JPH05157252A - Heating cooking apparatus - Google Patents

Heating cooking apparatus

Info

Publication number
JPH05157252A
JPH05157252A JP32580991A JP32580991A JPH05157252A JP H05157252 A JPH05157252 A JP H05157252A JP 32580991 A JP32580991 A JP 32580991A JP 32580991 A JP32580991 A JP 32580991A JP H05157252 A JPH05157252 A JP H05157252A
Authority
JP
Japan
Prior art keywords
catalyst
cooking
heater
air
refrigerator
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
Application number
JP32580991A
Other languages
Japanese (ja)
Inventor
Toru Kubota
亨 久保田
Machiko Yukitani
まち子 行谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP32580991A priority Critical patent/JPH05157252A/en
Publication of JPH05157252A publication Critical patent/JPH05157252A/en
Pending legal-status Critical Current

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  • Electric Stoves And Ranges (AREA)

Abstract

PURPOSE:To eliminate damage of an external appearance and taste by installing a heat generator for heating a material to be cooked in which an infrared ray permeable deodorizing catalyst is carried on its surface on a ceiling of a cooking chamber. CONSTITUTION:When a catalyst carrying heater 10 of a ceiling of a cooking chamber 2 is energized at the time of heating to cook, a deodorizing catalyst carried on its surface is simultaneously heated and activated for a short time. Simultaneously, a fan 17 is so rotated to agitate the air in the chamber 2 as to become 0.5-3m/sec of an air speed at a position of the heater 10. Thus, a contact frequency of the catalyst with the air in the chamber 2 is increased, offensive odor (acetaldehyde) contained in the air in the chamber 3 is efficiently decomposed to be deodorized, and its temperature is made uniform to prevent an irregularity in heating. Thus, an external appearance and taste of a material 7 to be cooked are not impaired.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、食品を加熱調理する、
例えば家庭用オーブングリルレンジ等の加熱調理装置に
関し、特にその脱臭機能に関するものである。
BACKGROUND OF THE INVENTION The present invention relates to cooking food by heating.
For example, the present invention relates to a heating and cooking device such as a household oven grill range, and particularly to its deodorizing function.

【0002】[0002]

【従来の技術】一般に、オーブングリルレンジ等では、
調理時に臭気や煙が発生する。最近の住宅は、密閉性が
良くこのような調理中に発生する臭気や煙は、使用者に
不快感を与えるだけでなく、部屋の壁や家具に臭気がこ
びりついてしまうということがあった。この臭気を除去
する方法として、オーブングリルレンジの送気ファンで
臭気を強制的に排気ダクトから送り出して、庫(調理
室)内に新鮮な空気を取り込み、庫内の臭気を除去する
ようにした方法がある。臭気は、排気ダクト中に置かれ
た加熱された脱臭触媒により酸化分解され、無臭化され
た臭気が外部に放出されるようになっている。臭気源は
庫内に置かれた調理加熱中の調理物や内壁に付着した油
や肉汁から発生するガスやミスト成分であるが、新鮮な
空気を送り込むことにより、指数的にその臭気濃度は減
少してゆく。この脱臭触媒としては、白金やパラジウム
などの貴金属触媒などを、ラセミックスハニカムやシリ
カペーパーコルゲートに担持させたものや、金属のフォ
ームに担持させたものがある。
2. Description of the Related Art Generally, in an oven grill range,
Odor and smoke are generated during cooking. In recent houses, the airtightness is good, and the odor and smoke generated during such cooking not only make the user uncomfortable, but sometimes the odor sticks to the walls and furniture of the room. As a method of removing this odor, the odor was forced out of the exhaust duct by the fan for the oven grill range, and fresh air was taken into the kitchen (cooking room) to remove the odor inside the kitchen. There is a way. The odor is oxidatively decomposed by the heated deodorization catalyst placed in the exhaust duct, and the deodorized odor is released to the outside. The odor sources are gas and mist components generated from the cooked food placed inside the cooking cabinet and the oil and meat juice adhering to the inner wall, but the odor concentration decreases exponentially by sending in fresh air. Do it. As the deodorizing catalyst, there are a catalyst in which a precious metal catalyst such as platinum or palladium is supported on a racemic honeycomb or a silica paper corrugate, or a catalyst supported on a metal foam.

【0003】また調理の際に問題となる臭気としては、
調理のときに発生する臭気のほかに、調理後庫内に残留
する臭気がある。これは量は少ないが濃度的には高く、
調理後臭気が残ると、次の調理をする際に、別の食品の
臭気が調理物に付いたりして、使用者に不快感を与えて
いる。
The odor which is a problem during cooking is
In addition to the odor generated during cooking, there is an odor remaining in the refrigerator after cooking. This is a small amount but high in concentration,
If the odor remains after cooking, the odor of another food may be attached to the food during the next cooking, which gives the user an unpleasant feeling.

【0004】従来、グリル調理のときは上述の機構によ
って脱臭され、調理は天井部にあるヒータによって食品
の上面からの赤外線の輻射加熱により行われる。またオ
ーブン調理は装置の背面等にある熱風循環用ファンによ
り、ヒータによって暖められた空気を庫内に循環させて
庫内を均一に加熱して調理する。よってオーブン調理時
は庫内の温度を素早く一定にすることが必要になる。こ
のため、オーブン調理の場合は、グリル調理のときに行
われる脱臭方式のように冷えた外気を庫内へ送り込み、
排気ダクトへ庫内の暖かい空気を送って脱臭することは
庫内が冷え、また均一加熱することができなくなるため
望ましくない。このためオーブン調理では一般にこのよ
うな排気ダクト中におかれた触媒により脱臭機能を働か
せることは困難であった。
Conventionally, during grill cooking, the above mechanism is used to deodorize, and cooking is performed by radiant heating of infrared rays from the upper surface of the food by a heater on the ceiling. In the case of oven cooking, the hot air circulation fan on the back of the apparatus or the like circulates the air warmed by the heater through the inside of the oven to uniformly heat the inside of the oven for cooking. Therefore, it is necessary to quickly keep the temperature inside the oven constant during cooking in the oven. For this reason, in the case of oven cooking, send cold outside air into the refrigerator like the deodorizing method used when grilling.
It is not desirable to send warm air in the refrigerator to the exhaust duct for deodorization because the inside of the refrigerator will cool and uniform heating will not be possible. Therefore, in oven cooking, it is generally difficult to activate the deodorizing function by the catalyst placed in such an exhaust duct.

【0005】しかしオーブンを用いた調理でも肉類や魚
類を使用する場合もあり、やはり脱臭されることが望ま
しい。このため庫内に脱臭触媒を設けることも考えられ
る。この場合脱臭効率は触媒と庫内空気の接触頻度によ
って決定されるため、脱臭効率をあげるためには庫内空
気を循環させる必要がある。ところで、このようなオー
ブン調理時は庫内空気の循環があるため高効率の脱臭が
可能である。しかし、グリル調理は一般に輻射加熱によ
る調理を行うため庫内空気の撹拌機構を備えていない。
このためグリル調理では、このように庫内に触媒を置く
方法では臭気がヒータ上の触媒に接触回数が少ないため
効率よく脱臭できなかった。そこでグリル調理のときに
もオーブン調理と同様にファンを回転させてもよいが、
通常のオーブンのファン風量では食品が乾燥し過ぎると
いう欠点があった。
However, there are cases where meat and fish are used even when cooking in an oven, and it is desirable to be deodorized. Therefore, it may be possible to provide a deodorizing catalyst in the refrigerator. In this case, since the deodorizing efficiency is determined by the contact frequency of the catalyst and the air in the refrigerator, it is necessary to circulate the air in the refrigerator in order to improve the deodorizing efficiency. By the way, during such oven cooking, since the air in the refrigerator is circulated, highly efficient deodorization is possible. However, since grill cooking is generally performed by radiant heating, it does not have a mechanism for agitating the air in the refrigerator.
Therefore, in grill cooking, the method of placing the catalyst in the refrigerator cannot efficiently deodorize the odor because the number of times the odor contacts the catalyst on the heater is small. Therefore, you can rotate the fan during grill cooking as well as in oven cooking.
There was a drawback that the food was too dry with a normal oven fan flow rate.

【0006】[0006]

【発明が解決しようとする課題】従来のオーブングリル
レンジのように、排気ダクト中に脱臭触媒を設置し、調
理中の臭気を除去するシステムが付いている機種では、
排気ダクトへ庫内空気を導入しないと脱臭されなかっ
た。このため庫内の臭気を含む空気はグリル使用時にの
み排気ダクト中の脱臭触媒で脱臭され、オーブン使用時
は庫内空気を排気ダクトへ送気しないので、臭気が庫内
に残ったままであった。また脱臭触媒を庫内に設ける方
法もあるが、効率よく脱臭を行うためには触媒を活性化
し、庫内空気と触媒の接触回数を増す必要がある。この
場合には一般にオーブン調理はファンが回転することが
多いため脱臭効率がよいが、グリル調理では庫内のファ
ンが停止しているため脱臭効率が悪い。一方、ファンを
オーブン調理と同様に回転させると、食品が乾燥した
り、食品の温度が上りにくいという欠点があった。
DISCLOSURE OF INVENTION Problems to be Solved by the Invention In a model having a deodorizing catalyst installed in an exhaust duct to remove an odor during cooking, like a conventional oven grill range,
It was not deodorized unless the air inside the chamber was introduced into the exhaust duct. For this reason, the air containing odor in the refrigerator was deodorized by the deodorizing catalyst in the exhaust duct only when using the grill, and when using the oven, the air in the refrigerator was not sent to the exhaust duct, so the odor remained in the refrigerator. .. There is also a method of providing a deodorizing catalyst in the refrigerator, but in order to efficiently perform deodorization, it is necessary to activate the catalyst and increase the number of contact between the air in the refrigerator and the catalyst. In this case, generally in oven cooking, the fan often rotates, so the deodorizing efficiency is good, but in grill cooking, the fan in the refrigerator is stopped, so the deodorizing efficiency is poor. On the other hand, when the fan is rotated in the same manner as in the case of oven cooking, there are drawbacks that the food is dried and the temperature of the food is hard to rise.

【0007】そこで、本発明は、グリル、オーブン調理
ともに高脱臭率を有し、且つ加熱むら、温風による食品
表面の乾燥がなく加熱調理ができる加熱調理装置を提供
することを目的とする。
Therefore, an object of the present invention is to provide a cooking device which has a high deodorizing rate for both grilling and oven cooking and is capable of cooking without uneven heating or drying of the food surface by warm air.

【0008】[0008]

【課題を解決するための手段】上記問題を解決するため
に、本発明は、第1に、赤外線透過性を有する脱臭触媒
を表面部に担持した調理物加熱用の発熱体を、調理室の
天井部に設置してなることを要旨とする。
In order to solve the above problems, the present invention firstly provides a heating element for heating a cooking product, which has a deodorizing catalyst having an infrared ray transmitting property on a surface thereof, for heating a cooking chamber. The main point is to install it on the ceiling.

【0009】第2に、赤外線透過性を有する脱臭触媒を
表面部に担持し調理室の天井部に設置された調理物加熱
用の発熱体と、前記脱臭触媒の温度が活性化温度に達し
たのち前記調理室内の空気を当該発熱体の位置で風速
0.5〜3.0m/sec になるように撹拌するファンとを
有することを要旨とする。
Secondly, the temperature of the deodorizing catalyst and the heating element for heating the cooking product, which is mounted on the ceiling of the cooking chamber and carries the deodorizing catalyst having infrared transparency on the surface, reaches the activation temperature. The gist of the present invention is to have a fan for stirring the air in the cooking chamber so that the wind speed becomes 0.5 to 3.0 m / sec at the position of the heating element.

【0010】[0010]

【作用】上記構成により、第1に、加熱調理時に調理室
天井部の発熱体に通電されると、その表面部に担持され
た脱臭触媒が同時に加熱されて活性化される。その活性
化の速度は、脱臭触媒が発熱体に直接接しているため、
触媒ヒータを外部に置いて加熱する従来例と比べて著し
く短時間で活性化する。臭気を含む調理室内の空気が温
風の自然対流により撹拌され、活性化された脱臭触媒に
接触して効率よく分解脱臭される。
With the above construction, first, when the heating element on the ceiling of the cooking chamber is energized during cooking, the deodorizing catalyst carried on the surface of the heating element is simultaneously heated and activated. The rate of activation is because the deodorizing catalyst is in direct contact with the heating element,
The catalyst heater is activated in a remarkably short time as compared with the conventional example in which the catalyst heater is placed outside for heating. The air in the cooking chamber containing an odor is stirred by natural convection of warm air, contacts the activated deodorizing catalyst, and is efficiently decomposed and deodorized.

【0011】第2に、加熱調理時に発熱体への通電によ
り脱臭触媒が同時に加熱されて短時間で活性化されたあ
と、ファンが回転し始め、調理室内の空気が強制的に撹
拌される。これにより脱臭触媒と調理室内空気の接触回
数が増え、一層効率よく脱臭がなされる。このとき、フ
ァンによる風速が発熱体の位置で0.5〜3m/sec の間
に調節されるため、調理室内温度の低下が起ることなく
温度の均一化が図られて加熱むらが防止される。また、
調理物の表面が温風で乾燥して外観及び食味を損なうこ
とがなくなる。
Secondly, when the heating element is energized during heating and the deodorizing catalyst is simultaneously heated and activated in a short time, the fan starts to rotate and the air in the cooking chamber is forcibly stirred. As a result, the number of times the deodorizing catalyst comes into contact with the air in the cooking chamber increases the efficiency of deodorizing. At this time, the wind speed by the fan is adjusted to 0.5 to 3 m / sec at the position of the heating element, so that the temperature in the cooking chamber does not drop and the temperature is made uniform to prevent uneven heating. It Also,
The surface of the cooked product is not dried by warm air and the appearance and taste are not impaired.

【0012】[0012]

【実施例】以下、本発明の実施例を図面に基づいて説明
する。
Embodiments of the present invention will be described below with reference to the drawings.

【0013】この実施例は、オーブングリルレンジに適
用されている。
This embodiment is applied to an oven grill range.

【0014】図1ないし図12は、本発明の第1実施例
を示す図である。
1 to 12 are views showing a first embodiment of the present invention.

【0015】図1ないし図3において、1は本体キャビ
ネット、2は調理室を構成するオーブン内箱、3は調理
室の扉、4はガラスバリア、5は取手である。6は角
皿、7は被調理物である食品であり、調理室2の天井部
分には、その表面に脱臭触媒を担持した調理物加熱用の
触媒担持ヒータ10が設置されている。触媒担持ヒータ
10の背面側(上部側)には、このヒータ10から発せ
られる輻射熱を下部の調理物7へ反射させる反射板8が
形成され、この反射板8の部分に、排気ダクト16に通
じる排気口9が形成されている。図5は、この排気口9
の部分の要部構造を拡大して示している。また、調理室
の背面側の部分には、オーブン機能のときに調理室2内
(庫内)の空気を熱風循環させるシロッコファン17、
シロッコファン駆動用のモータ18及びオーブンヒータ
19が配設されている。21は庫内に熱風を吹出す吹出
し孔、22は庫内空気をヒータ室に取込む吸込み孔であ
る。23は送気ファンであり、吸気ダクト24から庫内
に空気を送風するようになっている。また、送気ファン
23は吸気ダクト24の入口にあるマグネトロン25を
冷却する機能ももっている。前記排気口9はマイクロ波
を外部に漏らさない程度のメッシュの金網、もしくはパ
ンチングメタルでできている。
1 to 3, 1 is a main body cabinet, 2 is an oven inner box which constitutes a cooking chamber, 3 is a door of the cooking chamber, 4 is a glass barrier, and 5 is a handle. 6 is a square plate, 7 is a food to be cooked, and a catalyst-supporting heater 10 for heating a cooking product, which has a deodorizing catalyst supported on the surface thereof, is installed on the ceiling of the cooking chamber 2. On the back side (upper side) of the catalyst-carrying heater 10, there is formed a reflection plate 8 for reflecting the radiant heat emitted from the heater 10 to the lower cooking product 7, and the exhaust duct 16 is connected to the reflection plate 8 portion. The exhaust port 9 is formed. FIG. 5 shows this exhaust port 9
The main part structure of the part is shown enlarged. In addition, a sirocco fan 17, which circulates hot air in the cooking chamber 2 (inside the chamber) when the oven function is provided, on the rear side of the cooking chamber,
A motor 18 for driving a sirocco fan and an oven heater 19 are provided. Reference numeral 21 is a blowout hole for blowing hot air into the inside of the refrigerator, and 22 is a suction hole for taking in the inside air into the heater chamber. Reference numeral 23 denotes an air-blowing fan, which blows air from the intake duct 24 into the refrigerator. The air supply fan 23 also has a function of cooling the magnetron 25 at the inlet of the intake duct 24. The exhaust port 9 is made of a metal mesh or a punching metal that does not leak microwaves to the outside.

【0016】図4は、触媒担持ヒータ10の構造を一部
破断して拡大して示している。11は赤外線透過性を有
する耐熱性のガラスセラミック管で厚さは約1mmであ
る。ガラスセラミック管11の中には、スパイラル状の
Fe−Cr線からなる発熱線12が封入されている。発
熱線12の発熱量は1200Wである。このガラスセラ
ミック管11と発熱線12とで管状発熱体が構成されて
いる。また、ガラスセラミック管11の外周表面には、
アルミナベースの上に白金を担持したもの、30mg/cm
2 添着した触媒層が脱臭触媒13として形成されてい
る。この脱臭触媒13の層も赤外線透過性を有してい
る。14は発熱線12に接続された固定板、15は発熱
線12及び固定板14を支持するとともに絶縁を保つた
めの碍子である。
FIG. 4 is an enlarged view of the structure of the catalyst carrying heater 10 with a part thereof cut away. Reference numeral 11 denotes a heat-resistant glass-ceramic tube having infrared transparency and has a thickness of about 1 mm. A heating wire 12 made of a spiral Fe—Cr wire is enclosed in the glass ceramic tube 11. The heating value of the heating wire 12 is 1200 W. The glass ceramic tube 11 and the heating wire 12 form a tubular heating element. Further, on the outer peripheral surface of the glass ceramic tube 11,
Platinum supported on alumina base, 30 mg / cm
2 The attached catalyst layer is formed as the deodorizing catalyst 13. The layer of the deodorizing catalyst 13 also has infrared transparency. Reference numeral 14 is a fixing plate connected to the heating wire 12, and 15 is an insulator for supporting the heating wire 12 and the fixing plate 14 and maintaining insulation.

【0017】次に、上述のように構成された加熱調理装
置の作用を説明する。
Next, the operation of the heating and cooking device configured as described above will be described.

【0018】角皿6の上に食品7をおきグリル調理を行
う。触媒担持ヒータ10は図4に示したものを用いてい
る。調理開始と同時に触媒担持ヒータ10に通電され、
ヒータ10表面の温度は約2分で500℃に達し、脱臭
触媒13の温度も400℃程度となる。これは食品7が
加熱され臭気の発生するまでに十分に活性化されている
ことになる。次いでモータ18が駆動してファン17が
触媒担持ヒータ10の位置の風速が2.5m/sec となる
ように回転し始め、庫内の空気は、図3中の矢印Wのよ
うに吸込み孔22を通って吹出し孔21より庫内へ戻る
という流れを繰返す。このモータ18の制御はトライア
ックにより回転数制御しており、通電率は80%となっ
ている(100V,50Hz)。図6に風速と脱臭効
率、食品7の乾燥度を示す。脱臭効率は脱臭触媒13表
面上を通過する全臭気量に対して触媒で分解された臭気
量をもって示している。食品乾燥度は目視にて乾燥の具
合を6段階で判定した。数字の表す意味は0;乾燥しき
っている、1;乾燥していておいしくなさそう、2;や
や乾燥気味、3;乾燥は気にならない程度、4;おいし
そう、5;とてもおいしそう、である。この図より、風
速は脱臭効率が高く、しかも乾燥し過ぎず、見た目にお
いしく感じる範囲である0.5〜3.0m/secが好まし
いことが分る。また、食品7を加熱調理すると煙及び調
理臭が発生するがこれらも温風と同時に庫内を循環し、
脱臭触媒13と接触すると酸化分解により脱臭される。
しかも庫内に発生した食品7からの水蒸気と、また庫内
空気が熱によって膨張する分を庫外に排気するため、こ
れと同時に、排気口19から、庫外に臭気が排出される
わけであるが、この排気口9の部分で脱臭触媒13をつ
けた触媒担持ヒータ10があり、ここで臭気は酸化分解
されるので、臭気が外部にリークすることは殆んどな
い。およそ15分ののち、調理が終了し食品7は表面に
均一に焼き色が付き、見た目に乾燥している様子は無か
った。また庫内には調理残留臭は殆んど残っていなかっ
た。
The food 7 is placed on the square plate 6 and grilled. As the catalyst supporting heater 10, the one shown in FIG. 4 is used. Simultaneously with the start of cooking, the catalyst supporting heater 10 is energized,
The temperature of the surface of the heater 10 reaches 500 ° C. in about 2 minutes, and the temperature of the deodorizing catalyst 13 also reaches about 400 ° C. This means that the food 7 is sufficiently activated by the time it is heated and odor is generated. Next, the motor 18 is driven and the fan 17 starts to rotate so that the wind speed at the position of the catalyst carrying heater 10 becomes 2.5 m / sec, and the air in the refrigerator is sucked into the suction hole 22 as shown by an arrow W in FIG. The flow of returning from the blow-out hole 21 to the inside of the refrigerator is repeated. The motor 18 is controlled by a triac to control the rotation speed, and the energization rate is 80% (100 V, 50 Hz). FIG. 6 shows the wind speed, the deodorizing efficiency, and the dryness of the food 7. The deodorizing efficiency is shown by the amount of odor decomposed by the catalyst with respect to the total amount of odor passing on the surface of the deodorizing catalyst 13. The degree of dryness of the food was visually evaluated on the basis of 6 levels of the degree of drying. The numbers represent 0; it is dry, 1 is dry and doesn't taste good, 2 is a little dry, 3 is dry, and 4 is delicious, 5 is very delicious. .. From this figure, it can be seen that the wind speed is preferably 0.5 to 3.0 m / sec, which is a range in which the deodorizing efficiency is high, the air does not dry too much, and it looks delicious. Also, when the food 7 is cooked by heating, smoke and cooking odor are generated, but these also circulate in the refrigerator at the same time as warm air,
When it comes into contact with the deodorizing catalyst 13, it is deodorized by oxidative decomposition.
Moreover, since the steam generated from the food 7 generated in the refrigerator and the amount of the air in the refrigerator expanded by heat are exhausted to the outside of the refrigerator, at the same time, the odor is discharged from the outlet 19 to the outside of the refrigerator. However, there is a catalyst supporting heater 10 provided with a deodorizing catalyst 13 at the exhaust port 9, and the odor is oxidatively decomposed here, so the odor hardly leaks to the outside. After about 15 minutes, the cooking was completed, and the surface of the food 7 was uniformly browned, and there was no apparent appearance of drying. Almost no cooking residual odor remained in the refrigerator.

【0019】図7には、このグリル調理中の脱臭触媒1
3の温度(同図(a))、ヒータ10の通電量(同図
(b))、ファン17の通電率(同図(c))、アセト
アルデヒド脱臭効率(同図(d))の各変化を示す。調
理開始と同時にヒータ10に1200Wの電力が通電さ
れ、触媒温度が400℃に達する。次いで2分後、モー
タ18に通電され、ファン17が回転する。触媒担持ヒ
ータ10は庫内温度を260℃に保つようにON/OF
F通電を繰返す。このとき、触媒温度はほぼ400℃に
維持される。ここで、アセトアルデヒドは調理臭の成分
のひとつで比較的多くの食品から加熱調理するときに発
生する臭気である。脱臭効率は、触媒13に接触した空
気のうち、脱臭される空気量で示されるが、触媒13が
活性化温度に達すると同時に90%をこえ、その後ずっ
とこの値を維持しており庫内の臭気は、殆んど分解され
たことを示している。次に庫外にリークした臭気量を図
9に示す。これは、本実施例のオーブングリルレンジを
一定の大きさの室内におき、オーブン庫内にアセトアル
デヒドのガスを一定流量で投入し、オーブン庫外に脱臭
されずにリークしてきたアセトアルデヒドの室内の濃度
の時間変化を示している。即ち完全に脱臭触媒13で分
解脱臭されていれば、庫外には臭気は出てこないため、
室内の濃度は上昇しないが、実際には、排気ダクトや
扉、吸気ダクト側からのリークがあるために、少しずつ
室内のアセトアルデヒド濃度は上昇する。このうち全く
分解が起らないとした場合の濃度変化が、計算上でこの
図の破線bのようになる。これに対して、本実施例で
は、庫外への臭気のリークは、この図で実線aのように
なり、脱臭効率として95%を維持していることが分
る。
FIG. 7 shows the deodorizing catalyst 1 during this grill cooking.
3 (the same figure (a)), the energization amount of the heater 10 (the same figure (b)), the energization rate of the fan 17 (the same figure (c)), the acetaldehyde deodorization efficiency (the same figure (d)) changes Indicates. Simultaneously with the start of cooking, electric power of 1200 W is applied to the heater 10, and the catalyst temperature reaches 400 ° C. Then, two minutes later, the motor 18 is energized and the fan 17 rotates. The catalyst-supporting heater 10 is turned on / off to keep the temperature inside the chamber at 260 ° C.
Repeat F energization. At this time, the catalyst temperature is maintained at about 400 ° C. Here, acetaldehyde is one of the components of cooking odor, and is an odor generated when relatively many foods are heated and cooked. The deodorizing efficiency is shown by the amount of air deodorized in the air contacting with the catalyst 13. The deodorizing efficiency exceeds 90% as soon as the catalyst 13 reaches the activation temperature, and keeps this value for the rest of the time. The odor indicates that it was almost decomposed. Next, the amount of odor leaked outside the refrigerator is shown in FIG. This is, the oven grill range of the present embodiment is placed in a room of a certain size, the gas of acetaldehyde is fed into the oven at a constant flow rate, and the concentration of acetaldehyde in the room that has leaked to the outside of the oven without being deodorized. Shows the change over time. That is, if the deodorization catalyst 13 is completely decomposed and deodorized, no odor will come out of the refrigerator.
Although the concentration in the room does not increase, in reality, the acetaldehyde concentration in the room gradually increases due to the leakage from the exhaust duct, door, and intake duct side. Of these, the change in concentration when no decomposition occurs is calculated as shown by the broken line b in this figure. On the other hand, in this embodiment, the leak of the odor to the outside of the refrigerator is as shown by the solid line a in this figure, and it can be seen that the deodorization efficiency is maintained at 95%.

【0020】次いで、オーブン調理の場合を述べる。Next, the case of oven cooking will be described.

【0021】角皿6の上に食品7をおきオーブン調理を
行う。調理開始と同時に触媒担持ヒータ10とオーブン
ヒータ19に通電される。ヒータ10表面の温度は約5
分で400℃に達し脱臭触媒13の温度も300℃とな
り、十分活性化される。次いでモータ18が駆動してフ
ァン17がヒータ10の所でグリル調理のときよりも多
い風速4m/sec となるように回転し始め、オーブンヒー
タ19で加熱された空気は触媒担持ヒータ10によって
暖められた庫内の空気とともに図3中の矢印Wのように
吸込み孔22を通って吹出し孔21より庫内へ戻るとい
う流れを繰返す。そして庫内温度が160℃で均一にな
るようにオーブンヒータ19のON,OFFを繰返す。
このように食品7を加熱調理すると煙及び調理臭が発生
するがこれらも温風と同時に庫内を循環する。そしてこ
れらが、触媒13と接触すると酸化分解により脱臭され
る。およそ30分ののち、調理が終了し食品7は表面に
均一に焼き色が付き、見た目に乾燥している様子はなか
った。また庫内に調理臭は残っていなかった。
Food 7 is placed on the square plate 6 and cooked in the oven. Simultaneously with the start of cooking, the catalyst supporting heater 10 and the oven heater 19 are energized. The temperature of the heater 10 surface is about 5
The temperature reaches 400 ° C. in minutes, and the temperature of the deodorizing catalyst 13 also reaches 300 ° C., so that it is sufficiently activated. Then, the motor 18 is driven so that the fan 17 starts rotating at the heater 10 so that the wind speed becomes 4 m / sec, which is higher than that at the time of grill cooking, and the air heated by the oven heater 19 is warmed by the catalyst supporting heater 10. Along with the air in the refrigerator, the flow of passing through the suction hole 22 and returning from the outlet hole 21 to the inside of the refrigerator is repeated as shown by an arrow W in FIG. Then, the ON / OFF of the oven heater 19 is repeated so that the internal temperature becomes uniform at 160 ° C.
When the food 7 is heated and cooked in this way, smoke and cooking odor are generated, but these also circulate in the refrigerator at the same time as hot air. When they come into contact with the catalyst 13, they are deodorized by oxidative decomposition. After about 30 minutes, the cooking was completed, and the surface of the food 7 was evenly browned, and it did not seem that it was dry. Moreover, no cooking odor remained in the refrigerator.

【0022】図10には、このオーブン調理中の脱臭触
媒13の温度(同図(a))、ヒータ10の通電量(同
図(b))、ファン17の通電率(同図(c))、アセ
トアルデヒド脱臭効率(同図(d))の各変化を示す。
調理開始と同時にヒータ10に1200Wの電力が通電
され、触媒温度が300℃に達する(オーブンヒータの
通電に関してはグラフ化していない)。次いで5分後、
モータ18が通電率100%で作動しファン17が回転
するが、触媒担持ヒータ10は通電のON,OFFを繰
返し、触媒温度は300℃に維持される。同時に、オー
ブンヒータ19も通電のON,OFFを繰返して庫内温
度は160℃に保たれる。また、脱臭触媒は脱臭触媒1
3が活性化温度に達すると同時に90%をこえ、その後
ずっとこの値を維持しており庫内の臭気をほとんど分解
したことを示している。
FIG. 10 shows the temperature of the deodorizing catalyst 13 during cooking in the oven ((a) in the same figure), the energization amount of the heater 10 ((b) in the figure), and the energization rate of the fan 17 ((c) in the figure). ) And acetaldehyde deodorization efficiency ((d) in the figure).
Simultaneously with the start of cooking, electric power of 1200 W is applied to the heater 10, and the catalyst temperature reaches 300 ° C (the graph of the energization of the oven heater is not shown). Then 5 minutes later,
Although the motor 18 operates at a duty ratio of 100% and the fan 17 rotates, the catalyst-carrying heater 10 repeatedly turns on and off the electricity supply, and the catalyst temperature is maintained at 300 ° C. At the same time, the oven heater 19 also keeps the internal temperature at 160 ° C. by repeating ON / OFF of energization. The deodorizing catalyst is the deodorizing catalyst 1.
When 3 reached the activation temperature, it exceeded 90% at the same time, and maintained this value all the time thereafter, indicating that most of the odor in the refrigerator was decomposed.

【0023】次に、この実施例の作用、効果を一層明ら
かにするため、各比較例を述べる。
Next, comparative examples will be described in order to further clarify the function and effect of this embodiment.

【0024】比較例1 本実施例と同様のオーブングリルレンジで、角皿6の上
に食品7をおきグリル調理を行う。加熱調理用ヒータは
図4に示した触媒担持ヒータではなく、脱臭触媒層がな
い通常の管状発熱体を用いた。調理開始と同時にヒータ
に通電され、ヒータ表面の温度は約2分で350℃に達
した。ここで本実施例より温度が低いのは表面に触媒層
がないため、断熱効果が起らないためである。次いでモ
ータ18が駆動してファン17がヒータの所の風速0.
5〜3m/sec で回転し始め、庫内の空気は図3中矢印W
のように吸込み孔22を通って吹出し孔21より庫内へ
戻るという流れを繰返す。このように食品7を加熱調理
すると煙及び調理臭が発生するが、これらも温風と同時
に庫内を循環する。およそ15分ののち、調理が終了し
食品7は表面に均一に焼き色が付き、見た目に乾燥して
いる様子はなかったが、庫内には調理臭が残っていた。
図8中の破線bにこのときの庫内のアセトアルデヒド脱
臭効率の経時変化を実線aの実施例と比較して示す。こ
れによると、触媒をヒータ上に添着しない場合には、ヒ
ータ表面の熱分解だけによるため効率が悪いことがわか
る。
Comparative Example 1 In the oven grill range similar to this example, food 7 is placed on a square plate 6 and grilled. As the heater for heating and cooking, an ordinary tubular heating element having no deodorizing catalyst layer was used instead of the catalyst supporting heater shown in FIG. The heater was energized simultaneously with the start of cooking, and the temperature of the heater surface reached 350 ° C. in about 2 minutes. Here, the temperature is lower than that in this example because there is no catalyst layer on the surface, and the heat insulating effect does not occur. Next, the motor 18 is driven and the fan 17 causes the wind speed at the heater to reach 0.
The air in the refrigerator starts to rotate at 5 to 3 m / sec, and the air in the refrigerator is indicated by the arrow W in FIG.
As described above, the flow of returning from the blow-out hole 21 to the inside of the refrigerator through the suction hole 22 is repeated. When the food 7 is heated and cooked in this manner, smoke and cooking odor are generated, but these also circulate in the refrigerator at the same time as hot air. After about 15 minutes, cooking was completed, and the surface of the food 7 was evenly browned and did not appear to be apparently dry, but cooking odor remained in the refrigerator.
A broken line b in FIG. 8 shows a change with time in the acetaldehyde deodorizing efficiency in the refrigerator at this time in comparison with the example of the solid line a. According to this, when the catalyst is not attached on the heater, the efficiency is poor because it is only due to the thermal decomposition of the heater surface.

【0025】比較例2 本実施例と同様のオーブングリルレンジで、角皿6の上
に食品7をおきグリル調理を行う。触媒担持ヒータ10
は図4に示したものと同様のものを用いる。この比較例
では実施例と異なり、排気ダクトは庫内の側面につけら
れている。このため調理開始と同時にこの排気口から庫
内の水蒸気と共に拡散によってリークし始める。このこ
とを実施例と同様に、オーブングリルレンジを一定の大
きさの室内におき、オーブン庫内にアセトアルデヒドの
ガスを一定流量で投入し、オーブン庫外に脱臭されずに
リークしてきたアセトアルデヒドの室内の濃度の変化に
よって実証した。この結果を図9の実線cに、実線aの
実施例と比較して示す。これによると、実施例に比較し
て、時間と共に臭気濃度が上昇し、最終的な脱臭率は、
75%になっていることが分る。これはすなわち、排気
ダクトが側面にあり、触媒付きヒータ10と離れている
ため、臭気が触媒に接触せずに庫外にリークしてしまう
ためである。しかし、庫内の残留臭気は実施例と同様に
調理終了後も少なく、良く脱臭されていることが分っ
た。
Comparative Example 2 In the oven grill range similar to that of this example, food 7 is placed on a square plate 6 and grilled. Catalyst support heater 10
Is the same as that shown in FIG. In this comparative example, unlike the example, the exhaust duct is attached to the side surface inside the refrigerator. For this reason, at the same time when cooking is started, the exhaust port begins to leak due to diffusion together with the water vapor in the refrigerator. As in the example, the oven grill range is placed in a room of a certain size, acetaldehyde gas is introduced into the oven at a constant flow rate, and the room for acetaldehyde leaked to the outside of the oven without being deodorized. It was demonstrated by the change in the concentration of. The result is shown in a solid line c of FIG. 9 in comparison with the embodiment of the solid line a. According to this, as compared with the example, the odor concentration increases with time, and the final deodorization rate is
You can see that it is 75%. This is because the exhaust duct is located on the side surface and is separated from the heater 10 with catalyst, so that the odor leaks to the outside of the refrigerator without coming into contact with the catalyst. However, it was found that the residual odor in the refrigerator was small even after the completion of cooking as in the case of the example, and that the odor was well deodorized.

【0026】比較例3 本実施例と同様のオーブングリルレンジで、角皿6の上
に食品7をおきグリル調理を行う。触媒担持ヒータ10
は図4に示したものと同等のものを用いる。この比較例
では実施例と異なり、調理開始と同時に触媒担持ヒータ
10が十分暖まらないうちにヒータ10とモータ18に
通電され、ファン17が回転する。すると庫内の冷えた
空気が矢印Wのように循環するためヒータ表面の温度が
400℃に達して触媒が十分活性化されるのに約8分か
かった。およそ20分後に調理が終了し、食品の加熱具
合は良好であったが、調理時間が多くかかった。図11
に調理中の触媒の温度(同図(a))、ヒータの通電量
(同図(b))、ファンの通電率(同図(c))、アセ
トアルデヒド脱臭効率(同図(d))の各変化を示す。
調理開始と同時にヒータ10に1200Wの電力と、モ
ータ18に通電され、ファン17が回転しおよそ実施例
の場合の4倍の時間がかかって触媒温度が300℃に達
する。これはファン17が回転することで庫内温度が上
りにくく、かつ安定しにくいためである。ヒータ10は
庫内温度を260℃に維持するように、通電のON,O
FFを繰返す。一方、触媒が活性化温度に達すると同時
に脱臭効率90%を越え、その後ずっとこの値を維持し
ており庫内の臭気は殆んど分解したことを示している
が、触媒温度の立上りが遅い分アセトアルデヒドの脱臭
効率も立上りが遅い。
Comparative Example 3 In the same oven grill range as this example, food 7 is placed on a square plate 6 and grilled. Catalyst support heater 10
Is the same as that shown in FIG. In this comparative example, unlike the embodiment, the heater 10 and the motor 18 are energized and the fan 17 rotates before the catalyst-carrying heater 10 is sufficiently warmed at the start of cooking. Then, since the cool air in the refrigerator circulates as shown by the arrow W, it took about 8 minutes for the temperature of the heater surface to reach 400 ° C. and the catalyst to be fully activated. Cooking was completed after about 20 minutes, and the food was in a good heating condition, but it took a long time for cooking. 11
Of the temperature of the catalyst during cooking ((a) in the figure), the energization amount of the heater ((b) in the figure), the energization rate of the fan ((c) in the figure), and the deodorizing efficiency of acetaldehyde ((d) in the figure). Each change is shown.
Simultaneously with the start of cooking, the heater 10 is energized with 1200 W and the motor 18 is energized, the fan 17 is rotated, and the catalyst temperature reaches 300 ° C. in about four times as long as in the case of the embodiment. This is because the rotation of the fan 17 makes it difficult for the internal temperature of the refrigerator to rise and is difficult to stabilize. The heater 10 keeps the temperature inside the chamber at 260 ° C.
Repeat FF. On the other hand, at the same time when the catalyst reached the activation temperature, the deodorization efficiency exceeded 90%, and this value was maintained all the time, indicating that the odor in the warehouse was almost decomposed, but the rise of the catalyst temperature was slow. The deodorization efficiency of minute acetaldehyde also rises slowly.

【0027】比較例4 本実施例と同様のオーブングリルレンジで、角皿6の上
に食品7をおきグリル調理を行う。触媒担持ヒータ10
は図4に示したものと同等のものを用いる。調理開始と
同時に触媒担持ヒータ10に通電され、ヒータ表面の温
度は約2分で400℃に達し触媒の温度も300℃程度
となり、十分活性化される。次いでモータ18が駆動し
てオーブン調理の場合と同じようにファン17がヒータ
10の所の風速4m/sec で回転し始め、庫内の空気は矢
印Wのように吸込み孔22を通って吹出し孔21より庫
内へ戻るという流れを繰返す。およそ15分ののち、調
理が終了し食品7は表面に均一に焼き色が付いていた
が、風速が速いため見た目に乾燥している様子で表面が
カラカラであり食味も低下していた。このことを図12
に触媒の温度(同図(a))、ヒータへの通電量(同図
(b))、ファンへの通電量(同図(c))、アセトア
ルデヒド脱臭効率(同図(d))の各変化で示す。調理
開始と同時にヒータ10に1200Wの電力が通電さ
れ、触媒温度が300℃に達する。次いで2分後、モー
タ18は通電率100%で作動し、ファン17が風速4
m/sec で回転するがヒータ10は庫内温度を260℃に
保つように、通電のON,OFFを繰返す。しかし、通
風量が多いため、ヒータ10への通電時間を実施例の場
合よりも長くしなくてはならない。このようにファン1
7及びヒータ10ともに実施例の場合より電力が必要と
なり、不経済である。脱臭は触媒が活性化温度に達する
と同時に脱臭効率が90%近くなり、その後ずっとこの
値を維持しており庫内の臭気は殆んど分解したことを示
しているが、できた調理品は風速が多いために乾燥して
おりグリル機能としては好ましくない。
Comparative Example 4 In the same oven grill range as in this example, food 7 is placed on a square plate 6 and grilled. Catalyst support heater 10
Is the same as that shown in FIG. Simultaneously with the start of cooking, the catalyst-carrying heater 10 is energized, the temperature of the heater surface reaches 400 ° C. in about 2 minutes, and the temperature of the catalyst reaches about 300 ° C., so that the catalyst is sufficiently activated. Then, the motor 18 is driven and the fan 17 starts to rotate at a wind speed of 4 m / sec at the heater 10 as in the case of oven cooking, and the air in the refrigerator passes through the suction hole 22 as shown by an arrow W and blows out. The flow of returning from 21 to the inside of the refrigerator is repeated. After about 15 minutes, the cooking was completed, and the surface of the food 7 was uniformly browned, but the surface was dry and apparently dry because of the high wind speed, and the taste was deteriorated. This is shown in FIG.
The temperature of the catalyst ((a) in the figure), the amount of electricity to the heater ((b) in the figure), the amount of electricity to the fan ((c) in the figure), and the deodorizing efficiency of acetaldehyde ((d) in the figure). Shown by change. Simultaneously with the start of cooking, 1200 W of electric power is supplied to the heater 10, and the catalyst temperature reaches 300 ° C. Then, two minutes later, the motor 18 operates at a duty ratio of 100%, and the fan 17 operates at a wind speed of 4%.
Although the heater 10 rotates at m / sec, the heater 10 repeats ON / OFF of energization so as to keep the temperature inside the chamber at 260 ° C. However, since the amount of ventilation is large, the time for energizing the heater 10 must be made longer than in the case of the embodiment. Fan 1 like this
Both 7 and the heater 10 require more electric power than the case of the embodiment, which is uneconomical. As for deodorization, at the same time when the catalyst reached the activation temperature, the deodorization efficiency became close to 90%, and this value was maintained all the time thereafter, indicating that most of the odor in the refrigerator was decomposed. The wind speed is high and it is dry, which is not desirable for the grill function.

【0028】なお、上述の実施例では、脱臭触媒とし
て、白金系のものを用いたが、ヒータの中からの赤外線
を大幅に遮らない程度で、このヒータの温度で活性化
し、しかも熱によって劣化しない触媒の種類と、触媒の
厚さであれば何でもよく、パラジウムなどの貴金属、セ
リウム、ランタンなどの希土類、またマンガン、コバル
ト、銅などの卑金属を用いても構わない。また触媒は、
ガラスセラミック管上にアルミナをベースとして添着し
てあるが、触媒の添着表面積が大きく、ヒートショック
によって剥離しないように付けてあればなんでもよく、
シリカ、チタニア、マグネシアでも構わない。また剥離
しないようにガラス面をサンドブラストなどによって粗
しても構わない。
In the above embodiment, a platinum-based deodorizing catalyst was used. However, the deodorizing catalyst is activated at the temperature of the heater and is not deteriorated by heat as long as infrared rays from the heater are not significantly blocked. Any type of catalyst can be used as long as it has a certain thickness, and noble metals such as palladium, rare earths such as cerium and lanthanum, and base metals such as manganese, cobalt, and copper can be used. Also, the catalyst is
Alumina is attached as a base on the glass-ceramic tube, but the catalyst has a large attachment surface area, so long as it is attached so as not to peel off due to heat shock,
Silica, titania, magnesia may be used. The glass surface may be roughened by sandblasting or the like so as not to peel.

【0029】また、第1実施例で排気口は、触媒担持ヒ
ータ10の上部の反射板の位置に設けてあるが、ヒータ
10からの上昇気流によって、触媒に庫内空気が効率よ
く接触して、排気ダクトに導入され、排気される位置で
あればどこでもよく、例えば、図13の第2実施例のよ
うに、触媒担持ヒータ10は、パンチングメタル26の
上部に置かれても構わない。この場合、庫内調理の赤外
線は、このパンチングメタル26を通して食品に達し、
しかも庫内の空気はこのパンチングメタル26を通して
脱臭され、また庫外へ排出される空気もこのヒータ室の
背面に開いた排気ダクト16を通して、触媒に接触し、
臭気を分解した後、庫外へ排出されるため、効率よく脱
臭される。ただし、この構造ではパンチングメタルは、
十分に開孔率をとり、庫内空気を効率よく触媒に接触さ
せ循環させることが、脱臭効率と、調理とを効率よく行
うために必要な条件である。また排気口27を図14の
第3実施例のように触媒担持ヒータ10の真横に設置し
ても構わない。
Further, in the first embodiment, the exhaust port is provided at the position of the reflection plate above the catalyst-carrying heater 10. The rising airflow from the heater 10 allows the air in the refrigerator to efficiently contact the catalyst. Any position may be used as long as it is introduced into the exhaust duct and exhausted. For example, as in the second embodiment of FIG. 13, the catalyst-carrying heater 10 may be placed above the punching metal 26. In this case, the infrared rays of the cooking inside reach the food through the punching metal 26,
Moreover, the air inside the chamber is deodorized through the punching metal 26, and the air discharged outside the chamber also comes into contact with the catalyst through the exhaust duct 16 opened on the back surface of the heater chamber,
After decomposing the odor, it is discharged to the outside of the storage, so it is efficiently deodorized. However, in this structure punching metal is
A sufficient porosity and efficient contact of the air in the refrigerator with the catalyst to circulate them are necessary conditions for efficient deodorization and efficient cooking. Further, the exhaust port 27 may be installed right next to the catalyst carrying heater 10 as in the third embodiment of FIG.

【0030】また上述の各実施例で用いたヒータは、耐
熱ガラスセラミックでできた管にヒータ線を入れたもの
を用いたが、管状ヒータで、表面が触媒活性化温度以上
になり、調理に用いることのできるヒータであれば何で
もよく、例えば、中にW線を入れ、アルゴンガスを封入
した加熱ランプや、ハロゲンヒータ、シーズヒータ等を
用いても構わない。
The heater used in each of the above-mentioned embodiments was a tube made of a heat-resistant glass ceramic with a heater wire inserted therein. Any heater that can be used may be used, and for example, a heating lamp in which a W wire is inserted and argon gas is enclosed, a halogen heater, a sheath heater, or the like may be used.

【0031】次に、図15及び図16には、本発明の第
4実施例を示す。
Next, FIGS. 15 and 16 show a fourth embodiment of the present invention.

【0032】この実施例のオーブングリルレンジは、フ
ァンにより温風を循環させて食品を調理する機能を採用
しておらず、庫内にファンを持たない機種として構成さ
れている。即ち角皿6の上に食品7をおき上下2本のヒ
ータを用いてオーブン調理を行うように構成されてお
り、調理開始と同時に触媒担持ヒータ10とオーブン用
下ヒータ28に通電されるようになっている。ヒータ1
0表面の温度は約5分で400℃に達し触媒の温度も3
00℃程度となり、十分活性化される。触媒担持ヒータ
10は触媒の温度を300℃に保つように、そしてオー
ブン用下ヒータ28は庫内温度が160℃で均一になる
ようにON,OFFを繰返す。このように食品7を加熱
調理すると煙及び調理臭が発生するがファンによって強
制撹拌する場合に比べて、触媒と庫内空気の接触回数は
少ないため効率はやや劣るが、これらは温風の自然対流
と同時に庫内を循環することで触媒で接触し酸化分解に
より脱臭される。およそ30分ののち、調理が終了し食
品7は表面に均一に焼き色が付き、見た目に乾燥してい
る様子はない。また庫内に調理臭は殆んど残らない。
The oven grill range of this embodiment does not employ a function of circulating hot air by a fan to cook food, and is constructed as a model having no fan in the refrigerator. That is, the food 7 is placed on the square plate 6 and the oven is cooked by using the upper and lower heaters, and the catalyst supporting heater 10 and the lower oven heater 28 are energized at the same time when the cooking is started. Is becoming Heater 1
0 Surface temperature reaches 400 ° C in about 5 minutes and catalyst temperature is 3
It becomes about 00 ° C and is fully activated. The catalyst-carrying heater 10 keeps the temperature of the catalyst at 300 ° C., and the oven lower heater 28 repeats ON and OFF so that the internal temperature becomes uniform at 160 ° C. When the food 7 is heated and cooked as described above, smoke and cooking odor are generated, but the efficiency is slightly inferior because the number of contact between the catalyst and the air in the refrigerator is small compared to the case where the fan is forcibly stirred. By circulating in the chamber at the same time as convection, the catalyst contacts and is deodorized by oxidative decomposition. After about 30 minutes, the cooking is completed and the food 7 is evenly browned on the surface and does not appear to be dry to the appearance. Moreover, almost no cooking odor remains in the refrigerator.

【0033】図16には、この実施例によるオーブン調
理中の触媒の温度(同図(a))、ヒータの通電量(同
図(b))、アセトアルデヒド脱臭効率(同図(c))
の各変化を示す。調理開始と同時にヒータ10に120
0Wの電力が通電され、触媒温度が300℃に達する
(オーブン用下ヒータの通電に関してはグラフ化してい
ない)。その後も触媒担持ヒータ10は通電のON,O
FFを繰返し、触媒温度は300℃に維持される。同時
に、オーブン用下ヒータ28も通電のON,OFFを繰
返して庫内温度は160℃に保たれる。また、脱臭効率
は触媒が活性化温度に達すると同時に80%をこえ、そ
の後ずっとこの値を維持しており庫内の臭気をほとんど
分解したことを示している。このような撹拌ファンを庫
内に持たない機種でも自然対流により、オーブン調理の
場合でも脱臭が可能である。
FIG. 16 shows the temperature of the catalyst during oven cooking ((a) in the figure), the amount of electricity supplied to the heater ((b) in the figure) and the deodorizing efficiency of acetaldehyde ((c) in the figure).
Each change of is shown. 120 on the heater 10 at the same time as starting cooking
Electric power of 0 W is applied, and the catalyst temperature reaches 300 ° C. (the graph of the energization of the lower heater for the oven is not shown). After that, the catalyst-carrying heater 10 is turned on and off with electricity.
FF is repeated and the catalyst temperature is maintained at 300 ° C. At the same time, the lower heater 28 for the oven is repeatedly turned on and off to keep the internal temperature at 160 ° C. Further, the deodorization efficiency exceeded 80% at the same time when the catalyst reached the activation temperature, and kept this value thereafter, indicating that most of the odor in the refrigerator was decomposed. Even if the model does not have such a stirring fan, it is possible to deodorize even in the case of oven cooking by natural convection.

【0034】上述のように、各実施例によれば、脱臭触
媒が庫内の天井部に設けてあるので、オーブン調理、グ
リル調理の何れの場合でも効率のよい脱臭が可能であ
る。庫内空気の強制又は自然撹拌により脱臭されるの
で、庫内残留臭についても除去可能である。調理用のヒ
ータと、脱臭触媒を加熱するヒータとが兼用されている
ため、低コストで、エネルギーの無駄が少なく、省電力
である。脱臭触媒の加熱が調理開始と同時に行われ、し
かも迅速で、脱臭触媒に最適な温度に維持できるため、
触媒脱臭が効率よく行える。脱臭触媒のコーティングに
は主にセラミック系の材料を用いるため、遠赤外線をよ
り多く輻射して食品の加熱効率が向上する。庫内空気の
撹拌により、温度の均一化が図れ食品の加熱むらを防止
できる。ファンが最適風速で回転するため、食品表面の
乾燥を防止できる。第1〜第3実施例では、庫内空気の
拡散によるリークも排気口の位置に脱臭触媒が設けてあ
るので、庫外に排出される調理中に発生する臭気に対し
ても、効率のよい分解除去が可能である。
As described above, according to each of the embodiments, since the deodorizing catalyst is provided on the ceiling of the refrigerator, efficient deodorization is possible in both oven cooking and grill cooking. Since it is deodorized by forcedly or naturally stirring the air in the refrigerator, the residual odor in the refrigerator can also be removed. Since the heater for cooking and the heater for heating the deodorizing catalyst are both used, the cost is low, the energy is wasted little, and the power is saved. The heating of the deodorizing catalyst is performed at the same time as the cooking is started, and moreover, since it is quick and can be maintained at the optimum temperature for the deodorizing catalyst,
Catalyst deodorization can be performed efficiently. Since a ceramic-based material is mainly used for the coating of the deodorizing catalyst, more far infrared rays are radiated to improve the heating efficiency of food. By stirring the air in the refrigerator, the temperature can be made uniform and uneven heating of the food can be prevented. Since the fan rotates at the optimum wind speed, it is possible to prevent the food surface from drying. In the first to third embodiments, since the deodorizing catalyst is provided at the position of the exhaust port even for leaks due to the diffusion of the air in the refrigerator, it is efficient even for the odor generated during cooking discharged to the outside of the refrigerator. It can be removed by decomposition.

【0035】以上の効果により従来例に比べて、高脱臭
力を有し、優れた加熱調理装置を提供することができ
る。
Due to the above effects, it is possible to provide an excellent cooking apparatus having a high deodorizing power as compared with the conventional example.

【0036】なお、上述の各実施例は、オーブングリル
レンジに適用した場合について述べたが、本発明は、電
気オーブン、オーブントースタ等、その他の加熱調理器
にも適用することができる。
Although each of the above-described embodiments has been described as applied to an oven grill range, the present invention can also be applied to other heating cookers such as an electric oven and an oven toaster.

【0037】[0037]

【発明の効果】以上説明したように、本発明によれば、
第1に、赤外線透過性を有する脱臭触媒を表面部に担持
した調理物加熱用の発熱体を調理室の天井部に設置した
ため、脱臭触媒の加熱が調理開始と同時に迅速に行わ
れ、臭気を含む調理室内の空気が温風の自然対流により
撹拌されてその活性化された脱臭触媒に接触し効率のよ
い脱臭を行うことができる。
As described above, according to the present invention,
First, since the heating element for heating the cooking product, which carries the deodorizing catalyst having infrared transparency on the surface, is installed on the ceiling of the cooking chamber, the heating of the deodorizing catalyst is quickly performed at the same time as the cooking is started, and the odor is eliminated. The air in the cooking chamber containing it is stirred by the natural convection of warm air and comes into contact with the activated deodorizing catalyst, and efficient deodorization can be performed.

【0038】第2に、赤外線透過性を有する脱臭触媒を
表面部に担持した調理物加熱用の発熱体を調理室の天井
部に設置し、さらに脱臭触媒の温度が活性化温度に達し
たのち調理室内の空気を発熱体の位置で風速0.5〜
3.0m/secになるように撹拌するファンを設けたた
め、脱臭触媒が迅速に加熱されて活性化されたあと、臭
気を含む調理室内の空気がファンの回転による強制対流
により撹拌されてその調理室内空気と脱臭触媒との接触
回数が増え、一層効率のよい脱臭を行うことができる。
また、調理室内温度の低下が起ることなく温度の均一化
が図られて調理物の加熱むらが防止されるとともにその
表面が温風で乾燥して外観及び食味を損うことがない。
Secondly, a heating element for heating a cooking product, which has a deodorizing catalyst having an infrared transmitting property on its surface, is installed on the ceiling of the cooking chamber, and after the temperature of the deodorizing catalyst reaches the activation temperature. The air velocity in the cooking chamber is 0.5 ~ at the position of the heating element.
Since a fan that stirs up to 3.0 m / sec is provided, the deodorizing catalyst is quickly heated and activated, and then the air in the cooking chamber containing the odor is stirred by forced convection due to the rotation of the fan to cook it. The number of times of contact between the indoor air and the deodorizing catalyst is increased, and more efficient deodorization can be performed.
In addition, the temperature of the cooking chamber is not lowered, the temperature is made uniform, uneven heating of the food is prevented, and the surface of the food is not dried by warm air to deteriorate the appearance and taste.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係る加熱調理装置の第1実施例を示す
外観斜視図である。
FIG. 1 is an external perspective view showing a first embodiment of a heating and cooking device according to the present invention.

【図2】図1のA−A線断面図である。FIG. 2 is a sectional view taken along the line AA of FIG.

【図3】図1のB−B線断面図である。FIG. 3 is a sectional view taken along line BB of FIG.

【図4】図2における触媒担持ヒータを一部破断して示
す拡大図である。
FIG. 4 is an enlarged view showing the catalyst-carrying heater in FIG. 2 with a part thereof cut away.

【図5】図3における排気口部分の構造を拡大して示す
斜視図である。
5 is an enlarged perspective view showing a structure of an exhaust port portion in FIG.

【図6】第1実施例において、ファンによる風速と脱臭
効率及び食品の乾燥度との関係を示す図である。
FIG. 6 is a diagram showing the relationship between the wind speed by the fan, the deodorizing efficiency, and the dryness of food in the first embodiment.

【図7】第1実施例において、グリル調理の場合の触媒
の温度、ヒータへの通電量、ファンへの通電率及び脱臭
効率の経時変化を示す図である。
FIG. 7 is a diagram showing changes with time of catalyst temperature, heater energization amount, fan energization ratio, and deodorization efficiency in the case of grill cooking in the first embodiment.

【図8】第1実施例において、庫内脱臭効率の経時変化
を比較例とともに示す図である。
FIG. 8 is a view showing a change over time in deodorization efficiency in the refrigerator in the first example together with a comparative example.

【図9】第1実施例において、庫外にリークした臭気濃
度の経時変化を比較例とともに示す図である。
FIG. 9 is a diagram showing a time-dependent change in the odor concentration leaked outside the refrigerator in the first example together with a comparative example.

【図10】第1実施例において、オーブン調理の場合の
触媒の温度、ヒータへの通電量、ファンへの通電率及び
脱臭効率の経時変化を示す図である。
FIG. 10 is a diagram showing changes with time of catalyst temperature, heater energization amount, fan energization rate, and deodorization efficiency in the case of oven cooking in the first example.

【図11】比較例3におけるグリル調理の場合の触媒の
温度、ヒータへの通電量、ファンへの通電率及び脱臭効
率の経時変化を示す図である。
FIG. 11 is a diagram showing changes over time in catalyst temperature, heater energization amount, fan energization rate, and deodorization efficiency in the case of grill cooking in Comparative Example 3.

【図12】比較例4におけるグリル調理の場合の触媒の
温度、ヒータへの通電量、ファンへの通電率及び脱臭効
率の経時変化を示す図である。
FIG. 12 is a diagram showing changes over time in catalyst temperature, heater energization amount, fan energization rate, and deodorization efficiency in the case of grill cooking in Comparative Example 4.

【図13】本発明の第2実施例における排気口部分の構
造を示す図である。
FIG. 13 is a diagram showing a structure of an exhaust port portion according to a second embodiment of the present invention.

【図14】本発明の第3実施例における排気口部分の構
造を示す図である。
FIG. 14 is a diagram showing a structure of an exhaust port portion according to a third embodiment of the present invention.

【図15】本発明の第4実施例を示す縦断面図である。FIG. 15 is a vertical sectional view showing a fourth embodiment of the present invention.

【図16】第4実施例において、オーブン調理の場合の
触媒の温度、ヒータへの通電量及び脱臭効率の経時変化
を示す図である。
FIG. 16 is a diagram showing changes over time in catalyst temperature, heater energization amount, and deodorization efficiency in the case of oven cooking in the fourth example.

【符号の説明】[Explanation of symbols]

2 調理室 7 食品(被調理物) 9 排気口 10 触媒担持ヒータ(発熱体) 13 脱臭触媒 16 排気ダクト 17 ファン 19 オーブンヒータ 2 Cooking room 7 Food (stuff to be cooked) 9 Exhaust port 10 Catalyst carrying heater (heating element) 13 Deodorizing catalyst 16 Exhaust duct 17 Fan 19 Oven heater

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 赤外線透過性を有する脱臭触媒を表面部
に担持した調理物加熱用の発熱体を、調理室の天井部に
設置してなることを特徴とする加熱調理装置。
1. A heating and cooking apparatus comprising a heating element for heating a cooking product, the heating element having a deodorizing catalyst having infrared transparency carried on a surface thereof, installed on a ceiling of a cooking chamber.
【請求項2】 赤外線透過性を有する脱臭触媒を表面部
に担持し調理室の天井部に設置された調理物加熱用の発
熱体と、前記脱臭触媒の温度が活性化温度に達したのち
前記調理室内の空気を当該発熱体の位置で風速0.5〜
3.0m/secになるように撹拌するファンとを有するこ
とを特徴とする加熱調理装置。
2. A heating element for heating a cooking product, which is mounted on the ceiling of a cooking chamber and has a deodorizing catalyst having infrared transparency supported on its surface, and the temperature of the deodorizing catalyst reaches an activation temperature and then The air velocity in the cooking chamber is 0.5-at the position of the heating element.
A cooking device characterized by having a fan that agitates so as to achieve 3.0 m / sec.
JP32580991A 1991-12-10 1991-12-10 Heating cooking apparatus Pending JPH05157252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32580991A JPH05157252A (en) 1991-12-10 1991-12-10 Heating cooking apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32580991A JPH05157252A (en) 1991-12-10 1991-12-10 Heating cooking apparatus

Publications (1)

Publication Number Publication Date
JPH05157252A true JPH05157252A (en) 1993-06-22

Family

ID=18180842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP32580991A Pending JPH05157252A (en) 1991-12-10 1991-12-10 Heating cooking apparatus

Country Status (1)

Country Link
JP (1) JPH05157252A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6472640B2 (en) * 1999-09-13 2002-10-29 Maytag Corporation Preheat system for convection cooking appliance
KR101306428B1 (en) * 2012-11-15 2013-09-09 이영희 Cooking device with pyrolysis function
WO2013187561A1 (en) * 2012-06-12 2013-12-19 Lee Younghee Oven having pyrolysis function
WO2018155827A1 (en) * 2017-02-23 2018-08-30 이영희 Cooking device having partitioning plate for controlling radiant heat

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6472640B2 (en) * 1999-09-13 2002-10-29 Maytag Corporation Preheat system for convection cooking appliance
WO2013187561A1 (en) * 2012-06-12 2013-12-19 Lee Younghee Oven having pyrolysis function
RU2609508C2 (en) * 2012-06-12 2017-02-02 Ёунхее ЛИ Oven with pyrolysis function
KR101306428B1 (en) * 2012-11-15 2013-09-09 이영희 Cooking device with pyrolysis function
WO2018155827A1 (en) * 2017-02-23 2018-08-30 이영희 Cooking device having partitioning plate for controlling radiant heat

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