JPH02144019A - Electric water boiler - Google Patents
Electric water boilerInfo
- Publication number
- JPH02144019A JPH02144019A JP29866788A JP29866788A JPH02144019A JP H02144019 A JPH02144019 A JP H02144019A JP 29866788 A JP29866788 A JP 29866788A JP 29866788 A JP29866788 A JP 29866788A JP H02144019 A JPH02144019 A JP H02144019A
- Authority
- JP
- Japan
- Prior art keywords
- heating element
- thyristor
- relay
- temperature
- relay contact
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- 238000009835 boiling Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 230000002265 prevention Effects 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract 1
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 206010049976 Impatience Diseases 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Cookers (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、容器内に収容された液体を加熱して沸す電気
湯沸し器に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electric water heater that heats and boils a liquid contained in a container.
従来の技術
従来の電気湯沸し器は、第２図に示すような構成になっ
ていた。すなわち、交流電源１１に容器内の液体を加熱
する湯沸し用発熱体１２を接続し、かつこの湯沸し用発
熱体１２はリレー１３により通電制御されるもので、こ
のリレー１３は、リレー接点１３２Ｌと、リレーコイル
１３ｂにより構成されている。保温用発熱体１４はサイ
リスタ１６により通電制御され、また前記容器内の液体
の温度は感温素子１６により検知される。前記リレーコ
イル１３ｂおよびサイリスタ１６は制御回路１７により
制御されるもので、湯沸し時においては、リレー接点１
３１Ｌが閉じて湯沸し用発熱体１２への通電を行ない、
かつ保温は、感温素子１６が所定温度以上か否かにより
、制御回路１７がサイリスタ１５をＯＮ 、ＯＦＦ制御
することによって行なっていた。BACKGROUND OF THE INVENTION A conventional electric water heater has a configuration as shown in FIG. That is, a heating element 12 for boiling water that heats the liquid in a container is connected to an AC power source 11, and the heating element 12 for heating water is controlled to be energized by a relay 13, and this relay 13 has a relay contact 132L, It is composed of a relay coil 13b. The heat-retaining heating element 14 is energized and controlled by a thyristor 16, and the temperature of the liquid in the container is detected by a temperature sensing element 16. The relay coil 13b and the thyristor 16 are controlled by a control circuit 17, and when boiling water, the relay contact 1
31L closes and energizes the heating element 12 for boiling water,
In addition, heat retention is performed by the control circuit 17 controlling the thyristor 15 to turn on or off depending on whether the temperature of the temperature sensing element 16 is higher than a predetermined temperature.
発明が解決しようとする課題
しかしながら、このような従来の構成では、湯沸し用発
熱体１２と保温用発熱体１４の両方が必要であるため、
コストがかかるとともに、湯沸し７用発熱体１２と保温
用発熱体１４の消費電力が約１桁異なり、そして少量で
も沸して保温できるように容器の底部に両方の発熱体１
２．１４を設ける場合には、発熱体の構成が複雑になる
とともに、スペースがないため、保温用発熱体１４の線
径が細くなって切れやすく、かつ巻きにくい等の問題点
があった。Problems to be Solved by the Invention However, in such a conventional configuration, both the heating element 12 for boiling water and the heating element 14 for keeping warm are required.
In addition to being expensive, the power consumption of the heating element 12 for the water boiler 7 and the heating element 14 for keeping the water warm is about an order of magnitude different, and both heating elements 1 are placed at the bottom of the container so that even a small amount can be boiled and kept warm.
In the case of providing 2.14, the structure of the heating element becomes complicated, and since there is no space, there are problems such as the wire diameter of the heat-retaining heating element 14 becomes thin, easy to break, and difficult to wind.
本発明はこのような問題点を解決した電気湯沸し器を提
供することを目的とするものである。The object of the present invention is to provide an electric water heater that solves these problems.
課題を解決するための手段
上記課題を解決するために、本発明の電気湯沸し器は１
発熱体を１個とし、湯沸し時においては、リレー接点に
より前記発熱体に連続通電して湯沸しを行ない、かつ保
温時においては、サイリスタで前記発熱体に断続通電し
て保温を行なうようにしたものである。Means for Solving the Problems In order to solve the above problems, the electric water heater of the present invention has the following features:
One heating element is used, and when boiling water, the heating element is continuously energized by a relay contact to boil the water, and when keeping warm, the heating element is intermittently energized by a thyristor to keep the water warm. It is.
作用
本発明の電気湯沸し器は、上記した構成とすることによ
り、湯沸しと保温を１個の発熱体で行なうことができる
ため、発熱体の構成が簡単になってその信頼性が向上す
るとともに、コスト的にも安価に得ることができる。Function The electric water heater of the present invention has the above-described configuration, so that boiling water and keeping warm water can be performed with one heating element, which simplifies the configuration of the heating element and improves its reliability. It can also be obtained at low cost.
実施例
以下、本発明の一実施例を第１図にもとづいて説明する
。第１図において、交流電源１には容器内の液体を加熱
する発熱体２（ここでは７００Ｗとする）を接続してい
る。また前記発熱体２はリレー３により通電制御される
もので、このリレー３は、リレー接点３ａとリレーコイ
ル３ｂより構成されている。また前記発熱体２を通電制
御するサイリスタ４には過電流防止素子６（ここでは２
人の電流ヒユーズで構成している）が直列に接続されて
置皿回路を構成し、この直列回路は前記リレー３のリレ
ー接点３ａに並列接続されている。EXAMPLE Hereinafter, an example of the present invention will be described based on FIG. In FIG. 1, an AC power source 1 is connected to a heating element 2 (here, 700 W) that heats the liquid in the container. Further, the heating element 2 is energized and controlled by a relay 3, and this relay 3 is composed of a relay contact 3a and a relay coil 3b. In addition, the thyristor 4 that controls the energization of the heating element 2 has an overcurrent prevention element 6 (here, 2
(consisting of human current fuses) are connected in series to form a tray circuit, and this series circuit is connected in parallel to the relay contact 3a of the relay 3.
前記容器内の液体の温度は感温素子６により検知される
。また制御回路７は湯沸し中は前記リレーコイル３ｂに
ＯＮ信号を出力し、かつ保温中は前記感温素子８の温度
が所定値（ここでは９６℃とする）以上であれば０ＦＦ
Ｌ、所定値未満であれば、所定の比率（ここでは交流電
源１０１周期ＯＮ、９周期ＯＦＦとする）でＯＮ 、Ｏ
ＦＦを繰り返すようにサイリスタ４に点弧信号を出力す
るものである。The temperature of the liquid in the container is detected by a temperature sensing element 6. Further, the control circuit 7 outputs an ON signal to the relay coil 3b during boiling water, and turns OFF when the temperature of the thermosensing element 8 is equal to or higher than a predetermined value (here, 96° C.) during heat retention.
L, if it is less than a predetermined value, it is turned on and off at a predetermined ratio (here, the AC power supply is 101 cycles ON and 9 cycles OFF).
This outputs an ignition signal to the thyristor 4 so as to repeat FF.
上記一実施例の回路構成において、次にその動作を説明
する。まず湯沸し時においては、制御回路７のＯＮ信号
によりリレーコイル３ｂがＯＮし、これにより、リレー
接点３ａが閉じて発熱体２が発熱し、７００Ｗで湯沸し
を行なう。一方、保温になると、リレー接点３′ｌＬは
開き、そして感温素子６が検知した容器内の液体の温度
が９６℃以上であれば、サイリスタ４もＯＦＦしている
が、９６℃未満であれば、制御回路７は抵抗８を通じて
サイリスタ４に、サイリスタ４が交流電源１の１周期Ｏ
Ｎ、９周期ＯＦＦとなるように電源に同期した点弧信号
を出力するもので、これにより、発熱体２は７０Ｗ（７
００Ｗの１０係）で容器内の液体を加熱し、保温を行な
う。また、制御回路の故障、ノイズによる誤動作等でサ
イリスタ４が連続通電になった場合は、サイリスタ４に
通常の１０倍の電流が流れ、サイリスタ４が異常発熱し
て火災等を起こす危険があるが、この場合、電流ヒユー
ズよりなる過電流防止素子６によりサイリスタ４の通電
を停止するように構成している。Next, the operation of the circuit configuration of the above embodiment will be explained. First, when boiling water, the ON signal from the control circuit 7 turns on the relay coil 3b, which closes the relay contact 3a and causes the heating element 2 to generate heat, boiling water at 700W. On the other hand, when the temperature is kept warm, the relay contact 3'lL opens, and if the temperature of the liquid in the container detected by the temperature sensing element 6 is 96°C or higher, the thyristor 4 is also turned off, but if it is below 96°C, then the thyristor 4 is turned off. For example, the control circuit 7 connects the thyristor 4 to the thyristor 4 through the resistor 8, and the thyristor 4
It outputs an ignition signal synchronized with the power supply so that it is OFF for 9 cycles.This causes the heating element 2 to output 70W (7
Heat the liquid in the container with 00W (10 units) to keep it warm. In addition, if the thyristor 4 becomes continuously energized due to a control circuit failure, malfunction due to noise, etc., 10 times the normal current will flow through the thyristor 4, which may cause the thyristor 4 to generate abnormal heat and cause a fire. In this case, the thyristor 4 is configured to be de-energized by an overcurrent prevention element 6 consisting of a current fuse.
なお、本実施例では過電流防止素子６を電流ヒユーズで
構成、したが、難燃性抵抗、ヒユーズ抵抗器などで構成
してもよいものである。In this embodiment, the overcurrent prevention element 6 is constructed of a current fuse, but it may also be constructed of a flame retardant resistor, a fuse resistor, or the like.
発明の効果
上記実施例の説明から明らかなように本発明によれば、
１個の発熱体を使用し、湯沸し中はリレー接点により前
記発熱体に連続通電して湯沸しを行ない、かつ保温中は
サイリスタで前記発熱体に断続通電して保温を行なうよ
うにしているため、発熱体の構成が簡単になって、その
信頼性を向上させることができるとともに、コスト的に
も安価に得ることができる。Effects of the Invention As is clear from the description of the above embodiments, according to the present invention,
One heating element is used, and during boiling water, the heating element is continuously energized by a relay contact to boil the water, and while keeping the water warm, a thyristor is used to intermittently energize the heating element to keep the water warm. The structure of the heating element is simplified, its reliability can be improved, and it can be obtained at low cost.
また、サイリスタの通電電流は瞬間的には大きいが、実
効値は小さいため、従来構成と同程度のサイリスタを使
用でき、実用性にすぐれているものである。さらにサイ
リスタに大電流が流れて異常に発熱した場合には、過電
流防止素子によりサイリスタへの通電を停止することが
できるため、安全性の面でもすぐれているものである。Further, although the current flowing through the thyristor is momentarily large, the effective value is small, so the same thyristor as in the conventional configuration can be used, and the structure is highly practical. Furthermore, if a large current flows through the thyristor and it generates abnormal heat, the overcurrent prevention element can stop the energization to the thyristor, which is excellent in terms of safety.
第１図は本発明の一実施例を示す電気湯沸し器の回路図
、第２図は従来の電気湯沸し器の回路図である。
２・・・・・・発熱体、３ａ・・・・・・リレー接点、
３ｂ・旧・・リレーコイル、４・・・・・・サイリスタ
、６・・・・・・過電流防止素子、６・・・・・・感温
素子、７・・・・・・制御回路。
代理人の氏名 弁理士 粟 野 重 孝 ほか１名第１
図
第 ２ 図
２−・−発熱体
３ａ、−リレー利し急
３ｂ−リレーコイルし
４゛−ブイリス！
５−え１慢気劾止桑子
６・−るｆＬ素菩
７− 制＃図分
ＩグFIG. 1 is a circuit diagram of an electric water heater showing an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional electric water heater. 2... Heating element, 3a... Relay contact,
3b Old... Relay coil, 4... Thyristor, 6... Overcurrent prevention element, 6... Temperature sensing element, 7... Control circuit. Name of agent: Patent attorney Shigetaka Awano and 1 other person 1st
Figure 2 Figure 2 - - Heating element 3a, - Relay switch 3b - Relay coil 4゛ - Builis! 5-e1 arrogance and impatience 6.-ru fL Sobo 7- System #Zubun Igu
Claims (1)
御を行なうリレー接点と、このリレー接点に並列接続さ
れ、かつ前記発熱体の通電制御を行なうサイリスタと過
電流防止素子を直列に接続した直列回路と、前記リレー
接点の開閉制御を行なうリレーコイルと、前記容器内の
液体の温度を検知する感温素子と、湯沸し中は前記リレ
ーコイルにＯＮ信号を出力し、かつ保温中は前記感温素
子の温度が所定値以上であればＯＦＦし、所定値未満で
あれば前記サイリスタが所定の比率でＯＮ、ＯＦＦを繰
り返すように点弧信号を前記サイリスタに出力する制御
回路とにより構成した電気湯沸し器。A heating element that heats the liquid in the container, a relay contact that controls the energization of the heating element, a thyristor that is connected in parallel to the relay contact, and that controls the energization of the heating element, and an overcurrent prevention element connected in series. a series circuit, a relay coil that controls the opening and closing of the relay contact, a temperature sensing element that detects the temperature of the liquid in the container, and outputs an ON signal to the relay coil during boiling and outputs an ON signal to the relay coil during warming. and a control circuit that outputs an ignition signal to the thyristor so that if the temperature of the temperature sensing element is above a predetermined value, the thyristor is turned off, and if the temperature is below the predetermined value, the thyristor is repeatedly turned on and off at a predetermined ratio. Electric water heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63298667A JP2605843B2 (en) | 1988-11-25 | 1988-11-25 | Electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63298667A JP2605843B2 (en) | 1988-11-25 | 1988-11-25 | Electric water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02144019A true JPH02144019A (en) | 1990-06-01 |
| JP2605843B2 JP2605843B2 (en) | 1997-04-30 |
Family
ID=17862709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63298667A Expired - Fee Related JP2605843B2 (en) | 1988-11-25 | 1988-11-25 | Electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2605843B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56114019A (en) * | 1980-02-13 | 1981-09-08 | Matsushita Electric Ind Co Ltd | Temperature controlling circuit |
| JPS60142821A (en) * | 1983-12-29 | 1985-07-29 | タイガー魔法瓶株式会社 | Boiling type electric pot |
-
1988
- 1988-11-25 JP JP63298667A patent/JP2605843B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56114019A (en) * | 1980-02-13 | 1981-09-08 | Matsushita Electric Ind Co Ltd | Temperature controlling circuit |
| JPS60142821A (en) * | 1983-12-29 | 1985-07-29 | タイガー魔法瓶株式会社 | Boiling type electric pot |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2605843B2 (en) | 1997-04-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |