JP2004129842A - Electric pot - Google Patents

Electric pot Download PDF

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Publication number
JP2004129842A
JP2004129842A JP2002297312A JP2002297312A JP2004129842A JP 2004129842 A JP2004129842 A JP 2004129842A JP 2002297312 A JP2002297312 A JP 2002297312A JP 2002297312 A JP2002297312 A JP 2002297312A JP 2004129842 A JP2004129842 A JP 2004129842A
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JP
Japan
Prior art keywords
liquid level
pump
time
storage container
heating
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
Application number
JP2002297312A
Other languages
Japanese (ja)
Inventor
Takayumi Fukuda
福田 高弓
Toshikatsu Maeda
前田 敏克
Hironobu Tanaka
田中 裕展
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2002297312A priority Critical patent/JP2004129842A/en
Publication of JP2004129842A publication Critical patent/JP2004129842A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To prevent continuous idle rotations of a pump and heating of a heating container without water because of failure in detecting the empty heating container when a liquid is discharged at a breakdown of liquid level detecting means or the like. <P>SOLUTION: An electric pot is equipped with a water storage container 1 for containing the liquid, the pump 3 discharging the liquid in the water storage container 1, a clocking means 4 for measuring time for driving the pump, the liquid level detecting means 2 for detecting a liquid level in the heating container 1, and a control means 5 for heating the water storage container 1 or for controlling the drive of the pump 3 depending on the results obtained by monitoring the time measured by the clocking means 4 and a change in the liquid level detected by the liquid level detecting means 2. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、電気湯沸かし器に関するものである。
【0002】
【従来の技術】
従来の電気湯沸かし器は図2に示すように、液体を加熱する貯水容器1と、前記貯水容器1内の液を排出するポンプと、前記加熱容器内の液位を検知する液位検知手段と、出湯スイッチを備え、出湯スイッチの信号によりポンプを駆動し出湯を行っている(例えば、特許文献1参照)。
【0003】
【特許文献1】
特開平9−154734号公報(第1−4項、第1図)
【0004】
【発明が解決しようとする課題】
しかしながら、前記従来の構成では、液位検知手段が故障した時等に於いて、液位検知手段により加熱容器内が空になった事を検知できず、出湯スイッチにより液体の排出が続けられ加熱容器内の液体が空になったとしても加熱動作が続けられ、加熱容器の空焼きが行われる可能性があった。また、加熱容器内の液体が空になってもポンプを連続駆動する可能性があり、ポンプの寿命を縮める可能性があった。
【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は、ポンプの駆動時間を計時する計時手段と、加熱容器内の液位を検知する検知手段と、ポンプの駆動時間を計時する計時手段と液位検知手段による液位変化の監視結果に応じて、加熱容器の加熱またはポンプの駆動制御を行う制御手段を設け、制御手段は計時手段によりポンプの駆動を所定時間計時できるのに液位検知手段により液位の変化を検知できないとき、加熱動作の停止又は抑制、及びポンプ駆動を停止可能とした構成としている。
【0006】
これにより、ポンプ駆動を所定時間計時しているのに、液位検知手段の故障等により所定の液位変化が検知できないとき、液位検知手段の故障であることを検出し、加熱動作を停止することにより加熱容器内の空焼きを防止、またはポンプ停止する事によりポンプの長期空回転を防止できる。
【0007】
【発明の実施の形態】
請求項1に記載の発明は、液体を収容する貯水容器と、前記貯水容器内の液体を排出するポンプと、前記ポンプの駆動時間を計時する計時手段と、前記貯水容器内の液位を検知する液位検知手段と、前記計時手段による計時時間および前記液位検知手段による液位変化に応じて、前記貯水容器の加熱または前記ポンプの駆動制御を行う制御手段とを備えた電気湯沸かし器とする。
【0008】
本構成によれば、ポンプの駆動時間と液位検知手段による液位の変化を監視できることにより、制御手段は予め想定したデータと監視結果が異なる場合、液位検知手段が異常であることを検出でき、貯水容器への加熱停止又はポンプの駆動停止を行うことにより機器の安全性、信頼性を高めることが可能となる。
【0009】
請求項2に記載の発明は、特に請求項1に記載の発明において、制御手段は、計時手段が、所定時間ポンプ駆動を計時し、かつ、液位検知手段が所定の液位変化を検知できないときには、ポンプの駆動を停止する電気湯沸かし器とする。
【0010】
本構成によれば、ポンプ駆動が所定時間計時されたにも関わらず、液位検知手段の故障により所定の液位変化が検知できないとき、液位位検知手段の故障であることを検出し、ポンプ駆動を停止することにより、ポンプの長期空回転を防止でき、機器の信頼性を向上を図ることができる。
【0011】
請求項3に記載の発明は、特に請求項1に記載の発明において、制御手段は、計時手段が、所定時間ポンプ駆動を計時し、かつ、液位検知手段が所定の液位変化を検知できないときには、貯水容器の加熱を停止する電気湯沸かし器とする。
【0012】
本構成によれば、ポンプ駆動が所定時間計時されたにも関わらず、液位検知手段の故障により水位の変化が検知できないとき、水位検知手段の故障であることを検出し、貯水容器の加熱を停止することにより、貯水容器の空焼きを防止でき、機器の安全を図ることができる。
【0013】
請求項4に記載の発明は、特に請求項1に記載の発明において、制御手段は、液位検知手段が所定の液位変化を検知し、かつ、計時手段が所定時間ポンプ駆動を計時できないときには、貯水容器の加熱を停止する電気湯沸かし器とする。
【0014】
本構成によれば、ポンプ駆動が所定時間計時されないにも関わらず、液位検知手段の故障又は加熱容器からの液体漏れ等により液位の変化を検知した時、貯水容器の加熱を停止することにより、空焼きを防止でき、機器の安全を図ることができる。
【0015】
請求項5に記載の発明は、特に請求項1に記載の発明において、制御手段は、液位検知手段が所定の液位変化を検知し、かつ、計時手段が所定時間ポンプ駆動を計時できないときには、ポンプ駆動を停止する電気湯沸かし器とする。
【0016】
本構成によれば、ポンプが駆動していない状態等においてポンプ駆動が所定時間計時されないにも関わらず、液位検知手段の故障又は貯水容器からの液体漏れにより液位の変化を検知した時、ポンプの駆動停止を維持し、貯水容器内の液体が空になった状態でのポンプの長期空回転を未然に防ぐ事ができ、機器の信頼性向上を図ることができる。
【0017】
請求項6に記載の発明は、特に請求項2〜5の何れか1項に記載の発明において、ポンプの駆動時間の累積時間を予め設定した所定時間とした電気湯沸かし器とする。
【0018】
本構成によれば、計時時間による計時時間を累積し、その累積時間を所定時間としたことにより、ポンプが休止と駆動を断続的に行われた場合に於いても、制御手段は所定時間と液位変化を監視し、その結果に応じて加熱の停止または加熱出力の抑制することにより貯水容器の空焼き防止、又はポンプ駆動を停止する事によりポンプの長期空回転を防止することが可能となり、機器の安全性、信頼性の向上を図ることができる。
【0019】
請求項7に記載の発明は、特に請求項2〜6の何れか1項に記載の発明において、ポンプの駆動停止または加熱停止したことを報知する報知手段を備えた電気湯沸かし器とする。
【0020】
本構成によれば、ポンプの駆動停止時又は加熱の停止時に、利用者は液位検知手段が異常であることが確認でき、機器の使用ができないことへの不満を軽減できる。
【0021】
【実施例】
(実施例)
以下、本発明の実施例1について図面を参照しながら説明する。図1は電気湯沸かし器の構成図である。図1において、1は液体を貯水して加熱または保温する貯水容器である。貯水容器1の底部分には貯水容器1内の液体を加熱または保温するヒータ6と、貯水容器1内の液体の温度を検知するサーミスタ7が取り付けられている。2は液位を検知する液位検知手段でコモン電極棒2aと対向する電極棒2b、2c間に流れる電流により液体の有無を検知する。
【0022】
また、貯水容器1内の液体を排出するポンプ3が取り付けられ、出液口9から液体が排出される。また、4はポンプの駆動時間を計時する計時手段である。5は計時手段4と液位位検知手段2からの信号により、ポンプの駆動が所定時間計時されたのに液位の変化が検知できないとき、液位検知手段異常と判定し加熱動作を停止、またはポンプの駆動を停止し、報知手段8に信号を出す制御手段である。
【0023】
実際の動作について、図1を参照にしながら説明する。液体が排出される際、ポンプ3が駆動し出液口9から貯水容器1内の液体が排出され、計時手段4はポンプが駆動する時間を計時し、計時した時間を制御手段5に送る。液位検知手段2のコモン電極棒の2aと電極棒2b、2c間それぞれには所定の電圧が印可されており、コモン電極棒2aと電極棒2bまたは2c間に水があるときは所定の電流が流れ、その電流を検知して制御手段5は液体が有りと判断する。
【0024】
逆に所定の電流が流れない時は液体が無と判定する。サーミスタ7の信号により貯水容器1内の液体の温度が低いと制御手段5が判断したとき、前記貯水容器1内の水が高温に達するまで加熱ヒータ6にて加熱し、それ以後加熱ヒータ6をオン、オフしながら保温を行う。貯水容器1内の液体を排出時、ポンプ3が駆動し加熱容器1内の液体が出液口9より排出される。排出に従って貯水容器1内の液位は低下していく。
【0025】
マイクロコンピュータ等で構成された制御手段5はポンプが駆動し、貯水容器1の液体が排出される時、電極棒2c水位から電極棒2bに達する時間もしくは若干多めの(電極棒2cから電極棒2bに達する時間の5〜30%増し程度の時間)時間を予め所定時間と記憶し、計時手段4によりポンプ駆動時間を計時し、所定時間に達したかを監視すると共に、液体検知手段2により液位が2b以下になったかを監視する。仮に電極棒2bが故障等により液位が検知できない場合、電極棒2b位置に液体が到達してしまったのに液体の排出が続行されたとしても、前記予め設定記憶された所定時間を越えた時点で、制御手段5は液位検知手段2部分が異常と判定すると共に、加熱動作を停止またはポンプの駆動を停止し、ブザーもしくはLED等で構成された報知手段8により液位電極手段部分が異常であることを報知する。
【0026】
ここで検知できる水位を2点としたが、電極棒を増やすことにより検知できる水位点を増やすことが出来る。また、電極棒が複数あり電極棒の先端間の距離がそれぞれにより異なる場合、それぞれの電極間に対してあらかじめ設定記憶する所定時間をそれぞれの電極間に対して異なった値とすることも出来る。
【0027】
以上のように本実施例によれば、制御手段5が計時手段4によるポンプ駆動の計時時間と液位検知手段2による液位の変化を監視する事により、液位検出手段2の故障等によりポンプ駆動が所定時間計時されるのに液位の変化が検知できない時、加熱を停止して貯水容器1の空焼きの防止、またはポンプ駆動の停止をすることによりポンプの長期空回転を防止でき、機器の安全性、信頼性の向上を図ることができる。
【0028】
尚、本実施例は計時手段4によりポンプ駆動が所定時間計時できるのに、液位検知手段2により所定の液位変化が検知できない場合としたが、計時手段4によりポンプ駆動が所定時間計時できないのに、液位検知手段2により所定の液位変化が検知できる場合も同様の効果を奏する。
【0029】
【発明の効果】
以上のように本発明によれば、液位検出手段の故障等によりポンプ駆動が所定時間計時されるのに液位の変化が検知できない時、加熱を停止して貯水容器の空焼きの防止、またはポンプ駆動の停止をすることによりポンプの長期空回転を防止でき、機器の安全性、信頼性の向上を図ることができる。
【図面の簡単な説明】
【図1】本発明の実施例を示す電気湯沸かし器の構成図
【図2】従来の電気湯沸かし器を示す構成図
【符号の説明】
1 貯水容器
2 液位検知手段
3 ポンプ
4 計時手段
5 制御手段
8 報知手段
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electric water heater.
[0002]
[Prior art]
As shown in FIG. 2, a conventional electric water heater includes a water storage container 1 for heating a liquid, a pump for discharging the liquid in the water storage container 1, a liquid level detection unit for detecting a liquid level in the heating container, A hot water switch is provided, and the pump is driven by the signal of the hot water switch to perform hot water (for example, see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 9-154732 (Section 1-4, FIG. 1)
[0004]
[Problems to be solved by the invention]
However, in the above-described conventional configuration, when the liquid level detecting means breaks down, the liquid level detecting means cannot detect that the inside of the heating container has been emptied, and the hot water switch continues to discharge the liquid, thereby causing the heating. Even if the liquid in the container becomes empty, the heating operation is continued, and there is a possibility that the heating container is baked. In addition, even if the liquid in the heating container becomes empty, there is a possibility that the pump is continuously driven, and the life of the pump is shortened.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned conventional problems, the present invention provides a time measuring means for measuring a driving time of a pump, a detecting means for detecting a liquid level in a heating vessel, a time measuring means for measuring a driving time of the pump, and a liquid level detection. Control means for controlling the heating of the heating vessel or the drive of the pump in accordance with the monitoring result of the liquid level change by the means, and the control means can measure the drive of the pump by the timer means for a predetermined time; When a change in position cannot be detected, the heating operation can be stopped or suppressed, and the pump drive can be stopped.
[0006]
With this, when a predetermined change in the liquid level cannot be detected due to a failure of the liquid level detecting means while the pump is being driven for a predetermined time, the failure of the liquid level detecting means is detected and the heating operation is stopped. By doing so, it is possible to prevent idling of the inside of the heating vessel, or to stop the pump for a long period of time by stopping the pump.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
According to the first aspect of the present invention, a water storage container for storing a liquid, a pump for discharging the liquid in the water storage container, a timing unit for measuring a driving time of the pump, and detecting a liquid level in the water storage container An electric water heater comprising a liquid level detecting means for performing heating of the water storage container or drive control of the pump in accordance with a time measured by the time measuring means and a liquid level change by the liquid level detecting means. .
[0008]
According to this configuration, since the driving time of the pump and the change in the liquid level by the liquid level detecting means can be monitored, the control means detects that the liquid level detecting means is abnormal when the data and the monitoring result differ in advance. It is possible to improve the safety and reliability of the equipment by stopping the heating of the water storage container or stopping the drive of the pump.
[0009]
According to a second aspect of the present invention, in particular, in the first aspect of the present invention, the control means is configured such that the time keeping means measures the pump drive for a predetermined time, and the liquid level detecting means cannot detect a predetermined liquid level change. Sometimes, an electric water heater that stops driving the pump is used.
[0010]
According to this configuration, when a predetermined change in the liquid level cannot be detected due to the failure of the liquid level detection means, the failure of the liquid level detection means is detected even though the pump drive is measured for a predetermined time, By stopping the pump drive, long-term idle rotation of the pump can be prevented, and the reliability of the device can be improved.
[0011]
According to a third aspect of the present invention, in particular, in the first aspect of the present invention, the control means is configured such that the timing means measures the pump drive for a predetermined time, and the liquid level detecting means cannot detect a predetermined liquid level change. Sometimes, an electric water heater is used to stop heating the water storage container.
[0012]
According to this configuration, when a change in the water level cannot be detected due to the failure of the liquid level detection means even though the pump drive is timed for the predetermined time, the failure of the water level detection means is detected and the heating of the water storage container is performed. By stopping the operation, it is possible to prevent the water storage container from being baked, and to ensure the safety of the device.
[0013]
According to a fourth aspect of the present invention, in the first aspect of the present invention, the control unit includes a control unit that determines whether the liquid level detection unit detects a predetermined liquid level change and the timer unit cannot time the pump drive for a predetermined time. And an electric water heater for stopping the heating of the water storage container.
[0014]
According to this configuration, the heating of the water storage container is stopped when a change in the liquid level is detected due to a failure of the liquid level detecting means or a liquid leak from the heating container, etc., even though the pump drive is not timed for a predetermined time. Thereby, empty baking can be prevented, and the safety of the device can be achieved.
[0015]
According to a fifth aspect of the present invention, in particular, in the first aspect of the present invention, when the liquid level detecting means detects a predetermined liquid level change and the time measuring means cannot time the pump drive for a predetermined time, , An electric water heater for stopping the driving of the pump.
[0016]
According to this configuration, even if the pump is not driven for a predetermined time in a state where the pump is not driven, for example, when a change in the liquid level is detected due to a failure of the liquid level detecting means or a liquid leak from the water storage container, By keeping the pump stopped, it is possible to prevent the pump from running for a long period of time when the liquid in the water storage container is empty, thereby improving the reliability of the device.
[0017]
According to a sixth aspect of the present invention, there is provided an electric water heater in which the accumulated time of the driving time of the pump is set to a predetermined time in the invention according to any one of the second to fifth aspects.
[0018]
According to this configuration, by accumulating the measured time by the measured time and setting the accumulated time to the predetermined time, even in the case where the pump is intermittently stopped and driven, the control unit sets the predetermined time. By monitoring the liquid level change and stopping the heating or suppressing the heating output according to the result, it is possible to prevent the water storage container from burning, or stop the pump drive to prevent the pump from running for a long period of time. Thus, the safety and reliability of the device can be improved.
[0019]
According to a seventh aspect of the present invention, there is provided an electric kettle provided with an informing means for informing that the driving of the pump has been stopped or the heating has been stopped, in particular, in the invention according to any one of the second to sixth aspects.
[0020]
According to this configuration, when the driving of the pump is stopped or the heating is stopped, the user can confirm that the liquid level detecting means is abnormal, and can reduce dissatisfaction with the inability to use the device.
[0021]
【Example】
(Example)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram of an electric water heater. In FIG. 1, reference numeral 1 denotes a water storage container for storing and heating or keeping the temperature of a liquid. A heater 6 for heating or keeping the liquid in the water storage container 1 and a thermistor 7 for detecting the temperature of the liquid in the water storage container 1 are attached to a bottom portion of the water storage container 1. Reference numeral 2 denotes a liquid level detecting means for detecting the liquid level by detecting the presence or absence of the liquid by the current flowing between the electrode rods 2b and 2c facing the common electrode rod 2a.
[0022]
Further, a pump 3 for discharging the liquid in the water storage container 1 is attached, and the liquid is discharged from the liquid outlet 9. Reference numeral 4 denotes a time measuring means for measuring the driving time of the pump. 5 is a signal from the timing means 4 and the liquid level detecting means 2, when the drive of the pump is timed for a predetermined time, but a change in the liquid level cannot be detected, it is determined that the liquid level detecting means is abnormal, and the heating operation is stopped. Alternatively, it is a control unit that stops driving of the pump and sends a signal to the notification unit 8.
[0023]
The actual operation will be described with reference to FIG. When the liquid is discharged, the pump 3 is driven and the liquid in the water reservoir 1 is discharged from the outlet 9, and the timer 4 measures the time during which the pump is driven, and sends the measured time to the controller 5. A predetermined voltage is applied between the common electrode rod 2a and the electrode rods 2b and 2c of the liquid level detecting means 2, and a predetermined current is applied when water is present between the common electrode rod 2a and the electrode rod 2b or 2c. Flows and the control means 5 determines that there is a liquid.
[0024]
Conversely, when the predetermined current does not flow, it is determined that there is no liquid. When the control means 5 determines that the temperature of the liquid in the water storage container 1 is low based on a signal from the thermistor 7, the water in the water storage container 1 is heated by the heater 6 until the water reaches a high temperature. Keep warm while turning on and off. When the liquid in the water storage container 1 is discharged, the pump 3 is driven and the liquid in the heating container 1 is discharged from the outlet 9. The liquid level in the water storage container 1 decreases with the discharge.
[0025]
When the pump is driven and the liquid in the water storage container 1 is discharged, the control means 5 composed of a microcomputer or the like has a time required to reach the electrode rod 2b from the water level of the electrode rod 2c or slightly longer (from the electrode rod 2c to the electrode rod 2b). ) Is stored in advance as a predetermined time, the pump driving time is measured by the timer 4, and whether the predetermined time has been reached is monitored. It monitors whether the position has become 2b or less. If the liquid level cannot be detected due to the failure of the electrode rod 2b or the like, even if the liquid has reached the position of the electrode rod 2b and the discharge of the liquid is continued, the predetermined time stored in advance and stored is exceeded. At this time, the control means 5 determines that the liquid level detecting means 2 portion is abnormal, stops the heating operation or stops the driving of the pump, and turns the liquid level electrode means portion on by the notifying means 8 including a buzzer or an LED. Notify that something is abnormal.
[0026]
Here, the water level that can be detected is set to two points, but the water level that can be detected can be increased by increasing the number of electrode rods. When there are a plurality of electrode rods and the distances between the tip ends of the electrode rods are different from each other, the predetermined time set and stored in advance for each electrode can be set to a different value for each electrode.
[0027]
As described above, according to the present embodiment, the control means 5 monitors the time of the pump drive by the time measuring means 4 and the change in the liquid level by the liquid level detecting means 2, and the control means 5 detects the failure of the liquid level detecting means 2. When a change in the liquid level cannot be detected even though the pump drive is timed for a predetermined time, heating can be stopped to prevent idling of the water storage container 1, or by stopping the pump drive, the long-term idling of the pump can be prevented. Thus, the safety and reliability of the device can be improved.
[0028]
In this embodiment, the pump drive can be measured by the timer 4 for a predetermined time, but the predetermined level change cannot be detected by the liquid level detector 2. However, the pump cannot be driven by the timer 4 for a predetermined time. However, the same effect can be obtained when the predetermined liquid level change can be detected by the liquid level detecting means 2.
[0029]
【The invention's effect】
As described above, according to the present invention, when a change in the liquid level cannot be detected even though the pump drive is timed for a predetermined time due to a failure of the liquid level detecting means or the like, the heating is stopped to prevent the water tank from being burned, Alternatively, by stopping the pump drive, long-term idle rotation of the pump can be prevented, and the safety and reliability of the device can be improved.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an electric water heater showing an embodiment of the present invention. FIG. 2 is a configuration diagram of a conventional electric water heater.
DESCRIPTION OF SYMBOLS 1 Water storage container 2 Liquid level detecting means 3 Pump 4 Time measuring means 5 Control means 8 Notification means

Claims (7)

液体を収容する貯水容器と、前記貯水容器内の液体を排出するポンプと、前記ポンプの駆動時間を計時する計時手段と、前記貯水容器内の液位を検知する液位検知手段と、前記計時手段による計時時間および前記液位検知手段による液位変化に応じて、前記貯水容器の加熱または前記ポンプの駆動制御を行う制御手段とを備えた電気湯沸かし器。A water storage container for storing a liquid, a pump for discharging the liquid in the water storage container, a timing unit for measuring the drive time of the pump, a liquid level detection unit for detecting a liquid level in the water storage container, and the timing An electric water heater having control means for heating the water storage container or controlling the drive of the pump in accordance with the time measured by the means and the liquid level change by the liquid level detecting means. 制御手段は、計時手段が、所定時間ポンプ駆動を計時し、かつ、液位検知手段が所定の液位変化を検知できないときには、ポンプの駆動を停止する請求項1に記載の電気湯沸かし器。2. The electric water heater according to claim 1, wherein the control means stops the driving of the pump when the timing means measures the pump driving for a predetermined time and the liquid level detecting means cannot detect a predetermined liquid level change. 制御手段は、計時手段が、所定時間ポンプ駆動を計時し、かつ、液位検知手段が所定の液位変化を検知できないときには、貯水容器の加熱を停止する請求項1に記載の電気湯沸かし器。2. The electric water heater according to claim 1, wherein the control means stops the heating of the water storage container when the time measuring means measures the pump driving for a predetermined time and the liquid level detecting means cannot detect the predetermined liquid level change. 制御手段は、液位検知手段が所定の液位変化を検知し、かつ、計時手段が所定時間ポンプ駆動を計時できないときには、貯水容器の加熱を停止する請求項1に記載の電気湯沸かし器。2. The electric water heater according to claim 1, wherein the control means stops heating of the water storage container when the liquid level detecting means detects a predetermined liquid level change and the timer means cannot time the pump drive for a predetermined time. 制御手段は、液位検知手段が所定の液位変化を検知し、かつ、計時手段が所定時間ポンプ駆動を計時できないときには、ポンプ駆動を停止する請求項1に記載の電気湯沸かし器。2. The electric water heater according to claim 1, wherein the control means stops the pump driving when the liquid level detecting means detects a predetermined liquid level change and the timer means cannot time the pump driving for a predetermined time. ポンプの駆動時間の累積時間を予め設定した所定時間とした請求項2〜5の何れか1項に記載の電気湯沸かし器。The electric water heater according to any one of claims 2 to 5, wherein the cumulative time of the driving time of the pump is a predetermined time set in advance. ポンプの駆動停止または加熱停止したことを報知する報知手段を備えた請求項2〜6の何れか1項に記載の電気湯沸かし器。The electric water heater according to any one of claims 2 to 6, further comprising a notification unit configured to notify that the driving of the pump has been stopped or the heating has been stopped.
JP2002297312A 2002-10-10 2002-10-10 Electric pot Pending JP2004129842A (en)

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JP2002297312A JP2004129842A (en) 2002-10-10 2002-10-10 Electric pot

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019023545A (en) * 2017-07-21 2019-02-14 パナソニックIpマネジメント株式会社 Humidifying device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019023545A (en) * 2017-07-21 2019-02-14 パナソニックIpマネジメント株式会社 Humidifying device

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