EP0700737A2 - Procédé de fabrication d'un évaporateur pour une machine frigorifique à compression - Google Patents

Procédé de fabrication d'un évaporateur pour une machine frigorifique à compression Download PDF

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Publication number
EP0700737A2
EP0700737A2 EP95112053A EP95112053A EP0700737A2 EP 0700737 A2 EP0700737 A2 EP 0700737A2 EP 95112053 A EP95112053 A EP 95112053A EP 95112053 A EP95112053 A EP 95112053A EP 0700737 A2 EP0700737 A2 EP 0700737A2
Authority
EP
European Patent Office
Prior art keywords
metal sheets
coolant
metal
areas
channel
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Withdrawn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
EP95112053A
Other languages
German (de)
English (en)
Other versions
EP0700737A3 (fr
Inventor
Jürgen Dipl.-Ing. Grimm
Dieter Dipl.-Ing. Bitter
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.)
Krupp VDM GmbH
Original Assignee
Krupp VDM 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 Krupp VDM GmbH filed Critical Krupp VDM GmbH
Publication of EP0700737A2 publication Critical patent/EP0700737A2/fr
Publication of EP0700737A3 publication Critical patent/EP0700737A3/fr
Withdrawn legal-status Critical Current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
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
    • F28F3/14—Elements constructed in the shape of a hollow panel, e.g. with channels by separating portions of a pair of joined sheets to form channels, e.g. by inflation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
    • B21D53/045—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal by inflating partially united plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F25B39/022—Evaporators with plate-like or laminated elements
    • F25B39/024—Evaporators with plate-like or laminated elements with elements constructed in the shape of a hollow panel

Definitions

  • the invention relates to a method for producing an evaporator consisting of at least two metal sheets firmly connected to one another in the form of a weld or soldering with partially enlarged and different channel cross-sections for a compressor cooling device, first of all to form a cross-section of the cross-sections of the mutually uniform between the metal sheets to form a coolant channel running in a meandering manner connected metal sheets are formed into channels by internal pressure.
  • Such evaporators are regularly formed to form a cold room from correspondingly flat evaporator boards which, after the shaping and in the installed state, delimit one or more cold rooms of a cooling device on one side or enclose them on several sides and often also form the rear wall of such a cold room.
  • the shaping is usually carried out by compressed air, which is passed between the non-welded duct areas and one or both welded together via the internal pressure which arises there Boards deformed to form channel cross sections.
  • CFC hydrocarbon
  • An overpressure is then introduced into the area of the initially molten zinc layer, which presses the aluminum layers lying between the tool plates into the tool recesses, i.e. pressed into the milled recesses.
  • the tools are then provided with larger cutouts at the critical points to be expected later, so that the channel cross section assumes corresponding dimensions.
  • this method entails very high tool costs and is only to a small extent flexible in those cases in which enlarged cross-sections have to be provided for small series or for special cooling forms at locations other than the larger recessed areas present in the tool.
  • the method is advantageously suitable for evaporator boards which are manufactured according to the so-called rollbond process and are not dependent on external tools during their entire manufacture, which roughly contained the shape of the coolant channels as cutouts.
  • the areas of the coolant channel provided for the partial enlargement of the channel cross section are subjected to a heating action which only acts on the outside of a metal sheet.
  • the evaporator plate is made of sheet metal of the same strength, one weakens one of the two sheets with this design, so that a partial widening takes place due to an overexpansion of this sheet, while the other sheet continues its supporting function and is only slightly expanded.
  • This design can be further optimized in that the two metal sheets consist of different metals or metal alloys with different strengths.
  • the support effect of one or the other sheet can thus be increased or decreased and the respective expansion can be distributed to one or both sides in certain percentages.
  • the areas of the coolant channel provided for the partial enlargement of the channel cross-section are subjected to heating acting on the outside of the sheet consisting of a metal or a metal alloy of higher strength, the effect can be achieved that the sheet of higher strength has little, that However, sheet of lower strength is stretched more and thus the channel cross section is shifted to the area of the sheet of low strength. This has advantages in terms of later bends or in relation to the future installation situation.
  • the circuit board is advantageously constructed in such a way that the low-strength metal sheet is made of pure aluminum and the other, higher-strength metal sheet is made of an aluminum alloy.
  • the necessary temperatures are set very low and finely tunable in the range below 400 ° C and at the same time it is possible to influence the strength of the aluminum by adding alloying elements to one of the metal sheets.
  • a particularly advantageous design of the aluminum alloy contains max. 25% by weight of zirconium (Zr) and the rest aluminum.
  • the "softening temperature” shifts upwards by approx. 40 ° C, so that a safe distance necessary for the controllability of the formation of channels on one or the other sheet metal side between the soft points of the two Aluminum sheets is reached.
  • the heating on the outside of the aluminum alloy advantageously takes place up to a minimum temperature of 330 ° C.
  • the heating can be achieved in a particularly simple manner in that the channel cross sections in the region of the partial enlargement are designed as resistance conductors of a circuit.
  • the beginning and the end of the partial area to be widened in each case are provided with current-carrying pole shoes, as a result of which the sheet metal area between the pole shoes is heated up to a temperature which can be checked by a pyrometer and the internal pressure is expanded.
  • An applied minimum pressure of 6 bar for the second formation for the partial enlargement of the channel cross-section advantageously results in a rapid but not uncontrolled expansion with appropriate heating and thereby prevents oversized material thinning.
  • the internal pressure forming can be supported in that an auxiliary tool is created only in the area of the partial enlargement, which supports both metal sheets and keeps the material flow determinable.
  • An evaporator designed according to this method for a compressor cooling device which bounds one or more cooling rooms of a cooling device on one side or encloses several sides, has the partial enlargements of the coolant channel cross section in the areas that are outside the cooling rooms or in transition areas between cooling rooms.
  • An equally advantageous design of the evaporator consists in the fact that partial enlargements of the coolant channel cross section are also present in the area of bends or bends of the evaporator board.
  • evaporator board which, for example, encloses a cooling space on four sides, these can each be present over the entire width of the board in all the channel cross sections lying in the bend.
  • the partial enlargements of the coolant duct cross section are present in the region of the duct connections at the coolant inlet or at the coolant outlet.
  • a capillary line for the compressed coolant is usually led through the inner area of the coolant channel, so that only a ring cross-section exists around this capillary for removing the coolant.
  • the evaporator can be designed in a particularly advantageous manner in such a way that these regions are provided with partial extensions.
  • FIG. 1 shows the evaporator board 1 with its different cooling surfaces 2 and 3 and with the connecting webs 4 and 5 lying in the region of the bends in the further installation process.
  • the cooling channel 6 runs in a meandering manner within the evaporator board.
  • FIG. 2 shows some enlarged sections of the cooling channel, first in the area of the webs and in the area of the circuit board that will later be located in the cooling room.
  • Sections 7 and 8 of cooling channel 6 are partially expanded with the method according to the invention and have a substantially larger cross section than sections 9 and 10 lying in the area of the later interior cooling surface.
  • FIG. 3 shows another evaporator board 11, which is arranged within a schematically illustrated cooling space 12 and is sealed off from the environment by means of the housing insulation 13.
  • This evaporator board 11 also has curved web areas 14, 15 and 16, which are finally connected to the compressor 18 via the pipeline 17 outside the cooling chamber.
  • the web regions 14, 15 and 16 again show a larger cooling channel cross section, which corresponds approximately to the cross sections 7 and 8 shown in FIG. 2.
  • the web regions 14, 15 and 16 again show a larger cooling channel cross section, which corresponds approximately to the cross sections 7 and 8 shown in FIG. 2.
  • the evaporator board 11 only a one-sided expansion is provided, which thereby contains a cooling channel corresponding to the cross sections 9 and 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
EP95112053A 1994-09-10 1995-07-28 Procédé de fabrication d'un évaporateur pour une machine frigorifique à compression Withdrawn EP0700737A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4432340 1994-09-10
DE19944432340 DE4432340C1 (de) 1994-09-10 1994-09-10 Verfahren zur Herstellung eines Verdampfers für ein Kompressorkühlgerät

Publications (2)

Publication Number Publication Date
EP0700737A2 true EP0700737A2 (fr) 1996-03-13
EP0700737A3 EP0700737A3 (fr) 1996-06-05

Family

ID=6527952

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95112053A Withdrawn EP0700737A3 (fr) 1994-09-10 1995-07-28 Procédé de fabrication d'un évaporateur pour une machine frigorifique à compression

Country Status (3)

Country Link
EP (1) EP0700737A3 (fr)
DE (1) DE4432340C1 (fr)
HU (1) HU212748B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7708053B2 (en) 2000-06-30 2010-05-04 Alliant Techsystems Inc. Heat transfer system
US8066055B2 (en) 2000-06-30 2011-11-29 Alliant Techsystems Inc. Thermal management systems
US8109325B2 (en) 2000-06-30 2012-02-07 Alliant Techsystems Inc. Heat transfer system
US8136580B2 (en) 2000-06-30 2012-03-20 Alliant Techsystems Inc. Evaporator for a heat transfer system

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19639115C2 (de) * 1996-09-24 2003-08-07 Behr Gmbh & Co Plattenförmiges Wärmeübertragerelement
DE19721931A1 (de) * 1997-05-26 1998-12-03 Krupp Vdm Gmbh Verfahren zur Herstellung von Wärmetauschern sowie danach hergestellter Wärmetauscher
AT409232B (de) * 1999-10-19 2002-06-25 Vaillant Gmbh Verdampfer/kondensator einer sorptionspumpe
DE102006029821B3 (de) * 2006-06-28 2008-04-03 Lob Gmbh Wärmetauscher
DE102008051161B4 (de) 2008-10-10 2013-05-29 Highterm Research Gmbh Wirbelschichtreaktor sowie Einsatz für einen solchen Wirbelschichtreaktor
DE102017005325B4 (de) * 2017-06-02 2026-02-26 Audi Ag Verfahren zur Herstellung eines Bodens oder eines Deckels für ein Energiespeichergehäuse und Verfahren zur Herstellung eines Energiespeichergehäuses
DE102019110870A1 (de) * 2019-04-26 2020-10-29 Liebherr-Components Biberach Gmbh Kühlvorrichtung zum Kühlen einer Energiespeicher- und/oder Elektronikbaugruppe sowie Verfahren zu deren Herstellung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1920424A1 (de) 1968-04-22 1969-11-13 Olin Mathieson Verfahren zum Herstellen genau abgegrenzter Schweisszonen auf einem Metallblech oder Metallstreifen
DE1552044A1 (de) 1965-08-24 1970-11-26 Olin Mathieson Verfahren zur Herstellung von Hohlkoerpern

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1190611A (fr) * 1956-11-30 1959-10-14 Olin Mathieson Fabrication d'articles creux par gonflage d'une portion non réunie d'un flan
DE1122480B (de) * 1958-03-06 1962-01-25 Reynolds Metals Co Verfahren zur Herstellung von Hohlkoerpern durch Aufblaehung von Schichtkoerpern zwishen formbestimmenden Gegenlagern
US3196528A (en) * 1961-12-18 1965-07-27 Olin Mathieson Metal sheet article and process for making
DE1244422B (de) * 1964-12-29 1967-07-13 Ver Deutsche Metallwerke Ag Verfahren zum Gluehen kaltverfestigter Verbundbleche
GB1176572A (en) * 1967-05-16 1970-01-07 Olin Mathieson Method of Forming a Sheet Metal Panel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1552044A1 (de) 1965-08-24 1970-11-26 Olin Mathieson Verfahren zur Herstellung von Hohlkoerpern
DE1920424A1 (de) 1968-04-22 1969-11-13 Olin Mathieson Verfahren zum Herstellen genau abgegrenzter Schweisszonen auf einem Metallblech oder Metallstreifen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7708053B2 (en) 2000-06-30 2010-05-04 Alliant Techsystems Inc. Heat transfer system
US8066055B2 (en) 2000-06-30 2011-11-29 Alliant Techsystems Inc. Thermal management systems
US8109325B2 (en) 2000-06-30 2012-02-07 Alliant Techsystems Inc. Heat transfer system
US8136580B2 (en) 2000-06-30 2012-03-20 Alliant Techsystems Inc. Evaporator for a heat transfer system
US8752616B2 (en) 2000-06-30 2014-06-17 Alliant Techsystems Inc. Thermal management systems including venting systems
US9273887B2 (en) 2000-06-30 2016-03-01 Orbital Atk, Inc. Evaporators for heat transfer systems
US9631874B2 (en) 2000-06-30 2017-04-25 Orbital Atk, Inc. Thermodynamic system including a heat transfer system having an evaporator and a condenser

Also Published As

Publication number Publication date
HU212748B (en) 1996-10-28
DE4432340C1 (de) 1995-08-24
EP0700737A3 (fr) 1996-06-05
HU9502636D0 (en) 1995-11-28
HUT73005A (en) 1996-06-28

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