JP2010010038A - Induction heating cooker - Google Patents

Induction heating cooker Download PDF

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JP2010010038A
JP2010010038A JP2008170270A JP2008170270A JP2010010038A JP 2010010038 A JP2010010038 A JP 2010010038A JP 2008170270 A JP2008170270 A JP 2008170270A JP 2008170270 A JP2008170270 A JP 2008170270A JP 2010010038 A JP2010010038 A JP 2010010038A
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induction heating
top plate
heating cooker
magnetic
heating coil
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JP4859883B2 (en
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Katsuten Sekine
加津典 関根
Koshiro Sakakibara
浩志郎 榊原
Meiichi Ogishima
盟一 荻島
Shigetoshi Ipposhi
茂俊 一法師
Takashi Ogawa
孝 小川
Yoshihiro Osano
義博 小佐野
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Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
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Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an induction heating cooker capable of restraining manufacturing costs without obstructing cooling of an induction heating coil and reducing a discharged amount of a leaked electromagnetic wave. <P>SOLUTION: The induction heating cooker 100 has a body case 10 as a box with an approximately rectangular parallelepiped, and a top plate 20 forming a top surface of the body case 10. The induction heating coils 30a, 30b for heating a heated object installed on the top plate 20 and radiant heater (radiant heating coil, not illustrated) are arranged right under the top plate 20. Furthermore, magnetic coatings 51a, 51b are applied on a circular zone (indicated by slanting lines) right above the induction heating coils 30a, 30b at a back surface of the top plate 20. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は誘導加熱調理器、特に、電磁波漏洩を低減する誘導加熱調理器に関するものである。   The present invention relates to an induction heating cooker, and more particularly to an induction heating cooker that reduces electromagnetic leakage.

誘導加熱調理器は、本体ケースに非磁性体によって形成された天板（トッププレート）が設けられ、天板の直下に誘導加熱コイルが配置され、本体ケース内には、これを駆動する駆動機構（電源装置および制御装置を備える）や駆動機構を冷却するための冷却機構等、を有している。
誘導加熱コイルは大電流の高周波電流を用いるため、僅かではあるが電磁波が周囲に放出される。かかる漏洩電磁波の放出量は人体に影響がないレベルであるものの、商品イメージの点から極力低減することが要請され、これに応える発明が開示されている（例えば、特許文献１参照）。 In the induction heating cooker, a top plate (top plate) formed of a non-magnetic material is provided in a main body case, and an induction heating coil is disposed directly under the top plate, and a drive mechanism that drives the inside of the main body case. (Including a power supply device and a control device), a cooling mechanism for cooling the drive mechanism, and the like.
Since the induction heating coil uses a high-frequency high current, a small amount of electromagnetic waves are emitted to the surroundings. Although the amount of leakage electromagnetic waves emitted is at a level that does not affect the human body, it is required to reduce as much as possible from the viewpoint of product image, and an invention that responds to this has been disclosed (for example, see Patent Document 1).

特許第３９３７４０４号公報（第６−７頁、図１３）Japanese Patent No. 3937404 (page 6-7, FIG. 13)

しかしながら、前記特許文献１に開示された発明は、誘導加熱コイルの周囲に、アルミニウム等の非磁性体によって形成されたリング（円筒体）を配置して、かかるリングを電磁波シールド部材とするものであるため、以下の問題があった。
（あ）電磁波シールド部材が金属製であるため、電磁波シールド部材自体が発熱する。
（い）誘導加熱コイルが電磁波シールド部材によって包囲されるため、誘導加熱コイルの冷却が阻害されるから、電磁波シールド部材内に熱が籠もり、誘導加熱コイルが高温になる。
（う）部材点数が増すため、製造コストが増すと共に、使用材料の多品種化によってリサイクル性が悪化する。 However, in the invention disclosed in Patent Document 1, a ring (cylindrical body) formed of a nonmagnetic material such as aluminum is disposed around the induction heating coil, and the ring is used as an electromagnetic shielding member. Therefore, there were the following problems.
(A) Since the electromagnetic shielding member is made of metal, the electromagnetic shielding member itself generates heat.
(I) Since the induction heating coil is surrounded by the electromagnetic shielding member, cooling of the induction heating coil is hindered, so that heat is trapped in the electromagnetic shielding member and the induction heating coil becomes high temperature.
(Iii) Since the number of members increases, the manufacturing cost increases, and the recyclability deteriorates due to the increase in the number of materials used.

本発明は、前記問題を解決するためになされたものであり、誘導加熱コイルの冷却を阻害することなく、製造コストを抑え、漏洩電磁波の放出量を低減可能な誘導加熱調理器を提供することを目的とする。   The present invention has been made to solve the above-described problems, and provides an induction heating cooker that can reduce the amount of leakage electromagnetic waves while suppressing the manufacturing cost without inhibiting cooling of the induction heating coil. With the goal.

本発明に係る誘導加熱調理器は、非磁性体によって形成された天板と、該天板の直下に配置されたコイルと、を有し、
前記天板の裏面で前記コイルの直上範囲を除く範囲の一部または全部に磁性塗料が塗布されていることを特徴とする。 The induction heating cooker according to the present invention has a top plate formed of a non-magnetic material, and a coil disposed immediately below the top plate,
A magnetic paint is applied to a part or all of the range except the range directly above the coil on the back surface of the top plate.

本発明は以上の構成であるから、誘導加熱コイルから放出される漏洩電磁波が磁性塗料によってシールされるため、僅かとはいえ放出される漏洩電磁波が庫外に漏洩しないため、商品イメージが向上する。さらに、特別の電磁波シールド部材を設置する必要がないから、製造コストが抑えられると共に、誘導加熱コイルの冷却が阻害されることがない。   Since the present invention has the above-described configuration, the leakage electromagnetic wave emitted from the induction heating coil is sealed by the magnetic paint, so that the leakage electromagnetic wave emitted is not leaked outside, but the product image is improved. . Furthermore, since it is not necessary to install a special electromagnetic shielding member, the manufacturing cost can be reduced and cooling of the induction heating coil is not hindered.

［実施の形態１］
図１〜図３は、本発明の実施の形態１に係る誘導加熱調理器を模式的に説明するものであって、図１は斜視図、図２は側面視の断面図、図３は平面図である。なお、各図は構成を模式的に表しているため、形状や大きさ（相対的な大小関係、縦横比率）は図示する形態に限定するものではない。また、各図における同じ部分または相当する部分には同じ符号を付し、一部の説明を省略する。 [Embodiment 1]
1 to 3 schematically illustrate an induction heating cooker according to Embodiment 1 of the present invention. FIG. 1 is a perspective view, FIG. 2 is a cross-sectional view in side view, and FIG. 3 is a plan view. FIG. In addition, since each figure represents the structure typically, a shape and magnitude | size (relative magnitude relationship, aspect ratio) are not limited to the form to show in figure. Moreover, the same code | symbol is attached | subjected to the same part in each figure, or a corresponding part, and one part description is abbreviate | omitted.

図１および図２において、誘導加熱調理器１００は、台所のキッチンテーブルに組み込まれるものであって、略直方体の函体である本体ケース１０と、 本体ケース１０の天面を構成するトッププレート（天板に同じ）２０とを有し、トッププレート２０の直下には、トッププレート２０に載置された被加熱物を加熱するための誘導加熱コイル３０ａ、３０ｂおよびラジエントヒーター（輻射加熱コイル、図示しない）が配置されている。
そして、トッププレート２０の表面には、直下に誘導加熱コイル３０ａ、３０ｂが位置していることを示す鍋載置サークル２１ａ、２１ｂと、直下にラジエントヒーターが位置していることを示す鍋載置サークル２１ｃと、が描かれている。 1 and 2, an induction heating cooker 100 is incorporated in a kitchen table of a kitchen, and includes a main body case 10 that is a substantially rectangular parallelepiped box, and a top plate that constitutes the top surface of the main body case 10 ( (Same as the top plate) 20 and directly below the top plate 20 are induction heating coils 30a and 30b for heating an object to be heated placed on the top plate 20 and a radiant heater (radiant heating coil, illustrated). Not arranged).
And on the surface of the top plate 20, the pan mounting circles 21a and 21b indicating that the induction heating coils 30a and 30b are positioned directly below, and the pan mounting indicating that the radiant heater is positioned directly below. A circle 21c is drawn.

また、トッププレート２０は略同一面状に天板枠体２２によって取り囲まれている。そして、天板枠体２２の前面寄りの位置には、誘導加熱コイルおよびラジエントヒーターを操作するための電源スイッチや表示パネルを具備する天板操作部２３が設けられ、天板枠体２２の背面寄りの位置には、本体ケース１０内の空気を排出する排気口２４が設けられている。
さらに、本体ケース１０の内部にはグリル加熱室６０が設けられ、グリル加熱室６０を開閉するグリル加熱室扉６１が本体ケース１０の前面１１に設置されている。なお、グリル加熱室６０からの排気も排気口２４から庫外に排気されるものである。 Further, the top plate 20 is surrounded by a top plate frame 22 in substantially the same plane. A top panel operating unit 23 including a power switch and a display panel for operating the induction heating coil and the radiant heater is provided at a position near the front surface of the top panel frame 22. An exhaust port 24 for discharging the air in the main body case 10 is provided at a position closer to it.
Further, a grill heating chamber 60 is provided inside the main body case 10, and a grill heating chamber door 61 that opens and closes the grill heating chamber 60 is installed on the front surface 11 of the main body case 10. The exhaust from the grill heating chamber 60 is also exhausted from the exhaust port 24 to the outside of the cabinet.

図３において、トッププレート２０の裏面の円環状範囲（斜線にて示す）に磁性塗料５１ａ、５１ｂが塗布されている。なお、平面図である図３において、裏面に塗布された磁性塗料５１ａ、５１ｂを視認することはできない。また、実線にて示す円４０ａ、４０ｂは、トッププレート２０の直下に配置された誘導加熱コイル３０ａ、３０ｂの外径の位置を、説明の便宜上示すものであって、トッププレート２０の裏面に描かれたものではない。
したがって、誘導加熱コイル３０ａ、３０ｂから放出される漏洩電磁波が、円環状範囲に塗布された磁性塗料５１ａ、５１ｂによってシールされるから、僅かとはいえ放出される漏洩電磁波が庫外に漏洩しないため、誘導加熱調理器１００に対する商品イメージが向上する。 In FIG. 3, magnetic paints 51 a and 51 b are applied to an annular area (indicated by oblique lines) on the back surface of the top plate 20. In addition, in FIG. 3 which is a top view, the magnetic coating materials 51a and 51b apply | coated to the back surface cannot be visually recognized. Further, circles 40a and 40b indicated by solid lines indicate the positions of the outer diameters of the induction heating coils 30a and 30b arranged immediately below the top plate 20, and are drawn on the back surface of the top plate 20 for convenience of explanation. It was n’t.
Therefore, since the leaked electromagnetic waves emitted from the induction heating coils 30a and 30b are sealed by the magnetic paints 51a and 51b applied in the annular region, the leaked electromagnetic waves that are emitted are not leaked to the outside. The product image for the induction heating cooker 100 is improved.

さらに、特別の電磁波シールド部材（たとえば、アルミニウム製のリング等）を設置する必要がないから、製造コストが抑えられる。また、本体ケース１０内を流れる空気流は、誘導加熱コイルに到達するから、誘導加熱コイル３０ａ、３０ｂの冷却が阻害されることがない。
なお、本発明は磁性塗料の組成を限定するものではなく、電磁波を遮断する効果あるいは電磁波の透過を抑制する効果を有するものであればよい。通常、磁性塗料には磁性粉、バインダーおよび溶剤の他に、導電性粒子、湿潤剤、潤滑剤および帯電防止剤などが含まれる。磁性粉の代表的なものは、γ−Ｆｅ3Ｏ3、ＣｒＯ2、Ｆｅを主成分とするパウダーメタルである。また、バインダーとしてはウレタン樹脂、ビニル樹脂などが使用される。
さらに、前記磁性塗料に熱伝導率の高い物質が混在され、熱伝導率が向上されたものであってもよい。前記熱伝導率の高い物質としては、たとえば、銀粉末やアルミニウム粉末等が用いられるが、これに限定するものではない。 Furthermore, since it is not necessary to install a special electromagnetic shielding member (for example, an aluminum ring), the manufacturing cost can be reduced. Moreover, since the airflow which flows through the inside of the main body case 10 reaches the induction heating coil, the cooling of the induction heating coils 30a and 30b is not hindered.
The present invention is not limited to the composition of the magnetic coating material, and any composition that has an effect of blocking electromagnetic waves or suppressing transmission of electromagnetic waves may be used. Usually, the magnetic paint contains conductive particles, a wetting agent, a lubricant, an antistatic agent and the like in addition to the magnetic powder, binder and solvent. A typical example of the magnetic powder is powder metal mainly composed of γ-Fe 3 O 3 , CrO 2 , and Fe. As the binder, urethane resin, vinyl resin or the like is used.
Further, a material having high thermal conductivity may be mixed in the magnetic paint to improve the thermal conductivity. Examples of the material having high thermal conductivity include silver powder and aluminum powder, but are not limited thereto.

［実施の形態２］
図４は、本発明の実施の形態２に係る誘導加熱調理器を模式的に説明する平面図である。なお、実施の形態１（図３）と同じ部分にはこれと同じ符号を付し、一部の説明を省略する。
図４において、誘導加熱調理器２００のトッププレート２０の裏面には、円４０ａ、４０ｂ、４０ｃを除く全域（斜線にて示す）に磁性塗料５２が塗布されている。なお、実線にて示す円４０ｃは、トッププレート２０の直下に配置されたラジエントヒーター（図示しない）の外径の位置を、説明の便宜上示すものであって、トッププレート２０の裏面に描かれたものではない。 [Embodiment 2]
FIG. 4 is a plan view schematically illustrating the induction heating cooker according to the second embodiment of the present invention. In addition, the same code | symbol is attached | subjected to this same part as Embodiment 1 (FIG. 3), and one part description is abbreviate | omitted.
In FIG. 4, the magnetic coating 52 is applied to the entire surface (shown by diagonal lines) excluding circles 40 a, 40 b, and 40 c on the back surface of the top plate 20 of the induction heating cooker 200. A circle 40c indicated by a solid line indicates the position of the outer diameter of a radiant heater (not shown) arranged immediately below the top plate 20, and is drawn on the back surface of the top plate 20 for convenience of explanation. It is not a thing.

したがって、誘導加熱コイル３０ａ、３０ｂから放出される漏洩電磁波が、略全域に塗布された磁性塗料５２によってシールされるから、僅かとはいえ放出される漏洩電磁波が庫外に漏洩しないため、誘導加熱調理器１００に対する商品イメージが向上する。
さらに、特別の電磁波シールド部材（たとえば、アルミニウム製のリング等）を設置する必要がないから、製造コストが抑えられる。また、本体ケース１０内を流れる空気流は、誘導加熱コイルに到達するから、誘導加熱コイル３０ａ、３０ｂの冷却が阻害されることがない。 Therefore, since the leakage electromagnetic waves emitted from the induction heating coils 30a and 30b are sealed by the magnetic paint 52 applied to almost the entire area, the emitted electromagnetic waves are not leaked to the outside of the cabinet even though they are small, so that the induction heating is performed. The product image for the cooking device 100 is improved.
Furthermore, since it is not necessary to install a special electromagnetic shielding member (for example, an aluminum ring), the manufacturing cost can be reduced. Moreover, since the airflow which flows through the inside of the main body case 10 reaches the induction heating coil, the cooling of the induction heating coils 30a and 30b is not hindered.

［実施の形態３］
図５は、本発明の実施の形態３に係る誘導加熱調理器を模式的に説明する平面図である。なお、実施の形態２（図４）と同じ部分にはこれと同じ符号を付し、一部の説明を省略する。
図５において、誘導加熱調理器３００のトッププレート２０の裏面には、トッププレート２０の裏面に沿って流れる空気流と並行になる凹条および凸条を形成するように、磁性塗料５３ａ、５３ｂが塗布されている。
すなわち、誘導加熱コイル３０ａ、３０ｂを抱え込むように塗布された磁性塗料５３ａ、５３ｂによって凸条（所定幅の凸部であって、所定の長さを具備する）が形成され、該凸部に挟まれた範囲には、磁性塗料５３ａ、５３ｂが塗布されていない凹条（所定幅の凹部であって、所定の長さを具備する）が形成されている。このとき、トッププレート２０の裏面は凹凸によって表面積が増すから、本体ケース１０の内部を流れる空気流はトッププレート２０の裏面と広い面積において熱交換することになる。なお、磁性塗料の塗布厚さを変更して、厚い範囲によって凸条を、薄い範囲によって凹条を形成するようにしてもよい。 [Embodiment 3]
FIG. 5 is a plan view schematically illustrating an induction heating cooker according to Embodiment 3 of the present invention. The same parts as those in the second embodiment (FIG. 4) are denoted by the same reference numerals, and a part of the description is omitted.
In FIG. 5, magnetic paints 53 a and 53 b are formed on the back surface of the top plate 20 of the induction heating cooker 300 so as to form ridges and ridges parallel to the airflow flowing along the back surface of the top plate 20. It has been applied.
That is, a convex strip (a convex portion having a predetermined width and having a predetermined length) is formed by the magnetic coating materials 53a and 53b applied so as to hold the induction heating coils 30a and 30b, and is sandwiched between the convex portions. In this range, recesses (recesses having a predetermined width and having a predetermined length) to which the magnetic paints 53a and 53b are not applied are formed. At this time, since the surface area of the back surface of the top plate 20 increases due to the unevenness, the air flow flowing inside the main body case 10 exchanges heat with the back surface of the top plate 20 in a wide area. In addition, you may make it change the application | coating thickness of a magnetic coating material, and may form a protruding item | line by a thick range, and a concave item by a thin range.

よって、本体ケース１０内に収納された誘導加熱コイル３０ａ、３０ｂや各種装置（制御基板等）を冷却した空気流は、比較的高温になることが多いため、これを早い段階で放熱させることが可能になる。
なお、本発明は、凹条および凸条の形成形態を図示するもの（略Ｕ字状）に限定するものではなく、本体ケース１０の内部に形成される空気流の形態に応じて凹条および凸条の形成形態も変更されるものである。
さらに、円４０ａ、４０ｂの内側に磁性塗料が塗布された場合には、アルミニウムや銅によって製造された鍋に働く浮力を抑えることができる。 Therefore, since the air flow that has cooled the induction heating coils 30a and 30b and various devices (control board, etc.) housed in the main body case 10 is often relatively high in temperature, it can be radiated at an early stage. It becomes possible.
In addition, this invention is not limited to what illustrates the formation form of a recessed line and a protruding line (substantially U shape), According to the form of the air flow formed in the inside of the main body case 10, The formation form of the ridges is also changed.
Furthermore, when a magnetic paint is applied to the inside of the circles 40a and 40b, buoyancy acting on a pan made of aluminum or copper can be suppressed.

［実施の形態４］
図６は、本発明の実施の形態４に係る誘導加熱調理器を模式的に説明する平面図である。なお、実施の形態１（図３）と同じ部分にはこれと同じ符号を付し、一部の説明を省略する。
図６において、誘導加熱調理器４００のトッププレート２０の裏面には、円４０ａ、４０ｂの内側に、放射状に磁性塗料５４ａ、５４ｂが塗布されている。
したがって、アルミニウムや銅によって製造された鍋を使用する場合であっても、当該鍋に働く浮力を抑えることができる。よって、かかる浮力を防止するため、トッププレート２０と誘導加熱コイル３０ａ、３０ｂとの間にアルミニウムの薄板を介在させる必要がなくなるから、製造コストが安価になる。
なお、本発明は円４０ａ、４０ｂの外側に磁性塗料が塗布されることを排除するものではなく、誘導加熱調理器１００、２００、３００（実施の形態１、２、３）において、円４０ａ、４０ｂの内側に磁性塗料５４ａ、５４ｂを塗布してもよい。 [Embodiment 4]
FIG. 6 is a plan view schematically illustrating an induction heating cooker according to Embodiment 4 of the present invention. In addition, the same code | symbol is attached | subjected to this same part as Embodiment 1 (FIG. 3), and one part description is abbreviate | omitted.
In FIG. 6, on the back surface of the top plate 20 of the induction heating cooker 400, magnetic paints 54a and 54b are applied radially inside circles 40a and 40b.
Therefore, even when a pan made of aluminum or copper is used, the buoyancy acting on the pan can be suppressed. Therefore, in order to prevent such buoyancy, it is not necessary to interpose a thin aluminum plate between the top plate 20 and the induction heating coils 30a and 30b, so that the manufacturing cost is reduced.
The present invention does not exclude that the magnetic paint is applied to the outside of the circles 40a and 40b. In the induction heating cookers 100, 200, and 300 (Embodiments 1, 2, and 3), the circle 40a, Magnetic paints 54a and 54b may be applied to the inside of 40b.

［実施の形態５］
図７は、本発明の実施の形態５に係る誘導加熱調理器を模式的に説明するものであって、（ａ）は平面図、（ｂ）は側面視の断面図である。なお、実施の形態１（図３）と同じ部分にはこれと同じ符号を付し、一部の説明を省略する。
図７において、誘導加熱調理器５００のトッププレート２０の裏面には、円４０ａ、４０ｂの内側に磁性塗料５５ａ、５５ｂが塗布され、円４０ａ、４０ｂの外側に磁性塗料５１ａ、５１ｂが円環状に塗布されている。このとき、磁性塗料５５ａ、５５ｂの厚さが、磁性塗料５１ａ、５１ｂの厚さより薄くなっている。 [Embodiment 5]
7A and 7B schematically illustrate an induction heating cooker according to Embodiment 5 of the present invention, in which FIG. 7A is a plan view and FIG. 7B is a cross-sectional view in side view. In addition, the same code | symbol is attached | subjected to this same part as Embodiment 1 (FIG. 3), and one part description is abbreviate | omitted.
In FIG. 7, on the back surface of the top plate 20 of the induction heating cooker 500, magnetic paints 55a and 55b are applied to the inside of circles 40a and 40b, and the magnetic paints 51a and 51b are annularly formed on the outside of the circles 40a and 40b. It has been applied. At this time, the thickness of the magnetic coating materials 55a and 55b is smaller than the thickness of the magnetic coating materials 51a and 51b.

すなわち、誘導加熱調理器１００（実施の形態１）における円４０ａ、４０ｂの内側に磁性塗料５５ａ、５５ｂが塗布したものに同じであるから、誘導加熱調理器１００の作用効果に加え、アルミニウムや銅によって製造された鍋を使用する場合に、当該鍋に働く浮力を抑えることができる。よって、誘導加熱調理器５００に対する商品イメージが向上すると共に、前記浮力を防止するため、トッププレート２０と誘導加熱コイル３０ａ、３０ｂとの間にアルミニウムの薄板を介在させる必要がなくなるから、製造コストが安価になる。
なお、本発明は円４０ａ、４０ｂの外側に塗布される磁性塗料の形態を限定するものではなく、誘導加熱調理器２００、３００（実施の形態１、２、３）において、円４０ａ、４０ｂの内側に磁性塗料５５ａ、５５ｂを塗布してもよい。 That is, since it is the same as that in which the magnetic paints 55a and 55b are applied to the inside of the circles 40a and 40b in the induction heating cooker 100 (Embodiment 1), in addition to the effects of the induction heating cooker 100, aluminum or copper When the pan manufactured by is used, the buoyancy acting on the pan can be suppressed. Accordingly, the product image for the induction heating cooker 500 is improved, and it is not necessary to interpose a thin aluminum plate between the top plate 20 and the induction heating coils 30a and 30b in order to prevent the buoyancy. It will be cheaper.
In addition, this invention does not limit the form of the magnetic coating material apply | coated to the outer side of circle | round | yen 40a, 40b, In induction heating cooking appliances 200, 300 (Embodiment 1, 2, 3), the circle | round | yen 40a, 40b Magnetic paints 55a and 55b may be applied on the inner side.

［実施の形態６］
図８は、本発明の実施の形態６に係る誘導加熱調理器を模式的に説明する、一部断面の斜視図である。なお、実施の形態１（図２）と同じ部分にはこれと同じ符号を付し、一部の説明を省略する。
図８において、誘導加熱調理器６００の誘導加熱コイル３０ａ、３０ｂが設置されたコイルベース３１ａ、３１ｂの外周面および外周寄り端面に、磁性塗料５６ａおよび５７ａ、５６ｂおよび５７ｂが塗布されている。なお、これらは何れも同様の形態であるから、コイルベース３１ａについて説明し、コイルベース３１ｂについての説明を省略する。 [Embodiment 6]
FIG. 8 is a partial cross-sectional perspective view schematically illustrating the induction heating cooker according to the sixth embodiment of the present invention. The same parts as those in Embodiment 1 (FIG. 2) are denoted by the same reference numerals, and a part of the description is omitted.
In FIG. 8, magnetic paints 56a and 57a, 56b and 57b are applied to the outer peripheral surfaces and end surfaces closer to the outer periphery of the coil bases 31a and 31b where the induction heating coils 30a and 30b of the induction heating cooker 600 are installed. In addition, since these are the same forms, the coil base 31a will be described and the description of the coil base 31b will be omitted.

コイルベース３１ａは、内周縁の表裏面に形成された内筒部３３ａおよび外周縁の表裏面に形成された外筒部３５ａを具備する円環部３２ａと、円環部３２ａの半径方向の略中間で表面に形成された中間筒部３４ａとを有している。そして、外筒部３５ａの外側面および上端面に磁性塗料５６ａおよび磁性塗料５７ａが塗布されている。
また、表面の内筒部３３ａと中間筒部３４ａとの間、および中間筒部３４ａと外筒部３５ａとの間に、それぞれ誘導加熱コイル３０ａが設置されている。また、裏面の内筒部３３ａと外筒部３５ａとの間にはフェライト３６ａが設置されている。 The coil base 31a includes an annular portion 32a having an inner cylindrical portion 33a formed on the front and back surfaces of the inner peripheral edge and an outer cylindrical portion 35a formed on the front and rear surfaces of the outer peripheral edge, and a substantially radial direction of the annular portion 32a. And an intermediate cylinder part 34a formed on the surface in the middle. And the magnetic coating material 56a and the magnetic coating material 57a are apply | coated to the outer side surface and upper end surface of the outer cylinder part 35a.
In addition, induction heating coils 30a are respectively installed between the inner cylindrical portion 33a and the intermediate cylindrical portion 34a on the surface and between the intermediate cylindrical portion 34a and the outer cylindrical portion 35a. A ferrite 36a is installed between the inner cylinder part 33a and the outer cylinder part 35a on the back surface.

したがって、誘導加熱コイル３０ａ、３０ｂから放出される漏洩電磁波が、外筒部３５に塗布された磁性塗料５６によってシールされるから、僅かとはいえ放出される漏洩電磁波が庫外に漏洩しないため、誘導加熱調理器６００に対する商品イメージが向上する。   Therefore, since the leaked electromagnetic waves emitted from the induction heating coils 30a and 30b are sealed by the magnetic paint 56 applied to the outer cylinder portion 35, the leaked electromagnetic waves that are emitted are not leaked to the outside of the warehouse. The product image for the induction heating cooker 600 is improved.

本発明は、誘導加熱コイルの冷却を阻害することなく、製造コストを抑え、漏洩電磁波の放出量を低減することが可能になるから、事業用および家庭用の各種誘導加熱調理器として広く利用することができる。   The present invention can be widely used as various induction heating cookers for business use and home use because the manufacturing cost can be reduced and the amount of leaked electromagnetic waves can be reduced without inhibiting the cooling of the induction heating coil. be able to.

本発明の実施の形態１に係る誘導加熱調理器を模式的に説明する斜視図。The perspective view which illustrates typically the induction heating cooking appliance which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る誘導加熱調理器を模式的に説明する断面図。Sectional drawing which illustrates typically the induction heating cooking appliance which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る誘導加熱調理器を模式的に説明する平面図。The top view which illustrates typically the induction heating cooking appliance which concerns on Embodiment 1 of this invention. 本発明の実施の形態２に係る誘導加熱調理器を模式的に説明する平面図。The top view which illustrates typically the induction heating cooking appliance which concerns on Embodiment 2 of this invention. 本発明の実施の形態３に係る誘導加熱調理器を模式的に説明する平面図。The top view which illustrates typically the induction heating cooking appliance which concerns on Embodiment 3 of this invention. 本発明の実施の形態４に係る誘導加熱調理器を模式的に説明する平面図。The top view which illustrates typically the induction heating cooking appliance which concerns on Embodiment 4 of this invention. 本発明の実施の形態５に係る誘導加熱調理器を説明する平面図と断面図。The top view and sectional drawing explaining the induction heating cooking appliance which concerns on Embodiment 5 of this invention. 本発明の実施の形態６に係る誘導加熱調理器を説明する一部断面の斜視図。The perspective view of the partial cross section explaining the induction heating cooking appliance which concerns on Embodiment 6 of this invention.

符号の説明Explanation of symbols

１０：本体ケース、１１：前面、２０：トッププレート、２１ａ：鍋載置サークル、２１ｂ：鍋載置サークル、２１ｃ：鍋載置サークル、２２：天板枠体、２３：天板操作部、２４：排気口、３０ａ：誘導加熱コイル、３０ｂ：誘導加熱コイル、３１：コイルベース、３２：円環部、３３：内筒部、３４：中間筒部、３５：外筒部、３６：フェライト、４０ａ：円、４０ｂ：円、４０ｃ：円、５１ａ：磁性塗料(実施の形態１）、５１ｂ：磁性塗料(実施の形態１）、５２：磁性塗料(実施の形態２）、５３ａ：磁性塗料(実施の形態３）、５３ｂ：磁性塗料(実施の形態３）、５４ａ：磁性塗料(実施の形態４）、５４ｂ：磁性塗料(実施の形態４）、５５ａ：磁性塗料(実施の形態５）、５５ｂ：磁性塗料(実施の形態５）、５６ａ：磁性塗料(実施の形態６）、５７ａ：磁性塗料(実施の形態６）、６０：グリル加熱室、６１：グリル加熱室扉、１００：誘導加熱調理器(実施の形態１）、２００：誘導加熱調理器(実施の形態２）、３００：誘導加熱調理器(実施の形態３）、４００：誘導加熱調理器(実施の形態４）、５００：誘導加熱調理器(実施の形態５）、６００：誘導加熱調理器(実施の形態６）。   10: body case, 11: front surface, 20: top plate, 21a: pan mounting circle, 21b: pan mounting circle, 21c: pan mounting circle, 22: top plate frame, 23: top plate operating unit, 24 : Exhaust port, 30a: induction heating coil, 30b: induction heating coil, 31: coil base, 32: annular part, 33: inner cylinder part, 34: intermediate cylinder part, 35: outer cylinder part, 36: ferrite, 40a : Circle, 40b: Circle, 40c: Circle, 51a: Magnetic paint (Embodiment 1), 51b: Magnetic paint (Embodiment 1), 52: Magnetic paint (Embodiment 2), 53a: Magnetic paint (Implementation) 3), 53b: Magnetic paint (Embodiment 3), 54a: Magnetic paint (Embodiment 4), 54b: Magnetic paint (Embodiment 4), 55a: Magnetic paint (Embodiment 5), 55b : Magnetic paint (Embodiment 5), 56a: Magnetic paint (Embodiment Embodiment 6), 57a: Magnetic paint (Embodiment 6), 60: Grill heating chamber, 61: Grill heating chamber door, 100: Induction heating cooker (Embodiment 1), 200: Induction heating cooker (Embodiment) Form 2), 300: induction heating cooker (Embodiment 3), 400: induction heating cooker (Embodiment 4), 500: induction heating cooker (Embodiment 5), 600: induction heating cooker ( Embodiment 6).

Claims (7)

非磁性体によって形成された天板と、該天板の直下に配置されたコイルと、を有し、
前記天板の裏面で前記コイルの直上範囲を除く範囲の一部または全部に磁性塗料が塗布されていることを特徴とする誘導加熱調理器。 A top plate formed of a non-magnetic material, and a coil disposed immediately below the top plate,
An induction heating cooker, wherein a magnetic paint is applied to a part or all of a range excluding the range directly above the coil on the back surface of the top plate. 前記天板の裏面に沿って流れる空気流が形成され、
前記磁性塗料が、前記空気流と並行になる凹条および凸条を形成するように塗布されていることを特徴とする請求項１記載の誘導加熱調理器。 An air flow flowing along the back surface of the top plate is formed,
The induction heating cooker according to claim 1, wherein the magnetic paint is applied so as to form a concave line and a convex line parallel to the air flow. 非磁性体によって形成された天板と、該天板の直下に配置された誘導加熱コイルと、を有し、
前記天板の裏面で前記誘導加熱コイルの直上範囲を包囲する環状範囲に磁性塗料が塗布されていることを特徴とする誘導加熱調理器。 A top plate formed of a non-magnetic material, and an induction heating coil disposed immediately below the top plate,
An induction heating cooker, wherein a magnetic paint is applied to an annular range surrounding a range immediately above the induction heating coil on the back surface of the top plate. 前記天板の裏面で前記誘導加熱コイルの直上範囲にも磁性塗料が塗布され、
該直上範囲に塗布された磁性塗料の厚さが、前記直上範囲を除く範囲に塗布された磁性材料の厚さより薄いことを特徴とする請求項１乃至３の何れかに記載の誘導加熱調理器。 Magnetic paint is also applied to the range directly above the induction heating coil on the back surface of the top plate,
The induction heating cooker according to any one of claims 1 to 3, wherein the thickness of the magnetic coating applied to the range immediately above is thinner than the thickness of the magnetic material applied to a range excluding the range just above. . 非磁性体によって形成された天板と、該天板の直下に配置された誘導加熱コイルと、を有し、
前記天板の裏面で前記誘導加熱コイルの直上範囲に放射状に磁性塗料が塗布されていることを特徴とする誘導加熱調理器。 A top plate formed of a non-magnetic material, and an induction heating coil disposed immediately below the top plate,
An induction heating cooker, wherein a magnetic paint is radially applied to a range immediately above the induction heating coil on the back surface of the top plate. 非磁性体によって形成された天板と、該天板の直下に配置された誘導加熱コイルと、該誘導加熱コイルを保持する誘導加熱コイル保持部と、を有し、
前記誘導加熱コイル保持部の周囲に環状に磁性塗料が塗布されていることを特徴とする誘導加熱調理器。 A top plate formed of a non-magnetic material, an induction heating coil disposed immediately below the top plate, and an induction heating coil holding unit for holding the induction heating coil,
An induction heating cooker, wherein a magnetic paint is applied in an annular shape around the induction heating coil holding portion. 前記磁性塗料は、熱伝導率の高い物質が混在され、熱伝導率が向上されていることを特徴とする請求項１乃至６の何れかに記載の誘導加熱調理器。   The induction heating cooker according to any one of claims 1 to 6, wherein the magnetic paint is mixed with a substance having high thermal conductivity to improve thermal conductivity.
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