US20110308780A1 - Heat exchanger for an annealing furnace for exchanging heat between two fluids - Google Patents

Heat exchanger for an annealing furnace for exchanging heat between two fluids Download PDF

Info

Publication number
US20110308780A1
US20110308780A1 US12/998,427 US99842709A US2011308780A1 US 20110308780 A1 US20110308780 A1 US 20110308780A1 US 99842709 A US99842709 A US 99842709A US 2011308780 A1 US2011308780 A1 US 2011308780A1
Authority
US
United States
Prior art keywords
heat exchanger
profile
fluids
heat
connecting flange
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/998,427
Inventor
Peter Ebner
Brigitte Ebner
Andreas Sauschlager
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ebner Industrieofenbau GmbH
Original Assignee
Ebner Industrieofenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ebner Industrieofenbau GmbH filed Critical Ebner Industrieofenbau GmbH
Assigned to EBNER INDUSTRIEOFENBAU GESELLSCHAFT M.B.H. reassignment EBNER INDUSTRIEOFENBAU GESELLSCHAFT M.B.H. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: EBNER, PETER (DECEASED) BY EBNER, BRIGITTE (SOLE LEGAL HEIR), SAUSCHLAGER, ANDREAS
Publication of US20110308780A1 publication Critical patent/US20110308780A1/en
Abandoned legal-status Critical Current

Links

Images

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
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • 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
    • F28F1/14—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 longitudinally
    • F28F1/16—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 longitudinally the means being integral with the element, e.g. formed by extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B5/14—Arrangements of heating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/12—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically the surrounding tube being closed at one end, e.g. return type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor

Definitions

  • the invention relates to a heat exchanger for an annealing furnace for exchanging heat between two fluids, comprising a tubular profile which comprises heat exchanger fins on its outside jacket and which is associated on at least one face side with a connecting flange with at least one flow opening for one of the two fluids, especially a hot gas.
  • the heat treatment and the optionally necessary subsequent cooling occurs under a protective gas, mostly nitrogen or hydrogen, or a mixture of these gases.
  • a protective gas mostly nitrogen or hydrogen, or a mixture of these gases.
  • the supply and discharge of heat usually occurred previously through high-temperature-resistant heat exchangers made of cast materials or ceramic.
  • Hot gases, especially fuel gases or the like flow through these heat exchangers or recuperators, with the hot gas passing heat to the heat exchanger and the same passes the heat through its outer cooling fins to an annealing chamber or the like.
  • the known heat exchangers which are made of steel tubes this occurs in such a way that these tubes comprise cooling fins on their outside jacket in order to enlarge the surface area.
  • the invention is based on the object of providing a heat exchanger for an annealing furnace which is suitable for reproducing highly dynamic temperature fluctuations, as can be required especially in the heat treatment of materials to be annealed.
  • the profile is a profile tube made of a folded sheet whose heat exchanger fins aligned in the longitudinal direction of the profile are formed by the corrugated profiles, especially the corrugated flanks, of the folded sheet.
  • the invention provides an especially simple and cost-effective possibility for producing a heat exchanger which is suitable for an annealing furnace which as a result of its low inherent heat storage capacity can realize especially dynamic temperature fluctuations in the annealing furnace in combination with an especially low material input and thus low weight.
  • the profile is a profile tube made of folded sheet, not only the outside jacket surface of the heat exchanger increases in the heat exchanger in accordance with the invention, as is the case in the state of the art, but also the inside jacket surface of the heat exchanger, thus better utilizing the energy contained in the hot gas on the one hand and enabling the realization of higher thermal energy flows with heat exchangers that are of the same size in respect of the state of the art on the other hand.
  • the invention offers the advantage that smaller and lighter heat exchangers can now be used.
  • the thermal conductivity of the heat exchanger material can virtually be ignored and the efficiency of the heat exchanger increases by a relevant factor.
  • turbulators could be associated with the heat exchanger fins on the inside jacket side of the profile tube and/or on the outside jacket side of the profile tube, which turbulators lead to an improved heat transfer by turbulences applied to the fluid flow.
  • the profile tube can be provided on both face sides with a connecting flange with at least one flow opening for one of the two profiles and a heat carrier fluid flows in the axial direction through the heat exchanger during operation.
  • the profile tube can be provided on one of the two face sides with a connecting flange with at least one flow opening for one of the two fluids, with the other of the two faces sides being sealed.
  • a fluid tube is provided which is coaxial to the profile axis and penetrates the connecting flange and protrudes in the direction of the sealed face side.
  • the heat carrier fluid can be introduced into or removed from the heat exchanger through said fluid tube, which fluid can be removed from the heat exchanger or introduced into the same through a coaxial opening in the connecting flange. Annealing furnaces with heat exchangers that require little space can thus be realized.
  • the flow opening of a heat exchanger in accordance with the invention is preferably associated with a flue of a burner which is optionally operated with a portion of the preheated heat exchanger exhaust air, which is a portion of the hot gases exiting from the heat exchanger, which is virtually for subsequent combustion.
  • FIG. 1 shows a heat exchanger in accordance with the invention in a longitudinal sectional view
  • FIG. 2 shows the heat exchanger of FIG. 1 in a sectional view along line II-II of FIG. 1 ;
  • FIG. 3 shows a constructional variant of the heat exchanger of FIG. 1 in a longitudinal partly sectional view
  • FIG. 4 shows the heat exchanger of FIG. 1 in an enlarged oblique view.
  • a heat exchanger 1 for an annealing furnace for the exchange of heat between two fluids, a hot gas 2 flowing through the interior of the heat exchanger and an interior of an annealing furnace to be heated by the heat exchanger comprises on at least one face side 3 a connecting flange 4 with at least one flow opening 8 for one of the two fluids.
  • a flue of a burner can optionally be inserted in said flow opening 8 .
  • the heat exchanger 1 is formed by a profile which in accordance with the invention is a profile tube 5 made of folded sheet whose heat exchanger fins 7 , which are aligned in the longitudinal direction of the profile tube, parallel to the profile tube axis 6 , are formed by the corrugated profile, especially the corrugated flanks, of the folded sheet.
  • the profile tube 5 is associated on both face sides with a connecting flange 4 with at least one flow opening 8 each for one of the two fluids which flow through the profile tube 5 in the direction of the profile tube axis 9 in operation.
  • the profile tube 5 is associated on one of the face sides with a connecting flange 4 with a flow opening 8 for one of the two fluids and the other of the two face sides is sealed with a sealing plate 10 .
  • a fluid tube 11 is provided which is coaxial to the profile tube axis 9 , which penetrates the connecting flange 4 and protrudes in the direction of the sealed face side, towards the sealing plate 10 .
  • the hot gas is introduced into the heat exchanger 1 via the fluid tube 11 and leaves the same through a coaxial annular gap between the fluid tube 11 and the connecting flange 4 through the flow opening 8 .
  • the heat exchanger 1 is produced by folding sheets with welded end pieces, with the folding occurring without any extension on the longitudinal sides of the profile surfaces.

Abstract

The invention relates to a heat exchanger (1) for an annealing furnace for exchanging heat between two fluids, comprising a tubular profile which comprises heat exchanger fins on its outside jacket and which is associated on at least one face side (3) with a connecting flange (4) with at least one flow opening (8) for one of the two fluids, especially a hot gas. In order to provide advantageous constructional conditions it is proposed that the profile is a profile tube made of a folded sheet whose heat exchanger fins (7) aligned in the longitudinal direction of the profile are formed by the corrugated profile, especially the corrugated flanks, of the folded sheet.

Description

    FIELD OF THE INVENTION
  • The invention relates to a heat exchanger for an annealing furnace for exchanging heat between two fluids, comprising a tubular profile which comprises heat exchanger fins on its outside jacket and which is associated on at least one face side with a connecting flange with at least one flow opening for one of the two fluids, especially a hot gas.
    • DESCRIPTION OF THE PRIOR ART
  • In the heat treatment of metallic goods to be annealed, the heat treatment and the optionally necessary subsequent cooling occurs under a protective gas, mostly nitrogen or hydrogen, or a mixture of these gases. In order to ensure a proper protective gas atmosphere which is free from impurities and causes oxidation, the supply and discharge of heat usually occurred previously through high-temperature-resistant heat exchangers made of cast materials or ceramic. Hot gases, especially fuel gases or the like, flow through these heat exchangers or recuperators, with the hot gas passing heat to the heat exchanger and the same passes the heat through its outer cooling fins to an annealing chamber or the like. In the known heat exchangers which are made of steel tubes this occurs in such a way that these tubes comprise cooling fins on their outside jacket in order to enlarge the surface area. It is disadvantageous in the known heat exchangers however that they are made of massive heat-resistant material such as cast or ceramic materials, which not only increases the heating time of the heat exchanger as a result of this large thermal mass, but also prevents the application of especially strong dynamic temperature fluctuations as a result of the large heat-storage capacity and reduces the effectiveness of the plant.
  • Based on the state of the art of the kind mentioned above, the invention is based on the object of providing a heat exchanger for an annealing furnace which is suitable for reproducing highly dynamic temperature fluctuations, as can be required especially in the heat treatment of materials to be annealed.
    • SUMMARY OF THE INVENTION
  • This object is achieved by the invention in such a way that the profile is a profile tube made of a folded sheet whose heat exchanger fins aligned in the longitudinal direction of the profile are formed by the corrugated profiles, especially the corrugated flanks, of the folded sheet.
  • The invention provides an especially simple and cost-effective possibility for producing a heat exchanger which is suitable for an annealing furnace which as a result of its low inherent heat storage capacity can realize especially dynamic temperature fluctuations in the annealing furnace in combination with an especially low material input and thus low weight. Since the profile is a profile tube made of folded sheet, not only the outside jacket surface of the heat exchanger increases in the heat exchanger in accordance with the invention, as is the case in the state of the art, but also the inside jacket surface of the heat exchanger, thus better utilizing the energy contained in the hot gas on the one hand and enabling the realization of higher thermal energy flows with heat exchangers that are of the same size in respect of the state of the art on the other hand. If the same energy quantities need to be transported in relation to the state of the art, the invention offers the advantage that smaller and lighter heat exchangers can now be used. As a result of the lower wall thickness of the heat exchanger in accordance with the invention, the thermal conductivity of the heat exchanger material can virtually be ignored and the efficiency of the heat exchanger increases by a relevant factor.
  • In order to enable the better utilization of the energy contained in the hot gas and to improve the heat transfer between the fluids and the heat exchanger, turbulators could be associated with the heat exchanger fins on the inside jacket side of the profile tube and/or on the outside jacket side of the profile tube, which turbulators lead to an improved heat transfer by turbulences applied to the fluid flow.
  • In the simplest of cases, the profile tube can be provided on both face sides with a connecting flange with at least one flow opening for one of the two profiles and a heat carrier fluid flows in the axial direction through the heat exchanger during operation.
  • As an alternative to this, the profile tube can be provided on one of the two face sides with a connecting flange with at least one flow opening for one of the two fluids, with the other of the two faces sides being sealed. Especially advantageous constructional conditions are obtained when a fluid tube is provided which is coaxial to the profile axis and penetrates the connecting flange and protrudes in the direction of the sealed face side. The heat carrier fluid can be introduced into or removed from the heat exchanger through said fluid tube, which fluid can be removed from the heat exchanger or introduced into the same through a coaxial opening in the connecting flange. Annealing furnaces with heat exchangers that require little space can thus be realized.
  • The flow opening of a heat exchanger in accordance with the invention is preferably associated with a flue of a burner which is optionally operated with a portion of the preheated heat exchanger exhaust air, which is a portion of the hot gases exiting from the heat exchanger, which is virtually for subsequent combustion.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The invention is schematically shown in the drawings by reference to an embodiment, wherein:
  • FIG. 1 shows a heat exchanger in accordance with the invention in a longitudinal sectional view;
  • FIG. 2 shows the heat exchanger of FIG. 1 in a sectional view along line II-II of FIG. 1;
  • FIG. 3 shows a constructional variant of the heat exchanger of FIG. 1 in a longitudinal partly sectional view;
  • FIG. 4 shows the heat exchanger of FIG. 1 in an enlarged oblique view.
    •  DESCRIPTION OF THE PREFERRED EMBODIMENT
  • A heat exchanger 1 for an annealing furnace for the exchange of heat between two fluids, a hot gas 2 flowing through the interior of the heat exchanger and an interior of an annealing furnace to be heated by the heat exchanger comprises on at least one face side 3 a connecting flange 4 with at least one flow opening 8 for one of the two fluids. A flue of a burner can optionally be inserted in said flow opening 8. The heat exchanger 1 is formed by a profile which in accordance with the invention is a profile tube 5 made of folded sheet whose heat exchanger fins 7, which are aligned in the longitudinal direction of the profile tube, parallel to the profile tube axis 6, are formed by the corrugated profile, especially the corrugated flanks, of the folded sheet.
  • In accordance with the embodiment according to FIGS. 1 and 2, the profile tube 5 is associated on both face sides with a connecting flange 4 with at least one flow opening 8 each for one of the two fluids which flow through the profile tube 5 in the direction of the profile tube axis 9 in operation.
  • According to the embodiment of FIG. 3, the profile tube 5 is associated on one of the face sides with a connecting flange 4 with a flow opening 8 for one of the two fluids and the other of the two face sides is sealed with a sealing plate 10. Moreover, a fluid tube 11 is provided which is coaxial to the profile tube axis 9, which penetrates the connecting flange 4 and protrudes in the direction of the sealed face side, towards the sealing plate 10. The hot gas is introduced into the heat exchanger 1 via the fluid tube 11 and leaves the same through a coaxial annular gap between the fluid tube 11 and the connecting flange 4 through the flow opening 8.
  • The heat exchanger 1 is produced by folding sheets with welded end pieces, with the folding occurring without any extension on the longitudinal sides of the profile surfaces.

Claims (5)

1. A heat exchanger for an annealing furnace for exchanging heat (1) between two fluids, comprising a tubular profile which comprises heat exchanger fins on its outside jacket and which is associated on at least one face side (3) with a connecting flange (4) with at least one flow opening (8) for one of the two fluids, especially a hot gas, wherein the profile is a profile tube (5) made of a folded sheet whose heat exchanger fins (7) aligned in the longitudinal direction of the profile are formed by the corrugated profile of the folded sheet.
2. A heat exchanger according to claim 1, wherein turbulators are associated with the heat exchanger fins (7) on the inside of the profile tube jacket and/or the outside of the profile tube jacket.
3. A heat exchanger according to claim 1, wherein a connecting flange (4) with at least one flow opening (8) for one of the two fluids is associated with the profile tube (5) at both face sides.
4. A heat exchanger according to claim 1, wherein a connecting flange (4) with at least one flow opening (8) for one of the two fluids is associated with the profile tube (5) at one of the two face sides and the other of the two face sides is sealed.
5. A heat exchanger according to claim 4, wherein a fluid tube (11) is provided which is coaxial to the profile tube axis (9) and which penetrates the connecting flange (4) and protrudes in the direction of the sealed face side.
US12/998,427 2008-10-20 2009-10-09 Heat exchanger for an annealing furnace for exchanging heat between two fluids Abandoned US20110308780A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0164108A AT507422B1 (en) 2008-10-20 2008-10-20 HEAT EXCHANGER FOR A HEAT EXCHANGER FOR HEAT EXCHANGE BETWEEN TWO FLUIDS
ATA1641/2008 2008-10-20
PCT/AT2009/000391 WO2010045664A2 (en) 2008-10-20 2009-10-09 Heat exchanger for an annealing furnace for exchanging heat between two fluids

Publications (1)

Publication Number Publication Date
US20110308780A1 true US20110308780A1 (en) 2011-12-22

Family

ID=42119728

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/998,427 Abandoned US20110308780A1 (en) 2008-10-20 2009-10-09 Heat exchanger for an annealing furnace for exchanging heat between two fluids

Country Status (13)

Country Link
US (1) US20110308780A1 (en)
EP (1) EP2342522B1 (en)
JP (1) JP2012506025A (en)
KR (1) KR20110076949A (en)
CN (1) CN102187173B (en)
AT (1) AT507422B1 (en)
BR (1) BRPI0919799A2 (en)
CA (1) CA2741095A1 (en)
MX (1) MX2011004231A (en)
RU (1) RU2493526C2 (en)
TW (1) TW201027019A (en)
WO (1) WO2010045664A2 (en)
ZA (1) ZA201102683B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140212269A1 (en) * 2011-08-30 2014-07-31 Siemens Aktiengesellschaft Cooling for a fluid flow machine
US11022340B2 (en) 2016-08-01 2021-06-01 Johnson Controls Technology Company Enhanced heat transfer surfaces for heat exchangers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2700805C1 (en) * 2019-05-13 2019-09-23 Александр Игоревич Павлов Method of longitudinal finning of heat exchanger working surface

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1912785A (en) * 1931-04-03 1933-06-06 Roy I Mills Absorption fin
US2682157A (en) * 1950-11-03 1954-06-29 Heat X Changer Co Inc Gas separation
US2692763A (en) * 1952-03-08 1954-10-26 Air Preheater Supporting spacer for annular corrugated fins
US3828851A (en) * 1972-06-20 1974-08-13 K Takayasu Heat exchanger
US4059882A (en) * 1976-05-24 1977-11-29 United Aircraft Products, Inc. Method of making an annular tube-fin heat exchanger
US4096616A (en) * 1976-10-28 1978-06-27 General Electric Company Method of manufacturing a concentric tube heat exchanger
JPH06174384A (en) * 1992-12-01 1994-06-24 Showa Alum Corp Double tube type heat exchanger
US7191824B2 (en) * 2003-11-21 2007-03-20 Dana Canada Corporation Tubular charge air cooler

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE839806C (en) * 1949-08-02 1952-05-26 Otto H Dr-Ing E H Hartmann Star-shaped folded tube as an insert tube for heat exchangers
JPS501093B1 (en) * 1970-05-23 1975-01-14
GB1579276A (en) * 1976-08-23 1980-11-19 Borg Warner Heat exchanger for cooling exhaust gas
JPS5616618A (en) * 1979-07-20 1981-02-17 Sumitomo Metal Ind Ltd Continuous annealing furnace
JPH0512277Y2 (en) * 1986-04-22 1993-03-29
RU2013747C1 (en) * 1991-04-18 1994-05-30 Ерченко Герман Николаевич Vertical tube of condenser
US5542467A (en) * 1993-07-06 1996-08-06 Societe E'etudes Et De Constructions Aero-Navales Safety annular heat exchanger for incompatible fluids
CN2313194Y (en) * 1997-10-20 1999-04-07 鞍钢新轧钢股份有限公司 Case-pipe of air heat-exchanging device of heating cover
JP3927700B2 (en) * 1998-09-07 2007-06-13 マルヤス工業株式会社 Manufacturing method of heat exchanger
JP2001012872A (en) * 1999-06-25 2001-01-19 Toyo Radiator Co Ltd Evaporator
CN2432539Y (en) * 2000-07-25 2001-05-30 宝山钢铁股份有限公司 Heat pipe heat exchanger for ball type annealing furnace
DE10349887B4 (en) * 2003-10-25 2013-03-07 Benteler Automobiltechnik Gmbh Radiator for an exhaust gas recirculation system in an internal combustion engine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1912785A (en) * 1931-04-03 1933-06-06 Roy I Mills Absorption fin
US2682157A (en) * 1950-11-03 1954-06-29 Heat X Changer Co Inc Gas separation
US2692763A (en) * 1952-03-08 1954-10-26 Air Preheater Supporting spacer for annular corrugated fins
US3828851A (en) * 1972-06-20 1974-08-13 K Takayasu Heat exchanger
US4059882A (en) * 1976-05-24 1977-11-29 United Aircraft Products, Inc. Method of making an annular tube-fin heat exchanger
US4096616A (en) * 1976-10-28 1978-06-27 General Electric Company Method of manufacturing a concentric tube heat exchanger
JPH06174384A (en) * 1992-12-01 1994-06-24 Showa Alum Corp Double tube type heat exchanger
US7191824B2 (en) * 2003-11-21 2007-03-20 Dana Canada Corporation Tubular charge air cooler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140212269A1 (en) * 2011-08-30 2014-07-31 Siemens Aktiengesellschaft Cooling for a fluid flow machine
US11022340B2 (en) 2016-08-01 2021-06-01 Johnson Controls Technology Company Enhanced heat transfer surfaces for heat exchangers

Also Published As

Publication number Publication date
AT507422A4 (en) 2010-05-15
BRPI0919799A2 (en) 2016-05-03
RU2011120166A (en) 2012-11-27
EP2342522A2 (en) 2011-07-13
EP2342522B1 (en) 2013-11-20
CN102187173B (en) 2013-04-03
WO2010045664A2 (en) 2010-04-29
WO2010045664A3 (en) 2011-04-28
AT507422B1 (en) 2010-05-15
CN102187173A (en) 2011-09-14
TW201027019A (en) 2010-07-16
ZA201102683B (en) 2012-06-27
KR20110076949A (en) 2011-07-06
RU2493526C2 (en) 2013-09-20
JP2012506025A (en) 2012-03-08
MX2011004231A (en) 2011-06-17
CA2741095A1 (en) 2010-04-29

Similar Documents

Publication Publication Date Title
US8622736B2 (en) Recuperator burner having flattened heat exchanger pipes
CN100573024C (en) Exhaust-heat exchanger
US7762807B2 (en) Gas-fired radiant tube with internal recuperator
US3920383A (en) Fluted surface heat exchanger
KR102357468B1 (en) Recuperator burner with auxiliary heat exchanger
US20110308780A1 (en) Heat exchanger for an annealing furnace for exchanging heat between two fluids
JPH04257655A (en) Small size gas combustion air heater
CN106524149A (en) Blowing and exhausting type self-preheating combustion plane heater
JP2014092329A (en) Heat exchanger for radiant tube burner
CN204923850U (en) Stove is emptyd to air preheating -type crucible
CN102252340B (en) Jet and insert combined air pre-heater capable of realizing same inlet/outlet temperature difference of gas in heat exchange pipes
US10527278B2 (en) Radiant to convection transition for fired equipment
US20070119350A1 (en) Method of cooling coal fired furnace walls
CN103134376A (en) Heat transfer tube
CN101634528A (en) Reverse heat-exchange energy-saving technology
HU180581B (en) Recuperator,preferably for industrial furnaces
JPH11211353A (en) Heating furnace using radiant tube as heat source
Ma et al. Thermal design of a high temperature bayonet tube heat exchanger with inner and outer fins
Wünning Energy saving potentials for gas fired industrial furnaces
CN106636577B (en) Annealing furnace of the burning liquid petroleum gas to heat
Flamme et al. Radiant Tube Burners
CN2527950Y (en) Fin tube heat exchanger for cage type annealing furnace
Wuenning Regenerative burners for heat treating furnaces
Jugjai et al. Heat transfer enhancement to cooling water pipe by a surface combustor heater equipped with a convection-radiation converter
JP2006511780A (en) Method in gas combustor and gas combustor and cooler combination

Legal Events

Date Code Title Description
AS Assignment

Owner name: EBNER INDUSTRIEOFENBAU GESELLSCHAFT M.B.H., AUSTRI

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:EBNER, PETER (DECEASED) BY EBNER, BRIGITTE (SOLE LEGAL HEIR);SAUSCHLAGER, ANDREAS;REEL/FRAME:026209/0638

Effective date: 20110415

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION