EP0382107A1 - Pièce à insérer pour cheminée - Google Patents

Pièce à insérer pour cheminée Download PDF

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Publication number
EP0382107A1
EP0382107A1 EP90102044A EP90102044A EP0382107A1 EP 0382107 A1 EP0382107 A1 EP 0382107A1 EP 90102044 A EP90102044 A EP 90102044A EP 90102044 A EP90102044 A EP 90102044A EP 0382107 A1 EP0382107 A1 EP 0382107A1
Authority
EP
European Patent Office
Prior art keywords
air
fireplace
frame
insert according
air inlet
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Withdrawn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
EP90102044A
Other languages
German (de)
English (en)
Inventor
Norbert Schädler
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.)
HAUSKAMINBAU AG VADUZ
Original Assignee
HAUSKAMINBAU AG VADUZ
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 HAUSKAMINBAU AG VADUZ filed Critical HAUSKAMINBAU AG VADUZ
Publication of EP0382107A1 publication Critical patent/EP0382107A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F24B1/191—Component parts; Accessories
    • F24B1/193—Grates; Irons
    • 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
    • F24B1/185—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion
    • F24B1/189—Stoves with open fires, e.g. fireplaces with air-handling means, heat exchange means, or additional provisions for convection heating ; Controlling combustion characterised by air-handling means, i.e. of combustion-air, heated-air, or flue-gases, e.g. draught control dampers 
    • F24B1/19—Supplying combustion-air

Definitions

  • the present invention relates to a fireplace insert to improve combustion.
  • the term chimney refers to an open fireplace with a chimney for smoke extraction.
  • fireplaces are one of the original heating devices in living rooms and have been used as secondary heating in upmarket housing for years. With such fireplaces, the draft can be insufficient (due to lack of air, too small a fireplace cross-section, too low a fireplace height, etc.), so that the wood burns too slowly or incompletely or part of the flue gases escape into the living room instead of flowing out through the fireplace.
  • various fireplace inserts (such as fire grates) have become known, which can partly contribute to an improvement, but in most cases are not sufficient.
  • the object of the present invention is to create a fireplace insert which, even for fireplaces with an extremely bad draft, for whatever reason, significantly improves the combustion of the wood and prevents the escape of smoke gases into the room.
  • the primary combustion air is preheated by the invention, as a result of which higher temperatures are set in the combustion center. Due to the high heat development in the center, the flue gases are burned more completely, thereby reducing the amount of pollutants. At the same time, the higher combustion temperatures cause the flue gases and the ambient air to be thermally accelerated, which on the one hand ensures good smoke extraction and on the other hand creates a thermal vacuum that promotes the afterflow of the combustion air. The heat recovery is improved and the wood consumption can be reduced accordingly.
  • the fireplace insert according to FIG. 1 is placed on the fireplace floor 1 under the chimney hood (not shown). It has an air duct 2, the horizontal section 2 'of which is made of sheet metal 8 which is U-shaped in cross section and which can also be closed at the bottom by a sheet metal wall, but is closed off by the fireplace base 1 in the exemplary embodiment shown.
  • the air duct 2 has an open air inlet end 3. At its inner end, it is provided with a chimney-like connecting piece 4 leading upwards, which forms the air outlet end 5.
  • a cover 6 is provided which is firmly connected to the connector 4 by individual pins 7 and leaves an air outlet slot 8 free.
  • the air duct 2 must have at least one air inlet end 3.
  • air inlet ends are possible, for example, if two or three horizontal sections 2 'T or cross-shaped lying on the fireplace floor 1 lead to the nozzle 4.
  • the air inlet end 3 (or other air inlet ends) and the air outlet end 5 must be so far apart in horizontal extension that the air outlet end 5 can be arranged in the core of a fire, whereas the air inlet end 3 must be outside the area of the fire so that it does not pass through the fuel can still be clogged with embers or ashes. It must also be ensured that the air outlet end 5 is at a sufficient distance above the support level 9 of the fireplace insert so that it can be arranged and held in the core of a fire.
  • the distance of the air outlet end 5 from the fireplace base 1 and its location in a fire is secured by the U-shaped, horizontal section 2 ', which has sufficient stability.
  • a further improvement in securing the position and the combustion-promoting effect of the use of the fireplace is achieved by a frame which is firmly connected to the air duct 2 and is rectangular in plan view, in which the firewood is piled up and the fire is kindled.
  • the fireplace insert according to FIG. 2 essentially has a truncated pyramid-shaped shell 10 which widens upwards. In the middle of the floor there is a circular opening 3, to which a nozzle 4 open at the top connects.
  • the nozzle 4 forms the air duct 2 and the opening 3 the air inlet end.
  • the upper end of the nozzle is the air outlet end 5.
  • the fuel is piled up in the bowl 10 and the fire ignited therein.
  • the air outlet end 5 essentially lies in the core of the fire.
  • the shell 10 stands on two parallel bow-shaped feet 10, which form the support plane 9 and the shell bottom in keep a sufficient distance from the chimney floor 1 so that enough primary combustion air can flow into the air duct 2 from the surroundings. Protection of the air outlet end 5 against incoming embers or ashes is not provided here and is not required. As far as embers and ashes fall into the air duct 2, it piles up underneath it on the cheminéeboden 1 and, if it should hinder the entry of air, can be removed with a fire hook or pick poked between the feet 11.
  • the shell 10 can be provided with openings 12 for secondary combustion air on one or more of its inclined side walls.
  • the shell 10 Since the shell 10 has the function, inter alia, of shielding the air inlet end from the fire, the height of the feet 11 and that of the connecting piece 4 should be selected such that the air outlet end 5 lies in the middle of the fire and the access to primary combustion air is as unobstructed as possible .
  • the shell 10 defines the embers that form around the air outlet end 5.
  • the primary combustion air flowing directly through the air duct 2 to the glowing heap causes a comparatively high core temperature there. This promotes the outflow of the flue gases and the sucking in of primary combustion air, and wood that is not completely dry can also be burned with ease.
  • the inclined side walls 10 result in favorable control of the secondary combustion air which heats up thereon, as a result of which the flame comb of the fire constricts onion-like against the smoke exhaust.
  • the high temperature also creates an ent speaking high flue gas velocity, which improves the chimney flue or the smoke flue.
  • the example according to FIG. 3 differs from the previous one only in the shape of the shell 10, which appears concave when viewed from above. It stands with four feet 11 on the fireplace floor 1, which keep it at a sufficient distance for air access. Otherwise the mode of operation is the same.
  • the end faces of the shell 10 can (as shown) be open or closed with straight end walls.
  • the air outlet end 5 of the air duct 2 can be held in or near its core during the entire duration of a fire by a frame 13 which is rectangular in plan view. In this the firewood is piled up and the fire started.
  • the frame 13 delimits the embers that form during long fires and holds the air outlet end 5 of the air duct 2, which is designed as a tube, in or near the core of a fire.
  • the air duct 2 extends diametrically through the frame 13. Its front side is formed by a wall 14 in the form of a flat sheet which is provided with a recess 15 into which the air duct 2 opens with its first air inlet end 3. Further openings 16 serve to access the secondary air from the front of the fire.
  • the side walls 17 consist of two concave sheets seen from the outside, which are firmly connected to the front wall 14.
  • the back of the frame 13 is formed by a rear wall 18 parallel to the front wall 14, the ends of which the side walls 17 are connected and the center of which has an opening 12 'in which the second air inlet end 3' of the air duct 2 opens.
  • the side walls 17 as well as the front and rear walls 14 and 18 are provided on their underside with foot-like spacers 19 which leave narrow air access slots 20 free between the frame 13 and the fireplace base 1.
  • the concave side walls 17 seen from the outside also have an advantageous effect on preheating and directing the secondary combustion air.
  • the frame 13 and the air duct 2 are not firmly connected.
  • the frame 13 can be lifted from the air duct 2 resting on the fireplace floor 1 or placed over it.
  • the air duct 2 has four U-shaped sheets formed, cross-shaped towards the center, horizontal sections 2 ', 2 ⁇ , 2 ′′′ and 2 IV , which are open (or limited by the fireplace floor 1) and each form an air inlet end 3, 3 ', 3 ⁇ and 3 ′′′.
  • the horizontal sections open in the middle into a vertical nozzle 4, the air outlet end 5 of which is located at a distance above the fireplace base 1 and which is protected against incoming ash or embers by a cover 6 carried by pins 7.
  • the walls 14, 17, 18 are provided on the underside with recesses 21 made in the air slots 20 and adapted to the cross section of the horizontal sections of the air duct 2 grasp horizontal sections 2 ', 2 ⁇ , 2 ′′′, 2 IV and center the nozzle 4 with respect to the frame 13.
  • the side walls 17 are also concave when viewed from the outside.
  • the frame 13 can, however, also be widened in the shape of a truncated pyramid, analogously to the walls of the shell 10 in FIG. 2.
  • One or more of its walls 14, 17, 18 can be penetrated by round or slot-shaped openings which serve to supply secondary combustion air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Solid-Fuel Combustion (AREA)
EP90102044A 1989-02-09 1990-02-02 Pièce à insérer pour cheminée Withdrawn EP0382107A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH441/89 1989-02-09
CH44189 1989-02-09

Publications (1)

Publication Number Publication Date
EP0382107A1 true EP0382107A1 (fr) 1990-08-16

Family

ID=4187101

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90102044A Withdrawn EP0382107A1 (fr) 1989-02-09 1990-02-02 Pièce à insérer pour cheminée

Country Status (1)

Country Link
EP (1) EP0382107A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2447610A1 (fr) * 2010-10-25 2012-05-02 DPU Profirenovierer Unternehmergesellschaft (haftungsbeschränkt) Utilisation de carburant dans des fours de cheminées et de poêles en faïence, des cheminées de chauffage, des foyers encastrables et cartouches d'allumage
PL424446A1 (pl) * 2018-01-31 2019-08-12 Przedsiębiorstwo Wielobranżowe Bitaco Bitka Spółka Jawna Zestaw do optymalizacji spalania drewna w kominku

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB576552A (en) * 1944-01-20 1946-04-09 Patrick Joseph Tuohy Improvements relating to domestic fire-places
GB638458A (en) * 1948-02-09 1950-06-07 Edgar Harold Bracewell Improvements in domestic grates
GB683024A (en) * 1949-02-08 1952-11-19 John Gaunt Improvements relating to draught distributors for use in household or other fires, and stoves, which employ firegrates
GB697266A (en) * 1951-07-20 1953-09-16 Anderson Harry A fuel-saving device
US4213445A (en) * 1978-08-14 1980-07-22 C. Mayo, Inc. Fireplace combustion air duct apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB576552A (en) * 1944-01-20 1946-04-09 Patrick Joseph Tuohy Improvements relating to domestic fire-places
GB638458A (en) * 1948-02-09 1950-06-07 Edgar Harold Bracewell Improvements in domestic grates
GB683024A (en) * 1949-02-08 1952-11-19 John Gaunt Improvements relating to draught distributors for use in household or other fires, and stoves, which employ firegrates
GB697266A (en) * 1951-07-20 1953-09-16 Anderson Harry A fuel-saving device
US4213445A (en) * 1978-08-14 1980-07-22 C. Mayo, Inc. Fireplace combustion air duct apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2447610A1 (fr) * 2010-10-25 2012-05-02 DPU Profirenovierer Unternehmergesellschaft (haftungsbeschränkt) Utilisation de carburant dans des fours de cheminées et de poêles en faïence, des cheminées de chauffage, des foyers encastrables et cartouches d'allumage
PL424446A1 (pl) * 2018-01-31 2019-08-12 Przedsiębiorstwo Wielobranżowe Bitaco Bitka Spółka Jawna Zestaw do optymalizacji spalania drewna w kominku

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