EP2179241A1 - Dispositif à ailettes de refroidissement en forme de y - Google Patents

Dispositif à ailettes de refroidissement en forme de y

Info

Publication number
EP2179241A1
EP2179241A1 EP08784665A EP08784665A EP2179241A1 EP 2179241 A1 EP2179241 A1 EP 2179241A1 EP 08784665 A EP08784665 A EP 08784665A EP 08784665 A EP08784665 A EP 08784665A EP 2179241 A1 EP2179241 A1 EP 2179241A1
Authority
EP
European Patent Office
Prior art keywords
cooling
pair
fins
cooling fins
symmetry
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Withdrawn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
EP08784665A
Other languages
German (de)
English (en)
Inventor
Michael Haug
Martin Judith
Markus Deeg
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.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
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 Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH, Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Publication of EP2179241A1 publication Critical patent/EP2179241A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • 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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/26—Generation or transmission of movements for final actuating mechanisms
    • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
    • F16H61/32—Electric motors actuators or related electrical control means therefor
    • 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
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/30—Safety or protection arrangements; Arrangements for preventing malfunction for preventing vibrations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer

Definitions

  • the invention relates to a cooling fin arrangement for fixing and cooling a device having a plurality of cooling fins.
  • the invention relates to a transmission actuator with such a fin assembly.
  • cooling fins In the design of devices, particularly of cast or plastic, cooling fins must be attached to the outside of the housing of the devices to achieve adequate cooling of the devices. By the cooling fins, the area in contact with the ambient air is increased, so that the waste heat of the devices can be delivered in an improved manner. In addition, these cooling fins must be provided in order to obtain sufficient strength and a reduction of vibrations of the devices. In order not to form closed spaces in the fin assembly, hitherto, the vibration reducing properties are converted only in one direction and disregarded in the other direction, for which purpose the ribs are arranged in parallel with each other. It is therefore the object of the present invention to provide cooling fins which have improved vibration reduction properties.
  • the inventive fin system builds on the generic state of the art in that at least a first pair of cooling fins is provided, which consists of two angular or curved cooling fins, which together form at least approximately a Y-shape.
  • Y-form is also intended here to include arrangements in which the lower leg of the Y is formed by two parallel and at least slightly spaced elements.
  • This cooling rib arrangement offers the advantage that the cooling ribs can extend in different directions due to the Y-shape and thus the vibration reduction properties can be designed such that they are optimal over the entire surface of the device to be cooled. Nevertheless, it is avoided in the cooling fin arrangement that create spaces in which water and dirt could accumulate.
  • the complete fin assembly according to the invention does not have a single obstacle to which water or dirt could accumulate.
  • the inventive cooling fin arrangement thus combines the three aspects of cooling, the two-dimensional vibration reduction and the avoidance of formation of water and dirt accumulation. If the cooling fin arrangement is aligned in such a way that the Y-shape narrows the inflowing air flow, then there is also the effect that the air flow is compressed by the tapered Y-shape, whereby the flow velocity increases and for better cooling properties provides.
  • the invention can be further developed in that the two cooling ribs of the at least one first pair of cooling ribs are spaced apart from one another so that a guide groove is formed between them in order to be able to remove deposits.
  • the cooling fin arrangement is attached to the device in such a way that the guide groove runs in the direction of gravity or the direction of air flow, so that the deposits are discharged downwards or backwards due to gravity or air flow.
  • the invention advantageously characterized by the fact that the cooling fin arrangement is symmetrical, wherein a cooling fin of the cooling fin pair lies on one side of the line of symmetry and the other cooling fin on the other side of the symmetry line.
  • a symmetrical design facilitates the manufacture of the fin system, since both the design and the mold production or machining is facilitated and thus more cost-effective.
  • the cooling rib arrangement can be developed such that the cooling rib arrangement is substantially symmetrical and partially honeycomb-shaped. The honeycomb structure partially formed by the fin assembly prevents a weakness in strength from forming on the approximate line of symmetry.
  • At least a second pair of cooling fins is provided, which consists of two rectilinear cooling fins, which together form a V-shape. Due to the shape of this second pair of cooling ribs, which is preferably arranged with respect to the direction of gravity above the first pair of cooling ribs or with respect to the direction of the air flow, the surface on which the cooling rib arrangement is mounted can be better utilized without causing any obstacles, which can be detrimental to the removal of water and dirt.
  • the two cooling fins of the second pair of fins are spaced apart so that a gap is formed between them in order to be able to remove deposits.
  • the cooling fin arrangement according to the invention can be configured such that a cooling rib of the second pair of cooling ribs lies at least partially on one side of the approximate line of symmetry and extends with a distance. section extends beyond the approximate line of symmetry and the other cooling fin lies on the other side of the approximate Syiranetrieline and extends maximally to the approximate line of symmetry.
  • the two cooling fins of the second pair of cooling fins are spaced apart from one another according to the partial honeycomb structure, so that a paired offset gap is formed between them in order to remove the deposits and at the same time take into account the strength.
  • the invention provides a gear actuator with a cooling fin arrangement according to any one of the preceding aspects of the invention, which provides the above advantages in a metaphorical manner.
  • the invention provides a use of such a fin assembly, wherein the fin assembly is oriented such that an airflow impinging on the fin assembly is compressed by the V-shaped legs of the Y-shape.
  • This use has the advantage that, in addition to the advantages already mentioned, there is also the effect that the air flow is compressed by the tapered Y-shape, whereby the flow rate increases and provides for better cooling properties.
  • the invention provides a use of such a fin assembly, wherein the fin assembly is oriented so that the foot of the Y-shape downwards in terms of gravity. In this use, in addition to the advantages already described water and dirt are discharged by gravity down.
  • Figure 1 is a plan view of the cooling fin assembly according to the invention according to a first embodiment of the invention.
  • Figure 2 is a plan view of the cooling fin assembly according to the invention according to a second embodiment of the invention.
  • FIG. 1 shows a top view of the inventive cooling fin arrangement according to a first embodiment of the invention.
  • the cooling fin arrangement is symmetrical, wherein the line of symmetry in Figure 1 extends vertically and centrally.
  • the cooling fin arrangement is attached to a device, preferably a gear actuator, such that in FIG. 1 the lower end of the cooling fin arrangement points substantially downward with respect to the direction of gravity 26 and / or that in FIG. 1 the upper end is of air flow 28 is flown.
  • the cooling fins are exposed to an air flow, which dissipates the waste heat from the cooling fins. ported.
  • the cooling fin assembly consists of a plurality of cooling fins arranged in pairs, with a cooling fin of a pair each on one side of the symmetry line and the other cooling fin of the same pair located on the other side of the line of symmetry.
  • Four first pairs of cooling fins 10, 12, 14, 16, each comprise two angular cooling fins.
  • These angle-shaped cooling ribs of the pairs of cooling ribs 10-16 preferably clamp on the side facing away from the symmetry line an angle ⁇ between 100 and 160 degrees, more preferably an angle ⁇ between 110 and 150 degrees, even more preferably an angle ⁇ between 120 and 140 degrees and ideally an angle ⁇ of 130 degrees.
  • each of the two cooling fins of a pair of cooling fins 10-16 form a Y-shape.
  • the legs of the angular cooling ribs of the pairs of cooling ribs 10-16 running essentially in the direction of the air flow 28 or the gravity 26 are parallel to one another. Between the legs of the pair of cooling fins 10 extending substantially in the direction of the air flow 28 or the force of gravity 26, a guide groove 18 is formed, via which water and dirt can be discharged either by gravity or by the air flow.
  • the distance between the parallel legs, which extend downward in FIG. 1, from the pair of cooling ribs to the pair of cooling ribs is greater. In FIG.
  • second pairs of cooling fins are arranged, which are identified in detail by reference numerals 20, 22 and 24.
  • the pairs of cooling fins 20-24 each comprise two rectilinearly extending cooling ribs, which together form a V-shape which, on the side facing the air flow 28 or in the case of gravity, avoids gravity, an angle ⁇ of preferably 70 to 120 degrees, more preferably 80 to 110 degrees and ideally He spans 90 to 100 degrees.
  • the cooling ribs of the pairs of cooling ribs 20-24 are all spaced apart from one another by the same amount at their ends facing the symmetry axis, so that a gap is formed between the cooling ribs of a pair of cooling ribs 20, 22, 24, through which water and impurities can be removed.
  • curved cooling ribs can also be provided with which similar effects can be achieved.
  • FIG. 2 shows a plan view of the inventive cooling fin arrangement according to a second embodiment of the invention.
  • the cooling rib arrangement is essentially symmetrical, that is to say not exactly symmetrical, whereby an approximate line of symmetry in FIG. 2 extends vertically and substantially in the center.
  • three first cooling pen pairs 10, 12, 16 are provided, each comprising two angular cooling fins. Based on the arrangement of these three pairs of cooling fins 10, 12, 16 to each other in this embodiment, the arrangement of the central approximate symmetry line is set.
  • each of the two cooling fins of a pair of cooling fins 10, 12, 16 at least partially form a Y-shape and are thus arranged substantially symmetrically to one another.
  • the pairs of cooling fins 10, 12, 16 are further formed so as to form a partial honeycomb structure.
  • the partial honeycomb structure results from the fact that the cooling ribs of the cooling rib pairs 10, 12, 16 each have a further, the Y-shape extending rectilinear upper section, which runs parallel to a lower portion of these cooling fins, so that these two parallel sections a portion arranged at an angle ⁇ with respect to the parallel portions are connected.
  • the legs or lower sections extending essentially in the direction of the air flow 28 or the gravity 26 and upper sections of the angular cooling ribs of the pairs of cooling fins 10, 12, 16 are parallel to one another. Between the substantially in the direction of the air flow 28 or the gravity 26 extending legs of the pair of cooling fins 10, in particular between a cooling fin of the pair of cooling fins 10 and a single cooling fin 30, a guide groove 18 is formed over the water and dirt either by gravity or on the Airflow can be discharged.
  • 10 second pair of cooling fins are arranged above the pair of cooling fins, in detail with the reference numerals 32, 20, 22 and 24 are marked.
  • the pairs of cooling ribs 32 and 20-24 each comprise two rectilinear cooling ribs, which together form a V-shape which, on the side facing the air flow 28 or in the case of gravity, avoids gravity, an angle ⁇ of preferably 70 to 120 Degrees, more preferably 80 to 110 degrees, and ideally 90 to 100 degrees.
  • the cooling ribs of the cooling rib pairs 32 and 20-24 are formed such that only one cooling rib of a corresponding pair of cooling ribs extends over the approximate axis of symmetry; For example, this extends a cooling rib with a cooling fin portion 34 beyond the approximate line of symmetry addition, as shown by way of example on a cooling fin of the cooling fin pair 32 in Figure 2.
  • the other cooling fin of the same pair of cooling fins 32 extends to at most the approximate symmetry line. Also in this case, the facing ends of the respective cooling ribs of the cooling rib pairs are spaced from each other by an amount such that an offset gap is formed between the cooling ribs of a pair of cooling ribs 32, 20, 22, 24 through which water and contaminants can be removed. Likewise, the cooling fins of the second pair of cooling fins 32, 20, 22, 24 have upper portions aligned parallel to the upper portions of the first fins 10, 12, 16, whereby the honeycomb structure is formed by both the first and second pairs of fins.
  • the cooling fin arrangement according to the second embodiment further comprises the individual cooling rib 30, which runs with its lower portion along the approximate line of symmetry and is angled with respect to its lower portion just before reaching the second pair of cooling fins 32.
  • the shape of this individual cooling rib 30 corresponds to that of the cooling ribs of the pairs of cooling ribs 10, 12, 16 and, in particular, extends between the cooling ribs of the cooling rib pairs 10 and 32.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

La présente invention concerne un dispositif à ailettes de refroidissement destiné au renforcement et au refroidissement d'un dispositif, comprenant une pluralité d'ailettes de refroidissement. Selon l'invention, le dispositif comprend au moins une première paire d'ailettes de refroidissement (10) qui sont se compose de deux ailettes de refroidissement angulaires ou arquées qui prennent ensemble au moins approximativement une forme de Y.
EP08784665A 2007-07-16 2008-07-09 Dispositif à ailettes de refroidissement en forme de y Withdrawn EP2179241A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710032973 DE102007032973B4 (de) 2007-07-16 2007-07-16 Y-förmige Kühlrippenanordnung
PCT/EP2008/005581 WO2009010218A1 (fr) 2007-07-16 2008-07-09 Dispositif à ailettes de refroidissement en forme de y

Publications (1)

Publication Number Publication Date
EP2179241A1 true EP2179241A1 (fr) 2010-04-28

Family

ID=39789823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08784665A Withdrawn EP2179241A1 (fr) 2007-07-16 2008-07-09 Dispositif à ailettes de refroidissement en forme de y

Country Status (3)

Country Link
EP (1) EP2179241A1 (fr)
DE (1) DE102007032973B4 (fr)
WO (1) WO2009010218A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2921779B1 (fr) * 2014-03-18 2017-12-06 Ansaldo Energia Switzerland AG Chambre de combustion avec manchon de refroidissement
CN113453510B (zh) * 2021-06-28 2022-10-11 航天科技控股集团股份有限公司 一种逆变器的散热结构

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB784250A (en) * 1954-05-12 1957-10-09 Kloeckner Humboldt Deutz Ag Air-cooled internal combustion engines with piston controlled ports
AT186766B (de) * 1955-02-28 1956-09-10 Schoeller Bleckmann Stahlwerke Geschweißtes Lufterhitzerelement
FR1127931A (fr) * 1955-06-13 1956-12-27 Maison Breguet Perfectionnement au refroidissement des machines électriques fermées
US3610975A (en) * 1969-07-30 1971-10-05 Westinghouse Electric Corp Dynamoelectric machine with improved cooling means
DE3661379D1 (en) * 1985-04-22 1989-01-12 Eaton Corp Fluid coupling device having improved heat dissipation
DE3540489A1 (de) * 1985-11-15 1987-05-21 Kloeckner Humboldt Deutz Ag Kuehlluftfuehrung in einer luftgekuehlten brennkraftmaschine
GB9608270D0 (en) * 1996-04-22 1996-06-26 Control Tech Dynamics Ltd Housing for an electrical machine
DE10232873A1 (de) * 2002-07-19 2004-01-29 Zf Friedrichshafen Ag Elektromechanischer Getriebesteller
AT414263B (de) * 2004-06-24 2006-10-15 Avl List Gmbh Luftgekühlte brennkraftmaschine mit innerer verbrennung
DE102004034320B4 (de) * 2004-07-15 2012-05-31 Ltg Ag Lufttechnische Einrichtung mit einem Lamellen aufweisenden Wärmetauscher sowie Wärmetauscher

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009010218A1 *

Also Published As

Publication number Publication date
WO2009010218A1 (fr) 2009-01-22
DE102007032973A1 (de) 2009-01-22
DE102007032973B4 (de) 2009-10-08

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