JP2006125746A - Storage type hot water heater - Google Patents

Storage type hot water heater Download PDF

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JP2006125746A
JP2006125746A JP2004315454A JP2004315454A JP2006125746A JP 2006125746 A JP2006125746 A JP 2006125746A JP 2004315454 A JP2004315454 A JP 2004315454A JP 2004315454 A JP2004315454 A JP 2004315454A JP 2006125746 A JP2006125746 A JP 2006125746A
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hot water
amount
tank
bathtub
remaining
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Junichi Hattori
順一 服部
Masafumi Hashimoto
雅文 橋本
Shinji Kushida
慎治 櫛田
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To resolve a problem in a means for detecting a remaining hot water temperature of a tank, and carrying out boiling for preventing hot water shortage wherein there is a chance that hot water shortage will happen during bathtub filling hot water supply continuously supplying a lot of hot water. <P>SOLUTION: The storage type water heater is provided with a tank 10, a heat source unit 18 boiling hot water in the tank 10, and remaining hot water temperature detectors 30a-30d detecting the remaining hot water temperature in the tank 10. Comparison between heating values of a hot water amount necessary for filling a bathtub, and a hot water amount in the tank 10 is carried out when a user starts the bathtub filling hot water supply to the bathtub 21. If it is judged that the heating value is insufficient with the hot water amount in the tank 10, by carrying out boiling of the hot water in the tank 10 by the heat source unit 18, boiling can be started before a remaining hot water amount of the tank 10 becomes small due to the bathtub filling hot water supply, and hot water shortage can be prevented by securing a sufficient amount of remaining hot water. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は浴槽への湯張り量とタンクの残湯との熱量比較により、タンクの熱量不足と判断されたときに沸き上げを行う貯湯式給湯器に関するものである。   The present invention relates to a hot water storage type hot water heater that performs boiling when it is determined that the amount of heat in a tank is insufficient by comparing the amount of hot water in a bathtub and the amount of remaining hot water in the tank.

従来、この種の貯湯式給湯器は、タンクの残湯量を検知する残湯温度検出器によって、タンク内の湯量が所定湯量以下になったことを検出すると、タンク内の湯水の沸き上げを行うものであった（例えば、特許文献１参照）。   Conventionally, this type of hot water storage type hot water heater boils hot water in a tank when it detects that the amount of hot water in the tank has become a predetermined amount or less by means of a remaining hot water temperature detector that detects the amount of hot water in the tank. (For example, refer to Patent Document 1).

図３は特許文献１に記載された従来の貯湯式給湯器を示すものである。図３において、１は貯湯タンク、２は熱源機、３ａ〜３ｄは残湯温度検出器、４は混合弁、５は浴槽、６はカラン、７はシャワーである。   FIG. 3 shows a conventional hot water storage type hot water heater described in Patent Document 1. In FIG. In FIG. 3, 1 is a hot water storage tank, 2 is a heat source device, 3a to 3d are remaining hot water temperature detectors, 4 is a mixing valve, 5 is a bathtub, 6 is a currant, and 7 is a shower.

この貯湯式給湯器において、まず深夜時間帯の料金の安い深夜電力によって沸き上げが行われ、タンク１にお湯が貯湯される。その後、昼間時間帯に使用者が浴槽５へ風呂湯張り給湯を行うと、混合弁４によってタンク１に貯湯されたお湯と水が混合され、所定の温度となって供給される。同じくカラン６、シャワー７からも給湯が行われると、混合弁４によって所定温度のお湯が供給される。そして、給湯を行うことでタンク１の残湯量が減少していき、残湯温度検出器３が所定の残湯量以下になったことを検出すると、湯切れを防止するため、熱源機２を駆動しタンク１内の湯水の沸き上げを行う。
特開２００４−２４５４５９号公報 In this hot water storage type water heater, boiling is performed by midnight electric power which is cheap in the late night hours, and hot water is stored in the tank 1. Thereafter, when the user performs hot water supply to the bathtub 5 during the daytime, hot water stored in the tank 1 and water are mixed by the mixing valve 4 and supplied at a predetermined temperature. Similarly, when hot water is supplied from the currant 6 and the shower 7, hot water having a predetermined temperature is supplied by the mixing valve 4. When the hot water supply is performed, the amount of remaining hot water in the tank 1 is decreased, and when the remaining hot water temperature detector 3 detects that the amount of remaining hot water is equal to or less than a predetermined amount of remaining hot water, the heat source device 2 is driven to prevent the hot water from running out. Boil the hot water in the water tank 1.
Japanese Patent Laid-Open No. 2004-245459

しかしながら、前記従来の構成は、給湯を行うことで減少した残湯量を検出することによって、湯切れを防止する沸き上げ運転を行うものであり、たくさんのお湯を連続的に供給し続ける風呂湯張り給湯を行っている途中で残湯量の減少を検知し、沸き上げを開始しても、湯切れに至ってしまう恐れがある。このとき湯切れに至ることなく風呂湯張り給湯と同時に沸き上げるためには、１８ｋＷ以上の出力を有する熱源機が必要であり、現在の一般的な家庭用の貯湯式給湯器には、そのような高出力の熱源機は搭載されていない（熱源機の能力は、給湯量：１０Ｌ／ｍｉｎ、給湯温度：４０℃、給水温度：１５℃として算出）。   However, the conventional configuration performs a boiling operation to prevent running out of hot water by detecting the amount of remaining hot water that has decreased due to hot water supply. Even if a decrease in the amount of remaining hot water is detected during hot water supply and boiling is started, the hot water may run out. At this time, in order to boil the hot water at the same time as the hot water supply without bathing, a heat source device having an output of 18 kW or more is required, and the current general hot water storage hot water heater for home use is like that. No high-output heat source machine is mounted (the capacity of the heat source machine is calculated assuming that the amount of hot water supply is 10 L / min, the hot water supply temperature is 40 ° C., and the water supply temperature is 15 ° C.).

本発明は、前記従来の課題を解決するのもので、使用者が浴槽への風呂湯張り給湯を開始したときに風呂の湯張りに必要な湯量と、タンク内の湯量との熱量の比較を行い、タンク内の湯量では熱量が不足していると判断されると、熱源機によりタンク内の湯水の沸き上げを行うことで、早く沸き上げ開始することができ、湯切れに至ることを防止することを目的とする。   The present invention solves the above-mentioned conventional problem, and compares the amount of heat between the amount of hot water required for bathing and the amount of hot water in the tank when the user starts bathing in the bath. If the amount of heat in the tank is determined to be insufficient, the heat source can boil the hot water in the tank and start boiling quickly, preventing hot water from running out. The purpose is to do.

前記従来の課題を解決するために本発明の貯湯式給湯器は、湯水を貯湯するタンクと、前記タンク内の湯水を沸き上げる熱源機と、前記タンク内の残湯量を検出する残湯温度検出器と、浴槽への湯張り運転をオン／オフ制御する風呂運転スイッチと浴槽への風呂必要湯量を設定する湯量設定スイッチを有したリモコンとを備え、浴槽への湯張り運転を開始したときに前記残湯温度検出器で検出した前記タンク内の湯量が前記リモコンの湯量設定スイッチで設定された風呂必要湯量より少ない場合は前記熱源機により前記タンク内の湯水の沸き上げを行う貯湯式給湯器としたものである。   In order to solve the above-described conventional problems, a hot water storage type water heater of the present invention includes a tank for storing hot water, a heat source device for boiling hot water in the tank, and a remaining hot water temperature detection for detecting the amount of remaining hot water in the tank. And a remote control with a hot water setting switch for setting the required amount of hot water for the bathtub when the hot water operation for the bathtub is started. When the amount of hot water in the tank detected by the remaining hot water temperature detector is less than the required amount of hot water in the bath set by the hot water amount setting switch of the remote controller, the hot water storage type hot water heater that boils hot water in the tank by the heat source device It is what.

これによって、風呂湯張り給湯によりタンクの残湯量が少なくなる前に沸き上げを開始することとなり、十分な残湯量を確保することで湯切れを防止することになる。   As a result, boiling is started before the amount of remaining hot water in the tank is reduced due to the hot water supply from the bath, and running out of hot water is prevented by securing a sufficient amount of remaining hot water.

本発明の貯湯式給湯器は、風呂湯張り給湯によりタンクの残湯量が少なくなる前から沸き上げを開始することができ、十分な残湯量を確保することで、湯張りによって湯切れに至ることを防止すると共に、湯張り後の保温、足し湯、シャワーに必要な湯量も確保することができ、快適に入浴することができる。   The hot water storage type water heater of the present invention can start boiling before the remaining hot water amount in the tank decreases due to the hot water filling in the bath, and the hot water filling causes the hot water to run out. In addition, it is possible to secure the amount of hot water necessary for hot water retention, additional hot water, and shower after hot water filling.

第１の発明は、湯水を貯湯するタンクと、前記タンク内の湯水を沸き上げる熱源機と、前記タンク内の残湯量を検出する残湯温度検出器と、浴槽への湯張り運転をオン／オフ制御する風呂運転スイッチと浴槽への風呂必要湯量を設定する湯量設定スイッチを有したリモコンとを備え、浴槽への湯張り運転を開始したときに前記残湯温度検出器で検出した前記タンク内の湯量が前記リモコンの湯量設定スイッチで設定された風呂必要湯量より少ない場合は前記熱源機により前記タンク内の湯水の沸き上げを行う貯湯式給湯器とすることにより、風呂湯張り給湯によりタンクの残湯量が少なくなる前に沸き上げを開始することとなり、十分な残湯量を確保することで湯切れを防止することができる。   In a first aspect of the present invention, a tank for storing hot water, a heat source device for boiling the hot water in the tank, a remaining hot water temperature detector for detecting the amount of remaining hot water in the tank, and a hot water filling operation to the bathtub are turned on / The tank has a bath operation switch for off-control and a remote control having a hot water setting switch for setting a required amount of hot water for the bathtub, and the inside of the tank detected by the remaining hot water temperature detector when the hot water filling operation to the bathtub is started. If the amount of hot water in the bath is less than the required hot water amount set with the hot water setting switch on the remote controller, a hot water storage water heater that heats up the hot water in the tank with the heat source device is used. Boiling is started before the amount of remaining hot water is reduced, and running out of hot water can be prevented by securing a sufficient amount of remaining hot water.

第２の発明は、特に、第１の発明の風呂必要湯量は、浴槽の湯張りに必要な湯量に、湯張り後の浴槽の保温や足し湯、及びシャワーに必要な湯量を加算したものとすることにより、風呂湯張り給湯によりタンクの残湯量が少なくなる前に沸き上げを開始することとなり、湯張りによって湯切れに至ることを防止すると共に、湯張り後の足し湯や、シャワーに必要な湯量も確保することができ、快適に入浴することができる。   In the second invention, in particular, the amount of hot water required for the bath of the first invention is obtained by adding the amount of hot water necessary for hot water filling of the bathtub to the amount of hot water necessary for hot water in the bathtub after hot water filling, additional hot water, and shower. This will start boiling before the remaining hot water in the tank is reduced due to the hot water supply in the bath, preventing the hot water from filling up, and it is necessary for the additional hot water after the hot water filling and the shower A large amount of hot water can be secured, and bathing can be performed comfortably.

第３の発明は、特に、浴槽への湯張り量を検出する湯張量検出器と、前回の浴槽への湯張り量を風呂必要湯量として記憶する湯張量記憶部を備え、浴槽への風呂湯張り給湯を開始したときに、残湯温度検出器が検出したタンク内の湯量が前記湯張量記憶部が記憶している風呂必要湯量より少ない場合は、熱源機により前記タンク内の湯水の沸き上げを行う貯湯式給湯器とすることにより、風呂湯張り給湯によりタンクの残湯量が少なくなる前に沸き上げを開始することとなり、十分な残湯量を確保することで湯切れを防止することができる。   In particular, the third invention includes a hot water amount detector that detects the amount of hot water in the bathtub, and a hot water amount storage unit that stores the previous hot water amount in the bathtub as the required hot water amount for the bath. When the amount of hot water in the tank detected by the remaining hot water temperature detector is less than the required hot water amount stored in the hot water storage unit when the bath hot water supply is started, the hot water in the tank is By using a hot water storage type water heater that heats up the water, boiling water will be started before the remaining amount of water in the tank decreases due to the hot water supply to the bath, preventing running out of water by ensuring a sufficient amount of remaining hot water. be able to.

第４の発明は、特に、浴槽への風呂湯張り給湯を開始してから湯張量検出器で浴槽へ注湯されている湯量を積算して現在注湯量とし、前記残湯温度検出器が検出したタンク内の湯量との熱量が風呂必要湯量から前記現在注湯量を差し引いた湯量より少ない場合は、熱源機により前記タンク内の湯水の沸き上げを行うことで、タンク内の湯量では熱量が不足していると判断された時点から、熱源機によりタンク内の湯水の沸き上げを行うこととなり、湯張り途中で炊事などの給湯によってタンクのお湯が使用された場合に、湯切れに至ることを防止するとができる。   In particular, the fourth aspect of the present invention integrates the amount of hot water poured into the bathtub with the hot water amount detector after the bath hot water supply to the bathtub is started, and obtains the current hot water amount. If the amount of heat with the detected amount of hot water in the tank is less than the amount of hot water required by subtracting the amount of hot water to be poured from the required amount of hot water in the bath, the amount of heat in the amount of hot water in the tank From the point when it is determined that there is a shortage, hot water in the tank will be boiled up by the heat source machine, and if the hot water in the tank is used due to hot water supply such as cooking in the middle of hot water filling, the hot water will run out Can be prevented.

第５の発明は、特に、第３の発明の風呂必要湯量を、過去の所定日数期間内の最大湯量として記憶して、タンク内の湯量との熱量の比較を行うこととなり、使用者の生活パターンにおける最大値で判定することができ、生活パターンの変動における湯切れを防止することができる。   In particular, the fifth invention stores the amount of hot water required for the bath of the third invention as the maximum amount of hot water in a predetermined number of days in the past, and compares the amount of heat with the amount of hot water in the tank. It can be determined by the maximum value in the pattern, and it is possible to prevent running out of hot water due to changes in lifestyle patterns.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

（実施の形態１）
図１は、本発明の第１の実施の形態における貯湯式給湯器の構成図を示すものである。 (Embodiment 1)
FIG. 1 shows a configuration diagram of a hot water storage type water heater in a first embodiment of the present invention.

図１において、１０はお湯を貯湯するタンクであり、上部には出湯管１１を、タンク１０の下部には入水管１２を有している。入水管１２は上水道が接続される給水口１３から、水道圧を減圧させる減圧弁１４を介して接続されている。タンク１０内では、比重差からお湯が上部、水が下部に分離し、タンク１０内の湯水の沸き上げ時にはタンク１０上部からお湯が貯湯されることで、お湯が押し下げられる形で層を形成して蓄積される。そして、出湯管１１から給湯されると、それに伴い入水管１２からタンク１０内に水が給水されて、タンク１０内は常に湯水で満たされた状態となる。   In FIG. 1, reference numeral 10 denotes a hot water storage tank, which has a hot water discharge pipe 11 at the upper part and a water intake pipe 12 at the lower part of the tank 10. The water intake pipe 12 is connected from a water supply port 13 to which a water supply is connected via a pressure reducing valve 14 for reducing the water pressure. In the tank 10, hot water is separated into the upper part and water is separated into the lower part due to the difference in specific gravity, and when boiling the hot water in the tank 10, hot water is stored from the upper part of the tank 10, thereby forming a layer in which the hot water is pushed down. Accumulated. When hot water is supplied from the hot water outlet pipe 11, water is supplied from the water inlet pipe 12 into the tank 10, and the tank 10 is always filled with hot water.

タンク１０の湯水の沸き上げは、制御器１５によって動作が制御されている。タンク１０には、下部から上部へと連結された沸き上げ配管１６が接続されてあり、その沸き上げ配管１６には、沸き上げポンプ１７と熱源機１８が介在している。沸き上げポンプ１７を駆動することで、タンク１０下部の湯水を熱源機１８へと供給し、熱源機１８によって湯水が過熱した後、タンク１０上部へと戻されることで貯湯されていく。このとき熱源部１８は、圧縮機、水冷媒熱交換器、減圧装置、空気熱交換器等が設けられたヒートポンプサイクル機構を有したヒートポンプ若しくヒータとする。   The operation of boiling water in the tank 10 is controlled by the controller 15. A boiling pipe 16 connected from the lower part to the upper part is connected to the tank 10, and a boiling pump 17 and a heat source device 18 are interposed in the boiling pipe 16. By driving the boiling pump 17, hot water at the lower part of the tank 10 is supplied to the heat source unit 18, and after the hot water is overheated by the heat source unit 18, the hot water is returned to the upper part of the tank 10 to be stored. At this time, the heat source unit 18 is a heat pump or a heater having a heat pump cycle mechanism provided with a compressor, a water refrigerant heat exchanger, a decompression device, an air heat exchanger, and the like.

一般的に貯湯式給湯器は、安い深夜電力を利用する夜間蓄熱型の給湯器として、夜間にタンク１０全量の湯水の沸き上げを行う。よって、使用者は夜間に沸き上げられたお湯を、昼間の給湯に利用しているということになる。使用者がカラン１９、シャワー２０、浴槽２１の何れかの給湯を行うとき、タンク１０から出湯管１１を介して供給されたお湯と、減圧弁１４で減圧され入水管１２を介して供給される水を、混合弁２２がミキシングを行う。混合弁２２でミキシングされる目標温度は、リモコン２３の温度調節スイッチ２４で設定される。そして、給湯温度検出器２５が目標温度になるように混合弁２２が駆動される。また、浴槽２１へ風呂湯張り給湯を行うときは、リモコン２３の風呂運転スイッチ２６の操作を行う。風呂運転スイッチ２６をオンすると、注湯弁２７が開くことで、設定温度のお湯が給湯され、リモコン２３の湯量設定スイッチ２８で設定された湯量に到達したことを湯張量検出器２９が検出すると風呂湯張り給湯は停止する。   In general, a hot water storage type water heater is a night heat storage type water heater that uses cheap late-night power, and boils the entire amount of hot water in the tank 10 at night. Therefore, the user uses the hot water boiled at night for hot water supply in the daytime. When the user performs hot water supply of any one of the currant 19, the shower 20, and the bathtub 21, the hot water supplied from the tank 10 through the hot water outlet pipe 11 and the pressure reducing valve 14 are supplied and supplied through the water inlet pipe 12. The mixing valve 22 mixes the water. A target temperature to be mixed by the mixing valve 22 is set by a temperature adjustment switch 24 of the remote controller 23. Then, the mixing valve 22 is driven so that the hot water supply temperature detector 25 reaches the target temperature. In addition, when bath water is supplied to the bathtub 21, the bath operation switch 26 of the remote controller 23 is operated. When the bath operation switch 26 is turned on, the hot water supply valve 27 is opened to supply hot water at the set temperature, and the hot water amount detector 29 detects that the hot water amount set by the hot water amount setting switch 28 of the remote controller 23 has been reached. Then, the hot water supply with bath water stops.

次に、図２の制御フローを併用しながら説明していく。   Next, a description will be given while also using the control flow of FIG.

使用者がカラン１９、シャワー２０で給湯を行うと、タンク１０内に貯湯されたお湯は減少していく。タンク１０の貯湯容量は有限であるから、風呂運転スイッチ２６の操作によって、風呂湯張り給湯が開始されたときには、タンク１０内に残っている残湯量では湯切れしてしまう可能性があり、昼間にタンク１０の湯水を沸き上げる必要がある。そこで、まず、使用者が風呂運転スイッチ２６の操作を行ったかどうかの判定を行う（ステップ１）。   When the user supplies hot water with the currant 19 and the shower 20, the hot water stored in the tank 10 decreases. Since the hot water storage capacity of the tank 10 is limited, when the bath hot water supply is started by the operation of the bath operation switch 26, the remaining hot water remaining in the tank 10 may run out. It is necessary to boil the hot water in the tank 10. Therefore, first, it is determined whether or not the user has operated the bath operation switch 26 (step 1).

ステップ２において、風呂湯張り給湯に必要な風呂必要湯量が決定される。風呂必要湯量は湯量設定スイッチ２８によって決定され、例えば、４０Ｌから５００Ｌまでの湯量を任意に選択できるものである。また、入浴中には、浴槽２１の湯量が減れば足し湯が行われる場合や、シャワーを浴びる場合があり、湯張り後もタンク１０にはお湯が必要となる。そこで、湯量設定スイッチ２８によって決定された湯量に、湯張り後に必要な所定の湯量を加算することで、湯切れすることのない十分な湯量を風呂必要湯量として決定しても良い。   In step 2, the required amount of hot water required for bath water supply is determined. The amount of hot water required for the bath is determined by the hot water amount setting switch 28. For example, the amount of hot water from 40L to 500L can be arbitrarily selected. In addition, during bathing, if the amount of hot water in the bathtub 21 is reduced, additional hot water may be used or a shower may be taken, and hot water is required for the tank 10 even after filling. Therefore, a sufficient amount of hot water that does not run out of hot water may be determined as the amount of hot water required for bathing by adding a predetermined amount of hot water required after filling to the amount of hot water determined by the hot water amount setting switch 28.

ステップ３において、風呂湯張り給湯が開始されれば、次に現在のタンク１０内の残湯量を検出する。タンク１０には、下部から上部の水温を検出する複数の残湯温度検出器３０ａ、３０ｂ、３０ｃ、３０ｄが配置されている。残湯温度検出器３０ａ、３０ｂ、３０ｃ、３０ｄは、検出温度が例えば６０℃以上の時はその設置位置までお湯が有り、４５℃を下回った時点でお湯が無いと判定する。４５℃と６０℃とを判断温度とすることで判定のチャタリングを防止していて、一度６０℃以上を上回ってお湯が有ると判断されると、４５℃を下回るまでは、お湯が有ると判定し続ける。   In step 3, if bath hot water supply is started, the current amount of hot water in the tank 10 is detected next. The tank 10 is provided with a plurality of remaining hot water temperature detectors 30a, 30b, 30c, and 30d that detect the water temperature of the upper portion from the lower portion. The remaining hot water temperature detectors 30a, 30b, 30c, and 30d determine that hot water is present up to the installation position when the detected temperature is 60 ° C. or higher, for example, and no hot water is present when the temperature falls below 45 ° C. Chattering of judgment is prevented by setting 45 ° C and 60 ° C as judgment temperatures, and once it is judged that there is hot water above 60 ° C or more, it is judged that there is hot water until it falls below 45 ° C Keep doing.

ステップ４において、風呂必要湯量と、タンク１０の残湯量との熱量の比較を行う。タンク１０に貯湯されているお湯の温度と、風呂湯張り給湯に必要な温度は異なり、そのままの湯量を比較することはできないので、熱量比較を行うことになる。まず、出湯管１１に配置された出湯温度検出器３１で検出した出湯温度と、入水管１２に配置された入水温度検知器３２で検出した入水温度と、給湯温度検出器２５で検出したミキシング後の給湯温度で混合比を求める。そして、風呂必要湯量と混合比を乗算すれば、タンク１０の残湯温度と比較することができる。例えば、出湯温度が９０℃、入水温度が１５℃、給湯温度が４０℃、風呂必要湯量が２５０Ｌとすると、混合比は約３３％となり、タンク１０に必要な残湯量は約８３Ｌとなる。このとき、残湯温度検出器３０ａがタンク１０の上部より５０Ｌの位置に配置され、残湯温度検出器３０ｂが１００Ｌ位置、残湯温度検出器３０ｃが１５０Ｌ位置、残湯温度検出器３０ｄが２００Ｌ位置に配置されていたとする。熱量換算結果の約８３Ｌより多めの１００Ｌ位置に配置されている残湯温度検出器３０ｂが、お湯有りを検出していれば、タンクには十分な残湯量があると判断され、お湯無しを検出していれば、このままでは湯切れに至ると判定される。   In step 4, the amount of heat required for the bath is compared with the amount of hot water remaining in the tank 10. Since the temperature of the hot water stored in the tank 10 is different from the temperature required for the hot water supply to the bath hot water, it is not possible to compare the amount of hot water as it is, so the heat amount is compared. First, the hot water temperature detected by the hot water temperature detector 31 arranged in the hot water pipe 11, the incoming water temperature detected by the incoming water temperature detector 32 arranged in the incoming water pipe 12, and after mixing detected by the hot water temperature detector 25. The mixing ratio is obtained at the hot water supply temperature. And if the amount of hot water required for the bath is multiplied by the mixing ratio, the remaining hot water temperature in the tank 10 can be compared. For example, if the temperature of the hot water is 90 ° C., the temperature of the incoming water is 15 ° C., the temperature of the hot water supply is 40 ° C., and the amount of hot water required for the bath is 250 L, the mixing ratio is about 33% and the remaining hot water required for the tank 10 is about 83 L. At this time, the remaining hot water temperature detector 30a is arranged at a position of 50L from the upper part of the tank 10, the remaining hot water temperature detector 30b is at the 100L position, the remaining hot water temperature detector 30c is at the 150L position, and the remaining hot water temperature detector 30d is 200L. Suppose that it was placed at a position. If the remaining hot water temperature detector 30b arranged at the position of 100L, which is larger than about 83L of the calorie conversion result, detects the presence of hot water, it is determined that there is sufficient remaining hot water in the tank, and no hot water is detected. If so, it is determined that the hot water will run out as it is.

なお、出湯温度の検出はタンクの上部に取り付けられている残湯温度検出器３０ａで行い、入水温度の検出はタンクの下部に取り付けられている残湯温度検出器３０ｄで行っても良い。この場合の出湯温度の検出は、残湯温度検出器３０ａの検出温度をそのまま適用するが、タンク１０の残湯量が残湯温度検出器３０ａの配置位置を下回ってしまうと、正確な温度検出ができなくなるので、例えば検出温度が６０℃を下回っていた場合は、６０℃と判定させて演算する。また、入水温度の検出では、タンク１０全量がお湯であった場合は検出することができないので、例えば、残湯温度検出器３０ｄの一つ上に配置された残湯温度検出器３０ｃが、お湯無しと判定されている間の検出温度を入水温度として確定させ、残湯温度検出器３０ｃがお湯有りと判定すると、それ以前に確定していた検出温度を入水温度として保持させておき演算に用いる。   It should be noted that the tapping temperature may be detected by the remaining hot water temperature detector 30a attached to the upper part of the tank, and the incoming water temperature may be detected by the remaining hot water temperature detector 30d attached to the lower part of the tank. The detection of the hot water temperature in this case applies the detection temperature of the remaining hot water temperature detector 30a as it is, but if the amount of remaining hot water in the tank 10 falls below the arrangement position of the remaining hot water temperature detector 30a, accurate temperature detection is possible. For example, if the detected temperature is lower than 60 ° C., it is determined that the detected temperature is 60 ° C. In addition, since the detection of the incoming water temperature cannot be performed when the entire amount of the tank 10 is hot water, for example, the remaining hot water temperature detector 30c disposed on one of the remaining hot water temperature detector 30d is provided with hot water. When the remaining hot water temperature detector 30c determines that there is hot water, the detected temperature while it is determined that there is no water is determined as the incoming water temperature. .

ステップ５において、熱量の比較の結果湯切れに至ると判定されると、タンク１０の湯水の沸き上げを行う。ステップ４の例で説明すると、算出されたタンク１０に必要な残湯量が約８３Ｌであった場合、１００Ｌ位置に配置されている残湯温度検出器３０ｂがお湯有りと検出するまで沸き上げを行う。なお、残湯温度検出器３０ｂがお湯有りを検出する前に、湯張り給湯が終了した場合は、その時点で沸き上げを終了しても良い。   In step 5, if it is determined that the hot water runs out as a result of the comparison of the heat amounts, the hot water in the tank 10 is boiled. In the example of Step 4, when the calculated amount of remaining hot water required for the tank 10 is about 83L, boiling is performed until the remaining hot water temperature detector 30b arranged at the 100L position detects that hot water is present. . If the hot water supply is completed before the remaining hot water temperature detector 30b detects the presence of hot water, the boiling may be terminated at that time.

ステップ６において、熱量の比較の結果湯切れには至らないと判定された場合でも、風呂必要湯量の再決定を行う。風呂必要湯量の再決定は、湯張量検出器２９がカウントしている浴槽２１への注湯量を、ステップ２で決定された風呂必要湯量から減算することで決定する。風呂湯張り給湯中常に風呂必要湯量の再決定を行うことで、同時に洗面所や台所で給湯が行われたことによるタンク１０の残湯量減少を検知することができ、ステップ４にて、このままでは湯切れに至ると判定されると、ステップ５で沸き上げを行うことができる。   Even if it is determined in step 6 that the hot water does not run out as a result of the heat amount comparison, the amount of hot water required for the bath is determined again. The redetermination of the required amount of hot water for the bath is determined by subtracting the amount of hot water poured into the bathtub 21 counted by the hot water amount detector 29 from the amount of required hot water for the bath determined in step 2. By constantly re-determining the amount of hot water required during bath water supply, it is possible to detect a decrease in the amount of hot water remaining in the tank 10 due to hot water being supplied at the bathroom or kitchen at the same time. If it is determined that the hot water has run out, boiling can be performed in step 5.

本実施例の貯湯式給湯器は、前回の浴槽への湯張り量を記憶する湯張量記憶部３３を備えている。湯張量記憶部３３は、風呂運転スイッチ２６操作で風呂湯張り給湯を開始してから、湯量設定スイッチ２８で設定された湯量に到達するまで、実際に湯張量検出器２９がカウントした湯量を風呂必要湯量として記憶する。また、例えば過去７日間の湯量を比較し、その中の最大湯量を風呂必要湯量として選択する。そして、足し湯やシャワーを加味した湯量で、タンク１０の残湯湯量との熱量比較を行う。このように、過去の所定日数期間内の最大湯量で熱量比較を行うことで、生活パターンの変動における湯切れを防止することができる。   The hot water storage type water heater of the present embodiment includes a hot water storage unit 33 for storing the previous hot water filling amount to the bathtub. The hot water amount storage unit 33 starts the bath hot water supply by operating the bath operation switch 26 and then reaches the hot water amount set by the hot water setting switch 28 until the hot water amount detector 29 actually counts the hot water amount. Is stored as the amount of hot water required for the bath. For example, the amount of hot water for the past seven days is compared, and the maximum amount of hot water among them is selected as the amount of hot water required for the bath. Then, the amount of hot water with added hot water or shower is compared with the amount of hot water remaining in the tank 10. As described above, by comparing the amount of heat with the maximum amount of hot water within a predetermined number of days in the past, it is possible to prevent running out of hot water due to changes in lifestyle patterns.

以上のように、本発明にかかる貯湯式給湯器は、風呂湯張り給湯時に湯切れすると判定されるとタンクの沸き上げを行う機器として、電気温水器やヒートポンプ給湯機等の用途に適用できる。   As described above, the hot water storage type water heater according to the present invention can be applied to uses such as an electric water heater and a heat pump water heater as a device for boiling up a tank when it is determined that the hot water runs out during bath hot water supply.

本発明の実施の形態１における貯湯式給湯器の構成図The block diagram of the hot water storage type water heater in Embodiment 1 of this invention 本発明の実施の形態１における貯湯式給湯器のフローチャートFlowchart of hot water storage type water heater in Embodiment 1 of the present invention 従来の貯湯式給湯器の構成図Configuration diagram of a conventional hot water heater

符号の説明Explanation of symbols

１０ タンク
１８ 熱源機
２３ リモコン
２６ 風呂運転スイッチ
２８ 湯量設定スイッチ
２９ 湯張量検出器
３０ａ 残湯温度検出器
３０ｂ 残湯温度検出器
３０ｃ 残湯温度検出器
３０ｄ 残湯温度検出器
３３ 湯張量記憶部 DESCRIPTION OF SYMBOLS 10 Tank 18 Heat source machine 23 Remote control 26 Bath operation switch 28 Hot water amount setting switch 29 Hot water amount detector 30a Remaining hot water temperature detector 30b Remaining hot water temperature detector 30c Remaining hot water temperature detector 30d Remaining hot water temperature detector 33 Hot water amount memory 33 Part

Claims (5)

湯水を貯湯するタンクと、前記タンク内の湯水を沸き上げる熱源機と、前記タンク内の残湯量を検出する残湯温度検出器と、浴槽への湯張り運転をオン／オフ制御する風呂運転スイッチと浴槽への風呂必要湯量を設定する湯量設定スイッチを有したリモコンとを備え、浴槽への湯張り運転を開始したときに前記残湯温度検出器で検出した前記タンク内の湯量が前記リモコンの湯量設定スイッチで設定された風呂必要湯量より少ない場合は前記熱源機により前記タンク内の湯水の沸き上げを行う貯湯式給湯器。 A tank for storing hot water, a heat source device for boiling the hot water in the tank, a remaining hot water temperature detector for detecting the amount of remaining hot water in the tank, and a bath operation switch for controlling on / off of hot water filling operation to the bathtub And a remote control having a hot water setting switch for setting the required hot water amount to the bathtub, and the amount of hot water in the tank detected by the remaining hot water temperature detector when the hot water filling operation to the bathtub is started is A hot water storage type water heater that heats up the hot water in the tank by the heat source device when the amount of hot water required for the bath is less than the hot water setting switch. 風呂必要湯量は、浴槽の湯張りに必要な湯量に、湯張り後の浴槽の保温や足し湯、及びシャワーに必要な湯量を加算したものとする請求項１記載の貯湯式給湯器。 The hot water storage type hot water heater according to claim 1, wherein the amount of hot water required for bathing is obtained by adding the amount of hot water required for hot water filling of a bathtub to the amount of hot water required for hot water bathing or adding water to the bathtub after hot water filling, and the amount of hot water required for a shower. 湯水を貯湯するタンクと、前記タンク内の湯水を沸き上げる熱源機と、前記タンク内の残湯量を検出する残湯温度検出器と、浴槽への湯張り運転をオン／オフ制御する風呂運転スイッチと浴槽への風呂必要湯量を設定する湯量設定スイッチを有したリモコンとを備え、浴槽への湯張り量を検出する湯張量検出器と、前回の浴槽への湯張り量を風呂必要湯量として記憶する湯張量記憶部を備え、浴槽への風呂湯張り給湯を開始したときに、前記残湯温度検出器が検出した前記タンク内の湯量が前記湯張量記憶部が記憶している風呂必要湯量より少ない場合は、前記熱源機により前記タンク内の湯水の沸き上げを行う貯湯式給湯器。 A tank for storing hot water, a heat source device for boiling the hot water in the tank, a remaining hot water temperature detector for detecting the amount of remaining hot water in the tank, and a bath operation switch for controlling on / off of hot water filling operation to the bathtub And a remote control with a hot water setting switch for setting the required hot water amount for the bathtub, and a hot water amount detector for detecting the hot water amount for the bathtub and the previous hot water amount for the bathtub as the required hot water amount for the bath A bath in which the hot water amount storage unit stores the hot water amount in the tank detected by the remaining hot water temperature detector when the hot water supply to the bathtub is started. When the amount of hot water is less than the required amount of hot water, a hot water storage type water heater that boils hot water in the tank by the heat source device. 湯水を貯湯するタンクと、前記タンク内の湯水を沸き上げる熱源機と、前記タンク内の残湯量を検出する残湯温度検出器と、浴槽への湯張り運転をオン／オフ制御する風呂運転スイッチと浴槽への風呂必要湯量を設定する湯量設定スイッチを有したリモコンとを備え、浴槽への風呂湯張り給湯を開始してから前記湯張量検出器で浴槽へ注湯されている湯量を積算して現在注湯量とし、前記残湯温度検出器が検出した前記タンク内の湯量との熱量が風呂必要湯量から前記現在注湯量を差し引いた湯量より少ない場合は、前記熱源機により前記タンク内の湯水の沸き上げを行う貯湯式給湯器。 A tank for storing hot water, a heat source device for boiling the hot water in the tank, a remaining hot water temperature detector for detecting the amount of remaining hot water in the tank, and a bath operation switch for controlling on / off of hot water filling operation to the bathtub And a remote control with a hot water setting switch that sets the required hot water amount for the bathtub, and after the hot water supply to the bathtub is started, the amount of hot water poured into the bathtub is integrated with the hot water detector If the amount of heat with the amount of hot water in the tank detected by the remaining hot water temperature detector is less than the amount of hot water obtained by subtracting the amount of hot water to be poured from the amount of hot water required for the bath, the heat source device Hot water storage water heater that boils hot water. 過去の所定日数期間内の最大湯量を風呂必要湯量として記憶する請求項３記載の貯湯式給湯器。 The hot water storage type water heater according to claim 3, wherein the maximum amount of hot water within a predetermined number of days in the past is stored as the amount of hot water required for the bath.
JP2004315454A 2004-10-29 2004-10-29 Storage type hot water heater Pending JP2006125746A (en)

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JP2015064167A (en) * 2013-09-26 2015-04-09 パナソニック株式会社 Heat pump water heater
JP2017096599A (en) * 2015-11-27 2017-06-01 株式会社ノーリツ Heat pump type water heater
JP2018155425A (en) * 2017-03-16 2018-10-04 大和ハウス工業株式会社 Hot water supply system

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