JP2011108431A - Induction heating cooker - Google Patents

Induction heating cooker Download PDF

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JP2011108431A
JP2011108431A JP2009260587A JP2009260587A JP2011108431A JP 2011108431 A JP2011108431 A JP 2011108431A JP 2009260587 A JP2009260587 A JP 2009260587A JP 2009260587 A JP2009260587 A JP 2009260587A JP 2011108431 A JP2011108431 A JP 2011108431A
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case
infrared sensor
side wall
sensor unit
induction heating
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JP5549188B2 (en
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Noriaki Watanabe
範明 渡邉
Ryuji Nagata
隆二 永田
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Panasonic Corp
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    • 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
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • 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
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/07—Heating plates with temperature control means

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Induction Heating Cooking Devices (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an induction heating cooker having an infrared sensor unit avoiding a reduction in temperature sensing performance of the infrared sensor caused by electric noise and intrusion of dust and disturbance light and avoiding a reduction in temperature sensing performance under the influence of temperature rising. <P>SOLUTION: The infrared sensor unit 24 detecting infrared rays radiated from a heated object 21 includes the infrared sensor 3, a case A1 having a side wall 8 formed by bending an end of a planar part 7, and a case B having a side wall 10 formed by bending an end of a planar part 9 larger than the planar part 7 of the case A1. A gap 12 is disposed between the side walls 8, 10 and cool air is sent from a cooling fan 28 to the gap 12. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、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.

従来、この種の誘導加熱調理器は安全性と調理性能の向上のため、その出力から温度調節を行えるように被加熱物から放射される赤外線を検出する赤外線センサが設けられ、赤外線センサには電気的なノイズ、埃や外乱光の進入による性能の低下を防ぐためにケースが設けられている（例えば、特許文献１参照）。   Conventionally, in order to improve safety and cooking performance, this type of induction heating cooker has been provided with an infrared sensor that detects infrared radiation emitted from the heated object so that the temperature can be adjusted from the output. A case is provided to prevent deterioration in performance due to the entrance of electrical noise, dust, and ambient light (see, for example, Patent Document 1).

特開２００８−２２６５７３号公報JP 2008-226573 A

しかしながら、前記従来のケースの構成では、箱体を形成している２つのケースの側壁間が当接しているため、赤外線センサを冷却するための冷却風を送風するためにはケースに貫通穴を設ける必要があり、それによって埃や外乱光が進入し、温度検知性能が低下するという課題を有していた。また、貫通穴によるシールド効果が低下し、温度検知性能が低下するという課題を有していた。   However, in the structure of the conventional case, the side walls of the two cases forming the box are in contact with each other, so that a through hole is provided in the case in order to blow cooling air for cooling the infrared sensor. Therefore, there is a problem in that dust and ambient light enter, thereby lowering the temperature detection performance. Moreover, the shielding effect by a through-hole fell and it had the subject that temperature detection performance fell.

本発明は、埃や外乱光の進入を防ぎ、シールド効果を確保しつつ冷却性能を向上させ、ケース内の温度上昇の影響による温度検知性能の低下を防ぐことができる赤外線センサユニットを備えた誘導加熱調理器を提供することを目的とする。   The present invention is an induction equipped with an infrared sensor unit that prevents entry of dust and ambient light, improves the cooling performance while ensuring the shielding effect, and prevents the temperature detection performance from being lowered due to the temperature rise in the case. An object is to provide a cooking device.

前記従来の課題を解決するために、被加熱物を誘導加熱する加熱コイルと、前記加熱コイルに高周波電流を供給するインバータ回路と、前記被加熱物から放射される赤外線を検出する赤外線センサユニットと、前記赤外線センサユニットの出力より前記被加熱物の温度を算出する温度算出手段と、前記温度算出手段の出力に応じて前記インバータ回路の出力を制御する制御手段と、外気を本体内に送風する冷却ファンとを備え、前記赤外線センサユニットは赤外線センサと、平面部の端部を折り曲げて形成した側壁を有するケースＡと、前記ケースＡの平面部より大なる平面部の端部を折り曲げて形成した側壁を有するケースＢとで構成され、相互の側壁間に隙間を設けた構成としたものである。   In order to solve the conventional problems, a heating coil for inductively heating an object to be heated, an inverter circuit for supplying a high frequency current to the heating coil, an infrared sensor unit for detecting infrared rays radiated from the object to be heated, Temperature calculating means for calculating the temperature of the object to be heated from the output of the infrared sensor unit, control means for controlling the output of the inverter circuit according to the output of the temperature calculating means, and blowing outside air into the main body A cooling fan, and the infrared sensor unit is formed by bending an infrared sensor, a case A having a side wall formed by bending an end portion of the flat portion, and an end portion of the flat portion larger than the flat portion of the case A. And a case B having a side wall with a gap provided between the side walls.

これにより、相互の側壁間の隙間に冷却風を送風することができ、冷却性能を向上させケース内の温度上昇の影響による温度検知性能の低下を防ぐことができる。また、更なる冷却性能向上のためにケース内に冷却風を送風ための穴や切り欠きなどの開口を設ける場合においても、相互の側壁間で貫通しないように互い違いに開口設けることで、電気的なノイズ、埃や外乱光の進入による赤外線センサの温度検知性能の低下を防ぐことができる。   Thereby, the cooling air can be blown into the gap between the side walls, so that the cooling performance can be improved and the temperature detection performance can be prevented from deteriorating due to the temperature rise in the case. Moreover, even when providing openings such as holes and notches for blowing cooling air in the case for further cooling performance improvement, by providing openings alternately so as not to penetrate between the side walls, It is possible to prevent deterioration of the temperature detection performance of the infrared sensor due to the entrance of noise, dust and ambient light.

本発明の誘導加熱調理器の赤外線センサユニットは、埃や外乱光の進入を防ぎ、シールド効果を確保しつつ冷却性能を向上させ、ケース内の温度上昇の影響による温度検知性能の低下を防ぐことができる。   The infrared sensor unit of the induction heating cooker of the present invention prevents the entry of dust and ambient light, improves the cooling performance while ensuring the shielding effect, and prevents the temperature detection performance from being lowered due to the temperature rise in the case Can do.

本発明の実施の形態１における誘導加熱調理器の断面図Sectional drawing of the induction heating cooking appliance in Embodiment 1 of this invention 本発明の実施の形態１における赤外線センサユニットの分解斜視図1 is an exploded perspective view of an infrared sensor unit according to Embodiment 1 of the present invention. 本発明の実施の形態１における赤外線センサユニットの正面図および断面図The front view and sectional drawing of the infrared sensor unit in Embodiment 1 of this invention 本発明の実施の形態２における赤外線センサユニットの正面図および断面図Front view and sectional view of infrared sensor unit according to Embodiment 2 of the present invention 本発明の実施の形態３における赤外線センサユニットの斜視図The perspective view of the infrared sensor unit in Embodiment 3 of this invention 本発明の実施の形態３における赤外線センサユニットの斜視図The perspective view of the infrared sensor unit in Embodiment 3 of this invention 本発明の実施の形態４における赤外線センサユニットの斜視図および正面図および側面図および断面図The perspective view of the infrared sensor unit in Embodiment 4 of this invention, a front view, a side view, and sectional drawing 本発明の実施の形態５における赤外線センサユニットの斜視図および正面図The perspective view and front view of the infrared sensor unit in Embodiment 5 of this invention

第１の発明は、被加熱物を誘導加熱する加熱コイルと、前記加熱コイルに高周波電流を供給するインバータ回路と、前記被加熱物から放射される赤外線を検出する赤外線センサユニットと、前記赤外線センサの出力より前記被加熱物の温度を算出する温度算出手段と、前記温度算出手段の出力に応じて前記インバータ回路の出力を制御する制御手段と外気を本体内に送風する冷却ファンとを備え、前記赤外線センサユニットは赤外線センサと、平面部の端部を折り曲げて形成した側壁を有するケースＡと、前記ケースＡの平面部より大なる平面部の端部を折り曲げて形成した側壁を有するケースＢとで構成され、相互の側壁間に隙間を設けた構成により、相互の側壁間の隙間に冷却風を送風することができ、冷却性能を向上させ、ケース内の温度上昇の影響による温度検知性能の低下を防ぐことができる。また、ケースＡの側壁端面とケースＢの平面部が接しているため、電気的なノイズ、埃や外乱光の進入による赤外線センサの温度検知性能の低下を防ぐことができる。   1st invention is the heating coil which induction-heats a to-be-heated object, the inverter circuit which supplies a high frequency current to the said heating coil, the infrared sensor unit which detects the infrared rays radiated | emitted from the said to-be-heated object, and the said infrared sensor Temperature calculating means for calculating the temperature of the object to be heated from the output of, a control means for controlling the output of the inverter circuit according to the output of the temperature calculating means, and a cooling fan for blowing outside air into the main body, The infrared sensor unit includes an infrared sensor, a case A having a side wall formed by bending an end portion of a flat portion, and a case B having a side wall formed by bending an end portion of a flat portion larger than the flat portion of the case A. With the configuration in which a gap is provided between the side walls, cooling air can be blown into the gap between the side walls, improving the cooling performance, It is possible to prevent a decrease in temperature detection performance due to the influence of degree rise. In addition, since the side wall end face of case A and the flat portion of case B are in contact with each other, it is possible to prevent a decrease in temperature detection performance of the infrared sensor due to the entrance of electrical noise, dust, or ambient light.

第２の発明は、特に、第１の発明のケースＡの側壁端部とケースＢの平面部の間に隙間を設けた構成としたことにより、ケースＡ内に冷却風を送風することができ、直接赤外線センサを冷却することができ、ケース内の温度上昇の影響による温度検知性能の低下を防ぐことができる。また、赤外線センサを通る送風経路は蛇行するため、電気的なノイズ、埃や外乱光の進入による赤外線センサの温度検知性能の低下を防ぐことができる。   In the second invention, in particular, the cooling air can be blown into the case A by providing a gap between the side wall end portion of the case A and the flat portion of the case B of the first invention. The infrared sensor can be directly cooled, and the temperature detection performance can be prevented from being lowered due to the temperature rise in the case. Moreover, since the ventilation path | route which passes along an infrared sensor meanders, the fall of the temperature detection performance of an infrared sensor by the approach of an electrical noise, dust, and disturbance light can be prevented.

第３の発明は、特に、第１または第２の発明のケースＡまたはケースＢのいずれか一方の側壁に穴または切り欠きなどの開口を設けた構成としたことにより、冷却風の送風経路を拡大し、冷却性能を十分に確保することができ、ケース内の温度上昇の影響による温度検知性能の低下を防ぐことができる。また、赤外線センサを通る送風経路は蛇行するため、電気的なノイズ、埃や外乱光の進入による赤外線センサの温度検知性能の低下を防ぐことができる。   In particular, the third aspect of the invention has a structure in which an opening such as a hole or a notch is provided in one of the side walls of the case A or the case B of the first or second aspect of the invention. It is possible to expand and secure sufficient cooling performance, and it is possible to prevent the temperature detection performance from being lowered due to the temperature rise in the case. Moreover, since the ventilation path | route which passes along an infrared sensor meanders, the fall of the temperature detection performance of an infrared sensor by the approach of an electrical noise, dust, and disturbance light can be prevented.

第４の発明は、特に、第１または第２の発明のケースＡおよびケースＢの両方の側壁に穴または切り欠きなどの開口を設け、かつ互いの開口および隙間が側壁垂直方向から見て貫通しない構成としたことにより、冷却風の送風経路を拡大し、冷却性能を十分に確保することができ、ケース内の温度上昇の影響による温度検知性能の低下を防ぐことができる。また、また、赤外線センサを通る送風経路は蛇行するため、電気的なノイズ、埃や外乱光の進入による赤外線センサの温度検知性能の低下を防ぐことができる。   In the fourth invention, in particular, an opening such as a hole or a notch is provided in the side walls of both the case A and the case B of the first or second invention, and the openings and the gaps penetrate each other when viewed from the side wall vertical direction. By adopting such a configuration, it is possible to expand the air flow path of the cooling air, sufficiently ensure the cooling performance, and prevent the temperature detection performance from being lowered due to the temperature rise in the case. In addition, since the air blowing path passing through the infrared sensor meanders, it is possible to prevent the temperature detection performance of the infrared sensor from deteriorating due to the entry of electrical noise, dust, or ambient light.

第５の発明は、特に、第１から第４の発明のいずれか１つの発明のケースＢの平面部に開口を設け、かつ前記開口をケースＡの側壁とケースＢの側壁の間に位置するように設けた構成としたことにより平面部への送風経路を確保し、冷却性能を向上させ、ケース内の温度上昇の影響による温度検知性能の低下を防ぐことができる。また、赤外線センサを通る送風経路は蛇行するため、電気的なノイズ、埃や外乱光の進入による赤外線センサの温度検知性能の低下を防ぐことができる。   In the fifth invention, in particular, an opening is provided in the flat portion of the case B of any one of the first to fourth inventions, and the opening is located between the side wall of the case A and the side wall of the case B. By adopting such a configuration, it is possible to secure a ventilation path to the flat portion, improve the cooling performance, and prevent the temperature detection performance from being lowered due to the temperature rise in the case. Moreover, since the ventilation path | route which passes along an infrared sensor meanders, the fall of the temperature detection performance of an infrared sensor by the approach of an electrical noise, dust, and disturbance light can be prevented.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

（実施の形態１）
図１は本発明の実施の形態１における誘導加熱調理器の断面図、図２は本発明の実施の形態１における赤外線センサユニットの分解斜視図、図３は本発明の実施の形態１における赤外線センサユニットの正面図および断面図である。 (Embodiment 1)
1 is a cross-sectional view of an induction heating cooker according to Embodiment 1 of the present invention, FIG. 2 is an exploded perspective view of an infrared sensor unit according to Embodiment 1 of the present invention, and FIG. 3 is an infrared ray according to Embodiment 1 of the present invention. It is the front view and sectional drawing of a sensor unit.

図１において本実施の形態における誘導加熱調理器は、トッププレート２１の上に載置された被加熱物２２を加熱する加熱コイル２３と、加熱コイル２３に高周波電流を供給するインバータ回路２７と、被加熱物から放射される赤外線を検出する赤外線センサユニット２４と、赤外線センサユニット２４の出力より被加熱物の温度を算出する温度算出手段２５と、温度算出手段２５の出力に応じてインバータ回路２７の出力を制御する制御手段２６と、外気を本体内に送風する冷却ファン２８とを有している。   In FIG. 1, the induction heating cooker in the present embodiment includes a heating coil 23 that heats an object 22 placed on a top plate 21, an inverter circuit 27 that supplies a high-frequency current to the heating coil 23, An infrared sensor unit 24 that detects infrared rays emitted from the object to be heated, a temperature calculation unit 25 that calculates the temperature of the object to be heated from the output of the infrared sensor unit 24, and an inverter circuit 27 according to the output of the temperature calculation unit 25 Control means 26 for controlling the output and a cooling fan 28 for blowing outside air into the main body.

図２の赤外線センサユニット２４において、ケースＡ１、ケースＢ２、赤外線センサ３である。また、同図において、発光体４、基板５、ビス６、ケースＡ１の平面部７、ケースＡ１の側壁８、ケースＢ２の平面部９、ケースＢ２の側壁１０、赤外線センサユニットの取付部１１である。   In the infrared sensor unit 24 of FIG. 2, the case A1, the case B2, and the infrared sensor 3 are included. In the same figure, the light emitter 4, the substrate 5, the screw 6, the flat surface portion 7 of the case A1, the side wall 8 of the case A1, the flat surface portion 9 of the case B2, the side wall 10 of the case B2, and the mounting portion 11 of the infrared sensor unit. is there.

また、図３の赤外線センサユニット２４において、側壁８と側壁１０の間の隙間１２である。   Further, in the infrared sensor unit 24 of FIG. 3, the gap 12 is between the side wall 8 and the side wall 10.

以上のように構成された誘導加熱調理器について、以下その動作、作用を説明する。   About the induction heating cooking appliance comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

インバータ回路２７から加熱コイル２３に高周波電流が供給されると、加熱コイル２３上方に載置された被加熱物２１が加熱される。被加熱物２１からは温度に応じた赤外線が放射されており、被加熱物２１から発した赤外線はトッププレート２２を透過して赤外線センサユニット２４に入力され、温度算出手段２５にて被加熱物２１の温度に換算される。また、冷却ファン２８により本体内に送風される冷却風によってインバータ回路２７や加熱コイル２３や赤外線センサユニット２４などが冷却され温度上昇による性能の低下を防止することができる。   When a high-frequency current is supplied from the inverter circuit 27 to the heating coil 23, the object to be heated 21 placed above the heating coil 23 is heated. Infrared light corresponding to the temperature is emitted from the object to be heated 21, and the infrared light emitted from the object to be heated 21 passes through the top plate 22 and is input to the infrared sensor unit 24. It is converted into a temperature of 21. Further, the inverter circuit 27, the heating coil 23, the infrared sensor unit 24, and the like are cooled by the cooling air blown into the main body by the cooling fan 28, so that a decrease in performance due to a temperature rise can be prevented.

そして、赤外線センサユニット２４は赤外線センサ３を設けた基板５と、アルミなどの導電性の金属材料により形成されたケースＡ１およびケースＢ２とで構成され、ケースＡ１とケースＢ２とで基板５を覆うように挟んでビス６で固定される。また、赤外線センサユニット２４は取付部１１を介して本体内に固定される。ここで、ケースＡ１は平面部７の端部を折り曲げて形成した側壁８を有し、ケースＢ２はケースＡ１の平面部７より大なる平面部９の端部を折り曲げて形成した側壁１０を有する。これによって、相互の側壁間に隙間１２を設けた構成としている。   The infrared sensor unit 24 includes a substrate 5 on which the infrared sensor 3 is provided, and a case A1 and a case B2 formed of a conductive metal material such as aluminum. The case A1 and the case B2 cover the substrate 5. And fixed with screws 6. Further, the infrared sensor unit 24 is fixed in the main body via the attachment portion 11. Here, the case A1 has a side wall 8 formed by bending the end portion of the flat portion 7, and the case B2 has a side wall 10 formed by bending the end portion of the flat portion 9 larger than the flat portion 7 of the case A1. . Thus, the gap 12 is provided between the side walls.

以上より、図３の矢印で示すように冷却ファン２８からの冷却風を隙間１２に送風することにより、赤外線センサユニット２４を十分に冷却することができ、ケース内の温度上昇の影響による温度検知性能の低下を防ぐことができる。また、冷却風は赤外線センサ３に直接送風することがなく、ケースに貫通穴がないので、埃や外乱光の進入による赤外線センサの温度検知性能の低下を防ぐことができる。また、電気的なノイズの影響も低減でき、温度検知性能の低下を防ぐことができる。   As described above, the infrared sensor unit 24 can be sufficiently cooled by blowing the cooling air from the cooling fan 28 to the gap 12 as shown by the arrows in FIG. 3, and the temperature detection due to the temperature rise in the case Performance degradation can be prevented. In addition, the cooling air does not blow directly to the infrared sensor 3 and the case does not have a through hole, so that it is possible to prevent the temperature detection performance of the infrared sensor from deteriorating due to the entrance of dust or ambient light. In addition, the influence of electrical noise can be reduced, and a decrease in temperature detection performance can be prevented.

（実施の形態２）
図４は本発明の実施の形態２における赤外線センサユニットの正面図および断面図である。尚、実施の形態１と基本構成は同じであるため説明は省略する。ケースＡ１の側壁８の端部とケースＢ２の平面部９との間に隙間１３を設けた構成としたことにより、図４の矢印で示すようにケースＡ１内に冷却風を送風することができ、直接赤外線センサ３を冷却することができる。これにより赤外線センサの温度上昇の影響による温度検知性能の低下を防ぐことができる。また、赤外線センサを通る送風経路は、隙間１３が赤外線センサ３より下側に位置することにより蛇行するためノイズや埃や外乱光が進入し難くなり従来の貫通孔形状とは異なり、電気的なノイズ、埃や外乱光の進入による赤外線センサの温度検知性能の低下を防ぐことができる。 (Embodiment 2)
FIG. 4 is a front view and a sectional view of the infrared sensor unit according to Embodiment 2 of the present invention. Since the basic configuration is the same as that of the first embodiment, the description is omitted. Since the gap 13 is provided between the end portion of the side wall 8 of the case A1 and the flat portion 9 of the case B2, the cooling air can be blown into the case A1 as shown by the arrow in FIG. The infrared sensor 3 can be directly cooled. Thereby, the fall of the temperature detection performance by the influence of the temperature rise of an infrared sensor can be prevented. Also, the air flow path passing through the infrared sensor meanders because the gap 13 is located below the infrared sensor 3, so that noise, dust and disturbance light are difficult to enter, and unlike the conventional through hole shape, It is possible to prevent the temperature detection performance of the infrared sensor from deteriorating due to the entry of noise, dust, or ambient light.

（実施の形態３）
図５、図６は本発明の実施の形態３における赤外線センサユニットの斜視図である。尚、実施の形態１と基本構成は同じであるため説明は省略する。実施の形態１または２に加えて、図５においてはケースＡ１の側壁８に、図６においてはケースＢ２の側壁１０に穴または切り欠きなどの開口１４および１５を設けた構成としたことにより、図５、図６の矢印で示すように冷却風の送風経路を拡大し、冷却性能を十分に確保することができ、ケース内の温度上昇の影響による温度検知性能の低下を防ぐことができる。また、このとき赤外線センサを通る送風経路は、図５においてケースＢ２の側壁には開口１５を設けていないこと、あるいは図６においてケースＡ１の側壁には開口１４を設けていないことにより貫通孔にはならず蛇行するためノイズや埃や外乱光が進入し難くなり従来の貫通孔形状とは異なり、電気的なノイズ、埃や外乱光の進入による赤外線センサの温度検知性能の低下を防ぐことができる。 (Embodiment 3)
5 and 6 are perspective views of the infrared sensor unit according to Embodiment 3 of the present invention. Since the basic configuration is the same as that of the first embodiment, the description is omitted. In addition to the first or second embodiment, the configuration in which openings 14 and 15 such as holes or notches are provided in the side wall 8 of the case A1 in FIG. 5 and the side wall 10 of the case B2 in FIG. As shown by the arrows in FIGS. 5 and 6, the cooling air blowing path can be expanded to ensure sufficient cooling performance, and the temperature detection performance can be prevented from deteriorating due to the temperature rise in the case. Further, at this time, the ventilation path passing through the infrared sensor is formed in the through hole by not providing the opening 15 on the side wall of the case B2 in FIG. 5 or not providing the opening 14 on the side wall of the case A1 in FIG. Unlike conventional through-hole shapes, noise, dust, and ambient light are less likely to enter due to meandering, preventing the deterioration of the temperature detection performance of the infrared sensor due to the entrance of electrical noise, dust, or ambient light. it can.

（実施の形態４）
図７は本発明の実施の形態４における赤外線センサユニットの斜視図および正面図および側面図および断面図である。尚、実施の形態１と基本構成は同じであるため説明は省略する。実施の形態１または２に加えて、ケースＡ１の側壁８およびケースＢ２の側壁１０の両方に穴または切り欠きなどの開口１４、１５を設け、かつ互いの開口１４、１５およびケースＡ１の側壁８の端部とケースＢ２の平面部９との間の隙間１３が側壁垂直方向から見て貫通しない構成としたことにより、図７の矢印で示すように冷却風の送風経路を更に拡大し、冷却性能を十分に確保することができ、ケース内の温度上昇の影響による温度検知性能の低下を防ぐことができる。また、赤外線センサを通る送風経路は、それぞれの開口や隙間が貫通しない構成としたことにより蛇行するためノイズや埃や外乱光が進入し難くなり従来の貫通孔形状とは異なり、電気的なノイズ、埃や外乱光の進入による赤外線センサの温度検知性能の低下を防ぐことができる。 (Embodiment 4)
FIG. 7 is a perspective view, a front view, a side view, and a cross-sectional view of the infrared sensor unit according to Embodiment 4 of the present invention. Since the basic configuration is the same as that of the first embodiment, the description is omitted. In addition to the first or second embodiment, openings 14 and 15 such as holes or notches are provided in both the side wall 8 of the case A1 and the side wall 10 of the case B2, and the respective openings 14 and 15 and the side wall 8 of the case A1 are provided. As shown by the arrows in FIG. 7, the cooling air blowing path is further expanded and the cooling 13 is not penetrated when viewed from the side wall vertical direction. A sufficient performance can be ensured, and a decrease in temperature detection performance due to the effect of a temperature rise in the case can be prevented. In addition, the air flow path through the infrared sensor meanders due to the configuration in which the openings and gaps do not penetrate, so noise, dust and disturbance light are difficult to enter, and unlike conventional through hole shapes, electrical noise In addition, it is possible to prevent the temperature detection performance of the infrared sensor from deteriorating due to the entry of dust and ambient light.

（実施の形態５）
図８は実施の形態５における赤外線センサユニットの斜視図および正面図である。尚、実施の形態１と基本構成は同じであるため説明は省略する。実施の形態１から４のいずれかに加えて、ケースＢ２の平面部９に開口１６を設け、かつ開口１６をケースＡ１の側壁８とケースＢ２の側壁１０の間に位置するように設けた構成としたことにより、図８の矢印で示すように光センサユニット２４の裏面からの送風経路を確保し、冷却性能を向上させ、ケース内の温度上昇の影響による温度検知性能の低下を防ぐことができる。また、赤外線センサを通る送風経路は、開口１６が側壁８と垂直の位置関係にあることにより蛇行するためノイズや埃や外乱光が進入し難くなり従来の貫通孔形状とは異なり、電気的なノイズ、埃や外乱光の進入による赤外線センサの温度検知性能の低下を防ぐことができる。 (Embodiment 5)
FIG. 8 is a perspective view and a front view of the infrared sensor unit in the fifth embodiment. Since the basic configuration is the same as that of the first embodiment, the description is omitted. In addition to any of the first to fourth embodiments, the opening 16 is provided in the flat portion 9 of the case B2, and the opening 16 is provided between the side wall 8 of the case A1 and the side wall 10 of the case B2. As a result, as shown by the arrow in FIG. 8, the air flow path from the back surface of the optical sensor unit 24 is secured, the cooling performance is improved, and the deterioration of the temperature detection performance due to the temperature rise in the case is prevented. it can. Also, the air flow path through the infrared sensor meanders because the opening 16 is in a vertical positional relationship with the side wall 8, so that noise, dust, and disturbance light are difficult to enter, unlike the conventional through-hole shape. It is possible to prevent the temperature detection performance of the infrared sensor from deteriorating due to the entry of noise, dust, or ambient light.

以上のように、本発明の誘導加熱調理器の赤外線ユニットは、電気的なノイズ、埃や外乱光の進入による赤外線センサの温度検知性能の低下を防ぎ、かつ温度上昇の影響による
温度検知性能の低下を防ぐことができるので、赤外線ユニットを備える家庭用、業務用の加熱調理器等の用途に適用することができる。 As described above, the infrared unit of the induction heating cooker according to the present invention prevents deterioration of the temperature detection performance of the infrared sensor due to the entry of electrical noise, dust and ambient light, and the temperature detection performance due to the influence of the temperature rise. Since it can prevent a fall, it can apply to uses, such as a heating cooker for household use and business use provided with an infrared unit.

１ ケースＡ
２ ケースＢ
３ 赤外線センサ
５ 基板
６ ビス
７、９ 平面部
８、１０ 側壁
１１ 取付部
１２、１３ 隙間
１４、１５、１６ 開口
２１ 被加熱物
２２ トッププレート
２３ 加熱コイル
２４ 赤外線センサユニット
２５ 温度算出手段
２６ 制御手段
２７ インバータ回路
２８ 冷却ファン 1 Case A
2 Case B
DESCRIPTION OF SYMBOLS 3 Infrared sensor 5 Board | substrate 6 Screw 7, 9 Plane part 8, 10 Side wall 11 Mounting part 12, 13 Crevice 14, 15, 16 Opening 21 Heated object 22 Top plate 23 Heating coil 24 Infrared sensor unit 25 Temperature calculation means 26 Control means 27 Inverter circuit 28 Cooling fan

Claims (5)

被加熱物を誘導加熱する加熱コイルと、前記加熱コイルに高周波電流を供給するインバータ回路と、前記被加熱物から放射される赤外線を検出する赤外線センサユニットと、前記赤外線センサの出力より前記被加熱物の温度を算出する温度算出手段と、前記温度算出手段の出力に応じて前記インバータ回路の出力を制御する制御手段と、外気を本体内に送風する冷却ファンとを備え、前記赤外線センサユニットは赤外線センサと、平面部の端部を折り曲げて形成した側壁を有するケースＡと、前記ケースＡの平面部より大なる平面部の端部を折り曲げて形成した側壁を有するケースＢとで構成され、相互の側壁間に隙間を設けた構成とした誘導加熱調理器。 A heating coil that induction-heats the object to be heated, an inverter circuit that supplies a high-frequency current to the heating coil, an infrared sensor unit that detects infrared rays radiated from the object to be heated, and an output from the infrared sensor Temperature calculating means for calculating the temperature of the object, control means for controlling the output of the inverter circuit in accordance with the output of the temperature calculating means, and a cooling fan for blowing outside air into the main body, the infrared sensor unit is An infrared sensor, and a case A having a side wall formed by bending an end portion of a flat portion, and a case B having a side wall formed by bending an end portion of a flat portion larger than the flat portion of the case A, An induction heating cooker having a configuration in which a gap is provided between the side walls. ケースＡの側壁端部とケースＢの平面部の間に隙間を設けた構成とした請求項１に記載の誘導加熱調理器。 The induction heating cooker according to claim 1, wherein a gap is provided between a side wall end portion of the case A and a flat portion of the case B. ケースＡまたはケースＢのいずれか一方の側壁に穴または切り欠きなどの開口を設けた構成とした請求項１または２に記載の誘導加熱調理器。 The induction heating cooker according to claim 1 or 2, wherein an opening such as a hole or a notch is provided on a side wall of either case A or case B. ケースＡおよびケースＢの両方の側壁に穴または切り欠きなどの開口を設け、かつ互いの前記開口が側壁垂直方向から見て貫通しない構成とした請求項１または２に記載の誘導加熱調理器。 The induction heating cooker according to claim 1 or 2, wherein openings such as holes or notches are provided in both side walls of the case A and the case B, and the openings do not penetrate each other when viewed from the vertical direction of the side walls. ケースＢの平面部にあり、かつケースＡの側壁と前記ケースＢの側壁の間に位置するように開口を設けた構成とした請求項１〜４のいずれか１項に記載の誘導加熱調理器。 The induction heating cooker according to any one of claims 1 to 4, wherein an opening is provided in a flat portion of the case B so as to be positioned between the side wall of the case A and the side wall of the case B. .
JP2009260587A 2009-11-16 2009-11-16 Induction heating cooker Expired - Fee Related JP5549188B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013097935A (en) * 2011-10-31 2013-05-20 Hitachi Appliances Inc Induction heating cooker
JP2021015752A (en) * 2019-07-16 2021-02-12 三菱電機株式会社 Sensor unit and heating cooker

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5898511U (en) * 1981-12-25 1983-07-05 株式会社東芝 High frequency heating cooking device
JP2005302393A (en) * 2004-04-08 2005-10-27 Matsushita Electric Ind Co Ltd Induction heating cooking device
JP2008177177A (en) * 2008-04-10 2008-07-31 Matsushita Electric Ind Co Ltd Induction-heating cooking device
JP2008226573A (en) * 2007-03-12 2008-09-25 Matsushita Electric Ind Co Ltd Induction cooker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5898511U (en) * 1981-12-25 1983-07-05 株式会社東芝 High frequency heating cooking device
JP2005302393A (en) * 2004-04-08 2005-10-27 Matsushita Electric Ind Co Ltd Induction heating cooking device
JP2008226573A (en) * 2007-03-12 2008-09-25 Matsushita Electric Ind Co Ltd Induction cooker
JP2008177177A (en) * 2008-04-10 2008-07-31 Matsushita Electric Ind Co Ltd Induction-heating cooking device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013097935A (en) * 2011-10-31 2013-05-20 Hitachi Appliances Inc Induction heating cooker
JP2021015752A (en) * 2019-07-16 2021-02-12 三菱電機株式会社 Sensor unit and heating cooker

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