US2929408A - Fin construction - Google Patents

Fin construction Download PDF

Info

Publication number
US2929408A
US2929408A US504228A US50422855A US2929408A US 2929408 A US2929408 A US 2929408A US 504228 A US504228 A US 504228A US 50422855 A US50422855 A US 50422855A US 2929408 A US2929408 A US 2929408A
Authority
US
United States
Prior art keywords
fin
fins
member
heat exchange
tube
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
US504228A
Inventor
Kenneth A Weatherwax
Lewis R Smith
John F Pearson
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.)
ACME IND Inc
Original Assignee
ACME IND Inc
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 ACME IND Inc filed Critical ACME IND Inc
Priority to US504228A priority Critical patent/US2929408A/en
Application granted granted Critical
Publication of US2929408A publication Critical patent/US2929408A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/40Tubular 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
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/4935Heat exchanger or boiler making
    • Y10T29/49377Tube with heat transfer means
    • Y10T29/49378Finned tube
    • Y10T29/49384Internally finned
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49826Assembling or joining
    • Y10T29/49879Spaced wall tube or receptacle
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49826Assembling or joining
    • Y10T29/49908Joining by deforming
    • Y10T29/49925Inward deformation of aperture or hollow body wall
    • Y10T29/49927Hollow body is axially joined cup or tube
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49826Assembling or joining
    • Y10T29/49908Joining by deforming
    • Y10T29/49925Inward deformation of aperture or hollow body wall
    • Y10T29/49927Hollow body is axially joined cup or tube
    • Y10T29/49929Joined to rod

Description

March 22, 1960 K. A. wEATHERwAx ETAL 2329308 FIN coNsTRucTIoN Filed April 27, 1955 5 'z 9 7 INVENToRs KEN/VET/-l A. WEATHERWAX LEM/AS` R SMITH, 'JOHN E PERSO/V United FIN CONSTRUCTIN Kenneth A. Weatherwax, Lewis R. Smith, and John. F. Pearson, Jackson, Mich., assignors to Acme Industries, Inc., Jackson, Mich., a corporation of Delaware Application April 27, 1955, Serial No. 504,228

1 Claim. (Cl. 138-38) .The present invention relates to heat exchange tubes, and more particularly to tubes of this class having internal fins arranged to promote vbetter heat transfer between a fluid outside the tube and a fluid fiowing within the tube.

Heretofore, the art has sought to provide internally fin heat exchange tubes in which the fluid flowing within the tube would give up heat to or receive heat from the extended surface areas of the fins past which it flowed, which fins would intnrn give up heat to or receive heat from the outside wall of the tube. In this way, the heat transfer between fiuids outside and inside vthe tube has been somewhat increased. ln an eifort to provide internally finned tubes adapted to enjoy this increased heat transfer, it has been proposed to form the tubes with integral fins extending inwardly from the side walls thereof and formed by machining or extruding or the like. However, it has not been possible to increase the interior surface of the tube by substantially more than one hundred percent by this arrangement; and the cost of manufacturing such tubes has been quite high. Moreover, it has been both difficult and expensive to remove the portions of the fins adjacent the tube ends when it has been desired to install the tubes as in the tube Sheet of a heat exchange device.

In a further eifort to provide suitable internally fin tubes of this type, it has been proposed to insert the fins within the tubes separately and then fasten them to the tube walls as by soldering or brazing or riveting or the like. However, it has been found in practice that such lin assemblies readily break loose from their attachments and are extremely difficult to assemble. Moreover, the inserts which have heretofore been used have been found to give a much smaller increase in heat transfer than in the case of integral internal fins, and in some cases have been found to increase the heat transfer hardly at all.

Although many attempts Were made to overcome the foregoing difliculties and other disadvantages, none, as far as we are aware, was entirely successful when carried into practice commercially on an industrial Scale.

It has now been dscovered that if the fin assemblies are actually embedded in the interior wall of the tube, the heat exchange tube assemblies may be quickly and inexpensively assembled and will prove strong and durable, but most important, will give greatly increased heat exchange performance.

Accordingly, it is an object of the present invention to provide heat exchange tubes having improved heat exchange characteristics.

Another object of the invention is to provide heat exchange tubes having fin inserts which may readily be formed by extrusion or the like.

The invention also contemplates providing heat exchange tubes having internal fin assemblies which may be quickly and easily applied to the interior of the tube.

It is a further object of the invention to provide methods of manufacturing heat exchange tubes having the foregoing characteristics.

'bodiment of heat exchange tube according to our invention, taken on the line 2-2 of Figure 1;

Figure 3 shows a partially assembled modification of heat exchange tube according to our invention as viewed in Figure 2;

Figure 4 llustrates the embodiment of Figure 3 completely assembled;

Figure 5`is a cross-sectional view of still another modification of our invention at an initial stage of assembly;

Figure 6 is another view of the embodiment of Figure 5 shown after assembly is completed; and

Figure 7 is a greatly enlarged fragmentary cross-sectional view of a portion of a heat exchange according to our invention, as seen on the line 7-7 of Figure 1.

Referring now to the drawing in greater detail, v'we have shown in Figures 1 and 2 a heat exchange tube indicated generally at 1 and comprising an outer hollow metal tubular member 3 having therein a fin member 5 comprsing a plurality of radially extending longitudinally disposed fins 7 having at their outer ends circumferentially spaced longitudinally extending edges 9. The tubular member arid fin member of Figures 1 and 2, as in the case of the corresponding members in the embodiments to follow, are preferably made of soft metals having high coefficience of thermal conductivity such as copper or aluminum or the like. In practice it has been found desirable that the tubular member 3 be formed of copper and that the fin member 5 be formed of such an aluminum alloy, as for example, 63S-T5, 63S-T6 or 63S-T2, properly aged. Materials such Vas these aluminum alloys may be readily extruded to the desired shape."

The' tube of Figures l and 2 may be assembled by inserting fin member 5 within tubular member 3 and then reducing tubular member 3 as by die rolling or s'waging or the like so as to form an interference fit between edges 9 and the interior wall surface of member 3. In Figure 7, we have shown somewhat diagrammatically a greatly enlarged fragment of Figures 1 and 2 taken on the line 7- 7 of Figure 1, which shows how a iin 7 will actually penetrate the member 3 when the two are brought into interference fit and will become embedded in member 3. Fns 7 actually become embedded in member 3, as shown in Figure 7; and the adjacent metal of member 3 actually tends to build up on either side of edges 9 when fin 7 is embedded in member 3, much in the way of a meniscus, as shown in Figure 7. This embedding of the fins in the tube walls forms a very important part of our invention, since it has been found that the heating transfer between fins 7 and member 3 is very greatly increased by this construction, as compared to a construction in which the fin members are held against the outer tubular wall by welding or riveting or brazing or the like. Although the scientific principle involved is not known With certainty, it is believed that in the course of embedding the fins in the outer wall, a very intimate, even atomic, contact is made between the respective metals, which intimate contact permits heat fiow in substantially the same manner as in the case of a fin assembly which has been formed integrally with straightened within tubular member 3 as by having their radii of curvature increased, edges 9 lwill move substan-` portion 15.` Figure 3 shows the first stage of assembly` of the tube according to this embodiment; and as therein shown, fin members 11 are inserted one by one soas to to form by extrusion or otherwise. The tubular member may then be reduced as by die rolling or swaging or the like; or edges 13 may be embedded in the tubular member by forcing them radially outwardly by increasing the radius of curvaturefof web portions 15.l To this latter end, a mandrel may be passed through the internal void defined by the three fin members 11, in interference contact with the crown of each web portion 15 so as to reduce the radii of curvature of these Web portions and press edges 13 into the tubular member. In Figures and 6, we have shown still another embodiment of heat exchange tube according to our invention,V in which assemblyis effected by inserting a pair of complementary fin members 17 within the tubular member, each fin member terminating in a pair of circuinferentiaily spaced longitudinal edges 19 and having along opposite sides thereof a pair of concavely curved portions 21 spaced apart by a relatively fiat medial web portion 23. The radii of curvature of portions 21 may then be reduced by passing a mandrel through the interior voids as in the case of the embodiment of Figures 3 and 4 whereupon these portions will become straightened Vor partially straightened. Medial web portions 23 Will thus be brought into abutment and will press against each other, which pressure will be transmitted back to edges 19 to embed them somewhat within the tubular member. Accordingly, it willbe seen that we have provided'heat exchange tubes which have extremely efi'icient heat trans fer characteristics and yet are simple and inexpensive in construction and rugged and durable inv use. Moreover, it will be seen that we have provided methods for manufacturing heat exchange tubes which may be practiced cheaply with a minimum of equipment to produce with form a hollow fin assembly which would be very ldiflicult characteristics.

Thus, it will be seen that We have achieved all of the objects of our invention.

Although the presentrinvention has been described in conjunction With preferred embodiments, it is to be understood that modifications and variations may be resorted to without departing from the 'spirit and scope of the invention; as those skilled in the art will readily understand. Such modifications and variations are considered 'to be within the purview and scope of the invention and appended claim.

We claim: l

A heat exchange Vtube for conducting a refrigerant comprising an outer tubular member of relativeiy soft contractible copper and an internal fin member disposed in said tubular member, said fin member being an aluminum alloy harder and more resilient than the copper material of said tubular member, said fin member being of an integral construction and having a plurality of radial fins of similar'V form and spacing extending outwardly from a common central core into intimate, unbonded, heat-conductive contact with the inner surface of said tubular member at the outer circumferential ends of said fins, said radial fins each having a cross section increasing in tbickness from a point adjacent said core outwardly toward said inner surface, said outer circumferential ends of said fins having an interference fit with said inner surface, said fins being disposed out of diametrical relation with each other so as to augment the deection of said fins upon radial leading, said enter circumferentiai ends of'said fins each having that stres-sed abutment relation with said inner surface which results from a radial contraction of said tubular member upon said fin member to provide said interference fit within the elastic limit of said fins.

References Cited in the file of this patent UNITED STAT ES PATENTS

US504228A 1955-04-27 1955-04-27 Fin construction Expired - Lifetime US2929408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US504228A US2929408A (en) 1955-04-27 1955-04-27 Fin construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US504228A US2929408A (en) 1955-04-27 1955-04-27 Fin construction

Publications (1)

Publication Number Publication Date
US2929408A true US2929408A (en) 1960-03-22

Family

ID=24005387

Family Applications (1)

Application Number Title Priority Date Filing Date
US504228A Expired - Lifetime US2929408A (en) 1955-04-27 1955-04-27 Fin construction

Country Status (1)

Country Link
US (1) US2929408A (en)

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3195627A (en) * 1961-04-12 1965-07-20 Gen Cable Corp Heat exchangers
US3196905A (en) * 1962-11-06 1965-07-27 Walker Mfg Co Exhaust system
US3394736A (en) * 1966-02-21 1968-07-30 Acme Ind Inc Internal finned tube
US4132264A (en) * 1974-12-20 1979-01-02 Ecodyne Corporation Plastic heat exchange tube
US4190105A (en) * 1976-08-11 1980-02-26 Gerhard Dankowski Heat exchange tube
US4265275A (en) * 1976-06-30 1981-05-05 Transelektro Magyar Villamossagi Kulkereskedelmi Vallalat Internal fin tube heat exchanger
US4286655A (en) * 1979-05-21 1981-09-01 Trojani Benito L Finned tube for heat exchangers
US4296539A (en) * 1978-01-27 1981-10-27 Kobe Steel, Limited Heat transfer tubing for natural gas evaporator
US4352378A (en) * 1979-07-16 1982-10-05 Transelektro Magyar Villamossagi Kulkereskedelmi Vallalat Ribbed construction assembled from sheet metal bands for improved heat transfer
US4358862A (en) * 1979-01-22 1982-11-16 Thermasol, Ltd. Connector assembly for whirlpool system
FR2564937A1 (en) * 1984-05-24 1985-11-29 Spiro Research Bv Outlet pipe
US4807962A (en) * 1986-03-06 1989-02-28 American Telephone And Telegraph Company, At&T Bell Laboratories Optical fiber cable having fluted strength member core
US4881596A (en) * 1986-04-21 1989-11-21 Gyorgy Bergmann Heat exchange pipe for heat transfer
US5467826A (en) * 1994-09-30 1995-11-21 Marathon Oil Company Oilfield tubing string integrally enclosing a fluid production or injection tube and a service line
US6283159B1 (en) * 1998-09-01 2001-09-04 Bestex Kyoei Co., Ltd. Double-walled pipe structure
US6286465B1 (en) * 2000-04-28 2001-09-11 Aos Holding Company Water heater flue system
US6360782B1 (en) * 1999-10-08 2002-03-26 Kabushiki Kaisha Yutaka Giken Exhaust pipe assembly of two-passage construction
US6365837B2 (en) * 1998-08-31 2002-04-02 James D. Mitchem Non-tangling line
US6422179B2 (en) 2000-04-28 2002-07-23 Aos Holding Company Water heater flue system
US6481492B1 (en) * 1998-09-16 2002-11-19 China Petro-Chemical Corp. And Others Heat exchanger tube, a method for making the same, and a cracking furnace or other tubular heat furnaces using the heat exchanger tube
US20030094026A1 (en) * 2001-09-05 2003-05-22 Yasuyuki Hama Aluminum extrusion material for hydraulic bulge forming and hydraulic bulge forming method using the extrusion material
US20050043105A1 (en) * 2003-08-20 2005-02-24 Dine Donald W. Propeller shaft
US6918839B2 (en) * 2002-01-28 2005-07-19 The Boeing Company Damage tolerant shaft
US20060130887A1 (en) * 2004-11-05 2006-06-22 Ming-Liang Tsai Structural support member
EP1388720A3 (en) * 2002-08-08 2006-09-13 MAHLE Filter Systems Japan Corporation Triple-tube type heat exchanger and method of producing same
US20070209727A1 (en) * 2006-03-13 2007-09-13 Mitsuhiro Suzuki Inner-space-sectioned tubes and method for manufacturing the same
US20070295825A1 (en) * 2004-04-16 2007-12-27 Mcnaughton Patrick J Windshield Heat and Clean
FR2924492A1 (en) * 2007-11-29 2009-06-05 Valeo Systemes Thermiques Flat tube reinforcing unit i.e. metallic rod, for e.g. high temperature heat exchanger, in motor vehicle, has ends respectively inserted at axial ends of contiguous tubes, and central part placed in contact with wall, where unit is extruded
US20090294112A1 (en) * 2008-06-03 2009-12-03 Nordyne, Inc. Internally finned tube having enhanced nucleation centers, heat exchangers, and methods of manufacture
US20100192386A1 (en) * 2009-02-05 2010-08-05 Hause Kevin M Transmission Assembly for a String Trimmer
US20100276509A1 (en) * 2009-04-30 2010-11-04 Mauro James R Drinking straw with filter member
US20130180616A1 (en) * 2012-01-17 2013-07-18 Susumu Satou Double Pipe and Coupling Structure for the Pipe
US20140054358A1 (en) * 2007-04-30 2014-02-27 Mark Andreychuk Coiled tubing with heat resistant conduit
US20150211115A1 (en) * 2014-01-28 2015-07-30 Hzo, Inc. Multi-channel pyrolysis tubes, material deposition equipment including the same and associated methods
US20150226359A1 (en) * 2013-06-20 2015-08-13 The Boeing Company Methods of manufacturing a fluid distribution system assembly
GB2526194A (en) * 2014-03-28 2015-11-18 Boeing Co Systems, methods and apparatus for internally supported shafts
US9194512B2 (en) 2007-04-30 2015-11-24 Mark Andreychuk Coiled tubing with heat resistant conduit
US20170030652A1 (en) * 2015-07-30 2017-02-02 Senior Uk Limited Finned coaxial cooler
US9574348B2 (en) 2014-05-03 2017-02-21 Charles Dwight Jarvis Tubular composite beams

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1591116A (en) * 1924-08-27 1926-07-06 Pittsburgh Steel Products Comp Method of forming tubes
US1914477A (en) * 1929-12-02 1933-06-20 Alfred J Berg Heat exchanger method
US2386159A (en) * 1944-02-17 1945-10-02 American Locomotive Co Heat exchanger fin tube
US2693026A (en) * 1950-02-17 1954-11-02 Modine Mfg Co Method of making concentric tubes with radial fins
US2722733A (en) * 1950-11-08 1955-11-08 Cleaver Brooks Co Method of making heat exchanger tube
US2726681A (en) * 1950-09-18 1955-12-13 Brown Fintube Co Internally finned tube

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1591116A (en) * 1924-08-27 1926-07-06 Pittsburgh Steel Products Comp Method of forming tubes
US1914477A (en) * 1929-12-02 1933-06-20 Alfred J Berg Heat exchanger method
US2386159A (en) * 1944-02-17 1945-10-02 American Locomotive Co Heat exchanger fin tube
US2693026A (en) * 1950-02-17 1954-11-02 Modine Mfg Co Method of making concentric tubes with radial fins
US2726681A (en) * 1950-09-18 1955-12-13 Brown Fintube Co Internally finned tube
US2722733A (en) * 1950-11-08 1955-11-08 Cleaver Brooks Co Method of making heat exchanger tube

Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3195627A (en) * 1961-04-12 1965-07-20 Gen Cable Corp Heat exchangers
US3196905A (en) * 1962-11-06 1965-07-27 Walker Mfg Co Exhaust system
US3394736A (en) * 1966-02-21 1968-07-30 Acme Ind Inc Internal finned tube
US4132264A (en) * 1974-12-20 1979-01-02 Ecodyne Corporation Plastic heat exchange tube
US4265275A (en) * 1976-06-30 1981-05-05 Transelektro Magyar Villamossagi Kulkereskedelmi Vallalat Internal fin tube heat exchanger
US4190105A (en) * 1976-08-11 1980-02-26 Gerhard Dankowski Heat exchange tube
US4296539A (en) * 1978-01-27 1981-10-27 Kobe Steel, Limited Heat transfer tubing for natural gas evaporator
US4358862A (en) * 1979-01-22 1982-11-16 Thermasol, Ltd. Connector assembly for whirlpool system
US4286655A (en) * 1979-05-21 1981-09-01 Trojani Benito L Finned tube for heat exchangers
US4352378A (en) * 1979-07-16 1982-10-05 Transelektro Magyar Villamossagi Kulkereskedelmi Vallalat Ribbed construction assembled from sheet metal bands for improved heat transfer
FR2564937A1 (en) * 1984-05-24 1985-11-29 Spiro Research Bv Outlet pipe
US4807962A (en) * 1986-03-06 1989-02-28 American Telephone And Telegraph Company, At&T Bell Laboratories Optical fiber cable having fluted strength member core
US4881596A (en) * 1986-04-21 1989-11-21 Gyorgy Bergmann Heat exchange pipe for heat transfer
US5467826A (en) * 1994-09-30 1995-11-21 Marathon Oil Company Oilfield tubing string integrally enclosing a fluid production or injection tube and a service line
US6365837B2 (en) * 1998-08-31 2002-04-02 James D. Mitchem Non-tangling line
US6283159B1 (en) * 1998-09-01 2001-09-04 Bestex Kyoei Co., Ltd. Double-walled pipe structure
US6481492B1 (en) * 1998-09-16 2002-11-19 China Petro-Chemical Corp. And Others Heat exchanger tube, a method for making the same, and a cracking furnace or other tubular heat furnaces using the heat exchanger tube
US6530422B2 (en) 1998-09-16 2003-03-11 China Petro-Chemical Corporation Heat exchanger tube, a method for making the same, and a cracking furnace or other tubular heat furnaces using the heat exchanger tube
US6360782B1 (en) * 1999-10-08 2002-03-26 Kabushiki Kaisha Yutaka Giken Exhaust pipe assembly of two-passage construction
US6286465B1 (en) * 2000-04-28 2001-09-11 Aos Holding Company Water heater flue system
US6422179B2 (en) 2000-04-28 2002-07-23 Aos Holding Company Water heater flue system
US20030094026A1 (en) * 2001-09-05 2003-05-22 Yasuyuki Hama Aluminum extrusion material for hydraulic bulge forming and hydraulic bulge forming method using the extrusion material
US6918839B2 (en) * 2002-01-28 2005-07-19 The Boeing Company Damage tolerant shaft
EP1388720A3 (en) * 2002-08-08 2006-09-13 MAHLE Filter Systems Japan Corporation Triple-tube type heat exchanger and method of producing same
US20050043105A1 (en) * 2003-08-20 2005-02-24 Dine Donald W. Propeller shaft
US6986713B2 (en) * 2003-08-20 2006-01-17 Gkn Driveline North America, Inc. Propeller shaft
US20070295825A1 (en) * 2004-04-16 2007-12-27 Mcnaughton Patrick J Windshield Heat and Clean
US8047451B2 (en) * 2004-04-16 2011-11-01 Mcnaughton Incorporated Windshield heat and clean
US7779851B2 (en) * 2004-11-05 2010-08-24 Ming-Liang Tsui Structural support member
US20060130887A1 (en) * 2004-11-05 2006-06-22 Ming-Liang Tsai Structural support member
US20070209727A1 (en) * 2006-03-13 2007-09-13 Mitsuhiro Suzuki Inner-space-sectioned tubes and method for manufacturing the same
US7431053B2 (en) * 2006-03-13 2008-10-07 Mikkaichi Steel Tube Works, Ltd. Inner-space-sectioned tubes and method for manufacturing the same
US20140054358A1 (en) * 2007-04-30 2014-02-27 Mark Andreychuk Coiled tubing with heat resistant conduit
US8827140B2 (en) * 2007-04-30 2014-09-09 Mark Andreychuk Coiled tubing with retainer for conduit
US9194512B2 (en) 2007-04-30 2015-11-24 Mark Andreychuk Coiled tubing with heat resistant conduit
FR2924492A1 (en) * 2007-11-29 2009-06-05 Valeo Systemes Thermiques Flat tube reinforcing unit i.e. metallic rod, for e.g. high temperature heat exchanger, in motor vehicle, has ends respectively inserted at axial ends of contiguous tubes, and central part placed in contact with wall, where unit is extruded
US20090294112A1 (en) * 2008-06-03 2009-12-03 Nordyne, Inc. Internally finned tube having enhanced nucleation centers, heat exchangers, and methods of manufacture
US20100192386A1 (en) * 2009-02-05 2010-08-05 Hause Kevin M Transmission Assembly for a String Trimmer
US8495817B2 (en) * 2009-02-05 2013-07-30 Actuant Corporation Transmission assembly for a string trimmer
US20100276509A1 (en) * 2009-04-30 2010-11-04 Mauro James R Drinking straw with filter member
US20130180616A1 (en) * 2012-01-17 2013-07-18 Susumu Satou Double Pipe and Coupling Structure for the Pipe
US8978711B2 (en) * 2012-01-17 2015-03-17 Watanabe Seisakusho Co., Ltd. Double pipe and coupling structure for the pipe
US20150226359A1 (en) * 2013-06-20 2015-08-13 The Boeing Company Methods of manufacturing a fluid distribution system assembly
US20150211115A1 (en) * 2014-01-28 2015-07-30 Hzo, Inc. Multi-channel pyrolysis tubes, material deposition equipment including the same and associated methods
GB2526194A (en) * 2014-03-28 2015-11-18 Boeing Co Systems, methods and apparatus for internally supported shafts
GB2526194B (en) * 2014-03-28 2017-08-30 Boeing Co Systems, methods and apparatus for internally supported shafts
US9574348B2 (en) 2014-05-03 2017-02-21 Charles Dwight Jarvis Tubular composite beams
US20170030652A1 (en) * 2015-07-30 2017-02-02 Senior Uk Limited Finned coaxial cooler

Similar Documents

Publication Publication Date Title
US3489209A (en) Heat exchanger having plastic and metal components
US3481394A (en) Configuration of heat transfer tubing for vapor condensation on its outer surface
US3407874A (en) Fin tube assemblage for heat exchangers
EP0237164B1 (en) Method of making a heat exchanger
US3170512A (en) Heat exchanger
US6899168B2 (en) Heat exchanger and a method for producing a heat exchanger
US2488615A (en) Oil cooler tube
KR960006994B1 (en) Method of making heat exchanger and hollow shape for it
US4296539A (en) Heat transfer tubing for natural gas evaporator
US4330036A (en) Construction of a heat transfer wall and heat transfer pipe and method of producing heat transfer pipe
EP1438545B1 (en) Finned tube for heat exchangers, heat exchanger, process for producing heat exchanger finned tube, and process for fabricating heat exchanger
US5172476A (en) Method of manufacturing heat exchanger tubing
US3662582A (en) Heat-exchange tubing and method of making it
US4154296A (en) Inner finned heat exchanger tube
US2372795A (en) Method of making heat exchange devices
US3202212A (en) Heat transfer element
EP1312885B1 (en) Heat exchange tube structured on both sides and process for making same
CN1062951C (en) Heat transfer small size tube and method of mfg. same
US5785119A (en) Heat exchanger and method for manufacturing the same
US5781996A (en) Method of manufacturing heat transfer tube
US3789920A (en) Heat transfer device
US5271151A (en) Method of making a high pressure condenser
US3411198A (en) Explosive expansion of tubes into tube sheets
US4306619A (en) Tube provided with inner fins and outer fins or pins, particularly for heat exchangers, and method therefor
SU1050584A3 (en) Heat exchanger