JPS6025876B2 - High frequency heating device - Google Patents
High frequency heating deviceInfo
- Publication number
- JPS6025876B2 JPS6025876B2 JP9894579A JP9894579A JPS6025876B2 JP S6025876 B2 JPS6025876 B2 JP S6025876B2 JP 9894579 A JP9894579 A JP 9894579A JP 9894579 A JP9894579 A JP 9894579A JP S6025876 B2 JPS6025876 B2 JP S6025876B2
- Authority
- JP
- Japan
- Prior art keywords
- high frequency
- heating chamber
- frequency
- heating device
- rotating shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/76—Prevention of microwave leakage, e.g. door sealings
Description
【発明の詳細な説明】
この発明は高周波加熱装置に関するものであり、高周波
発生器が設けられている高周波的に密封された加熱室、
上記加熱室の金属製の壁に設けた開孔を貫通するたとえ
ば送風機の回転軸、上記開孔内に形成した高周波遮蔽体
を備えた高周波加熱装置を提供するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high-frequency heating device, including a high-frequency sealed heating chamber provided with a high-frequency generator;
The present invention provides a high-frequency heating device that includes, for example, a rotating shaft of a blower that passes through an aperture provided in a metal wall of the heating chamber, and a high-frequency shield formed within the aperture.
加熱室の壁を貫通した回転軸を設け、外部で駆動して内
部に送風機のホイールを設けた高周波加熱装置が知られ
ている。A high-frequency heating device is known in which a rotating shaft passing through the wall of a heating chamber is provided, the rotating shaft is driven externally, and a blower wheel is provided internally.
しかしこの加熱室の壁に設けた開孔から高周波が漏洩し
てしまう問題がある。この回転軸は加熱室の壁の外側と
のわずかの距離をへだてて設けられた金属板により支持
されており、容量性の高周波遮蔽体を形作っている。し
かしながら、このような高周波遮蔽体は効果がなく、加
熱室を高周波的に密閉することができなし、ものであっ
た。この欠点は加熱室に高周波ガイドスリットからなる
高周波の遮蔽回路を設けることにより回避できる。However, there is a problem in that high frequency waves leak from the openings provided in the wall of the heating chamber. This axis of rotation is supported by a metal plate placed at a small distance from the outside of the heating chamber wall and forms a capacitive high-frequency shield. However, such a high frequency shield is ineffective and cannot seal the heating chamber high frequency. This drawback can be avoided by providing a high frequency shielding circuit consisting of a high frequency guide slit in the heating chamber.
たとえば加熱室の壁と送風機および高周波遮蔽体のグラ
ンドプレートとの間、もしくは送風機のホイールのハブ
に円形の溝を形成して回路を設けることができる。本発
明の目的は高周波加熱装置の高周波遮蔽の改良に関する
ものである。For example, a circuit can be provided between the wall of the heating chamber and the ground plate of the blower and the high-frequency shield, or by forming a circular groove in the hub of the wheel of the blower. The object of the invention is to improve the high frequency shielding of a high frequency heating device.
本発明の高周波加熱装置は、高周波ガイドスリットと高
周波トラップとから成る高周波遮蔽体回路を開孔に設け
た加熱室と、加熱室の壁にごくわずかの距離をへだてて
送風機の回転軸に固定した金属板よりなる容量性高周波
遮蔽体とから成る。The high-frequency heating device of the present invention includes a heating chamber in which a high-frequency shield circuit consisting of a high-frequency guide slit and a high-frequency trap is provided in an opening, and a heating chamber that is fixed to the rotating shaft of a blower by a very small distance from the wall of the heating chamber. and a capacitive high frequency shield made of a metal plate.
回転軸に回転可能な板によって形作られた容量性高周波
遮蔽体はそれだけでは開孔を通り抜ける高周波の洩れ防
止に効果的ではない。上記高周波遮蔽回路と上記容量性
高周波遮蔽体との組み合せが、加熱室から外部へ洩れ出
る全ての高周波を防ぐのに効果的なのである。A capacitive high frequency shield formed by a plate rotatable about a rotating shaft is not by itself effective in preventing leakage of high frequency waves passing through the apertures. The combination of the high frequency shielding circuit and the capacitive high frequency shield is effective in preventing all high frequencies from leaking out from the heating chamber.
上記目的からわかるように、高周波ガイドスリットと高
周波トラップとから成る高周波遮蔽回路を加熱室内側の
送風機の回転軸の開孔に設け、上記関孔に対向して開け
られている高周波トラップを形作る中空の箱を加熱室外
に設けたものが本発明の高周波加熱装置である。As can be seen from the above purpose, a high frequency shielding circuit consisting of a high frequency guide slit and a high frequency trap is provided in the opening of the rotating shaft of the blower inside the heating chamber, and the hollow hole forming the high frequency trap is opened opposite to the above-mentioned barrier hole. The high-frequency heating device of the present invention has a box placed outside the heating chamber.
上記中空の箱は加熱室内部の高周波スリットと高周波波
長の２分の１の長さの遮蔽回路の第２の高周波ガイドよ
りなる。The hollow box consists of a high frequency slit inside the heating chamber and a second high frequency guide of a shielding circuit with a length of one half of the high frequency wavelength.
それによって高周波スリットと高周波トラップのそれぞ
れは高周波波長の４分の１となる。以下本発明の実施例
を図面を用いて説明する。Thereby, each of the radio frequency slit and the radio frequency trap is one quarter of the radio frequency wavelength. Embodiments of the present invention will be described below with reference to the drawings.
第１図、第２図には高周波加熱装置の背面を示す。１は
前面にドァを有する加熱室の背面板である。1 and 2 show the back side of the high frequency heating device. 1 is a back plate of a heating chamber having a door on the front side.
この背面板１はその中央部に関孔２を有し、加熱室の内
部に開孔２をふさぐ金属カバープレート３が設けられて
いる。このカバープレート３は加熱室の背面板１にたと
えば金属繊維をまとめた片によって電気的に接続されて
いる。上言己カバープレート３はその中央に開孔５を有
し、外部モータを有する送風機ホイールのロータ７の回
転軸６は上記開孔５と貫いて回転自在に設けられている
。送風機モータ７は加熱室の外側に設けられ、回転軸６
の端部に取り付けられるものであり、この回転軸６の他
端は加熱室の内部へ突出しねじ９等の手段によりホイー
ル８が固定されている。送風機ホイール８はハブ１１に
取り付けられた放射状のグランドプート１０を有し、グ
ランドプレート１川ま内部円形部分１２と外部円形部分
１３を加熱室の壁を対向させて有している。グランドプ
レート１０の周囲には回転翼１４が設けてある。ホイー
ル８のすぐ前の中央の吸引閥孔と加熱室の換気関孔の近
くには通常の結合板（図示せず）が設けてある。この実
施例では、加熱室の背面板１に設けた関孔５を通って外
部へ洩れ出る高周波発振器の高周波ェネルギガィドを加
熱室内の高周波ガィ日こより防ぐようにしたものである
。This back plate 1 has a hole 2 in its center, and a metal cover plate 3 is provided inside the heating chamber to close the hole 2. This cover plate 3 is electrically connected to the back plate 1 of the heating chamber by, for example, a piece of metal fibers. The cover plate 3 has an aperture 5 in its center, and a rotary shaft 6 of a rotor 7 of a blower wheel having an external motor is rotatably provided through the aperture 5. The blower motor 7 is provided outside the heating chamber and has a rotating shaft 6.
The other end of the rotating shaft 6 protrudes into the heating chamber, and a wheel 8 is fixed thereto by screws 9 or the like. The blower wheel 8 has a radial gland plate 10 attached to a hub 11, and the gland plate 1 has an inner circular portion 12 and an outer circular portion 13 facing the walls of the heating chamber. A rotary blade 14 is provided around the ground plate 10. A conventional coupling plate (not shown) is provided in the vicinity of the central suction port just in front of the wheel 8 and the ventilation port of the heating chamber. In this embodiment, the high-frequency energy of the high-frequency oscillator leaking out through the barrier hole 5 provided in the back plate 1 of the heating chamber is prevented from leaking from the high-frequency energy inside the heating chamber.
背面板１のカバープレート３とグランドプレート１０の
内部円形部分１２との間に高周波ガイドスリット１５が
高周波遮蔽手段として設けられている。A high frequency guide slit 15 is provided between the cover plate 3 of the back plate 1 and the internal circular portion 12 of the ground plate 10 as a high frequency shielding means.
また高周波トラップ１６が送風機ホイール８のハプ１１
に設けた円形溝と鼠方向に平行に開孔５とを蓮通して設
けられている。高周波ガイドスリット１５との高周波ト
ラップ１６の長さ″ ａ″は高周波の波長の４分の１に
等しい。このため全長は高周波の波長の２分の１になる
。関孔５は高周波遮蔽回路内に設けた板に設けられる。
そのため高周波トラップに反射して作られる波は最小と
なる。平らな遮蔽板１７はカバープレート３の外部に取
り付けられる。上記遮蔽板はカバープレート３または加
熱室の背面板１に電気的に接続される。第１図に示す実
施例は容量性高周波遮蔽体がカバープレート３とわずか
の距離をおいて設けられ回転軸６に固定された金属板１
８を作るカバープレート３の加熱室の背面板１の外部に
設けられている。Also, the high frequency trap 16 is connected to the hub 11 of the blower wheel 8.
It is provided by passing through the circular groove provided in the hole and the opening 5 parallel to the mouse direction. The length "a" of the radio frequency trap 16 with the radio frequency guide slit 15 is equal to one quarter of the wavelength of the radio frequency. Therefore, the total length becomes one half of the wavelength of the high frequency. The checkpoint 5 is provided on a plate provided within the high frequency shielding circuit.
Therefore, the waves created by reflection from the high frequency trap are minimized. A flat shielding plate 17 is attached to the outside of the cover plate 3. The shielding plate is electrically connected to the cover plate 3 or the back plate 1 of the heating chamber. In the embodiment shown in FIG. 1, a metal plate 1 is provided with a capacitive high frequency shield at a short distance from a cover plate 3 and is fixed to a rotating shaft 6.
8 is provided outside the back plate 1 of the heating chamber of the cover plate 3.
そして放射長さ″ ａ″は高周波の波長の４分の１に等
しい。板１８とカバープレートとの距離が１．５凧であ
ると適当である。第２図に示す実施例は、第１図の板１
８に代えて中空体１９を取り付けた状態を示すものであ
り、開孔５の点２０を叢適している。And the radiation length "a" is equal to one quarter of the wavelength of the radio frequency. A suitable distance between the plate 18 and the cover plate is 1.5 distances. The embodiment shown in FIG.
This figure shows a state in which a hollow body 19 is attached in place of the hole 8, and the point 20 of the opening 5 is suitable.
中空体１９は放射長さ″ ａ″は高周波の波長の４分の
１に等しく、高周波遮蔽体である高周波ガイドスリット
１５と共に高周波トラップが設けられている。The hollow body 19 has a radiation length "a" equal to one quarter of the wavelength of the radio frequency, and is provided with a radio frequency trap as well as a radio frequency guide slit 15 which is a radio frequency shield.
金属製中空体１９はカバープレート３の近傍に設けられ
、第１図で示す容量性高周波遮蔽体と類似のものが設け
てある。以上のように本発明によれば高周波加熱装置に
おいて、加熱室の翼を貫通して送風機の回転軸を取り付
けても、高周波遮蔽手段が設けてあるために高周波が外
部へ洩れ出ることはなく安全である。A hollow metal body 19 is provided in the vicinity of the cover plate 3 and is similar to the capacitive high frequency shield shown in FIG. As described above, according to the present invention, in the high-frequency heating device, even if the rotary shaft of the blower is attached through the blades of the heating chamber, the high-frequency waves will not leak to the outside and it will be safe because the high-frequency shielding means is provided. It is.
第１図は本発明の一実施例における高周波加熱装置の背
断面図、第２図は同他の実施例における高周波加熱装置
の背断面図である。
１．．．．．．背面板、２・・・・・・関孔、３・・・
・・・カバープレート、５・・・・・・関孔、６・・・
・・・回転軸、７……モー夕、８……ホイール、１０…
…グランドプレート、１４・・・・・・回転翼、１５・
・・・・・高周波ガイドスリット、１６・・・・・・高
周波トラツプ。
第１図
第２図FIG. 1 is a back cross-sectional view of a high-frequency heating device according to an embodiment of the present invention, and FIG. 2 is a back cross-sectional view of a high-frequency heating device according to another embodiment of the present invention. 1. ．． ．． ．． ．． ．． Back plate, 2... Sekihole, 3...
...Cover plate, 5...Sekihole, 6...
...Rotation axis, 7...Motor, 8...Wheel, 10...
...Ground plate, 14...Rotor blade, 15.
...High frequency guide slit, 16...High frequency trap. Figure 1 Figure 2
Claims (1)
、上記加熱室の外部に位置する上記回転軸の端部に設け
たモータと、上記加熱室の内部に位置する上記回転軸の
端部に設けた回転翼と、上記回転翼を上記回転軸に取り
つけるハブの中に形成した溝よりなる高周波トラツプと
、上記加熱室の外壁との間でわずかな隙間を有して上記
回転軸に取り付けられる金属体よりなる容量性高周波遮
蔽体とを備えたことを特徴とする高周波加熱装置。 ２ 上記容量性高周波遮蔽体は金属円板であることを特
徴とする特許請求の範囲第１項記載の高周波加熱装置。 ３ 上記容量性高周波遮蔽体は中空状の箱体であること
を特徴とする特許請求の範囲第１項記載の高周波加熱装
置。４ 中空状の箱体の外周を遮蔽体で覆つたことを特
徴とする特許請求の範囲第３項記載の高周波加熱装置。 ５ 回転翼と加熱室の内壁とで形成される隙間と回転翼
を回転軸に取り付けるハブの内に形成した円形の溝とで
高周波遮蔽体を形成したことを特徴とする特許請求の範
囲第１項記載の高周波加熱装置。[Scope of Claims] 1. A rotating shaft rotatably provided through the wall of the heating chamber, a motor provided at an end of the rotating shaft located outside the heating chamber, and a motor provided inside the heating chamber. A small gap is created between a rotor blade provided at the end of the rotary shaft, a high frequency trap consisting of a groove formed in a hub that attaches the rotor blade to the rotary shaft, and the outer wall of the heating chamber. and a capacitive high frequency shield made of a metal body attached to the rotating shaft. 2. The high frequency heating device according to claim 1, wherein the capacitive high frequency shield is a metal disk. 3. The high frequency heating device according to claim 1, wherein the capacitive high frequency shield is a hollow box. 4. The high-frequency heating device according to claim 3, wherein the outer periphery of the hollow box body is covered with a shielding body. 5. Claim 1, characterized in that a high-frequency shield is formed by the gap formed between the rotor blade and the inner wall of the heating chamber and the circular groove formed in the hub that attaches the rotor blade to the rotating shaft. The high-frequency heating device described in Section 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782834368 DE2834368A1 (en) | 1978-08-04 | 1978-08-04 | Microwave oven incorporating circulation fan - has annular microwave trap around hub of fan shaft |
| DE2834368.2 | 1978-08-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5549887A JPS5549887A (en) | 1980-04-10 |
| JPS6025876B2 true JPS6025876B2 (en) | 1985-06-20 |
Family
ID=6046305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9894579A Expired JPS6025876B2 (en) | 1978-08-04 | 1979-08-01 | High frequency heating device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS6025876B2 (en) |
| DE (1) | DE2834368A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3027839C2 (en) * | 1980-07-23 | 1982-07-29 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Microwave oven |
| DE3104627A1 (en) * | 1980-07-23 | 1982-11-11 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Microwave heater |
| JPS5815993U (en) * | 1981-07-23 | 1983-01-31 | 三洋電機株式会社 | High frequency heating device |
| DE3345746C3 (en) * | 1983-12-17 | 1995-04-06 | Licentia Gmbh | Baking u. Roasting oven with a forced air fan |
| DE3810684A1 (en) * | 1988-03-29 | 1989-10-19 | Bosch Siemens Hausgeraete | Blower for a forced-air cooker |
| DE4105300C2 (en) * | 1991-02-20 | 1997-02-13 | Bosch Siemens Hausgeraete | Fan for a convection oven |
| DE4135819A1 (en) * | 1991-10-30 | 1993-05-06 | Bosch-Siemens Hausgeraete Gmbh, 8000 Muenchen, De | Microwave trap for microwave oven circulation fan drive shaft - uses bush and plate cover fitting around hollow tube acting as drive shaft, with defined microwave length and width |
| JPH07112185A (en) * | 1993-08-26 | 1995-05-02 | Nitto Denko Corp | Waste water treating device and washing method therefor |
| DE102005002951A1 (en) * | 2005-01-21 | 2006-07-27 | BSH Bosch und Siemens Hausgeräte GmbH | Household appliance used as an oven comprises a fixing part for forming a non-positive connection with a motor shaft in the axial direction |
| EP2247160B1 (en) * | 2009-05-02 | 2012-11-28 | Electrolux Home Products Corporation N.V. | A microwave sealing device of an opening for a rotating shaft |
| BE1030013B1 (en) | 2021-12-09 | 2023-07-10 | Miele & Cie | Microwave device with microwave trap |
-
1978
- 1978-08-04 DE DE19782834368 patent/DE2834368A1/en active Granted
-
1979
- 1979-08-01 JP JP9894579A patent/JPS6025876B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5549887A (en) | 1980-04-10 |
| DE2834368A1 (en) | 1980-02-21 |
| DE2834368C2 (en) | 1987-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6025876B2 (en) | High frequency heating device | |
| CA1263452A (en) | Rotating slot antenna arrangement for microwave oven | |
| JPH0467316B2 (en) | ||
| JPS6012757B2 (en) | High frequency heating device | |
| JPS6047716B2 (en) | High frequency heating device | |
| FR2280810A1 (en) | Fan with axial input and radial output - with impeller suitable to replace drum wheel of same outer dimensions, but with higher capacity | |
| JPH081599Y2 (en) | microwave | |
| JPS5943675Y2 (en) | High frequency heating device | |
| US4327267A (en) | High frequency energy supply in a high frequency heating appliance | |
| JPH0115110Y2 (en) | ||
| JPS5918628Y2 (en) | High frequency shielding mechanism of microwave oven | |
| JPS589121Y2 (en) | composite cooker | |
| JP2983752B2 (en) | Combined heat treatment equipment | |
| JPH01204387A (en) | High frequency heating device | |
| JPS6219088Y2 (en) | ||
| JPS62311Y2 (en) | ||
| JPH0218558Y2 (en) | ||
| JPS6115588Y2 (en) | ||
| JPS5712113A (en) | Bearing device for blocking the leakage of electromagnetic wave in microwave processing room | |
| SU1136846A1 (en) | Rotary siren | |
| JPS54101541A (en) | Cold storage | |
| JPS63140641A (en) | Silencer for rotary electric machine | |
| JPS5532942A (en) | Centrifugal fan and its manufacture | |
| JPS62202489A (en) | Antenna rotating apparatus in microwave oven | |
| JPS5941279B2 (en) | microwave oven |