US3771595A - Heat exchange device - Google Patents

Heat exchange device Download PDF

Info

Publication number
US3771595A
US3771595A US00182722A US3771595DA US3771595A US 3771595 A US3771595 A US 3771595A US 00182722 A US00182722 A US 00182722A US 3771595D A US3771595D A US 3771595DA US 3771595 A US3771595 A US 3771595A
Authority
US
United States
Prior art keywords
flange
members
section
cross
elongated
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.)
Expired - Lifetime
Application number
US00182722A
Inventor
R Slaasted
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.)
Modine Manufacturing Co
Original Assignee
Modine Manufacturing Co
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 Modine Manufacturing Co filed Critical Modine Manufacturing Co
Application granted granted Critical
Publication of US3771595A publication Critical patent/US3771595A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F28F1/02—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
    • 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
    • F28F1/32—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 the means having portions engaging further tubular elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/454—Heat exchange having side-by-side conduits structure or conduit section
    • Y10S165/50—Side-by-side conduits with fins
    • Y10S165/501—Plate fins penetrated by plural conduits

Definitions

  • ABSTRACT A heat exchange device comprising a heat conducting elongated first member such as a plurality of tubes, a plurality of spaced heat conducting primarily two dimensional second members which may be flat fins having openings through which these members extend, a spacer flange at each opening integral with each second member positioned against a first member for joining the fin and thus the second member to the first member, the spacer flange having an edge bearing against another second member to maintain the spaced relationship therebetween and means forming a recessed section in the flange edge adjacent this other second member to provide space for a joining composition such as a solder and for the escape of reaction products of the joining operation whether these products are gases, liquids or solids.
  • a joining composition such as a solder
  • FIG. 1 is a fragmentary perspective view of a portion of a fin and tube heat exchanger embodying the invention.
  • FIG. 2 is a sectional view taken substantially along line 2-2 of FIG. 1.
  • FIG. 3 is a fragmentary side elevational view of a heat exchange tube showing a plurality of the adjacent fins in partial section.
  • FIG. 4 is a perspective view illustrating the relationship of a tube and a fin.
  • the heat exchange device is of the tube 11 and tin 12 construction.
  • the tubes 1 1 of which only two are shown in FIG. 2 arranged in parallel spaced relationship.
  • Each fin 12 has a spacer flange 13 struck therefrom and surrounding the opening 14 through which the tube 11 extends.
  • Each flange has an edge 15 bearing against the next fin 12 as shown in FIG. 3 to maintain the desired spaced relationship between the fins.
  • Each flange is also positioned against a tube for providing efficient heat transfer between the tubes and the fins.
  • Each of the spacer flanges 13 is formed with a recessed edge 15.
  • Each flange edge 15 is formed with a recessed section 16 adjacent the next flange 12 in order to provide space for a joining composition such as a solder as illustrated at 17 in FIG. 3.
  • These recessed sections or spacers not only facilitate metallurgical joining of the heat exchange device components but also provide an area through which the by-products of the joining reaction may escape whether these byproducts are liquid, solids or gases.
  • each first heat transfer member or tube 1 1 is oval in cross section and each flange 13 is similarly oval.
  • Each flange edge 15 is provided with a plurality of recessed sections 16, here shown as two, with the two sections being located on opposite sides of the flange.
  • each flange 13 provides a pair of opposite end edge sections 18 to provide the proper spacing of the adjacent fins from each other and a pair of elongated opposite recesses 16 for providing a firm joint.
  • the joining materials that may be used are any of those customarily employed in fin and tube heat exchangers.
  • a heat exchange device comprising: a heat conducting elongated first member having an elongated transverse cross section; and a plurality of thin, spaced, heat conducting, primarily two dimensional second members each having an opening through which said first member extends, said openings being complementary in cross section to said first member, each said second member further defining an integral spacer flange extending about each said opening projecting transversely thereto and positioned facially against said first member, said spacer flange having a distal edge substantially bearing against another said second member to maintain the spaced relationship between said second members, each said flange defining a long portion extending in the direction of elongation of said elongated cross section of the first member provided with v a recess in the distal edge portion thereofv opening toward said other second member for occupancy by a joining composition for said first and second members.
  • the device of claim 1 wherein there are provided a plurality of said elongated first members in the form of tubes so that the device constitutes a fin and tube heat exchanger.
  • each said spacer flange surrounds a said first member in contact therewith, and each said flange defines a second such long portion opposite said first said long portion and provided with a second such recess.
  • each said first memher is oval in cross section
  • each said flange is oval in cross section parallel to the second member from which it projects
  • a pair of said recesses are provided in each flange one each in the long sides of the ovaL

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

A heat exchange device comprising a heat conducting elongated first member such as a plurality of tubes, a plurality of spaced heat conducting primarily two dimensional second members which may be flat fins having openings through which these members extend, a spacer flange at each opening integral with each second member positioned against a first member for joining the fin and thus the second member to the first member, the spacer flange having an edge bearing against another second member to maintain the spaced relationship therebetween and means forming a recessed section in the flange edge adjacent this other second member to provide space for a joining composition such as a solder and for the escape of reaction products of the joining operation whether these products are gases, liquids or solids.

Description

United States Patent 1191 Slaasted Nov. 13, 1973 HEAT EXCHANGE DEVICE [75] Inventor: Raymond S. Slaasted, Racine, Wis.
[73] Assignee: Modine Manufacturing Company,
Racine, Wis.
[22] Filed: Sept. 22, 1971 [21] Appl. No.: 182,722
[52] US. Cl. 165/151 [51] Int. Cl. F28d 9/18 [58] Field of Search l65/l8l.2, 151;
[56] References Cited UNITED STATES PATENTS 2,454,357 11/1948 Tolan 165/182 1,937,343 11/1933 Higgins 165/151 x FOREIGN PATENTS OR APPLICATIONS 760,963 6/1953 Germany 165/182 Primary Examiner'Charles J. Myhre Assistant Examiner-Theophil W. Streule, Jr.
AttorneyHofgren, Wegner, Allen, Stellman & McCord [57] ABSTRACT A heat exchange device comprising a heat conducting elongated first member such as a plurality of tubes, a plurality of spaced heat conducting primarily two dimensional second members which may be flat fins having openings through which these members extend, a spacer flange at each opening integral with each second member positioned against a first member for joining the fin and thus the second member to the first member, the spacer flange having an edge bearing against another second member to maintain the spaced relationship therebetween and means forming a recessed section in the flange edge adjacent this other second member to provide space for a joining composition such as a solder and for the escape of reaction products of the joining operation whether these products are gases, liquids or solids.
4 Claims, 4 Drawing Figures HEAT EXCHANGE DEVICE BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a fragmentary perspective view of a portion of a fin and tube heat exchanger embodying the invention.
FIG. 2 is a sectional view taken substantially along line 2-2 of FIG. 1.
FIG. 3 is a fragmentary side elevational view of a heat exchange tube showing a plurality of the adjacent fins in partial section.
FIG. 4 is a perspective view illustrating the relationship of a tube and a fin.
DESCRIPTION OF THE PREFERRED EMBODIMENT In the illustrated embodiment the heat exchange device is of the tube 11 and tin 12 construction. As is customary there are a plurality of the tubes 1 1 of which only two are shown in FIG. 2 arranged in parallel spaced relationship. There are also provided a plurality of spaced fins arranged parallel to each other and transverse to the tubes 11. Each fin 12 has a spacer flange 13 struck therefrom and surrounding the opening 14 through which the tube 11 extends. Each flange has an edge 15 bearing against the next fin 12 as shown in FIG. 3 to maintain the desired spaced relationship between the fins. Each flange is also positioned against a tube for providing efficient heat transfer between the tubes and the fins. Each of the spacer flanges 13 is formed with a recessed edge 15. Each flange edge 15 is formed with a recessed section 16 adjacent the next flange 12 in order to provide space for a joining composition such as a solder as illustrated at 17 in FIG. 3. These recessed sections or spacers not only facilitate metallurgical joining of the heat exchange device components but also provide an area through which the by-products of the joining reaction may escape whether these byproducts are liquid, solids or gases.
In one embodiment as illustrated each first heat transfer member or tube 1 1 is oval in cross section and each flange 13 is similarly oval. Each flange edge 15 is provided with a plurality of recessed sections 16, here shown as two, with the two sections being located on opposite sides of the flange. Thus with this arrangement each flange 13 provides a pair of opposite end edge sections 18 to provide the proper spacing of the adjacent fins from each other and a pair of elongated opposite recesses 16 for providing a firm joint. 7
The joining materials that may be used are any of those customarily employed in fin and tube heat exchangers.
Having described my invention as related to the embodiment shown in the accompanying drawings, it is my intention that the invention be not limited by any of the details of description, unless otherwise specified, but rather be construed broadly within its spirit and scope as set out in the appended claims.
I claim:
1. A heat exchange device, comprising: a heat conducting elongated first member having an elongated transverse cross section; and a plurality of thin, spaced, heat conducting, primarily two dimensional second members each having an opening through which said first member extends, said openings being complementary in cross section to said first member, each said second member further defining an integral spacer flange extending about each said opening projecting transversely thereto and positioned facially against said first member, said spacer flange having a distal edge substantially bearing against another said second member to maintain the spaced relationship between said second members, each said flange defining a long portion extending in the direction of elongation of said elongated cross section of the first member provided with v a recess in the distal edge portion thereofv opening toward said other second member for occupancy by a joining composition for said first and second members.
2. The device of claim 1 wherein there are provided a plurality of said elongated first members in the form of tubes so that the device constitutes a fin and tube heat exchanger.
3. The device of claim 1 wherein each said spacer flange surrounds a said first member in contact therewith, and each said flange defines a second such long portion opposite said first said long portion and provided with a second such recess.
4. The device of claim 3 wherein each said first memher is oval in cross section, each said flange is oval in cross section parallel to the second member from which it projects, and a pair of said recesses are provided in each flange one each in the long sides of the ovaL

Claims (4)

1. A heat exchange device, comprising: a heat conducting elongated first member having an elongated transverse cross section; and a plurality of thin, spaced, heat conducting, primarily two dimensional second members each having an opening through which said first member extends, said openings being complementary in cross section to said first member, each said second member further defining an integral spacer flange extending about each said opening projecting transversely thereto and positioned facially against said first member, said spacer flange having a distal edge substantially bearing against another said second member to maintain the spaced relationship between said second members, each said flange defining a long portion extending in the direction of elongation of said elongated cross section of the first member provided with a recess in the distal edge portion thereof opening toward said other second member for occupancy by a joining composition for said first and second members.
2. The device of claim 1 wherein there are provided a plurality of said elongated first members in the form of tubes so that the device constitutes a fin and tube heat exchanger.
3. The device of claim 1 wherein each said spacer flange surrounds a said first member in contact therewith, and each said flange defines a second such long portion opposite said first said long portion and provided with a second such recess.
4. The device of claim 3 wherein each said first member is oval in cross section, each said flange is oval in cross section parallel to the second member from which it projects, and a pair of said recesses are provided in each flange one each in the long sides of the oval.
US00182722A 1971-09-22 1971-09-22 Heat exchange device Expired - Lifetime US3771595A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18272271A 1971-09-22 1971-09-22

Publications (1)

Publication Number Publication Date
US3771595A true US3771595A (en) 1973-11-13

Family

ID=22669727

Family Applications (1)

Application Number Title Priority Date Filing Date
US00182722A Expired - Lifetime US3771595A (en) 1971-09-22 1971-09-22 Heat exchange device

Country Status (1)

Country Link
US (1) US3771595A (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4269267A (en) * 1977-09-09 1981-05-26 Societe Anonyme Francaise Du Ferodo Fin and tube assembly and a method of making the assembly
US4284669A (en) * 1979-09-07 1981-08-18 Modine Manufacturing Company Method of making solder coated tubes
EP0188314A2 (en) * 1985-01-18 1986-07-23 Ford Motor Company Limited Method of attaching a tube to a fin
US4692979A (en) * 1984-08-31 1987-09-15 Dirk Pietzcker Heat exchanger and a method and apparatus for the manufacture thereof
EP0389970A2 (en) * 1989-03-30 1990-10-03 Autokühler Gmbh & Co. Kg. Fin and heat-exchanger
US5706695A (en) * 1994-02-16 1998-01-13 Behr Gmbh & Co. Method of forming fins for a heat exchanger
EP1048906A2 (en) * 1999-04-28 2000-11-02 Robert Pickering Heat exchanger for a boiler
EP1384038A1 (en) * 2001-05-04 2004-01-28 Calsonic Kansei UK Limited Heat exchanger system
EP1503145A1 (en) * 2003-07-31 2005-02-02 General Electric Company Thermal isolation device for liquid fuel components
EP1586844A1 (en) * 2002-12-25 2005-10-19 T.RAD Co,.Ltd Plate fin for heat exchanger and heat exchanger core
US6964296B2 (en) * 2001-02-07 2005-11-15 Modine Manufacturing Company Heat exchanger
FR2909912A1 (en) * 2006-12-14 2008-06-20 Valeo Systemes Thermiques Heat exchanger`s metallic blade manufacturing method for motor vehicle, involves forming holes of blade, and realizing collar along holes by tying strip around end holes and slot, where collar has maximum height equal to separation step
FR2937719A1 (en) * 2008-10-29 2010-04-30 Valeo Systemes Thermiques WING FOR HEAT EXCHANGER AND HEAT EXCHANGER COMPRISING SUCH AILT
WO2011042491A1 (en) * 2009-10-08 2011-04-14 Valeo Systemes Thermiques Collector plate for heat exchanger and corresponding heat exchanger
FR2958027A1 (en) * 2010-03-25 2011-09-30 Valeo Systemes Thermiques Blade for mechanical type heat exchanger utilized as cooling radiator for cooling internal combustion engine of vehicle, has spacing unit set at level of opening rows close to external platelets and formed by raised picots issued from plate
US20140054018A1 (en) * 2011-05-02 2014-02-27 Behr Gmbh & Co. Kg Heat exchanger, in particular intercooler
US20140250936A1 (en) * 2011-10-07 2014-09-11 Daikin Industries, Ltd. Heat exchange unit and refrigeration device
US20170067694A1 (en) * 2014-05-05 2017-03-09 Valeo Systemes Thermiques Flat tube for heat exchanger
CN108692587A (en) * 2017-04-05 2018-10-23 林内株式会社 Fin tube type heat exchanger
US20190346209A1 (en) * 2018-05-10 2019-11-14 Raytheon Company Heat exchangers for multi-axis gimbal pointing or targeting systems
US11774187B2 (en) * 2018-04-19 2023-10-03 Kyungdong Navien Co., Ltd. Heat transfer fin of fin-tube type heat exchanger

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1937343A (en) * 1932-12-07 1933-11-28 H & H Tube & Mfg Co Radiator
US2454357A (en) * 1945-12-29 1948-11-23 Warren Webster & Co Finned radiator construction
DE760963C (en) * 1941-06-12 1953-06-08 Paul H Dr-Ing Mueller Finned tube

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1937343A (en) * 1932-12-07 1933-11-28 H & H Tube & Mfg Co Radiator
DE760963C (en) * 1941-06-12 1953-06-08 Paul H Dr-Ing Mueller Finned tube
US2454357A (en) * 1945-12-29 1948-11-23 Warren Webster & Co Finned radiator construction

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4269267A (en) * 1977-09-09 1981-05-26 Societe Anonyme Francaise Du Ferodo Fin and tube assembly and a method of making the assembly
US4284669A (en) * 1979-09-07 1981-08-18 Modine Manufacturing Company Method of making solder coated tubes
US4692979A (en) * 1984-08-31 1987-09-15 Dirk Pietzcker Heat exchanger and a method and apparatus for the manufacture thereof
EP0188314A2 (en) * 1985-01-18 1986-07-23 Ford Motor Company Limited Method of attaching a tube to a fin
EP0188314A3 (en) * 1985-01-18 1989-02-15 Ford Motor Company Limited Method of attaching a tube to a fin
EP0389970A3 (en) * 1989-03-30 1990-12-12 Autokuehler Gmbh & Co. Kg. Fin and heat-exchanger having such fins
US5092397A (en) * 1989-03-30 1992-03-03 Autokuhler Gmbh & Co Kg Fin for a heat exchanger and heat exchanging system using the fin
EP0389970A2 (en) * 1989-03-30 1990-10-03 Autokühler Gmbh & Co. Kg. Fin and heat-exchanger
US5706695A (en) * 1994-02-16 1998-01-13 Behr Gmbh & Co. Method of forming fins for a heat exchanger
EP1048906A2 (en) * 1999-04-28 2000-11-02 Robert Pickering Heat exchanger for a boiler
EP1048906A3 (en) * 1999-04-28 2002-10-02 Robert Pickering Heat exchanger for a boiler
US6964296B2 (en) * 2001-02-07 2005-11-15 Modine Manufacturing Company Heat exchanger
EP1384038A1 (en) * 2001-05-04 2004-01-28 Calsonic Kansei UK Limited Heat exchanger system
EP1586844A4 (en) * 2002-12-25 2009-07-29 T Rad Co Ltd Plate fin for heat exchanger and heat exchanger core
EP1586844A1 (en) * 2002-12-25 2005-10-19 T.RAD Co,.Ltd Plate fin for heat exchanger and heat exchanger core
US20050022530A1 (en) * 2003-07-31 2005-02-03 General Electric Company Thermal isolation device for liquid fuel components
US7114321B2 (en) 2003-07-31 2006-10-03 General Electric Company Thermal isolation device for liquid fuel components
EP1503145A1 (en) * 2003-07-31 2005-02-02 General Electric Company Thermal isolation device for liquid fuel components
FR2909912A1 (en) * 2006-12-14 2008-06-20 Valeo Systemes Thermiques Heat exchanger`s metallic blade manufacturing method for motor vehicle, involves forming holes of blade, and realizing collar along holes by tying strip around end holes and slot, where collar has maximum height equal to separation step
FR2937719A1 (en) * 2008-10-29 2010-04-30 Valeo Systemes Thermiques WING FOR HEAT EXCHANGER AND HEAT EXCHANGER COMPRISING SUCH AILT
WO2010049261A1 (en) * 2008-10-29 2010-05-06 Valeo Systemes Thermiques Fin for a heat exchanger, and heat exchanger including such a fin
WO2011042491A1 (en) * 2009-10-08 2011-04-14 Valeo Systemes Thermiques Collector plate for heat exchanger and corresponding heat exchanger
FR2951259A1 (en) * 2009-10-08 2011-04-15 Valeo Systemes Thermiques COLLECTOR PLATE FOR HEAT EXCHANGER AND CORRESPONDING HEAT EXCHANGER
FR2958027A1 (en) * 2010-03-25 2011-09-30 Valeo Systemes Thermiques Blade for mechanical type heat exchanger utilized as cooling radiator for cooling internal combustion engine of vehicle, has spacing unit set at level of opening rows close to external platelets and formed by raised picots issued from plate
US20140054018A1 (en) * 2011-05-02 2014-02-27 Behr Gmbh & Co. Kg Heat exchanger, in particular intercooler
US9599413B2 (en) * 2011-05-02 2017-03-21 Mahle International Gmbh Heat exchanger, in particular intercooler
US20140250936A1 (en) * 2011-10-07 2014-09-11 Daikin Industries, Ltd. Heat exchange unit and refrigeration device
US10274245B2 (en) * 2011-10-07 2019-04-30 Daikin Industries, Ltd. Heat exchange unit and refrigeration device
US20170067694A1 (en) * 2014-05-05 2017-03-09 Valeo Systemes Thermiques Flat tube for heat exchanger
CN108692587A (en) * 2017-04-05 2018-10-23 林内株式会社 Fin tube type heat exchanger
US20180306529A1 (en) * 2017-04-05 2018-10-25 Rinnai Corporation Fin-tube type of heat exchanger
US10295281B2 (en) * 2017-04-05 2019-05-21 Rinnai Corporation Fin-tube type of heat exchanger
CN108692587B (en) * 2017-04-05 2021-01-19 林内株式会社 Finned tube type heat exchanger
US11774187B2 (en) * 2018-04-19 2023-10-03 Kyungdong Navien Co., Ltd. Heat transfer fin of fin-tube type heat exchanger
US20190346209A1 (en) * 2018-05-10 2019-11-14 Raytheon Company Heat exchangers for multi-axis gimbal pointing or targeting systems
US11150025B2 (en) * 2018-05-10 2021-10-19 Raytheon Company Heat exchangers for multi-axis gimbal pointing or targeting systems

Similar Documents

Publication Publication Date Title
US3771595A (en) Heat exchange device
US3202212A (en) Heat transfer element
US5722485A (en) Louvered fin heat exchanger
JPS5952759B2 (en) Ribbed structure assembled from metal plate strips for improved heat transfer
US2480706A (en) Internal fin for heat exchanger tubes
JP2001349685A (en) Plate type heat exchanger and its partially offset corrugated fin
GB915414A (en) Serpentined heat exchanger
JPH0590173U (en) Fin tube heat exchanger
US3732921A (en) Heat exchanger
GB2065860A (en) Flat Tube Heat Exchanger
US4465128A (en) Plate floor heat exchanger
JP5393388B2 (en) Heat exchanger and manufacturing method thereof
US2009863A (en) Heat exchanger
US2118060A (en) Finned tube
US3631922A (en) Heat exchanger fin
US3313344A (en) Plate fin heat exchanger with curved expansion tubes
US3763930A (en) Heat exchanger
US20220333873A1 (en) Brazing structure for flat tube and header plate of heat exchanger
GB672721A (en) Improvements in heat exchange apparatus, and elements therefor
EP3521746B1 (en) A flat tube for a heat exchanger
US3249156A (en) Fin-on-tube type heat exchanger
US3757857A (en) Heat exchangers
US3527292A (en) Recirculating thermosyphonic heat exchangers
WO2019131569A1 (en) Header plateless type heat exchanger
US1733646A (en) Method of making radiator core structures