High-frequency heating apparatus

F - Mech Eng,Light,Heat,Weapons – 24 – C

Patent

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Details

F24C 15/16 (2006.01) F24C 7/02 (2006.01) H05B 6/76 (2006.01) H05B 6/80 (2006.01)

Patent

CA 2244611

In a microwave oven, a driving motor is fitted inside a fitting member that is fixed to a cabinet. The upper part of the output spindle of the driving motor is disposed through the fitting member so as to protrude outward, and is fitted into the lower part of a linking member. The lower part of the rotary shaft of a turntable is fitted into the upper part of the linking member. The linking member is covered by a cover, and the lower part of the cover is fitted to the fitting member. On the upper part of and outside the cover, a coil spring for preventing leakage of radio waves is fitted so as to surround the rotary shaft. The coil spring is kept in close contact with the rim of a through hole formed in the bottom surface of a heating chamber. An overhang for drainage is formed in the linking member to prevent fluid from coming into contact with the output spindle.

Dans un four à micro-ondes, un moteur d'entraînement est monté dans un élément de montage qui est fixé à l'habillage de l'appareil. La partie supérieure de l'axe de sortie du moteur d'entraînement traverse l'élément de montage de manière à faire saillie à l'extérieur et se loge dans la partie inférieure d'un élément de liaison. La partie inférieure de l'arbre tournant d'une table tournante est logée dans la partie supérieure de l'élément de liaison. L'élément de liaison est recouvert par un couvercle, et la partie inférieure du couvercle est posée contre l'élément de liaison. Sur la partie supérieure du couvercle et à l'extérieur de celui-ci, un ressort hélicoïdal pour prévenir la fuite d'ondes radio est posé de manière à entourer l'arbre rotatif. Le ressort hélicoïdal est maintenu en contact étroit avec le bord d'un trou traversant percé dans le fond de la chambre de chauffe. L'élément de liaison comporte un rebord d'écoulement pour empêcher un liquide d'entrer en contact avec l'axe de sortie.

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