EP0151435B1 - Mikrowellenherd mit einem Wellenrührer - Google Patents

Mikrowellenherd mit einem Wellenrührer Download PDF

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Publication number
EP0151435B1
EP0151435B1 EP85100703A EP85100703A EP0151435B1 EP 0151435 B1 EP0151435 B1 EP 0151435B1 EP 85100703 A EP85100703 A EP 85100703A EP 85100703 A EP85100703 A EP 85100703A EP 0151435 B1 EP0151435 B1 EP 0151435B1
Authority
EP
European Patent Office
Prior art keywords
enclosure
axis
stirrer
shaft
rotation
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
EP85100703A
Other languages
English (en)
French (fr)
Other versions
EP0151435A2 (de
EP0151435A3 (en
Inventor
Jean-François Mary Société MOULINEX Lemoine
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.)
Moulinex SA
Original Assignee
Moulinex 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 Moulinex SA filed Critical Moulinex SA
Priority to AT85100703T priority Critical patent/ATE35735T1/de
Publication of EP0151435A2 publication Critical patent/EP0151435A2/de
Publication of EP0151435A3 publication Critical patent/EP0151435A3/fr
Application granted granted Critical
Publication of EP0151435B1 publication Critical patent/EP0151435B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/74—Mode transformers or mode stirrers

Definitions

  • the invention relates to microwave ovens equipped with a wave brewer.
  • microwave ovens comprising a cooking enclosure, a microwave generator delivering microwave energy to said enclosure via a waveguide carried by one of the walls of the enclosure, and a wave stirrer disposed at the outlet of the waveguide and comprising a rotary shaft carrying a flange equipped with a series of metal blades intended to ensure distribution of energy in the enclosure.
  • microwave ovens are, for example, known from the documents DE-A 2 806 158 or D E-A 2 758 705.
  • the object of the invention is to improve the regularity of energy distribution in all the regions of the enclosure.
  • the stirrer shaft is mounted inclined with respect to an axis perpendicular to the wall of the enclosure and is itself subjected to a drive mechanism which causes it to move slowly, during its rotation , on a conical surface whose axis coincides with said perpendicular axis, the flange and the blades of the brewer thus describing, during their rotation around the shaft, a slow nutation movement around said axis.
  • the microwave oven of FIG. 1 includes a cooking enclosure 10, a microwave generator 12 delivering microwave energy into the enclosure 10 via a waveguide 14 carried by the upper wall 16 of the enclosure, and a wave stirrer 18 disposed at the outlet of the wave guide 14 and comprising a rotary shaft 20 carrying a flange 22 equipped with a series of metal blades 24 intended to ensure distribution energy in the enclosure 10. Between the stirrer 18 and the enclosure 10 is disposed a protective cover 26 made of material permeable to microwaves.
  • the shaft 20 of the stirrer 18 is mounted inclined relative to a vertical axis 28 and is itself subjected to a drive mechanism 30 which causes it to move slowly during its rotation on a conical surface 32 whose axis coincides with axis 28; the flange 22 and the blades 24 thus describe, during their rotation around the shaft 20, a slow nutation movement around said axis.
  • the shaft 20 of the stirrer is mounted in an inclined bearing 34 arranged in a plate 36 which the drive mechanism 30 rotates slowly around the axis 28 on a horizontal circular seat 38 arranged in a housing 40 fixed to the wall 16.
  • the inclined paier 34 is located in the center of the horizontal circular seat 38.
  • the stirrer 18 is rotated by the stream of cooling air from the microwave generator 12, this by the action of this stream (arrow F) on the blades 24.
  • the mechanism 30 for driving the rotating plate 36 is constituted by a speed reducer interposed between the shaft 20 and this plate.
  • this speed reducer comprises a bevel gear 42 which is integral with the shaft 20 and which is engaged with a train of several gears which are carried by the plate 36 and whose last 44 is engaged with a fixed toothed crown 46 formed in the housing 40 and concentric with the vertical axis 28.
  • This gear train comprises a first wheel 48 which is engaged with the bevel pinion 42 and which is integral with a pinion 50.
  • This pinion 50 is engaged with a second wheel 52 which is integral with the pinion 44.
  • the first wheel 48 and its pinion 50 are mounted on a bearing 54; the second wheel 52 and its pinion 44 are mounted on a bearing 56; the bearings 54 and 56 are located on the upper face of the plate 36.
  • the air flow rotates the wave stirrer 18 at a speed of the order of, for example, sixty revolutions per minute.
  • This movement is communicated to the pinions and wheels 42, 48, 50, 52 and 44.
  • the pinion 44 rolling in the ring gear 46, drives in this movement its bearing 56 (arrow G in FIG. 3) and, consequently, the plate 36 according to a slow rotational movement inside the housing 40, this at a speed of the order, for example, of a revolution and a half per minute.
  • the axis of the shaft 20 of the wave stirrer moves slowly on the conical surface 32 during the rotation of this shaft, that is to say that the brewer 18, and leaving its blades 24, are animated, during their rotation, of a slow nutation movement.
  • the consecutive variations in inclination of the blades 24 ensure good distribution of the microwave energy in all the regions of the enclosure 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Photoreceptors In Electrophotography (AREA)

Claims (4)

1. Mikrowellen-Backofen mit einer Ofenkammer (10), einem Mikrowellengenerator (12), der Mikrowellenenergie in die Ofenkammer (10) mittels eines Wellenleiters (14) liefert, der von einer der Wände (16) der Ofenkammer (10) gehalten ist, und mit einem Wellenrührer (18), der am Ausgang des Wellenleiters (14) angeordnet ist und eine drehbare Welle (20) aufweist, die einen Flansch (22) trägt, der mit einer Reihe von Metallblättern (24) ausgerüstet ist, welche dazu dienen, die Energie in der Ofenkammer (10) zu verteilen, dadurch gekennzeichnet, dass die Welle (20) des Wellenrührers (18) bezüglich einer zur Wand (16) der Ofenkammer senkrechten Achse (28) geneigt gehalten und selbst einem Antriebsmechanismus (30) unterworfen ist, der sie während ihrer Drehung langsam auf einer Kegelfläche (32) verschiebt, deren Achse mit der senkrechten Achse (28) zusammenfällt, so dass der Flansch (22) und die Metallblätter (24) während ihrer Drehung um die Welle (20) eine langsame Nutationsbewegung um die Achse (28) ausführen.
2. Mikrowellen-Backofen nach Anspruch 1, dadurch gekennzeichnet, dass die Wand (16) die obere Wand der Ofenkammer (10) ist und somit die Achse (28) vertikal ist, dass die Welle (20) des Wellenrührers (18) in einem geneigten Lager (34) gehalten ist, das in einer Platte (36) ausgebildet ist, welche der Antriebsmechanismus (30) langsam um die vertikale Achse (28) auf einem horizontalen kreisförmigen Sitz (38) dreht, der in einem an der oberen Wand (16) befestigten Gehäuse (40) ausgebildet ist, und dass das geneigte Lager (34) in der Mitte des kreisförmigen horizontalen Sitzes (38) angeordnet ist.
3. Mikrowellen-Backofen nach Anspruch 2, dadurch gekennzeichnet, dass der Wellenrührer (18) durch den Kühlluftstrom (F) des Mikrowellengenerators (12) in Drehung versetzt wird und der Antriebsmechanismus (30) der Drehplatte (36) aus einem zwischen der Welle (20) des Wellenrührers und dieser Drehplatte (36) angeordneten Untersetzungsgetriebe besteht.
4. Mikrowellen-Backofen nach Anspruch 3, dadurch gekennzeichnet, dass das Untersetzungsgetriebe ein Antriebskegelrad (42) aufweist, das mit der Welle (20) des Wellenrührers fest verbunden ist und das in Eingriff ist mit einem Getriebe mit mehreren Zahnrädern, von denen jedes durch ein Lager (54, 56) gehalten ist, die an der Drehplatte (36) selbst eingesetzt sind, wobei das letzte Zahnrad (44) dieses Getriebes in Eingriff ist mit einem festen Zahnkranz (46), der im Gehäuse (40) ausgebildet und zur vertikalen Achse (28) konzentrisch ist, wodurch dieses letzte Zahnrad (44) die Drehplatte (36) mit einer langsamen Drehbewegung im Inneren des Gehäuses (40) antreibt.
EP85100703A 1984-01-26 1985-01-24 Mikrowellenherd mit einem Wellenrührer Expired EP0151435B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85100703T ATE35735T1 (de) 1984-01-26 1985-01-24 Mikrowellenherd mit einem wellenruehrer.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8401205A FR2558936B1 (fr) 1984-01-26 1984-01-26 Four a micro-ondes equipe d'un brasseur d'ondes
FR8401205 1984-01-26

Publications (3)

Publication Number Publication Date
EP0151435A2 EP0151435A2 (de) 1985-08-14
EP0151435A3 EP0151435A3 (en) 1987-05-06
EP0151435B1 true EP0151435B1 (de) 1988-07-13

Family

ID=9300503

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85100703A Expired EP0151435B1 (de) 1984-01-26 1985-01-24 Mikrowellenherd mit einem Wellenrührer

Country Status (6)

Country Link
EP (1) EP0151435B1 (de)
AT (1) ATE35735T1 (de)
DE (1) DE3563791D1 (de)
ES (1) ES284148Y (de)
FR (1) FR2558936B1 (de)
PT (1) PT79876B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2637356B2 (fr) * 1984-01-26 1992-09-18 Moulinex Sa Four a micro-ondes equipe d'un brasseur d'ondes
TR201612497A1 (tr) 2016-09-02 2018-03-21 Arcelik As Mod kariştiriciya sahi̇p bi̇r mi̇krodalga firin

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4125751A (en) * 1976-12-30 1978-11-14 Raytheon Company Microwave oven control circuit
DE2806158C2 (de) * 1978-02-14 1982-12-23 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Doppelbackofen

Also Published As

Publication number Publication date
ES284148U (es) 1985-08-01
EP0151435A2 (de) 1985-08-14
ATE35735T1 (de) 1988-07-15
PT79876B (en) 1986-09-15
DE3563791D1 (en) 1988-08-18
PT79876A (en) 1985-02-01
FR2558936A1 (fr) 1985-08-02
FR2558936B1 (fr) 1987-11-27
EP0151435A3 (en) 1987-05-06
ES284148Y (es) 1986-04-16

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