EP1550832B1 - Système frigorifique (de type complexe) et procédé d'utilisation d'un système frigorifique (de type complexe) - Google Patents

Système frigorifique (de type complexe) et procédé d'utilisation d'un système frigorifique (de type complexe) Download PDF

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Publication number
EP1550832B1
EP1550832B1 EP04028680A EP04028680A EP1550832B1 EP 1550832 B1 EP1550832 B1 EP 1550832B1 EP 04028680 A EP04028680 A EP 04028680A EP 04028680 A EP04028680 A EP 04028680A EP 1550832 B1 EP1550832 B1 EP 1550832B1
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EP
European Patent Office
Prior art keywords
oil
compressors
container
shut
plane
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.)
Expired - Lifetime
Application number
EP04028680A
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German (de)
English (en)
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EP1550832A1 (fr
Inventor
Michael Cellar
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.)
Carrier Kaeltetechnik Deutschland GmbH
Original Assignee
Linde Kaeltetechnik GmbH
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Publication of EP1550832A1 publication Critical patent/EP1550832A1/fr
Application granted granted Critical
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Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04B39/02—Lubrication
    • F04B39/0207—Lubrication with lubrication control systems
    • 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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
    • 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
    • F25B31/004—Lubrication oil recirculating arrangements
    • 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—Component parts or details not otherwise provided for in this subclass
    • F25B2400/07—Details of compressors or related parts
    • F25B2400/075—Details of compressors or related parts with parallel compressors
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/16—Lubrication

Definitions

  • the invention relates to a compound (refrigeration) system, comprising a plurality of compressors arranged on two or more levels, wherein the compressors arranged on a plane are connected to each other via an oil equalization line document US-A-3,500,962 discloses such a system.
  • the invention relates to a method for operating such a composite (refrigeration) system.
  • composite (cold) plant is to be understood as a composite refrigeration plant as described below and compound systems that serve the compression of any media for other purposes.
  • German Patent Applications 198 23 524 and 198 23 525 disclose methods of oil equalization between compressors arranged on a plane. Problematic is an oil balance between several compressors whenever the compressors are arranged on two or more levels. An arrangement of several compressors on two or more levels is particularly advantageous or even necessary when a large number of compressors must be accommodated on a relatively small footprint. This is For example, in narrow engine rooms or in an outdoor installation, so if the compressor in a housing - possibly together with the one or more condensers - are arranged, the case.
  • Object of the present invention is to provide a generic composite (refrigeration) system and a generic method for operating such a compound (refrigeration) system, dispensed with in or on the use of wear-prone and fault prone ⁇ laptreguliersysteme, the lubricating oil supply of all compressors designed more reliable and the manufacturing costs can be reduced.
  • FIG. 1 Shown in the figure are two compressor levels E1 and E2, which are hereinafter referred to only as “levels”.
  • level E1 and E2 Three compressors V1, V2 and V3 (level E1) and V4, V5 and V6 (level E2) are arranged.
  • the compressors of a composite (refrigeration) system can also be arranged in three, four or more levels.
  • any number of compressors can be provided per level.
  • different compressors can be used on the individual levels, only they should - if possible - be of the same type.
  • At least one container B1 or B2 is now provided per level E1 or E2.
  • These containers B1 and B2 are dimensioned such that they are able to accommodate at least the minimum oil filling quantity required per level E1 or E2.
  • the containers B1 and B2 are connected via the respective oil equalization lines 1 (and line section 3) and 2 with their associated compressors V1 to V3 and V4 to V6 their level.
  • the lines 1 and 2 preferably run centrally to the sight glasses of VerêtrV1, V2 and V3 or V4, V5 and V6.
  • the containers B1 and B2 are also advantageously located in the middle between the compressors V1, V2 and V3 or V4, V5 and V6 their level E1 or E2 arranged.
  • the puncture of the lines 3 and 2 in the container B1 and B2 is preferably carried out centrally to the sight glasses of the compressor V1, V2 and V3 or V4, V5 and V6. This ensures that the oil level in the containers B1 or B2 is approximately equal to the oil levels prevailing in the compressors V1, V2 and V3 or V4, V5 and V6.
  • a shut-off device a is to be provided between the oil equalizing line 1 of the lowest level E1 and the collecting container B1 assigned to this level E1; this will normally be designed as a shut-off valve, preferably as a solenoid valve.
  • the container B1 of the lowest level E1 via a pressure line 4 with the pressure side of the composite (cold) system shut off - usually realized by a shut-off b - connected.
  • the two containers B1 and B2 in turn are connected to one another via a connecting line 5.
  • the connecting line 5 may be formed lockable; not shown in the figure.
  • the connecting line 5 is in this case to be arranged on the container B2 of the upper level E2 such that the container B2 is emptied during the oil balance only up to the desired level in the upper level E2 oil level.
  • the composite (refrigeration) system according to the invention is further proposed that at least one of the containers via a suction line to the suction side of the composite (cold) system is connected shut off.
  • the suction line (s) must or must be able to be shut off, as different pressure levels in the compressor housings and the suction line can occur during operation.
  • the connection of the container B1 and / or B2 via suction lines 6 and 7 with the suction side of the composite (cold) plant serves the purpose of being able to degas the container or containers B1 and B2 can. This may be necessary if the composite (refrigeration) system according to the invention is operated, for example, at high ambient temperatures and there is evaporation of the refrigerant (mixtures) from the oil.
  • This evaporated refrigerant (mixture) can then be discharged via the suction lines 6 and 7 to the suction side, whereby a trouble oil balance between the compressor and individual levels can be ensured. It has been shown that at normal room temperatures, this degassing is usually not required.
  • the composite (refrigeration) plant according to the invention further education, the compressors V1, V2 and V3 or V4, V5 and V6 assigned to a level in each case an oil level regulation.
  • the compressors V1, V2 and V3 or V4, V5 and V6 assigned to a level in each case an oil level regulation.
  • all state-of-the-art oil level regulation systems can be used.
  • the connecting line 5 may be arranged on the container B2 of the upper level E2 such that the container B2 can only be emptied to the (minimum) oil level desired in the upper level E2. If the line connecting the container B1 and B2 5 is formed lockable, it must be open during the above-described method step.
  • the shut-off device a disposed between the oil equalizing pipe 1 and the tank B1 of the lower level E1 is closed again; Subsequently, one or more compressors V1, V2 and / or V3 of the lower level E1 are put into operation.
  • one or more compressors V4, V5 and / or V6 of the upper level E2 can also be put into operation.
  • shut-off device b arranged in the pressure line 4 now remains open until the possibly required oil equalization between the containers B1 and B2 or the planes E1 and E2 and the compressors V4, V5 and V6 has taken place.
  • the compressors V4, V5 and V6 of the upper level E2 preferably remain switched off, so that (even) between them a sufficient oil balance can take place. If there is too much oil in the upper level E2, it passes via the connecting line 5 again into the lower container B1 or to the lower level E1.
  • the above-described method of the invention is always realized when a lack of oil is detected by appropriate measures in at least one of the compressor V1, V2, ....
  • the monitoring of oil levels in the compressor can be done manually and / or automatically.
  • the introduction of an oil balance phase can also be carried out manually and / or automatically.
  • an oil balance is usually initiated at certain, adjustable intervals as a rule.
  • the operating times of the compressors V1, V2, .... until their shutdown are to be chosen so that the minimum allowable oil level within the compressor due to the inevitably occurring during compressor operation oil displacement is not exceeded.
  • the stoppage phases of the compressor must be timed so that a sufficient oil balance between the compressors can be guaranteed and a significant impairment of the refrigeration supply by the compressor of the composite (refrigeration) system according to the invention is avoided.
  • inventive composite (cold) plant and the inventive method for operating a composite (cold) plant provide over the prior art, significant improvements, since it can be dispensed with wear-prone and trouble-prone ⁇ laptreguliersysteme.
  • inventive composite (cold) systems are lowered and at the same time a reliable lubricating oil supply to all compressors of the composite (refrigeration) system according to the invention is ensured.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lubricants (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Cultivation Of Plants (AREA)

Claims (6)

  1. Système frigorifique (de type complexe), comportant plusieurs compresseurs disposés sur deux ou plusieurs niveaux, les compresseurs disposés sur un même niveau étant reliés entre eux par une conduite compensatrice d'huile, caractérisé
    a) en ce qu'au moins un réservoir (B1, B2) est prévu par niveau (E1, E2),
    b) en ce que les réservoirs (B1, B2) sont dimensionnés de manière à pouvoir recueillir la quantité minimale d'huile exigée par niveau (E1, E2),
    c) en ce que les réservoirs (B1, B2) sont raccordés chacun à la conduite compensatrice d'huile (1, 2) de leur niveau (E1, E2),
    d) le réservoir (B1) du niveau inférieur (E1) étant raccordé à la conduite compensatrice d'huile (1) correspondante, ce raccord pouvant être fermé (a),
    e) en ce que le réservoir (B1) du niveau inférieur (E1) est raccordé par une conduite de pression (4) au côté de pression du système frigorifique (de type complexe), cette conduite pouvant être fermée (b), et
    f) en ce que les réservoirs (B1, B2) sont reliés entre eux par une conduite de connexion (5),
    g) ladite conduite de connexion (5) étant disposée sur le réservoir (B2) du niveau supérieur (E2) de manière que le réservoir (B2) ne puisse être vidangé que jusqu'au niveau d'huile souhaité au niveau supérieur (E2).
  2. Système frigorifique (de type complexe) selon la revendication 1, caractérisé en ce qu'au moins un des réservoirs (B1, B2) est raccordé par une conduite d'aspiration (6, 7) au côté d'aspiration du système frigorifique (de type complexe), ce raccord pouvant être fermé (c, d).
  3. Système frigorifique (de type complexe) selon la revendication 1 ou 2, caractérisé en ce qu'un système de régulation de niveau d'huile est affecté aux compresseurs (V1, V2, ...) de chaque niveau (E1, E2).
  4. Système frigorifique (de type complexe) selon l'une des revendications 1 à 3, caractérisé en ce que les réservoirs (B1, B2) sont raccordés entre eux, ce raccord pouvant être fermé.
  5. Procédé d'utilisation d'un système frigorifique (de type complexe) selon l'une des revendications précédentes, caractérisé
    a') en ce qu'au début d'une compensation d'huile entre les compresseurs (V1, V2, ...), tous les compresseurs (V1, V2, ...) sont désactivés et le dispositif de fermeture (a) ouvert, s'il était préalablement fermé, entre la conduite compensatrice d'huile (1) et le réservoir (B1) du niveau inférieur (E1),
    b') en ce que les compresseurs (V1, V2, ...) restent désactivés jusqu'à ce qu'une compensation d'huile ait été effectuée entre les compresseurs (V1, V2, ...) de chaque niveau (E1, E2) et entre les niveaux (E1, E2) au moyen de la conduite de connexion (5),
    c') en ce qu'à l'issue de la compensation d'huile, le dispositif de fermeture (a) présent entre la conduite compensatrice d'huile (1) et le réservoir (B1) du niveau inférieur (E1) est fermé,
    d') en ce qu'un ou plusieurs compresseurs (V1, V2, V3) du niveau inférieur (E1) sont mis en service,
    e') en ce qu'un dispositif de fermeture (b) présent dans la conduite de pression (4) est ouvert,
    f') ledit dispositif de fermeture (b) restant ouvert jusqu'à ce qu'une compensation d'huile éventuellement exigée ait été effectuée entre les réservoirs (B1, B2), et
    g') en ce qu'à l'issue de la compensation d'huile, le dispositif de fermeture (a) présent entre la conduite compensatrice d'huile (1) et le réservoir (B1) du niveau inférieur (E1) est ouvert.
  6. Procédé selon la revendication 5, caractérisé en ce que simultanément ou consécutivement à la mise en service d'un ou de plusieurs compresseurs (V1, V2, V3) du niveau inférieur (E1), un ou plusieurs compresseurs (V4, V5, V6) du niveau supérieur (E2) sont mis en service.
EP04028680A 2003-12-10 2004-12-03 Système frigorifique (de type complexe) et procédé d'utilisation d'un système frigorifique (de type complexe) Expired - Lifetime EP1550832B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10357556A DE10357556A1 (de) 2003-12-10 2003-12-10 Verbund(kälte)anlage und Verfahren zum Betreiben einer Verbund(kälte)anlage
DE10357556 2003-12-10

Publications (2)

Publication Number Publication Date
EP1550832A1 EP1550832A1 (fr) 2005-07-06
EP1550832B1 true EP1550832B1 (fr) 2006-10-18

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Application Number Title Priority Date Filing Date
EP04028680A Expired - Lifetime EP1550832B1 (fr) 2003-12-10 2004-12-03 Système frigorifique (de type complexe) et procédé d'utilisation d'un système frigorifique (de type complexe)

Country Status (4)

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EP (1) EP1550832B1 (fr)
AT (1) ATE343107T1 (fr)
DE (2) DE10357556A1 (fr)
ES (1) ES2274374T3 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2920838B1 (fr) * 2007-09-07 2009-11-27 Electricite De France Dispositif et procede d'equilibrage d'huile entre compresseurs
FR2920839B1 (fr) * 2007-09-07 2013-11-22 Electricite De France Procede et dispositif d'equilibrage d'huile entre compresseurs
RU2434185C1 (ru) * 2007-09-28 2011-11-20 Кэрриер Корпорейшн Контур хладагента и способ управления в нем масла
DK2198214T3 (da) * 2007-09-28 2011-06-27 Carrier Corp Kølemiddelkredsløb og fremgangsmåde til håndtering af olie deri
WO2011101029A1 (fr) * 2010-02-17 2011-08-25 Carrier Corporation Système frigorifique et procédé d'équilibrage des niveaux d'huile entre les compresseurs d'un système frigorifique
WO2013007310A1 (fr) * 2011-07-14 2013-01-17 Carrier Corporation Circuit de réfrigération à compensation d'huile
WO2014154046A1 (fr) * 2013-03-29 2014-10-02 艾默生环境优化技术(苏州)有限公司 Système de compresseur et procédé de commande associé
DE102013014543A1 (de) * 2013-09-03 2015-03-05 Stiebel Eltron Gmbh & Co. Kg Wärmepumpenvorrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3500962A (en) * 1969-05-01 1970-03-17 Vilter Manufacturing Corp Lubrication system for compressors
DK4093A (da) * 1993-01-14 1994-09-12 Birton As Anlæg til tilbageføring af smøreolie i kølekompressorer
DE19823525A1 (de) * 1998-05-26 1999-12-02 Linde Ag Verbund(kälte)anlage und Verfahren zum Betreiben einer Verbund(kälte)anlage

Also Published As

Publication number Publication date
ATE343107T1 (de) 2006-11-15
EP1550832A1 (fr) 2005-07-06
DE10357556A1 (de) 2005-07-14
DE502004001792D1 (de) 2006-11-30
ES2274374T3 (es) 2007-05-16

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