JPS5841878Y2 - Jar rice cooker unevenness control device - Google Patents
Jar rice cooker unevenness control deviceInfo
- Publication number
- JPS5841878Y2 JPS5841878Y2 JP1683478U JP1683478U JPS5841878Y2 JP S5841878 Y2 JPS5841878 Y2 JP S5841878Y2 JP 1683478 U JP1683478 U JP 1683478U JP 1683478 U JP1683478 U JP 1683478U JP S5841878 Y2 JPS5841878 Y2 JP S5841878Y2
- Authority
- JP
- Japan
- Prior art keywords
- rice
- heater
- cooking
- time
- rice cooker
- 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
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- Cookers (AREA)
- Table Equipment (AREA)
- Control Of Resistance Heating (AREA)
Description
【考案の詳細な説明】
この考案は保温機能を有するジャ一式炊飯器において、
炊飯時と保温時の間の所謂ムラシ時にも、炊飯ヒータへ
の通電を行ない、より、美味な米飯を炊き上げようとす
るものである。[Detailed explanation of the invention] This invention is a rice cooker with a heat retention function.
Even during the so-called uneven time between cooking rice and keeping it warm, the rice cooking heater is energized to cook more delicious rice.
第1図に従来のジャー炊飯器の構成例を示す。FIG. 1 shows an example of the configuration of a conventional jar rice cooker.
1は交流電源でその両端子イ、二とする。1 is an AC power supply and its both terminals are A and 2.
5は保温ヒータで一端ハは保温サーモ4を介して電源端
子イに、他端口は炊飯ヒータ6を介して電源端子二に接
続される。5 is a heat-retaining heater; one end C is connected to a power terminal A via a heat-retaining thermometer 4, and the other end is connected to a power terminal 2 via a rice-cooking heater 6.
2は炊飯サーモで、上ブタの露付き防止用PTCヒータ
3と並列に、電源端子イ9ロ間に接続される。2 is a rice cooking thermometer, which is connected in parallel with the PTC heater 3 for preventing dew buildup on the upper lid, and between power terminals 9 and 9.
このサーモ2としては熱動式またはフェライトのキュリ
一点を巧みに用いた磁性式接点スイッチが、また保温サ
ーモ4にはサーマルリードスイッチまたはこれに制御さ
れるサイリスタが用いられる。The thermostat 2 is a thermal type or a magnetic contact switch that skillfully uses a single point of ferrite, and the thermostat 4 is a thermal reed switch or a thyristor controlled by the thermal reed switch.
第2図に動作説明図を示す。FIG. 2 shows an explanatory diagram of the operation.
第2図Aは飯温の時間的変化を示す。Figure 2A shows the temporal change in rice temperature.
Bは炊飯サーモ2、Cは保温サーモ4の各々の開閉状態
を示す。B indicates the open/closed states of the rice cooking thermostat 2, and C indicates the open/closed states of the heat-retaining thermostat 4.
時刻t。にて炊飯サーモ2の接点が機械的にセットされ
ると、米飯は炊飯ヒータ6により通常500〜700
W程度の電力で加熱される。Time t. When the contact point of the rice cooking thermometer 2 is mechanically set at
It is heated with a power of about W.
炊飯末期において、水気がなくなると飯温は100℃を
超えて急速に上昇し、通常120〜130℃をキャッチ
して炊飯サーモ2は動作し接点を開放する。At the end of rice cooking, when the water runs out, the rice temperature rapidly rises to over 100°C, and when it normally reaches 120 to 130°C, the rice cooking thermo 2 operates and opens the contacts.
時刻t2における飯温T1がこれに相当する。This corresponds to the rice temperature T1 at time t2.
時刻t2より供給される電力は露付き防止用PTCヒー
タ3と炊飯ヒータ6との直列回路による20〜30Wと
なり飯温は急速に低下し、時刻t7の約70℃(T3)
にて保温サーモがオンする。The power supplied from time t2 is 20 to 30 W due to the series circuit of the PTC heater 3 for preventing dew formation and the rice cooking heater 6, and the rice temperature rapidly decreases to about 70°C (T3) at time t7.
The heat retention thermo is turned on.
この時刻t2よりt7の間はムラシ期間である。The period from time t2 to t7 is a nonuniform period.
時刻t7にて保温サーモ4がオンすると供給される電力
は保温ヒータ5による増加があり、約50〜70W程度
となる。When the heat-retaining thermostat 4 is turned on at time t7, the supplied power is increased by the heat-retaining heater 5 and becomes about 50 to 70W.
時刻t8で飯温T2となると保温サーモ4はオフする。When the rice temperature reaches T2 at time t8, the heat-retaining thermostat 4 is turned off.
通常T2 T3は米飯温度リップルで2deg℃程度
である。Normally, T2 and T3 are about 2 degrees Celsius of cooked rice temperature ripple.
t7以降は保温期間で保温サーモ4の間けつ的な開閉に
より飯温は約70℃前後に確実に維持される。After t7, the rice temperature is reliably maintained at around 70° C. by intermittent opening and closing of the heat-retaining thermostat 4 during the warming period.
第1図、第2図に示す従来方式の欠点は時刻12〜47
間のムラシ期間の供給電力が、たかだか20〜30Wと
米飯内部の余分の水分を抜いて、米飯を美味に炊き上げ
るには不足であった。The disadvantage of the conventional method shown in Figures 1 and 2 is that the time 12 to 47
The power supplied during the in-between period was only 20 to 30 W, which was insufficient to remove excess moisture from the rice and cook the rice deliciously.
この考案はこのような点に鑑み、電気式炊飯器において
も、かまどで炊き上げた美味しい御飯が実現されるよう
、ムラシ期間の供給電力制御を積極的に採用し、これに
よりムラシ期間で米飯がら余分の水分を蒸気の形で外部
に抜き、ふっくらした、美味な御飯を炊き上げるように
したものである。In view of these points, this idea actively controls the power supply during the murasi period, so that even in electric rice cookers, delicious rice can be cooked in the oven. Excess moisture is removed outside in the form of steam, resulting in fluffy, delicious rice.
即ち、この考案の構成は、炊飯ヒータ、該炊飯ヒータと
直列接続された炊飯サーモ、並びに該炊飯サーモと並列
接続された保温サーモ及び保温ヒータの直列回路、を備
え、炊飯時には炊飯サーモで炊飯ヒータを、また保温時
には保温サーモで保温ヒータを制御するジャー炊飯器の
ムラシ制御装置において;前記炊飯サーモと並列接続さ
れた開閉器接点、及び、前記保温サーモ又は保温ヒータ
の両端電圧を監視して該両端電圧が、炊飯終了後の所定
電圧を発生した時点から積算動作を開始し、前記時点か
ら所定時間経過後より所定シーケンスで前記開閉器接点
を開閉制御するタイマー回路、を備えたことを特徴とす
るジャー炊飯器のムラシ制御装置、に在る。That is, the configuration of this invention includes a rice cooking heater, a rice cooking thermo connected in series with the rice cooking heater, and a series circuit of a warming thermostat and a warming heater connected in parallel with the rice cooking thermo. In addition, in a rice cooker rice cooker control device that controls a heat retention heater using a heat retention thermo during heat retention; a switch contact connected in parallel with the rice cooking thermo, and a voltage across both ends of the heat retention thermo or heat retention heater are monitored to determine the temperature. The rice cooker is characterized by comprising a timer circuit that starts an integration operation from the time when the voltage at both ends generates a predetermined voltage after the end of rice cooking, and controls opening and closing of the switch contact in a predetermined sequence after a predetermined time has elapsed from the said time. There is a rice cooker rice cooker's rice cooker control device.
以下図示実施例にしたがって、この考案の一実施例を説
明する。An embodiment of this invention will be described below according to the illustrated embodiment.
第3図はこの考案のジャー炊飯器ムラシ制御装置の回路
構成例を示す。FIG. 3 shows an example of the circuit configuration of the jar rice cooker unevenness control device of this invention.
図中1より6までの構成は第1図の従来例と同−故、説
明は省略する。The configurations 1 to 6 in the figure are the same as those of the conventional example shown in FIG. 1, and therefore their explanations will be omitted.
7は開閉器接点で端子イ9ロ間、即ち炊飯サーモ2に並
列接続される。7 is a switch contact, which is connected in parallel between terminals A and B, that is, to the rice cooking thermometer 2.
8はシーケンス用タイマ回路を示し、電源端子への端子
ホ、ヌ即ち開閉器接点7の駆動用コイル7aに接続され
る端子へ、ト、信号入力端子チ、りを有する。Reference numeral 8 designates a sequence timer circuit, which has terminals E, G, and signal input terminals connected to the power supply terminal, i.e., the drive coil 7a of the switch contact 7.
保温用ヒータ5の保温サーモ4側端子八と炊飯ヒータ6
側端子口とに上記端子八日を接続するようにしている。Terminal 8 on the heat retention thermo 4 side of the heat retention heater 5 and the rice cooking heater 6
The terminal 8 is connected to the side terminal opening.
次に、第4図の動作説明図によりその動作を詳述する。Next, the operation will be explained in detail with reference to the operation diagram shown in FIG.
第4図で時刻t。からt2までの炊飯期間、開閉器7は
動作せず、その接点はオフ故、米飯の温度変化A曲線は
第2図の従来例と同一である。In FIG. 4, time t. During the rice cooking period from to t2, the switch 7 does not operate and its contact is off, so the temperature change curve A of the cooked rice is the same as the conventional example shown in FIG.
炊飯末期において、水気がなくなると飯温は急速に立−
ヒリ、温度T1にて炊飯サーモ2はオフする。At the end of cooking, when the water runs out, the rice temperature rises rapidly.
When the temperature reaches T1, the rice cooking thermometer 2 turns off.
炊飯ヒータ6の両端、ロ、二間電圧は交流電源1の電圧
、通常100 Vより、10〜20Vに低下するが、こ
の電圧変化はシーケンス用タイマー回路8の積算開始指
令信号となる。The voltage between the two ends of the rice-cooking heater 6 decreases from the voltage of the AC power supply 1, which is usually 100 V, to 10 to 20 V, and this voltage change serves as an integration start command signal for the sequence timer circuit 8.
炊飯サーモ2の接点は温度による動作開放の外、手動に
よる機械的開放も一般に可能な構造である。The contacts of the rice-cooking thermometer 2 are generally structured so that they can be opened manually and mechanically in addition to being opened by temperature.
この結果、時刻t。附近で、最初に炊飯サーモ2を手動
でセット、即ちオンする時に、接点のチャタリング、或
いは、誤動作、例えば数度に亙リセット、リセット(動
作開放)を手動で行なった際炊飯ヒータ6の両端ロ二間
電圧が100Vより10〜20Vに低下することがあり
得る。As a result, time t. When the rice cooking thermometer 2 is manually set or turned on for the first time, contact chatter or malfunction may occur, for example, if the reset (operation release) is performed manually several times, both ends of the rice cooking heater 6 may be turned on. It is possible that the voltage between the two may drop from 100V to 10-20V.
これによりシーケンス用タイマー回路8が積算開始する
と、実質上、炊飯期間なしに、いきなリムラシ期間に入
る危険がある。As a result, when the sequence timer circuit 8 starts accumulating, there is a risk that the rice will suddenly enter a rice-cooking period without a rice-cooking period.
これを防止するため保温サーモ4の両端イ、ハ間電圧を
利用する。In order to prevent this, the voltage between both ends A and C of the heat-retaining thermostat 4 is used.
即ち正常時の時刻t2直後では保温サーモ4はオフ故、
イ、ハ間には80〜90Vが印加されるが、一方時刻t
o直後では保温サーモ4はオフ故、イ、ハ間電圧はO■
となる。That is, immediately after time t2 during normal operation, the heat retention thermostat 4 is off, so
80 to 90V is applied between A and C, while at time t
Immediately after o, the heat retention thermometer 4 is off, so the voltage between A and C is O■
becomes.
この電圧差により、時刻t2以降のみシーケンスタイマ
8は積算開始を行なわせることが可能である。This voltage difference allows the sequence timer 8 to start integration only after time t2.
時刻t2以降ムラシ期間に入るが、時刻t3迄の約5〜
7分間は開閉器7はオフ、次の時刻t3がらt4までの
約1〜2分はオン、時刻t4からt5迄の約3〜5分は
オフ、また時刻t5がらt6迄の約1〜2分はオン、そ
して時刻t6以降はオフとなるようにシーケンスタイマ
ー8は出力を端子へ、ト間に生しる。After time t2, it enters the uneven period, but until time t3, about 5~
The switch 7 is off for 7 minutes, on for about 1 to 2 minutes from time t3 to t4, off for about 3 to 5 minutes from time t4 to t5, and about 1 to 2 minutes from time t5 to t6. The sequence timer 8 outputs an output to a terminal between t and t so that it is on at the minute and off after time t6.
この開閉器7のオン・オフのシーケンスは炊飯器の構造
、炊飯ヒータの容量、炊飯する米の量、添加する水の量
により異なるが、最大公約数的な値として前記の値が実
験的に得られた。The on/off sequence of this switch 7 varies depending on the structure of the rice cooker, the capacity of the rice cooking heater, the amount of rice to be cooked, and the amount of water added, but the above value is experimentally determined as the greatest common divisor value. Obtained.
特に時刻t2からt3の間、開閉器7をオフにしておく
ことが重要である。It is especially important to keep the switch 7 off between times t2 and t3.
通常時刻t2がらt6迄、約15分程度必要とされる。Normally, about 15 minutes are required from time t2 to t6.
時刻t7で保温ヒータ4がオンするとムラシ期間が終り
、保温期間に入る。When the heat retention heater 4 is turned on at time t7, the heat retention period ends and the heat retention period begins.
時刻t7以降、保温サーモが動作し、米飯サーモが動作
し、米飯はT3とT2の間で制御される。After time t7, the heat retention thermostat operates, the cooked rice thermostat operates, and the cooked rice is controlled between T3 and T2.
第4図りに開閉器7の動作を示す。The fourth figure shows the operation of the switch 7.
第5図は、第3図の開閉器7にサイリスタを用い、これ
を位相制御する場合を示す。FIG. 5 shows a case where a thyristor is used for the switch 7 of FIG. 3 and its phase is controlled.
時刻t3からt6の間、炊飯時の電力の約1/10〜1
/20の電力を供給することが望ましい。From time t3 to t6, about 1/10 to 1 of the power used for cooking rice
It is desirable to supply a power of /20.
また第3図の保温サーモ4と保温ヒータ5の位置を入れ
換え、シーケンスタイマー8の入力信号電圧として、第
3図のイ、へ間の代りに、ハ5ロ間電圧を使用すること
もできる。Furthermore, the positions of the heat-retaining thermostat 4 and the heat-retaining heater 5 in FIG. 3 may be interchanged, and the voltage between C and R in FIG.
したがって、この考案によれば、炊飯後のムラシ期間に
、保温サーモ2と並列接続される開閉器7により炊飯ヒ
ータ6に通電することができ、米飯から余分の水分を蒸
気の形で抜き、ふっくらした美味な米飯を炊き上げる事
ができるとともに炊飯開始時から保温サーモ動作時まで
の期間中における誤ムラシ動作を防止できるという効果
を奏する。Therefore, according to this invention, during the steaming period after rice cooking, the rice cooking heater 6 can be energized by the switch 7 connected in parallel with the heat-retaining thermostat 2, and excess water is removed from the cooked rice in the form of steam, making it fluffy. This has the effect that not only can delicious cooked rice be cooked, but also erroneous steaming operation can be prevented during the period from the start of rice cooking to the operation of the heat-retaining thermostat.
第1図、第2図は従来の回路例およびその動作説明図、
第3図、第4図はこの考案の回路例およびその動作説明
図、第5図はこの考案の他の実施例の動作説明図である
。
図中、同一符号は同一または相当部分を示し、1は電源
、2は炊飯サーモ、3は霜付防止用PTCヒータ、4は
保温サーモ、5は保温サーモ、6は炊飯ヒータ、7は開
閉器、8はシーケンス用タイマーである。Figures 1 and 2 are conventional circuit examples and diagrams explaining their operation;
3 and 4 are diagrams illustrating an example of the circuit of this invention and its operation, and FIG. 5 is a diagram illustrating the operation of another embodiment of this invention. In the figure, the same reference numerals indicate the same or equivalent parts, 1 is the power supply, 2 is the rice cooking thermometer, 3 is the frost prevention PTC heater, 4 is the heat retention thermometer, 5 is the heat retention thermometer, 6 is the rice cooking heater, and 7 is the switch. , 8 is a sequence timer.
Claims (1)
、並びに該炊飯サーモと並列接続された保温サーモ及び
保温ヒータの直列回路、を備え、炊飯時には炊飯サーモ
で炊飯ヒータを、また保温時には保温サーモで保温ヒー
タを制御するジャー炊飯器のムラシ制御装置において;
前記炊飯サーモと並列接続された開閉器接点、及び、前
記保温サーモ又は保温ヒータの両端電圧を監視して該両
端電圧が、炊飯終了後の所定電圧を発生した時点から積
算動作を開始し、前記時点から所定時間経過後より所定
シーケンスで前記開閉器接点を開閉制御するタイマー回
路、を備えたことを特徴とするジャー炊飯器のムラシ制
御装置。It is equipped with a rice cooking heater, a rice cooking thermo connected in series with the rice cooking heater, and a series circuit of a heat retention thermo and a heat retention heater connected in parallel with the rice cooking thermo. In a rice cooker rice cooker control device that controls a heat retention heater;
Monitoring the voltage across the switch contact connected in parallel with the rice-cooking thermometer and the heat-retaining thermo or heat-retaining heater, and starting the integration operation from the time when the voltage across the ends generates a predetermined voltage after the end of rice cooking; 1. A rice cooker rice cooker rice cooker comprising: a timer circuit that controls opening and closing of the switch contacts in a predetermined sequence after a predetermined period of time has elapsed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1683478U JPS5841878Y2 (en) | 1978-02-13 | 1978-02-13 | Jar rice cooker unevenness control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1683478U JPS5841878Y2 (en) | 1978-02-13 | 1978-02-13 | Jar rice cooker unevenness control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54121861U JPS54121861U (en) | 1979-08-25 |
JPS5841878Y2 true JPS5841878Y2 (en) | 1983-09-21 |
Family
ID=28841084
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1683478U Expired JPS5841878Y2 (en) | 1978-02-13 | 1978-02-13 | Jar rice cooker unevenness control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5841878Y2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5668412A (en) * | 1979-11-07 | 1981-06-09 | Matsushita Electric Ind Co Ltd | Rice cooker |
JPS58106037U (en) * | 1982-01-18 | 1983-07-19 | 株式会社日立ホームテック | electric rice cooker |
-
1978
- 1978-02-13 JP JP1683478U patent/JPS5841878Y2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS54121861U (en) | 1979-08-25 |
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