WO2005075927A1 - Method and device for cooling of air from compressors - Google Patents

Method and device for cooling of air from compressors Download PDF

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Publication number
WO2005075927A1
WO2005075927A1 PCT/SE2005/000063 SE2005000063W WO2005075927A1 WO 2005075927 A1 WO2005075927 A1 WO 2005075927A1 SE 2005000063 W SE2005000063 W SE 2005000063W WO 2005075927 A1 WO2005075927 A1 WO 2005075927A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling chamber
cooling
air
shell surface
flanges
Prior art date
Application number
PCT/SE2005/000063
Other languages
French (fr)
Inventor
Rune Widlund
Original Assignee
Scania Cv Ab (Publ)
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 Scania Cv Ab (Publ) filed Critical Scania Cv Ab (Publ)
Priority to DE112005000301T priority Critical patent/DE112005000301T5/en
Publication of WO2005075927A1 publication Critical patent/WO2005075927A1/en

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
    • 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
    • F28F1/16—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 integral with the element, e.g. formed by extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/002—Air treatment devices
    • 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
    • F28D1/04—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 tubular 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F28F9/0251—Massive connectors, e.g. blocks; Plate-like connectors
    • 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
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0282—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by varying the geometry of conduit ends, e.g. by using inserts or attachments for modifying the pattern of flow at the conduit inlet or outlet
    • 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 method according to the introductory part of the attached claim 1.
  • the invention further relates to a device according to the introductory part of the attached claim 5.
  • a previously known practice in trucks is the cooling of brake compressor air by means of a cooling loop made of steel tubing, the outside of which is cooled by air. Such cooling is not very effective and the cooling loop is relatively heavy and expensive to manufacture and contributes to the generation of disturbing noise.
  • a heat exchanger for compressed air which is known from GB-A-2 081 868 comprises a cylindrical chamber with an internal wall running axially or internal baffles protruding radially and distributed axially for changing the direction of air which enters the chamber radially via an inlet and leaves the chamber radially via an outlet situated diametrically opposite to the inlet, whereby cooling heat exchanger tubes are arranged in the chamber and sound-insulating facings are arranged inter alia on the inside or outside of the chamber.
  • a device of that kind is not very effective, because there is rapid air throughflow despite some change of direction, but above all the device is complicated and expensive.
  • the patent specification for an air cooler for compressed air known from US-A-3 934 990 refers to a device comprising a cooling chamber which has beneath it a swirl chamber into which air is introduced and from which air is introduced upwards into a peripheral columnar space of the cooling chamber for cooling by contact with the cooling chamber's outer surface which is provided with cooling flanges.
  • a device of that kind is bulky because of the separate chambers and is unsuited to performing a noise-damping function, and the sole function of the swirl chamber is to separate pollutants.
  • the object of the present invention is to provide a simple device which occupies little space and has good cooling effect and noise-damping capacity.
  • - Fig. 1 depicts schematically a section A-A according to Fig. 2 transversely to the axial direction of a first embodiment of a device according to the invention
  • - Fig. 2 depicts schematically an axial section B-B according to Fig. 3 of the device according to Fig. 1,
  • FIG. 3 is a schematic end-view of the device according to Figs. 1 and 2.
  • the device according to the invention comprises an internally substantially cylindrical cooling chamber 1 arranged and intended to allow air which requires cooling to pass through it from an inlet 2 to an outlet 3.
  • the air takes the form of compressor air, e.g. brake compressor air.
  • the inlet 2 is preferably arranged close to one end 4 of the cooling chamber so that the air enters the cooling chamber substantially tangentially, as shown schematically in Fig. 1, and in this case transversely to the axial extent of the cooling chamber.
  • the outlet 3 is preferably arranged close to the other end 5 of the cooling chamber and in such cases it is preferably so arranged that the air emerges substantially tangentially, with the same direction of rotation as at the inlet, and transversely to the axial extent of the cooling chamber, Fig. 1.
  • cooling chamber's wall 6 is arranged to conduct heat outwards from its inner shell surface 7 to its outer shell surface 9 which is provided with cooling flanges 8, the cooling chamber's wall 6 being preferably made of metal like the cooling flanges, e.g. of aluminium or an aluminium alloy.
  • the cooling chamber comprises both a portion 10 made axially in one piece, preferably extruded, comprising said cooling flanges, and two end portions 11.
  • the cooling chamber has a substantially larger cross-sectional area than the air supply line (not depicted), with the result that the air velocity decreases as the air enters the cooling chamber so that a long cooling dwell time in the cooling chamber is provided and noise-generating pressure shocks are damped.
  • cooling flanges run along the cooling chamber's outer shell surface in a spiral configuration (not depicted) in order to increase by a certain proportion the total length of cooling flanges.
  • the method, as also the function, of the device according to the invention may be regarded as substantially indicated above.
  • the tangential air supply causes the air to pass through the cooling chamber in a substantially rotating configuration along the cooling chamber's inner shell surface, resulting in effective cooling by the cooling effect of the cooling chamber's wall.
  • the noise caused by pressure shocks from the compressor is damped by the air being allowed to expand in the cooling chamber, with the result that the device combines cooling and noise damping.
  • the dimensions of the device and the ratio between the cross-sectional areas of the inlet, cooling chamber and outlet may be varied within broad limits to cater for particular requirements.
  • the total cooling capacity can easily be increased by increasing the length of the cooling chamber.
  • the cooling flanges may be manufactured separately and thereafter attached, e.g. by welding, to the cylindrical cooling chamber.
  • connection pieces 14, 15 which connect to holes 12, 13 in the cooling chamber's wall and are each provided with their respective flow duct 16, 17.
  • the device is advantageous for the device to be mounted by means of holes (not depicted) provided for the purpose in suitable cooling flanges.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Transportation (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

Method for cooling of compressor air with simultaneous noise damping, whereby the air is caused to pass through an internally cylindrical cooling chamber (1) from an inlet (2) to an outlet (4). The method is distinguished particularly by the fact that the air is caused to enter the cooling chamber (1) substantially tangentially, close to one end (4) of the cooling chamber, and to emerge from the cooling chamber close to the latter’s other end (5), so that it passes through the cooling chamber in a substantially rotating configuration along the cooling chamber’s inner shell surface (7), heat transmitted from which is conducted outwards to the cooling chamber’s outer shell surface (9) which is provided with cooling flanges (8). The invention also relates to a device for cooling of compressor air with simultaneous noise damping.

Description

Method and device for cooling of air from compressors
Background
1. Technical field
The present invention relates to a method according to the introductory part of the attached claim 1.
The invention further relates to a device according to the introductory part of the attached claim 5.
2. Description of the state of the art
A previously known practice in trucks is the cooling of brake compressor air by means of a cooling loop made of steel tubing, the outside of which is cooled by air. Such cooling is not very effective and the cooling loop is relatively heavy and expensive to manufacture and contributes to the generation of disturbing noise.
A heat exchanger for compressed air which is known from GB-A-2 081 868 comprises a cylindrical chamber with an internal wall running axially or internal baffles protruding radially and distributed axially for changing the direction of air which enters the chamber radially via an inlet and leaves the chamber radially via an outlet situated diametrically opposite to the inlet, whereby cooling heat exchanger tubes are arranged in the chamber and sound-insulating facings are arranged inter alia on the inside or outside of the chamber. A device of that kind is not very effective, because there is rapid air throughflow despite some change of direction, but above all the device is complicated and expensive.
The patent specification for an air cooler for compressed air known from US-A-3 934 990 refers to a device comprising a cooling chamber which has beneath it a swirl chamber into which air is introduced and from which air is introduced upwards into a peripheral columnar space of the cooling chamber for cooling by contact with the cooling chamber's outer surface which is provided with cooling flanges. A device of that kind is bulky because of the separate chambers and is unsuited to performing a noise-damping function, and the sole function of the swirl chamber is to separate pollutants.
The object of the present invention is to provide a simple device which occupies little space and has good cooling effect and noise-damping capacity.
Summary of the invention
The object of the invention is achieved by a method and a device according to the attached independent claims.
Further advantages are achieved inter alia by versions according to the respective dependent claims.
Brief description of the drawings
The invention is described in more detail below with reference to embodiments and the attached drawings, in which:
- Fig. 1 depicts schematically a section A-A according to Fig. 2 transversely to the axial direction of a first embodiment of a device according to the invention, - Fig. 2 depicts schematically an axial section B-B according to Fig. 3 of the device according to Fig. 1,
- Fig. 3 is a schematic end-view of the device according to Figs. 1 and 2.
Detailed description of preferred embodiments
According to a preferred embodiment, the device according to the invention comprises an internally substantially cylindrical cooling chamber 1 arranged and intended to allow air which requires cooling to pass through it from an inlet 2 to an outlet 3. According to a preferred embodiment, the air takes the form of compressor air, e.g. brake compressor air.
The inlet 2 is preferably arranged close to one end 4 of the cooling chamber so that the air enters the cooling chamber substantially tangentially, as shown schematically in Fig. 1, and in this case transversely to the axial extent of the cooling chamber.
The outlet 3 is preferably arranged close to the other end 5 of the cooling chamber and in such cases it is preferably so arranged that the air emerges substantially tangentially, with the same direction of rotation as at the inlet, and transversely to the axial extent of the cooling chamber, Fig. 1.
In addition, the cooling chamber's wall 6 is arranged to conduct heat outwards from its inner shell surface 7 to its outer shell surface 9 which is provided with cooling flanges 8, the cooling chamber's wall 6 being preferably made of metal like the cooling flanges, e.g. of aluminium or an aluminium alloy.
Moreover, according to preferred embodiments the cooling chamber comprises both a portion 10 made axially in one piece, preferably extruded, comprising said cooling flanges, and two end portions 11.
It is also preferred that the cooling chamber has a substantially larger cross-sectional area than the air supply line (not depicted), with the result that the air velocity decreases as the air enters the cooling chamber so that a long cooling dwell time in the cooling chamber is provided and noise-generating pressure shocks are damped.
It is also preferred that the cooling flanges run along the cooling chamber's outer shell surface in a spiral configuration (not depicted) in order to increase by a certain proportion the total length of cooling flanges. The method, as also the function, of the device according to the invention may be regarded as substantially indicated above.
The tangential air supply causes the air to pass through the cooling chamber in a substantially rotating configuration along the cooling chamber's inner shell surface, resulting in effective cooling by the cooling effect of the cooling chamber's wall. In addition, the noise caused by pressure shocks from the compressor is damped by the air being allowed to expand in the cooling chamber, with the result that the device combines cooling and noise damping.
The invention is described above in relation to examples in the form of preferred embodiments. Further embodiments, as also minor modifications and additions, are of course conceivable without departing from the basic concept of the invention.
Thus the dimensions of the device and the ratio between the cross-sectional areas of the inlet, cooling chamber and outlet may be varied within broad limits to cater for particular requirements. In addition, the total cooling capacity can easily be increased by increasing the length of the cooling chamber. The cooling flanges may be manufactured separately and thereafter attached, e.g. by welding, to the cylindrical cooling chamber.
The inlet and outlet are advantageously connected by means of connection pieces 14, 15 which connect to holes 12, 13 in the cooling chamber's wall and are each provided with their respective flow duct 16, 17.
It is advantageous for the device to be mounted by means of holes (not depicted) provided for the purpose in suitable cooling flanges.
The invention is thus not to be regarded as limited to the embodiments indicated above but may be varied within its scope indicated by the attached claims.

Claims

Claims
1. Method for cooling of compressor air with simultaneous noise damping, whereby the air is caused to pass through an internally substantially cylindrical cooling chamber from an inlet to an outlet, characterised in that the air is caused to enter the cooling chamber (1) substantially tangentially, close to one end (4) of the cooling chamber, and is caused to emerge from the cooling chamber close to the latter' s other end (5), so that the air passes through the cooling chamber in a substantially rotating configuration along the cooling chamber's inner shell surface (7), heat transmitted from which is conducted outwards to the cooling chamber's outer shell surface (9) which is provided with cooling flanges (8).
2. A method according to claim 1, characterised in that the velocity of the air decreases as the air enters the cooling chamber as a result of the cooling chamber being provided with a larger cross-sectional area than the air supply line.
3. A method according to claim 1 or 2, characterised in that the air emerges from the cooling chamber substantially tangentially.
4. A method according to claim 1, 2 or 3, characterised in that the cooling chamber comprises not only an axial, preferably extruded, portion (10) made of aluminium or an aluminium alloy, with integral cooling flanges, but also end portions (11).
5. A device for cooling of compressor air with simultaneous noise damping, comprising an internally substantially cylindrical cooling chamber arranged to allow the air to pass through it from an inlet to an outlet, characterised in that the inlet (2) is arranged close to one end (4) of the cooling chamber (1) so that the air enters the cooling chamber substantially tangentially, in that the outlet (3) is arranged close to the cooling chamber's other end (5), and in that the cooling chamber's wall (6) is arranged to conduct heat outwards from its inner shell surface (7) to its outer shell surface (9) which is provided with cooling flanges (8).
6. A device according to claim 5, characterised in that the cooling chamber has a substantially larger cross-sectional area than the air supply line.
7. A device according to claim 5 or 6, characterised in that the outlet (3) is so arranged that the air emerges substantially tangentially and with the same direction of rotation as at the inlet.
8. A device according to claim, 5, 6 or 7, characterised in that the cooling chamber comprises both an axial, preferably extruded, portion (10) made in one piece and of aluminium or an aluminium alloy with cooling flanges, and end portions (11).
9. A device according to claim, 5, 6, 7 or 8, characterised in that the cooling flanges run along the cooling chamber's outer shell surface in a spiral configuration.
PCT/SE2005/000063 2004-02-10 2005-01-24 Method and device for cooling of air from compressors WO2005075927A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112005000301T DE112005000301T5 (en) 2004-02-10 2005-01-24 Method and apparatus for cooling air from compressors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0400262-2 2004-02-10
SE0400262A SE527575C2 (en) 2004-02-10 2004-02-10 Methods and apparatus for air cooling at compressors

Publications (1)

Publication Number Publication Date
WO2005075927A1 true WO2005075927A1 (en) 2005-08-18

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Family Applications (1)

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PCT/SE2005/000063 WO2005075927A1 (en) 2004-02-10 2005-01-24 Method and device for cooling of air from compressors

Country Status (3)

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DE (1) DE112005000301T5 (en)
SE (1) SE527575C2 (en)
WO (1) WO2005075927A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9457785B2 (en) 2012-10-30 2016-10-04 Bendix Commercial Vehicle Systems, Llc Heat-exchange dryer apparatus, system and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009039751B4 (en) * 2009-09-02 2011-05-12 Atlas Copco Energas Gmbh Compressed gas cooler, in particular for compressors

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2037102A (en) * 1933-07-01 1936-04-14 Vipond Benjamin Leslie Muffler
US3516231A (en) * 1968-05-24 1970-06-23 Brakemaster Corp Aftercooler
US3934990A (en) * 1972-03-17 1976-01-27 Stratoflex, Inc. Air cooler and cleaner for compressed air
US4026685A (en) * 1975-12-16 1977-05-31 Wagner Electric Corporation Flow reversing regenerative air dryer
GB2081868A (en) * 1980-08-07 1982-02-24 Applegate G Improvements in or relating to heat exchangers and/or silencers
US20020162649A1 (en) * 2001-05-01 2002-11-07 Fineblum Solomon S. Double vortex heat exchanger

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2037102A (en) * 1933-07-01 1936-04-14 Vipond Benjamin Leslie Muffler
US3516231A (en) * 1968-05-24 1970-06-23 Brakemaster Corp Aftercooler
US3934990A (en) * 1972-03-17 1976-01-27 Stratoflex, Inc. Air cooler and cleaner for compressed air
US4026685A (en) * 1975-12-16 1977-05-31 Wagner Electric Corporation Flow reversing regenerative air dryer
GB2081868A (en) * 1980-08-07 1982-02-24 Applegate G Improvements in or relating to heat exchangers and/or silencers
US20020162649A1 (en) * 2001-05-01 2002-11-07 Fineblum Solomon S. Double vortex heat exchanger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9457785B2 (en) 2012-10-30 2016-10-04 Bendix Commercial Vehicle Systems, Llc Heat-exchange dryer apparatus, system and method

Also Published As

Publication number Publication date
SE0400262D0 (en) 2004-02-10
SE0400262L (en) 2005-08-11
DE112005000301T5 (en) 2006-12-28
SE527575C2 (en) 2006-04-11

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