Classifications

• • 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
  • F28F1/02—Tubular elements of cross-section which is non-circular
• • 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
• • 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
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
  • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
  • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
  • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
  • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
  • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
  • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
  • F24H1/43—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • 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
  • F28D7/0041—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 for only one medium being tubes having parts touching each other or tubes assembled in panel form
• • 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
  • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
  • F28D7/163—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
  • F28D7/1638—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing with particular pattern of flow or the heat exchange medium flowing inside the conduits assemblies, e.g. change of flow direction from one conduit assembly to another one
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
  • F28F9/02—Header boxes; End plates
  • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
  • F28F9/0224—Header boxes formed by sealing end plates into covers
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
  • F28F9/02—Header boxes; End plates
  • F28F9/0229—Double end plates; Single end plates with hollow spaces
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
  • F28F9/02—Header boxes; End plates
  • F28F9/04—Arrangements for sealing elements into header boxes or end plates
  • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
  • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
• • 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
  • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators

Definitions

• the present invention relates to a plane type heat exchanger, more particularly a plane type heat exchanger that has a simple structure and can be easily manufactured by substituting a rectangular plane type for a spiral cylindrical type of the structure of a heat exchange pipe according to the related art which is used for a heat exchanger using combustion gas that is heated by a burner and makes laminar flow.
• Background Art a plane type heat exchanger, more particularly a plane type heat exchanger that has a simple structure and can be easily manufactured by substituting a rectangular plane type for a spiral cylindrical type of the structure of a heat exchange pipe according to the related art which is used for a heat exchanger using combustion gas that is heated by a burner and makes laminar flow.
• a pin and tube type that transfers combustion heat of combustion gas to fluid flowing inside a heat exchange pipe through heat transfer pins provided around the surface of the heat exchange pipe is used for heat exchangers that are used in hot- water and heating boilers that use fossil fuels.
• laminar flow type heat exchangers are low in heat transfer efficiency as compared with turbulent flow type heat exchangers; however, the laminar flow type heat exchangers can achieve high heat transfer efficiency even though heat transfer pins are not provided on the surface of a heat exchange pipe until a boundary layer where the flow of combustion gas changes from laminar flow to turbulent flow is formed.
• FIG. 1 is a perspective view of a cylindrical heat exchange pipe that is used in a heat exchanger using laminar flow in the related art and FIG. 2 is a side view of the cylindrical heat exchange pipe shown in FIG. 1.
• a cylindrical heat exchange pipe 10 is a spiral pipe having a flat cross section.
• Low-temperature heating water flows into a heating water inlet 11 formed at one end of the cylindrical heat exchange pipe 10, and combustion heat of combustion gas that is heated by a burner (not shown) is transferred to the heating water flowing through the heat exchange pipe 10 wound spirally, such that high-temperature heating water is discharged through a heating water outlet 12 formed at the other end, for heating or hot water.
• the combustion gas heated by the burner radially flows through a space formed inside the spiral cylindrical heat exchange pipe 10.
• the cylindrical heat exchanger in the related art is large in volume and should be spirally manufactured with the space inside the heat exchange pipe 10 uniformly maintained, such that it has a structural limit in that manufacturing is difficult and only a cylindrical burner can be used, not a plane type burner.
• a plane type heat exchanger having heat exchange pipes, through which heating water flows, and makes heat exchange by contacting with laminar-flow combustion gas includes: a plurality of heat exchange pipes that have a rectangular cross section with a larger width of a side, which contacts with the combustion gas, than the height, and are arranged at regular intervals in parallel with each other; inner plates where both ends of the heat exchange pipes are inserted to be fixed at regular intervals; and outer plates that are communicated with the heat exchange pipes through the inner plates and form spaces covering the outer surfaces of the inner plates.
• Insertion holes having sizes close to the cross-sectional area of the heat exchange pipes are formed, at positions corresponding to the heat exchange pipes, through the inner plates and both ends of the heat exchange pipes are inserted in the insertion holes.
• a sub-plate is provided between the inner plate and the outer plate.
• Brazing is applied to between the inner plate and the sub-plate, the heat exchange pipe and the inner plate, and the heat exchange pipe and the sub-plate. [20] Brazing is applied to portions where both ends of the heat exchange pipe is inserted in the inner plate. [21] The outer plate is divided into a plurality of sections.
• a plane type heat exchanger of the present invention it is easy to flat contact surfaces between heat exchange pipes and combustion gas by manufacturing heat exchange pipes, which are used in the heat exchanger, in a plane multi-layered structure, and it is possible to improve heat transfer efficiency by maintaining regular gaps between the heat exchange pipes.
• FIG. 1 is a perspective view of a cylindrical heat exchange pipe that is used in a heat exchanger using laminar flow in the related art.
• FIG. 2 is a side view of the cylindrical heat exchange pipe shown in FIG. 1.
• FIG. 3 is a cross-sectional plan view showing the structure of a plane type heat exchanger according to an embodiment of the present invention.
• FIG. 4 is an exploded perspective view of FIG. 3.
• FIG. 5 is a cross-sectional plan view showing the structure of a plane type heat exchanger according to another embodiment of the present invention.
• FIG. 6 is an exploded perspective view of FIG. 5.
• FIG. 3 is a cross-sectional plan view showing the structure of a plane type heat exchanger according to an embodiment of the present invention and FIG. 4 is an exploded perspective view of FIG. 3.
• a heat exchanger 100 includes a plurality of heat exchange pipes 135 that are arranged at regular intervals in parallel with each other, inner plates 140, 141 where both ends of the heat exchange pipes 135 are inserted and fixed, and outer plates 150, 151 that cover the outer surfaces of the inner plates 140, 141 and form spaces inside.
• the heat exchange pipe 135 is a plane type having a rectangular cross section that is larger in width of a side, which contacts with combustion gas making laminar flow than height and the side contacting with the combustion gas is flat, such that manufacturing is easy.
• Insertion holes 140a, 141a are formed through the inner plate 140, 141 and both ends of the heat exchange pipes 135 are inserted in the insertion holes 140a, 141a.
• the heat exchange pipes 135 are inserted in the insertion holes 140a, 141a formed through the inner plate 140, 141 and brazing is applied to the portion where both ends of the heat exchange pipes 135 are inserted in the insertion holes 140a, 141a of the inner plate 140, 141, such that sealing is maintained.
• the gaps between the heat exchange pipes 135 that are arranged in parallel should be maintained at regular intervals to increase heat transfer efficiency. Further, the laminar flow of the combustion gas should be maintained by forming the gaps within 0.5 to 2.0 mm to achieve effective heat transfer.
• outer plates 150, 151 are attached to the outer surfaces of the inner plates 140,
• a heating water inlet 131 is formed at the outer plate 150 and heating water outlet
• Heating water flows along paths indicated by arrows in FIG. 3. Heating water flowing into the heating water inlet 131 flows into the space between the outer plate 150 and the inner plate 140, circulates inside the heat exchange pipes 135 through the insertion holes 140a formed through the inner plate 140, flows into the space between the other inner plate 141 and the outer plate 151 through the insertion holes 141a formed through the inner plate 141, and then is discharged outside through the heating water outlet 132.
• FIG. 5 is a cross-sectional plan view showing the structure of a plane type heat exchanger according to another embodiment of the present invention
• FIG. 6 is an exploded perspective view of FIG. 5.
• a heat exchanger 200 according to a second embodiment of the present invention has a configuration in which heating water circulates in an S-shape such that the paths alternate inside heat exchange pipes 235.
• sub-plates 245, 246 are provided between inner plates 240, 241 and outer plates 250, 251 to make brazing easy. That is, brazing is easily applied to materials that are difficult to braze.
• the heat exchanger 200 includes a plurality of heat exchange pipes 235 that are arranged at regular intervals in parallel with each other, the inner plates 240, 241 where both ends of the heat exchange pipes 235 are inserted and fixed, the sub-plates 245, 246 that are attached to the inner plates 240, 241 and support the outer plates 250, 251 to form flow channels of heating water, the outer plates 250, 251 that cover the outer surfaces of the sub-plates 245, 246 and are divided into a plurality of sections having spaces inside, and fixing plates 260, 261 that fix the outer plates 250, 251 to the sub-plates 245, 246.
• the outer plates 250, 251 are substantially bent in a U-shape and cover the outer sides of the flow channel holes 245a, 246a formed through the sub-plates 245, 246, and both edges of the outer plates 250, 251 are sealed, such that airtightness of the heating water is kept.
• the heating water flows into a heating water inlet 231, passes through the space covered by the outer plate 250, circulates along the heat exchange pipes 235 through the flow channel hole 245a formed through the sub-plate 245 and the insertion holes 240a formed through the inner plate 240, and continues flowing into the space covered by the outer plate 251 through the insertion hole 241a formed through the other inner plate 241 and the flow channel hole 246a formed through the sub-plate 246.
• the heating water changes the flow direction along the next heat exchange pipe 235 that is communicated with the outer plates 250, 251 and sequentially flows as shown in FIG. 5.
• the heating water is discharged outside through a heating water outlet 232, for heating or hot water.
• a plane type heat exchanger according to the present invention has plane type multi-layered heat exchange pipes, which are arranged at regular intervals, such that it is possible to easily manufacture and improve heat exchange efficiency.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Geometry (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
• Details Of Fluid Heaters (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (2)

Family

ID=40626318

Family Applications (1)

Country Status (6)

Cited By (2)

Families Citing this family (6)

Family Cites Families (17)

• 2007
  • 2007-11-08 KR KR1020070113994A patent/KR20090047906A/ko not_active Application Discontinuation
• 2008
  • 2008-10-22 UA UAA201007072A patent/UA98821C2/ru unknown
  • 2008-10-22 WO PCT/KR2008/006230 patent/WO2009061087A2/en active Application Filing
  • 2008-10-22 EP EP08846441.7A patent/EP2215420A4/de not_active Withdrawn
  • 2008-10-22 US US12/741,420 patent/US20110017428A1/en not_active Abandoned
  • 2008-10-22 CN CN200880115354A patent/CN101861507A/zh active Pending

Non-Patent Citations (1)

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