US20210190329A1 - Hot water heating system - Google Patents

Hot water heating system Download PDF

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Publication number
US20210190329A1
US20210190329A1 US16/756,462 US201816756462A US2021190329A1 US 20210190329 A1 US20210190329 A1 US 20210190329A1 US 201816756462 A US201816756462 A US 201816756462A US 2021190329 A1 US2021190329 A1 US 2021190329A1
Authority
US
United States
Prior art keywords
heating
hot water
passage
heat medium
heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US16/756,462
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English (en)
Inventor
Yasushi Morita
Takehito YOKOYAMA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Noritz Corp
Original Assignee
Noritz Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Noritz Corp filed Critical Noritz Corp
Assigned to NORITZ CORPORATION reassignment NORITZ CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YOKOYAMA, TAKEHITO, MORITA, YASUSHI
Publication of US20210190329A1 publication Critical patent/US20210190329A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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

Definitions

  • the disclosure relates to a hot water heating system which performs heating using heat of a heat medium heated by a hot water heating device.
  • a hot water heating system has been widely used to perform heating by supplying hot water heated by a hot water heating device as a heat medium to a heating terminal.
  • a hot water heating system is configured so that, during a heating operation, the heat medium heated by a heating part of the hot water heating device is supplied to the heating terminal, and the heat medium returning from the heating terminal is heated again by the heating part.
  • the hot water heating device is connected to the heating terminal via a heat circulation circuit, and includes a pump which circulates the heat medium to the heat circulation circuit and an expansion tank for absorbing a volumetric expansion of the heat medium due to an increase in temperature.
  • the hot water heating device has a hot water supply function which supplies a hot water supply heated by the heating part.
  • the passage length of the heat circulation circuit increases.
  • an external pump capable of circulating the heat medium in conjunction with the pump of the hot water heating device is provided outside the hot water heating device.
  • the expansion tank may be provided outside the hot water heating device. Further, on the assumption that the expansion tank is provided outside, it is also possible that the hot water heating device does not include an expansion tank in the first place.
  • Patent Document 1 Japanese Laid-open No. 2015-222137
  • the hot water heating system is configured by providing the expansion tank and the external pump outside the hot water heating device
  • the expansion tank and the external pump are arranged in the heat circulation circuit which connects the hot water heating device and the heating terminal.
  • an internal pressure of the flow passage of the heat medium in the hot water heating device at the time driving of the external pump starts will be lower than that before the driving.
  • the hot water heating device determines that the heat medium decreases, and automatically supplies the heat medium or issues a notification which prompts the supply.
  • An objective of the disclosure is to provide a hot water heating system capable of determining that a positional relationship between a circulation means and an expansion-absorbing means is inappropriate.
  • a hot water heating system includes a hot water heating device, a heating terminal, a heat circulation circuit connecting the hot water heating device and the heating terminal, a circulation means provided in the heat circulation circuit, and an expansion-absorbing means provided in the heat circulation circuit to absorb a volumetric expansion of a heat medium due to an increase in temperature.
  • the hot water heating device includes a heating passage connected to the heat circulation circuit, a heating means which heats the heat medium in the heating passage, a pressure detection means which detects an internal pressure of the heating passage, a supply passage connected to the heating passage, an opening/closing means for opening and closing the supply passage, and a control means which opens the opening/closing means to supply the heat medium when the pressure detection means detects that the internal pressure of the heating passage is less than a preset reference value.
  • the control means determines that a positional relationship between the circulation means and the expansion-absorbing means is inappropriate in a case where a detection pressure of the pressure detection means at the time driving of the circulation means starts is lower than a detection pressure before the driving of the circulation means.
  • the hot water heating system circulates the heat medium heated by the hot water heating device to the heat circulation circuit through the circulation means.
  • the expansion-absorbing means provided in the heat circulation circuit absorbs the volumetric expansion of the heat medium due to the increase in temperature to prevent damage or leak resulting from an increase in the internal pressure of the heat circulation circuit and the heating passage.
  • the internal pressure of the heating passage is detected by the pressure detection means of the hot water heating device, and when the amount of the heat medium decreases and the internal pressure of the heating passage becomes less than the reference value, the control means supplies the heat medium.
  • the control means determines that the positional relationship between the circulation means and the expansion-absorbing means is inappropriate. Therefore, in a test operation performed at the time of construction of the hot water heating system, since it is possible to determine that the circulation means and the expansion-absorbing means have been connected in an inappropriate positional relationship at the time the driving of the circulation means starts, they can be reconnected in an appropriate positional relationship.
  • the hot water heating device includes a bypass passage which branches off from the heating passage downstream of the heating means and connects to the heating passage upstream of the heating means so as to bypass the heat circulation circuit.
  • the bypass passage includes a heat exchanger for performing heat exchange between the heat medium and a hot water supply.
  • the hot water supply can be heated using the heat medium, so that it is possible to configure a hot water heating system having a hot water supply function.
  • the disclosure of claim 3 according to claim 2 further includes a distribution valve capable of adjusting a distribution ratio of the heat medium at a branching part of the heating passage and the bypass passage.
  • the heated heat medium can be distributed for heating and for hot water supply, it is possible to configure a hot water heating system which can simultaneously perform heating and hot water supply.
  • the hot water heating system of the disclosure it is possible to determine that a positional relationship between the circulation means and the expansion-absorbing means is inappropriate.
  • FIG. 1 is a view showing an overall configuration of a hot water heating system according to an embodiment.
  • FIG. 2 is a view showing a configuration of a hot water heating device according to the embodiment.
  • FIG. 3 is a view showing a hot water supply system in which a circulation pump and an expansion tank are arranged in an inappropriate positional relationship.
  • the hot water heating system 1 is configured to perform a heating operation in which heating is performed by supplying a heat medium heated by a hot water heating device 2 to a heating terminal 3 .
  • the hot water heating system 1 includes a hot water heating device 2 , a heating terminal 3 , a heat circulation circuit 4 connecting the hot water heating device 2 and the heating terminal 3 , an external pump 5 (circulation means) provided in the heat circulation circuit 4 , and a closed expansion tank 6 (expansion-absorbing means) provided in the heat circulation circuit 4 to absorb a volumetric expansion of the heat medium due to an increase in temperature, and the passage through which the heat medium flows is configured as a closed type.
  • the heating terminal 3 may be a hot air heating device which blows air heated by the heat of the heat medium, a panel heater or a floor heating device which performs heating by using the radiant heat of the heat medium and natural convection of air, and the like, and a plurality of these devices may also be connected.
  • the heat circulation circuit 4 includes a terminal circulation circuit part 4 a which circulates and supplies the heat medium to the heating terminal 3 through driving of the external pump 5 , and a heating circulation circuit part 4 b which supplies the heat medium from the terminal circulation circuit part 4 a to the hot water heating device 2 and supplies the heat medium heated by the hot water heating device 2 to the terminal circulation circuit part 4 a .
  • the expansion tank 6 is provided upstream of the external pump 5 of the terminal circulation circuit part 4 a .
  • the heating circulation circuit part 4 b is connected to the upstream of the expansion tank 6 of the terminal circulation circuit part 4 a .
  • the hot water heating device 2 heats the heat medium and supplies the heat medium to the heat circulation circuit 4 .
  • it has a hot water supply function which supplies hot water by adjusting the tap water heated using the heat of the heat medium to a hot water supply setting temperature.
  • the hot water heating device 2 is configured so that the hot water supply function can be used even during the heating operation.
  • the hot water heating device 2 includes a heating passage 10 connected to the heat circulation circuit 4 , a heating part 11 (heating means) which heats the heat medium in the heating passage 10 , a built-in pump 13 provided in the heating passage 10 , a pressure sensor 14 (pressure detection means) which detects an internal pressure of the heating passage 10 , a supply passage 15 connected to the heating passage 10 , an opening/closing valve 16 (opening/closing means) for opening and closing the supply passage 15 , and a control part 17 (control means) which controls the heating operation and the like.
  • the built-in pump 13 can circulate the heat medium in conjunction with the external pump 5 .
  • the heating part 11 heats the heat medium by using, for example, the heat of combustion when a fuel gas indicated by an arrow F and air indicated by an arrow AS are mixed and burned.
  • 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 , a hot water passage 21 , etc.
  • the first bypass passage 18 is branched off from the heating passage 10 downstream of the heating part 11 , and joins the heating passage 10 upstream of the built-in pump 13 .
  • the water supply passage 20 supplies tap water indicated by an arrow CW to the hot water supply heat exchanger 19 .
  • the hot water supply passage 21 supplies a hot water supply heated by the hot water supply heat exchanger 19 to a hot water tap or the like, as indicated by an arrow HW.
  • the heating passage 10 includes a first temperature sensor 22 between the heating part 11 and the built-in pump 13 , and includes a second temperature sensor 23 downstream of the heating part 11 .
  • the first temperature sensor 22 detects the temperature of the heat medium flowing to the heating part 11 .
  • the second temperature sensor 23 detects the temperature of the heat medium heated by the heating part 11 . Based on the detection temperatures of these sensors, the heating part 11 , the built-in pump 13 , etc. are controlled by the control part 17 so that the temperature of the heated heat medium can become a predetermined temperature.
  • a first distribution valve 24 (distribution valve) is provided at a branching part of the heating passage 10 and the first bypass passage 18 .
  • the first distribution valve 24 can adjust a distribution ratio to be adaptable to the heating operation, the hot water supply operation, and the simultaneous operation of heating and hot water supply, and distributes the heat medium heated by the heating part 11 to the heating passage 10 and the first bypass passage 18 .
  • the distribution ratio of the first distribution valve 24 is adjusted so that the heat medium is supplied only to the heating passage 10 during the heating operation and is adjusted so that the heat medium is supplied only to the first bypass passage 18 during the hot water supply operation.
  • the heat medium is distributed to the heating passage 10 and the first bypass passage 18 .
  • the heat medium distributed by the first distribution valve 24 to the heating passage 10 is supplied to the heat circulation circuit 4 as indicated by an arrow HS.
  • a pressure release valve 25 capable of releasing the pressure in the heating passage 10 is provided between the heating part 11 and the first distribution valve 24 .
  • a heat return temperature sensor 26 which detects the temperature of the heat medium returning from the heat circulation circuit 4 , as indicated by an arrow HR, is provided upstream of the built-in pump 13 .
  • the supply passage 15 is provided with an opening/closing valve 16 , and a pressure sensor 14 is provided in the supply passage 15 downstream of the opening/closing valve 16 .
  • the water supply passage 20 includes a second distribution valve 27 , a flow adjustment valve 28 , a flow sensor 29 , and an incoming water temperature sensor 30 .
  • a second bypass passage 31 is branched off from the water supply passage 20 , and the second distribution valve 27 , which is provided at the branching part and can adjust the distribution ratio, distributes tap water to the water supply passage 20 and the second bypass passage 31 .
  • the flow adjustment valve 28 adjusts the flow rate of the tap water entering the second distribution valve 27 .
  • the flow sensor 29 detects the flow rate of the tap water entering the second distribution valve 27 .
  • the incoming water temperature sensor 30 detects the temperature of the tap water entering the second distribution valve 27 .
  • the second bypass passage 31 joins the hot water supply passage 21 at a junction part C.
  • a hot water delivery temperature sensor 32 is provided between the junction part C of the hot water supply passage 21 and the hot water supply heat exchanger 19 .
  • the hot water delivery temperature sensor 32 detects the temperature of the hot water delivered from the hot water supply heat exchanger 19 .
  • 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 a hot water supply temperature of the hot water supply which is mixed from the hot water heated by the hot water supply heat exchanger 19 and the tap water flowing through the second bypass passage 31 .
  • the distribution ratio of the second distribution valve 27 is adjusted so that the hot water supply temperature can become a set temperature.
  • the control part 17 Based on detection signals of sensors provided in the hot water heating device 2 , the control part 17 controls the heating part 11 , the built-in pump 13 , the external pump 5 , the first distribution valve 24 , etc. to control each of the heating operation, the hot water supply operation, and the simultaneous operation of heating and hot water supply.
  • the control part 17 is communicably connected to the heating terminal 3 and the external pump 5 , respectively.
  • the control part 17 is connected to an operation terminal 34 for performing a setting operation and the like on the hot water heating device 2 .
  • the operation terminal 34 includes, for example, a display part 35 capable of displaying information such as temperature, and a switch part 36 for performing a setting operation and the like.
  • the control part 17 opens the opening/closing valve 16 to supply the heat medium.
  • the abnormality is notified through the operation terminal 34 , and an operation stop or the like is performed for safety.
  • the reference value of the internal pressure of the heating passage 10 is preset based on an internal pressure or the like obtained, for example, through an experiment in which the heat medium is heated and circulated, and it may be adjusted through the operation of the operation terminal 34 .
  • the installer introduces the heat medium into the hot water heating system 1 , performs a test operation of the heating operation and the like, and checks whether there is any abnormality such as a leak of the heat medium.
  • the controller 17 determines that the positional relationship between the external pump 5 and the expansion tank 6 is inappropriate. Then, the determination of the inappropriateness is, for example, displayed on the display part 35 of the operation terminal 34 to notify the installer.
  • the expansion tank 6 is provided upstream of the external pump 5 (which is an appropriate position with respect to the external pump 5 )
  • the heat medium equivalent to the amount pushed out from the external pump 5 is pushed out from the heating terminal 3 , a part thereof flows into the hot water heating device 2 , and the remaining part flows through the terminal circulation circuit part 4 a .
  • heated heat medium equivalent to the amount of the heat medium which has flowed into the hot water heating device 2 is supplied from the hot water heating device 2 to the terminal circulation circuit part 4 a , the amount pushed out from the external pump 5 is in line with the amount drawn into the external pump 5 . 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 driving of the external pump 5 starts.
  • 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 driving of the external pump 5 starts. Therefore, the inappropriateness of the positional relationship between the external pump 5 and the expansion tank 6 can be determined based on the detection pressure of the pressure sensor 14 when the external pump 5 is driven. In the case where the amount of the heat medium is insufficient, the detection pressure of the pressure sensor 14 becomes less than the reference value regardless of whether the external pump 5 is driven, and thus distinction can be easily made.
  • the installer introduces the heat medium into the hot water heating system 1 and performs a test operation of the heating operation and the like.
  • driving of the external pump 5 starts, in the case where the internal pressure of the heating passage 10 is lower than that before the driving of the external pump 5 , since it is possible to determine that the positional relationship between the external pump 5 and the expansion tank 6 is inappropriate, the installer can immediately reconnect them in an appropriate positional relationship.
  • the hot water heating device 2 includes the hot water supply heat exchanger 19 for performing heat exchange between the heat medium and the hot water supply at the first bypass passage 18 branched off from the heating passage 10 , and the hot water supply can be heated using the heat medium. Therefore, it is possible to configure a hot water heating system 1 having a hot water supply function.
  • the first distribution valve 24 which can adjust the distribution ratio of the heat medium is provided at the branching part of the heating passage 10 and the first bypass passage 18 , it is possible to configure a hot water heating system 1 which can simultaneously perform heating and hot water supply by distributing the heated heat medium for heating and for hot water supply.

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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)
US16/756,462 2017-10-26 2018-10-16 Hot water heating system Abandoned US20210190329A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2017206750A JP6886640B2 (ja) 2017-10-26 2017-10-26 温水暖房システム
JP2017-206750 2017-10-26
PCT/JP2018/038456 WO2019082735A1 (ja) 2017-10-26 2018-10-16 温水暖房システム

Publications (1)

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US20210190329A1 true US20210190329A1 (en) 2021-06-24

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ID=66247362

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/756,462 Abandoned US20210190329A1 (en) 2017-10-26 2018-10-16 Hot water heating system

Country Status (4)

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US (1) US20210190329A1 (ja)
JP (1) JP6886640B2 (ja)
CN (1) CN111247372B (ja)
WO (1) WO2019082735A1 (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004116932A (ja) * 2002-09-27 2004-04-15 Noritz Corp 温水暖房熱源機
JP2004156869A (ja) * 2002-11-07 2004-06-03 Matsushita Electric Ind Co Ltd 温水暖房装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63197823A (ja) * 1987-02-10 1988-08-16 Sanyo Electric Co Ltd 温水暖房装置
CN2053314U (zh) * 1988-12-30 1990-02-21 李春月 低位、开式稳压膨胀器
JP2002286580A (ja) * 2001-03-27 2002-10-03 Tokyo Gas Co Ltd 暖房装置の熱媒漏れ検査装置
JP3833511B2 (ja) * 2001-10-17 2006-10-11 高木産業株式会社 熱源装置
JP2005337632A (ja) * 2004-05-28 2005-12-08 Noritz Corp 熱源装置
KR101155707B1 (ko) * 2010-02-25 2012-06-14 주식회사 경동나비엔 개방형과 밀폐형이 혼합된 팽창탱크를 구비한 가스보일러
GB2481583A (en) * 2010-06-28 2012-01-04 Smith S Environmental Products Ltd Heat pump installation
KR101040693B1 (ko) * 2011-03-10 2011-06-10 윤석구 에너지 절약형 중앙집중식 난방 및 급탕 시스템
JP5708992B2 (ja) * 2011-04-08 2015-04-30 清水建設株式会社 配管システム
JP5884042B2 (ja) * 2011-05-31 2016-03-15 パナソニックＩｐマネジメント株式会社 ヒートポンプ式温水暖房装置
CN103939967A (zh) * 2013-12-11 2014-07-23 汪冶 多层、高层建筑供暖系统高效能节电的技术方法
JP6424463B2 (ja) * 2014-05-22 2018-11-21 株式会社ノーリツ 暖房熱源装置
CN105299728A (zh) * 2014-07-09 2016-02-03 林内株式会社 热水供应与供暖系统
JP2016217657A (ja) * 2015-05-22 2016-12-22 ダイキン工業株式会社 流体式温度調節ユニット

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004116932A (ja) * 2002-09-27 2004-04-15 Noritz Corp 温水暖房熱源機
JP2004156869A (ja) * 2002-11-07 2004-06-03 Matsushita Electric Ind Co Ltd 温水暖房装置

Also Published As

Publication number Publication date
JP6886640B2 (ja) 2021-06-16
JP2019078492A (ja) 2019-05-23
CN111247372B (zh) 2021-12-10
CN111247372A (zh) 2020-06-05
WO2019082735A1 (ja) 2019-05-02

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