US3149667A - Core-unit for vehicular-radiator-type heat exchanger and protective shields therefor - Google Patents

Core-unit for vehicular-radiator-type heat exchanger and protective shields therefor Download PDF

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US3149667A
US3149667A US225636A US22563662A US3149667A US 3149667 A US3149667 A US 3149667A US 225636 A US225636 A US 225636A US 22563662 A US22563662 A US 22563662A US 3149667 A US3149667 A US 3149667A
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tubes
core
unit
radiator
vehicular
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US225636A
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William V Astrup
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Young Radiator Co
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Young Radiator Co
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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
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/002—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using inserts or attachments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • 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

Definitions

  • the modern construction of motor-vehicle highways involves many types of vehicular equipment for excavating, transporting and spreading earth. Much of the equipment is massive and generally powered by Diesel engines.
  • the cooling system for such vehicular engines involves a radiator through which air is drawn by a highvelocity fan. As a rule these radiators comprise a coreunit spanning and connected to upper and lower tanks.
  • the core-unit comprises two or more rows of transversely-staggered tubes mounting a series of closely-spaced heat-dissipating fins.
  • the tubes usually are of elongated cross-section and disposed with their longer dimension parallel with the air stream.
  • the fan driven from the engine, is arranged between the engine and the radiator to cause an air flow inwardly through the core-unit.
  • the vehicle constantly moving through the dust-laden air it is inevitable that the air flow through the radiator core-unit becomes highly particulated.
  • Such air flow impinging the exposed leading edges of the front row of tubes and fins has the effect of sand blasting these tubes and fins and gradually so abrading them as to produce all-too-frequent leaks.
  • the repair or replacement of leaking radiators is expensive not only by reason of the direct cost but also because of the indirect cost of idle equipment and workmen.
  • Radiator core-units of this kind usually are made of non-ferrous metals such as copper or copper alloy, primarily for the reason that it is the metal that has the highest heat-transfer capacity and corrosion-resistant ready-solderable material consistent with production costs for material and labor.
  • metals such as copper or copper alloy
  • being a comparatively soft metal it is more readily abraded than a harder metal would be.
  • harder metals do not have the heat-transfer capacity of the softer metals and are more expensive in material and labor costs. Varied prior attempts to provide protection shields for the front row of these softer-metal tubes has met with limited use I01 one T838011 01 another.
  • the main objects of this invention therefore, are to provide an improved arrangement of protective shields for the leading edges of the front row of tubes of the conventional vehicular-radiator type of heat-exchanger subject to a particulated air-flow through the core-unit; and to provide an improved abrasion protective shield of this kind which is economical to incorporate into the manufacture of the conventional type of vehicle radiator and which has an exceedingly high endurance against abrasion by even the heaviest particulated air flow through the core-unit.
  • FIG. 1 is a perspective view of a small section of coreunit wherein the leading edges of the front row of tubes are protected against abrasion by shields constructed in accordance with this invention
  • FIG. 2 is an enlarged, end view of one of the protected tubes as viewed from the plane of the line 2-2 of FIG. 1;
  • FIG. 3 is a side view of the section of the core-unit shown in FIG. 1;
  • FIG. 4 is a fragmentary, front-end view of a section of the same taken on the plane of the line 44 of FIG. 3;
  • FIG. 5 is a reduced, plan view of a section of a doubletube-row core-unit constructed in accordance with this invention.
  • the essential concept of this invention involves a conventional core-unit for a vehicle-radiator-type heat-exchanger wherein the leading edge of each of the front row of tubes is embraced in an abrasion-protective shield.
  • a core-unit embodying the foregoing concept comprises a battery of tubes 6 mounting a series of fins 7 with the leading edges 8 of the front row of tubes 6 embraced in protective shields 9.
  • the fragment of coreunit shown in the drawing is illustrative of the general structural arrangement of the tubes 6 and fins 7 for a conventional core-unit for a radiator-type heat-exchanger for motor vehicles.
  • the tubes 6 in such a radiator are of flat, elongated form and arranged in staggered relationship, as indicated in FIG. 5.
  • the ends 11 of the tubes 6 extend a suflicient distance beyond the upper and lower fins 7 to permit telescopic positioning of the tube ends in registering openings in and bonding to header plates (not here shown) for the upper and lower tanks of the radiator.
  • the fins 7 are formed with apertures 12 to snugly embrace the tubes 6 and are arranged in closely-spaced relationship to each other.
  • the fins 7 are formed with flanges 13 around the tube apertures 11 to contactively embrace the tubes 6 and thereby enhance the heat-transfer facility of the tubes 6 to the fins 7.
  • the front row of tube apertures 12 and the flanges 13 have the forward portions thereof enlarged to accommodate the shields 9.
  • these enlarged portions of the front row of apertures 12 and flanges 13 are about half the length of the longer, external dimension of the tubes 6.
  • the shields 9, as here shown, for such elongated tubes 6, are of U-shaped form and dimensioned in width (crosswise) and depth (front to rear) to snugly embrace the leading edges 8 and the parallel sides of thetubes 6 for approximately half their longer dimension. Obviously, these shields 9 also snugly fit in the enlarged forward portions of the aligned apertures 12 and flanges 13 of the fins 7.
  • each shield 9 In length (axially of the tubes) the shields 9 are just enough less than the length of the tubes 6 to leave the tube ends 11 exposed for telescopic insertion in and bonding to the header plates (not here shown).
  • each shield 9, in the completed core-unit contactively embraces the exposed leading edge 8 and the exterior side faces of the forward half of the tubes 6 throughout the entire length of the tubes.
  • each shield 9 is contactively embraced, through the entire length, by the inner peripheral faces of the fin apertures 12 and fin flanges 13.
  • each fin 7 Forward perimetrical portions of each fin 7 is doubled back to form a narrow, hem-like reinforcing strip 10, extending slightly rearward of the forward edge of the respective fin flange 13.
  • the fins 7 and the tubes 6 After assembly of the shields 9, the fins 7 and the tubes 6 the contacting areas of all such are solder bonded together to form a rigid, unitary core-unit structure.
  • the tubes 6 and fins 7, for such a radiator-type heat-exchanger are formed from non-ferrous metal such as copper or copper alloy. So it is with a core-unit constructed in accordance with this invention.
  • the shields 9, preferably, are
  • the particulated air-flow through the core-unit in the direction of the arrows of FIGS. 1 and 5, will impinge on the advancing edges of the shields 9 and be deflected into the air stream flow rearwardly through the core unit.
  • the shields 9, being steel, Will Withstand the sand blasting erosion thereof for the life of the radiator as it would be in other types of service not involving such heavy particulated air-flow.
  • a heat-exchanger core-unit of the class described comprising,
  • a heat exchanger core-unit of the class described comprising,

Description

Sept. 22, 1964 w. v. ASTRUP CORE-UNIT FOR VEHICULAR-RADIATOR-TYPE HEAT EXCHANGER AND PROTECTIVE SHIELDS THEREFOR Filed Sept. 24, 1962 INVENTOR. WILLIAM V. ASTRUP ATT Y United States Patent Office 3,149,667 Patented Sept. 22., 1964 3,149,667 CORE-UNIT FOR VEHICULAR-RADIATOR-TYPE HEAT EXCHANGER AND PROTECTIVE SHIELDS THEREFOR William V. Astrup, Racine, Wis., assignor to Young Radiator Company, Racine, Wis., a corporation of Wisconsin Filed Sept. 24, 1962, Ser. No. 225,636 3 Claims. (Cl. 165134) This invention relates to the construction of coreunits for a type of heat-exchanger, commonly referred to as radiator, extensively used with high-powered engines for earth-moving equipment.
The modern construction of motor-vehicle highways involves many types of vehicular equipment for excavating, transporting and spreading earth. Much of the equipment is massive and generally powered by Diesel engines. The cooling system for such vehicular engines involves a radiator through which air is drawn by a highvelocity fan. As a rule these radiators comprise a coreunit spanning and connected to upper and lower tanks. The core-unit comprises two or more rows of transversely-staggered tubes mounting a series of closely-spaced heat-dissipating fins. The tubes usually are of elongated cross-section and disposed with their longer dimension parallel with the air stream.
The fan, driven from the engine, is arranged between the engine and the radiator to cause an air flow inwardly through the core-unit. With the vehicle constantly moving through the dust-laden air it is inevitable that the air flow through the radiator core-unit becomes highly particulated. Such air flow impinging the exposed leading edges of the front row of tubes and fins has the effect of sand blasting these tubes and fins and gradually so abrading them as to produce all-too-frequent leaks. The repair or replacement of leaking radiators is expensive not only by reason of the direct cost but also because of the indirect cost of idle equipment and workmen.
Radiator core-units of this kind usually are made of non-ferrous metals such as copper or copper alloy, primarily for the reason that it is the metal that has the highest heat-transfer capacity and corrosion-resistant ready-solderable material consistent with production costs for material and labor. However, being a comparatively soft metal it is more readily abraded than a harder metal would be. However, harder metals do not have the heat-transfer capacity of the softer metals and are more expensive in material and labor costs. Varied prior attempts to provide protection shields for the front row of these softer-metal tubes has met with limited use I01 one T838011 01 another.
The main objects of this invention therefore, are to provide an improved arrangement of protective shields for the leading edges of the front row of tubes of the conventional vehicular-radiator type of heat-exchanger subject to a particulated air-flow through the core-unit; and to provide an improved abrasion protective shield of this kind which is economical to incorporate into the manufacture of the conventional type of vehicle radiator and which has an exceedingly high endurance against abrasion by even the heaviest particulated air flow through the core-unit.
In the adaptation shown in the accompanying drawmgs:
FIG. 1 is a perspective view of a small section of coreunit wherein the leading edges of the front row of tubes are protected against abrasion by shields constructed in accordance with this invention;
FIG. 2 is an enlarged, end view of one of the protected tubes as viewed from the plane of the line 2-2 of FIG. 1;
FIG. 3 is a side view of the section of the core-unit shown in FIG. 1;
FIG. 4 is a fragmentary, front-end view of a section of the same taken on the plane of the line 44 of FIG. 3; and
FIG. 5 is a reduced, plan view of a section of a doubletube-row core-unit constructed in accordance with this invention.
The essential concept of this invention involves a conventional core-unit for a vehicle-radiator-type heat-exchanger wherein the leading edge of each of the front row of tubes is embraced in an abrasion-protective shield.
A core-unit embodying the foregoing concept comprises a battery of tubes 6 mounting a series of fins 7 with the leading edges 8 of the front row of tubes 6 embraced in protective shields 9. The fragment of coreunit shown in the drawing is illustrative of the general structural arrangement of the tubes 6 and fins 7 for a conventional core-unit for a radiator-type heat-exchanger for motor vehicles.
The tubes 6 in such a radiator, as a rule, are of flat, elongated form and arranged in staggered relationship, as indicated in FIG. 5. The ends 11 of the tubes 6 extend a suflicient distance beyond the upper and lower fins 7 to permit telescopic positioning of the tube ends in registering openings in and bonding to header plates (not here shown) for the upper and lower tanks of the radiator.
The fins 7 are formed with apertures 12 to snugly embrace the tubes 6 and are arranged in closely-spaced relationship to each other. Generally, the fins 7 are formed with flanges 13 around the tube apertures 11 to contactively embrace the tubes 6 and thereby enhance the heat-transfer facility of the tubes 6 to the fins 7. In this development, however, the front row of tube apertures 12 and the flanges 13 have the forward portions thereof enlarged to accommodate the shields 9. Preferably, though not necessarily, these enlarged portions of the front row of apertures 12 and flanges 13 are about half the length of the longer, external dimension of the tubes 6.
The shields 9, as here shown, for such elongated tubes 6, are of U-shaped form and dimensioned in width (crosswise) and depth (front to rear) to snugly embrace the leading edges 8 and the parallel sides of thetubes 6 for approximately half their longer dimension. Obviously, these shields 9 also snugly fit in the enlarged forward portions of the aligned apertures 12 and flanges 13 of the fins 7.
In length (axially of the tubes) the shields 9 are just enough less than the length of the tubes 6 to leave the tube ends 11 exposed for telescopic insertion in and bonding to the header plates (not here shown). Thus, each shield 9, in the completed core-unit, contactively embraces the exposed leading edge 8 and the exterior side faces of the forward half of the tubes 6 throughout the entire length of the tubes. Concurrently, each shield 9 is contactively embraced, through the entire length, by the inner peripheral faces of the fin apertures 12 and fin flanges 13.
Forward perimetrical portions of each fin 7 is doubled back to form a narrow, hem-like reinforcing strip 10, extending slightly rearward of the forward edge of the respective fin flange 13.
After assembly of the shields 9, the fins 7 and the tubes 6 the contacting areas of all such are solder bonded together to form a rigid, unitary core-unit structure.
As hereinbefore explained, the tubes 6 and fins 7, for such a radiator-type heat-exchanger, are formed from non-ferrous metal such as copper or copper alloy. So it is with a core-unit constructed in accordance with this invention. However, the shields 9, preferably, are
formed of a ferrous metal, such as steel, since that metal is more resistant to abrasion than is the non-ferrous metal of the tubes 6.
In use on any vehicular equipment, such as earthmoving equipment, the particulated air-flow through the core-unit, in the direction of the arrows of FIGS. 1 and 5, will impinge on the advancing edges of the shields 9 and be deflected into the air stream flow rearwardly through the core unit. The shields 9, being steel, Will Withstand the sand blasting erosion thereof for the life of the radiator as it would be in other types of service not involving such heavy particulated air-flow.
Variations and modifications in the details and structure and arrangement of the parts may be resorted to Within the spirit and coverage of the appended claims.
I claim:
1. A heat-exchanger core-unit of the class described comprising,
(a) a battery of tubes arranged in parallel relationship,
(b) an arcuate-shaped shield of continuous unbroken area throughout its entire length contactively embracing the entire periphery of the leading edge of each tube throughout substantially the entire length of the tube, and
(c) a stack of heat-dissipating fins arranged on the tubes in closely-spaced position to each other each having a series of tube openings whereby each fin contactively embraces the peripheries of the respective shield and the peripheries of the respective tubes rearwardly of the shields.
2. A heat exchanger core-unit of the class described comprising,
(a) a battery of tubes each of elongated cross-section arranged with the long dimensions parallel,
(b) an arcuate-shaped shield of U-shaped cross-section and of continuous unbroken area throughout its entire length contactively embracing the entire periphery of the leading edge and forward portions of the parallel sides of each tube throughout substantially the entire length of the tube, and
(c) a stack of heat-dissipating fins arranged on the tubes in closely-spaced position to each other each having a series of tube openings of elongated contour With the forward part conformed to the U-shaped shield and the rear part conformed to the shape of the tube, and contactively embracing the peripheries of the respective shields and the peripheries of the respective tubes rearWardly of the shields.
3. A heat-exchanger core-unit of the class described as set forth in claim 2 wherein the fins are structured with flanges disposed transversely to the plane of the fins to contactively embrace the tubes and the forward perimetrical portion of each fin is doubled back upon itself flat against one face of the fin to form a narrow, hem-like reinforcing strip embracive of the forward periphery of the respective fin flange.
References Cited in the file of this patent UNITED STATES PATENTS 1,937,343 Higgins Dec. 7, 1932 1,982,931 Schank et a1. June 17, 1933 2,795,402 Modine Jan. 13, 1951 2,853,279 Switzer Nov. 27, 1953 2,902,264 Schick et al Oct. 24, 1957

Claims (1)

1. A HEAT-EXCHANGER CORE-UNIT OF THE CLASS DESCRIBED COMPRISING, (A) A BATTERY OF TUBES ARRANGED IN PARALLEL RELATIONSHIP, (B) AN ARCUATE-SHAPED SHIELD OF CONTINUOUS UNBROKEN AREA THROUGHOUT ITS ENTIRE LENGTH CONTACTIVELY EMBRACING THE ENTIRE PERIPHERY OF THE LEADING EDGE OF EACH TUBE THROUGHOUT SUBSTANTIALLY THE ENTIRE LENGTH OF THE TUBE, AND (C) A STACK OF HEAT-DISSIPATING FINS ARRANGED ON THE TUBES IN CLOSELY-SPACED POSITION TO EACH OTHER EACH HAVING A SERIES OF TUBE OPENINGS WHEREBY EACH FIN CONTACTIVELY EMBRACES THE PERIPHERIES OF THE RESPECTIVE SHIELD AND THE PERIPHERIES OF THE RESPECTIVE TUBES REARWARDLY OF THE SHIELDS.
US225636A 1962-09-24 1962-09-24 Core-unit for vehicular-radiator-type heat exchanger and protective shields therefor Expired - Lifetime US3149667A (en)

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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3255824A (en) * 1963-12-11 1966-06-14 Fire Guard Corp Fire extinguisher with side mounted cartridge
US3275072A (en) * 1964-08-14 1966-09-27 Int Harvester Co Radiator core guard
US3999600A (en) * 1973-10-24 1976-12-28 Foster Wheeler Corporation Heat transfer shields
US4067384A (en) * 1976-06-17 1978-01-10 Miyakawa Gene K Heat exchanger core assembly for engine cooling system
US4142578A (en) * 1977-09-12 1979-03-06 Exxon Research & Engineering Co. Heat exchanger impingement protection
US4168737A (en) * 1976-11-19 1979-09-25 Kabushiki Kaisha Komatsu Seisakusho Heat exchange recuperator
US4253520A (en) * 1978-10-26 1981-03-03 The Garrett Corporation Heat exchanger construction
EP0061873A2 (en) * 1981-03-27 1982-10-06 Imi Radiators Limited Damage resistant heat exchanger
WO1992008942A1 (en) * 1990-11-16 1992-05-29 Vattenfall Ab A device for protecting condenser tubes
US5467816A (en) * 1993-02-08 1995-11-21 Larinoff; Michael W. Finned tubes for air-cooled steam condensers
US5732768A (en) * 1996-02-26 1998-03-31 Magneti Marelli Climatizzazione S.R.L Condenser for air-conditioning systems for vehicles
US20020134537A1 (en) * 2001-02-07 2002-09-26 Stephen Memory Heat exchanger
US20030141046A1 (en) * 2002-01-15 2003-07-31 Toru Ikeda Heat exchanger
US20100270014A1 (en) * 2009-04-23 2010-10-28 Tsung-Hsien Huang Heat sink with radially arranged radiation fins
CN101943538A (en) * 2009-07-08 2011-01-12 鈤新科技股份有限公司 Cooling fin, preparation method of cooling fin, radiator and preparation method of radiator
EP2280237A1 (en) 2009-07-31 2011-02-02 Cpumate Inc. Heat sink having heat-dissipating fins of large area and method for manufacturing the same
US20110024089A1 (en) * 2009-07-29 2011-02-03 Kuo-Len Lin Heat sink having heat-dissipating fins of large area and method for manufacturing the same
US20140158248A1 (en) * 2012-12-07 2014-06-12 Po-Wen Shih Tube of Radiator
US10407013B1 (en) 2018-07-18 2019-09-10 Denso International America, Inc. Radiator core stone guard
US20190277579A1 (en) * 2018-03-07 2019-09-12 United Technologies Corporation High temperature plate fin heat exchanger
US11774187B2 (en) * 2018-04-19 2023-10-03 Kyungdong Navien Co., Ltd. Heat transfer fin of fin-tube type heat exchanger

Citations (5)

* 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
US1982931A (en) * 1933-06-17 1934-12-04 Mccord Radiator & Mfg Co Radiator core
US2795402A (en) * 1951-01-13 1957-06-11 Modine Mfg Co Fluid conduit structure
US2853279A (en) * 1953-11-27 1958-09-23 Gilbert Associates Heat transfer retarding shields
US2902264A (en) * 1957-10-24 1959-09-01 Allis Chalmers Mfg Co Radiator core for tractor vehicles

Patent Citations (5)

* 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
US1982931A (en) * 1933-06-17 1934-12-04 Mccord Radiator & Mfg Co Radiator core
US2795402A (en) * 1951-01-13 1957-06-11 Modine Mfg Co Fluid conduit structure
US2853279A (en) * 1953-11-27 1958-09-23 Gilbert Associates Heat transfer retarding shields
US2902264A (en) * 1957-10-24 1959-09-01 Allis Chalmers Mfg Co Radiator core for tractor vehicles

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3255824A (en) * 1963-12-11 1966-06-14 Fire Guard Corp Fire extinguisher with side mounted cartridge
US3275072A (en) * 1964-08-14 1966-09-27 Int Harvester Co Radiator core guard
US3999600A (en) * 1973-10-24 1976-12-28 Foster Wheeler Corporation Heat transfer shields
US4067384A (en) * 1976-06-17 1978-01-10 Miyakawa Gene K Heat exchanger core assembly for engine cooling system
US4168737A (en) * 1976-11-19 1979-09-25 Kabushiki Kaisha Komatsu Seisakusho Heat exchange recuperator
US4142578A (en) * 1977-09-12 1979-03-06 Exxon Research & Engineering Co. Heat exchanger impingement protection
US4253520A (en) * 1978-10-26 1981-03-03 The Garrett Corporation Heat exchanger construction
EP0061873A2 (en) * 1981-03-27 1982-10-06 Imi Radiators Limited Damage resistant heat exchanger
EP0061873A3 (en) * 1981-03-27 1983-04-20 Imi Radiators Limited Damage resistant heat exchanger
WO1992008942A1 (en) * 1990-11-16 1992-05-29 Vattenfall Ab A device for protecting condenser tubes
US5467816A (en) * 1993-02-08 1995-11-21 Larinoff; Michael W. Finned tubes for air-cooled steam condensers
US5732768A (en) * 1996-02-26 1998-03-31 Magneti Marelli Climatizzazione S.R.L Condenser for air-conditioning systems for vehicles
US20020134537A1 (en) * 2001-02-07 2002-09-26 Stephen Memory Heat exchanger
US6964296B2 (en) * 2001-02-07 2005-11-15 Modine Manufacturing Company Heat exchanger
US20030141046A1 (en) * 2002-01-15 2003-07-31 Toru Ikeda Heat exchanger
US20100270014A1 (en) * 2009-04-23 2010-10-28 Tsung-Hsien Huang Heat sink with radially arranged radiation fins
CN101943538B (en) * 2009-07-08 2015-10-14 鈤新科技股份有限公司 Radiating fin and method for making thereof and radiator and method for making thereof
CN101943538A (en) * 2009-07-08 2011-01-12 鈤新科技股份有限公司 Cooling fin, preparation method of cooling fin, radiator and preparation method of radiator
US20110024089A1 (en) * 2009-07-29 2011-02-03 Kuo-Len Lin Heat sink having heat-dissipating fins of large area and method for manufacturing the same
US8459335B2 (en) 2009-07-29 2013-06-11 Cpumate Inc Heat sink having heat-dissipating fins of large area and method for manufacturing the same
EP2280237A1 (en) 2009-07-31 2011-02-02 Cpumate Inc. Heat sink having heat-dissipating fins of large area and method for manufacturing the same
US20140158248A1 (en) * 2012-12-07 2014-06-12 Po-Wen Shih Tube of Radiator
US8905084B2 (en) * 2012-12-07 2014-12-09 Cryomax Cooling System Corp. Tube of radiator
US20190277579A1 (en) * 2018-03-07 2019-09-12 United Technologies Corporation High temperature plate fin heat exchanger
US11774187B2 (en) * 2018-04-19 2023-10-03 Kyungdong Navien Co., Ltd. Heat transfer fin of fin-tube type heat exchanger
US10407013B1 (en) 2018-07-18 2019-09-10 Denso International America, Inc. Radiator core stone guard

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