EP0678184B1 - Raumheizer für feste brennstoffe - Google Patents

Raumheizer für feste brennstoffe Download PDF

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Publication number
EP0678184B1
EP0678184B1 EP94904223A EP94904223A EP0678184B1 EP 0678184 B1 EP0678184 B1 EP 0678184B1 EP 94904223 A EP94904223 A EP 94904223A EP 94904223 A EP94904223 A EP 94904223A EP 0678184 B1 EP0678184 B1 EP 0678184B1
Authority
EP
European Patent Office
Prior art keywords
air
deflector member
fire box
deflector
heating device
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
EP94904223A
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English (en)
French (fr)
Other versions
EP0678184A1 (de
Inventor
Jonathan Greenall
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0678184A1 publication Critical patent/EP0678184A1/de
Application granted granted Critical
Publication of EP0678184B1 publication Critical patent/EP0678184B1/de
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
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B5/00—Combustion-air or flue-gas circulation in or around stoves or ranges
    • F24B5/02—Combustion-air or flue-gas circulation in or around stoves or ranges in or around stoves
    • F24B5/021—Combustion-air or flue-gas circulation in or around stoves or ranges in or around stoves combustion-air circulation
    • F24B5/025—Supply of secondary air for completing combustion of fuel

Definitions

  • This invention relates to solid fuel heating devices, such as stoves.
  • Solid fuel heating stoves have been in common use for many hundreds of years.
  • a common arrangement for a stove is to have a primary air control, and also a secondary air control, which is adjustable to control the burn speed of the appliance.
  • baffle or deflector, plate in the region of the top of the fire box which serves to deflect rising air and prevent it from flowing directly to the exhaust outlet from the stove.
  • a deflector plate may well cause rising air to circulate back within the fire box. This circulation keeps the air, and its associated smoke particles, in the hot region of the fire box for longer and allows more of the smoke to be burned off. Furthermore, mixing the smoke laden air more thoroughly also encourages fuller burning.
  • US 4 316 444 discloses a stove that has a horizontal flat hollow baffle which provides an air supply, the baffle having horizontally directed holes to provide a horizontal air supply at the top of the fire box of the stove.
  • the baffle is removable from inside the stove by undoing bolts provided inside the fire box.
  • An aim of the present invention is to provide a heating device with a new baffle or deflector member.
  • a heating device having a fire box and a deflector or baffle member adapted to deflect air rising in the fire box, in which the deflector member is provided with a first air inlet coupling, and a wall of the fire box with a second, complementary, coupling, the first and second complementary couplings being releasably engaged so as to co-operate in providing an air inlet passageway from outside of the device to the deflector member, characterised in that the deflector member provides a downwardly directed air supply to the fire box and is releasably mounted adjacent the external wall of the fire box, the deflector member having a tubular pipe which projects through the external wall of the fire box and co-operates with a clamp member to hold the deflector member to the external wall.
  • the deflector member preferably has an air outlet aperture which is non-round.
  • the air outlet aperture is preferably generally elliptical.
  • the deflector member is preferably a separate component.
  • the deflector member preferably has an air inlet projection which defines an air inlet passage and which extends to or beyond the external wall of the fire box.
  • the air inlet projection preferably extends through the wall of the appliance and beyond.
  • the deflector member may have a female air inlet connector and the wall of the appliance a male inlet air connector.
  • the deflector member preferably provides an uncontrolled air supply to the fire box. There may be one, or two, or further air supplies in addition to the air supply of the deflector member.
  • the deflector member preferably has a generally downwardly facing surface provided with an air outlet.
  • the surface is preferably provided with a plurality of air outlets.
  • a line of air outlets at the front lip of the deflector member is believed to encourage tumbling circulation of air in the fire box. This encourages more complete combustion.
  • Each surface may have an air outlet, or outlets.
  • An air outlet, or outlets may be provided at the angle where the two surfaces meet. This is believed to encourage full combustion.
  • the deflector member has an air supply inlet and a plurality of air supply outlets adapted to supply air to the fire box of the heating appliance.
  • the deflector member preferably has an air chamber or passage and a plurality of air outlets from the air chamber or passage.
  • the chamber preferably defines a substantial part of the volume of the deflector member, and preferably substantially all of the volume of the deflector member.
  • At least one or more of the air outlets may be non-round. There may be at least five outlets and preferably at least ten outlets.
  • the deflector member may be installed at an upper region of a fire box, the deflector member having an air inlet, and an air outlet aperture, and a fold line about which it is folded, the air outlet being near or on the fold line.
  • the deflector member has a generally oval, cylindrical, or non-round air outlet aperture.
  • the deflector member may have an air outlet aperture which has a varying cross section.
  • the air outlet narrows in cross-sectional area in the direction towards the interior of the fire box.
  • the deflector member may have a downwardly projecting lip at or towards its forward end.
  • the air which flows out of the deflector into the fire box may create an air buffer or air dam between the deflector and the air which is already in the fire box. It is believed that such an air buffer keeps some hot fire box gases and combustion products away from the surface of the deflector and thus increases its lifetime. It is also believed that the flow of cooler air through the deflector (relative to the fire box gases) may also increase the lifetime of the deflector.
  • the deflector is of such a size that it can be removed through the door of the stove.
  • a stove may be provided with a removable or displaceable top, for example, a lift-off top, such that the deflector member can be removed and replaced easily via the top of the stove.
  • Figure 1 shows a multi-fuel stove having a fire box 1, an ash chamber 2 having an ash pan 3, a grate 4, a primary air inlet 5 a door 6, and exhaust outlet 7, and a deflector plate 8 (sometimes called a baffle, or throat plate) resting on refractory bricks 9 which form a back and side walls to the fire box.
  • a deflector plate 8 sometimes called a baffle, or throat plate
  • Figure 2 shows a multi-fuel stove which is in many ways similar to that of Figure 1, except that it has an improved deflector plate, referenced 10.
  • the deflector plate 10 is another air supply to the fire box and is perhaps better called a deflector member since it has an internal structure.
  • the deflector member 10 is perhaps best shown in Figure 6 and comprises a generally rectangular metal box having an internal pre-heating air chamber 11, two air inlets, comprising pipes 12, and a lot of air outlets 13 provided in the lower face of the deflector member 10.
  • the deflector member is made from a bottom sheet 14 welded to an upper sheet 15 at welds 16.
  • Side panels 17 are also welded to the upper and lower sheets. It will be noted that the welds 16 are V-shaped, or rightangled, meetings between the upper ,and lower sheets. The panels of the upper and lower sheets extend generally parallel to each other when the deflector member is assembled.
  • the upper and lower sheets 14 and 15 each have a fold line 18 and 19.
  • a row of air outlets 13 is provided on the fold line 19.
  • the holes 13 which are to be on the fold line 19 are made in the sheet metal of the bottom sheet 14, and then the bottom sheet 14 is folded about the fold line 19. This means that the holes on the fold line, which were originally circular, are non-circular after folding. When looked at in plan view they are generally elliptical after folding. Figure 7 shows that another effect of folding on the line of the holes is that they have a generally conical cross section.
  • the front edge region of the upper sheet 15 projects below the bottom surface of the bottom sheet 14 and provides a depending lip 20.
  • the inlet pipes 12 each have an associated mounting flange 21 extending from them. Only one of the flanges 21 is shown (in chain dotted outline) in Figure 6, and they can be best seen in Figure 5.
  • the lower sheet 14 also has a flange 22 extending along the rearward part of the deflector member.
  • the stove has a back wall 23 which has a pair of apertures 24 adapted to receive the pipes 12.
  • the pipe 12 extend through the apertures 24 and communicate with an external air supply 25.
  • a pair of sealing washer 26, shown in Figure 5 seal the apertures 24 to prevent unwanted air flow through them (they seal in combination with the flange 21).
  • a nut or other clamp member is provided to act on the protruding part of the pipes of the inlets 12 and clamp the flanges 21 to the inner surface of the back wall 23 (with the washers 26 sealed between the flanges 21 and the wall 23).
  • the additional air supply provided by the deflector plate means that there is more fresh air in the fire box and so better combustion takes place.
  • jets of air referenced 30, 31 and 32
  • these jets of air encourage turbulent mixing of air in the fire box, rather than a more organised circulation of air which is-what happened in the prior art.
  • the small size of the air inlets 13 mean that there is quite a strong jet of air coming from them.
  • the holes 13 on the fold line 19 produce a particularly strong jet of air. These are the deformed holes which have a non-round cross section, and which are generally conically tapered. We have found that this produces a spiralling, rifling effect, and the iet of air from these holes extends some considerable distance into the fire box and causes very disorganised, chaotic burning. Indeed, the burning with the present invention could almost be said to be violent.
  • the independent air supply from the deflector plate mixes the air in the fire box and encourages a cleaner, and hotter burn.
  • the lip 20 also causes additional turbulence and additional mixing. It may encourage the tumbling rolling of a body of air in the fire box, or it may not.
  • the deflector member 10 is especially adapted to be easily removed and replaced.
  • the member simply rests on the fire bricks 9 on the back wall, and the fire bricks of side walls (not shown).
  • the deflector, baffle, plate is of such a size that it can be removed through the door of the stove.
  • the stove may have a lift-off top which can be removed to allow easy maintenance or replacement of the deflector member.
  • the holes down the side regions of the deflector member disturb the air in the side regions of the stove. This air is usually rather more stagnant than that of the centre of the stove. Similarly, the air holes at the rear region of the deflector member disturb the air at the rear of the fire box. Thus air flows from the chamber 11 through the air outlets 13 and mixes with the combustion gases high in the fire box promoting thorough combustion and reducing smoke emissions.
  • the deflector member of the present invention is a simple matter to fit the deflector member of the present invention to an existing stove, such as that shown in Figure 1. All that will be required is for the holes 24 to be drilled in the stove and the old deflector plate replaced by the new deflector member 10. This is a simple operation. It will also be appreciated that the deflector member is a self contained unit. This facilitates maintenance and installation.
  • air inlets 13 need not be roughly circular, but could be square, or slots or any shape.
  • the air Since the chamber 11 is of very much larger volume than the size of the holes 13 the air has sufficient time to be pre-heated to a high temperature.
  • the fact that there are a large number of holes 13 means that the air in the fire box is well supplied with additional air and aggetated over a substantial area. Having holes in the plan area of the undersurface of the deflector member means that the air centre region of the fire box is disturbed, mixed, in the jets of air.
  • the stove may have an airwash system providing a flow of pre-heated air over the internal face of the door of the stove.
  • the airwash system may be as described in GB 2 251 302.
  • the air supply to the deflector member coming from the surrounding room.
  • the air flow from the deflector member is described as being independent of the air controls on the stove there may be occasions where it is desirable to have this air supply controllable by the user, or connected to other air controls of the stove. It may have its own air control, or it may be operated by an air control that also controls another air supply (for example the main updraft air supply, or an airwash air supply).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Solid-Fuel Combustion (AREA)
  • Air Supply (AREA)

Claims (10)

  1. Heizvorrichtung mit einer Brennkammer (1) und einem Deflektor- oder Prallelement (10) zur Ablenkung der in der Brennkammer aufsteigenden Luft, wobei der Deflektor (10) mit einem ersten Lufteinlaß-Kupplungsteil (12) und eine Wandung (23) der Brennkammer mit einem zweiten, komplementären Kupplungsteil (24) versehen sind und die ersten und zweiten komplementären Kupplungsteile lösbar aneinander angreifen und zur Bildung einer Lufteinlaßleitung von der Außenseite der Vorrichtung zu dem Deflektorelement (10) zusammenwirken, dadurch gekennzeichnet, daß das Deflektorelement eine nach unten gerichtete Luftzufuhr in die Brennkammer (1) liefert und lösbar an der benachbarten äußeren Wandung (23 der Brennkammer befestigt ist, und daß das Deflektorelement ein Rohr (12) umfaßt, welches die äußere Wandung (23) der Brennkammer durchgreift und mit einem Klemmglied zum Festhalten des Deflektorelements an der äußeren Wandung (23) zusammenwirkt.
  2. Heizvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß ein Flansch (21) vorgesehen ist, der sich von dem Rohr (12) hinwegerstreckt und an der inneren Oberfläche der äußeren Wandung (23) anliegt.
  3. Heizvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Deflektorelement (10) einen nicht-runden Luftauslaß (13) aufweist.
  4. Heizvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Deflektorelement (10) einen Luftauslaß aufweist, der an einer dem Feuer nähergelegenen Stelle eine geringere Querschnittsfläche als an einer vom Feuer entfernteren Stelle aufweist.
  5. Heizvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Deflektorelement (10) eine im wesentlichen nach unten gerichtete Wandung aufweist und daß die nach unten gerichtete Wandung mit mehreren Luftauslässen (13) versehen ist.
  6. Heizvorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß das Deflektorelement (10) in einer Reihe angeordnete nach unten gerichtete Luftauslässe nahe seinem rückwärtigen Rand; in einer Reihe angeordnete nach unten gerichtete Luftauslässe nahe einem oder beiden seitlichen Umfangsrändern; und mindestens einen Luftauslaß (13), vorzugsweise eine Gruppe von Auslässen (13), in einer im wesentlichen mittleren Position und mit Abstand von seinen seitlichen Umfangsrändern aufweist.
  7. Heizvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Deflektorelement eine erste nach unten gerichtete Wandung und eine zweite nach unten gerichtete Wandung in einem Winkel zu der ersten Wandung umfaßt, wobei sowohl die erste als auch die zweite Wandung Luftauslässe aufweisen, die beiden Wandungen sich entlang einer Linie treffen und eine Reihe von Luftauslässen auf dieser Linie vorgesehen ist.
  8. Heizvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Deflektorelement (10) an oder gegen sein vorderes Ende hin eine nach unten vorstehende Lippe (20) aufweist.
  9. Heizvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Deflektorelement (10) mit einem Lufteinlaß-Kupplungsteil (12) versehen ist, das aus einem Gehäuse der Vorrichtung heraus vorsteht, und daß ein komplementäres Kupplungsteil (24) an dem Lufteinlaß-Kupplungsteil zur Festlegung des Deflektorelements angreift.
  10. Heizvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Deflektorelement (10) einen Lufteinlaß und eine Luftauslaßöffnung sowie eine Knicklinie aufweist, um die es abgewinkelt ist, und daß die Luftauslaßöffnung nahe oder auf der Knicklinie angeordnet ist.
EP94904223A 1993-01-09 1994-01-05 Raumheizer für feste brennstoffe Expired - Lifetime EP0678184B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB939300364A GB9300364D0 (en) 1993-01-09 1993-01-09 Solid fuel heating devices and components for them
GB9300364 1993-01-09
PCT/GB1994/000014 WO1994016271A1 (en) 1993-01-09 1994-01-05 Solid fuel heating devices and components for them

Publications (2)

Publication Number Publication Date
EP0678184A1 EP0678184A1 (de) 1995-10-25
EP0678184B1 true EP0678184B1 (de) 1998-09-02

Family

ID=10728511

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94904223A Expired - Lifetime EP0678184B1 (de) 1993-01-09 1994-01-05 Raumheizer für feste brennstoffe

Country Status (6)

Country Link
EP (1) EP0678184B1 (de)
DE (1) DE69412999T2 (de)
DK (1) DK0678184T3 (de)
ES (1) ES2124387T3 (de)
GB (2) GB9300364D0 (de)
WO (1) WO1994016271A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2368116B (en) * 1998-04-24 2002-10-16 Helen Davis Method for installing an air supply manifold
DE50208330D1 (de) 2002-01-07 2006-11-16 Edgar Jungmann Feuerrauminterner Verbrennungsluft-Vorwärmer
US9523505B2 (en) * 2009-01-31 2016-12-20 Landy Vent Uk Limited Combustion apparatus
GB0905599D0 (en) 2009-04-01 2009-05-13 Thomas Steve Solid fuel stove
GB2483047B (en) 2010-06-22 2016-05-11 Alley Enterprises Ltd An enclosed granular fuel burning boiler
ES2443087B1 (es) * 2012-08-16 2014-12-05 Luis RUIZ BARBERO Deflector tubular de llama para estufas, calderas, chimeneas y similares, con aprovechamiento calorífico del flujo circulante en su interior
GB201312870D0 (en) 2013-07-18 2013-09-04 Charlton & Jenrick Ltd Fire constructions
US9476593B2 (en) 2014-04-22 2016-10-25 Emmanuel Marcakis Variable secondary air intake device
GB2566290A (en) * 2017-09-07 2019-03-13 A J Wells & Sons Ltd Firebrick and stove

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR978083A (fr) * 1948-11-16 1951-04-09 Busette pour foyer à combustible solide
FR1107684A (fr) * 1953-07-08 1956-01-04 Fond Lallemand Foyer pour tous combustibles solides
GB1472591A (en) * 1975-01-09 1977-05-04 Coal Ind Solid fuel fired heaters
US4111181A (en) * 1977-03-16 1978-09-05 Canney John J Combustion air system
US4316444A (en) * 1978-11-13 1982-02-23 Gullickson Russell C Stove construction
US4672946A (en) * 1986-05-05 1987-06-16 Orrville Products, Inc. Secondary combustion device for woodburning stove
US4854298A (en) * 1986-05-05 1989-08-08 Orrville Products, Inc. Secondary combustion device for woodburning stove
US4917026A (en) * 1989-03-28 1990-04-17 Macmillan Bloedal Limited Debris burner
SE463576B (sv) * 1989-08-04 1990-12-10 Jan Wiklund Braennare foer fasta braenslen, foersedd med anordningar foer aastadkommande av fullstaendig foerbraenning
US5113843A (en) * 1991-04-01 1992-05-19 Alladin Steel Products Combustion device for stoves and fireplaces
US5139008A (en) * 1991-04-19 1992-08-18 Reverso Manufacturing Ltd. Solid fuel burning stove with secondary air heat exchanger

Also Published As

Publication number Publication date
GB9300364D0 (en) 1993-03-03
GB2274162A (en) 1994-07-13
GB2274162B (en) 1996-09-04
WO1994016271A1 (en) 1994-07-21
DE69412999D1 (de) 1998-10-08
GB9400058D0 (en) 1994-03-02
DK0678184T3 (da) 1999-06-07
DE69412999T2 (de) 1999-05-12
EP0678184A1 (de) 1995-10-25
ES2124387T3 (es) 1999-02-01

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