EP1293734A1 - Kühlanlage und zugehörige Schaltungsanordnung - Google Patents
Kühlanlage und zugehörige Schaltungsanordnung Download PDFInfo
- Publication number
- EP1293734A1 EP1293734A1 EP02017028A EP02017028A EP1293734A1 EP 1293734 A1 EP1293734 A1 EP 1293734A1 EP 02017028 A EP02017028 A EP 02017028A EP 02017028 A EP02017028 A EP 02017028A EP 1293734 A1 EP1293734 A1 EP 1293734A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compressor
- line
- compressors
- cooling
- line circuit
- 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.)
- Granted
Links
Images
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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- 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
- 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
-
- 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
- F25B2500/06—Damage
-
- 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
Definitions
- the invention relates to a cooling system and associated circuit arrangement for at least two different tempered cooling points operating at lower and upper temperature levels with at least two compressors, of which at least a compressor for the cooling point with an upper temperature level and at least one compressor for the cooling point work at a lower temperature level, with one each Suction and pressure side, on the one hand to the cooling points and on the other hand are connected to a condenser.
- Modern cooling systems are designed as composite systems to to achieve the maximum possible cooling capacity.
- a conception for composite systems that have already proven themselves in practice has, consists of compressors that make up their cooling capacity different, working at different temperature levels Deliver cold spots.
- the composite systems are in one Circulatory system interconnected in which every consumer or each cooling point a suction and its own independent Print page has.
- auxiliary devices such as condensers, oil separators and oil collectors, overpressure, check valves, refrigerant collectors and low pressure transducer available.
- the well-known composite systems are dimensioned so that they meet the different requirements of the cooling points can.
- Typical cooling points such as air conditioning systems, cooling shelves, Cold rooms or deep-freeze rooms are each separated supplied, for malfunctions in freezer rooms or on refrigerated shelves complex safety devices are required. These safety devices must have emergency power units and additional compressors take care of the emergency but are not required for daily care and remain unused in this case.
- the object of the present invention is to provide cooling systems type mentioned above with different cooling points to optimize that they can also be used in an emergency, e.g. at the Failure of a compressor, the operation and supply of the Can maintain cold spots.
- a cooling system solved the features specified in claims 1 and 4.
- the main idea is that the compressors are in two parallel line circuits on a common pressure line work so that in the event of a compressor failure the one line circuit another compressor of the second line circuit automatically takes over the work.
- the compressors are designed so that if the cooling point fails, the lower temperature level by switching on all compressors can be supplied for the upper temperature level.
- the cooling system according to the invention is the simplest Embodiment shown, the line circuit LK1 from two compressors 1 and 2 connected in parallel.
- the Line circuit LK1 in turn is a line circuit LK2 with another compressor 3.
- Both line circuits LK1 and LK2 work on a common pressure line 8, via an oil separator 9 with a condenser 10 is connected.
- the condenser 10 with a refrigerant collector is on the output side 11 connected, each of which a line 12, 13 to the Cold store for deep freeze 14 and on the cold store for a normal cooling 15 are placed.
- valve 4 which in the case shown here is designed as a solenoid valve for the emergency switchover to maintain the lower temperature at the cooling point 14.
- This valve 4 is forcibly switched, as soon as an external interference signal is given via line 23 to the magnetic switch.
- the solenoid valve When the solenoid valve is opened, the compressor 3 is connected directly to the line circuit 1. This ensures that the performance of the compressor 3 is also used to maintain the lower temperature level.
- a useful addition to the emergency is in the management team LK1 a check valve 7 is arranged in front of the compressor 2. This causes that in the event of a failure of the compressor 2 parallel wiring of the suction side 6 is switched off.
- cooling capacity required for deep freezing 26PS corresponds to 12KW.
- the cold room temperature of 5-7 ° C two compressor sets are used; one freezer set is sufficient for deep-freezing, so that if one compressor set for freezing fails, one compressor set in the cold room continues to operate as an emergency unit for freezing. It is also advantageous if the ratio of the cooling capacities from normal cooling to freezing is approximately 2: 1.
Abstract
Description
- Figur 1
- Schaltplan für eine erfindungsgemäße Kühlanlage.
sobald ein externes Störsignal über die Leitung 23 auf den Magnetschalter gegeben wird. Beim Öffnen des Magnetventils wird der Verdichter 3 direkt mit dem Leitungskreis 1 verbunden. Somit ist sichergestellt, dass auch die Leistung des Verdichters 3 für die Aufrechterhaltung des unteren Temperaturniveaus herangezogen wird.
Normalkühlung | 21m3 |
Tiefkühlung | 13m3 |
erforderliche Kälteleistung für die Tiefkühlung 26PS entsprechen 12KW. Bei der Kühlraumtemperatur von 5-7°C werden zwei Verdichtersätze verwendet, bei der Tiefkühlung reicht ein Verdichtersatz, so dass beim Ausfall eines Verdichtersatzes für die Tiefkühlung ein Verdichtersatz des Kühlraumes als Notaggregat für die Tiefkühlung weiterläuft. Es ist ferner vorteilhaft, wenn das Verhältnis der Kälteleistungen von Normalkühlung zu Tiefkühlung etwa 2:1 beträgt.
Claims (6)
- Kühlanlage für mindestens zwei unterschiedlich temperierte, auf unteren und oberen Temperaturniveaus arbeitenden Kühlstellen, mit mindestens zwei Verdichtern, von denen mindestens ein Verdichter für die Kühlstelle mit einem oberen Temperaturniveau und mindestens ein Verdichter für die Kühlstelle mit einem unteren Temperaturniveau arbeiten, mit jeweils einer Saug- und Druckseite, die einerseits an die Kühlstelle und andererseits an einen Verflüssiger angeschlossen sind,
dadurch gekennzeichnet, dass der oder die Verdichter (1, 2) für das obere Temperaturniveau in einem ersten Leitungskreis (LK1)
und der oder die Verdichter (3) für das untere Temperaturniveau in einem zweiten Leitungskreis (LK2) angeordnet sind, wobei auf der Saugseite zwischen dem ersten und zweiten Leitungskreis ein Ventil (4) angeordnet ist, das einem Störfall die Saugleitung (5) zum ersten Leitungskreis (LK1) öffnet,
und dass zwischen mindestens einem Verdichter (2) des ersten Leitungskreises (LK1), der dem 2. Leitungskreis (LK2) am nächsten liegt, auf der Saugseite (6) ein Rückschlagventil (7) angeordnet ist, wobei die parallel arbeitenden Verdichter(1, 2) des ersten Leitungskreises (LK1) mit dem oder den Verdichtern (3) des zweiten Leitungskreises (LK2) gemeinsam auf eine Druckleitung (8) geschaltet sind. - Kühlanlage nach Anspruch 1,
dadurch gekennzeichnet, dass die Verdichter (1, 2) parallel geschaltet sind. - Kühlanlage nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass das Ventil (4) ein zwangsgesteuertes Magnetventil ist, das mit einer druck- oder temperaturabhängigen- Messund Regeleinheit verbunden ist. - Schaltungsanordnung für Kühlanlagen, die auf mindestens zwei unterschiedlichen Temperaturniveaus arbeiten, bestehend aus Kältemittelleitungen für die Saug- und Druckseite,
dadurch gekennzeichnet, dass ein Leitungskreis (LK1) aus einem oder mehreren Verdichtern (1), (2) mit einer Saugleitung (16) aus dem Tiefkühlbereich verbunden ist und ein Leitungskreis (LK2) mit mindestens einem Verdichter (3) saugseitig mit einer Leitung (17) aus der Normalkühlung verbunden ist,
dass beide Leitungskreise (LK1) und (LK2) auf eine gemeinsame Druckleitung (8) geschaltet sind, die zu dem gemeinsamen Verflüssiger und dann zu den Kühlstellen mit unterschiedlichem Temperaturniveau führt
und dass eine Verbindung zwischen Saugleitungen (16) und (17) über ein Ventil (4) herstellbar ist, wenn bei einem Störfall ein Verdichter aus dem Leitungskreis LK1 oder LK2 ausfällt. - Schaltungsanordnung nach Anspruch 4,
dadurch gekennzeichnet, dass die Verdichter (1, 2) parallel geschaltet sind. - Schaltungsanordnung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Verdichterleistung der Verdichter für das obere Temperaturniveau so bemessen ist, dass sie im Störfall die Verdichterleistung für das untere Temperaturniveau übernehmen kann.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20115270U | 2001-09-15 | ||
DE20115270U DE20115270U1 (de) | 2001-09-15 | 2001-09-15 | Kühlanlage und zugehörige Schaltungsanordnung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1293734A1 true EP1293734A1 (de) | 2003-03-19 |
EP1293734B1 EP1293734B1 (de) | 2006-06-21 |
Family
ID=7961755
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02017028A Expired - Lifetime EP1293734B1 (de) | 2001-09-15 | 2002-07-27 | Kühlanlage und zugehörige Schaltungsanordnung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1293734B1 (de) |
AT (1) | ATE331192T1 (de) |
DE (2) | DE20115270U1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1548379A1 (de) * | 2003-12-24 | 2005-06-29 | Samsung Electronics Co., Ltd. | Kühlgerät und Steuerverfahren dafür |
RU2467261C2 (ru) * | 2008-06-12 | 2012-11-20 | Кэрриер Корпорейшн | Компрессор холодильного контура, холодильный контур и способ управления им |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3234749A (en) * | 1962-07-31 | 1966-02-15 | Lester K Quick | Compound refrigeration system |
EP0403239A2 (de) * | 1989-06-14 | 1990-12-19 | Hitachi, Ltd. | Verdichteranlage mit steuerbarer Leistung |
US5065591A (en) * | 1991-01-28 | 1991-11-19 | Carrier Corporation | Refrigeration temperature control system |
EP1050726A2 (de) * | 1999-05-05 | 2000-11-08 | Linde Aktiengesellschaft | Kälteanlage |
-
2001
- 2001-09-15 DE DE20115270U patent/DE20115270U1/de not_active Expired - Lifetime
-
2002
- 2002-07-27 EP EP02017028A patent/EP1293734B1/de not_active Expired - Lifetime
- 2002-07-27 AT AT02017028T patent/ATE331192T1/de not_active IP Right Cessation
- 2002-07-27 DE DE50207266T patent/DE50207266D1/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3234749A (en) * | 1962-07-31 | 1966-02-15 | Lester K Quick | Compound refrigeration system |
EP0403239A2 (de) * | 1989-06-14 | 1990-12-19 | Hitachi, Ltd. | Verdichteranlage mit steuerbarer Leistung |
US5065591A (en) * | 1991-01-28 | 1991-11-19 | Carrier Corporation | Refrigeration temperature control system |
EP1050726A2 (de) * | 1999-05-05 | 2000-11-08 | Linde Aktiengesellschaft | Kälteanlage |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1548379A1 (de) * | 2003-12-24 | 2005-06-29 | Samsung Electronics Co., Ltd. | Kühlgerät und Steuerverfahren dafür |
RU2467261C2 (ru) * | 2008-06-12 | 2012-11-20 | Кэрриер Корпорейшн | Компрессор холодильного контура, холодильный контур и способ управления им |
Also Published As
Publication number | Publication date |
---|---|
EP1293734B1 (de) | 2006-06-21 |
DE50207266D1 (de) | 2006-08-03 |
ATE331192T1 (de) | 2006-07-15 |
DE20115270U1 (de) | 2001-11-22 |
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