JP2008095994A - Hot water supply system - Google Patents

Hot water supply system Download PDF

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JP2008095994A
JP2008095994A JP2006275424A JP2006275424A JP2008095994A JP 2008095994 A JP2008095994 A JP 2008095994A JP 2006275424 A JP2006275424 A JP 2006275424A JP 2006275424 A JP2006275424 A JP 2006275424A JP 2008095994 A JP2008095994 A JP 2008095994A
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hot water
water supply
pipe
pump
supply system
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JP4841384B2 (en
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Kazuji Hiraoka
和司 平岡
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Chugoku Electric Power Co Inc
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Chugoku Electric Power Co Inc
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0078—Recirculation systems

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  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Details Of Fluid Heaters (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot water supply system capable of preventing heat loss when hot water exists in piping, with respect to a problem that efficiency of a hot water supply system is not increased as a whole though heat efficiency of a heating device itself is increased, as the hot water is cooled during moving in the piping in the hot water supply system having long piping. <P>SOLUTION: In this hot water supply system 1 comprising a hot water storage tank 20 for storing hot water, and the hot water supply piping 40 for supplying hot water stored in the hot water storage tank 20 to a hot water supply opening, the hot water supply piping 40 is constituted to have a smaller diameter at a hot water supply opening side in comparison with a part at a hot water storage tank 20 side. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

貯湯タンクに貯えた温水を給湯配管を介して給湯する給湯システムに関する。   The present invention relates to a hot water supply system that supplies hot water stored in a hot water storage tank via a hot water supply pipe.

近年、大型店舗や集合住宅等での給湯用に、高効率の大型加熱装置で生成した温水を各使用箇所に送る配管を備えた給湯システムが数多く導入される。しかしながら、このような大規模な給湯システムでは、配管が長くなり配管に貯留されている温水が冷めてしまい、給湯口への温水の到着までに長時間を必要とすることから，多くの場合給湯配管内のお湯を常時循環しており，加熱装置自体の熱効率が高くとも給湯システム全体では効率が高くならないとの問題がある。   In recent years, many hot water supply systems equipped with piping for supplying hot water generated by a high-efficiency large-sized heating device to each use location are introduced for hot water supply in large stores and apartment houses. However, in such a large-scale hot water supply system, the hot water stored in the pipe becomes long and the hot water stored in the pipe is cooled, and it takes a long time to arrive at the hot water supply port. The hot water in the pipe is constantly circulated, and there is a problem that the efficiency of the whole hot water supply system does not increase even if the heat efficiency of the heating device itself is high.

また、常時循環をしない場合には，温水の使用をしばらくの間停止した後に温水の使用を再開したとき、配管内で冷めてしまった多量の水が存在することから、温水が出てくるまでに時間がかかるので、温水の使用者が待たされるとの問題もある。   If the water is not constantly circulated, the use of hot water is stopped for a while and then resumed. When there is a large amount of water that has cooled in the piping, Because it takes time, there is a problem that the user of hot water is kept waiting.

ちなみに、このような課題に対して特許文献１では、給湯配管がペアチューブ又は二重管であって、出湯開始直後にあっては一方の配管を介して温水を送水し、その後は両方の配管を介して温水を送水する技術が開示されている。
特開２０００−３５６４０２号公報 Incidentally, in Patent Document 1, for such a problem, the hot water supply pipe is a pair tube or a double pipe, and immediately after the start of the hot water, hot water is supplied through one pipe, and then both pipes are used. A technique for supplying warm water via a hot water is disclosed.
JP 2000-356402 A

本発明は、このような課題に対して、温水が配管内にあるときの熱損失を抑制するとともに断熱材等給湯配管のコストを低減することが可能な給湯システムを提供することを目的とする。   This invention aims at providing the hot water supply system which can reduce the cost of hot water supply piping, such as a heat insulating material, while suppressing the heat loss when warm water exists in a piping with respect to such a subject. .

第一の発明は、温水を貯留する貯湯タンクと、前記貯湯タンクに貯留された温水を給湯口へ供給するための給湯配管と前記給湯配管に接続され給湯口への配管を分岐させる給湯母管を備える給湯システムであって、
前記給湯配管は、前記貯湯タンク側の部位に比べて前記給湯口側の部位が小径となるように構成されていることを特徴とする給湯システムである。 The first invention includes a hot water storage tank for storing hot water, a hot water supply pipe for supplying hot water stored in the hot water storage tank to a hot water supply port, and a hot water supply pipe connected to the hot water supply pipe and branching the pipe to the hot water supply port A hot water supply system comprising:
The hot water supply pipe is a hot water supply system configured such that a portion on the hot water supply port side has a smaller diameter than a portion on the hot water storage tank side.

第二の発明は、前記給湯配管に、温水を加圧して前記給湯口側へ送り出すためのポンプを備えることを特徴とする第一の発明に記載の給湯システムである。   A second aspect of the invention is the hot water supply system according to the first aspect of the invention, wherein the hot water supply pipe is provided with a pump for pressurizing hot water and sending it to the hot water supply port side.

第三の発明は、前記給湯配管は、前記ポンプよりも前記給湯口側の部位が、前記ポンプよりも前記貯湯タンク側の部位に比べて小径となるように構成されていることを特徴とする第二の発明に記載の給湯システムである。   In a third aspect of the present invention, the hot water supply pipe is configured such that a portion of the hot water supply port side of the pump has a smaller diameter than a portion of the hot water storage tank side of the pump. It is a hot-water supply system as described in 2nd invention.

第四の発明は、前記給湯配管の前記給湯口近傍に設置した給湯口への配管を分岐させる給湯母管部位と、前記貯湯タンクとを接続する循環配管を備えることを特徴とする第一から第三の発明のうち何れかに記載の給湯システムである。   4th invention is provided with the circulation piping which connects the hot water supply pipe | tube part which branches the piping to the hot water supply port installed in the vicinity of the hot water supply port of the hot water supply piping, and the hot water storage tank from the first It is a hot-water supply system in any one of 3rd invention.

第五の発明は、前記給湯母管の水温が、第１の所定温度を下回った場合はポンプを起動し、前記第１の所定温度より高い第２の所定温度を上回った場合はポンプを停止する温度制御手段を備えることを特徴とする第一から第四の発明のうち何れかに記載の給湯システムである。   According to a fifth aspect of the present invention, the pump is started when the water temperature of the hot water supply main pipe is lower than the first predetermined temperature, and is stopped when the water temperature is higher than the second predetermined temperature higher than the first predetermined temperature. The hot water supply system according to any one of the first to fourth inventions, further comprising a temperature control means for performing the operation.

第六の発明は、前記温度制御手段が、前記給湯母管内の水温に応じてポンプの駆動を切り換え可能な温度継電器であることを特徴とする第一から第五の発明のうち何れかに記載の給湯システムである。   According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the temperature control means is a temperature relay capable of switching the driving of the pump in accordance with the water temperature in the hot water supply main pipe. It is a hot water supply system.

第七の発明は、前記給湯母管の圧力が、第１の所定圧力を下回った場合はポンプを起動し、前記第１の所定圧力より高い第２の所定圧力を上回った場合はポンプを停止する圧力制御手段を備えることを特徴とする第一から第六の発明のうち何れかに項記載の給湯システムである。   The seventh aspect of the invention starts the pump when the pressure of the hot water supply main pipe falls below the first predetermined pressure, and stops the pump when the pressure exceeds the second predetermined pressure higher than the first predetermined pressure. A hot water supply system according to any one of the first to sixth inventions, comprising pressure control means for performing the above operation.

第八の発明は、前記圧力制御手段が、前記給湯母管内の圧力に応じてポンプの駆動を切り換え可能な圧力継電器であることを特徴とする第一から第七の発明のうち何れかに記載の給湯システムである。   The eighth invention is the pressure relay according to any one of the first to seventh inventions, wherein the pressure control means is a pressure relay capable of switching the driving of the pump in accordance with the pressure in the hot water supply main pipe. It is a hot water supply system.

第九の発明は、前記ポンプをバイパスする連成管を備えることを特徴とする第一から第八の発明のうち何れかに記載の給湯システムである。   A ninth aspect of the present invention is the hot water supply system according to any one of the first to eighth aspects, further comprising a compound pipe that bypasses the pump.

本発明によれば、温水が配管内にあるときの熱損失を抑制することが可能な給湯システムを提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the hot water supply system which can suppress the heat loss when warm water exists in piping can be provided.

図１は、本発明の一実施形態である給湯システム１の全体構成図である。同図に示すように、本実施形態の給湯システム１は、加熱器１０、貯湯タンク２０、ポンプ３０、給湯配管４０、給湯母管５０、給湯口６０、循環配管７０、制御部８０などを備える。   FIG. 1 is an overall configuration diagram of a hot water supply system 1 according to an embodiment of the present invention. As shown in the figure, the hot water supply system 1 of the present embodiment includes a heater 10, a hot water storage tank 20, a pump 30, a hot water supply pipe 40, a hot water supply pipe 50, a hot water supply port 60, a circulation pipe 70, a control unit 80, and the like. .

加熱器１０は、水道水等の冷水を加熱して温水を生成する機器であって、例えば、ヒートポンプ、ガス焚き加熱器、又は電気ヒータ加熱器などである。   The heater 10 is an apparatus that generates hot water by heating cold water such as tap water, and is, for example, a heat pump, a gas-fired heater, or an electric heater heater.

貯湯タンク２０は、加熱器１０で生成された温水を貯留するタンクである。   The hot water storage tank 20 is a tank for storing hot water generated by the heater 10.

ポンプ３０は、貯湯タンク２０に貯留されている温水を給湯母管５０や給湯口６０へ圧送するものであり、パルス振幅波形変調方式のインバータポンプのように水の使用量の多少によらず水圧を一定にできるタイプのものを用いるのが好ましい。なお、ポンプ３０は、貯湯タンク２０と給湯配管４０との接続箇所に設けられていてもよく、また給湯配管４０の途中に設けられていてもよい。   The pump 30 pumps hot water stored in the hot water storage tank 20 to the hot water supply pipe 50 and the hot water supply port 60, and the water pressure does not depend on the amount of water used, like a pulse amplitude waveform modulation type inverter pump. It is preferable to use a type that can maintain a constant value. The pump 30 may be provided at a connection location between the hot water storage tank 20 and the hot water supply pipe 40 or may be provided in the middle of the hot water supply pipe 40.

給湯配管４０は、貯湯タンク２０から給湯母管５０へ温水を送る配管である。給湯配管４０および給湯母管５０は、温水が冷めにくいように、断熱材で蔽うのが好ましい。   The hot water supply pipe 40 is a pipe that sends hot water from the hot water storage tank 20 to the hot water supply main pipe 50. The hot water supply pipe 40 and the hot water supply mother pipe 50 are preferably covered with a heat insulating material so that the hot water is not easily cooled.

ポンプ３０が給湯配管４０の途中に設置されている場合、ポンプ３０と給湯母管５０との間の給湯配管４０ｂは、貯湯タンク２０とポンプ３０との間の給湯配管４０ａよりも細くなっており、配管の距離当りの表面積が小さくなっている。このため、給湯配管４０ｂの断面積も小さくなるが、それを補うべく、ポンプ３０で加圧することにより温水の流速を上げて、給湯口６０で必要とする給湯量を確保している。なお、ポンプ３０は、基本的には給湯口６０での温水の使用等により給湯配管４０ｂ内又は給湯母管５０内の水圧が低下した場合に駆動し、給湯口６０での温水の使用停止等により給湯配管４０ｂ，給湯母管５０内の水圧が所定の圧力となっている場合は駆動を停止するよう制御する。   When the pump 30 is installed in the middle of the hot water supply pipe 40, the hot water supply pipe 40 b between the pump 30 and the hot water supply mother pipe 50 is thinner than the hot water supply pipe 40 a between the hot water storage tank 20 and the pump 30. The surface area per pipe distance is small. For this reason, although the cross-sectional area of the hot water supply pipe 40b is reduced, in order to compensate for this, the hot water flow rate is increased by pressurizing with the pump 30, and the required hot water supply amount is secured at the hot water supply port 60. The pump 30 is basically driven when the water pressure in the hot water supply pipe 40b or the hot water supply main pipe 50 is reduced due to the use of hot water at the hot water supply port 60, etc., and the use of hot water at the hot water supply port 60 is stopped. Therefore, when the water pressure in the hot water supply pipe 40b and the hot water supply main pipe 50 is a predetermined pressure, the driving is controlled to stop.

ポンプ３０の前後の給湯配管４０ａ、４０ｂの間を小断面の連成管１００でバイパスをかけ導通状態にすることにより，給湯口６０での温水の使用停止時において貯湯タンク２０と同じ水圧を給湯母管５０にかけるようにすることも可能であり、この場合、給湯口６０で少量使用する場合はポンプ３０の駆動を省略できる。なお、チェッキバルブ１０１を循環配管７０及び連成管１００の適正な位置に設置することでポンプ駆動による逆流を防止することができる。   By bypassing the hot water supply pipes 40a and 40b before and after the pump 30 with a small cross-section compound pipe 100, the hot water is supplied with the same water pressure as the hot water storage tank 20 when hot water is stopped at the hot water supply port 60. It is also possible to apply to the mother pipe 50. In this case, when a small amount is used at the hot water supply port 60, the driving of the pump 30 can be omitted. In addition, the backflow by a pump drive can be prevented by installing the check valve 101 at an appropriate position of the circulation pipe 70 and the coupling pipe 100.

給湯母管５０は、複数の給湯口６０（例えば、集合住宅であれば各戸毎）に共通の配管であって、それらの給湯口６０の近傍に設置される。給湯母管５０には、温度計５２が備えられており、これにより給湯母管５０内の温水の温度Ｔを検出する。   The hot water supply main pipe 50 is a pipe common to a plurality of hot water outlets 60 (for example, each house in an apartment house), and is installed in the vicinity of the hot water outlets 60. The hot water supply mother pipe 50 is provided with a thermometer 52, and thereby detects the temperature T of hot water in the hot water supply mother pipe 50.

循環配管７０は、貯湯タンク２０と給湯配管４０ｂの給湯口６０近傍の部位給湯母管５０等とを接続する配管である。循環配管７０は、給湯配管４０及び給湯母管５０内の温水が冷めてしまうのを防止するために、給湯配管４０及び給湯母管５０内の温水を給湯タンク２０に戻すことにより、温水を循環させる小径管の管路である。循環配管７０も、給湯配管４０と同様に、温水が冷めにくいように断熱材で蔽うのが好ましい。   The circulation pipe 70 is a pipe that connects the hot water storage tank 20 to the hot water supply pipe 50 in the vicinity of the hot water supply port 60 of the hot water supply pipe 40b. The circulation pipe 70 circulates the hot water by returning the hot water in the hot water supply pipe 40 and the hot water supply mother pipe 50 to the hot water supply tank 20 in order to prevent the hot water in the hot water supply pipe 40 and the hot water supply mother pipe 50 from being cooled. This is a small diameter pipe. As with the hot water supply pipe 40, the circulation pipe 70 is preferably covered with a heat insulating material so that the hot water is not easily cooled.

圧力センサー９０は、給湯母管５０内の圧力を測定する（以下、測定した圧力値を「圧力Ｐ」と言う）。制御部８０は、圧力Ｐに基づき、ポンプ３０の駆動と停止の制御を行う。すなわち、制御部８０は、圧力Ｐが所定の圧力Ｐｕを越えるとポンプ３０を停止させ、圧力Ｐが圧力Ｐl以下であればポンプ３０を駆動させる。さらに、給湯母管５０には圧力調整タンク９１が接続されており、圧力調整タンク９１内の圧力が圧力Ｐｕを越え一定の値に達すると安全弁９２が開き、給湯母管５０内の圧力が安全な値以内に保たれるよう調整する。なお、圧力センサー９０に代えて、給湯母管５０内の圧力に応じて接点が開閉する圧力継電器を給湯母管５０設けて、この圧力継電器によりポンプ３０の駆動・停止を制御してもよい。   The pressure sensor 90 measures the pressure in the hot water supply main pipe 50 (hereinafter, the measured pressure value is referred to as “pressure P”). The control unit 80 controls driving and stopping of the pump 30 based on the pressure P. That is, the control unit 80 stops the pump 30 when the pressure P exceeds the predetermined pressure Pu, and drives the pump 30 when the pressure P is equal to or lower than the pressure Pl. Further, a pressure adjustment tank 91 is connected to the hot water supply main pipe 50. When the pressure in the pressure adjustment tank 91 exceeds the pressure Pu and reaches a certain value, the safety valve 92 is opened, and the pressure in the hot water supply main pipe 50 is safe. Adjust so that it is kept within a certain range. Instead of the pressure sensor 90, a hot water supply main pipe 50 may be provided with a pressure relay whose contacts are opened and closed according to the pressure in the hot water supply main pipe 50, and the driving / stopping of the pump 30 may be controlled by this pressure relay.

ところで、給湯口６０で温水を使用しない場合であっても、給湯母管５０内の温水が冷めたときは、ポンプ３０が駆動することにより、温水は配管４０と給湯母管５０と貯湯タンク２０と循環配管７０との間を循環する。すなわち、制御部８０は、温度計５２が検出した水温Ｔに基づき、ポンプ３０の駆動と停止の制御を行う。より具体的には、制御部８０は、給湯母管５０内の温水の温度がある所定の温度Ｔａ（例えば４０℃）未満となった場合はポンプ３０を駆動させ、給湯母管５０内の温水の温度が別の所定の温度Ｔｂ（Ｔｂ≧Ｔａであって、例えば５０℃）以上となった場合はポンプ３０を停止させる。なお、温度計５２に代えて、給湯母管５０内の温度に応じて接点が開閉する温度継電器を給湯母管５０に設けて、この温度継電器によりポンプ３０の駆動・停止を制御してもよい。   By the way, even when hot water is not used at the hot water supply port 60, when the hot water in the hot water supply main pipe 50 is cooled, the pump 30 is driven so that the hot water is supplied to the pipe 40, the hot water supply main pipe 50, and the hot water storage tank 20. And the circulation pipe 70 are circulated. That is, the control unit 80 controls the driving and stopping of the pump 30 based on the water temperature T detected by the thermometer 52. More specifically, the control unit 80 drives the pump 30 when the temperature of the hot water in the hot water supply main pipe 50 becomes lower than a predetermined temperature Ta (for example, 40 ° C.), and the hot water in the hot water supply main pipe 50 is driven. When the temperature becomes equal to or higher than another predetermined temperature Tb (Tb ≧ Ta, for example, 50 ° C.), the pump 30 is stopped. Instead of the thermometer 52, a temperature relay whose contact is opened and closed according to the temperature in the hot water supply main pipe 50 may be provided in the hot water supply main pipe 50, and the drive / stop of the pump 30 may be controlled by this temperature relay. .

以上の通り、本実施形態の給湯システム１によれば、給湯配管４０を細くするとともに、ポンプ３０で温水を加圧して給湯配管４０に送り込むことで、給湯配管４０の表面積を小さくしつつ、給湯配管４０内での温水の流速をあげることができる。これにより、給湯配管４０の温水流量を確保しながら、温水からの放熱面積を小さくすることができ、もって温水が配管内にあるときの熱損失を抑制することができる。   As described above, according to the hot water supply system 1 of the present embodiment, the hot water supply pipe 40 is thinned, and hot water is pressurized by the pump 30 and fed into the hot water supply pipe 40, thereby reducing the surface area of the hot water supply pipe 40. The flow rate of warm water in the pipe 40 can be increased. Thereby, while ensuring the hot water flow rate of the hot water supply pipe 40, the heat radiation area from the hot water can be reduced, and thus heat loss when the hot water is in the pipe can be suppressed.

具体的には、給湯配管での放熱量は、給湯配管の内外の温度差を一定と仮定すると、温水の流量が一定の場合、次のように計算することができる。すなわち、式（１）に示す通り、給湯配管４０での放熱量Ｑは、給湯配管４０の表面積Ｓに比例し、温水の給湯配管４０内滞留時間Ｔに比例する。
Ｑ∝Ｓ・Ｔ ・・・（１）
ここで、配管表面積Ｓは給湯配管４０の半径Ｒに比例する（Ｓ∝２πＲ）。また、温水の流量が一定であるため流速は給湯配管４０の断面積に反比例する、すなわち半径Ｒの二乗に反比例するので、温水の滞留時間Ｔは半径Ｒの二乗に比例する（Ｔ∝Ｒ２）。これらを式（１）に代入すると、式（２）に示す通りとなる。
Ｑ∝２πＲ３ ・・・（２）
式（２）が示す通り、半径Ｒが大きくなれば、給湯配管４０ｂからの放熱量Ｑは径Ｒの三乗に比例して増加する。よって、給湯配管４０ｂを細くすることで、温水が給湯配管４０ｂ内にあるときの熱損失を効果的に抑制することができる。 Specifically, assuming that the temperature difference between the inside and outside of the hot water supply pipe is constant, the heat radiation amount in the hot water supply pipe can be calculated as follows when the flow rate of hot water is constant. That is, as shown in Expression (1), the heat dissipation amount Q in the hot water supply pipe 40 is proportional to the surface area S of the hot water supply pipe 40 and is proportional to the residence time T in the hot water hot water supply pipe 40.
Q∝S · T (1)
Here, the pipe surface area S is proportional to the radius R of the hot water supply pipe 40 (S∝2πR). Further, since the flow rate of the hot water is constant, the flow rate is inversely proportional to the cross-sectional area of the hot water supply pipe 40, that is, inversely proportional to the square of the radius R, so the residence time T of the warm water is proportional to the square of the radius R (T∝R 2 ). Substituting these into equation (1) results in equation (2).
Q ∝ 2πR 3 (2)
As shown in the equation (2), when the radius R increases, the heat dissipation amount Q from the hot water supply pipe 40b increases in proportion to the cube of the diameter R. Therefore, heat loss when hot water is in the hot water supply pipe 40b can be effectively suppressed by making the hot water supply pipe 40b thinner.

さらに、一般に断熱材は高価であるが、給湯配管４０ｂを細ければ、断熱材の量も削減することができ、もって給湯システム１のコストを削減することができる。   Furthermore, although the heat insulating material is generally expensive, if the hot water supply pipe 40b is thin, the amount of the heat insulating material can be reduced, and the cost of the hot water supply system 1 can be reduced.

一方、循環配管７０を設けることで、給湯口６０で温水を使用しない場合に給湯母管５０内の温度が所定の値以下になるとポンプ３０が作動して、給湯配管４０及び給湯母管５０内の温水を給湯タンク２０に戻して温水を循環させる。給湯母管５０内の温水が冷めてしまっても、貯湯タンク２０内の熱い温水が給湯配管４０等に供給されることにより、給湯配管４０及び給湯母管５０内の温水を常時循環することなく所定の温度以上に保つことができる。よって、温水の利用者は、しばらく時間をおいて温水を使用する場合であっても、給湯口６０を開ければ直ちに温水を使用することができる。   On the other hand, by providing the circulation pipe 70, when hot water is not used at the hot water supply port 60, the pump 30 operates when the temperature in the hot water supply pipe 50 becomes a predetermined value or less, and the hot water supply pipe 40 and the hot water supply pipe 50 The hot water is returned to the hot water supply tank 20 to circulate the hot water. Even when the hot water in the hot water supply pipe 50 is cooled, the hot hot water in the hot water storage tank 20 is supplied to the hot water supply pipe 40 and the like without constantly circulating the hot water in the hot water supply pipe 40 and the hot water supply pipe 50. It can be kept above a predetermined temperature. Therefore, even if it is a case where the user of warm water uses warm water for a while after opening the hot-water supply port 60, it can use warm water immediately.

また、給湯口６０で温水を使用しない場合にあっても、給湯配管４０ｂが細くすることにより給湯配管４０ｂの表面積を小さくすることができ、よって給湯配管４０ｂの内部に滞留しているお湯からの放熱量を削減することができる。また、給湯システムの使用状況によっては、ポンプ３０を作動させて給湯配管４０ｂに僅かな圧力をかけることで常時少量のお湯を循環させておくことも勿論可能である。   Even when hot water is not used at the hot water supply port 60, the hot water supply pipe 40 b can be made thinner to reduce the surface area of the hot water supply pipe 40 b, and thus from the hot water staying inside the hot water supply pipe 40 b. The amount of heat radiation can be reduced. In addition, depending on the use condition of the hot water supply system, it is of course possible to circulate a small amount of hot water at all times by operating the pump 30 and applying a slight pressure to the hot water supply pipe 40b.

さらに、給湯口６０でしばらく温水を使用せず、給湯配管４０内の温水が冷めてしまった場合であっても、給湯配管４０ｂが細ければ給湯口６０を開くと同時に貯湯タンク２０の温かい温水は速い流速によりすばやく給湯口６０に到達するので、利用者は給湯口６０であまり待たされることなく温水を利用することができる。   Furthermore, even if hot water is not used at the hot water supply port 60 for a while and the hot water in the hot water supply piping 40 has cooled, if the hot water supply piping 40b is thin, the hot water supply port 60 is opened and at the same time the warm hot water in the hot water storage tank 20 is heated. Can quickly reach the hot water supply port 60 at a high flow rate, so that the user can use hot water without having to wait much at the hot water supply port 60.

なお、以上の実施形態の説明は、本発明の理解を容易にするためのものであり、本発明を限定するものではない。本発明はその趣旨を逸脱することなく、変更、改良され得ると共に本発明にはその等価物が含まれることは勿論である。   In addition, the description of the above embodiment is for making an understanding of this invention easy, and does not limit this invention. It goes without saying that the present invention can be changed and improved without departing from the gist thereof, and that the present invention includes equivalents thereof.

本発明の実施形態である給湯システム１の全体構成図である。1 is an overall configuration diagram of a hot water supply system 1 according to an embodiment of the present invention.

符号の説明Explanation of symbols

１ 給湯システム
１０ 加熱器
２０ 給湯タンク
３０ ポンプ
４０ 給湯配管
５０ 給湯母管
６０ 給湯口
７０ 循環配管
８０ 制御部
９０ 圧力調整弁 DESCRIPTION OF SYMBOLS 1 Hot-water supply system 10 Heater 20 Hot-water supply tank 30 Pump 40 Hot-water supply piping 50 Hot-water supply main pipe 60 Hot-water supply port 70 Circulation piping 80 Control part 90 Pressure adjustment valve

Claims (9)

温水を貯留する貯湯タンクと、前記貯湯タンクに貯留された温水を給湯口へ供給するための給湯配管と前記給湯配管に接続され給湯口への配管を分岐させる給湯母管を備える給湯システムであって、
前記給湯配管は、前記貯湯タンク側の部位に比べて前記給湯口側の部位が小径となるように構成されていることを特徴とする給湯システム。 A hot water supply system comprising a hot water storage tank for storing hot water, a hot water supply pipe for supplying hot water stored in the hot water storage tank to a hot water supply port, and a hot water supply pipe connected to the hot water supply pipe for branching the pipe to the hot water supply port. And
The hot water supply system is configured such that the hot water supply port side portion has a smaller diameter than the hot water storage tank side portion. 前記給湯配管に、温水を加圧して前記給湯口側へ送り出すためのポンプを備えることを特徴とする請求項１記載の給湯システム。   The hot water supply system according to claim 1, further comprising a pump for pressurizing hot water to the hot water supply pipe and feeding the hot water to the hot water supply port side. 前記給湯配管は、前記ポンプよりも前記給湯口側の部位が、前記ポンプよりも前記貯湯タンク側の部位に比べて小径となるように構成されていることを特徴とする請求項２記載の給湯システム。   The hot water supply pipe according to claim 2, wherein the hot water supply pipe is configured such that a portion closer to the hot water supply port than the pump has a smaller diameter than a portion closer to the hot water storage tank than the pump. system. 前記給湯配管の前記給湯口近傍の部位と、前記貯湯タンクとを接続する循環配管を備えることを特徴とする請求項１〜３のうち何れか１項記載の給湯システム。   The hot water supply system according to any one of claims 1 to 3, further comprising a circulation pipe that connects a portion of the hot water supply pipe near the hot water supply port and the hot water storage tank. 前記給湯母管の水温が、第１の所定温度を下回った場合はポンプを起動し、前記第１の所定温度より高い第２の所定温度を上回った場合はポンプを停止する温度制御手段を備えることを特徴とする請求項１〜４のうち何れか１項記載の給湯システム。   Temperature control means for starting the pump when the water temperature of the hot water supply main pipe is lower than a first predetermined temperature and stopping the pump when the water temperature exceeds a second predetermined temperature higher than the first predetermined temperature; The hot water supply system according to any one of claims 1 to 4, wherein 前記温度制御手段は、前記給湯母管内の水温に応じてポンプの駆動を切り換え可能な温度継電器であることを特徴とする請求項１〜５のうち何れか１項記載の給湯システム。   The hot water supply system according to any one of claims 1 to 5, wherein the temperature control means is a temperature relay capable of switching a drive of a pump according to a water temperature in the hot water supply main pipe. 前記給湯母管の圧力が、第１の所定圧力を下回った場合はポンプを起動し、前記第１の所定圧力より高い第２の所定圧力を上回った場合はポンプを停止する圧力制御手段を備えることを特徴とする請求項１〜６のうち何れか１項記載の給湯システム。   Pressure control means for starting the pump when the pressure of the hot water supply main pipe is lower than a first predetermined pressure and stopping the pump when the pressure exceeds a second predetermined pressure higher than the first predetermined pressure. The hot water supply system according to any one of claims 1 to 6, wherein 前記圧力制御手段は、前記給湯母管内の圧力に応じてポンプの駆動を切り換え可能な圧力継電器であることを特徴とする請求項１〜７のうち何れか１項記載の給湯システム。   The hot water supply system according to any one of claims 1 to 7, wherein the pressure control means is a pressure relay capable of switching a drive of a pump in accordance with a pressure in the hot water supply main pipe. 前記ポンプをバイパスする連成管を備えることを特徴とする請求項１〜８のうち何れか１項記載の給湯システム。   The hot water supply system according to any one of claims 1 to 8, further comprising a compound pipe that bypasses the pump.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014049814A1 (en) * 2012-09-28 2014-04-03 三菱電機株式会社 Hot-water supply system

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JPS594923A (en) * 1982-06-30 1984-01-11 Sanko Metal Ind Corp Ltd Folding machine
JPS5938612A (en) * 1982-08-27 1984-03-02 Mitsubishi Electric Corp Calculating device for speed of target
JPH08121797A (en) * 1994-10-27 1996-05-17 Tokyo Gas Co Ltd Circulation type water heater

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Publication number Priority date Publication date Assignee Title
JPS594923A (en) * 1982-06-30 1984-01-11 Sanko Metal Ind Corp Ltd Folding machine
JPS5938612A (en) * 1982-08-27 1984-03-02 Mitsubishi Electric Corp Calculating device for speed of target
JPH08121797A (en) * 1994-10-27 1996-05-17 Tokyo Gas Co Ltd Circulation type water heater

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014049814A1 (en) * 2012-09-28 2014-04-03 三菱電機株式会社 Hot-water supply system
JPWO2014049814A1 (en) * 2012-09-28 2016-08-22 三菱電機株式会社 Hot water system
EP2902714A4 (en) * 2012-09-28 2017-07-26 Mitsubishi Electric Corporation Hot-water supply system

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