JP7649956B2 - Storage water heater - Google Patents
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- JP7649956B2 JP7649956B2 JP2022043476A JP2022043476A JP7649956B2 JP 7649956 B2 JP7649956 B2 JP 7649956B2 JP 2022043476 A JP2022043476 A JP 2022043476A JP 2022043476 A JP2022043476 A JP 2022043476A JP 7649956 B2 JP7649956 B2 JP 7649956B2
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Description
本発明は、沸き上げ運転モードを有する貯湯式給湯機に関する。 The present invention relates to a storage-type hot water heater that has a boiling operation mode.
特許文献１は、貯湯タンクと、貯湯タンク内の湯水を加熱する加熱装置と、制御装置と、を備え、制御装置は、加熱装置が貯湯タンク内の湯水を加熱する、沸き上げ運転モードを有し、沸き上げ運転モードは、加熱装置が他の機器が発電する電力を活用して、昼間時間帯に沸き上げ運転を実行する昼間時間帯モードを含み、使用湯量のみならず、電力の需要バランスを考慮して沸き上げ運転が行える貯湯式給湯機を開示している。 Patent Document 1 discloses a storage-type hot water heater that includes a hot water storage tank, a heating device that heats the hot water in the hot water storage tank, and a control device, and the control device has a boiling operation mode in which the heating device heats the hot water in the hot water storage tank. The boiling operation mode includes a daytime mode in which the heating device uses electricity generated by other equipment to perform boiling operation during daytime hours, and that can perform boiling operation taking into account not only the amount of hot water used but also the balance of electricity demand.
特許文献１によれば、昼間時間帯モードで設定された湯量を引いて夜間時間帯モードで沸き上げる湯量を決定する。昼間時間帯モードで設定された湯量が、使用者が実際に使用した湯量より多く設定された場合には、昼間時間帯モードでは、設定された湯量ではなく、使用湯量履歴に基づいて決定された湯量未満とすることで、夜間に必要最小量の湯量を沸き上げることとなり、朝から昼間までの多少の突発的な使用者の使用湯量にも湯切れすることなく対応できる。しかし、昼間時間帯モードで設定された沸き上げ時間が、１日に必要とする湯量から算出した沸き上げ時間より短い場合、使用者が設定した時間を優先して必要な沸き上げ時間よりも多く沸き上げるため省エネ性を低下させてしまう。 According to Patent Document 1, the amount of water to be boiled in the nighttime mode is determined by subtracting the amount of water set in the daytime mode. If the amount of water set in the daytime mode is set to more than the amount of water actually used by the user, the daytime mode will boil the minimum amount of water required at night by setting the amount of water less than the set amount of water, rather than the amount determined based on the history of the amount of water used, and this allows the water to be boiled without running out of hot water even if the user uses a little unexpectedly from morning to daytime. However, if the boiling time set in the daytime mode is shorter than the boiling time calculated from the amount of water needed in a day, the time set by the user is prioritized and the water is boiled for longer than the necessary boiling time, which reduces energy efficiency.
そこで本発明は、夜間時間帯モードにおける夜間沸き上げ運転を、朝方時間帯での使用湯量から設定することで、朝方時間帯での湯切れを防止できるとともに省エネ性能を向上させることができる貯湯式給湯機を提供することを目的とする。 The present invention aims to provide a storage-type hot water heater that can prevent hot water shortages in the morning hours and improve energy-saving performance by setting the nighttime heating operation in the nighttime mode based on the amount of hot water used in the morning hours.
請求項１記載の本発明の貯湯式給湯機は、貯湯タンク１０と、前記貯湯タンク１０内の湯水を加熱する加熱装置２０と、制御装置３０と、前記貯湯タンク１０内の残湯温度を検出する残湯温度検出手段１８ａと、前記貯湯タンク１０の底部に導入し又は前記貯湯タンク１０の前記底部から導出される前記湯水の入水温度を検出する入水温度検出手段１８ｃとを備え、前記制御装置３０は、前記加熱装置２０が前記貯湯タンク１０内の前記湯水を加熱する、沸き上げ運転モード３１を有し、前記沸き上げ運転モード３１は、昼間時間帯に沸き上げ運転を実行する昼間時間帯モード３１Ａと、夜間時間帯に夜間沸き上げ運転を実行する夜間時間帯モード３１Ｂとを有し、前記昼間時間帯モード３１Ａで沸き上げる昼間沸き上げ湯量を、１日の総沸き上げ湯量に対して５０％以上とする貯湯式給湯機であって、前記夜間時間帯以降で前記昼間時間帯以前に朝方時間帯を設定し、前記制御装置３０は、前記朝方時間帯の開始時刻には、あらかじめ設定された朝方時間帯設定湯量を確保するように、前記夜間時間帯モード３１Ｂで前記夜間沸き上げ運転を実行し、前記制御装置３０は、前記夜間時間帯に、前記残湯温度検出手段１８ａからの前記残湯温度、及び前記入水温度検出手段１８ｃからの前記入水温度を検出し、検出される前記残湯温度及び前記入水温度を用いて前記夜間沸き上げ運転を実行するか否かを判断し、前記夜間沸き上げ運転を実行すると判断すると、前記夜間時間帯に前記加熱装置２０を動作させることを特徴とする。
請求項２記載の本発明の貯湯式給湯機は、請求項１に記載の貯湯式給湯機において、前記貯湯タンク１０の前記底部の前記湯水を、前記加熱装置２０で沸き上げて前記貯湯タンク１０の上部から前記貯湯タンク１０に導入する沸き上げ配管１１と、前記加熱装置２０で沸き上げられた前記湯水の沸き上げ温度を検出する沸き上げ温度検出手段１８ｄと、前記加熱装置２０に通水する循環ポンプ１６とを備え、前記制御装置３０は、前記夜間時間帯に、前記入水温度検出手段１８ｃからの前記入水温度、前記沸き上げ温度検出手段１８ｄからの前記沸き上げ温度、及び前記循環ポンプ１６での通水量を検出し、検出される前記入水温度、前記沸き上げ温度、及び前記通水量を用いて前記夜間沸き上げ運転の停止タイミングを判断し、判断された前記停止タイミングで、前記夜間時間帯での前記加熱装置２０の動作を停止することを特徴とする。
請求項３記載の本発明の貯湯式給湯機は、請求項１または請求項２に記載の貯湯式給湯機において、前記朝方時間帯設定湯量を、使用履歴に基づいて決定することを特徴とする。
請求項４記載の本発明の貯湯式給湯機は、請求項１に記載の貯湯式給湯機において、前記夜間沸き上げ運転を実行するか否かの判断を、前記加熱装置２０の停止時に常時行うことを特徴とする。
請求項５記載の本発明の貯湯式給湯機は、請求項２に記載の貯湯式給湯機において、前記停止タイミングが前記夜間時間帯以降と判断されると、前記夜間時間帯の終了時刻で前記加熱装置２０の前記動作を停止することを特徴とする。
The hot water storage type hot water heater of the present invention described in claim 1 comprises a hot water storage tank 10, a heating device 20 for heating hot water in the hot water storage tank 10, a control device 30, a remaining hot water temperature detection means 18a for detecting the temperature of remaining hot water in the hot water storage tank 10, and an inlet water temperature detection means 18c for detecting the inlet water temperature of the hot water introduced into the bottom of the hot water storage tank 10 or discharged from the bottom of the hot water storage tank 10. The control device 30 has a boiling operation mode 31 in which the heating device 20 heats the hot water in the hot water storage tank 10, and the boiling operation mode 31 has a daytime time zone mode 31A for performing a boiling operation during daytime hours and a nighttime time zone mode 31B for performing a nighttime boiling operation during nighttime hours, and the daytime boiling water boiled in the daytime time zone mode 31A is a daytime boiling water temperature detection means. This is a storage type water heater that sets the amount of hot water to be heated to 50% or more of the total amount of hot water to be heated in a day, and a morning time period is set after the nighttime period and before the daytime period, and the control device 30 executes the nighttime heating operation in the nighttime time period mode 31B so as to ensure the predetermined morning time period set amount of hot water at the start time of the morning time period, and the control device 30 detects the remaining hot water temperature from the remaining hot water temperature detection means 18a and the inlet water temperature from the inlet water temperature detection means 18c during the nighttime period, and uses the detected remaining hot water temperature and inlet water temperature to determine whether or not to perform the nighttime heating operation, and if it determines that the nighttime heating operation should be performed, operates the heating device 20 during the nighttime period.
The hot water storage type water heater of the present invention described in claim 2 is a hot water storage type water heater described in claim 1, which is equipped with a boiling pipe 11 that boils the hot water at the bottom of the hot water storage tank 10 using the heating device 20 and introduces it into the hot water storage tank 10 from the top of the hot water storage tank 10, a boiling temperature detection means 18d that detects the boiling temperature of the hot water boiled by the heating device 20, and a circulation pump 16 that passes water through the heating device 20, and the control device 30 detects the inlet water temperature from the inlet water temperature detection means 18c, the boiling temperature from the boiling temperature detection means 18d, and the amount of water passing through the circulation pump 16 during the nighttime hours, determines the timing to stop the nighttime boiling operation using the detected inlet water temperature, the boiling temperature, and the amount of water passing, and stops the operation of the heating device 20 during the nighttime hours at the determined stop timing.
The storage type hot water heater of the present invention as set forth in claim 3 is the storage type hot water heater as set forth in claim 1 or 2, characterized in that the set hot water quantity for the morning time slot is determined based on usage history.
The storage type water heater of the present invention described in claim 4 is characterized in that, in the storage type water heater described in claim 1, the decision as to whether or not to perform the night-time heating operation is made constantly when the heating device 20 is stopped.
The storage type water heater of the present invention as described in claim 5 is characterized in that, in the storage type water heater as described in claim 2, when it is determined that the stop timing is after the nighttime period, the operation of the heating device 20 is stopped at the end of the nighttime period.
本発明によれば、夜間時間帯モードにおける夜間沸き上げ運転を、朝方時間帯での使用湯量から設定することで、朝方時間帯での湯切れを防止できるとともに省エネ性能を向上させることができる。 According to the present invention, by setting the nighttime heating operation in the nighttime mode based on the amount of hot water used in the morning hours, it is possible to prevent hot water shortages in the morning hours and improve energy-saving performance.
本発明の第１の実施の形態による貯湯式給湯機は、夜間時間帯以降で昼間時間帯以前に朝方時間帯を設定し、制御装置は、朝方時間帯の開始時刻にはあらかじめ設定された朝方時間帯設定湯量を確保するように、夜間時間帯モードで夜間沸き上げ運転を実行するものである。本実施の形態によれば、夜間時間帯モードにおける夜間沸き上げ運転を、朝方時間帯での使用湯量から設定することで、朝方時間帯での湯切れを防止できるとともに省エネ性能を向上させることができる。
また、本発明の第１の実施の形態による貯湯式給湯機は、貯湯タンク内の残湯温度を検出する残湯温度検出手段と、貯湯タンクの底部に導入し又は貯湯タンクの底部から導出される湯水の入水温度を検出する入水温度検出手段とを備え、制御装置は、夜間時間帯に、残湯温度検出手段からの残湯温度、及び入水温度検出手段からの入水温度を検出し、検出される残湯温度及び入水温度を用いて夜間沸き上げ運転を実行するか否かを判断し、夜間沸き上げ運転を実行すると判断すると、夜間時間帯に加熱装置を動作させるものである。本実施の形態によれば、夜間時間帯に検出を行って夜間沸き上げ運転を実行するか否かの判断を行うことで、朝方時間帯での湯切れ防止を効率的に行える。
The hot water storage type hot water heater according to the first embodiment of the present invention sets a morning time zone after the night time zone and before the day time zone, and the control device executes nighttime heating operation in the night time zone mode so as to ensure the preset amount of hot water for the morning time zone at the start time of the morning time zone. According to this embodiment, by setting the nighttime heating operation in the night time zone mode based on the amount of hot water used in the morning time zone, it is possible to prevent hot water shortages in the morning time zone and improve energy saving performance.
The hot water storage type hot water heater according to the first embodiment of the present invention includes a residual hot water temperature detection means for detecting the temperature of the remaining hot water in the hot water storage tank, and an inlet water temperature detection means for detecting the inlet water temperature of the hot water introduced into the bottom of the hot water storage tank or drawn out from the bottom of the hot water storage tank, and the control device detects the residual hot water temperature from the residual hot water temperature detection means and the inlet water temperature from the inlet water temperature detection means during the nighttime hours, judges whether or not to perform nighttime boiling operation using the detected residual hot water temperature and inlet water temperature, and operates the heating device during the nighttime hours when it is judged that nighttime boiling operation should be performed. According to this embodiment, by performing detection during the nighttime hours and judging whether or not to perform nighttime boiling operation, it is possible to efficiently prevent hot water shortage during the morning hours.
本発明の第２の実施の形態は、第１の実施の形態による貯湯式給湯機において、貯湯タンクの底部の湯水を、加熱装置で沸き上げて貯湯タンクの上部から貯湯タンクに導入する沸き上げ配管と、加熱装置で沸き上げられた湯水の沸き上げ温度を検出する沸き上げ温度検出手段と、加熱装置に通水する循環ポンプとを備え、制御装置は、夜間時間帯に、入水温度検出手段からの入水温度、沸き上げ温度検出手段からの沸き上げ温度、及び循環ポンプでの通水量を検出し、検出される入水温度、沸き上げ温度、及び通水量を用いて夜間沸き上げ運転の停止タイミングを判断し、判断された停止タイミングで、夜間時間帯での加熱装置の動作を停止するものである。本実施の形態によれば、夜間時間帯に検出を行って夜間沸き上げ運転の停止タイミングの判断を行うことで、朝方時間帯での湯切れ防止を効率的に行える。 The second embodiment of the present invention is a hot water storage type hot water heater according to the first embodiment, which is provided with a boiling pipe that boils hot water at the bottom of the hot water storage tank with a heating device and introduces it into the hot water storage tank from the top of the hot water storage tank, a boiling temperature detection means that detects the boiling temperature of the hot water boiled by the heating device, and a circulation pump that passes water through the heating device, and the control device detects the inlet water temperature from the inlet water temperature detection means, the boiling temperature from the boiling temperature detection means, and the amount of water passing through the circulation pump during the nighttime hours, determines the timing to stop the nighttime boiling operation using the detected inlet water temperature, boiling temperature, and water passing amount, and stops the operation of the heating device during the nighttime hours at the determined stop timing. According to this embodiment, by performing detection during the nighttime hours and determining the timing to stop the nighttime boiling operation, it is possible to efficiently prevent hot water shortage during the morning hours.
本発明の第３の実施の形態は、第１または第２の実施の形態による貯湯式給湯機において、朝方時間帯設定湯量を、使用履歴に基づいて決定するものである。本実施の形態によれば、使用履歴に基づいて朝方時間帯設定湯量を決定することで、朝方時間帯での湯切れ防止を効率的に行える。 The third embodiment of the present invention is a storage type hot water heater according to the first or second embodiment, in which the amount of hot water set for the morning time slot is determined based on the usage history. According to this embodiment, by determining the amount of hot water set for the morning time slot based on the usage history, it is possible to efficiently prevent hot water from running out during the morning time slot.
本発明の第４の実施の形態は、第１の実施の形態による貯湯式給湯機において、夜間沸き上げ運転を実行するか否かの判断を、加熱装置の停止時に常時行うものである。本実施の形態によれば、朝方時間帯での湯切れ防止を効率的に行える。 The fourth embodiment of the present invention is a storage-type hot water heater according to the first embodiment, in which the decision as to whether or not to perform nighttime heating operation is made constantly when the heating device is stopped. This embodiment makes it possible to efficiently prevent hot water from running out in the morning hours.
本発明の第５の実施の形態は、第２の実施の形態による貯湯式給湯機において、停止タイミングが夜間時間帯以降と判断されると、夜間時間帯の終了時刻で加熱装置の動作を停止するものである。本実施の形態によれば、朝方時間帯にずれ込んだ沸き上げ運転を防止できる。 In the fifth embodiment of the present invention, in the storage type hot water heater according to the second embodiment, if it is determined that the stop timing is after the nighttime hours, the operation of the heating device is stopped at the end of the nighttime hours. This embodiment makes it possible to prevent the heating operation from being delayed into the morning hours.
以下、本発明の一実施例について図面を参照しながら説明する。
図１は本実施例による貯湯式給湯機の構成図である。
本実施例による貯湯式給湯機は、貯湯タンク１０と、貯湯タンク１０内の湯水を加熱する加熱装置２０と、加熱装置２０を制御する制御装置３０と、使用者が制御装置３０の設定条件を設定できる操作手段４０とを備えている。
An embodiment of the present invention will now be described with reference to the drawings.
FIG. 1 is a configuration diagram of a storage type hot water heater according to this embodiment.
The hot water storage type water heater of this embodiment comprises a hot water storage tank 10, a heating device 20 for heating the hot water in the hot water storage tank 10, a control device 30 for controlling the heating device 20, and an operating means 40 by which a user can set the setting conditions of the control device 30.
貯湯タンク１０の湯水は、貯湯タンク１０の底部から導出し、沸き上げ配管１１を通じて加熱装置２０に通水され、加熱装置２０で高温に沸き上げられた後に貯湯タンク１０の上部から導入され、貯湯タンク１０に貯湯される。高温に沸き上げられた貯湯タンク１０内の湯水は、給湯栓１２が開栓されると、混合弁１３によって給水配管１４からの給水と所定温度に混合されて給湯栓１２から給湯される。
給湯栓１２から給湯されることによって貯湯タンク１０内で不足する湯水は、貯湯タンク１０の底部に接続した給水配管１４から供給され、貯湯タンク１０内は常に湯水で満たされている。
貯湯タンク１０から加熱装置２０に至る沸き上げ配管１１には循環ポンプ１６を有しており、循環ポンプ１６が動作することで、貯湯タンク１０の湯水は、加熱装置２０に通水され、貯湯タンク１０に貯湯される。沸き上げ配管１１は、貯湯タンク１０の底部の湯水を加熱装置２０に導き、加熱装置２０で加熱された湯水を貯湯タンク１０の頂部に導いている。このように、貯湯タンク１０の底部の湯水を導出し、加熱された湯水を貯湯タンク１０の頂部に導くことで、貯湯タンク１０内には、高温層と低温層との間に混合層が形成される。
The hot water in the hot water storage tank 10 is drawn from the bottom of the hot water storage tank 10 and passed through the boiling pipe 11 to the heating device 20, where it is heated to a high temperature and then introduced from the top of the hot water storage tank 10 and stored in the hot water storage tank 10. When the hot water tap 12 is opened, the hot water in the hot water storage tank 10 that has been heated to a high temperature is mixed with water supplied from the water supply pipe 14 by the mixing valve 13 to a predetermined temperature and is supplied from the hot water tap 12.
When hot water is supplied from the hot water tap 12, any shortage in the hot water storage tank 10 is made by supplying it from a water supply pipe 14 connected to the bottom of the hot water storage tank 10, so that the hot water storage tank 10 is always filled with hot water.
The boiling pipe 11 leading from the hot water storage tank 10 to the heating device 20 has a circulation pump 16, and by operating the circulation pump 16, the hot water in the hot water storage tank 10 is passed through the heating device 20 and stored in the hot water storage tank 10. The boiling pipe 11 guides the hot water at the bottom of the hot water storage tank 10 to the heating device 20, and guides the hot water heated by the heating device 20 to the top of the hot water storage tank 10. In this way, by drawing out the hot water from the bottom of the hot water storage tank 10 and directing the heated hot water to the top of the hot water storage tank 10, a mixed layer is formed between the high temperature layer and the low temperature layer in the hot water storage tank 10.
貯湯タンク１０から給湯栓１２に至る給湯配管１５には、給湯栓１２に供給する湯量を検出する給湯流量検出手段１７を備えている。
貯湯タンク１０には複数の残湯温度検出手段１８ａを備え、貯湯タンク１０の下部に給水する給水配管１４又は貯湯タンク１０の下部には給水温度検出手段１８ｂを備え、貯湯タンク１０から循環ポンプ１６に至る沸き上げ配管１１には入水温度検出手段１８ｃを備え、加熱装置２０から貯湯タンク１０の頂部に至る沸き上げ配管１１には沸き上げ温度検出手段１８ｄを備えている。
残湯温度検出手段１８ａは、使用湯量に応じた残湯温度を検出するもので、使用湯量が貯留された状態で形成される混合層の位置に配置される。複数の残湯温度検出手段１８ａは、それぞれ高さを異ならせて配置する。
The hot water supply pipe 15 extending from the hot water storage tank 10 to the hot water tap 12 is provided with a hot water supply flow rate detection means 17 for detecting the amount of hot water supplied to the hot water tap 12 .
The hot water storage tank 10 is equipped with multiple remaining hot water temperature detection means 18a, the water supply pipe 14 that supplies water to the lower part of the hot water storage tank 10 or the lower part of the hot water storage tank 10 is equipped with a supply water temperature detection means 18b, the boiling pipe 11 leading from the hot water storage tank 10 to the circulation pump 16 is equipped with an inlet water temperature detection means 18c, and the boiling pipe 11 leading from the heating device 20 to the top of the hot water storage tank 10 is equipped with a boiling temperature detection means 18d.
The residual hot water temperature detection means 18a detects the residual hot water temperature according to the amount of hot water used, and is disposed at the position of the mixed layer formed when the amount of hot water used is stored. The multiple residual hot water temperature detection means 18a are disposed at different heights.
加熱装置２０には、圧縮機、放熱器、減圧器、及び蒸発器から構成されるヒートポンプ装置が適している。ヒートポンプ装置を加熱装置２０として用いる場合には、放熱器での放熱を加熱源として利用する。加熱装置２０をヒートポンプ装置とすることで、電力を有効に利用することができる。 A heat pump device consisting of a compressor, a radiator, a pressure reducer, and an evaporator is suitable for the heating device 20. When a heat pump device is used as the heating device 20, the heat dissipated by the radiator is used as the heat source. By using the heating device 20 as a heat pump device, electric power can be used efficiently.
制御装置３０は沸き上げ運転モード３１を有している。沸き上げ運転モード３１では、加熱装置２０が貯湯タンク１０内の湯水を加熱する沸き上げ運転を行う。沸き上げ運転モード３１として、昼間時間帯に沸き上げ運転を実行する昼間時間帯モード３１Ａと、夜間時間帯に沸き上げ運転を実行する夜間時間帯モード３１Ｂとを有している。
制御装置３０は、タイマー手段３２を有している。タイマー手段３２は時間を計時し、タイマー手段３２によって年月日及び時刻を判定できる。従って、昼間時間帯、夜間時間帯、及び朝方時間帯は、タイマー手段３２によって判定する。昼間時間帯、夜間時間帯及び朝方時間帯は、あらかじめ設定される他、操作手段４０での操作によって変更されるものであってもよい。例えば、昼間時間帯は９時から１６時までと、夜間時間帯は２３時から６時までと、朝方時間帯は６時から９時までと設定する。朝方時間帯は、夜間時間帯以降で昼間時間帯以前であれば設定でき、夜間時間帯の終了時刻と朝方時間帯の開始時刻は必ずしも一致しなくてもよく、朝方時間帯の終了時刻と昼間時間帯の開始時刻とは必ずしも一致しなくてもよい。
The control device 30 has a water heating operation mode 31. In the water heating operation mode 31, the heating device 20 performs a water heating operation to heat the hot water in the hot water storage tank 10. The water heating operation mode 31 has a daytime mode 31A in which the water heating operation is performed during daytime hours, and a nighttime mode 31B in which the water heating operation is performed during nighttime hours.
The control device 30 has a timer means 32. The timer means 32 measures time, and the timer means 32 can determine the date and time. Therefore, the daytime period, the nighttime period, and the morning period are determined by the timer means 32. The daytime period, the nighttime period, and the morning period may be set in advance, or may be changed by operating the operating means 40. For example, the daytime period is set from 9:00 to 16:00, the nighttime period is set from 23:00 to 6:00, and the morning period is set from 6:00 to 9:00. The morning period can be set as long as it is after the nighttime period and before the daytime period, and the end time of the nighttime period and the start time of the morning period do not necessarily have to match, and the end time of the morning period and the start time of the daytime period do not necessarily have to match.
制御装置３０は、使用湯量記憶手段３３Ａと、朝方時間帯設定湯量記憶手段３３Ｂと、設定条件記憶手段３３Ｃとを有している。
使用湯量記憶手段３３Ａは、給湯流量検出手段１７で検出される湯量を、タイマー手段３２で計時される時刻とともに記憶する。使用湯量記憶手段３３Ａには、１日分、１週間分、１ヶ月分、及び１年分のような所定期間における時間帯別の湯量を、使用湯量履歴として記憶している。
朝方時間帯設定湯量記憶手段３３Ｂは、設定されている朝方時間帯の給湯流量検出手段１７で検出される湯量を記憶する。朝方時間帯設定湯量記憶手段３３Ｂには、１日分、１週間分、１ヶ月分、及び１年分のような所定期間における朝方時間帯の湯量を、使用湯量履歴として記憶している。
設定条件記憶手段３３Ｃは、昼間時間帯モード３１Ａが実行される、昼間運転開始時刻、昼間運転終了時刻、又は昼間運転実行時間のうち、少なくともいずれかの設定条件が記憶される。これらの設定条件は操作手段４０によって設定される。
The control device 30 has a hot water usage amount storage means 33A, a morning time slot set hot water amount storage means 33B, and a set condition storage means 33C.
The hot water usage storage means 33A stores the amount of hot water detected by the hot water supply flow rate detection means 17 together with the time measured by the timer means 32. The hot water usage storage means 33A stores the amount of hot water by time period for a specified period such as one day, one week, one month, and one year as a hot water usage history.
The morning time slot set hot water amount storage means 33B stores the amount of hot water detected by the hot water supply flow rate detection means 17 for the set morning time slot. The morning time slot set hot water amount storage means 33B stores the amount of hot water in the morning time slot for a specified period such as one day, one week, one month, or one year as hot water usage history.
The set condition storage means 33C stores at least one of the set conditions of the daytime operation start time, the daytime operation end time, and the daytime operation execution time, for which the daytime time slot mode 31A is executed. These set conditions are set by the operation means 40.
操作手段４０では、昼間設定運転時間が、あらかじめ設定された最低運転時間未満となる設定を行えないように設定条件を制限している。例えば、制御装置３０において、あらかじめ最低運転時間を４時間と設定している場合には、使用者が昼間運転実行時間を４時間以上に設定することはできるが、使用者が４時間未満に設定することを受け付けない。昼間運転開始時刻と昼間運転終了時刻についても同様であり、昼間運転開始時刻を９時とした場合には、昼間運転実行時間が４時間未満となる時刻、例えば昼間運転終了時刻を１２時に設定することを受け付けない。使用者は、昼間運転開始時刻を９時とした場合には、１３時以降の時刻を昼間運転終了時刻として設定することができる。
最低運転時間は、昼間時間帯モード３１Ａで沸き上げる昼間沸き上げ湯量が、１日の総沸き上げ湯量に対して５０％以上となるように決定している。
なお、操作手段４０では、昼間運転開始時刻と昼間運転終了時刻とを使用者が設定できることが好ましいが、昼間運転開始時刻だけを使用者が設定する場合には最低運転時間によって昼間運転終了時刻が設定され、昼間運転終了時刻だけを使用者が設定する場合には最低運転時間によって昼間運転開始時刻が設定されるものであってもよい。
The operation means 40 restricts the setting conditions so that the daytime set operation time cannot be set to less than the preset minimum operation time. For example, if the control device 30 has preset the minimum operation time to four hours, the user can set the daytime operation execution time to four hours or more, but the user cannot set it to less than four hours. The same applies to the daytime operation start time and daytime operation end time. If the daytime operation start time is set to 9:00, the user cannot set the daytime operation execution time to a time less than four hours, for example, the daytime operation end time to 12:00. If the daytime operation start time is set to 9:00, the user can set the daytime operation end time to a time after 13:00.
The minimum operation time is determined so that the amount of hot water boiled in the daytime time zone mode 31A during the day is 50% or more of the total amount of hot water boiled in a day.
It is preferable that the operation means 40 allows the user to set the daytime operation start time and daytime operation end time, but if the user sets only the daytime operation start time, the daytime operation end time may be set based on the minimum operation time, and if the user sets only the daytime operation end time, the daytime operation start time may be set based on the minimum operation time.
制御装置３０は、１日の総沸き上げ湯量を算出する総沸き上げ湯量算出手段３４Ａと、操作手段４０で設定された昼間設定運転時間での設定沸き上げ湯量を算出する設定沸き上げ湯量算出手段３４Ｃと、設定沸き上げ湯量と１日の総沸き上げ湯量とを比較する沸き上げ湯量比較手段３４Ｄと、朝方時間帯湯切れ防止運転判断手段３７とを有している。
総沸き上げ湯量算出手段３４Ａでは、使用湯量記憶手段３３Ａに記憶されている使用湯量履歴によって１日の総沸き上げ湯量を算出する。
設定沸き上げ湯量算出手段３４Ｃでは、設定条件記憶手段３３Ｃに記憶されている昼間設定運転時間によって設定沸き上げ湯量を算出する。
沸き上げ湯量比較手段３４Ｄでは、総沸き上げ湯量算出手段３４Ａで算出される１日の総沸き上げ湯量と設定沸き上げ湯量算出手段３４Ｃで算出される設定沸き上げ湯量とを比較する。
The control device 30 has a total boiled hot water volume calculation means 34A that calculates the total amount of boiled hot water in a day, a set boiled hot water volume calculation means 34C that calculates the set boiled hot water volume for the daytime set operating hours set by the operation means 40, a boiled hot water volume comparison means 34D that compares the set boiled hot water volume with the total amount of boiled hot water in a day, and a morning time zone hot water shortage prevention operation determination means 37.
The total amount of hot water to be boiled calculation means 34A calculates the total amount of hot water to be boiled in one day based on the hot water usage history stored in the hot water usage storage means 33A.
The set amount of hot water to be heated calculation means 34C calculates the set amount of hot water to be heated based on the set daytime operation time stored in the set condition storage means 33C.
The boiled hot water volume comparison means 34D compares the total boiled hot water volume for one day calculated by the total boiled hot water volume calculation means 34A with the set boiled hot water volume calculated by the set boiled hot water volume calculation means 34C.
沸き上げ湯量比較手段３４Ｄにおいて、設定沸き上げ湯量が１日の総沸き上げ湯量以上であれば、昼間運転時間算出手段３５Ａによって設定沸き上げ湯量が総沸き上げ湯量となるように昼間時間帯モード３１Ａでの昼間運転時間を算出する。
昼間運転終了時刻決定手段３５Ｃでは、昼間運転時間算出手段３５Ａによって算出された昼間運転時間によって運転終了時刻を決定し、昼間時間帯モード３１Ａでは決定した運転終了時刻で昼間沸き上げ運転を終了する。
沸き上げ湯量比較手段３４Ｄにおいて、設定沸き上げ湯量が総沸き上げ湯量未満であれば、夜間運転時間算出手段３６Ａによって総沸き上げ湯量を確保するように夜間時間帯モード３１Ｂでの夜間運転時間を算出する。
制御装置３０では、夜間時間帯モード３１Ｂはあらかじめ設定された夜間運転終了時刻で運転を終了するように設定され、夜間運転時間算出手段３６Ａで夜間運転時間を算出した場合には、夜間運転開始時刻決定手段３６Ｂによって夜間時間帯モード３１Ｂでの夜間運転開始時刻を決定する。
In the hot water volume comparison means 34D, if the set hot water volume is equal to or greater than the total hot water volume for the day, the daytime operation time calculation means 35A calculates the daytime operation time in the daytime time zone mode 31A so that the set hot water volume becomes the total hot water volume.
The daytime operation end time determination means 35C determines the operation end time based on the daytime operation time calculated by the daytime operation time calculation means 35A, and in the daytime time zone mode 31A, the daytime heating operation is ended at the determined operation end time.
If the set boiling hot water volume comparison means 34D determines that the set boiling hot water volume is less than the total boiling hot water volume, the nighttime operation time calculation means 36A calculates the nighttime operation time in the nighttime time zone mode 31B so as to ensure the total boiling hot water volume.
In the control device 30, the night time zone mode 31B is set to end operation at a preset night operation end time, and when the night operation time calculation means 36A calculates the night operation time, the night operation start time determination means 36B determines the night operation start time in the night time zone mode 31B.
朝方時間帯湯切れ防止運転判断手段３７では、朝方時間帯の開始時刻にはあらかじめ設定された朝方時間帯設定湯量を確保するように、夜間時間帯モード３１Ｂで夜間沸き上げ運転を実行するか否か、及び実行する夜間沸き上げ運転の停止タイミングを判断する。
あらかじめ設定された朝方時間帯設定湯量は、朝方時間帯設定湯量記憶手段３３Ｂに記憶されている湯量であり、例えば朝方時間帯設定湯量を９０リットル以上とする。朝方時間帯での使用湯量を９０リットル以上とすることで、朝方時間帯での湯切れ防止と省エネ性能向上を図ることができる。朝方時間帯設定湯量は、使用履歴に基づいて決定することが好ましい。例えば、初期設定では９０リットル以上で設定しておき、使用履歴に基づいて朝方時間帯設定湯量を変更することで、朝方時間帯での湯切れ防止を効率的に行える。
The morning time zone hot water shortage prevention operation determination means 37 determines whether or not to execute nighttime boiling operation in the nighttime zone mode 31B and the timing to stop the executed nighttime boiling operation so as to secure a preset morning time zone set amount of hot water at the start time of the morning time zone.
The preset morning time slot set hot water volume is the volume of hot water stored in the morning time slot set hot water volume storage means 33B, and for example, the morning time slot set hot water volume is 90 liters or more. By setting the amount of hot water used in the morning time slot to 90 liters or more, it is possible to prevent hot water from running out in the morning time slot and improve energy-saving performance. It is preferable to determine the morning time slot set hot water volume based on the usage history. For example, by setting the initial setting to 90 liters or more and changing the morning time slot set hot water volume based on the usage history, it is possible to efficiently prevent hot water from running out in the morning time slot.
朝方時間帯湯切れ防止運転判断手段３７は、夜間時間帯に、残湯温度検出手段１８ａからの残湯温度、及び入水温度検出手段１８ｃからの入水温度を検出し、検出される残湯温度及び入水温度を用いて夜間沸き上げ運転を実行するか否かを判断する。
検出される残湯温度及び入水温度から貯湯タンク１０に貯留する温水の熱量と、朝方時間帯での使用湯量に必要な熱量とを算出でき、貯湯タンク１０に貯留する温水の熱量が不足している場合には、夜間沸き上げ運転を実行する。
なお、入水温度は、入水温度検出手段１８ｃで検出することができるが、給水温度検出手段１８ｂを用いることもできる。
入水温度検出手段１８ｃで検出する場合には、制御装置３０によって循環ポンプ１６を動作させ、循環ポンプ１６を動作させた後に湯水の温度を検出する。
朝方時間帯湯切れ防止運転判断手段３７における夜間沸き上げ運転を実行するか否かの判断は、夜間時間帯に常時行う。朝方時間帯湯切れ防止運転判断手段３７における夜間沸き上げ運転を実行するか否かの判断は、加熱装置２０の停止時に行う。
残湯温度検出手段１８ａからの残湯温度は、判断時にその都度検出するが、入水温度の検出はその都度行う必要はない。
朝方時間帯湯切れ防止運転判断手段３７で夜間沸き上げ運転を実行すると判断すると、夜間時間帯に加熱装置２０を動作させる。
このように、夜間時間帯に検出を行って夜間沸き上げ運転を実行するか否かの判断を行うことで、朝方時間帯での湯切れ防止を効率的に行える。
The morning time zone hot water shortage prevention operation determination means 37 detects the remaining hot water temperature from the remaining hot water temperature detection means 18a and the inlet water temperature from the inlet water temperature detection means 18c during the nighttime hours, and determines whether or not to perform nighttime boiling operation using the detected remaining hot water temperature and inlet water temperature.
The heat quantity of the hot water stored in the hot water storage tank 10 and the heat quantity required for the amount of hot water used in the morning hours can be calculated from the detected remaining hot water temperature and inlet water temperature, and if the heat quantity of the hot water stored in the hot water storage tank 10 is insufficient, nighttime boiling operation is performed.
The inlet water temperature can be detected by the inlet water temperature detection means 18c, but the supply water temperature detection means 18b can also be used.
When detection is performed using the inlet water temperature detection means 18c, the circulation pump 16 is operated by the control device 30, and the hot and cold water temperature is detected after the circulation pump 16 has been operated.
The morning time zone hot water shortage prevention operation determination means 37 determines whether or not to perform the nighttime boiling operation at all times during the nighttime. The morning time zone hot water shortage prevention operation determination means 37 determines whether or not to perform the nighttime boiling operation when the heating device 20 is stopped.
The remaining hot water temperature from the remaining hot water temperature detection means 18a is detected each time a judgment is made, but it is not necessary to detect the incoming water temperature each time.
When the morning time zone hot water shortage prevention operation decision means 37 decides to execute the nighttime boiling operation, the heating device 20 is operated during the nighttime zone.
In this way, by performing detection during the nighttime hours and determining whether or not to perform nighttime boiling operation, it is possible to efficiently prevent hot water from running out in the morning hours.
また、朝方時間帯湯切れ防止運転判断手段３７では、夜間時間帯に、入水温度検出手段１８ｃからの入水温度、沸き上げ温度検出手段１８ｄからの沸き上げ温度、及び循環ポンプ１６での通水量を検出し、検出される入水温度、沸き上げ温度、及び通水量を用いて夜間沸き上げ運転の停止タイミングを判断する。なお、停止タイミングの判断に用いる入水温度は、朝方時間帯湯切れ防止運転判断手段３７で夜間沸き上げ運転を実行すると判断した際に用いた入水温度を用いることができる。
検出される入水温度、沸き上げ温度、及び通水量を用いることで、沸き上げ運転によって貯湯タンク１０に貯留する温水の追加熱量を算出することができ、追加熱量が不足熱量に達するタイミングを停止タイミングとすることができる。
朝方時間帯湯切れ防止運転判断手段３７で夜間沸き上げ運転の停止タイミングを判断すると、判断された停止タイミングで、夜間時間帯での加熱装置２０の動作を停止する。
このように、夜間時間帯に検出を行って夜間沸き上げ運転の停止タイミングの判断を行うことで、朝方時間帯での湯切れ防止を効率的に行える。
なお、停止タイミングが夜間時間帯以降と判断されると、夜間時間帯の終了時刻で加熱装置２０の動作を停止することで、朝方時間帯にずれ込んだ沸き上げ運転を防止できる。
Also, the morning time zone hot water shortage prevention operation determination means 37 detects the inlet water temperature from the inlet water temperature detection means 18c, the boiling temperature from the boiling temperature detection means 18d, and the amount of water passing through the circulation pump 16 during the nighttime hours, and determines the timing to stop the nighttime boiling operation using the detected inlet water temperature, boiling temperature, and amount of water passing. Note that the inlet water temperature used to determine the timing to stop can be the inlet water temperature used when the morning time zone hot water shortage prevention operation determination means 37 determined that the nighttime boiling operation should be performed.
By using the detected inlet water temperature, boiling temperature, and water flow rate, the additional heat amount of hot water stored in the hot water storage tank 10 by the boiling operation can be calculated, and the timing when the additional heat amount reaches the insufficient heat amount can be determined as the timing to stop.
When the morning time zone hot water shortage prevention operation judging means 37 judges the timing to stop the nighttime boiling operation, the operation of the heating device 20 during the nighttime zone is stopped at the judged stop timing.
In this way, by performing detection during the nighttime hours and determining the timing to stop the nighttime heating operation, it is possible to efficiently prevent hot water shortages in the morning hours.
If the timing to stop is determined to be after the nighttime hours, the operation of the heating device 20 is stopped at the end of the nighttime hours, thereby preventing the boiling operation from running into the morning hours.
図２は本実施例による貯湯式給湯機の動作説明図である。
本実施例では、制御装置３０は、昼間時間帯を９時から１６時、夜間時間帯は２３時から６時、朝方時間帯を６時から９時と設定し、昼間時間帯における最低運転時間を４時間に設定している。
図２（ａ）は、給湯の使用例を示している。例えば、図２（ａ）に示すように、１８時から２２時まで、２時、７時、及び１２時に湯を使用する。
図２（ｂ）は貯湯タンク１０の湯水の状態を示している。
図２（ｃ）及び図２（ｄ）は加熱装置２０の運転時間帯を示している。
FIG. 2 is an explanatory diagram of the operation of the storage type hot water heater according to this embodiment.
In this embodiment, the control device 30 sets the daytime period from 9:00 to 16:00, the nighttime period from 23:00 to 6:00, and the morning period from 6:00 to 9:00, and sets the minimum operation time during the daytime period to 4 hours.
Fig. 2(a) shows an example of hot water supply usage. For example, as shown in Fig. 2(a), hot water is used from 18:00 to 22:00, at 2:00, 7:00, and 12:00.
FIG. 2( b ) shows the state of hot water in the hot water storage tank 10 .
2(c) and 2(d) show the operation time periods of the heating device 20. FIG.
図２（ｃ）に示す運転状態Ａは、夜間時間帯では、定期的に朝方時間帯湯切れ防止運転判断手段３７によって夜間沸き上げ運転を実行するか否かを判断する。
図２では、２時に湯が使用されており、貯湯タンク１０内の湯量が、朝方時間帯設定湯量を下回ると判断されると夜間沸き上げ運転を実行する。朝方時間帯湯切れ防止運転判断手段３７によって夜間沸き上げ運転が開始されると、沸き上げ温度検出手段１８ｄからの沸き上げ温度及び循環ポンプ１６での通水量を検出し、あらかじめ設定された朝方時間帯設定湯量を確保できるタイミングを夜間沸き上げ運転の停止タイミングとして加熱装置２０の動作を停止する。
In the operating state A shown in FIG. 2(c), during the nighttime hours, the morning time period hot water shortage prevention operation determining means 37 periodically determines whether or not to execute the nighttime boiling operation.
In Fig. 2, hot water is used at 2:00, and when it is determined that the amount of hot water in the hot water storage tank 10 falls below the amount of hot water set for the morning time period, night-time heating operation is executed. When night-time heating operation is started by the morning time period hot water shortage prevention operation determination means 37, the heating temperature from the heating temperature detection means 18d and the amount of water passing through the circulation pump 16 are detected, and the operation of the heating device 20 is stopped at the timing at which the preset amount of hot water set for the morning time period can be secured as the timing to stop the night-time heating operation.
図２（ｄ）に示す運転状態Ｂは、昼間設定運転時間での設定沸き上げ湯量が１日の総沸き上げ湯量未満となる場合を示している。すなわち、昼間運転時間より昼間設定運転時間が短い場合には、昼間時間帯モード３１Ａでは昼間設定運転時間で沸き上げ運転を行う。
運転状態Ｂは、使用者が昼間設定運転時間として１２時から１６時を設定している場合である。
制御装置３０は、昼間設定運転時間での設定沸き上げ湯量が１日の総沸き上げ湯量未満であれば、不足する湯量について夜間時間帯モード３１Ｂでの夜間運転時間を算出する。
夜間時間帯モード３１Ｂでは、算出された夜間運転時間で沸き上げる。制御装置３０では、あらかじめ設定された夜間運転終了時刻である６時に運転を終了するように設定されているため、算出された夜間運転時間によって夜間運転開始時刻が決定される。
夜間時間帯モード３１Ｂでは算出された夜間運転時間で夜間沸き上げ湯量を沸き上げ、昼間時間帯モード３１Ａでは設定沸き上げ湯量を沸き上げる。
その結果、図２（ｄ）に示す運転状態Ｂのように、夜間時間帯では６時に終了するように夜間時間帯モード３１Ｂによる沸き上げ運転が実行され、昼間時間帯では、１２時から１６時まで昼間時間帯モード３１Ａによる沸き上げ運転が実行される。
2(d) shows a case where the set amount of hot water to be heated during the daytime set operation time is less than the total amount of hot water to be heated in one day. In other words, when the daytime set operation time is shorter than the daytime operation time, the daytime time zone mode 31A performs the hot water heating operation during the daytime set operation time.
An operating state B is a case where the user sets the daytime operating hours from 12:00 to 16:00.
If the set amount of hot water to be heated during the daytime set operating time is less than the total amount of hot water to be heated in one day, the control device 30 calculates the nighttime operating time in the nighttime mode 31B to make up for the shortage of hot water.
In the nighttime time zone mode 31B, water is boiled for the calculated nighttime operation time. Since the control device 30 is set to end operation at 6:00, which is the preset nighttime operation end time, the nighttime operation start time is determined by the calculated nighttime operation time.
In the nighttime mode 31B, the amount of hot water to be boiled at night is boiled during the calculated nighttime operation time, and in the daytime mode 31A, the set amount of hot water to be boiled is boiled.
As a result, as shown in operating state B in Figure 2 (d), during the nighttime hours, boiling operation is performed in nighttime time zone mode 31B so as to end at 6:00, and during the daytime hours, boiling operation is performed in daytime time zone mode 31A from 12:00 to 16:00.
図３は本実施例による貯湯式給湯機での朝方時間帯湯切れ防止運転を示す制御フロー図である。
制御装置３０では、タイマー手段３２によって夜間時間帯であるか否かを判断する（Ｓ１）。
制御装置３０は、Ｓ１において夜間時間帯であると判断すると、残湯温度及び入水温度を検出し、検出された残湯温度及び入水温度から貯湯タンク１０内の残湯量を算出する（Ｓ２）。
制御装置３０は、Ｓ２で算出した残湯量と朝方時間帯設定湯量とを比較し（Ｓ３）、残湯量が朝方時間帯設定湯量より少ないと判断すると（Ｓ３でＹｅｓ）、夜間沸き上げ運転を実行する（Ｓ４）。
残湯量が朝方時間帯設定湯量以上であると判断すると（Ｓ３でＮｏ）、夜間時間帯であることを条件に（Ｓ１でＹｅｓ）、定期的に残湯量を算出する（Ｓ２）。
FIG. 3 is a control flow diagram showing the morning time zone hot water shortage prevention operation in the hot water storage type hot water heater according to this embodiment.
The control device 30 judges by the timer means 32 whether or not it is a nighttime period (S1).
When the control device 30 determines in S1 that it is the nighttime hours, it detects the remaining hot water temperature and the inlet water temperature, and calculates the amount of remaining hot water in the hot water storage tank 10 from the detected remaining hot water temperature and inlet water temperature (S2).
The control device 30 compares the remaining amount of hot water calculated in S2 with the amount of hot water set for the morning time zone (S3), and if it determines that the amount of remaining hot water is less than the amount of hot water set for the morning time zone (Yes in S3), it performs nighttime heating operation (S4).
If it is determined that the remaining amount of hot water is equal to or greater than the amount of hot water set for the morning time period (No in S3), the remaining amount of hot water is calculated periodically (S2) on the condition that it is a nighttime time period (Yes in S1).
Ｓ４における夜間沸き上げ運転は、夜間時間帯でなくなると（Ｓ５でＮｏ）、夜間沸き上げ運転を停止する（Ｓ６）。
制御装置３０は、Ｓ４における夜間沸き上げ運転を夜間時間帯（Ｓ５でＹｅｓ）に実行している場合には、入水温度、沸き上げ温度、及び通水量を検出し、検出された入水温度、沸き上げ温度、及び通水量を用いて沸き上げ湯量を算出する（Ｓ７）。
Ｓ７において算出される沸き上げ湯量が、朝方時間帯設定湯量－残湯量より多くなると（Ｓ８でＹｅｓ）、夜間沸き上げ運転を停止する（Ｓ９）。
Ｓ７において算出される沸き上げ湯量が、朝方時間帯設定湯量－残湯量以下になると（Ｓ８でＮｏ）、夜間沸き上げ運転を継続する（Ｓ４）。
このように、夜間時間帯モード３１Ｂにおける夜間沸き上げ運転を、朝方時間帯での使用湯量から設定することで、朝方時間帯での湯切れを無くせるとともに省エネ性能を向上させることができる。
When the nighttime period is no longer the nighttime hours (No in S5), the nighttime heating operation in S4 is stopped (S6).
When the control device 30 is performing the nighttime boiling operation in S4 during the nighttime hours (Yes in S5), it detects the inlet water temperature, the boiling temperature, and the water flow rate, and calculates the amount of water to be boiled using the detected inlet water temperature, the boiling temperature, and the water flow rate (S7).
When the amount of hot water to be heated calculated in S7 becomes greater than the morning time period set amount of hot water minus the remaining amount of hot water (Yes in S8), the nighttime heating operation is stopped (S9).
When the amount of hot water to be heated calculated in S7 becomes equal to or less than the morning time zone set amount of hot water minus the remaining amount of hot water (No in S8), the nighttime heating operation continues (S4).
In this way, by setting the nighttime heating operation in the nighttime mode 31B based on the amount of hot water used in the morning hours, it is possible to eliminate hot water shortages in the morning hours and improve energy-saving performance.
本発明によれば、昼間時間帯モードの運転を有効に効率よく行えるとともに、朝方時間帯での湯切れを防止できる。 The present invention allows for effective and efficient operation in daytime mode, while preventing hot water shortages in the morning hours.
１０ 貯湯タンク
１１ 沸き上げ配管
１２ 給湯栓
１３ 混合弁
１４ 給水配管
１５ 給湯配管
１６ 循環ポンプ
１７ 給湯流量検出手段
１８ａ 残湯温度検出手段
１８ｂ 給水温度検出手段
１８ｃ 入水温度検出手段
１８ｄ 沸き上げ温度検出手段
２０ 加熱装置
３０ 制御装置
３１ 沸き上げ運転モード
３１Ａ 昼間時間帯モード
３１Ｂ 夜間時間帯モード
３２ タイマー手段
３３Ａ 使用湯量記憶手段
３３Ｂ 朝方時間帯設定湯量記憶手段
３３Ｃ 設定条件記憶手段
３４Ａ 総沸き上げ湯量算出手段
３４Ｃ 設定沸き上げ湯量算出手段
３４Ｄ 沸き上げ湯量比較手段
３５Ａ 昼間運転時間算出手段
３５Ｃ 昼間運転終了時刻決定手段
３６Ａ 夜間運転時間算出手段
３６Ｂ 夜間運転開始時刻決定手段
３７ 朝方時間帯湯切れ防止運転判断手段
４０ 操作手段
LIST OF SYMBOLS 10 Hot water storage tank 11 Heating pipe 12 Hot water tap 13 Mixing valve 14 Water supply pipe 15 Hot water supply pipe 16 Circulation pump 17 Hot water supply flow rate detection means 18a Residual hot water temperature detection means 18b Supply water temperature detection means 18c Inlet water temperature detection means 18d Heating temperature detection means 20 Heating device 30 Control device 31 Heating operation mode 31A Daytime time zone mode 31B Nighttime time zone mode 32 Timer means 33A Used hot water amount storage means 33B Morning time zone set hot water amount storage means 33C Setting condition storage means 34A Total hot water amount calculation means 34C Set hot water amount calculation means 34D Hot water amount comparison means 35A Daytime operation time calculation means 35C Daytime operation end time determination means 36A Nighttime operation time calculation means 36B Nighttime operation start time determination means 37 Morning time zone hot water shortage prevention operation determination means 40 Operation means
Claims (5)
前記制御装置は、
前記加熱装置が前記貯湯タンク内の前記湯水を加熱する、沸き上げ運転モードを有し、
前記沸き上げ運転モードは、
昼間時間帯に昼間沸き上げ運転を実行する昼間時間帯モードと、
夜間時間帯に夜間沸き上げ運転を実行する夜間時間帯モードと
を有し、
前記昼間時間帯モードで沸き上げる昼間沸き上げ湯量を、１日の総沸き上げ湯量に対して５０％以上とする貯湯式給湯機であって、
前記夜間時間帯以降で前記昼間時間帯以前に朝方時間帯を設定し、
前記制御装置は、
前記朝方時間帯の開始時刻には、あらかじめ設定された朝方時間帯設定湯量を確保するように、前記夜間時間帯モードで前記夜間沸き上げ運転を実行し、
前記制御装置は、
前記夜間時間帯に、前記残湯温度検出手段からの前記残湯温度、及び前記入水温度検出手段からの前記入水温度を検出し、
検出される前記残湯温度及び前記入水温度を用いて前記夜間沸き上げ運転を実行するか否かを判断し、
前記夜間沸き上げ運転を実行すると判断すると、前記夜間時間帯に前記加熱装置を動作させる
ことを特徴とする貯湯式給湯機。 The hot water supply system comprises a hot water storage tank, a heating device for heating the hot water in the hot water storage tank, a control device, a residual hot water temperature detection means for detecting the temperature of the residual hot water in the hot water storage tank, and an inlet water temperature detection means for detecting the inlet temperature of the hot water introduced into the bottom of the hot water storage tank or discharged from the bottom of the hot water storage tank;
The control device includes:
The heating device has a boiling operation mode in which the hot water in the hot water storage tank is heated,
The boiling operation mode is
a daytime time zone mode in which daytime heating operation is performed during daytime hours;
A nighttime mode in which a nighttime boiling operation is performed during the nighttime,
A hot water storage type hot water heater in which the daytime hot water volume to be heated in the daytime time zone mode is set to 50% or more of the total hot water volume to be heated in a day,
A morning time zone is set after the night time zone and before the day time zone,
The control device includes:
At the start time of the morning time period, the nighttime boiling operation is executed in the nighttime time period mode so as to secure a preset morning time period set amount of hot water;
The control device includes:
During the nighttime hours, the remaining hot water temperature is detected from the remaining hot water temperature detection means, and the inlet water temperature is detected from the inlet water temperature detection means;
determining whether or not to perform the nighttime heating operation using the detected remaining hot water temperature and the detected inlet water temperature;
The storage type hot water heater is characterized in that, when it is determined that the nighttime heating operation is to be performed, the heating device is operated during the nighttime hours.
前記加熱装置で沸き上げられた前記湯水の沸き上げ温度を検出する沸き上げ温度検出手段と、
前記加熱装置に通水する循環ポンプと
を備え、
前記制御装置は、
前記夜間時間帯に、前記入水温度検出手段からの前記入水温度、前記沸き上げ温度検出手段からの前記沸き上げ温度、及び前記循環ポンプでの通水量を検出し、
検出される前記入水温度、前記沸き上げ温度、及び前記通水量を用いて前記夜間沸き上げ運転の停止タイミングを判断し、
判断された前記停止タイミングで、前記夜間時間帯での前記加熱装置の動作を停止する
ことを特徴とする請求項１に記載の貯湯式給湯機。 A boiling pipe that boils the hot water at the bottom of the hot water storage tank using the heating device and introduces the hot water into the hot water storage tank from an upper part of the hot water storage tank;
A boiling temperature detection means for detecting a boiling temperature of the hot water boiled by the heating device;
A circulation pump for passing water through the heating device,
The control device includes:
During the nighttime hours, the inlet water temperature from the inlet water temperature detection means, the boiling temperature from the boiling temperature detection means, and the water flow rate of the circulation pump are detected;
determining a timing to stop the nighttime heating operation using the detected inlet water temperature, the heating temperature, and the water flow rate;
The hot water storage type hot water heater according to claim 1 , wherein the operation of the heating device during the nighttime hours is stopped at the determined stop timing.
ことを特徴とする請求項１または請求項２に記載の貯湯式給湯機。 3. The hot water storage type hot water heater according to claim 1, wherein the set amount of hot water for the morning time period is determined based on a usage history.
ことを特徴とする請求項１に記載の貯湯式給湯機。 2. The hot water storage type hot water heater according to claim 1, wherein the determination as to whether or not to perform the nighttime boiling operation is made constantly when the heating device is stopped.
ことを特徴とする請求項２に記載の貯湯式給湯機。
The hot water storage type hot water heater according to claim 2, characterized in that if it is determined that the stop timing is after the nighttime period, the operation of the heating device is stopped at a time when the nighttime period ends.
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| JP2007212102A (en) | 2006-02-13 | 2007-08-23 | Matsushita Electric Ind Co Ltd | Hot water storage water heater |
| JP2013117343A (en) | 2011-12-02 | 2013-06-13 | Corona Corp | Heat-pump water heater |
| JP2016003788A (en) | 2014-06-16 | 2016-01-12 | パナソニックＩｐマネジメント株式会社 | Water heater and control device used for the same |
| JP2018189347A (en) | 2017-05-12 | 2018-11-29 | パナソニックＩｐマネジメント株式会社 | Water heater |
| JP2021191991A (en) | 2020-06-02 | 2021-12-16 | ダイキン工業株式会社 | Storage type water heater |
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| JPH10267416A (en) * | 1997-03-21 | 1998-10-09 | Toshiba Electric Appliance Co Ltd | Hot water storage type hot water supply apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007212102A (en) | 2006-02-13 | 2007-08-23 | Matsushita Electric Ind Co Ltd | Hot water storage water heater |
| JP2013117343A (en) | 2011-12-02 | 2013-06-13 | Corona Corp | Heat-pump water heater |
| JP2016003788A (en) | 2014-06-16 | 2016-01-12 | パナソニックＩｐマネジメント株式会社 | Water heater and control device used for the same |
| JP2018189347A (en) | 2017-05-12 | 2018-11-29 | パナソニックＩｐマネジメント株式会社 | Water heater |
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