US2895508A - Heat exchange conduit - Google Patents
Heat exchange conduit Download PDFInfo
- Publication number
- US2895508A US2895508A US548647A US54864755A US2895508A US 2895508 A US2895508 A US 2895508A US 548647 A US548647 A US 548647A US 54864755 A US54864755 A US 54864755A US 2895508 A US2895508 A US 2895508A
- Authority
- US
- United States
- Prior art keywords
- fin
- heat exchange
- conduit
- tube
- component
- 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
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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
- 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
-
- 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
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
Definitions
- FIG. 1 A first figure.
- This invention relates to heat exchange devices, and more particularly to improvements in internally finned conduits such as are useful in various industrial heat exchange applications, such as radiators, condensers, expansion coolers, etc.
- Another object of the invention is to provide an inner fin component as aforesaid which is of novel sectional form so as to provide fluid passageways of improved form between adjacent legs of the fin component.
- Still another object of the invention is to provide in a fin component as aforesaid an improved leg surface form, whereby to obtain an improved form of fluid flow through the tube and improved heat exchange results from the contact of the fluid with the fin leg surfaces.
- Fig. 1 illustrates, in disassembled relation, an inner fin and a tube component, prior to force-fitting assembly of the parts to provide an internally finned conduit of the present invention
- Fig. 2 is a fragmentary perspective view of an assembled internally finned conduit of the invention.
- Fig. 3 is a fragmentary end view, on a greatly enlarged scale, of a detail of the finned tube construction of Fig. 2.
- an internally finned tube of the present invention may be fabricated to comprise an outer cylinder or tube as indicated at 10, comprising a conduit of any standard form; the same being constructed of any desired metallic or non-metallic substance according to the requirements of the intended use of the device.
- the inner fin component of the device is indicated generally at 12 and may conveniently comprise a metallic extrusion or casting or other fabrication in integral form of any desired metallic or non-metallic material, such as the intended use of the device may require.
- the fin component 12 comprises a plurality of legs designated 14 extending integrally and radially from a central hub or core portion 15. As shown in the drawings, the legs 14 are five in number, but it will be understood that in lieu thereof any other suitable number of leg elements may be provided, according to the dictates of the intended use of the device.
- the legs 14 are preferably formed of tapering sectional form, increasing in width toward their outer ends and terminating in foot portions 16.
- the conduit and fin components 10, 12, are separately fabricated as indicated hereinabove, by any suitable or preferred drawing, extruding, casting or spinning methods; and the foot portions 16 of the leg elements of the fin member are preferably of flattened shapes at outer end portions as originally fabricated. Then, when the tube 10 is drawn or force-fitted upon the fin component, the opposite sides of the foot portions 16 are spring-fitted against the inner surface of the conduit 10 and somewhat elastically deformed during the assembly process so as to provide a snug, resilient, force-fit and intimate mechanical bond between the feet of the fin legs and the inner surface of the conduit.
- either one or both members will elastically deform and/or cut into the other, incidental to the process of forcefitting the fin and tube components together.
- the assembly may subsequently be drawn or run through a drawing die to squeeze the tube 10 inwardly upon and into further intimate bearing connection with the core component 12.
- Fig. 3 of the drawing illustrates by means of broken and solid lines the elastic deformations set up in the foot portions 16 of the inner fin member incidental to assembly thereof within the tube 10.
- the inner fin leg portions 14 are of tapering or increasing width dimensions from their inner to their outer ends, thereby providing a more mechanically sturdy fin construction of reduced thickness and weight, compared to conventionally shaped inner fin devices.
- the side walls of the leg members 14 of the inner fin components are preferably serrated as illustrated at 18, whereby gases or liquids flowing through the tube and against the leg portions of the inner fin construction come in contact with increased surface areas for improved heat exchange results.
- the serrated surfaces 18 operate automatically to break up any streamline gas or fluid flow patterns interiorly of the tube, such as would otherwise be detrimental to efiicient heat exchange operation.
- a heat exchange conduit comprising an outer metallic shell, an internal metallic fin device comprising a longitudinal hub portion having a plurality of integral legs extending radially therefrom, each leg being of tapering sectional form of increasing width toward the outer end thereof, each leg terminating in an enlarged foot portion having an initially flattened shape at its outer surface, each foot portion being of a width greater than the width of the leg portion to which it is immediately joined whereby the opposite sides of each foot portion extend laterally beyond their correspondin leg, the longitudinally extending centers of said outer surfaces of the foot portions lying at points on a circle whose diameter is substantially the same as the inside diameter of said shell while the outer edges of said opposite sides of the foot portions lie at points on a circle whose diameter is greater than the inside diameter of said shell,
- said fin device being of harder metal than said outer shell and being disposed within said shell with the opposite sides of said foot portions and the portions of said shell which they contact being mutually deformed so that the outer surfaces of the opposite sides of said foot portions define arcs having radii greater than the radius ,of the inner surface of said shell.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Description
July 21, 1959 .E. DRAKE 2,895,508
HEAT EXCHANGE CONDUIT I Filed NOV. 23, .1955
FIG. 1
INVENTOR.
C harIes E. Drake United States Patent Ofiice 2,895,508 Patented July 21, 1959 HEAT EXCHANGE CONDUIT Charles Drake, Stroudsburg Pa., assignor to The Patterson-Kelley Company, Inc., East Stroudsburg, Pa.
This invention relates to heat exchange devices, and more particularly to improvements in internally finned conduits such as are useful in various industrial heat exchange applications, such as radiators, condensers, expansion coolers, etc.
It is an object of the present invention to provide an improved form of inner fin component for internally finned conduits, whereby the fin component may be forcefitted into the tube component as by drawing the tube over the fin component, to provide an improved mechanical bond between the fin and tube components.
Another object of the invention is to provide in an internally finned conduit construction, an inner fin component comprising integrally cast radially extending legs of novel sectional form, whereby to give the fin component an improved mechanical strength-to-weight ratio.
Another object of the invention is to provide an inner fin component as aforesaid which is of novel sectional form so as to provide fluid passageways of improved form between adjacent legs of the fin component.
Still another object of the invention is to provide in a fin component as aforesaid an improved leg surface form, whereby to obtain an improved form of fluid flow through the tube and improved heat exchange results from the contact of the fluid with the fin leg surfaces.
Other objects and advantages of the invention will appear from the specification hereinafter.
In the drawings:
Fig. 1 illustrates, in disassembled relation, an inner fin and a tube component, prior to force-fitting assembly of the parts to provide an internally finned conduit of the present invention;
Fig. 2 is a fragmentary perspective view of an assembled internally finned conduit of the invention; and
Fig. 3 is a fragmentary end view, on a greatly enlarged scale, of a detail of the finned tube construction of Fig. 2.
As illustrated in the drawing, an internally finned tube of the present invention may be fabricated to comprise an outer cylinder or tube as indicated at 10, comprising a conduit of any standard form; the same being constructed of any desired metallic or non-metallic substance according to the requirements of the intended use of the device. The inner fin component of the device is indicated generally at 12 and may conveniently comprise a metallic extrusion or casting or other fabrication in integral form of any desired metallic or non-metallic material, such as the intended use of the device may require. In any case, the fin component 12 comprises a plurality of legs designated 14 extending integrally and radially from a central hub or core portion 15. As shown in the drawings, the legs 14 are five in number, but it will be understood that in lieu thereof any other suitable number of leg elements may be provided, according to the dictates of the intended use of the device.
More specifically, as illustrated in the drawing in Fig. 3, the legs 14 are preferably formed of tapering sectional form, increasing in width toward their outer ends and terminating in foot portions 16. The conduit and fin components 10, 12, are separately fabricated as indicated hereinabove, by any suitable or preferred drawing, extruding, casting or spinning methods; and the foot portions 16 of the leg elements of the fin member are preferably of flattened shapes at outer end portions as originally fabricated. Then, when the tube 10 is drawn or force-fitted upon the fin component, the opposite sides of the foot portions 16 are spring-fitted against the inner surface of the conduit 10 and somewhat elastically deformed during the assembly process so as to provide a snug, resilient, force-fit and intimate mechanical bond between the feet of the fin legs and the inner surface of the conduit.
Depending upon the relative hardness of the materials forming the fin foot portions and the conduit 10, either one or both members will elastically deform and/or cut into the other, incidental to the process of forcefitting the fin and tube components together. Thus, when the fabrication is completed an improved mechanical bond and heat exchange transfer connection between the inner fin component and the conduit component will be efiected. If desired, the assembly may subsequently be drawn or run through a drawing die to squeeze the tube 10 inwardly upon and into further intimate bearing connection with the core component 12. Fig. 3 of the drawing illustrates by means of broken and solid lines the elastic deformations set up in the foot portions 16 of the inner fin member incidental to assembly thereof within the tube 10. Thus, optimum metal-to-metal contact between the outer ends 16 of the fin legs and the conduit 10 are assured, even though there might be imperfections in the tube and fin fabrications and/or in the relative assembling operation.
As illustrated in better detail in Fig. 3, the inner fin leg portions 14 are of tapering or increasing width dimensions from their inner to their outer ends, thereby providing a more mechanically sturdy fin construction of reduced thickness and weight, compared to conventionally shaped inner fin devices. Furthermore, as shown in the drawings, the side walls of the leg members 14 of the inner fin components are preferably serrated as ilustrated at 18, whereby gases or liquids flowing through the tube and against the leg portions of the inner fin construction come in contact with increased surface areas for improved heat exchange results. Also, the serrated surfaces 18 operate automatically to break up any streamline gas or fluid flow patterns interiorly of the tube, such as would otherwise be detrimental to efiicient heat exchange operation.
Whereas only one form of the invention has been illustrated and described in detail hereinabove, it will be understood that various changes may be made therein without departing from the spirit of the invention or the scope of the following claim:
I claim:
A heat exchange conduit comprising an outer metallic shell, an internal metallic fin device comprising a longitudinal hub portion having a plurality of integral legs extending radially therefrom, each leg being of tapering sectional form of increasing width toward the outer end thereof, each leg terminating in an enlarged foot portion having an initially flattened shape at its outer surface, each foot portion being of a width greater than the width of the leg portion to which it is immediately joined whereby the opposite sides of each foot portion extend laterally beyond their correspondin leg, the longitudinally extending centers of said outer surfaces of the foot portions lying at points on a circle whose diameter is substantially the same as the inside diameter of said shell while the outer edges of said opposite sides of the foot portions lie at points on a circle whose diameter is greater than the inside diameter of said shell,
said fin device being of harder metal than said outer shell and being disposed within said shell with the opposite sides of said foot portions and the portions of said shell which they contact being mutually deformed so that the outer surfaces of the opposite sides of said foot portions define arcs having radii greater than the radius ,of the inner surface of said shell.
References Cited in the file of this patent UNITED STATES PATENTS Pourcel Mar. 4, 1923 Fitch Feb. 4, 1941 FOREIGN PATENTS Great Britain of 1858 Great Britain Sept. 1, 1894 Great Britain Aug. 14, 1902 Germany of 1900
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US548647A US2895508A (en) | 1955-11-23 | 1955-11-23 | Heat exchange conduit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US548647A US2895508A (en) | 1955-11-23 | 1955-11-23 | Heat exchange conduit |
Publications (1)
Publication Number | Publication Date |
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US2895508A true US2895508A (en) | 1959-07-21 |
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US548647A Expired - Lifetime US2895508A (en) | 1955-11-23 | 1955-11-23 | Heat exchange conduit |
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Cited By (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3235003A (en) * | 1963-06-04 | 1966-02-15 | Cloyd D Smith | Spiral flow baffle system |
US3361198A (en) * | 1965-08-19 | 1968-01-02 | Eaton Mfg Co | Heat exchanger |
US3394736A (en) * | 1966-02-21 | 1968-07-30 | Acme Ind Inc | Internal finned tube |
US3636982A (en) * | 1970-02-16 | 1972-01-25 | Patterson Kelley Co | Internal finned tube and method of forming same |
US3705617A (en) * | 1970-11-05 | 1972-12-12 | Badger Co | Sublimation apparatus and method |
DE2903079A1 (en) * | 1978-01-27 | 1979-08-02 | Kobe Steel Ltd | HEAT EXCHANGER PIPE AND HEAT EXCHANGER PIPE ASSEMBLY FOR A PLATE EVAPORATOR AND METHOD FOR MANUFACTURING THE HEAT EXCHANGER PIPE AND THE HEAT EXCHANGER PIPE ASSEMBLY |
US4190105A (en) * | 1976-08-11 | 1980-02-26 | Gerhard Dankowski | Heat exchange tube |
US4290389A (en) * | 1979-09-21 | 1981-09-22 | Combustion Engineering, Inc. | Once through sliding pressure steam generator |
US4724899A (en) * | 1986-12-16 | 1988-02-16 | Nordson Corporation | Expandable insert for a heat exchanger |
US4865689A (en) * | 1988-01-27 | 1989-09-12 | Mobil Oil Corporation | Method and apparatus for evaporating the volatile components of a polymer |
US4892996A (en) * | 1987-08-25 | 1990-01-09 | Trw Technar Inc. | Thermostatically controlled in-line diesel fuel heater using a bimetal disc thermostat |
US5571368A (en) * | 1994-04-15 | 1996-11-05 | Graphic Laminating, Inc. | Laminating machine with improved heating and cooling |
US5639339A (en) * | 1992-12-03 | 1997-06-17 | Seal Products Incorporated | Laminating machine |
USD427669S (en) * | 1997-09-23 | 2000-07-04 | Patria Vammas Oy | Tube |
US6390183B2 (en) * | 1998-05-18 | 2002-05-21 | Matsushita Electric Industrial Co. Ltd. | Heat exchanger |
US20040173520A1 (en) * | 2003-03-06 | 2004-09-09 | Nguyen Ledu Quoc | Plastic extruded center tube profile and method of manufacture |
US20050269069A1 (en) * | 2004-06-04 | 2005-12-08 | American Standard International, Inc. | Heat transfer apparatus with enhanced micro-channel heat transfer tubing |
US20070224565A1 (en) * | 2006-03-10 | 2007-09-27 | Briselden Thomas D | Heat exchanging insert and method for fabricating same |
US20090225512A1 (en) * | 2008-03-04 | 2009-09-10 | Visser Roy A | Electronic module having thermal cooling insert |
US20090277969A1 (en) * | 2006-09-18 | 2009-11-12 | Briselden Thomas D | Radiant Heat Transfer System |
US20130216444A1 (en) * | 2012-02-17 | 2013-08-22 | Ceramatec, Inc. | Advanced fischer tropsch system |
US20140134067A1 (en) * | 2012-11-12 | 2014-05-15 | Ceramatec, Inc. | Fixed bed reactor heat transfer structure |
US20150189789A1 (en) * | 2013-12-30 | 2015-07-02 | Samsung Display Co., Ltd. | Heat radiation member for electronic device |
WO2015108853A1 (en) * | 2014-01-14 | 2015-07-23 | Cummins Filtration Ip, Inc. | Crankcase ventilation system heater |
US9162935B2 (en) | 2012-02-21 | 2015-10-20 | Ceramatec, Inc. | Compact FT combined with micro-fibrous supported nano-catalyst |
US9199215B2 (en) | 2012-02-21 | 2015-12-01 | Ceramatec, Inc. | Compact Fischer Tropsch system with integrated primary and secondary bed temperature control |
US20160070319A1 (en) * | 2014-09-08 | 2016-03-10 | Ashwin Bharadwaj | Heat sink |
CN106352732A (en) * | 2016-08-22 | 2017-01-25 | 华中科技大学 | Plug-in heat exchange enhancement assembly suitable for heat exchange tube and enhanced heat exchange tube |
US20180252475A1 (en) * | 2015-08-25 | 2018-09-06 | Danfoss Micro Channel Heat Exchanger (Jiaxing) Co., Ltd. | Heat exchange tube for heat exchanger, heat exchanger and assembly method thereof |
US20190107341A1 (en) * | 2016-03-14 | 2019-04-11 | Calsonic Kansei Corporation | Double pipe |
US11391523B2 (en) * | 2018-03-23 | 2022-07-19 | Raytheon Technologies Corporation | Asymmetric application of cooling features for a cast plate heat exchanger |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE120867C (en) * | ||||
GB189408320A (en) * | 1894-04-26 | 1894-09-01 | Antoine Dumas | Improvements in and relating to Tubes employed for Heating, Vaporising, Refrigerating, and other Purposes. |
GB190217909A (en) * | 1902-08-14 | 1903-06-04 | Edgard De Porto-Riche | Improvements relating to Steam Generators. |
US1486032A (en) * | 1922-10-24 | 1924-03-04 | Pourcel Marius Leon | Air scrubbing and cooling device for alternators |
US2230221A (en) * | 1939-10-07 | 1941-02-04 | William H Fitch | Recuperator tube corebuster |
-
1955
- 1955-11-23 US US548647A patent/US2895508A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE120867C (en) * | ||||
GB189408320A (en) * | 1894-04-26 | 1894-09-01 | Antoine Dumas | Improvements in and relating to Tubes employed for Heating, Vaporising, Refrigerating, and other Purposes. |
GB190217909A (en) * | 1902-08-14 | 1903-06-04 | Edgard De Porto-Riche | Improvements relating to Steam Generators. |
US1486032A (en) * | 1922-10-24 | 1924-03-04 | Pourcel Marius Leon | Air scrubbing and cooling device for alternators |
US2230221A (en) * | 1939-10-07 | 1941-02-04 | William H Fitch | Recuperator tube corebuster |
Cited By (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3235003A (en) * | 1963-06-04 | 1966-02-15 | Cloyd D Smith | Spiral flow baffle system |
US3361198A (en) * | 1965-08-19 | 1968-01-02 | Eaton Mfg Co | Heat exchanger |
US3394736A (en) * | 1966-02-21 | 1968-07-30 | Acme Ind Inc | Internal finned tube |
US3636982A (en) * | 1970-02-16 | 1972-01-25 | Patterson Kelley Co | Internal finned tube and method of forming same |
US3705617A (en) * | 1970-11-05 | 1972-12-12 | Badger Co | Sublimation apparatus and method |
US4190105A (en) * | 1976-08-11 | 1980-02-26 | Gerhard Dankowski | Heat exchange tube |
DE2903079A1 (en) * | 1978-01-27 | 1979-08-02 | Kobe Steel Ltd | HEAT EXCHANGER PIPE AND HEAT EXCHANGER PIPE ASSEMBLY FOR A PLATE EVAPORATOR AND METHOD FOR MANUFACTURING THE HEAT EXCHANGER PIPE AND THE HEAT EXCHANGER PIPE ASSEMBLY |
US4296539A (en) * | 1978-01-27 | 1981-10-27 | Kobe Steel, Limited | Heat transfer tubing for natural gas evaporator |
US4290389A (en) * | 1979-09-21 | 1981-09-22 | Combustion Engineering, Inc. | Once through sliding pressure steam generator |
WO1988004762A1 (en) * | 1986-12-16 | 1988-06-30 | Nordson Corporation | Expandable insert for a heat exchanger |
US4724899A (en) * | 1986-12-16 | 1988-02-16 | Nordson Corporation | Expandable insert for a heat exchanger |
US4892996A (en) * | 1987-08-25 | 1990-01-09 | Trw Technar Inc. | Thermostatically controlled in-line diesel fuel heater using a bimetal disc thermostat |
US4865689A (en) * | 1988-01-27 | 1989-09-12 | Mobil Oil Corporation | Method and apparatus for evaporating the volatile components of a polymer |
US5639339A (en) * | 1992-12-03 | 1997-06-17 | Seal Products Incorporated | Laminating machine |
US5571368A (en) * | 1994-04-15 | 1996-11-05 | Graphic Laminating, Inc. | Laminating machine with improved heating and cooling |
USD427669S (en) * | 1997-09-23 | 2000-07-04 | Patria Vammas Oy | Tube |
US6390183B2 (en) * | 1998-05-18 | 2002-05-21 | Matsushita Electric Industrial Co. Ltd. | Heat exchanger |
US20040173520A1 (en) * | 2003-03-06 | 2004-09-09 | Nguyen Ledu Quoc | Plastic extruded center tube profile and method of manufacture |
US7108139B2 (en) * | 2003-03-06 | 2006-09-19 | Purolator Filters Na Llc | Plastic extruded center tube profile and method of manufacture |
US20050269069A1 (en) * | 2004-06-04 | 2005-12-08 | American Standard International, Inc. | Heat transfer apparatus with enhanced micro-channel heat transfer tubing |
US20070224565A1 (en) * | 2006-03-10 | 2007-09-27 | Briselden Thomas D | Heat exchanging insert and method for fabricating same |
US8162040B2 (en) | 2006-03-10 | 2012-04-24 | Spinworks, LLC | Heat exchanging insert and method for fabricating same |
US20090277969A1 (en) * | 2006-09-18 | 2009-11-12 | Briselden Thomas D | Radiant Heat Transfer System |
US7876562B2 (en) * | 2008-03-04 | 2011-01-25 | Delphi Technologies, Inc. | Electronic module having thermal cooling insert |
US20090225512A1 (en) * | 2008-03-04 | 2009-09-10 | Visser Roy A | Electronic module having thermal cooling insert |
US20130216444A1 (en) * | 2012-02-17 | 2013-08-22 | Ceramatec, Inc. | Advanced fischer tropsch system |
US9011788B2 (en) * | 2012-02-17 | 2015-04-21 | Ceramatec, Inc | Advanced fischer tropsch system |
US9162935B2 (en) | 2012-02-21 | 2015-10-20 | Ceramatec, Inc. | Compact FT combined with micro-fibrous supported nano-catalyst |
US9199215B2 (en) | 2012-02-21 | 2015-12-01 | Ceramatec, Inc. | Compact Fischer Tropsch system with integrated primary and secondary bed temperature control |
US20140134067A1 (en) * | 2012-11-12 | 2014-05-15 | Ceramatec, Inc. | Fixed bed reactor heat transfer structure |
US9157689B2 (en) * | 2012-11-12 | 2015-10-13 | Ceramatec, Inc. | Fixed bed reactor heat transfer structure |
EP2917673A4 (en) * | 2012-11-12 | 2016-08-17 | Ceramatec Inc | A fixed bed reactor heat transfer structure |
US20150189789A1 (en) * | 2013-12-30 | 2015-07-02 | Samsung Display Co., Ltd. | Heat radiation member for electronic device |
US9702282B2 (en) | 2014-01-14 | 2017-07-11 | Cummins Filtration Ip, Inc. | Crankcase ventilation system heater |
WO2015108853A1 (en) * | 2014-01-14 | 2015-07-23 | Cummins Filtration Ip, Inc. | Crankcase ventilation system heater |
US20160070319A1 (en) * | 2014-09-08 | 2016-03-10 | Ashwin Bharadwaj | Heat sink |
US10103081B2 (en) * | 2014-09-08 | 2018-10-16 | Ashwin Bharadwaj | Heat sink |
US20180252475A1 (en) * | 2015-08-25 | 2018-09-06 | Danfoss Micro Channel Heat Exchanger (Jiaxing) Co., Ltd. | Heat exchange tube for heat exchanger, heat exchanger and assembly method thereof |
US10690420B2 (en) * | 2015-08-25 | 2020-06-23 | Danfoss Micro Channel Heat Exchanger (Jiaxing) Co., Ltd. | Heat exchange tube for heat exchanger, heat exchanger and assembly method thereof |
US20190107341A1 (en) * | 2016-03-14 | 2019-04-11 | Calsonic Kansei Corporation | Double pipe |
US11506459B2 (en) * | 2016-03-14 | 2022-11-22 | Marelli Cabin Comfort Japan Corporation | Double pipe |
CN106352732A (en) * | 2016-08-22 | 2017-01-25 | 华中科技大学 | Plug-in heat exchange enhancement assembly suitable for heat exchange tube and enhanced heat exchange tube |
US11391523B2 (en) * | 2018-03-23 | 2022-07-19 | Raytheon Technologies Corporation | Asymmetric application of cooling features for a cast plate heat exchanger |
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