US2322341A - Heat exchange unit - Google Patents

Heat exchange unit Download PDF

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Publication number
US2322341A
US2322341A US315933A US31593340A US2322341A US 2322341 A US2322341 A US 2322341A US 315933 A US315933 A US 315933A US 31593340 A US31593340 A US 31593340A US 2322341 A US2322341 A US 2322341A
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United States
Prior art keywords
tube
heat exchange
exchange unit
fins
extruded
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Expired - Lifetime
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US315933A
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Morris F Booth
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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
    • F28F1/14—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
    • 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
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • 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
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • F28F1/422—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element with outside means integral with the tubular element and inside means integral with the tubular element
    • 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
    • Y10S165/327—Thermosyphonic having vertical air draft passage

Definitions

  • This invention relates to a heat exchange unit and has particularly to do with that type of unit which is formed from extruded metal, as described in my Patent No. 2,212,912, issued August 2'7, 1940, of which this application is a continuation in part.
  • Another object of .the invention is to provide a complete evaporator in a simplified manner by bending an extruded tube which is provided at intervals with longitudinally extending fins.
  • Fig. 1 is an elevation of a heat exchange unit formed in accordance with the present invention
  • Fig. 2 is a perspective view of a portion of extruded tube and fins used to form the heat exchange unit.
  • Fig. 3 is a plan view of the unit shown in Fig. 1 illustrating the manner in which the tube is bent.
  • Fig. 4 is a section taken on th lines 4-4 of Fig. 3.
  • Fig. 5 illustrates a cross section taken on lines 5-5 of Fig. 3, in which radial fins are formed within the tube as well as on the outside.
  • FIGs. 1 to 5 The form of heat exchange unit with which the present invention is particularly concerned is illustrated in Figs. 1 to 5.
  • This form consists of a continuous tube 20 which is extruded in straight lengths from a' die and which is provided at spaced intervals along its length with radially extending fins 2
  • the entire heat ex I change unit is extruded.
  • the die may be used to form inwardly extending fins 22 as shown in Fig. 5 to increase greatly the contact surface with the tube. As a general rule the fins are mad continuous along the tube and portions of them are milled oflat spaced intervals along the tube to leave the tube clear.
  • the tube When the tube has been formed, it may be bent sinuously, as shown best in Fig. 3, so that parallel sections 24 are formed.
  • the bended part of the tube may consist of portions 25 lying between the parallel sections 24 which are provided with the fins 2
  • the bending of the tube need not be limited to a single plane but may be continued to form a heat exchange unit as illustrated in Fig. 1 wherein there are four planes of sinuous bending, each connected by finless portions of the tube and the entire unit having inlet-outlet openings 26 and 21. It will thu be seen that the fins on the parallelportion of the tube are adjacently positioned so that they cooperate with each other. to form air passageways which convey heat to or from the unit.
  • a decided advantage of the unit is that all of the parts are integral and therefore, there is no heat loss between joints.
  • An evaporator unit comprising an extruded tube bent sinuously in spaced parallel, horizontal and vertical planes with spaced parallel sections, and extruded, lengthwise extending, radial fins integral with and projecting from the walls of said tube in opposed pairs, said fins being spaced longitudinally on said tube whereby they are located on parallel portions thereof, and said tube being so bent that the fin of the adjacent vertical parallel portions form substantially closed walls between said portions and permit passage of air between said wall upwardly.
  • An evaporator unit comprising a plurality of parallel sections spaced in horizontal and vertical planes, and each section comprising an extruded tube having lengthwise extending radial fins integral with and projecting from the walls of said tube, means connecting said sections, and said sections being arranged that th fins of adjacent vertical parallel sections iorm substantially closed walls between said sections and permit passage of air between said walls upwardly.
  • An evaporator unit comprising an extruded tube bent slnuously in spaced parallel, horizontal and vertical planes with spaced parallel sections, and extruded, lengthwise extending, radial fins integral with and projecting inwardly and outwardly from the'walls of said tube in opposed pairs, said fins being spaced longitudinally on said tube whereby they are located on parallel' portions thereof, and said tube being so bent that said sections, and said sections being arranged that the outwardly extending fins of adJacent ver-.
  • tical parallel sections iorm substantially closed wall; between said sections and permit passage of air between said walls upwardly.

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  • 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)

Description

June 22, 1943.
M. F. BOOTH HEAT EXCHANGE UNIT Filed Jan. 27. 1940 'Morr z's 19%??27; BY
am, QM, 0g
ATTORNEYS June 22, 1943. M; F. BooTH HEAT EXCHANGE UNIT Filed Jan. 27, 1940 2 Shets-Sheet 2 N H H A [I I INVENTOR. Marmza 7*. B00372 7. ATTORNEY9 Patented June 22, 1943 UNITED STATES PATENT OFFICE HEAT EXCHANGE UNIT Morris F. Booth, Alden, Mich. Application January 27, 1940, Serial No. 315,933
4 Claims.
This invention relates to a heat exchange unit and has particularly to do with that type of unit which is formed from extruded metal, as described in my Patent No. 2,212,912, issued August 2'7, 1940, of which this application is a continuation in part.
It is an object of the present invention to provide a heat exchange unit which is formed of integral extruded metal, the refrigerant passageways and the heat conducting fins, all being formed in the same integral piece of metal. Further features of the invention have to do with a heat exchange unit formed of extruded metal which is preferably a non-ferrous metal, such, for instance, as aluminum, copper or brass; the extruded metal being refined by the extrusion step whereby such metals as aluminum, which could not be used in a cast form because of porosity, can now be safely used because of refining and compacting of the grains of the metal.
Another object of .the invention is to provide a complete evaporator in a simplified manner by bending an extruded tube which is provided at intervals with longitudinally extending fins.
Still other features have to do with details of structure and various modifications to which the invention adapts itself, as more clearly set forth in the specification and claims.
In the drawings:
Fig. 1 is an elevation of a heat exchange unit formed in accordance with the present invention,
Fig. 2 is a perspective view of a portion of extruded tube and fins used to form the heat exchange unit.
Fig. 3 is a plan view of the unit shown in Fig. 1 illustrating the manner in which the tube is bent.
Fig. 4 is a section taken on th lines 4-4 of Fig. 3.
Fig. 5 illustrates a cross section taken on lines 5-5 of Fig. 3, in which radial fins are formed within the tube as well as on the outside.
fined nature of aluminum after .the extrusion step, all question of leakage of the volatile refrigerant or other heat absorbing or carrying liquid, is eliminated. Heretofore, leakage has been a very serious drawback because of the poro'sity of cast aluminum.
The form of heat exchange unit with which the present invention is particularly concerned is illustrated in Figs. 1 to 5. This form consists of a continuous tube 20 which is extruded in straight lengths from a' die and which is provided at spaced intervals along its length with radially extending fins 2| which are also extruded from the same die and form integrally with the tube.
In the present invention the entire heat ex I change unit is extruded.
Due to limitations of dies, I have found tha aluminum is very well suited for use in extruded evaporator or heat exchange sections, although it will be understood that any other metals may i In some cases. the die may be used to form inwardly extending fins 22 as shown in Fig. 5 to increase greatly the contact surface with the tube. As a general rule the fins are mad continuous along the tube and portions of them are milled oflat spaced intervals along the tube to leave the tube clear.
When the tube has been formed, it may be bent sinuously, as shown best in Fig. 3, so that parallel sections 24 are formed. The bended part of the tube may consist of portions 25 lying between the parallel sections 24 which are provided with the fins 2|. The bending of the tube need not be limited to a single plane but may be continued to form a heat exchange unit as illustrated in Fig. 1 wherein there are four planes of sinuous bending, each connected by finless portions of the tube and the entire unit having inlet- outlet openings 26 and 21. It will thu be seen that the fins on the parallelportion of the tube are adjacently positioned so that they cooperate with each other. to form air passageways which convey heat to or from the unit. A decided advantage of the unit is that all of the parts are integral and therefore, there is no heat loss between joints.
I claim:
1. An evaporator unit comprising an extruded tube bent sinuously in spaced parallel, horizontal and vertical planes with spaced parallel sections, and extruded, lengthwise extending, radial fins integral with and projecting from the walls of said tube in opposed pairs, said fins being spaced longitudinally on said tube whereby they are located on parallel portions thereof, and said tube being so bent that the fin of the adjacent vertical parallel portions form substantially closed walls between said portions and permit passage of air between said wall upwardly.
2. An evaporator unit comprising a plurality of parallel sections spaced in horizontal and vertical planes, and each section comprising an extruded tube having lengthwise extending radial fins integral with and projecting from the walls of said tube, means connecting said sections, and said sections being arranged that th fins of adjacent vertical parallel sections iorm substantially closed walls between said sections and permit passage of air between said walls upwardly.
3. An evaporator unit comprising an extruded tube bent slnuously in spaced parallel, horizontal and vertical planes with spaced parallel sections, and extruded, lengthwise extending, radial fins integral with and projecting inwardly and outwardly from the'walls of said tube in opposed pairs, said fins being spaced longitudinally on said tube whereby they are located on parallel' portions thereof, and said tube being so bent that said sections, and said sections being arranged that the outwardly extending fins of adJacent ver-.
tical parallel sections iorm substantially closed wall; between said sections and permit passage of air between said walls upwardly. Y
- 7 4 MORRIS F. BOOTH.
US315933A 1940-01-27 1940-01-27 Heat exchange unit Expired - Lifetime US2322341A (en)

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Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2463997A (en) * 1944-06-19 1949-03-08 Calumet And Hecla Cons Copper Method of making integral external and internal finned tubing
US2578520A (en) * 1945-02-08 1951-12-11 Gaz De France Method and apparatus for heating by the laminar combustion of gas in the interior of dull radiation tubes
US2914454A (en) * 1956-08-09 1959-11-24 David H Gurinsky Neutronic reactor fuel element
US2986509A (en) * 1957-04-25 1961-05-30 Jr James G Duffy Fuel element for a nuclear reactor
US3046977A (en) * 1957-05-21 1962-07-31 Carroll C Figge Heating kettle
US3163202A (en) * 1960-07-19 1964-12-29 Indugas Ges Fur Ind Gasverwend Burner for industrial furnaces and the like
US3323582A (en) * 1965-04-26 1967-06-06 William H Armstrong Heat transfer device
US4306619A (en) * 1979-04-09 1981-12-22 Trojani Benito L Tube provided with inner fins and outer fins or pins, particularly for heat exchangers, and method therefor
US4317269A (en) * 1979-02-12 1982-03-02 Societe Anonyme Dite: Ateliers Et Chantiers De Bretagne-Acb Apparatus for revaporizing liquefied gases
EP0057928A2 (en) * 1981-02-10 1982-08-18 Union Carbide Corporation Atmospheric vaporizer
US4399660A (en) * 1981-02-10 1983-08-23 Union Carbide Corporation Atmospheric vaporizer
US4479359A (en) * 1980-10-01 1984-10-30 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Atmospheric heaters
US5183105A (en) * 1991-07-08 1993-02-02 Brazeway, Incorporated Opposed canted evaporator
WO1998059210A1 (en) * 1997-06-25 1998-12-30 Raco S.P.A. Heat exchanger wih finned piping
US6321792B1 (en) * 1998-06-08 2001-11-27 Norsk Hydro Asa Flow conduit and means for enlarging the surface thereof to provide cooling, and a fuel pipe, and a method for the manufacture thereof
US20040085853A1 (en) * 2002-07-24 2004-05-06 Bayer Aktiengesellschaft Mixer/heat exchanger
US20060060334A1 (en) * 2004-09-20 2006-03-23 Joe Christopher R Heat transfer augmentation in a compact heat exchanger pedestal array
US20080164016A1 (en) * 2004-07-23 2008-07-10 Lg Electronics Condenser of Refrigerator
US20110138849A1 (en) * 2008-08-26 2011-06-16 Hoshizaki Denki Kabushiki Kaisha Cooling Device
WO2013139507A1 (en) * 2012-03-19 2013-09-26 Bundy Refrigeration International Holding B.V. Heat exchanger, method for producing same and various systems having such a heat exchanger
US8662149B1 (en) 2012-11-28 2014-03-04 Robert E. Bernert, Jr. Frost free cryogenic ambient air vaporizer
US20160341481A1 (en) * 2015-05-19 2016-11-24 General Electric Company Submersible heat exchanger and methods of operating and assembling same

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2463997A (en) * 1944-06-19 1949-03-08 Calumet And Hecla Cons Copper Method of making integral external and internal finned tubing
US2578520A (en) * 1945-02-08 1951-12-11 Gaz De France Method and apparatus for heating by the laminar combustion of gas in the interior of dull radiation tubes
US2914454A (en) * 1956-08-09 1959-11-24 David H Gurinsky Neutronic reactor fuel element
US2986509A (en) * 1957-04-25 1961-05-30 Jr James G Duffy Fuel element for a nuclear reactor
US3046977A (en) * 1957-05-21 1962-07-31 Carroll C Figge Heating kettle
US3163202A (en) * 1960-07-19 1964-12-29 Indugas Ges Fur Ind Gasverwend Burner for industrial furnaces and the like
US3323582A (en) * 1965-04-26 1967-06-06 William H Armstrong Heat transfer device
EP0015799B1 (en) * 1979-02-12 1982-10-27 ATELIERS ET CHANTIERS DE BRETAGNE ACB Société anonyme dite: Apparatus for revaporizing liquefied gases and process for manufacturing such an apparatus
US4317269A (en) * 1979-02-12 1982-03-02 Societe Anonyme Dite: Ateliers Et Chantiers De Bretagne-Acb Apparatus for revaporizing liquefied gases
WO1982003675A1 (en) * 1979-02-12 1982-10-28 Jean Francois Martin Device for revaporizing liquefied gases and process for making such a device
US4306619A (en) * 1979-04-09 1981-12-22 Trojani Benito L Tube provided with inner fins and outer fins or pins, particularly for heat exchangers, and method therefor
US4479359A (en) * 1980-10-01 1984-10-30 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Atmospheric heaters
EP0057928A3 (en) * 1981-02-10 1982-09-01 Union Carbide Corporation Atmospheric vaporizer
US4399660A (en) * 1981-02-10 1983-08-23 Union Carbide Corporation Atmospheric vaporizer
EP0057928A2 (en) * 1981-02-10 1982-08-18 Union Carbide Corporation Atmospheric vaporizer
US5183105A (en) * 1991-07-08 1993-02-02 Brazeway, Incorporated Opposed canted evaporator
WO1998059210A1 (en) * 1997-06-25 1998-12-30 Raco S.P.A. Heat exchanger wih finned piping
US6321792B1 (en) * 1998-06-08 2001-11-27 Norsk Hydro Asa Flow conduit and means for enlarging the surface thereof to provide cooling, and a fuel pipe, and a method for the manufacture thereof
US7220048B2 (en) * 2002-07-24 2007-05-22 Bayer Aktiengesellschaft Mixer/heat exchanger
US20040085853A1 (en) * 2002-07-24 2004-05-06 Bayer Aktiengesellschaft Mixer/heat exchanger
US20080164016A1 (en) * 2004-07-23 2008-07-10 Lg Electronics Condenser of Refrigerator
US7571760B2 (en) * 2004-07-23 2009-08-11 Lg Electronics Inc. Condenser of refrigerator
US20060060334A1 (en) * 2004-09-20 2006-03-23 Joe Christopher R Heat transfer augmentation in a compact heat exchanger pedestal array
US20100186419A1 (en) * 2004-09-20 2010-07-29 Joe Christopher R Heat transfer augmentation in a compact heat exchanger pedestal array
US7775053B2 (en) * 2004-09-20 2010-08-17 United Technologies Corporation Heat transfer augmentation in a compact heat exchanger pedestal array
US8061146B2 (en) 2004-09-20 2011-11-22 United Technologies Corporation Heat transfer augmentation in a compact heat exchanger pedestal array
US20110138849A1 (en) * 2008-08-26 2011-06-16 Hoshizaki Denki Kabushiki Kaisha Cooling Device
WO2013139507A1 (en) * 2012-03-19 2013-09-26 Bundy Refrigeration International Holding B.V. Heat exchanger, method for producing same and various systems having such a heat exchanger
US20150053379A1 (en) * 2012-03-19 2015-02-26 Bundy Refrigeration International Holding B.V. c/o Intertrust (Netherlands) B.V. Heat exchanger, method for its production as well as several devices comprising such a heat exchanger
US8662149B1 (en) 2012-11-28 2014-03-04 Robert E. Bernert, Jr. Frost free cryogenic ambient air vaporizer
US20160341481A1 (en) * 2015-05-19 2016-11-24 General Electric Company Submersible heat exchanger and methods of operating and assembling same

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