JP2592873B2 - Jar rice cooker - Google Patents
Jar rice cookerInfo
- Publication number
- JP2592873B2 JP2592873B2 JP62328849A JP32884987A JP2592873B2 JP 2592873 B2 JP2592873 B2 JP 2592873B2 JP 62328849 A JP62328849 A JP 62328849A JP 32884987 A JP32884987 A JP 32884987A JP 2592873 B2 JP2592873 B2 JP 2592873B2
- Authority
- JP
- Japan
- Prior art keywords
- steam hole
- valve
- rice cooker
- steam
- temperature
- 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
- 235000007164 Oryza sativa Nutrition 0.000 title claims description 23
- 235000009566 rice Nutrition 0.000 title claims description 23
- 240000007594 Oryza sativa Species 0.000 title claims 2
- 239000000956 alloy Substances 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 241000209094 Oryza Species 0.000 description 21
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
Landscapes
- Cookers (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 この発明はジャー炊飯器に関する。Description: TECHNICAL FIELD The present invention relates to a jar rice cooker.
従来の技術 従来この種のジャー炊飯器の蒸気孔は、第３図に示す
ように、鍋内の水が加熱されて発生する蒸気の圧力が蒸
気孔21に設けたおもり22を押し上げ、内部の蒸気を逃が
す構造となっている。2. Description of the Related Art Conventionally, as shown in FIG. 3, the steam hole of this type of jar rice cooker raises the weight 22 provided in the steam hole 21 by the pressure of the steam generated by heating the water in the pot, thereby increasing the internal pressure. It has a structure that allows steam to escape.
発明が解決しようとする問題点 しかし、このような構造のものでは、鍋内の水温が10
0℃以上になって蒸気が発生し、さらにこの蒸気圧が高
まっておもり22を押し上げる圧力になるまで蒸気孔21は
動作しないため、炊飯器内が加熱状態となり、ふきこぼ
れの原因となることがあった。また、これを避けるため
に予備孔を設けると、保温時にこの予備孔より熱や蒸気
がもれるため、熱効率が悪く、飯の表面が乾燥するなど
の問題点があった。Problems to be Solved by the Invention However, with such a structure, the water temperature in the pan
Steam is generated at 0 ° C. or higher, and the steam hole 21 does not operate until the steam pressure further increases to a pressure that pushes up the weight 22, so that the inside of the rice cooker becomes a heated state, which may cause a spill. Was. Further, if a preliminary hole is provided in order to avoid this, there is a problem that heat and steam leak from the preliminary hole at the time of heat retention, so that thermal efficiency is poor and the surface of rice is dried.
本発明は上記問題点を解決するもので、蒸気孔を所定
温度で確実に動作させることができるジャー炊飯器を提
供することを目的とするものである。The present invention has been made to solve the above problems, and has as its object to provide a jar rice cooker that can reliably operate a steam hole at a predetermined temperature.
問題点を解決するための手段 上記問題点を解決するために本発明は、本体上面開口
部を塞ぐ外蓋と、前記外蓋に設けられた蒸気孔と、前記
蒸気孔内に設けられた弁と、前記弁を下方に付勢して前
記蒸気孔を閉じようとするコイルばねと、所定の温度以
上の場合に前記弁を上方に付勢して前記蒸気孔を開らこ
うとするコイル状形状記憶合金とを備え、前記蒸気孔
は、上方に広がるテーパ部を設けるとともに窪みの無い
側面形状とし、かつ、前記弁は前記蒸気孔のテーパ部に
係合する形状とするとともにその外径を前記テーパ部の
最大外径より小さくしてなるものである。Means for Solving the Problems In order to solve the above problems, the present invention provides an outer lid for closing an upper opening of a main body, a steam hole provided in the outer lid, and a valve provided in the steam hole. A coil spring for urging the valve downward to close the vapor hole, and a coil spring for urging the valve upward to open the vapor hole when the temperature is equal to or higher than a predetermined temperature. Comprising a shape memory alloy, the steam hole is provided with a tapered portion extending upward and has a side surface shape without depression, and the valve is shaped to engage with the tapered portion of the steam hole and has an outer diameter of The tapered portion is made smaller than the maximum outer diameter.
作用 上記構成により、ジャー炊飯器内の温度がコイル状形
状記憶合金の動作温度より低い場合は、コイルばねによ
り弁テーパ状の蒸気孔壁に圧着されて蒸気孔を塞ぎ、ジ
ャー炊飯器内温度が高くなるとコイル状形状記憶合金は
その温度で記憶された所定の形状になり、コイルばねを
押しもどすとともに弁を動かして蒸気孔を開ける。ま
た、炊飯が終了して保温状態となると、鍋内の温度が低
下するためコイル状形状記憶合金の付勢力が弱まり、蒸
気孔は塞がれる。According to the above configuration, when the temperature in the jar rice cooker is lower than the operating temperature of the coiled shape memory alloy, the jar rice cooker is pressed against the valve tapered steam hole wall by a coil spring to close the steam hole, and the temperature in the jar rice cooker is reduced. As the temperature rises, the coiled shape memory alloy takes on a predetermined shape stored at that temperature, pushing the coil spring back and moving the valve to open a steam hole. Further, when the rice is kept warm after cooking, the temperature in the pot decreases, so that the urging force of the coil-shaped shape memory alloy is weakened, and the steam hole is closed.
実施例 以下、本発明の一実施例を添付図面に基づいて説明す
る。Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
第２図は本発明の一実施例を示すジャー炊飯器の一部
を断面で示した正面図である。第２図において、１は炊
飯器本体２に収納された鍋で、中央に感熱装置３が設け
られたヒータ４の上に載置されている。５と６はそれぞ
れ炊飯器本体２と外蓋７の内側に配設された保温用のヒ
ータである。８は複数個の孔をもつ内蓋で、外蓋７の中
央下方に突出して設けられた軸９に取り付けられてい
る。外蓋７は、炊飯器本体２の上端に設けられたヒンジ
軸10を介して回動自在に取り付けられ、内部から外部へ
連通して、上方に広がるテーパ状の蒸気孔11が設けられ
ている。この蒸気孔11にはそのテーパ部11aに係合する
弁12が内設されている。FIG. 2 is a front view showing a part of a jar rice cooker according to one embodiment of the present invention in cross section. In FIG. 2, reference numeral 1 denotes a pot stored in the rice cooker main body 2, which is placed on a heater 4 provided with a heat-sensitive device 3 in the center. Numerals 5 and 6 are heaters for keeping heat, which are arranged inside the rice cooker main body 2 and the outer lid 7, respectively. Reference numeral 8 denotes an inner lid having a plurality of holes, which is attached to a shaft 9 provided below the center of the outer lid 7 so as to project therefrom. The outer lid 7 is rotatably mounted via a hinge shaft 10 provided at the upper end of the rice cooker main body 2, and is provided with a tapered steam hole 11 extending upward from the inside to the outside to communicate with the outside. . The steam hole 11 is provided with a valve 12 which engages with the tapered portion 11a.
第１図は蒸気孔11の拡大断面図である。第１図におい
て、弁12の直径ｄは蒸気孔下部側の小口径D1より大き
く、蒸気孔上部側の大口径D2よりも小さく形成されてい
る。さらに、弁12の上面と蒸気孔11の上部内縁部11bと
の間にはコイルばね13が配設され、弁12の下面と蒸気孔
11の下部内縁部7aとの間には所定温度になるとのびるコ
イル状形状記憶合金14が配設され、これらのコイルばね
13とコイル状形状記憶合金14により弁12が挟持されて、
低温時または保温時ではコイルばね13の方が強く、弁12
はテーパ部11aに圧接して蒸気孔11を閉塞している。蒸
気孔11は上部連通孔15および下部連通孔16を介して外部
および炊飯器内部に連通している。FIG. 1 is an enlarged sectional view of the steam hole 11. In Figure 1, the diameter d of the valve 12 is greater than the small diameter D 1 of the steam hole lower portion, it is formed smaller than the large diameter D 2 of the steam hole upper side. Furthermore, a coil spring 13 is disposed between the upper surface of the valve 12 and the upper inner edge 11b of the steam hole 11, and the lower surface of the valve 12 and the steam hole
A coil-shaped shape memory alloy 14 extending when a predetermined temperature is reached is disposed between the lower inner edge portion 7a and the lower inner edge portion 7a.
The valve 12 is sandwiched between 13 and the coil-shaped shape memory alloy 14,
When the temperature is low or warm, the coil spring 13 is stronger and the valve 12
Presses against the tapered portion 11a to close the steam hole 11. The steam hole 11 communicates with the outside and the inside of the rice cooker via the upper communication hole 15 and the lower communication hole 16.
上記構成において、鍋１の中に水および米を入れ通電
を開始した時点では、弁12はコイルばね13の付勢力によ
り蒸気孔11のテーパ部11aに圧接され、これにより蒸気
孔11は塞がれている。ヒータ４により鍋１が加熱されて
水温が上昇し鍋内温度が上昇すると、コイル状形状記憶
合金14はその温度を感知し、所定の長さに戻ろうとす
る。この結果、コイル状形状記憶合金14はコイルばね13
の付勢力に抗して弁12を第１図における鎖線で示す位置
まで押し上げ、この弁12と蒸気孔11のテーパ部11aとの
間に隙間を形成し、この隙間から蒸気を逃がす。炊飯が
終了し、保温状態になって鍋内温度が低下すると、コイ
ル状形状記憶合金14の付勢力が弱まり、コイルばね13の
付勢力により弁12は再び蒸気孔11のテーパ部11aに圧着
され、上記隙間を閉じる。これにより、保温時にはジャ
ー炊飯器の内部が密閉される。In the above configuration, when water and rice are put into the pot 1 and energization is started, the valve 12 is pressed against the tapered portion 11a of the steam hole 11 by the urging force of the coil spring 13, whereby the steam hole 11 is closed. Have been. When the pot 1 is heated by the heater 4 and the water temperature rises and the temperature inside the pot rises, the coiled shape memory alloy 14 senses the temperature and tries to return to a predetermined length. As a result, the coil-shaped shape memory alloy 14
The valve 12 is pushed up to the position shown by the dashed line in FIG. 1 against the urging force to form a gap between the valve 12 and the tapered portion 11a of the steam hole 11, and steam is released from the gap. When the cooking is completed and the temperature in the pot is lowered due to the heat retention, the urging force of the coil-shaped shape memory alloy 14 is weakened, and the urging force of the coil spring 13 causes the valve 12 to be pressed again to the tapered portion 11a of the steam hole 11. , Close the gap. Thereby, the inside of the jar rice cooker is sealed when the temperature is kept warm.
発明の効果 以上のように本発明によれば、弁を下方に付勢して蒸
気孔を閉じようとするコイルばねと、所定の温度以上の
場合に弁を上方に付勢して蒸気孔を開らこうとするコイ
ル状形状記憶合金により、鍋内の温度に応じて蒸気孔を
開閉するので、鍋内が過熱状態になる以前に確実に蒸気
孔を開状態にでき、鍋内の蒸気を逃がしてふきこぼれを
防ぐことができる。低温時また保温時には、蒸気孔を閉
じているため、熱効率もよく、また飯表面の水分が逃げ
ることもなく、これにより保温時の乾燥状態を防止する
ことができる。Advantageous Effects of the Invention As described above, according to the present invention, a coil spring for biasing a valve downward to close a steam hole and a valve spring for biasing the valve upward when a predetermined temperature or more is reached, thereby forming a steam hole. Since the steam hole is opened and closed according to the temperature inside the pot by the coil-shaped shape memory alloy to be opened, the steam hole can be reliably opened before the inside of the pot becomes overheated, and the steam in the pot is removed. It can escape and prevent spills. When the temperature is low or the temperature is kept warm, the steam holes are closed, so that the heat efficiency is good, and the moisture on the surface of the rice does not escape, so that a dry state at the time of keeping the temperature can be prevented.
第１図は本発明の一実施例を示すジャー炊飯器の蒸気孔
部の拡大断面図、第２図は同ジャー炊飯器の一部を断面
で示した正面図、第３図は従来のジャー炊飯器の蒸気孔
部の拡大断面図である。 ２……炊飯器本体、７……外蓋、11……蒸気孔、11a…
…テーパ部、12……弁、13……コイルばね、14……コイ
ル状形状記憶合金。FIG. 1 is an enlarged cross-sectional view of a steam hole of a jar rice cooker showing one embodiment of the present invention, FIG. 2 is a front view showing a part of the jar rice cooker in cross section, and FIG. It is an expanded sectional view of the steam hole part of a rice cooker. 2 ... rice cooker body, 7 ... outer lid, 11 ... steam hole, 11a ...
... taper portion, 12 ... valve, 13 ... coil spring, 14 ... coiled shape memory alloy.
Claims (1)
設けられた蒸気孔と、前記蒸気孔内に設けられた弁と、
前記弁を下方に付勢して前記蒸気孔を閉じようとするコ
イルばねと、所定の温度以上の場合に前記弁を上方に付
勢して前記蒸気孔を開らこうとするコイル状形状記憶合
金とを備え、前記蒸気孔は、上方に広がるテーパ部を設
けるとともに窪みの無い側面形状とし、かつ、前記弁は
前記蒸気孔のテーパ部に係合する形状とするとともにそ
の外径を前記テーパ部の最大外径より小さくしてなるジ
ャー炊飯器。An outer lid for closing an opening on the upper surface of the main body, a steam hole provided in the outer lid, a valve provided in the steam hole,
A coil spring for urging the valve downward to close the steam hole, and a coil-shaped shape memory for urging the valve upward to open the steam hole when the temperature is higher than a predetermined temperature. Alloy, the steam hole is provided with a tapered portion extending upward and has a side surface shape without depression, and the valve is shaped to engage with the tapered portion of the steam hole, and the outer diameter is tapered. Jar rice cooker smaller than the maximum outer diameter of the part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62328849A JP2592873B2 (en) | 1987-12-24 | 1987-12-24 | Jar rice cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62328849A JP2592873B2 (en) | 1987-12-24 | 1987-12-24 | Jar rice cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01166719A JPH01166719A (en) | 1989-06-30 |
| JP2592873B2 true JP2592873B2 (en) | 1997-03-19 |
Family
ID=18214775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62328849A Expired - Lifetime JP2592873B2 (en) | 1987-12-24 | 1987-12-24 | Jar rice cooker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2592873B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107048987A (en) * | 2017-05-23 | 2017-08-18 | 宁波绿之品电器科技有限公司 | A kind of steam copper |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5832727U (en) * | 1981-08-25 | 1983-03-03 | 株式会社東芝 | Pressure cooker pressure regulating valve |
| JPH036253Y2 (en) * | 1984-11-27 | 1991-02-18 |
-
1987
- 1987-12-24 JP JP62328849A patent/JP2592873B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01166719A (en) | 1989-06-30 |
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