WO2015194785A1 - Chaudière à condensation du type à stockage d'eau chaude - Google Patents

Chaudière à condensation du type à stockage d'eau chaude Download PDF

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Publication number
WO2015194785A1
WO2015194785A1 PCT/KR2015/005818 KR2015005818W WO2015194785A1 WO 2015194785 A1 WO2015194785 A1 WO 2015194785A1 KR 2015005818 W KR2015005818 W KR 2015005818W WO 2015194785 A1 WO2015194785 A1 WO 2015194785A1
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WO
WIPO (PCT)
Prior art keywords
combustion chamber
condensate
combustion
water
exhaust gas
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Application number
PCT/KR2015/005818
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English (en)
Korean (ko)
Inventor
이수현
안성준
Original Assignee
주식회사 경동나비엔
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Publication of WO2015194785A1 publication Critical patent/WO2015194785A1/fr

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    • 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
    • F24H8/00—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
    • F24H8/003—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation having means for moistening the combustion air with condensate from the combustion gases
    • 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
    • F24H1/18—Water-storage heaters
    • 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
    • F24H1/18—Water-storage heaters
    • F24H1/181—Construction of the tank
    • 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
    • F24H1/18—Water-storage heaters
    • F24H1/186—Water-storage heaters using fluid fuel
    • 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
    • F24H8/00—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

Definitions

  • the present invention relates to a low boiling type condensing boiler having a burner using gas or oil as fuel, and in particular, unlike a conventional structure in which sensible heat and latent heat are structurally spaced apart and heat-exchanged, the sensible heat and latent heat heat exchanger is integrally formed.
  • the present invention relates to a low boiling water condensing boiler having a simple structure in which a condensate neutralizer is provided inside a boiler without a device for neutralizing condensate generated during exchange.
  • a combustion chamber 11 in which fuel is combusted by the burner 10 is installed, and in addition to the main heat exchanger 12 that absorbs sensible heat generated by combustion, the main heat exchanger.
  • the latent heat exchanger 16 which recovers the residual heat and the latent heat from the exhaust gas conveyed from the machine 12 is installed spaced apart from the main heat exchanger 12 laterally.
  • the main heat exchanger (12) is provided with a plurality of pipes (14), the inside of which is in communication with the noise chamber (15) above the combustion chamber (11), to which the exhaust gas generated in the combustion chamber (11) is conveyed.
  • a water tank 13 through which the heating water is circulated is provided between the circumference of the combustion chamber 11 and the tube 14, and the sensible heat of the exhaust gas generated through the combustion is transmitted to the heating water circulating in the water tank 13.
  • the exhaust gas conveyed upward from the combustion chamber 11 of the main heat exchanger 12 along the pipe 14 is connected to the upper side of the main heat exchanger 12 and the latent heat exchanger 16. It is conveyed along the exhaust flow path formed by the latent heat exchanger (16) via.
  • the latent heat exchanger (16) is cylindrical in shape and communicates with the upper side of the sump (15), the lower side is provided with a plurality of associations (18).
  • a water tank 17 in which heating water is stored is provided between the pipes 18 so that latent heat of exhaust gas passing through the latent heat exchanger 16 is transferred to the heating water stored in the water tank 17.
  • the condensate receiver 19 collects condensate generated in the latent heat exchanger 16, is in communication with the plumbing 18 of the latent heat exchanger 16, and is coupled with the flue 20.
  • a neutralizer 21 for neutralizing the collected condensate is provided separately under the tube 18.
  • the latent heat exchanger 16 for recovering latent heat from the exhaust gas is separated from the main heat exchanger 12, so that a separate installation is required when the boiler is manufactured, and the condensate neutralizer 21 is Separately installed outside, individual production equipment and production jig should be secured when producing products.
  • a separate production line must be added and new personnel must be added accordingly.
  • the condensing boiler is different from the general oil boiler that absorbs only sensible heat, so the parts are not shared, so there is a problem in that production cost increases and productivity decreases. There is a problem that greatly increases.
  • the integrated condensing boiler as shown in FIG. 2 which integrally forms the sensible heat exchanger and the latent heat exchanger, has a combustion chamber 40 in which fuel is combusted by a burner 41 installed to be burned downward, and the combustion chamber.
  • a plurality of associations 51 and 52 in communication with 40 to allow exhaust gas to pass up and down, a communication chamber 53 coupled to the associations 51 and 52 from the upper side, a heat exchanger 90 and a heating water therein.
  • the water tank 31, the combustion chamber 40, the associated chamber (51, 52) and the water tank 31 comprises a boiler outer cylinder 30 is formed integrally therein.
  • the integrated condensing boiler as described above, even though the sensible heat exchanger and the latent heat exchanger are integrally formed inside the boiler outer cylinder 30, the noise chamber 15 connecting the sensible heat portion and the latent heat portion to the upper portion, and the lower portion,
  • the exhaust gas separation prevention diaphragm 71 must be installed in the installation structure, and the condensate neutralization device 80 must be separately installed. As a result, productivity has been lowered, and there have been problems such as redesigning for light weight and miniaturization.
  • the refractory material 72 such as a castable is installed inside the combustion chamber, there is a problem of increasing the weight of the product and a problem caused by moisture.
  • the condensate neutralization device 80 to provide a separate space in order to discharge the condensate generated in the latent heat to the outside, the installation structure is complicated, the neutralization of the condensate due to the neutralization device 80 is installed outside There is an environmental problem due to the freezing of the device 80.
  • the present invention has been invented to solve the above problems, the sensible heat exchanger and the latent heat exchanger can be manufactured integrally without being separately spaced apart structurally to easily manufacture the boiler, the weight of the product by not using a refractory material And the structure is improved, and the condensate neutralizer is included in the exhaust gas duct to provide a low-temperature condensing boiler that can improve productivity through structural improvements.
  • a low-temperature condensing boiler includes a burner that generates combustion heat and combustion gas while burning, and is arranged such that the burner burns downward and is burned by the burner.
  • the first combustion chamber in which the gas is reversely moved upwardly along the bottom surface and the side of the interior, and the combustion gas formed in the upper portion of the first combustion chamber and moved upward in the first combustion chamber is introduced into the interior fabric.
  • the second combustion chamber which is reversely moved downward along the scene and the side, the upper end is coupled to the lower portion of the second combustion chamber and the lower end is coupled to the lower plate and the plurality of spaced apart along the circumferential direction of the first combustion chamber 1 is arranged in a shape surrounding the combustion chamber and the combustion gas that has moved downward in the second combustion chamber passes through the open top.
  • the upper cover and the lower cover formed on the upper side in a tubular shape that the first combustion chamber, the second combustion chamber and the tube is accommodated therein and discharged downward through the open lower end after being introduced into the interior;
  • the bottom plate is sealed to form an inner space and a blister, a space for storing heating water, is formed therein, a heating return port for allowing the heating water to flow into the blister and a heating outlet for discharging the heating water of the blister are formed in the blister.
  • the stored heating water may include an outer cylinder heat exchanged with the first combustion chamber, the second combustion chamber, and the plumbing.
  • the exhaust gas is formed in the lower portion of the lower plate, the exhaust gas discharged through the lower end of the pipe is discharged to the outside through the internal flue formed inside It may further include a gas duct.
  • the exhaust gas duct is formed in the exhaust gas duct
  • the condensate tank is generated in the pipe and discharged through the bottom of the pipe to collect the condensate
  • a condensate neutralization unit formed inside the exhaust gas duct and neutralized by the condensate neutralizing agent provided therein after being introduced into the condensate collected in the condensate tank and formed in the side.
  • the exhaust gas duct may further include a sensor for detecting the level of condensate collected therein.
  • the low-temperature condensing boiler In the low-temperature condensing boiler according to an embodiment of the present invention, it is formed in the form of wrapping the outer side of the pipe and the second combustion chamber like a coil in the blister, it may further include a hot water heat exchanger in which direct water flows into the inside. .
  • the tube may be formed in a circular or flat shape having a cross-sectional shape.
  • the associating may further include a baffle for promoting turbulent flow of combustion gas therein to promote heat exchange with heating water.
  • the exhaust gas duct may further include a temperature sensor for measuring the temperature of the combustion gas introduced into the inside.
  • the flow path blocking protrusion which is disposed in the blister having a flat plate shape and protrudes downward from the bottom surface, the upward guide protrusion protruding upward from the upper surface, and the flow path blocking protrusion And a heating water flow path diaphragm including a through hole formed to sandwich the linkage between the guide protrusions, wherein the heating water flowing into the blister through the heating return hole is directly connected by the heating water flow path diaphragm. Direct contact with the high temperature region of the lower portion and the lower portion of the first combustion chamber is prevented, and may flow upward along the guide protrusion through the through hole.
  • the combustion heat generated from the burner and the combustion gas moves along the inverted flow path, thereby maximizing thermal efficiency, and further, the first combustion chamber, the second combustion chamber, the associated pipe, etc. Since the structure is arranged in the vertical direction, it is possible to reduce the size and weight of the product, it is possible to simply install by selecting the burner according to the type of fuel using gas or oil as fuel.
  • the first combustion chamber, the second combustion chamber, the tube is installed in the vertical direction on the upper plate of the lower plate provided with the exhaust gas duct, the outer cylinder and the upper cover surrounding the burner and the burner to burn down is also provided in the vertical direction, the screw Or by improving the structure so that it can be easily combined sequentially by welding, there is an effect that can improve the productivity due to the automatic production of the product.
  • the condensate neutralizer is embedded in the exhaust gas duct inside the boiler, thereby solving the problem of condensate freezing generated by the neutralization treatment device installed outside.
  • FIG. 1 is a schematic view showing a cross-sectional shape of a condensing oil boiler according to the prior art.
  • Figure 2 is a schematic diagram schematically showing the cross-sectional shape of the condensing oil boiler according to the prior art.
  • Figure 3 is a schematic diagram showing a cross-sectional shape of the low-water condensing boiler of the present invention.
  • Figure 4 is a perspective view showing a heating water passage diaphragm of the present invention.
  • FIG. 5 is a perspective view of the plumbing and heating water passage diaphragm of the present invention.
  • Figure 6 (a) and (b) is a perspective view and a front view showing the exhaust gas duct of the present invention.
  • Figure 7 is a schematic diagram showing a flow path of the combustion gas in the low-water condensing boiler of the present invention.
  • the low-water condensing boiler includes a burner 100, a first combustion chamber 110, a second combustion chamber 120, an association 310, and an outer cylinder 300 as an embodiment. It may include.
  • the outer cylinder 300 may be closed by an upper side by the upper cover 200 and a lower side by the lower plate 400 to seal the inner space.
  • Low-boiling condensed boiler according to the present invention may be assembled in order from the bottom plate 400, the outer cylinder 300, the top cover 200, the burner 100 in the upper direction.
  • the burner 100 is arranged to burn downward in the first combustion chamber 110 provided in the outer cylinder 300 and generates combustion heat and combustion gas while burning.
  • the first combustion chamber 110 In the interior of the outer cylinder 300, the first combustion chamber 110, the first combustion chamber in which the high temperature combustion heat is primarily heat exchanged with the heating water and the combustion gas is reversely moved upwardly along the bottom surface and the side surface of the inside.
  • the first heat exchanged combustion heat at 110 allows second heat exchange with the heating water, and the combustion gas, which has moved upward from the first combustion chamber 110, flows into the interior and then downwards again along the interior ceiling and the interior side.
  • the second combustion chamber 120 inverted and moved, and the combustion gas transferred from the second combustion chamber 120 is introduced into the inside, and the association 310 for allowing the heating water to undergo a third heat exchange with the residual heat and latent heat of the combustion gas.
  • the outer cylinder 300 may have a cylindrical shape having an advantageous structure for internal pressure, and surrounds the first combustion chamber 110, the second combustion chamber 120, and the associated 310 disposed therein.
  • the inner space is sealed by the upper cover 200 formed on the upper side and the lower plate 400 formed on the lower side.
  • a blister 320 which is a space in which the heating water is circulated, is formed inside the outer cylinder 300, and the heating water in the blister 320 is the first combustion chamber 110, the second combustion chamber 120, and the associated 310.
  • the blister 320 inside the outer cylinder 300 wraps the first combustion chamber 110, the second combustion chamber 120 and the associated 310 in the form of a coil, and the hot water heat exchanger 330 into which direct water flows. Can be installed. Direct water introduced into the hot water heat exchanger 330 may be used as hot water after heat exchange with the heating water.
  • the heating water may be circulated by a circulation pump (not shown in the figure).
  • the heating water returned to the low temperature is returned to the blister 320 through the heating return port 340, and then heat-exchanged with the first combustion chamber 110, the second combustion chamber 120 and the associated 310.
  • the heat exchanged high temperature heating water may be supplied to each room through the heating outlet 350.
  • the direct water introduced into the hot water heat exchanger 330 may be used as hot water by heat exchange with the heating water.
  • the low-temperature condensing boiler according to the present embodiment is such that the low-temperature heating water flowing into the heating return port 340 is not directly in contact with the high temperature region of the pipe 310 and the lower portion of the first combustion chamber 110 immediately after the inflow.
  • a heating water flow path diaphragm 360 may be provided to ensure a constant flow of water and to facilitate smooth heat exchange with the plumbing 310.
  • the heating flow path diaphragm 360 is disposed in the blister 320 while having a flat plate shape.
  • the flow path blocking protrusion 361 protrudes downward in the bottom surface, so that the low-temperature heating water returned to the heating return port 340 immediately after the inflow of the high temperature region and the lower portion of the first combustion chamber 110. Avoid direct contact.
  • an upward guide protrusion 363 may be formed to protrude upward from an upper surface, and a through hole 363 may be formed between the passage blocking protrusion 361 and the guide protrusion 363 so that the connection 310 is fitted. have. The heating water moves smoothly along the flow path upwardly by the upward guide protrusion 363 while passing through the through hole 362, so that the heating water can be heat-exchanged smoothly with the tube 310.
  • association 310 is open, the upper end is coupled to the lower portion of the second combustion chamber 120, and the lower end is coupled to the lower plate 400.
  • a plurality of associations may be arranged to surround the first combustion chamber 110 while being fitted in the aperture 362, for example in a circumferential shape,
  • the association 310 may be circular in shape or flat in shape as shown in FIG. 5. If the cross section of the casing 310 is formed flat, a larger number may be disposed in the through hole 362 along the circumferential direction of the first combustion chamber 110 than when the cross section of the casing 310 is circular. have. In this way, the overall heat transfer area can be increased to enable smooth heat exchange.
  • a baffle 311 for promoting turbulence of the exhaust gas may be inserted into the tube 310 to promote heat exchange with the heating water.
  • the lower end of the association 310 is coupled with the lower plate 400.
  • Combustion gas discharged to the lower side of the lower plate 400 through the lower end of the tube 310 is introduced into the exhaust gas duct 410 formed under the lower plate 400.
  • the internal flue 420 is formed in the exhaust gas duct 410, and the introduced combustion gas may be discharged to the outside through the internal flue 420.
  • the exhaust gas duct 410 may not only be a structure capable of discharging the combustion gas but also may be a structure discharging the condensate generated through heat exchange with the heating water in the association 310 to be discharged to the outside.
  • the condensate generated in the plurality of tubes 310 is collected in the condensate tank 411 formed at the lower portion of the exhaust gas duct 410 while being discharged through the open lower end of the tube 310.
  • a condensate neutralization part 413 may be formed at one side of the condensate tank 411 within the exhaust gas duct 410, and an example having a cylindrical shape is illustrated as an example of the condensate neutralization part 413.
  • the condensate neutralizer 412 is provided inside the condensate neutralizer 413.
  • the condensate hole 414 is formed at the side surface of the condensate neutralizing unit 413.
  • the condensed water collected in the condensate tank 411 is introduced into the condensed water neutralizing unit 413 through the condensed water hole 414.
  • the condensate introduced into the inside may be neutralized by the condensation neutralizer 412, and then discharged to the outside via a hose connected to the condensation outlet pipe 415.
  • the sensor Safe operation of the condensing boiler may be considered by stopping the operation of the burner 100 according to the condensed water level detected as.
  • the exhaust gas duct 410 must have a certain amount of condensate, so that the condensate hole 414 is blocked by the condensate. As the condensate hole 414 is blocked by the condensate, the combustion gas cannot pass through the condensate hole 414, thereby preventing the combustion gas from escaping to the outside through the condensate pipe 415. Therefore, when the condensate is lowered below the low level by detecting the low level state of the condensate, the operation of the burner 100 is stopped to prevent external leakage of the exhaust gas.
  • a temperature sensor (not shown) is attached to the exhaust gas duct 410, and when the temperature measured by the temperature sensor is higher than the set temperature, it is determined that the boiler is in an abnormal state and the operation of the burner 100 is stopped. You can stop.
  • the first combustion chamber 110 has a structure in which a lower portion thereof is closed and an upper portion thereof is connected to the second combustion chamber 120. Therefore, the combustion gas generated by the burner 100 in the first combustion chamber 110 is first heat exchanged with the heating water, and then, along the bottom surface and the inner surface of the first combustion chamber 110, the second combustion chamber ( It is inverted upwardly toward 120 and moved.
  • the second combustion chamber 120 has an upper portion closed and a lower portion thereof is connected with the first combustion chamber 110 and the associated 310.
  • the combustion gas transferred from the first combustion chamber 110 flows into the second combustion chamber 120 and is secondly heat exchanged with the heating water, and then reversed downward along the ceiling surface and the inner surface of the second combustion chamber 120. Move.
  • the association 310 is open at the top and bottom.
  • the upper end of the association 310 is coupled to the lower portion of the second combustion chamber 120, the lower end is coupled to the lower plate 400.
  • the flue gas reversely moving downward in the second combustion chamber 120 is introduced into the tube 310 through an open top of the tube 310, and then exhaust gas ducts through the open bottom of the tube 310. 410 is discharged into.
  • the heating water in the blister 320 will heat-exchange the residual heat and the latent heat with the combustion gas transported through the association 310.
  • Combustion gas discharged from the association 310 is discharged to the outside through the internal flue 420.
  • the first combustion chamber 110, the second combustion chamber 120, and the associated 310 are vertically disposed on the lower plate 400 provided with the exhaust gas duct 410.
  • the outer cylinder 300 and the upper cover 200 and the burner 100 surrounding the same are also provided in the vertical direction, so that they can be easily coupled sequentially by screw assembly or welding, and the like. Productivity can be improved through automatic production of products.
  • Burner 100 can be selected and mounted.
  • burner 110 first combustion chamber
  • baffle 320 blister
  • heating outlet 360 heating water diaphragm

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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)
  • Details Of Fluid Heaters (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)

Abstract

La présente invention concerne une chaudière à condensation du type à stockage d'eau chaude comprenant une structure dans laquelle une première chambre de combustion, une seconde chambre de combustion, un tube de fumée et similaires sont groupés dans la direction verticale à l'intérieur d'une enveloppe externe de chaudière et permettent de fabriquer simplement une chaudière d'un seul tenant puisqu'un échangeur de chaleur sensible et un échangeur de chaleur latente ne sont pas disposés structuralement mais séparément pour être espacés. En outre, aucun matériau réfractaire n'est utilisé, ce qui permet d'améliorer le poids et la structure du produit, un agent de neutralisation de condensat est inclus à l'intérieur d'un conduit de gaz d'échappement, ce qui permet de tenter d'améliorer la productivité par le biais d'une amélioration structurale, et un trajet d'écoulement inverse est formé pour la chaleur de combustion et les gaz de combustion générés dans un brûleur, ce qui permet de tenter de développer au maximum le rendement thermique.
PCT/KR2015/005818 2014-06-18 2015-06-10 Chaudière à condensation du type à stockage d'eau chaude WO2015194785A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2014-0073984 2014-06-18
KR1020140073984A KR101614154B1 (ko) 2014-06-18 2014-06-18 저탕식 콘덴싱 보일러

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WO2015194785A1 true WO2015194785A1 (fr) 2015-12-23

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PCT/KR2015/005818 WO2015194785A1 (fr) 2014-06-18 2015-06-10 Chaudière à condensation du type à stockage d'eau chaude

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KR (1) KR101614154B1 (fr)
WO (1) WO2015194785A1 (fr)

Cited By (8)

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CN106224932A (zh) * 2016-07-26 2016-12-14 苏州必信空调有限公司 具有垂直低阻力冷却系统的锅炉余热回收系统
CN106224933A (zh) * 2016-07-26 2016-12-14 苏州必信空调有限公司 具有垂直低阻力冷却系统的锅炉余热回收系统
CN108180460A (zh) * 2017-12-21 2018-06-19 陈方羽 一种充分燃烧环保节能锅炉
CN108204582A (zh) * 2017-12-21 2018-06-26 陈方羽 一种环保换热节能锅炉
CN108662766A (zh) * 2017-04-01 2018-10-16 芜湖美的厨卫电器制造有限公司 容积式换热装置和具有其的热水器
CN109937334A (zh) * 2017-10-16 2019-06-25 崔荣桓 具有热风产生单元的锅炉
CN112393421A (zh) * 2019-08-12 2021-02-23 A.O.史密斯公司 冷凝热水器中的泄漏检测
US20220228773A1 (en) * 2019-05-09 2022-07-21 Rheem Australia Pty Limited Improvements in or relating to liquid heating and storage apparatus

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KR102435060B1 (ko) * 2019-05-03 2022-08-23 주식회사 경동나비엔 오일 보일러
KR102483154B1 (ko) * 2019-05-03 2023-01-04 주식회사 경동나비엔 화염튜브 및 이를 이용하는 오일 보일러

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KR20130085090A (ko) * 2012-01-19 2013-07-29 최성환 다단 구조를 갖는 저탕식 콘덴싱 보일러

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KR100568779B1 (ko) * 2004-02-16 2006-04-07 주식회사 경동보일러 콘덴싱 기름보일러
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106224933B (zh) * 2016-07-26 2018-11-02 苏州必信空调有限公司 具有垂直低阻力冷却系统的锅炉余热回收系统
CN106224933A (zh) * 2016-07-26 2016-12-14 苏州必信空调有限公司 具有垂直低阻力冷却系统的锅炉余热回收系统
CN106224932A (zh) * 2016-07-26 2016-12-14 苏州必信空调有限公司 具有垂直低阻力冷却系统的锅炉余热回收系统
CN106224932B (zh) * 2016-07-26 2018-11-02 苏州必信空调有限公司 具有垂直低阻力冷却系统的锅炉余热回收系统
CN108662766A (zh) * 2017-04-01 2018-10-16 芜湖美的厨卫电器制造有限公司 容积式换热装置和具有其的热水器
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