JP2010139174A

JP2010139174A - Storage water heater

Info

Publication number: JP2010139174A
Application number: JP2008316582A
Authority: JP
Inventors: Yusuke Matsumoto; 悠介松本; Hideyasu Fushie; 秀恭伏江; Fumio Watabe; 史生渡部
Original assignee: Corona Corp
Current assignee: Corona Corp
Priority date: 2008-12-12
Filing date: 2008-12-12
Publication date: 2010-06-24

Abstract

<P>PROBLEM TO BE SOLVED: To provide a storage water heater preventing breakdown of a boundary surface between high-temperature water and water within a hot water storage tank due to water supply. <P>SOLUTION: In a baffle board 22 provided in a lower part within the hot water storage tank 1, a plurality of inner water supply ports 23 are concentrically provided on the central side of the baffle board 22 and a plurality of outer water supply ports 24 are concentrically provided on the outer peripheral side of the inner water supply ports 23 to be paired with the inner water supply ports 23, so that openings 25, 26 of the inner and outer water supply ports 23, 24 oppose to each other. Thus, low-temperature running water from the openings 25 of the inner water supply ports 23 and low-temperature running water from the openings 26 of the outer water supply ports 24 are collided with each other and are made to gently flow upwardly while loosing momentum. As a result, this can prevent breakdown of the boundary surface within the hot water storage tank 1, and prevent part of the high-temperature water within the hot water storage tank 1 from becoming intermediate-temperature water due to water supply. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

この発明は、ヒートポンプ式給湯機や電気温水器等の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 such as a heat pump type hot water heater or an electric water heater.

従来よりこの種のものに於いては、例えば、貯湯タンク内に加熱された高温の湯水を貯湯し、貯湯タンクの上部より貯湯されている高温の湯水を給湯等に使用し、その使用した湯量分を貯湯タンクの下部より低温の水道水を流入し、最終的に貯湯タンク内に貯湯された高温の湯水を使い切ると、貯湯タンク内は全て低温の水道水が貯湯されている状態となる。 Conventionally, in this type, for example, hot hot water heated in a hot water storage tank is stored, hot hot water stored from the upper part of the hot water storage tank is used for hot water supply, and the amount of hot water used. When low-temperature tap water flows in from the lower part of the hot water storage tank and finally the hot hot water stored in the hot water storage tank is used up, all the hot water storage tank is in a state where low-temperature tap water is stored.

ところで、給湯等により貯湯タンク内の高温の湯水を使用していくと、貯湯タンクの上部は高温の湯水で、貯湯タンクの下部は低温の水道水という状態となり、その境目が温度が異なる境界面となるが、貯湯タンクの下部より貯湯タンク内に流入する低温の水道水の勢いにより、貯湯タンクの上部の高温のと貯湯タンクの下部の低温の水道水との境界面が壊されてしまい、高温の湯水と低温の水道水が混じって中温の湯水が生じてしまった。 By the way, when hot water in the hot water tank is used for hot water supply, etc., the upper part of the hot water tank becomes hot hot water and the lower part of the hot water tank becomes cold tap water, and the boundary is different at different temperatures. However, due to the momentum of the low-temperature tap water flowing into the hot water storage tank from the bottom of the hot water storage tank, the boundary surface between the hot water at the top of the hot water storage tank and the low temperature tap water at the bottom of the hot water storage tank is destroyed, Hot hot water and low-temperature tap water were mixed to produce medium-temperature hot water.

そこで、貯湯タンクを横置きにして使用するものでは、貯湯タンク底部に入水管と連通し給水を行う給水補助管を長手方向に延設して備え、更に給水補助管の上側には複数の小孔から成る給水孔を設けると共に、この給水孔上方には給水の方向を下方に向ける方向変更手段を備えたものがある。（例えば、特許文献１参照）
特開２００４−２９３８３６号公報 Therefore, in a case where the hot water storage tank is used in a horizontal position, a water supply auxiliary pipe that communicates with the water inlet pipe is provided in the longitudinal direction at the bottom of the hot water tank, and a plurality of small water supply pipes are provided above the water supply auxiliary pipe. While providing the water supply hole which consists of a hole, there exist some which provided the direction change means which orient | assigns the direction of water supply to the downward direction above this water supply hole. (For example, see Patent Document 1)
Japanese Patent Application Laid-Open No. 2004-293336

また、貯湯タンクを横置きにして使用するもので、貯湯タンク底部に入水管と連通し給水を行う給水補助管を長手方向に延設して備え、更に給水補助管には左右に広がる邪魔板を設けると共に、この邪魔板より下方の給水補助管には複数の小孔から成る給水孔を設けたものがある。（例えば、特許文献２参照）
特開２００４−９３０４０号公報 In addition, the hot water storage tank is used in a horizontal position, and a water supply auxiliary pipe is provided at the bottom of the hot water tank so as to communicate with the water inlet pipe in the longitudinal direction, and the water supply auxiliary pipe extends to the left and right. In addition, some water supply auxiliary pipes below the baffle plate are provided with water supply holes made up of a plurality of small holes. (For example, see Patent Document 2)
Japanese Patent Laid-Open No. 2004-93040

更に、貯湯タンクを縦置きにして使用するものでは、ポンプにより貯湯タンクの底部近傍に設置したポンプの吸込管より水を吸入し、貯湯タンク内の水を加熱源に循環させることによって加熱し、高温の湯を貯湯タンク内に貯湯するようにした給湯機で、貯湯タンクにお湯をためる貯湯運転時に、湯温が８０℃程度以上に水が加熱されると、加熱源に水に融解していた不純物質がスケールとして析出し、それが剥離して沸上戻し管を通って貯湯タンク内に送られ、そのスケールが貯湯タンク内を沈降して吸込管からポンプに吸い込まれて、ポンプ内部で詰まりを起こし、ポンプによる循環ができなくなると言う問題を解決するために、貯湯タンク内に多孔板をポンプの吸込管より上部に水平に設置したものがある。（例えば、特許文献３参照）
特開２００６−２７５４４５号公報 Furthermore, in the case of using a hot water storage tank in a vertical position, water is sucked from a pump suction pipe installed near the bottom of the hot water storage tank by a pump, and heated by circulating the water in the hot water storage tank to a heating source, In a hot water storage system that stores hot water in a hot water storage tank, when the hot water temperature is heated to about 80 ° C or higher during hot water storage operation in which hot water is stored in the hot water storage tank, the water is melted in the heating source. Impurities deposited as scale, peel off, pass through the boil-up return pipe and are sent into the hot water storage tank, and the scale settles in the hot water storage tank and is sucked into the pump from the suction pipe. In order to solve the problem of clogging and inability to circulate by the pump, there is a hot water storage tank in which a porous plate is installed horizontally above the suction pipe of the pump. (For example, see Patent Document 3)
JP 2006-275445 A

ところでこの従来のものでは、特許文献１のように給水の方向を下方に向ける方向変更手段を備えたり、特許文献２のように給水を行う給水補助管に左右に広がる邪魔板を設けたり、特許文献３のように貯湯タンク内にポンプの吸込管より上部に水平に多孔板を設置したりすることにより、貯湯タンクの下部から上部に向かう流れの発生を抑制でき、それにより貯湯タンクの上部の高温のお湯と貯湯タンクの下部の低温の水道水との境界面を壊わして、貯湯タンク内の高温の湯水と低温の水道水が混じって、貯湯タンク内の全てのお湯が中温の湯水になることは防止できるものの、貯湯タンクの上部まではいかないものの局所的な流れが貯湯タンク内に発生し、貯湯タンクの上部の高温の湯水と貯湯タンクの下部の低温の水道水との境界面が混じり合って、境界面の幅が大きくなる、つまり境界面に中温の湯水の層が広がってしまうという課題があった。 By the way, in this conventional one, it is provided with a direction changing means that directs the direction of water supply downward as in Patent Document 1, or a baffle plate that extends to the left and right is provided in a water supply auxiliary pipe that supplies water as in Patent Document 2, By installing a perforated plate horizontally in the hot water storage tank above the suction pipe of the pump as in Reference 3, the generation of a flow from the lower part of the hot water tank to the upper part can be suppressed, thereby Breaking the boundary between hot water and low-temperature tap water at the bottom of the hot water tank, hot water in the hot water tank and low-temperature tap water are mixed, and all hot water in the hot water tank becomes medium-temperature hot water. Although it can be prevented, a local flow that does not reach the top of the hot water tank occurs in the hot water tank, and the boundary surface between the hot water at the top of the hot water tank and the cold tap water at the bottom of the hot water tank is Match butt, the width of the boundary surface increases, there is a problem that spreads out hot water of a layer of medium temperature in other words the boundary surface.

この発明はこの点に着目し上記課題を解決する為、特にその構成を請求項１では、加熱手段で加熱された温水を貯湯する貯湯タンクと、該貯湯タンク上部に連通し高温水を出湯する出湯管と、前記貯湯タンク底部に連通し貯湯タンクに給水を補給する給水管と、前記貯湯タンク内の底部で貯湯タンクと給水管の接続部分の上方に設け、給水管から貯湯タンク内に給水される水が衝突する邪魔板を設けた貯湯式給湯装置に於いて、前記邪魔板はその全外周部分が貯湯タンク内と接するように設けられると共に、邪魔板の中心側には内側給水口が同心円状に複数設けられ、更にその内側給水口の外周側には内側給水口と対になるように外側給水口が同心円状に複数設けられ、前記内側給水口の開口と外側給水口の開口が向かい合うように、内側給水口の開口が邪魔板の反中心方向に向かって形成され、外側給水口の開口が邪魔板の中心方向に向かって形成されているものである。 The present invention focuses on this point and solves the above-mentioned problems. In particular, in the first aspect of the present invention, a hot water storage tank for storing hot water heated by the heating means and a hot water connected to the upper part of the hot water storage tank are discharged. A hot water discharge pipe, a water supply pipe that communicates with the bottom of the hot water storage tank and supplies water to the hot water storage tank, and is provided above the connecting portion of the hot water storage tank and the water supply pipe at the bottom of the hot water storage tank. In the hot water storage type hot water supply apparatus provided with a baffle plate that collides with water, the baffle plate is provided so that the entire outer peripheral portion thereof is in contact with the inside of the hot water storage tank, and an inner water supply port is provided at the center side of the baffle plate. A plurality of concentric circles are provided, and a plurality of outer water supply ports are provided concentrically so as to be paired with the inner water supply port on the outer peripheral side of the inner water supply port, and an opening of the inner water supply port and an opening of the outer water supply port are provided. Inside pay so as to face each other Opening of the mouth is formed toward the non-center of the baffle plate, in which the opening of the outer water supply port is formed toward the center of the baffle plate.

又請求項２に係る貯湯式給湯装置では、特にその構成を請求項１において、前記内側給水口と外側給水口は、貯湯タンクの上方に向かって凸形状に形成されたものである。 Further, in the hot water storage type hot water supply apparatus according to a second aspect, in particular, in the first aspect, the inner water supply port and the outer water supply port are formed in a convex shape toward the upper side of the hot water storage tank.

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において、前記内側給水口と外側給水口は、貯湯タンクの上方に向かって半ドーム状に形成されたものである。 Further, in the hot water storage type hot water supply apparatus according to claim 3, in particular, in the structure of claim 1, the inner water supply port and the outer water supply port are formed in a semi-dome shape toward the upper side of the hot water storage tank.

この発明の請求項１によれば、邪魔板の中心側には内側給水口が同心円状に複数設けられ、更にその内側給水口の外周側には内側給水口と対になるように外側給水口が同心円状に複数設けられ、前記内側給水口の開口と外側給水口の開口が向かい合うように、内側給水口の開口が邪魔板の反中心方向に向かって形成され、外側給水口の開口が邪魔板の中心方向に向かって形成されているので、内側給水口の開口から流れた低温の水道水と外側給水口の開口から流れた低温の水道水が衝突し合って互いに勢いを弱められながら、上方に向かって緩やかに流れ、それにより、貯湯タンクの上部の高温の湯水と貯湯タンクの下部の低温の水道水との境界面が混じり合うのが少なくなって、境界面の幅が大きくなるのを防止でき、貯湯タンクの上部の高温の湯水量が中温になることで減少してしまうのを少なくして高温水を高温水のまま最後まで良好に給湯することが出来るものである。 According to the first aspect of the present invention, a plurality of inner water supply ports are provided concentrically on the center side of the baffle plate, and the outer water supply ports are paired with the inner water supply ports on the outer peripheral side of the inner water supply ports. Are provided concentrically, and the inner water supply opening is formed in the direction opposite to the center of the baffle so that the opening of the inner water supply face and the opening of the outer water supply face each other. Since it is formed toward the center of the plate, low-temperature tap water that flows from the opening of the inner water supply port and low-temperature tap water that flows from the opening of the outer water supply port collide and weaken each other's momentum, It flows gently upwards, so that the boundary between the hot water at the top of the hot water tank and the cold tap water at the bottom of the hot water tank is less mixed, and the width of the boundary is increased. At the top of the hot water tank Hot water of temperature are those that can be successfully hot water with less from being reduced by being a medium-temperature hot water remains until the end of the hot water.

また、邪魔板はその全外周部分が貯湯タンク内と接するように設けられるので、邪魔板と貯湯タンクとの間に隙間はなく、貯湯タンクの底部から上部に向かって流れている低温の水道水は、全て邪魔板に形成された内側給水口の開口か、外側給水口の開口を通過して貯湯タンク上部に流れていくもので、給水管から貯湯タンク内に供給された水がそのまま貯湯タンク底部から上部に向かって流れることがなく、邪魔板の内側給水口か外側給水口を必ず通過し、確実に給水管から貯湯タンク内に供給された水の勢いを弱めることができるものである。 In addition, the baffle plate is provided so that the entire outer periphery of the baffle plate is in contact with the hot water storage tank, so there is no gap between the baffle plate and the hot water storage tank, and low-temperature tap water flowing from the bottom of the hot water storage tank toward the top. The water is supplied to the hot water storage tank through the opening of the inner water supply port formed on the baffle plate or the outer water supply port, and the water supplied from the water supply pipe to the hot water storage tank is used as it is. It does not flow from the bottom to the top, and must pass through the inner water supply port or the outer water supply port of the baffle plate, and can surely weaken the momentum of the water supplied from the water supply pipe into the hot water storage tank.

又本発明の請求項２に記載の貯湯式給湯装置によれば、請求項１に於いて、前記内側給水口と外側給水口は、貯湯タンクの上方に向かって凸形状に形成されたので、内側給水口の開口から流れた低温の水道水と外側給水口の開口から流れた低温の水道水が、内側給水口及び外側給水口の凸形状に案内されて、より確実に衝突し合い、それにより衝突しない水を無くして全ての水が互いに勢いを弱められながら、上方に向かって緩やかに流れ、それにより、貯湯タンクの上部の高温の湯水と貯湯タンクの下部の低温の水道水との境界面が混じり合うのが少なくなって、境界面の幅が大きくなるのを防止でき、貯湯タンクの上部の高温の湯水量が中温になることで減少してしまうのを少なくして高温水を高温水のまま最後まで良好に給湯することが出来るものである。 According to the hot water storage type hot water supply apparatus of the second aspect of the present invention, in the first aspect, the inner water supply port and the outer water supply port are formed in a convex shape toward the upper side of the hot water storage tank. Low temperature tap water flowing from the opening of the inner water supply port and low temperature tap water flowing from the opening of the outer water supply port are guided by the convex shapes of the inner water supply port and the outer water supply port, and collide more reliably. The water that does not collide is eliminated and all the water weakens each other and gradually flows upward, thereby the boundary between the hot water at the upper part of the hot water tank and the cold tap water at the lower part of the hot water tank. It is possible to prevent the width of the boundary surface from being increased by reducing the mixing of the surfaces, and reducing the amount of hot water at the top of the hot water storage tank from decreasing to a medium temperature, thereby increasing the temperature of the hot water. Good water supply to the end with water It is those that can be.

又本発明の請求項３に記載の貯湯式給湯装置によれば、請求項１に於いて、前記内側給水口と外側給水口は、貯湯タンクの上方に向かって半ドーム状に形成されたので、内側給水口の開口から流れた低温の水道水と外側給水口の開口から流れた低温の水道水が、内側給水口及び外側給水口の半ドーム状に案内されて、より確実に衝突し合い、それにより衝突しない水を無くして全ての水が互いに勢いを弱められながら、上方に向かって緩やかに流れ、それにより、貯湯タンクの上部の高温の湯水と貯湯タンクの下部の低温の水道水との境界面が混じり合うのが少なくなって、境界面の幅が大きくなるのを防止でき、貯湯タンクの上部の高温の湯水量が中温になることで減少してしまうのを少なくして高温水を高温水のまま最後まで良好に給湯することが出来るものである。 Moreover, according to claim 3 of the present invention, in the hot water storage type hot water supply apparatus according to claim 1, the inner water supply port and the outer water supply port are formed in a semi-dome shape toward the upper side of the hot water storage tank. The cold tap water that flows from the opening of the inner water inlet and the low-temperature tap water that flows from the opening of the outer water inlet are guided in the semi-dome shape of the inner water inlet and the outer water inlet, and collide more reliably. The water that does not collide thereby loses the momentum of each other and gradually flows upward, so that the hot water at the top of the hot water tank and the cold tap water at the bottom of the hot water tank It is possible to prevent the boundary surface of the hot water from being mixed, and to prevent the boundary surface from becoming wider, and to reduce the amount of hot water at the top of the hot water storage tank from being reduced to a medium temperature. Keep hot water in the hot water until the end One in which Rukoto can.

更に内側給水口の開口から流れた低温の水道水と外側給水口の開口から流れた低温の水道水が半ドーム状の形状により一部が下向きに方向を変え、それにより内側給水口及び外側給水口から上方に向かう低温の水道水が減少し、低温の水道水が大きな水流又は水の固まりとなって上昇することが阻止され、温水と水との境界面が破壊されるのを防止するものである。 Furthermore, the low-temperature tap water that flows from the opening of the inner water supply port and the low-temperature tap water that flows from the opening of the outer water supply port are partially turned downward due to the semi-dome shape, so that the inner and outer water supply ports Low temperature tap water going upward from the mouth is reduced, and the low temperature tap water is prevented from rising as a large water stream or a mass of water, preventing the interface between hot water and water from being destroyed It is.

更に内側給水口の開口から流れた低温の水道水と外側給水口の開口から流れた低温の水道水が半ドーム状の形状により一部が邪魔板の上面側に衝突することで、貯湯タンクの上部に向かう勢いが減少し、ゆっくりした速度で貯湯タンクの上部に向かって流れていくと共に、内側給水口の開口から流れた低温の水道水と外側給水口の開口から流れた低温の水道水が衝突し合ったところに向かって流れていくことで、内側給水口の開口から流れた低温の水道水と外側給水口の開口から流れた低温の水道水が衝突した後の水と、邪魔板の上面側に衝突した水とが干渉し合い、よりゆっくりした速度で貯湯タンクの上部に向かって流れていくものである。 Furthermore, the low temperature tap water flowing from the opening of the inner water supply port and the low temperature tap water flowing from the opening of the outer water supply port partially collide with the upper surface side of the baffle plate due to the semi-dome shape, so that the hot water storage tank The momentum toward the upper part decreases and flows toward the upper part of the hot water storage tank at a slow speed, while the low-temperature tap water that flows from the opening of the inner water supply port and the low-temperature tap water that flows from the opening of the outer water supply port By flowing toward the place where they collided, the cold tap water that flowed from the opening of the inner water supply port and the cold tap water that flowed from the opening of the outer water supply port collide with the baffle plate The water colliding with the upper surface side interferes and flows toward the upper part of the hot water storage tank at a slower speed.

次に、本発明に係る発明の一実施形態を図面に基づいて説明する。
１は円筒状の貯湯タンクで、ヒーポン室外機から成る加熱手段２を利用し、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するものであり、底部には給水を補給する給水管３が接続し、上部には貯湯した高温水を給湯栓（図示せず）等に出湯する出湯管４が接続されている。 Next, an embodiment of the present invention will be described with reference to the drawings.
1 is a cylindrical hot water storage tank, which uses heating means 2 comprising a heat-pump outdoor unit to boil hot water in the midnight hours when the unit price of contract power by time is low and store hot water at the bottom. A water supply pipe 3 for supplying water is connected, and a hot water discharge pipe 4 for discharging hot water stored in a hot water tap (not shown) or the like is connected to the upper part.

５は一方に出湯管４を、他方には給水管３から分岐した給水バイパス管６を、中央には給湯管７が接続した電動三方弁から成る混合弁で、出湯管４からの高温水と給水バイパス管６からの給水とを混合して、設定された給湯温度となるようにして供給する混合弁であり、出湯温度と給水温度と設定温度から、出湯管４の開度と給水バイパス管６の開度を調整するフィードフォワード制御するものである。 5 is a mixing valve comprising an electric three-way valve connected to a hot water supply pipe 4 on one side, a water supply bypass pipe 6 branched from the water supply pipe 3 on the other side, and a hot water supply pipe 7 on the center. It is a mixing valve that mixes the feed water from the feed water bypass pipe 6 and feeds it at a set hot water supply temperature. From the hot water temperature, the feed water temperature, and the set temperature, the opening degree of the hot water pipe 4 and the feed water bypass pipe The feedforward control for adjusting the opening degree of 6 is performed.

８は給水バイパス管６に備えられ給水温度を検知する給水サーミスタを兼ねる温度センサで、給湯時には給水温度を検知して混合弁５の開度を調整するものであり、又貯湯タンク１内の湯水境界層が、混合弁５より下方に位置する状態で、給湯停止して混合弁５を出湯管４と給水バイパス管６が連通する開度とした時に、貯湯タンク１内の高温水が釣り合おうとして直下対流を起こし、給水バイパス管６まで流入してしまう時には、この混合水温度を検知し、所定温度以上で水側である給水バイパス管６側を１００％開口状態に混合弁５を駆動させ、後は上記のフィードフォワード制御で混合弁５を制御するようにしたものである。 A temperature sensor 8 is also provided in the water supply bypass pipe 6 and serves as a water supply thermistor for detecting the temperature of the water supply. The temperature sensor 8 detects the temperature of the water supply during hot water supply and adjusts the opening of the mixing valve 5, and hot water in the hot water storage tank 1. When the boundary layer is located below the mixing valve 5, the hot water supply is stopped and the mixing valve 5 is set to an opening degree where the outlet pipe 4 and the water supply bypass pipe 6 communicate with each other, and the hot water in the hot water storage tank 1 is balanced. When the convection occurs directly below and flows into the feed water bypass pipe 6, the temperature of the mixed water is detected, and the feed valve 5 is driven to 100% open at the feed water bypass pipe 6 side which is the water side at a predetermined temperature or higher. Thereafter, the mixing valve 5 is controlled by the feedforward control described above.

９は貯湯タンク１と加熱手段２とを湯水が循環可能に接続する往き管１０と戻り管１１と循環ポンプ１２とで構成された循環回路である。
１３、１４、１５、１６は貯湯タンク１外周面の上下に備えられた貯湯温度センサであり、１７は給水管３途中に設けられた減圧弁であり、１８は出湯管４に備えられた圧力逃がし弁である。 Reference numeral 9 denotes a circulation circuit including an outward pipe 10, a return pipe 11, and a circulation pump 12 that connect the hot water storage tank 1 and the heating means 2 so that hot water can be circulated.
Reference numerals 13, 14, 15, and 16 are hot water storage temperature sensors provided above and below the outer peripheral surface of the hot water storage tank 1, 17 is a pressure reducing valve provided in the middle of the water supply pipe 3, and 18 is a pressure provided in the hot water discharge pipe 4. It is a relief valve.

１９はマイコンから成る制御回路で、入力側には、リモコン（図示せず）の温度設定部２０と、最上位置の貯湯温度センサ１３が出湯温度センサとして接続すると共に、温度センサ８が給水温度センサ及び混合水温度センサとして接続し、更に給湯管７に備えられ湯水の流れを検知することにより給湯の開始／停止を検知するフローセンサ２１が接続され、出力側には、混合弁５のステップモータ駆動量を制御することで、該混合弁５の開度を調整するようにしたものである。 Reference numeral 19 denotes a control circuit comprising a microcomputer. On the input side, a temperature setting unit 20 of a remote controller (not shown) and a hot water storage temperature sensor 13 at the uppermost position are connected as a hot water temperature sensor, and a temperature sensor 8 is a feed water temperature sensor. And a flow sensor 21 which is connected to the hot water supply pipe 7 and detects the start / stop of hot water supply by detecting the flow of hot water, and is connected to the output side as a step motor of the mixing valve 5. The opening of the mixing valve 5 is adjusted by controlling the driving amount.

２２は略円板状の邪魔板で、円板の全円周部分が貯湯タンク１と接するように貯湯タンク１内の下部に設けられ、円板の中心側には内側給水口２３が同心円状に複数設けられ、更にその内側給水口２３の外周側には内側給水口２３と対になるように外側給水口２４が同心円状に複数設けらている。 Reference numeral 22 denotes a substantially disc-shaped baffle plate, which is provided in the lower part of the hot water storage tank 1 so that the entire circumference of the disk is in contact with the hot water storage tank 1, and an inner water supply port 23 is concentrically formed at the center of the disk. A plurality of outer water supply ports 24 are provided concentrically on the outer peripheral side of the inner water supply port 23 so as to be paired with the inner water supply port 23.

前記内側給水口２３は貯湯タンク１の上方に向かって凸形状、例えば半ドーム状に形成され、開口２５が対向する外側給水口２４に向かって給水が流れるように邪魔板２２の反中心方向に設けられ、前記外側給水口２４は貯湯タンク１の上方に向かって凸形状、例えば半ドーム状に形成され、開口２６が対向する内側給水口２３に向かって給水が流れるように邪魔板２２の中心方向に設けらている。 The inner water supply port 23 is formed in a convex shape toward the upper side of the hot water storage tank 1, for example, in a semi-dome shape, and in the anti-center direction of the baffle plate 22 so that the water supply flows toward the outer water supply port 24 facing the opening 25. The outer water supply port 24 is formed in a convex shape toward the upper side of the hot water storage tank 1, for example, a semi-dome shape, and the center of the baffle plate 22 so that the water supply flows toward the inner water supply port 23 facing the opening 26. In the direction.

次にこの一実施形態の作動について説明する。
今、給湯栓を開けて給湯を開始すれば、これをフローセンサ２１が検知し、制御回路１９に温度設定部２０による設定温度を読み込ませ、温度センサ８による給水温度と、貯湯温度センサ１３による出湯温度とによって制御回路１９が演算して混合弁５の開度を決定し、この開度に成るように混合弁５を駆動させ、設定温度の給湯を行うものである。 Next, the operation of this embodiment will be described.
If the hot water supply tap is opened and the hot water supply is started, the flow sensor 21 detects this, and causes the control circuit 19 to read the temperature set by the temperature setting unit 20, and the water supply temperature by the temperature sensor 8 and the hot water storage temperature sensor 13 The control circuit 19 calculates the opening degree of the mixing valve 5 based on the temperature of the hot water, and drives the mixing valve 5 so that the opening degree is reached, thereby supplying hot water at a set temperature.

この時、貯湯タンク１の上部からタンク内の高温の湯水が出湯管４を通って混合弁５に供給されると同時に、貯湯タンク１の底部からタンク内に給水管３を通って低温の水道水が供給される。 At this time, hot hot water in the tank is supplied from the upper part of the hot water storage tank 1 to the mixing valve 5 through the hot water discharge pipe 4, and at the same time, the low temperature water supply is passed from the bottom of the hot water storage tank 1 to the tank through the water supply pipe 3. Water is supplied.

貯湯タンク１の底部からタンク内に供給された低温の水道水はその勢いにより貯湯タンク１の底部から上部に向かって流れ、貯湯タンク１下部に設けられた邪魔板２２に到達する。 Low-temperature tap water supplied into the tank from the bottom of the hot water storage tank 1 flows from the bottom to the top of the hot water storage tank 1 due to its momentum, and reaches a baffle plate 22 provided at the lower part of the hot water storage tank 1.

邪魔板２２はその円板の全円周部分が貯湯タンク１と接しているので、邪魔板２２と貯湯タンク１との間に隙間はなく、貯湯タンク１の底部から上部に向かって流れている低温の水道水は、全て邪魔板２２に形成された内側給水口２３の開口２５か、外側給水口２４の開口２６を通過して貯湯タンク１上部に流れていくものである。 Since the baffle plate 22 is in contact with the hot water storage tank 1 at its entire circumference, there is no gap between the baffle plate 22 and the hot water storage tank 1 and flows from the bottom of the hot water storage tank 1 toward the top. All the low-temperature tap water flows through the opening 25 of the inner water supply port 23 formed in the baffle plate 22 or the opening 26 of the outer water supply port 24 and flows to the upper part of the hot water storage tank 1.

この時、邪魔板２２の内側給水口２３及び外側給水口２４が形成されていないところに流れた低温の水道水は、邪魔板２２に当たって下向きに方向を変えて勢いが弱まり、邪魔板２２の内側給水口２３及び外側給水口２４が形成されているところに流れた低温の水道水は、半ドーム状の形状により一部が下向きに方向を変え、他の一部が内側給水口２３の開口２５から外側給水口２４に向かって流れ、叉、外側給水口２４の開口２６から内側給水口２３に向かって流れるものである。 At this time, the low-temperature tap water that has flowed to the place where the inner water supply port 23 and the outer water supply port 24 of the baffle plate 22 are not formed hits the baffle plate 22 and changes its direction downward, and the momentum is weakened. The low-temperature tap water that has flowed to the place where the water supply port 23 and the outer water supply port 24 are formed partly changes its direction downward due to the semi-dome shape, and the other part is the opening 25 of the inner water supply port 23. From the opening 26 of the outer water supply port 24 toward the inner water supply port 23.

それにより邪魔板２２の内側給水口２３及び外側給水口２４が形成されているところに流れた低温の水道水の一部が下向きに方向を変えることで、内側給水口２３及び外側給水口２４から上方に向かう低温の水道水が減少し、低温の水道水が大きな水流又は水の固まりとなって上昇することが阻止され、温水と水との境界面が破壊されるのを防止するものである。 As a result, a part of the low-temperature tap water that has flowed in the place where the inner water supply port 23 and the outer water supply port 24 of the baffle plate 22 are changed in the downward direction from the inner water supply port 23 and the outer water supply port 24. Low temperature tap water is reduced upward, and the low temperature tap water is prevented from rising as a large water stream or a mass of water, preventing the interface between hot water and water from being destroyed. .

そして内側給水口２３の開口２５から外側給水口２４に向かって流れた低温の水道水と、外側給水口２４の開口２６から内側給水口２３に向かって流れた低温の水道水とは、内側給水口２３と外側給水口２４が半ドーム状の形状をし、更にそれぞれの開口２５と開口２６とが対向していることにより、開口２５から流れた低温の水道水の一部と開口２６から流れた低温の水道水の一部が衝突し合って互いに勢いを弱められながら、上方に向かって緩やかに流れるものであり、叉その低温の水道水の他の一部が邪魔板２２の上面側に衝突することで、貯湯タンク１の上部に向かう勢いが減少し、ゆっくりした速度で貯湯タンク１の上部に向かって流れていくものである。 The low-temperature tap water that flows from the opening 25 of the inner water supply port 23 toward the outer water supply port 24 and the low-temperature tap water that flows from the opening 26 of the outer water supply port 24 toward the inner water supply port 23 are the inner water supply. Since the opening 23 and the outer water supply port 24 have a semi-dome shape, and the openings 25 and 26 are opposed to each other, a part of the low-temperature tap water flowing from the opening 25 flows from the opening 26. Some of the low-temperature tap water collides with each other and weakens each other, and gradually flows upward, and another part of the low-temperature tap water is on the upper surface side of the baffle plate 22. As a result of the collision, the momentum toward the upper part of the hot water storage tank 1 decreases, and it flows toward the upper part of the hot water storage tank 1 at a slow speed.

それにより、貯湯タンク１の上部の高温の湯水と貯湯タンク１の下部の低温の水道水との境界面が混じり合うのが少なくなって、境界面の幅が大きくなるのを防止でき、貯湯タンク１の上部の高温の湯水量が中温になることで減少してしまうのを少なくして高温水を高温水のまま最後まで良好に給湯することが出来るものである。 As a result, it is possible to prevent the boundary surface between the hot water in the upper part of the hot water storage tank 1 and the cold tap water in the lower part of the hot water storage tank 1 from being mixed, and to prevent the boundary surface from becoming wide. The amount of high-temperature hot water in the upper part of 1 can be reduced by decreasing to a medium temperature, and hot water can be supplied satisfactorily to the end while maintaining the high-temperature water.

尚、この一実施形態では内側給水口２３及び外側給水口２４を半ドーム状の形状としたが、これに限定されることなく、例えば邪魔板２２を厚くしてそれに斜めに孔を形成して内側給水口２３及び外側給水口２４を設け、それぞれの給水口を通過した低温の水道水がぶつかり合うようにしてもよい。 In this embodiment, the inner water supply port 23 and the outer water supply port 24 have a semi-dome shape. However, the present invention is not limited to this. For example, the baffle plate 22 is thickened and a hole is formed obliquely. An inner water supply port 23 and an outer water supply port 24 may be provided so that low-temperature tap water that has passed through the respective water supply ports collides with each other.

更にこの実施形態では、ヒ−トポンプ式の給湯機で説明したが、これに限定されることなく、電気ヒ−タを加熱手段とした電気温水器でも同様な効果が得られるものである。 Furthermore, in this embodiment, the heat pump type hot water heater has been described. However, the present invention is not limited to this, and an electric water heater using an electric heater as a heating means can provide the same effect.

この発明の一実施例を付した貯湯式給湯装置を示す概略説明図。BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing which shows the hot water storage type hot water supply apparatus which attached | subjected one Example of this invention. 同要部電気回路のブロック図。The block diagram of the principal part electric circuit. 同邪魔板の斜視図。The perspective view of a baffle plate. 同概略図。The schematic diagram.

符号の説明Explanation of symbols

１貯湯タンク
２加熱手段
３給水管
４出湯管
２２邪魔板
２３内側給水口
２４外側給水口
２５開口
２６開口 DESCRIPTION OF SYMBOLS 1 Hot water storage tank 2 Heating means 3 Water supply pipe 4 Hot water discharge pipe 22 Baffle plate 23 Inner water supply port 24 Outer water supply port 25 Opening 26 Opening

Claims

加熱手段で加熱された温水を貯湯する貯湯タンクと、該貯湯タンク上部に連通し高温水を出湯する出湯管と、前記貯湯タンク底部に連通し貯湯タンクに給水を補給する給水管と、前記貯湯タンク内の底部で貯湯タンクと給水管の接続部分の上方に設け、給水管から貯湯タンク内に給水される水が衝突する邪魔板を設けた貯湯式給湯装置に於いて、前記邪魔板はその全外周部分が貯湯タンク内と接するように設けられると共に、邪魔板の中心側には内側給水口が同心円状に複数設けられ、更にその内側給水口の外周側には内側給水口と対になるように外側給水口が同心円状に複数設けられ、前記内側給水口の開口と外側給水口の開口が向かい合うように、内側給水口の開口が邪魔板の反中心方向に向かって形成され、外側給水口の開口が邪魔板の中心方向に向かって形成されていることを特徴とする貯湯式給湯装置。 A hot water storage tank for storing hot water heated by the heating means, a hot water discharge pipe for discharging hot water connected to the upper part of the hot water storage tank, a water supply pipe for supplying water to the hot water storage tank connected to the bottom of the hot water storage tank, and the hot water storage In the hot water storage type hot water supply apparatus provided with a baffle plate provided at the bottom of the tank above the connecting portion of the hot water storage tank and the water supply pipe and colliding with water supplied from the water supply pipe into the hot water storage tank, the baffle plate is The entire outer peripheral portion is provided so as to be in contact with the hot water storage tank, and a plurality of inner water supply ports are provided concentrically on the center side of the baffle plate, and further, the outer peripheral side of the inner water supply port is paired with the inner water supply port. A plurality of outer water supply ports are provided concentrically, and the opening of the inner water supply port is formed in the direction opposite to the center of the baffle so that the opening of the inner water supply port faces the opening of the outer water supply port. The mouth opening is a baffle plate Hot water storage type water heater, characterized in that toward the center are formed.

前記内側給水口と外側給水口は、貯湯タンクの上方に向かって凸形状に形成されたことを特徴とする請求項１記載の貯湯式給湯装置。 The hot water storage type hot water supply apparatus according to claim 1, wherein the inner side water supply port and the outer side water supply port are formed in a convex shape toward the upper side of the hot water storage tank.

前記内側給水口と外側給水口は、貯湯タンクの上方に向かって半ドーム状に形成されたことを特徴とする請求項１記載の貯湯式給湯装置。 The hot water storage hot water supply apparatus according to claim 1, wherein the inner water supply port and the outer water supply port are formed in a semi-dome shape toward the upper side of the hot water storage tank.