EP1715278A2 - Verdampfer mit ersten aerodynamischen Noppen zur Unterdrückung von Pfeiffgeräuschen - Google Patents

Verdampfer mit ersten aerodynamischen Noppen zur Unterdrückung von Pfeiffgeräuschen Download PDF

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Publication number
EP1715278A2
EP1715278A2 EP06075743A EP06075743A EP1715278A2 EP 1715278 A2 EP1715278 A2 EP 1715278A2 EP 06075743 A EP06075743 A EP 06075743A EP 06075743 A EP06075743 A EP 06075743A EP 1715278 A2 EP1715278 A2 EP 1715278A2
Authority
EP
European Patent Office
Prior art keywords
dimples
plates
disposed
assembly
set forth
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.)
Withdrawn
Application number
EP06075743A
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English (en)
French (fr)
Other versions
EP1715278A3 (de
Inventor
Steven J. Papapanu
Sunil S. Mehendale
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.)
Delphi Technologies Inc
Original Assignee
Delphi 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 Delphi Technologies Inc filed Critical Delphi Technologies Inc
Publication of EP1715278A2 publication Critical patent/EP1715278A2/de
Publication of EP1715278A3 publication Critical patent/EP1715278A3/de
Withdrawn legal-status Critical Current

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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
    • 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
    • F28F3/044—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 pontual, e.g. dimples
    • 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
    • F28D1/0308—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 the conduits being formed by paired plates touching each other
    • F28D1/0325—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 the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another
    • F28D1/0333—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 the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another the plates having integrated connecting members
    • F28D1/0341—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 the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another the plates having integrated connecting members with U-flow or serpentine-flow inside the 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
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0085—Evaporators
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/02—Streamline-shaped 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
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/28—Safety or protection arrangements; Arrangements for preventing malfunction for preventing noise

Definitions

  • the present invention relates to a heat exchanger assembly, and more particularly, to an evaporator for a heating and/or air conditioning system (HVAC) for automotive vehicles.
  • HVAC heating and/or air conditioning system
  • An evaporator of the type to which the subject invention pertains exchanges heat between a cooling fluid and air.
  • a stack of virtually identical plates are positioned symmetrically in pairs having mating edges and a concave region delimited by the edges to define a fluid passage.
  • the plates have tubular projections defining an inlet for entering fluid to the passage and an outlet for exiting fluid from the passage to thereby establish a direction of fluid flow.
  • Each inlet is connected to the outlet of the preceding pair of plates and each outlet is connected to the inlet of the next pair of plates.
  • each pair of plates includes a central rib to define a U-shaped passage having a fluid entering leg and a fluid exiting leg interconnected by an open bottom. Examples of such heat exchangers are described in U. S. Patents 5,111,878 to Kadle and 5,409,056 to Farry, Jr. et al .
  • the plates are usually stamped of thin gauge metal and a plurality of first dimples are stamped into the plates to project into the passage to interact with fluid flow through the passage.
  • These first dimples can be identical in shape, position and orientation or they can be of various shapes as illustrated in U. S. Patent 6,289,982 to Naji . They project into the interior of the passage formed by the pairs of plates and thus allow better heat exchange by agitating the cooling fluid flow, and especially by promoting its movement in a turbulent flow.
  • These first dimples can be formed by an assembly method, particularly by brazing two bosses opposite each other. In this case, the plates forming a pair of plates are the same as one another, and each boss has an equivalent height of approximately one-half of the depth of the U-shaped passage, that is to say of the distance from the opposing plates.
  • cooling fluid in this type of evaporator can produce a noise, particularly a "whistling", i.e., a tonal noise emanating from a plate-type evaporator used in certain automotive climate control systems under transient conditions. It is believed that this tonal noise occurs when gaseous refrigerant at sufficiently high velocities flows over the first dimples. It is further believed that the tonal noise is caused by periodic flow instability (manifested as vortices) in the wake of the first dimples.
  • each of the first dimples having an aerodynamic shape including a large bulbous leading portion extending into a longer and tapering trailing portion with the leading portion being disposed into the fluid flow from the inlet to the outlet.
  • the aerodynamic first dimples of this invention will suppress or eliminate the instability that is produced in the dimple wake when gaseous refrigerant flows over the first dimples.
  • An additional advantage of the aerodynamic first dimples of this invention is a reduction in refrigerant pressure drop.
  • a heat exchanger assembly is variously shown in the Figures and includes as a basic component at least one pair 20 of plates 22.
  • the plates 22 can be identical and disposed in mirror relationship to one another.
  • the plates 22 have mating edges 24 and a concave region delimited by the edges 24 to define a fluid passage 26.
  • the assembly includes a plurality of pairs 20 of the plates 22 disposed in series for fluid flow from a pass through one pair 20 of plates 22 to a pass through the next pair 20 of plates 22, as illustrated by the arrows in Figure 3.
  • Each pair 20 of plates 22 includes a central rib 28 to define a U-shaped passage 26 having a fluid entering leg and a fluid exiting leg interconnected by an open bottom interconnecting the legs below the lower end of the engaging ribs 28.
  • the plates 22 have tubular projections 30 defining an inlet for entering fluid to the passage 26 and an outlet for exiting fluid from the passage 26 to thereby establish a direction of fluid flow, as indicated by the arrows in Figures 1 and 4.
  • the heat exchanger assembly normally includes air-fins 32 disposed between adjacent pairs 20 of plates 22 for enhancing heat exchange between air flowing (as shown by the air flow arrow in Figure 1) through the air-fins 32 and fluid flow through the passage 26 defined by each pair 20 of plates 22.
  • additional fluid-fins 34 may be disposed in the fluid passages 26 although in the preferred embodiment such internal fins would not be included.
  • a plurality of first dimples 36 project into the passage 26 to interact with fluid flow through the passage 26 and each of the first dimples 36 has an aerodynamic shape including a large bulbous leading portion extending into a longer and tapering trailing portion with the leading portion being disposed into the fluid flow from the inlet to the outlet.
  • the aerodynamic shape of each of the first dimples 36 is tear-drop shaped.
  • the first dimples 36 are combined in use with a plurality of second dimples 38 having different shapes.
  • the second dimples 38 comprise known regular or bluff-body shapes to enhance the uniform distribution of liquid refrigerant over the plates 22 and, therefore, the heat transfer.
  • the first dimples 36 are disposed in at least a selected section of the last pair 20 of plates 22 defining the last pass of fluid flow through the entire heat exchanger assembly.
  • the first dimples 36 may also be disposed in at least the last two pairs 20 of plates 22 defining the last two passes.
  • the first dimples 36 are combined with the second dimples 38 in the pair 20 of plates 22 defining the last pass.
  • aerodynamic dimples reduce heat transfer due to less intense turbulence, however, very desirable results are produced by using two kinds of dimples.
  • the regular (or bluff-body) dimples in the earlier passes are designed to enhance the uniform distribution of liquid refrigerant over the tube plate and therefore the heat transfer.
  • Figure 5 shows the round dimples 38 combined with oval or oblong dimples in earlier passes.
  • the aerodynamic dimples in the last pass or last two passes or in selected tubes thereof (which typically experience high vapor superheats and velocities), are intended to suppress acoustic resonance.
  • first dimples 36 are disposed in the legs and not in the bottom of the U-shaped passage 26 while the second dimples 38 are disposed in the bottom of the U-shaped passage 26 below the bottom end of the mating ribs 28. Since the flow-induced instabilities are directly related to dimple geometry, this invention proposes "aerodynamic" or "tear-drop shaped" dimples in the last refrigerant pass (or last two passes) of the evaporator.
  • this invention proposes the disposition of aerodynamic or tear-drop shaped first dimples 36 in the last refrigerant pass defined by the last pair 20 of plates 22, or in the last two pairs 20 of plates 22, or in selected sections (e.g., above the bottom-end of the mating ribs 28 of the last one or two passes as defined by the last two pairs 20 of plates 22, it being appreciated that the dimples 36 could be used in any number or combination of passes.)
  • the aerodynamic first dimples 36 suppress acoustic resonance in the last pass or last two passes where high vapor superheats and high velocities typically occur to cause acoustic resonance.
  • the combination of the aerodynamic first dimples 36 with the normal second dimples 38 provides a balance between heat transfer and noise reduction.
  • Each first dimple 36 has an axis A and extends equally on either side of and along the axis A.
  • each axis A is disposed at an acute angle ⁇ from the direction of fluid flow.
  • the first dimples 36 are disposed in overlapping relationship in the direction of fluid flow.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP06075743A 2005-04-18 2006-03-30 Verdampfer mit ersten aerodynamischen Noppen zur Unterdrückung von Pfeiffgeräuschen Withdrawn EP1715278A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/108,588 US20060231241A1 (en) 2005-04-18 2005-04-18 Evaporator with aerodynamic first dimples to suppress whistling noise

Publications (2)

Publication Number Publication Date
EP1715278A2 true EP1715278A2 (de) 2006-10-25
EP1715278A3 EP1715278A3 (de) 2011-11-02

Family

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EP06075743A Withdrawn EP1715278A3 (de) 2005-04-18 2006-03-30 Verdampfer mit ersten aerodynamischen Noppen zur Unterdrückung von Pfeiffgeräuschen

Country Status (2)

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US (1) US20060231241A1 (de)
EP (1) EP1715278A3 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2050616A1 (de) * 2007-10-18 2009-04-22 Delphi Technologies, Inc. Durch Evaporation vorgekühlte Sitzanordnung
EP2459954A2 (de) * 2009-07-29 2012-06-06 Thermax Limited Wärmetauscherrohr
EP2299228A3 (de) * 2009-08-26 2012-12-19 Munters Corporation 24416 Us Vorrichtung und Verfahren zum Ausgleichen der Temperatur der Austrittsflächenplatte warmer Flüssigkeiten in Wärmetauschern
CN103958999A (zh) * 2011-11-28 2014-07-30 达纳加拿大公司 具有一体式的用于阻碍绕过的片状件的换热板
EP3598046A1 (de) * 2018-07-20 2020-01-22 Valeo Vyminiky Tepla, s.r.o. Wärmetauscherplatte und wärmetauscher mit solch einer wärmetauscherplatte
FR3086380A1 (fr) * 2018-09-25 2020-03-27 Valeo Systemes Thermiques Plaque constitutive d'un echangeur de chaleur et echangeur de chaleur comprenant au moins une telle plaque
EP3182503B1 (de) * 2014-12-04 2021-08-11 LG Chem, Ltd. Batteriepack

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Publication number Priority date Publication date Assignee Title
US20060144051A1 (en) * 2005-01-06 2006-07-06 Mehendale Sunil S Evaporator designs for achieving high cooling performance at high superheats
TWM403012U (en) * 2010-11-03 2011-05-01 Enermax Tech Corporation Heat dissipating device having swirl generator
CN102207305A (zh) * 2011-07-01 2011-10-05 北京桑普电器有限公司 充油薄板油汀电暖气
US9255491B2 (en) 2012-02-17 2016-02-09 United Technologies Corporation Surface area augmentation of hot-section turbomachine component
DE112013005225T5 (de) 2012-10-31 2015-08-06 Dana Canada Corporation Wärmetauscher aus gestapelten Platten mit nur einer Plattengestaltung
USD735842S1 (en) * 2013-02-22 2015-08-04 The Abell Foundation, Inc. Condenser heat exchanger plate
USD736361S1 (en) * 2013-02-22 2015-08-11 The Abell Foundation, Inc. Evaporator heat exchanger plate
US10515159B2 (en) * 2013-03-06 2019-12-24 Dassault Systemes Simulia Corp. Flow-induced noise source identification
US9631876B2 (en) 2013-03-19 2017-04-25 Mahle International Gmbh Heat exchanger
EP3006884B1 (de) * 2014-10-07 2017-11-22 Borgwarner Emissions Systems Spain, S.L.U. Röhre für einen Wärmetauscher
JP6699588B2 (ja) * 2017-02-21 2020-05-27 株式会社デンソー 熱交換器
SI3800422T1 (sl) * 2017-03-10 2023-12-29 Alfa Laval Corporate Ab Plošča za napravo za izmenjevanje toplote
US10677538B2 (en) 2018-01-05 2020-06-09 Baltimore Aircoil Company Indirect heat exchanger
USD889420S1 (en) * 2018-01-05 2020-07-07 Baltimore Aircoil Company, Inc. Heat exchanger cassette
FR3086376B1 (fr) * 2018-09-25 2020-09-04 Valeo Systemes Thermiques Plaque constitutive d'un echangeur de chaleur et echangeur de chaleur comprenant au moins une telle plaque
CN111366013A (zh) * 2018-12-26 2020-07-03 浙江盾安热工科技有限公司 扁管及换热器
DE102019106012A1 (de) * 2019-03-08 2020-09-10 Mahle International Gmbh Wärmetauscheranordnung und Wärmetauscher

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US5101891A (en) * 1991-06-03 1992-04-07 General Motors Corporation Heat exchanger tubing with improved fluid flow distribution
US5409056A (en) * 1992-05-11 1995-04-25 General Motors Corporation U-flow tubing for evaporators with bump arrangement for optimized forced convection heat exchange
US5544703A (en) * 1993-05-18 1996-08-13 Vicarb Plate heat exchanger
WO2005005904A1 (en) * 2003-07-15 2005-01-20 Outokumpu Copper Products Oy Pressure containing heat transfer tube and method of making thereof

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FR2788123B1 (fr) * 1998-12-30 2001-05-18 Valeo Climatisation Evaporateur, appareil de chauffage et/ou de climatisation et vehicule comportant un tel evaporateur
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5101891A (en) * 1991-06-03 1992-04-07 General Motors Corporation Heat exchanger tubing with improved fluid flow distribution
US5409056A (en) * 1992-05-11 1995-04-25 General Motors Corporation U-flow tubing for evaporators with bump arrangement for optimized forced convection heat exchange
US5544703A (en) * 1993-05-18 1996-08-13 Vicarb Plate heat exchanger
WO2005005904A1 (en) * 2003-07-15 2005-01-20 Outokumpu Copper Products Oy Pressure containing heat transfer tube and method of making thereof

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2050616A1 (de) * 2007-10-18 2009-04-22 Delphi Technologies, Inc. Durch Evaporation vorgekühlte Sitzanordnung
EP2459954A2 (de) * 2009-07-29 2012-06-06 Thermax Limited Wärmetauscherrohr
EP2459954A4 (de) * 2009-07-29 2014-05-21 Thermax Ltd Wärmetauscherrohr
EP2299228A3 (de) * 2009-08-26 2012-12-19 Munters Corporation 24416 Us Vorrichtung und Verfahren zum Ausgleichen der Temperatur der Austrittsflächenplatte warmer Flüssigkeiten in Wärmetauschern
CN103958999A (zh) * 2011-11-28 2014-07-30 达纳加拿大公司 具有一体式的用于阻碍绕过的片状件的换热板
EP3182503B1 (de) * 2014-12-04 2021-08-11 LG Chem, Ltd. Batteriepack
EP3598046A1 (de) * 2018-07-20 2020-01-22 Valeo Vyminiky Tepla, s.r.o. Wärmetauscherplatte und wärmetauscher mit solch einer wärmetauscherplatte
WO2020016082A1 (en) * 2018-07-20 2020-01-23 Valeo Vymeniky Tepla S. R. O. Heat exchanger plate and heat exchanger comprising such a heat exchanger plate
US11662158B2 (en) 2018-07-20 2023-05-30 Valeo Vymeniky Tepla S. R. O. Heat exchanger plate and heat exchanger comprising such a heat exchanger plate
FR3086380A1 (fr) * 2018-09-25 2020-03-27 Valeo Systemes Thermiques Plaque constitutive d'un echangeur de chaleur et echangeur de chaleur comprenant au moins une telle plaque

Also Published As

Publication number Publication date
EP1715278A3 (de) 2011-11-02
US20060231241A1 (en) 2006-10-19

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