JP6886640B2 - Hot water heating system - Google Patents

Hot water heating system Download PDF

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JP6886640B2
JP6886640B2 JP2017206750A JP2017206750A JP6886640B2 JP 6886640 B2 JP6886640 B2 JP 6886640B2 JP 2017206750 A JP2017206750 A JP 2017206750A JP 2017206750 A JP2017206750 A JP 2017206750A JP 6886640 B2 JP6886640 B2 JP 6886640B2
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heating
hot water
passage
heat medium
circulation circuit
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JP2019078492A (en
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康資 森田
康資 森田
豪人 横山
豪人 横山
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Noritz Corp
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Noritz Corp
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Priority to JP2017206750A priority Critical patent/JP6886640B2/en
Priority to US16/756,462 priority patent/US20210190329A1/en
Priority to PCT/JP2018/038456 priority patent/WO2019082735A1/en
Priority to CN201880068156.XA priority patent/CN111247372B/en
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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
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1008—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system expansion tanks
    • 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
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
    • 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
    • F24D3/00—Hot-water central heating systems
    • 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
    • F24D3/00—Hot-water central heating systems
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
    • 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
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • 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
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
    • F24D3/1066—Distributors for heating liquids

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Description

本発明は、温水暖房装置で加熱した暖房熱媒の熱を利用して暖房する温水暖房システムに関する。 The present invention relates to a hot water heating system that heats by utilizing the heat of a heating heat medium heated by a hot water heating device.

従来から、温水暖房装置で加熱した温水を暖房熱媒として暖房端末に供給して暖房を行う温水暖房システムが広く使用されている。このような温水暖房システムは、例えば特許文献１のように、暖房運転時に温水暖房装置の加熱部で加熱した暖房熱媒を暖房端末に供給し、暖房端末から戻ってきた暖房熱媒を再び加熱部で加熱するように構成されている。この温水暖房装置は、暖房循環回路により暖房端末に接続され、暖房熱媒を暖房循環回路に循環させるポンプと、暖房熱媒の温度上昇による体積膨張を吸収するための膨張タンクを備えている。また、温水暖房装置は加熱部で給湯水を加熱して給湯する給湯機能を備えている。 Conventionally, a hot water heating system has been widely used in which hot water heated by a hot water heating device is supplied to a heating terminal as a heating heat medium to perform heating. In such a hot water heating system, for example, as in Patent Document 1, the heating heat medium heated by the heating unit of the hot water heating device during the heating operation is supplied to the heating terminal, and the heating heat medium returned from the heating terminal is heated again. It is configured to heat in the part. This hot water heating device is connected to a heating terminal by a heating circulation circuit, and includes a pump for circulating a heating heat medium in the heating circulation circuit and an expansion tank for absorbing volume expansion due to a temperature rise of the heating heat medium. In addition, the hot water heating device has a hot water supply function in which the hot water is heated by the heating unit to supply hot water.

ところで、暖房端末が複数ある場合や温水暖房装置と暖房端末の距離が離れている場合には、暖房循環回路の通路長が長くなる。このような場合、温水暖房装置のポンプの負荷が大きくなるため、温水暖房装置の外部に温水暖房装置のポンプと連動して暖房熱媒を循環させることが可能な外部ポンプを設ける。 By the way, when there are a plurality of heating terminals or when the distance between the hot water heating device and the heating terminal is large, the passage length of the heating circulation circuit becomes long. In such a case, since the load on the pump of the hot water heating device becomes large, an external pump capable of circulating the heating heat medium in conjunction with the pump of the hot water heating device is provided outside the hot water heating device.

また、暖房循環回路の通路長が長くなる程循環させる暖房熱媒の量が増えるため暖房熱媒の体積膨張量も増えるので、温水暖房装置の膨張タンクが容量不足となる場合には、温水暖房装置の外部に膨張タンクを設ける場合がある。さらに、外部に膨張タンクを設けることを前提として初めから膨張タンクを備えていない温水暖房装置もある。 Further, as the passage length of the heating circulation circuit becomes longer, the amount of the heating heat medium to be circulated increases, so that the volume expansion amount of the heating heat medium also increases. Therefore, when the expansion tank of the hot water heating device becomes insufficient in capacity, hot water heating An expansion tank may be provided outside the device. Further, there is also a hot water heating device that does not have an expansion tank from the beginning on the premise that an expansion tank is provided externally.

特開２０１５−２２２１３７号公報Japanese Unexamined Patent Publication No. 2015-222137

温水暖房装置の外部に膨張タンクと外部ポンプを設けて温水暖房システムを構成する場合には、温水暖房装置と暖房端末を接続する暖房循環回路に膨張タンクと外部ポンプを配設する。このとき、膨張タンクと外部ポンプの位置関係が不適切であると、外部ポンプの駆動開始時に温水暖房装置内で暖房熱媒の流通路の内圧が駆動前と比べて低下するため、温水暖房装置は暖房熱媒が減少していると判定して暖房熱媒を自動的に補給する、又はその補給を促す報知を行う。 When an expansion tank and an external pump are provided outside the hot water heating device to form a hot water heating system, the expansion tank and the external pump are arranged in a heating circulation circuit connecting the hot water heating device and the heating terminal. At this time, if the positional relationship between the expansion tank and the external pump is improper, the internal pressure of the flow passage of the heating heat medium in the hot water heating device is lower than that before the driving when the external pump starts to be driven. Determines that the heating heat medium is decreasing and automatically replenishes the heating heat medium, or notifies that the replenishment is urged.

しかし、その内圧低下の原因は暖房熱媒の減少ではないので、暖房熱媒を補給しても内圧低下は解消されない。そのため、温水暖房装置が暖房熱媒の漏洩という誤った判定を行って、漏洩発生の報知と共に暖房運転を停止する虞がある。 However, since the cause of the decrease in the internal pressure is not the decrease in the heating heat medium, the decrease in the internal pressure cannot be eliminated even if the heating heat medium is replenished. Therefore, there is a possibility that the hot water heating device erroneously determines that the heating heat medium has leaked and stops the heating operation together with the notification of the leakage occurrence.

本発明の目的は、循環手段と膨張吸収手段の位置関係が不適切であることを判定可能な温水暖房システムを提供することである。 An object of the present invention is to provide a hot water heating system capable of determining that the positional relationship between the circulation means and the expansion / absorption means is inappropriate.

請求項１の発明は、温水暖房装置と、暖房端末と、これらを接続する暖房循環回路と、前記暖房循環回路に設けられた循環手段と、温度上昇による暖房熱媒の体積膨張を吸収するために前記暖房循環回路に設けられた膨張吸収手段とを備えた温水暖房システムにおいて、前記温水暖房装置は、前記暖房循環回路に接続される暖房通路と、前記暖房通路内の暖房熱媒を加熱する加熱手段と、前記暖房通路の内圧を検知する圧力検知手段と、前記暖房通路に接続された補給通路と、前記補給通路を開閉するための開閉手段と、前記暖房通路の内圧が予め設定された基準値未満となったことを前記圧力検知手段が検知したときに前記開閉手段を開けて暖房熱媒を補給させる制御手段を備え、前記制御手段は、前記循環手段の駆動開始時に前記圧力検知手段の検知圧力が前記循環手段の駆動前の検知圧力よりも低下する場合には、前記循環手段と前記膨張吸収手段の位置関係が不適切であると判定することを特徴としている。 The invention of claim 1 is to absorb a hot water heating device, a heating terminal, a heating circulation circuit connecting them, a circulation means provided in the heating circulation circuit, and a volume expansion of a heating heat medium due to a temperature rise. In a hot water heating system provided with an expansion / absorption means provided in the heating circulation circuit, the hot water heating device heats a heating passage connected to the heating circulation circuit and a heating heat medium in the heating passage. The heating means, the pressure detecting means for detecting the internal pressure of the heating passage, the replenishment passage connected to the heating passage, the opening / closing means for opening and closing the replenishment passage, and the internal pressure of the heating passage are preset. The control means is provided with a control means for opening the opening / closing means to replenish the heating heat medium when the pressure detecting means detects that the value is less than the reference value, and the control means is provided with the pressure detecting means when the driving of the circulation means is started. When the detected pressure is lower than the detected pressure before driving the circulation means, it is determined that the positional relationship between the circulation means and the expansion / absorption means is inappropriate.

上記構成によれば、温水暖房システムは、暖房運転時に温水暖房装置で加熱した暖房熱媒を循環手段により暖房循環回路に循環させる。暖房循環回路に設けられた膨張吸収手段が、温度上昇による暖房熱媒の体積膨張を吸収して暖房循環回路や暖房通路の内圧の上昇による破損や漏洩を防ぐ。暖房通路の内圧は、温水暖房装置の圧力検知手段により検知され、暖房熱媒の量が減少して暖房通路の内圧が基準値未満となったときに、制御手段は暖房熱媒を補給させる。そして、循環手段の駆動開始時に暖房通路の内圧が駆動前の内圧よりも低下する場合に、制御手段は循環手段と膨張吸収手段の位置関係が不適切であると判定する。従って、温水暖房システムの施工時に行う試運転において、循環手段の駆動開始時に循環手段と膨張吸収手段が不適切な位置関係で接続されたことを判定できるので、これらを適切な位置関係に接続し直すことができる。 According to the above configuration, the hot water heating system circulates the heating heat medium heated by the hot water heating device during the heating operation to the heating circulation circuit by the circulation means. The expansion / absorption means provided in the heating circulation circuit absorbs the volume expansion of the heating heat medium due to the temperature rise to prevent damage or leakage due to the rise in the internal pressure of the heating circulation circuit or the heating passage. The internal pressure of the heating passage is detected by the pressure detecting means of the hot water heating device, and when the amount of the heating heat medium decreases and the internal pressure of the heating passage becomes less than the reference value, the control means replenishes the heating heat medium. Then, when the internal pressure of the heating passage becomes lower than the internal pressure before the driving at the start of driving the circulation means, the control means determines that the positional relationship between the circulation means and the expansion / absorption means is inappropriate. Therefore, in the test run performed at the time of construction of the hot water heating system, it can be determined that the circulation means and the expansion / absorption means are connected in an inappropriate positional relationship at the start of driving the circulation means, so that they are reconnected to an appropriate positional relationship. be able to.

請求項２の発明は、請求項１において、前記温水暖房装置は、前記暖房循環回路をバイパスするために前記加熱手段の下流側の前記暖房通路から分岐して前記加熱手段の上流側の前記暖房通路に接続するバイパス通路を備え、前記バイパス通路は、暖房熱媒と給湯水の熱交換を行うための熱交換器を備えていることを特徴としている。 According to a second aspect of the present invention, in the first aspect, the hot water heating device branches from the heating passage on the downstream side of the heating means to bypass the heating circulation circuit, and the heating on the upstream side of the heating means. The bypass passage is provided with a bypass passage connected to the passage, and the bypass passage is provided with a heat exchanger for exchanging heat between the heating heat medium and the hot water supply water.

上記構成によれば、暖房熱媒を利用して給湯水を加熱することができるので、給湯機能を備えた温水暖房システムを構成することができる。 According to the above configuration, since the hot water supply water can be heated by using the heating heat medium, a hot water heating system having a hot water supply function can be configured.

請求項３の発明は、請求項２において、前記暖房通路と前記バイパス通路の分岐部に暖房熱媒の分配比率を調整可能な分配弁を備えていることを特徴としている。 The invention of claim 3 is characterized in that, in claim 2, a distribution valve capable of adjusting the distribution ratio of the heating heat medium is provided at a branch portion between the heating passage and the bypass passage.

上記構成によれば、加熱した暖房熱媒を暖房用と給湯用に分配できるので、暖房と給湯を同時に行うことができる温水暖房システムを構成することができる。 According to the above configuration, since the heated heating heat medium can be distributed for heating and hot water supply, it is possible to configure a hot water heating system capable of performing heating and hot water supply at the same time.

本発明の温水暖房システムによれば、循環手段と膨張吸収手段の位置関係が不適切であることを判定可能である。 According to the hot water heating system of the present invention, it is possible to determine that the positional relationship between the circulation means and the expansion / absorption means is inappropriate.

実施例に係る温水暖房システムの全体構成を示す図である。It is a figure which shows the whole structure of the hot water heating system which concerns on Example. 実施例に係る温水暖房装置の構成を示す図である。It is a figure which shows the structure of the hot water heating apparatus which concerns on Example. 循環ポンプと膨張タンクが不適切な位置関係に配設された温水給湯システムを示す図である。It is a figure which shows the hot water supply system in which a circulation pump and an expansion tank are arranged in an improper positional relationship.

以下、本発明を実施するための形態について実施例に基づいて説明する。 Hereinafter, embodiments for carrying out the present invention will be described based on examples.

最初に、温水暖房システム１の全体構成について、図１に基づいて説明する。
温水暖房システム１は、温水暖房装置２で加熱した暖房熱媒を暖房端末３に供給して暖房する暖房運転を行うように構成されている。温水暖房システム１は、温水暖房装置２と、暖房端末３と、これらを接続する暖房循環回路４と、暖房循環回路４に設けられた外部ポンプ５（循環手段）と、温度上昇による暖房熱媒の体積膨張を吸収するために暖房循環回路４に設けられた密閉式の膨張タンク６（膨張吸収手段）とを備え、暖房熱媒が流れる通路は密閉式に構成されている。暖房端末３としては、例えば暖房熱媒の熱により温められた空気を送風する温風暖房装置や、暖房熱媒の輻射熱と空気の自然対流を利用して暖房するパネルヒータや床暖房装置等が使用可能であり、これらが複数接続されていてもよい。 First, the overall configuration of the hot water heating system 1 will be described with reference to FIG.
The hot water heating system 1 is configured to perform a heating operation in which a heating heat medium heated by the hot water heating device 2 is supplied to a heating terminal 3 to heat the heating terminal 3. The hot water heating system 1 includes a hot water heating device 2, a heating terminal 3, a heating circulation circuit 4 connecting these, an external pump 5 (circulation means) provided in the heating circulation circuit 4, and a heating heat medium due to a temperature rise. A closed type expansion tank 6 (expansion and absorption means) provided in the heating circulation circuit 4 for absorbing the volume expansion of the heating heat medium is provided, and the passage through which the heating heat medium flows is configured in a closed type. Examples of the heating terminal 3 include a hot air heating device that blows air warmed by the heat of a heating heat medium, a panel heater that heats by utilizing the radiant heat of the heating heat medium and natural convection of air, and a floor heating device. It can be used, and a plurality of these may be connected.

暖房循環回路４は、外部ポンプ５の駆動により暖房熱媒を暖房端末３に循環供給する端末循環回路部４ａと、端末循環回路部４ａから温水暖房装置２に暖房熱媒を供給すると共に温水暖房装置２で加熱した暖房熱媒を端末循環回路部４ａに供給する加熱循環回路部４ｂで構成されている。膨張タンク６は、外部ポンプ５に対して適切な位置関係となるように、端末循環回路部４ａの外部ポンプ５の上流側に設けられている。加熱循環回路部４ｂは、端末循環回路部４ａの膨張タンク６の上流側に接続されている。暖房運転中に、後述する給湯運転のために温水暖房装置２からの暖房熱媒の供給が一時中断した場合であっても、端末循環回路部４ａを循環する暖房熱媒により暖房を継続することができる。 The heating circulation circuit 4 supplies the heating heat medium to the heating terminal 3 by driving the external pump 5 and supplies the heating heat medium to the hot water heating device 2 from the terminal circulation circuit unit 4a and the hot water heating device 2. It is composed of a heating circulation circuit unit 4b that supplies the heating heat medium heated by the device 2 to the terminal circulation circuit unit 4a. The expansion tank 6 is provided on the upstream side of the external pump 5 of the terminal circulation circuit unit 4a so as to have an appropriate positional relationship with the external pump 5. The heating circulation circuit unit 4b is connected to the upstream side of the expansion tank 6 of the terminal circulation circuit unit 4a. Even if the supply of the heating heat medium from the hot water heating device 2 is temporarily interrupted due to the hot water supply operation described later during the heating operation, the heating is continued by the heating heat medium circulating in the terminal circulation circuit unit 4a. Can be done.

次に、温水暖房装置２について、図２に基づいて説明する。
温水暖房装置２は、暖房運転時に暖房熱媒を加熱して暖房循環回路４に供給する。また、暖房熱媒の熱を利用して加熱した上水を給湯設定温度に調整して給湯する給湯機能を備えている。この温水暖房装置２は、暖房運転中でも給湯機能を利用することができるように構成されている。 Next, the hot water heating device 2 will be described with reference to FIG.
The hot water heating device 2 heats the heating heat medium during the heating operation and supplies it to the heating circulation circuit 4. It also has a hot water supply function that adjusts the hot water supplied by using the heat of the heating heat medium to the set temperature for hot water supply. The hot water heating device 2 is configured so that the hot water supply function can be used even during the heating operation.

温水暖房装置２は、暖房循環回路４に接続される暖房通路１０と、暖房通路１０内の暖房熱媒を加熱する加熱部１１（加熱手段）と、暖房通路１０に設けられた内蔵ポンプ１３と、暖房通路１０の内圧を検知する圧力センサ１４（圧力検知手段）と、暖房通路１０に接続された補給通路１５と、補給通路１５を開閉するための開閉弁１６（開閉手段）と暖房運転等を制御する制御部１７（制御手段）等を備えている。内蔵ポンプ１３は、暖房運転時に外部ポンプ５と連動して暖房熱媒を循環させることが可能である。加熱部１１は、例えば矢印Ｆで示す燃料ガスと矢印ＡＳで示す空気を混合して燃焼させたときの燃焼熱を利用して暖房熱媒を加熱する。 The hot water heating device 2 includes a heating passage 10 connected to the heating circulation circuit 4, a heating unit 11 (heating means) for heating the heating heat medium in the heating passage 10, and a built-in pump 13 provided in the heating passage 10. , A pressure sensor 14 (pressure detecting means) for detecting the internal pressure of the heating passage 10, a replenishment passage 15 connected to the heating passage 10, an on-off valve 16 (opening / closing means) for opening and closing the replenishment passage 15, heating operation, etc. A control unit 17 (control means) and the like for controlling the above are provided. The built-in pump 13 can circulate the heating heat medium in conjunction with the external pump 5 during the heating operation. The heating unit 11 heats the heating heat medium by utilizing, for example, the heat of combustion when the fuel gas indicated by the arrow F and the air indicated by the arrow AS are mixed and burned.

また、温水暖房装置２は、第１バイパス通路１８（バイパス通路）と、この第１バイパス通路１８に設けられた給湯用熱交換器１９（熱交換器）と、給水通路２０と、給湯通路２１等を備えている。第１バイパス通路１８は、暖房循環回路４をバイパスするように、加熱部１１の下流側で暖房通路１０から分岐され、内蔵ポンプ１３の上流側で暖房通路１０に合流する。給水通路２０は、矢印ＣＷで示す上水を給湯用熱交換器１９に供給する。給湯通路２１は、矢印ＨＷで示すように給湯用熱交換器１９で加熱された給湯水を給湯栓等に給湯する。 Further, the hot water heating device 2 includes a first bypass passage 18 (bypass passage), a hot water supply heat exchanger 19 (heat exchanger) provided in the first bypass passage 18, a water supply passage 20, and a hot water supply passage 21. Etc. are provided. The first bypass passage 18 is branched from the heating passage 10 on the downstream side of the heating unit 11 and joins the heating passage 10 on the upstream side of the built-in pump 13 so as to bypass the heating circulation circuit 4. The water supply passage 20 supplies the clean water indicated by the arrow CW to the hot water supply heat exchanger 19. The hot water supply passage 21 supplies hot water supplied by the hot water supply heat exchanger 19 to a hot water tap or the like as indicated by an arrow HW.

次に、暖房通路１０について説明する。
暖房通路１０は、加熱部１１と内蔵ポンプ１３の間に第１温度センサ２２を備え、加熱部１１の下流側に第２温度センサ２３を備えている。第１温度センサ２２は、加熱部１１に流入する暖房熱媒の温度を検知する。第２温度センサ２３は、加熱部１１で加熱された暖房熱媒の温度を検知する。これらのセンサの検知温度に基づいて、加熱された暖房熱媒の温度が所定の温度となるように加熱部１１や内蔵ポンプ１３等が制御部１７により制御される。 Next, the heating passage 10 will be described.
The heating passage 10 includes a first temperature sensor 22 between the heating unit 11 and the built-in pump 13, and a second temperature sensor 23 on the downstream side of the heating unit 11. The first temperature sensor 22 detects the temperature of the heating heat medium flowing into the heating unit 11. The second temperature sensor 23 detects the temperature of the heating heat medium heated by the heating unit 11. Based on the detection temperature of these sensors, the heating unit 11, the built-in pump 13, and the like are controlled by the control unit 17 so that the temperature of the heated heating heat medium becomes a predetermined temperature.

暖房通路１０と第１バイパス通路１８の分岐部には、第１分配弁２４（分配弁）が設けられている。第１分配弁２４は、暖房運転と給湯運転と暖房給湯同時運転に対応可能なように分配比率を調整可能であり、加熱部１１で加熱された暖房熱媒を暖房通路１０と第１バイパス通路１８に分配する。第１分配弁２４の分配比率は、暖房運転時には暖房通路１０にのみ暖房熱媒が供給されるように調整され、給湯運転時には第１バイパス通路１８にのみ暖房熱媒が供給されるように調整される。また、暖房給湯同時運転時には、給湯を優先するように第１分配弁２４の分配比率が調整されて暖房熱媒が暖房通路１０と第１バイパス通路１８に分配される。第１分配弁２４により暖房通路１０に分配された暖房熱媒は矢印ＨＳで示すように暖房循環回路４に供給される。 A first distribution valve 24 (distribution valve) is provided at a branch portion between the heating passage 10 and the first bypass passage 18. The distribution ratio of the first distribution valve 24 can be adjusted so as to correspond to the heating operation, the hot water supply operation, and the simultaneous heating and hot water supply operation, and the heating heat medium heated by the heating unit 11 is transferred to the heating passage 10 and the first bypass passage. Distribute to 18. The distribution ratio of the first distribution valve 24 is adjusted so that the heating heat medium is supplied only to the heating passage 10 during the heating operation, and the heating heat medium is supplied only to the first bypass passage 18 during the hot water supply operation. Will be done. Further, during the simultaneous operation of heating and hot water supply, the distribution ratio of the first distribution valve 24 is adjusted so as to give priority to hot water supply, and the heating heat medium is distributed to the heating passage 10 and the first bypass passage 18. The heating heat medium distributed to the heating passage 10 by the first distribution valve 24 is supplied to the heating circulation circuit 4 as shown by the arrow HS.

加熱部１１と第１分配弁２４の間には、暖房通路１０内の圧力を開放可能な圧力開放弁２５が設けられている。内蔵ポンプ１３の上流側には、矢印ＨＲで示すように暖房循環回路４から戻ってくる暖房熱媒の温度を検知する暖房戻り温度センサ２６が設けられている。内蔵ポンプ１３と暖房戻り温度センサ２６の間には、矢印ＡＦで示すように暖房熱媒を補給するための補給通路１５が接続されている。この補給通路１５に開閉弁１６を備え、開閉弁１６の下流側の補給通路１５に圧力センサ１４が設けられている。 A pressure release valve 25 capable of releasing the pressure in the heating passage 10 is provided between the heating unit 11 and the first distribution valve 24. On the upstream side of the built-in pump 13, as shown by an arrow HR, a heating return temperature sensor 26 for detecting the temperature of the heating heat medium returning from the heating circulation circuit 4 is provided. A replenishment passage 15 for replenishing the heating heat medium is connected between the built-in pump 13 and the heating return temperature sensor 26 as shown by the arrow AF. An on-off valve 16 is provided in the replenishment passage 15, and a pressure sensor 14 is provided in the replenishment passage 15 on the downstream side of the on-off valve 16.

次に、給水通路２０と給湯通路２１について説明する。
給水通路２０は、第２分配弁２７と、流量調整弁２８と、流量センサ２９と、入水温度センサ３０を備えている。給水通路２０から第２バイパス通路３１が分岐され、この分岐部に配設された分配比率を調整可能な第２分配弁２７が給水通路２０と第２バイパス通路３１に上水を分配する。流量調整弁２８は、第２分配弁２７に入水する上水の流量を調整する。流量センサ２９は、第２分配弁２７に入水する上水の流量を検知する。入水温度センサ３０は第２分配弁２７に入水する上水の温度を検知する。 Next, the water supply passage 20 and the hot water supply passage 21 will be described.
The water supply passage 20 includes a second distribution valve 27, a flow rate adjusting valve 28, a flow rate sensor 29, and a water entry temperature sensor 30. The second bypass passage 31 is branched from the water supply passage 20, and the second distribution valve 27, which is arranged in the branch portion and can adjust the distribution ratio, distributes clean water to the water supply passage 20 and the second bypass passage 31. The flow rate adjusting valve 28 adjusts the flow rate of clean water entering the second distribution valve 27. The flow rate sensor 29 detects the flow rate of clean water entering the second distribution valve 27. The water entry temperature sensor 30 detects the temperature of the clean water that enters the second distribution valve 27.

第２バイパス通路３１は、給湯通路２１に合流部Ｃにおいて合流する。給湯通路２１の合流部Ｃと給湯用熱交換器１９の間には、出湯温度センサ３２が設けられている。この出湯温度センサ３２は、給湯用熱交換器１９から出湯される湯水の温度を検知する。 The second bypass passage 31 joins the hot water supply passage 21 at the merging portion C. A hot water temperature sensor 32 is provided between the confluence portion C of the hot water supply passage 21 and the hot water supply heat exchanger 19. The hot water temperature sensor 32 detects the temperature of hot water discharged from the hot water supply heat exchanger 19.

給湯通路２１の下流側端部には、給湯温度センサ３３が設けられている。この給湯温度センサ３３は、給湯用熱交換器１９で加熱された湯水と第２バイパス通路３１を流れる上水とが混合された給湯水の給湯温度を検知する。給湯運転時には、この給湯温度が設定した温度になるように第２分配弁２７の分配比率が調整される。 A hot water supply temperature sensor 33 is provided at the downstream end of the hot water supply passage 21. The hot water supply temperature sensor 33 detects the hot water supply temperature of the hot water supply water in which the hot water water heated by the hot water supply heat exchanger 19 and the clean water flowing through the second bypass passage 31 are mixed. During the hot water supply operation, the distribution ratio of the second distribution valve 27 is adjusted so that the hot water supply temperature becomes the set temperature.

次に、制御部１７について、図１，図２に基づいて説明する。
制御部１７は、温水暖房装置２内に設けられたセンサ類の検知信号等に基づいて、加熱部１１、内蔵ポンプ１３、外部ポンプ５、第１分配弁２４等を制御して、暖房運転、給湯運転、暖房給湯同時運転の各運転を制御する。暖房運転の制御のために、制御部１７は暖房端末３及び外部ポンプ５に夫々通信可能に接続されている。この制御部１７には、温水暖房装置２の設定操作等を行うための操作端末３４が接続されている。操作端末３４は、例えば温度等の情報を表示可能な表示部３５と、設定操作等を行うためのスイッチ部３６を備えている。 Next, the control unit 17 will be described with reference to FIGS. 1 and 2.
The control unit 17 controls the heating unit 11, the built-in pump 13, the external pump 5, the first distribution valve 24, etc. based on the detection signals of the sensors provided in the hot water heating device 2, and performs the heating operation. Controls each operation of hot water supply operation and simultaneous heating and hot water supply operation. To control the heating operation, the control unit 17 is communicably connected to the heating terminal 3 and the external pump 5, respectively. An operation terminal 34 for performing a setting operation or the like of the hot water heating device 2 is connected to the control unit 17. The operation terminal 34 includes, for example, a display unit 35 capable of displaying information such as temperature, and a switch unit 36 for performing setting operations and the like.

制御部１７は、暖房通路１０の内圧が予め設定された基準値未満となったことを圧力センサ１４が検知したときに、開閉弁１６を開けて暖房熱媒を補給させる。また、温水暖房装置２内で何らかの異常が検知された場合には、その異常を操作端末３４により報知すると共に、安全のために運転の停止等を行う。暖房通路１０の内圧の基準値は、暖房熱媒を加熱して循環させる実験等により求められた内圧等に基づいて予め設定され、操作端末３４の操作によりその調整が可能である。 When the pressure sensor 14 detects that the internal pressure of the heating passage 10 is less than a preset reference value, the control unit 17 opens the on-off valve 16 to replenish the heating heat medium. When any abnormality is detected in the hot water heating device 2, the operation terminal 34 notifies the abnormality and stops the operation for safety. The reference value of the internal pressure of the heating passage 10 is set in advance based on the internal pressure or the like obtained by an experiment or the like in which the heating heat medium is heated and circulated, and the reference value can be adjusted by operating the operation terminal 34.

温水暖房システム１の施工時に、施工者は各機器を接続した後で温水暖房システム１に暖房熱媒を導入し、暖房運転等の試運転を行うと共に、暖房熱媒の漏洩等の異常の有無を確認する。この試運転において、制御部１７は、外部ポンプ５の駆動開始時に圧力センサ１４の検知圧力が駆動前の検知圧力よりも低下する場合には、外部ポンプ５と膨張タンク６の位置関係が不適切であると判定する。そして、その不適切であると判定したことを、例えば操作端末３４の表示部３５に表示して施工者に報知する。 At the time of construction of the hot water heating system 1, the builder introduces a heating heat medium into the hot water heating system 1 after connecting each device, performs a trial run such as a heating operation, and checks whether there is an abnormality such as leakage of the heating heat medium. Confirm. In this test run, if the detected pressure of the pressure sensor 14 at the start of driving the external pump 5 is lower than the detected pressure before driving, the positional relationship between the external pump 5 and the expansion tank 6 is inappropriate. Judge that there is. Then, for example, the display unit 35 of the operation terminal 34 is displayed to notify the builder that the determination is inappropriate.

外部ポンプ５と膨張タンク６の位置関係の判定について説明する。
外部ポンプ５の駆動開始により、暖房熱媒が外部ポンプ５の下流側に押し出されると共に、その押し出された量に相当する外部ポンプ５の上流側の暖房熱媒が外部ポンプ５に引き込まれる。 Determining the positional relationship between the external pump 5 and the expansion tank 6 will be described.
When the operation of the external pump 5 is started, the heating heat medium is pushed out to the downstream side of the external pump 5, and the heating heat medium on the upstream side of the external pump 5 corresponding to the pushed out amount is drawn into the external pump 5.

図１に示すように、膨張タンク６が外部ポンプ５に対して適切な位置である外部ポンプ５の上流側に設けられていれば、外部ポンプ５から押し出された量に相当する暖房熱媒が暖房端末３から押し出され、その一部が温水暖房装置２に流入し、残部が端末循環回路部４ａを流れる。この温水暖房装置２に流入した暖房熱媒の量に相当する加熱された暖房熱媒が温水暖房装置２から端末循環回路部４ａに供給されるので、外部ポンプ５から押し出された量と外部ポンプ５に引き込まれた量が釣り合う。従って、温水暖房装置２の圧力センサ１４に検知される暖房通路１０の内圧は、外部ポンプ５の駆動開始の前後で変わらない。 As shown in FIG. 1, if the expansion tank 6 is provided on the upstream side of the external pump 5 at an appropriate position with respect to the external pump 5, a heating heat medium corresponding to the amount extruded from the external pump 5 is provided. It is pushed out from the heating terminal 3, a part of it flows into the hot water heating device 2, and the rest flows through the terminal circulation circuit unit 4a. Since the heated heating heat medium corresponding to the amount of the heating heat medium flowing into the hot water heating device 2 is supplied from the hot water heating device 2 to the terminal circulation circuit unit 4a, the amount pushed out from the external pump 5 and the external pump The amount drawn into 5 is balanced. Therefore, the internal pressure of the heating passage 10 detected by the pressure sensor 14 of the hot water heating device 2 does not change before and after the start of driving the external pump 5.

一方、図３に示すように、膨張タンク６が外部ポンプ５に対して不適切な位置である外部ポンプ５の下流側に設けられていると、外部ポンプ５から押し出された暖房熱媒の一部は膨張タンク６に流入して温水暖房装置２に流入する暖房熱媒が減少し、温水暖房装置２から押し出される暖房熱媒が減少する。そして、その一部が温水暖房装置２に流入し、残部が端末循環回路部４ａを流れる。外部ポンプ５から押し出された量と外部ポンプ５に引き込まれた量が釣り合うように、この温水暖房装置２に流入した暖房熱媒の量より多い加熱された暖房熱媒が温水暖房装置２から外部ポンプ５に引き込まれる。それ故、温水暖房装置２の圧力センサ１４に検知される暖房通路１０の内圧が、外部ポンプ５の駆動開始前と比べて低下する。従って、外部ポンプ５と膨張タンク６の位置関係が不適切であることを、外部ポンプ５を駆動したときの圧力センサ１４の検知圧力によって判定することができる。尚、暖房熱媒の量が不足している場合には、外部ポンプ５を駆動によらず圧力センサ１４の検知圧力が基準値未満になるので、容易に区別可能である。 On the other hand, as shown in FIG. 3, when the expansion tank 6 is provided on the downstream side of the external pump 5 at an inappropriate position with respect to the external pump 5, one of the heating heat media extruded from the external pump 5 is provided. The heating heat medium that flows into the expansion tank 6 and flows into the hot water heating device 2 decreases, and the heating heat medium that is pushed out from the hot water heating device 2 decreases. Then, a part of it flows into the hot water heating device 2, and the rest flows through the terminal circulation circuit unit 4a. A heated heating heat medium larger than the amount of the heating heat medium flowing into the hot water heating device 2 is external from the hot water heating device 2 so that the amount pushed out from the external pump 5 and the amount drawn into the external pump 5 are balanced. It is drawn into the pump 5. Therefore, the internal pressure of the heating passage 10 detected by the pressure sensor 14 of the hot water heating device 2 is lower than that before the start of driving the external pump 5. Therefore, it can be determined that the positional relationship between the external pump 5 and the expansion tank 6 is inappropriate by the detection pressure of the pressure sensor 14 when the external pump 5 is driven. If the amount of the heating heat medium is insufficient, the pressure detected by the pressure sensor 14 will be less than the reference value regardless of driving the external pump 5, so that it can be easily distinguished.

本発明の作用、効果について説明する。
温水暖房システム１の施工時に、施工者は各機器を接続した後で温水暖房システム１に暖房熱媒を導入し、暖房運転等の試運転を行う。外部ポンプ５の駆動を開始したとき、暖房通路１０の内圧が外部ポンプ５の駆動前よりも低下する場合に、外部ポンプ５と膨張タンク６の位置関係が不適切であることを判定できるので、施工者はすぐに適切な位置関係に接続し直すことが可能である。それ故、外部ポンプ５と膨張タンク６が不適切な位置関係に接続された温水暖房システム１の使用を防ぎ、暖房熱媒漏洩の誤判定により暖房運転を停止させる事態を防ぐことができる。 The operation and effect of the present invention will be described.
At the time of construction of the hot water heating system 1, the builder introduces a heating heat medium into the hot water heating system 1 after connecting each device, and performs a trial run such as a heating operation. When the drive of the external pump 5 is started, if the internal pressure of the heating passage 10 is lower than that before the drive of the external pump 5, it can be determined that the positional relationship between the external pump 5 and the expansion tank 6 is inappropriate. The builder can immediately reconnect to the proper positional relationship. Therefore, it is possible to prevent the use of the hot water heating system 1 in which the external pump 5 and the expansion tank 6 are connected in an improper positional relationship, and prevent the heating operation from being stopped due to an erroneous determination of the heating heat medium leakage.

また、温水暖房装置２は、暖房通路１０から分岐した第１バイパス通路１８に暖房熱媒と給湯水の熱交換を行うための給湯用熱交換器１９を備え、暖房熱媒を利用して給湯水を加熱することができるので、給湯機能を備えた温水暖房システム１を構成することができる。その上、暖房通路１０と第１バイパス通路１８の分岐部に暖房熱媒の分配比率を調整可能な第１分配弁２４を備えているので、加熱した暖房熱媒を暖房用と給湯用に分配して暖房と給湯を同時に行うことができる温水暖房システム１を構成することができる。 Further, the hot water heating device 2 is provided with a hot water supply heat exchanger 19 for exchanging heat between the heating heat medium and the hot water supply water in the first bypass passage 18 branched from the heating passage 10, and hot water is supplied by using the heating heat medium. Since water can be heated, the hot water heating system 1 having a hot water supply function can be configured. Further, since the first distribution valve 24 capable of adjusting the distribution ratio of the heating heat medium is provided at the branch portion of the heating passage 10 and the first bypass passage 18, the heated heating heat medium is distributed for heating and hot water supply. A hot water heating system 1 capable of simultaneously heating and supplying hot water can be configured.

当業者であれば、本発明の趣旨を逸脱することなく、前記実施形態に種々の変更を付加した形態で実施可能であり、本発明はそのような変更形態を包含するものである。 A person skilled in the art can carry out the embodiment with various modifications added to the embodiment without departing from the spirit of the present invention, and the present invention includes such modifications.

１ ：温水暖房システム
２ ：温水暖房装置
３ ：暖房端末
４ ：暖房循環回路
５ ：外部ポンプ（循環手段）
６ ：膨張タンク（膨張吸収手段）
１０ ：暖房通路
１１ ：加熱部（加熱手段）
１４ ：圧力センサ（圧力検知手段）
１５ ：補給通路
１６ ：開閉弁（開閉手段）
１７ ：制御部（制御手段）
１８ ：第１バイパス通路（バイパス通路）
１９ ：給湯用熱交換器（熱交換器）
２０ ：給水通路
２１ ：給湯通路
２４ ：第１分配弁（分配弁）
３４ ：操作端末 1: Hot water heating system 2: Hot water heating device 3: Heating terminal 4: Heating circulation circuit 5: External pump (circulation means)
6: Expansion tank (expansion absorption means)
10: Heating passage 11: Heating unit (heating means)
14: Pressure sensor (pressure detecting means)
15: Supply passage 16: On-off valve (opening / closing means)
17: Control unit (control means)
18: First bypass passage (bypass passage)
19: Heat exchanger for hot water supply (heat exchanger)
20: Water supply passage 21: Hot water supply passage 24: First distribution valve (distribution valve)
34: Operation terminal

Claims (3)

温水暖房装置と、暖房端末と、これらを接続する暖房循環回路と、前記暖房循環回路に設けられた循環手段と、温度上昇による暖房熱媒の体積膨張を吸収するために前記暖房循環回路に設けられた膨張吸収手段とを備えた温水暖房システムにおいて、
前記温水暖房装置は、前記暖房循環回路に接続される暖房通路と、前記暖房通路内の暖房熱媒を加熱する加熱手段と、前記暖房通路の内圧を検知する圧力検知手段と、前記暖房通路に接続された補給通路と、前記補給通路を開閉するための開閉手段と、前記暖房通路の内圧が予め設定された基準値未満となったことを前記圧力検知手段が検知したときに前記開閉手段を開けて暖房熱媒を補給させる制御手段を備え、
前記制御手段は、前記循環手段の駆動開始時に前記圧力検知手段の検知圧力が前記循環手段の駆動前の検知圧力よりも低下する場合には、前記循環手段と前記膨張吸収手段の位置関係が不適切であると判定することを特徴とする温水暖房システム。 A hot water heating device, a heating terminal, a heating circulation circuit connecting them, a circulation means provided in the heating circulation circuit, and a heating circulation circuit provided in the heating circulation circuit to absorb volume expansion of a heating heat medium due to a temperature rise. In a hot water heating system with expanded and absorptive means
The hot water heating device includes a heating passage connected to the heating circulation circuit, a heating means for heating the heating heat medium in the heating passage, a pressure detecting means for detecting the internal pressure of the heating passage, and the heating passage. The connected replenishment passage, the opening / closing means for opening / closing the replenishment passage, and the opening / closing means when the pressure detecting means detects that the internal pressure of the heating passage is less than a preset reference value. Equipped with a control means to open and replenish the heating heat medium
In the control means, when the detection pressure of the pressure detecting means is lower than the detection pressure before the driving of the circulation means at the start of driving the circulation means, the positional relationship between the circulation means and the expansion / absorption means is irrelevant. A hot water heating system characterized in that it is determined to be appropriate. 前記温水暖房装置は、前記暖房循環回路をバイパスするために前記加熱手段の下流側の前記暖房通路から分岐して前記加熱手段の上流側の前記暖房通路に接続するバイパス通路を備え、
前記バイパス通路は、暖房熱媒と給湯水の熱交換を行うための熱交換器を備えていることを特徴とする請求項１に記載の温水暖房システム。 The hot water heating device includes a bypass passage that branches from the heating passage on the downstream side of the heating means and connects to the heating passage on the upstream side of the heating means in order to bypass the heating circulation circuit.
The hot water heating system according to claim 1, wherein the bypass passage includes a heat exchanger for exchanging heat between the heating heat medium and the hot water supply water. 前記暖房通路と前記バイパス通路の分岐部に暖房熱媒の分配比率を調整可能な分配弁を備えていることを特徴とする請求項２に記載の温水暖房システム。 The hot water heating system according to claim 2, further comprising a distribution valve capable of adjusting the distribution ratio of the heating heat medium at a branch portion between the heating passage and the bypass passage.
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PCT/JP2018/038456 WO2019082735A1 (en) 2017-10-26 2018-10-16 Hot water heating system
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