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EP1382927A2 - Kühlvorrichtung - Google Patents

Kühlvorrichtung Download PDF

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Publication number
EP1382927A2
EP1382927A2 EP03077306A EP03077306A EP1382927A2 EP 1382927 A2 EP1382927 A2 EP 1382927A2 EP 03077306 A EP03077306 A EP 03077306A EP 03077306 A EP03077306 A EP 03077306A EP 1382927 A2 EP1382927 A2 EP 1382927A2
Authority
EP
European Patent Office
Prior art keywords
chamber
cooling chamber
tubes
cooling device
tube plates
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Withdrawn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
EP03077306A
Other languages
English (en)
French (fr)
Other versions
EP1382927A3 (de
Inventor
Walter Bloksma
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.)
Kelvion Machine Cooling BV
Original Assignee
Bloksma BV
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 Bloksma BV filed Critical Bloksma BV
Publication of EP1382927A2 publication Critical patent/EP1382927A2/de
Publication of EP1382927A3 publication Critical patent/EP1382927A3/de
Withdrawn legal-status Critical Current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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • F28D7/0083—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids with units having particular arrangement relative to a supplementary heat exchange medium, e.g. with interleaved units or with adjacent units arranged in common flow of supplementary heat exchange medium
    • F28D7/0091—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids with units having particular arrangement relative to a supplementary heat exchange medium, e.g. with interleaved units or with adjacent units arranged in common flow of supplementary heat exchange medium the supplementary medium flowing in series through the units
    • 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
    • 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
    • F28D2021/0049—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for lubricants, e.g. oil coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
    • F28F2009/226—Transversal partitions
    • 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
    • F28F2265/16—Safety or protection arrangements; Arrangements for preventing malfunction for preventing leakage

Definitions

  • the invention relates to a combined cooling device having one or more gas/air cooling chambers and one or more fluid/oil cooling chambers.
  • the invention furthermore relates to a compressor such as a screw-type compressor, piston compressor, turbo compressor and the like, provided with such a cooling device.
  • Such cooling devices wherein the medium to be cooled is passed through both cooling chambers in tubes, are among other things used in oil-free screw-type compressors, such as for the food industry.
  • Combined coolers have the advantage of being compact, being simple to assemble, having a reduced weight, having a reduced cost price, etc.
  • the invention provides a cooling device comprising at least one gas or air cooling chamber and at least one fluid cooling chamber, particularly oil cooling chamber, positioned adjacently, as well as one or more tubes for passage of coolant, which tubes extend through both the air cooling chamber and the fluid cooling chamber, in which between the adjacently placed walls of the air cooling chamber and the fluid cooling chamber, a separation chamber is placed through which the tubes extend, in which in the separation chamber means are provided that engage on the outer surface of the tubes for intercepting a fluid flow past said outer surface.
  • the interception means form physical means that have been placed in stationary connection or contact with the outer surface of the tubes.
  • the interception means comprise an intermediate plate, through which the tubes extend. The leaking oil then comes into contact with the intermediate plate and is thus deflected.
  • the tubes are attached in the intermediate plate by rolling.
  • the separation chamber is preferably provided with a discharge for leakage fluid, so that the leakage can be determined, which is of importance for testing the cooling device.
  • the intermediate plate divides the separation chamber into two sub-chambers, means being provided for keeping both sub-chambers at the same pressure. Because at both sides of the intermediate plate the same pressure prevails, no force oriented in tube direction is exerted on the oil leaking past the tubes, as a result of which the leakage flow is stopped.
  • the means for keeping both sub-chambers at the same pressure comprise passages from each sub-chamber to the surrounding area, the pressure in the sub-chambers then being kept at the ambient pressure.
  • the means for keeping both sub-chambers at the same pressure comprise passages from the one sub-chamber to the other, such as through the intermediate plate.
  • the intermediate plate may extend substantially transverse to the tubes.
  • the interception and discharge of the leaking oil is improved when the tubes extend substantially horizontally.
  • the invention provides a cooling device comprising at least one gas or air cooling chamber and at least one fluid cooling chamber, particularly oil cooling chamber, positioned adjacently, as well as one or more tubes for passage of coolant, which tubes extend through both the air cooling chamber and the fluid cooling chamber, which air cooling chamber and fluid cooling chamber at least at the sides facing each other are limited by tube plates, a separation chamber being formed between both tube plates, in which separation chamber an intermediate plate has been placed which is positioned at a distance from both tube plates, the tubes extending through the tube plates and the intermediate plate.
  • the spaces between the intermediate plate and the tube plates are at the same pressure.
  • both spaces are provided with a discharge for leakage fluid from the fluid cooling chamber.
  • Pressure equalizing may optionally also take place via the discharge.
  • the tube plates and the intermediate plate form one mountable unity.
  • a cooling device comprising at least one gas or air cooling chamber and at least one fluid cooling chamber, particularly oil cooling chamber, positioned adjacently, as well as one or more tubes for passage of coolant, which tubes extend through both the air cooling chamber and the fluid cooling chamber, as well as a housing having circumferential walls surrounding the air cooling chamber and the fluid cooling chamber, which air cooling chamber and fluid cooling chamber at least at the sides facing each other are limited by tube plates, a separation chamber being formed between both tube plates, the tube plates extending in outward direction at least almost to the profile defined by the circumferential walls.
  • the tube plates can now move along with the tubes, as a result of which the normal stress (tensile and pressure) in the tubes cannot become too high. It is now possible to place the oil cooling chamber, which before always had to be fixedly positioned at the location of the distribution chamber for the cooling water, at any given location in the cooling device.
  • the tube plates abut the inner surface of the circumferential walls via sealing rings.
  • the tube plates and the intermediate plate form one mountable unity.
  • This unity may advantageously be slidable in axial direction in and out of the cooling device.
  • the placement is tolerance insensitive so that afterwards a bundle can easily be replaced.
  • the cooling device at one end is provided with a reversing or distribution chamber for cooling water and with a further tube plate for limitation of the distribution chamber to an adjacent cooling chamber, the further tube plate forming a slidable unity with the said intermediate plate and the tube plates, as well as with the ordinary intermediate plates between the air cooling chambers.
  • an intermediate plate is placed in the separation chamber which intermediate plate is positioned at a distance from both tube plates, the tubes extending through the tube plates and the intermediate plate and being clamped in them.
  • the spaces between the intermediate plate and the tube plates advantageously are at the same pressure and are both provided with a discharge for leakage fluid from the fluid cooling chamber.
  • FIG 1 shows a combined cooling device 1 for for instance an oil-free compressor.
  • the cooling device 1 in the example comprises an oil cooling chamber 2 and an air cooling chamber 3, provided with circumferential walls 8 and 9, respectively.
  • the oil cooling chamber 2 is closed off by a tube plate 6, which forms the limitation of a cooling water space 5 for reversing the cooling water, limited by a cover plate 4.
  • drain passages 32 have been provided.
  • tubes 7 extend through the tube plate 6, in figure 1 in substantially horizontal direction, through the oil cooling chamber 2 and subsequently through the air cooling chamber 3.
  • the cooling device is limited by a distribution chamber and connections for the cooling water (not shown).
  • the oil cooling chamber 2 defines an inner space 10, in which cooling lamellas 30 have been arranged, which are in cooling contact with the tubes 7, only one of which is shown.
  • the air cooling chamber 3 has been provided with a space 11, in which cooling lamellas 31 have been placed that are also in cooling contact with the tubes 7.
  • the cooling lamellas are clamped on the tubes in the usual manner by means of a mandrel through expansion.
  • the oil cooling chamber has a supply 12 for supplying oil in the direction B, and a discharge 13 for discharge of oil in the direction C.
  • the air cooling chamber 3 has a supply 14 for air in the direction D, and a discharge 15 for discharge of air in the direction E.
  • the circumferential walls 8 and 9 of the oil cooling chamber 2 and the air cooling chamber 3 end at a distance from each other, a closing ring 23 being placed between both circumferential walls 8 and 9, which closing ring is substantially U-shaped.
  • the legs of the U-shaped closing ring 23 have been turned with end edges 23a, which fit in chambers 19 and 20 that have been formed in the end edges of the circumferential walls 8 and 9. The turned edges 23a then abut 0-rings or sealing rings 21, 22.
  • an assembly 16 Radially within the turned edges 23a and sealing rings 21, 22 an assembly 16 has been fittingly placed, which assembly comprises a first tube plate 17 and a second tube plate 18, which seal the oil cooling chamber 2 and the air cooling chamber 3, respectively, and pass the tubes 7.
  • the tube plates 17 and 18 have an outer diameter which is slightly smaller than the inner diameter D1 of the circumferential walls 8 and 9. As a result the assembly 16 is snugly accommodated in the circumferential walls 8 and 9. The same goes for the tube plate 6.
  • Both tube plates 17 and 18 are spaced apart, and in between them accommodate a tube plate 24, which with the tube plates 17 and 18 and their turned edges 17a and 18a, defines chambers 26 and 27, respectively.
  • the closing ring 23 defines an annular chamber 25 with the turned edges 17a and 18a, which annular chamber 25 at the lower side of the cooling device 1 has been provided with a discharge opening 28 which can be controlled with discharge nipple 29.
  • the discharge nipple 29 can be opened so that the ambient pressure prevails in both chambers 26 and 27.
  • the tube plates 17 and 18 are attached to the tubes 7 in the usual manner.
  • the wall of tube 7 is expanded to bring the wall material of the tube 7 in close contact with the boundary of the passage in the tube plates 17 and 18.
  • the tube plates 17 and 18 form one unity with the tubes 7.
  • the tube plates 17 and 18 are able to move along in their entirety in the directions I, within the circumferential walls 8 and 9. Unwanted stress is thus prevented.
  • the tube plate 6 forms one unity with the tubes 7 and thus with the tube plates 17 and 18, and via an 0-ring 40 abuts the inner surface of the circumferential wall 8. After removal of the cover plate 4 the whole of tube plates 6, 17 and 18 with tubes 7 and cooling lamellas 30 can be slid out of the cooling chamber.
  • both chambers 26 and 27 are at ambient pressure, so that there is no pressure difference over the intermediate plate 24.
  • a pressure difference over the plate 24 can be counteracted by arranging one or more holes 50 in said plate, which holes connect the chambers 26 and 27 with each other, where room is present in the plate 24, particularly adjacent to the area where the tubes 7 are absent.
  • the arrangement according to the invention is also advantageous in the so-called compression with water, in which the oil cooling chamber is put under high pressure to test the oiltightness of the cooling device.
  • Use is made of the discharge opening in connection with the air cooling chamber 3 for simple reception of leakage water.
  • the passage of the tubes 7 through intermediate plate 24 need not take place with the usual clamp-fitting.
  • the tubes 7 can be rolled in only lightly. Due to the substantially even pressure on both sides the intermediate plate 24 need not ensure an airtight sealing but indeed an oiltight sealing.
  • a further advantage of the cooling device according to the invention is that whatever the underpressure in the air cooling chamber 3 might be, access of oil in the air cooling chamber cannot take place.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP03077306A 2002-07-19 2003-07-18 Kühlvorrichtung Withdrawn EP1382927A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1021111 2002-07-19
NL1021111A NL1021111C2 (nl) 2002-07-19 2002-07-19 Koelinrichting.

Publications (2)

Publication Number Publication Date
EP1382927A2 true EP1382927A2 (de) 2004-01-21
EP1382927A3 EP1382927A3 (de) 2005-09-14

Family

ID=29775086

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03077306A Withdrawn EP1382927A3 (de) 2002-07-19 2003-07-18 Kühlvorrichtung

Country Status (2)

Country Link
EP (1) EP1382927A3 (de)
NL (1) NL1021111C2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008092677A1 (de) * 2007-01-31 2008-08-07 Behr Gmbh & Co. Kg Wärmetauscher
WO2009046956A1 (de) * 2007-10-13 2009-04-16 Modine Manufacturing Company Wärmetauscher, insbesondere abgaswärmetauscher

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1128665A (fr) * 1955-07-04 1957-01-09 Perfectionnement aux échangeurs thermiques tubulaires
DE2829121A1 (de) * 1978-07-03 1980-01-17 Funke Waerme Apparate Kg Waermeaustauscher
US4214443A (en) * 1978-09-01 1980-07-29 Perkins Engines Limited Marine engine manifold
NL8501514A (nl) * 1985-05-28 1986-12-16 Dow Chemical Nederland Overdrachts-leiding-warmteuitwisselaar.
AU2001296575A1 (en) * 2000-09-28 2002-04-08 L And M Radiator, Inc. Heat exchanger seal apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008092677A1 (de) * 2007-01-31 2008-08-07 Behr Gmbh & Co. Kg Wärmetauscher
US8627882B2 (en) 2007-01-31 2014-01-14 Behr Gmbh & Co. Kg Heat exchanger, exhaust gas recirculation system, and use of a heat exchanger
WO2009046956A1 (de) * 2007-10-13 2009-04-16 Modine Manufacturing Company Wärmetauscher, insbesondere abgaswärmetauscher

Also Published As

Publication number Publication date
NL1021111C2 (nl) 2004-01-23
EP1382927A3 (de) 2005-09-14

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