JPS61104333U

JPS61104333U -

Info

Publication number: JPS61104333U
Application number: JP1984190657U
Authority: JP
Priority date: 1984-12-14
Filing date: 1984-12-14
Publication date: 1986-07-02

Description

[Brief explanation of the drawing]

第１図は本考案に係る電子レンジのターンテー
ブル部の拡大詳細断面図であり、第２図は電子レ
ンジの要部側断面図、第３図は第２図のターンテ
ーブルを取去つた状態の加熱室底部上面図、第４
図は従来のターンテーブル部の拡大詳細断面図で
あり、第５図は圧電素子部の要部断面図、第６図
は第５図に示す圧電素子の出力電圧波形図、第７
図は圧電素子出力電圧のＲ―Ｃフイルター回路図
、第８図は出力ピーク電圧平均直と重量との関係
図、第９図はマグネトロン制御回路図である。符号、１：加熱室、２：ターンテーブル、３：
支持ローラ、３ｂ：ローラ、７：ローラの回転軌
跡、８：圧電素子、１９：圧電素子押圧金具。 Fig. 1 is an enlarged detailed sectional view of the turntable part of the microwave oven according to the present invention, Fig. 2 is a side sectional view of the main part of the microwave oven, and Fig. 3 is a state in which the turntable shown in Fig. 2 is removed. Top view of the bottom of the heating chamber, No. 4
The figure is an enlarged detailed sectional view of a conventional turntable section, FIG. 5 is a sectional view of a main part of a piezoelectric element section, FIG.
The figure is an RC filter circuit diagram of the piezoelectric element output voltage, FIG. 8 is a relationship diagram between the output peak voltage average directivity and weight, and FIG. 9 is a magnetron control circuit diagram. Code, 1: heating chamber, 2: turntable, 3:
Support roller, 3b: roller, 7: rotation locus of roller, 8: piezoelectric element, 19: piezoelectric element pressing metal fitting.

Claims

[Scope of utility model registration request]

A support roller that supports the turntable and rotates with the bottom wall of the heating chamber is disposed within the heating chamber, and a piezoelectric transducer is disposed at the roller rotation locus of the bottom wall of the heating chamber that generates stress due to rotation of the support roller. In the weight detection device for a microwave oven, the weight of the object to be heated placed on the turntable is detected by detecting the voltage generated in the piezoelectric transducer when the support roller rotates. . A weight detection device for a microwave oven, characterized in that the piezoelectric transducer is pressure-bonded to the back surface of the roller rotation trajectory portion of the bottom wall of the heating chamber.