WO2020062722A1 - Ailette et échangeur de chaleur doté de ladite ailette - Google Patents

Ailette et échangeur de chaleur doté de ladite ailette Download PDF

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Publication number
WO2020062722A1
WO2020062722A1 PCT/CN2019/071954 CN2019071954W WO2020062722A1 WO 2020062722 A1 WO2020062722 A1 WO 2020062722A1 CN 2019071954 W CN2019071954 W CN 2019071954W WO 2020062722 A1 WO2020062722 A1 WO 2020062722A1
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WO
WIPO (PCT)
Prior art keywords
fin
window
opening
flat tube
fins
Prior art date
Application number
PCT/CN2019/071954
Other languages
English (en)
Chinese (zh)
Inventor
朱守朝
张有林
薛震
吴迎文
Original Assignee
珠海格力电器股份有限公司
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 珠海格力电器股份有限公司 filed Critical 珠海格力电器股份有限公司
Publication of WO2020062722A1 publication Critical patent/WO2020062722A1/fr

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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
    • F28F1/24—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
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/08—Fins with openings, e.g. louvers
    • 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
    • F28F2215/10—Secondary fins, e.g. projections or recesses on main fins

Definitions

  • the invention relates to the technical field of heat exchange, in particular to a fin and a heat exchanger having the same.
  • the micro-channel heat exchanger is a new type of high-efficiency heat exchanger, which has the advantages of high heat transfer efficiency, small size, light weight, and low charge.
  • the fins of the traditional single-cooled micro-channel heat exchanger are Wavy shape, then brazed between the two flat tubes above and below.
  • An object of the present invention is to provide a fin and a heat exchanger having the same, which can extend the flow path of the air flow, improve the heat exchange efficiency of the heat exchanger, and ensure the uniformity of gas heat exchange.
  • a fin has an upwind side and an opposite downwind side.
  • the fin is provided with one or more flat tube grooves, and the flat tube grooves are used to install flat tubes.
  • the upwind side extends toward the downwind side;
  • the flat tube groove divides the fin into a plurality of fin units, and each of the fin units is provided with one or more flow guiding structures that guide the gas flowing through one side of the fins Circulate through the fins to the other side of the fins.
  • the fins are further provided with positioning support pieces for stacking the fins to form a sheet pitch;
  • the height of the flow guide structure protruding from the fin is H1
  • the height of the positioning support piece protruding from the fin is H
  • the H1 is greater than or equal to one-third H and less than or equal to one-third Second
  • the positioning support sheet is used to determine the distance between the fins when they are stacked to prevent the diversion structure from affecting the assembly of the fins.
  • the above-mentioned flow guiding structure is a window opening cut out by the fin unit, and the air inlet of the window opening faces the windward side.
  • the opening window is approximately rectangular and is cut and bent relative to the fins.
  • the opening window changes a part of the gas flow path from the surface of the fins.
  • the opening window faces the leeward side.
  • One edge is a bent edge, and the two sides adjacent to the opening window and the bending edge are connected to the fins.
  • the side of the opening window facing the upwind side forms an air inlet with the fins, and the air flows from the opening of the opening window.
  • the air inlet enters through the fins and flows to the other side of the fins.
  • the window opening sheet includes an upper opening sheet and a lower opening sheet
  • the fin includes an upper surface and a lower surface
  • the upper opening window is cut to face the upper surface side of the fin, and the lower opening window is cut to face the lower surface side of the fin.
  • each of the fin units is provided with a plurality of guide structures arranged along the extending direction of the flat tube groove;
  • the opening interval between the upper opening window and its adjacent lower opening window facing to the windward side is L3, and the opening length of the upper opening window in the extending direction of the flat tube groove is L2;
  • the L3 is less than or equal to L2.
  • an opening interval between the upper opening window and an adjacent lower opening window facing the leeward side is L1
  • a window opening length of the lower opening window in the extending direction of the flat tube groove is L4;
  • L1 or L3 is less than or equal to L4 or L2.
  • an included angle between the upper opening window sheet and the fin facing the windward side is A, and the included angle A is 20 ° or more and 45 ° or less.
  • an included angle between the lower opening window sheet and the fin facing the windward side is B, and the included angle B is 20 ° or more and 45 ° or less.
  • each of the fin unit is provided with a plurality of window openings arranged along the extending direction of the flat tube groove, and the cut-ups of the window openings face the same side of the fins.
  • the window opening length of the window opening sheet in the direction in which the flat tube groove extends is L5, and the opening distance between adjacent window opening sheets in the direction in which the flat tube groove extends is L6, and L6 is less than or equal to L5 .
  • an included angle between the window opening sheet and the fin facing the windward side is C, and the included angle C is 20 ° or more and 45 ° or less.
  • a heat exchanger includes a flat tube and the aforementioned fins.
  • the flow guide structure changes a part of the gas circulation path from the surface of the fin, and the flow guide structure guides the air flow from one side of the fin through the fin to the other side of the fin, effectively extending
  • the flow path of the air flow is improved, the heat exchange efficiency is improved, and the heat exchange uniformity of the heat exchanger is ensured.
  • FIG. 1 is a schematic view of a three-dimensional structure of a fin according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic cross-sectional structure diagram of a fin according to Embodiment 1 of the present invention.
  • FIG. 3 is a schematic view of a fin guide structure according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic diagram of a fin and a flat pipe installation structure according to Embodiment 1 of the present invention.
  • FIG. 5 is a schematic view of a three-dimensional structure of a fin according to Embodiment 2 of the present invention.
  • FIG. 6 is a schematic diagram of a gas circulation structure according to Embodiment 2 of the present invention.
  • FIG. 7 is a schematic diagram of a fin and a flat tube installation structure according to Embodiment 2 of the present invention.
  • Icons 1. Upwind side; 2. Downwind side; 3. Flat tube groove; 4. Positioning support piece; 41. First support piece; 42; Second support piece; 5. Fin unit; 51. Opening window; 52, upper surface; 53, lower surface; 511, upper opening window; 512, lower opening window; 6, reinforcing protrusions; 7, reinforcing ribs; 8, flanging; 9, flat tube.
  • horizontal and vertical do not mean that the component is required to be absolutely horizontal or drooping, but may be slightly inclined.
  • horizontal simply means that its direction is more horizontal than “vertical”, which does not mean that the structure must be completely horizontal, but it can be tilted slightly.
  • this embodiment provides a fin and a heat exchanger having the same.
  • the fin has an upwind side 1 and an opposite downwind side 2.
  • the fin is provided with one or more flat tube grooves 3.
  • the pipe slot 3 is used to install the flat pipe 9.
  • the flat pipe slot 3 extends from the upwind side 1 to the downwind side 2.
  • the slot of the flat pipe slot 3 is located on the upwind side 1.
  • the ribs 7 are provided on both sides of the slot.
  • the flat pipe slot 3 Also provided with flanging 8.
  • the flat tube groove 3 divides the fins into a plurality of fin units 5, and each fin unit 5 is provided with one or more flow guiding structures.
  • the flow guiding structures are the opening windows 51 cut out by the fin units 5 and opening windows.
  • the air inlet of the fin 51 faces the upwind side 1, and the flow guiding structure guides the gas flowing on one side of the fins through the fins and flows to the other side of the fins, effectively extending the flow path of the airflow, improving the heat exchange efficiency and ensuring the heat. Heat exchange uniformity of the exchanger.
  • the fins are also provided with positioning support pieces 4 for stacking the fins to form a sheet pitch.
  • the positioning support pieces 4 include a first support piece 41 and a second support piece 42.
  • Each fin unit 5 is provided near the upwind side 1 with a first
  • the supporting piece 41 is provided with a second supporting piece 42 near the leeward side 2 and the reinforcing protrusions 6 are spaced apart from the second supporting piece 42.
  • the fins are provided with a wave-shaped bend near the leeward side 2 and the wave-shaped bend is used for drainage dew.
  • the height of the diversion structure protruding from the fin is H1, and the height of the positioning support piece 4 is H from the fin.
  • H1 is greater than or equal to one-third H and less than or equal to two-thirds H.
  • the positioning support piece 4 is used for Determine the distance between the fins during stacking to prevent the diversion structure from affecting the assembly of the fins.
  • the airflow flows from the upwind side 1 to the downwind side 2.
  • the opening window 51 is approximately rectangular and is cut and bent relative to the fins.
  • the opening window 51 changes a part of the gas flow path from the surface of the fins, and the opening window 51 faces downwind.
  • One side of side 2 is a bent edge. Two sides adjacent to the opening window 51 and the bending edge are connected to the fins.
  • the side of the opening window 51 facing the upwind side 1 forms an air inlet with the fins, and the airflow After entering from the air inlet, it passes through the fins and flows to the other side of the fins.
  • each fin unit 5 is provided with a plurality of guide structures arranged along the extending direction of the flat tube groove 3;
  • the window opening 51 includes an upper opening window 511 and a lower opening window 512.
  • the sheet includes an upper surface 52 and a lower surface 53.
  • the upper opening window 511 is cut to the side of the upper surface 52 of the fin, and the lower opening window 512 is cut to the side of the lower surface 53 of the fin; the upper opening window 511 and the The opening interval between the adjacent lower opening windows 512 facing the windward side 1 is L3, and the opening length of the upper opening window 511 in the extending direction of the flat tube groove 3 is L2, and L3 is less than or equal to L2;
  • the opening interval between the upper opening window 511 and the adjacent lower opening window 512 facing the leeward side 2 is L1, and the opening length of the lower opening window 512 in the direction of the flat tube groove 3 extension is L4, L1 Or L3 is less than or equal to L4 or L2;
  • the angle between the upper opening window 511 and the fins facing the windward side 1 is A, the included angle A is greater than or equal to 20 ° and less than or equal to 45 °, and the lower opening window 512 and the fins are facing the windward side 1
  • the included angle is B, and the included angle B is greater than or equal to 20 ° and less than or equal to 45 °;
  • the airflow passes through the upper surface 52 and the lower surface 53 of the fin unit 5 and flows in an S shape toward the leeward side 2, and the fin's own wind resistance decreases.
  • the air flow on the upper surface 52 and the small surface of the fin is improved, the flow path of the air flow is extended, the heat exchange path of the air flow is relatively extended, and
  • a heat exchanger a flat tube 9 is snapped into a flat tube groove 3
  • the heat exchanger includes a plurality of fins and a plurality of flat tubes 9, with the upper surface 52 of the fins facing For the forward direction, each fin is sequentially lined up to form a fin group.
  • a plurality of the flat tubes 9 are respectively inserted into the flat tube grooves 3 of the fin group.
  • the upper opening windows 511 and The opening length, cut-up height, cut-off angle, and distance between each other of the lower opening window 512 allow the airflow flowing from the upper surface 52 and the lower surface 53 of the fins to repeatedly flow between the upper opening window 511 and the lower opening window 512.
  • this embodiment provides a fin and a heat exchanger having the same.
  • the fin has an upwind side 1 and an opposite downwind side 2.
  • the fins are provided with One or more flat tube slots 3, flat tube slots 3 are used to install flat tubes 9, flat tube slots 3 extend from the upwind side 1 to the downwind side 2, and the slot of the flat tube slot 3 is located on the upwind side 1, on both sides of the slot A reinforcing rib 7 is provided, and the flat tube groove 3 is also provided with a flanging 8.
  • the flat tube groove 3 divides the fins into a plurality of fin units 5, and each fin unit 5 is provided with one or more flow guiding structures.
  • the flow guiding structures are the opening windows 51 cut out by the fin units 5 and opening windows.
  • the air inlet of the fin 51 faces the upwind side 1, and the flow guiding structure guides the gas flowing on one side of the fins through the fins and flows to the other side of the fins, effectively extending the flow path of the airflow, improving the heat exchange efficiency and ensuring the heat Heat exchange uniformity of the exchanger.
  • the fins are also provided with positioning support pieces 4 for stacking the fins to form a sheet pitch.
  • the positioning support pieces 4 include a first support piece 41 and a second support piece 42.
  • Each fin unit 5 is provided near the upwind side 1 with a first
  • the supporting piece 41 is provided with a second supporting piece 42 near the leeward side 2 and the reinforcing protrusions 6 are spaced apart from the second supporting piece 42.
  • the fins are provided with a wave-shaped bend near the leeward side 2 and the wave-shaped bend is used for drainage dew.
  • the height of the diversion structure protruding from the fin is H1, and the height of the positioning support piece 4 is H from the fin.
  • H1 is greater than or equal to one-third H and less than or equal to two-thirds H.
  • the positioning support piece 4 is used for Determine the distance between the fins during stacking to prevent the diversion structure from affecting the assembly of the fins.
  • the airflow flows from the upwind side 1 to the downwind side 2.
  • the opening window 51 is approximately rectangular and is cut and bent relative to the fins.
  • the opening window 51 changes a part of the gas flow path from the surface of the fins, and the opening window 51 faces downwind.
  • One side of side 2 is a bent edge. Two sides adjacent to the opening window 51 and the bending edge are connected to the fins.
  • the side of the opening window 51 facing the upwind side 1 forms an air inlet with the fins, and the airflow After entering from the air inlet, it passes through the fins and flows to the other side of the fins.
  • each fin unit 5 is provided with a plurality of opening windows 51 arranged along the extending direction of the flat tube groove 3, and the opening of the opening windows 51 faces the same side of the fins.
  • the opening length of the opening window 51 in the extending direction of the flat tube groove 3 is L5, and the opening distance of the adjacent opening window 51 in the extending direction of the flat tube groove 3 is L6, L6 is less than or equal to L5, and the opening window 51
  • the angle between the fin and the windward side 1 is C, and the included angle C is greater than or equal to 20 ° and less than or equal to 45 °.
  • the window opening 51 When the window opening 51 is cut and located on the side of the upper surface 52 of the fin, part of the air flow flowing through the upper surface 52 The window 51 flows to the lower surface 53 of the fins.
  • the upper surface 52 of each layer of fins flows to the lower surface 53 through the window 51 and extends.
  • the heat exchange path of the air flow improves the heat exchange performance of the heat exchanger and increases the uniformity of heat exchange of the heat exchanger.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne une ailette et un échangeur de chaleur doté de ladite ailette. L'ailette comporte un côté en amont (1) et un côté en aval opposé (2); l'ailette est munie d'une ou plusieurs rainures (3) de tube plat, les rainures (3) de tube plat étant utilisées pour monter des tubes plats; les rainures (3) de tube plat s'étendent du côté en amont (1) au côté en aval (2); les rainures (3) de tube plat divisent l'ailette en une pluralité d'unités (5) d'ailette, chaque unité (5) d'ailette étant munie d'une ou plusieurs structures de guidage d'écoulement, les structures de guidage d'écoulement étant utilisées pour amener un gaz coulant d'un côté de l'ailette, à travers l'ailette, à couler vers l'autre côté de l'ailette. La présente invention peut prolonger le circuit d'écoulement de gaz, améliorer l'efficacité d'échange de chaleur d'un échangeur de chaleur, et assurer l'uniformité d'échange de chaleur d'un gaz.
PCT/CN2019/071954 2018-09-30 2019-01-16 Ailette et échangeur de chaleur doté de ladite ailette WO2020062722A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811159649.2A CN109186306A (zh) 2018-09-30 2018-09-30 一种翅片及具有其的热交换器
CN201811159649.2 2018-09-30

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WO2020062722A1 true WO2020062722A1 (fr) 2020-04-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022244196A1 (fr) * 2021-05-20 2022-11-24 三菱電機株式会社 Échangeur de chaleur

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109186306A (zh) * 2018-09-30 2019-01-11 珠海格力电器股份有限公司 一种翅片及具有其的热交换器
CN109186302B (zh) * 2018-09-30 2024-05-03 珠海格力电器股份有限公司 一种翅片及具有其的热交换器
CN110763069B (zh) * 2019-11-12 2021-02-26 珠海格力电器股份有限公司 翅片、换热器、换热系统、空调器和家用电器

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CN203550714U (zh) * 2013-10-21 2014-04-16 美的集团股份有限公司 翅片及采用该翅片的换热器
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022244196A1 (fr) * 2021-05-20 2022-11-24 三菱電機株式会社 Échangeur de chaleur

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