EP0889236A2 - Postrefroidisseur pour compresseur refroidi par air - Google Patents

Postrefroidisseur pour compresseur refroidi par air Download PDF

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Publication number
EP0889236A2
EP0889236A2 EP98107243A EP98107243A EP0889236A2 EP 0889236 A2 EP0889236 A2 EP 0889236A2 EP 98107243 A EP98107243 A EP 98107243A EP 98107243 A EP98107243 A EP 98107243A EP 0889236 A2 EP0889236 A2 EP 0889236A2
Authority
EP
European Patent Office
Prior art keywords
aftercooler
compressor
air
fan
high pressure
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Withdrawn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
EP98107243A
Other languages
German (de)
English (en)
Other versions
EP0889236A3 (fr
Inventor
Walter E. Goettel
Julie A. Krawczyk
Roger Drummond
Daniel G. Wagner
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.)
Westinghouse Air Brake Co
Original Assignee
Westinghouse Air Brake Co
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 Westinghouse Air Brake Co filed Critical Westinghouse Air Brake Co
Publication of EP0889236A2 publication Critical patent/EP0889236A2/fr
Publication of EP0889236A3 publication Critical patent/EP0889236A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • the present invention relates generally to air compressors providing compressed, high pressure air and more particularly to an AFTERCOOLER located in front of the air compressor and in front of a fan and shroud that draws air through the aftercooler and directs the same to the compressor.
  • United States Patent 5,106,270 to Goettel et al. discloses an integral compressor/aftercooler wherein air is compressed and thereby heated in the compressor. The heated air is then sent to the aftercooler to be reduced in temperature for the purpose of condensing water vapor contained in the heated air to liquid water. The liquid water is removed from the compressed air before it is used in braking systems of locomotives and railway cars connected to the locomotives.
  • the compressor and aftercooler shown in the Goettel et al. patent is a rather tall device, and most American made locomotives have room to accommodate the Goettel et al. compressor and aftercooler.
  • the actual height of the Goettel et al. compressor/aftercooler is brought about by the aftercooler 4 (in the patent) being located beneath a crank shaft 13, 14, as depicted in Figure 3 of Goettel et al. patent with the output of a high pressure cylinder 11 connected to the aftercooler by pipe 39.
  • the aftercooler is highly effective in reducing the temperature of compressed air leaving the compressor so that water vapor is condensed to liquid water for removal from a reservoir of compressed air in a locomotive.
  • the present invention provides a low profile compressor/aftercooler unit by locating the aftercooler in front of the compressor, rather than beneath the compressor crankshaft.
  • the aftercooler in the present invention is located also in front of a fan and shroud that directs ambient atmospheric air to the compressor for cooling the same after the ambient air passes through the aftercooler, i.e., the fan draws air through the aftercooler to provide effective cooling of hot compressed air in the aftercooler while simultaneously directing air to and past the compressor to cool the same.
  • a low profile "short crankcase" air compressor 10 is shown in side elevation.
  • a fan 12 and a shroud 14 In front of the compressor is a fan 12 and a shroud 14.
  • the shroud can be bolted to the front of the compressor, as shown.
  • a common shaft 16 can drive both the compressor and fan, through the invention is not limited thereto, i.e., separate drive shafts and power sources, such as electric motors can be used to separately drive the compressor and fan.
  • an aftercooler 18 In front of fan 12 and shroud 14, and thus in front of the compressor 10 and in general alignment with shaft 16, is located an aftercooler 18.
  • the aftercooler is shown suitably bolted to the shroud and compressor.
  • Aftercooler 18 includes heat exchange tubing 20 connected to a high pressure output pipe 22 of high pressure cylinder 24 of compressor 10. As disclosed in the above Goettel et al. patent, aftercooler 18 is effective in reducing the temperature of compressed air sent to the aftercooler tubing 20 from the compressor to a level near ambient for the purpose of condensing water vapor contained in the compressed air. The cooled, near ambient air leave aftercooler tubing 20 via a pipe 26 for passage to a main reservoir or reservoirs of a locomotive. In this manner liquid water is formed which can be drained from the main reservoir before the compressed air is used.
  • fan 12 performs its normal function of cooling the cylinders and cylinder heads of compressor 10 by drawing ambient atmospheric air through shroud 14 and directing the same to compressor 10 while simultaneously pulling ambient atmospheric air through aftercooler 18 and past its tubing 20 to cool the heated compressed air sent from the compressor to the aftercooler. Because the atmospheric air passes by tubing 20 containing heated compressed air, the atmospheric air directed through shroud 14 and to the compressor is heated somewhat by the aftercooler.
  • fan 12 still provides sufficient and efficient cooling of compressor 10 while simultaneously providing effective cooling of the compressed air in aftercooler tubing 20.
  • This latter function is verified by the data presented in the graph of Figure 2.
  • the high pressure (HP 24) discharge from compressor cylinder 24 rapidly rises to 325°F above ambient while the aftercooler discharge (AC 18) is at a temperature of 30 to 35°F above ambient. This is highly effective in condensing water vapor in the compressed air to liquid water for draining from systems using the compressed air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP98107243A 1997-07-01 1998-04-21 Postrefroidisseur pour compresseur refroidi par air Withdrawn EP0889236A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US88661497A 1997-07-01 1997-07-01
US886614 1997-07-01

Publications (2)

Publication Number Publication Date
EP0889236A2 true EP0889236A2 (fr) 1999-01-07
EP0889236A3 EP0889236A3 (fr) 2000-04-12

Family

ID=25389382

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98107243A Withdrawn EP0889236A3 (fr) 1997-07-01 1998-04-21 Postrefroidisseur pour compresseur refroidi par air

Country Status (6)

Country Link
EP (1) EP0889236A3 (fr)
JP (1) JPH1172083A (fr)
AU (1) AU733456B2 (fr)
BR (1) BR9801599A (fr)
CA (1) CA2231744C (fr)
ZA (1) ZA984082B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO322287B1 (no) * 2004-09-24 2006-09-11 Sperre Mek Verksted As Kjøleanordning for stempelmaskineri

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5106270A (en) 1991-01-10 1992-04-21 Westinghouse Air Brake Company Air-cooled air compressor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2150912A (en) * 1936-04-18 1939-03-21 Sullivan Machinery Co Air compressor
GB764087A (en) * 1953-05-11 1956-12-19 Bristol Pneumatic Tools Ltd Improvements in and relating to air compressors
FR1128406A (fr) * 1954-10-27 1957-01-04 Westinghouse Freins & Signaux Ensemble bloc et radiateur pour compresseurs
DE1271302B (de) * 1956-06-26 1968-06-27 Christian Steeb Werke K G Kuehler fuer Kompressoren
DE1916857A1 (de) * 1969-04-02 1970-10-15 Kaeser Kompressoren Mit seinem Antriebsmotor direkt gekuppelter Kompressor in Vertikalanordnung
DE2422448A1 (de) * 1974-05-09 1975-11-13 Knorr Bremse Gmbh Kompakte anordnung einer luftpressereinheit mit dem antriebsaggregat
US4311439A (en) * 1979-10-17 1982-01-19 Stofen Kenneth A Compressed air system
JPS61145887U (fr) * 1985-03-04 1986-09-09

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5106270A (en) 1991-01-10 1992-04-21 Westinghouse Air Brake Company Air-cooled air compressor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO322287B1 (no) * 2004-09-24 2006-09-11 Sperre Mek Verksted As Kjøleanordning for stempelmaskineri
US7819639B2 (en) 2004-09-24 2010-10-26 Sperre Mek. Verksted As Cooling device for piston machinery

Also Published As

Publication number Publication date
AU6354798A (en) 1999-01-14
CA2231744A1 (fr) 1999-01-01
JPH1172083A (ja) 1999-03-16
ZA984082B (en) 1998-11-20
CA2231744C (fr) 2004-12-14
EP0889236A3 (fr) 2000-04-12
BR9801599A (pt) 1999-05-25
AU733456B2 (en) 2001-05-17

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