JPS58836B2 - induction heating cooker - Google Patents
induction heating cookerInfo
- Publication number
- JPS58836B2 JPS58836B2 JP11733978A JP11733978A JPS58836B2 JP S58836 B2 JPS58836 B2 JP S58836B2 JP 11733978 A JP11733978 A JP 11733978A JP 11733978 A JP11733978 A JP 11733978A JP S58836 B2 JPS58836 B2 JP S58836B2
- Authority
- JP
- Japan
- Prior art keywords
- heating coil
- pot
- insulating material
- heat insulating
- temperature
- 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
Description
【発明の詳細な説明】
本発明は誘導加熱調理器における加熱コイルの熱的保護
に関するものであり、加熱コイルの冷却にファンを用い
ず、断熱材により行うことを目的とするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to thermal protection of a heating coil in an induction heating cooker, and an object of the present invention is to cool the heating coil using a heat insulating material without using a fan.
従来、誘導加熱調理器の加熱コイルは、トッププレート
と加熱コイルとの間に空隙を設けて、冷却ファンにより
加熱コイルを強制空冷する構成が採用されていた。Conventionally, the heating coil of an induction heating cooker has a configuration in which a gap is provided between the top plate and the heating coil, and the heating coil is forcedly cooled by a cooling fan.
これは、加熱コイルが調理器全体の加熱効率を高くする
ためリッツ線で構成され、被加熱物である鍋が空調時な
どに、リッツ線の絶縁被覆の耐熱許容値を満足させるた
めの手段であった。This is because the heating coil is made of litz wire to increase the heating efficiency of the entire cooker, and it is a means to ensure that the pot being heated satisfies the heat resistance tolerance of the insulation coating of the litz wire during air conditioning, etc. there were.
しかしこのように冷却ファンによる強制空冷を行うこと
は、調理器全体の構成やコストに大きな限定条件となり
、機器の小型化などの障害とないでいた。However, performing forced air cooling using a cooling fan in this manner imposes significant limitations on the overall structure and cost of the cooking device, and has been an obstacle to downsizing the device.
本発明は上記のような欠点を解消するためのもので、ト
ッププレートと加熱コイルとの間に断熱材を配置し、加
熱コイルと断熱材との間に温度過昇防止装置を配置する
ことにより加熱コイルを強制空冷せずに、リッツ線で構
成された加熱コイルの耐熱許容値を満足させる構成を実
現したものである。The present invention is intended to solve the above-mentioned drawbacks, and by disposing a heat insulating material between the top plate and the heating coil, and disposing an overtemperature rise prevention device between the heating coil and the heat insulating material. This achieves a configuration that satisfies the heat resistance tolerance of a heating coil made of litz wire without forced air cooling of the heating coil.
以下、本発明の一実施例を図面に基づいて説明する。Hereinafter, one embodiment of the present invention will be described based on the drawings.
第1図において、コイル1は支持基板2に含浸ワニスで
接着されている。In FIG. 1, a coil 1 is bonded to a support substrate 2 with impregnated varnish.
加熱コイル1は所定の外形を得るために線間絶縁物(図
示せず)を使用している。The heating coil 1 uses interline insulation (not shown) to obtain a predetermined outer shape.
フェライトコアー3は加熱コイル1からの磁束が下部に
配置された高周波電源部(図示せず)に影響を与えない
ように、加熱コイル1中央部より放射状に配置され、支
持基板2に接置されている。The ferrite cores 3 are arranged radially from the center of the heating coil 1 and placed on the support substrate 2 so that the magnetic flux from the heating coil 1 does not affect the high frequency power supply section (not shown) arranged below. ing.
トッププレート4は鍋を載置できるようになっている。The top plate 4 is designed so that a pot can be placed thereon.
柔軟性をもつ断熱材5はトッププレート4と加熱コイル
1に挾持された状態で配置されている。A flexible heat insulating material 5 is placed between the top plate 4 and the heating coil 1.
アルミニウムのプレート6は熱伝導板として使用され、
端部に感温スイッチ7が配置されでいる。The aluminum plate 6 is used as a heat conduction plate,
A temperature sensitive switch 7 is arranged at the end.
8はアルミニウムプレート6と加熱コイル1の絶縁のた
めの絶縁紙、9は鍋スイッチ用磁石である。8 is an insulating paper for insulating the aluminum plate 6 and the heating coil 1, and 9 is a pot switch magnet.
この構成において、基板2の下部には高周波電源部が配
置され、冷却ファンが高周波電源部を冷却しているとす
ると、加熱コイル1の温度は、加熱コイル1の自己発熱
量、トッププレート4上の空調時などの鍋からの輻射及
び伝導熱、基板2下部からの放熱の3要因で決定される
と考えられる。In this configuration, assuming that a high frequency power supply section is disposed at the bottom of the board 2 and a cooling fan is cooling the high frequency power supply section, the temperature of the heating coil 1 is determined by the self-heating amount of the heating coil 1, the amount of heat generated by the top plate 4, and the temperature of the heating coil 1. It is thought that this is determined by three factors: radiant and conductive heat from the pan during air conditioning, and heat dissipation from the bottom of the board 2.
従来は、この3要因のうち、鍋からの輻射・伝導熱と、
加熱コイル1の自己発熱の2要因を分離せずに、空調時
の異常時などにおいても単に強制冷却をするだけであっ
た。Conventionally, among these three factors, radiant and conductive heat from the pot,
Without separating the two causes of self-heating of the heating coil 1, forced cooling was simply performed even in the event of an abnormality during air conditioning.
本発明の構成では、断熱材5により、トッププレート4
上の鍋からの輻射・伝導熱を低減し、正常時には加熱コ
イル1の自己発熱は、基板2の下部より冷却し、空調な
どの異常時には、温度過昇防止装置にて保護するという
画期的構想により、2つの発熱源を分離することが可能
となり、今まで複雑な冷却構成を必要としいてた加熱コ
イル部の構成を大いに簡素化することに成功した。In the configuration of the present invention, the top plate 4 is
This innovative design reduces radiation and conduction heat from the upper pot, cools the self-generated heat of the heating coil 1 from the lower part of the board 2 under normal conditions, and protects it with an overtemperature rise prevention device in the event of an abnormality such as air conditioning. The concept made it possible to separate the two heat generation sources, and succeeded in greatly simplifying the configuration of the heating coil section, which until now required a complicated cooling configuration.
この構成は又、高周波電源部への鍋からの輻射、伝導熱
を低減する意味からも大いに有効であると言える。This configuration can also be said to be very effective in reducing radiation and conduction heat from the pot to the high frequency power supply section.
更に、従来フェライトコアー3の加熱コイル1からの距
離が、フェライトコアー3のキューリ一点の関係から、
あまり加熱コイル1に近づけることが出来なかったが、
本発明の構成においては、直接、基板2に接着すること
が可能となっている。Furthermore, since the distance of the conventional ferrite core 3 from the heating coil 1 is one curie point of the ferrite core 3,
Although I could not get it very close to heating coil 1,
In the configuration of the present invention, it is possible to bond directly to the substrate 2.
更に、温度過昇防止装置を、断熱材5と加熱コイル1の
間に配置したことは、第2図すに示したように、加熱コ
イル1中央部には性能土鍋スイッチ用磁石9を配置せざ
るを得ない構成上、鍋が加熱コイル1との相対位置をず
らした場合の温度過昇保護の性能上、鍋温度の影響を加
熱コイル上に低減・均一化するという意味で大いに効果
がある。Furthermore, the temperature overrise prevention device is placed between the heat insulating material 5 and the heating coil 1, as shown in FIG. Due to the unavoidable configuration, it is highly effective in reducing and equalizing the influence of the pan temperature on the heating coil in terms of the performance of over-temperature rise protection when the relative position of the pan is shifted with respect to the heating coil 1. .
ここで第2図の説明をすると、1は加熱コイル位置、6
はアルミニウムプレート位置、10は高周波電源部の冷
却用ファンの位置で、bの斜線部は鍋底位置である。To explain Fig. 2 here, 1 is the heating coil position, 6
10 is the position of the aluminum plate, 10 is the position of the cooling fan of the high frequency power supply section, and the shaded part b is the position of the bottom of the pot.
なお、断熱材は理論的には熱を伝えないことになってい
るが、現実には熱伝導がある。In theory, insulation materials do not conduct heat, but in reality they do.
又、空調は鍋底温度が平均して上昇するのでなく鍋底の
ソリなどにより局部的に350℃〜450℃の高温にな
る場合があり、この場合断熱材がないと、セラミック等
のトッププレートを赤外線が透過して加熱コイル表面を
局部的に300℃以上に加熱する。In addition, with air conditioning, the temperature at the bottom of the pot does not rise on average, but may locally reach a high temperature of 350 to 450 degrees Celsius due to warping of the bottom of the pot, and in this case, if there is no insulation, the top plate made of ceramic etc. permeates and locally heats the surface of the heating coil to 300°C or higher.
このような状態では加熱コイル全面にわたる過熱保護が
必要である。In such a state, overheat protection over the entire surface of the heating coil is required.
本発明は上記のような点をカバーするために加熱コイル
とトッププレートの間に断熱材を挿入し、上記したよう
な輻射熱をカットし、伝導熱によって上昇する断熱材の
平均温度を検知することで、加熱コイルの保護を実現し
たものである。In order to cover the above points, the present invention inserts a heat insulating material between the heating coil and the top plate, cuts the radiant heat as described above, and detects the average temperature of the heat insulating material, which increases due to conductive heat. This protects the heating coil.
なお定常発振時には加熱コイルは140〜150℃で、
空調時には200℃近辺となり、誤動作のないことを確
認した。During steady oscillation, the heating coil is at 140 to 150°C.
When the air conditioning was on, the temperature reached around 200°C, confirming that there were no malfunctions.
以上説明したように、本発明は、従来、調理器としての
機器のコンパクト化など構成上大きなネックとなってい
た加熱コイル部の熱的構成を、断熱材5と基板2の形状
および厚みのマツチングにより容易に実現したもので、
更に温度過昇防止装置を付加することにより、空調時な
どの異常状態においても加熱コイル1の耐熱許容値を充
分満足し得る構成となっている。As explained above, the present invention solves the thermal configuration of the heating coil section, which has conventionally been a major bottleneck in terms of the configuration, such as making the device compact as a cooking device, by matching the shape and thickness of the heat insulating material 5 and the substrate 2. This was easily achieved by
Furthermore, by adding a temperature overrise prevention device, the configuration is such that the heat resistance tolerance of the heating coil 1 can be fully satisfied even under abnormal conditions such as during air conditioning.
第1図は本発明の一実施例における誘導加熱調理器の要
部側断面図、第2図a、bは同平面図である。
1・・・・・・加熱コイル、2・・・・・・支持基板、
4・・・・・・トッププレート、5・・・・・・断熱板
、6・・・・・・アルミニウラのプレート、7・・・・
・・感温スイッチ、8・・・・・・絶縁紙。FIG. 1 is a sectional side view of a main part of an induction heating cooker according to an embodiment of the present invention, and FIGS. 2a and 2b are plan views thereof. 1... Heating coil, 2... Support substrate,
4...Top plate, 5...Insulation board, 6...Aluminum backing plate, 7...
...Thermosensitive switch, 8...Insulating paper.
Claims (1)
下方に配置され前記鍋を誘導加熱する加熱コイルと、前
記加熱コイルを支持する支持基板払前記トッププレート
と前記加熱コイルとの間に配置され前記鍋からの輻射熱
を遮断する断熱材と前記加熱コイルと前記断熱材の間に
配置し、断熱材の平均化された温度を検知する温度過昇
防止装置とを備えた誘導加熱調理器。 2前記部度過昇防止装置は、高誘電性金属製の熱伝導板
と、感温スイッチとより構成された特許請求の範囲第1
項記載の誘導加熱調理器。 3前記誘導加熱コイル部に高周波電流を供給する高周波
電源部と、前記高周波電源部を強制冷却する冷却ファン
と、鍋検知装置とを更に有し、前記温度過昇防止装置を
、前記冷却ファンと反対側に配置した特許請求の範囲第
1項記載の誘導加熱調理器。[Scope of Claims] A top plate on which a pot is placed; a heating coil disposed below the top plate for inductively heating the pot; a support substrate supporting the heating coil; the top plate and the heating coil; An induction device comprising: a heat insulating material disposed between the heating coil and the heat insulating material to block radiant heat from the pot; and a temperature overrise prevention device disposed between the heating coil and the heat insulating material to detect an averaged temperature of the heat insulating material. Heating cooker. 2. The above-mentioned excessive temperature rise prevention device is comprised of a heat conductive plate made of a highly dielectric metal and a temperature-sensitive switch.
Induction heating cooker as described in section. 3. The induction heating coil section further includes a high-frequency power supply section that supplies a high-frequency current to the induction heating coil section, a cooling fan that forcibly cools the high-frequency power supply section, and a pot detection device, and the overtemperature rise prevention device is combined with the cooling fan. The induction heating cooker according to claim 1, which is arranged on the opposite side.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11733978A JPS58836B2 (en) | 1978-09-21 | 1978-09-21 | induction heating cooker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11733978A JPS58836B2 (en) | 1978-09-21 | 1978-09-21 | induction heating cooker |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5543779A JPS5543779A (en) | 1980-03-27 |
JPS58836B2 true JPS58836B2 (en) | 1983-01-08 |
Family
ID=14709254
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11733978A Expired JPS58836B2 (en) | 1978-09-21 | 1978-09-21 | induction heating cooker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58836B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1178865A (en) * | 1981-04-10 | 1984-12-04 | William B. Mayfield | Medication infusion device |
US4900305A (en) * | 1988-06-27 | 1990-02-13 | Queen's University At Kingston | Ambulatory infusion pump |
US4991743A (en) * | 1989-11-06 | 1991-02-12 | Cobe Laboratories, Inc. | Controlled flow accumulator |
-
1978
- 1978-09-21 JP JP11733978A patent/JPS58836B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5543779A (en) | 1980-03-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4350875A (en) | Radiant heating elements for smooth top cookers | |
US7057144B2 (en) | Induction heating device | |
US5221829A (en) | Domestic cooking apparatus | |
JP3938197B2 (en) | Induction heating device | |
US20130270260A1 (en) | Induction heating coil and induction heating device | |
US7057139B2 (en) | Electric heating assembly | |
JPS58836B2 (en) | induction heating cooker | |
US1947078A (en) | Motor thermal relay | |
GB2316848A (en) | Improving lateral conduction in electric heating elements | |
JP2009123603A (en) | Induction heating cooker | |
JP3008048B2 (en) | Induction heating cooker | |
JP2734572B2 (en) | Cooking device | |
JP2004146149A (en) | Induction heating device | |
JPS59114785A (en) | Induction heating cooking device | |
JP2925839B2 (en) | Electromagnetic cooker | |
JPS583268Y2 (en) | induction heating cooker | |
CN212537938U (en) | IH heating platform and IH pan | |
JP2003317919A (en) | Induction heating cooking device | |
JPH05187640A (en) | High-frequency heating device | |
JP4528824B2 (en) | Induction heating cooker | |
JPS6333358Y2 (en) | ||
JP3785569B2 (en) | Induction heating cooker | |
JPH01239790A (en) | Inductive heating device of electromagnetic cooker | |
JPH06272872A (en) | Heating cooker | |
JP3024564B2 (en) | Induction heating cooker |