JPS60118890U

JPS60118890U - High frequency heating device

Info

Publication number: JPS60118890U
Application number: JP692984U
Authority: JP
Inventors: 岩淵　康司; 杉本　賢治; 哲男窪田
Original assignee: 株式会社日立ホームテック
Priority date: 1984-01-21
Filing date: 1984-01-21
Publication date: 1985-08-10

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は本考案の一実施例による高周波加熱装置の主要
部を示すブロックダイヤグラムで、第２−図〜第４図は
受皿５内に埋め込んだ受信アンテナ７の形状例を示す正
面図で、第５図は受信アンテナ７の一端７ａから受皿５
の側面を見た部分拡大図で、第６図は第５図におけるＸ
Ｙ矢印方向から見た受信アンテナ７の一端７ａ付近の拡
大図で、第７図は受皿７を加熱室３内に入れた状態での
減衰器８付近の断面図で、第８図は食品温度と誘電体損
失εγ″との関係を示す説明図で、第９図は高周波エネ
ルギーによる加熱時間と受信信号レベルとの関係を示す
説明図である。１・・・高周波発振器、３・・・加熱室、５・・・誘電
体からなる受皿、６・・・被加熱物、７・・・受信アン
テナ、７ａ・・・受信アンテナ７の一端、８・・・減衰
器、８ｃ・・・金属管、９・・・同軸線路、９ａ・・・
中心導体。第３図第４図FIG. 1 is a block diagram showing the main parts of a high-frequency heating device according to an embodiment of the present invention, and FIGS. 2-4 are front views showing examples of the shape of a receiving antenna 7 embedded in a saucer 5. FIG. 5 shows the receiving antenna 7 from one end 7a to the saucer
Figure 6 is a partial enlarged view of the side of the
This is an enlarged view of the vicinity of one end 7a of the receiving antenna 7 viewed from the direction of the Y arrow. FIG. 7 is a sectional view of the vicinity of the attenuator 8 with the saucer 7 placed in the heating chamber 3. FIG. FIG. 9 is an explanatory diagram showing the relationship between the heating time by high frequency energy and the received signal level. 1... High frequency oscillator, 3... Heating chamber, 5... saucer made of dielectric material, 6... object to be heated, 7... receiving antenna, 7a... one end of receiving antenna 7, 8... attenuator, 8c... metal tube , 9... coaxial line, 9a...
center conductor. Figure 3 Figure 4

Claims

[Scope of utility model registration request]

A heating chamber 3 that houses an object to be heated 6, a high frequency oscillator 1 that supplies high frequency energy into the heating chamber 3, and a part of the high frequency energy from the high frequency oscillator 1 to the object to be heated 6.
In a high-frequency heating device that includes a receiving antenna 7 that extracts a signal corresponding to a temperature change in dielectric loss, and controls the oscillation of a high-frequency oscillator 1 using the signal, a saucer 5 made of a dielectric material on which an object to be heated 6 is placed. A receiving antenna 7 is embedded inside the heating chamber 3, and an attenuator 8 made of a metal tube 8c is fixed to the outer wall of the heating chamber 3. When the saucer 5 is placed in the heating chamber 3, one end 7a of the receiving antenna 7 becomes the attenuator. protrudes within 8,
One end 7a of the receiving antenna 7 and the center conductor 9a of the coaxial line 9 connected to the circuit that controls the operation of the high-frequency oscillator 1 are separated from each other in the attenuator 8 and coupled at high frequency to extract the received signal. A high frequency heating device characterized by: