Cylindrical Microwave Oven

Abstract

A cylindrical microwave oven comprises a shell ( 1 ) an oven cavity ( 2 ) and a microwave generator ( 3 ) inside the shell radiating microwave into the cavity. A door ( 6 ) for closing or opening the cavity ( 2 ) is mounted in the front of the shell. An upper disk cover ( 21 ), a U-shaped board ( 22 ) and a lower disk cover ( 23 ) form a cavity ( 2 ) with a front opening ( 101 ). The U-shaped board is supported between the upper cover ( 21 ) and the lower cover ( 23 ). The door ( 6 ) is a circular arc board for closing or opening the front opening ( 101 ) of the cavity ( 2 ).

1 . A cylindrical microwave oven comprising a shell and an oven cavity and a microwave generator radiating microwave into the cavity inside the shell; a door for closing or opening the cavity is mounted in the front of the shell; wherein an upper disk cover, a U-shaped board and a lower disk cover form a cavity with a front opening; the U-shaped board is supported between the upper cover and the lower cover; and the door is a circular arc board for closing or opening the front opening of the cavity. 
   
   
       2 . The cylindrical microwave oven according to  claim 1 , wherein the door comprises two door boards openable in opposite direction, and an opening mechanism for controlling the opening and closing of the two door boards mounted on the shell. 
   
   
       3 . The cylindrical microwave oven according to  claim 2 , wherein the opening mechanism comprises two long rods, two short rods and a guide board; the two long rods are V-shape hinged and their hinged axis is hinged to one terminal of the guide plate; the free ends of the two long rods are fixed on the lower portion of the two oven door boards respectively; the two short rods are V-shape hinged and their hinged axis is connected slideably to the other terminal of the guide board; the free ends of the two short rods are hinged to the middle portion of the two long rods respectively; and the guide board fixed on the shell. 
   
   
       4 . The cylindrical microwave oven according to  claim 2 , wherein the butt sides of the two door boards are mounted via hook mechanisms. 
   
   
       5 . The cylindrical microwave oven according to  claim 1 , wherein the opening mechanism of the cylindrical microwave oven is that the two door boards opposite-opened along the slide way inside the shell of the microwave oven can seal the front opening of the cylindrical cavity, the gyration center of the door boards has a rotating shaft which V-shaped hinged with two rods; the free ends of the two rods fixed on the same side door boards respectively; one concentric circle of the said gyration center arranged two up-down staggered and fan out circular arc racks, each fan out terminals of the two said racks connected to a said rod respectively; each side of the symmetric line of the fan out racks mounted a gear respectively, the said gears mesh each other and each mesh to one rack respectively, one of the gears connected to the electric motor. 
   
   
       6 . The cylindrical microwave oven according to  claim 1 , wherein the opening mechanism, a driving gear mounted on the rotating shaft of the electric motor; the rotating shafts of the two gears mounted on a translation component; when the translation component is on the first position, the driving gear will mesh the first gear; when the translation component moved to the second position, the driving gear will deviate from the first gear. 
   
   
       7 . The cylindrical microwave oven according to  claim 6 , wherein the translation component is a U-shaped slice mounted on the tooth side of the two racks, both the two opening plate parts of the U-shaped slice has two holes for mounting the rotating shaft of the two gears respectively; when the U-shaped slice is on the first position, the two gears will mesh their corresponding rack and the driving gear mesh the first gear; when the U-shaped slice is on the second position where is far from the tooth side of the two racks, the two gears will deviate from their corresponding rack and the driving gear deviate from the first gear. 
   
   
       8 . The cylindrical microwave oven according to  claim 7 , wherein the said U-shaped slice inserted in a guide box on the shell of the microwave oven; the two plate parts of the U-shaped slice has a long guide hole respectively, the upper and lower surfaces of the guide box has a embossed strip inserted in the corresponding long guide hole of the U-shaped slice respectively; the guide box has an upper and a lower staggered arc grooves for containing the two racks, the two said gears are mounted in the rack guide box respectively, herein the first gear has a coaxial smaller gear; when the U-shaped slice is on the first position, the embossed strips of the top and bottom surfaces of the guide box will be in the terminal having corresponding long guide hole of the U-shaped slice, the two gears will mesh their corresponding racks and the driving gear of the electric motor will mesh the small gear of the first gear; When the U-shaped slice is on the second position, the embossed strips of the top and bottom surfaces of the guide box will be in the other terminal having corresponding long guide hole of the U-shaped slice, the two gears will deviate from their corresponding racks and the driving gear of the electric motor will deviate from the small gear of the first gear. 
   
   
       9 . The cylindrical microwave oven according to  claim 7 , wherein the top and bottom surfaces of the said guide box has a lug extending out from the tooth side of the racks respectively, the two lugs have a shaft hole respectively; a cam arranged between the two lugs, and the rotating shaft of the cam is through the shaft holes of the two lugs; the two opening plate parts of the U-shaped slice has a hole for containing the rotating shaft of the cam respectively; when the highest point of the cam deviates from the bottom of the groove of the U-shaped slice, the U-shaped slice is in the first position; when the highest point of the cam reaches the bottom of the groove of the U-shaped slice, the U-shaped slice is in the second position; the two ends of the groove bottom mounted an extension spring to connect the guide box respectively. 
   
   
       10 . The cylindrical microwave oven according to  claim 9 , wherein the shaft of the cam connected to a bar extending to radial direction, the terminal of the free end of the bar extending out of the shell of the microwave oven. 
   
   
       11 . The cylindrical microwave oven according to  claim 9 , wherein the guide box divides into the upper and lower parts, a block slice mounted between the arc guide groove of the upper part and the arc guide groove of the lower part. 
   
   
       12 . The cylindrical microwave oven according to  claim 11 , wherein the shell of the microwave oven has an opening limit switch and a closing limit switch; the opening limit switch connects to one of the two connecting rods when the door opened totally; the closing limit switch connects to the rod when the door boards closed totally; the opening limit switch, the closing limit switch and the said electric motor connected to control circuit board respectively. 
   
   
       13 . The cylindrical microwave oven according to  claim 12 , wherein the V-shape hinged shaft of the two rods used as the rotating shaft of the tray of the microwave oven; the free ends of the two rods are fixed on the bottom edge of door boards respectively. 
   
   
       14 . The cylindrical microwave oven according to  claim 12 , wherein the free ends of the V-shape hinged shaft of the two rods mounted on the top side of the door boards respectively, and the V-shape hinged shaft of the two rods mounted on the gyration center of the door boards where is upper the cavity.