US20030094260A1 - Heat exchanger tube with stone protection appendage - Google Patents

Heat exchanger tube with stone protection appendage Download PDF

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Publication number
US20030094260A1
US20030094260A1 US09/989,369 US98936901A US2003094260A1 US 20030094260 A1 US20030094260 A1 US 20030094260A1 US 98936901 A US98936901 A US 98936901A US 2003094260 A1 US2003094260 A1 US 2003094260A1
Authority
US
United States
Prior art keywords
appendage
heat exchanger
exchanger tube
appendages
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.)
Abandoned
Application number
US09/989,369
Other languages
English (en)
Inventor
Gregory Whitlow
Wen Yu
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.)
Eastman Kodak Co
Visteon Global Technologies Inc
Original Assignee
Eastman Kodak Co
Visteon Global Technologies 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 Eastman Kodak Co, Visteon Global Technologies Inc filed Critical Eastman Kodak Co
Priority to US09/989,369 priority Critical patent/US20030094260A1/en
Assigned to EASTMAN KODAK COMPANY reassignment EASTMAN KODAK COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CARLTON, DONN B., GHOSH, SYAMAL K., CHATTERJEE, DILIP K., VAN SLYKE, STEVEN A.
Assigned to VISTEON GLOBAL TECHNOLOGIES, INC. reassignment VISTEON GLOBAL TECHNOLOGIES, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WHITLOW, GREGORY A., YU, WEN F.
Priority to DE10218094A priority patent/DE10218094A1/de
Priority to GB0211471A priority patent/GB2382133B/en
Publication of US20030094260A1 publication Critical patent/US20030094260A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00—Reinforcing means
    • F28F2225/04—Reinforcing means for conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction

Definitions

  • the present invention relates generally to a heat exchanger tube for use in a heat exchanger and, more particularly, to a heat exchanger tube with a stone protection appendage.
  • FIG. 1 shows a cross-sectional view of a conventional heat exchanger flat tube of this kind.
  • the heat exchanger tube 11 is made by extruding an aluminum article.
  • the tube 11 has a peripheral wall 12 having an elongated circular cross-sectional shape and a plurality of divisional walls 13 , 13 a connecting flat wall portions 12 a of the peripheral wall 12 .
  • the divisional walls 13 divide an inside space of the tube 11 to form a plurality of unit passages 14 , 15 arranged in a lateral direction of the tube 11 .
  • Each divisional wall 13 , 13 a has a constant thickness along the height thereof so that a contact area with the heat exchanging medium can be enlarged, thereby enhancing the heat exchanging performance of the tube 11 .
  • the tube 11 includes outermost unit passages 14 and intermediate unit passages 15 located between the outermost unit passages 14 .
  • Each intermediate unit passage 15 has a rectangular cross-sectional shape
  • each outermost unit passage 14 has a semi-circular cross-sectional shape at a lateral outside portion and a rectangular cross-sectional shape at lateral inside portion.
  • each portion of the tube 11 i.e., the peripheral wall 12 and the divisional walls 13 , 13 a , are formed to be as thin as possible for the purpose of lightening the weight of the tube 11 .
  • tube 11 when the above-mentioned tube 11 is used in a condenser mounted in an automobile, tube 11 may sometimes become damaged and cause leakage of the heat exchanging medium when a stone, or the like, hits the tube 11 while the automobile is moving.
  • Two objects of the present invention are to provide both protection of the tube body against a stone or the like which hits the tube, and an excellent heat exchanging performance by keeping a large contact area with a heat exchange medium.
  • the above-referenced objects can be achieved for use in a vehicle by a heat exchanger tube extending in an axial direction that has an end.
  • the end has a first and second appendage attached to it, such that, the first appendage and the second appendage are spaced from one another and the second appendage does not form an enclosed space with the first appendage.
  • the above-referenced objects can be achieved for use in an automotive air conditioner by a heat exchanger tube extending in an axial direction that has an end.
  • the end has a first and second appendage attached to it, such that, the first appendage and the second appendage are spaced from one another and the second appendage does not form an enclosed space with the first appendage.
  • each of the above aspects of the present invention protects the tube's body from being damaged by the use of the nose-tip-appendage. So that when an object, such as a stone, hits the tube, the nose-tip-appendage would collapse, absorbing the energy of the incoming object.
  • the present invention may be used in an automotive air conditioner, the present invention may also be used in a radiator oil cooler and, as stated above, the present invention may also be use in a residential heat exchanger.
  • FIG. 1 shows a cross-sectional view of a known heat exchanger tube
  • FIG. 2A shows a cross-sectional view of a first embodiment of a heat exchanger according to the present invention
  • FIG. 2B shows an enlarged cross-sectional view of the heat exchanger tube of FIG. 2A
  • FIG. 3 shows a cross-sectional view of a second embodiment of the heat exchanger tube
  • FIG. 4 shows a cross-sectional view of a third embodiment of a heat exchanger tube according to the present invention
  • FIG. 5 shows an alternate configuration of the heat exchanger tube of FIG. 4, according to the present invention
  • FIG. 6 shows front view of an embodiment a heat exchanger that includes one of the heat exchanger tubes of FIGS. 2 - 5 according to the present invention
  • FIG. 7A shows an embodiment of an automobile with a heat exchanger having one of the heat exchanger tubes of FIGS. 2 - 5 according to the present invention.
  • FIG. 7B shows a residential home with an air conditioner having one of the heat exchanger tubes of FIGS. 2 - 5 according to the present invention.
  • FIG. 6 shows a heat exchanger of a so-called multi-flow type that includes a plurality of multi-bored flat tubes 1 each having a certain length, fins 2 interposed between the tubes 1 , and a pair of hollow headers 3 to which the ends of the tubes 1 are connected.
  • Each header 3 is divided by a partition 4 .
  • medium flows into the right hand header 3 through an inlet 5 connected to the upper portion of the header, passes through the left hand header 3 through an outlet 6 connected to the lower portion of the header 3 .
  • FIG. 2A shows an embodiment of a heat exchanger tube 20 of used in a vehicle.
  • the heat exchanger tube 20 is an aluminum extruded article. As shown in FIGS. 2A and 2B the heat exchanger tube 20 extends in an axial direction and has nose ends 21 .
  • the typical length L of the heat exchanger tube 20 is designed to be in the range of 10.0 mm to 25.0 mm.
  • a peripheral wall 22 is formed to have an elongated circular cross-sectional shape.
  • a plurality of divisional walls 23 are provided in the heat exchanger tube 20 to form a plurality of compartments 24 , 24 a arranged in the axial direction of the heat exchanger tube 20 .
  • the divisional walls 23 connect flat wall portions 25 of the peripheral walls 22 with each other at a certain distance.
  • the thickness t 1 of divisional walls 23 can be designed to be in the range of 0.15 mm to 0.45 mm while the thickness t 2 of the flat wall portions 25 is designed to be in the range of 0.27 mm to 0.60 mm.
  • each of the outermost compartments 24 a is formed to be a circumferentially smooth curved shape in cross-section.
  • each compartment 24 a is formed to have a rounded, or semicircular, inner surface at the outermost compartment side and a rectangle at the other side.
  • the width cw of compartment 24 a is typically from 0.30 mm to 3.0 mm.
  • the height ch of compartment 24 a is typically from 0.6 mm to 3.5 mm.
  • the compartment 24 a may be formed to be an elongated circular cross-sectional shape, an elliptical shape or a perfect circular shape.
  • the plurality of inner compartments 24 are typically formed to be rectangular in shape in cross-section.
  • the width w of an inner compartment 24 is typically designed to be 1.4 mm.
  • the inner compartments 24 are not constrained to be rectangular in shape in cross-section.
  • the inner compartments 24 can be designed to have a triangular, a trapezoidal, circular, or a star shape.
  • a particular advantage of the present invention, in any embodiment, is that design of a major portion of the heat exchanger tube 20 is irrelevant as described below.
  • each of the nose ends 21 Attached to each of the nose ends 21 are appendages 26 a , 26 b .
  • Each of the appendages 26 a , 26 b are spaced from one another such that appendage 26 a and appendage 26 b do not form an enclosed space with one another.
  • each of the appendages 26 a , 26 b are substantially straight and are integrally formed from the flat wall portions 25 .
  • the appendages 26 a , 26 b are also substantially parallel to each other.
  • the thickness t 3 of each of the appendages 26 a , 26 b is designed to be from 0.2 mm to 0.5 mm. While the thickness t 4 of each of the nose ends 21 is typically in the range of 0.30 mm to 0.65 mm.
  • Each of the appendages 26 a , 26 b extends 0.5 mm from nose ends 21 .
  • the height h, as measured from the top of appendage 26 a to the bottom of appendage 26 b is designed to be 2.01 ⁇ 0.04 mm.
  • the heat exchanger tube 20 When the above-mentioned heat exchanger tube 20 is used in a condenser for an automobile air conditioner, the heat exchanger tube 20 may be hit by an object, such as a stone, that is passed through a radiator grill of the automobile. In this case, however, the appendages 26 a 26 b prevent the nose ends 21 from being damaged because typically the appendages 26 a , 26 b on the windward side of the heat exchanger would be hit first and collapse, absorbing the energy of the incoming stone, therefore, protecting heat exchanger tube 20 .
  • an object such as a stone
  • FIG. 3 shows another embodiment of heat exchanger tube 20 .
  • the straight appendages 26 a , 26 b of FIG. 2A have been replaced by appendages 31 .
  • Appendages 31 are attached to the center of nose ends 21 .
  • appendages 31 are substantially straight and are integrally formed from the nose ends 21 .
  • Appendages 31 extend 0.5 mm from the tip of nose ends 21 and typically have a thickness t 5 of 0.44 mm.
  • the heat exchanger tube 20 When the above-mentioned heat exchanger tube 20 is used in a condenser for an automobile air conditioner, the heat exchanger tube 20 may be hit by an object, such as a stone, that is passed through a radiator grill of the automobile. In this case, however, the appendages 31 prevent the nose ends 21 from being damaged because typically the appendage 31 on the windward side of the heat exchanger would be hit first and collapse, absorbing the energy of the incoming object, therefore, protecting heat exchanger tube 20 .
  • an object such as a stone
  • FIG. 4 shows another embodiment of heat exchanger tube 20 , according to the present invention.
  • the straight appendages 26 a , 26 b of FIG. 2A have been replaced by appendages 41 a , 41 b , respectively.
  • Appendages 41 a , 41 b are attached to nose ends 21 .
  • Each of the appendages 41 a , 41 b are spaced from one another such that appendage 41 a and appendage 41 b do not form an enclosed space with one another.
  • each of the appendages 41 a , 41 b are curved with a radius of curvature of typically between 0.6 and 1.5 and are integrally formed from the flat wall portions 25 .
  • the appendages 41 a , 41 b also face each other and end in a point.
  • Each of the appendages 41 a , 41 b extend 0.5 mm from nose ends 21 .
  • the space S between each appendage 41 a , 41 b is preferably 1.0 mm.
  • the heat exchanger tube 20 When the above-mentioned heat exchanger tube 20 is used in a condenser for an automobile air conditioner, the heat exchanger tube 20 may be hit by an object, such as a stone, that is passed through a radiator grill of the automobile. In this case, however, the appendages 41 a , 41 b prevent the nose ends 21 from being damaged because typically the appendages 41 a , 41 b on the windward side of the heat exchanger would be hit first and collapse, absorbing the energy of the incoming object, therefore, protecting heat exchanger tube 20 .
  • This embodiment of the present invention provides the superior protection for heat exchanger tube 20 because of the size of space S, stones greater than or equal to 1.0 mm cannot damage the heat exchanger tube 20 .
  • FIG. 5 shows an alternate configuration of the embodiment as shown in FIG. 4 of heat exchanger tube 20 , according to the present invention.
  • the straight appendages 26 a , 26 b of FIG. 2A have been replaced by appendages 51 a , 51 b.
  • Appendages 51 a , 51 b are attached to nose ends 21 .
  • Each of the appendages 51 a , 51 b are spaces from one another such that appendage 51 a and appendage 51 b do not form an enclosed space with one another.
  • each of the appendages 51 a , 51 b are curved with a radius of curvature of typically between 0.6 and 1.5 and are integrally formed from the flat wall portions 25 .
  • the appendages 51 a , 51 b also face each other and end in a flat part 52 .
  • Each of the appendages 51 a , 541 b extend 0.5 mm from nose ends 21 .
  • the space S between each appendage 51 a , 51 b is preferably 0.79 mm.
  • the heat exchanger tube 20 When the above-mentioned heat exchanger tube 20 is used in a condenser for an automobile air conditioner, the heat exchanger tube 20 may be hit by an object, such as a stone, that is passed through a radiator grill of the automobile. In this case, however, the appendages 41 a , 41 b prevent the nose ends 21 from being damaged because typically the appendages 41 a , 41 b on the windward side of the heat exchanger would be hit first and collapse, absorbing the energy of the incoming object, therefore, protecting heat exchanger tube 20 .
  • This embodiment of the present invention provides the maximum protection for heat exchanger tube 20 because of the size of space S, stones greater than or equal to 0.79 mm cannot damage the heat exchanger tube 20 .
  • the heat exchanger tubes of FIGS. 2 - 5 and the heat exchanger 7 of FIG. 6 can be installed in an automobile 70 , where the heat exchanger 7 is part of the cooling system and/or air conditioning system of the automobile.
  • the heat exchanger tubes of FIGS. 2 - 5 and heat exchanger 7 of FIG. 6 can be installed in an air conditioning unit positioned within a residence 71 of FIG. 7B.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US09/989,369 2001-11-19 2001-11-19 Heat exchanger tube with stone protection appendage Abandoned US20030094260A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US09/989,369 US20030094260A1 (en) 2001-11-19 2001-11-19 Heat exchanger tube with stone protection appendage
DE10218094A DE10218094A1 (de) 2001-11-19 2002-04-23 Wärmetauscherrohr mit Steinschutzansatz
GB0211471A GB2382133B (en) 2001-11-19 2002-05-20 Heat exchanger tube with stone protection appendage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/989,369 US20030094260A1 (en) 2001-11-19 2001-11-19 Heat exchanger tube with stone protection appendage

Publications (1)

Publication Number Publication Date
US20030094260A1 true US20030094260A1 (en) 2003-05-22

Family

ID=25535055

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/989,369 Abandoned US20030094260A1 (en) 2001-11-19 2001-11-19 Heat exchanger tube with stone protection appendage

Country Status (3)

Country Link
US (1) US20030094260A1 (de)
DE (1) DE10218094A1 (de)
GB (1) GB2382133B (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050194124A1 (en) * 2004-02-13 2005-09-08 Behr Gmbh & Co. Kg Heat exchanger, in particular oil cooler for a motor vehicle
US20070071920A1 (en) * 2005-09-29 2007-03-29 Denso Corporation Heat exchanger tube and heat exchanger
US20070080009A1 (en) * 2005-10-12 2007-04-12 Kowalski Jerome E A/C condenser damage protection device
US20090126916A1 (en) * 2006-04-25 2009-05-21 Calsonic Kansei Corporation Protecting structure of heat exchanger for motor vehicle
US20160238329A1 (en) * 2013-09-20 2016-08-18 Denso Corporation Heat exchanger
JPWO2017072945A1 (ja) * 2015-10-30 2018-05-31 三菱電機株式会社 熱交換器及び空気調和機
US20200088474A1 (en) * 2018-09-13 2020-03-19 Denso International America, Inc. Impact resistant structural radiator tube
WO2021124390A1 (ja) * 2019-12-16 2021-06-24 三菱電機株式会社 熱交換器、熱交換器ユニット、及び冷凍サイクル装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008113540A2 (de) 2007-03-16 2008-09-25 Behr Gmbh & Co. Kg Strömungskanal, wärmetauscher, abgasrückführsystem, ladeluft-zuführsystem, verwendung eines wärmetauschers
JP5081881B2 (ja) * 2009-09-15 2012-11-28 日立アプライアンス株式会社 空気調和機
DE102018202652A1 (de) 2018-02-22 2019-08-22 Volkswagen Aktiengesellschaft Wärmetauscherrohr und Wärmetauscher mit zumindest einem derartigen Wärmetauscherrohr

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
US3692105A (en) * 1970-09-02 1972-09-19 Peerless Of America Heat exchangers
GB1390781A (en) * 1972-03-02 1975-04-16 Noranda Metal Ind Heat-exchange tubing
GB1390782A (en) * 1972-03-02 1975-04-16 Noranda Metal Ind Heat-exchange tubing
NO155069C (no) * 1984-10-17 1987-02-04 Norsk Hydro As Hulprofil, dens anvendelse i varmevekslere og fremgangsmaate ved fremstilling.
US4815532A (en) * 1986-02-28 1989-03-28 Showa Aluminum Kabushiki Kaisha Stack type heat exchanger
JPS62202999A (ja) * 1986-02-28 1987-09-07 Showa Alum Corp 積層型熱交換器
ATE197501T1 (de) * 1986-07-29 2000-11-11 Showa Aluminium Co Ltd Kondensator
JPH10238986A (ja) * 1997-02-26 1998-09-11 Denso Corp 積層型熱交換器
JP4122608B2 (ja) * 1998-12-10 2008-07-23 株式会社デンソー 冷媒蒸発器

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7201216B2 (en) * 2004-02-13 2007-04-10 Behr Gmbh & Co. Kg Heat exchanger, in particular oil cooler for a motor vehicle
US20050194124A1 (en) * 2004-02-13 2005-09-08 Behr Gmbh & Co. Kg Heat exchanger, in particular oil cooler for a motor vehicle
EP1770347A3 (de) * 2005-09-29 2012-03-28 Denso Corporation Wärmetauscherrohr und Wärmetauscher
US20070071920A1 (en) * 2005-09-29 2007-03-29 Denso Corporation Heat exchanger tube and heat exchanger
EP2645041A3 (de) * 2005-09-29 2013-11-13 Denso Corporation Wärmetauscherrohr und Wärmetauscher
EP2645041A2 (de) * 2005-09-29 2013-10-02 Denso Corporation Wärmetauscherrohr und Wärmetauscher
US20070080009A1 (en) * 2005-10-12 2007-04-12 Kowalski Jerome E A/C condenser damage protection device
US7726428B2 (en) 2005-10-12 2010-06-01 Chrysler Group Llc A/C condenser damage protection device
US20090126916A1 (en) * 2006-04-25 2009-05-21 Calsonic Kansei Corporation Protecting structure of heat exchanger for motor vehicle
US20160238329A1 (en) * 2013-09-20 2016-08-18 Denso Corporation Heat exchanger
JPWO2017072945A1 (ja) * 2015-10-30 2018-05-31 三菱電機株式会社 熱交換器及び空気調和機
US20200088474A1 (en) * 2018-09-13 2020-03-19 Denso International America, Inc. Impact resistant structural radiator tube
WO2021124390A1 (ja) * 2019-12-16 2021-06-24 三菱電機株式会社 熱交換器、熱交換器ユニット、及び冷凍サイクル装置
JPWO2021124390A1 (de) * 2019-12-16 2021-06-24
JP7330294B2 (ja) 2019-12-16 2023-08-21 三菱電機株式会社 熱交換器、熱交換器ユニット、及び冷凍サイクル装置

Also Published As

Publication number Publication date
DE10218094A1 (de) 2003-06-05
GB0211471D0 (en) 2002-06-26
GB2382133A (en) 2003-05-21
GB2382133B (en) 2004-06-16

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Legal Events

Date Code Title Description
AS Assignment

Owner name: EASTMAN KODAK COMPANY, NEW YORK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:VAN SLYKE, STEVEN A.;CHATTERJEE, DILIP K.;GHOSH, SYAMAL K.;AND OTHERS;REEL/FRAME:012702/0636;SIGNING DATES FROM 20011107 TO 20011112

AS Assignment

Owner name: VISTEON GLOBAL TECHNOLOGIES, INC., MICHIGAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WHITLOW, GREGORY A.;YU, WEN F.;REEL/FRAME:012815/0934

Effective date: 20011127

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION