JPH0585165B2 - - Google Patents
Info
- Publication number
- JPH0585165B2 JPH0585165B2 JP18816889A JP18816889A JPH0585165B2 JP H0585165 B2 JPH0585165 B2 JP H0585165B2 JP 18816889 A JP18816889 A JP 18816889A JP 18816889 A JP18816889 A JP 18816889A JP H0585165 B2 JPH0585165 B2 JP H0585165B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- heater
- boiling
- water
- liquid
- 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 - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 90
- 238000009835 boiling Methods 0.000 claims description 79
- 239000007788 liquid Substances 0.000 claims description 79
- 238000010438 heat treatment Methods 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 230000007423 decrease Effects 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Landscapes
- Thermally Insulated Containers For Foods (AREA)
- Cookers (AREA)
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は内容液を湯沸しし、また湯沸しと沸騰
温度未満の所定温度に内容液を保温 する内容液
を加熱するハード回路を持つた電気貯湯容器に関
するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention provides an electric hot water storage device having a hard circuit for boiling the liquid content and for heating the liquid content at a predetermined temperature below the boiling temperature. It concerns containers.
(従来の技術)
ハード回路は感温スイツチによつて直接ヒータ
をオン、オフするもので、構成が簡単で安価な上
故障しにくい利点を持ち、ソフト回路と並んで広
く利用されている。多くの場合内容液を沸騰させ
る湯沸しモードと、湯沸し後の内容液を沸騰温度
未満の所定温度に保温するよう加熱する保温モー
ドとを持つている。そして湯沸しモードは1つの
湯沸しヒータに通電して保温モードの場合よりも
高いW数で内容液を加熱するようにしている。(Prior Art) Hard circuits directly turn the heater on and off using a temperature-sensitive switch, and have the advantages of being simple, inexpensive, and hard to break down, and are widely used along with soft circuits. In many cases, it has a boiling mode in which the liquid content is boiled, and a heat retention mode in which the content liquid after boiling is heated to a predetermined temperature below the boiling temperature. In the water boiling mode, electricity is supplied to one water heater to heat the liquid at a higher wattage than in the heat retention mode.
(発明が解決しようとする課題)
湯沸しモードでは保温モードの場合よりも高い
W数で内容液を加熱するので、常温の水でも速い
立上がりで沸騰させることができる。しかし湯沸
しヒータのW数が余り高いと内容液の温度が高く
なつたときヒータの熱が内容液に吸収されにくく
なり、外部に熱が逃げやすくなつて熱損失が大き
くなる。またこれと共にヒータの外部まわりの遮
熱構造も充分にしなければ危険であり重量化およ
びコスト上昇の原因になる。このため実際には湯
沸しヒータのW数は内容液温度が上がつても外部
への熱の逃げが大きくならない程度に抑えられて
いる。したがつて湯沸し時の内容液温度の立上が
りが充分でなく沸騰までに長い時間がかかる。(Problems to be Solved by the Invention) In the water boiling mode, the content liquid is heated at a higher W number than in the warming mode, so even water at room temperature can be brought to a boil quickly. However, if the wattage of the water heater is too high, when the temperature of the liquid inside becomes high, the heat from the heater will be difficult to be absorbed by the liquid inside, and the heat will easily escape to the outside, resulting in a large heat loss. In addition, if the heat shielding structure around the outside of the heater is not sufficient, it will be dangerous and cause an increase in weight and cost. Therefore, in reality, the wattage of the water heater is suppressed to such an extent that even if the temperature of the liquid inside rises, the loss of heat to the outside does not increase. Therefore, when boiling water, the temperature of the liquid content does not rise sufficiently and it takes a long time to boil.
本発明は湯沸しモードの回路構成を改良して前
記従来のような問題点を解消することを目的とす
るものである。 The present invention aims to solve the above-mentioned conventional problems by improving the circuit configuration of the water boiling mode.
(課題を解決するための手段)
本発明は上記のような目的を達成するために、
内容液加熱回路の湯沸しモードで働く湯沸しヒー
タに並列な第2湯沸しヒータを設け、この第2湯
沸しヒータにこの第2湯沸しヒータを沸騰前の所
定温度でオフする感温スイツチを働かせたことを
特徴とするものである。(Means for Solving the Problems) In order to achieve the above objects, the present invention has the following features:
A second water heater is provided in parallel with the water heater that operates in the water boiling mode of the content liquid heating circuit, and a temperature-sensitive switch is provided in the second water heater to turn off the second water heater at a predetermined temperature before boiling. That is.
また内容液加熱回路は内容液を沸騰させる湯沸
しモードと、内容液を沸騰温度未満の所定温度に
保つよう加熱する保温モードとを持ち、前記沸騰
前所定温度は保温モードでの保温温度より大であ
るのが好適であり、感温スイツチはヒータが設け
られる器体壁の使用最低限度液位よりも上方の位
置に設けられているのがよい。 In addition, the content liquid heating circuit has a water boiling mode that boils the content liquid, and a heat retention mode that heats the content liquid to maintain it at a predetermined temperature below the boiling temperature, and the predetermined pre-boiling temperature is higher than the heat retention temperature in the heat retention mode. Preferably, the temperature-sensitive switch is provided at a position above the minimum usable liquid level on the wall of the vessel where the heater is provided.
(作用)
湯沸しモードで湯沸しヒータが働かされると
き、それに並列な第2湯沸しヒータも感温スイツ
チが内容液の沸騰前所定温度を感知してオフする
まで同時に働かされる。このため内容液を沸騰前
所定温度に達するまでは湯沸しヒータおよび第2
湯沸しヒータの2つによつて互いに並列な降圧を
生じない高W数の状態で加熱し、沸騰前所定温度
まで高速で立上がらせることができる。内容液が
沸騰前所定温度に達すると感温スイツチがオフし
て第2湯沸しヒータへの通電を断つので、以後の
加熱は湯沸しヒータ単独による低W数の状態でな
され、内容液の温度が高いことによりヒータの熱
が外部に逃げるようなことを防止することができ
る。(Function) When the water heater is operated in the water boiling mode, the second water heater parallel to it is also operated at the same time until the temperature sensitive switch senses a predetermined pre-boiling temperature of the content liquid and turns it off. Therefore, until the content reaches a predetermined temperature before boiling, the water heater and the
It is possible to heat the water at a high wattage state with two parallel heaters that do not cause pressure drop, and to quickly raise the water to a predetermined temperature before boiling. When the content liquid reaches a predetermined pre-boiling temperature, the temperature-sensitive switch turns off and cuts off the electricity to the second water boiler heater, so subsequent heating is done by the water heater alone at a low wattage, and the temperature of the content liquid is high. This can prevent the heat of the heater from escaping to the outside.
前記沸騰前所定温度が保温モードでの保温温度
より大であると、保温モードから湯沸しモードへ
の切換えが行われたときも、内容液を保温温度か
ら高速に立上がらせることができる。 When the pre-boiling predetermined temperature is higher than the heat retention temperature in the heat retention mode, the content liquid can be raised from the heat retention temperature at high speed even when switching from the heat retention mode to the water boiling mode is performed.
感温スイツチはヒータが設けられる器体壁の使
用最低限度液位よりも上方の位置に設けられてい
ると、内容液が感温スイツチの設置位置よりも下
がるまで減量すると熱容量が小さくその分ヒータ
の熱を吸収しにくくなるが、器体壁の内容液のな
い部分は内容液の影響を受けずヒータからの輻射
熱の影響で内容液よりも昇温が速く、湯沸しモー
ド時内容液が沸騰前所定温度に達するまでに感温
スイツチが沸騰前所定温度を器体壁から感知して
オフする。したがつて内容液が減量によつてヒー
タの熱を吸収しにくくなつている分早期に高W数
加熱状態から低W数加熱状態に切換えることがで
きる。 If the temperature-sensitive switch is installed at a position above the minimum usable liquid level on the wall of the vessel where the heater is installed, if the content of the liquid decreases to below the installation position of the temperature-sensitive switch, the heat capacity will be small and the heater will decrease accordingly. However, the parts of the container wall where there is no liquid are not affected by the liquid, and the temperature rises faster than the liquid due to the influence of radiant heat from the heater. Before the predetermined temperature is reached, the temperature-sensitive switch senses the pre-boiling temperature from the vessel wall and turns it off. Therefore, since the content liquid is less able to absorb the heat of the heater due to the weight loss, the high W number heating state can be switched from the high W number heating state to the low W number heating state at an early stage.
(実施例)
図に示す本発明の実施例について説明する。本
実施例は第1図に示すように器体1がその底部を
樹脂製座体2の突起群2aに回転可能に受けられ
た据え置き状態で使用するタイプの電気ポツトの
場合を示している。器体1は金属製の外装体3を
持ち、その上端に樹脂製の肩体4を上方より嵌め
合わせると共に、この肩体4で金属製の内容器5
の口部を掛け止めている。外装体3の下端には前
記突起群2aへの受載面6aを持つた樹脂製の底
板6が当てがわれ、この底板6に下方より当てが
つた金属製のリング7と内容器5とを金具8とビ
ス9とで連結することによつて内容器5とリング
7とを引き付けて器体1の構成部材相互を固定し
ている。リング7にはさらに下方から樹脂製のリ
ング91を当てがつてビス10で固定し、このリ
ング91と底板6との間に座体2を回転可能に挟
み込んで保持し、器体1と一体に取扱えるように
している。(Example) An example of the present invention shown in the drawings will be described. In this embodiment, as shown in FIG. 1, an electric pot is used in a stationary state in which the bottom portion of the container body 1 is rotatably received by a group of protrusions 2a of a resin seat body 2. The container body 1 has a metal exterior body 3, into which a resin shoulder body 4 is fitted from above, and the metal inner container 5 is fitted with the shoulder body 4 from above.
The mouth part is latched. A bottom plate 6 made of resin and having a receiving surface 6a for the projection group 2a is applied to the lower end of the exterior body 3, and a metal ring 7 and the inner container 5 are applied to the bottom plate 6 from below. By connecting the metal fittings 8 and the screws 9, the inner container 5 and the ring 7 are attracted to each other, and the constituent members of the container body 1 are fixed to each other. A resin ring 91 is further applied to the ring 7 from below and fixed with screws 10, and the seat body 2 is rotatably sandwiched and held between the ring 91 and the bottom plate 6, and is integrated with the vessel body 1. I am making it possible to handle it.
肩体4の後部に形成された軸受部11に樹脂製
の蓋12の後部をヒンジピン13によつて着脱可
能なように連結してあり、蓋12はヒンジピン1
3を中心とした回動によつて開閉される。蓋12
には内容器5の口部を閉じる金属製の内蓋13が
設けられると共に、内部に内容液を加圧するベロ
ーズポンプ14が設けられている。15はポンプ
14の操作板、16はポンプ14からの給気路、
17は蒸気逃し通路、18は給気路16と蒸気逃
し通路18とを操作板15の操作時と非操作時と
で選択使用するための切換弁、19はその弁孔で
ある。21は蓋12を閉じ状態にロツクするロツ
ク部材である。 The rear part of a resin lid 12 is removably connected to a bearing part 11 formed at the rear part of the shoulder body 4 by a hinge pin 13.
It is opened and closed by rotation around 3. Lid 12
is provided with a metal inner lid 13 that closes the mouth of the inner container 5, and is also provided with a bellows pump 14 that pressurizes the liquid inside. 15 is an operation panel of the pump 14, 16 is an air supply path from the pump 14,
17 is a steam relief passage; 18 is a switching valve for selectively using the air supply passage 16 and the steam relief passage 18 when operating the operation plate 15 and when not operating it; and 19 is a valve hole thereof. 21 is a locking member that locks the lid 12 in the closed state.
内容器5の底部には注出管路22が接続されて
いる。注出管路22は内容器5の全部で立上がつ
て肩体4の前部に突出する通路カバー23内に位
置する逆U字路22aにつながり、その先端の吐
出口22bが通路カバー23の底部に設けられた
注液ガイド24の上方に臨んでいる。これによつ
て注出管路22はポンプ14による加圧で押出さ
れようとする内容液を案内して吐出口22bから
吐出される。吐出液は一旦大気に開放されて圧力
や混合空気を発散させた後、注液ガイド24に流
れ込み静かな流れで注液される。 A pouring pipe line 22 is connected to the bottom of the inner container 5. The spouting pipe 22 is connected to an inverted U-junction 22a located in a passage cover 23 that rises up from the entire inner container 5 and protrudes from the front part of the shoulder body 4, and the discharge port 22b at the tip thereof is connected to the passage cover 23. It faces above the liquid injection guide 24 provided at the bottom of the. As a result, the spouting conduit 22 guides the content liquid to be extruded by the pressure applied by the pump 14, and the liquid is discharged from the discharge port 22b. The discharged liquid is once exposed to the atmosphere to release pressure and mixed air, and then flows into the liquid injection guide 24 and is injected in a quiet flow.
内容器5の底部下面に形成されている凹部5a
内にヒータ31が当てがわれている。ヒータ31
は第2図に示すようにドーナツ形のマイカ基板3
2に保温ヒータ31a、湯沸しヒータ31b、湯
沸しヒータ31bの補助として用いる第2湯沸し
ヒータ31cを巻付けたものであり、これをマイ
カ板33,33間に挟み込み絶縁した状態でドー
ナツ形のアルミニウムケース34に収容してい
る。ケース34の背面にはアルミニウム厚板より
なる放熱板35および鋼板製の遮熱板36を順次
当てがい板ばね37によつて押圧保持している。
板ばね37は内容器5の底部下面に金具38によ
つて少しの隙間を持つように取付けられた金属製
の遮熱板39にビス41で取付けられている。遮
熱板39にはビス41を共用して温度ヒユーズ4
2も取付けられている。 A recess 5a formed on the bottom surface of the inner container 5
A heater 31 is applied inside. Heater 31
is a donut-shaped mica substrate 3 as shown in Figure 2.
A heat retaining heater 31a, a water boiling heater 31b, and a second water boiling heater 31c used as an auxiliary to the water boiling heater 31b are wound around the water heater 31b, and these are sandwiched between mica plates 33, 33 for insulation, and a donut-shaped aluminum case 34 is installed. It is accommodated in A heat radiating plate 35 made of a thick aluminum plate and a heat shield plate 36 made of a steel plate are successively pressed and held on the back side of the case 34 by a leaf spring 37.
The leaf spring 37 is attached with screws 41 to a metal heat shield plate 39 that is attached to the lower surface of the bottom of the inner container 5 with a metal fitting 38 with a small gap. The heat shield plate 39 uses a screw 41 to connect the temperature fuse 4.
2 is also installed.
内容器5の背部の使用最低限度液位Lより高さ
Hだけ上位に形成された段落し面5bには湯沸し
用サーモスタツト43および高速湯沸し用サーモ
スタツト44が金具45によつて取付けられてい
る(第2図)。また内容器5の底部下面中央には
過昇温防止用サーモスタツト46がケース34の
中央孔34aを利用して当てがわれている。サー
モスタツト46は遮熱板39に金具47により取
付けられ、ヒータ31との間には筒状隔壁48が
設けられヒータ31からの直接の熱影響を防止し
ている。 A thermostat 43 for boiling water and a thermostat 44 for high-speed water boiling are attached to a stepped surface 5b formed at a height H above the minimum usable liquid level L at the back of the inner container 5 by metal fittings 45. (Figure 2). Further, a thermostat 46 for preventing excessive temperature rise is placed at the center of the lower surface of the bottom of the inner container 5 using the center hole 34a of the case 34. The thermostat 46 is attached to a heat shield plate 39 with metal fittings 47, and a cylindrical partition wall 48 is provided between the thermostat 46 and the heater 31 to prevent direct thermal influence from the heater 31.
ヒータ31からは第3図に示すように各ヒータ
31a〜31cの個別のリード線311〜313と
共通のリード線314とが出ており、ヒータ31
a〜31c、サーモスタツト43,44,46、
温度ヒユーズ42および図示しない器体前面に設
けられる保温、湯沸し各ランプ49,50等が第
4図のように結線されて内容液加熱回路を構成し
ている。 As shown in FIG. 3, individual lead wires 31 1 to 31 3 of each heater 31 a to 31 c and a common lead wire 31 4 come out from the heater 31 .
a to 31c, thermostats 43, 44, 46,
A temperature fuse 42 and lamps 49, 50 for keeping warm and boiling water (not shown) provided on the front surface of the container body are connected as shown in FIG. 4 to constitute a liquid heating circuit.
この回路図において51は蒸気の温度によつて
沸騰を検知する蒸気センサ、52はリレー、52
aはリレー接点、53は再沸騰スイツチである。
再沸騰スイツチ53は器体1の前面の液位表示窓
54が設けられている樹脂パネル55の下部裏側
にランプ49,50と共に位置し、その操作ボタ
ン53aはパネル55の透孔55aに臨み、パネ
ル55の表面のカバーシート56を介し押圧操作
されるようにしてある。 In this circuit diagram, 51 is a steam sensor that detects boiling based on the temperature of steam, 52 is a relay, and 52
A is a relay contact, and 53 is a reboiling switch.
The reboiling switch 53 is located together with the lamps 49 and 50 on the lower back side of the resin panel 55 where the liquid level display window 54 is provided on the front side of the vessel body 1, and its operation button 53a faces the through hole 55a of the panel 55. It is configured to be operated by pressing through a cover sheet 56 on the surface of the panel 55.
底板6には下向きの機器ボツクス6aが設けら
れ、このボツクス6aの一部に配線用のターミナ
ル61が設けられている。また座体2の後部に電
源との接続のためのマグネツトプラグ受け62が
設けられている。 A downward facing equipment box 6a is provided on the bottom plate 6, and a wiring terminal 61 is provided in a part of this box 6a. Further, a magnetic plug receiver 62 for connection to a power source is provided at the rear of the seat body 2.
第4図の電気回路について説明する。保温ヒー
タ31aは保温モードで単独使用されて内容液を
例えば86℃前後から92℃程度までの所定の温度域
に保温するように加熱するもので、内容液の自然
放熱とのバランス上保温を達成する。このため
25W程度のものを使用している。湯沸しヒータ3
1bおよび第2湯沸しヒータ31cは互いに並列
であつて湯沸しモード時に同時使用されて800W
程度の加熱を行い内容液の温度を高速で立上がら
せるようにしている。しかし800Wでの加熱によ
つてヒータ31b,31cの熱が外部に逃げやす
くなる例えば98℃程度の内容液温度となつたとき
に湯沸しヒータ31bを単独使用することによ
り、ヒータの熱が外部に逃げにくくなる400W程
度の加熱を行うようにしてある。このため湯沸し
ヒータ31b及び第2湯沸しヒータ31cは共に
400Wのものとし、第2湯沸しヒータ31cを単
独でオン、オフする高速湯沸し用サーモスタツト
44は98℃以上でオフするものとしてある。 The electric circuit shown in FIG. 4 will be explained. The heat retention heater 31a is used alone in the heat retention mode to heat the liquid content to a predetermined temperature range, for example, from around 86°C to around 92°C, and achieves heat retention in balance with the natural heat dissipation of the liquid content. do. For this reason
I am using something around 25W. Water heater 3
1b and the second water heater 31c are connected in parallel with each other and are used simultaneously in the water boiling mode to generate 800W.
The temperature of the liquid inside is raised rapidly by heating the liquid to a certain degree. However, due to heating at 800W, the heat of the heaters 31b and 31c tends to escape to the outside.For example, if the water boiler heater 31b is used alone when the content temperature reaches about 98℃, the heat of the heaters can escape to the outside. It is designed to heat at around 400W, which makes it difficult to use. Therefore, both the water heater 31b and the second water heater 31c are
The high-speed water boiling thermostat 44, which turns on and off the second water heater 31c independently, is designed to turn off at 98° C. or higher.
一方湯沸し用サーモスタツト43は、内容液が
補給される等によつて40℃以下になつたときオン
し、湯沸しヒータ31bおよび第2湯沸しヒータ
31cの双方が同時に通電される湯沸しモードに
回路を切換える。このとき保温ヒータ31aも通
電されるので湯沸しモードでの実際のヒータW数
は825Wとなつている。 On the other hand, the water boiling thermostat 43 turns on when the temperature drops below 40°C due to replenishment of the liquid content, etc., and switches the circuit to a water boiling mode in which both the water boiling heater 31b and the second water boiling heater 31c are energized at the same time. . At this time, the heat-retaining heater 31a is also energized, so the actual heater wattage in the water boiling mode is 825W.
サーモスタツト43がオンしたとき蒸気センサ
51を介しリレー52が通電されるのでリレー接
点52aがオンし、リレー52を自己保持すると
共に湯沸しヒータ31b、第2湯沸しヒータ31
c、双方に通電するバイパス回路を形成するの
で、湯沸しモードに切換つて内容液が40℃を上回
る温度に回復し湯沸し用サーモスタツト43がオ
フしても、回路は湯沸しモード状態に保たれる。 When the thermostat 43 is turned on, the relay 52 is energized via the steam sensor 51, so the relay contact 52a is turned on, self-holding the relay 52, and also turning on the water heater 31b and the second water heater 31.
c. By forming a bypass circuit that conducts electricity to both sides, the circuit remains in the water boiling mode even if the water boiling mode is switched to, the temperature of the liquid content recovers to over 40°C, and the water boiling thermostat 43 is turned off.
湯沸しモードでは特にヒータ31b,31cの
同時通電によつて内容液温度が高速で立上がる。
内溶液が98℃に達すると高速湯沸し用サーモスタ
ツト44がオフし第2湯沸しヒータ31cの通電
が断たれる。これによつて湯沸しヒータ31bと
保温ヒータ31aとだけによる425Wでの加熱に
切換わるので、内容液が昇温によつてヒータ熱を
吸収しにくくなつていてもヒータ31の熱は半減
するのでヒータ31の熱が外部に逃げにくくな
り、少ない熱量であるが充分な熱効率で内容液を
比較的短時間に沸騰まで昇温させることができ
る。 In the water boiling mode, the temperature of the liquid content rises at a high speed especially by simultaneous energization of the heaters 31b and 31c.
When the internal solution reaches 98° C., the high-speed water boiling thermostat 44 is turned off and the power supply to the second water boiling heater 31c is cut off. This switches to heating at 425W using only the hot water heater 31b and the heat retention heater 31a, so even if the content liquid becomes difficult to absorb heater heat due to temperature rise, the heat of the heater 31 is halved, so the heater The heat of 31 becomes difficult to escape to the outside, and although the amount of heat is small, the temperature of the content liquid can be raised to boiling in a relatively short time with sufficient thermal efficiency.
内容液が沸騰するとそのときの蒸気温度で蒸気
逃し通路17の途中にある蒸気センサ51がオフ
されてリレー52への通電を断つのでリレー接点
52aがオフされ、回路を保温モードに戻す。 When the content liquid boils, the steam temperature at that time turns off the steam sensor 51 located in the middle of the steam release passage 17 and cuts off the power to the relay 52, so the relay contact 52a is turned off and the circuit returns to the heat retention mode.
これによつて内容液は保温ヒータ31aのみに
よる25Wでの加熱状態となり、加熱よりも内容液
の放熱の方が大きく内容液は降温していくが、保
温温度域に達すると加熱と放熱のバランスがとれ
るので内容液は保温温度域に保たれる。 As a result, the content liquid is heated at 25W only by the heat retention heater 31a, and the heat radiation of the content liquid is greater than the heating, and the temperature of the content liquid decreases, but when the temperature range is reached, there is a balance between heating and heat radiation. can be removed, so the content liquid can be kept within the insulating temperature range.
保温モード中再沸騰スイツチ53がオンされる
とこれによつても沸騰しヒータ31b、第2沸騰
しヒータ31c双方の通電とリレー52の通電と
が達成され、回路は前記湯沸し用サーモスタツト
43による場合と同様湯沸しモードに切換わる。
このとき高速湯沸し用サーモスタツト44は内容
液が保温温度域にあることでオンしており、内容
液が98℃程度に昇温するまで第2湯沸しヒータ3
1cが働いて内容液の温度を急速に立上がらせ
る。 When the reboiling switch 53 is turned on during the heat retention mode, this also energizes both the boiling heater 31b and the second boiling heater 31c and the relay 52, and the circuit is controlled by the water boiling thermostat 43. Switch to boiling water mode as usual.
At this time, the high-speed water boiling thermostat 44 is turned on because the content liquid is in the heat retention temperature range, and the second water boiling heater 3 is turned on until the content liquid reaches a temperature of about 98°C.
1c works to rapidly raise the temperature of the liquid inside.
以上の回路動作のタイムチヤートを内容液温度
の変化との関係で示せば第5図の通りである。 FIG. 5 shows a time chart of the above circuit operation in relation to changes in the temperature of the liquid inside.
内容液が液位L近傍にまで減量しているときに
湯沸しモードが行われるとき、内容液量が少ない
分熱容量が小さくヒータ31の熱を吸収しにくく
なつている。しかし高速湯沸し用サーモスタツト
44は液位Lよりも高さHだけ上位にあつて内容
器5の内溶液のない部分に接しているので、内容
液の温度の影響を受けにくくヒータ31からの輻
射熱の影響を受けやすくなるので、内容液よりも
昇温が速い。このため高速湯沸し用サーモスタツ
ト44は内容液が沸騰前所定温度98℃に達する前
にその温度を感知してオフし、第2湯沸しヒータ
31cの使用を停止するので、内容液が減量して
ヒータ31の熱を吸収しにくくなつている分、ヒ
ータ31の高W数加熱状態から低W数加熱状態へ
の切換えを早期に行うことができる。したがつて
内容液が減量してヒータ31の熱を吸収しにくく
なつて高速湯沸しによるヒータ31の熱の外部へ
の逃げが大きくなるのを防止することができる。 When the water boiling mode is performed when the content liquid has decreased to near the liquid level L, the heat capacity is small due to the small amount of content liquid, making it difficult to absorb the heat of the heater 31. However, since the high-speed water boiling thermostat 44 is located above the liquid level L by the height H and is in contact with the part of the inner container 5 where there is no solution, it is not easily affected by the temperature of the inner liquid and the radiant heat from the heater 31 is not affected by the temperature of the inner liquid. The temperature rises faster than the content liquid because it is more susceptible to the effects of Therefore, the high-speed water boiling thermostat 44 senses the temperature before the content reaches the pre-boiling temperature of 98°C and turns off the water, stopping the use of the second water boiling heater 31c. Since it is difficult to absorb the heat of the heater 31, the heater 31 can be switched from a high W number heating state to a low W number heating state at an early stage. Therefore, it is possible to prevent the content liquid from decreasing in volume and becoming difficult to absorb the heat from the heater 31, thereby preventing the heat from the heater 31 from escaping to the outside due to high-speed water boiling.
なお過昇温防止用サーモスタツト46は110℃
程度の異常昇温があつたときにオフしそれ以上の
昇温を防止すると共に、正常温度に回復するとオ
ンして通常使用状態に戻す。また温度ヒユーズ4
2は空炊き等で140℃程度まで昇温したとき溶断
して安全を図る。 In addition, the thermostat 46 for preventing excessive temperature rise is set at 110℃.
When the temperature rises to an abnormal level, it turns off to prevent further temperature rise, and when the temperature returns to normal, it turns on and returns to normal use. Also temperature fuse 4
2 is for safety by melting when the temperature rises to around 140℃ due to dry cooking etc.
保温モードと湯沸しモードとの切換え方式は前
記実施例に限らず種々のパターンで行つてよく、
湯沸しモードで使用される湯沸しヒータに第2湯
沸しヒータを並列に接続し、この第2湯沸しヒー
タを沸騰前の所定温度以上で単独にオフできるよ
うにすればよい。 The switching method between the heat retention mode and the water boiling mode is not limited to the above embodiment, and may be performed in various patterns.
A second water heater may be connected in parallel to the water heater used in the water boiling mode, and the second water heater may be turned off independently at a predetermined temperature or higher before boiling.
(発明の効果)
本発明によれば、湯沸しモードで湯沸しヒータ
が働かされるとき、それに並列な第2湯沸しヒー
タも感温スイツチが内容液の沸騰前所定温度を感
知してオフするまで同時に働かされるため、内容
液を沸騰前所定温度に達するまでは湯沸しヒータ
および第2湯沸しヒータの2つによつて互いに並
列な降圧を生じない高W数の状態で加熱し、沸騰
前所定温度まで高速で立上がらせることができ、
内容液が沸騰前所定温度に達すると感温スイツチ
がオフして第2湯沸しヒータへの通電を断つの
で、以後の加熱は湯沸しヒータ単独による低W数
の状態でなされ、内容液の温度が高いことにより
ヒータの熱が外部に逃げるようなことを防止する
ことができる。したがつて沸騰までの所要時間を
ヒータ熱の外部への逃げによる熱損失と安全上の
問題なしに短縮することができる。(Effects of the Invention) According to the present invention, when the water heater is operated in the water boiling mode, the second water heater in parallel with it is also operated at the same time until the temperature sensitive switch senses a predetermined pre-boiling temperature of the content liquid and turns it off. Therefore, until the content reaches the pre-boiling predetermined temperature, the water boiler heater and the second water boiler heater are heated at a high wattage state that does not cause pressure drop in parallel with each other, and then the content is heated at high speed until the pre-boiling predetermined temperature is reached. can be raised,
When the content liquid reaches a predetermined pre-boiling temperature, the temperature-sensitive switch turns off and cuts off the electricity to the second water boiler heater, so subsequent heating is done by the water heater alone at a low wattage, and the temperature of the content liquid is high. This can prevent the heat of the heater from escaping to the outside. Therefore, the time required for boiling can be shortened without causing heat loss and safety problems due to escape of heater heat to the outside.
前記沸騰前所定温度が保温モードでの保温温度
より大であると、保温モードから湯沸しモードへ
の切換えが行われたときも、内容液を保温温度か
ら高速に立上がらせることができ、前記と同じ利
点が得られる。 If the pre-boiling predetermined temperature is higher than the keep-warm temperature in the keep-warm mode, even when the keep-warm mode is switched to the boiling water mode, the content liquid can be raised quickly from the keep-warm temperature, and as described above. You get the same benefits.
感温スイツチはヒータが設けられる器体壁の使
用最低限度液位よりも上方の位置に設けられてい
ると、内容液が感温スイツチの設置位置よりも下
がるまで減量すると熱容量が小さくその分ヒータ
の熱を吸収しにくくなるが、器体壁の内容液のな
い部分は内容液の影響を受けずヒータからの輻射
熱の影響で内容液よりも昇温が速く、湯沸しモー
ド時内容液が沸騰前所定温度に達するまでに感温
スイツチが沸騰前所定温度を器体壁から感知して
オフするので、内容液が減量によつてヒータの熱
を吸収しにくくなつている分早期に高W数加熱状
態から低W数加熱状態に切換えることができ、内
容液が減量してヒータの熱を吸収しにくくなつて
高W数での湯沸しによるヒータの熱の外部への逃
げが大きくなるのを防止することができる。 If the temperature-sensitive switch is installed at a position above the minimum usable liquid level on the wall of the vessel where the heater is installed, if the content of the liquid decreases to below the installation position of the temperature-sensitive switch, the heat capacity will be small and the heater will decrease accordingly. However, the parts of the container wall where there is no liquid are not affected by the liquid, and the temperature rises faster than the liquid due to the influence of radiant heat from the heater. The temperature-sensitive switch detects the pre-boiling temperature from the container wall and turns it off before the pre-boiling temperature reaches the pre-boil temperature, so it is difficult to absorb the heat from the heater due to the volume of the liquid in the liquid, so high W-number heating is possible at an early stage. It is possible to switch from the low W number heating state to the low W number heating state, which prevents a large amount of heater heat from escaping to the outside due to water boiling at a high W number, as the content liquid decreases and becomes difficult to absorb the heater heat. be able to.
第1図は本発明の一実施例を示す縦断面図、第
2図は内容器背部のサーモスタツト取付部の背面
図、第3図はヒータの下面図、第4図は内容液加
熱回路図、第5図は内容液の昇温と回路動作のタ
イムチヤートとの関係を示す図である。
1……器体、5……内容器、31……ヒータ、
31a……保温ヒータ、31b……湯沸しヒー
タ、31c……第2湯沸しヒータ、43……湯沸
し用サーモスタツト、44……高速湯沸し用サー
モスタツト、52……リレー、52a……リレー
接点、53……再沸騰スイツチ、L……使用最低
限度液位。
Fig. 1 is a longitudinal sectional view showing an embodiment of the present invention, Fig. 2 is a rear view of the thermostat mounting part on the back of the inner container, Fig. 3 is a bottom view of the heater, and Fig. 4 is a diagram of the content heating circuit. , FIG. 5 is a diagram showing the relationship between the temperature rise of the content liquid and the time chart of circuit operation. 1... Container body, 5... Inner container, 31... Heater,
31a... Heat retention heater, 31b... Water boiling heater, 31c... Second water boiling heater, 43... Water boiling thermostat, 44... High speed water boiling thermostat, 52... Relay, 52a... Relay contact, 53... ...Reboiling switch, L...minimum usable liquid level.
Claims (1)
ヒータに並列な第2湯沸しヒータを設け、この第
2湯沸しヒータにこの第2湯沸しヒータを沸騰前
の所定温度でオフする感温スイツチを働かせたこ
とを特徴とする電気貯湯容器。 2 内容液加熱回路は内容液を沸騰させる湯沸し
モードと、内容液を沸騰温度未満の所定温度に保
つよう加熱する保温モードとを持ち、前記沸騰前
所定温度は保温モードでの保温温度より大である
請求項1記載の電気貯湯容器。 3 感温スイツチはヒータが設けられる器体壁の
使用最低限度液位よりも上方の位置に設けられて
いる請求項1または2に記載の電気貯湯容器。[Scope of Claims] 1. A second water heater is provided in parallel with the water heater that operates in the water boiling mode of the content liquid heating circuit, and the second water heater is provided with a temperature-sensitive device that turns off the second water heater at a predetermined temperature before boiling. An electric hot water storage container featuring a working switch. 2 The content liquid heating circuit has a water boiling mode for boiling the content liquid, and a heat retention mode for heating the content liquid to maintain it at a predetermined temperature below the boiling temperature, and the predetermined pre-boiling temperature is higher than the heat retention temperature in the heat retention mode. The electric hot water storage container according to claim 1. 3. The electric hot water storage container according to claim 1 or 2, wherein the temperature-sensitive switch is provided at a position above the lowest usable liquid level on the wall of the container where the heater is provided.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18816889A JPH04288107A (en) | 1989-07-19 | 1989-07-19 | Electric hot-water storage container |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18816889A JPH04288107A (en) | 1989-07-19 | 1989-07-19 | Electric hot-water storage container |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04288107A JPH04288107A (en) | 1992-10-13 |
JPH0585165B2 true JPH0585165B2 (en) | 1993-12-06 |
Family
ID=16218944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18816889A Granted JPH04288107A (en) | 1989-07-19 | 1989-07-19 | Electric hot-water storage container |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04288107A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2404099B (en) * | 2000-02-01 | 2005-03-23 | Strix Ltd | Electric heaters |
-
1989
- 1989-07-19 JP JP18816889A patent/JPH04288107A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH04288107A (en) | 1992-10-13 |
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