| 摘要 |
PURPOSE:To reduce the friction between the shaft of a loading stand and a bearing by a structure wherein rotating function is given to the loading stand so as to rotate the loading stand when the measurement of the weight of a stuff to be heated is cooked. CONSTITUTION:A high frequency heating device consists of a heating chamber 1, a magnetron 2, a waveguide 3, a receiving pan 4, a loading stand 5, a shaft 6 to support the loading stand, a bearing 7, a gear 8 connected to the shaft 6, a drive gear 9 connected to a motor 10, a weight measuring part 11 and a control part 12. Under the condition that no rotation is given to the loading stand 5, when a stuff to be heated 14 is placed onto the catch plate 4 quietly, the measured weight, which is plotted by a mark 21 in the attached figure, is shown lighter than the actual weight. On the other hand, when the stuff to be heated 14 is placed violently, the measured weight, which is plotted by a mark 22, is shown heavier than the actual weight. Under the condition that the loading stand 5 is rotated, the friction between the shaft 6 of the loading stand 5 and the bearing 7 shifts from statical friction to dynamical friction, resulting in reducing the friction between the shaft 6 and the bearing 7 and approaching the measured weight of the stuff to be heated to the actual weight 20. |
