JPS6210391U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の一実施例による高周波加熱装
置の要部断面図、第２図は通風孔Ａの斜視図、第
３図は高周波電源装置に用いられる回路図の一例
である。 ６……昇圧トランス、６ａ……１次側巻線、６
ｂ……高圧２次側巻線、６ｃ……低圧２次側巻線
、１０……周波数変換器、１３……マグネトロン
、２３……シールドケース、２３ａ……壁面、２
３ｂ……通風孔Ａ、２４，２５……磁性体、２８
……フアン、２９……通風孔Ｂ、３０……エアガ
イド。 FIG. 1 is a sectional view of a main part of a high-frequency heating device according to an embodiment of the present invention, FIG. 2 is a perspective view of a ventilation hole A, and FIG. 3 is an example of a circuit diagram used in the high-frequency power supply device. 6...Step-up transformer, 6a...Primary winding, 6
b...High voltage secondary winding, 6c...Low voltage secondary winding, 10...Frequency converter, 13...Magnetron, 23...Shield case, 23a...Wall surface, 2
3b... Ventilation hole A, 24, 25... Magnetic material, 28
...Fan, 29...Vent B, 30...Air guide.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 商用周波数よりも高い周波数で動作する周波数
変換器１０と、この周波数変換器１０を１次側巻
線６ａに接続するとともに高圧２次側巻線６ｂを
整流回路Ｃを介してマグネトロン１３のアノード
に、低圧２次側巻線６ｃをマグネトロン１３のカ
ソードに接続する昇圧トランス６と、この昇圧ト
ランス６の１次側巻線６ａを巻回した磁性体２４
を壁面２３ａを隔てて外側に位置させるとともに
前記両２次側巻線６ｂ，６ｃを巻回した前記磁性
体２４と電磁結合する磁性体２５及び前記整流回
路Ｃを収納したシールドケース２３と、このシー
ルドケース２３に設けた通風孔Ａ２３ｂを介して
シールドケース２３内を冷却するとともにシール
ドケース２３に取付けたエアガイド３０に設けた
通風孔Ｂ２９を介して昇圧トランス６の１次側巻
線６ａを冷却するフアン２８とからなる高周波加
熱装置。 A frequency converter 10 that operates at a frequency higher than the commercial frequency is connected to the primary winding 6a, and the high voltage secondary winding 6b is connected to the anode of the magnetron 13 via a rectifier circuit C. , a step-up transformer 6 that connects the low-voltage secondary winding 6c to the cathode of the magnetron 13, and a magnetic material 24 around which the primary winding 6a of the step-up transformer 6 is wound.
A shield case 23 houses a magnetic body 25 and the rectifier circuit C, which are positioned outside across a wall surface 23a and electromagnetically coupled to the magnetic body 24 around which both the secondary windings 6b and 6c are wound. The inside of the shield case 23 is cooled through a ventilation hole A23b provided in the shield case 23, and the primary winding 6a of the step-up transformer 6 is cooled through a ventilation hole B29 provided in an air guide 30 attached to the shield case 23. A high frequency heating device consisting of a fan 28.