JP2010172368A - Hot water heater - Google Patents

Hot water heater Download PDF

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JP2010172368A
JP2010172368A JP2009015457A JP2009015457A JP2010172368A JP 2010172368 A JP2010172368 A JP 2010172368A JP 2009015457 A JP2009015457 A JP 2009015457A JP 2009015457 A JP2009015457 A JP 2009015457A JP 2010172368 A JP2010172368 A JP 2010172368A
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hot water
water
water tank
hot
temperature
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JP5131215B2 (en
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Toshisuke Tsuyose
俊祐 強瀬
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Fuji Electric Retail Systems Co Ltd
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Fuji Electric Retail Systems Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot water heater which does not increase the cost of the apparatus, includes boiling detection means capable of detecting boiling with sufficient accuracy, and is low-cost and highly reliable. <P>SOLUTION: The hot water heater includes a hot-water tank 3, water supply means 6 for supplying water to the tank, heating means 16 for heating the water, a float switch 17 for detecting an upper limit of a water level inside the hot-water tank 3, a temperature sensor 15 for detecting a temperature of the hot water inside the hot-water tank 3, and control means 30 for controlling the components, wherein the upper limit of the water level inside the hot-water tank 3 is maintained by the float switch 17 and the temperature of the hot water inside the tank is maintained at a set temperature by the temperature sensor 15. The hot water heater further includes the boiling detection means which determines that the hot water inside the hot-water tank 3 is boiling when water is not supplied into the hot-water tank 3 after the float switch 17 detects the upper limit of the water level, the heating means 16 is in operation, and the float switch 17 detects the upper limit of the water level repeatedly for a set number of times within a successive set time period. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、カップ式自動販売機や飲料ディスペンサ、給茶機等に適用され、コーヒー、紅茶等の飲料の調理に用いる湯を保温して貯留する給湯装置であって、特に湯の沸騰検知手段を備えた給湯装置に関する。   The present invention is applied to cup-type vending machines, beverage dispensers, tea dispensers, and the like, and is a hot water supply device that retains and stores hot water used for cooking beverages such as coffee and tea, and in particular, boiling water detection means It is related with the hot-water supply apparatus provided with.

従来のこのような湯の沸騰検知手段を備えた装置としては、先に出願公開された特開２０００−２８７８４４号公報（特許文献１）に記載されるような湯沸し器が知られている。この特許文献1に記載される湯沸し器は、液体を収容する容器と、その容器内の液体を加熱または保温する加熱手段と、その容器内の液体の温度を検知する温度検知手段と、その温度検知手段の検知温度により沸騰したことを検出する沸騰検出手段を備えたものであって、その温度検知手段が自動湯沸しを行う境界温度以下を検知すると、加熱手段を駆動して湯沸しを開始させ、その温度検知手段の入力により所定の温度上昇勾配より温度勾配が緩やかになったことを沸騰検知手段が検知して沸騰と判定し、加熱手段の駆動を停止させるもので、その温度検知手段がその出力部に急激な温度変化を吸収する遅延回路を設けたものである。これによれば、容器内の液体が加熱されその容器内に対流が生じ、温度検知手段がその対流に起因する温度上昇勾配が揺らいだ液温を検知する場合に、温度検知手段の検知温度を遅延回路により均すことで、安定した温度上昇勾配を沸騰検知手段に供給し、液温の揺らぎによる沸騰の誤検知を防止することができるというものである。   As a conventional apparatus equipped with such hot water boiling detection means, there is known a water heater as described in Japanese Patent Application Laid-Open No. 2000-287844 (Patent Document 1) previously published. The water heater described in Patent Document 1 includes a container that stores liquid, a heating unit that heats or keeps the liquid in the container, a temperature detection unit that detects the temperature of the liquid in the container, and a temperature thereof. It is equipped with a boiling detection means for detecting that it has boiled at the detection temperature of the detection means, and when the temperature detection means detects a temperature below the boundary temperature at which automatic water boiling is performed, the heating means is driven to start boiling, The boiling detection means detects that the temperature gradient has become gentler than the predetermined temperature rise gradient by the input of the temperature detection means, determines that it is boiling, stops the driving of the heating means, and the temperature detection means The output unit is provided with a delay circuit that absorbs a sudden temperature change. According to this, when the liquid in the container is heated and convection occurs in the container, and the temperature detecting means detects the liquid temperature at which the temperature rise gradient due to the convection fluctuates, the detected temperature of the temperature detecting means is reduced. By leveling with the delay circuit, a stable temperature rise gradient is supplied to the boiling detection means, and erroneous detection of boiling due to fluctuations in the liquid temperature can be prevented.

特開２０００−２８７８４４号公報JP 2000-287844 A

ところで、特許文献１に記載される湯沸し器は、温度検出手段が容器内の液温を計測し、液体の温度上昇勾配が鈍化した場合に液体が沸騰したものとして沸騰検知手段が判定するが、実際には容器内の液体の量や加熱手段の出力によって液体の温度上昇勾配は異なるから、その沸騰を精度良く検知するのは相当に難しく、また沸騰検知手段の構成もそれ故に複雑で高価なものとなることが多かった。特に、容器内に液体が満杯状態で収容される場合は、その沸騰の検知が遅れると、沸騰した液体や蒸気が機外に溢れ出して、火傷や装置の故障等の事故が発生する危険性が増す虞があった。   By the way, as for the water heater described in Patent Document 1, the temperature detection means measures the liquid temperature in the container, and the boiling detection means determines that the liquid has boiled when the temperature rise gradient of the liquid slows down. Actually, since the temperature rise gradient of the liquid differs depending on the amount of liquid in the container and the output of the heating means, it is quite difficult to accurately detect the boiling, and the configuration of the boiling detection means is therefore complicated and expensive. It was often a thing. In particular, when the container is filled with liquid, if the boiling detection is delayed, the boiling liquid or vapor may overflow outside the machine, resulting in an accident such as a burn or equipment failure. There was a risk of increasing.

本発明は、このような問題に対応するため、比較的に簡単な構成で、装置のコスト上昇を招かず、しかもなるべく精度良く沸騰検知が可能な沸騰検知手段を備えた低コストで信頼性の高い給湯装置を提供することを目的とするものである。   In order to deal with such problems, the present invention has a relatively simple configuration, does not increase the cost of the apparatus, and includes a boiling detection means capable of detecting boiling with high accuracy as much as possible. The object is to provide a high hot water supply apparatus.

上記課題を解決するため、請求項１に係る発明は、湯を貯留する温水タンクと、前記温水タンクに水を供給するための給水手段と、前記温水タンク内の水を加熱する加熱手段と、前記温水タンク内の上限水位を検知するフロートスイッチと、前記温水タンク内の湯の温度を検知する温度センサと、それらを制御する制御手段とが設けられ、前記フロートスイッチによる前記上限水位検知結果に基づいて前記給水手段が制御されることにより前記温水タンク内の上限水位が保持され、前記温度センサの検知温度に基づいて前記加熱手段が制御されることにより前記温水タンク内の湯温が設定温度に保持される給湯装置において、前記フロートスイッチが上限水位を検知した後に前記温水タンク内への水の供給がなく、かつ前記加熱手段が稼働中であって、その後の設定時間内に前記フロートスイッチが前記上限水位を設定回数繰り返して検知した場合に、前記温水タンク内の湯が沸騰したものとして判定する沸騰検知手段を備えたものである。   In order to solve the above problems, the invention according to claim 1 includes a hot water tank for storing hot water, a water supply means for supplying water to the hot water tank, a heating means for heating water in the hot water tank, A float switch for detecting the upper limit water level in the hot water tank, a temperature sensor for detecting the temperature of hot water in the hot water tank, and a control means for controlling them are provided, and the upper limit water level detection result by the float switch is provided. The upper water level in the hot water tank is maintained by controlling the water supply means based on the temperature, and the hot water temperature in the hot water tank is set to a set temperature by controlling the heating means based on the temperature detected by the temperature sensor. In the hot water supply apparatus held in the water, there is no supply of water to the hot water tank after the float switch detects the upper limit water level, and the heating means is in operation There, in the case where the subsequent of said float switch within the set time is detected by repeating the set number of times the upper limit water level, hot water in the hot water tank is that with determining boiling detecting means as having been boiled.

これによれば、前記温水タンク内の湯が前記加熱手段により加熱され沸騰したとき、その内部に気泡が発生して液面が上下に変動し、その液面の変動に準じて前記フロートスイッチが前記上限水位を繰り返して検知することを利用して、その湯の沸騰状態を検知することができる。したがって、沸騰検知手段として、水位検知手段であるフロートスイッチを利用することができるから、特に沸騰検知装置を設けることなく前記温水タンク内の湯の沸騰を検知することができる。また、気圧によって変化する沸騰温度に係わりなく湯の沸騰を検知することができるから、その沸騰検知を正確に行うことができる。   According to this, when the hot water in the hot water tank is heated and boiled by the heating means, bubbles are generated therein, the liquid level fluctuates up and down, and the float switch changes according to the fluctuation of the liquid level. The boiling state of the hot water can be detected by repeatedly detecting the upper limit water level. Therefore, since the float switch which is a water level detection means can be used as the boiling detection means, it is possible to detect boiling of hot water in the hot water tank without providing a boiling detection device. Moreover, since boiling of hot water can be detected irrespective of the boiling temperature which changes with atmospheric pressure, the boiling can be detected accurately.

また、請求項２に係る発明は、請求項１に記載の給湯装置において、さらに前記温度センサの温度検知結果に基づいて前記温水タンク内の湯の沸騰を検知する沸騰検知手段を備えたものである。
これによれば、前記容器内の湯の水位に係りなく湯の沸騰を検知することができる。また、前記容器内の水位が上限水位に有る場合は、前記フロートスイッチによる沸騰検知と前記温度センサによる沸騰検知の何れかにより沸騰を検知することができるから、容器内の湯が上限水位にある場合に、その沸騰検知をより確実にすることができる。 The invention according to claim 2 is the hot water supply apparatus according to claim 1, further comprising boiling detection means for detecting boiling of hot water in the hot water tank based on a temperature detection result of the temperature sensor. is there.
According to this, boiling of hot water can be detected regardless of the level of hot water in the container. Further, when the water level in the container is at the upper limit water level, boiling can be detected by either boiling detection by the float switch or boiling detection by the temperature sensor, so the hot water in the container is at the upper limit water level. In this case, the boiling detection can be made more reliable.

以上説明したように請求項１に係る発明によれば、沸騰検知手段として、水位検知手段であるフロートスイッチを利用して、温水タンク内の湯の沸騰を検知することができるから、特別に沸騰検知装置を備えること必要としない。すなわち装置のコスト上昇を招かない沸騰検知手段を備えた給湯装置を提供することができる。また、気圧によって変化する沸騰温度に係わりなく湯の沸騰を検知することで、その沸騰検知を正確に行うことができるから、信頼性の高い給湯装置を提供することができる。   As described above, according to the first aspect of the present invention, the boiling detection unit can detect boiling of hot water in the hot water tank by using a float switch that is a water level detection unit. It is not necessary to provide a detection device. That is, it is possible to provide a hot water supply apparatus provided with boiling detection means that does not increase the cost of the apparatus. In addition, by detecting boiling of hot water regardless of the boiling temperature that changes depending on the atmospheric pressure, the boiling can be detected accurately, so that a highly reliable hot water supply apparatus can be provided.

また、請求項２に係る発明によれば、前記容器内の湯の水位に係りなく湯の沸騰を検知することができ、また前記容器内の水位が上限水位にある場合は、前記フロートスイッチによる沸騰検知と前記温度センサによる沸騰検知の何れかにより沸騰を検知することができるから、沸騰した湯や蒸気が機外に溢れ出す事故を確実に防止し、安全性に優れた信頼性の高い給湯装置を提供することができる。   Moreover, according to the invention which concerns on Claim 2, the boiling of hot water can be detected irrespective of the water level of the hot water in the container, and when the water level in the container is at the upper limit water level, the float switch Boiling can be detected by either boiling detection or boiling detection by the temperature sensor, so it is possible to reliably prevent accidents where boiling water or steam overflows outside the machine, and to provide highly safe and reliable hot water supply. An apparatus can be provided.

本発明の実施形態の給湯装置を模式的に示す概略構成図である。It is a schematic block diagram which shows typically the hot water supply apparatus of embodiment of this invention. 本発明の実施形態の給湯装置の制御構成を示す制御ブロック図である。It is a control block diagram which shows the control structure of the hot water supply apparatus of embodiment of this invention.

本発明の実施の形態について図を参照して説明する。図１はカップ式自動販売機や飲料ディスペンサ等に適用される本発明の実施形態の給湯装置を模式的に示す概略構成図、図２は本発明の実施形態の給湯装置の制御構成を示す制御ブロック図である。図に示すように、本発明の給湯装置１は、湯を保温して貯留する温水タンク３と、温水タンク３上部の蓋部４に接続されて温水タンク３に上方から水を供給する給水管５と、給水管５に設けられた給水弁（給水手段）６と、温水タンク３の内部に設けられ、その上部の蓋部４に接続された給水管５から供給される水を、温水タンク３の底部に導く導水管７と、温水タンク３の側壁上部に接続されその内部の湯を外部に放出する出湯管８と、出湯管８に設けられた出湯弁９と、温水タンク３の上部に接続され、その上部から溢れる湯や蒸気を外部に排出するためのオーバーフロー管１０と、温水タンク３の底部に設けられ、その内部の湯を破棄するための排水管１１と、排水管１１に設けられた排水弁１２と、温水タンク３内の湯温を検知するための湯温センサ（温度センサ）１５と、温水タンク３内の湯を加熱する加熱ヒータ（加熱手段）１６と、温水タンク３内の水位に応じて変動するフロート１３によってその上限水位及び下限水位を検知するフロートスイッチ１７と、これらを制御する制御部（制御手段）３０等を備えている。   Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram schematically showing a hot water supply apparatus according to an embodiment of the present invention applied to a cup-type vending machine, a beverage dispenser, and the like, and FIG. 2 is a control showing a control configuration of the hot water supply apparatus according to the embodiment of the present invention. It is a block diagram. As shown in the figure, a hot water supply apparatus 1 according to the present invention includes a hot water tank 3 that retains hot water and stores the hot water tank 3 and a water supply pipe that is connected to a lid 4 at the top of the hot water tank 3 and supplies water to the hot water tank 3 from above. 5, a water supply valve (water supply means) 6 provided in the water supply pipe 5, and water supplied from the water supply pipe 5 provided inside the hot water tank 3 and connected to the lid 4 at the upper part thereof 3, a water guide pipe 7 that leads to the bottom of the hot water tank 3, a hot water pipe 8 that is connected to the upper part of the side wall of the hot water tank 3 and discharges hot water inside the hot water tank 3, a hot water valve 9 provided in the hot water pipe 8, and an upper part of the hot water tank 3 Are connected to the overflow pipe 10 for discharging hot water and steam overflowing from the upper part to the outside, a drain pipe 11 provided at the bottom of the hot water tank 3 for discarding the hot water inside, and a drain pipe 11 The drain valve 12 provided and the hot water temperature in the hot water tank 3 are detected. The hot water temperature sensor (temperature sensor) 15, the heater (heating means) 16 that heats the hot water in the hot water tank 3, and the float 13 that fluctuates depending on the water level in the hot water tank 3. And a control unit (control means) 30 for controlling them.

次に、このように構成される給湯装置１の動作について説明する。先ず、給水管５に設けられた給水弁６が開かれ、例えば水道水等の水源に接続された給水管５から水が温水タンク３内に供給される。そして、フロートスイッチ１７により温水タンク３内の水位が下限水位を超えたことが検知されると、加熱ヒータ１６が通電可能となり、湯タンク３内の水の加熱が開始される。そして、フロートスイッチ１７により温水タンク内の水位が上限水位に到達したことが検知されると、給水弁６が閉じられて温水タンク３内への給水が停止される。   Next, operation | movement of the hot water supply apparatus 1 comprised in this way is demonstrated. First, the water supply valve 6 provided in the water supply pipe 5 is opened, and water is supplied into the hot water tank 3 from the water supply pipe 5 connected to a water source such as tap water. When the float switch 17 detects that the water level in the hot water tank 3 has exceeded the lower limit water level, the heater 16 can be energized and heating of the water in the hot water tank 3 is started. When it is detected by the float switch 17 that the water level in the hot water tank has reached the upper limit water level, the water supply valve 6 is closed and the water supply to the hot water tank 3 is stopped.

ここで、温水タンク３内の湯は、加熱ヒータ１６の加熱によって上限温度（例えば９７℃）に到達するとそれが湯温センサ１５により検知されて加熱が停止され、それが下限温度（例えば９５℃）に低下すると再び加熱ヒータ１６による加熱が開始されるように制御される。そして、これにより温水タンク３内の湯温は、所定の温度（例えば９７℃〜９５℃）に保持される。このように、所定の温度に保持されて温水タンク３内に貯留される湯は、出湯弁９が開かれることにより出湯管８を介して外部に放出され、コーヒー、紅茶等の飲料の調理に用いられる。そして、これにより温水タンク３内の湯量が減少して、フロートスイッチ１７により温水タンク内の水位が上限水位に到達していないことが検知されると、再び給水弁６が開かれて温水タンク３内への給水が開始される。すなわち、このようにして温水タンク３内の湯は、その水位が概ね上限水位の状態にあるように保持される。なお、温水タンク３内の湯量が、下限水位を割り込んで減少したこと（すなわち下限水位を超えていないこと）がフロートスイッチ１７により検知されると、空焚き防止のため加熱ヒータ１６への通電が遮断される。   Here, when the hot water in the hot water tank 3 reaches the upper limit temperature (for example, 97 ° C.) by the heating of the heater 16, it is detected by the hot water temperature sensor 15, and the heating is stopped. ), The heating by the heater 16 is started again. As a result, the hot water temperature in the hot water tank 3 is maintained at a predetermined temperature (for example, 97 ° C. to 95 ° C.). Thus, the hot water kept at the predetermined temperature and stored in the hot water tank 3 is discharged to the outside through the hot water discharge pipe 8 when the hot water valve 9 is opened, and used for cooking beverages such as coffee and tea. Used. When the amount of hot water in the hot water tank 3 is thereby reduced and the float switch 17 detects that the water level in the hot water tank has not reached the upper limit water level, the water supply valve 6 is opened again and the hot water tank 3 is opened. Water supply to the inside is started. That is, the hot water in the hot water tank 3 is held in this way so that the water level is approximately at the upper limit water level. When the float switch 17 detects that the amount of hot water in the hot water tank 3 has fallen below the lower limit water level (that is, does not exceed the lower limit water level), the heater 16 is energized to prevent emptying. Blocked.

また、本発明の給湯装置1は、温水タンク３内の湯が沸騰したことを検知する沸騰検知手段を備えている。この沸騰検知手段は、フロートスイッチ１７により温水タンク３内の水位が上限水位に到達したことが検知された後に、温水タンク３内への水の供給がなく、かつ加熱ヒータ１６が通電中であって、フロートスイッチ１７が先の上限水位を検知した後の設定時間（例えば１０分）内に、再び上限水位を設定回数（例えば２０回）繰り返して検知した場合に、温水タンク３内の湯が沸騰したものとして制御部３０が判定し、加熱ヒータ１６の通電を遮断するものである。これは、温水タンク３内の湯が上限水位にある状態で、湯が沸騰すると、その内部に気泡が発生して水面が波立つように揺れ動き、それによってフロート１２が浮き沈みして、フロートスイッチ１７が擬似的に上限水位を繰り返して検知するように動作することを利用するものである。なお、フロートスイッチ１７が温水タンク３内の上限水位を検知した後に、設定時間内に上限水位を設定回数繰り返して検知しなかった場合は、沸騰検知手段がリセットされ、改めてフロートスイッチ１７が温水タンク３内の上限水位を検知したときに設定時間の計時が開始される。このようにして常に温水タンク３内の沸騰が監視される。   Moreover, the hot water supply apparatus 1 of the present invention includes boiling detection means for detecting that the hot water in the hot water tank 3 has boiled. In this boiling detection means, after the float switch 17 detects that the water level in the hot water tank 3 has reached the upper limit water level, there is no supply of water into the hot water tank 3 and the heater 16 is energized. When the float switch 17 detects the upper limit water level repeatedly for a set number of times (for example, 20 times) within a set time (for example, 10 minutes) after the previous upper limit water level is detected, the hot water in the hot water tank 3 is discharged. The controller 30 determines that the water has boiled and cuts off the energization of the heater 16. This is because when the hot water in the hot water tank 3 is at the upper limit water level, when the hot water boils, bubbles are generated in the hot water tank and the water surface sways so that the water surface undulates. As a result, the float 12 floats and sinks. Is to operate so as to detect the upper limit water level repeatedly in a pseudo manner. In addition, after the float switch 17 detects the upper limit water level in the hot water tank 3, when the upper limit water level is not repeatedly detected within the set time, the boiling detection means is reset, and the float switch 17 is again set in the hot water tank. When the upper water level in 3 is detected, the set time is started. In this way, boiling in the hot water tank 3 is always monitored.

これによれば、沸騰検知手段として、水位検知手段として備えられたフロートスイッチ１７を利用することができるから、特別に沸騰検知装置を装備することなく温水タンク３内の湯の沸騰を容易に検知することができる。すなわち、装置のコスト上昇を招かない沸騰検知手段を備えた給湯装置１を提供することができる。また、装置の設置場所の標高（気圧）によって変化する沸騰点温度に係わりなく湯の沸騰を検知することができるから、その沸騰検知を正確に行うことができる。したがって、信頼性の高い給湯装置を提供することができる。   According to this, since the float switch 17 provided as the water level detection means can be used as the boiling detection means, the boiling of hot water in the hot water tank 3 can be easily detected without specially equipped with a boiling detection device. can do. That is, the hot water supply apparatus 1 provided with the boiling detection means which does not cause the cost increase of an apparatus can be provided. Moreover, since boiling of hot water can be detected irrespective of the boiling point temperature which changes with the altitude (atmospheric pressure) of the installation location of the apparatus, the boiling can be detected accurately. Therefore, a highly reliable hot water supply apparatus can be provided.

また、本発明の給湯装置１は、フロートスイッチ１７による沸騰検知手段の他に、湯温センサ１５の温度検知結果に基づいて、温水タンク３内の湯の沸騰を検知する沸騰検知手段を備えても良い。例えば、湯温センサ１５によって検知される温水タンク３内の湯温が沸騰検知温度（例えば９８℃）に到達すれば、温水タンク３内の湯が沸騰したものと制御部３０が判定し、或いは、湯温センサ１５によって検知される温水タンク３内の湯温の温度上昇勾配が、所定の温度上昇勾配よりも緩やかになった場合にその湯が沸騰したものと制御部３０が判定し、加熱ヒータ１６の通電を遮断するものであっても良い。   Further, the hot water supply apparatus 1 according to the present invention includes boiling detection means for detecting boiling of hot water in the hot water tank 3 based on the temperature detection result of the hot water temperature sensor 15 in addition to the boiling detection means by the float switch 17. Also good. For example, if the hot water temperature in the hot water tank 3 detected by the hot water temperature sensor 15 reaches the boiling detection temperature (for example, 98 ° C.), the control unit 30 determines that the hot water in the hot water tank 3 has boiled, or When the temperature rise gradient of the hot water temperature in the hot water tank 3 detected by the hot water temperature sensor 15 becomes gentler than the predetermined temperature rise gradient, the control unit 30 determines that the hot water has boiled, and the heating The heater 16 may be turned off.

これによれば、温水タンク３内の湯の水位に係りなく（すなわち、温水タンク３内の湯の水位が上限水位にない場合も）湯の沸騰を検知することができ、また温水タンク３内の水位が上限水位にある場合は、フロートスイッチ１７による沸騰検知と湯温センサ１５による沸騰検知の何れかにより沸騰を確実に検知することができるから、沸騰した湯や蒸気が温水タンク３から溢れ出して機外に漏れる事故を確実に防止し、安全性に優れた信頼性の高い給湯装置を提供することができる。   According to this, boiling of hot water can be detected regardless of the hot water level in the hot water tank 3 (that is, even when the hot water level in the hot water tank 3 is not at the upper limit water level). When the water level is at the upper limit water level, boiling can be reliably detected by either boiling detection by the float switch 17 or boiling detection by the hot water temperature sensor 15, so that boiling hot water or steam overflows from the hot water tank 3. It is possible to reliably prevent accidents that occur and leak out of the machine, and provide a highly reliable and reliable hot water supply apparatus.

なお、本発明は、言うまでもなく本実施の形態に示す装置にのみ限定されず、その趣旨の包含する範囲で応用変更が可能である。例えば、温水タンク３や、その内部に設けられる加熱ヒータ１６、フロート１２及びフロートスイッチ１７の構成、形状等、あるいは、フロートスイッチ１７が上限水位を繰り返し検知する設定時間、設定回数、温水タンク３内の湯温の上限温度、下限温度、沸騰検知温度等の各設定値は、この実施形態に示すものに限定されるものではない。   Needless to say, the present invention is not limited to the apparatus shown in this embodiment mode, and application changes can be made within the scope of the spirit of the present invention. For example, the configuration, shape, etc. of the hot water tank 3 and the heater 16, the float 12 and the float switch 17 provided therein, or the set time, the set number of times, and the number of times in the hot water tank 3 that the float switch 17 repeatedly detects the upper limit water level. Each set value such as the upper limit temperature, the lower limit temperature, and the boiling detection temperature of the hot water is not limited to that shown in this embodiment.

１ 給湯装置
３ 温水タンク
５ 給湯管
６ 給水弁（給水手段）
８ 出湯管
９ 出湯弁
１０ オーバーフロー管
１３ フロート
１５ 湯温センサ（温度センサ）
１６ 加熱ヒータ（加熱手段）
１７ フロートスイッチ
３０ 制御部（制御手段）
DESCRIPTION OF SYMBOLS 1 Hot water supply apparatus 3 Hot water tank 5 Hot water supply pipe 6 Water supply valve (water supply means)
8 Tap pipe 9 Tap valve 10 Overflow pipe 13 Float 15 Hot water temperature sensor (temperature sensor)
16 Heating heater (heating means)
17 Float switch 30 Control unit (control means)

Claims (2)

湯を貯留する温水タンクと、前記温水タンクに水を供給するた給水手段と、前記温水タンク内の水を加熱する加熱手段と、前記温水タンク内の上限水位を検知するフロートスイッチと、前記温水タンク内の湯の温度を検知する温度センサと、それらを制御する制御手段とが設けられ、前記フロートスイッチによる前記上限水位検知結果に基づいて前記給水手段が制御されることにより前記温水タンク内の上限水位が保持され、前記温度センサの検知温度に基づいて前記加熱手段が制御されることにより前記温水タンク内の湯温が設定温度に保持される給湯装置において、前記フロートスイッチが上限水位を検知した後に前記温水タンク内への水の供給がなく、かつ前記加熱手段が稼働中であって、その後の設定時間内に前記フロートスイッチが前記上限水位を設定回数繰り返して検知した場合に、前記温水タンク内の湯が沸騰したものとして判定する沸騰検知手段を備えたことを特徴とする給湯装置。   A hot water tank for storing hot water, a water supply means for supplying water to the hot water tank, a heating means for heating water in the hot water tank, a float switch for detecting an upper limit water level in the hot water tank, and the hot water A temperature sensor for detecting the temperature of hot water in the tank and a control means for controlling them are provided, and the water supply means is controlled on the basis of the upper limit water level detection result by the float switch, whereby the hot water tank In the hot water supply device in which the upper limit water level is maintained and the heating means is controlled based on the temperature detected by the temperature sensor, the hot water temperature in the hot water tank is maintained at the set temperature, and the float switch detects the upper limit water level. After that, there is no supply of water into the hot water tank, and the heating means is in operation, and the float switch is set within a set time thereafter. Wherein when detecting the upper limit water level is repeated predetermined number of times, water heater hot water in the hot water tank is characterized by comprising determining the boiling detection section as having been boiled. 前記温度センサの温度検知結果に基づいて、前記温水タンク内の湯の沸騰を検知する沸騰検知手段をさらに備えたものであることを特徴とする請求項１に記載の給湯装置。   The hot water supply apparatus according to claim 1, further comprising boiling detection means for detecting boiling of hot water in the hot water tank based on a temperature detection result of the temperature sensor.
JP2009015457A 2009-01-27 2009-01-27 Water heater Expired - Fee Related JP5131215B2 (en)

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WO2010143864A3 (en) * 2009-06-08 2011-03-31 Woongjin Coway Co., Ltd Water purifier
KR101146452B1 (en) 2009-09-29 2012-05-18 웅진코웨이주식회사 Water purifier
CN105508236A (en) * 2016-01-11 2016-04-20 曹文涛 Water pump for pumping water for electric appliance
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WO2022126609A1 (en) * 2020-12-18 2022-06-23 佛山市顺德区美的饮水机制造有限公司 Water production device, control method and control apparatus for water production device, and electronic device

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