US20220373270A1 - Heat exchange promotion member and heat exchanger - Google Patents

Heat exchange promotion member and heat exchanger Download PDF

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Publication number
US20220373270A1
US20220373270A1 US17/629,887 US202017629887A US2022373270A1 US 20220373270 A1 US20220373270 A1 US 20220373270A1 US 202017629887 A US202017629887 A US 202017629887A US 2022373270 A1 US2022373270 A1 US 2022373270A1
Authority
US
United States
Prior art keywords
heat
heat transfer
fluid
raised
heat exchanger
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
US17/629,887
Other languages
English (en)
Inventor
Noboru Otomo
Ken Yamamoto
Kenichi Morimoto
Yuji Suzuki
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.)
Denso Corp
University of Tokyo NUC
Atago Seisakusho Co Ltd
Original Assignee
Denso Corp
University of Tokyo NUC
Atago Seisakusho Co Ltd
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 Denso Corp, University of Tokyo NUC, Atago Seisakusho Co Ltd filed Critical Denso Corp
Assigned to THE UNIVERSITY OF TOKYO, DENSO CORPORATION, Atago Manufacturing Co., Ltd. reassignment THE UNIVERSITY OF TOKYO ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YAMAMOTO, KEN, MORIMOTO, KENICHI, OTOMO, NOBORU, SUZUKI, YUJI
Publication of US20220373270A1 publication Critical patent/US20220373270A1/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
    • F28F1/34—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 obliquely
    • 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
    • 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
    • F28F1/325—Fins with openings
    • 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
    • F28D1/03—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 plate-like or laminated conduits
    • 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
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • F28F3/027—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/046—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being linear, e.g. corrugations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/04—Assemblies of fins having different features, e.g. with different fin densities

Definitions

  • Patent Literature 3 Japanese Patent Application Publication No. Hei 2-309195
  • Patent Literature 8 Japanese Patent No. 5077926
  • an angle at which the raised part is slanted from a direction orthogonal to a flow of the fluid is from at least 30° to not greater than 80°.
  • a width of the raised part is from at least 0.6 mm to not greater than 4.5 mm. According to such a heat exchange promotion member of the present invention in which the raised part has a width within the above range, suppression of flow resistance and improvement in heat transfer rate can both be achieved at a high level.
  • FIG. 1A is a view of the heat exchanger 10 seen in the Y direction
  • FIG. 1B is a view of the heat exchanger 10 seen in the Z direction.
  • a fluid is flowing in the X direction.
  • Various kinds can be used as the fluid to exchange heat with the heat dissipation fins 14 , including a liquid such as water or a gas such as air. Also, various kinds can be used as the heat medium that flows through the inside of the heat transfer tubes 15 , including a gas such as air, a liquid such as water, or a refrigerant used in a refrigeration cycle such as a vapor compression refrigeration cycle.
  • the heat dissipation fin 14 is a heat exchange promotion member that promotes heat exchange between the fluid and the heat medium described above. To promote heat exchange further, the heat dissipation fin 14 has the raised parts 13 formed thereat.
  • the raised parts 13 are portions formed by protruding part of the heat dissipation fin 14 in the +Y direction. As a whole, the raised part 13 forms a meandering wall parallel to the Z direction, which is a direction orthogonal to the X direction which is the flowing direction in which the fluid flows. Locally, the raised part 13 extends obliquely relative to the Z direction. Specifically, the raised part 13 alternately has a slanted portion where a +Z-side portion thereof is slanted toward the +X side and a slanted portion where a +Z-side portion thereof is slanted toward the ⁇ X side. The raised part 13 is formed continuously from the +Z-side end portion to the ⁇ Z-side end portion of the heat dissipation fin 14 .
  • the horizontal axis represents the Reynolds number
  • the vertical axis represents the f-factor.
  • the solid line indicates the characteristics of a plane fin
  • the loosely-dotted line indicates the characteristics of a louvered fin
  • the densely-dotted line indicates the characteristics of a slitted fin
  • the dash-dot line indicates the characteristics of a wavy fin
  • the dash-dot-dot line indicates the characteristics of a fin having dimples formed therein.
  • an increase in the j-factor can be 107% and an increase in the f-factor can be only 78%, compared to those of the plane fin.
  • an increase in pressure loss can be suppressed while improving heat transfer performance.
  • heat exchange can be performed efficiently with low operational energy.
  • a heat exchanger using the heat dissipation fin 14 according to the present embodiment can reduce frosting and allows easy defrosting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US17/629,887 2019-07-26 2020-09-23 Heat exchange promotion member and heat exchanger Abandoned US20220373270A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2019-137663 2019-07-26
JP2019137663 2019-07-26
PCT/JP2020/035727 WO2021020592A1 (ja) 2019-07-26 2020-09-23 熱交換促進部材および熱交換器

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/035727 A-371-Of-International WO2021020592A1 (ja) 2019-07-26 2020-09-23 熱交換促進部材および熱交換器

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/908,257 Continuation US12529529B2 (en) 2019-07-26 2024-10-07 Heat exchange promotion member and heat exchanger

Publications (1)

Publication Number Publication Date
US20220373270A1 true US20220373270A1 (en) 2022-11-24

Family

ID=74228985

Family Applications (2)

Application Number Title Priority Date Filing Date
US17/629,887 Abandoned US20220373270A1 (en) 2019-07-26 2020-09-23 Heat exchange promotion member and heat exchanger
US18/908,257 Active US12529529B2 (en) 2019-07-26 2024-10-07 Heat exchange promotion member and heat exchanger

Family Applications After (1)

Application Number Title Priority Date Filing Date
US18/908,257 Active US12529529B2 (en) 2019-07-26 2024-10-07 Heat exchange promotion member and heat exchanger

Country Status (4)

Country Link
US (2) US20220373270A1 (https=)
JP (1) JP7569524B2 (https=)
CN (1) CN114556041B (https=)
WO (1) WO2021020592A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12523428B2 (en) * 2021-09-27 2026-01-13 Zte Corporation Heat dissipation assembly and heat dissipater

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080264098A1 (en) * 2005-07-29 2008-10-30 The University Of Tokyo Heat Exchanger, Air Conditioning Device Equipped with Heat Exchanger, and Air Property Converter
US7475719B2 (en) * 2006-12-14 2009-01-13 Evapco, Inc. High-frequency, low-amplitude corrugated fin for a heat exchanger coil assembly
US9080819B2 (en) * 2011-10-05 2015-07-14 T.Rad Co., Ltd. Folded heat exchanger with V-shaped convex portions

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US7475719B2 (en) * 2006-12-14 2009-01-13 Evapco, Inc. High-frequency, low-amplitude corrugated fin for a heat exchanger coil assembly
US9080819B2 (en) * 2011-10-05 2015-07-14 T.Rad Co., Ltd. Folded heat exchanger with V-shaped convex portions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12523428B2 (en) * 2021-09-27 2026-01-13 Zte Corporation Heat dissipation assembly and heat dissipater

Also Published As

Publication number Publication date
WO2021020592A1 (ja) 2021-02-04
JP7569524B2 (ja) 2024-10-18
US20250027727A1 (en) 2025-01-23
CN114556041B (zh) 2024-06-25
US12529529B2 (en) 2026-01-20
CN114556041A (zh) 2022-05-27
JPWO2021020592A1 (https=) 2021-02-04

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