electric current through the conductor. The tube accordingly assumes a burnt or partially burnt appearance in dependence upon the area of the inner or outer surface of the tube which is covered by the infra-red radiation absorbing layer. The tube may be of quartz and the absorbing material copper oxide, iron oxide or boron carbide. <IMAGE>

Description

INFRA-RED RADIATION SOURCE This invention relates to an infra-red radiation source.
Simulated domestic coal and wood fires are popular, and can be fuelled by gas or electricity. There is thus a need for devices which can be used to simulate the burning material of such a fire, and the present invention is particularly concerned with such a device for use in an electricity fuelled fire.
According to this invention there is provided an infra-red radiation source comprising a sealed transparent tube having an electrical conductor extending therethrough with the ends of the electrical conductor accessible at the ends of the tube, the inner or outer surface of the tube being at least partially covered with a layer of an infra-red radiation absorbing material.
When the source of the invention is energised by passage of an electric current through the electrical conductor, the tube assumes a burnt or partially burnt appearance when energised to red heat temperature in dependence upon the area of the inner or outer surface of the tube covered by the infra-red radiation absorbing layer. Thus, if a plurality of such sources, possibly each in the form of a wooden log or twig, or a lump of coal, are stacked together and energised, the appearance of a burning fire is obtained, the sources also radiating infra-red radiant energy to warm the environment.
Other artificial (or real) combustible material such as coal or wood can be added to the stack of sources to obtain the required effect.
Preferably the tube is of ceramic material, for example quartz, and the ends thereof can be sealed in any convenient manner, for example using a fire cement.
The electrical conductor is perferably a metal wire, and can be either straight or coiled. Other forms of electrical conductor can be used, for example carbon fibre conductors.
The tube can be evacuated or contain a suitable gas at sub-atmospheric pressure.
The energy emitted by the source of the invention can be controlled by control of the electrical heating current supplied to the electrical conductor, while the thermal response of the source will be dependent upon the mass of the infra-red radiation absorbing layer.
The infra-red radiation absorbing layer can be of, for example, copper oxide, boron carbide or iron oxide.
The drawing shows diagrammatically the basis for a simulated domestic fire comprising a fire place 1 containing a plurality of sources 2 according to the invention arranged in a stack together with pieces 10 of artificial coal. Each source 2, when energised, provides regions 3 which glow and regions 4 which assume a burnt or partially burnt appearance.

Claims (11)

1. An infra-red radiation source comprising a sealed transparent tube having an electrical conductor extending therethrough with the ends of the electrical conductor accessible at the ends of the tube, the inner or outer surface of the tube being at least partially covered with a layer of an infra-red radiation absorbing material.
2. A source as claimed in Claim 1, in which the tube is of ceramic material.
3. A source as claimed in Claim 2, in which the tube is of quartz.
4. A source as claimed in any preceding claim, in which the electrical conductor is a metal wire.
5. A source as claimed in Claim 4, in which the metal wire is coiled.
6. A source as claimed in Claim 1, Claim 2 or Claim 3, in which the electrical conductor is of carbon fibre.
7. A source as claimed in any preceding claim, in which the ends of the tube are sealed with a fire cement.
8. A source as claimed in any preceding claim, in which the tube is evacuated.
9. A source as claimed in any one of Claims 1 to 8, in which the tube contains a gas at sub-atmospheric pressure.
10. A source as claimed in any preceding claim, in the form of a wooden log or twig, or a lump of coal.
11. A simulated fire comprising a plurality of infra-red radiation sources as claimed in any preceding claim.
GB8923348A 1989-10-17 1989-10-17 Infra-red radiation source for coal effect fire Withdrawn GB2237168A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8923348A GB2237168A (en) 1989-10-17 1989-10-17 Infra-red radiation source for coal effect fire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8923348A GB2237168A (en) 1989-10-17 1989-10-17 Infra-red radiation source for coal effect fire

Publications (2)

Publication Number Publication Date
GB8923348D0 GB8923348D0 (en) 1989-12-06
GB2237168A true GB2237168A (en) 1991-04-24

Family

ID=10664694

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8923348A Withdrawn GB2237168A (en) 1989-10-17 1989-10-17 Infra-red radiation source for coal effect fire

Country Status (1)

Country Link
GB (1) GB2237168A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134649A (en) * 1983-01-28 1984-08-15 Thorn Emi Domestic Appliances Simulated solid fuel fires
GB2137336A (en) * 1983-03-25 1984-10-03 Anthony Joseph Davies Electrical illumination devices for simulated fires
GB2139341A (en) * 1983-04-29 1984-11-07 Gen Electric Heat lamps
GB2215963A (en) * 1988-03-21 1989-09-27 Sr Frank Edward Robak Low voltage heating element for portable tools

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134649A (en) * 1983-01-28 1984-08-15 Thorn Emi Domestic Appliances Simulated solid fuel fires
GB2137336A (en) * 1983-03-25 1984-10-03 Anthony Joseph Davies Electrical illumination devices for simulated fires
GB2139341A (en) * 1983-04-29 1984-11-07 Gen Electric Heat lamps
GB2215963A (en) * 1988-03-21 1989-09-27 Sr Frank Edward Robak Low voltage heating element for portable tools

Also Published As

Publication number Publication date
GB8923348D0 (en) 1989-12-06

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)