JPS6226956Y2 - - Google Patents
Info
- Publication number
- JPS6226956Y2 JPS6226956Y2 JP1981009978U JP997881U JPS6226956Y2 JP S6226956 Y2 JPS6226956 Y2 JP S6226956Y2 JP 1981009978 U JP1981009978 U JP 1981009978U JP 997881 U JP997881 U JP 997881U JP S6226956 Y2 JPS6226956 Y2 JP S6226956Y2
- Authority
- JP
- Japan
- Prior art keywords
- operation panel
- machine room
- circuit board
- printed circuit
- frequency
- 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
- 238000010411 cooking Methods 0.000 claims description 18
- 238000005485 electric heating Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Control Of High-Frequency Heating Circuits (AREA)
- Constitution Of High-Frequency Heating (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Description
【考案の詳細な説明】
本考案は電熱装置などの加熱手段を備えた高周
波加熱器の操作パネル部の冷却構造に関するもの
である。[Detailed Description of the Invention] The present invention relates to a cooling structure for an operation panel of a high-frequency heater equipped with heating means such as an electric heating device.
近年、家電製品への電子制御回路の応用が進む
なかで、電熱装置などの加熱手段を備えた高周波
加熱器（以下高周波加熱器と略す）にも応用が開
始されている。前記高周波加熱器は電熱装置使用
時調理庫内が高温となるため本体内部の至る部分
の雰囲気温度が上昇する。一般に電子回路に使用
する半導体素子の使用周囲温度の限度値は75℃で
ある。従つて前記高周波加熱器に電子回路を応用
するには、電子回路を構成する部品の取り付け部
（以下プリント回路基板という）は前述のように
75℃以下にしなければならない。一般にプリント
回路基板は操作パネルに取り付けられている。そ
こで従来は、前記温度限度値以下に冷却するため
に、高周波による調理時マグネトロン冷却用のフ
アンを電熱装置使用時にも使用し、前記プリント
回路基板の冷却を行つていた。しかし、この方法
では新たな二つの問題が発生する。第一は、高周
波加熱時はドアの調理庫内透視窓のガラスの曇り
を抑え、また調理庫内の換気を行うためにマグネ
トロンの冷却風を調理庫内に導入する必要があ
る。ところが電熱装置使用時は調理庫内を高温に
しなければならないため冷却風を庫内に導入する
ことができないことから、高周波加熱時と電熱装
置使用時のそれぞれの加熱手段により冷却風の排
気経路の切り換えが必要となる。そこで従来はマ
グネトロンの冷却風を調理庫内に導入するダクト
内にシヤツターを設けこれをサーボモータやソレ
ノイドにより駆動し排気経路の切換えを行つてい
た。第２の問題点は、操作パネル部の冷却がなさ
れると同時に調理庫外部からの冷却もされるため
電熱装置使用時の効率を良くするために調理庫全
周に断熱材を張り付けるなど断熱を良くしなけれ
ばならない。このように電熱装置使用時の操作パ
ネルの冷却を冷却フアンに頼ることは非常に複雑
で高価な構成となる欠点がある。 In recent years, as the application of electronic control circuits to home appliances has progressed, application has also begun to high-frequency heaters (hereinafter abbreviated as high-frequency heaters) equipped with heating means such as electric heating devices. When the high-frequency heater is used as an electric heating device, the temperature inside the cooking chamber becomes high, so that the ambient temperature throughout the interior of the main body increases. Generally, the upper limit of the operating ambient temperature for semiconductor elements used in electronic circuits is 75°C. Therefore, in order to apply an electronic circuit to the above-mentioned high-frequency heater, the mounting part for the parts constituting the electronic circuit (hereinafter referred to as a printed circuit board) must be as described above.
Must be below 75℃. Generally, a printed circuit board is attached to an operation panel. Conventionally, in order to cool the printed circuit board below the temperature limit, a magnetron cooling fan using high frequency waves during cooking is also used when the electric heating device is used to cool the printed circuit board. However, two new problems arise with this method. First, during high-frequency heating, it is necessary to introduce cooling air from a magnetron into the cooking chamber in order to prevent fogging of the glass in the door's transparent window inside the cooking chamber and to ventilate the interior of the cooking chamber. However, when using an electric heating device, the inside of the cooking chamber must be heated to a high temperature, so cooling air cannot be introduced into the cooking chamber. Switching is required. Conventionally, a shutter was installed in the duct that introduced the magnetron's cooling air into the cooking chamber, and the shutter was driven by a servo motor or solenoid to switch the exhaust path. The second problem is that when the operation panel is cooled, it is also cooled from outside the cooking chamber, so in order to improve efficiency when using the electric heating device, insulation material is pasted around the entire circumference of the cooking chamber. must be improved. As described above, relying on a cooling fan to cool the operation panel when the electric heating device is in use has the disadvantage of resulting in a very complicated and expensive configuration.
そこで本考案は上記欠点を解決するためになさ
れたもので、簡単な構成により安価で信頼性の高
い高周波加熱器を提供することを目的とする。 Therefore, the present invention has been made to solve the above-mentioned drawbacks, and an object of the present invention is to provide a high-frequency heater with a simple structure, low cost, and high reliability.
本考案の実施例を図面に基づいて説明する。第
１図および第２図において調理庫１の右側方に高
圧トランス２，マグネトロン３等の発振装置を収
納している機械室が設けられており、機械室前面
に操作パネル４が取り付けられている。操作パネ
ル４にはプリント回路基板５が取り付けられその
上部に排気孔６が設けられている。第２図の排気
孔の縦断図を示す第３図において、排気孔６はガ
ード７が操作パネルと一体に形成され覆われてい
る。 Embodiments of the present invention will be described based on the drawings. In Figures 1 and 2, a machine room housing oscillation devices such as a high voltage transformer 2 and a magnetron 3 is provided on the right side of the cooking cabinet 1, and an operation panel 4 is attached to the front of the machine room. . A printed circuit board 5 is attached to the operation panel 4, and an exhaust hole 6 is provided in the upper part of the printed circuit board 5. In FIG. 3 showing a longitudinal cross-sectional view of the exhaust hole in FIG. 2, the exhaust hole 6 is covered with a guard 7 formed integrally with the operation panel.
外気は底板８に設けられた吸気孔９から導入さ
れプリント回路基板の表面を流れ冷却しながら排
気孔６から排出される。このような構成とするこ
とにより、操作パネル付近の空気の流れが良くな
り熱気が滞留することなく常に外気が導入されプ
リント回路基板が効果的に冷却される。また、調
理中調理庫内で発生する蒸気が機械室内に漏れて
くるが排気孔６を設けることにより蒸気を速やか
に外部に排出することができ、操作パネル４およ
びプリント回路基板に付着する蒸気を小なくする
ことが可能となり信頼性を向上することができ
る。一方、電子制御回路を応用した高周波加熱器
では調理時間の終了などを報知するために圧電ブ
ザーなどが使用されることが多い。そこで、本考
案のように排気孔６を設けることによりブザーの
音をより大きな音で外部に報知することができ
る。また、ガード７が設けられているため、操作
パネル４に誤つて水をかけられたり手入れのため
に水拭きされた場合などにおいても内部に侵水す
ることがなく、プリント回路基板の誤動作に対し
ても信頼性が向上されている。 Outside air is introduced through the intake hole 9 provided in the bottom plate 8, flows over the surface of the printed circuit board, and is discharged through the exhaust hole 6 while cooling the surface of the printed circuit board. With this configuration, the flow of air near the operation panel is improved, and outside air is constantly introduced without stagnation of hot air, thereby effectively cooling the printed circuit board. Additionally, the steam generated in the cooking chamber leaks into the machine room during cooking, but by providing the exhaust hole 6, the steam can be quickly discharged to the outside, and the steam that adheres to the operation panel 4 and the printed circuit board can be prevented. It is possible to reduce the size and improve reliability. On the other hand, in high-frequency heaters that utilize electronic control circuits, piezoelectric buzzers and the like are often used to notify when the cooking time is over. Therefore, by providing the exhaust hole 6 as in the present invention, it is possible to notify the outside of the buzzer with a louder sound. In addition, since the guard 7 is provided, even if the operation panel 4 is accidentally splashed with water or wiped with water for cleaning, water will not enter the interior and prevent malfunction of the printed circuit board. Even reliability has been improved.
第４図に他の実施例を示す。操作パネル４の下
端面に吸気孔１０が設けられている。このような
構成とすることにより吸気をプリント回路基板５
の真下から行うことが可能となりプリント回路基
板５の冷却がより効果的になされる。 FIG. 4 shows another embodiment. An intake hole 10 is provided on the lower end surface of the operation panel 4. With this configuration, the intake air is connected to the printed circuit board 5.
This allows the printed circuit board 5 to be cooled more effectively.
第５図および第６図に他の実施例を示す。操作
パネル４は機械室側から、上左右の三方のみを箱
曲げ加工された金属板１１により覆われている。
このような構成とすることにより、操作パネル４
と金属板１１の間にダクトが形成され、調理庫１
の熱により加熱された空気は浮力により排気孔６
から良く排気され上記ダクト内の通風が良くなり
底板および操作パネル下端面に設けた吸気孔から
外気を強力に吸入することが可能となり、煙突と
同様の効果が得られる。これにより一層効果的に
プリント回路基板の冷却が可能となる。またこの
ように金属板１１により操作パネル４を覆うこと
により、プリント回路基板５は調理庫１およびマ
グネトロン３の取り付け部から漏れる電波からプ
リント回路基板をシールドすることが可能とな
り、機器の誤動作を防ぐことができ、より信頼性
を向上することができる。 Other embodiments are shown in FIGS. 5 and 6. The operation panel 4 is covered from the machine room side only on three sides, top and left, by a box-bent metal plate 11.
With this configuration, the operation panel 4
A duct is formed between the cooking chamber 1 and the metal plate 11.
The air heated by the heat of the exhaust hole 6 due to buoyancy
The duct is well ventilated and the ventilation inside the duct is improved, and outside air can be strongly sucked in through the intake holes provided on the bottom plate and the lower end surface of the operation panel, providing the same effect as a chimney. This allows for more effective cooling of the printed circuit board. Furthermore, by covering the operation panel 4 with the metal plate 11 in this manner, the printed circuit board 5 can be shielded from radio waves leaking from the attachment portions of the cooking cabinet 1 and the magnetron 3, thereby preventing malfunction of the equipment. This can further improve reliability.
この考案は以上説明したように簡単な構成とす
ることにより数多くの効果が期待できるものであ
る。 As explained above, this invention can be expected to have many effects due to its simple configuration.
第１図は本考案の一実施例における高周波加熱
器の外観を示す前方斜視図、第２図は同内部構造
の後方斜視図、第３図は排気孔の縦断面図、第４
図，第５図は本考案の他の実施例の後方斜視図、
第６図は第５図のＡ−Ａ線断面図である。
１……調理庫、２……高圧トランス、４……操
作パネル、５……プリント回路基板、６……排気
孔、７……ガード、９……吸気孔。
Fig. 1 is a front perspective view showing the external appearance of a high-frequency heater according to an embodiment of the present invention, Fig. 2 is a rear perspective view of the internal structure, Fig. 3 is a longitudinal sectional view of the exhaust hole, and Fig. 4 is a longitudinal sectional view of the exhaust hole.
5 is a rear perspective view of another embodiment of the present invention,
FIG. 6 is a sectional view taken along line A--A in FIG. 5. 1... Cooking cabinet, 2... High voltage transformer, 4... Operation panel, 5... Printed circuit board, 6... Exhaust hole, 7... Guard, 9... Intake hole.
Claims (1)
置し、この機械室の前面には操作パネルを設
け、電熱装置などの加熱手段を備えた高周波加
熱器において、前記操作パネルの上部に前記機
械室内の空気を排出する排出孔を設けたことを
特徴とする高周波加熱器。 (2) 前記操作パネルの下部に外気を機械室内に導
入する吸気孔を設けたことを特徴とする実用新
案登録請求の範囲第１項記載の高周波加熱器。 (3) 操作パネルの一部を機械室内部において金属
板により覆い操作パネルと金属板によりダクト
を形成し機械室内の空気をこのダクトを通して
排気孔に導き排気を行なうことを特徴とする実
用新案登録請求の範囲第１項または第２項記載
の高周波加熱器。[Scope of Claim for Utility Model Registration] (1) A machine room housing an oscillation device is placed on the side of the cooking cabinet, an operation panel is provided in front of this machine room, and high-frequency heating is provided with a heating means such as an electric heating device. 1. A high-frequency heater, characterized in that a discharge hole for discharging air inside the machine chamber is provided in the upper part of the operation panel. (2) The high-frequency heater according to claim 1, which is a registered utility model, characterized in that an intake hole for introducing outside air into the machine room is provided at the lower part of the operation panel. (3) Registration of a utility model characterized in that a part of the operation panel is covered with a metal plate inside the machine room, and the operation panel and the metal plate form a duct, and the air inside the machine room is guided to the exhaust hole through the duct and exhausted. A high frequency heater according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981009978U JPS6226956Y2 (en) | 1981-01-26 | 1981-01-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981009978U JPS6226956Y2 (en) | 1981-01-26 | 1981-01-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57126198U JPS57126198U (en) | 1982-08-06 |
| JPS6226956Y2 true JPS6226956Y2 (en) | 1987-07-10 |
Family
ID=29808085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981009978U Expired JPS6226956Y2 (en) | 1981-01-26 | 1981-01-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6226956Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59126485U (en) * | 1983-02-15 | 1984-08-25 | シャープ株式会社 | wall mounted microwave oven |
| JP5037235B2 (en) * | 2006-11-16 | 2012-09-26 | 株式会社オートネットワーク技術研究所 | Electrical junction box |
| US8654528B2 (en) | 2006-11-16 | 2014-02-18 | Autonetworks Technologies, Ltd. | Electric connection box |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5414039A (en) * | 1977-07-05 | 1979-02-01 | Sharp Corp | Electric oven |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53127347U (en) * | 1977-03-17 | 1978-10-09 |
-
1981
- 1981-01-26 JP JP1981009978U patent/JPS6226956Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5414039A (en) * | 1977-07-05 | 1979-02-01 | Sharp Corp | Electric oven |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57126198U (en) | 1982-08-06 |
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