US20170363359A1 - Finless-type dual-pipe heat exchange apparatus - Google Patents

Finless-type dual-pipe heat exchange apparatus Download PDF

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Publication number
US20170363359A1
US20170363359A1 US15/539,676 US201515539676A US2017363359A1 US 20170363359 A1 US20170363359 A1 US 20170363359A1 US 201515539676 A US201515539676 A US 201515539676A US 2017363359 A1 US2017363359 A1 US 2017363359A1
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United States
Prior art keywords
heat exchange
pipe
chamber
pipes
heat transfer
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Abandoned
Application number
US15/539,676
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English (en)
Inventor
Myong Hun CHOI
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Individual
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Individual
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Publication of US20170363359A1 publication Critical patent/US20170363359A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/34—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water chamber arranged adjacent to the combustion chamber or chambers, e.g. above or at side
    • F24H1/36—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water chamber arranged adjacent to the combustion chamber or chambers, e.g. above or at side the water chamber including one or more fire tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F28D21/0005—Recuperative heat exchangers the heat being recuperated from exhaust gases for domestic or space-heating systems
    • F28D21/0007—Water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/12—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically the surrounding tube being closed at one end, e.g. return type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions

Definitions

  • the present invention relates to a finless-type dual-pipe heat exchange apparatus, and more particularly, to a finless-type dual-pipe heat exchange apparatus that performs dual heat exchange in inner and outer pipes as heat exchange pipes, thereby increasing a heat transfer area and achieving a high heat exchange rate.
  • a high-efficiency heat exchanger has been proposed.
  • a structure for forming an exhaust gas flow path is configured such that heat exchange is performed on only one surface, i.e., an outer side surface or an inner side surface, of a heat exchange pipe, and thus sufficient heat exchange cannot be performed.
  • heat transfer in contact with a combustion gas in a unit heat exchange pipe is performed only on one surface of outer and inner side surfaces of the unit heat exchange pipe, and thus a sufficient heat transfer area cannot be obtained.
  • the present invention has been made in view of the conventional problems, and it is one object of the present invention to provide a finless-type dual-pipe heat exchange apparatus including heat exchange pipes formed as a finless dual pipe, configured such that a fluid as a heat transfer medium flows between outer and inner pipes, and thus flames generated by a burner first heat the inner pipes as heat exchange pipes formed as a finless dual pipe to thereby perform primary heat transfer, and a high-temperature combustion gas is discharged via an exhaust gas flow path formed in the finless dual-pipe-type inner pipes and the discharged exhaust gas flows into a secondary heat exchange space formed in a hot water tank surrounding the heat exchange apparatus to thereby perform secondary heat transfer with the outer pipes of the heat exchange apparatus, thereby increasing a heat transfer area and a heat exchange rate.
  • the heat exchange apparatus is configured such that an exhaust gas flow path is formed in a chamber first heated by flames generated by the burner, of chambers, opposite side surfaces of which are connected to the inner and outer pipes, to penetrate the chamber, so that an exhaust gas flows into the second heat exchange space formed inside the hot water tank, and thus meets with the exhaust gas introduced via the exhaust gas flow path of the inner pipe, thereby uniformly transferring heat to the secondary heat exchange space formed in the hot water tank and, as a result, heat exchange is performed with high efficiency.
  • a heat exchange apparatus in which a plurality of dual-pipe outer pipes 121 is attached to first and second chambers 123 and 124 having a cylindrical or box shape to penetrate inner side surfaces thereof.
  • a plurality of dual-pipe inner pipes 122 is attached to penetrate outer side surfaces of the first and second chambers 123 and 124 by penetrating the dual-pipe outer pipes 121 , thereby forming a heat transfer medium flow path 125 between the outer and inner pipes 121 and 122 so that a fluid, which is a heat transfer medium, flows into the first and second chambers 123 and 124 .
  • inner side surfaces of the inner pipes 122 are formed as an exhaust gas flow path 126 , and thus flames generated by the burner 110 are discharged along the dual-pipe-type inner pipes 122 as heat exchange pipes, thereby performing primary heat exchange.
  • a high-temperature combustion gas is discharged via the exhaust gas flow path 126 formed in the dual-pipe inner pipes 122 and introduced into a secondary heat exchange space 150 formed inside a hot water tank 130 to heat the outer pipes 121 , thereby performing secondary heat exchange, whereby a heat transfer area may be increased.
  • the first chamber 123 first heated by flames generated by a burner is provided with an exhaust gas conduit 126 a to penetrate the first chamber 123 , through which an exhaust gas flows into the secondary heat exchange space 150 formed in the heat water tank 130 to meet with the exhaust gas discharged from the inner pipes 122 so as to perform secondary heat exchange by heating the outer pipes 121 , thereby uniformly transferring high heat to the secondary heat exchange space formed in the hot water tank.
  • the heat exchange pipes are formed as a dual pipe such that the inner pipes 122 are positioned to penetrate the outer pipes 121 , thereby forming the heat transfer medium flow path 125 between the outer and inner pipes.
  • the first and second chambers 123 and 124 having a cylindrical or rectangular box shape are connected to both ends of the pipes.
  • the dual-pipe-type inner pipes 122 are penetratively connected to inner side surfaces of the chambers
  • the dual-pipe-type outer pipes 121 are penetratively installed at opposite side surfaces of end sides of the chambers, thereby forming the heat transfer medium flow path 125 between the outer and inner pipes 121 and 122
  • barriers 129 are formed in the first and second chambers 123 and 124 to allow a fluid as a heat transfer medium to flow between the first and second chambers 123 and 124 .
  • the exhaust gas flow path 126 is formed in inner side surfaces of the dual-pipe-type inner pipes installed to penetrate the both ends of the chambers 123 and 124 installed on the both ends of the pipes, so that the exhaust gas is discharged through the chambers installed at both sides of the heat exchange pipes.
  • any one of the first and second chambers 123 and 124 is provided with a supply pipe 127 protruding from an outer side surface thereof to connect pipes for supplying and discharging a heat transfer medium, and a barrier 129 is positioned between the supply pipe 127 and a discharge pipe 128 in the first and second chambers 123 and 124 to divide the internal space thereof into a supply pipe side compartment and a discharge pipe side compartment.
  • flames generated by the burner 110 first heat dual-pipe-type inner pipes 122 , as heat exchange pipes, thereby performing primary heat exchange, and a high-temperature combustion gas is discharged via the exhaust gas flow path 126 formed in the dual-pipe-type inner pipes 122 and introduced into the secondary heat exchange space 150 formed in the hot water tank 130 to heat the outer pipes 121 , thereby performing secondary heat exchange, whereby a heat transfer area may be increased.
  • the first chamber 123 first heated by flames generated by the burner is provided with an exhaust gas conduit 126 a penetrating the first chamber 123 to allow the exhaust gas to flow into the secondary heat exchange space 150 formed in the hot water tank 130 to meet with the exhaust gas discharged from the inner pipes 122 so as to perform secondary heat exchange by heating the outer pipes 121 , thereby uniformly transferring high heat to the secondary heat exchange space formed in the hot water tank.
  • the present invention advantageously provides a finless-type dual-pipe heat exchange apparatus including heat exchange pipes formed as a dual pipe, in which dual heat transfer is performed through a fluid, which is a heat transfer medium, thereby increasing a heat transfer area and a heat exchange rate.
  • the increased heat exchange rate as described above may significantly contribute to energy saving.
  • FIG. 1 is a state diagram illustrating heat flow generated by a burner in a state in which a finless-type dual-pipe heat exchange apparatus according to an embodiment of the present invention is installed.
  • FIG. 2 is a state diagram illustrating heat medium (hot water) flow in a state in which a finless-type dual-pipe heat exchange apparatus according to an embodiment of the present invention is installed.
  • FIG. 3 is a front cross-sectional view of the finless-type dual-pipe heat exchange apparatus.
  • FIG. 4 is a front view of the finless-type dual-pipe heat exchange apparatus.
  • FIG. 5 is a front cross-sectional view of a heat water tank.
  • FIG. 6 illustrates a plan view and a cross-sectional view of a structure of the finless-type dual-pipe heat exchange apparatus according to the present invention in which sides of chambers to which supply and discharge pipes are attached and sides to which a dual pipe is attached.
  • FIG. 7 illustrates a plan view and a cross-sectional view of a structure of the finless-type dual-pipe heat exchange apparatus according to the present invention in which a dual pipe is attached to sides of chambers, opposite to the sides of chambers to which supply and discharge pipes are attached.
  • the finless-type dual-pipe heat exchange apparatus has the following structure including:
  • first and second chambers 123 and 124 positioned on opposite sides;
  • a plurality of outer pipes 121 opposite sides of each of which are penetratively coupled to an inner surface 123 a of the first chamber 123 and an inner surface 124 a of the second chamber 124 , respectively, to connect the first and second chambers 123 and 124 so as to allow a fluid to flow therebetween;
  • a hot water tank 130 to accommodate the second chamber 124 and the outer pipes 121 ;
  • a barrier 129 to separate an internal space of the first chamber 123 into a side of the heat transfer medium supply pipe 127 and a side of the discharge pipe 128 ;
  • a burner 110 provided at an outer surface side of the first chamber 123 to supply a heat source.
  • the heat source of the burner 110 heats the inner pipes 122 while passing through an exhaust gas flow path 126 of the inner pipes 122 , and then heats the outer pipes 121 while moving towards a gas duct 134 of the hot water tank 130 and passing through outer surfaces of the outer pipes 121 .
  • the first chamber 123 is provided with n barriers 129
  • the second chamber 124 is provided with n ⁇ 1 barriers 129 , and thus secondary heat transfer is performed while the heat transfer medium introduced into the heat transfer medium supply pipe 127 reciprocates between the first chamber 123 and the second chamber 124 n times.
  • the hot water tank 130 includes a hot water chamber 131 connected to the first chamber 132 via a connection pipe 132 to receive and store the heat transfer medium, and a discharge connection hole 133 to discharge the heat transfer medium to the outside.
  • the first chamber 123 is provided with an exhaust gas conduit 126 a penetrating inner and outer surfaces thereof, through which the heat source of the burner 110 is introduced into an inner second heat exchange space 150 of the hot water tank 130 to heat the outer pipes 121 while moving towards the gas duct 134 and passing through the outer surfaces of the outer pipes 121 .
  • heat exchange pipes 121 and 122 are formed as a finless dual-pipe, and thus flames generated by the burner 110 first heat the dual-pipe-type inner pipes 122 , thereby performing primary heat exchange.
  • a high-temperature combustion gas is discharged via the exhaust gas flow path 126 formed in the inner pipes 122 and introduced into the secondary heat exchange space 150 formed in the hot water tank 130 to heat the outer pipes 121 , thereby performing secondary heat exchange.
  • the first chamber 123 first heated by flames generated by the burner 110 is provided with the exhaust gas flow path 126 penetrating the first chamber 123 to allow the exhaust gas to flow into the secondary heat exchange space 150 formed in the hot water tank 130 and meets with the exhaust gas discharged from the inner pipes 122 so as to perform secondary heat exchange by heating the outer pipes 121 , thereby uniformly transferring high heat to the secondary heat exchange space formed in the hot water tank.
  • the heat transfer medium flow path 125 is formed between the outer pipes 121 and the inner pipes 122 to allow the heat transfer medium (hot water) 140 to flow into the chambers 123 and 124 from the chambers 123 and 124 and allow the heated heat transfer medium (hot water) 140 to flow into the hot water tank 130 , so that the hot water in the hot water tank 130 is maintained at an appropriate temperature by heat inside the secondary heat exchange space 150 formed between heat exchange apparatuses 120 in a side surface of the hot water tank 130 .
  • the heat exchange pipes 121 and 122 constituting a heat exchange part, are arranged as a finless dual pipe so as to flow the heat transfer medium (hot water) 140 between the outer and inner pipes 121 and 122 , and the first and second chambers 123 and 124 are positioned at both ends of the pipes to supply and discharge the heat transfer medium 140 .
  • the finless-type dual-pipe heat exchange apparatus 120 includes the first and second chambers 123 and 124 constituting a body part of the heat exchange apparatus and attached to opposite side surfaces thereof and a plurality of dual-pipe-type heat exchange pipes 121 and 122 connected to the first and second chambers 123 and 124 .
  • the outer pipes 121 are attached to the first and second chambers 123 and 124 to penetrate inner side surfaces thereof in a direction in which the pipes are attached, and the inner pipes 122 are attached to the first and second chambers 123 and 124 to penetrate outer side surfaces thereof in a direction in which the pipes are attached, thereby forming the fluid conduit 125 so as to allow the fluid 140 inside the first and second chambers 123 and 124 to flow between the first chamber 123 and the second chamber 124 .
  • the exhaust gas flow path 126 is formed in inner side surfaces of the inner pipes 122 , and thus the exhaust gas passes through the first and second chambers 123 and 124 installed on opposite sides of the heat exchange pipes 121 and 122 to be discharged therefrom.
  • the first chamber 123 first heated by flames generated by the burner 110 is provided with the exhaust gas conduit 126 a to penetrate the first chamber 123 , through which the exhaust gas of the burner 110 is directly sent to the secondary heat exchange space 150 formed in the hot water tank 130 and is brought into contact with the exhaust gas introduced via the exhaust gas flow path 126 of the inner pipes 122 , thereby uniformly transferring heat to the secondary heat exchange space 150 formed in the hot water tank 130 .
  • the finless-type dual-pipe heat exchange apparatus 120 of the present invention performs dual heat exchange using flames and the exhaust gas for high heat generated from the burner 110 , whereby a heat transfer area and a heat exchange rate may be increased.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Fluid Heaters (AREA)
US15/539,676 2014-12-24 2015-11-27 Finless-type dual-pipe heat exchange apparatus Abandoned US20170363359A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR10-2014-0187731 2014-12-24
KR1020140187731A KR101659786B1 (ko) 2014-12-24 2014-12-24 핀리스 타입 이중관 열 교환장치
PCT/KR2015/012824 WO2016104969A1 (ko) 2014-12-24 2015-11-27 핀리스 타입 이중관 열 교환장치

Publications (1)

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US20170363359A1 true US20170363359A1 (en) 2017-12-21

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US15/539,676 Abandoned US20170363359A1 (en) 2014-12-24 2015-11-27 Finless-type dual-pipe heat exchange apparatus

Country Status (6)

Country Link
US (1) US20170363359A1 (ko)
EP (1) EP3239637A4 (ko)
JP (1) JP2018502272A (ko)
KR (1) KR101659786B1 (ko)
CN (1) CN107110611A (ko)
WO (1) WO2016104969A1 (ko)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101952262B1 (ko) * 2017-07-11 2019-02-26 최명헌 핀리스타입 다관식 이중관 모듈형 열교환장치

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3805745A (en) * 1972-05-31 1974-04-23 Raypak Inc Boiler for use with gaseous fuel or oil
US4391227A (en) * 1980-04-14 1983-07-05 Kernforschungsanlage Julich Gmbh Fluid-heating apparatus
US5771711A (en) * 1996-03-01 1998-06-30 Sanyo Electric Co., Ltd. High-temperature regenerator
US6352054B1 (en) * 1997-10-20 2002-03-05 Toyota Jidosha Kabushiki Kaisha Catalytic combustion heater
KR200414752Y1 (ko) * 2006-02-06 2006-04-24 주식회사 화진 화염 와류형 보일러
US7823543B2 (en) * 2004-09-15 2010-11-02 Nomura Reinetsu Yugengaisha Heat exchanging apparatus and superheated steam generating apparatus using the same
US20170350662A1 (en) * 2016-06-06 2017-12-07 Aerco International, Inc. Fibonacci optimized radial heat transfer

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US2079546A (en) * 1936-06-24 1937-05-04 Conekin Dawson Steam and hot water boiler
US2413360A (en) * 1940-10-02 1946-12-31 Walter Maguire Company Inc Heat exchanger
FR1069513A (fr) * 1952-03-07 1954-07-08 Chaudière tubulaire à tubes à feu et tubes à eau échangeurs concentriques
US2709991A (en) * 1954-03-30 1955-06-07 Howard W Wiegand Boiler
GB2244799A (en) * 1990-05-30 1991-12-11 Welmark Limited Boiler unit
CN2308846Y (zh) * 1997-05-05 1999-02-24 王学江 热导套管煤气加热炉
KR100426376B1 (ko) * 2001-04-03 2004-04-08 박창덕 온수 보일러
KR20010100189A (ko) * 2001-10-29 2001-11-14 안승찬 이중관 보일러
KR20030037904A (ko) * 2001-11-07 2003-05-16 골드라인 링조인트주식회사 이중 열 교환기를 갖는 난방기
CN100547313C (zh) * 2006-05-31 2009-10-07 朴显泽 一种套管锅炉
KR20120104698A (ko) * 2011-03-14 2012-09-24 한전케이피에스 주식회사 열교환기

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3805745A (en) * 1972-05-31 1974-04-23 Raypak Inc Boiler for use with gaseous fuel or oil
US4391227A (en) * 1980-04-14 1983-07-05 Kernforschungsanlage Julich Gmbh Fluid-heating apparatus
US5771711A (en) * 1996-03-01 1998-06-30 Sanyo Electric Co., Ltd. High-temperature regenerator
US6352054B1 (en) * 1997-10-20 2002-03-05 Toyota Jidosha Kabushiki Kaisha Catalytic combustion heater
US7823543B2 (en) * 2004-09-15 2010-11-02 Nomura Reinetsu Yugengaisha Heat exchanging apparatus and superheated steam generating apparatus using the same
KR200414752Y1 (ko) * 2006-02-06 2006-04-24 주식회사 화진 화염 와류형 보일러
US20170350662A1 (en) * 2016-06-06 2017-12-07 Aerco International, Inc. Fibonacci optimized radial heat transfer

Also Published As

Publication number Publication date
KR101659786B1 (ko) 2016-09-26
KR20160077611A (ko) 2016-07-04
JP2018502272A (ja) 2018-01-25
WO2016104969A1 (ko) 2016-06-30
EP3239637A4 (en) 2018-08-29
CN107110611A (zh) 2017-08-29
EP3239637A1 (en) 2017-11-01

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