EP0607101A1 - Système de retour d'huile de lubrification pour compresseur frigorifique - Google Patents

Système de retour d'huile de lubrification pour compresseur frigorifique Download PDF

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Publication number
EP0607101A1
EP0607101A1 EP94610002A EP94610002A EP0607101A1 EP 0607101 A1 EP0607101 A1 EP 0607101A1 EP 94610002 A EP94610002 A EP 94610002A EP 94610002 A EP94610002 A EP 94610002A EP 0607101 A1 EP0607101 A1 EP 0607101A1
Authority
EP
European Patent Office
Prior art keywords
oil
compressors
compressor
pressure
level
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Withdrawn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
EP94610002A
Other languages
German (de)
English (en)
Inventor
Johansen Bent
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.)
BIRTON AS
Original Assignee
BIRTON AS
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 BIRTON AS filed Critical BIRTON AS
Publication of EP0607101A1 publication Critical patent/EP0607101A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F25B31/00—Compressor arrangements
    • F25B31/002—Lubrication
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/075—Details of compressors or related parts with parallel compressors

Definitions

  • the invention concerns an apparatus for the control of the oil level in refrigerating compressors run in parallel and comprising an oil separator.
  • Refrigerating compressors run in parallel normally comprise a number of refrigerating compressors mounted on a common chassis and are put in operation in a number commensurate with the instant cooling capacity requirement. Thus they are to be regarded as a capacity controlled refrigerating machine.
  • the compressors are switched on by an automatic control device, and the starting sequence of the compressors is changed according to a predetermined plan in order that all compressors will have the same total running time, whereby a uniform wear will be achieved.
  • the refrigerating compressors may be of the type having the shaft passing through a stuffing box for belt drive or direct coupling to a motor, or in semi-hermetic or hermetic construction with a built-in motor.
  • the refrigerating compressors have a certain amount of lubricating oil in the sump/motor casing or in the crank case which must not fall below a certain level on order to ensure correct lubrication and/or oil pressure.
  • the cooling plant Since the refrigerating compressor will always have a certain oil consumption during running, which is carried via the refrigerant from the compressors into the cooling circuit the cooling plant is always constructed in order to conduct the oil back to the crank case or sump of the refrigerating compressors by means of suitable oil separating means.
  • the difference pressure element is an orifice of reduced diameter.
  • the difference pressure element is a calibrated tube.
  • the difference pressure element is an adjustable valve whereby the pressure drop may be easily adjusted when the plant is extended.
  • the plant is constructed with an oil separator with oil return to the suction side of the refrigerating plant which is connected via a small pressure drop to the crank case/sump of each compressor, and in that a small diameter tube is connected between pipe stubs placed in the sump of each compressor at a level corresponding to the desired oil level. Since the pressure in the suction side of each compressor is communicating freely with the crank case/sump of the compressor, and since there is a pressure difference between the suction side of the suction side of the plant and the crank case because of the pressure difference element, those compressors which are running will suck oil through the small pipes which are connected.
  • the drawing shows compressors 1, 2, 3, and 4 which are connected to suction lines 5, 6 and pressure lines 7, respectively.
  • the compressors are fitted into a rack which is not shown, and the compressors 1 and 2 are physically disposed above the compressors 3 and 4.
  • the compressors such refrigerant vapours from the cooling plant through the suction lines 5, 6 and compress the vapours and send them along in a gaseous state to the pressure lines 7, 8 to a condensor, not shown, in which the refrigerant is condensed to the liquid state.
  • lubrication occurs in that there is an amount of oil in the sump or crankcase of each compressor S, as shown at compressor 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
EP94610002A 1993-01-14 1994-01-14 Système de retour d'huile de lubrification pour compresseur frigorifique Withdrawn EP0607101A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK40/93 1993-01-14
DK4093A DK4093A (da) 1993-01-14 1993-01-14 Anlæg til tilbageføring af smøreolie i kølekompressorer

Publications (1)

Publication Number Publication Date
EP0607101A1 true EP0607101A1 (fr) 1994-07-20

Family

ID=8089064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94610002A Withdrawn EP0607101A1 (fr) 1993-01-14 1994-01-14 Système de retour d'huile de lubrification pour compresseur frigorifique

Country Status (2)

Country Link
EP (1) EP0607101A1 (fr)
DK (1) DK4093A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0961091A2 (fr) * 1998-05-26 1999-12-01 Linde Aktiengesellschaft Installation frigorifique combinée et procédé pour faire fonctionner une installation frigorifique combinée
EP0961090A2 (fr) * 1998-05-26 1999-12-01 Linde Aktiengesellschaft Installation frigorifique combinée et procédé pour faire fonctionner une installation frigorifique combinée
EP1550832A1 (fr) * 2003-12-10 2005-07-06 Linde Kältetechnik GmbH & Co.KG Système frigorifique (de type complexe) et procédé d'utilisation d'un système frigorifique (de type complexe)
WO2009039873A1 (fr) * 2007-09-28 2009-04-02 Carrier Corporation Circuit de réfrigérant et procédé pour gérer de l'huile dans celui-ci

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3386262A (en) * 1966-10-31 1968-06-04 Trane Co Refrigeration apparatus with compressors in parallel
FR2189689A1 (fr) * 1972-06-19 1974-01-25 Westinghouse Electric Corp
US4411141A (en) * 1981-02-06 1983-10-25 Mitsubishi Denki Kabushiki Kaisha Parallel operation compressor type refrigerating apparatus
EP0438835A2 (fr) * 1990-01-24 1991-07-31 Arneg S.P.A. Installation frigorifique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3386262A (en) * 1966-10-31 1968-06-04 Trane Co Refrigeration apparatus with compressors in parallel
FR2189689A1 (fr) * 1972-06-19 1974-01-25 Westinghouse Electric Corp
US4411141A (en) * 1981-02-06 1983-10-25 Mitsubishi Denki Kabushiki Kaisha Parallel operation compressor type refrigerating apparatus
EP0438835A2 (fr) * 1990-01-24 1991-07-31 Arneg S.P.A. Installation frigorifique

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0961091A2 (fr) * 1998-05-26 1999-12-01 Linde Aktiengesellschaft Installation frigorifique combinée et procédé pour faire fonctionner une installation frigorifique combinée
EP0961090A2 (fr) * 1998-05-26 1999-12-01 Linde Aktiengesellschaft Installation frigorifique combinée et procédé pour faire fonctionner une installation frigorifique combinée
EP0961090A3 (fr) * 1998-05-26 2000-03-15 Linde Aktiengesellschaft Installation frigorifique combinée et procédé pour faire fonctionner une installation frigorifique combinée
EP0961091A3 (fr) * 1998-05-26 2000-03-15 Linde Aktiengesellschaft Installation frigorifique combinée et procédé pour faire fonctionner une installation frigorifique combinée
EP1550832A1 (fr) * 2003-12-10 2005-07-06 Linde Kältetechnik GmbH & Co.KG Système frigorifique (de type complexe) et procédé d'utilisation d'un système frigorifique (de type complexe)
WO2009039873A1 (fr) * 2007-09-28 2009-04-02 Carrier Corporation Circuit de réfrigérant et procédé pour gérer de l'huile dans celui-ci
CN101809384B (zh) * 2007-09-28 2012-12-12 开利公司 制冷剂回路和用于管理制冷剂回路中的油的方法

Also Published As

Publication number Publication date
DK4093A (da) 1994-09-12
DK4093D0 (da) 1993-01-14

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