JPS5950018B2 - High frequency heating device - Google Patents
High frequency heating deviceInfo
- Publication number
- JPS5950018B2 JPS5950018B2 JP2914079A JP2914079A JPS5950018B2 JP S5950018 B2 JPS5950018 B2 JP S5950018B2 JP 2914079 A JP2914079 A JP 2914079A JP 2914079 A JP2914079 A JP 2914079A JP S5950018 B2 JPS5950018 B2 JP S5950018B2
- Authority
- JP
- Japan
- Prior art keywords
- heated
- infrared rays
- infrared
- high frequency
- heating chamber
- 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
- Electric Ovens (AREA)
- Radiation Pyrometers (AREA)
- Control Of High-Frequency Heating Circuits (AREA)
Description
【発明の詳細な説明】
本発明は加熱室内の温度検出に係わる高周波加熱装置に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high frequency heating device related to temperature detection within a heating chamber.
従来、被加熱物の温度を検出する方法としてそれより発
する赤外線を検出する方法があり、一般的には被加熱物
から発せられた赤外線の検出口は加熱室の上面に設けら
れ、主に被加熱物の上面からの赤外線を検出し、その被
加熱物の温度を測定していた。Conventionally, there is a method for detecting the temperature of an object to be heated by detecting infrared rays emitted from the object.Generally, the detection port for the infrared rays emitted from the object to be heated is provided on the top surface of the heating chamber, and is mainly used for detecting infrared rays emitted from the object. The temperature of the heated object was measured by detecting infrared rays from the top surface of the heated object.
ところで、高周波加熱を行なうと多少の差はあれ、必然
的に加熱むらが生じるが、そのため被加熱物の赤外線を
検知する部分が、その被加熱物の平均温度より高いか、
低いかによつて加熱不足になつたり、過加熱になつたり
するということが容易に類推できるし、又確認もできた
。By the way, when high-frequency heating is performed, uneven heating inevitably occurs, although there are some differences, so whether the part of the object to be heated that detects infrared rays is higher than the average temperature of the object to be heated, or not.
It can be easily inferred and confirmed that depending on the temperature, heating may be insufficient or overheating.
前記の従来の方法では赤外線の検出視野角を食品等の被
加熱物の大きさによつて広げたり、狭くしたり、あるい
は加熱室内をスキャンさせることによつてさえも最大限
被加熱物の上面の平均温度が検出できるだけであり、正
確度に欠けるといつた欠点があつた。In the conventional method described above, the viewing angle for infrared rays is widened or narrowed depending on the size of the object to be heated such as food, or even by scanning the inside of the heating chamber, the upper surface of the object to be heated is maximized. The disadvantage was that it could only detect the average temperature of the area, and lacked accuracy.
そこで本発明はこの点に鑑み、被加熱物の平均温度をよ
り正確に検出する方法を提供する。In view of this point, the present invention provides a method for more accurately detecting the average temperature of a heated object.
以下、図面に基づき本発明の一実施例について・説明す
る。１は金属加熱室で沖に入れた被加熱物３をマグネト
ロン２から発振された高周波で加熱する。Hereinafter, one embodiment of the present invention will be described based on the drawings. 1 is a metal heating chamber in which an object to be heated 3 placed offshore is heated by high frequency waves oscillated from a magnetron 2.
４は回転皿であり、被加熱物３をこの上に載せて回転さ
せながら加熱する。4 is a rotating plate, on which the object to be heated 3 is placed and heated while rotating.
５は回転皿４の駆動用モータである。5 is a motor for driving the rotary plate 4.
６は加熱室１の側壁面１′ａに設けられた第１の赤外線
検出窓であり、被加熱物３から発せられた赤外線は第１
の窓６を通つて加熱室１外に設けられた第１の反射板７
に入射し、角度を変えられ・て第２の反射板８に入射す
る。6 is a first infrared detection window provided on the side wall surface 1'a of the heating chamber 1, and the infrared rays emitted from the object to be heated 3 are
A first reflecting plate 7 provided outside the heating chamber 1 through the window 6 of
The light is incident on the second reflecting plate 8 after changing its angle.
ここで赤外線は更に角度が変えられて、凹面鏡９に入射
し凹面鏡９の焦点付近に配設された赤外線センサー１０
に集束されて吸収される。赤外線センサー１０にはＰ、
Ｔ、Ｏ。などの焦電効果を利用したものが用いられる。
この赤外線センサー１０からの赤外線信号は制御回転１
１で処理、判定され最終的にマグネトロン２の発振コン
トロールされる。以上説明した構成では被加熱物３が例
えば肉などの固形のものの場合には特に有効で被加熱物
３が回転皿４によつて回転するためにその側部全周から
発せられた赤外線が次赤外線センサー１０に照射吸収さ
れることになる。Here, the angle of the infrared rays is further changed, and the infrared rays enter the concave mirror 9, and the infrared rays are arranged near the focal point of the concave mirror 9 to an infrared sensor 10.
is focused and absorbed. The infrared sensor 10 has P,
T.O. Those that utilize the pyroelectric effect are used.
The infrared signal from this infrared sensor 10 is the control rotation 1
1 is processed and determined, and finally the oscillation of the magnetron 2 is controlled. The configuration described above is particularly effective when the object to be heated 3 is a solid object such as meat, and as the object to be heated 3 is rotated by the rotating plate 4, the infrared rays emitted from the entire circumference of the side of the object are The light is irradiated and absorbed by the infrared sensor 10.
次にスープなどのように容器に入つた被加熱物３’の場
合には前述の構成では赤外線による温度測定が困難であ
るので、第２図のように加熱室１の上壁面ｌｂに設けら
れた第２の赤外線検出窓１２を介して被加熱物３’から
の赤外線を取り込む。Next, in the case of an object to be heated 3' such as soup in a container, it is difficult to measure the temperature using infrared rays with the above-mentioned configuration, so a device is installed on the upper wall surface lb of the heating chamber 1 as shown in FIG. The infrared rays from the heated object 3' are taken in through the second infrared detection window 12.
１３は第３の反射板であり、赤外線の角度を変えて凹面
鏡９に入射ならしめる。13 is a third reflecting plate, which changes the angle of the infrared rays to make them incident on the concave mirror 9.
この時、第２の反射板８は外部操作あるいは、制御回路
１１からのコントロールによつて、図面のように第２反
射板１３から凹面鏡９への赤外線の光路を妨げないよう
に角度が変えられる構造となつている。凹面鏡９に入射
した赤外線は同様に赤外線センサー１０で吸収検出され
る。以上の構成により、
１ 複数個の異つた角度から、赤外線検出ができるので
被加熱物の内容に合つた検出方法が可能となり、温度検
知精度が飛躍的に向上する。At this time, the angle of the second reflector 8 can be changed by external operation or control from the control circuit 11 so as not to obstruct the optical path of the infrared rays from the second reflector 13 to the concave mirror 9 as shown in the drawing. It has a structure. The infrared rays incident on the concave mirror 9 are similarly absorbed and detected by the infrared sensor 10. With the above configuration, 1. Since infrared detection can be performed from a plurality of different angles, a detection method suitable for the content of the object to be heated can be used, and temperature detection accuracy can be dramatically improved.
２ 複数個の異つた角度から入射された赤外線の検出を
反射板の切換え等の光学系の切換えによつて１つの赤外
線センサーで受光できるためコスト的、信頼性などの面
から有利である。2. Infrared rays incident from a plurality of different angles can be detected by one infrared sensor by switching the optical system such as changing the reflector, which is advantageous in terms of cost and reliability.
第１図は本発明の一実施例を示す高周波加熱装置の断面
図、第２図は同じ＜他の実施例を示す断面図である。
１ ・・・・・・金属加熱室、２ ・・・・・・マグネ
トロン、３ ・・・・・・被加熱物、４ ・・・・・・
回転皿、５ ・・・・・・駆動用モータ、６ ・・・・
・・第１の赤外線検出窓、７，８・・・・・・反射板、
９ ・・・・・・凹面鏡、１０・・・・・・赤外線セン
サー。FIG. 1 is a cross-sectional view of a high-frequency heating device showing one embodiment of the present invention, and FIG. 2 is a cross-sectional view showing the same <other embodiment. 1... Metal heating chamber, 2... Magnetron, 3... Heated object, 4...
Rotating plate, 5... Drive motor, 6...
...First infrared detection window, 7, 8...Reflector,
9... Concave mirror, 10... Infrared sensor.
Claims (1)
られた複数個の赤外線検出窓と、この赤外線検出窓から
入つてきた赤外線を適宜、選択して赤外線検知素子へ受
光させるための光学系切換え手段とを具備してなる高周
波加熱装置。1. A box-shaped metal heating chamber, a plurality of infrared detection windows provided on the wall of the metal heating chamber, and a system for appropriately selecting infrared rays entering from the infrared detection windows and allowing the infrared rays to be received by the infrared detection element. A high frequency heating device comprising an optical system switching means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2914079A JPS5950018B2 (en) | 1979-03-12 | 1979-03-12 | High frequency heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2914079A JPS5950018B2 (en) | 1979-03-12 | 1979-03-12 | High frequency heating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55121300A JPS55121300A (en) | 1980-09-18 |
| JPS5950018B2 true JPS5950018B2 (en) | 1984-12-06 |
Family
ID=12267966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2914079A Expired JPS5950018B2 (en) | 1979-03-12 | 1979-03-12 | High frequency heating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5950018B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3130788A1 (en) | 2021-12-22 | 2023-06-23 | Arkema France | Process for producing high purity boron trifluoride |
-
1979
- 1979-03-12 JP JP2914079A patent/JPS5950018B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3130788A1 (en) | 2021-12-22 | 2023-06-23 | Arkema France | Process for producing high purity boron trifluoride |
| WO2023118676A1 (en) | 2021-12-22 | 2023-06-29 | Arkema France | Method for producing high-purity boron trifluoride |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55121300A (en) | 1980-09-18 |
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