JPH0213842Y2 - - Google Patents
Info
- Publication number
- JPH0213842Y2 JPH0213842Y2 JP1982005890U JP589082U JPH0213842Y2 JP H0213842 Y2 JPH0213842 Y2 JP H0213842Y2 JP 1982005890 U JP1982005890 U JP 1982005890U JP 589082 U JP589082 U JP 589082U JP H0213842 Y2 JPH0213842 Y2 JP H0213842Y2
- Authority
- JP
- Japan
- Prior art keywords
- food
- opening
- microwave
- infrared detector
- cover
- 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
- 235000013305 food Nutrition 0.000 claims description 40
- 238000010438 heat treatment Methods 0.000 claims description 17
- 230000010355 oscillation Effects 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 5
- 239000008267 milk Substances 0.000 description 18
- 210000004080 milk Anatomy 0.000 description 18
- 235000013336 milk Nutrition 0.000 description 18
- 238000009835 boiling Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 239000010794 food waste Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
【考案の詳細な説明】
本考案は、食品からの赤外線を赤外線検出器に
て検出することにより食品温度を検知し、該食品
温度に基づいてマイクロ波加熱を制御する電子レ
ンジに関する。[Detailed Description of the Invention] The present invention relates to a microwave oven that detects the temperature of food by detecting infrared rays from the food with an infrared detector, and controls microwave heating based on the temperature of the food.
従来のこの種電子レンジは第１図に示す通りで
あり、１は加熱室、２は該加熱室内のトレイ３の
略中央に載置された食品、例えば牛乳壜に入れら
れた牛乳である。４は斯る食品２を加熱するため
のマイクロ波を発振するマグネトロン、５は上記
加熱室１の天井１′の上方に配置され、斯る天井
１′に穿設された開口６を通して食品２からの赤
外線を検知し食品２の温度に応じた信号を出力す
る赤外線検出器、７は該検出器を冷却するための
冷却風を発生する検出器用ブロワで、検出器５冷
却後の風は開口６を通して下方へ吐出される。８
は上記開口６に嵌合されマイクロ波の通過を遮断
するマイクロ波遮断リング、９は該リングを軸と
して回動自在に装着されマイクロ波を撹拌するた
めのスターラで、該スターラはブロワ１０から発
生したマグネトロン冷却風にて回動される。１１
はマイクロ波透過性のスターラカバーで、該カバ
ーにより、上記加熱室１が下側の食品配置室と上
側のスターラ配置室とに区画される。ここで、上
記食品２は上記加熱室１内の更には食品配置室内
にてトレイ３上に載置されるのであり、又上記ス
ターラ９は上記加熱室１内のスターラ配置室内に
て回動自在に装着されている。１２は上記赤外線
検出器５からの温度信号に基づいて食品温度を検
知し食品２が所望温度に達した時マイクロ波発振
を停止するなどして制御する制御部である。 A conventional microwave oven of this type is shown in FIG. 1, with reference numeral 1 a heating chamber, and 2 a food placed approximately in the center of a tray 3 within the heating chamber, such as milk in a milk bottle. 4 is a magnetron that oscillates microwaves for heating the food 2; 5 is placed above the ceiling 1' of the heating chamber 1; An infrared detector that detects infrared rays and outputs a signal according to the temperature of the food 2; 7 is a detector blower that generates cooling air to cool the detector; through which it is discharged downward. 8
9 is a microwave blocking ring that is fitted into the opening 6 and blocks the passage of microwaves; 9 is a stirrer that is rotatably mounted around the ring and stirs the microwave; the stirrer is generated from the blower 10; It is rotated by the magnetron cooling wind. 11
is a microwave-transparent stirrer cover, which divides the heating chamber 1 into a lower food placement chamber and an upper stirrer placement chamber. Here, the food 2 is placed on the tray 3 within the heating chamber 1 and further within the food placement chamber, and the stirrer 9 is rotatable within the stirrer placement chamber within the heating chamber 1. is installed on. Reference numeral 12 denotes a control section which detects the temperature of the food based on the temperature signal from the infrared detector 5 and controls by stopping microwave oscillation when the food 2 reaches a desired temperature.
而して、通常の加熱状態では、開口６を通つて
下方への送風がなされているから、食品２から発
生する水蒸気、食品滓が赤外線検出器５へ到達す
るのが阻止されており、従つて赤外線検出器５の
汚染が防止されている。 In a normal heating state, air is blown downward through the opening 6, so water vapor and food residue generated from the food 2 are prevented from reaching the infrared detector 5. Therefore, contamination of the infrared detector 5 is prevented.
しかるに、食品２が破線の如く赤外線検出器５
の所望赤外線検出視野からずれて置かれている
と、赤外線検出器５はトレイ３からの赤外線を殆
ど検知することとなる。ここにトレイ３の温度は
殆ど上昇しないから、制御部１２は食品温度がな
かなか所望温度に到達しないと判断して加熱を異
常に長く実行してしまう。この様な場合、食品２
が上述の如き牛乳であつて口の狭い牛乳壜に入つ
ていると、牛乳壜の口から牛乳が急に吹き出し所
謂突沸状態が生じてしまう。すると、この突沸し
た牛乳は開口６からの送風にも拘わらず開口６を
通つて上昇し、従つて赤外線検出器５が汚染され
て食品温度に検知誤差が生じるという欠点があ
る。 However, the food 2 is detected by the infrared detector 5 as shown by the broken line.
If the infrared detector 5 is placed out of the desired infrared detection field of view, the infrared detector 5 will detect most of the infrared rays from the tray 3. Since the temperature of the tray 3 hardly rises at this time, the control unit 12 determines that the food temperature will not reach the desired temperature and continues heating for an abnormally long time. In this case, food 2
If the above-mentioned milk is placed in a milk bottle with a narrow mouth, the milk will suddenly gush out from the mouth of the milk bottle, resulting in a so-called bumping condition. Then, the boiling milk rises through the opening 6 despite the air being blown from the opening 6, and therefore the infrared detector 5 is contaminated, resulting in a detection error in food temperature.
本考案は斯る点に鑑みてなされたもので、以下
本考案実施例電子レンジを第２図及び第３図に基
づいて説明する。尚、第１図と同一部分には同一
符号を記してその説明を省略する。 The present invention has been devised in view of this point, and a microwave oven according to an embodiment of the present invention will be described below with reference to FIGS. 2 and 3. Note that the same parts as in FIG. 1 are denoted by the same reference numerals, and the explanation thereof will be omitted.
１３はスターラカバー１１で加熱室１の下側に
区画された食品配置室の右側壁１″において、斯
る食品配置室の天井即ちスターラカバー１１から
所定距離だけ下方に離間した位置に突設された開
口、１４は該開口を覆うようにして上記右側壁
１″の外面に固定された断面くの字状の覆体で、
該覆体の上端１４′は上記開口１３の上端１３′よ
り上方に位置すると共に上記覆体１４の下端１
４″は上記開口１３の下端１３″と一致している。
１５は上記開口１３の斜め上方に位置するように
上記覆体１４の上面１６に穿設された開口に嵌合
固定され、マイクロ波の通過を遮断するマイクロ
波遮断リング、１７は上述と同様の赤外線検出器
であるが、この場合検出器１７は食品２に対して
斜め上方に位置している。１８は上記検出器１７
を収納する収納体で、該収納体の検出器１７前面
には検出器１７の赤外線検出視野を限定する小孔
１９が穿設されている。そして、赤外線検出器１
７の視野は上記リング１５及び開口１３を介して
トレイ３の中央に置かれた食品２を含むようにな
つている。この場合、食品２が牛乳であると、上
記視野には牛乳が直接入らず牛乳壜だけが入るよ
うになるが、赤外線検出器１７は牛乳壜を介して
実質的に牛乳からの赤外線を検知することとな
る。２０は上記収納体１８と上記リング１５の上
部を含む外筐で、該外筐には上記検出器用ブロワ
７からの風がダクト２１を介して供給される。そ
して、この風は収納体１８を介して検出器１７を
冷却し、斯る冷却後の風の一部はリング１５を通
つて加熱室１内に吐出され、残りは外筐２０に穿
設された小孔群２２，２２…を通つて吐出され
る。 13 is provided on the right side wall 1'' of the food placement chamber partitioned below the heating chamber 1 by the stirrer cover 11, at a position spaced downward by a predetermined distance from the ceiling of the food placement chamber, that is, from the stirrer cover 11. The opening 14 is a cover with a dogleg-shaped cross section fixed to the outer surface of the right side wall 1'' so as to cover the opening,
The upper end 14' of the cover is located above the upper end 13' of the opening 13, and the lower end 14' of the cover 14 is located above the upper end 13' of the opening 13.
4'' coincides with the lower end 13'' of the opening 13.
Reference numeral 15 indicates a microwave blocking ring which is fitted and fixed into an opening formed in the upper surface 16 of the cover 14 so as to be located diagonally above the opening 13, and blocks the passage of microwaves, and 17 is the same as described above. Although it is an infrared detector, in this case the detector 17 is located diagonally above the food 2. 18 is the above detector 17
A small hole 19 is bored in the front surface of the detector 17 of the housing to limit the infrared detection field of the detector 17. And infrared detector 1
The field of view 7 is adapted to include the food 2 placed in the center of the tray 3 via the ring 15 and the opening 13. In this case, if the food 2 is milk, the milk does not directly enter the field of view, only the milk bottle enters, but the infrared detector 17 substantially detects infrared rays from the milk through the milk bottle. That will happen. Reference numeral 20 denotes an outer casing that includes the storage body 18 and the upper part of the ring 15, and the wind from the detector blower 7 is supplied to the outer casing through a duct 21. This air cools the detector 17 through the storage body 18, and a part of the air after cooling is discharged into the heating chamber 1 through the ring 15, and the rest is emitted into the heating chamber 1 through the ring 15. It is discharged through the small hole groups 22, 22...
而して、上記右側壁１″において食品配置室の
天井であるスターラカバー１１の右側部分Ａから
上記開口１３の上端１３′までの間は、スターラ
カバー１１の周辺から垂下し上記赤外線検出器１
７前方の赤外線検出視野近傍まで至るように配置
された垂下体２３を形成している。 In the right side wall 1'', the area from the right side A of the stirrer cover 11, which is the ceiling of the food placement room, to the upper end 13' of the opening 13 hangs down from the periphery of the stirrer cover 11, and the infrared detector 1 is connected to the infrared detector 1.
7. A hanging body 23 is formed so as to extend to the vicinity of the infrared detection field of view in front.
この様に赤外線検出器１７を食品配置室の右側
壁１″外部に設けると、上述の如き突沸が生じて
も、斯る突沸の勢いは右側壁１″に向かうにつれ
て劣えるために、右側壁１″の開口１３から赤外
線検出器１７に突沸した牛乳が殆ど到達しない。
しかも、このように突沸の勢いが衰えた状態の突
沸牛乳を遮るものとして、上記垂下体２３が存在
し、且つ、上記突沸牛乳に対する経路を複雑とす
るものとして、上記開口１３の斜め上方に位置す
るように上記覆体１４の上面１６に固定されたマ
イクロ波遮断リング１５が存在し、而して、上記
赤外線検出器１７はこれら垂下体２３及びリング
１５の後方に位置する構成となつており、従つ
て、上記突沸牛乳は斯る赤外線検出器１７に一層
到達しないのである。更に、突沸した牛乳が右側
壁１″に付着しても、斯る牛乳は垂下体２３に阻
止されてリング１５側へ流れ込むことがないので
ある。 When the infrared detector 17 is installed outside the right side wall 1'' of the food storage chamber in this way, even if the above-mentioned bumping occurs, the force of the bumping decreases as it moves toward the right side wall 1''. Almost no milk that has bumped into the infrared detector 17 reaches the infrared detector 17 from the 1'' opening 13.
In addition, the hanging body 23 is present to block the boiling milk in a state where the force of boiling has weakened, and is located diagonally above the opening 13 to complicate the path for the boiling milk. There is a microwave blocking ring 15 fixed to the upper surface 16 of the cover 14 so that the infrared detector 17 is located behind the hanging body 23 and the ring 15. Therefore, the boiling milk will not reach the infrared detector 17. Furthermore, even if boiling milk adheres to the right side wall 1'', the milk will be blocked by the hanging body 23 and will not flow into the ring 15 side.
以上の説明から明らかな如く、本考案電子レン
ジによれば、食品配置室、該食品配置室内の食品
を加熱するためのマイクロ波を発振するマイクロ
波発振手段、上記食品配置室の側壁において斯る
食品配置室の天井から所定距離だけ下方に離間し
た位置に穿設された開口、該開口を上記食品配置
室の外側から覆う覆体、上記開口の斜め上方に位
置するように上記覆体に固定されたマイクロ波遮
断リング、上記食品配置室の外部に配置され上記
開口及びマイクロ波遮断リングを通して食品から
の赤外線を検知し、食品の温度に応じた信号を出
力する赤外線検出器、該赤外線検出器の出力に基
づいて上記マイクロ波発振手段の発振を制御する
制御部からなり、従つて赤外線検出器の汚染を顕
著に防止でき、食品温度を正確に検知することが
できる。 As is clear from the above description, the microwave oven of the present invention includes a food placement chamber, a microwave oscillation means for oscillating microwaves for heating food in the food placement chamber, and a side wall of the food placement chamber. an opening drilled at a position spaced a predetermined distance downward from the ceiling of the food placement room; a cover that covers the opening from outside the food placement room; and a cover fixed to the cover so as to be located diagonally above the opening. an infrared detector arranged outside the food placement chamber that detects infrared rays from the food through the opening and the microwave shielding ring, and outputs a signal according to the temperature of the food; The microwave oscillation means has a control section that controls the oscillation of the microwave oscillation means based on the output of the microwave oscillation means, so that contamination of the infrared detector can be significantly prevented and food temperature can be accurately detected.
第１図は従来の電子レンジの断面図、第２図は
本考案実施例電子レンジの断面図、第３図は同要
部断面図である。
１……加熱室、２……食品、４……マグネトロ
ン、１１……スターラカバー、１２……制御部、
１″……加熱室右側壁、１３……開口、１７……
赤外線検出器、２３……垂下体。
FIG. 1 is a sectional view of a conventional microwave oven, FIG. 2 is a sectional view of a microwave oven according to an embodiment of the present invention, and FIG. 3 is a sectional view of the same essential parts. 1... Heating chamber, 2... Food, 4... Magnetron, 11... Stirrer cover, 12... Control unit,
1″...Right side wall of heating chamber, 13...Opening, 17...
Infrared detector, 23... hanging body.
Claims (1)
ためのマイクロ波を発振するマイクロ波発振手
段、上記食品配置室の側壁において斯る食品配置
室の天井から所定距離だけ下方に離間した位置に
穿設された開口、該開口を上記食品配置室の外側
から覆う覆体、上記開口の斜め上方に位置するよ
うに上記覆体に固定されたマイクロ波遮断リン
グ、上記食品配置室の外部に配置され上記開口及
びマイクロ波遮断リングを通して食品からの赤外
線を検知し、食品の温度に応じた信号を出力する
赤外線検出器、該赤外線検出器の出力に基づいて
上記マイクロ波発振手段の発振を制御する制御部
を備えたことを特徴とする電子レンジ。 a food placement room; a microwave oscillation means for oscillating microwaves for heating food in the food placement room; a cover that covers the opening from the outside of the food placement chamber; a microwave blocking ring fixed to the cover so as to be positioned diagonally above the opening; An infrared detector that detects infrared rays from the food through the opening and the microwave blocking ring and outputs a signal according to the temperature of the food, and a control that controls the oscillation of the microwave oscillation means based on the output of the infrared detector. A microwave oven characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP589082U JPS58108309U (en) | 1982-01-19 | 1982-01-19 | microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP589082U JPS58108309U (en) | 1982-01-19 | 1982-01-19 | microwave oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58108309U JPS58108309U (en) | 1983-07-23 |
| JPH0213842Y2 true JPH0213842Y2 (en) | 1990-04-17 |
Family
ID=30018682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP589082U Granted JPS58108309U (en) | 1982-01-19 | 1982-01-19 | microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58108309U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980050561A (en) * | 1996-12-21 | 1998-09-15 | 구자홍 | Mounting structure of infrared sensor of microwave oven |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55112939A (en) * | 1979-02-23 | 1980-09-01 | Matsushita Electric Ind Co Ltd | High frequency heater |
-
1982
- 1982-01-19 JP JP589082U patent/JPS58108309U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55112939A (en) * | 1979-02-23 | 1980-09-01 | Matsushita Electric Ind Co Ltd | High frequency heater |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58108309U (en) | 1983-07-23 |
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