JPH04260724A - Heating and cooking device - Google Patents
Heating and cooking deviceInfo
- Publication number
- JPH04260724A JPH04260724A JP2317691A JP2317691A JPH04260724A JP H04260724 A JPH04260724 A JP H04260724A JP 2317691 A JP2317691 A JP 2317691A JP 2317691 A JP2317691 A JP 2317691A JP H04260724 A JPH04260724 A JP H04260724A
- Authority
- JP
- Japan
- Prior art keywords
- displacement
- magnet
- food
- elastic body
- weight
- 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.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 title claims description 30
- 238000010411 cooking Methods 0.000 title claims description 24
- 238000006073 displacement reaction Methods 0.000 claims abstract description 68
- 235000013305 food Nutrition 0.000 claims abstract description 52
- 239000004065 semiconductor Substances 0.000 claims abstract description 39
- 238000001514 detection method Methods 0.000 claims description 23
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 239000002131 composite material Substances 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 16
- 238000009434 installation Methods 0.000 description 12
- 230000003321 amplification Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 241000287828 Gallus gallus Species 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- Electric Ovens (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は被加熱食品を加熱調理す
る加熱調理装置に係り、特に、被加熱食品の重量を測定
し、その重量に応じた加熱時間、加熱出力、加熱パター
ン等を制御する加熱調理装置に関するものである。
【０００２】
【従来の技術】従来、加熱室内に収納された食品を加熱
して自動的に調理を行なう加熱調理装置は数多く実用化
され、特に電子レンジによるあたため調理以外に、電気
、ガスヒータによるローストチキン等のオーブン調理や
、焼魚等のグリル調理まで可能となり便利になって来て
いる。さらに食品の重量を自動計量し、その重量にもと
づいて加熱時間や加熱出力を決定し自動加熱して使い勝
手の向上が図られて来ている。なお、この種の加熱調理
装置として関連するものには、例えば重量センサとして
歪ゲージを用いた実公平１−４１０４５号が、食品の重
量センサとして磁石とホール素子とを用いた特開昭５９
−１２２３２号や特開昭５８−１６０７４２号が、重量
センサとして板バネ、磁石、ピックアップコイルを用い
た特開昭６１−１７０２３号や特開昭６１−３８３３０
号等が知られている。
【０００３】
【発明が解決しようとする課題】上述従来技術は、（１
）歪ゲージの抵抗変化量が微小であるため重量による信
号レベルが小さく、信号増幅率を大きくする必要があり
、ノイズの影響を受けやすい。（２）高精度な部品を使
用する必要があるためコストが高い。（３）組立、加工
時のばらつきの影響を受けやすい、という問題があった
。
【０００４】本発明の目的は、上記従来の欠点を解消し
、高精度な電子部品を用いることなく経済性の高い、さ
らに組立、加工時のばらつきの影響を受けにくい重量検
知部により、食品の重量を正確に検出し、良好な加熱調
理が可能な加熱調理装置を提供することにある。
【０００５】
【課題を解決するための手段】上述目的を達成するため
に、本発明の加熱調理装置は、食品を載置する載置台と
、この載置台を支持し食品の重量に対応した変位を生じ
る板バネからなる弾性体と、この弾性体の変位を検出す
る磁石と複数の半導体磁電変換素子とからなる検出部と
、この検出部の検出した変位から食品の重量を検出する
重量検出部と、この重量検出部の検出した重量に対応し
て食品を加熱するエネルギー発生手段の制御手段とを有
し、板バネからなる弾性体の変位検出部を以下の通り構
成する。すなわち、板バネの端部を固定し、支点とする
と共に、他方の端部に磁石を設置し、板バネの変位を磁
石の変位として複数の磁電変換素子により検出するか、
又は板バネの両端部を固定し、支点とすると共に、板バ
ネの中央近傍の変位に対応して変位する磁石を設けて板
バネの変位を磁石の変位として複数の半導体磁電変換素
子により検出するようにしたものである。
【０００６】更に、弾性体の変位を検出する検出部を、
弾性体の変位と連動して変位する磁石と、磁石の周囲に
近接しかつ変位方向に設置した複数の半導体磁電変換素
子と、半導体磁電変換素子の磁石を介して対称位置に設
置し複数の半導体磁電変換素子とで構成し、複数の半導
体磁電変換素子の感磁部間隔を、磁石の磁極間距離に等
しいか、もしくは大きくしたものである。
【０００７】
【作用】本発明において、食品を載置する載置台を支持
し、食品の重量に対応した変位を生じる板バネからなる
弾性体の変位を検出する検出部を板バネからなる弾性体
の変位に連動して変位する磁石と、磁石の周囲に近接し
かつ変位方向に設置した複数の半導体磁電変換素子とで
構成してある。そこで食品の重量による板バネからなる
弾性体の変位、すなわち、磁石の変位による複数の半導
体磁電変換素子の出力信号レベルが大きくとれ、信号増
幅率を大きくする必要がなく、ノイズの影響を受けにく
い。また、高精度な回路部品を使用する必要がなく、低
コスト化がはかれる。
【０００８】また、板バネからなる弾性体の変位と連動
して変位する磁石と、磁石の周囲に近接しかつ変位方向
に設置した複数の半導体磁電変換素子と、半導体磁電変
換素子の磁石を介して対称位置にも複数の半導体磁電変
換素子を設置し、さらに複数の半導体磁電変換素子の感
磁部間隔と磁石の磁極間隔とを特定し、組立、加工時の
磁石と磁電変換素子との設置誤差、作業ばらつきの影響
を受けにくく、精度の良い重量検出ができ、良好な加熱
調理ができる。
【０００９】
【実施例】以下本発明の一実施例を図１から図１０によ
り説明する。
【００１０】図１は本発明による加熱調理装置の構成図
であり、図２は加熱調理装置の重量検知部の一実施例の
詳細構成図である。１は加熱調理装置本体、２は食品、
３は食品２を収納する加熱室、４は食品２を高周波加熱
するための第１の熱エネルギー発生手段を構成する高周
波発振器、５、５Ａ、５Ｂは食品２をオーブン調理また
はグリル調理するためのガス又は電気ヒータからなる第
２の熱エネルギー発生手段（ガス又は電気ヒータ）、６
は食品２を載置する載置台、７は載置台６を支持するた
めの載置台支持ロッド、８は支持ロッド７に設置され載
置台６を回転させるための載置台回転用モータ、９は載
置台６を支持し食品２の重量に対応した変位を生じる複
数の板バネからなる弾性体、１０は弾性体９の端部を固
定し、支点とする支持部である。１１は弾性体１０の支
持部９と反対側端部に設けられた磁石、１２ａ、１２ｂ
、１２ｃ、１２ｄは磁石１１の周囲に近接し、設置部１
４、１４Ａに設置した複数の半導体磁電変換素子である
。すなわち、食品２の重量による弾性体９の変位を検出
するための検出部２８として磁石１１と複数の半導体磁
電変換素子１２ａ、１２ｂ、１２ｃ、１２ｄとで構成し
てある。１４は検出部２８の検出した変位から、食品２
の重量を検出するための重量検出部であり、１５は検出
した食品２の重量に対応して第１の熱エネルギー発生手
段（高周波発振器）４または第２の熱エネルギー発生手
段５、５Ａ、５Ｂを制御し自動調理を行うための制御手
段であり、マイクロコンピュータ（図示せず）とスイッ
チング手段（図示せず）とで構成される。１３は弾性体
９の最大変位を規制するための弾性体強制停止部である
。１５は加熱調理装置の底部である。
【００１１】図３は本発明の加熱調理装置の重量検出部
１４の他の実施例の詳細構成図である。
【００１２】食品２を載置する載置台６を支持し、食品
２の重量に対応した変位を生じる板バネからなる弾性体
９の両端部を固定し、支点とする支持部１０、１０Ａを
設け、弾性体９の中央近傍の変位に対応して変位する磁
石１１を設け、板バネからなる弾性体９の変位を磁石１
１の変位として検出するために、磁石１１の周囲近傍に
複数の半導体磁電変換素子１２ａ、１２ｂ、１２ｃ、１
２ｄを設置した設置部を設けてある。１３ａ、１３ｂは
弾性体９の最大変化を規制するための弾性体強制停止部
である。
【００１３】図４は半導体磁電変換素子として用いたホ
ール素子の動作説明図であり、図５はホール素子の特性
図である。
【００１４】ホール素子１２は入力端子１６、１６Ａに
一定の制御電流Ｉｃを流して磁界Ｂを与えると、出力端
子１７、１７Ａ間にホール出力電圧（ＶＨ＝Ｋ・Ｉｃ・
Ｂ）が生じ、図５に示すように磁束密度に比例したホー
ル出力電圧が得られる。よって、磁石の変位を出力端子
１７、１７Ａ間に発生するホール電圧により検出するこ
とができる。
【００１５】図６は弾性体の変位を検出する検出部２８
を構成する磁石と複数の半導体磁電変換素子の配置を示
したものである。図７は食品２の重量と板バネからなる
弾性体の変位の関係を示す特性図、図８（ａ）、（ｂ）
は板バネの変位とホール出力電圧の関係を示す特性図で
ある。
【００１６】図６において、複数の半導体磁電変換素子
の感磁部間隔Ｄを、磁石１１の磁極間距離Ｌに等しいか
、もしくは大きくすることが必要である。例えば２つの
ホール素子１２ａ、１２ｂを用い、感磁部間隔Ｄより小
さい磁極間距離Ｌを持つ磁石１１が、ホール素子１２ａ
と１２ｂの間に位置している時から、ホール素子１２ｂ
の各ホール素子の出力電圧は図８（ａ）の特性２０、及
び２１となる。ここでホール素子１２ａの出力電圧と１
２ｂの出力電圧との出力電圧差（合成出力電圧）を求め
ると図８（ｂ）となり、磁石１１の変位によるホール素
子出力電圧の感度が２倍となり、信号／雑音の比を大き
く取ることができる。
【００１７】図９は弾性体の変位を検出する検出部２８
を構成する磁石と複数の半導体磁電変換素子との配置を
示す他の実施例である。食品２の重量に応じて変位する
板バネからなる弾性体９の変位に対応して変位する磁石
１１の周囲近傍対称位置の設置部１４、１４Ａにホール
素子からなる半導体磁電変換素子１２ａ、１２ｃを設け
、さらに、ホール素子１２ａと１２ｃと磁石１１の変位
方向に距離（感磁部間隔）Ｄだけ離れた位置にホール素
子１２ｃ、１２ｄを設けてある。なお、磁石１１の磁極
間距離Ｌは、ホール素子の感磁部間隔Ｄに等しいか、も
しくは小さくすることが必要である。食品２の重量に対
応して変位する磁石１１の変位と、ホール素子１２ａと
１２ｃの出力電圧差（合成出力電圧）及びホール素子１
２ｃと１２ｄの出力電圧差（合成出力電圧）との特性を
図１０（ａ）の特性２３及び２４に示す。図１０（ｂ）
は、図１０（ａ）に示したホール素子１２ａと１２ｂの
合成出力電圧特性２３と、ホール素子１２ｃと１２ｄの
合成出力電圧特性２４とをさらに合成した特性と磁石１
１の変位との関係を示したものであり、磁石１１の変位
（食品２の重量に対応）によるホール素子出力電圧の感
度が４倍となる。図１０（ａ）に示す特性２５及び２６
は、磁石１１の設置位置がホール素子設置部１４と１４
Ａの中央からホール素子設置部１４側（ホール素子１２
ｃ、１２ｄ側）へずれて設置された場合のホール素子１
２ａと１２ｂの合成出力電圧、及びホール素子１２ｃと
１２ｄの合成出力電圧特性を示したものである。
すなわち、磁石１１とホール素子１２ａ、１２ｂとの間
隔が開き、磁石１１とホール素子１２ｃと１２ｄの間隔
が狭い状態で設置された場合のホール素子の合成出力電
圧特性であり、磁石１１の変位（食品２の重量に対応）
に対するホール素子出力電圧特性が大きく異なり、食品
２の重量検知は不可能となる。しかし、この時のホール
素子１２ａと１２ｂの合成出力電圧特性２５と、ホール
素子１２ｃと１２ｄの合成出力電圧特性２６との合成出
力電圧特性を求めると、図１０（ｂ）のホール素子出力
電圧特性２７と同一特性となる。
【００１８】すなわち、磁石１１とホール素子設置部１
４、１４Ａとの設置位置がずれて、ばらついたとしても
、磁石１１の周囲対称位置に一組のホール素子（１２ａ
と１２ｃ）を設置し、さらに磁石１１の変位方向で磁石
１１の磁極間距離Ｌに等しいか、又はそれより大きい間
隔（感磁部間隔）Ｄだけ離れた位置で、磁石１１の周囲
対称位置に他の一組のホール素子（１２ｂと１２ｄ）を
設置し、磁石１１の変位に応じて、４個のホール素子の
出力電圧の合成出力電圧を食品２の重量検知用信号とし
て用いることにより、外乱による雑音、設置位置ずれ等
の影響を防止することができる。
【００１９】
【発明の効果】本発明は、以上説明したように構成され
ているので以下に記載されるような効果を得ることがで
きる。
【００２０】（１）食品の重量による弾性体の変位を、
磁石の変位による複数の半導体磁電変換素子の出力信号
の和で計測するため、信号レベルが大きく、ノイズの影
響を受けにくく安定する。
【００２１】（２）高精度な部品を必要としないので、
安価である。
【００２２】（３）磁石の変位を磁石の周囲対称位置に
設置した複数の磁電変換素子で検知しているため、設置
作業ばらつき、設置誤差の影響を受けにくく、精度の良
い重量検出ができ、良好な加熱調理ができる。Detailed Description of the Invention [0001] The present invention relates to a heating cooking device for heating food to be heated, and in particular, it measures the weight of the food to be heated and heats the food according to the weight. The present invention relates to a heating cooking device that controls time, heating output, heating pattern, etc. [0002] Conventionally, many heating cooking devices that automatically cook food by heating food stored in a heating chamber have been put into practical use. It has become possible to cook chicken and other foods in the oven and grill fish and other foods, making it more convenient. Furthermore, convenience has been improved by automatically weighing the food, determining the heating time and heating output based on the weight, and automatically heating the food. In addition, related to this type of heating cooking apparatus, for example, Japanese Utility Model Publication No. 1-41045 uses a strain gauge as a weight sensor, and Japanese Patent Application Laid-Open No. 1-41045 uses a magnet and a Hall element as a food weight sensor.
-12232 and JP-A-58-160742, and JP-A-61-17023 and JP-A-61-38330 which use leaf springs, magnets, and pickup coils as weight sensors.
The number etc. are known. Problems to be Solved by the Invention The above-mentioned prior art has the following problems: (1)
) Since the resistance change of the strain gauge is minute, the signal level due to weight is small, the signal amplification factor needs to be increased, and it is easily affected by noise. (2) The cost is high because it is necessary to use high-precision parts. (3) There was a problem in that it was easily affected by variations during assembly and processing. An object of the present invention is to eliminate the above-mentioned conventional drawbacks, and to detect food by using a weight detection section that is highly economical without using high-precision electronic components, and is less susceptible to variations during assembly and processing. It is an object of the present invention to provide a heating cooking device that can accurately detect weight and perform good heating cooking. Means for Solving the Problems In order to achieve the above object, the heating cooking device of the present invention includes a mounting table on which food is placed, and a device that supports this mounting table and has a displacement corresponding to the weight of the food. an elastic body made of a leaf spring that generates an elastic body, a detection section made up of a magnet and a plurality of semiconductor magnetoelectric transducers that detect the displacement of this elastic body, and a weight detection section that detects the weight of food from the displacement detected by this detection section. and a control means for an energy generating means that heats the food according to the weight detected by the weight detecting section, and the displacement detecting section of the elastic body made of a plate spring is configured as follows. That is, one end of the leaf spring is fixed and used as a fulcrum, and a magnet is installed at the other end, and the displacement of the leaf spring is detected as the displacement of the magnet by a plurality of magnetoelectric conversion elements, or
Alternatively, both ends of the leaf spring are fixed and used as fulcrums, and a magnet is provided that is displaced in response to displacement near the center of the leaf spring, and the displacement of the leaf spring is detected as the displacement of the magnet by a plurality of semiconductor magnetoelectric conversion elements. This is how it was done. [0006] Furthermore, a detection section for detecting the displacement of the elastic body is provided.
A magnet that displaces in conjunction with the displacement of an elastic body, a plurality of semiconductor magnetoelectric transducers installed near the magnet in the displacement direction, and a plurality of semiconductor magnetoelectric transducers installed at symmetrical positions via the magnets of the semiconductor magnetoelectric transducers. The magnetoelectric transducer is configured with a plurality of semiconductor magnetoelectric transducers, and the spacing between the magnetically sensitive parts of the plurality of semiconductor magnetoelectric transducers is equal to or larger than the distance between the magnetic poles of the magnet. [0007] In the present invention, the detection section that supports the table on which the food is placed and detects the displacement of the elastic body made of a plate spring that generates a displacement corresponding to the weight of the food is an elastic body made of a plate spring. It is composed of a magnet that is displaced in conjunction with the displacement of the magnet, and a plurality of semiconductor magnetoelectric transducers that are disposed close to the magnet in the direction of displacement. Therefore, the output signal level of the multiple semiconductor magnetoelectric transducers can be increased due to the displacement of the elastic body made of a leaf spring due to the weight of the food, that is, the displacement of the magnet, there is no need to increase the signal amplification factor, and it is less susceptible to noise. . Furthermore, there is no need to use high-precision circuit components, and costs can be reduced. [0008] Furthermore, a magnet that is displaced in conjunction with the displacement of an elastic body made of a leaf spring, a plurality of semiconductor magnetoelectric transducers installed close to the magnet in the direction of displacement, and a magnet of the semiconductor magnetoelectric transducer A plurality of semiconductor magnetoelectric transducers are also installed in symmetrical positions, and the spacing between the magnetic sensing parts of the plurality of semiconductor magnetoelectric transducers and the magnetic pole spacing of the magnet is specified, and the installation of the magnet and magnetoelectric transducer during assembly and processing is performed. It is less susceptible to errors and work variations, allows for highly accurate weight detection, and allows for good heating and cooking. [Embodiment] An embodiment of the present invention will be explained below with reference to FIGS. 1 to 10. FIG. 1 is a block diagram of a heating cooking apparatus according to the present invention, and FIG. 2 is a detailed block diagram of an embodiment of a weight detecting section of the heating cooking apparatus. 1 is the heating cooking device body, 2 is the food,
3 is a heating chamber for storing the food 2; 4 is a high-frequency oscillator constituting a first thermal energy generating means for high-frequency heating the food 2; and 5, 5A, and 5B are for cooking the food 2 in an oven or on a grill. a second thermal energy generating means (gas or electric heater) consisting of a gas or electric heater, 6
7 is a table support rod for supporting the food 2, 8 is a table rotation motor installed on the support rod 7 to rotate the table 6, and 9 is a table 6. An elastic body 10 is made up of a plurality of leaf springs that supports the table 6 and generates a displacement corresponding to the weight of the food 2. Reference numeral 10 is a support part that fixes the end of the elastic body 9 and uses it as a fulcrum. 11 is a magnet provided at the end of the elastic body 10 opposite to the support portion 9; 12a, 12b;
, 12c, 12d are close to the periphery of the magnet 11, and are located in the installation part 1.
This is a plurality of semiconductor magnetoelectric conversion elements installed at 4 and 14A. That is, the detection section 28 for detecting the displacement of the elastic body 9 due to the weight of the food 2 is composed of the magnet 11 and a plurality of semiconductor magnetoelectric transducers 12a, 12b, 12c, and 12d. 14 indicates the food 2 based on the displacement detected by the detection unit 28.
15 is a weight detection unit for detecting the weight of the food 2, and 15 is a first thermal energy generating means (high frequency oscillator) 4 or a second thermal energy generating means 5, 5A, 5B corresponding to the detected weight of the food 2. It is a control means for controlling the cooking process and automatically cooking, and is composed of a microcomputer (not shown) and a switching means (not shown). Reference numeral 13 denotes an elastic body forced stop portion for regulating the maximum displacement of the elastic body 9. 15 is the bottom of the cooking device. FIG. 3 is a detailed configuration diagram of another embodiment of the weight detecting section 14 of the heating cooking apparatus of the present invention. [0012] Support parts 10 and 10A are provided to support the placing table 6 on which the food 2 is placed, and to fix both ends of an elastic body 9 made of a leaf spring that causes displacement corresponding to the weight of the food 2, and to serve as a fulcrum. , a magnet 11 is provided which is displaced in response to the displacement near the center of the elastic body 9, and the displacement of the elastic body 9 made of a leaf spring is detected by the magnet 1.
In order to detect the displacement of 1, a plurality of semiconductor magnetoelectric transducers 12a, 12b, 12c, 1
There is an installation section where 2d is installed. Elastic body forced stop parts 13a and 13b are for regulating the maximum change of the elastic body 9. FIG. 4 is an explanatory diagram of the operation of a Hall element used as a semiconductor magnetoelectric conversion element, and FIG. 5 is a characteristic diagram of the Hall element. When the Hall element 12 applies a magnetic field B by flowing a constant control current Ic to the input terminals 16 and 16A, a Hall output voltage (VH=K·Ic·
B) occurs, and a Hall output voltage proportional to the magnetic flux density is obtained as shown in FIG. Therefore, the displacement of the magnet can be detected by the Hall voltage generated between the output terminals 17 and 17A. FIG. 6 shows a detection section 28 for detecting the displacement of the elastic body.
This figure shows the arrangement of magnets and a plurality of semiconductor magnetoelectric transducers that make up the structure. FIG. 7 is a characteristic diagram showing the relationship between the weight of food 2 and the displacement of the elastic body made of a leaf spring, and FIGS. 8(a) and (b)
is a characteristic diagram showing the relationship between the displacement of the leaf spring and the Hall output voltage. In FIG. 6, it is necessary that the distance D between the magnetically sensitive parts of the plurality of semiconductor magnetoelectric transducers be equal to or larger than the distance L between the magnetic poles of the magnet 11. For example, if two Hall elements 12a and 12b are used, and the magnet 11 has a distance L between magnetic poles that is smaller than the magnetic sensing part interval D, the Hall element 12a
and 12b, the Hall element 12b
The output voltage of each Hall element has characteristics 20 and 21 in FIG. 8(a). Here, the output voltage of the Hall element 12a and 1
When the output voltage difference (combined output voltage) with the output voltage of 2b is calculated, it becomes as shown in FIG. 8(b), and the sensitivity of the Hall element output voltage due to the displacement of the magnet 11 is doubled, making it possible to obtain a large signal/noise ratio. can. FIG. 9 shows a detection section 28 for detecting the displacement of the elastic body.
This is another example showing the arrangement of a magnet and a plurality of semiconductor magnetoelectric conversion elements. Semiconductor magnetoelectric transducers 12a and 12c made of Hall elements are installed in installation parts 14 and 14A at symmetrical positions near the periphery of the magnet 11, which is displaced in response to the displacement of an elastic body 9 made of a leaf spring that is displaced in accordance with the weight of the food 2. Furthermore, Hall elements 12c and 12d are provided at positions separated by a distance (magnetic sensing part interval) D from the Hall elements 12a and 12c in the direction of displacement of the magnet 11. Note that the distance L between the magnetic poles of the magnet 11 needs to be equal to or smaller than the distance D between the magnetically sensitive parts of the Hall element. The displacement of the magnet 11 that is displaced in response to the weight of the food 2, the output voltage difference between the Hall elements 12a and 12c (combined output voltage), and the Hall element 1
The characteristics of the output voltage difference (combined output voltage) between 2c and 12d are shown in characteristics 23 and 24 in FIG. 10(a). Figure 10(b)
is the characteristic obtained by further combining the composite output voltage characteristic 23 of Hall elements 12a and 12b shown in FIG. 10(a) and the composite output voltage characteristic 24 of Hall elements 12c and 12d, and the magnet 1.
1, and the sensitivity of the Hall element output voltage due to the displacement of the magnet 11 (corresponding to the weight of the food 2) increases four times. Characteristics 25 and 26 shown in FIG. 10(a)
, the installation position of the magnet 11 is the Hall element installation part 14 and 14
From the center of A to the Hall element installation part 14 side (Hall element 12
Hall element 1 when installed shifted to side c, 12d)
The combined output voltage characteristics of Hall elements 2a and 12b and the combined output voltage of Hall elements 12c and 12d are shown. In other words, this is the combined output voltage characteristic of the Hall element when the distance between the magnet 11 and the Hall elements 12a and 12b is wide, and the distance between the magnet 11 and the Hall elements 12c and 12d is narrow, and the displacement of the magnet 11 ( (corresponds to the weight of food 2)
Since the Hall element output voltage characteristics differ greatly between the two, it becomes impossible to detect the weight of the food 2. However, when the combined output voltage characteristic 25 of the Hall elements 12a and 12b and the combined output voltage characteristic 26 of the Hall elements 12c and 12d are determined at this time, the Hall element output voltage characteristic shown in FIG. 10(b) is obtained. It has the same characteristics as 27. That is, the magnet 11 and the Hall element installation part 1
Even if the installation positions with 4 and 14A are shifted and vary, a set of Hall elements (12a
and 12c) at a symmetrical position around the magnet 11 at a distance D that is equal to or larger than the distance L between the magnetic poles of the magnet 11 in the displacement direction of the magnet 11. By installing another set of Hall elements (12b and 12d) and using the composite output voltage of the output voltages of the four Hall elements as a signal for detecting the weight of the food 2, depending on the displacement of the magnet 11, disturbances can be detected. It is possible to prevent the effects of noise, misalignment of installation position, etc. [0019] Since the present invention is constructed as described above, it is possible to obtain the effects described below. (1) The displacement of the elastic body due to the weight of the food is
Since the measurement is performed using the sum of the output signals of multiple semiconductor magnetoelectric transducers caused by the displacement of the magnet, the signal level is high and stable and is not easily affected by noise. (2) Since high precision parts are not required,
It's cheap. (3) Since the displacement of the magnet is detected by a plurality of magnetoelectric transducers installed at symmetrical positions around the magnet, it is less susceptible to installation work variations and installation errors, and highly accurate weight detection is possible. Can be cooked well.
【図１】一実施例の構造図である。FIG. 1 is a structural diagram of one embodiment.
【図２】同じく重量検知部の詳細構成図である。FIG. 2 is a detailed configuration diagram of the weight detection section.
【図３】重量検知部の他の実施例の詳細構成である。FIG. 3 is a detailed configuration of another embodiment of the weight detection section.
【図４】一実施例の半導体磁電変換素子の動作説明図で
ある。FIG. 4 is an explanatory diagram of the operation of the semiconductor magnetoelectric conversion element of one embodiment.
【図５】同じく半導体磁電変換素子の特性説明図である
。FIG. 5 is a characteristic explanatory diagram of the semiconductor magnetoelectric conversion element.
【図６】同じく磁石と半導体磁電変換素子の配置を示す
配置図である。FIG. 6 is a layout diagram showing the arrangement of magnets and semiconductor magnetoelectric conversion elements.
【図７】同じく食品重量と変位の関係を示す特性図であ
る。FIG. 7 is a characteristic diagram showing the relationship between food weight and displacement.
【図８】同じく変位とホール素子出力電圧との関係を示
す特性図である。FIG. 8 is a characteristic diagram showing the relationship between displacement and Hall element output voltage.
【図９】同じく磁石と半導体磁電変換素子の配置を示す
配置図である。FIG. 9 is a layout diagram showing the arrangement of magnets and semiconductor magnetoelectric conversion elements.
【図１０】同じく変位とホール素子出力電圧との関係を
示す特性図である。FIG. 10 is a characteristic diagram showing the relationship between displacement and Hall element output voltage.
１ 食品
９ 弾性体
１０ 弾性体支持部
１１ 磁石
１２ａ、１２ｂ、１２ｃ、１２ｄ 半導体磁電変換素
子２８ 検出部
Ｌ 磁極間距離（感磁部間隔）
Ｄ 素子間隔1 Food 9 Elastic body 10 Elastic body support part 11 Magnet 12a, 12b, 12c, 12d Semiconductor magnetoelectric conversion element 28 Detection part L Distance between magnetic poles (magnetically sensitive part interval) D Element interval
Claims (6)
を支持し食品の重量に対応した変位を生じる弾性体と、
この弾性体の変位を検出する検出部と、この検出部の検
出した変位から食品の重量を検出する重量検出部と、こ
の重量検出部の検出した重量に対応して食品を加熱する
エネルギー発生手段の制御手段とを有し、前記弾性体の
変位を検出するための検出部を磁石と複数の半導体磁電
変換素子とで構成してなることを特徴とする加熱調理装
置。[Claim 1] A mounting table on which food is placed; an elastic body that supports this mounting table and generates a displacement corresponding to the weight of the food;
A detection section that detects the displacement of this elastic body, a weight detection section that detects the weight of food from the displacement detected by this detection section, and an energy generation means that heats the food according to the weight detected by this weight detection section. 1. A heating cooking apparatus comprising: a control means, and a detection section for detecting displacement of the elastic body is composed of a magnet and a plurality of semiconductor magnetoelectric conversion elements.
食品の重量に対応した変位を生じる弾性体を複数の板バ
ネで構成し、この板バネの端部を固定して支点とすると
ともに他方の端部に磁石を設置した板バネの変位を磁石
の変位として複数の半導体磁電変換素子により検出する
ことを特徴とする請求項１記載の加熱調理装置。[Claim 2] An elastic body that supports the table on which the food is placed and also causes displacement corresponding to the weight of the food is composed of a plurality of leaf springs, and the ends of the leaf springs are fixed and used as a fulcrum. 2. The heating cooking apparatus according to claim 1, wherein displacement of a leaf spring having a magnet installed at the other end thereof is detected as displacement of the magnet by a plurality of semiconductor magnetoelectric conversion elements.
食品の重量に対応した変位を生じる弾性体を板バネで構
成し、この板バネの両端部を固定して支点とするととも
にこの板バネの中央近傍の変位に対応して変位する磁石
を設け、前記板バネの変位を磁石の変位として複数の半
導体磁電変換素子により検出することを特徴とする請求
項１記載の加熱調理装置。[Claim 3] An elastic body that supports the table on which the food is placed and also causes displacement corresponding to the weight of the food is composed of a leaf spring, and both ends of the leaf spring are fixed to serve as a fulcrum, and the plate 2. The heating cooking apparatus according to claim 1, further comprising a magnet that is displaced in response to displacement near the center of the spring, and a plurality of semiconductor magnetoelectric transducers detect displacement of the leaf spring as displacement of the magnet.
食品の重量に対応した変位を生じる弾性体の変位を検出
するその弾性体の変位に連動して変位する磁石とこの磁
石の周囲に近接させかつ変位方向に設置した複数の半導
体磁電変換素子とで構成してなることを特徴とする請求
項１、２および３記載の加熱調理装置。4. A magnet that supports a table on which the food is placed, and also detects the displacement of an elastic body that causes a displacement corresponding to the weight of the food, and that moves in conjunction with the displacement of the elastic body, and a magnet that moves around the magnet. 4. The heating cooking device according to claim 1, comprising a plurality of semiconductor magnetoelectric transducers placed close to each other in a displacement direction.
の弾性体の変位と連動して変位する磁石とこの磁石の周
囲に近接させかつ変位方向に設置した複数の半導体磁電
変換素子とこれら半導体磁電変換素子の前記磁石を介し
た対称位置に設置した複数の半導体磁電変換素子とから
構成してなることを特徴とする請求項１、２および３記
載の加熱調理装置。5. A detection unit for detecting the displacement of an elastic body is provided with a magnet that is displaced in conjunction with the displacement of the elastic body, a plurality of semiconductor magnetoelectric transducers installed close to the periphery of the magnet and in the displacement direction, and these elements. 4. The heating cooking apparatus according to claim 1, comprising a plurality of semiconductor magnetoelectric transducers installed at symmetrical positions with respect to the magnet of a semiconductor magnetoelectric transducer.
する磁石と複数の半導体磁電変換素子の配置として、複
数の半導体磁電変換素子の感磁部間隔を、前記磁石の磁
極間距離に等しいか、もしくは大きくしたことを特徴と
する請求項４および５記載の加熱調理装置。6. The arrangement of the magnets and the plurality of semiconductor magnetoelectric transducers constituting the detection section for detecting the displacement of the elastic body is such that the spacing between the magnetic sensing parts of the plurality of semiconductor magnetoelectric transducers is equal to the distance between the magnetic poles of the magnets. 6. The heating cooking device according to claim 4, wherein the heating cooking device is made larger or larger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2317691A JPH04260724A (en) | 1991-02-18 | 1991-02-18 | Heating and cooking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2317691A JPH04260724A (en) | 1991-02-18 | 1991-02-18 | Heating and cooking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04260724A true JPH04260724A (en) | 1992-09-16 |
Family
ID=12103328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2317691A Pending JPH04260724A (en) | 1991-02-18 | 1991-02-18 | Heating and cooking device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04260724A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010195436A (en) * | 2009-02-26 | 2010-09-09 | Elquest Corp | Dispensing/packing machine |
-
1991
- 1991-02-18 JP JP2317691A patent/JPH04260724A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010195436A (en) * | 2009-02-26 | 2010-09-09 | Elquest Corp | Dispensing/packing machine |
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