JPH0345851B2 - - Google Patents
Info
- Publication number
- JPH0345851B2 JPH0345851B2 JP59135828A JP13582884A JPH0345851B2 JP H0345851 B2 JPH0345851 B2 JP H0345851B2 JP 59135828 A JP59135828 A JP 59135828A JP 13582884 A JP13582884 A JP 13582884A JP H0345851 B2 JPH0345851 B2 JP H0345851B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- sensitive
- pot
- body case
- switch
- 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 - Lifetime
Links
- 238000010411 cooking Methods 0.000 claims description 23
- 241000209094 Oryza Species 0.000 description 14
- 235000007164 Oryza sativa Nutrition 0.000 description 14
- 235000009566 rice Nutrition 0.000 description 14
- 101100298225 Caenorhabditis elegans pot-2 gene Proteins 0.000 description 10
- 238000001514 detection method Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Cookers (AREA)
- Thermally Actuated Switches (AREA)
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
本発明は鍋が収納されていない状態を検出する
ことができる感熱装置に関する。DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a heat-sensitive device capable of detecting a state in which a pot is not stored.
(ロ) 従来の技術
従来の感熱装置は、例えば特公昭39−5575号公
報に示されるように、鍋の底面に弾接する感熱体
ケース内に感熱体を兼ねるバイメタル式の感熱ス
イツチと、鍋が収納されていない時にこの感熱ス
イツチを開成してヒータへの通電を遮断するシー
ソー部材とを配置し、前記感熱スイツチを鍋の一
定温度を検知してヒータの通断電を機械的に行う
スイツチ及び鍋の有無を検知してヒータの通断電
を機械的に行うスイツチに兼用しているため、前
記感熱スイツチはヒータに流れる大電流に耐え得
るように大型の接点とする必要があるとともに、
その接点には商用電圧が印加されるため周囲の部
材と絶縁のために大きく間隔を有して配置する必
要がある。その結果、感熱ケースは、その中に大
型の感熱スイツチ、それを開閉するシーソー部材
を配置することによりその形状が大型化するとと
もに、感電の恐れが生じる等の問題がある。(B) Conventional technology As shown in Japanese Patent Publication No. 39-5575, for example, a conventional heat-sensitive device includes a bimetallic heat-sensitive switch that also serves as a heat-sensitive body in a heat-sensitive body case that comes into elastic contact with the bottom of the pot, and a pot that A seesaw member that opens the heat-sensitive switch to cut off electricity to the heater when it is not stored, and a switch that mechanically turns on and off the heater by detecting a constant temperature of the pot; Since it also serves as a switch that mechanically turns on and off the heater by detecting the presence or absence of a pot, the heat-sensitive switch needs to have large contacts to withstand the large current flowing through the heater.
Since a commercial voltage is applied to the contact, it is necessary to arrange the contact with a large distance to insulate it from surrounding members. As a result, the heat-sensitive case has problems such as a large-sized heat-sensitive switch and a see-saw member for opening and closing the heat-sensitive switch disposed therein, which increases the size of the heat-sensitive case and raises the risk of electric shock.
また、感熱スイツチはバイメタル式で、特定の
温度しか検出することができないため、調理中の
複数の温度を検出してヒータの通電を制御しよう
とすると、感熱ケース内に複数個の感熱スイツチ
を配置しなければならないので形状が一層大型し
てしまうという問題がある。 In addition, heat-sensitive switches are bimetallic and can only detect a specific temperature, so if you want to detect multiple temperatures during cooking and control the energization of the heater, you will need to place multiple heat-sensitive switches inside the heat-sensitive case. As a result, there is a problem in that the shape becomes even larger.
一方、バイメタル式の感熱スイツチに代えて感
熱ケース内にサーミスタを配置したものが例えば
実公昭38−6359号公報に示されている。この装置
は感熱ケース外に配置した制御装置内にヒータの
通断電用の接点を開閉する電磁石を配置し、前記
サーミスタの抵抗値が鍋の温度上昇によつて増大
すると、電磁石の吸引力が弱まつて接点を開き、
ヒータへの通電を断つ構成となつており、この装
置においては感熱ケース内にサーミスタを配置し
ているので電子制御化には適しているものの、鍋
を収納しない状態で調理を開始すると、サーミス
タの温度が一定温度に加熱されるまでの間ヒータ
に通電され続けるので、火傷を負う危険がある。
すなわち、空炊きを防止することができない。同
様に実公昭53−48373号公報に示されている装置
においてもヒータに一旦通電しないと、空炊きを
検出できないので火傷の危険がある。 On the other hand, for example, Japanese Utility Model Publication No. 38-6359 discloses a switch in which a thermistor is placed inside a heat-sensitive case instead of a bimetallic heat-sensitive switch. This device has an electromagnet that opens and closes the heater's energizing/disconnecting contacts in a control device placed outside the heat-sensitive case, and when the resistance value of the thermistor increases due to a rise in the temperature of the pot, the attractive force of the electromagnet increases. weakens and opens the contacts,
The device is configured to cut off the power to the heater, and this device has a thermistor placed inside the heat-sensitive case, making it suitable for electronic control. However, if you start cooking without storing the pot, the thermistor will Since the heater continues to be energized until it reaches a certain temperature, there is a risk of burns.
In other words, empty cooking cannot be prevented. Similarly, in the device shown in Japanese Utility Model Publication No. 53-48373, if the heater is not energized once, dry cooking cannot be detected and there is a risk of burns.
(ハ) 発明が解決しようとする課題
本発明は上記の問題点を解決すべくなされたも
ので、鍋が収納されていない状態での空炊きをヒ
ータに通電することなく検出することができる感
熱装置を提供するとともに、その構成を小型、軽
量とし、また、組立て作業の容易な感熱装置を提
供するものである。(c) Problems to be Solved by the Invention The present invention has been made to solve the above-mentioned problems, and is a heat-sensitive method that can detect empty cooking when the pot is not stored without energizing the heater. The present invention provides a heat-sensitive device that is compact and lightweight, and that is easy to assemble.
(ニ) 課題を解決するための手段
本発明は、調理器本体内に挿脱自在に配設され
る鍋の底面に弾接せる感熱体ケースと、前記鍋の
温度を感知して抵抗値の変化する前記感熱体ケー
ス内に配置した感熱素子と、前記感熱体ケースの
上下動により開閉される前記感熱体ケース内に配
置した開閉スイツチと、前記感熱素子の信号を前
記感熱体ケース外に出力する信号線とを備え、前
記感熱素子と前記開閉スイツチを前記感熱体ケー
ス内で接続し、前記開閉スイツチの開閉による前
記鍋の状態を示す信号を前記信号線を介して出力
するように構成したものである。(d) Means for Solving the Problems The present invention includes a heat-sensitive case that is removably inserted into the cooking device and is brought into elastic contact with the bottom of a pot, and a heat-sensitive case that detects the temperature of the pot and adjusts the resistance value. A heat-sensitive element disposed inside the heat-sensitive body case that changes, an opening/closing switch disposed within the heat-sensitive body case that is opened and closed by vertical movement of the heat-sensitive body case, and a signal of the heat-sensitive element outputted to the outside of the heat-sensitive body case. the heat sensitive element and the open/close switch are connected within the heat sensitive element case, and a signal indicating the state of the pot due to opening/closing of the open/close switch is outputted via the signal line. It is something.
(ホ) 作用
本発明は上記のように構成しているので、開閉
スイツチの開閉により鍋の収納状態を検出でき、
空炊き検知のためヒータに一旦通電する必要がな
くなる。さらに、開閉スイツチは感熱素子に供給
する微弱電圧あるいは電流に耐え得る小型なもの
とすることが可能となり、開閉スイツチの形状及
びそれを収納する感熱体ケースの形状を小型、軽
量化できる。(E) Effect Since the present invention is configured as described above, the stored state of the pot can be detected by opening and closing the on/off switch.
There is no need to temporarily energize the heater to detect dry cooking. Furthermore, the on-off switch can be made small enough to withstand the weak voltage or current supplied to the heat-sensitive element, and the shape of the on-off switch and the heat-sensitive body case that houses it can be made smaller and lighter.
また、感熱素子と開閉スイツチを感熱体ケース
内で接続し、開閉スイツチの開閉による前記鍋の
状態を示す信号を感熱素子の信号を出力する信号
線を介して出力するように構成しているので、感
熱体ケースから取り出す信号線の数を削減し、組
立て作業性及び回路の信頼性を向上させる。 Further, the heat-sensitive element and the open/close switch are connected within the heat-sensitive element case, and a signal indicating the state of the pot due to opening/closing of the open/close switch is outputted via a signal line that outputs the signal of the heat-sensitive element. , the number of signal lines taken out from the heat sensitive body case is reduced, improving assembly workability and circuit reliability.
(ヘ) 実施例
以下図面により本発明の実施例を説明すると、
１はジヤー炊飯器等の電気調理器本体で、上面を
開口した有底筒状の外鍋２と、該外鍋と前記本体
１間の周側部に巻設せる断熱材３と、前記外鍋２
内に挿脱自在に吊下される如く配設される内鍋４
と、ヒンジ部５を介して前記本体１に回動自在に
取り付けられ且つ前記外鍋２上面を開閉自在に閉
塞せる蓋体６と、前記外鍋２の内底部に配設され
た環状のシーズヒータ等の炊飯用ヒータ７とから
構成している。前記外鍋２の内底面は略中央部分
を上方へ膨出して膨出部８を一体形成し且つその
中央に透孔９を穿設している。また、前記膨出部
８と間隔を存して取付板１０を前記外鍋２の内底
裏面に固定している。この取付板１０の略中央で
且つ前記透孔９と対向する位置に挿通孔１１を穿
設するとともに該挿通孔と少許の距離を存して貫
通孔１２を穿設している。１３は感熱体ケース
で、平板形状の受熱盤１４と円筒形状の外枠１５
と電気絶縁性の支持体１６とで外殻を構成してい
る。前記受熱盤１４の外周を下方へ折曲してフラ
ンジ部１４ａを形成している。(f) Examples Examples of the present invention will be explained below with reference to the drawings.
Reference numeral 1 designates a main body of an electric cooker such as a jar rice cooker, which includes a bottomed cylindrical outer pot 2 with an open top surface, a heat insulating material 3 wound around the circumferential side between the outer pot and the main body 1, and the outer pot 2. pot 2
An inner pot 4 arranged so as to be suspended in a manner that it can be freely inserted and removed.
a lid body 6 which is rotatably attached to the main body 1 via a hinge part 5 and which can open and close the top surface of the outer pot 2; and an annular sheath disposed at the inner bottom of the outer pot 2. It is composed of a rice cooking heater 7 such as a heater. The inner bottom surface of the outer pot 2 bulges upward at approximately the center thereof to integrally form a bulge 8, and a through hole 9 is bored in the center thereof. Further, a mounting plate 10 is fixed to the inner bottom back surface of the outer pot 2 with a gap from the bulged portion 8. An insertion hole 11 is formed approximately in the center of this mounting plate 10 and at a position facing the through hole 9, and a through hole 12 is formed at a small distance from the insertion hole. 13 is a heat sensitive body case, which includes a flat heat receiving plate 14 and a cylindrical outer frame 15.
and an electrically insulating support 16 constitute an outer shell. The outer periphery of the heat receiving plate 14 is bent downward to form a flange portion 14a.
１７は前記受熱盤１４を介して内鍋４の温度を
感知するサーミスタ等の感熱素子で、熱絶縁性の
耐熱チユーブ１８で保護されている。１９は平板
形のマイカ板等の絶縁板で、適所に前記耐熱チユ
ーブ１８の両端部を挿通せる穴２０，２０を穿設
し且つ前記受熱盤１４のフランジ部１４ａ内にこ
の絶縁板１９の外周縁と前記外枠１５の上部周縁
とともに嵌合してカシメ固定し、前記受熱盤１４
とで前記感熱素子１７を収納せる遮蔽室Ｓを形成
している。この遮蔽室Ｓの縦幅は前記耐熱チユー
ブ１８よりも少許狭く形成せられ、この耐熱チユ
ーブ１８内の感熱素子１７は前記受熱盤１４の裏
面に当接される格好となる。前記支持体１６の外
周囲は前記外枠１５の内壁に取り付けられ且つ略
中央に摺動孔２１を穿設し、上面にはこの摺動孔
２１と近接して一対の突起部２２，２２を突出形
成している。前記フランジ部１４ａの下面と前記
取付板１０の上面との間に外部スプリング２３を
介装して、前記感熱体ケース１３を常時上方に付
勢して前記膨出部８の透孔９から出没自在として
いる。尚、前記外枠１５の下端適所に、前記貫通
孔１２を貫通して抜け止め用の係止部２５ａを有
した垂下片２５を形成し、前記感熱体ケース１３
が前記外部スプリング２３により一定以上飛び出
さないように規制するものである。２６は前記感
熱素子１７に連結せるリード線２７に接続したＬ
字形状の接続端子板で、前記支持体１６の上面に
取り付けている。２８は前記接続端子板２６に電
気的に取り付けられる可動接点で、断面をＬ字形
状となし一端を前述したように接続端子板２６に
取り付け他端を前記突起部２２上面に載置して上
下湾曲可能としている。 Reference numeral 17 denotes a heat-sensitive element such as a thermistor that senses the temperature of the inner pot 4 via the heat-receiving plate 14, and is protected by a heat-insulating heat-resistant tube 18. Reference numeral 19 denotes a flat insulating plate such as a mica plate, which has holes 20, 20 at appropriate locations through which both ends of the heat-resistant tube 18 can be inserted, and the outside of the insulating plate 19 is inserted into the flange portion 14a of the heat receiving plate 14. The peripheral edge and the upper peripheral edge of the outer frame 15 are fitted together and fixed by caulking, and the heat receiving plate 14
A shielded chamber S is formed in which the heat-sensitive element 17 is housed. The vertical width of this shielding chamber S is formed to be slightly narrower than the heat-resistant tube 18, so that the heat-sensitive element 17 in the heat-resistant tube 18 is brought into contact with the back surface of the heat receiving plate 14. The outer periphery of the support body 16 is attached to the inner wall of the outer frame 15, and has a sliding hole 21 formed approximately in the center, and a pair of protrusions 22, 22 on the upper surface in close proximity to the sliding hole 21. It is formed protrudingly. An external spring 23 is interposed between the lower surface of the flange portion 14a and the upper surface of the mounting plate 10, and the heat sensitive body case 13 is always urged upward to protrude and retract from the through hole 9 of the bulged portion 8. I am free to do so. A hanging piece 25 is formed at a suitable position at the lower end of the outer frame 15, passing through the through hole 12 and having a locking part 25a for preventing the heat sensitive body case 13 from coming off.
is regulated by the external spring 23 so that it does not protrude beyond a certain level. 26 is an L connected to a lead wire 27 connected to the heat-sensitive element 17.
It is a letter-shaped connection terminal plate and is attached to the upper surface of the support body 16. Reference numeral 28 denotes a movable contact that is electrically attached to the connection terminal plate 26, and has an L-shaped cross section. One end is attached to the connection terminal plate 26 as described above, and the other end is placed on the upper surface of the projection 22 so that it can be moved up and down. It is bendable.
２９は下端一部を前記挿通孔１１に挿通した状
態で立設せる電気絶縁性の案内筒で、下部周側に
前記取付板１０上面に載置される鍔部２９ａを形
成し、内部に前記炊飯用ヒータ７と御述の保温用
ヒータとに間接的に電気接続せる固定接点３０を
通して、上面に露呈せしめている。また前記案内
筒２９は前記支持体１６の摺動孔２１内に挿通さ
れて、前記感熱体ケース１３を上下摺動可能とし
ている。３１は前記支持体１６の下面と前記鍔部
２９ａとの間に介装される内部スプリングで、前
記案内筒２９が傾いた時に元の位置へもどそうと
する力を有している。３２は前記外鍋２の上面外
周に巻装せる保温用ヒータ、３３は固定端子３
０，３０にリード線（信号線）を介して接続さ
れ、前記感熱素子１７の感知温度に応じて前記両
ヒータ７，３２への通電を制御せる電子制御回路
を有した電装ボツクスで、感熱体ケース１３の外
に配置している。 Reference numeral 29 denotes an electrically insulating guide tube that stands upright with a portion of its lower end inserted into the insertion hole 11, and has a flange portion 29a placed on the upper surface of the mounting plate 10 on the lower circumferential side, and has a flange portion 29a placed on the upper surface of the mounting plate 10 inside. It is exposed on the top surface through a fixed contact 30 that is indirectly electrically connected to the rice cooking heater 7 and the above-mentioned heat-retaining heater. Further, the guide tube 29 is inserted into the sliding hole 21 of the support body 16, so that the heat sensitive body case 13 can be slid up and down. Reference numeral 31 denotes an internal spring interposed between the lower surface of the support body 16 and the flange portion 29a, which has a force that tends to return the guide tube 29 to its original position when it is tilted. 32 is a heat-retaining heater that is wrapped around the upper surface of the outer pot 2; 33 is a fixed terminal 3;
0 and 30 via lead wires (signal lines), and has an electronic control circuit that controls the supply of electricity to both the heaters 7 and 32 according to the temperature sensed by the heat-sensitive element 17. It is placed outside the case 13.
また第４図に示す電気回路を説明すると、固定
接点３０及び可動接点２８とで形成する開閉スイ
ツチSWと感熱素子１７との直列回路を前記電子
制御回路を構成する温度検出回路３５を介して
SCR制御電子回路３６に接続し、該SCR制御電
子回路の出力側に炊飯用ヒータ７への通電を制御
せる第１サイリスタ４０と、保温用ヒータ３２へ
の通電を制御する第２サイリスタ４１とを接続し
ている。E1，E2は電源端子である。 Further, to explain the electric circuit shown in FIG. 4, a series circuit of the open/close switch SW formed by the fixed contact 30 and the movable contact 28 and the heat sensitive element 17 is connected via the temperature detection circuit 35 constituting the electronic control circuit.
A first thyristor 40 that is connected to the SCR control electronic circuit 36 and controls energization to the rice cooking heater 7 and a second thyristor 41 that controls energization to the heat retention heater 32 are connected to the output side of the SCR control electronic circuit. Connected. E 1 and E 2 are power supply terminals.
斯る構成による動作を説明すると、第３図に示
すように内鍋４が外鍋２内に収納されていないと
きには感熱体ケース１３は外部スプリング２３に
て一定距離飛び出すようになるために、この感熱
体ケース１３に一体的に配設した可動接点２８と
案内筒２９に配設した固定接点３０とは離間し、
感熱素子１７を電気的に不導通とする。その結
果、温度検出回路３５側から見た感熱素子１７の
抵抗値は無限大と見なされるから、温度検出回路
３５へ入力される信号は通常時に比べて大きく変
化することとなる。そして、図示しない構造でも
つて炊飯用ヒータ７へ通電しようとしても通電さ
れず、所謂内鍋４の非収納時における殻炊き防止
ができる。 To explain the operation of such a configuration, as shown in FIG. 3, when the inner pot 4 is not housed in the outer pot 2, the heat sensitive body case 13 is protruded a certain distance by the external spring 23. The movable contact 28 integrally disposed on the heat sensitive body case 13 and the fixed contact 30 disposed on the guide tube 29 are separated from each other,
The heat sensitive element 17 is made electrically non-conductive. As a result, the resistance value of the heat-sensitive element 17 viewed from the temperature detection circuit 35 side is considered to be infinite, so the signal input to the temperature detection circuit 35 changes significantly compared to normal times. Even if an attempt is made to energize the rice-cooking heater 7 with a structure not shown, the energization will not be applied, thereby preventing the so-called shell-cooking when the inner pot 4 is not stored.
このように、内鍋４の非収納状態を示す開閉ス
イツチSWからの信号を、感熱素子１７の信号線
を介して出力することにより、鍋非収納信号を温
度信号の一種として取扱うことができ回路の共用
化を実現できる。しかも感熱素子に供給する電圧
もしくは電流は一般に微弱なものでよいから、開
閉スイツチSWは小型のものを用いることができ
る。また、開閉スイツチSWは感熱素子１７とと
もに感熱体ケース１３内に収納され、その中で接
続されているために、これら両者はコンパクトに
一体化でき且つ密閉化することができ、しかも開
閉スイツチSWは感熱体ケース１３で保護され塵
埃等の浸入が防止されて接点不良を生じることが
なく、さらに、感熱体ケース１３から取り出す信
号線の数を削減して電装ボツクス３３との接続作
業を容易とすることができる。 In this way, by outputting the signal from the open/close switch SW indicating the non-storage state of the inner pot 4 through the signal line of the heat-sensitive element 17, the pot non-storage signal can be handled as a type of temperature signal. can be shared. Moreover, since the voltage or current supplied to the heat-sensitive element generally only needs to be weak, a small on-off switch SW can be used. Furthermore, since the on-off switch SW is housed in the heat-sensitive element case 13 together with the heat-sensitive element 17 and connected therein, the two can be compactly integrated and hermetically sealed. It is protected by the heat sensitive body case 13 and prevents the infiltration of dust, etc., thereby preventing contact failure, and furthermore, the number of signal lines taken out from the heat sensitive body case 13 is reduced to facilitate the connection work with the electrical equipment box 33. be able to.
また、第２図のように内鍋４を外鍋２内に収納
したときには、この内鍋４の底面で感熱体ケース
１３が前記外部スプリング２３に抗して下方へ押
圧され、この時感熱体ケース１３は案内筒２９を
中心軸にして下方へ摺動されるもので、可動接点
２８は固定接点３０に当接し、前記感熱素子１７
を導通状態に維持せしめ、前記炊飯用ヒータ７及
び保温用ヒータ３２に通電可能とならしめる。 Furthermore, when the inner pot 4 is housed in the outer pot 2 as shown in FIG. The case 13 is slid downward around the guide cylinder 29, and the movable contact 28 is in contact with the fixed contact 30, and the heat-sensitive element 17
is maintained in a conductive state, and electricity can be applied to the rice cooking heater 7 and the heat-retaining heater 32.
そして開閉スイツチSWが閉成した状態で電源
が供給されると、予め設定された炊飯完了温度に
達するまでは第１サイルスタ４０のゲートに
SCR制御電子回路３６から信号が送出されて炊
飯用ヒータ７が発熱し、内鍋４が加熱され炊飯が
行なわれる。 When power is supplied with the on/off switch SW closed, the gate of the first sile star 40 remains open until the preset rice cooking completion temperature is reached.
A signal is sent from the SCR control electronic circuit 36, the rice cooking heater 7 generates heat, the inner pot 4 is heated, and rice is cooked.
炊飯が進行して内鍋４が炊飯終了設定温度に達
すると、この温度を感熱素子１７が検知し、この
ことを温度検出回路３５を介してSCR制御電子
回路３６に信号を入力せしめ、この入力信号によ
り前記第１サイリスタ４０へのゲート信号を遮断
して炊飯用ヒータ７の発熱を停止して炊飯を終了
せしめる。 When the rice cooking progresses and the inner pot 4 reaches the set temperature for rice cooking, the heat sensitive element 17 detects this temperature and inputs a signal to the SCR control electronic circuit 36 via the temperature detection circuit 35. In response to the signal, the gate signal to the first thyristor 40 is cut off to stop the heat generation of the rice cooking heater 7 and finish the rice cooking.
一方、炊飯用ヒータ７の発熱停止による内鍋７
の温度低下を前記感熱素子１７が検出し、保温に
適した温度を検出すると、前記温度検出回路３５
及びSCR制御電子回路３６を介して第２サイリ
スタ４１にゲート信号を送出し、前記保温用ヒー
タ３２に通電を可能ならしめ保温動作を開始す
る。 On the other hand, the inner pot 7 due to the stoppage of heat generation of the rice cooking heater 7
When the heat-sensitive element 17 detects a temperature drop and detects a temperature suitable for keeping warm, the temperature detection circuit 35
Then, a gate signal is sent to the second thyristor 41 via the SCR control electronic circuit 36, enabling the heat-retaining heater 32 to be energized and starting the heat-retaining operation.
また感熱素子１７は受熱盤１４の内面に当接し
ているために内鍋４の温度をこの受熱盤１４を介
して確実に検知することができ、しかも前記感熱
素子１７の下方は絶縁板１９が横設されているた
めに炊飯用ヒータ７の下方からの熱影響を遮断し
て安定した感熱制御を行なうことができる。 Further, since the heat-sensitive element 17 is in contact with the inner surface of the heat-receiving plate 14, the temperature of the inner pot 4 can be reliably detected through the heat-receiving plate 14, and an insulating plate 19 is provided below the heat-sensitive element 17. Since it is installed horizontally, it is possible to block the influence of heat from below the rice-cooking heater 7 and perform stable heat-sensitive control.
(ト) 発明の効果
本発明は以上の如く構成したものであるから、
開閉スイツチの開閉により鍋の収納状態を確実に
検出し、鍋が収納されていない状態での空炊きを
防止できる。さらに、開閉スイツチは感熱素子に
供給する微弱な電圧もしくは電流に耐え得る程度
の小型のものを用いることができ、従来のように
ヒータに流れる大電流を直接通断電するものに比
べて、開閉スイツチ及びそれを収納する感熱体ケ
ースを小型、軽量化できる。(g) Effects of the invention Since the present invention is constructed as described above,
The stored state of the pot can be reliably detected by opening and closing the open/close switch, and empty cooking can be prevented when the pot is not stored. Furthermore, the on-off switch can be small enough to withstand the weak voltage or current supplied to the heat-sensitive element, and compared to the conventional switch that directly turns on and off the large current flowing to the heater, it is easier to open and close the switch. The switch and the heat sensitive body case housing it can be made smaller and lighter.
また、開閉スイツチは感熱素子とともに感熱体
ケース内に収納され、その中で接続されているた
めに、これら両者はコンパクトに一体化でき組立
作業性を向上することができるとともに、感熱体
ケースから取り出す信号線の数を削減して接続作
業性を向上することができる。さらに、開閉スイ
ツチは感熱体ケースで保護され塵埃等の侵入が防
止され、微弱電圧あるいは電流に対して接点不良
を生じることがなく回路の信頼性を向上できる。 In addition, since the open/close switch is housed in the heat-sensor case together with the heat-sensitive element and connected within it, the two can be integrated compactly, improving assembly workability, and can be removed from the heat-sensor case. Connection workability can be improved by reducing the number of signal lines. Furthermore, the open/close switch is protected by a heat-sensitive body case to prevent dust from entering, and the reliability of the circuit can be improved because contact failure does not occur due to weak voltages or currents.
第１図は本発明の感熱装置を具備するジヤー炊
飯器の要部破断側面図、第２図は第１図の要部拡
大断面図、第３図は鍋を取り外したときの同断面
図、第４図は本発明の感熱装置を使用した電気回
路図である。
１３……感熱体ケース、１７……感熱素子、４
……鍋、SW……開閉スイツチ。
FIG. 1 is a cutaway side view of the essential parts of a jar rice cooker equipped with the heat-sensitive device of the present invention, FIG. 2 is an enlarged sectional view of the essential parts of FIG. 1, and FIG. 3 is a sectional view of the same when the pot is removed. FIG. 4 is an electrical circuit diagram using the heat-sensitive device of the present invention. 13... Heat sensitive body case, 17... Heat sensitive element, 4
...Pot, SW...open/close switch.
Claims (1)
面に弾接せる感熱体ケースと、前記鍋の温度を感
知して抵抗値の変化する前記感熱体ケース内に配
置した感熱素子と、前記感熱体ケースの上下動に
より開閉される前記感熱体ケース内に配置した開
閉スイツチと、前記感熱素子の信号を前記感熱体
ケース外に出力する信号線とを備え、前記感熱素
子と前記開閉スイツチを前記感熱体ケース内で接
続し、前記開閉スイツチの開閉による前記鍋の状
態を示す信号を前記信号線を介して出力するよう
に構成したことを特徴とする感熱装置。1. A heat-sensitive body case that is in elastic contact with the bottom surface of a pot that is removably inserted into the cooking device main body, and a heat-sensitive element that is disposed within the heat-sensitive body case that changes its resistance by sensing the temperature of the pot. , an opening/closing switch disposed in the heat sensitive body case that is opened and closed by vertical movement of the heat sensitive body case, and a signal line that outputs a signal from the heat sensitive element to the outside of the heat sensitive body case, A heat-sensitive device, characterized in that a switch is connected within the heat-sensitive body case, and a signal indicating the state of the pot due to opening/closing of the opening/closing switch is outputted via the signal line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13582884A JPS6034418A (en) | 1984-06-29 | 1984-06-29 | Heat-sensitive apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13582884A JPS6034418A (en) | 1984-06-29 | 1984-06-29 | Heat-sensitive apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6034418A JPS6034418A (en) | 1985-02-22 |
| JPH0345851B2 true JPH0345851B2 (en) | 1991-07-12 |
Family
ID=15160735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13582884A Granted JPS6034418A (en) | 1984-06-29 | 1984-06-29 | Heat-sensitive apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6034418A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0515697Y2 (en) * | 1986-06-05 | 1993-04-26 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5348373U (en) * | 1976-09-29 | 1978-04-24 | ||
| JPS55154922A (en) * | 1979-05-24 | 1980-12-02 | Tokuyama Soda Co Ltd | Purification of chlorinated hydrocarbon |
| JPS5778734A (en) * | 1980-11-04 | 1982-05-17 | Sanyo Electric Co | Thermosensor |
-
1984
- 1984-06-29 JP JP13582884A patent/JPS6034418A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5348373U (en) * | 1976-09-29 | 1978-04-24 | ||
| JPS55154922A (en) * | 1979-05-24 | 1980-12-02 | Tokuyama Soda Co Ltd | Purification of chlorinated hydrocarbon |
| JPS5778734A (en) * | 1980-11-04 | 1982-05-17 | Sanyo Electric Co | Thermosensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6034418A (en) | 1985-02-22 |
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