EP1464898A1 - Cooking device - Google Patents

Cooking device Download PDF

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Publication number
EP1464898A1
EP1464898A1 EP04005707A EP04005707A EP1464898A1 EP 1464898 A1 EP1464898 A1 EP 1464898A1 EP 04005707 A EP04005707 A EP 04005707A EP 04005707 A EP04005707 A EP 04005707A EP 1464898 A1 EP1464898 A1 EP 1464898A1
Authority
EP
European Patent Office
Prior art keywords
muffle
guide plate
cooking appliance
appliance according
air guide
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.)
Granted
Application number
EP04005707A
Other languages
German (de)
French (fr)
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EP1464898B1 (en
Inventor
Werner Fleischhauer
Nikolaus Haberstetter
Peter Mallinger
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1464898A1 publication Critical patent/EP1464898A1/en
Application granted granted Critical
Publication of EP1464898B1 publication Critical patent/EP1464898B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
    • F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation

Definitions

  • the invention relates to a cooking device with a cooking chamber delimiting Cooking appliance muffle, a fan with a fan, and an air baffle forms a blower chamber between itself and a muffle wall in the fan wheel is arranged, and the fastening flange surrounding the blower chamber has, which is in contact with the muffle wall.
  • Another oven with an oven muffle is known from DE 196 40 237, in which an air baffle is arranged.
  • the air baffle has a mounting flange, the circumference is on the back wall of the oven muffle.
  • the object of the invention is a cooking appliance with a muffle To provide, in which an air baffle in a sufficiently airtight system with a Muffle wall is.
  • the object is achieved by a cooking appliance with the features of patent claim 1.
  • the characterizing part of claim 1 is in the muffle wall Embossing formed, which is provided in the region of the blower chamber.
  • the Embossing according to the invention leads to stiffening of the muffle wall. This is a Warping of the muffle wall during thermal stress on the cooking device muffle, such as it occurs in particular in the case of muffle with a small sheet thickness.
  • a flat contact surface becomes in the muffle wall maintained that is sufficiently airtight in contact with the air baffle.
  • the embossing at least partially moves the blower chamber.
  • the embossing or Ring embossing itself is in contact with the mounting flange.
  • the Ring embossing not only to stiffen the muffle wall, but also as one on the Muffle wall formed sealing element.
  • those who Blower chamber moving contact surfaces of the embossing and Mounting flange of the air baffle is particularly narrow.
  • A is preferred Line contact between the embossing and the mounting flange. So that Adhesion of the enamel layer on the embossing of the muffle wall and on the Air baffle is not affected by small radii, is a width of Contact area of 1 to 2 mm is particularly preferred.
  • the muffle wall embossing with reference is arranged offset inwards on a peripheral edge of the air baffle. In this case, the embossing is hidden behind the air baffle.
  • the Air baffle on the muffle wall is damaged on the inside of the muffle Avoid enamel layer in any case. It is therefore particularly advantageous if the Circumferential edge of the air baffle spaced through a space and therefore is contact-free from the muffle wall.
  • the space between the air baffle and the muffle wall makes it possible addition, that the peripheral edge of the air baffle towards the muffle wall is bent. This makes the transition easy to clean and visually smooth reached between the muffle wall and the air baffle.
  • FIG. 1 shows a cooking device with a cooking space 1 which is cuboid Cooking appliance muffle 3 is limited, which is coated on the inside with an enamel layer 4.
  • the cooking device muffle 3 comprises a vertically extending rear wall 5, two vertically and perpendicularly extending side walls 7, one horizontally extending top wall 9 and a horizontally extending bottom wall 11.
  • the cooking space 1 can be closed in a manner known per se through the oven door 13.
  • a top heat radiator not shown arranged.
  • Immediately below the bottom wall 11 is outside of the cooking space Lower heat radiator, not shown, arranged.
  • On the two side walls 7 are in different heights corresponding guide ribs 17 formed on the in different heights of food carriers can be held.
  • the air guide plate 21 On the rear wall 5 of the cooking device muffle 3 is a trough-shaped enamelled Air guide plate 21 attached.
  • the air guide plate 21 has a substantially flat square tub floor 22, from which angled on the circumferential side Tub edge 23 extends.
  • On an upper peripheral edge of the side tub rim 23 closes a circumferential one running approximately parallel to the tub floor 22 Mounting flange 25 on.
  • the air baffle limits the cooking space 1 and on the other hand forms a blower chamber 27 together with the rear wall 5 the mounting flange 25 of the air guide plate 21 on the circumference essentially airtight the rear wall 5 of the cooking device muffle 3.
  • an impeller 29 of a radial fan arranged in a manner known per se from an outside the oven muffle 3 arranged drive unit, not shown, is driven.
  • the Blower wheel 29 is surrounded by a ring heating element 30, as shown in FIG. 2 is indicated.
  • the ring heater 30 is together with the impeller 29 in a recessed wall region 31 of the rear wall 5.
  • the fan wheel 29 is located immediately behind suction openings 32, which are in a circular Area in the tub floor 22 are arranged. Over essentially the whole The height of the lateral vertical tub edges 23 are numerous individual rectangular ones Blow-out openings 33 arranged one above the other and by narrow webs from each other separated, as indicated in Figure 1.
  • the recessed wall area 31 has a side surface parallel to the rear wall 5 and an angled transition surface between the parallel side surface and the Rear wall 5 on.
  • the wall area 31 is formed by one in the rear wall 5 Embossed ring 35 moved.
  • the mounting flange 25 is in an airtight system the ring embossing 35.
  • the contact surfaces of the ring embossing 35 with the Mounting flange 25 has a width of about 1 to 2 mm here.
  • the ring embossing 35 causes on the one hand that the rear wall 5 made of a thin sheet material also warps only slightly under thermal stress.
  • the contact area of the Ring embossing 35 thus remains in close contact with the even under thermal stress Contact surface of the air guide plate 21.
  • the ring embossing 35 almost a line contact between the air guide plate 21 and the rear wall 5 is created, whereby the airtight system in between has been further improved.
  • a peripheral edge 37 of the air guide plate 21 is from the Muffle rear wall 5 spaced through a space z. This ensures that the mostly sharp-edged peripheral edge 37 of the air guide plate 21 in any case mounted without contact to the muffle back wall.
  • the peripheral edge 37 of the air baffle 21 is still set back or bent back towards the muffle rear wall 5, whereby a cleaning-friendly transition between the rear wall 5 and the Air baffle is reached.
  • the ring embossment 35 extends like a peripheral edge of the air guide plate 21 at right angles around the blower chamber 27. At its corner regions 39, the narrow contact surface of the ring embossment is widened from the width b 1 to a width b 2 in order to provide a flat mounting surface for a screw connection 43 between the air guide plate 21 and to provide the rear wall 5.
  • FIGS. 3a to 3c Variants of the screw connection 43 are shown in FIGS. 3a to 3c.
  • the figures are the enamel layers of the air guide plate 21 and the muffle rear wall 5 not shown.
  • Figure 3a is a Fastening opening 45 in the ring embossing 35 with a corresponding one Fastening opening 47 aligned in the mounting flange 25 of the air guide plate 21.
  • Hollow-cylindrical projections are deep-drawn at both fastening openings 45, 47, that protrude in opposite directions.
  • the hollow cylindrical approach of Ring embossing 35 has an internal thread into which a screw 49 is screwed is. The screw 49 protrudes through the hollow cylindrical extension of the Air guide plate 21.
  • a screw head 51 of the screw 49 presses against the edge of the hollow cylindrical extension of the air baffle plate 21.
  • the collar-shaped hollow cylindrical approach to the mounting opening 45 of the mounting flange a contact surface for the screw head spaced from the manufacturing flange provided. As a result, there is no flat pressure contact between one end face of the screw head 51 and the enamel layer on the air guide plate 21.
  • a screw head 51 is on Additional ring shoulder 53 formed, the contact-free through the mounting opening 47 of the air baffle plate 21 protrudes and at the end in contact with the ring embossing 35 Back wall 5 is.
  • the screw depth of the screw 49 limited. Consequently, that of the fastening flange 25 is also by means of the screw 49 the air guide plate 21 limited pressure exerted on the rear wall.
  • a plate-like spring element 55 is additionally provided, which on the Ring approach 53 is inserted.
  • the spring element 55 presses against one with a spring end Face of the screw head 51 and with another spring end against the hollow cylindrical approach of the mounting opening 45 of the air guide plate 21. Das Spring element 55 can withstand high thermal or mechanical loads between the Take up the air baffle 21 and the muffle rear wall 5.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Baking, Grill, Roasting (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Cookers (AREA)

Abstract

The device has a muffle, a circulation fan with a fan wheel (29) and an air guide plate (21) forming a fan chamber (27) with a muffle wall (5) in which the fan wheel is arranged. The plate has an attachment flange (25) enclosing the fan chamber in contact with the muffle wall. An impression (35) is formed in the muffle wall in the fan chamber region.

Description

Die Erfindung betrifft ein Gargerät mit einer einen Garraum eingrenzenden Gargerätemuffel, einem Umluftgebläse mit einem Lüfterrad, und einer Luftleitplatte, die zwischen sich und einer Muffelwand eine Gebläsekammer bildet, in der Lüfterrad angeordnet ist, und die einen die Gebläsekammer umziehenden Befestigungsflansch aufweist, der in Anlage mit der Muffelwand ist.The invention relates to a cooking device with a cooking chamber delimiting Cooking appliance muffle, a fan with a fan, and an air baffle forms a blower chamber between itself and a muffle wall in the fan wheel is arranged, and the fastening flange surrounding the blower chamber has, which is in contact with the muffle wall.

Aus DE 198 31 087 A1 ist ein gattungsgemäßer Backofen mit einer Backofenmuffel bekannt. In der Backofenmuffel ist parallel zu einer Rückwand ein Luftleitblech gehaltert. Dieses unterteilt die Backofenmuffel in einen vor dem Luftleitblech liegenden Garraum und einen zwischen der Rückwand und dem Luftleitblech vorgesehenen Aufnahmeraum für ein Gebläserad. Das Luftleitblech weist Ansaugöffnungen und Ausblasöffnungen auf. Das Luftleitblech besitzt in seinem oberen und unteren Endabschnitt einen sich über dessen gesamte Breite erstreckenden Befestigungsflansch. In diesem sind insgesamt vier Befestigungsöffnungen zum Befestigen des Luftleitbleches an der Rückwand der Backofenmuffel vorgesehen.DE 198 31 087 A1 describes a generic oven with an oven muffle known. An air baffle is held in the oven muffle parallel to a rear wall. This divides the oven muffle into a cooking space in front of the air baffle and a receiving space provided between the rear wall and the air baffle for an impeller. The air baffle has suction openings and outlet openings. The air baffle has an over in its upper and lower end portion the entire width of the mounting flange. There are four in total Fastening openings for fastening the air baffle to the rear wall of the Oven muffle provided.

Aus DE 196 40 237 ist ein weiterer Backofen mit einer Backofenmuffel bekannt, in der eine Luftleitplatte angeordnet ist. Die Luftleitplatte weist einen Befestigungsflansch auf, der umfangsseitig an der Rückwand der Backofenmuffel liegt.Another oven with an oven muffle is known from DE 196 40 237, in which an air baffle is arranged. The air baffle has a mounting flange, the circumference is on the back wall of the oven muffle.

Die Aufgabe der Erfindung besteht darin, ein Gargerät mit einer Gargerätemuffel bereitzustellen, bei der eine Luftleitplatte in ausreichend luftdichter Anlage mit einer Muffelwand ist.The object of the invention is a cooking appliance with a muffle To provide, in which an air baffle in a sufficiently airtight system with a Muffle wall is.

Die Aufgabe ist durch ein Gargerät mit den Merkmalen des Patentanspruches 1 gelöst. Gemäß dem kennzeichnenden Teil des Patentanspruches 1 ist in der Muffelwand eine Prägung ausgebildet, die im Bereich der Gebläsekammer vorgesehen ist. Die erfindungsgemäße Prägung führt zu einer Versteifung der Muffelwand. Dadurch ist ein Verziehen der Muffelwand während einer Wärmebeanspruchung der Gargerätemuffel, wie es insbesondere bei Gargerätemuffeln mit einer geringen Blechdicke auftritt, reduziert. rotz hoher Wärmebelastung wird in der Muffelwand eine plane Kontaktfläche aufrechterhalten, die ausreichend luftdicht in Anlage mit der Luftleitplatte ist. Besonders bevorzugt ist es, wenn die Prägung die Gebläsekammer zumindest teilweise umzieht.The object is achieved by a cooking appliance with the features of patent claim 1. According to the characterizing part of claim 1 is in the muffle wall Embossing formed, which is provided in the region of the blower chamber. The Embossing according to the invention leads to stiffening of the muffle wall. This is a Warping of the muffle wall during thermal stress on the cooking device muffle, such as it occurs in particular in the case of muffle with a small sheet thickness. Despite the high heat load, a flat contact surface becomes in the muffle wall maintained that is sufficiently airtight in contact with the air baffle. Especially it is preferred if the embossing at least partially moves the blower chamber.

Besonders bevorzugt ist es, wenn die in der Muffelwand ausgebildete Prägung bzw. Ringprägung selbst in Anlage mit dem Befestigungsflansch ist. In diesem Fall dient die Ringprägung nicht nur der Versteifung der Muffelwand, sondern auch als ein an der Muffelwand ausgebildetes Dichtelement. Hier ist es besonders bevorzugt, wenn die, die Gebläsekammer umziehenden Kontaktflächen der Prägung und des Befestigungsflansches der Luftleitplatte besonders schmal ist. Bevorzugt ist ein Linienkontakt zwischen der Prägung und dem Befestigungsflansch. Damit das Haftvermögen der Emailschicht auf der Prägung der Muffelwand sowie auf der Luftleitplatte nicht durch kleine Radien beeinträchtigt wird, ist eine Breite der Kontaktfläche von 1 bis 2 mm besonders bevorzugt.It is particularly preferred if the embossing or Ring embossing itself is in contact with the mounting flange. In this case, the Ring embossing not only to stiffen the muffle wall, but also as one on the Muffle wall formed sealing element. Here it is particularly preferred if those who Blower chamber moving contact surfaces of the embossing and Mounting flange of the air baffle is particularly narrow. A is preferred Line contact between the embossing and the mounting flange. So that Adhesion of the enamel layer on the embossing of the muffle wall and on the Air baffle is not affected by small radii, is a width of Contact area of 1 to 2 mm is particularly preferred.

Aus optischen Gründen ist es von Vorteil, wenn die muffelwandseitige Prägung mit Bezug auf eine Umfangskante der Luftleitplatte nach innen versetzt angeordnet ist. In diesem Fall befindet sich die Prägung sichtgeschützt hinter der Luftleitplatte. Bei der Montage der Luftleitplatte an der Muffelwand ist eine Beschädigung der muffelinnenseitigen Emailschicht in jedem Falle zu vermeiden. Es ist daher besonders vorteilhaft, wenn die Umfangskante der Luftleitplatte über einen Zwischenraum beabstandet und daher berührungsfrei von der Muffelwand ist.For visual reasons, it is advantageous if the muffle wall embossing with reference is arranged offset inwards on a peripheral edge of the air baffle. In this In this case, the embossing is hidden behind the air baffle. When assembling the Air baffle on the muffle wall is damaged on the inside of the muffle Avoid enamel layer in any case. It is therefore particularly advantageous if the Circumferential edge of the air baffle spaced through a space and therefore is contact-free from the muffle wall.

Der Zwischenraum zwischen der Luftleitplatte und der Muffelwand ermöglicht es darüber hinaus, dass die Umfangskante der Luftleitplatte in Richtung auf die Muffelwand umgebogen ist. Dadurch ist ein reinigungsfreundlicher und optisch glatter Übergang zwischen der Muffelwand und der Luftleitplatte erreicht.The space between the air baffle and the muffle wall makes it possible addition, that the peripheral edge of the air baffle towards the muffle wall is bent. This makes the transition easy to clean and visually smooth reached between the muffle wall and the air baffle.

Besonders bevorzugt ist es, wenn zwischen der in der Muffelrückwand ausgebildeten Prägung und dem Befestigungsflansch der Luftleitplatte eine feste Verbindung ausgebildet ist, wodurch ein besonders dichter Kontakt zwischen der Prägung und der Luftleitplatte herstellbar ist.It is particularly preferred if between that formed in the muffle rear wall Embossing and the mounting flange of the air baffle plate a firm connection is formed, whereby a particularly close contact between the embossing and the Air baffle can be produced.

Ein Ausführungsbeispiel der Erfindung ist nachfolgend anhand der beigefügten Figuren beschrieben. Es zeigen:

Figur 1
in einer perspektivischen Ansicht ein Gargerät mit geöffneter Gargerätetür;
Figur 2
eine Schnittansicht in Pfeilrichtung von einer Schnittebene A aus der Figur 1;
Figuren 3a bis 3c
Varianten einer Schraubverbindung zwischen der Luftleitplatte und der Muffelwand.
An embodiment of the invention is described below with reference to the accompanying figures. Show it:
Figure 1
in a perspective view of a cooking appliance with the cooking appliance door open;
Figure 2
a sectional view in the direction of arrow from a sectional plane A of Figure 1;
Figures 3a to 3c
Variants of a screw connection between the air guide plate and the muffle wall.

In der Figur 1 ist ein Gargerät mit einem Garraum 1 gezeigt, der durch eine quaderförmige Gargerätemuffel 3 begrenzt ist, die innenseitig mit einer Emailleschicht 4 überzogen ist. Die Gargerätemuffel 3 umfasst eine sich vertikal erstreckende Rückwand 5, zwei sich vertikal und senkrecht dazu erstreckende Seitenwände 7, eine sich horizontal erstreckende Deckwand 9 sowie eine sich ebenso horizontal erstreckende Bodenwand 11. Der Garraum 1 ist in an sich bekannter Weise durch die Ofentür 13 verschließbar. Unmittelbar unterhalb der Deckenwand 9 ist ein nicht dargestellter Oberhitze-Heizkörper angeordnet. Unmittelbar unterhalb der Bodenwand 11 ist außerhalb des Garraums ein nicht gezeigter Unterhitze-Heizkörper angeordnet. An den beiden Seitenwänden 7 sind in unterschiedlichen Höhen entsprechende Führungsrippen 17 ausgebildet, auf die in unterschiedlichen Höhen Gargutträger gehaltert werden können.FIG. 1 shows a cooking device with a cooking space 1 which is cuboid Cooking appliance muffle 3 is limited, which is coated on the inside with an enamel layer 4. The cooking device muffle 3 comprises a vertically extending rear wall 5, two vertically and perpendicularly extending side walls 7, one horizontally extending top wall 9 and a horizontally extending bottom wall 11. The cooking space 1 can be closed in a manner known per se through the oven door 13. Immediately below the ceiling wall 9 is a top heat radiator, not shown arranged. Immediately below the bottom wall 11 is outside of the cooking space Lower heat radiator, not shown, arranged. On the two side walls 7 are in different heights corresponding guide ribs 17 formed on the in different heights of food carriers can be held.

An der Rückwand 5 der Gargerätemuffel 3 ist eine wannenförmig ausgebildete emaillierte Luftleitplatte 21 befestigt. Die Luftleitplatte 21 weist einen im wesentlichen flachen viereckigen Wannenboden 22 auf, von dem sich umfangsseitig abgewinkelt ein seitlicher Wannenrand 23 erstreckt. An einem oberen Umfangsrand des seitlichen Wannenrandes 23 schließt sich ein etwa parallel zum Wannenboden 22 verlaufender umfangsseitiger Befestigungsflansch 25 an. Die Luftleitplatte begrenzt zum einen den Garraum 1 und bildet zum anderen zusammen mit der Rückwand 5 eine Gebläsekammer 27. Dabei liegt der Befestigungsflansch 25 der Luftleitplatte 21 umfangsseitig im wesentlichen luftdicht an der Rückwand 5 der Gargerätemuffel 3 an. In der Gebläsekammer 27 ist ein Gebläserad 29 eines Radialgebläses angeordnet, das in an sich bekannter Weise von einer außerhalb der Backofenmuffel 3 angeordneten nicht gezeigten Antriebseinheit angetrieben wird. Das Gebläserad 29 ist von einem Ringheizkörper 30 umgeben, wie es in der Figur 2 angedeutet ist. Dabei ist der Ringheizkörper 30 zusammen mit dem Gebläserad 29 in einem rückspringenden Wandbereich 31 der Rückwand 5 angeordnet. Das Gebläserad 29 befindet sich unmittelbar hinter Ansaugöffnungen 32, die in einem kreisförmigen Bereich in dem Wannenboden 22 angeordnet sind. Über im wesentlichen die gesamte Höhe der seitlichen vertikalen Wannenränder 23 sind zahlreiche einzelne rechteckige Ausblasöffnungen 33 übereinander angeordnet und durch schmale Stege voneinander getrennt, wie es in der Figur 1 angedeutet ist.On the rear wall 5 of the cooking device muffle 3 is a trough-shaped enamelled Air guide plate 21 attached. The air guide plate 21 has a substantially flat square tub floor 22, from which angled on the circumferential side Tub edge 23 extends. On an upper peripheral edge of the side tub rim 23 closes a circumferential one running approximately parallel to the tub floor 22 Mounting flange 25 on. The air baffle limits the cooking space 1 and on the other hand forms a blower chamber 27 together with the rear wall 5 the mounting flange 25 of the air guide plate 21 on the circumference essentially airtight the rear wall 5 of the cooking device muffle 3. In the blower chamber 27 is an impeller 29 of a radial fan arranged in a manner known per se from an outside the oven muffle 3 arranged drive unit, not shown, is driven. The Blower wheel 29 is surrounded by a ring heating element 30, as shown in FIG. 2 is indicated. The ring heater 30 is together with the impeller 29 in a recessed wall region 31 of the rear wall 5. The fan wheel 29 is located immediately behind suction openings 32, which are in a circular Area in the tub floor 22 are arranged. Over essentially the whole The height of the lateral vertical tub edges 23 are numerous individual rectangular ones Blow-out openings 33 arranged one above the other and by narrow webs from each other separated, as indicated in Figure 1.

Der rückspringende Wandbereich 31 weist eine zur Rückwand 5 parallele Seitenfläche sowie eine abgewinkelte Übergangsfläche zwischen der parallelen Seitenfläche und der Rückwand 5 auf. Der Wandbereich 31 ist von einer in der Rückwand 5 ausgebildeten Ringprägung 35 umzogen. Der Befestigungsflansch 25 ist dabei in luftdichter Anlage mit der Ringprägung 35. Die Kontaktflächen der Ringprägung 35 mit dem Befestigungsflansch 25 weist hier eine Breite von etwa 1 bis 2 mm auf. Die Ringprägung 35 bewirkt zum einen, dass die aus einem Dünnblechmaterial gefertigte Rückwand 5 auch bei thermischer Beanspruchung sich nur geringfügig verzieht. Die Kontaktfläche der Ringprägung 35 bleibt somit auch bei thermischer Beanspruchung in enger Anlage mit der Kontaktfläche der Luftleitplatte 21. Zum anderen wird durch die Ringprägung 35 nahezu ein Linienkontakt zwischen der Luftleitplatte 21 und der Rückwand 5 geschaffen, wodurch die luftdichte Anlage dazwischen weiter verbessert ist.The recessed wall area 31 has a side surface parallel to the rear wall 5 and an angled transition surface between the parallel side surface and the Rear wall 5 on. The wall area 31 is formed by one in the rear wall 5 Embossed ring 35 moved. The mounting flange 25 is in an airtight system the ring embossing 35. The contact surfaces of the ring embossing 35 with the Mounting flange 25 has a width of about 1 to 2 mm here. The ring embossing 35 causes on the one hand that the rear wall 5 made of a thin sheet material also warps only slightly under thermal stress. The contact area of the Ring embossing 35 thus remains in close contact with the even under thermal stress Contact surface of the air guide plate 21. On the other hand, the ring embossing 35 almost a line contact between the air guide plate 21 and the rear wall 5 is created, whereby the airtight system in between has been further improved.

Wie aus der Figur 2 hervorgeht, ist eine Umfangskante 37 der Luftleitplatte 21 von der Muffelrückwand 5 über einen Zwischenraum z beabstandet. Dadurch ist gewährleistet, dass die meist scharfkantige Umfangskante 37 der Luftleitplatte 21 in jedem Falle berührungsfrei zur Muffelrückwand montiert wird. Die Umfangskante 37 der Luftleitplatte 21 ist weiterhin in Richtung auf die Muffelrückwand 5 zurückgesetzt oder zurückgebogen, wodurch ein reinigungsfreundlicher Übergang zwischen der Rückwand 5 und der Luftleitplatte erreicht ist.As can be seen from FIG. 2, a peripheral edge 37 of the air guide plate 21 is from the Muffle rear wall 5 spaced through a space z. This ensures that the mostly sharp-edged peripheral edge 37 of the air guide plate 21 in any case mounted without contact to the muffle back wall. The peripheral edge 37 of the air baffle 21 is still set back or bent back towards the muffle rear wall 5, whereby a cleaning-friendly transition between the rear wall 5 and the Air baffle is reached.

Die Ringprägung 35 verläuft wie ein Umfangsrand der Luftleitplatte 21 rechtwinklig um die Gebläsekammer 27. An ihren Eckbereichen 39 ist die schmale Kontaktfläche der Ringprägung von der Breite b1 auf eine Breite b2 ausgeweitet, um eine plane Montagefläche für eine Schraubverbindung 43 zwischen der Luftleitplatte 21 und der Rückwand 5 bereitzustellen. The ring embossment 35 extends like a peripheral edge of the air guide plate 21 at right angles around the blower chamber 27. At its corner regions 39, the narrow contact surface of the ring embossment is widened from the width b 1 to a width b 2 in order to provide a flat mounting surface for a screw connection 43 between the air guide plate 21 and to provide the rear wall 5.

Varianten der Schraubverbindung 43 sind in den Figuren 3a bis 3c dargestellt. In diesen Figuren sind aus Gründen der Übersichtlichkeit die Emailschichten der Luftleitplatte 21 und der Muffelrückwand 5 nicht dargestellt. Gemäß der Figur 3a ist eine Befestigungsöffnung 45 in der Ringprägung 35 mit einer entsprechenden Befestigungsöffnung 47 in dem Befestigungsflansch 25 der Luftleitplatte 21 ausgerichtet. An beiden Befestigungsöffnungen 45, 47 sind hohlzylinderförmige Ansätze tiefgezogen, die in entgegengesetzte Richtungen ragen. In dem hohlzylinderförmigen Ansatz der Ringprägung 35 ist ein Innengewinde ausgebildet, in das eine Schraube 49 geschraubt ist. Die Schraube 49 ragt berührungsfrei durch den hohlzylinderförmigen Ansatz der Luftleitplatte 21. Ein Schraubenkopf 51 der Schraube 49 drückt gegen den Rand des hohlzylinderförmigen Ansatz der Luftleitplatte 21. Durch den kragenförmigen hohlzylinderförmigen Ansatz der Befestigungsöffnung 45 des Befestigungsflansches wird eine vom Befertigungsflansch beabstandete Berührungsfläche für den Schraubenkopf bereitgestellt. Dadurch entsteht keinerlei flächiger Druckkontakt zwischen einer Stirnseite des Schraubenkopfes 51 und der Emailschicht auf der Luftleitplatte 21.Variants of the screw connection 43 are shown in FIGS. 3a to 3c. In these For reasons of clarity, the figures are the enamel layers of the air guide plate 21 and the muffle rear wall 5 not shown. According to Figure 3a is a Fastening opening 45 in the ring embossing 35 with a corresponding one Fastening opening 47 aligned in the mounting flange 25 of the air guide plate 21. Hollow-cylindrical projections are deep-drawn at both fastening openings 45, 47, that protrude in opposite directions. In the hollow cylindrical approach of Ring embossing 35 has an internal thread into which a screw 49 is screwed is. The screw 49 protrudes through the hollow cylindrical extension of the Air guide plate 21. A screw head 51 of the screw 49 presses against the edge of the hollow cylindrical extension of the air baffle plate 21. By the collar-shaped hollow cylindrical approach to the mounting opening 45 of the mounting flange a contact surface for the screw head spaced from the manufacturing flange provided. As a result, there is no flat pressure contact between one end face of the screw head 51 and the enamel layer on the air guide plate 21.

Gemäß der Befestigungsvariante aus der Figur 3b ist am Schraubenkopf 51 ein zusätzlicher Ringansatz 53 ausgebildet, der berührungsfrei durch die Befestigungsöffnung 47 der Luftleitplatte 21 ragt und stirnseitig in Anlage mit der Ringprägung 35 der Rückwand 5 ist. Durch den Ringansatz 53 ist eine Einschraubtiefe der Schraube 49 begrenzt. Folglich ist auch der mittels der Schraube 49 von dem Befestigungsflansch 25 der Luftleitplatte 21 auf die Rückwand ausgeübte Druck begrenzt. Eine übermäßige Druckbelastung zwischen dem Befestigungsflansch 25 der Luftleitplatte und der Ringprägung 35 der Rückwand 5 ist dadurch verhindert. Gemäß der Befestigungsvariante aus der Figur 3c ist zusätzlich ein tellerartiges Federelement 55 vorgesehen, das auf den Ringansatz 53 gesteckt ist. Das Federelement 55 drückt mit einem Federende gegen eine Stirnseite des Schraubenkopfes 51 und mit einem weiteren Federende gegen den hohlzylinderförmigen Ansatz der Befestigungsöffnung 45 der Luftleitplatte 21. Das Federelement 55 kann hohe thermische oder mechanische Belastungen zwischen der Luftleitplatte 21 und der Muffelrückwand 5 aufnehmen.According to the fastening variant from FIG. 3b, a screw head 51 is on Additional ring shoulder 53 formed, the contact-free through the mounting opening 47 of the air baffle plate 21 protrudes and at the end in contact with the ring embossing 35 Back wall 5 is. Through the ring shoulder 53, the screw depth of the screw 49 limited. Consequently, that of the fastening flange 25 is also by means of the screw 49 the air guide plate 21 limited pressure exerted on the rear wall. An excessive one Pressure load between the mounting flange 25 of the air baffle and the This prevents ring embossing 35 of the rear wall 5. According to the mounting variant from the figure 3c, a plate-like spring element 55 is additionally provided, which on the Ring approach 53 is inserted. The spring element 55 presses against one with a spring end Face of the screw head 51 and with another spring end against the hollow cylindrical approach of the mounting opening 45 of the air guide plate 21. Das Spring element 55 can withstand high thermal or mechanical loads between the Take up the air baffle 21 and the muffle rear wall 5.

Claims (11)

Gargerät mit einer Gargerätemuffel (3), einem Umluftgebläse mit einem Lüfterrad (29) und einer Luftleitplatte (21), die zwischen sich und einer Muffelwand (5) eine Gebläsekammer (27) bildet, in der das Lüfterrad (29) angeordnet ist, welche Luftleitplatte (21) einen die Gebläsekammer (27) umziehenden Befestigungsflansch (25) aufweist, der in Anlage mit der Muffelwand (5) ist, dadurch gekennzeichnet, dass in der Muffelwand (5) eine Prägung (35) ausgebildet ist, die im Bereich der Gebläsekammer (27) vorgesehen ist.Cooking device with a cooking device muffle (3), a circulating air blower with a fan wheel (29) and an air guide plate (21) which forms a blower chamber (27) between itself and a muffle wall (5) in which the fan wheel (29) is arranged, which Air baffle plate (21) has a fastening flange (25) which surrounds the blower chamber (27) and is in contact with the muffle wall (5), characterized in that an embossment (35) is formed in the muffle wall (5), which is in the area of the Blower chamber (27) is provided. Gargerät nach Anspruch 1, dadurch gekennzeichnet, dass die Prägung (35) die Gebläsekammer (27) zumindest teilweise umzieht.Cooking appliance according to claim 1, characterized in that the embossing (35) at least partially moves the blower chamber (27). Gargerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Befestigungsflansch (25) in Anlage mit der Prägung (35) ist.Cooking appliance according to claim 1 or 2, characterized in that the fastening flange (25) is in contact with the embossing (35). Gargerät nach Anspruch 3, dadurch gekennzeichnet, dass die in der Muffelwand (5) ausgebildete Prägung (35) mit einer schmalen Kontaktfläche in Anlage mit dem Befestigungsflansch (25) der Luftleitplatte ist, die insbesondere etwa 1 bis 2 mm breit ist.Cooking appliance according to claim 3, characterized in that the embossment (35) formed in the muffle wall (5) with a narrow contact surface is in contact with the fastening flange (25) of the air guide plate, which is in particular approximately 1 to 2 mm wide. Gargerät nach einem der vorhergehenden Ansprüche 3 oder 4, dadurch gekennzeichnet, dass die Prägung (35) in einem Linienkontakt mit dem Befestigungsflansch (25) der Luftleitplatte (21) ist.Cooking appliance according to one of the preceding claims 3 or 4, characterized in that the embossing (35) is in line contact with the fastening flange (25) of the air guide plate (21). Gargerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Prägung (35) mit Bezug auf eine Umfangskante (37) der Luftleitplatte (21) nach innen versetzt angeordnet ist.Cooking appliance according to one of the preceding claims, characterized in that the embossing (35) is arranged offset inwards with respect to a peripheral edge (37) of the air guide plate (21). Gargerät nach Anspruch 6, dadurch gekennzeichnet, dass die Umfangskante (37) der Luftleitplatte (21) und die Muffelwand (5) über einen Zwischenraum (z) beabstandet sind. Cooking appliance according to claim 6, characterized in that the peripheral edge (37) of the air guide plate (21) and the muffle wall (5) are spaced apart by an intermediate space (z). Gargerät nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass die Umfangskante (37) der Luftleitplatte (21) in Richtung auf die Muffelwand (5) abgebogen ist.Cooking appliance according to claim 4 or 5, characterized in that the peripheral edge (37) of the air guide plate (21) is bent in the direction of the muffle wall (5). Gargerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die in der Muffelwand (5) ausgebildete Prägung (35) in fester Verbindung mit dem Befestigungsflansch (25) der Luftleitplatte (21) ist.Cooking appliance according to one of the preceding claims, characterized in that the embossment (35) formed in the muffle wall (5) is in fixed connection with the fastening flange (25) of the air guide plate (21). Gargerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Befestigungsflansch über eine Schraubverbindung (51) an der Muffelwand befestigt ist.Cooking appliance according to one of the preceding claims, characterized in that the fastening flange is fastened to the muffle wall via a screw connection (51). Gargerät nach Anspruch 10, dadurch gekennzeichnet, dass eine Schrauböffnung (45) des Befestigungsflansches (25) kragenförmig ausgebildet ist.Cooking appliance according to claim 10, characterized in that a screw opening (45) of the mounting flange (25) is collar-shaped.
EP04005707A 2003-03-31 2004-03-10 Cooking device Expired - Lifetime EP1464898B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10314571A DE10314571A1 (en) 2003-03-31 2003-03-31 Cooking appliance
DE10314571 2003-03-31

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EP1464898A1 true EP1464898A1 (en) 2004-10-06
EP1464898B1 EP1464898B1 (en) 2009-01-07

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EP04005707A Expired - Lifetime EP1464898B1 (en) 2003-03-31 2004-03-10 Cooking device

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EP (1) EP1464898B1 (en)
AT (1) ATE420324T1 (en)
DE (2) DE10314571A1 (en)
ES (1) ES2319284T3 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2072911A1 (en) * 2007-12-19 2009-06-24 BSH Bosch und Siemens Hausgeräte GmbH Warm air or circulating air oven
EP2372256A1 (en) * 2010-03-31 2011-10-05 Electrolux Home Products Corporation N.V. Oven muffle and oven comprising such muffle
EP2746675A1 (en) * 2012-12-19 2014-06-25 BSH Bosch und Siemens Hausgeräte GmbH Cooking device which can be illuminated
WO2021154167A1 (en) * 2020-01-29 2021-08-05 Femas Metal San. Ve Tic. A.S. Domestic oven comprising a rear wall cover on muffle
US20220034516A1 (en) * 2020-07-29 2022-02-03 Electrolux Home Products, Inc. Oven cavity wrapper having a structural embossment and associated convection features

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GB2054833A (en) * 1979-06-25 1981-02-18 Tokyo Shibaura Electric Co Fan-assisted cooking ovens
EP0245617A2 (en) * 1986-05-15 1987-11-19 Kabushiki Kaisha Toshiba Hot-air circulation cooking oven
EP0833110A1 (en) * 1996-09-30 1998-04-01 Bosch-Siemens HausgerÀ¤te GmbH Oven with a blower
DE19831087A1 (en) * 1998-07-10 2000-01-13 Bsh Bosch Siemens Hausgeraete Oven with blower assisted circulation promoting more uniform heating and browning even at lower air flow rates

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DE2950946C2 (en) * 1979-12-18 1984-08-09 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Oven with fan and grill element
DE3506760A1 (en) * 1985-02-26 1986-09-04 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Baking and roasting oven
DE4105300C2 (en) * 1991-02-20 1997-02-13 Bosch Siemens Hausgeraete Fan for a convection oven

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Publication number Priority date Publication date Assignee Title
GB2054833A (en) * 1979-06-25 1981-02-18 Tokyo Shibaura Electric Co Fan-assisted cooking ovens
EP0245617A2 (en) * 1986-05-15 1987-11-19 Kabushiki Kaisha Toshiba Hot-air circulation cooking oven
EP0833110A1 (en) * 1996-09-30 1998-04-01 Bosch-Siemens HausgerÀ¤te GmbH Oven with a blower
DE19831087A1 (en) * 1998-07-10 2000-01-13 Bsh Bosch Siemens Hausgeraete Oven with blower assisted circulation promoting more uniform heating and browning even at lower air flow rates

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2072911A1 (en) * 2007-12-19 2009-06-24 BSH Bosch und Siemens Hausgeräte GmbH Warm air or circulating air oven
EP2372256A1 (en) * 2010-03-31 2011-10-05 Electrolux Home Products Corporation N.V. Oven muffle and oven comprising such muffle
EP2746675A1 (en) * 2012-12-19 2014-06-25 BSH Bosch und Siemens Hausgeräte GmbH Cooking device which can be illuminated
WO2021154167A1 (en) * 2020-01-29 2021-08-05 Femas Metal San. Ve Tic. A.S. Domestic oven comprising a rear wall cover on muffle
US20220034516A1 (en) * 2020-07-29 2022-02-03 Electrolux Home Products, Inc. Oven cavity wrapper having a structural embossment and associated convection features

Also Published As

Publication number Publication date
EP1464898B1 (en) 2009-01-07
ES2319284T3 (en) 2009-05-06
DE502004008806D1 (en) 2009-02-26
DE10314571A1 (en) 2004-10-14
ATE420324T1 (en) 2009-01-15

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