JPH0622491B2 - rice cooker - Google Patents
rice cookerInfo
- Publication number
- JPH0622491B2 JPH0622491B2 JP11612785A JP11612785A JPH0622491B2 JP H0622491 B2 JPH0622491 B2 JP H0622491B2 JP 11612785 A JP11612785 A JP 11612785A JP 11612785 A JP11612785 A JP 11612785A JP H0622491 B2 JPH0622491 B2 JP H0622491B2
- Authority
- JP
- Japan
- Prior art keywords
- rice
- heat
- cooking
- heater
- 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 - Lifetime
Links
- 235000007164 Oryza sativa Nutrition 0.000 title claims description 69
- 235000009566 rice Nutrition 0.000 title claims description 69
- 240000007594 Oryza sativa Species 0.000 title 1
- 241000209094 Oryza Species 0.000 claims description 68
- 238000010411 cooking Methods 0.000 claims description 54
- 238000010438 heat treatment Methods 0.000 claims description 25
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 239000011810 insulating material Substances 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 5
- 230000005855 radiation Effects 0.000 description 5
- 210000000078 claw Anatomy 0.000 description 3
- 101100298225 Caenorhabditis elegans pot-2 gene Proteins 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004512 die casting Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting 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 本発明は、一般家庭で使用される炊飯器に関するもので
ある。TECHNICAL FIELD The present invention relates to a rice cooker used in general households.
従来の技術 従来この種の炊飯器は、例えば特公昭５９−２６２９５
号公報に示されているように、第４図に示すような構成
となっていた。すなわち、第４図において、１は炊飯器
本体、２は炊飯器本体１内に収納され、かつ内部に炊飯
用鍋３が挿入される保護枠、４は前記保護枠２の底部に
載置される炊飯用熱板で、この炊飯用熱板４はアルミダ
イキャスト製であってシーズヒータ５が鋳込まれ、かつ
前記炊飯用鍋３の底部に沿うように表面が加工されてい
る。６は内蓋、７は外蓋で、この外蓋７には保温用のヒ
ータ８が配設された放熱板９が取付けられている。１０
は保護枠２の側面に配設された保温用コードヒータ、１
１は断熱材、１２は炊飯終了を検知するサーモスタッ
ト、１３は前記サーモスタット１２に連結した炊飯レバ
ーで、炊飯スイッチ１４を動作させる。2. Description of the Related Art Conventionally, this type of rice cooker is disclosed in, for example, Japanese Patent Publication No. 59-26295.
As shown in the publication, the structure is as shown in FIG. That is, in FIG. 4, 1 is a rice cooker main body, 2 is a protective frame in which the rice cooker main body 1 is housed, and the rice cooking pot 3 is inserted therein, 4 is placed on the bottom of the protective frame 2. The rice cooking hot plate 4 is made of aluminum die-cast, the sheathed heater 5 is cast, and the surface is processed along the bottom of the rice cooking pot 3. Reference numeral 6 is an inner lid, and 7 is an outer lid, and a heat radiating plate 9 provided with a heater 8 for keeping heat is attached to the outer lid 7. 10
Is a cord heater for heat insulation arranged on the side surface of the protective frame 2,
1 is a heat insulating material, 12 is a thermostat for detecting the end of cooking rice, 13 is a rice cooking lever connected to the thermostat 12, and a rice cooking switch 14 is operated.
発明が解決しようとする問題点 しかしながら、このような上の構成では、炊飯用鍋３の
底面と炊飯用熱板４の接触状態によって炊飯用熱板４か
ら炊飯用鍋３の底面への熱伝達が変化し、これによって
炊きむらが生じるという問題があった。また、炊飯用鍋
３の底部を均一に加熱するために炊飯用熱板４と炊飯用
鍋３の底面との間に隙間を設けた場合は、熱効率が悪く
なるとともに、炊飯用熱板４の温度が上昇して炊飯用熱
板４の変形や溶解をもたらすという問題をも有してい
た。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-described configuration, heat transfer from the rice cooking pan 4 to the bottom surface of the rice cooking pan 3 depends on the contact state between the bottom surface of the rice cooking pan 3 and the heating plate 4 for rice cooking. However, there was a problem that the uneven cooking occurred. Moreover, when a gap is provided between the hot plate 4 for cooking rice and the bottom surface of the pot 3 for cooking rice in order to uniformly heat the bottom part of the pot 3 for cooking rice, the heat efficiency becomes poor and the hot plate 4 for cooking rice becomes poor. There is also a problem that the temperature rises and the hot plate 4 for cooking rice is deformed or melted.
本発明はこのような問題点を解決するもので、効率良く
炊飯用鍋の底面を均一に加熱し、炊きむらのない良好な
炊飯を行うことができる炊飯器を提供することを目的と
するものである。The present invention solves such a problem, and an object of the present invention is to provide a rice cooker capable of efficiently heating the bottom surface of a rice cooking pot uniformly and performing excellent rice cooking without unevenness in cooking. Is.
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、略筒状のヒータ
ケースに、セラミック板にヒータコイルを配設してなる
ヒータベースを収納し、その後、熱伝達特性の良い絶縁
材を充填し、ヒータケースの開口部を金属製カバーで覆
って加熱面とし、さらにこの加熱面となる金属製カバー
の表面に、空気が吸収しにくい波長の熱線を放射する熱
放射物質、ＮｉＯ等の物質をコーティングすることによ
り炊飯用熱板を構成し、かつこの炊飯用加熱板の加熱面
と炊飯用鍋の底面との間に隙間を設けたものである。Means for Solving the Problems In order to solve the above problems, according to the present invention, a heater base formed by arranging a heater coil on a ceramic plate is housed in a substantially cylindrical heater case, and then a heat transfer characteristic is provided. Thermal radiation that fills the heater case with a good insulating material and covers the opening of the heater case with a metal cover as a heating surface, and radiates heat rays of a wavelength that air is difficult to absorb on the surface of the metal cover A hot plate for cooking rice is constructed by coating a substance, such as NiO, and a gap is provided between the heating surface of the heating plate for cooking rice and the bottom surface of the rice cooking pot.
作用 この構成によれば、炊飯用鍋の底面と炊飯用熱板の加熱
面との間に隙間があり、熱の伝達はこの隙身による空気
層を介して行われるため、炊飯用鍋の底面は均一に加熱
される。また、炊飯用熱板の加熱面には熱放射物質がコ
ーティングされているため、空気が吸収しにくい波長の
熱線は放射されることになり、これにより、空気を加熱
せずに直接熱が鍋に伝えられるため、熱効率もきわめて
良い。また炊飯用熱板の加熱面の熱放射が良いため、加
熱面の温度上昇も少なく、したがって、この炊飯用熱板
をアルミダイキャストで成形してもその変形や溶解の心
配はないものである。Action According to this configuration, there is a gap between the bottom surface of the rice cooking pot and the heating surface of the rice cooking hot plate, and heat is transferred through the air layer due to this gap, so the bottom surface of the rice cooking pot. Is heated uniformly. In addition, since the heating surface of the hot plate for cooking rice is coated with a heat-radiating substance, heat rays with a wavelength that is difficult for air to absorb will be radiated, which allows the heat to be directly heated without heating the air. Therefore, the thermal efficiency is extremely good. Moreover, since the heating surface of the heating plate for cooking rice has good heat radiation, the temperature rise of the heating surface is small, and therefore, even if this heating plate for cooking rice is molded by aluminum die casting, there is no fear of deformation or melting. .
実施例 以下、本発明の一実施例を第１図〜第３図にもとづいて
説明する。図において、１９は円筒状の炊飯器本体、２
０は炊飯本体１９内に収納され、かつ内部に炊飯用鍋２
１が挿入される保護枠、２２は炊飯用熱板である。２３
はセラミック板２４にヒータコイル２５を配設してなる
ヒータベース２６を収納する略筒状のヒータケースで、
中央に貫通孔２３ａが設けられている。２７はヒータベ
ース２６上に充填される熱伝達特性の良い絶縁材、２８
は前記ヒータケース２３の開口部を覆い、加熱面となる
金属製カバーで、中央に貫通孔２８ａが設けられてお
り、かつ表面に熱放射のすぐれたNiO等の空気が吸収し
にくい波長の熱線を放射する熱放射物質をコーティング
している。これらの部品により炊飯用熱板２２は構成さ
れている。２９は炊飯終了を検知するサーモスタット
で、このサーモスタット２９はコイルバネ３０によって
炊飯用鍋２１の底面に常時当接するようにに付勢されて
いる。３１はサーモスタット２９ならびにコイルバネ３
０を保持するサーモスタットケースで、開口部にはフラ
ンジ部３１ａが、底部には固定爪３１ｂが設けられてい
る。３２は締付け金具で、この締付け金具３２の上端フ
ランジ部３２ａには締付けネジ取付け部３２ｂが一体に
設けられ、かつ底部には前記固定爪３１ｂが挿入される
貫通孔３２ｃが設けられている。前記サーモスタット２
９ならびにコイルバネ３０はサーモスタットケース３１
に挿入固定され、そしてこのサーモスタットケース３１
はヒータケース２３の貫通孔２３ａおよび金属製カバー
２８の貫通孔２８ａに挿入され、フランジ部３１ａが金
属製カバー２８の貫通孔２８ａの周囲に当接する。ま
た、締付け金具３２がサーモスタットケース３１の下部
より取付けられ、そして前記サーモスタットケース３１
の固定爪３１ｂはこの締付け金具３２の貫通孔３２ｃに
挿入した後、折り曲げることによって固定される。締付
けネジ３３が締付けネジ取付け部３２ｂに取付けられる
と、ヒータケース２３ならびに金属製カバー２８は、サ
ーモスタットケース３１のフランジ部３１ａと締付けネ
ジ３３の先端との間に挾まれて固定される。３４は内
蓋、３５は外蓋で、この外蓋３５には保温用のヒータ３
６を配設した放熱板３７が取付けられている。３８は保
護枠２０の上部側壁に配設された保温用コードヒータ、
３９は断熱材、４０は前記サーモスタット２９に連結さ
れている炊飯レバーで、炊飯スイッチ４１を動作させ
る。また、炊飯用鍋２１の底面と金属製カバー２８との
間には隙間４２が設けられている。Embodiment An embodiment of the present invention will be described below with reference to FIGS. In the figure, 19 is a cylindrical rice cooker body, 2
0 is stored in the rice cooking main body 19 and the rice cooking pot 2 is inside.
A protective frame 1 is inserted, and a hot plate 22 for cooking rice. 23
Is a substantially cylindrical heater case that houses a heater base 26 in which a heater coil 25 is arranged on a ceramic plate 24.
A through hole 23a is provided in the center. 27 is an insulating material with good heat transfer characteristics filled on the heater base 26, 28
Is a metal cover that covers the opening of the heater case 23 and serves as a heating surface, has a through hole 28a in the center, and has a surface with excellent heat radiation, such as NiO, which has a wavelength that makes it difficult for air to absorb heat rays. Is coated with a heat emitting material that emits heat. The hot plate 22 for cooking rice is constituted by these components. Reference numeral 29 denotes a thermostat that detects the end of cooking rice. The thermostat 29 is urged by a coil spring 30 so as to always contact the bottom surface of the cooking pot 21. 31 is a thermostat 29 and a coil spring 3
This is a thermostat case that holds 0, and has a flange portion 31a at the opening and a fixed claw 31b at the bottom. Reference numeral 32 denotes a tightening fitting, and an upper end flange portion 32a of the tightening fitting 32 is integrally provided with a tightening screw mounting portion 32b, and a bottom portion thereof is provided with a through hole 32c into which the fixing claw 31b is inserted. The thermostat 2
9 and coil spring 30 are thermostat cases 31
Inserted and fixed in, and this thermostat case 31
Is inserted into the through hole 23a of the heater case 23 and the through hole 28a of the metal cover 28, and the flange portion 31a abuts around the through hole 28a of the metal cover 28. Further, the tightening fitting 32 is attached from the lower part of the thermostat case 31, and the thermostat case 31 is attached.
The fixed claw 31b is inserted into the through hole 32c of the tightening fitting 32 and then bent to be fixed. When the tightening screw 33 is attached to the tightening screw attachment portion 32b, the heater case 23 and the metal cover 28 are sandwiched and fixed between the flange portion 31a of the thermostat case 31 and the tip of the tightening screw 33. 34 is an inner lid and 35 is an outer lid. The outer lid 35 has a heater 3 for keeping heat.
A heat radiating plate 37 in which 6 is arranged is attached. Reference numeral 38 denotes a cord heater for heat insulation arranged on the upper side wall of the protective frame 20,
Reference numeral 39 is a heat insulating material, and 40 is a rice cooking lever connected to the thermostat 29, and operates a rice cooking switch 41. A gap 42 is provided between the bottom surface of the rice cooking pot 21 and the metal cover 28.
上記構成において動作を説明する。炊飯レバー４０を操
作してサーモスタット２９ならびに炊飯スイッチ４１を
セットし、炊飯を開始するとヒータコイル２５は通電さ
れて発熱する。そしてこのヒータコイル２５の熱は絶縁
材２７を介して金属製カバー２８に伝達されて昇温し、
炊飯用鍋２１の底面を加熱しようとするが、炊飯用鍋２
１の底面と金属製カバー２８は接触していないため、局
部的な熱伝導はなく、したがって炊飯用鍋２１の底面は
均一に加熱されることになり、炊きむらのない良好な炊
飯を行うことができる。また、金属製カバー２８の表面
にコーティングされた熱放射物質によって、空気が吸収
しにくい波長の熱線が放射されるので、空気を加熱せず
に直接熱が炊飯用鍋２１に伝えられることになり、その
結果、熱効率はすぐれたものとなる。さらに金属製カバ
ー２８は熱放射が良いため、温度上昇は少なく、したが
って金属製カバー２８の劣下も少なくなる。The operation of the above configuration will be described. When the rice cook lever 40 is operated to set the thermostat 29 and the rice cook switch 41 and the rice cook is started, the heater coil 25 is energized to generate heat. Then, the heat of the heater coil 25 is transferred to the metal cover 28 via the insulating material 27 to raise the temperature,
Trying to heat the bottom of the rice cooking pot 21, but the rice cooking pot 2
Since the bottom surface of No. 1 and the metal cover 28 are not in contact with each other, there is no local heat conduction, so that the bottom surface of the rice cooking pot 21 is uniformly heated, and good rice cooking without uneven cooking is performed. You can Further, the heat radiation substance coated on the surface of the metal cover 28 radiates heat rays having a wavelength that is difficult for air to absorb, so that heat is directly transmitted to the rice cooking pot 21 without heating the air. As a result, the thermal efficiency is excellent. Further, since the metal cover 28 has good heat radiation, the temperature rise is small, and therefore the deterioration of the metal cover 28 is also small.
発明の効果 以上のように本発明によれば、略筒状のヒータケース
に、セラミック板にヒータコイルを配設してなるヒータ
ベースを収納し、その後、熱伝達特性の良い絶縁材を充
填し、ヒータケースの開口部を金属製カバーで覆って加
熱面とし、さらにこの加熱面となる金属製カバーの表面
に、空気が吸収しにくい波長の熱線を放射する熱放射物
質をコーティングすることにより炊飯用熱板を構成し、
かつこの炊飯用熱板の加熱面と炊飯用鍋の底面との間に
隙間を設けた構成としているため、炊飯用鍋の低面への
熱伝導は均一となり、その結果、炊きむらのない良好な
炊飯ができ、また炊飯用熱板の加熱面には熱放射物質が
コーティングされているため、この熱放射物質によって
空気を加熱することなく炊飯用鍋を加熱することがで
き、したがってその熱効率は極めて良く、かつ加熱面の
温度上昇も少なくなるため、金属製カバーの劣下も少な
くなるという効果も得られるものである。EFFECTS OF THE INVENTION As described above, according to the present invention, the heater base formed by arranging the heater coil on the ceramic plate is housed in the substantially cylindrical heater case, and then the insulating material having good heat transfer characteristics is filled. The rice is cooked by covering the opening of the heater case with a metal cover to form a heating surface, and then coating the surface of the metal cover, which is the heating surface, with a heat emitting substance that emits heat rays of a wavelength that is difficult for air to absorb. The hot plate for
Moreover, since a gap is provided between the heating surface of this rice cooking hot plate and the bottom surface of the rice cooking pot, the heat conduction to the lower surface of the rice cooking pot becomes uniform, and as a result, there is no uneven cooking. It can cook various rice, and since the heating surface of the heating plate for cooking rice is coated with heat-radiating substance, the heat-radiating substance can heat the rice-cooking pot without heating the air, and therefore its thermal efficiency is Since the temperature rise of the heating surface is extremely small and the deterioration of the metal cover is also small, the effect can be obtained.
第１図は本発明の一実施例を示す炊飯器の断面図、第２
図は同炊飯器の要部断面図、第３図は同要部の分解斜視
図、第４図は従来の炊飯器を示す断面図である。 １９……炊飯器本体、２０……保護枠、２１……炊飯用
鍋、２２……炊飯用熱板、２３……ヒータケース、２４
……セラミック板、２５……ヒータコイル、２６……ヒ
ータベース、２７……絶縁材、２８……金属製カバー。1 is a sectional view of a rice cooker showing an embodiment of the present invention, FIG.
FIG. 4 is a sectional view of a main part of the rice cooker, FIG. 3 is an exploded perspective view of the main part, and FIG. 4 is a sectional view showing a conventional rice cooker. 19: rice cooker main body, 20: protective frame, 21: rice cooking pot, 22: rice cooking hot plate, 23: heater case, 24
...... Ceramic plate, 25 ...... Heater coil, 26 ...... Heater base, 27 ...... Insulating material, 28 ...... Metal cover.
Claims (1)
れ、かつ内部に炊飯用鍋が挿入される保護枠と、この保
護枠の底部に載置される炊飯用熱板とを有し、前記炊飯
用熱板は、略筒状のヒータケースに、セラミック板にヒ
ータコイルを配設してなるヒータベースを収納し、その
後、熱伝達特性の良い絶縁材を充填し、ヒータケースの
開口部を金属製カバーで覆って加熱面とし、さらにこの
加熱面となる金属製カバーの表面に、空気が吸収しにく
い波長の熱線を放射するＮｉＯ等からなる熱放射物質を
コーティングすることにより構成し、かつこの炊飯用加
熱板の加熱面と前記炊飯用鍋の底面との間に隙間を設け
た炊飯器。1. A rice cooker main body, a protective frame which is housed in the rice cooker main body and into which a rice cooking pot is inserted, and a hot rice cooker placed on the bottom of the protective frame. The rice heating hot plate has a substantially cylindrical heater case in which a heater base formed by arranging a heater coil on a ceramic plate is housed, and then filled with an insulating material having good heat transfer characteristics. The opening is covered with a metal cover to form a heating surface, and the surface of the metal cover, which is the heating surface, is coated with a heat radiating substance such as NiO that radiates a heat ray having a wavelength that is difficult for air to absorb. A rice cooker having a gap between the heating surface of the rice cooking plate and the bottom surface of the rice cooking pot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11612785A JPH0622491B2 (en) | 1985-05-29 | 1985-05-29 | rice cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11612785A JPH0622491B2 (en) | 1985-05-29 | 1985-05-29 | rice cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61276518A JPS61276518A (en) | 1986-12-06 |
| JPH0622491B2 true JPH0622491B2 (en) | 1994-03-30 |
Family
ID=14679375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11612785A Expired - Lifetime JPH0622491B2 (en) | 1985-05-29 | 1985-05-29 | rice cooker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0622491B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04208112A (en) * | 1990-11-30 | 1992-07-29 | Tiger Vacuum Bottle Co Ltd | Cooking apparatus with heater |
-
1985
- 1985-05-29 JP JP11612785A patent/JPH0622491B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61276518A (en) | 1986-12-06 |
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