JPS6018936B2 - moisture sensing element - Google Patents
moisture sensing elementInfo
- Publication number
- JPS6018936B2 JPS6018936B2 JP50119524A JP11952475A JPS6018936B2 JP S6018936 B2 JPS6018936 B2 JP S6018936B2 JP 50119524 A JP50119524 A JP 50119524A JP 11952475 A JP11952475 A JP 11952475A JP S6018936 B2 JPS6018936 B2 JP S6018936B2
- Authority
- JP
- Japan
- Prior art keywords
- humidity
- sensitive resistor
- heating element
- sensitive
- resistance heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Electric Ovens (AREA)
Description
【発明の詳細な説明】
本発明は感湿素子の特性回復方法、特に、感溢抵抗体セ
ラミックスの表面に放射熱エネルギーを照射して、その
特性を容易に回復することのできる方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for restoring the characteristics of a moisture-sensitive element, and in particular to a method for easily restoring the characteristics of a moisture-sensitive resistor ceramic by irradiating the surface with radiant heat energy. be.
近年、調理に電子レンジやオーブンなどが広く利用され
るようになって来ているが、現用の蝿子レンジは、加熱
時間の設定がむずかしい。In recent years, microwave ovens and ovens have become widely used for cooking, but it is difficult to set the heating time for current microwave ovens.
そのため、タイマー早見表やクッキングカードなどの参
照表によって、加熱時間を設定するのが通例である。し
かし、参照表に書かれている食品の種類や量には限度が
ある。また、実際に加熱時間を決定する要素となる、食
品の初期温度や技終温度などが十分考慮されていないの
で、調理ミスも少なくないのが現状である。これらの電
子レンジやオーブンなどにおいて、食品から出る水分を
制御して調理すると、多くのメニューに対して調理ミス
が少なく、使い勝手のよいものが得られる。ところが、
このような用途では、食品などから発生する油蒸気やそ
の他の有機物、さらにはそれから飛散する油成分などが
感湿素子の表面に付着し、短時間にその感度を低下させ
てしまう。Therefore, it is customary to set the heating time using a reference table such as a timer quick reference table or a cooking card. However, there are limits to the types and amounts of foods listed in the reference table. Furthermore, since the initial temperature and final temperature of the food, which are the factors that actually determine the heating time, are not taken into consideration, there are many cooking mistakes. By controlling the amount of moisture that comes out of food in these microwave ovens and ovens, many menus can be cooked with fewer mistakes and are easier to use. However,
In such applications, oil vapor and other organic substances generated from foods and the like, as well as oil components scattered from them, adhere to the surface of the moisture sensing element, reducing its sensitivity in a short period of time.
さらに、調理機器以外の分野においても、感湿素子は、
その表面が周囲雰囲気と直接に触れるため、油分子をは
じめとする汚染物質が付着しやすいものである。本発明
はこのような欠点を除去することのできる感湿素子の特
性回復方法を提供することを目的とするものである。Furthermore, moisture sensing elements are used in fields other than cooking equipment.
Because its surface is in direct contact with the surrounding atmosphere, it is susceptible to contaminants such as oil molecules. An object of the present invention is to provide a method for restoring the characteristics of a moisture-sensitive element that can eliminate such drawbacks.
すなわち、本発明は、感湿抵抗体セラミックスの周囲の
近傍に空間を介して抵抗発熱体を配置し、抵抗発熱体か
ら放射される熱エネルギーをその表面に照射して、油成
分を燃焼除去できるようにしたものである。感湿抵抗体
セラミックスは、たとえば金属酸化物、化合物半導体の
耐熱性材料を利用したもので、湿度によって電気抵抗の
変化するものである。That is, in the present invention, a resistance heating element is arranged near the periphery of the humidity-sensitive resistor ceramic through a space, and the surface thereof is irradiated with thermal energy radiated from the resistance heating element, thereby making it possible to burn off oil components. This is how it was done. Humidity-sensitive resistor ceramics utilize heat-resistant materials such as metal oxides and compound semiconductors, and have electrical resistance that changes depending on humidity.
抵抗発熱体には金属や酸化物半導体などを用いる。第２
図はその感湿素子の一例を示すもので、１，２はそれぞ
れＡｑ−Ｐｄ系金属からなる電極、３はＣｒ２０３系セ
ラミックスからなる感湿抵抗体で、ＣＱ０３またはそれ
を主成分とする粉末の成型体を、１３００℃で２時間焼
成したものを用いている。Metals, oxide semiconductors, etc. are used for the resistance heating element. Second
The figure shows an example of the humidity-sensitive element. Reference numbers 1 and 2 are electrodes made of Aq-Pd metal, and 3 is a humidity-sensitive resistor made of Cr203 ceramic. A molded body fired at 1300° C. for 2 hours is used.
この感湿抵抗体セラミックス３は１２肌×１４肌ｘｏ．
３側の寸法の角板状のものである。４は抵抗発熱体で、
その外観寸法は中１３側、長さ１５個である。This moisture-sensitive resistor ceramic 3 has 12 skins x 14 skins x o.
It is a rectangular plate shape with three side dimensions. 4 is a resistance heating element,
Its external dimensions are 13 pieces in the middle and 15 pieces in length.
５は支持台で、感湿抵抗体セラミックス３と抵抗発熱体
４とを支持するものである。Reference numeral 5 denotes a support base for supporting the humidity-sensitive ceramic resistor 3 and the resistance heating element 4.
６はリ−ド端子である。6 is a lead terminal.
このような感湿素子を実際に使用すると、感湿抵抗体セ
ラミックス３の表面に油成分などが付着し、短時間にそ
の感度が低下してしまう。When such a humidity sensing element is actually used, oil components and the like adhere to the surface of the humidity sensing resistor ceramic 3, resulting in a decrease in its sensitivity in a short period of time.
このような感度の低下を生じたときには、抵抗発熱体４
に通電して発熱させ、その放射熱エネルギーを感湿抵抗
体セラミックス３に照射する。これにより、その表面に
付着している油成分などが短時間で確実に除去され、そ
の特性が回復する。放射熱エネルギーによる加熱は、感
湿抵抗体セラミックス３をきわめて短時間に数１００℃
以上の温度に高めることができ、上述の素子表面の付着
物を容易にかつ短時間に燃焼徐去することができる。When such a decrease in sensitivity occurs, the resistance heating element 4
is energized to generate heat, and the radiant heat energy is irradiated to the humidity-sensitive resistor ceramic 3. As a result, oil components adhering to the surface are reliably removed in a short period of time, and its properties are restored. Heating by radiant heat energy heats the humidity-sensitive resistor ceramic 3 to several 100 degrees Celsius in an extremely short time.
The temperature can be raised to a temperature higher than that, and the above-mentioned deposits on the surface of the element can be easily and quickly burned off.
さらに、上述の抵抗発熱体４を利用することによって、
通常の使用状態において、感湿抵抗体セラミックス３の
表面の相対湿度レベルを基準化することができる。Furthermore, by using the above-mentioned resistance heating element 4,
Under normal usage conditions, the relative humidity level on the surface of the humidity-sensitive resistor ceramic 3 can be standardized.
具体的に説明すると、例えば、電子レンジの庫内に感湿
素子を設けて、庫内の湿度変化を感湿抵抗体で調べた。
その結果を第１図に示す。第１図は空気中の湿度が４０
％、５０％、６０％の各相対湿度において、電子レンジ
で水１そを加熱した時の感湿抵抗体セラミックス３の抵
抗変化を示す。これから明らかなように、空気中の湿度
によって感湿抵抗体３の抵抗変化が大きく異なる。その
ため、感湿抵抗体セラミックス３の感湿抵抗変化による
相対湿度検知を利用して鰭子レンジの加熱動作を制御す
ることは技術的にむずかしい。ところが、空気中の湿度
が日時によって変化しても、抵抗発熱体４に電流を流し
、感湿抵抗体セラミックス３を加熱することによって、
素子表面の相対湿度を低下させ、素子表面の相対湿度を
基準相対湿度レベルとして設定すれば、この問題′点を
解決することができる。前記基準相対湿度レベルは、通
常、常温より若干低いところに設定すればよい。このよ
うにして素子表面の相対湿度レベルの標準化をすること
により、時によって変化している湿度も、一定基準レベ
ルにあわせられる。第３図は、水１夕を電子レンジで加
熱した時の、感湿抵抗体セラミックス３の、抵抗変化を
示したものである。Specifically, for example, a humidity sensing element was installed inside a microwave oven, and changes in humidity inside the microwave oven were investigated using a humidity sensing resistor.
The results are shown in FIG. Figure 1 shows that the humidity in the air is 40
%, 50%, and 60% relative humidity, and shows the resistance change of the humidity-sensitive resistor ceramic 3 when water is heated in a microwave oven. As is clear from this, the resistance change of the humidity-sensitive resistor 3 varies greatly depending on the humidity in the air. Therefore, it is technically difficult to control the heating operation of the fin range using relative humidity detection based on a change in the humidity-sensitive resistance of the humidity-sensitive resistor ceramic 3. However, even if the humidity in the air changes depending on the date and time, by passing current through the resistance heating element 4 and heating the humidity-sensitive resistor ceramic 3,
This problem can be solved by lowering the relative humidity on the element surface and setting the relative humidity on the element surface as a reference relative humidity level. The reference relative humidity level may normally be set at a level slightly lower than normal temperature. By standardizing the relative humidity level on the surface of the element in this way, even humidity that varies from time to time can be brought to a constant reference level. FIG. 3 shows the change in resistance of the humidity-sensitive resistor ceramic 3 when water is heated in a microwave oven.
すなわち湿度レベルの標準化をすることにより、外気の
湿度には関係なく一定の特性を得ることができる。また
第４図は同じ条件で測定した感湿抵抗体の湿度−電気抵
抗特性を示す。第５図は、第２図の感湿素子を用いた感
湿装置の構成の一例を示すもので、１１は感湿抵抗体セ
ラミックス３の出力により湿度を検知する湿度検知回路
、１２は端子１３に加わる基準湿度情報と湿度検知回路
１１の差をとる引算回路、１４はその差信号を増中する
増中回路、１５は外気湿度を補償する電流を抵抗発熱体
４に流す電流保持回路、１６はしベル検出回路で、抵抗
発熱体４を一時的に加熱し、感緑抵抗体セラミックス３
等に付着した油などに燃焼除去した後、再び、元の補償
電流を抵抗発熱体４に供聯合するように制御する働きを
する。That is, by standardizing the humidity level, constant characteristics can be obtained regardless of the humidity of the outside air. Further, FIG. 4 shows the humidity-electrical resistance characteristics of the humidity-sensitive resistor measured under the same conditions. FIG. 5 shows an example of the configuration of a humidity sensing device using the humidity sensing element shown in FIG. 14 is an intensifying circuit that amplifies the difference signal; 15 is a current holding circuit that flows a current to compensate for the outside air humidity through the resistance heating element 4; 16 The bell detection circuit temporarily heats the resistance heating element 4 and causes the green-sensitive resistor ceramic 3 to heat up.
After burning and removing the oil adhering to the surface, etc., it functions to control the original compensation current to be coupled to the resistance heating element 4 again.
次にこの装置の動作を説明する。Next, the operation of this device will be explained.
湿度検知回路１１で検出した湿度情報と、端子１３に加
わる基準湿度情報を比較し、抵抗発熱体４に流す電流を
セットし、その電流値を電流保持回路１５で保持する。
今、たとえば空気中の相対湿度がかりに５０％とすると
、調理用湿度制御素子の抵抗発熱体４がすこし加熱され
る。感湿抵抗体セラミックス３は、加熱されて基準湿度
の状態に抵抗変化をする。このようにして抵抗発熱体に
電流を流し、感湿制御素子の基準湿度レベルをあわすこ
とができる。そして、調理時に発生する油成分が感湿抵
抗体セラミックス３を付着した場合、抵抗発熱体４を利
用して、付着した油成分を短時間で加熱燃焼除去し、そ
の特性を再生する。The humidity information detected by the humidity detection circuit 11 and the reference humidity information applied to the terminal 13 are compared, the current to be passed through the resistance heating element 4 is set, and the current value is held by the current holding circuit 15.
For example, if the relative humidity in the air is 50%, the resistance heating element 4 of the cooking humidity control element will be slightly heated. The humidity sensitive resistor ceramic 3 is heated and changes its resistance to the reference humidity state. In this way, current can be passed through the resistance heating element to match the reference humidity level of the humidity-sensitive control element. When oil components generated during cooking adhere to the humidity-sensitive resistor ceramic 3, the attached oil components are heated and burned away in a short time using the resistance heating element 4, and its characteristics are regenerated.
そして、油成分を加熱甥窓暁除去するに当り、抵抗発熱
体３からの放射熱エネルギーによって加熱するため、均
一に加熱することができる。そのため、マイクロクラツ
クおよび熱ショックによる特性変化は全く受けない。第
６図は、水が精醸した時の脱着応答性を示し、曲線Ａは
従来の感湿素子の特性を、また曲線Ｂは実施例の特性を
それぞれ示すものであり、抵抗発熱体に瞬時に電流を流
して加熱してやると、水の脱着応答性がよくなる。When removing the oil component by heating, it is heated by the radiant heat energy from the resistance heating element 3, so that it can be heated uniformly. Therefore, it is completely free from changes in characteristics due to microcracks and thermal shock. Fig. 6 shows the desorption response when water is concentrated, curve A shows the characteristics of the conventional moisture sensing element, and curve B shows the characteristics of the example. When an electric current is applied to heat the material, the water desorption response becomes better.
また上託した感熱素子は電子レンジおよびオーブンのみ
ならず、湿度制御関係に中広い用途が考えられる。In addition, the heat-sensitive element we have entrusted can be used not only in microwave ovens and ovens, but also in a wide range of applications related to humidity control.
上記実施例より明らかなように、本発明によれば感湿抵
抗体の周囲に設けた抵抗発熱体の放射熱エネルギーによ
り、使用時、その表面に付着した油成分などの汚染物質
を短時間に除去できるため、常に正確な湿度検出するこ
とができる。As is clear from the above embodiments, according to the present invention, the radiant heat energy of the resistance heating element provided around the humidity sensitive resistor quickly removes contaminants such as oil components adhering to the surface of the moisture sensitive resistor during use. Since it can be removed, accurate humidity detection is possible at all times.
さらに、本発明では、感湿抵抗体セラミックスの周囲に
設けた抵抗発熱体より空間を介して前記感湿抵抗体セラ
ミックスを加熱するため均一加熱ができ、マイクロクラ
ックおよび熱ショックによる特性変化を防止できる格別
の効果が奏される。Furthermore, in the present invention, since the resistance heating element provided around the humidity-sensitive resistor ceramic heats the humidity-sensitive resistor ceramic through the space, uniform heating can be achieved, and characteristic changes due to microcracks and thermal shock can be prevented. A special effect is produced.
第１図は感湿素子の特性図、第２図イは本発明にかかる
感湿素子の特性回復方法の−実施例を説明するための要
部を示す斜視図、同図口はその全体の構造を示す斜視図
、第３図および第４図はそれぞれの特性図、第５図はそ
の感湿素子を用いた感湿装置のブロック線図、第６図は
その特性図である。
３・・…・感湿抵抗セラミックス、４・・・…抵抗発熱
体。
第１図
第２図
第３図
第４図
第５図
第６図FIG. 1 is a characteristic diagram of a moisture-sensitive element, FIG. A perspective view showing the structure, FIGS. 3 and 4 are respective characteristic diagrams, FIG. 5 is a block diagram of a humidity sensing device using the humidity sensing element, and FIG. 6 is a characteristic diagram thereof. 3... Moisture-sensitive resistance ceramics, 4... Resistance heating element. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6
Claims (1)
て抵抗発熱体を配置してなり、この抵抗発熱体からの放
射熱エネルギーを前記感湿抵抗体セラミツクスの表面に
照射し、前記感湿抵抗体の表面の付着物を加熱燃焼させ
て除去することを特徴とする感湿素子の特性回復方法。1 A resistive heating element is arranged near the periphery of the humidity-sensitive resistor ceramic with a space therebetween, and radiant heat energy from the resistive heating element is irradiated onto the surface of the humidity-sensitive resistor ceramic, and the humidity-sensitive resistor is heated. A method for restoring characteristics of a moisture-sensitive element, characterized by removing deposits on the surface of a body by heating and burning them.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50119524A JPS6018936B2 (en) | 1975-10-02 | 1975-10-02 | moisture sensing element |
| US05/727,380 US4080564A (en) | 1975-10-02 | 1976-09-27 | Humidity sensitive resistor device |
| CA262,332A CA1047168A (en) | 1975-10-02 | 1976-09-29 | Humidity sensitive resistor device |
| GB40702/76A GB1565554A (en) | 1975-10-02 | 1976-09-30 | Humidity sensors |
| FR7629687A FR2336777A1 (en) | 1975-10-02 | 1976-10-01 | HUMIDITY SENSITIVE RESISTANCE DEVICE |
| DE2644883A DE2644883C3 (en) | 1975-10-02 | 1976-10-01 | Moisture sensitive resistance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50119524A JPS6018936B2 (en) | 1975-10-02 | 1975-10-02 | moisture sensing element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5243480A JPS5243480A (en) | 1977-04-05 |
| JPS6018936B2 true JPS6018936B2 (en) | 1985-05-13 |
Family
ID=14763399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50119524A Expired JPS6018936B2 (en) | 1975-10-02 | 1975-10-02 | moisture sensing element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6018936B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5432848A (en) * | 1977-08-17 | 1979-03-10 | Matsushita Electric Ind Co Ltd | Cooking instrument |
| JPS5442597U (en) * | 1977-08-30 | 1979-03-22 | ||
| JPS5443347A (en) * | 1977-09-13 | 1979-04-05 | Matsushita Electric Ind Co Ltd | High frequency heating apparatus |
| JPS5489345A (en) * | 1977-12-27 | 1979-07-16 | Matsushita Electric Ind Co Ltd | Automatic microwave oven |
| JPS61219721A (en) * | 1985-03-25 | 1986-09-30 | Central Glass Co Ltd | Continuous production of ba-ferrite fine powder |
| DE102004062737A1 (en) * | 2004-12-27 | 2006-07-13 | Rational Ag | Cooking appliance containing at least one gas sensor array, as well as a method for cooking with this cooking appliance, a method for cleaning this cooking appliance and a sampling system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS503685A (en) * | 1973-05-11 | 1975-01-16 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5330278Y2 (en) * | 1971-08-09 | 1978-07-28 |
-
1975
- 1975-10-02 JP JP50119524A patent/JPS6018936B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS503685A (en) * | 1973-05-11 | 1975-01-16 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5243480A (en) | 1977-04-05 |
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