JP2019066177A5

JP2019066177A5 -

Info

Publication number: JP2019066177A5
Application number: JP2018242358A
Authority: JP
Filing date: 2018-12-26
Publication date: 2019-07-04
Anticipated expiration: 2035-03-16

Description

本発明は、上記の課題を解決するためになされたもので、被加熱物を入れて加熱するとともに、上方に観測窓を有する加熱室と、前記被加熱物を加熱する加熱手段と、前記観測窓を視野範囲として前記被加熱物の温度を検知する赤外線センサと、該赤外線センサを収めるとともに、該赤外線センサを臨ませる窓部と、この窓部以外に外形が円弧状となる円弧状部を有するユニットケースと、前記赤外線センサの検知温度に基づき前記加熱手段を制御する制御手段と、を備え、前記ユニットケースを回動させることにより、前記窓部を前記観測窓に臨ませる状態と、前記円弧状部を前記観測窓に臨ませる状態をとるものである。 The present invention has been made to solve the above-mentioned problems, and it comprises a heating chamber having an observation window at the top, a heating means for heating the object, and a heating chamber having an observation window at the same time. An infrared sensor for detecting the temperature of the object to be heated with a window as a visual field range, a window for containing the infrared sensor, and a window for facing the infrared sensor, and an arc-shaped part whose outer shape is an arc other than the window A control unit for controlling the heating unit based on a temperature detected by the infrared sensor, and rotating the unit case to make the window face the observation window; A state where an arc-shaped portion faces the observation window is taken .

５１はモータで、モータ５１の向きは、回転軸５１ａと加熱室奥壁面２８ｂと並行となるように取り付けられている。そして、回転軸５１ａが後述する筒状のユニットケース５４を回転（駆動）させることで、ユニットケース５４に収めた赤外線センサ５２を搭載した基板５３を回転させて赤外線センサ５２のレンズ部５２ａの向きを加熱室底面２８ａの奥側（加熱室奥壁面２８ｂ側）から加熱室開口部２８ｄの高さ方向に下方から３０％程度までの範囲を回転移動して温度を検出できるようにしている。モータ５１はステッピングモータを使用し制御基板２３に設けられた制御部の制御によって回転軸５１ａを正転、逆転、また回転角度を好みに動作可能となっている。 Reference numeral 51 denotes a motor, and the direction of the motor 51 is mounted parallel to the rotating shaft 51a and the heating chamber inner wall surface 28b. Then, the rotation shaft 51a rotates (drives) a cylindrical unit case 54 described later, thereby rotating the substrate 53 on which the infrared sensor 52 housed in the unit case 54 is mounted, and the direction of the lens portion 52a of the infrared sensor 52 The temperature can be detected by rotational movement in a range of about 30% from the lower side in the height direction of the heating chamber opening 28d from the back side (the heating chamber back wall surface 28b side) of the heating chamber bottom surface 28a. The motor 51 uses a stepping motor, and can be operated in forward rotation, reverse rotation, and a rotation angle according to control of a control unit provided on the control board 23.

５５は金属板から成るシャッタである。シャッタ５５は、赤外線センサ５２を使用しない時に後述する観測窓４４ａを閉じるものである（図７参照）。また加熱室２８の温度がユニットケース５４に伝わるのを防止するために、ユニットケース５４の外周に冷却風を流せるようにユニットケース５４の外周に沿って隙間を設けた風路５５ｃを形成するようにシャッタ５５を配置し、前記風路５５ｃに冷却風３９流す出入り口となる開口５５ａと開口５５ｂを設けている。 55 is a shutter made of a metal plate. The shutter 55 closes an observation window 44a described later when the infrared sensor 52 is not used (see FIG. 7). In order that the temperature of the heating chamber 28 is prevented from being transmitted to the unit case 54, to form air passages 55c provided with a gap along the outer periphery of the unit case 54 so as flown cooling air to the outer periphery of the unit case 54 The shutter 55 is disposed in the air passage 55c, and the air passage 55c is provided with an opening 55a and an opening 55b serving as an inlet and outlet through which the cooling air 39 flows.

４４は加熱室２８の内方向に突出した円弧状の観測部で、回転軸５１ａの回転中心と筒状のユニットケース５４の中心とユニットケース５４の外周に沿って設けられて円弧状に曲げられたシャッタ５５の円弧の中心と円弧状の観測部４４の各中心位置は全て同一位置となっている。４４ａは観測部４４に設けた観測窓で、赤外線センサ５２の検出する視野範囲となる範囲を開口している。また、マイクロ波加熱時に観測窓４４ａからのマイクロ波漏洩を防止するために、観測窓４４ａの周囲外側には立上壁（バーリング）４４ｂを２ｍｍ程度設けている。 44 is an arc-shaped observation portion projecting inward of the heating chamber 28, provided along the center of rotation of the rotation shaft 51a, the center of the cylindrical unit case 54, and the outer periphery of the unit case 54 and bent in an arc shape The center of the arc of the shutter 55 and the center position of the arc-shaped observation unit 44 are all the same. An observation window 44 a is provided in the observation unit 44 and opens a range serving as a visual field range detected by the infrared sensor 52. Further, in order to prevent microwave leakage from the observation window 44a at the time of microwave heating, a rising wall (burring) 44b of about 2 mm is provided on the outer periphery of the observation window 44a.

マグネトロン３３の発信が安定した後に、前記制御手段はモータ５１の回転軸５１ａを基準位置に回転するように制御する。回転軸５１ａが基準位置へと回転することでユニットケース５４も回転し、赤外線センサ５２のレンズ部５２ａの向きも基準位置の検知点ａを検知できる位置に回転（図４，図５参照）する。この時、冷却風３９は赤外線センサ５２のレンズ部５２ａを流れて観測窓４４ａから加熱室２８へと流れるので、レンズ部５２ａへの汚れ付着を防止している。 After the transmission of the magnetron 33 is stabilized, the control means controls the rotation shaft 51a of the motor 51 to rotate to the reference position. The rotation of the rotation shaft 51a to the reference position causes the unit case 54 to rotate, and the orientation of the lens portion 52a of the infrared sensor 52 also rotates to a position where the detection point a of the reference position can be detected (see FIGS. 4 and 5). . At this time, since the cooling air 39 flows through the lens portion 52a of the infrared sensor 52 and flows from the observation window 44a to the heating chamber 28, the adhesion of dirt to the lens portion 52a is prevented.

ユニットケース５４を回転することで、被加熱物６０ｃの温度の検出は前述した基準位置（検知点ａ）からテーブルプレート２４の検知点ｂ、検知点ｃへと進み、さらにユニットケース５４が回転するとコップ６０の外側の温度を高さ方向に検知し、検知点ｄから検知点ｅの温度を検知する。検知点がコップ６０の開口部の頂点に達した後は、被加熱物６０ｃの表面の温度を検知点ｆで検知し、次にコップ６０の内側の温度を検知点ｇで検知し、次にテーブルプレート２４の温度を検知点ｈで検知し、終点のドア２の温度を検知点ｉで検知する。 By rotating the unit case 54, detection of the temperature of the object to be heated 60c proceeds from the reference position (detection point a) described above to the detection point b and detection point c of the table plate 24, and further when the unit case 54 rotates. The temperature outside the cup 60 is detected in the height direction, and the temperature from the detection point d to the detection point e is detected. After the detection point reaches the top of the opening of the glass 60, the temperature of the surface of the object 60c is detected at the detection point f, and then the temperature inside the glass 60 is detected at the detection point g, and then The temperature of the table plate 24 is detected at the detection point h, and the temperature of the end door 2 is detected at the detection point i.

１加熱調理器
４４観測部
４８赤外線ケース
４９凸部
５０赤外線ユニット
５１モータ
５２赤外線センサ
５４ユニットケース
５５シャッタ DESCRIPTION OF SYMBOLS 1 heating cooker 44 observation part 48 infrared case 49 convex part 50 infrared unit 51 motor 52 infrared sensor 54 unit case 55 shutter

Claims

An object to be heated is placed and heated , and a heating chamber having an observation window above ,
Heating means for heating the object to be heated;
An infrared sensor for detecting the temperature of the heated object to the observation window as a viewing range,
A unit case having the infrared sensor housed therein, a window portion facing the infrared sensor, and an arc-shaped portion whose outer shape is an arc-like shape other than the window portion;
And control means for controlling the heating means based on the detected temperature of the infrared sensor,
A heating cooker characterized by a state in which the window portion faces the observation window and a state in which the arc-shaped portion faces the observation window by rotating the unit case .

The heating cooker according to claim 1, wherein the infrared sensor is disposed in the vicinity of an end of a top plate of the heating chamber.

The heating cooker according to claim 2, wherein a rotation axis of rotation of the unit case is configured to be parallel to a surface of the top plate.

The heating cooker according to claim 1, wherein a fan is disposed at a rear portion of the heating chamber, and a cooling air biased by the fan is supplied to the infrared sensor through a ventilation path.

The heating cooker according to claim 1, further comprising a stepping motor for rotating the unit case.

The heating cooker according to claim 1, wherein the infrared sensor detects the temperature of the object to be heated at a plurality of locations as the unit case rotates.