EP2486358B1 - Échangeur de chaleur à microcanaux et son procédé de fabrication - Google Patents

Échangeur de chaleur à microcanaux et son procédé de fabrication Download PDF

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Publication number
EP2486358B1
EP2486358B1 EP10757792.6A EP10757792A EP2486358B1 EP 2486358 B1 EP2486358 B1 EP 2486358B1 EP 10757792 A EP10757792 A EP 10757792A EP 2486358 B1 EP2486358 B1 EP 2486358B1
Authority
EP
European Patent Office
Prior art keywords
tube
heat exchanger
retainer
fin
plate
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.)
Not-in-force
Application number
EP10757792.6A
Other languages
German (de)
English (en)
Other versions
EP2486358A2 (fr
Inventor
Husnu Kerpicci
Aydin Celik
Onur Poyraz
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP2486358A2 publication Critical patent/EP2486358A2/fr
Application granted granted Critical
Publication of EP2486358B1 publication Critical patent/EP2486358B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F28F1/02—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
    • 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
    • F28F1/20—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 attachable to the element
    • 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
    • F28F3/06—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being attachable to the element
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2260/00—Heat exchangers or heat exchange elements having special size, e.g. microstructures
    • F28F2260/02—Heat exchangers or heat exchange elements having special size, e.g. microstructures having microchannels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/08—Fastening; Joining by clamping or clipping
    • F28F2275/085—Fastening; Joining by clamping or clipping with snap connection

Definitions

  • the present invention relates to a heat exchanger comprising microchannel tubes whereon fins are mounted.
  • microchannel tubes in heat exchangers as an alternative to circular tubes has increased with each passing day since they increase the coefficient of heat convection.
  • the microchannels have a rectangular or flat profile. Due to this configuration, the fins to be used on the microchannels require to have a different structure than the fins used on the circular tube heat exchangers.
  • the tube - fin contact is provided by inflating the tubes after the fins are fitted to the tube.
  • This method is not suitable in microchannels since it will damage the structure of the channel.
  • the microchannels due to their rectangular shaped profiles, can result in the situation wherein the fin contact is not good enough and is not able to use sufficient fin surface.
  • the performance of the heat exchanger is decreased by not providing adequate contact of the fins used on the microchannels with the channel surface.
  • a heat exchanger according to the preamble of claim 1 is known from document JPS5447153 .
  • Japanese Patent Application No JP8247678 the fins mounted on a heat exchanger having microchannel tubes are explained.
  • the aim of the present invention is the realization of a heat exchanger comprising microchannel tube, the performance of which is improved by mounting the fin thereon.
  • the heat exchanger realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises a tube having at least two microchannels with parallel flow, through which the refrigerant passes, and a retainer formed by bending a sheet, surrounding the bottom, top and a side of the tube and a fin having a plate again formed by bending a sheet, secured to the retainer at the middle such that it will partially surround the retainer, and the ends of which are folded such that there will be an angle between the tube surface and itself.
  • the fin is mounted to the microchannel tube from one side to be parallel to the plate flow direction.
  • the performance of the heat exchanger is provided to be increased by providing better fin contact on the tube with quadrangular cross section.
  • the fin is shaped as pincers.
  • the fin contacts the tube by completely being seated on the surfaces of the tube and clasps the microchannel tube tightly from above and below by itself. This provides ease of both assembly and manufacturing.
  • the retainer comprises two arms that contact the top and bottom of the tube and a bend that joins these two arms.
  • the tube is compressed from above and below by the arms and remains between the arms. Accordingly, the contact between the tube and the fin is provided in the best possible manner.
  • the plate is secured from its middle portion on the bend and is bent such that it will surround the arms. Since the fin is mounted to the tube by fitting from the side, the necessity for fitting the fins successively to the tube in block form is eliminated.
  • the heat exchanger comprises a housing. This housing facilitates the assembly of the defrost heater on the heat exchanger.
  • the fin is mounted on the heat exchanger by fitting from one side. Consequently, the performance of the heat exchanger is provided to be increased by providing better fin contact on the tube with quadrangular cross section.
  • the heat exchanger (1) of the present invention comprises a microchannel tube (2), preferably with quadrangular cross section, having channels (3) arranged in order and parallel to each other, through which the refrigerant passes.
  • the performance of the heat exchanger (1) is provided to be increased by providing better fin (4) contact on the tube (2) with quadrangular cross section.
  • the fin (4) is manufactured from aluminum material and is shaped as pincers. Thus, when the fin (4) is mounted on the tube (2), it clasps the tube (2) tightly. By means of the pincers shaped configuration, the fin (4) - tube (2) contact is provided to be tight by itself. Ease of assembly and manufacturing is provided since an additional operation is not required to be performed for increasing the tube (2) - fin (4) contact after completing the assembly of the fin (4) on the tube (2).
  • the length of the sheet, from which the plate (6) is manufactured is equal to the length of the sheet, from which the retainer (5) is manufactured.
  • the retainer (5) comprises two arms (9) that contact the top and bottom of the tube (2) and a bend (7) that joins these two arms (9).
  • the fin (4) is mounted on the tube (2) by fitting from its side portion, the tube (2) is compressed from above and below by the arms (9) and remains between the arms (9) due to the pincers configuration. Accordingly, the contact between the tube (2) and the fin (4) is provided in the best possible manner.
  • the plate (6) is secured from its middle portion on the bend (7) and is bent such that it will surround the arms (9). Since the fin (4) is mounted to the tube (2) by fitting from the side, the necessity for fitting the fins (4) to the tube (2) successively in a block is eliminated.
  • the fins (4) are assembled on the microchannel tube (2) in the following way: Two aluminum sheets, after being overlapped, are secured to one another from their middle portions preferably by adhesion. In this position, the sheet forming the plate (6) is secured from its middle portion to the bend (7) of the sheet forming the retainer (5). Afterwards, the two sheets secured to one another are bent by being pressed from their bends (7) and middle portions. While one of the sheets forms the retainer (5) with pincers configuration that clasps the microchannel tube (2), the other forms the plate (6).
  • the arms (9) apply pressure on the microchannel tube (2) when this pincers shaped configuration is fitted on the surface of the microchannel tube (2) and the tube (2) - fin (4) contact is provided tightly by itself. Thus, an additional operation is not required for improving the tube (2) - fin (4) contact.
  • the plate (6) is lifted from its free ends providing to form the fin (4) shape on the surface of the microchannel tube (2).
  • the process of lifting the plates (6) can be performed before or after the assembly operation of the retainer (5) on the microchannel tube (2). Heat transfer areas are formed on the tube (2) after the plates (6) are lifted and the assembly of the fin (4) on the microchannel tube (2) is completed.
  • the fin (4) comprises the plate (6) which is lifted to be vertical to the tube (2) surface ( Figure 3 ).
  • the fin (4) comprises the plate (6) which is lifted to be inclined to the tube (2) surface ( Figure 4 ).
  • the heat exchanger (1) comprises a housing (8) that remains between the bend (7) and the side of the tube (2).
  • the defrost heater utilized in no-frost refrigerators and used to melt the frost, which is accumulated on the heat exchanger (1), by heating can be mounted to the heat exchanger (1) by being passed through this housing (8). Furthermore, increase in defrost effectiveness and decrease in energy consumption by reducing defrost duration are provided.
  • the heat exchanger (1) is an evaporator.
  • the heat exchanger (1) is a condenser.
  • the heat exchanger (1) is used in refrigerators.
  • the manufacturing method of the heat exchanger (1) of the present invention comprises the following steps:

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)
  • Micromachines (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Claims (13)

  1. Un échangeur de chaleur (1) comprenant un tube de microcanal (2) qui comporte des canaux (3) agencés dans l'ordre et parallèlement l'un à l'autre, à travers lesquels le réfrigérant peut passer, et
    • un élément de retenue (5) qui est formé en pliant une feuille de forme rectangulaire au centre et monté sur le tube (2) de manière à entourer le haut, le bas et un côté du tube (2), caractérisé par:
    • une ailette (4) qui a une plaque (6) qui est formée par une autre feuille de forme rectangulaire, fixée au dispositif de retenue (5) au centre, étant courbée du milieu sur l'élément de retenue (5) de telle sorte qu'elle entourera l'élément de retenue (5), et qui forme une saillie sur la surface du tube (2) en soulevant au moins une extrémité de telle sorte qu'il y ait un angle entre la surface du tube (2) et elle-même.
  2. Un échangeur de chaleur (1) selon la revendication 1, caractérisé en ce que l'ailette (4) est configurée comme pinces.
  3. Un échangeur de chaleur (1) selon la revendication 1, caractérisé par l'élément de retenue (5) et la plaque (6) qui sont fabriqués à partir de matériaux en aluminium.
  4. Un échangeur de chaleur (1) selon la revendication 1, caractérisé par la plaque (6) qui est fabriquée à partir de la feuille avec la longueur égale à la longueur de la feuille à partir de laquelle l'élément de retenue (5) est fabriqué.
  5. Un échangeur de chaleur (1) selon la revendication 1, caractérisé par l'élément de retenue (5) qui comprend deux bras (9) qui entrent en contact avec le haut et le bas du tube (2) et une courbe (7) qui joint ces deux bras (9).
  6. Un échangeur de chaleur (1) selon la revendication 5, caractérisé par un boîtier (8) qui reste entre la courbe (7) et le côté du tube (2).
  7. Un échangeur de chaleur (1) selon la revendication 5, caractérisé par la plaque (6) avec des extrémités libres qui est fixée à partir de sa partie médiane sur la courbe (7) et pliées de manière à entourer les bras (9).
  8. Un échangeur de chaleur (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la plaque (6) qui est soulevée pour être verticale à la surface du tube (2).
  9. Un échangeur de chaleur (1) selon l'une quelconque des revendications 1 à 7, caractérisé par la plaque (6) qui est soulevée pour être inclinée par rapport à la surface du tube (2).
  10. Un échangeur de chaleur (1) selon l'une quelconque des revendications précédentes, qui est un évaporateur.
  11. Un échangeur de chaleur (1) selon l'une quelconque des revendications 1 à 9, qui est un condenseur.
  12. Un réfrigérateur qui comprend un échangeur de chaleur (1) selon l'une quelconque des revendications précédentes.
  13. Un procédé de fabrication pour un échangeur de chaleur (1) selon l'une quelconque des revendications précédentes, comprenant les étapes consistant à fixer deux feuilles de forme rectangulaire l'une par rapport à l'autre au niveau de leurs parties médianes, à monter les deux feuilles solidaires l'une de l'autre sur le tube à micro canaux (2) en pliant leurs parties médianes telle qu'elles entoureront le haut, le bas et l'un des côtés du tube à micro canaux (2) et à soulever la feuille extérieure à partir de ses extrémités de telle sorte qu'il y ait un angle entre la surface du tube à micro canaux (2) et eux-mêmes tandis que la feuille interne ferme le tube à micro canaux (2).
EP10757792.6A 2009-10-07 2010-09-29 Échangeur de chaleur à microcanaux et son procédé de fabrication Not-in-force EP2486358B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200907589 2009-10-07
PCT/EP2010/064475 WO2011042344A2 (fr) 2009-10-07 2010-09-29 Échangeur de chaleur à microcanaux et son procédé de fabrication

Publications (2)

Publication Number Publication Date
EP2486358A2 EP2486358A2 (fr) 2012-08-15
EP2486358B1 true EP2486358B1 (fr) 2017-07-12

Family

ID=43857204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10757792.6A Not-in-force EP2486358B1 (fr) 2009-10-07 2010-09-29 Échangeur de chaleur à microcanaux et son procédé de fabrication

Country Status (2)

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EP (1) EP2486358B1 (fr)
WO (1) WO2011042344A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2729602T3 (es) 2013-01-28 2019-11-05 Carrier Corp Unidad de intercambio de calor con varios bancos de tubos con un conjunto de colector
US10337799B2 (en) 2013-11-25 2019-07-02 Carrier Corporation Dual duty microchannel heat exchanger

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3190352A (en) * 1962-08-23 1965-06-22 Modine Mfg Co Radiator tube protector
BE756193A (fr) * 1969-09-24 1971-02-15 Chausson Usines Sa Obturateur amovible formant subsidiairement entretoise pour echangeur de chaleur a faisceaux tubulaires
CH561406A5 (en) * 1973-08-16 1975-04-30 Stramax Ag Heat-transmitting lamellae fixture in heater or cooler - with clips at U-bend ends fitting against pipes
US4158908A (en) * 1974-09-16 1979-06-26 Raypak, Inc. Securement of heat exchanger surfaces to tubes and method of fabrication
JPS5447153A (en) * 1977-09-21 1979-04-13 Hitachi Ltd Heat exchanger
FR2554573A1 (fr) * 1983-11-08 1985-05-10 Vaux Andigny Ateliers Const Ailette pour appareil de chauffage
DE3521378A1 (de) * 1985-06-14 1986-12-18 Walfried Dipl.-Ing. 5400 Koblenz Dost Waermetauscher in form von rippenrohren
JPH08197645A (ja) 1995-01-30 1996-08-06 Nippondenso Co Ltd 熱交換器の製造方法
JPH08247678A (ja) 1995-03-10 1996-09-27 Nagano Haruo アルミニウム製熱交換器
DE60217680D1 (de) * 2001-05-01 2007-03-08 Beltran Julian Romero Platten-rohr-wärmetauscher

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2011042344A3 (fr) 2013-03-28
WO2011042344A2 (fr) 2011-04-14
EP2486358A2 (fr) 2012-08-15

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