EP0570201A1 - Echangeur de chaleur pour chaudière à gaz - Google Patents

Echangeur de chaleur pour chaudière à gaz Download PDF

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Publication number
EP0570201A1
EP0570201A1 EP93303652A EP93303652A EP0570201A1 EP 0570201 A1 EP0570201 A1 EP 0570201A1 EP 93303652 A EP93303652 A EP 93303652A EP 93303652 A EP93303652 A EP 93303652A EP 0570201 A1 EP0570201 A1 EP 0570201A1
Authority
EP
European Patent Office
Prior art keywords
heating
heat
tube
heat exchanger
water
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.)
Withdrawn
Application number
EP93303652A
Other languages
German (de)
English (en)
Inventor
Seok Hwan c/o Goldstar Co. Ltd. Han
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.)
LG Electronics Inc
Original Assignee
Gold Star Co Ltd
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 Gold Star Co Ltd filed Critical Gold Star Co Ltd
Publication of EP0570201A1 publication Critical patent/EP0570201A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
    • 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
    • F24H1/43—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
    • 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
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
    • F24H1/526—Pipes in pipe heat exchangers for sanitary water

Definitions

  • the present invention relates to a heat exchanger, and more particularly to a heat exchanger for a gas boiler which can reduce manufacturing processes and improve the heat-exchanging efficiency thereof by simplifying its structure.
  • a gas boiler is a heating system for domestic use, e.g., for space heating and/or for water heating purposes and is normally provided with a burner and a heat exchanger as the main parts that determine the characteristics and design of the gas boiler. Accordingly, there has been a great effort in developing such main parts in order to provide a compact, efficient, easily produced and inexpensive gas boiler.
  • a conventional heat exchanger for a gas boiler as shown in Figs. 1A and 1B, comprises a plurality of heating tubes 3 arranged around the periphery of a cylindrical gas burner 2 which is vertically mounted on the inner central part of a body 1 of the heat exchanger and has a plurality of flame nozzles 2a, and a plurality of heat-exchanging fins 4 vertically welding-fixed on the outside of the heating tubes 3 at regular intervals so as to increase the heat-exchanging area.
  • the gas boiler is also provided with a bottom 5 for supporting the heating tubes 3 and connecting heating water passages, being installed at the lower part of the body 1, a header 6 for providing passages of the heating water flowing from the lower part of the body 1, being installed at the upper part thereof, and a baffle 7 for partitioning the inner space of the header 6 to enable the heating water to flow smoothly, being installed inside the header 6.
  • two pipes 8 and 9 installed at the lower part of the bottom 5 and coupled to external pipes (not illustrated) to provide water inlet and outlet channels, a ceramic heater 10 for igniting mixed gas, which is installed adjacent to the cylindrical gas burner 2, and a fan 11 for supplying mixed gas to be in combustion into the gas burner 2, installed at the lower part of the gas burner 2, are also provided.
  • the conventional heat exchanger as described above has a problem in that a plurality of heat-exchanging fins 4 for increasing the heat transmission area must be welding-fixed in order to adhere closely about the periphery of heating tubes 3 installed around cylindrical gas burner 2. Also, bottom 5 and header 6 for forming water passages must be respectively welding-fixed at the lower and upper part of heating water tubes 3 in order not to leak water, so that the overall structure is complicated and manufacturing processes and costs are increased. Moreover, when a plurality of heat-exchanging fins 4 are welding-fixed to a plurality of heating water tubes 3, perfect adhesion cannot be practically obtained. Accordingly, it is difficult to perform fixing-work of a regular interval (usually 3-4mm interval) and thus it is impossible to examine the array accuracy of heat-exchanging fins 4. Therefore, heat-exchanging efficiency is degraded.
  • the present invention has been made to overcome the problems involved in the prior art. It is an object of the present invention to provide a heat exchanger for a gas boiler which can reduce the mannfacturing processes and costs and improve the heat-exchanging efficiency by simplifying the structure of the heat exchanger.
  • a heat exchanger for a gas boiler having a gas burner comprising: a tube for heating space-heating water, the tube being wound into a spiral, centering around the gas burner with a predetermined distance therefrom, and having a plurality of heat-exchanging fins formed on the outer peripheral surface of the tube.
  • Fig. 1A is a partially-sectioned perspective view of the conventional heat exchanger for a gas boiler.
  • Fig. 1B is a cross-sectional view taken along the line A-A in Fig. 1A.
  • Fig. 2A is a longitudinal cross-sectional view showing an embodiment of a heat exchanger for a gas boiler according to the present invention.
  • Fig. 2B is a cross-sectional view taken along the line B-B in Fig. 2A.
  • Fig. 3 is a detailed cross-sectional view of C part in Fig. 2B, showing the structures of a heating tube and a hot-water tube according to the embodiment of the present invention.
  • cylindrical gas burner 12 having a plurality of flame nozzles 12a is vertically mounted on the inner central part of body 11, and heating tube 13 having a plurality of heat-exchanging fins 13a formed thereon is wound into a spiral, centering about the periphery of gas burner 12 with a predetermined distance from gas burner 12.
  • hot water tube 14 for exchanging heat with hot water is installed inside heating tube 13 for hot water supply, while heating tube 13 is for space heating.
  • Cylindrical gas burner 2 is fixed on burner-fixing plate 11a of body 11 by a plurality of screws 15.
  • Heating tube 13 is arranged around the periphery of gas burner 12 in a spiral form, being fixed on burner-fixing plate 11a.
  • a plurality of heat-exchanging fins 13a are formed on the outer peripheral surface of heating tube 13, while the height of each fin 13a and the interval between each fin 13a are made to be constant by a rolling (screw thread rolling) process.
  • the outer peripheral surface of hot water tube 14 installed inside heating tube 13 is carved in a spiral form so that the heating water has a turbulent flow and thus flows smoothly, thereby increasing the heat transmission area and improving heat-exchanging efficiency.
  • inlet nipple 18 which is composed of heating water inlet 18a and hot water inlet 18b
  • outlet nipple 19 which is composed of heating water outlet 19a and hot water outlet 19b are formed, respectively.
  • adiabatic vessel 20 is installed to prevent the combustion gas from being directly expelled through exhaust port 23 which is connected to heating tube 13 and installed at the top of body 11, by coupling tubes 21 and 22 so that a portion of the heating water flows through adiabatic vessel 20.
  • Ignition plug 24 is installed to be adjacent to cylindrical gas burner 12, and fan 25 for supplying the mixed gas into gas burner 12 is installed at the lower side of burner 12.
  • the heating water and hot water supplied from inlet nipple 18 flow to the upper part of body 11 through heating tube 13 and hot water tube 14, respectively, exchanging heat with the combustion gas.
  • the heating water and hot water then flow down to the lower part of body 11 through coupling pipe 17 and are respectively exhausted to the external pipes through output nipple 19.
  • the heat transmission area (A) suitable for the determined amount of heat is obtained by the above expression. Thereafter, the length of heating tube 13 can be obtained by converting the heat tramsmission area (A).
  • heat-exchanging fins 13a are formed on the periphery of heating tube 13 by a rolling process, it is possible to reduce the height of heat-exchanging fin 13a from 3-4 millimeters to 2 millimeters or less, while the number thereof can be increased. Accordingly, it is possible to increase the heat transmission area, whereas the length of heating tube 13 can be shorter. Further, it is possible to solve the corrosion problem due to the high heat-exchanging fin 13a of the conventional apparatus and to make the pitch of the heat-exchanging fin 13a shorter.
  • the heat exchanger for a gas boiler according to the present invention has a simpler structure and reduced manufacturing processes, in comparison with the conventional heat exchanger, by reason of the heating tube having heat-exchanging fins formed thereon and wound into a spiral.
  • the present heat exchanger achieves a reduction of manufacturing cost of over 30 percent compared with the conventional heat exchanger as well as achieving an improvement in working efficiency.
  • the present heat exchanger can perform both space heating and water heating even in a compact-structured heat exchanger by installing the heating hot water tube inside the heating tube.
  • the outer peripheral surface of the hot water tube is carved in a spiral form to make the heating water flow turbulently and thus the heat-exchanging efficiency is much improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Fluid Heaters (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
EP93303652A 1992-05-12 1993-05-12 Echangeur de chaleur pour chaudière à gaz Withdrawn EP0570201A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR801092 1992-05-12
KR1019920008010A KR950002487B1 (ko) 1992-05-12 1992-05-12 가스보일러용 열교환장치

Publications (1)

Publication Number Publication Date
EP0570201A1 true EP0570201A1 (fr) 1993-11-18

Family

ID=19332990

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93303652A Withdrawn EP0570201A1 (fr) 1992-05-12 1993-05-12 Echangeur de chaleur pour chaudière à gaz

Country Status (5)

Country Link
EP (1) EP0570201A1 (fr)
JP (1) JPH0642812A (fr)
KR (1) KR950002487B1 (fr)
CN (1) CN1079811A (fr)
RU (1) RU2069294C1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1004410C2 (nl) * 1996-11-01 1998-05-14 Cooperatieve Inkoopvereniging Verwarmingstoestel en werkwijze voor het bedrijven daarvan.
US6152086A (en) * 1997-11-03 2000-11-28 Cooperatieve Inkoopvereniging Heating apparatus and method for operation thereof
EP0845640B1 (fr) * 1996-11-28 2003-04-09 Nefit Buderus B.V. Installation de chauffage avec échangeur de chaleur hélicoidal
EP1348914A1 (fr) 2002-03-28 2003-10-01 Nefit Buderus B.V. Echangeur de chaleur, installation de combustion avec échangeur de chaleur, élément d'obturation pour utilisation dans un tel échangeur de chaleur et méthode de fabrication d'un échangeur de chaleur
GB2447974A (en) * 2007-03-30 2008-10-01 Rbr Associates Ltd Heat exchanger of a condensing boiler
EP2467651A2 (fr) * 2009-08-18 2012-06-27 Sridhar Deivasigamani Échangeur de chaleur à tube de serpentin pour un circuit d'eau chaude sans réservoir
GB2551600A (en) * 2016-06-20 2017-12-27 Evans Peter Boiler

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20022365A1 (it) * 2002-11-07 2004-05-08 Riello Spa Caldaia
DE112005001061T5 (de) 2004-05-11 2008-11-06 Noritz Corporation, Kobe Wärmetauscher und Wasserheizvorrichtung
KR100978811B1 (ko) * 2008-11-28 2010-08-30 린나이코리아 주식회사 열교환기
KR100916997B1 (ko) * 2009-03-05 2009-09-14 한국기계연구원 열교환관 유닛
CN103062749A (zh) * 2013-01-29 2013-04-24 山西省第二建筑工程公司 提高燃气锅炉热效率的方法
KR101475398B1 (ko) * 2013-04-25 2014-12-22 주식회사 두발 보일러 열교환용 혼합관
CN104061683A (zh) * 2014-06-14 2014-09-24 广东万和新电气股份有限公司 燃气锅炉铸铝换热器
FR3047549B1 (fr) * 2016-02-09 2019-05-10 Sermeta Deflecteur pour echangeur de chaleur a condensation et echangeur muni d'un tel deflecteur

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2253493A1 (de) * 1971-11-03 1973-05-10 Steam Engines Systems Corp Waermeaustauscher
EP0385700A1 (fr) * 1989-02-28 1990-09-05 Michael John Nunnerley Appareil d'échange de chaleur, système d'échange de chaleur, méthode pour améliorer l'efficacité d'échange de chaleur, et circuit de réfrigération

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5939215B2 (ja) * 1978-02-22 1984-09-21 株式会社神戸製鋼所 伝熱管の製造方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2253493A1 (de) * 1971-11-03 1973-05-10 Steam Engines Systems Corp Waermeaustauscher
EP0385700A1 (fr) * 1989-02-28 1990-09-05 Michael John Nunnerley Appareil d'échange de chaleur, système d'échange de chaleur, méthode pour améliorer l'efficacité d'échange de chaleur, et circuit de réfrigération

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 315 (M-735)26 August 1988 & JP-A-63 087 597 ( SAKUSHIYON GAS KIKAN SEISAKUSHO:KK ) 18 April 1988 *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 307 (M-435)4 December 1985 & JP-A-60 144 595 ( MITSUBISHI JUKOGYO KK ) 30 July 1985 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1004410C2 (nl) * 1996-11-01 1998-05-14 Cooperatieve Inkoopvereniging Verwarmingstoestel en werkwijze voor het bedrijven daarvan.
WO1998020287A1 (fr) * 1996-11-01 1998-05-14 Cooperatieve Inkoopvereniging 'coopra-Rotterdam' N.V. Appareil de chauffage et son procede de fonctionnement
KR100557803B1 (ko) * 1996-11-01 2006-08-30 코퍼라티브 인코페어에니힝 " 코프라-로테르담" 엔.브이. 가열장치및그작동방법
EP0845640B1 (fr) * 1996-11-28 2003-04-09 Nefit Buderus B.V. Installation de chauffage avec échangeur de chaleur hélicoidal
US6152086A (en) * 1997-11-03 2000-11-28 Cooperatieve Inkoopvereniging Heating apparatus and method for operation thereof
EP1348914A1 (fr) 2002-03-28 2003-10-01 Nefit Buderus B.V. Echangeur de chaleur, installation de combustion avec échangeur de chaleur, élément d'obturation pour utilisation dans un tel échangeur de chaleur et méthode de fabrication d'un échangeur de chaleur
GB2447974A (en) * 2007-03-30 2008-10-01 Rbr Associates Ltd Heat exchanger of a condensing boiler
EP2467651A2 (fr) * 2009-08-18 2012-06-27 Sridhar Deivasigamani Échangeur de chaleur à tube de serpentin pour un circuit d'eau chaude sans réservoir
EP2467651A4 (fr) * 2009-08-18 2014-04-23 Intellihot Inc Échangeur de chaleur à tube de serpentin pour un circuit d'eau chaude sans réservoir
GB2551600A (en) * 2016-06-20 2017-12-27 Evans Peter Boiler
WO2017220999A1 (fr) * 2016-06-20 2017-12-28 Peter Evans Chaudière
GB2551600B (en) * 2016-06-20 2019-05-22 Evans Peter Boiler having an aligned heating element arrangement

Also Published As

Publication number Publication date
KR950002487B1 (ko) 1995-03-20
JPH0642812A (ja) 1994-02-18
KR930023664A (ko) 1993-12-21
RU2069294C1 (ru) 1996-11-20
CN1079811A (zh) 1993-12-22

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