JPH05115371A - Electric kettle - Google Patents
Electric kettleInfo
- Publication number
- JPH05115371A JPH05115371A JP28110291A JP28110291A JPH05115371A JP H05115371 A JPH05115371 A JP H05115371A JP 28110291 A JP28110291 A JP 28110291A JP 28110291 A JP28110291 A JP 28110291A JP H05115371 A JPH05115371 A JP H05115371A
- Authority
- JP
- Japan
- Prior art keywords
- water
- temperature
- container
- power supply
- detection means
- 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]
【産業上の利用分野】本発明は、容器内に収容された水
を加熱、保温する電気湯沸かし器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric water heater for heating and retaining the water contained in a container.
【０００２】[0002]
【従来の技術】従来、この種の電気湯沸かし器には容器
内の水量を検知する方法として、特開平３−１４３４１
７号公報に示すように、２本の電極を水中に設けて水量
に連動させ、その電極間の静電容量の変化量を検知する
ものがあった。2. Description of the Related Art Conventionally, as a method for detecting the amount of water in a container, an electric water heater of this type has been disclosed in Japanese Patent Laid-Open No. 14341/1991.
As shown in Japanese Laid-Open Patent Publication No. 7, there is one in which two electrodes are provided in water and are interlocked with the amount of water to detect the amount of change in capacitance between the electrodes.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら上記従来
の構成では、水量を検知するために電極部材が必要であ
り、全体の構成が複雑であるためコストが高くなるとい
う欠点があった。However, the above-mentioned conventional structure has a drawback in that the electrode member is required to detect the amount of water, and the overall structure is complicated, resulting in high cost.
【０００４】本発明は上記従来の問題を解決するもの
で、水量を検知するための電極部材を必要とせず、簡単
な構成で容器内の水量を検知することができる電気湯沸
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 provides an electric water heater capable of detecting the amount of water in a container with a simple structure without requiring an electrode member for detecting the amount of water. To aim.
【０００５】[0005]
【課題を解決するための手段】本発明は上記目的を達成
するために、液体を収容する容器と、前記容器内の液体
を加熱する加熱手段と、この加熱手段に接続された電源
の電圧を検知する電源電源電圧検知手段と、前記液体の
温度を検知する温度検知手段と、この温度検知手段の出
力の温度上昇率を算出する温度上昇検知手段とを備え、
前記電源電圧検知手段と前記温度上昇検知手段の各出力
から前記容器内の液体量を算出する演算手段を設けた構
成を有している。To achieve the above object, the present invention provides a container for containing a liquid, a heating means for heating the liquid in the container, and a voltage of a power source connected to the heating means. Power supply voltage detection means for detecting, temperature detection means for detecting the temperature of the liquid, and temperature rise detection means for calculating the temperature rise rate of the output of the temperature detection means,
The power supply voltage detection means and the temperature rise detection means are provided with an arithmetic means for calculating the amount of liquid in the container from the respective outputs.
【０００６】[0006]
【作用】上記した構成において、電源電圧をパラメ−タ
として容器内の液体の温度上昇率を検知して液体容量を
算出する。In the above construction, the liquid capacity is calculated by detecting the temperature rise rate of the liquid in the container with the power supply voltage as a parameter.
【０００７】[0007]
【実施例】以下、本発明の一実施例について図１〜図３
を参照しながら説明する。図に示すように、電気湯沸か
し器本体１内に設けた容器２は上面に開口部を有し、蓋
３によって上面開口部は覆われている。容器２の下方に
は水を加熱するヒータ４と水温を検知する温度センサ−
５を備えている。容器２の下方の排出口６から電動ポン
プ７を介し給湯パイプ８に水路が形成され、外部導出口
９からお湯が排出される。モ−タ１０は電動ポンプ７を
駆動するものであり、操作つまみ１１を操作すると、そ
の信号によりモ−タ１０が動作し、外部導出口９から容
器２内のお湯が注がれる。また温度センサ−５の信号か
ら温度検知手段１２にて水温を検知し、その信号を温度
上昇検知手段１３に入力し単位時間の温度変化量(Δθ
／Δｔ)を測定することにより、容器２の内部の水の温
度上昇勾配を算出し演算手段１４に出力する。またヒー
タ４に供給する電源電圧（Ｖ）を検知する電源電圧検知
手段１５を設け、この出力も演算手段１４に出力され
る。演算手段１４は水量（Ｗ）＝Ｋ・［Ｖ2／{Ｒ・(Δθ
／Δｔ)}］の式に基づき算出し、その結果を液量表示手
段１６に出力し容器２内の水量を表示するものであり、
上記の式において、Ｒはヒータ４の抵抗値、Ｋは熱放散
等による係数を示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
Will be described with reference to. As shown in the figure, the container 2 provided in the electric water heater main body 1 has an opening on the upper surface, and the upper opening is covered by the lid 3. Below the container 2, a heater 4 for heating water and a temperature sensor for detecting the water temperature-
It is equipped with 5. A water channel is formed in the hot water supply pipe 8 from the discharge port 6 below the container 2 via the electric pump 7, and hot water is discharged from the external outlet 9. The motor 10 drives the electric pump 7, and when the operation knob 11 is operated, the motor 10 is operated by the signal and the hot water in the container 2 is poured from the external outlet 9. Further, the water temperature is detected by the temperature detecting means 12 from the signal of the temperature sensor-5, and the signal is inputted to the temperature rise detecting means 13 to input the temperature change amount (Δθ) per unit time.
By measuring / Δt), the temperature rise gradient of the water inside the container 2 is calculated and output to the calculation means 14. Further, a power supply voltage detection means 15 for detecting the power supply voltage (V) supplied to the heater 4 is provided, and this output is also output to the calculation means 14. The calculation means 14 calculates the amount of water (W) = K · [V 2 / {R · (Δθ
/ Δt)}], and outputs the result to the liquid amount display means 16 to display the water amount in the container 2.
In the above equation, R indicates the resistance value of the heater 4, and K indicates the coefficient due to heat dissipation or the like.
【０００８】図２は実施例の回路図を示すものである。
すなわち、温度センサ−５はサ−ミスタ１７と抵抗１８
との分圧電圧をマイクロコンピュ−タ１９に入力し内部
でＡ／Ｄ変換する。また電源電圧検知手段１５はコンパ
レ−タ２０の−端子に抵抗２１ａ、２１ｂの分圧電圧を
入力し、＋端子には抵抗２２ａ、２２ｂの接続点を接続
し、同接続点と電源２３の−端子間を抵抗２２ｃにて接
続している。２４ａ、２４ｂはクランプダイオ−ドであ
る。またマイクロコンピュ−タ１９の出力端子の一つは
リレ−２５に接続し、リレ−２５のスイッチ２６はヒー
タ４に接続され、他の出力端子は液量表示手段２７に接
続している。マイクロコンピュ−タ１９はＣＰＵ、ＲＯ
Ｍ、ＲＡＭおよび入出力部を有するワンチップマイクロ
コンピュ−タである。FIG. 2 shows a circuit diagram of the embodiment.
That is, the temperature sensor-5 includes a thermistor 17 and a resistor 18.
The divided voltage of and is input to the microcomputer 19 and A / D converted inside. The power supply voltage detecting means 15 inputs the divided voltage of the resistors 21a and 21b to the-terminal of the comparator 20, connects the connection point of the resistors 22a and 22b to the + terminal, and connects the connection point and the power supply 23-. The terminals are connected by a resistor 22c. Reference numerals 24a and 24b are clamp diodes. Further, one of the output terminals of the microcomputer 19 is connected to the relay 25, the switch 26 of the relay 25 is connected to the heater 4, and the other output terminal is connected to the liquid amount display means 27. Microcomputer 19 is CPU, RO
It is a one-chip microcomputer having M, RAM and an input / output unit.
【０００９】上記構成における動作を図３を用いて説明
する。（ａ）は電源２３の波形、（ｂ）はコンパレ−タ
１９の各入力端子電圧波形、（ｃ）はコンパレ−タ２０
の出力波形を示すもので、電源２３の電圧変動により
（ｂ）に示すコンパレ−タ１９の＋端子電圧波形の立ち
上がりおよび立ち下がりの勾配が変動し、（ｃ）に示す
時間ｔ0が変動する。電源２３の電圧が低下すると時間t
0は小さくなり、電圧が上昇すると時間t0は大きくな
る。このようにして電源電圧検知手段１５は電源２３の
電圧値に相当する時間t0の信号をマイクロコンピュ−タ
１９に入力する。そしてマイクロコンピュ−タ１９は温
度センサ−５からの分圧電圧からセンサ−温度を判断す
る温度検知手段１２と、温度検知手段１２で検知したセ
ンサ−温度の単位時間の温度変化量(Δθ／Δｔ)を算出
する温度上昇検知手段１３と、電源電圧検知手段１５の
出力である時間ｔ0を読み取り前記数式に示す演算を行
なう。そしてマイクロコンピュ−タ１９の出力はリレ−
２５を開閉させてヒ−タ−４の通電制御をする。また液
量表示手段１６に信号を出力して水量を表示する。The operation of the above configuration will be described with reference to FIG. (A) is a waveform of the power supply 23, (b) is a waveform of each input terminal voltage of the comparator 19, (c) is a comparator 20.
Of the output waveform of the power supply 23, the rising and falling slopes of the + terminal voltage waveform of the comparator 19 shown in (b) change due to the voltage change of the power supply 23, and the time t 0 shown in (c) changes. .. When the voltage of the power supply 23 drops, time t
0 becomes small, and time t 0 becomes large as the voltage rises. In this way, the power supply voltage detecting means 15 inputs the signal of the time t 0 corresponding to the voltage value of the power supply 23 to the microcomputer 19. The microcomputer 19 detects the temperature of the sensor based on the divided voltage from the temperature sensor 5, and the temperature change amount (Δθ / Δt) of the sensor temperature detected by the temperature detection unit 12 per unit time. ) Is calculated and the time t 0 which is the output of the power supply voltage detection means 15 is read, and the calculation shown in the above mathematical expression is performed. And the output of the microcomputer 19 is relayed.
25 is opened and closed to control the energization of the heater-4. Further, a signal is output to the liquid volume display means 16 to display the water volume.
【００１０】[0010]
【発明の効果】上記実施例から明らかなように本発明の
電気湯沸かし器は、液体を収容する容器と、前記容器内
の液体を加熱する加熱手段と、この加熱手段に接続され
た電源の電圧を検知する電源電圧検知手段と、前記液体
の温度を検知する温度検知手段と、この温度検知手段の
出力の温度上昇率を算出する温度上昇検知手段とを備
え、前記電源電圧検知手段と前記温度上昇検知手段の各
出力から前記容器内の液体量を算出する演算手段を設け
たものであり、この構成とすることにより、水量を検知
するための電極部材を必要とせず、簡単な構成で容器内
の水量を検知することができ、実用的価値は顕著であ
る。As is apparent from the above-described embodiments, the electric water heater of the present invention has a container for containing a liquid, a heating means for heating the liquid in the container, and a voltage of a power source connected to the heating means. The power supply voltage detection means, the temperature detection means for detecting the temperature of the liquid, and the temperature increase detection means for calculating the temperature increase rate of the output of the temperature detection means are provided. The calculation means for calculating the liquid amount in the container from each output of the detection means is provided. With this configuration, an electrode member for detecting the water amount is not required, and the inside of the container has a simple configuration. It is possible to detect the amount of water, and its practical value is remarkable.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の一実施例における電気湯沸かし器の構
成図FIG. 1 is a configuration diagram of an electric water heater according to an 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】（ａ）（ｂ）（ｃ）同電気湯沸かし器の回路波
形図FIG. 3 (a) (b) (c) Circuit waveform diagram of the electric water heater
２ 容器 ４ ヒータ（加熱手段） １２ 温度検知手段 １３ 温度上昇検知手段 １４ 演算手段 １５ 電源電圧検知手段 2 container 4 heater (heating means) 12 temperature detection means 13 temperature rise detection means 14 calculation means 15 power supply voltage detection means
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成４年１１月１６日[Submission date] November 16, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】請求項１[Name of item to be corrected] Claim 1
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】発明の詳細な説明[Name of item to be amended] Detailed explanation of the invention
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【発明の詳細な説明】Detailed Description of the Invention
【０００１】[0001]
【産業上の利用分野】本発明は、容器内に収容された水
を加熱、保温する電気湯沸かし器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric water heater for heating and retaining the water contained in a container.
【０００２】[0002]
【従来の技術】従来、この種の電気湯沸かし器には容器
内の水量を検知する方法として、特開平３−１４３４１
７号公報に示すように、２本の電極を水中に設けて水量
に連動させ、その電極間の静電容量の変化量を検知する
ものがあった。2. Description of the Related Art Conventionally, as a method for detecting the amount of water in a container, an electric water heater of this type has been disclosed in Japanese Patent Laid-Open No. 14341/1991.
As shown in Japanese Laid-Open Patent Publication No. 7, there is one in which two electrodes are provided in water and are interlocked with the amount of water to detect the amount of change in capacitance between the electrodes.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら上記従来
の構成では、水量を検知するために電極部材が必要であ
り、全体の構成が複雑であるためコストが高くなるとい
う欠点があった。However, the above-mentioned conventional structure has a drawback in that the electrode member is required to detect the amount of water, and the overall structure is complicated, resulting in high cost.
【０００４】本発明は上記従来の問題を解決するもの
で、水量を検知するための電極部材を必要とせず、簡単
な構成で容器内の水量を検知することができる電気湯沸
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 provides an electric water heater capable of detecting the amount of water in a container with a simple structure without requiring an electrode member for detecting the amount of water. To aim.
【０００５】[0005]
【課題を解決するための手段】本発明は上記目的を達成
するために、液体を収容する容器と、前記容器内の液体
を加熱する加熱手段と、この加熱手段に接続された電源
の電圧を検知する電源電源電圧検知手段と、前記液体の
温度を検知する温度検知手段と、この温度検知手段の出
力の温度上昇率を算出する温度上昇検知手段とを備え、
前記電源電圧検知手段と前記温度上昇検知手段の各出力
から前記容器内の液体量を算出する演算手段を設けた構
成を有している。To achieve the above object, the present invention provides a container for containing a liquid, a heating means for heating the liquid in the container, and a voltage of a power source connected to the heating means. Power supply voltage detection means for detecting, temperature detection means for detecting the temperature of the liquid, and temperature rise detection means for calculating the temperature rise rate of the output of the temperature detection means,
The power supply voltage detection means and the temperature rise detection means are provided with an arithmetic means for calculating the amount of liquid in the container from the respective outputs.
【０００６】[0006]
【作用】上記した構成において、電源電圧をパラメ−タ
として容器内の液体の温度上昇率を検知して液体容量を
算出する。In the above construction, the liquid capacity is calculated by detecting the temperature rise rate of the liquid in the container with the power supply voltage as a parameter.
【０００７】[0007]
【実施例】以下、本発明の一実施例について図１〜図３
を参照しながら説明する。図に示すように、電気湯沸か
し器本体１内に設けた容器２は上面に開口部を有し、蓋
３によって上面開口部は覆われている。容器２の下方に
は水を加熱するヒータ４と水温を検知する温度センサ−
５を備えている。容器２の下方の排出口６から電動ポン
プ７を介し給湯パイプ８に水路が形成され、外部導出口
９からお湯が排出される。モ−タ１０は電動ポンプ７を
駆動するものであり、操作つまみ１１を操作すると、そ
の信号によりモ−タ１０が動作し、外部導出口９から容
器２内のお湯が注がれる。また温度センサ−５の信号か
ら温度検知手段１２にて水温を検知し、その信号を温度
上昇検知手段１３に入力し単位時間の温度変化量(Δθ
／Δｔ)を測定することにより、容器２の内部の水の温
度上昇勾配を算出し演算手段１４に出力する。またヒー
タ４に供給する電源電圧（Ｖ）を検知する電源電圧検知
手段１５を設け、この出力も演算手段１４に出力され
る。演算手段１４は水量（Ｗ）＝Ｋ・［Ｖ2／{Ｒ・(Δθ
／Δｔ)}］の式に基づき算出し、その結果を液量表示手
段１６に出力し容器２内の水量を表示するものであり、
上記の式において、Ｒはヒータ４の抵抗値、Ｋは熱放散
等による係数を示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
Will be described with reference to. As shown in the figure, the container 2 provided in the electric water heater main body 1 has an opening on the upper surface, and the upper opening is covered by the lid 3. Below the container 2, a heater 4 for heating water and a temperature sensor for detecting the water temperature-
It is equipped with 5. A water channel is formed in the hot water supply pipe 8 from the discharge port 6 below the container 2 via the electric pump 7, and hot water is discharged from the external outlet 9. The motor 10 drives the electric pump 7, and when the operation knob 11 is operated, the motor 10 is operated by the signal and the hot water in the container 2 is poured from the external outlet 9. Further, the water temperature is detected by the temperature detecting means 12 from the signal of the temperature sensor-5, and the signal is inputted to the temperature rise detecting means 13 to input the temperature change amount (Δθ) per unit time.
By measuring / Δt), the temperature rise gradient of the water inside the container 2 is calculated and output to the calculation means 14. Further, a power supply voltage detection means 15 for detecting the power supply voltage (V) supplied to the heater 4 is provided, and this output is also output to the calculation means 14. The calculation means 14 calculates the amount of water (W) = K · [V 2 / {R · (Δθ
/ Δt)}], and outputs the result to the liquid amount display means 16 to display the water amount in the container 2.
In the above equation, R indicates the resistance value of the heater 4, and K indicates the coefficient due to heat dissipation or the like.
【０００８】図２は実施例の回路図を示すものである。
すなわち、温度センサ−５はサ−ミスタ１７と抵抗１８
との分圧電圧をマイクロコンピュ−タ１９に入力し内部
でＡ／Ｄ変換する。また電源電圧検知手段１５はコンパ
レ−タ２０の−端子に抵抗２１ａ、２１ｂの分圧電圧を
入力し、＋端子には抵抗２２ａ、２２ｂの接続点を接続
し、同接続点と電源２３の−端子間を抵抗２２ｃにて接
続している。２４ａ、２４ｂはクランプダイオ−ドであ
る。またマイクロコンピュ−タ１９の出力端子の一つは
リレ−２５に接続し、リレ−２５のスイッチ２６はヒー
タ４に接続され、他の出力端子は液量表示手段２７に接
続している。マイクロコンピュ−タ１９はＣＰＵ、ＲＯ
Ｍ、ＲＡＭおよび入出力部を有するワンチップマイクロ
コンピュ−タである。FIG. 2 shows a circuit diagram of the embodiment.
That is, the temperature sensor-5 includes a thermistor 17 and a resistor 18.
The divided voltage of and is input to the microcomputer 19 and A / D converted inside. The power supply voltage detecting means 15 inputs the divided voltage of the resistors 21a and 21b to the-terminal of the comparator 20, connects the connection point of the resistors 22a and 22b to the + terminal, and connects the connection point and the power supply 23-. The terminals are connected by a resistor 22c. Reference numerals 24a and 24b are clamp diodes. Further, one of the output terminals of the microcomputer 19 is connected to the relay 25, the switch 26 of the relay 25 is connected to the heater 4, and the other output terminal is connected to the liquid amount display means 27. Microcomputer 19 is CPU, RO
It is a one-chip microcomputer having M, RAM and an input / output unit.
【０００９】上記構成における動作を図３を用いて説明
する。（ａ）は電源２３の波形、（ｂ）はコンパレ−タ
１９の各入力端子電圧波形、（ｃ）はコンパレ−タ２０
の出力波形を示すもので、電源２３の電圧変動により
（ｂ）に示すコンパレ−タ１９の＋端子電圧波形の立ち
上がりおよび立ち下がりの勾配が変動し、（ｃ）に示す
時間ｔ0が変動する。電源２３の電圧が低下すると時間t
0は小さくなり、電圧が上昇すると時間t0は大きくな
る。このようにして電源電圧検知手段１５は電源２３の
電圧値に相当する時間t0の信号をマイクロコンピュ−タ
１９に入力する。そしてマイクロコンピュ−タ１９は温
度センサ−５からの分圧電圧からセンサ−温度を判断す
る温度検知手段１２と、温度検知手段１２で検知したセ
ンサ−温度の単位時間の温度変化量(Δθ／Δｔ)を算出
する温度上昇検知手段１３と、電源電圧検知手段１５の
出力である時間ｔ0を読み取り前記数式に示す演算を行
なう。そしてマイクロコンピュ−タ１９の出力はリレ−
２５を開閉させてヒ−タ−４の通電制御をする。また液
量表示手段１６に信号を出力して水量を表示する。The operation of the above configuration will be described with reference to FIG. (A) is a waveform of the power supply 23, (b) is a waveform of each input terminal voltage of the comparator 19, (c) is a comparator 20.
Of the output waveform of the power supply 23, the rising and falling slopes of the + terminal voltage waveform of the comparator 19 shown in (b) change due to the voltage change of the power supply 23, and the time t 0 shown in (c) changes. .. When the voltage of the power supply 23 drops, time t
0 becomes small, and time t 0 becomes large as the voltage rises. In this way, the power supply voltage detecting means 15 inputs the signal of the time t 0 corresponding to the voltage value of the power supply 23 to the microcomputer 19. The microcomputer 19 detects the temperature of the sensor based on the divided voltage from the temperature sensor 5, and the temperature change amount (Δθ / Δt) of the sensor temperature detected by the temperature detection unit 12 per unit time. ) Is calculated and the time t 0 which is the output of the power supply voltage detection means 15 is read, and the calculation shown in the above mathematical expression is performed. And the output of the microcomputer 19 is relayed.
25 is opened and closed to control the energization of the heater-4. Also, a signal is output to the liquid volume display means 16 to display the water volume.
【００１０】[0010]
【発明の効果】上記実施例から明らかなように本発明の
電気湯沸かし器は、液体を収容する容器と、前記容器内
の液体を加熱する加熱手段と、この加熱手段に接続され
た電源の電圧を検知する電源電圧検知手段と、前記液体
の温度を検知する温度検知手段と、この温度検知手段の
出力の温度上昇率を算出する温度上昇検知手段とを備
え、前記電源電圧検知手段と前記温度上昇検知手段の各
出力から前記容器内の液体量を算出する演算手段を設け
たものであり、この構成とすることにより、水量を検知
するための電極部材を必要とせず、簡単な構成で容器内
の水量を検知することができ、実用的価値は顕著であ
る。As is apparent from the above-described embodiments, the electric water heater of the present invention has a container for containing a liquid, a heating means for heating the liquid in the container, and a voltage of a power source connected to the heating means. The power supply voltage detection means, the temperature detection means for detecting the temperature of the liquid, and the temperature increase detection means for calculating the temperature increase rate of the output of the temperature detection means are provided. The calculation means for calculating the liquid amount in the container from each output of the detection means is provided. With this configuration, an electrode member for detecting the water amount is not required, and the inside of the container has a simple configuration. It is possible to detect the amount of water, and its practical value is remarkable.
Claims (1)
を加熱する加熱手段と、この加熱手段に接続された電源
の電圧を検知する電源電圧検知手段と、前記液体の温度
を検知する温度検知手段と、この温度検知手段の出力の
温度上昇率を算出する温度上昇検知手段とを備え、前記
電源電圧検知手段と前記温度上昇検知手段の各出力から
前記容器内の液体量を算出する演算手段を設けた電気湯
沸かし器。1. A container for containing a liquid, a heating means for heating the liquid in the container, a power supply voltage detecting means for detecting a voltage of a power supply connected to the heating means, and a temperature of the liquid. The temperature detection means and the temperature rise detection means for calculating the temperature rise rate of the output of the temperature detection means are provided, and the liquid amount in the container is calculated from the respective outputs of the power supply voltage detection means and the temperature rise detection means. An electric water heater equipped with arithmetic means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28110291A JPH05115371A (en) | 1991-10-28 | 1991-10-28 | Electric kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28110291A JPH05115371A (en) | 1991-10-28 | 1991-10-28 | Electric kettle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05115371A true JPH05115371A (en) | 1993-05-14 |
Family
ID=17634378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28110291A Pending JPH05115371A (en) | 1991-10-28 | 1991-10-28 | Electric kettle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05115371A (en) |
-
1991
- 1991-10-28 JP JP28110291A patent/JPH05115371A/en active Pending
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