EP0480595B1 - Gas fire - Google Patents

Gas fire Download PDF

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Publication number
EP0480595B1
EP0480595B1 EP91308662A EP91308662A EP0480595B1 EP 0480595 B1 EP0480595 B1 EP 0480595B1 EP 91308662 A EP91308662 A EP 91308662A EP 91308662 A EP91308662 A EP 91308662A EP 0480595 B1 EP0480595 B1 EP 0480595B1
Authority
EP
European Patent Office
Prior art keywords
burner
fire
flue
duct
damper
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 - Lifetime
Application number
EP91308662A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0480595A2 (en
EP0480595A3 (en
Inventor
Steven John Philips
Andrew David Gibson
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.)
Cannon Industries Ltd
Original Assignee
Cannon Industries Ltd
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 Cannon Industries Ltd filed Critical Cannon Industries Ltd
Priority to AT9191308662T priority Critical patent/ATE105625T1/de
Publication of EP0480595A2 publication Critical patent/EP0480595A2/en
Publication of EP0480595A3 publication Critical patent/EP0480595A3/en
Application granted granted Critical
Publication of EP0480595B1 publication Critical patent/EP0480595B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/002—Stoves
    • F24C3/006—Stoves simulating flames
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/1808—Simulated fireplaces

Definitions

  • This invention relates to gas fires of the kind including a burner and a radiant unit arranged to be heated by flames from the burner to produce a source of radiant heat. It is known for the source of radiant heat to be supplemented by heated convection air from a duct which receives air drawn through the fire and which is traversed by a flue tube through which combustion products from the burner pass (US-A-2 789 554 and GB-A-2 177 490).
  • the invention provides a gas fire comprising a burner, a radiant unit arranged to be heated by flames from the burner to produce a source of radiant heat, a transparent panel in front of the radiant unit, and a duct for the passage of convection air drawn through the fire, the duct being traversed by a flue tube through which combustion products from the burner pass, in order that the convection air is heated to supplement the heating from the radiant unit, the flue tube being provided with an opening so that, in the event of flue blockage, the combustion products can escape into the convection duct.
  • the opening is preferably in the side of the flue tube that is downstream relative to the flow of convective air, and a shield if preferably provided downstream of the opening.
  • the transparent panel enables the radiant unit to be enclosed, thereby improving the efficiency of combustion: it may be fixed, but may instead be movable e.g. it may be provided in a door which may be opened to enable the radiant heat from the radiant unit to be increased.
  • a damper may be provided in the path of the combustion products through the flue outlet, which damper is movable to vary the flow of such products from the outlet, and the damper being coupled to the door by means of a linkage mechanism which causes the damper to open on opening of the door and partially to close on closure of the door.
  • the gas fire comprises a burner 1 arranged to direct gas rearwardly onto refractory radiation elements 2 in the form of imitation coal pieces supported on a refractory base 3.
  • a pair of doors 4, 5 of heat resistant glass can be closed in front of the radiant units 2 to raise the temperature of combustion gases within the fire.
  • the fire In addition to radiant heat from the fire, the fire includes a duct 6 in which convective air is heated to supplement the radiant heating. Air is drawn through inlets (not shown) at the bottom of the fire, and passes under the burner and imitation coal pieces into the duct (in the direction of the arrow A - Figure 2), and through the duct to outlets 7 which open into the room.
  • the duct 6 is traversed by several flue tubes 8, 9, 10, 11 (only one of which (10) is shown in Figure 2). Combustion gases from the fire must pass through these tubes in the direction of arrows B in order to reach the flue outlet 12 of the fire, and must also pass through box 13 above the duct 6, which contains baffle plate 14 having openings 15 offset with respect to the corresponding flue tubes.
  • the heat exchanger thus created heats the air drawn into the bottom of the fire, which emerges into the room via the outlets 7.
  • a damper 16 is pivotable between two positions above the flue outlet. In dotted position, the flue outlet 12 is partially obscured and in the solid line position, the flue outlet 12 is opened.
  • a linkage mechanism operated by doors 4, 5 pivots the damper 16 into its open position when the doors are open (to increase the draught and reduce the spillage of combustion products into the room) and into its partially closed position when the doors are closed (in which radiated heat is reduced but convective heat is increased).
  • the damper takes up intermediate positions when one door is open or both doors are partially open.
  • the linkage mechanism comprises a pair of members 17, 18 which are pivoted when the doors are shut which in turn via a linkage (not shown) pivot a three sided frame 19 about pivot points 20 to lift and lower control surfaces 21.
  • a problem with such a fire is that, if the flue outlet 12 becomes blocked (e.g. due to a fall of soot in the chimney), or if the chimney itself becomes blocked, with the doors 4, 5 closed, combustion gases will tend to reverse direction with respect to arrows B and recirculate to the region of the burner. The combustion then produced gradually becomes very noxious and these noxious combustion products fall below the burner and coal pieces, whereupon they leak into the room via the inlets (not shown) to the convective duct at the bottom of the fire but mostly through the convective duct itself and out into the room via the outlets 7.
  • some of the flue tubes 8, 10 are provided with bleed openings (10a, 10b, 10c, 10d in Figure 2).
  • bleed openings (10a, 10b, 10c, 10d in Figure 2).
  • a shield 22 is provided downstream of the bleed openings 10a-d relative to the direction of convective air flow, and the shield is cut away at 23 to provide an opening for combustion gases.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Glass Compositions (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Insulated Conductors (AREA)
  • Duct Arrangements (AREA)
EP91308662A 1990-10-10 1991-09-24 Gas fire Expired - Lifetime EP0480595B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT9191308662T ATE105625T1 (de) 1990-10-10 1991-09-24 Gasfeuer.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9021987 1990-10-10
GB9021987A GB2248680B (en) 1990-10-10 1990-10-10 Gas fire

Publications (3)

Publication Number Publication Date
EP0480595A2 EP0480595A2 (en) 1992-04-15
EP0480595A3 EP0480595A3 (en) 1992-11-19
EP0480595B1 true EP0480595B1 (en) 1994-05-11

Family

ID=10683471

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91308662A Expired - Lifetime EP0480595B1 (en) 1990-10-10 1991-09-24 Gas fire

Country Status (7)

Country Link
EP (1) EP0480595B1 (es)
AT (1) ATE105625T1 (es)
AU (1) AU8564991A (es)
CA (1) CA2052312A1 (es)
DE (1) DE69101961T2 (es)
ES (1) ES2052336T3 (es)
GB (1) GB2248680B (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2234058B (en) * 1989-06-21 1994-04-27 Grate Glow Fires Solid fuel effect gas fire means with flow control
GB2507594B8 (en) * 2012-11-06 2022-06-22 Gazco Ltd An improved flush-fitting gas heating appliance

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2789554A (en) * 1955-04-01 1957-04-23 Raymond R Dupler Fuel burning air heating apparatus
GB1488479A (en) * 1974-10-03 1977-10-12 United Gas Industries Ltd Gas fire
GB8515257D0 (en) * 1985-06-17 1985-07-17 Taylor Economic Ltd Gas fire

Also Published As

Publication number Publication date
CA2052312A1 (en) 1992-04-11
GB2248680B (en) 1994-04-20
EP0480595A2 (en) 1992-04-15
EP0480595A3 (en) 1992-11-19
GB2248680A (en) 1992-04-15
ES2052336T3 (es) 1994-07-01
ATE105625T1 (de) 1994-05-15
DE69101961D1 (de) 1994-06-16
GB9021987D0 (en) 1990-11-21
AU8564991A (en) 1992-04-30
DE69101961T2 (de) 1994-08-18

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