EP0976986B1 - Cooking apparatus with a cooled lamp - Google Patents

Cooking apparatus with a cooled lamp Download PDF

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Publication number
EP0976986B1
EP0976986B1 EP99114517A EP99114517A EP0976986B1 EP 0976986 B1 EP0976986 B1 EP 0976986B1 EP 99114517 A EP99114517 A EP 99114517A EP 99114517 A EP99114517 A EP 99114517A EP 0976986 B1 EP0976986 B1 EP 0976986B1
Authority
EP
European Patent Office
Prior art keywords
light housing
light
cooking appliance
housing
cooling air
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
EP99114517A
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German (de)
French (fr)
Other versions
EP0976986A2 (en
EP0976986A3 (en
Inventor
Peter Dipl.-Ing. Mallinger
Peter Kellermann
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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Publication date
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Publication of EP0976986A2 publication Critical patent/EP0976986A2/en
Publication of EP0976986A3 publication Critical patent/EP0976986A3/en
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Publication of EP0976986B1 publication Critical patent/EP0976986B1/en
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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
    • F24C15/00—Details
    • F24C15/006—Arrangements for circulation of cooling air
    • 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
    • F24C15/00—Details
    • F24C15/008—Illumination for oven cavities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/65—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air the gas flowing in a closed circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/30—Lighting for domestic or personal use
    • F21W2131/307—Lighting for domestic or personal use for ovens

Definitions

  • the present invention relates to a cooking appliance, in particular a pyrolysis cooking appliance, with a Cooking space by a lamp with a lamp arranged in a lamp housing is illuminated, and with a cooling fan, the heated cooling air through an exhaust duct presses out of the cooking appliance and cools the lamp by means of the cooling air, as well as a correspondingly designed cooking appliance lamp.
  • Such a cooking device is known from the document DE 297 18 343 U1, the Luminaire housing of the lighting device in a region of a section in the Cooking space wall is attached.
  • the space formed by the lamp housing is the cooking space closed by a translucent cover.
  • the luminaire housing is provided with a connection for a cooling air line.
  • the Connected cooling air line leads at least one generated by the cooling fan Partial air flow through the luminaire housing, the lamp being washed by the cooling air becomes.
  • the luminaire housing connection is made from a neck of the luminaire housing designed as a connecting piece for the cooling air line. This exists, for example from a piece of tubing made of a heat-resistant material and is on the neck attachable.
  • the object of the present invention is to provide a cooking appliance according to the preamble of Claim 1 to perform the cooling of the lamp with simple means.
  • the wall of the blow-out duct has an opening, through which the lamp housing protrudes into the outlet duct.
  • the cooling air also hits without pressure loss and without Energy loss directly on the lamp to be cooled. The cooling effect is therefore excellent. If, in addition to the cooling air, vapors are also led through the exhaust duct care must be taken to ensure that the luminaire housing or the said opening of the blow-out duct is arranged away from the vapor flow. If necessary, the Use the ceiling of the cooking space as the wall of the blow-out shaft. If by arrangement the luminaire on the blow-out duct affects the coupling of the light into the cooking space is, the light emanating from the lamp can be directed to a better place in the cooking space
  • the luminaire housing advantageously has an inlet opening and an outlet opening, that protrude into the exhaust duct. On the one hand, this means blowing out the cooling air only slightly disturbed by the discharge duct and on the other hand an optimal cooling effect the lamp guaranteed.
  • the blowing of the cooling air out of the outlet duct hardly disturbed and the cooling effect for the cooking appliance hardly impaired.
  • it is entirely sufficient to cool the lamp if only the air flap is used protrudes into the outlet duct.
  • the air guide flap is easy to manufacture in terms of production technology and only slightly affects the lighting behavior of the lamp, even if this eliminates a small area of the luminaire reflector.
  • the cross section of an inlet opening of the luminaire housing is chosen larger than that of a corresponding outlet opening.
  • a sufficient air gap to cool the lamp for example through the Cooling air, provided.
  • the cooling air flowing along the wall of the exhaust duct is partly through the air gap, for example, on the base of the lamp and the corresponding Connection lines directed to their additional cooling.
  • a cooling effect can also result from the fact that warm air through the air gap in the Discharge duct rises and is discharged.
  • the oven muffle 5 are known heating elements assigned to the cooking mode (not shown). Furthermore, the oven 1 has Pyrolysis operation necessary means, in particular through a suitable thermal insulation (Not shown).
  • the furnace muffle 5 can be closed at the front by a hinged furnace door 7. One sucks above the furnace muffle 5 through several housing openings 9 arranged cooling air blower 11 cooling air in the oven 1. The cooling air is from Cooling air blower 11 is pressed into a cooling air shaft 13 open at the front and enters warms the front below a front panel 15 of the oven 1 and above Oven door 7 out of the housing 3.
  • a lamp 18 for illuminating it supported.
  • the lamp 18 has a box-shaped metallic Luminaire housing 19 on, the muffle side open and therefore by one the housing 19 held glass plate 21 is closed.
  • a known light bulb 23 is arranged, which is essentially extends parallel to the muffle cover 17 (Fig. 1, Fig. 2).
  • a shaft floor 25 runs parallel above it of the cooling air shaft 13.
  • the shaft floor 25 has a suitable floor opening 27 on (Fig. 3), the free cross section of about the size of the lamp housing 19th equivalent.
  • the bottom of the box-shaped luminaire housing that serves as a reflector base 19 is approximately in the plane of the shaft floor 25 (Fig. 1, 2) and closes a large part of the bottom opening 27.
  • a first is from the lamp housing 19 Air guide flap 29 and a smaller second air guide flap shortly behind 31 stung.
  • an outlet opening 35 is formed in the reflector base.
  • the free cross-section of the inlet opening 33 selected larger than that of the outlet opening 35.

Abstract

The wall of the blowout shaft has an aperture, through which the light housing (19) with a light in (23) extends into the shaft. The light housing has inlet and outlet apertures, which extend into the blowout shaft, allowing through flow of the light housing with cool air. From the light housing extends a first air guide flap (29) into the area of an inlet aperture of the housing, and conducts a part of the air blown through the blowout shaft into the light housing.

Description

Die vorliegende Erfindung betrifft ein Gargerät, insbesondere Pyrolysegargerät, mit einem Garraum, der von einer Leuchte mit einer in einem Leuchtengehäuse angeordneten Lampe beleuchtet ist, und mit einem Kühlgebläse, das erwärmte Kühlluft durch einen Ausblasschacht aus dem Gargerät drückt und mittels der Kühlluft die Leuchte kühlt, sowie weiterhin eine entsprechend ausgebildete Gargeräteleuchte.The present invention relates to a cooking appliance, in particular a pyrolysis cooking appliance, with a Cooking space by a lamp with a lamp arranged in a lamp housing is illuminated, and with a cooling fan, the heated cooling air through an exhaust duct presses out of the cooking appliance and cools the lamp by means of the cooling air, as well as a correspondingly designed cooking appliance lamp.

Ein derartiges Gargerät ist bekannt aus der Druckschrift DE 297 18 343 U1, wobei das Leuchtengehäuse der Beleuchtungsvorrichtung in einem Bereich eines Ausschnitts in der Garraumwand angebracht ist. Der vom Leuchtengehäuse gebildete Raum ist zum Garraum hin von einer lichtdurchlässigen Abdeckung verschlossen. Zur Kühlung der Leuchte ist das Leuchtengehäuse mit einem Anschluß für eine Kühlluftleitung versehen. Die angeschlossene Kühlluftleitung führt wenigstens einen von dem Kühlgebläse erzeugten Teilluftstrom durch das Leuchtengehäuse, wobei die Lampe von der Kühlluft umspült wird. Dabei ist der leuchtengehäuseseitige Anschluß aus einer Aushalsung des Leuchtengehäuses als Anschlußstutzen für die Kühlluftleitung ausgebildet. Diese besteht beispielsweise aus einem Schlauchstück eines hitzebeständigen Materials und ist auf die Aushalsung aufsteckbar.Such a cooking device is known from the document DE 297 18 343 U1, the Luminaire housing of the lighting device in a region of a section in the Cooking space wall is attached. The space formed by the lamp housing is the cooking space closed by a translucent cover. For cooling the lamp the luminaire housing is provided with a connection for a cooling air line. The Connected cooling air line leads at least one generated by the cooling fan Partial air flow through the luminaire housing, the lamp being washed by the cooling air becomes. The luminaire housing connection is made from a neck of the luminaire housing designed as a connecting piece for the cooling air line. This exists, for example from a piece of tubing made of a heat-resistant material and is on the neck attachable.

Aufgabe der vorliegenden Erfindung ist es, bei einem Gargerät nach dem Oberbegriff des Patentanspruches 1 die Kühlung der Leuchte mit einfachen Mitteln durchzuführen.The object of the present invention is to provide a cooking appliance according to the preamble of Claim 1 to perform the cooling of the lamp with simple means.

Erfindungsgemäß ist dies bei einem Gargerät nach dem Oberbegriff des Patentanspruches 1 dadurch erreicht, daß die Wand des Ausblasschachtes eine Öffnung aufweist, durch die das Leuchtengehäuse in den Ausblasschacht ragt. Durch die unmittelbare Plazierung des Leuchtengehäuses am bzw. im Ausblasschacht kann auf die Montage oder die Ausbildung von Anschlußleitungen verzichtet werden, die den Ausblasschacht mit dem Leuchtengehäuse verbinden. Die Kühlluft trifft zudem ohne Druckverlust und ohne Energieverlust unmittelbar auf die zu kühlende Leuchte. Die Kühlwirkung ist deshalb ausgezeichnet. Falls neben der Kühlluft auch Wrasen durch den Ausblasschacht geführt wird, ist darauf zu achten, daß das Leuchtengehäuse bzw. die besagte Öffnung des Ausblasschachtes abseits vom Wrasenstrom angeordnet ist. Gegebenenfalls kann auch die Decke des Garraumes als Wand des Ausblasschachtes dienen. Falls durch die Anordnung der Leuchte am Ausblaschacht die Einkopplung des Lichtes in den Garraum beeinträchtigt ist, kann mittels eines Lichtleiters das von der Lampe ausgehende Licht an eine bessere Stelle in den Garraum geführt werdenThis is according to the invention in a cooking appliance according to the preamble of the claim 1 achieved in that the wall of the blow-out duct has an opening, through which the lamp housing protrudes into the outlet duct. Through the immediate placement of the luminaire housing on or in the outlet duct can be mounted or the formation of connecting lines, which the blow-out duct with connect the lamp housing. The cooling air also hits without pressure loss and without Energy loss directly on the lamp to be cooled. The cooling effect is therefore excellent. If, in addition to the cooling air, vapors are also led through the exhaust duct care must be taken to ensure that the luminaire housing or the said opening of the blow-out duct is arranged away from the vapor flow. If necessary, the Use the ceiling of the cooking space as the wall of the blow-out shaft. If by arrangement the luminaire on the blow-out duct affects the coupling of the light into the cooking space is, the light emanating from the lamp can be directed to a better place in the cooking space

Vorteilhafterweise weist das Leuchtengehäuse eine Einlaß- und eine Auslaßöffnung auf, die in den Ausblasschacht ragen. Dadurch ist zum einen das Ausblasen der Kühlluft durch den Ausblasschacht nur wenig gestört und zum anderen eine optimale Kühlwirkung der Leuchte gewährleistet.The luminaire housing advantageously has an inlet opening and an outlet opening, that protrude into the exhaust duct. On the one hand, this means blowing out the cooling air only slightly disturbed by the discharge duct and on the other hand an optimal cooling effect the lamp guaranteed.

Gemäß einer bevorzugten Ausführungsform steht von dem Leuchtengehäuse ein erster Luftleitlappen im Bereich einer Einlaßöffnung des Leuchtengehäuses ab, der in den Ausblasschacht ragt und einen Teil der durch den Ausblasschacht geblasenen Kühlluft in das Leuchtengehäuse leitet. Insbesondere wenn im wesentlichen lediglich der erste Luftleitlappen in den Ausblasschacht ragt, ist das Ausblasen der Kühlluft aus dem Ausblasschacht kaum gestört und die Kühlwirkung für das Gargerät kaum beeinträchtigt. Andererseits ist es zur Kühlung der Leuchte völlig ausreichend, wenn lediglich der Luftleitlappen in den Ausblasschacht ragt. Der Luftleitlappen ist fertigungstechnisch einfach herstellbar und beeinträchtigt das Leuchtverhalten der Leuchte nur unwesentlich, auch wenn dadurch ein kleiner Flächenbereich des Leuchtenreflektors entfällt.According to a preferred embodiment, there is a first of the lamp housing Air flaps in the area of an inlet opening of the lamp housing, which in the outlet shaft protrudes and part of the cooling air blown through the exhaust duct into the Luminaire housing conducts. Especially when essentially only the first air guide flap protrudes into the outlet duct, is the blowing of the cooling air out of the outlet duct hardly disturbed and the cooling effect for the cooking appliance hardly impaired. On the other hand, it is entirely sufficient to cool the lamp if only the air flap is used protrudes into the outlet duct. The air guide flap is easy to manufacture in terms of production technology and only slightly affects the lighting behavior of the lamp, even if this eliminates a small area of the luminaire reflector.

Um das Kühlverhalten der Anordnung zu verbessern, steht im Bereich einer Auslaßöffnung des Leuchtengehäuses von diesem ein zweiter Luftleitlappen ab, der ebenfalls in den Ausblasschacht ragt. Dadurch ist auf einfache Weise sichergestellt, daß die durch die Einlaßöffnung des Leuchtengehäuses in dieses gedrückte Kühlluft nach der Kühlung der Leuchte aus dieser zurück in den Ausblasschacht gelangt. Dabei wird aufgrund des Luftleitlappens die durch den Ausblasschacht geführte Kühlluft kaum beeinträchtigt. Falls frontseitig der Ausblasschacht von einer Bedienperson gut eingesehen werden kann, kann das aus der Auslaßöffnung scheinende Licht störend sein. Um dies zu unterbinden, kann der Luftleitlappen beispielsweise strömungstechnisch hinter der Auslaßöffnung angeordnet sein oder als Labyrinth ausgebildet sein und den Lichtschein dadurch für die Bedienperson abdecken. Auch ist es denkbar, auf die Anordnung der Auslaßöffnung in diesem Bereich zu verzichten. Als strömungstechnisch und kühltechnisch besonders günstig sowie fertigungstechnisch einfach hat sich ergeben, daß die beiden Luftlappen in Ausblasrichtung zwischen der Einlaß- und der Auslaßöffnung etwa V-förmig hintereinander angeordnet sind.In order to improve the cooling behavior of the arrangement, there is an outlet opening of the lamp housing from this a second air flap, which is also in the outlet duct protrudes. This ensures in a simple manner that the through the inlet opening of the lamp housing into this compressed cooling air after cooling the luminaire gets back into the blow-out duct. It is due to the Air guide rag hardly affects the cooling air guided through the exhaust duct. If an operator can clearly see the blow-out duct on the front, the light shining from the outlet opening can be disturbing. To prevent this For example, the air flap can be arranged behind the outlet in terms of flow be or be formed as a labyrinth and thereby the light for the operator cover. It is also conceivable for the arrangement of the outlet opening in to forego this area. Particularly favorable in terms of flow technology and cooling technology as well as simple production technology has shown that the two lobes in Blow-out direction between the inlet and the outlet opening approximately V-shaped one behind the other are arranged.

Um eine gute Kühlung des Leuchtengehäuses ohne nachteilige Auswirkungen auf den Kühlluftstrom durch den Ausblaschacht zu erreichen, wird der Querschnitt einer Einlaßöffnung des Leuchtengehäuses größer gewählt als der einer entsprechenden Ausblasöffnung.To ensure good cooling of the luminaire housing without adversely affecting the To reach cooling air flow through the blow-out duct is the cross section of an inlet opening of the luminaire housing is chosen larger than that of a corresponding outlet opening.

Gemäß einer bevorzugten Ausführungsform ist zwischen dem Rand der Öffnung der Wand des Ausblasschachtes und dem am bzw. in der Öffnung gehalterten Leuchtengehäuse ein ausreichender Luftspalt zur Kühlung der Leuchte, beispielsweise durch die Kühlluft, vorgesehen. Die entlang der Wand des Ausblasschachtes strömende Kühlluft wird zum Teil durch den Luftspalt beispielsweise auf den Sockel der Lampe und die entsprechenden Anschlußleitungen zu deren zusätzlicher Kühlung gerichtet. Eine Kühlwirkung kann sich ebenfalls dadurch ergeben, daß warme Luft durch den Luftspalt in den Ausblasschacht steigt und abgeführt wird.According to a preferred embodiment, between the edge of the opening Wall of the outlet duct and the lamp housing held on or in the opening a sufficient air gap to cool the lamp, for example through the Cooling air, provided. The cooling air flowing along the wall of the exhaust duct is partly through the air gap, for example, on the base of the lamp and the corresponding Connection lines directed to their additional cooling. A cooling effect can also result from the fact that warm air through the air gap in the Discharge duct rises and is discharged.

Nachfolgend ist anhand schematischer Darstellungen ein Ausführungsbeispiel des erfindungsgemäßen Gargerätes und der Gargeräteleuchte beschrieben.Below is an embodiment of the invention based on schematic representations Cooking appliance and the cooking appliance light described.

Es zeigen:

Fig. 1
in einer Seitenansicht, teilweise in Schnittdarstellung, stark vereinfacht einen Backofen;
Fig. 2
in einer perspektivischen Darstellung, in vergrößertem Maßstab den Deckenbereich der Ofenmuffel des Backofens aus Fig. 1, und
Fig. 3
ausschnittsweise den Boden des Ausblasschachtes mit dem darin gehalterten Leuchtengehäuse in einer Draufsicht auf Fig. 2.
Show it:
Fig. 1
in a side view, partially in section, greatly simplified an oven;
Fig. 2
in a perspective view, on an enlarged scale, the ceiling area of the oven muffle of the oven from Fig. 1, and
Fig. 3
Detail of the bottom of the blow-out duct with the lamp housing held therein in a plan view of FIG. 2.

Ein Backofen 1 weist gemäß Fig. 1 ein Gehäuse 3 auf, in dem eine frontseitig offene Ofenmuffel 5 angeordnet ist. Der Ofenmuffel 5 sind an sich bekannte Heizelemente zum Garbetrieb zugeordnet (nicht gezeigt). Weiterhin verfügt der Backofen 1 über zum Pyrolysebetrieb erforderliche Mittel, insbesondere über eine geeignete Wärmeisolation (nicht gezeigt). Die Ofenmuffel 5 ist frontseitig durch eine angelenkte Ofentür 7 verschließbar. Durch mehrere Gehäuseöffnungen 9 saugt ein oberhalb der Ofenmuffel 5 angeordnetes Kühlluftgebläse 11 Kühlluft in den Backofen 1. Die Kühlluft wird vom Kühlluftgebläse 11 in einen frontseitig offenen Kühlluftschacht 13 gedrückt und tritt erwärmt frontseitig unterhalb einer Frontblende 15 des Backofens 1 und oberhalb der Ofentür 7 aus dem Gehäuse 3 aus. In einer im wesentlichen zentral angeordneten Öffnung einer Muffeldecke 17 der Ofenmuffel 5 ist eine Leuchte 18 zu deren Ausleuchtung gehaltert. Dazu ist die die Ofenmuffel 5 umgebende Wärmeisolation an dieser Stelle ausgespart (nicht gezeigt). Die Leuchte 18 weist ein schachtelförmiges metallisches Leuchtengehäuse 19 auf, das muffelseitig offen und deshalb durch eine an dem Gehäuse 19 gehalterte Glasplatte 21 verschlossen ist. In dem Leuchtengehäuse 19 ist eine an sich bekannte Glühlampe 23 angeordnet, die sich im wesentlichen parallel zur Muffeldecke 17 erstreckt (Fig. 1, Fig. 2).1 has a housing 3, in which an open at the front Furnace muffle 5 is arranged. The oven muffle 5 are known heating elements assigned to the cooking mode (not shown). Furthermore, the oven 1 has Pyrolysis operation necessary means, in particular through a suitable thermal insulation (Not shown). The furnace muffle 5 can be closed at the front by a hinged furnace door 7. One sucks above the furnace muffle 5 through several housing openings 9 arranged cooling air blower 11 cooling air in the oven 1. The cooling air is from Cooling air blower 11 is pressed into a cooling air shaft 13 open at the front and enters warms the front below a front panel 15 of the oven 1 and above Oven door 7 out of the housing 3. In a substantially central location Opening a muffle ceiling 17 of the furnace muffle 5 is a lamp 18 for illuminating it supported. For this purpose, the heat insulation surrounding the furnace muffle 5 is on it Spot left out (not shown). The lamp 18 has a box-shaped metallic Luminaire housing 19 on, the muffle side open and therefore by one the housing 19 held glass plate 21 is closed. In the lamp housing 19 is a known light bulb 23 is arranged, which is essentially extends parallel to the muffle cover 17 (Fig. 1, Fig. 2).

Mit Abstand zur Muffeldecke 17 verläuft oberhalb dieser parallel ein Schachtboden 25 des Kühlluftschachtes 13. Der Schachtboden 25 weist eine geeignete Bodenöffnung 27 auf (Fig. 3), deren freier Querschnitt etwa der Größe des Leuchtengehäuses 19 entspricht. Der als Reflektorboden dienende Boden des schachtelförmigen Leuchtengehäuses 19 liegt etwa in der Ebene des Schachtbodens 25 (Fig. 1, 2) und verschließt einen Großteil der Bodenöffnung 27. Aus dem Leuchtengehäuse 19 sind ein erster Luftleitlappen 29 und strömungstechnisch kurz dahinter ein kleinerer zweiter Luftleitlappen 31 gestochen. Dadurch sind zugleich eine Einlaßöffnung 33 und strömungstechnisch dahinter eine Auslaßöffnung 35 im Reflektorboden gebildet. Dabei ist der freie Querschnitt der Einlaßöffnung 33 größer als der der Auslaßöffnung 35 gewählt.At a distance from the muffle ceiling 17, a shaft floor 25 runs parallel above it of the cooling air shaft 13. The shaft floor 25 has a suitable floor opening 27 on (Fig. 3), the free cross section of about the size of the lamp housing 19th equivalent. The bottom of the box-shaped luminaire housing that serves as a reflector base 19 is approximately in the plane of the shaft floor 25 (Fig. 1, 2) and closes a large part of the bottom opening 27. A first is from the lamp housing 19 Air guide flap 29 and a smaller second air guide flap shortly behind 31 stung. As a result, there are at the same time an inlet opening 33 and flow technology behind it an outlet opening 35 is formed in the reflector base. Here is the free cross-section of the inlet opening 33 selected larger than that of the outlet opening 35.

Gemäß den Strömungspfeil in Fig. 1, 2 strömt durch das Kühlluftgebläse 11 in das Gehäuse 3 gesaugte Kühlluft in den Kühlluftschacht 13. Ein Teil der Kühlluft strömt dabei auch entlang dem Schachtboden 25. Der im Bodenbereich in den Kühlluftschacht 13 ragende erste Luftleitlappen 29 lenkt diesen Teilluftstrom unmittelbar in das Innere des Leuchtengehäuses 19. Dadurch werden die Leuchte 18 und insbesondere die Lampe 23 mit Kolben und Sockel 39 auch im Pyrolysebetrieb ausreichend gekühlt. Die Kühlluft strömt dann aus dem Leuchtengehäuse 19 durch die Auslaßöffnung 35 wieder zurück in den Kühlluftschacht 13. Dabei dient der zweite Luftleitlappen 31 insbesondere dazu, den eigentlichen Kühlluftstrom durch den Kühlluftschacht 13 möglichst wenig zu beeinträchtigen. Zur Verbesserung der Kühlwirkung ist zwischen dem Rand der Bodenöffnung 27 des Kühlluftschachtes 13 und dem Leuchtengehäuse 19 eine zusätzliche Kühlöffnung 37 gebildet. Unterhalb dieser ist gemäß Fig. 3 der Lampensockel 39 mit den entsprechenden Anschlußleitungen der Lampe vorgesehen. Dadurch ist erreicht, daß zusätzlich zu dem durch die Einlaßöffnung 33 und die Auslaßöffnung 35 des Leuchtengehäuses 19 geführten Nebenkühlluftstrom ein weiterer Zusatzkühlluftstrom auf den Lampensockel 39 gerichtet ist.According to the flow arrow in Fig. 1, 2 flows through the cooling air blower 11 into the housing 3 sucked cooling air into the cooling air shaft 13. Part of the cooling air flows in the process also along the shaft floor 25. The one in the floor area into the cooling air shaft 13 protruding first air guide flap 29 directs this partial air flow directly into the interior of the Luminaire housing 19. As a result, the lamp 18 and in particular the lamp 23 with piston and base 39 sufficiently cooled even in pyrolysis mode. The cooling air then flows back out of the lamp housing 19 through the outlet opening 35 into the cooling air shaft 13. The second air flap 31 is used in particular to minimize the actual cooling air flow through the cooling air shaft 13 affect. To improve the cooling effect is between the edge of the Bottom opening 27 of the cooling air shaft 13 and the lamp housing 19 an additional Cooling opening 37 formed. Below this is the lamp base 39 according to FIG. 3 provided with the corresponding connection lines of the lamp. This means that in addition to that through the inlet opening 33 and the outlet opening 35 of the luminaire housing 19 guided auxiliary cooling air flow, a further additional cooling air flow is directed to the lamp base 39.

Claims (9)

  1. Cooking appliance, particularly a pyrolytic cooking appliance, with a cooking chamber, which is lit by a light with a lamp arranged in a light housing, and with a cooling fan, which impels heated cooling air through an exhaust shaft out of the cooking appliance and cools the light by means of the cooling air, characterised in that the wall of the exhaust shaft (13) has an opening (27) through which the light housing (19) protrudes into the exhaust shaft (13).
  2. Cooking appliance according to claim 1, characterised in that the light housing (19) has an inlet opening (33) and an outlet opening (35), which protrude into the exhaust shaft (13), for the flow of cooling air through the light housing (19).
  3. Cooking appliance according to claim 1 or 2, characterised in that a first air guide tab (29) extends up from the light housing (19) in the region of an inlet opening (23) of the light housing (19), projects into the exhaust shaft (13) and conducts into the light housing (19) a part of the cooling air blown through the exhaust shaft (13).
  4. Cooking appliance according to claim 3, characterised in that substantially only the first air guide tab (29) protrudes into the exhaust shaft (13).
  5. Cooking appliance according to one of the preceding claims, characterised in that a second air guide tab (31) extends up from the light housing (19) in the region of an outlet opening (35) of the light housing (19), protrudes into the exhaust shaft (13) and conducts cooling air from the light housing (19) back into the exhaust shaft (13).
  6. Cooking appliance according to claim 3 in conjunction with claim 5, characterised in that the two air guide tabs (29, 31) are arranged approximately in V-shape one behind the other in exhaust direction between the inlet opening (33) and the outlet opening (35).
  7. Cooking appliance according to one of the preceding claims, characterised in that an inlet opening (33) of the light housing (19) has a greater cross-section for the cooling air than an exhaust opening (35) of the light housing.
  8. Cooking appliance according to one of the preceding claims, characterised in that an air gap (37) for additional cooling of the light (18) is provided between the edge of the opening (27) of the wall of the exhaust shaft (13) and the light housing (19) mounted in the opening, particularly in the region of connecting leads of the light.
  9. Cooking appliance light with a housing, in which a lamp is arranged, with an inlet opening for the feed of cooling air, characterised in that a first air guide tab (29) extends up from the light housing (19) in the region of the inlet opening (33) of the light housing (19).
EP99114517A 1998-07-27 1999-07-23 Cooking apparatus with a cooled lamp Expired - Lifetime EP0976986B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833774 1998-07-27
DE19833774A DE19833774A1 (en) 1998-07-27 1998-07-27 Cooking appliance with cooled light

Publications (3)

Publication Number Publication Date
EP0976986A2 EP0976986A2 (en) 2000-02-02
EP0976986A3 EP0976986A3 (en) 2001-01-10
EP0976986B1 true EP0976986B1 (en) 2003-05-28

Family

ID=7875467

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99114517A Expired - Lifetime EP0976986B1 (en) 1998-07-27 1999-07-23 Cooking apparatus with a cooled lamp

Country Status (4)

Country Link
EP (1) EP0976986B1 (en)
AT (1) ATE241782T1 (en)
DE (2) DE19833774A1 (en)
ES (1) ES2200443T3 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN109645841A (en) * 2017-10-11 2019-04-19 emz-汉拿两合有限公司 Pyrolysis baking box with lighting module

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Publication number Priority date Publication date Assignee Title
DE10318859A1 (en) * 2003-04-25 2004-11-11 BSH Bosch und Siemens Hausgeräte GmbH Cooking appliance
DE102005044691A1 (en) * 2005-09-19 2007-03-22 BSH Bosch und Siemens Hausgeräte GmbH High-mounting cooking appliance, has suction channel provided for fan arranged for vapors to reach suction channel from open vapor outlet
EP2119968B1 (en) 2008-05-17 2015-07-01 Electrolux Home Products Corporation N.V. A cooking oven with an illumination-equipment and an illumination-equipment for a cavity of a cooking oven
EP2233839B1 (en) * 2009-03-28 2019-06-12 Electrolux Home Products Corporation N.V. Oven with illumination
DE102009027912A1 (en) * 2009-07-22 2011-01-27 BSH Bosch und Siemens Hausgeräte GmbH Lighting device for the treatment room of a baking oven
ES2394429B1 (en) 2009-12-09 2013-12-05 BSH Electrodomésticos España S.A. HOUSEHOLD APPLIANCE TO PREPARE FOOD, WITH A FAN AND A LAMP TO LIGHT THE COOKING SPACE.
DE102009055073A1 (en) * 2009-12-21 2011-06-22 BSH Bosch und Siemens Hausgeräte GmbH, 81739 Household appliance i.e. baking-oven, has light source directly or indirectly and thermally coupled to flow area of channel that is passed outside processing chamber, where heated air flow is partially guided to processing chamber
DE102010062949A1 (en) * 2010-12-13 2012-06-14 BSH Bosch und Siemens Hausgeräte GmbH Oven with a duct
DE102014203531A1 (en) * 2014-02-27 2015-08-27 BSH Hausgeräte GmbH Cooking appliance with a specific cooling of a lighting device
DE102021201764A1 (en) * 2020-02-25 2021-08-26 Wilhelm Bruckbauer Device for heating food to be cooked

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DE1979274U (en) * 1967-07-06 1968-02-22 Siemens Elektrogeraete Gmbh BAKING AND BAKING PIPE.
DE8609316U1 (en) * 1986-04-07 1986-06-12 Bosch-Siemens Hausgeräte GmbH, 8000 München oven
CH678913A5 (en) * 1989-05-31 1991-11-29 Electrolux Ag Oven for forced cooling - with heat transferred to air which flows along channels in oven walls and door
DE4014360A1 (en) * 1990-05-04 1991-11-07 Bosch Siemens Hausgeraete LIGHTING DEVICE FOR A STOVE
DE29519499U1 (en) * 1995-12-08 1996-02-22 Winkler Gmbh & Co Kg Baeckerei Heat-resistant lamp
DE29718343U1 (en) * 1997-10-20 1998-01-15 Broekelmann Jaeger & Busse Lighting device for a stove

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109645841A (en) * 2017-10-11 2019-04-19 emz-汉拿两合有限公司 Pyrolysis baking box with lighting module

Also Published As

Publication number Publication date
EP0976986A2 (en) 2000-02-02
DE59905717D1 (en) 2003-07-03
ATE241782T1 (en) 2003-06-15
DE19833774A1 (en) 2000-02-03
EP0976986A3 (en) 2001-01-10
ES2200443T3 (en) 2004-03-01

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