EP0088711B1 - Fettschirm und Schutzschild zum Schutz des Gebläses eines elektrischen multifunktionellen oder Warmluft Haushaltkochherdes - Google Patents

Fettschirm und Schutzschild zum Schutz des Gebläses eines elektrischen multifunktionellen oder Warmluft Haushaltkochherdes Download PDF

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Publication number
EP0088711B1
EP0088711B1 EP19830440017 EP83440017A EP0088711B1 EP 0088711 B1 EP0088711 B1 EP 0088711B1 EP 19830440017 EP19830440017 EP 19830440017 EP 83440017 A EP83440017 A EP 83440017A EP 0088711 B1 EP0088711 B1 EP 0088711B1
Authority
EP
European Patent Office
Prior art keywords
screen
panel
turbine
mouth
oven
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
Application number
EP19830440017
Other languages
English (en)
French (fr)
Other versions
EP0088711A1 (de
Inventor
Bernard Logel
Pierre Tissot
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.)
De Dietrich et Cie SA
Original Assignee
De Dietrich et Cie SA
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 De Dietrich et Cie SA filed Critical De Dietrich et Cie SA
Publication of EP0088711A1 publication Critical patent/EP0088711A1/de
Application granted granted Critical
Publication of EP0088711B1 publication Critical patent/EP0088711B1/de
Expired 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
    • F24C15/325—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation electrically-heated

Definitions

  • the invention relates to a grease and baffle screen to be placed in front of the air inlet of the turbine in a multifunctional or fan-assisted domestic electric oven.
  • This distributor has a central perforated zone opposite the turbine for the passage of the sucked air.
  • the total surface of the distributor is provided less than the total section of the oven so as to provide a gap between its edges and the side walls of the muffle. By this interval, the air sucked through the perforated area is reintroduced into the interior volume of the oven.
  • the passage of air takes place through lateral slits cut in the distributor.
  • This type of oven is very useful because it combines the advantages of conventional ovens with those of fan-assisted heat.
  • the centrifugal turbine has been provided with an annular resistance which makes it possible to re-inject hot air into the oven and thus obtain a uniform interior heat which is better distributed.
  • This type of oven comprising top and bottom resistances of sufficient power and appropriate control, ensures perfect cooking in all cases. This, in particular, for certain delicate baking dishes such as wet bottom pies: fruit pies or pizzas, because there is simultaneously sufficient heat below and above whatever its position in the oven.
  • Perforated or perforated walls have already been used to protect the electrical heating resistances in an oven or to better diffuse and distribute the hot air blown over the resistors towards the interior of the oven.
  • French Patent No. 2,287,024 Gentilini and Berthon discloses the use of a wall having regularly spaced horizontal slits to distribute the forced air uniformly over the entire height of the oven.
  • Each of these horizontal slots is delimited by vertical bands juxtaposed horizontally extended rearward by a horizontal return acting as a deflector for the upward air flow towards each of the slots.
  • These deflectors have a regularly increasing width, from bottom to top to ensure the uniform distribution of the hot air flow. After passing through the oven, the heating air for the dishes completes its circuit downwards, passing through the bottom plate to be recycled by the turbines.
  • This bottom plate is provided with peripheral openings which leave the central part cleared for the arrangement of the dishes and their heating.
  • German patent application Gaggenau published under No. 2,442,940 discloses the principle of the interposition of a fixed part as protection against splashes of grease in front of the suction surface of the turbine.
  • the fixed part used as protection against projections is constituted by a rebound metal filter. The grease splashes are thus stopped by the filter before they enter the turbine.
  • this filter requires frequent cleaning and, in practice, it is not the habit of the housewife to clean the filter of her oven before each cooking.
  • the protective screen is formed by a screen plate which is removably or retractably disposed in front of the perforated suction zone of the rear plate of the oven constituting the suction mouth of the turbine and there is maintained at a fixed distance determining a constant interval forming a baffle, the interval being such that the passage section of the baffle thus formed between the screen and said mouth corresponds at least to the suction section of the turbine.
  • the removable or retractable grease shield in front of the suction section of the turbine therefore forms a direct obstacle for projections and imposes on the fine droplets entrained a baffled path which, thanks to its technical form and at the interval value, allows almost all of the grease to be deposited before the turbine enters.
  • the air inlet of the turbine into a multifunctional domestic or fan-assisted electric oven is not protected from splashes, fumes and greasy micro-fogs which, by suction, come into contact with the fins of the turbine and are projected , by centrifugal effect, on the annular resistance surrounding the turbine.
  • the invention proceeds from the following general idea.
  • a removable or retractable grease shield is provided in front of the suction section of the turbine.
  • This screen 1 is arranged opposite the perforated zone 2 for the air inlet of the turbine 3 equipped with its annular resistance 4, at an appropriate distance defining an interval 5, for example four millimeters for a common domestic oven.
  • This distance corresponds to a passage at least equal to the suction surface of the turbine 3 or neighboring.
  • the surface of the screen 1 is such that it completely covers the suction section or projects slightly beyond it.
  • Said screen 1 defines, with the wall adjacent to the heat distributor 6, a baffle 7 which imposes on the flow of aspirated air a sinuous path during which it discharges its fatty components in suspension.
  • the screen 1 is preferably made of cut and enamelled sheet metal, for example of simple geometric shape (hexagon, square ). It has, in a removable version ( Figures 3, 4 and 5), hooking means 8 and holding means 9 of the interval 5, separate or combined.
  • the screen 1 has an octagonal shape.
  • the two lateral lower sides have tabs such as 10 of width equal to the interval 5, formed, for example, by folding an edge provided for cutting and folded at right angles later as shown in FIG. 3. These tabs 10 constitute the holding means 9.
  • the hooking means 8 are produced in the form of a button-handle 11 comprising a conical tip 12 followed by a groove 13, a cylindrical part 14, a circular rim 15 with an annular projection and a handle 16, for example in the form of a frustoconical element 17.
  • the button-handle 11 is fitted by its cylindrical part 14 in a circular cutout 18 formed in the upper part of the screen 1 and is immobilized there by a retaining part 19, for example by pinching in contact with the face. back of the screen.
  • the conical tip 12 crosses one of the perforations in zone 2 until it comes into contact with the front edge of the cylindrical part 14.
  • the largest diameter of the conical portion 12 exactly matches or slightly exceeds the diameter of a perforation.
  • the interval corresponding to the groove 13 slightly exceeds the thickness of the distributor heat 6 to ensure good support by avoiding any floating.
  • the length of the cylindrical part corresponds to the interval 5 plus the thickness of the sheet.
  • This variant allows easy installation and removal of the screen.
  • FIG. 4 Another embodiment is shown in FIG. 4. According to this embodiment, the hooking means 8 and the holding means 9 are combined.
  • the general shape remains octagonal.
  • FIG. 5 and 5a Another embodiment shown in Figures 5 and 5a is particularly simple. Square in shape, it has as a holding means 9 a lower edge 25 bent at right angles over its entire length or at the ends simply to provide an additional passage 26 for air, and an inclined upper edge 27 with central part 28 more wide, realizing the attachment itself by engagement in a special slot provided in the air distributor above the perforated area.
  • the runoff is collected either by a drip tray, or by a gutter on the same piece as 29.
  • the rack 32 can be controlled in translation by a micromotor 34 slaved to the oven control button.
  • FIG. 7 Another embodiment (FIG. 7) uses a control linkage terminated by a rod 35 articulated on a technical extension 36 provided in the upper part of a circular screen mounted to pivot about an upper axis 37.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Baking, Grill, Roasting (AREA)

Claims (7)

1. Schirm zum Schutz der Turbine (3) und seines Widerstandes (4) vor Fettablagerungen und eventuellen Spritzern in einem multifunktionellen Elektro- oder Warmluftherd, dadurch gekennzeichnet, daß der Schutzschirm als Abschirmplatte ausgebildet ist, welche abnehmbar oder einklappbar vor der, die Ansaugöffnung des Gebläses bildenden perforierten Ansaugzone (2) der Ofenrückwand angebracht und dort, ein Schutzblech darstellend, in einem festgelegten Abstand, der einen gleichbleibenden Spalt (5) bildet, gehalten ist, wobei der Spalt so bestimmt ist, daß der zwischen dem Schutzschild und der genannten Ansaugöffnung gebildete Durchgangsquerschnitt mindestens dem Ansaugquerschnitt des Gebläses entspricht.
2. Schirm nach Anspruch 1, dadurch gekennzeichnet, daß er in eine der Öffnungen der perforierten Ansaugzone (2) der, die Ansaugöffnung bildenden, Hinterwand des Ofens eingehängt ist.
3. Schirm nach Anspruch 2, dadurch gekennzeichnet, daß die Befestigung mit Hilfe eines Knopfgriffes (11) geschieht, von dem eine konische Spitze (12) durch eine der Öffnungen der perforierten Zone ragt, wobei dessen Auskehlung (13) den Knopfgriff (11) und die Abschirmplatte (1) auf dem Rand der Öffnung festhält und daß sich der Knopfgriff (11) auf der anderen Seite der Abschirmplatte (1) mit einem zylindrischen Teil (14) fortsetzt, dessen Länge gleich ist wie die um die Plattendicke vergrößerte Spaltweite (5) und daß er mit einem Kreisförmigen Rand (15) und einem Handgriff (16) endet.
4. Schirm nach Anspruch 1, dadurch gekennzeichnet, daß er durch mindestends einem seiner rechtwinklig abgebogenen Ränder (10) in gewissem Abstand vom Rand der Ansaugöffnung gehalten ist.
5. Schirm nach Anspruch 1, dadurch gekennzeichnet, daß er, mit Hilfe von gestantzten Krampen (20) in Form von schräg gestellten Zungen (21) auf Abstand zum Rand der Ansaugöffnung gehalten ist, wobei die Krampen einen Sockel aufweisen, der die Perforationen der Ansaugöffnung paßt, um sich dort abzustützen.
6. Schirm nach Anspruch 1, dadurch gekennzeichnet, daß die Abschirmplatte in Form einer schwenkbaren Ebene ausgeführt ist.
7. Schirm nach Anspruch 1, dadurch gekennzeichnet, daß die Abschirmplatte in Form von schwenkbaren, durch einen Elektromotor betätigten, Sektoren ausgeführt ist.
EP19830440017 1982-03-04 1983-03-03 Fettschirm und Schutzschild zum Schutz des Gebläses eines elektrischen multifunktionellen oder Warmluft Haushaltkochherdes Expired EP0088711B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8203802A FR2522787B1 (fr) 1982-03-04 1982-03-04 Ecran pare-graisse et chicane pour la protection de la turbine dans les fours electriques domestiques multifonctions ou a chaleur tournante
FR8203802 1982-03-04

Publications (2)

Publication Number Publication Date
EP0088711A1 EP0088711A1 (de) 1983-09-14
EP0088711B1 true EP0088711B1 (de) 1987-01-21

Family

ID=9271709

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830440017 Expired EP0088711B1 (de) 1982-03-04 1983-03-03 Fettschirm und Schutzschild zum Schutz des Gebläses eines elektrischen multifunktionellen oder Warmluft Haushaltkochherdes

Country Status (3)

Country Link
EP (1) EP0088711B1 (de)
DE (1) DE3369377D1 (de)
FR (1) FR2522787B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009002863A1 (de) 2009-05-06 2010-11-18 BSH Bosch und Siemens Hausgeräte GmbH Hausgerätvorrichtung
DE102009045787A1 (de) * 2009-10-19 2011-05-12 BSH Bosch und Siemens Hausgeräte GmbH Gargerätefiltereinheit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2442940A1 (de) * 1974-09-07 1976-03-18 Gaggenau Werke Warmluftbackofen mit luftumwaelzung
FR2287024A1 (fr) * 1974-10-04 1976-04-30 Gentilini Et Berthon Four a convection
DE7819660U1 (de) * 1978-06-30 1978-10-05 Buderus Ag, 6300 Lahn-Wetzlar Gasbeheiztes heissluftbackgeraet

Also Published As

Publication number Publication date
DE3369377D1 (en) 1987-02-26
FR2522787A1 (fr) 1983-09-09
EP0088711A1 (de) 1983-09-14
FR2522787B1 (fr) 1987-03-20

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