EP0961091B1 - Verbund(kälte)anlage und Verfahren zum Betreiben einer Verbund(kälte)anlage - Google Patents
Verbund(kälte)anlage und Verfahren zum Betreiben einer Verbund(kälte)anlage Download PDFInfo
- Publication number
- EP0961091B1 EP0961091B1 EP99108909A EP99108909A EP0961091B1 EP 0961091 B1 EP0961091 B1 EP 0961091B1 EP 99108909 A EP99108909 A EP 99108909A EP 99108909 A EP99108909 A EP 99108909A EP 0961091 B1 EP0961091 B1 EP 0961091B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compressor
- pressure
- oil
- compressors
- line
- 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
Links
- 238000000034 method Methods 0.000 title claims description 16
- 150000001875 compounds Chemical class 0.000 title claims description 7
- 238000009434 installation Methods 0.000 title claims 4
- 239000003921 oil Substances 0.000 claims abstract description 47
- 239000010725 compressor oil Substances 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 4
- 238000007906 compression Methods 0.000 claims 4
- 238000005057 refrigeration Methods 0.000 abstract description 8
- 230000000903 blocking effect Effects 0.000 abstract 1
- 210000000056 organ Anatomy 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 15
- 239000002131 composite material Substances 0.000 description 11
- 238000001816 cooling Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
-
- 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
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/06—Combinations of two or more pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/02—Surge control
- F04D27/0269—Surge control by changing flow path between different stages or between a plurality of compressors; load distribution between 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
- 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—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 relates to a method for operating a composite (cold) system at least two compressors operating at different suction pressures, wherein an oil compensation line between the compressor oil sumps of the compressors at least one shut-off device is arranged.
- EP-A-0 403 239 discloses one plant Compound (refrigeration).
- composite (refrigeration) system is one as described below Compound refrigeration system as well as composite systems that compress any media serve for other purposes.
- the object of the present invention is to provide a generic method for Operate such a composite (refrigeration) plant to specify where the mentioned Disadvantages are avoided.
- the inventive method for operating a composite (cold) system with draws at least two compressors operating at different suction pressures is characterized in that of the compressors between which an oil balance takes place the one (s) with the lower operating pressure is to be switched off (s) continue to operate while the one (s) with the higher operating pressure or is switched off, then via one between the compressor oil sumps the compressor arranged oil compensation line an oil compensation takes place and after oil equalization, an increase in pressure in the compressor that is on involved in oil balancing and at the lowest pressure becomes.
- Figures 1 to 4 each show a composite (cold) system with two, with different Suction pressures working compressors V1 and V2.
- Figures 1 and 3 - drawn in dashed lines - are arranged parallel to the compressors V1 and V2 Compressor V1 'and V2' shown. In principle, one or more can be used for each pressure level Compressors connected in parallel are used.
- Booster In the connection of the compressors V1 and V2 shown in FIGS. 1 and 2 it is a so-called. "Booster” arrangement, while in the Figures 3 and 4 shown interconnection of a so-called “satellite” arrangement speaks.
- the term “booster” arrangement stems from the fact that the pressure side of the Compressor V2 is connected to the suction side of compressor V1; that too compressing and transportable medium through the compressor V2 Compressor V1 is "pushed in”.
- Refrigeration systems of this type generally consist of at least two refrigerant circuits, wherein at least one refrigerant circuit of normal cooling and at least a refrigerant circuit is used for freezing. That relaxed with freezing Refrigerant is via line 1 of the suction side of the first compressor stage or the Compressor V2 supplied. In this, the refrigerant is pressurized over Line 3 brought refrigerant relaxed for the purpose of normal cooling compacted.
- the refrigerant compressed in compressor V2 is fed via line 2 together with the refrigerant introduced via line 3 of the suction side of the 2. Compressor stage or the compressor V1 supplied. In the compressor V1 that is Refrigerant compressed to the final pressure and then again via line 4 fed to the condenser and evaporator.
- the compressors V1 and V2 are between the compressor oil sumps an oil compensation line 5, in which at least one shut-off device 6 is provided, arranged.
- the oil compensation line 5 is during normal operation by the Shut-off device 6 closed.
- Compressor V2 is switched off from time to time and the shut-off device 6, which is preferably a valve open. Now there is a drain of the excess oil from the Oil reservoir of the compressor V1, in which the higher pressure prevails, into the oil reservoir of the compressor V2, which has a lower pressure.
- FIG. 2 A further possibility of increasing the pressure in the compressor V2 is shown in FIG. 2 shown.
- a check valve 8 is arranged in line 1.
- the composite (cold) systems shown in Figures 3 and 4 and procedures to operate a composite (cold) system differ from those in the Figures 1 and 2 shown composite (cold) systems or procedures only characterized in that the refrigerant compressed in the compressor V2, the compressor V2 is supplied via line 11, is not supplied to the compressor V1, but via Line 12 is mixed with the refrigerant compressed in the compressor V1 in line 14 becomes.
- the refrigerant to be compressed in the compressor V1 is fed to this via line 13 fed.
- the oil compensation line 15 between the compressor oil sumps Compressor V1 and V2, which can be closed by means of a shut-off element 16, are met same purpose as the oil compensation line 5 shown in Figures 1 and 2.
- the same applies to the connecting line 19 shown in FIG Shut-off device 20 is provided - it takes over the function of that in FIG. 2 connecting line 9 shown.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Other Air-Conditioning Systems (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Description
Claims (4)
- Verfahren zum Betreiben einer Verbundanlage bzw. Verbundkälteanlage mit wenigstens zwei, bei unterschiedlichen Saugdrücken arbeitenden Verdichtern, wobei zwischen den Verdichterölsümpfen der Verdichter eine Ölausgleichsleitung mit wenigstens einem Absperrorgan angeordnet ist, dadurch gekennzeichnet, daß von den Verdichtem, zwischen denen ein Ölausgleich stattfinden soll, der(die) jenige(n) mit dem niedrigeren Betriebsdruck abgestellt wird(werden), während der(die) jenige(n) mit dem höheren Betriebsdruck weiterbetrieben oder abgeschaltet wird(werden), anschließend über eine zwischen den Verdichterölsümpfen der Verdichter (V1, V1', V2, V2') angeordnete Ölausgleichsleitung (5, 15) ein . Öiausgleich stattfindet und nach erfolgtem Ölausgleich eine Druckerhöhung in demjenigen Verdichter, der an dem Ölausgleich beteiligt war und in dem der niedrigste Druck herrscht, durchgeführt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Druckerhöhung in demjenigen Verdichter, der an dem Ölausgleich beteiligt war und in dem der niedrigste Druck herrscht, durch Wärmeund/oder Druckzufuhr erfolgt.
- Verfahren nach Anspruch 1 oder 2, wobei wenigstens die Druckseite desjenigen Verdichters, der den höchsten Verdichtungsdruck aufweist, mit der Saugseite desjenigen Verdichters, der den niedrigsten Verdichtungsdruck aufweist, über wenigstens eine Verbindungsleitung, in der wenigstens ein Absperrorgan angeordnet ist, verbunden ist, dadurch gekennzeichnet, daß die Druckerhöhung über wenigstens eine Verbindungsleitung (9, 19), die die Druckseite desjenigen Verdichters (V1, V1'), der den höchsten Verdichtungsdruck aufweist, mit der Saugseite desjenigen Verdichters (V2, V2'), der den niedrigsten Verdichtungsdruck aufweist, verbindet, erfolgt.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Druckerhöhung durch Erwärmung des mittels des Verdichters (V2, V2') geförderten Mediums erfolgt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823524A DE19823524A1 (de) | 1998-05-26 | 1998-05-26 | Verbund(kälte)anlage und Verfahren zum Betreiben einer Verbund(kälte)anlage |
DE19823524 | 1998-05-26 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0961091A2 EP0961091A2 (de) | 1999-12-01 |
EP0961091A3 EP0961091A3 (de) | 2000-03-15 |
EP0961091B1 true EP0961091B1 (de) | 2003-12-03 |
Family
ID=7868979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99108909A Expired - Lifetime EP0961091B1 (de) | 1998-05-26 | 1999-05-05 | Verbund(kälte)anlage und Verfahren zum Betreiben einer Verbund(kälte)anlage |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0961091B1 (de) |
AT (1) | ATE255716T1 (de) |
DE (2) | DE19823524A1 (de) |
ES (1) | ES2212415T4 (de) |
PT (1) | PT961091E (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10015603A1 (de) * | 2000-03-29 | 2001-10-04 | Linde Ag | Kälteanlage |
DE10252083A1 (de) * | 2002-11-08 | 2004-05-27 | Linde Ag | Kälteanlage |
EP1886077A1 (de) * | 2005-05-30 | 2008-02-13 | Johnson Controls Denmark ApS | Öltrennung in einem kühlkreislauf |
FR2920839B1 (fr) * | 2007-09-07 | 2013-11-22 | Electricite De France | Procede et dispositif d'equilibrage d'huile entre compresseurs |
EP2221559B1 (de) * | 2009-02-19 | 2016-08-10 | Systemair AC S.A.S | Thermodynamische Anlage mit verbesserter Schmierung |
WO2012095186A1 (en) * | 2011-01-14 | 2012-07-19 | Carrier Corporation | Refrigeration system and method for operating a refrigeration system |
DE102013014543A1 (de) * | 2013-09-03 | 2015-03-05 | Stiebel Eltron Gmbh & Co. Kg | Wärmepumpenvorrichtung |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2844664A1 (de) * | 1978-10-13 | 1980-04-24 | Volkswagenwerk Ag | Verbrennungsmotorisch betriebene waermepumpe |
US4383802A (en) * | 1981-07-06 | 1983-05-17 | Dunham-Bush, Inc. | Oil equalization system for parallel connected compressors |
IT1144762B (it) * | 1981-09-07 | 1986-10-29 | Aspera Spa | Motocompressore ermetico per impianti frigoriferi e simili |
US4529061A (en) * | 1984-01-23 | 1985-07-16 | Deere & Company | Fluid level control system |
JP2865707B2 (ja) * | 1989-06-14 | 1999-03-08 | 株式会社日立製作所 | 冷凍装置 |
DK4093A (da) * | 1993-01-14 | 1994-09-12 | Birton As | Anlæg til tilbageføring af smøreolie i kølekompressorer |
JP4013261B2 (ja) * | 1994-06-29 | 2007-11-28 | ダイキン工業株式会社 | 冷凍装置 |
AU7501096A (en) * | 1995-11-02 | 1997-05-22 | Aaf-Mcquay Incorporated | Improved compressor arrangement and method of working the same |
EP0883784A1 (de) * | 1996-02-27 | 1998-12-16 | David N. Shaw | Aufgetriebene luftwärmepumpe |
-
1998
- 1998-05-26 DE DE19823524A patent/DE19823524A1/de not_active Withdrawn
-
1999
- 1999-05-05 EP EP99108909A patent/EP0961091B1/de not_active Expired - Lifetime
- 1999-05-05 ES ES99108909T patent/ES2212415T4/es not_active Expired - Lifetime
- 1999-05-05 DE DE59907913T patent/DE59907913D1/de not_active Expired - Lifetime
- 1999-05-05 AT AT99108909T patent/ATE255716T1/de not_active IP Right Cessation
- 1999-05-05 PT PT99108909T patent/PT961091E/pt unknown
Also Published As
Publication number | Publication date |
---|---|
ATE255716T1 (de) | 2003-12-15 |
DE19823524A1 (de) | 1999-12-02 |
ES2212415T3 (es) | 2004-07-16 |
EP0961091A3 (de) | 2000-03-15 |
ES2212415T4 (es) | 2004-09-16 |
EP0961091A2 (de) | 1999-12-01 |
DE59907913D1 (de) | 2004-01-15 |
PT961091E (pt) | 2004-04-30 |
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