JP4294624B2 - Hot water storage water heater - Google Patents

Hot water storage water heater Download PDF

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JP4294624B2
JP4294624B2 JP2005254217A JP2005254217A JP4294624B2 JP 4294624 B2 JP4294624 B2 JP 4294624B2 JP 2005254217 A JP2005254217 A JP 2005254217A JP 2005254217 A JP2005254217 A JP 2005254217A JP 4294624 B2 JP4294624 B2 JP 4294624B2
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hot water
drainage
pipe
water
storage tank
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JP2007064581A (en
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隆志 真柄
正喜 高地
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株式会社コロナ
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この発明は、湯水を沸き上げて貯湯しこの貯湯した湯水を給湯に用いる貯湯式給湯装置に関するものである。   The present invention relates to a hot water storage type hot water supply apparatus that boils and stores hot water and uses the stored hot water for hot water supply.
従来よりこの種のものに於いては、出張や旅行で長期間留守にする時に貯湯タンク内の湯水の凍結防止及び腐敗防止の為に、先に出願人は該貯湯タンク内の水抜きを給水栓を閉めてから排水栓を開けることで行うものを出願した。(例えば、特許文献1参照)   Conventionally, in this kind of thing, the applicant first supplies the water in the hot water storage tank to prevent freezing and corruption in the hot water storage tank when leaving for a long time on a business trip or travel. An application was filed by closing the stopper and opening the drain valve. (For example, see Patent Document 1)
しかし、この従来のものでは、自然落差を利用して排水するものであり、貯湯タンク容量は300L以上であって、全て排水するまで30分以上もかかってしまうので、排水が終了するまで待たなければならず、前もって排水しておく必要があり、使用者にとっては手間が掛かり面倒なものであった。
又自然落差による排水であるので、排水路が上に有る場合には新たな工事も必要になるものであった。
However, in this conventional system, drainage is performed using a natural head, and the hot water storage tank capacity is 300L or more, and it takes more than 30 minutes to drain all, so you must wait until drainage is finished. It was necessary to drain the water in advance, which was troublesome and troublesome for the user.
Moreover, since it is drainage by a natural head, when the drainage channel is above, new construction is also required.
そこで出願人は、更に貯湯タンク内の湯水を排水する時に、該貯湯タンクに接続される排水ポンプを設けた排水管を別置きしたものを出願した。(例えば、特許文献2参照)   Therefore, the applicant filed another application in which a drain pipe provided with a drain pump connected to the hot water storage tank is separately provided when the hot water in the hot water storage tank is drained. (For example, see Patent Document 2)
特開2002−48405号公報JP 2002-48405 A 特開2004−197957号公報JP 2004-197957 A
ところで、この従来のものでは、運転中に沸かし上げた熱いお湯に水が混合しないように、貯湯タンクからのお湯と給水管からの水を混合して所定の温度の温水にする給湯混合弁が水側全開の状態に固定されている為、排水が終了してもお湯側に配置された部分、例えばホッパー、給湯混合弁、中間混合管、出湯管の部分で水が抜けない箇所があり、冬季の施工後、引き渡しまでの期間や出張、旅行等で留守にする場合など長期間使用しない場合電源を落とすため、凍結防止のために凍結防止ヒータ等への通電が行われず、それによりお湯側に配置されたホッパー、給湯混合弁、中間混合管、分岐中間混合管、出湯管の部分で抜けなかった水が凍結して配管破裂やホッパーや混合弁等の機能部品が破損することがあった。   By the way, with this conventional one, there is a hot water supply mixing valve that mixes hot water from a hot water storage tank and water from a water supply pipe into hot water at a predetermined temperature so that the hot water boiled during operation is not mixed. Because the water side is fully open, there are places where water does not escape in the parts placed on the hot water side, such as hoppers, hot water mixing valves, intermediate mixing pipes, and hot water pipes, even after draining is complete. After the construction in winter, when it is not used for a long time, such as when it is not used for a period before delivery, business trip, travel, etc., the power is turned off, so the anti-freeze heater etc. is not energized to prevent freezing. The water that did not come off at the hopper, hot water supply mixing valve, intermediate mixing pipe, branch intermediate mixing pipe, and hot water outlet placed in the pipe may rupture and the functional parts such as the hopper and the mixing valve may be damaged. .
そこで、本発明は前記課題を解決するため、請求項1では、温水を貯湯する貯湯タンクと、該貯湯タンクに給水する給水管と、該給水管を開閉する給水栓と、該貯湯タンク内のお湯を貯湯タンクから出湯する出湯管と、貯湯タンク上部に設けられ貯湯タンク内の過圧を逃がす逃がし弁と、出湯管からのお湯と給水管からの水とを混合して給湯管に供給する給湯混合弁と、一端が貯湯タンクの底部に接続された排水管と、該排水管を開閉する排水栓とを備え、前記給水栓を閉成し逃がし弁を開放した後に給湯混合弁を水側全開の状態で排水栓を開放し、次に給湯混合弁をお湯側全開の状態に切り替えて排水を行い、その後給湯混合弁を水側全開の状態に戻す排水モードを行う排水スイッチを設けたものである。   Accordingly, in order to solve the above problems, the present invention provides a hot water storage tank for storing hot water, a water supply pipe for supplying water to the hot water storage tank, a water tap for opening and closing the water supply pipe, A hot water outlet pipe for discharging hot water from a hot water storage tank, a relief valve provided at the upper part of the hot water storage tank for releasing the overpressure in the hot water storage tank, hot water from the hot water discharge pipe and water from the water supply pipe are mixed and supplied to the hot water supply pipe. A hot water mixing valve, a drain pipe having one end connected to the bottom of the hot water storage tank, and a drain plug for opening and closing the drain pipe, and after closing the water tap and opening the relief valve, A drainage switch that opens the drain valve in the fully open state, then switches the hot water supply mixing valve to the hot water side fully open state, drains water, and then switches to the water side fully open state to perform the drainage mode. It is.
又請求項2に係る貯湯式給湯装置では、特にその構成を、温水を貯湯する貯湯タンクと、該貯湯タンクに給水する給水管と、該給水管を開閉する給水栓と、該貯湯タンク内のお湯を貯湯タンクから出湯する出湯管と、貯湯タンク上部に設けられ貯湯タンク内の過圧を逃がす逃がし弁と、一端が貯湯タンクの中間部分に接続された中間取り出し管と、出湯管からのお湯と中間取り出し管からのお湯とを混合して中間給湯管に供給する中間混合弁と、中間給湯管からのお湯と給水管から給水バイパス管を介して供給される給水とを混合して給湯管に供給する給湯混合弁と、一端が貯湯タンクの底部に接続された排水管と、該排水管を開閉する排水栓とを備え、前記給水栓を閉成し逃がし弁を開放した後に給湯混合弁を水側全開の状態で排水栓を開放し、次に給湯混合弁をお湯側全開の状態に切り替えて排水を行い、その後給湯混合弁を水側全開の状態に戻す排水モードを行う排水スイッチを設けたものである。   Further, in the hot water storage type hot water supply apparatus according to claim 2, in particular, the configuration thereof includes a hot water storage tank for storing hot water, a water supply pipe for supplying water to the hot water storage tank, a water tap for opening and closing the water supply pipe, A hot water outlet pipe for discharging hot water from the hot water storage tank, a relief valve provided at the upper part of the hot water storage tank for releasing the overpressure in the hot water storage tank, an intermediate discharge pipe having one end connected to an intermediate portion of the hot water storage tank, and hot water from the hot water supply pipe Mixing hot water from the intermediate hot water pipe and the intermediate hot water from the intermediate hot water pipe and hot water from the intermediate hot water pipe and hot water supplied from the water supply pipe through the water supply bypass pipe The hot water mixing valve is provided with a hot water mixing valve that is connected to the bottom of the hot water storage tank, and a drain plug that opens and closes the drain pipe, and the hot water mixing valve is closed and the relief valve is opened. Open the drain valve with the water side fully open. And performs then drained by switching the hot water supply mixing valve of the state of the hot water side fully open, is subsequently hot-water supply mixing valve that is provided with drainage switch for draining mode to return to the state of the water side fully open.
又請求項3に係る貯湯式給湯装置では、特にその構成を、請求項1及び2に於いて、所定時間を計時する排水タイマを設け、排水スイッチは排水モードを行う時に、給水栓を閉成し逃がし弁を開放した後に、給湯混合弁を水側全開の状態で排水栓を開放すると共に排水タイマの計時を開始し、排水タイマの計時が所定時間に達した時、給湯混合弁をお湯側全開の状態に切り替えて排水を行うと共に排水タイマの計時を再度開始し、排水タイマの計時が所定時間に達した時、給湯混合弁を水側全開の状態に戻す排水モードを行うものである。   Further, in the hot water storage type hot water supply apparatus according to claim 3, in particular, in the structure of claim 1 and 2, a drainage timer for measuring a predetermined time is provided, and the drainage switch closes the water tap when performing the drainage mode. After opening the relief valve, open the drain valve with the hot water mixing valve fully open and start counting the drain timer. When the drain timer reaches the specified time, turn the hot water mixing valve to the hot water side. The drainage mode is performed by switching to the fully open state and draining and restarting the drainage timer, and when the drainage timer reaches a predetermined time, the hot water mixing valve is returned to the water side fully open state.
又請求項4に係る貯湯式給湯装置では、特にその構成を、請求項1及び2に於いて、排水管に流水センサを設け、排水スイッチは排水モードを行う時に、給水栓を閉成し逃がし弁を開放した後に、給湯混合弁を水側全開の状態で排水栓を開放すると共に流水センサにて排水管の排水を検知し、流水センサが排水管の排水を検知しなくなった時、給湯混合弁をお湯側全開の状態に切り替えて排水を行い、その時流水センサにて排水管の排水を検知し、流水センサが排水管の排水を検知しなくなった時、給湯混合弁を水側全開の状態に戻す排水モードを行うものである。   Further, in the hot water storage type hot water supply apparatus according to claim 4, in particular, in the structure of claim 1 and 2, a water flow sensor is provided in the drain pipe, and when the drain switch performs the drain mode, the water tap is closed and released. After opening the valve, open the drain valve with the hot water mixing valve fully open and detect the drainage of the drain pipe with the flow sensor, and mix the hot water when the drain sensor no longer detects drainage of the drain pipe When the valve is switched to the hot water side fully open, drainage is performed, and then the drainage of the drain pipe is detected by the running water sensor, and when the running water sensor no longer detects drainage of the drain pipe, the hot water supply mixing valve is fully opened. The drainage mode to return to is performed.
この発明の請求項1によれば、給水栓を閉成し逃がし弁を開放した後に給湯混合弁を水側全開の状態で排水栓を開放し、次に給湯混合弁をお湯側全開の状態に切り替えて排水を行う排水モードを行う排水スイッチをを設けたので、貯湯タンク及び給湯混合弁に接続されている水側とお湯側の配管内を完全に排水できるので、長期間使用しない場合に冬になっても凍結が発生せず、配管破裂や機能部品の凍結による破損を防止することができるものである。   According to the first aspect of the present invention, after closing the water tap and opening the relief valve, the hot water mixing valve is opened with the water side fully open, the drain plug is opened, and then the hot water mixing valve is fully opened. A drainage switch that performs drainage mode to switch to drainage is provided, so the water side and hot water side pipes connected to the hot water storage tank and hot water mixing valve can be completely drained, so it is winter when not used for a long time Even if it becomes, freezing does not generate | occur | produce and it can prevent the failure | damage by piping rupture or freezing of a functional component.
又本発明の請求項2に記載の貯湯式給湯装置によれば、給水栓を閉成し逃がし弁を開放した後に、給湯混合弁を水側全開の状態で排水栓を開放して排水栓から給湯混合弁までの給水管、給水バイパス管の水側の排水を行い、次に給湯混合弁をお湯側全開の状態に切り替えて、出湯管から中間混合管を介して給湯混合弁までのお湯側の排水を行う排水モードを行う排水スイッチを設けたので、排水栓から給湯混合弁までの給水管、給水バイパス管の水側水側と、出湯管から中間混合管を介して給湯混合弁までのお湯側の配管内を完全に排水できるので、長期間使用しない場合に冬になっても凍結が発生せず、配管破裂や機能部品の凍結による破損を防止することができるものである。   According to the hot water storage type hot water supply apparatus according to claim 2 of the present invention, the water tap is closed and the relief valve is opened, and then the hot water mixing valve is opened with the water side fully open to open the drain plug. Drain the water side of the water supply pipe to the hot water supply mixing valve and the water supply bypass pipe, then switch the hot water supply mixing valve to the hot water side fully open state, and the hot water side from the hot water supply pipe to the hot water supply mixing valve through the intermediate mixing pipe A drainage switch that performs a drainage mode is provided so that the water supply pipe from the drain tap to the hot water supply mixing valve, the water side water side of the water supply bypass pipe, and the hot water supply mixing valve from the hot water supply pipe through the intermediate mixing pipe Since the hot water side pipe can be completely drained, freezing does not occur even in the winter when it is not used for a long time, and it is possible to prevent damage caused by pipe rupture or freezing of functional parts.
又本発明の請求項3に記載の貯湯式給湯装置によれば、前記請求項1及び請求項2に於いて、排水タイマを設けてその排水タイマが所定時間を計時すると、給湯混合弁を水側全開からお湯側全開の状態、又はお湯側全開の状態から水側全開の状態に切り替えるので、貯湯タンク及び給湯混合弁に接続されている水側とお湯側の配管内を完全に排水できるので、長期間使用しない場合に冬になっても凍結が発生せず、配管破裂や機能部品の凍結による破損を防止することができるものである。   According to a third aspect of the present invention, in the hot water storage type hot water supply apparatus according to the first and second aspects, when the drainage timer is provided and the drainage timer counts a predetermined time, the hot water mixing valve is turned on. Since the hot water side fully open state or the hot water side fully open state is switched to the water side fully open state, the water side and hot water side pipes connected to the hot water storage tank and hot water mixing valve can be completely drained. When not used for a long period of time, freezing does not occur even in the winter, and it is possible to prevent damage due to piping rupture or freezing of functional parts.
又本発明の請求項4に記載の貯湯式給湯装置によれば、前記請求項1及び請求項2に於いて、排水管に流水センサを設けてその流水センサが排水管内の排水の有無を検知することで、給湯混合弁を水側全開からお湯側全開の状態、又はお湯側全開の状態から水側全開の状態に切り替えるので、貯湯タンク及び給湯混合弁に接続されている水側とお湯側の配管内を完全に排水できるので、長期間使用しない場合に冬になっても凍結が発生せず、配管破裂や機能部品の凍結による破損を防止することができるものである。   According to claim 4 of the present invention, in the hot water storage type hot water supply apparatus according to claim 1 or 2, the water flow sensor is provided in the drain pipe, and the water sensor detects the presence or absence of drainage in the drain pipe. By switching the hot water mixing valve from the water side fully open state to the hot water side fully open state, or from the hot water side fully open state to the water side fully open state, the water side and hot water side connected to the hot water storage tank and hot water mixing valve Since the inside of the pipe can be completely drained, freezing does not occur even in the winter when the pipe is not used for a long period of time, and it is possible to prevent damage caused by pipe rupture or freezing of functional parts.
次に、この発明の一実施形態を図面に基づいて説明する。
この貯湯式給湯装置は、時間帯別契約電力の電力単価が安価な深夜時間帯に湯水を沸き上げて貯湯しこの貯湯した湯水を給湯に用いるもので、更に貯湯缶体内の温水との間接熱交換により浴槽内の浴槽水の追焚き又は保温及び、貯湯缶体内の温水を浴槽内に直接供給する湯張りを行う風呂回路を備えたもので、1は湯水を貯湯する貯湯タンク2を備えた貯湯タンクユニット、3は貯湯タンク2内の湯水を加熱する加熱手段としてのヒートポンプユニット、4は台所や洗面所等に設けられた給湯栓、5はこの給湯栓4の近くに設けられた給湯リモコン、6は浴槽、7は浴室に設けられた風呂リモコンである。
Next, an embodiment of the present invention will be described with reference to the drawings.
This hot water storage type hot water supply device is used to boil hot water and store hot water in the midnight hours when the unit price of contracted electricity by time zone is low, and to use this hot water for hot water supply. In addition, indirect heat with hot water in the hot water storage can It is equipped with a hot water tank 2 for storing hot water, with a bath circuit for replenishing or keeping warm water in the bathtub and replacing the hot water in the hot water storage can directly into the bathtub. A hot water storage tank unit, 3 is a heat pump unit as a heating means for heating the hot water in the hot water storage tank 2, 4 is a hot water tap provided in a kitchen or a washroom, and 5 is a hot water remote controller provided near the hot water tap 4 , 6 is a bathtub, and 7 is a bath remote control provided in the bathroom.
前記貯湯タンクユニット1の貯湯タンク2は、上端に出湯管8と、下端に給水管9とが接続され、さらに、下部にヒートポンプ循環回路を構成するヒートポンプ往き管10と、上部にヒートポンプ循環回路を構成するヒートポンプ戻り管11とが接続され、前記ヒートポンプユニット3によってヒートポンプ往き管10から取り出した貯湯タンク2内の湯水を沸き上げてヒートポンプ戻り管11から貯湯タンク2内に戻して貯湯され、給水管9からの給水により貯湯タンク2内の湯水が押し上げられて貯湯タンク2内上部の高温水が出湯管8から押し出されて給湯されるものである。   The hot water storage tank 2 of the hot water storage tank unit 1 has a hot water discharge pipe 8 connected to the upper end, a water supply pipe 9 connected to the lower end, a heat pump forward pipe 10 constituting a heat pump circulation circuit in the lower part, and a heat pump circulation circuit in the upper part. The heat pump return pipe 11 is connected, the hot water in the hot water storage tank 2 taken out from the heat pump forward pipe 10 is boiled by the heat pump unit 3 and returned to the hot water storage tank 2 from the heat pump return pipe 11 to be stored in the hot water supply pipe. The hot water in the hot water storage tank 2 is pushed up by the supply of water from the hot water 9, and the hot water in the upper part of the hot water storage tank 2 is pushed out from the hot water discharge pipe 8 to supply hot water.
前記ヒートポンプユニット3は、圧縮機12と凝縮器としての冷媒−水熱交換器13と減圧器としての電子膨張弁14と強制空冷式の蒸発器15で構成されたヒートポンプ回路16と、貯湯タンク2内の湯水を前記ヒートポンプ往き管10及びヒートポンプ戻り管11を介して冷媒−水熱交換器13に循環させるヒートポンプ循環ポンプ17と、それらの駆動を制御するヒートポンプ制御部18とを備えており、ヒートポンプ回路16内には冷媒として二酸化炭素が用いられて超臨界ヒートポンプサイクルを構成されているものである。
なお、冷媒に二酸化炭素が用いられているので、低温水を電熱ヒータなしで約90℃の高温まで沸き上げることが可能なものである。
The heat pump unit 3 includes a compressor 12, a refrigerant-water heat exchanger 13 as a condenser, an electronic expansion valve 14 as a decompressor, and a forced air-cooled evaporator 15, and a hot water storage tank 2. A heat pump circulation pump 17 that circulates the hot water in the refrigerant to the refrigerant-water heat exchanger 13 via the heat pump forward pipe 10 and the heat pump return pipe 11, and a heat pump control unit 18 that controls the drive of the heat pump. In the circuit 16, carbon dioxide is used as a refrigerant to constitute a supercritical heat pump cycle.
Since carbon dioxide is used as the refrigerant, low-temperature water can be boiled up to a high temperature of about 90 ° C. without an electric heater.
ここで、前記冷媒−水熱交換器13は冷媒と被加熱水たる貯湯タンク2内の湯水とが対向して流れる対向流方式を採用しており、超臨界ヒートポンプサイクルでは熱交換時において、冷媒は超臨界状態のまま凝縮されるため効率よく高温まで被加熱水を加熱することが出来、被加熱水の冷媒−水熱交換器13入口温度と冷媒の出口温度との温度差が一定になるように前記電子膨張弁14又は圧縮機12を制御することで、被加熱水の冷媒−水熱交換器13の入口温度が5〜20℃程度の低い温度であると、COP(エネルギー消費効率)がとても良い状態で被加熱水を加熱することが可能なものである。   Here, the refrigerant-water heat exchanger 13 employs a counter flow system in which the refrigerant and hot water in the hot water storage tank 2 that is heated water face each other. In the supercritical heat pump cycle, the refrigerant is used during heat exchange. Is condensed in a supercritical state, so that the water to be heated can be efficiently heated to a high temperature, and the temperature difference between the refrigerant-water heat exchanger 13 inlet temperature and the refrigerant outlet temperature becomes constant. By controlling the electronic expansion valve 14 or the compressor 12 as described above, when the inlet temperature of the refrigerant-water heat exchanger 13 to be heated is a low temperature of about 5 to 20 ° C., COP (energy consumption efficiency) However, it is possible to heat the water to be heated in a very good state.
19は前記浴槽6の湯水を加熱するためのステンレス製の蛇管よりなる風呂用熱交換器で、貯湯タンク2のほぼ中間部に備えられているものであり、又この風呂用熱交換器19には風呂往き管20及び風呂循環ポンプ21を備えた風呂戻り管22が接続されて浴槽6の湯水が循環可能にされ、浴槽6内の湯水が貯湯タンク2内の高温水により加熱されて保温或いは追い焚きが行われるのである。
なお、23は風呂戻り管22を循環する浴槽6の湯水の温度を検出する風呂温度センサである。
Reference numeral 19 denotes a bath heat exchanger made of a stainless steel tube for heating the hot water in the bathtub 6, which is provided in an almost middle portion of the hot water storage tank 2. A bath return pipe 22 having a bath outlet pipe 20 and a bath circulation pump 21 is connected so that hot water in the bathtub 6 can be circulated, and the hot water in the bathtub 6 is heated by the high-temperature water in the hot water storage tank 2 to be kept warm. A chasing is done.
Reference numeral 23 denotes a bath temperature sensor for detecting the temperature of hot water in the bathtub 6 circulating through the bath return pipe 22.
24は一端が貯湯タンク2の側壁で上記風呂用熱交換器19と対向する中間位置に接続された中間取り出し管で、前記風呂用熱交換器19で風呂側と熱交換して温度低下した中温水や湯と水の境界層付近で温度低下或いは温度上昇した中温水などの貯湯タンク2の中間位置に貯められている湯水を貯湯タンク2から出湯するものである。   Reference numeral 24 is an intermediate take-out pipe connected at one end to the intermediate position facing the bath heat exchanger 19 on the side wall of the hot water storage tank 2, and the temperature is lowered by exchanging heat with the bath side in the bath heat exchanger 19. Hot water stored at an intermediate position of the hot water storage tank 2 such as warm water or intermediate temperature water whose temperature has decreased or increased in the vicinity of the boundary layer of hot water and water is discharged from the hot water storage tank 2.
25は前記出湯管8からの高温水と前記中間取り出し管24からの中温水を混合する電動ミキシング弁より構成された中間混合弁、26は前記中間混合弁25下流の中間給湯管27に設けた中間温度センサで、貯湯タンク2中間位置付近の中温水と貯湯タンク2上端に接続された出湯管8からの高温水とを給湯リモコン5や風呂リモコン7でユーザーが設定した給湯設定温度より所定温度高い混合目標温度になるように混合比率が制御されるものである。   Reference numeral 25 denotes an intermediate mixing valve composed of an electric mixing valve for mixing high temperature water from the hot water discharge pipe 8 and intermediate temperature water from the intermediate discharge pipe 24, and 26 is provided in an intermediate hot water supply pipe 27 downstream of the intermediate mixing valve 25. With the intermediate temperature sensor, the hot water near the intermediate position of the hot water tank 2 and the hot water from the hot water pipe 8 connected to the upper end of the hot water tank 2 are set at a predetermined temperature from the hot water set temperature set by the user with the hot water remote controller 5 or the bath remote controller 7. The mixing ratio is controlled to achieve a high mixing target temperature.
28は中間混合弁25からの湯水と給水管9から分岐された給水バイパス管29からの低温水を混合する電動ミキシング弁より構成された給湯混合弁であり、その下流の給湯管30に設けた給湯温度センサ31で検出した湯温が給湯リモコン5や風呂リモコン7でユーザーが設定した給湯設定温度になるように混合比率を制御するものである。   28 is a hot water mixing valve composed of an electric mixing valve that mixes hot water from the intermediate mixing valve 25 and low temperature water from the water supply bypass pipe 29 branched from the water supply pipe 9, and is provided in the hot water supply pipe 30 downstream thereof. The mixing ratio is controlled so that the hot water temperature detected by the hot water supply temperature sensor 31 becomes the hot water supply set temperature set by the user using the hot water remote controller 5 or the bath remote controller 7.
32は中間給湯管27から分岐された分岐中間給湯管33からの湯水と、給水管9から分岐された分岐給水バイパス管34からの低温水とを混合する電動ミキシング弁より構成された風呂混合弁であり、その下流側の風呂戻り管22に練通された湯張り管35に設けた湯張り温度センサ36で検出した湯温が給湯リモコン5や風呂リモコン7でユーザーが設定した風呂設定温度になるように混合比率を制御するものである。   32 is a bath mixing valve composed of an electric mixing valve that mixes hot water from the branched intermediate hot water pipe 33 branched from the intermediate hot water pipe 27 and low temperature water from the branched water supply bypass pipe 34 branched from the water supply pipe 9. The hot water temperature detected by the hot water temperature sensor 36 provided in the hot water pipe 35 knitted to the bath return pipe 22 on the downstream side becomes the bath set temperature set by the user with the hot water remote controller 5 or the bath remote controller 7. Thus, the mixing ratio is controlled.
そして、前記湯張り管35には、浴槽6への湯張りの開始及び停止を行う湯張り弁37と、浴槽6への湯張り量をカウントする風呂流量カウンタ38が設けられているものである。   The hot water filling pipe 35 is provided with a hot water filling valve 37 for starting and stopping hot water filling to the bathtub 6 and a bath flow rate counter 38 for counting the amount of hot water filling to the bathtub 6. .
39は貯湯タンク2の上下方向に複数個配置された貯湯温度センサで、この実施形態では5つの温度センサ39a,39b,39c,39d,39eが配置され、この貯湯温度センサ39が検出する温度情報によって、貯湯タンク2内にどれだけの熱量が残っているかを検知し、そして貯湯タンク2内の上下方向の温度分布を検知するものである。   A plurality of hot water storage temperature sensors 39 are arranged in the vertical direction of the hot water storage tank 2. In this embodiment, five temperature sensors 39 a, 39 b, 39 c, 39 d, 39 e are arranged, and temperature information detected by the hot water storage temperature sensor 39. Thus, the amount of heat remaining in the hot water storage tank 2 is detected, and the temperature distribution in the vertical direction in the hot water storage tank 2 is detected.
前記給湯リモコン5及び風呂リモコン7には、給湯設定温度を設定する給湯温度設定スイッチ40、及び風呂設定温度を設定する風呂温度設定スイッチ41がそれぞれ設けられていると共に、浴槽6への風呂設定温度の湯を風呂リモコン7の湯張り量設定スイッチ(図示せず)で設定された湯張り量だけ湯張りし、所定時間保温させる風呂自動スイッチ42がそれぞれ設けられ、更に風呂リモコン7には約60℃の高温の湯を差し湯させる高温差し湯スイッチ43が設けられているものである。   The hot water remote controller 5 and the bath remote controller 7 are respectively provided with a hot water supply temperature setting switch 40 for setting a hot water supply set temperature and a bath temperature setting switch 41 for setting the bath set temperature, and a bath set temperature for the bathtub 6. The bath remote control 7 is provided with an automatic bath switch 42 that fills the hot water by a hot water filling amount set by a hot water filling amount setting switch (not shown) of the bath remote control 7 and keeps it warm for a predetermined time. A hot water hot water switch 43 for pouring hot water at a high temperature of 0 ° C. is provided.
44は貯湯タンクユニット1内の各センサの入力を受け各アクチュエータの駆動を制御するマイコンを有した制御部である。
この制御部44に前記給湯リモコン5が無線又は有線により接続されユーザーが任意の給湯設定温度及び風呂設定温度を設定できるようにしているものである。
Reference numeral 44 denotes a control unit having a microcomputer that receives the input of each sensor in the hot water storage tank unit 1 and controls the drive of each actuator.
The hot water remote controller 5 is connected to the controller 44 by radio or wire so that the user can set an arbitrary hot water set temperature and bath set temperature.
前記制御部44は、中間温度センサ26で検出する温度が給湯設定温度或いは風呂設定温度のうち高い方の設定温度より所定温度高い混合目標温度になるように中間混合弁25の弁開度をフィードバック制御するようにしているものであると共に、給湯温度センサ31の検出する温度が給湯設定温度になるように給湯混合弁28の弁開度をフィードバック制御するようにしているもので、更に湯張り温度センサ36の検出する温度が風呂設定温度になるように風呂混合弁32の弁開度をフィードバック制御するようにしているものである。   The controller 44 feeds back the valve opening degree of the intermediate mixing valve 25 so that the temperature detected by the intermediate temperature sensor 26 becomes a mixing target temperature that is higher by a predetermined temperature than the higher set temperature of the hot water supply set temperature or the bath set temperature. The valve opening degree of the hot water supply mixing valve 28 is feedback controlled so that the temperature detected by the hot water supply temperature sensor 31 becomes the hot water supply set temperature. The valve opening degree of the bath mixing valve 32 is feedback-controlled so that the temperature detected by the sensor 36 becomes the bath set temperature.
そして、前記制御部44は中間混合弁25の制御応答速度を給湯混合弁28の制御応答速度よりも遅くなるように設定されているもので、中間混合弁25からの湯水の温度変化に給湯混合弁28のフィードバック制御の制御応答速度が勝り給湯温度のオーバーシュート又はアンダーシュートを大幅に低減できるものである。   The controller 44 is set so that the control response speed of the intermediate mixing valve 25 is slower than the control response speed of the hot water supply mixing valve 28. The control response speed of the feedback control of the valve 28 is superior, and the overshoot or undershoot of the hot water supply temperature can be greatly reduced.
45は貯湯タンク2内の過圧を逃す逃し弁、46は給水の圧力を減圧する減圧弁、47は給湯する湯水の量をカウントする給湯流量カウンタ、48は浴槽6の湯水が逆流するのを防止するために設けられた逆止弁、49は給水の温度を検出する給水温度センサである。   45 is a relief valve for releasing the overpressure in the hot water storage tank 2, 46 is a pressure reducing valve for reducing the pressure of the water supply, 47 is a hot water flow rate counter for counting the amount of hot water to be supplied, and 48 is for the hot water in the bathtub 6 to flow backward. A check valve 49 provided to prevent this is a water supply temperature sensor that detects the temperature of the water supply.
50は給水管9を開閉する給水栓で、給水管9に設けた減圧弁46よりも上流側に設けたものである。
51は排水管で、一端が貯湯タンク2の底部に接続され、該排水管51には排水管51を開閉する排水栓52を設け、排水栓52の下流側には排水管51内の排水の有無を検知する流水センサ53を設けたものである。
54は排水スイッチで、給湯リモコン5に設けられ、押圧されると排水モードを実行して、貯湯タンク2及び配管内の排水を行うものである。
Reference numeral 50 denotes a water tap that opens and closes the water supply pipe 9 and is provided upstream of the pressure reducing valve 46 provided in the water supply pipe 9.
A drain pipe 51 is connected at one end to the bottom of the hot water storage tank 2. The drain pipe 51 is provided with a drain plug 52 that opens and closes the drain pipe 51. A flowing water sensor 53 for detecting the presence or absence is provided.
A drain switch 54 is provided in the hot water remote controller 5 and executes a drain mode when pressed to drain the hot water storage tank 2 and piping.
次に本発明の排水動作について図2にて説明する。
まず排水スイッチ54をON操作して排水モードを開始すると(S1)、給水栓50が閉成され(S2)、そして逃し弁45が開放される。(S3)
そして次に給湯混合弁28が水側全開の状態ならば(S4)、排水栓53が開放されて(S5)、排水栓53から給湯混合弁28までの給水管9、給水バイパス管29の水側の排水を開始し、給湯混合弁28が水側全開の状態でなければ(S4)、給湯混合弁28を水側全開の状態に切り替えて(S6)、次に排水栓53を開放して(S5)、排水栓53から給湯混合弁28までの給水管9、給水バイパス管29の水側の排水を開始する。
そしてそれと同時に排水時間を計時する排水タイマ(図示せず)の計時を開始させる。(S7)
Next, the drainage operation of the present invention will be described with reference to FIG.
First, when the drain switch 54 is turned on to start the drain mode (S1), the water tap 50 is closed (S2), and the relief valve 45 is opened. (S3)
Then, if the hot water supply mixing valve 28 is in the fully open state on the water side (S4), the drain plug 53 is opened (S5), and the water supply pipe 9 from the drain plug 53 to the hot water supply mixing valve 28 and the water in the water supply bypass pipe 29 If the hot water mixing valve 28 is not in the fully open state on the water side (S4), the hot water mixing valve 28 is switched to the fully open state on the water side (S6), and then the drain plug 53 is opened. (S5) Drainage of the water side of the water supply pipe 9 and the water supply bypass pipe 29 from the drain plug 53 to the hot water supply mixing valve 28 is started.
At the same time, the timing of a drainage timer (not shown) that counts the drainage time is started. (S7)
そして予め確認してある所定時間、つまり満タン状態の貯湯タンク2内のお湯を全て排水して空になる時間、例えばその時間を10分間とすると、排水タイマが計時をスタートさせてから10分間を計時した時(S8)、給湯混合弁28を水側全開の状態からお湯側全開の状態に切り替え(S9)、お湯側の給湯混合弁28、中間混合管27、出湯管8の排水を開始すると共に、排水タイマの計時を再度スタートさせる。(S10)   Then, if the predetermined time that has been confirmed in advance, that is, the time when all hot water in the hot water storage tank 2 is drained and drained, for example, 10 minutes, is 10 minutes after the drain timer starts counting. (S8), the hot water supply mixing valve 28 is switched from the water side fully open state to the hot water side fully open state (S9), and the hot water side hot water supply mixing valve 28, the intermediate mixing pipe 27, and the outlet pipe 8 are discharged. At the same time, the timer of the drainage timer is started again. (S10)
そして 予め確認してある所定時間、つまりお湯側の配管内に残っていたお湯が 全て排水されてお湯側の配管内が空になる時間、例えばその時間を3分間とすると、排水タイマが計時をスタートさせてから3分間を計時した時(S11)、排水が完了したと判断して給湯混合弁28をお湯側から水側全開の状態に切り替え(S12)、排水モードを終了するものである(S13)。   Then, if the predetermined time that has been confirmed in advance, that is, the time when all hot water remaining in the hot water side pipe is drained and the hot water side pipe is emptied, for example, 3 minutes, is set to 3 minutes. When 3 minutes have elapsed from the start (S11), it is determined that drainage has been completed, and the hot water supply mixing valve 28 is switched from the hot water side to the water side fully open state (S12), and the drainage mode is terminated ( S13).
また、その他の実施例として排水タイマの代わりに、排水管51に流水センサ53を設け、排水モード実施時に流水センサ53が排水の有無を検知することで貯湯タンク2内の空検知をするようにしたものについて図3にて説明する。   As another embodiment, instead of the drainage timer, a drainage water sensor 53 is provided in the drainage pipe 51, and when the drainage mode is performed, the running water sensor 53 detects the presence or absence of drainage to detect the empty in the hot water storage tank 2. This will be described with reference to FIG.
まず排水スイッチ54をON操作して排水モードを開始すると(S1)、給水栓50が閉成され(S2)、そして逃し弁45が開放される。(S3)
そして次に給湯混合弁28が水側全開の状態ならば(S4)、排水栓53が開放されて(S5)、排水栓53から給湯混合弁28までの給水管9、給水バイパス管29の排水を開始し、給湯混合弁28が水側全開の状態でなければ(S4)、給湯混合弁28を水側全開の状態に切り替えて(S6)、次に排水栓53を開放して(S5)、排水栓53から給湯混合弁28までの給水管9、給水バイパス管29の排水を開始する。
First, when the drain switch 54 is turned on to start the drain mode (S1), the water tap 50 is closed (S2), and the relief valve 45 is opened. (S3)
Then, if the hot water supply mixing valve 28 is in the fully open state on the water side (S4), the drain plug 53 is opened (S5), and the drainage of the water supply pipe 9 from the drain plug 53 to the hot water supply mixing valve 28 and the water supply bypass pipe 29 is performed. If the hot water mixing valve 28 is not in the water side fully open state (S4), the hot water mixing valve 28 is switched to the water side fully open state (S6), and then the drain plug 53 is opened (S5). Then, drainage of the water supply pipe 9 and the water supply bypass pipe 29 from the drain plug 53 to the hot water supply mixing valve 28 is started.
そして次に排水管51に設けた流水センサ53が排水管51内の排水を検知すると(S14)、給湯混合弁28が水側全開の状態で排水されていると判断し、流水センサ53が排水管51内の排水を検知しない場合、及び流水センサ53が排水管51内の排水を検知した後、流水センサ53が排水管51内の排水を検知しなくなったら(S15)、給湯混合弁28が水側全開の状態での排水が完了したと判断して、給湯混合弁28を水側全開の状態からお湯側全開の状態に切り替え(S9)、お湯側の給湯混合弁28、中間混合管27、出湯管8の排水を開始する。   Next, when the flowing water sensor 53 provided in the drain pipe 51 detects drainage in the drain pipe 51 (S14), it is determined that the hot water mixing valve 28 is drained in a state where the water side is fully opened, and the flowing water sensor 53 drains. When the drainage water in the pipe 51 is not detected, and after the running water sensor 53 detects the drainage in the drainage pipe 51 and the running water sensor 53 no longer detects the drainage in the drainage pipe 51 (S15), the hot water supply mixing valve 28 is turned on. It is determined that the drainage in the water side fully open state is completed, and the hot water supply mixing valve 28 is switched from the water side fully open state to the hot water side fully open state (S9), and the hot water side hot water supply mixing valve 28 and the intermediate mixing pipe 27 are switched. Then, drainage of the tapping pipe 8 is started.
そして次に流水センサ53が排水管51内の排水を検知すると(S16)、給湯混合弁28がお湯側全開の状態で排水されていると判断し、流水センサ53が排水管51内の排水を検知しない場合、及び流水センサ53が排水管51内の排水を検知した後、流水センサ53が排水管51内の排水を検知しなくなったら(S17)、給湯混合弁28がお湯側全開の状態での排水が完了したと判断して、給湯混合弁28をお湯水側全開の状態から水側全開の状態に切り替え(S12)、排水モードを終了するものである(S13)。   Then, when the running water sensor 53 detects drainage in the drain pipe 51 (S16), it is determined that the hot water mixing valve 28 is drained in a state where the hot water side is fully opened, and the running water sensor 53 drains the drainage in the drain pipe 51. If not detected, and after the flowing water sensor 53 detects drainage in the drainpipe 51, if the flowing water sensor 53 no longer detects drainage in the drainpipe 51 (S17), the hot water supply mixing valve 28 is in a state where the hot water side is fully open. Is determined to be completed, and the hot water mixing valve 28 is switched from the hot water side fully open state to the water side fully open state (S12), and the drain mode is terminated (S13).
この発明によれば、水側の配管部分の他、給湯混合弁28、中間混合管27、分岐中間混合管33、出湯管8等のお湯側の配管も含め、全ての配管の水が排水できるので冬季の施工後、引き渡しまでの期間や出張、旅行等で留守にする場合など長期間使用しない場合、凍結による配管破裂やホッパー、混合弁等の機能部品損傷を防止し、機具の信頼性が向上し、メンテナンスの回数等も削減することができる。   According to the present invention, in addition to the water-side pipe portion, the water in all pipes can be drained, including hot-water-side pipes such as the hot water supply mixing valve 28, the intermediate mixing pipe 27, the branch intermediate mixing pipe 33, and the hot water outlet pipe 8. Therefore, after winter construction, when it is not used for a long period of time, such as when it is left for delivery, business trips, travel, etc., it prevents the pipe from rupturing and damages to functional parts such as hoppers and mixing valves, and makes the equipment reliable. The number of maintenance can be reduced.
この発明の一実施形態の概略構成図。The schematic block diagram of one Embodiment of this invention. 同排水モードを示すフローチャート図。The flowchart figure which shows the drainage mode. 本発明のその他の実施例の排水モードを示すフローチャート図。The flowchart figure which shows the drainage mode of the other Example of this invention.
符号の説明Explanation of symbols
2 貯湯タンク
8 出湯管
9 給水管
28 給湯混合弁
45 逃し弁
51 排水管
52 排水栓
54 排水スイッチ
2 Hot water storage tank 8 Hot water discharge pipe 9 Water supply pipe 28 Hot water supply mixing valve 45 Relief valve 51 Drain pipe 52 Drain plug 54 Drain switch

Claims (4)

  1. 温水を貯湯する貯湯タンクと、該貯湯タンクに給水する給水管と、該給水管を開閉する給水栓と、該貯湯タンク内のお湯を貯湯タンクから出湯する出湯管と、貯湯タンク上部に設けられ貯湯タンク内の過圧を逃がす逃がし弁と、出湯管からのお湯と給水管からの水とを混合して給湯管に供給する給湯混合弁と、一端が貯湯タンクの底部に接続された排水管と、該排水管を開閉する排水栓とを備え、前記給水栓を閉成し逃がし弁を開放した後に給湯混合弁を水側全開の状態で排水栓を開放し、次に給湯混合弁をお湯側全開の状態に切り替えて排水を行い、その後給湯混合弁を水側全開の状態に戻す排水モードを行う排水スイッチを設けたことを特徴とする貯湯式給湯装置。 A hot water storage tank for storing hot water, a water supply pipe for supplying water to the hot water storage tank, a water tap for opening and closing the water supply pipe, a hot water outlet for discharging hot water in the hot water storage tank from the hot water storage tank, and an upper part of the hot water storage tank. A relief valve that releases overpressure in the hot water storage tank, a hot water mixing valve that mixes hot water from the hot water discharge pipe and water from the water supply pipe, and supplies the hot water supply pipe to the hot water supply pipe, and a drain pipe that has one end connected to the bottom of the hot water storage tank And a drain plug that opens and closes the drain pipe. After closing the water tap and opening the relief valve, the water tap is opened with the hot water mixing valve fully open, and then the hot water mixing valve is heated. A hot water storage type hot water supply apparatus provided with a drainage switch for performing a drainage mode for switching to a fully open side and draining, and then returning a hot water mixing valve to a fully open side.
  2. 温水を貯湯する貯湯タンクと、該貯湯タンクに給水する給水管と、該給水管を開閉する給水栓と、該貯湯タンク内のお湯を貯湯タンクから出湯する出湯管と、貯湯タンク上部に設けられ貯湯タンク内の過圧を逃がす逃がし弁と、一端が貯湯タンクの中間部分に接続された中間取り出し管と、出湯管からのお湯と中間取り出し管からのお湯とを混合して中間給湯管に供給する中間混合弁と、中間給湯管からのお湯と給水管から給水バイパス管を介して供給される給水とを混合して給湯管に供給する給湯混合弁と、一端が貯湯タンクの底部に接続された排水管と、該排水管を開閉する排水栓とを備え、前記給水栓を閉成し逃がし弁を開放した後に給湯混合弁を水側全開の状態で排水栓を開放し、次に給湯混合弁をお湯側全開の状態に切り替えて排水を行い、その後給湯混合弁を水側全開の状態に戻す排水モードを行う排水スイッチを設けたことを特徴とする貯湯式給湯装置。 A hot water storage tank for storing hot water, a water supply pipe for supplying water to the hot water storage tank, a water tap for opening and closing the water supply pipe, a hot water outlet for discharging hot water in the hot water storage tank from the hot water storage tank, and an upper part of the hot water storage tank. A relief valve that releases overpressure in the hot water storage tank, an intermediate take-out pipe with one end connected to the intermediate part of the hot water storage tank, hot water from the hot water pipe and hot water from the intermediate take-out pipe are mixed and supplied to the intermediate hot water pipe An intermediate mixing valve, a hot water mixing valve that mixes hot water from the intermediate hot water supply pipe and water supplied from the water supply pipe via the water supply bypass pipe, and one end is connected to the bottom of the hot water storage tank. A drain pipe and a drain plug for opening and closing the drain pipe. After the water tap is closed and the relief valve is opened, the hot water mixing valve is opened with the water side fully open, and then the hot water mixing is performed. Switch the valve to the hot water side fully open and drain Was carried out, then the hot water supply mixing valve hot water storage type water heater, characterized in that a drainage switch for draining mode to return to the state of the water side fully open.
  3. 所定時間を計時する排水タイマを設け、排水スイッチは排水モードを行う時に、給水栓を閉成し逃がし弁を開放した後に、給湯混合弁を水側全開の状態で排水栓を開放すると共に排水タイマの計時を開始し、排水タイマの計時が所定時間に達した時、給湯混合弁をお湯側全開の状態に切り替えて排水を行うと共に排水タイマの計時を再度開始し、排水タイマの計時が所定時間に達した時、給湯混合弁を水側全開の状態に戻す排水モードを行うことを特徴とする請求項1及び2記載の貯湯式給湯装置。 A drainage timer that keeps a predetermined time is provided, and when the drainage switch performs the drainage mode, after closing the faucet and opening the relief valve, the drainage tap is opened with the hot water mixing valve fully open on the water side and the drainage timer. When the time of the drainage timer reaches the predetermined time, the hot water mixing valve is switched to the hot water side fully open state to drain the water, and the time of the drainage timer is restarted. The hot water storage type hot water supply apparatus according to claim 1 or 2, wherein a drainage mode for returning the hot water supply mixing valve to the water side full open state is performed when the temperature reaches the value.
  4. 排水管に流水センサを設け、排水スイッチは排水モードを行う時に、給水栓を閉成し逃がし弁を開放した後に、給湯混合弁を水側全開の状態で排水栓を開放すると共に流水センサにて排水管の排水を検知し、流水センサが排水管の排水を検知しなくなった時、給湯混合弁をお湯側全開の状態に切り替えて排水を行い、その時流水センサにて排水管の排水を検知し、流水センサが排水管の排水を検知しなくなった時、給湯混合弁を水側全開の状態に戻す排水モードを行うことを特徴とする請求項1及び2記載の貯湯式給湯装置。 A drainage sensor is installed in the drainage pipe, and when the drainage switch is in drainage mode, after closing the faucet and opening the relief valve, open the drainage tap with the hot water mixing valve fully open on the water side and When the drainage of the drainage pipe is detected and the running water sensor no longer detects drainage of the drainage pipe, the hot water mixing valve is switched to the fully open state on the hot water side, and the drainage of the drainage pipe is detected by the running water sensor. The hot water storage type hot water supply apparatus according to claim 1 or 2, wherein when the running water sensor stops detecting the drainage of the drain pipe, the drainage mode is performed to return the hot water mixing valve to the water side fully open state.
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JP2011220645A (en) * 2010-04-14 2011-11-04 Corona Corp Heat-pump type water heater

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JP2010078189A (en) * 2008-09-24 2010-04-08 Denso Corp Hot water supply device
JP5248434B2 (en) * 2009-07-16 2013-07-31 株式会社コロナ Hot water storage bath water heater
JP5248433B2 (en) * 2009-07-16 2013-07-31 株式会社コロナ Hot water storage bath water heater
JP5275172B2 (en) * 2009-08-21 2013-08-28 株式会社コロナ Hot water storage water heater
JP5463808B2 (en) * 2009-09-07 2014-04-09 株式会社デンソー Water heater
JP2011085347A (en) * 2009-10-16 2011-04-28 Denso Corp Hot water supply device
JP5304602B2 (en) * 2009-11-11 2013-10-02 株式会社デンソー Hot water supply apparatus and control method thereof
CN103337267B (en) * 2013-07-16 2016-06-29 中广核工程有限公司 The drain valve of heater control method of nuclear power station, Apparatus and system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011220645A (en) * 2010-04-14 2011-11-04 Corona Corp Heat-pump type water heater

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