US20070204980A1 - Heat Exchanger for Common Use for Boiler and Hot Water Supply - Google Patents
Heat Exchanger for Common Use for Boiler and Hot Water Supply Download PDFInfo
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- US20070204980A1 US20070204980A1 US10/592,651 US59265105A US2007204980A1 US 20070204980 A1 US20070204980 A1 US 20070204980A1 US 59265105 A US59265105 A US 59265105A US 2007204980 A1 US2007204980 A1 US 2007204980A1
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- Prior art keywords
- heat exchanger
- heat
- inner plate
- combustion
- tubes
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Classifications
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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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
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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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
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- 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
- F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
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- 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
- F28D7/02—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 helically coiled
- F28D7/024—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 helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
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- 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
- F28D7/08—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 otherwise bent, e.g. in a serpentine or zig-zag
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- 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
- F28D7/08—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 otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—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 otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
- F28D7/085—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 otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions
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- 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
- F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
Definitions
- the present invention relates to a heat exchanger for common use for a boiler and a hot water supply, and more particularly to, a heat exchanger for common use for a boiler and a hot water supply in which a combustion chamber and a common heat exchanger can be used in common when manufacturing a non-condensing, semi-condensing and condensing boiler, to thereby make it possible to manufacture the non-condensing, semi-condensing and condensing boiler.
- a boiler for use in general homes and buildings is used for heating rooms and supplying hot water, which is divided into a fuel oil boiler and a fuel gas boiler, according to a type of fuel used.
- LPG liquified petroleum gas
- LNG liquified natural gas
- a gas boiler can be divided into a variety of types according to a control method or a sealing state thereof. Further, a gas boiler can be classified into a condensing gas boiler and a non-condensing gas boiler according to a method of re-collecting heat sources heating water.
- a heat exchanger for use in a condensing boiler includes a combustion heat exchanger 29 which heats water directly using heat from a burner 10 , and a latent heat exchanger 28 which heats water indirectly using latent heat of an exhaust gas passing through the combustion heat exchanger 29 .
- a condensed water basin 32 which externally guides condensed water due to an exhaust gas is provided between the combustion heat exchanger 29 and the latent heat exchanger 28 .
- a guide plate 33 slants at the same angle as the condensed water basin 32 .
- An exhaust gas discharge portion 36 is formed in opposition to the exhaust gas inlet 31 .
- the exhaust gas passing through the combustion heat exchanger 29 flows in via one side of the latent heat exchanger 28 by the condensed water basin 32 , passes through latent fin tubes 28 ′, and is discharged via an exhaust gas outlet 37 in an exhaust gas discharge portion 36 . Accordingly, heat can be transferred toward the latent heat exchanger 28 for a sufficient time.
- a heat exchanger 30 is directly heated by combustion of a burner 10 , and an exhaust gas is discharged via an exhaust gas outlet 37 .
- the non-condensing heat exchanger 30 is generally made of a copper material whose heat transfer rate is excellent. Since a high heat efficiency is pursued due to an energy policy and a control technology is developed, the non-condensing heat exchanger is designed to suppress condensation at maximum. However, a condensation phenomenon cannot be prevented from occurring partially or temporarily, which causes the heat exchanger to be corroded.
- the heat exchanger of the condensing boiler shown in FIGS. 1 and 2 differs in its construction from that of the non-condensing boiler shown in FIGS. 3 and 4 , due to respectively different heat absorption methods.
- a latent heat exchanger or a non-condensing heat exchanger called an auxiliary heat exchanger
- a heat exchanger for a condensing and non-condensing gas boiler can be manufactured with a common heat exchanger according to the present invention. Accordingly, the heat exchanger for a gas boiler can be manufactured at low cost. Also, since two kinds of heat exchangers can be manufactured with a common heat exchanger, an additional process is not necessary.
- a non-condensing boiler adopting a common heat exchanger according to the present invention has a high efficiency.
- FIGS. 1 and 2 are a perspective view and a cross-sectional view showing a conventional condensing heat exchanger, respectively;
- FIGS. 3 and 4 are a perspective view and a cross-sectional view showing a conventional non-condensing heat exchanger, respectively;
- FIG. 5 is a perspective view showing a common heat exchanger according to the present invention.
- FIG. 6 is an exploded perspective view showing a common heat exchanger according to the present invention.
- FIG. 7 is an exploded perspective view showing a common heat exchanger of FIG. 6 which additionally has an outer cover according to another embodiment of the present invention.
- FIG. 8 is a perspective view showing an example of a condensing heat exchanger to which the common heat exchanger shown in FIG. 7 according to the present invention is applied;
- FIG. 9 is an exploded perspective view showing the condensing heat exchanger shown in FIG. 8 according to the present invention.
- FIG. 10 is an exploded perspective view showing only a latent heat exchanger separated from the condensing heat exchanger shown in FIG. 8 according to the present invention.
- FIG. 11 is an exploded perspective view showing the latent heat exchanger shown in FIG. 10 according to the present invention.
- FIG. 12 is a cross-sectional view showing the condensing heat exchanger shown in FIG. 8 according to the present invention.
- FIG. 13 is a perspective view showing an example of a non-condensing heat exchanger to which the common heat exchanger shown in FIG. 7 according to the present invention is applied;
- FIG. 14 is an exploded perspective view showing the non-condensing heat exchanger shown in FIG. 13 according to the present invention.
- FIG. 15 is a cross-sectional view showing the non-condensing heat exchanger shown in FIG. 13 according to the present invention.
- a heat exchanger for common use for a boiler and a hot water supply comprising: a plurality of inner plate members having inner plate member grooves formed on either side of the upper end thereof, and a burner provided on the bottom surface thereof, to thereby perform a combustion chamber function; combustion heat fin tubes formed of a number of heat exchange tubes on the outer circumferential surface of which transfer heat fins are formed so that a heat exchange is performed by hot water flows in the transfer heat fins in which the combustion heat fin tubes are mounted into the inner plate member grooves provided in the inner plate member; a heat insulation member which is installed in an identical area along the inner walls of the inner plate members; and an independent heat exchanger body which is connected with the combustion heat fin tubes so that hot water can flow and is formed of a plurality of water tubes wound on the outer circumferential surfaces of the inner plate members.
- an outer cover is further installed at the outermost portion of the heat exchanger body so as to surround the plurality of water tubes wound on the outer circumferential surfaces of the inner plate members.
- a structure of a condensing boiler is formed in the case that a latent heat exchanger having latent fin tubes absorbing latent heat in the latent heat exchanger body is independently combined on the upper portion of the heat exchanger body.
- a duct is formed between the heat exchanger body and the latent heat exchanger to thus make an exhaust gas smoothly flow.
- a structure of a non-condensing boiler having a relatively high output capacity is formed in the case that an auxiliary heat exchanger absorbing only combustion heat is independently combined on the upper portion of the heat exchanger body.
- FIG. 5 is a perspective view showing a common heat exchanger according to the present invention.
- FIG. 6 is an exploded perspective view showing a common heat exchanger according to the present invention.
- FIG. 7 is an exploded perspective view showing a common heat exchanger of FIG. 6 which additionally has an outer cover according to another embodiment of the present invention.
- a common heat exchanger 1 largely includes a plurality of inner plate members 110 , combustion heat fin tubes 120 , a heat insulation member 130 , and water tubes 140 , all of which are formed as an independent heat exchanger body 100 .
- the inner plate members 110 perform a combustion chamber function as in a conventional heat exchanger.
- the inner plate members 110 has a rectangular box structure having a burner (not shown) which burns air and gas inhaled by operation of a blower (not shown) provided on the bottom surface thereof, and a plurality of inner plate member grooves 111 into which the plurality of combustion heat fin tubes 120 are assembled on both sides of the upper end thereof, to thereby perform a combustion chamber function in a boiler.
- windows 112 can be provided on the inner plate members 110 so that a user can monitor a burning flame from the outside of the heat exchanger.
- the combustion heat fin tubes 120 are formed of a number of heat exchange tubes on the outer circumferential surface of which transfer heat fins are formed so that a heat exchange is performed by hot water flows in the transfer heat fins. It is preferable that the combustion heat fin tubes 120 are made of a copper material whose heat transfer rate is excellent as in a conventional heat exchanger in a conventional gas boiler, and it is manufactured to have a structure of contacting combustion heat due to combustion of the burner as a number of times as possible.
- combustion heat fin tubes 120 One end of the combustion heat fin tubes 120 is connected with a hot water supply tube (not shown) of a gas boiler and the other end thereof is connected with a fin tube of a latent heat exchanger 53 or a non-condensing heat exchanger to be described later.
- the combustion heat fin tubes 120 are connected in zigzag form via U-shaped tubes 121 . Accordingly, the plurality of the combustion heat fin tubes 120 form a single long tube so that water flowing therein is heat-exchanged with the combustion heat, to thus perform a combustion chamber function.
- the U-shaped tubes 121 are made of the same material as that of the combustion heat fin tubes 120 in order to prevent a corrosion occurring in hybrid metal between the U-shaped tubes 121 and the combustion heat fin tubes 120 .
- the hot water which flows in via one end of the combustion heat fin tubes 120 from the hot water supply tube flows along the respective combustion heat fin tubes 120 via the U-shaped tubes 121 so as to be heat-exchanged with the combustion heat from the burner for a long time.
- a heat insulation member 130 is installed in the inner plate members 110 in order to isolate combustion heat from being discharged out via the inner plate members 110 in the case that combustion occurs in the inside of the inner plate members 110 .
- the insulation material 130 is provided over the whole inner walls of the inner plate members 110 , the insulation member 130 is installed in the inner walls of the inner plate members 110 in the same area and substantially same structure as those of the inner plate members 110 .
- a plurality of water tubes 140 connected with the combustion heat fin tubes 120 are wound on the outer circumferential surfaces of the inner plate members 110 , in order to absorb the combustion heat discharged from the inner plate members 110 as much as possible, to thus enhance a heat efficiency.
- an outer cover 150 is further installed at the outermost portion of the heat exchanger body so as to surround the plurality of water tubes 140 wound on the outer circumferential surfaces of the inner plate members 110 .
- the outer cover 150 has a structure of the same shape as that of the inner plate members 110 , like the insulation member 130 .
- the outer cover 150 can absorb heat discharged from the combustion chamber via the inner plate members 110 to a degree using a material of metal, and isolate the outer portions of the inner plate members 110 from users to thereby protect them safely from contacting the hot portions. Further, the outer cover 150 does not expose the water tubes 140 wound on the outer walls of the inner plate members 110 , to thereby play a role of making an external countenance look good.
- the water tubes 140 wound on the outer walls of the inner plate members 110 can absorb the high-temperature combustion heat to thus primarily heat-exchange with the combustion heat, and simultaneously isolate heat discharged from the outer cover 150 to further prevent a thermal loss.
- the outer cover 150 absorbs a relatively small amount of heat, the surface temperature of the outer cover 150 is remarkably lowered. Although users get in touch with the outer cover 150 , a danger of a burn can be reduced.
- the common heat exchanger 1 In the case that the common heat exchanger 1 is manufactured, a burner is provided on the bottom surface of the inner plate members 110 , and then the combustion heat fin tubes 120 are assembled with a plurality of inner plate member grooves 111 provided on either side of the upper end of the inner plate members 110 . Then, the plurality of combustion heat fin tubes 120 are connected via U-shaped tubes 121 excluding one end and the other end of the plurality of the combustion heat fin tubes 120 .
- a condensing gas boiler or non-condensing boiler can be manufactured as desired.
- FIG. 8 is a perspective view showing an example of a condensing heat exchanger to which the common heat exchanger shown in FIG. 7 according to the present invention is applied.
- FIG. 9 is an exploded perspective view showing the condensing heat exchanger shown in FIG. 8 according to the present invention.
- FIG. 10 is an exploded perspective view showing only a latent heat exchanger separated from the condensing heat exchanger shown in FIG. 8 according to the present invention.
- FIG. 11 is an exploded perspective view showing the latent heat exchanger shown in FIG. 10 according to the present invention.
- FIG. 12 is a cross-sectional view showing the condensing heat exchanger shown in FIG. 8 according to the present invention.
- a latent heat exchanger 2 which can absorb latent heat from an exhaust gas is independently combined on the upper portion of a common heat exchanger 1 according to the present invention, to thus form a condensing heat exchanger.
- a separate duct 300 is formed between the common heat exchanger 1 and the latent heat exchanger 2 to thus make an exhaust gas smoothly flow in the case that the latent heat exchanger 2 is combined with the common heat exchanger 1 .
- the duct 300 is combined on the upper portion of the combustion heat fin tubes 120 in the common heat exchanger 1 .
- the duct 300 includes an exhaust gas outlet 303 through which an exhaust gas having passed through the combustion heat fin tubes 120 is discharged and which is provided on part of the upper surface 301 thereof, and an inclined surface 302 provided in opposition to the exhaust gas outlet 303 .
- the latent heat exchanger body 200 of the latent heat exchanger 2 is combined on the duct 300 .
- the bottom surface of the latent heat exchanger body 200 has a structure corresponding to the upper surface 301 and the inclined surface 302 of the duct 300 , and has an exhaust gas inlet 201 in correspondence to the same position as that of the exhaust gas outlet 303 .
- a condensed water outlet 202 through which condensed water formed due to the exhaust gas is discharged is provided on the lowermost end of the bottom surface of the latent heat exchanger body 200 .
- a plurality of latent heat fin tubes 210 through which hot water flows are provided in the latent heat exchanger body 200 .
- the latent heat fin tubes 210 perform a heat exchange like the combustion heat fin tubes 120 in the common heat exchanger 1 , and are preferably made of a corrosion-resistant material such as aluminum and stainless steel, to thereby prevent corrosion due to condensation. More preferably, the latent heat fin tubes 210 are made of a plurality of tubes each having a double structure, in which a copper tube is inserted into the inside of an aluminum tube whose cost is lower than that of the cooper tube, differently from the combustion heat fin tubes 120 which are made of copper tubes.
- the latent heat fin tubes 210 are fitted with separate lateral plates 220 which cover the lateral surfaces of the latent heat exchanger body 200 , and are connected with each other by U-shaped tubes 221 , to thereby form a single tube through which hot water can flow.
- the latent heat fin tubes 210 are connected with the combustion heat fin tubes 120 and a hot water inlet tube (not shown) both which are positioned below the latent heat fin tubes 210 , through connection tubes 222 and 223 .
- hot water having flown in from the connection tube 223 through the unshown hot water inlet tube flows through the plurality of latent heat fin tubes 210 for a long time, and then flows out to the combustion heat fin tubes 120 via the other connection tube 222 , to accordingly perform a heat exchange through the high-temperature exhaust gas and the combustion heat.
- an exhaust gas tower 230 forming the latent heat exchanger 1 generally is provided on the upper ends of the latent heat exchanger body 200 and the lateral plates 220 .
- the exhaust gas tower 230 includes an exhaust gas outlet 231 for discharging an exhaust gas on the upper end thereof.
- a guide plate 240 which guides a flow of the exhaust gas so that an exhaust gas can flow over the whole of the plurality of latent heat fin tubes 210 and firmly fixes the latent heat fin tubes 210 is provided between the latent heat fin tubes 210 and the exhaust gas tower 230 .
- the guide plate 240 is formed to have the same inclination as those of the latent heat fin tubes 210 which are slantedly installed in the latent heat exchanger body 200 .
- a packing 170 made of rubber is provided between the inner plate members 110 with which the combustion heat fin tubes 120 are fitted and the duct 300 , to thereby enable the upper sides of the inner plate members 110 and the lower side of the duct 300 to be connected with each other stably while maintaining a sealing capability.
- water in the combustion heat fin tubes 120 is primarily heated by the combustion heat of the burner 10 , and then the latent heat fin tubes 210 are heated by gas having passed through the duct 300 , as shown in FIG. 12 , to thereby provide a heat exchanger for a condensing gas boiler.
- FIG. 13 is a perspective view showing an example of a non-condensing heat exchanger to which the common heat exchanger shown in FIG. 7 according to the present invention is applied.
- FIG. 14 is an exploded perspective view showing the non-condensing heat exchanger shown in FIG. 13 according to the present invention.
- FIG. 15 is a cross-sectional view showing the non-condensing heat exchanger shown in FIG. 13 according to the present invention.
- a non-condensing boiler shown in FIG. 13 has an auxiliary heat exchanger having a relatively small capacity installed in a common heat exchanger according to the present invention.
- the auxiliary heat exchanger which absorbs only combustion heat can suppl ement an output capacity which is insufficient with only a common heat exchanger.
- an auxiliary heat exchanger 3 which absorbs only combustion heat is mounted on the common heat exchanger 1 according to the present invention, to thereby form a non-condensing heat exchanger.
- the non-condensing heat exchanger has a structure in which a cover-shaped exhaust gas duct 160 is installed on the inner plate members 110 in the common heat exchanger 1 , and auxiliary combustion heat fin tubes 310 are installed between the exhaust gas duct 160 and the combustion heat fin tubes 120 on the upper end surfaces of the inner plate members 110 .
- An exhaust gas outlet 161 is provided in the exhaust gas duct 160 formed on the upper portion of the auxiliary heat exchanger 3 .
- a plurality of inner plate member grooves 111 are provided on both sides of the upper ends of inner plate members 110 .
- a plurality of combustion heat fin tubes 120 which heat water through heat exchanging with combustion heat are mounted into the inner plate member grooves 111 which are then tightly assembled with a separate lateral plate 180 .
- combustion heat fin tubes 120 are preferably made of a form rolling fin structure where fins are form rolled on a tube made of copper, respectively.
- the fins on the combustion heat fin tubes 120 can be combined on the outer circumferential surface of the tubes through a well-known brazing weld.
- the auxiliary combustion heat fin tubes 310 installed on the upper portion of the combustion heat fin tubes 120 are mounted between the upper end of the lateral plate 180 and exhaust gas duct grooves 162 in the exhaust gas duct 160 .
- auxiliary combustion heat fin tubes 310 are preferably made of a form rolling fin structure where fins are form rolled on a tube made of aluminum which is cheap and has a good corrosion-resistant capability in comparison with copper, respectively.
- the fins provided on the outer circumferential surfaces of the tubes can be also formed of a well-known general fin structure, not a form rolling fin structure.
- auxiliary heat exchange is performed in the auxiliary combustion heat fin tubes 310 , they do not need to be made of fin tubes of copper which is expensive.
- the combustion heat fin tubes 120 whose exhaust gas temperature is high are made of copper in order to prevent damage due to high temperature, while the auxiliary combustion heat fin tubes 310 whose exhaust gas temperature is relatively low are made of aluminum. In this manner, the heat exchanger according to the present invention can be manufactured at low cost.
- the auxiliary combustion heat fin tubes 310 are connected with each other by means of U-shaped tubes 311 , respectively, according to a conventional method.
- the auxiliary combustion heat fin tubes 310 and the combustion heat fin tubes 120 are connected with each other via connection tubes 312 , respectively.
- the lateral plate 180 combined with both sides of the upper portion of the inner plate members 110 is separately manufactured from the inner plate members 110 and plays a role of fixing and supporting the combustion heat fin tubes 120 and the auxiliary combustion heat fin tubes 310 together with the inner plate members 110 and the exhaust gas duct 160 .
- the combustion heat fin tubes 120 and the auxiliary combustion heat fin tubes 310 are assembled with each other between the common heat exchanger 1 and the auxiliary heat exchanger 3 , by means of the lateral plate 180 , the number of connection portions is reduced to thereby reliably maintain air-tightness of the heat exchanger.
- a packing 170 is provided between the inner plate members 110 where the combustion heat fin tubes 120 are fitted and the auxiliary heat exchanger 3 . Accordingly, the upper sides of the inner plate members 110 and the lower sides of the auxiliary heat exchanger 3 can be stably combined with each other while maintaining air-tightness.
- the number of the auxiliary combustion heat fin tubes 310 is generally smaller than that of the combustion heat fin tubes 120 .
- the exhaust gas duct 160 has a structure that the volume of the duct is reduced upwards. As a result, the number of the auxiliary combustion heat fin tubes 310 can be reduced and simultaneously a flow of the exhaust gas can be stably guided in the direction of the exhaust gas outlet 161 .
- the inner plate members 110 , the exhaust gas duct 160 , the lateral plate 180 , the combustion heat fin tubes 120 , and the auxiliary combustion heat fin tubes 310 are sequentially combined one after another and then the auxiliary combustion heat fin tubes 310 and the combustion heat fin tubes 120 are connected with each other via the connection tubes 312 , respectively. Accordingly, the non-condensing heat exchanger can be simply assembled.
- the water which is primarily heated by the combustion heat fin tubes 120 flows toward the auxiliary combustion heat fin tubes 310 via the connection tubes 312 , and then is secondarily heated by the exhaust gas.
- the water in the lower-side combustion heat fin tubes 120 is heated by combustion heat of the burner 10 via the heat exchanger to which the common heat exchanger in the gas boiler according to the present invention is applied, and then the water in the upper-side auxiliary combustion heat fin tubes 310 is heated.
- combustion heat fin tubes 120 play a role of a main heat exchanger
- auxiliary combustion heat fin tubes 310 play a role of an auxiliary heat exchanger.
- the non-condensing gas boiler absorbs only combustion heat in the combustion chamber in order to perform heat exchange.
- the common heat exchanger of the gas boiler according to the present invention can be applied to a downstream combustion gas boiler having a burner which is provided in the upper portion thereof.
- the common heat exchanger according to the present invention can be applied to a general gas boiler in which a gas boiler and a conventional heat exchanger are integrated. That is, the integrated heat exchanger is divided into several heat exchangers and then part of the divided heat exchangers are made of conventional copper heat exchangers and the rest of the divided heat exchangers are made of corrosion-resistant heat exchangers, in which condensed water basin is installed.
- a heat exchanger of a form rolling fin structure according to the present invention can be made by brazing fins on a copper tube, a double tube of a copper tube and an aluminum tube, or a stainless steel tube.
- a heat exchanger structure can be easily varied and modified.
Abstract
A heat exchanger for common use for both a boiler and a hot water supply is provided, which includes a plurality of inner plate members (110) having inner plate member grooves formed on either side of the upper end thereof, and a burner provided on the bottom surface thereof, to thereby perform a combustion chamber function; combustion heat fin tubes (120) formed of a number of heat exchange tubes on the outer circumferential surface of which transfer heat fins are formed; an insulation member (130) which is installed in an identical area along the inner walls of the inner plate members; and an independent heat exchanger body which is connected with the combustion heat fin tubes. Thus, a heat exchanger for a condensing or noncondensing gas boiler can be manufactured at low cost, through the common heat exchanger Further, two kinds of heat exchangers can be manufactured through a single common heat exchanger to thereby make an additional process unnecessary.
Description
- The present invention relates to a heat exchanger for common use for a boiler and a hot water supply, and more particularly to, a heat exchanger for common use for a boiler and a hot water supply in which a combustion chamber and a common heat exchanger can be used in common when manufacturing a non-condensing, semi-condensing and condensing boiler, to thereby make it possible to manufacture the non-condensing, semi-condensing and condensing boiler.
- A boiler for use in general homes and buildings is used for heating rooms and supplying hot water, which is divided into a fuel oil boiler and a fuel gas boiler, according to a type of fuel used.
- In the case of a gas fuel boiler, liquified petroleum gas (LPG) has been being used, but liquified natural gas (LNG) is being used since LNG contains few sulfuric component in comparison with LPG, to thus minimize an air pollution.
- In addition, a gas boiler can be divided into a variety of types according to a control method or a sealing state thereof. Further, a gas boiler can be classified into a condensing gas boiler and a non-condensing gas boiler according to a method of re-collecting heat sources heating water.
- As shown in
FIGS. 1 and 2 , a heat exchanger for use in a condensing boiler includes acombustion heat exchanger 29 which heats water directly using heat from aburner 10, and alatent heat exchanger 28 which heats water indirectly using latent heat of an exhaust gas passing through thecombustion heat exchanger 29. - In the case of the heat exchanger of the condensing boiler, water flowing through combustion
heat fin tubes 29′ is primarily heated by a combustion function of aburner 10, and an exhaust gas passing through an exhaust gas inlet 31 secondarily heats water inlatent fin tubes 28′. - Here, a condensed
water basin 32 which externally guides condensed water due to an exhaust gas is provided between thecombustion heat exchanger 29 and thelatent heat exchanger 28. - Further, a
guide plate 33 slants at the same angle as the condensedwater basin 32. An exhaustgas discharge portion 36 is formed in opposition to theexhaust gas inlet 31. - Thus, the exhaust gas passing through the
combustion heat exchanger 29 flows in via one side of thelatent heat exchanger 28 by the condensedwater basin 32, passes throughlatent fin tubes 28′, and is discharged via anexhaust gas outlet 37 in an exhaustgas discharge portion 36. Accordingly, heat can be transferred toward thelatent heat exchanger 28 for a sufficient time. - Meanwhile, as shown in
FIGS. 3 and 4 , in the case of a heat exchanger for use in a non-condensing boiler which is referred to as a non-condensing heat exchanger, aheat exchanger 30 is directly heated by combustion of aburner 10, and an exhaust gas is discharged via anexhaust gas outlet 37. - Technical Problem
- Here, the
non-condensing heat exchanger 30 is generally made of a copper material whose heat transfer rate is excellent. Since a high heat efficiency is pursued due to an energy policy and a control technology is developed, the non-condensing heat exchanger is designed to suppress condensation at maximum. However, a condensation phenomenon cannot be prevented from occurring partially or temporarily, which causes the heat exchanger to be corroded. - As described above, the heat exchanger of the condensing boiler shown in
FIGS. 1 and 2 differs in its construction from that of the non-condensing boiler shown inFIGS. 3 and 4 , due to respectively different heat absorption methods. - Thus, since respectively different structural heat exchangers should be manufactured in order to make a condensing boiler and a non-condensing boiler, it is difficult to share components of the heat exchangers. As a result, the material cost for the heat exchanger increases and the number of processes thereof increases as well.
- Technical Solution
- To solve the above problems, it is an object of the present invention to provide a heat exchanger for common use for a boiler and a hot water supply which enables a manufacturer to selectively manufacture a condensing boiler, a semi-condensing boiler and a non-condensing boiler at low cost, to thus save a development period, a manufacturing cost, and a management cost after mass-production, relatively in comparison with those of a conventional heat exchanger, in which a latent heat exchanger or a non-condensing heat exchanger (called an auxiliary heat exchanger) is combined on the upper end of the common heat exchanger which can be commonly used for manufacturing the condensing boiler, the semi-condensing boiler, and the non-condensing boiler.
- It is another object of the present invention to provide a heat exchanger for common use for a boiler and a hot water supply which is made of a corrosion-resistant material and a hybrid metal corrosion-preventive structure and includes a condensed water basin as necessary.
- It is still another object of the present invention to provide a heat exchanger for common use for a boiler and a hot water supply which has a structure of making an exhaust gas smoothly flow in which a latent heat exchanger is combined on the upper portion of the common heat exchanger when a condensing boiler is manufactured using the common heat exchanger and a duct is installed between the common heat exchanger and the condensing boiler, and which has a structure of regulating a flow of gas in which a non-condensing heat exchanger and a latent heat exchanger which are combined on the upper portion of the common heat exchanger have an identical same gas flow direction each other.
- Advantageous Effects
- As described above, a heat exchanger for a condensing and non-condensing gas boiler can be manufactured with a common heat exchanger according to the present invention. Accordingly, the heat exchanger for a gas boiler can be manufactured at low cost. Also, since two kinds of heat exchangers can be manufactured with a common heat exchanger, an additional process is not necessary.
- In particular, since it is possible to share the common heat exchanger as a common component, condensing, semi-condensing, and non-condensing gas boilers can be selectively manufactured. As a result, a development period of a product, a manufacturing cost therefor, and a management cost therefor after mass-production can be saved relatively in comparison with those of a conventional heat exchanger.
- In addition, a non-condensing boiler adopting a common heat exchanger according to the present invention has a high efficiency.
- The above and other objects and advantages of the present invention will become more apparent by describing the preferred embodiments thereof in detail with reference to the accompanying drawings in which:
-
FIGS. 1 and 2 are a perspective view and a cross-sectional view showing a conventional condensing heat exchanger, respectively; -
FIGS. 3 and 4 are a perspective view and a cross-sectional view showing a conventional non-condensing heat exchanger, respectively; -
FIG. 5 is a perspective view showing a common heat exchanger according to the present invention; -
FIG. 6 is an exploded perspective view showing a common heat exchanger according to the present invention; -
FIG. 7 is an exploded perspective view showing a common heat exchanger ofFIG. 6 which additionally has an outer cover according to another embodiment of the present invention; -
FIG. 8 is a perspective view showing an example of a condensing heat exchanger to which the common heat exchanger shown inFIG. 7 according to the present invention is applied; -
FIG. 9 is an exploded perspective view showing the condensing heat exchanger shown inFIG. 8 according to the present invention; -
FIG. 10 is an exploded perspective view showing only a latent heat exchanger separated from the condensing heat exchanger shown inFIG. 8 according to the present invention; -
FIG. 11 is an exploded perspective view showing the latent heat exchanger shown inFIG. 10 according to the present invention; -
FIG. 12 is a cross-sectional view showing the condensing heat exchanger shown inFIG. 8 according to the present invention; -
FIG. 13 is a perspective view showing an example of a non-condensing heat exchanger to which the common heat exchanger shown inFIG. 7 according to the present invention is applied; -
FIG. 14 is an exploded perspective view showing the non-condensing heat exchanger shown inFIG. 13 according to the present invention; and -
FIG. 15 is a cross-sectional view showing the non-condensing heat exchanger shown inFIG. 13 according to the present invention. - To accomplish the above object of the present invention, according to the present invention, there is provided a heat exchanger for common use for a boiler and a hot water supply, the common heat exchanger comprising: a plurality of inner plate members having inner plate member grooves formed on either side of the upper end thereof, and a burner provided on the bottom surface thereof, to thereby perform a combustion chamber function; combustion heat fin tubes formed of a number of heat exchange tubes on the outer circumferential surface of which transfer heat fins are formed so that a heat exchange is performed by hot water flows in the transfer heat fins in which the combustion heat fin tubes are mounted into the inner plate member grooves provided in the inner plate member; a heat insulation member which is installed in an identical area along the inner walls of the inner plate members; and an independent heat exchanger body which is connected with the combustion heat fin tubes so that hot water can flow and is formed of a plurality of water tubes wound on the outer circumferential surfaces of the inner plate members.
- Preferably, an outer cover is further installed at the outermost portion of the heat exchanger body so as to surround the plurality of water tubes wound on the outer circumferential surfaces of the inner plate members.
- In addition, a structure of a condensing boiler is formed in the case that a latent heat exchanger having latent fin tubes absorbing latent heat in the latent heat exchanger body is independently combined on the upper portion of the heat exchanger body.
- Here, it is preferable that a duct is formed between the heat exchanger body and the latent heat exchanger to thus make an exhaust gas smoothly flow.
- Meanwhile, a structure of a non-condensing boiler having a relatively high output capacity is formed in the case that an auxiliary heat exchanger absorbing only combustion heat is independently combined on the upper portion of the heat exchanger body.
- Mode for the Invention
- Hereinbelow, a common heat exchanger for common use for a non-condensing boiler and a condensing boiler according to the present invention will be in detail described with reference to the accompanying drawings.
-
FIG. 5 is a perspective view showing a common heat exchanger according to the present invention.FIG. 6 is an exploded perspective view showing a common heat exchanger according to the present invention.FIG. 7 is an exploded perspective view showing a common heat exchanger ofFIG. 6 which additionally has an outer cover according to another embodiment of the present invention. - As shown in
FIGS. 5 and 6 , acommon heat exchanger 1 according to the present invention largely includes a plurality ofinner plate members 110, combustionheat fin tubes 120, aheat insulation member 130, andwater tubes 140, all of which are formed as an independentheat exchanger body 100. - Here, the
inner plate members 110 perform a combustion chamber function as in a conventional heat exchanger. - That is, the
inner plate members 110 has a rectangular box structure having a burner (not shown) which burns air and gas inhaled by operation of a blower (not shown) provided on the bottom surface thereof, and a plurality of innerplate member grooves 111 into which the plurality of combustionheat fin tubes 120 are assembled on both sides of the upper end thereof, to thereby perform a combustion chamber function in a boiler. - Here, windows 112 can be provided on the
inner plate members 110 so that a user can monitor a burning flame from the outside of the heat exchanger. - The combustion
heat fin tubes 120 are formed of a number of heat exchange tubes on the outer circumferential surface of which transfer heat fins are formed so that a heat exchange is performed by hot water flows in the transfer heat fins. It is preferable that the combustionheat fin tubes 120 are made of a copper material whose heat transfer rate is excellent as in a conventional heat exchanger in a conventional gas boiler, and it is manufactured to have a structure of contacting combustion heat due to combustion of the burner as a number of times as possible. - One end of the combustion
heat fin tubes 120 is connected with a hot water supply tube (not shown) of a gas boiler and the other end thereof is connected with a fin tube of a latent heat exchanger 53 or a non-condensing heat exchanger to be described later. - The combustion
heat fin tubes 120 are connected in zigzag form viaU-shaped tubes 121. Accordingly, the plurality of the combustionheat fin tubes 120 form a single long tube so that water flowing therein is heat-exchanged with the combustion heat, to thus perform a combustion chamber function. - Here, the
U-shaped tubes 121 are made of the same material as that of the combustionheat fin tubes 120 in order to prevent a corrosion occurring in hybrid metal between theU-shaped tubes 121 and the combustionheat fin tubes 120. - Thus, the hot water which flows in via one end of the combustion
heat fin tubes 120 from the hot water supply tube flows along the respective combustionheat fin tubes 120 via theU-shaped tubes 121 so as to be heat-exchanged with the combustion heat from the burner for a long time. - As shown in
FIG. 6 , since theinner plate members 110 perform a combustion chamber function, it is preferable that aheat insulation member 130 is installed in theinner plate members 110 in order to isolate combustion heat from being discharged out via theinner plate members 110 in the case that combustion occurs in the inside of theinner plate members 110. - Here, since it is preferable that the
insulation material 130 is provided over the whole inner walls of theinner plate members 110, theinsulation member 130 is installed in the inner walls of theinner plate members 110 in the same area and substantially same structure as those of theinner plate members 110. - In addition, a plurality of
water tubes 140 connected with the combustionheat fin tubes 120 are wound on the outer circumferential surfaces of theinner plate members 110, in order to absorb the combustion heat discharged from theinner plate members 110 as much as possible, to thus enhance a heat efficiency. - As shown in
FIG. 7 , according to another aspect of the present invention, anouter cover 150 is further installed at the outermost portion of the heat exchanger body so as to surround the plurality ofwater tubes 140 wound on the outer circumferential surfaces of theinner plate members 110. - It is preferable that the
outer cover 150 has a structure of the same shape as that of theinner plate members 110, like theinsulation member 130. - In particular, the
outer cover 150 can absorb heat discharged from the combustion chamber via theinner plate members 110 to a degree using a material of metal, and isolate the outer portions of theinner plate members 110 from users to thereby protect them safely from contacting the hot portions. Further, theouter cover 150 does not expose thewater tubes 140 wound on the outer walls of theinner plate members 110, to thereby play a role of making an external countenance look good. - That is, although heat radiated from the
inner plate members 110 via theinsulation member 130 has been prevented at maximum, high-temperature combustion heat can be discharged out via theinner plate members 110 to a degree. Here, thewater tubes 140 wound on the outer walls of theinner plate members 110 can absorb the high-temperature combustion heat to thus primarily heat-exchange with the combustion heat, and simultaneously isolate heat discharged from theouter cover 150 to further prevent a thermal loss. - In particular, since the
outer cover 150 absorbs a relatively small amount of heat, the surface temperature of theouter cover 150 is remarkably lowered. Although users get in touch with theouter cover 150, a danger of a burn can be reduced. - In the case that the
common heat exchanger 1 is manufactured, a burner is provided on the bottom surface of theinner plate members 110, and then the combustionheat fin tubes 120 are assembled with a plurality of innerplate member grooves 111 provided on either side of the upper end of theinner plate members 110. Then, the plurality of combustionheat fin tubes 120 are connected viaU-shaped tubes 121 excluding one end and the other end of the plurality of the combustionheat fin tubes 120. - At the state where the
common heat exchanger 1 according to the present invention has been provided as described above, a condensing gas boiler or non-condensing boiler can be manufactured as desired. - Hereinbelow, a condensing boiler to which the
common heat exchanger 1 according to the present invention is applied will be described with reference toFIGS. 8 through 12 . -
FIG. 8 is a perspective view showing an example of a condensing heat exchanger to which the common heat exchanger shown inFIG. 7 according to the present invention is applied.FIG. 9 is an exploded perspective view showing the condensing heat exchanger shown inFIG. 8 according to the present invention.FIG. 10 is an exploded perspective view showing only a latent heat exchanger separated from the condensing heat exchanger shown inFIG. 8 according to the present invention.FIG. 11 is an exploded perspective view showing the latent heat exchanger shown inFIG. 10 according to the present invention.FIG. 12 is a cross-sectional view showing the condensing heat exchanger shown inFIG. 8 according to the present invention. - As shown in
FIGS. 8 through 12 , alatent heat exchanger 2 which can absorb latent heat from an exhaust gas is independently combined on the upper portion of acommon heat exchanger 1 according to the present invention, to thus form a condensing heat exchanger. - Here, a
separate duct 300 is formed between thecommon heat exchanger 1 and thelatent heat exchanger 2 to thus make an exhaust gas smoothly flow in the case that thelatent heat exchanger 2 is combined with thecommon heat exchanger 1. - That is, the
duct 300 is combined on the upper portion of the combustionheat fin tubes 120 in thecommon heat exchanger 1. - Here, as shown in more detail in
FIG. 11 , theduct 300 includes anexhaust gas outlet 303 through which an exhaust gas having passed through the combustionheat fin tubes 120 is discharged and which is provided on part of theupper surface 301 thereof, and aninclined surface 302 provided in opposition to theexhaust gas outlet 303. - The latent
heat exchanger body 200 of thelatent heat exchanger 2 is combined on theduct 300. - The bottom surface of the latent
heat exchanger body 200 has a structure corresponding to theupper surface 301 and theinclined surface 302 of theduct 300, and has anexhaust gas inlet 201 in correspondence to the same position as that of theexhaust gas outlet 303. - A
condensed water outlet 202 through which condensed water formed due to the exhaust gas is discharged is provided on the lowermost end of the bottom surface of the latentheat exchanger body 200. - A plurality of latent
heat fin tubes 210 through which hot water flows are provided in the latentheat exchanger body 200. - The latent
heat fin tubes 210 perform a heat exchange like the combustionheat fin tubes 120 in thecommon heat exchanger 1, and are preferably made of a corrosion-resistant material such as aluminum and stainless steel, to thereby prevent corrosion due to condensation. More preferably, the latentheat fin tubes 210 are made of a plurality of tubes each having a double structure, in which a copper tube is inserted into the inside of an aluminum tube whose cost is lower than that of the cooper tube, differently from the combustionheat fin tubes 120 which are made of copper tubes. - Here, the latent
heat fin tubes 210 are fitted with separatelateral plates 220 which cover the lateral surfaces of the latentheat exchanger body 200, and are connected with each other byU-shaped tubes 221, to thereby form a single tube through which hot water can flow. - The latent
heat fin tubes 210 are connected with the combustionheat fin tubes 120 and a hot water inlet tube (not shown) both which are positioned below the latentheat fin tubes 210, throughconnection tubes - As a result, as shown in
FIG. 11 , hot water having flown in from theconnection tube 223 through the unshown hot water inlet tube flows through the plurality of latentheat fin tubes 210 for a long time, and then flows out to the combustionheat fin tubes 120 via theother connection tube 222, to accordingly perform a heat exchange through the high-temperature exhaust gas and the combustion heat. - Meanwhile, an
exhaust gas tower 230 forming thelatent heat exchanger 1 generally is provided on the upper ends of the latentheat exchanger body 200 and thelateral plates 220. - The
exhaust gas tower 230 includes anexhaust gas outlet 231 for discharging an exhaust gas on the upper end thereof. - A
guide plate 240 which guides a flow of the exhaust gas so that an exhaust gas can flow over the whole of the plurality of latentheat fin tubes 210 and firmly fixes the latentheat fin tubes 210 is provided between the latentheat fin tubes 210 and theexhaust gas tower 230. - It is preferable that the
guide plate 240 is formed to have the same inclination as those of the latentheat fin tubes 210 which are slantedly installed in the latentheat exchanger body 200. - As shown in
FIG. 9 , a packing 170 made of rubber is provided between theinner plate members 110 with which the combustionheat fin tubes 120 are fitted and theduct 300, to thereby enable the upper sides of theinner plate members 110 and the lower side of theduct 300 to be connected with each other stably while maintaining a sealing capability. - In the case of the condensing heat exchanger to which the common heat exchanger according to the present invention is applied as described above, water in the combustion
heat fin tubes 120 is primarily heated by the combustion heat of theburner 10, and then the latentheat fin tubes 210 are heated by gas having passed through theduct 300, as shown inFIG. 12 , to thereby provide a heat exchanger for a condensing gas boiler. - Hereinbelow, a non-condensing gas boiler to which the
common heat exchanger 1 according to the present invention is applied will be described with reference toFIGS. 13 through 15 . -
FIG. 13 is a perspective view showing an example of a non-condensing heat exchanger to which the common heat exchanger shown inFIG. 7 according to the present invention is applied.FIG. 14 is an exploded perspective view showing the non-condensing heat exchanger shown inFIG. 13 according to the present invention.FIG. 15 is a cross-sectional view showing the non-condensing heat exchanger shown inFIG. 13 according to the present invention. - A non-condensing boiler shown in
FIG. 13 has an auxiliary heat exchanger having a relatively small capacity installed in a common heat exchanger according to the present invention. The auxiliary heat exchanger which absorbs only combustion heat can suppl ement an output capacity which is insufficient with only a common heat exchanger. - That is, as shown in FIGS. 13 to 15, an
auxiliary heat exchanger 3 which absorbs only combustion heat is mounted on thecommon heat exchanger 1 according to the present invention, to thereby form a non-condensing heat exchanger. The non-condensing heat exchanger has a structure in which a cover-shapedexhaust gas duct 160 is installed on theinner plate members 110 in thecommon heat exchanger 1, and auxiliary combustionheat fin tubes 310 are installed between theexhaust gas duct 160 and the combustionheat fin tubes 120 on the upper end surfaces of theinner plate members 110. - An
exhaust gas outlet 161 is provided in theexhaust gas duct 160 formed on the upper portion of theauxiliary heat exchanger 3. - That is, as shown in
FIG. 14 , a plurality of innerplate member grooves 111 are provided on both sides of the upper ends ofinner plate members 110. A plurality of combustionheat fin tubes 120 which heat water through heat exchanging with combustion heat are mounted into the innerplate member grooves 111 which are then tightly assembled with a separatelateral plate 180. - Here, the combustion
heat fin tubes 120 are preferably made of a form rolling fin structure where fins are form rolled on a tube made of copper, respectively. - Of course, the fins on the combustion
heat fin tubes 120 can be combined on the outer circumferential surface of the tubes through a well-known brazing weld. - The auxiliary combustion
heat fin tubes 310 installed on the upper portion of the combustionheat fin tubes 120 are mounted between the upper end of thelateral plate 180 and exhaustgas duct grooves 162 in theexhaust gas duct 160. - Here, the auxiliary combustion
heat fin tubes 310 are preferably made of a form rolling fin structure where fins are form rolled on a tube made of aluminum which is cheap and has a good corrosion-resistant capability in comparison with copper, respectively. - Of course, in the case of the auxiliary combustion
heat fin tubes 310, the fins provided on the outer circumferential surfaces of the tubes can be also formed of a well-known general fin structure, not a form rolling fin structure. - Since an auxiliary heat exchange is performed in the auxiliary combustion
heat fin tubes 310, they do not need to be made of fin tubes of copper which is expensive. - That is, the combustion
heat fin tubes 120 whose exhaust gas temperature is high are made of copper in order to prevent damage due to high temperature, while the auxiliary combustionheat fin tubes 310 whose exhaust gas temperature is relatively low are made of aluminum. In this manner, the heat exchanger according to the present invention can be manufactured at low cost. - The auxiliary combustion
heat fin tubes 310 are connected with each other by means ofU-shaped tubes 311, respectively, according to a conventional method. - The auxiliary combustion
heat fin tubes 310 and the combustionheat fin tubes 120 are connected with each other viaconnection tubes 312, respectively. - In particular, the
lateral plate 180 combined with both sides of the upper portion of theinner plate members 110 is separately manufactured from theinner plate members 110 and plays a role of fixing and supporting the combustionheat fin tubes 120 and the auxiliary combustionheat fin tubes 310 together with theinner plate members 110 and theexhaust gas duct 160. - As described above, since the combustion
heat fin tubes 120 and the auxiliary combustionheat fin tubes 310 are assembled with each other between thecommon heat exchanger 1 and theauxiliary heat exchanger 3, by means of thelateral plate 180, the number of connection portions is reduced to thereby reliably maintain air-tightness of the heat exchanger. - In addition, as shown in
FIG. 14 , a packing 170 is provided between theinner plate members 110 where the combustionheat fin tubes 120 are fitted and theauxiliary heat exchanger 3. Accordingly, the upper sides of theinner plate members 110 and the lower sides of theauxiliary heat exchanger 3 can be stably combined with each other while maintaining air-tightness. - Here, the number of the auxiliary combustion
heat fin tubes 310 is generally smaller than that of the combustionheat fin tubes 120. - As shown in
FIGS. 13 through 15 , theexhaust gas duct 160 has a structure that the volume of the duct is reduced upwards. As a result, the number of the auxiliary combustionheat fin tubes 310 can be reduced and simultaneously a flow of the exhaust gas can be stably guided in the direction of theexhaust gas outlet 161. - An assembly process and combustion process of the non-condensing heat exchanger according to the present invention having the above-described structure will be described below in brief.
- First, the
inner plate members 110, theexhaust gas duct 160, thelateral plate 180, the combustionheat fin tubes 120, and the auxiliary combustionheat fin tubes 310 are sequentially combined one after another and then the auxiliary combustionheat fin tubes 310 and the combustionheat fin tubes 120 are connected with each other via theconnection tubes 312, respectively. Accordingly, the non-condensing heat exchanger can be simply assembled. - As shown in
FIG. 15 , the water which is primarily heated by the combustionheat fin tubes 120 flows toward the auxiliary combustionheat fin tubes 310 via theconnection tubes 312, and then is secondarily heated by the exhaust gas. - As described above, in the case of the heat exchanger of the non-condensing gas boiler, the water in the lower-side combustion
heat fin tubes 120 is heated by combustion heat of theburner 10 via the heat exchanger to which the common heat exchanger in the gas boiler according to the present invention is applied, and then the water in the upper-side auxiliary combustionheat fin tubes 310 is heated. - In particular, the combustion
heat fin tubes 120 play a role of a main heat exchanger, and the auxiliary combustionheat fin tubes 310 play a role of an auxiliary heat exchanger. As a result, the non-condensing gas boiler absorbs only combustion heat in the combustion chamber in order to perform heat exchange. - Meanwhile, the common heat exchanger of the gas boiler according to the present invention can be applied to a downstream combustion gas boiler having a burner which is provided in the upper portion thereof.
- In addition, the common heat exchanger according to the present invention can be applied to a general gas boiler in which a gas boiler and a conventional heat exchanger are integrated. That is, the integrated heat exchanger is divided into several heat exchangers and then part of the divided heat exchangers are made of conventional copper heat exchangers and the rest of the divided heat exchangers are made of corrosion-resistant heat exchangers, in which condensed water basin is installed.
- Also, a heat exchanger of a form rolling fin structure according to the present invention can be made by brazing fins on a copper tube, a double tube of a copper tube and an aluminum tube, or a stainless steel tube. Here, it is apparent to one who has an ordinary skill in the art that a heat exchanger structure can be easily varied and modified.
Claims (5)
1. A heat exchanger for common use for a boiler and a hot water supply, the common heat exchanger comprising:
a plurality of inner plate members having inner plate member grooves formed on either side of the upper end thereof, and a burner provided on the bottom surface thereof, to thereby perform a combustion chamber function;
combustion heat fin tubes formed of a number of heat exchange tubes on the outer circumferential surface of which transfer heat fins are formed so that a heat exchange is performed by hot water flows in the transfer heat fins in which the combustion heat fin tubes are mounted into the inner plate member grooves provided in the inner plate members;
an insulation member which is installed in an identical area along the inner walls of the inner plate members; and
an independent heat exchanger body which is connected with the combustion heat fin tubes so that hot water can flow and is formed of a plurality of water tubes wound on the outer circumferential surfaces of the inner plate members.
2. The common heat exchanger according to claim 1 , further comprising an outer cover installed at the outermost portion of the heat exchanger body so as to surround the plurality of water tubes wound on the outer circumferential surfaces of the inner plate members.
3. The common heat exchanger according to claim 1 or 2 , wherein a structure of a condensing boiler is formed in the case that a latent heat exchanger having latent fin tubes absorbing latent heat in the latent heat exchanger body is independently combined on the upper portion of the heat exchanger body.
4. The common heat exchanger according to claim 3 , wherein a duct is formed between the heat exchanger body and the latent heat exchanger to thus make an exhaust gas smoothly flow.
5. The common heat exchanger according to claim 1 or 2 , wherein a structure of a non-condensing boiler having a relatively high output capacity is formed in the case that an auxiliary heat exchanger absorbing only combustion heat is independently combined on the upper portion of the heat exchanger body.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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KR10-2004-0081928 | 2004-10-13 | ||
KR1020040081928A KR100570291B1 (en) | 2004-10-13 | 2004-10-13 | Basic heat exchanger of boiler |
PCT/KR2005/000805 WO2006041244A1 (en) | 2004-10-13 | 2005-03-19 | Heat exchanger for common use for boiler and hot water supply |
Publications (1)
Publication Number | Publication Date |
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US20070204980A1 true US20070204980A1 (en) | 2007-09-06 |
Family
ID=36148520
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/592,651 Abandoned US20070204980A1 (en) | 2004-10-13 | 2005-03-19 | Heat Exchanger for Common Use for Boiler and Hot Water Supply |
Country Status (7)
Country | Link |
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US (1) | US20070204980A1 (en) |
EP (1) | EP1800068B1 (en) |
JP (1) | JP2007517180A (en) |
KR (1) | KR100570291B1 (en) |
CN (1) | CN100451526C (en) |
PL (1) | PL1800068T3 (en) |
WO (1) | WO2006041244A1 (en) |
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Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2270863A (en) * | 1938-10-24 | 1942-01-27 | Universal Oil Prod Co | Heating of fluids |
US2291023A (en) * | 1940-02-02 | 1942-07-28 | Burkay Company | Double temperature water heating unit |
US3368547A (en) * | 1965-10-23 | 1968-02-13 | William A. Hale | Finned-tube heat exchanger |
US4158345A (en) * | 1977-03-17 | 1979-06-19 | Fer Fabbrica Europea Riscaldamento S.P.A. | Boiler for liquid and/or gaseous fuels |
US4360003A (en) * | 1980-09-25 | 1982-11-23 | Hardy Willie J | Wood burning hot water heater |
US4401100A (en) * | 1981-05-04 | 1983-08-30 | Slater Harold E | Water heating system |
US4501232A (en) * | 1983-10-03 | 1985-02-26 | Purex Pool Products, Inc. | Pool or spa water heater |
US4905895A (en) * | 1988-03-04 | 1990-03-06 | Webasto Ag Fahrzeugtechnik | Heating device, particularly vehicle auxiliary heating device with a quadrangular heat exchanger |
US4996950A (en) * | 1989-04-07 | 1991-03-05 | Chaffoteaux Et Maury | Double pipes for mixed boilers, to the methods of manufacturing such pipes and to the corresponding boilers |
US6213757B1 (en) * | 1995-06-07 | 2001-04-10 | Quantum Group Inc. | Advanced emissive matrix combustion |
US6435174B1 (en) * | 2000-10-31 | 2002-08-20 | Siout Steam Cleaner Corporation | Fluid heater coil configuration and fabrication method |
US20030062423A1 (en) * | 2001-07-27 | 2003-04-03 | Rixen James M. | Heating system for potable water and relatively small areas |
US20030157448A1 (en) * | 2001-02-21 | 2003-08-21 | Motohiro Suzuki | Catalyst combustion device and method of producing frame body portion thereof |
US6662758B1 (en) * | 2003-03-10 | 2003-12-16 | Kyungdong Boiler Co, Ltd. | Condensing gas boiler for recollecting condensed latent heat using uptrend combustion |
US20040031480A1 (en) * | 2002-05-23 | 2004-02-19 | Jung Yong Hyen | Arrangement structure of heat exchanger in condensing gas boiler |
US20050039703A1 (en) * | 2002-10-02 | 2005-02-24 | Hur Woo Suk | Condensing gas boiler having structure of preventing corrosion caused by using heterogeneous metal |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6048442A (en) | 1983-08-26 | 1985-03-16 | Osaka Gas Co Ltd | Infrared ray heating system exhaust gas down flow type gas water boiler |
JPS61143654A (en) | 1984-12-17 | 1986-07-01 | Toshiba Corp | Ceramic combustor |
GB2244799A (en) * | 1990-05-30 | 1991-12-11 | Welmark Limited | Boiler unit |
CN1140736C (en) * | 2002-04-30 | 2004-03-03 | 西安交通大学 | Plateau type high-efficiency environment-protecting integrated condensation gas boiler and its design method |
CN1497230A (en) * | 2002-10-02 | 2004-05-19 | 株式会社庆东Boiler | Condensation gas boiler with high load premixing combustor |
-
2004
- 2004-10-13 KR KR1020040081928A patent/KR100570291B1/en active IP Right Grant
-
2005
- 2005-03-19 EP EP05789794.4A patent/EP1800068B1/en not_active Not-in-force
- 2005-03-19 CN CNB2005800020907A patent/CN100451526C/en not_active Expired - Fee Related
- 2005-03-19 WO PCT/KR2005/000805 patent/WO2006041244A1/en active Application Filing
- 2005-03-19 PL PL05789794T patent/PL1800068T3/en unknown
- 2005-03-19 JP JP2006545247A patent/JP2007517180A/en active Pending
- 2005-03-19 US US10/592,651 patent/US20070204980A1/en not_active Abandoned
Patent Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2270863A (en) * | 1938-10-24 | 1942-01-27 | Universal Oil Prod Co | Heating of fluids |
US2291023A (en) * | 1940-02-02 | 1942-07-28 | Burkay Company | Double temperature water heating unit |
US3368547A (en) * | 1965-10-23 | 1968-02-13 | William A. Hale | Finned-tube heat exchanger |
US4158345A (en) * | 1977-03-17 | 1979-06-19 | Fer Fabbrica Europea Riscaldamento S.P.A. | Boiler for liquid and/or gaseous fuels |
US4360003A (en) * | 1980-09-25 | 1982-11-23 | Hardy Willie J | Wood burning hot water heater |
US4401100A (en) * | 1981-05-04 | 1983-08-30 | Slater Harold E | Water heating system |
US4501232A (en) * | 1983-10-03 | 1985-02-26 | Purex Pool Products, Inc. | Pool or spa water heater |
US4905895A (en) * | 1988-03-04 | 1990-03-06 | Webasto Ag Fahrzeugtechnik | Heating device, particularly vehicle auxiliary heating device with a quadrangular heat exchanger |
US4996950A (en) * | 1989-04-07 | 1991-03-05 | Chaffoteaux Et Maury | Double pipes for mixed boilers, to the methods of manufacturing such pipes and to the corresponding boilers |
US6213757B1 (en) * | 1995-06-07 | 2001-04-10 | Quantum Group Inc. | Advanced emissive matrix combustion |
US6435174B1 (en) * | 2000-10-31 | 2002-08-20 | Siout Steam Cleaner Corporation | Fluid heater coil configuration and fabrication method |
US20030157448A1 (en) * | 2001-02-21 | 2003-08-21 | Motohiro Suzuki | Catalyst combustion device and method of producing frame body portion thereof |
US20030062423A1 (en) * | 2001-07-27 | 2003-04-03 | Rixen James M. | Heating system for potable water and relatively small areas |
US20040031480A1 (en) * | 2002-05-23 | 2004-02-19 | Jung Yong Hyen | Arrangement structure of heat exchanger in condensing gas boiler |
US20050039703A1 (en) * | 2002-10-02 | 2005-02-24 | Hur Woo Suk | Condensing gas boiler having structure of preventing corrosion caused by using heterogeneous metal |
US6662758B1 (en) * | 2003-03-10 | 2003-12-16 | Kyungdong Boiler Co, Ltd. | Condensing gas boiler for recollecting condensed latent heat using uptrend combustion |
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US20100116226A1 (en) * | 2006-11-08 | 2010-05-13 | Gas Point S.R.L. | Boiler with a combustion head cooling system |
US20140014047A1 (en) * | 2011-01-27 | 2014-01-16 | Industrias Haceb S.A. | Continuous flow water heater that mitigates the effect of altitude |
US20140033994A1 (en) * | 2012-08-01 | 2014-02-06 | A. O. Smith Corporation | Condensing gas water heater |
US20140345542A1 (en) * | 2013-05-24 | 2014-11-27 | Noritz Corporation | Exhaust case and combustion apparatus provided with the same |
US9903610B2 (en) * | 2013-05-24 | 2018-02-27 | Noritz Corporation | Exhaust case and combustion apparatus provided with the same |
DE102013210754A1 (en) * | 2013-06-10 | 2014-12-11 | Robert Bosch Gmbh | Wärmeübertragervorrichtung |
US20150260428A1 (en) * | 2014-03-14 | 2015-09-17 | Joshua Haldeman | Pool water heater |
USD762289S1 (en) * | 2014-07-15 | 2016-07-26 | Dometic Sweden Ab | Heat exchanger |
USD764034S1 (en) * | 2014-07-15 | 2016-08-16 | Dometic Sweden Ab | Heat exchanger |
USD764035S1 (en) * | 2014-07-15 | 2016-08-16 | Dometic Sweden Ab | Heat exchanger |
US20170205113A1 (en) * | 2014-07-25 | 2017-07-20 | Noritz Corporation | Fin-and-tube type heat exchanger and water heater including the same |
AU2015293384B9 (en) * | 2014-07-25 | 2020-03-12 | Noritz Corporation | Fin-and-Tube Type Heat Exchanger and Water Heater Including the Same |
US10094589B2 (en) * | 2014-07-25 | 2018-10-09 | Noritz Corporation | Fin-and-tube type heat exchanger and water heater including the same |
AU2015293384B2 (en) * | 2014-07-25 | 2020-02-06 | Noritz Corporation | Fin-and-Tube Type Heat Exchanger and Water Heater Including the Same |
US20170211845A1 (en) * | 2016-01-25 | 2017-07-27 | Hamilton Engineering, Inc. | Device for dispensing a heated fluid |
US11512871B2 (en) | 2017-09-26 | 2022-11-29 | Noritz Corporation | Water heater |
US11585572B2 (en) | 2018-06-05 | 2023-02-21 | Kyungdong Navien Co., Ltd. | Heat exchanger unit and condensing boiler using the same |
US11835262B2 (en) | 2018-06-05 | 2023-12-05 | Kyungdong Navien Co., Ltd. | Heat exchanger unit |
US11835261B2 (en) | 2018-06-05 | 2023-12-05 | Kyungdong Navien Co., Ltd. | Heat exchanger unit |
US11879666B2 (en) | 2018-06-05 | 2024-01-23 | Kyungdong Navien Co., Ltd. | Heat exchanger unit |
US11448472B2 (en) * | 2018-12-28 | 2022-09-20 | Kyungdong Navien Co., Ltd. | Heat transfer fin and fin-tube type heat exchanger unit using the same |
US20210316531A1 (en) * | 2020-04-09 | 2021-10-14 | Material Sciences Corporation | Multi-layered tube including a non-metallic core layer, and methods thereof |
Also Published As
Publication number | Publication date |
---|---|
WO2006041244A1 (en) | 2006-04-20 |
EP1800068A1 (en) | 2007-06-27 |
EP1800068B1 (en) | 2013-05-15 |
PL1800068T3 (en) | 2013-10-31 |
JP2007517180A (en) | 2007-06-28 |
CN1910408A (en) | 2007-02-07 |
CN100451526C (en) | 2009-01-14 |
KR100570291B1 (en) | 2006-04-11 |
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Legal Events
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Owner name: KYUNGDONG NAVIEN CO., LTD., KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KIM, YOUNG MO;KIM, SUNG GEUN;REEL/FRAME:019109/0359 Effective date: 20070126 |
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