EP0559618B1 - Hot air fireplace - Google Patents

Hot air fireplace Download PDF

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Publication number
EP0559618B1
EP0559618B1 EP93810139A EP93810139A EP0559618B1 EP 0559618 B1 EP0559618 B1 EP 0559618B1 EP 93810139 A EP93810139 A EP 93810139A EP 93810139 A EP93810139 A EP 93810139A EP 0559618 B1 EP0559618 B1 EP 0559618B1
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EP
European Patent Office
Prior art keywords
panel
combustion chamber
air
provision
combustion
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EP93810139A
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German (de)
French (fr)
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EP0559618A1 (en
Inventor
Martin Frei
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Individual
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Individual
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    • 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
    • F24B1/192—Doors; Screens; Fuel guards

Definitions

  • the invention relates to a hot-air fireplace with a combustion chamber which is surrounded by side walls, the combustion chamber is accessible via a front opening, which can be covered by a height-adjustable pane guided in a stationary frame, that - bypassing the one that can be covered by the pane Combustion chamber opening - there is at least one supply channel for the combustion air to be supplied to the combustion chamber, the disc is movably supported transversely to its broad side and pressure elements are available with which the disc can be pressed tightly against the stationary frame in its closed position.
  • the combustion air is supplied through a combustion chamber opening on the front, which can be closed more or less as required by a height-adjustable, usually transparent disc. It shows, however, that the combustion air in the combustion chamber should be regulated and metered for low-pollutant combustion with high efficiency. On the one hand, this requires a closed disc and a combustion air supply, bypassing the usual front opening of the combustion chamber. Even when the disc is closed, however, it cannot be avoided that foreign air that interferes with the front enters the combustion chamber.
  • a fireplace with a front height-adjustable pane is known, means being available to press the pane tightly against a stationary frame.
  • the air required for the combustion process is fed to the combustion chamber separately.
  • a heat exchanger is available for the heat release into the surrounding space, whereby an outer and an inner shell are present.
  • For pressing the window onto the stationary frame in the lower end position there are cranked guide rails on both sides as roller guides for the window frame. This configuration requires a relatively large amount of constructive means.
  • the fireproof seal rubs against the stationary frame during the seal movement, which can wear or damage it.
  • CH-A-675 467 shows a fireplace in which the fire opening can be sealed off by means of a vertically sliding window.
  • the air required to maintain the combustion process is fed to the fireplace in a separate duct. Sealing takes place without movement of the window transversely to its broad side by sloping ramp plates against which the seal comes to rest in the closed position.
  • the object of the invention is to improve a warm air fireplace of the type mentioned at the outset in such a way that the height-adjustable disc can be sealed relative to the combustion chamber with comparatively simple means and a smooth height displacement of the disc is possible without friction of the seal on stationary parts .
  • first pressing members are present, which radially project from a rotatable, vertical rod arranged in the area near the edge of the disc and which cooperate with second pressing elements in the lateral region of the disc frame, the lower rod ends of which are each connected in an articulated manner via connecting elements to a common rotating element mounted in a fixed part and effective springs are provided transversely to the broad side of the pane for lifting the pane from the stationary frame in the relaxed state.
  • the hot-air fireplace 1 contains side walls 2 which are surrounded by an outer steel jacket.
  • the combustion chamber 3 is closed on three sides and open on the front.
  • This front-side combustion chamber opening can be covered by a height-adjustable disk 17.
  • the disc 17 is provided with a disc frame 4 which is guided in a stationary frame 12.
  • a counterweight not shown in the drawing, interacts with the disk 17, so that the disk 17 together with its frame 4 can be raised or lowered with little effort.
  • connection opening 5 On the side for the supply of fresh air to be heated.
  • two hot air outlet openings 6 and a chimney opening 7 are provided for the extraction of the exhaust gases.
  • slot-like combustion air openings 8 on the front below the combustion chamber floor 13, which open laterally into the interior of the combustion chamber 3 through pipelines or channels, bypassing the front opening.
  • a throttle device interacts with these combustion air openings 8. This contains, for example, a linearly movable slide 21 with throttle openings 23. This throttle device can be adjusted either manually or by motor. When the disc 17 is closed, this is the only combustion air supply to the combustion chamber 3.
  • the throttle device can be controlled and regulated in time so that the combustion air supply is adapted to the ongoing combustion process.
  • the pane 17 is preferably made of fireproof glass and is transparent so that it allows an insight into the combustion chamber.
  • the disc 17 is provided with a heat insulation layer along the edge.
  • the pane frame 4 preferably has a U-shape in cross section, the open side being directed towards the interior of the combustion chamber 3.
  • a sealing strip 16 made of refractory material is inserted into the pane frame 4.
  • the pane 17 can also be designed to be pivotable about a vertical axis relative to the pane frame 4 in order to facilitate cleaning.
  • pane frame 4 can be sealed against the stationary frame 12 and thus a supply of unwanted external air to the combustion chamber 3 is avoided, pressure elements are available with which the pane 17 or the pane frame 4 can be pressed tightly against the stationary frame 12, such as this is evident from Figures 2-4.
  • the height-adjustable pane frame 4 slides into two vertical ball rails 10, which are each arranged to the side of the pane frame 4.
  • the stationary frame 12 contains four legs 14 arranged in a rectangle or square, which extend at right angles to the pane surface and which are intended to interact with the sealing strip 16 surrounding the pane frame 4.
  • the sealing strip 16 could also be designed as a metal spring, which results in a tight seal due to the abutment on the end face of the legs 14.
  • the window frame is shown in the relaxed - ie non-sealing - state, with an intermediate space 25 between the sealing strip 16 and the end face of the legs 14.
  • pressure elements are provided, which are described in more detail below.
  • Each of these two rods 18 contains at their upper end first pressing members in the form of a radially projecting nose 20 and at the lower end a radially protruding tab 22.
  • a pull rod 24 engages in each of the two tabs 22, each of which is articulated with a common rotating member Form of a stored in the stationary frame
  • Turntables 26 are connected.
  • the turntable 26 is non-positively attached to a hand lever 28 with which a pivoting movement can be carried out. If this pivot lever 28 is pivoted from the position in FIG. 2 to the right into the position shown in FIG. 3, this causes a counter-pivoting movement of the two rods 18 and with these of the lugs 20.
  • These lugs 20 then each press against second pressing members in the form of stops 30 of the window frame 4, whereby this is moved transversely to its broad side in the direction of arrows A.
  • Characterized the sealing strip 16 is pressed against the front end of the leg 14, so that a seal is made. In this sealing position of the disc 4, combustion air can only get into the interior of the combustion chamber 3 via the throttle openings 8.
  • the window frame 4 is pressed into the relaxed position by means of compression springs 32 when the lugs 20 are lifted off the stops 30.
  • compression springs 32 There are a plurality of spaced apart compression springs 32 which each surround a bolt 34.
  • the threaded end of these bolts 34 is screwed into a bar provided with threaded holes or a nut 19 of the window frame 4.
  • the other bolt end provided with a head 35 is held axially displaceably in a bush 36.
  • FIG. 5 shows an embodiment variant in which a motor drive for the pressing members is provided instead of the hand lever 28.
  • An electric motor 40 is connected to the turntable 26 via a drive rod 42.
  • the remaining structure corresponds to that according to FIGS. 2 and 3.
  • a control device interacts with the height-adjustable pane frame 4 in such a way that the pane frame 4 can only be pressed or relaxed in its closed position.
  • actuating rod 46 the upper end of which is intended to cooperate with the window frame 4 and which is loaded by a spring 48.
  • the lower end cooperates with an electrical switch 50, which in turn causes the motor to receive power only when the window frame 4 is in its lowermost, that is to say closed, position. This prevents the disk 4 from being blocked in intermediate positions.
  • FIG. 6 shows an embodiment variant of the sealing members.
  • a leaf spring 16 'made of flexible metal is present, which protrudes into the frame 4 and is fastened to the pane 17 by an intermediate layer 39.
  • the leg 14 bears against the resilient leaf spring 16 'and thereby causes a seal.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Wick-Type Burners And Burners With Porous Materials (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

In hot-air fireplaces, the combustion space (3) is closed off with a height-adjustable plate (17). The supply of combustion air takes place exclusively through openings, which are assigned a controllable throttling arrangement. In order to prevent the uncontrolled inflow of external air into the combustion chamber (3), the vertically movable plate frame (4) is pressed tightly by pressing members against a stationary frame part (14). To this end, the plate frame (4) is mounted movably transversely to its wide side. As a result, it is possible to prevent the penetration of external air into the combustion chamber and to carry out an accurate proportioning in terms of time and quantity of the air supplied to the combustion chamber (3), with regard to a high degree of efficiency and waste gases which are as low as possible in harmful substances. <IMAGE>

Description

Die Erfindung bezieht sich auf ein Warmluft-Cheminée mit einer Brennkammer die von Seitenwänden umgeben ist, die Brennkammer über eine frontale Oeffnung zugänglich ist, die durch eine höhenverstellbare, in einem stationären Rahmen geführte Scheibe überdeckbar ist, dass - unter Umgehung der durch die Scheibe überdeckbare Brennkammer-Oeffnung - mindestens ein Zufuhrkanal für die der Brennkammer zuzuführende Verbrennungsluft vorhanden ist, die Scheibe quer zu ihrer Breitseite beweglich abgestützt ist und Anpressorgane vorhanden sind, mit denen die Scheibe in ihrer Schliesslage gegen den stationären Rahmen dicht anpressbar ist.The invention relates to a hot-air fireplace with a combustion chamber which is surrounded by side walls, the combustion chamber is accessible via a front opening, which can be covered by a height-adjustable pane guided in a stationary frame, that - bypassing the one that can be covered by the pane Combustion chamber opening - there is at least one supply channel for the combustion air to be supplied to the combustion chamber, the disc is movably supported transversely to its broad side and pressure elements are available with which the disc can be pressed tightly against the stationary frame in its closed position.

Bei konventionellen Warmluft-Cheminées erfolgt die Zufuhr der Verbrennungsluft über eine frontseitige Brennkammeröffnung, die durch eine höhenverstellbare, üblicherweise durchsichtige Scheibe je nach Bedarf mehr oder weniger geschlossen werden kann. Es zeigt sich indessen, dass für eine schadstoffarme Verbrennung mit hohem Wirkungsgrad die Verbrennungsluft der Brennkammer geregelt und dosiert werden sollte. Dies bedingt einerseits eine geschlossene Scheibe und eine Verbrennungsluftzufuhr, unter Umgehung der üblichen frontseitigen Brennkammeröffnung. Auch bei geschlossener Scheibe kann aber nicht vermieden werden, dass über Spalten frontseitig störende Fremdluft in die Brennkammer eindringt.In conventional hot-air fireplaces, the combustion air is supplied through a combustion chamber opening on the front, which can be closed more or less as required by a height-adjustable, usually transparent disc. It shows, however, that the combustion air in the combustion chamber should be regulated and metered for low-pollutant combustion with high efficiency. On the one hand, this requires a closed disc and a combustion air supply, bypassing the usual front opening of the combustion chamber. Even when the disc is closed, however, it cannot be avoided that foreign air that interferes with the front enters the combustion chamber.

Einem luftdichten Abschluss der Scheibe steht die Forderung entgegen, dass die Scheibe zum Einlegen von Brennmaterial in der Höhe leichtgängig verschoben werden soll.The requirement is an airtight closure of the pane counter that the disc for loading fuel should be moved easily in height.

Aus der GB-A-2 206 962 ist eine Feuerstelle mit einer frontseitig höhenverstellbaren Scheibe bekannt, wobei Mittel vorhanden sind, um die Scheibe dicht gegen einen ortsfesten Rahmen anzupressen. Die für den Verbrennungsvorgang erforderliche Luft wird der Brennkammer separat zugeführt. Für die Wäremabgabe in den Umgebungsraum ist ein Wärmeaustauscher vorhanden, wobei eine äussere und eine innere Schale vorhanden sind. Für das Anpressen der Scheibe an den ortsfesten Rahmen in der untern Endlage sind auf beiden Seiten abgekröpfte Führungsschienen als Rollenführungen für den Scheibenrahmen vorhanden. Diese Ausgestaltung erfordert einen verhältnismässig grossen Aufwand an konstruktiven Mitteln. Zudem reibt die feuerfeste Dichtung am ortsfesten Rahmen während der Dichtungsbewegung, wodurch sie sich abnutzt oder beschädigt werden kann.From GB-A-2 206 962 a fireplace with a front height-adjustable pane is known, means being available to press the pane tightly against a stationary frame. The air required for the combustion process is fed to the combustion chamber separately. A heat exchanger is available for the heat release into the surrounding space, whereby an outer and an inner shell are present. For pressing the window onto the stationary frame in the lower end position, there are cranked guide rails on both sides as roller guides for the window frame. This configuration requires a relatively large amount of constructive means. In addition, the fireproof seal rubs against the stationary frame during the seal movement, which can wear or damage it.

Die CH-A-675 467 zeigt ein Cheminée, bei dem die Feueröffnung mittels eines vertikal verschiebbaren Fensters dicht abgeschlossen werden kann. Die zur Aufrechterhaltung des Verbrennungsprozesses erforderliche Luft wird der Feuerstelle in einem separaten Kanal zugeführt. Die Abdichtung erfolgt ohne Bewegung des Fensters quer zu seiner Breitseite durch schräge Auflaufbleche gegen welche die Dichtung in der Schliesslage zur Auflage kommt.CH-A-675 467 shows a fireplace in which the fire opening can be sealed off by means of a vertically sliding window. The air required to maintain the combustion process is fed to the fireplace in a separate duct. Sealing takes place without movement of the window transversely to its broad side by sloping ramp plates against which the seal comes to rest in the closed position.

Mit der Erfindung soll die Aufgabe gelöst werden, ein Warmluft-Cheminee der eingangs erwähnten Art derart weiterzubilden, dass die höhenverstellbare Scheibe relativ zur Brennkammer mit vergleichsweise einfachen Mitteln dicht abgeschlossen werden kann und eine leichtgängige Höhenverschiebung der Scheibe ohne Reibung der Dichtung an stationären Teilen möglich ist.The object of the invention is to improve a warm air fireplace of the type mentioned at the outset in such a way that the height-adjustable disc can be sealed relative to the combustion chamber with comparatively simple means and a smooth height displacement of the disc is possible without friction of the seal on stationary parts .

Diese Aufgabe wird dadurch gelöst, dass erste Anpressorgane vorhanden sind, die von je einer im randnahen Bereich der Scheibe angeordneten, verdrehbaren, vertikalen Stange radial abragen und die mit zweiten Apressorganen im seitlichen Bereich des Scheibenrahmens zusammenwirken, die untern Stangenenden je über Verbindungsorgane mit einem gemeinsamen in einem ortsfesten Teil gelagerten Drehorgan gelenkig verbunden sind und quer zur Breitseite der Scheibe wirksame Federn zum Abheben der Scheibe vom stationären Rahmen im entspannten Zustand vorhanden sind.This object is achieved in that the first pressing members are present, which radially project from a rotatable, vertical rod arranged in the area near the edge of the disc and which cooperate with second pressing elements in the lateral region of the disc frame, the lower rod ends of which are each connected in an articulated manner via connecting elements to a common rotating element mounted in a fixed part and effective springs are provided transversely to the broad side of the pane for lifting the pane from the stationary frame in the relaxed state.

Dadurch gelingt es, durch die Abdichtung der Scheibe eine unerwünschte Fremdluftzufuhr zur Verbrennungszone zu vermeiden, um einen hohen Wirkungsgrad und geringen Schadstoffausstoss zu erreichen. Da die Scheibe im entspannten Zustand von den stationären Teilen unter Federdruck abgehoben ist, lässt sie sich in der nicht-dichtenden Lage zum Einfüllen von Brennmaterial leichtgängig verschieben ohne dass die Dichtung an ortsfesten Teilen streift.In this way it is possible to avoid unwanted external air supply to the combustion zone by sealing the disc in order to achieve high efficiency and low pollutant emissions. Since the disc is lifted from the stationary parts under spring pressure in the relaxed state, it can be easily moved in the non-sealing position for filling with fuel without the seal rubbing against stationary parts.

In der Zeichnung sind zwei Ausführungsbeispiele des Erfindungsgegenstandes dargestellt und werden nachfolgend näher erläutert.The drawing shows two exemplary embodiments of the subject matter of the invention and are explained in more detail below.

Es zeigen:

Fig. 1
eine perspektivische Ansicht eines Warmluft-Cheminées in vereinfachter Darstellung
Fig. 2
einen Querschnitt durch die höhenverstellbare Scheibe mit Rahmen und mit Anpressorganen im nicht-dichtenden Zustand.
Fig. 3
einen Querschnitt durch die höhenverstellbare Scheibe mit Rahmen und mit Anpressorganen im abgedichteten Zustand, nach der Linie III-III in Fig. 5.
Fig. 4
einen Querschnitt durch die Abdichtorgane und mit Federmitteln zum Abheben der Scheibe in eine nicht-dichtende Lage
Fig. 5
eine schematische Darstellung der Anpressorgane zum dichtenden Anpressen der Scheibe an den stationären Rahmen
Fig. 6
einen Querschnitt durch eine Ausführungsvariante der Dichtorgane.
Show it:
Fig. 1
a perspective view of a hot air fireplace in a simplified representation
Fig. 2
a cross section through the height-adjustable disc with frame and with pressure elements in the non-sealing state.
Fig. 3
a cross section through the height-adjustable disc with frame and with pressing elements in the sealed state, along the line III-III in Fig. 5th
Fig. 4
a cross section through the sealing members and with spring means for lifting the disc in a non-sealing position
Fig. 5
is a schematic representation of the pressing members for sealingly pressing the window onto the stationary frame
Fig. 6
a cross section through an embodiment of the sealing members.

Das Warmluft-Cheminée 1 gemäss Figur 1 enthält Seitenwände 2, die von einem äusseren Stahlmantel umgeben sind. Die Brennkammer 3 ist auf drei Seiten geschlossen und frontseitig offen.
Diese frontseitige Brennkammer-Oeffnung lässt sich durch eine höhenverstellbare Scheibe 17 überdecken. Die Scheibe 17 ist mit einem Scheibenrahmen 4 versehen, der in einem stationären Rahmen 12 geführt ist. Mit der Scheibe 17 wirkt ein in der Zeichnung nicht näher dargestelltes Gegengewicht zusammen, sodass die Scheibe 17 samt ihrem Rahmen 4 mit geringem Kraftaufwand angehoben oder abgesenkt werden kann.The hot-air fireplace 1 according to FIG. 1 contains side walls 2 which are surrounded by an outer steel jacket. The combustion chamber 3 is closed on three sides and open on the front.
This front-side combustion chamber opening can be covered by a height-adjustable disk 17. The disc 17 is provided with a disc frame 4 which is guided in a stationary frame 12. A counterweight, not shown in the drawing, interacts with the disk 17, so that the disk 17 together with its frame 4 can be raised or lowered with little effort.

Im Unterteil 11 befindet sich seitlich eine Anschlussöffnung 5 für die Zufuhr von zu erwärmender Frischluft. Auf der Oberseite sind zwei Warmluft-Austrittöffnungen 6 sowie eine Kaminöffnung 7 für den Abzug der Abgase vorgesehen. Für eine zeitlich und mengenmässige geregelte Zufuhr von Verbrennungsluft zur Brennkammer 3 sind frontseitig unterhalb des Brennraumbodens 13 schlitzartige Verbrennungsluft-Oeffnungen 8 vorhanden, welche durch Rohrleitungen oder Kanäle seitlich unter Umgehung der frontseitigen Oeffnung in das Innere der Brennkammer 3 einmünden. Mit diesen Verbrennungsluft-Oeffnungen 8 wirkt eine Drosseleinrichtung zusammen. Diese enthält beispielsweise einen linear beweglichen Schieber 21 mit Drosselöffnungen 23. Diese Drosseleinrichtung kann entweder manuell oder motorisch verstellt werden. Bei geschlossener Scheibe 17 ist dies die einzige Verbrennungsluft-Zufuhr zur Brennkammer 3. Die Drosseleinrichtung lässt sich zeitlich so steuern und regeln, dass die Verbrennungsluft-Zufuhr dem fortschreitenden Verbrennungsvorgang angepasst wird.In the lower part 11 there is a connection opening 5 on the side for the supply of fresh air to be heated. On the top, two hot air outlet openings 6 and a chimney opening 7 are provided for the extraction of the exhaust gases. For a temporally and quantitatively controlled supply of combustion air to the combustion chamber 3, there are slot-like combustion air openings 8 on the front below the combustion chamber floor 13, which open laterally into the interior of the combustion chamber 3 through pipelines or channels, bypassing the front opening. A throttle device interacts with these combustion air openings 8. This contains, for example, a linearly movable slide 21 with throttle openings 23. This throttle device can be adjusted either manually or by motor. When the disc 17 is closed, this is the only combustion air supply to the combustion chamber 3. The throttle device can be controlled and regulated in time so that the combustion air supply is adapted to the ongoing combustion process.

Die Scheibe 17 besteht vorzugsweise aus feuerfestem Glas und ist durchsichtig, sodass sie Einblick in den Verbrennungsraum erlaubt. Die Scheibe 17 ist entlang des Randes mit einer Wärmeisolationsschicht versehen. Der Scheibenrahmen 4 hat vorzugsweise im Querschnitt eine U-Form, wobei die offene Seite gegen den Innenraum der Brennkammer 3 gerichtet ist. In den Scheibenrahmen 4 ist eine aus feuerfestem Material bestehende Dichtleiste 16 eingesetzt.The pane 17 is preferably made of fireproof glass and is transparent so that it allows an insight into the combustion chamber. The disc 17 is provided with a heat insulation layer along the edge. The pane frame 4 preferably has a U-shape in cross section, the open side being directed towards the interior of the combustion chamber 3. A sealing strip 16 made of refractory material is inserted into the pane frame 4.

Die Scheibe 17 kann ausseredem durch Scharniere um eine Vertikalachse relativ zum Scheibenrahmen 4 schwenkbar ausgebildet werden, um die Reinigung zu erleichtern.The pane 17 can also be designed to be pivotable about a vertical axis relative to the pane frame 4 in order to facilitate cleaning.

Damit der Scheibenrahmen 4 gegenüber dem stationären Rahmen 12 dicht abgeschlossen werden kann und damit eine Zufuhr von unerwünschter Fremdluft zur Brennkammer 3 vermieden wird, sind Anpressorgane vorhanden, mit denen die Scheibe 17 bzw. der Scheibenrahmen 4 dicht gegen den stationären Rahmen 12 andrückbar ist, wie dies aus den Figuren 2-4 hervorgeht.So that the pane frame 4 can be sealed against the stationary frame 12 and thus a supply of unwanted external air to the combustion chamber 3 is avoided, pressure elements are available with which the pane 17 or the pane frame 4 can be pressed tightly against the stationary frame 12, such as this is evident from Figures 2-4.

Der höhenverstellbare Scheibenrahmen 4 gleitet in zwei vertikale Kugelschienen 10 die je seitlich des Scheibenrahmens 4 angeordnet sind. Der stationäre Rahmen 12 enthält vier in einem Rechteck oder Quadrat angeordnete Schenkel 14, die sich rechtwinklig zur Scheibenfläche erstrecken und die zum Zusammenwirken mit der den Scheibenrahmen 4 umgebenden Dichtleiste 16 bestimmt sind. Die Dichtleiste 16 könnte auch als Metallfeder ausgebildet sein, welche durch das Anliegen an der Stirnseite der Schenkel 14 einen dichten Abschluss ergibt.The height-adjustable pane frame 4 slides into two vertical ball rails 10, which are each arranged to the side of the pane frame 4. The stationary frame 12 contains four legs 14 arranged in a rectangle or square, which extend at right angles to the pane surface and which are intended to interact with the sealing strip 16 surrounding the pane frame 4. The sealing strip 16 could also be designed as a metal spring, which results in a tight seal due to the abutment on the end face of the legs 14.

In Fig. 2 ist der Scheibenrahmen im entspannten - also nichtdichtenden - Zustand dargestellt, wobei sich zwischen der Dichtleiste 16 und der Stirnfläche der Schenkel 14 je ein Zwischenraum 25 befindet. Um den Scheibenrahmen 4 gegen den Schenkel 14 anzudrücken und dadurch eine Abdichtung zu bewirken, sind Anpressorgane vorhanden, die nachfolgend näher beschrieben werden. Beidseits des Scheibenrahmens 4 ist je eine vertikale Stange 18 vorhanden, die je um eine vertikale Achse in mindestens einem Lagerkörper 44 schwenkbar gelagert ist. Jede dieser beiden Stangen 18 enthält an ihrem oberen Ende erste Anpressorgane in Form je einer radial abstehenden Nase 20 sowie am untern Ende eine radial abragende Lasche 22. In die beiden Laschen 22 greift je eine Zugstange 24 ein, die je gelenkig mit einem gemeinsamen Drehorgan in Form eines im stationären Rahmen gelagerten Drehtellers 26 verbunden sind. Der Drehteller 26 ist kraftschlüssig an einem Handhebel 28 befestigt mit dem eine Schwenkbewegung ausgeführt werden kann. Wenn dieser Schwenkhebel 28 von der in Fig. 2 ausgehenden Lage nach rechts in die in Fig. 3 dargestellte Lage verschwenkt wird, bewirkt dies eine gegenläufige Schwenkbewegung der beiden Stangen 18 und mit diesen der Nasen 20. Diese Nasen 20 drücken sodann je gegen zweite Anpressorgane in Form von Anschlägen 30 des Scheibenrahmens 4, wodurch dieser quer zu seiner Breitseite in Richtung der Pfeile A bewegt wird. Dadurch wird die Dichtleiste 16 gegen das stirnseitige Ende des Schenkels 14 angedrückt, sodas eine Abdichtung erfolgt. In dieser Dichtungslage der Scheibe 4 kann Verbrennungsluft einzig über die drosselbaren Oeffnungen 8 in das Innere der Brennkammer 3 gelangen.2, the window frame is shown in the relaxed - ie non-sealing - state, with an intermediate space 25 between the sealing strip 16 and the end face of the legs 14. In order to press the pane frame 4 against the leg 14 and thereby effect a seal, pressure elements are provided, which are described in more detail below. There is a vertical rod 18 on each side of the pane frame 4, which is each pivotably mounted about a vertical axis in at least one bearing body 44. Each of these two rods 18 contains at their upper end first pressing members in the form of a radially projecting nose 20 and at the lower end a radially protruding tab 22. A pull rod 24 engages in each of the two tabs 22, each of which is articulated with a common rotating member Form of a stored in the stationary frame Turntables 26 are connected. The turntable 26 is non-positively attached to a hand lever 28 with which a pivoting movement can be carried out. If this pivot lever 28 is pivoted from the position in FIG. 2 to the right into the position shown in FIG. 3, this causes a counter-pivoting movement of the two rods 18 and with these of the lugs 20. These lugs 20 then each press against second pressing members in the form of stops 30 of the window frame 4, whereby this is moved transversely to its broad side in the direction of arrows A. Characterized the sealing strip 16 is pressed against the front end of the leg 14, so that a seal is made. In this sealing position of the disc 4, combustion air can only get into the interior of the combustion chamber 3 via the throttle openings 8.

Aus Fig. 4 ist ersichtlich, dass der Scheibenrahmen 4 mittels Druckfedern 32 in die entspannte Lage gedrückt wird, wenn die Nasen 20 von den Anschlägen 30 abgehoben sind. Es sind mehrere voneinander distanzierte Druckfedern 32 vorhanden, welche je einen Bolzen 34 umgeben. Das Gewindeende dieser Bolzen 34 wird in eine mit Gewindebohrungen versehene Leiste oder eine Mutter 19 des Scheibenrahmens 4 eingeschraubt. Das andere mit einem Kopf 35 versehene Bolzenende ist in einer Buchse 36 axial verschiebbar gehalten. Wenn der Scheibenrahmen 4 gegen die Schenkel 14 angedrückt wird, bewegt sich der Bolzen 34 in den Hohlraum 37 oberhalb des Bolzenkopfes 35 hinein, wobei die Druckfedern 32 zusammengedrückt werden. In der nicht-dichtenden Lage lässt sich die Scheibe samt ihrem Rahmen 4 vertikal leichtgängig bewegen.It can be seen from FIG. 4 that the window frame 4 is pressed into the relaxed position by means of compression springs 32 when the lugs 20 are lifted off the stops 30. There are a plurality of spaced apart compression springs 32 which each surround a bolt 34. The threaded end of these bolts 34 is screwed into a bar provided with threaded holes or a nut 19 of the window frame 4. The other bolt end provided with a head 35 is held axially displaceably in a bush 36. When the window frame 4 is pressed against the legs 14, the bolt 34 moves into the cavity 37 above the bolt head 35, the compression springs 32 being compressed. In the non-sealing position, the pane and its frame 4 can be moved vertically smoothly.

In Fig. 5 ist eine Ausführungsvariante dargestellt, bei welcher anstelle des Handhebels 28 ein motorischer Antrieb für die Anpressorgane vorhanden ist. Ein Elektromotor 40 ist über eine Antriebsstange 42 mit dem Drehteller 26 verbunden. Der übrige Aufbau entspricht demjenigen gemäss den Figuren 2 und 3. Mit dem höhenverstellbaren Scheibenrahmen 4 wirkt eine Steuereinrichtung in der Weise zusammen, dass sich der Scheibenrahmen 4 nur in seiner geschlossenen Lage anpressen oder entspannen lässt. Zu diesem Zwecke ist eine Betätigungsstange 46 vorhanden, deren oberes Ende mit dem Scheibenrahmen 4 zum Zusammenwirken bestimmt ist und die durch eine Feder 48 belastet ist. Das untere Ende wirkt mit einem elektrischen Schalter 50 zusammen, der seinerseits bewirkt, dass der Motor nur dann Strom erhält, wenn sich der Scheibenrahmen 4 in seiner untersten, also geschlossenen Lage befindet. Dadurch wird verhindert, dass die Scheibe 4 in Zwischenstellungen blockiert werden kann.5 shows an embodiment variant in which a motor drive for the pressing members is provided instead of the hand lever 28. An electric motor 40 is connected to the turntable 26 via a drive rod 42. The remaining structure corresponds to that according to FIGS. 2 and 3. A control device interacts with the height-adjustable pane frame 4 in such a way that the pane frame 4 can only be pressed or relaxed in its closed position. For this purpose there is an actuating rod 46, the upper end of which is intended to cooperate with the window frame 4 and which is loaded by a spring 48. The lower end cooperates with an electrical switch 50, which in turn causes the motor to receive power only when the window frame 4 is in its lowermost, that is to say closed, position. This prevents the disk 4 from being blocked in intermediate positions.

Fig. 6 zeigt eine Ausführungsvariante der Dichtungsorgane. An Stelle der aus feuerfestem Material bestehenden Dichtleiste 16 ist hier eine aus flexiblem Metall bestehende Blattfeder 16' vorhanden, die in den Rahmen 4 hineinragt und durch eine Zwischenlage 39 an der Scheibe 17 befestigt ist. Beim Andrücken der Scheibe 17 gegen den stationären Rahmen liegt der Schenkel 14 gegen die nachgiebige Blattfeder 16' an und bewirkt dadurch eine Abdichtung.6 shows an embodiment variant of the sealing members. Instead of the sealing strip 16 made of refractory material, a leaf spring 16 'made of flexible metal is present, which protrudes into the frame 4 and is fastened to the pane 17 by an intermediate layer 39. When the pane 17 is pressed against the stationary frame, the leg 14 bears against the resilient leaf spring 16 'and thereby causes a seal.

Claims (4)

  1. Hot-air fireplace having a combustion chamber (3) which is enclosed by side walls (2), the combustion chamber (3) being accessible via a front opening which can be covered over by a vertically adjustable panel (17) guided in a stationary frame (12), provision being made - bypassing the combustion-chamber opening to be covered over by the panel (17) - for at least one feed duct for the combustion air which is to be fed to the combustion chamber (3), the panel (17) being supported transversely with respect to its broad side, and provision being made for press-on members (20, 30) by means of which the panel (17), in its closed position, can be pressed in a sealed manner against the stationary frame (12), characterized in that provision is made for first press-on members (20) which project radially from in each case one rotatable, vertical rod (18) arranged in the vicinity of the border of the panel (17) and which interact with second press-on members (30) in the lateral region of the panel frame (4), the bottom rod ends are connected in an articulated manner, in each case via connecting members (24), to a common rotary member (26) mounted in a stationary part, and provision is made for springs (32) which act transversely with respect to the broad side of the panel (17) and are intended for detaching the panel (17) from the stationary frame (12) in the relieved state.
  2. Hot-air fireplace according to Claim 1, characterized in that a pivotable hand lever (28) is connected to the rotary member (26).
  3. Hot-air fireplace according to Claim 1, characterized in that an electric drive motor (40) is connected to the rotary member (26) and provision is made for an electric switch (50) which is assigned to the drive motor (40) and permits the drive motor (40) to be operated only when the panel is in the closed position.
  4. Hot-air fireplace according to one of Claims 1-3, characterized in that, for sealing purposes, provision is made for a metallic leaf spring (16') which is connected to the panel (17) via an intermediate layer (39) and, for sealing, rests against a projecting leg (14) of the stationary frame.
EP93810139A 1992-03-05 1993-02-26 Hot air fireplace Expired - Lifetime EP0559618B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH69892 1992-03-05
CH698/92 1992-03-05

Publications (2)

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EP0559618A1 EP0559618A1 (en) 1993-09-08
EP0559618B1 true EP0559618B1 (en) 1995-10-25

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Application Number Title Priority Date Filing Date
EP93810139A Expired - Lifetime EP0559618B1 (en) 1992-03-05 1993-02-26 Hot air fireplace

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EP (1) EP0559618B1 (en)
AT (1) ATE129556T1 (en)
DE (1) DE59300802D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1013297A3 (en) * 2000-02-23 2001-11-06 Concept Et Forme Sprl Multi fireplace.
DE102004021712A1 (en) * 2004-04-30 2005-11-24 Cera-Design By Britta Von Tasch Gmbh Oven or chimney and method of closing a main fireplace access
DE102008025155A1 (en) * 2008-05-26 2009-12-03 Stachel Ag Chimney insert heating collector for obtaining e.g. industrial water, in weekend cottage, has collector unit moved upwardly by chimney insert, where collector is attached to chimney insert as factory-provided fitting
DE102008025156A1 (en) * 2008-05-26 2009-12-03 Stachel Ag Glass ceramic disk heater i.e. double-walled, water bearing glass ceramic disk, for obtaining industrial water in e.g. weekend cottage, has connections to feed line and return line, where heater is provided in front of windscreen of chimney

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2206962A (en) * 1987-03-13 1989-01-18 Vermont Castings Fireplace doors

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2209662B (en) * 1987-09-11 1990-12-12 Scot Young Serv Syst Ltd Sweep mop pad holder
CH675467A5 (en) * 1987-12-14 1990-09-28 Rueegg Chemineebau Ag Fireplace heater with incorporated casing - which has closable aperture and air duct for combustion chamber supply
FR2654496B1 (en) * 1989-11-13 1992-02-28 Belot Andre DEVICE FOR CLOSING THE FIREPLACE OPENING OF A FIREPLACE WITH A CLOSED FIREPLACE AND A FIREPLACE WITH A SYSTEM FOR CONTROLLING THE DRAFT ADJUSTMENT FLAP PROVIDED WITH SUCH A DEVICE.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2206962A (en) * 1987-03-13 1989-01-18 Vermont Castings Fireplace doors

Also Published As

Publication number Publication date
ATE129556T1 (en) 1995-11-15
DE59300802D1 (en) 1995-11-30
EP0559618A1 (en) 1993-09-08

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