JP2003088468A - Electric water heater - Google Patents
Electric water heaterInfo
- Publication number
- JP2003088468A JP2003088468A JP2001286839A JP2001286839A JP2003088468A JP 2003088468 A JP2003088468 A JP 2003088468A JP 2001286839 A JP2001286839 A JP 2001286839A JP 2001286839 A JP2001286839 A JP 2001286839A JP 2003088468 A JP2003088468 A JP 2003088468A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- container
- liquid
- boiling
- water
- 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.)
- Pending
Links
Landscapes
- Cookers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、家庭内で使用され
る容器内に収容された液体を加熱・保温する電気湯沸か
し器の再沸騰湯沸かしに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reboiler for an electric water heater that heats and keeps a liquid contained in a container used at home.
【０００２】[0002]
【従来の技術】従来、この種の電気湯沸かし器は例えば
特開平０９−２９９２３９のようになっていた。すなわ
ち、沸騰検知手段は容器内の液体温度を検知する温度検
知手段の温度上昇により水量を検知し、温度上昇勾配が
この水量に応じて所定値以下を検出すると加熱を停止す
ることにより沸騰検知を行っていた。2. Description of the Related Art Conventionally, an electric water heater of this type has been disclosed in, for example, Japanese Patent Laid-Open No. 09-299239. That is, the boiling detection means detects the amount of water by the temperature rise of the temperature detection means for detecting the liquid temperature in the container, and when the temperature rise gradient detects a predetermined value or less according to this amount of water, the boiling detection is stopped by stopping the heating. I was going.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、前記従
来の電気湯沸かし器では温度検知手段の温度上昇により
水量を検知するため、容器内の液体が高温状態からの再
沸騰湯沸かしを行った場合には液体温度が沸騰温度に近
くなるのでの温度上昇が小さくなる。このため、容器内
が少水量の場合であっても温度上昇が小さいので水量を
多水量と誤判定し、結果的に沸騰時間を長くなり消費電
力、蒸気量が多くなってしまうという問題を有してい
た。However, in the above-mentioned conventional electric water heater, since the amount of water is detected by the temperature rise of the temperature detecting means, when the liquid in the container is reboiled from the high temperature state, the liquid temperature is changed. Is close to the boiling temperature, so the temperature rise is small. For this reason, even if the amount of water in the container is small, the temperature rise is small, so the amount of water is erroneously determined to be a large amount of water, and as a result, the boiling time becomes longer and the power consumption and the amount of steam increase. Was.
【０００４】本発明は前記従来の課題を解決するもの
で、容器内の水量、液体温度に応じて適切な沸騰時間で
再沸騰湯沸かしができる電気湯沸かし器を提供すること
を目的とする。The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide an electric water heater capable of re-boiling in an appropriate boiling time according to the amount of water in the container and the liquid temperature.
【０００５】[0005]
【課題を解決するための手段】前記従来の課題を解決す
るために、本発明の電気湯沸かし器は液体を収容する容
器と、前記容器内の液体を加熱または保温する加熱手段
と、前記容器内の液体温度を検知する温度検知手段と、
前記容器内で高温状態の液体を再加熱させる再加熱手段
と、前記温度検知手段の検知に基づいて容器内の液体の
温度が所定温度区間を経過する時間を計測して容器内の
水量を測定する水量検知手段と、前記水量検知手段から
得られた水量に応じて所定の温度上昇勾配により前記容
器内の液体が沸騰したことを検出する第１の沸騰検知手
段と、前記温度検知手段から得られた温度に応じて所定
の温度上昇勾配により前記容器内の液体が沸騰したこと
を検出する第２の沸騰検知手段とを備え、電源投入後ま
たは再加熱開始から所定時間通電後の液体の温度により
前記第１、第２の沸騰検知手段を切り換えるようにした
のもである。In order to solve the above-mentioned conventional problems, the electric water heater of the present invention is a container for containing a liquid, a heating means for heating or retaining the liquid in the container, and Temperature detection means for detecting the liquid temperature,
Reheating means for reheating the liquid in a high temperature state in the container, and measuring the amount of water in the container by measuring the time for which the temperature of the liquid in the container passes through a predetermined temperature zone based on the detection of the temperature detecting means. And a first boiling detection means for detecting that the liquid in the container has boiled by a predetermined temperature rising gradient according to the water quantity obtained from the water quantity detection means, and the water detection means A second boiling detection means for detecting that the liquid in the container has boiled according to a predetermined temperature rising gradient according to the temperature, and the temperature of the liquid after the power is turned on or a predetermined time has passed from the start of reheating. Thus, the first and second boiling detection means are switched.
【０００６】これにより、容器内の液体が高温状態から
の再沸騰湯沸かしを行った場合において容器内の水量、
液体温度に応じて適切な沸騰時間で湯沸かしができる。As a result, the amount of water in the container when the liquid in the container is reboiled from a high temperature,
Water can be boiled for a suitable boiling time depending on the liquid temperature.
【０００７】[0007]
【発明の実施の形態】請求項１に記載した発明は、液体
を収容する容器と、前記容器内の液体を加熱または保温
する加熱手段と、前記容器内の液体温度を検知する温度
検知手段と、前記容器内で高温状態の液体を再加熱させ
る再加熱手段と、前記温度検知手段の検知に基づいて容
器内の液体の温度が所定温度区間を経過する時間を計測
して容器内の水量を測定する水量検知手段と、前記水量
検知手段から得られた水量に応じて所定の温度上昇勾配
により前記容器内の液体が沸騰したことを検出する第１
の沸騰検知手段と、前記温度検知手段から得られた温度
に応じて所定の温度上昇勾配により前記容器内の液体が
沸騰したことを検出する第２の沸騰検知手段とを備え、
電源投入後または再加熱開始から所定時間通電後の液体
の温度により前記第１、第２の沸騰検知手段を切り換え
ることにより、容器内の液体が高温状態からの再沸騰湯
沸かしを行った場合において容器内の水量、液体温度に
応じて適切な沸騰時間で湯沸かしができる。BEST MODE FOR CARRYING OUT THE INVENTION The invention described in claim 1 includes a container for containing a liquid, a heating means for heating or keeping the temperature of the liquid in the container, and a temperature detecting means for detecting the temperature of the liquid in the container. The reheating means for reheating the liquid in a high temperature state in the container, and the time of the temperature of the liquid in the container passing through a predetermined temperature section based on the detection of the temperature detecting means to measure the amount of water in the container. A first water amount detecting means for measuring and a first water temperature detecting means for detecting that the liquid in the container has boiled with a predetermined temperature rise gradient according to the water amount obtained from the first water amount detecting means.
Boil detection means, and a second boiling detection means for detecting that the liquid in the container has boiled by a predetermined temperature rise gradient according to the temperature obtained from the temperature detection means,
By switching between the first and second boiling detection means according to the temperature of the liquid after the power is turned on or a predetermined time has passed since the start of reheating, the container in the case where the liquid in the container is reboiled from a high temperature state Water can be boiled for a suitable boiling time depending on the amount of water in the liquid and the liquid temperature.
【０００８】請求項２に記載した発明は、前記第１の沸
騰検知手段が前記水量検知手段から得られた水量に応じ
て所定時間経過後に加熱を終了し、前記容器内の液体が
沸騰したことを検出することにより、容器内の液体が高
温状態からの再沸騰湯沸かしを行った場合において容器
内の水量、液体温度に応じて適切な沸騰時間で湯沸かし
ができる。According to a second aspect of the present invention, the first boiling detection means finishes heating after a predetermined time has elapsed according to the amount of water obtained from the water amount detection means, and the liquid in the container boils. By detecting the above, when the liquid in the container is reboiled and heated from a high temperature state, it is possible to boil water in an appropriate boiling time according to the amount of water in the container and the liquid temperature.
【０００９】請求項３に記載した発明は、前記第２の沸
騰検知手段が前記温度検知手段から得られた温度に応じ
て所定時間経過後に加熱を終了し、前記容器内の液体が
沸騰したことを検出することにより、容器内の液体が高
温状態からの再沸騰湯沸かしを行った場合において容器
内の水量、液体温度に応じて適切な沸騰時間で湯沸かし
ができる。According to a third aspect of the present invention, the second boiling detection means finishes heating after a predetermined time has elapsed according to the temperature obtained from the temperature detection means, and the liquid in the container boils. By detecting the above, when the liquid in the container is reboiled and heated from a high temperature state, it is possible to boil water in an appropriate boiling time according to the amount of water in the container and the liquid temperature.
【００１０】[0010]
【実施例】以下、本発明の実施例について図面を用いて
説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１１】（実施例１）図１は本発明の実施例１にお
ける電気湯沸かし器のブロック図である。図１におい
て、１は液体を収容する容器、２は容器１に当接し、容
器内の液体を加熱する第１の加熱手段と同様に容器内の
液体を加熱・保温する第１の加熱手段よりもワット出力
の小さな第２の加熱手段を示している。(Embodiment 1) FIG. 1 is a block diagram of an electric water heater according to Embodiment 1 of the present invention. In FIG. 1, 1 is a container for containing a liquid, 2 is a container for abutting against the container 1, and 1st heating means for heating and keeping the liquid in the container similar to the 1st heating means for heating the liquid in the container. Also shows a second heating means with a small wattage output.
【００１２】３は容器１に当接され、容器内の液体の温
度を検知する温度検知手段、４は前記温度検知手段の検
知に基づいて容器内の液体の温度が所定温度区間を経過
する時間を計測して容器内の水量を測定する水量検知手
段である。Reference numeral 3 denotes a temperature detecting means which is in contact with the container 1 and detects the temperature of the liquid in the container. Is a water amount detecting means for measuring the amount of water in the container.
【００１３】５は第１の沸騰検知手段、６は制御手段で
あり、制御手段６は前記温度検知手段３が保温境界温度
（本実施例では約90℃とする）未満を検知すると前記加
熱手段２を駆動し、その後第１の沸騰検知手段５によっ
て前記水量検知手段４から得られた水量に応じて所定の
温度上昇勾配よりも勾配が緩やかになったことを検知す
ると前記加熱手段２を停止させるように構成されてい
る。Reference numeral 5 is a first boiling detection means, 6 is a control means, and the control means 6 is the heating means when the temperature detection means 3 detects a temperature lower than the heat retention boundary temperature (about 90 ° C. in this embodiment). 2 is driven, and then the first boiling detection means 5 stops the heating means 2 when it detects that the gradient becomes gentler than a predetermined temperature increase gradient in accordance with the water volume obtained from the water volume detection means 4. Is configured to let.
【００１４】７は第２の沸騰検知手段、８は高温状態の
液体を強制的に再加熱させる再加熱手段であり、前記制
御手段６は前記加熱手段２を駆動し、前記温度検知手段
３が再加熱開始から第１の所定時間（本実施例では約２
０秒とする）通電後の第１の所定温度（本実施例では約
9２℃とする）以上をを検知すると、第２の沸騰検知手
段７によって前記温度検知手段３の検知温度より温度上
昇勾配を検知して前記加熱手段２を制御するように構成
されている。Reference numeral 7 is a second boiling detection means, 8 is a reheating means for forcibly reheating a liquid in a high temperature state, the control means 6 drives the heating means 2, and the temperature detection means 3 is The first predetermined time from the start of reheating (about 2 in this embodiment)
The first predetermined temperature (approx.
When the temperature is higher than 92 ° C.), the second boiling detection means 7 detects the temperature rise gradient from the temperature detected by the temperature detection means 3 and controls the heating means 2.
【００１５】１０は出湯手段で、容器１の底部からの外
部まで液体を送り出す導水路１０hとこの導水路中に構
成され液体を外部まで送り出すポンプ１０i から構成さ
れている。Reference numeral 10 denotes a hot water outlet means, which comprises a water conduit 10h for sending the liquid from the bottom of the container 1 to the outside, and a pump 10i arranged in the water conduit for sending the liquid to the outside.
【００１６】図２は本発明の実施例１における電気湯沸
かし器の回路図である。図２において、１１は交流電
源、１２は直流電源である。前記第１の加熱手段および
第２の加熱手段を構成する加熱手段２は、容器内の液体
を加熱する第１の発熱体2aと、第１の発熱体2aよりも加
熱電力が小さく容器内の液体を加熱保温する第２の発熱
体2bと、これに交流電源１１と直列に接続されたリレー
接点2c，2dと、このリレー接点2c，2dの制御を行なうリ
レーコイル2e，2fで構成され、このリレーコイルに電流
を流し、前記リレー接点を閉じるようになっている。FIG. 2 is a circuit diagram of the electric water heater according to the first embodiment of the present invention. In FIG. 2, 11 is an AC power supply and 12 is a DC power supply. The heating means 2 constituting the first heating means and the second heating means includes a first heating element 2a for heating the liquid in the container and a heating power smaller than that of the first heating element 2a. It is composed of a second heating element 2b that heats and heats the liquid, relay contacts 2c and 2d connected in series with the AC power source 11, and relay coils 2e and 2f that control the relay contacts 2c and 2d. An electric current is passed through the relay coil to close the relay contact.
【００１７】温度検知手段３は、温度を抵抗値に変換す
る感温素子3aと、この感温素子3aと抵抗3bとで分圧電圧
値をつくり、これを２進符号に変換するAD変換器3cに入
力される。AD変換器3cは約30〜120 ℃の範囲を単位温度
幅（本実施例では約0.5 ℃）の温度刻みにし、この単位
温度上昇するごとの信号を出力している。The temperature detecting means 3 is an AD converter for producing a divided voltage value by the temperature sensitive element 3a for converting the temperature into a resistance value and the temperature sensitive element 3a and the resistor 3b, and converting this into a binary code. Entered in 3c. The AD converter 3c has a temperature range of about 30 to 120 ° C. in increments of a unit temperature width (about 0.5 ° C. in this embodiment), and outputs a signal every time the unit temperature rises.
【００１８】再加熱手段８は、保温中の液体を強制的に
再加熱するための入力でスイッチ８a，抵抗８b，８cで
構成される。The reheating means 8 is an input for forcibly reheating the liquid being kept warm, and comprises a switch 8a and resistors 8b and 8c.
【００１９】14は報知手段であり、ブザー１４a によっ
て沸騰終了などを報知したり、ＬＥＤ１４b ，１４c に
よって湯沸かし中や保温中を表示してやるものである。Reference numeral 14 is a notifying means for notifying the end of boiling by the buzzer 14a and displaying the fact that the water is being heated or kept warm by the LEDs 14b, 14c.
【００２０】前記出湯手段１０は、容器内の液体を外部
に送り出す電動ポンプ１０i を駆動させるモーター１０
a とこのモーター１０a と直列に接続された出湯SW１０
b 、トランジスタ１０c およびこのトランジスタ１０c
をオン状態にする信号を出力するロック解除SW１０e か
ら構成されており、ロック解除SW１０e をオンしてトラ
ンジスタ１０c をオンした後に出湯SW１０b をオンする
と出湯を行う。そして、出湯終了から一定時間（本実施
例では10秒とする）次の出湯が行われなければ前記トラ
ンジスタ１０c は再びオフ状態となり出湯SW１０b をオ
ンするだけでは出湯できないようになっている。The tapping means 10 is a motor 10 for driving an electric pump 10i for sending the liquid in the container to the outside.
SW 10 which is connected in series with a and this motor 10a
b, transistor 10c and this transistor 10c
It is composed of a lock release switch 10e for outputting a signal for turning on the switch, and when the lock release switch 10e is turned on to turn on the transistor 10c, the hot water output switch 10b is turned on to release the hot water. If the next hot spring is not performed for a certain period of time (10 seconds in this embodiment) from the end of the hot spring, the transistor 10c is turned off again and the hot spring SW10b cannot be turned on.
【００２１】１３はマイクロコンピュータ（以後マイコ
ンと略する）でプログラムを実行することで前記第１の
沸騰検知手段５、前記沸騰検知手段７および前記制御手
段６の動作を実現している。Reference numeral 13 realizes the operations of the first boiling detection means 5, the boiling detection means 7 and the control means 6 by executing a program by a microcomputer (hereinafter abbreviated as a microcomputer).
【００２２】図３及び図４は本発明の実施例１における
電気湯沸かし器のマイクロコンピュータ１３に記憶され
たプログラムの再沸騰湯沸かし制御部分のフローチャー
トを示したもので、これにより動作を説明する。FIG. 3 and FIG. 4 are flowcharts of the re-boiling water heating control part of the program stored in the microcomputer 13 of the electric water heater according to the first embodiment of the present invention, and the operation will be described below.
【００２３】電気湯沸かし器に電源が投入されると、ま
ず１００で前記保温境界温度以上であるか未満であるか
を前記温度検知手段３の値より判断する。一般的には前
記容器内１には水を入れて沸し始める所からスタートす
るが、前記保温境界温度以上で通電された時には再沸騰
湯沸かし制御を終了し保温中の動作に移行する。When the electric water heater is turned on, first, at 100, it is judged from the value of the temperature detecting means 3 whether the temperature is equal to or higher than the heat retention boundary temperature or lower. Generally, it starts from the place where water is put into the container 1 and starts to boil, but when energized at the temperature above the heat retention boundary temperature, the reboil water boiling control is ended and the operation moves to heat retention.
【００２４】１００で保温境界温度未満の場合は、１０
１で前記第１の発熱体2aを駆動して湯沸しを開始すると
同時に前記報知手段１４のＬＥＤ表示を湯沸し中の表示
を行わせるようにする。When the temperature is 100 and is lower than the heat retention boundary temperature, 10
In step 1, the first heating element 2a is driven to start boiling water, and at the same time, the LED display of the notification means 14 is set to display boiling water.
【００２５】次に、１０２にて第１の所定時間経過する
のを待って、１０３で前記温度検知手段３の検知温度
（ＴＨ１）を入力し、１０４でこの検知温度（ＴＨ１）
が第１の所定温度以上かどうかを判定する。このとき、
第１の所定温度以上ならば１０５の前記第１の沸騰検知
手段５により第１の沸騰検知を行い、第１の所定温度未
満なら１０６の第２の沸騰検知を行う。Next, after waiting for the first predetermined time to elapse at 102, the detected temperature (TH1) of the temperature detecting means 3 is input at 103, and the detected temperature (TH1) is obtained at 104.
Is equal to or higher than the first predetermined temperature. At this time,
When the temperature is equal to or higher than the first predetermined temperature, the first boiling detection means 5 105 detects the first boiling, and when the temperature is lower than the first predetermined temperature 106, the second boiling detection 106 is performed.
【００２６】そして、１０７で前記第１の発熱体2aを停
止させ、前記報知手段１４のブザー１４a により沸騰し
たことを報知し、さらにＬＥＤの表示を保温中の表示に
切り替え再沸騰湯沸かしの動作を終了し保温中の動作に
移行する。Then, at 107, the first heating element 2a is stopped, the buzzer 14a of the notifying means 14 is notified that boiling has occurred, and the LED display is switched to the display for keeping warm so as to perform the re-boiling operation. It ends and shifts to the operation during heat retention.
【００２７】次に図４を用いて前記第１の沸騰検知と前
記第２の沸騰検知の動作について説明する。前記第１の
沸騰検知は、１１０で前記温度検知手段３の検知温度が
所定温度区間を経過する時間を計測し、１１１でこの時
間より容器内の水量に応じた所定の温度上昇勾配（Ｔ
ｓ）を決定する。１１２で所定温度上昇する時間（ｄ
Ｔ）を測定し、１１３で前記温度上昇勾配（Ｔｓ）と比
較する。そして、ｄＴがＴｓ未満なら１１２へ戻り、ｄ
ＴがＴｓ以上なら１１４で沸騰検知する。Next, the operations of the first boiling detection and the second boiling detection will be described with reference to FIG. In the first boiling detection, at 110, the time when the temperature detected by the temperature detecting means 3 passes a predetermined temperature section is measured, and at 111, a predetermined temperature increase gradient (T) corresponding to the amount of water in the container is calculated from this time.
s) is determined. The time for which the predetermined temperature rises at 112 (d
T) is measured and compared at 113 to the temperature rise gradient (Ts). If dT is less than Ts, the process returns to 112, and d
If T is Ts or more, boiling is detected at 114.
【００２８】前記第２の沸騰検知は、１２０で前記温度
検知手段３の検知温度が所定温度上昇する時間（ｄＴ）
を測定し、１２１で容器内の液体が高温状態からの再沸
騰湯沸かしを行った時に適切な沸騰時間となる所定の温
度上昇勾配（Ｔｃ）と比較する。そして、ｄＴがＴｃ未
満なら１２０へ戻り、ｄＴがＴｃ以上なら１２２で沸騰
検知する。In the second boiling detection, at 120, a time (dT) during which the temperature detected by the temperature detecting means 3 rises by a predetermined temperature.
Is measured and compared with a predetermined temperature rise gradient (Tc), which is an appropriate boiling time when the liquid in the container is reboiled from the high temperature state at 121. Then, if dT is less than Tc, the process returns to 120, and if dT is Tc or more, boiling is detected at 122.
【００２９】なお、本実施例では、湯沸しを第１の発熱
体2aのみで行うように制御しているが第２の発熱体2bも
併用して湯沸しさせる構成も可能である。In the present embodiment, the boiling is controlled only by the first heating element 2a, but it is also possible to use the second heating element 2b in combination for boiling.
【００３０】なお、本実施例では、所定温度、所定温度
区間および所定時間という表現を用いているが、これは
これらの値が貯湯容器の容量、形状、ヒータ出力などの
設計上の要因によって異なるものであり、機種ごとに求
める必要があるからである。
（実施例２）以下、本発明の実施例２について説明す
る。、本実施例と実施例１との基本構成はほぼ同じなの
で説明は省略し、異なる点を中心に説明する。また、実
施例１と同じ構成要素には、同じ符号を付しその説明は
省略する。In the present embodiment, the expressions "predetermined temperature, predetermined temperature section and predetermined time" are used, but these values differ depending on design factors such as the capacity, shape and heater output of the hot water storage container. This is because it is necessary to ask for each model. (Second Embodiment) A second embodiment of the present invention will be described below. Since the basic configurations of the present embodiment and the first embodiment are substantially the same, description thereof will be omitted, and different points will be mainly described. Further, the same components as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.
【００３１】本実施例と実施例１との相違点は、前記第
１の沸騰検知手段５で実施例１が前記水量検知手段４か
ら得られた水量に応じて所定の温度上昇勾配により前記
容器内の液体が沸騰したことを検出するのに対して、本
実施例では前記水量検知手段４から得られた水量に応じ
て所定時間経過後に沸騰したことを検出した点である。The difference between this embodiment and the first embodiment is that in the first boiling detection means 5, the first boiling detection means 5 has a predetermined temperature rise gradient according to the water quantity obtained from the water quantity detection means 4 in the container. In contrast to the fact that the liquid in the inside is detected to boil, in the present embodiment, it is detected that the liquid has boiled after a lapse of a predetermined time according to the amount of water obtained from the water amount detecting means 4.
【００３２】以下、図５を用いて前記第１の沸騰検知の
動作について説明する。前記第１の沸騰検知は、２１０
で前記温度検知手段３の検知温度が所定温度区間を経過
する時間を計測し、２１１でこの時間より容器内の水量
に応じた所定時間（ｔｓ）を決定する。２１２で所定時
間（ｔｓ）を経過するのを待ち、所定時間が経過すると
２１３で沸騰検知する。
（実施例３）以下、本発明の実施例３について説明す
る。、本実施例と実施例１との基本構成はほぼ同じなの
で説明は省略し、異なる点を中心に説明する。また、実
施例１と同じ構成要素には、同じ符号を付しその説明は
省略する。The operation of the first boiling detection will be described below with reference to FIG. The first boiling detection is 210
At, the time when the temperature detected by the temperature detecting means 3 passes through a predetermined temperature section is measured, and at 211, a predetermined time (ts) corresponding to the amount of water in the container is determined from this time. At 212, the process waits until a predetermined time (ts) elapses, and when the predetermined time elapses, boiling detection is performed at 213. (Third Embodiment) A third embodiment of the present invention will be described below. Since the basic configurations of the present embodiment and the first embodiment are substantially the same, description thereof will be omitted, and different points will be mainly described. Further, the same components as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.
【００３３】本実施例と実施例１との相違点は、前記第
２の沸騰検知手段７で実施例１が前記温度検知手段３の
検知温度が所定温度上昇勾配により前記容器内の液体が
沸騰したことを検出するのに対して、本実施例では所定
時間を経過するのを待ち、所定時間経過後に沸騰したこ
とを検出した点である。The difference between this embodiment and the first embodiment is that in the second boiling detection means 7, the liquid in the container boils due to the temperature rising gradient of the temperature detected by the temperature detection means 3 in the first embodiment. In contrast to the detection of this, in the present embodiment, it waits for a predetermined time to elapse, and after the predetermined time elapses, it is detected that boiling has occurred.
【００３４】以下、図６を用いて前記第２の沸騰検知の
動作について説明する。前記第２の沸騰検知は、３２０
であらかじめ容器内の液体が高温状態からの再沸騰湯沸
かしを行った時に適切な沸騰時間となる所定時間（ｔ
ｃ）を設定する。３２１で所定時間（ｔｃ）を経過する
のを待ち、所定時間が経過すると３２２で沸騰検知す
る。The operation of the second boiling detection will be described below with reference to FIG. The second boiling detection is 320
When the liquid in the container is reboiled from a high temperature in advance, the appropriate boiling time (t) is reached.
c) is set. Waiting for a predetermined time (tc) to elapse at 321, and boiling detection is performed at 322 when the predetermined time elapses.
【００３５】[0035]
【発明の効果】以上のように、請求項１ないし３に記載
の発明によれば、容器内の液体が高温状態からの再沸騰
湯沸かしを行った場合において容器内の水量、液体温度
に応じて適切な沸騰時間で湯沸かしができる。As described above, according to the invention described in claims 1 to 3, when the liquid in the container is subjected to re-boiling from a high temperature state, the amount of water in the container and the liquid temperature are changed. You can boil water with an appropriate boiling time.
【図１】本発明の実施例１における電気湯沸かし器のブ
ロック図FIG. 1 is a block diagram of an electric water heater according to a first embodiment of the present invention.
【図２】同電気湯沸かし器の回路図FIG. 2 is a circuit diagram of the electric water heater.
【図３】同電気湯沸かし器の動作を示すフローチャートFIG. 3 is a flowchart showing the operation of the electric water heater.
【図４】同電気湯沸かし器の動作を示すフローチャートFIG. 4 is a flowchart showing the operation of the electric water heater.
【図５】本発明の実施例２における電気湯沸かし器の動
作を示すフローチャートFIG. 5 is a flowchart showing the operation of the electric water heater according to the second embodiment of the present invention.
【図６】本発明の実施例３における電気湯沸かし器の動
作を示すフローチャートFIG. 6 is a flowchart showing the operation of the electric water heater according to the third embodiment of the present invention.
１ 容器 ２ 加熱手段 ３ 温度検出手段 ４ 水量判定手段 ５ 第１の沸騰検知手段 ６ 制御手段 ７ 第２の沸騰検知手段 1 container 2 heating means 3 Temperature detection means 4 Water amount determination means 5 First boiling detection means 6 Control means 7 Second boiling detection means
Claims (3)
体を加熱または保温する加熱手段と、前記容器内の液体
温度を検知する温度検知手段と、前記容器内で高温状態
の液体を再加熱させる再加熱手段と、前記温度検知手段
の検知に基づいて容器内の液体の温度が所定温度区間を
経過する時間を計測して容器内の水量を測定する水量検
知手段と、前記水量検知手段から得られた水量に応じて
所定の温度上昇勾配により前記容器内の液体が沸騰した
ことを検出する第１の沸騰検知手段と、前記温度検知手
段から得られた温度に応じて所定の温度上昇勾配により
前記容器内の液体が沸騰したことを検出する第２の沸騰
検知手段とを備え、電源投入後または再加熱開始から所
定時間通電後の液体の温度により前記第１、第２の沸騰
検知手段を切り換えることを特徴とする電気湯沸かし
器。1. A container for containing a liquid, a heating means for heating or retaining the temperature of the liquid in the container, a temperature detecting means for detecting the temperature of the liquid in the container, and a liquid in a high temperature state in the container Reheating means for heating, a water amount detecting means for measuring the amount of water in the container by measuring the time for which the temperature of the liquid in the container passes a predetermined temperature section based on the detection of the temperature detecting means, and the water amount detecting means A first boiling detection means for detecting that the liquid in the container has boiled by a predetermined temperature rise gradient according to the amount of water obtained from, and a predetermined temperature rise according to the temperature obtained from the temperature detection means A second boiling detection means for detecting that the liquid in the container has boiled due to a gradient, and the first and second boiling detections based on the temperature of the liquid after the power is turned on or a predetermined time has passed from the start of reheating. Switch means An electric water heater characterized in that
手段から得られた水量に応じて所定時間経過後に加熱を
終了し、前記容器内の液体が沸騰したことを検出するこ
とを特徴とする請求項１に記載の電気湯沸かし器。2. The first boiling detecting means ends heating after a lapse of a predetermined time according to the amount of water obtained from the water amount detecting means, and detects that the liquid in the container has boiled. The electric water heater according to claim 1.
手段から得られた温度に応じて所定時間経過後に加熱を
終了し、前記容器内の液体が沸騰したことを検出するこ
とを特徴とする請求項１に記載の電気湯沸かし器。3. The second boiling detecting means ends heating after a lapse of a predetermined time according to the temperature obtained from the temperature detecting means, and detects that the liquid in the container has boiled. The electric water heater according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001286839A JP2003088468A (en) | 2001-09-20 | 2001-09-20 | Electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001286839A JP2003088468A (en) | 2001-09-20 | 2001-09-20 | Electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003088468A true JP2003088468A (en) | 2003-03-25 |
Family
ID=19109746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001286839A Pending JP2003088468A (en) | 2001-09-20 | 2001-09-20 | Electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003088468A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010172368A (en) * | 2009-01-27 | 2010-08-12 | Fuji Electric Retail Systems Co Ltd | Hot water heater |
| CN111012174A (en) * | 2020-01-08 | 2020-04-17 | 韦星 | Water level detection and heating control system, water level detection and heating control method and electric kettle |
| CN113475945A (en) * | 2021-08-19 | 2021-10-08 | 珠海格力电器股份有限公司 | Cooking control method and device of cooking appliance, storage medium and cooking appliance |
-
2001
- 2001-09-20 JP JP2001286839A patent/JP2003088468A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010172368A (en) * | 2009-01-27 | 2010-08-12 | Fuji Electric Retail Systems Co Ltd | Hot water heater |
| CN111012174A (en) * | 2020-01-08 | 2020-04-17 | 韦星 | Water level detection and heating control system, water level detection and heating control method and electric kettle |
| CN113475945A (en) * | 2021-08-19 | 2021-10-08 | 珠海格力电器股份有限公司 | Cooking control method and device of cooking appliance, storage medium and cooking appliance |
| CN113475945B (en) * | 2021-08-19 | 2022-06-17 | 珠海格力电器股份有限公司 | Cooking control method and device of cooking appliance, storage medium and cooking appliance |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2003088468A (en) | Electric water heater | |
| JP3633575B2 (en) | Electric water heater | |
| JP2001252193A (en) | Electric water heater | |
| JP3578090B2 (en) | Electric water heater | |
| JP3166688B2 (en) | Electric water heater | |
| JP3171135B2 (en) | Electric water heater | |
| JP3148913B2 (en) | Electric water heater | |
| JP3180732B2 (en) | Electric water heater | |
| JPH03191929A (en) | Electric water boiler | |
| JP3656621B2 (en) | Electric water heater | |
| JPH03295510A (en) | Electric water heater | |
| JPH0698826A (en) | Electric water boiler | |
| JPH0349719A (en) | Rice cooker | |
| JP3227962B2 (en) | Electric water heater | |
| JPH10314030A (en) | Electric water-heater | |
| JPH08107824A (en) | Electric kettle | |
| JP3109282B2 (en) | Electric water heater | |
| JP3297587B2 (en) | Electric water heater | |
| JP2987952B2 (en) | Electric water heater | |
| JPH03928Y2 (en) | ||
| JPH01105496A (en) | Heated cooking utensil | |
| JPH0928569A (en) | Electric eater boiler | |
| JPH0937944A (en) | Electric water heater | |
| JPS62238942A (en) | Method of controlling electric pot | |
| JPH0440591Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20040202 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040217 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20041102 |