EP0080916A1 - Installation frigorifique à rendement amélioré à multimotocompresseurs - Google Patents

Installation frigorifique à rendement amélioré à multimotocompresseurs Download PDF

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Publication number
EP0080916A1
EP0080916A1 EP82402068A EP82402068A EP0080916A1 EP 0080916 A1 EP0080916 A1 EP 0080916A1 EP 82402068 A EP82402068 A EP 82402068A EP 82402068 A EP82402068 A EP 82402068A EP 0080916 A1 EP0080916 A1 EP 0080916A1
Authority
EP
European Patent Office
Prior art keywords
compressors
installation
motor
total power
refrigeration
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.)
Ceased
Application number
EP82402068A
Other languages
German (de)
English (en)
French (fr)
Inventor
Emile Sanzey
Pierre Gosset
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.)
FSB
Original Assignee
FSB
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 FSB filed Critical FSB
Publication of EP0080916A1 publication Critical patent/EP0080916A1/fr
Ceased 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
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control 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
    • 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
    • F25B2400/0751—Details of compressors or related parts with parallel compressors the compressors having different capacities

Definitions

  • the present invention relates to a refrigeration installation with improved efficiency with multi-compressors.
  • the known refrigeration installations with multi-compressors are usually installations comprising several motor-compressors of identical powers, mounted in parallel.
  • the present invention having the aim of avoiding these drawbacks or wasting energy, makes it possible to produce an economic refrigeration installation with multimotocompressors, capable in its operation to get as close as possible to the refrigeration needs requested, and therefore to achieve appreciable energy savings and excellent efficiency.
  • the refrigeration installation with improved efficiency, with multi-compressors comprises at least one refrigeration unit having, between a common suction manifold and a common discharge line, several motor-compressors of different powers mounted in parallel.
  • a refrigeration installation produced according to the invention comprises at least one group having several motor compressors of different powers, the values of which are chosen so as to obtain, for a given power, a greater number of combi of these motor compressors, reflecting a maximum number of fractional values of this total power and at all levels of the latter allowing the installation to respond as closely as possible to the refrigeration needs requested.
  • This number of combinations of motor compressors of different powers is, at least greater than that obtained in a known refrigeration installation having the same number of motor compressors whose powers are identical.
  • FIGS. 1 and 2 a refrigeration installation having a refrigeration group of four motor-compressors, produced according to the invention is shown.
  • the four motor compressors in this group respectively have powers corresponding to 15%, 20%, 30% and 35% of the total power.
  • twelve combinations of motor compressors indicated in the area below the line B in FIG. 3 make it possible to obtain powers corresponding to 15%, 20%, 30%, 35%, 45%, 50%, 55%, 65%, 70%, 80%, 85%, 100% of the total power of the installation.
  • a known refrigeration installation which also comprises four motor-compressors but of identical powers and each representing 25% of the total power, only four combinations of these motor-compressors are obtained and indicated in the zone below line A of FIG. 3 and provide four powers corresponding to 25%, 50%, 75%, 100% of the total power of the installation.
  • Figures 4 and 5 show the adaptability of the known refrigeration plant and that of the invention, indicated in Figure 3 to the same requested refrigeration requirements represented by identical CDEF ... OPQR curves.
  • the installation produced according to the invention is thus capable of meeting the refrigeration needs requested in a more suitable manner than that of the known installation. Better efficiency is obtained and an appreciable energy saving is achieved.
  • FIGS. 1 and 2 only one group of motor compressors of different powers 1, 2, 3 and 4 is represented. These compressors are mounted in parallel between a common suction manifold 5 and a pipe discharge common 6. During their operation the motor compressors 1 to 4 respectively suck through the manifold 5 of the refrigerant gas coming from the points of use 7 and discharge it through the line 6, the oil separator 8 and the condenser 9 , in a common tank 10 which supplies liquid refrigerant to the points of use 7.
  • each of these motor compressors comprises a low pressure pressure switch 11, 12, 13, 14 and a high pressure pressure switch 15, 16, 17, 18.
  • the starting and stopping of the motor compressors 1 to 4 are provided by low pressure pressure switches 11 to 14 which have an offset setting for example with respect to each other.
  • the high pressure pressure switches 15 to 18 protect the installation by stopping their corresponding motor-compressors as soon as the high pressure exceeds a predetermined level, deemed inadmissible.
  • Motor compressors 1 to 4 are each fitted with a differential oil safety pressure switch 19, 20, 21, 22.
  • the refrigeration system can also be fitted with a low pressure pressure switch 23 which triggers an audible and / or light alarm in the case of a too low pressure detected at the suction manifold 5, and a high pressure pressostat 24 which triggers an audible and / or light alarm before the high pressure safety pressure switches 15 to 18 stop the motor compressors 1 to 4.
  • High pressure switches 25, 26, 27 can be fitted to control the starting of the cooling fans 28, 29, 30 of the condenser 9.
  • an electronic system 31 automatically ensures the selection of the combinations of motor-compressors, the operating control in order to achieve an optimal efficiency of the installation in satisfying the refrigeration needs requested.
  • This electronic system 31 comprises a single low pressure tap by a low pressure sensor 32 in which a pressure variation in the suction manifold 5 generates an electrical signal intended to be interpreted by a electronic regulator 33 and an electronic unit of the microprocessor type 34 which give a combination of motor-compressor, the best suited to meet the demand for cold demand and act on control devices 35 to start these motor-compressors.
  • This system 31 also includes a high pressure outlet by a high pressure sensor 36 in which a pressure variation in the discharge line 6 produces an electrical signal intended to be interpreted by an electronic regulator 37 and the electronic unit 34 which react on control devices 35 to ensure the operational safety of the installation.
  • the other functions such as those of control, regulation, operation, signaling, defrosting are also performed in a known manner by the electronic system 31.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
EP82402068A 1981-11-24 1982-11-10 Installation frigorifique à rendement amélioré à multimotocompresseurs Ceased EP0080916A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8121960 1981-11-24
FR8121960A FR2517037A1 (fr) 1981-11-24 1981-11-24 Installation frigorifique a rendement ameliore a multimotocompresseurs

Publications (1)

Publication Number Publication Date
EP0080916A1 true EP0080916A1 (fr) 1983-06-08

Family

ID=9264303

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82402068A Ceased EP0080916A1 (fr) 1981-11-24 1982-11-10 Installation frigorifique à rendement amélioré à multimotocompresseurs

Country Status (2)

Country Link
EP (1) EP0080916A1 (enrdf_load_stackoverflow)
FR (1) FR2517037A1 (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0253928A1 (en) * 1986-07-22 1988-01-27 Margaux Controls Inc. Compressor refrigeration control system
EP0308532A1 (de) * 1987-09-23 1989-03-29 VIA Gesellschaft für Verfahrenstechnik mbH Drucklufttrockner
DE4436985A1 (de) * 1994-10-06 1996-04-11 Schubert Frank Binär quantisierte Leistungssteuerung von Wärmepumpenanlagen zur Steigerung der Jahresarbeitszahl und der Kühl-/Heizleistungsanpassung
GB2367353A (en) * 2000-09-13 2002-04-03 Ian David Wood Improvements in or relating to cold storage
WO2004068046A1 (en) * 2003-01-24 2004-08-12 Bristol Compressors, Inc. System and method for stepped capacity modulation in a refrigeration system
US6837068B2 (en) 2001-03-13 2005-01-04 Applied Design And Engineering Limited Airflow management in cold storage appliances
US6915657B1 (en) 1999-09-13 2005-07-12 Applied Design And Engineering Limited Cold-storage appliance
CN115388569A (zh) * 2022-06-14 2022-11-25 比艾克莱检测技术(上海)有限公司 基于权重计算的制冷装置及其控制方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH234063A (de) * 1941-11-19 1944-09-15 Sulzer Ag Wärmepumpenanlage mit mindestens zwei Verdichterstufen.
US3988904A (en) * 1974-12-05 1976-11-02 H. A. Phillips & Co. Refrigeration system
FR2422122A1 (fr) * 1978-04-03 1979-11-02 Pet Inc Dispositif de commande de pression d'aspiration pour un systeme de refrigeration a compresseurs multiples

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH234063A (de) * 1941-11-19 1944-09-15 Sulzer Ag Wärmepumpenanlage mit mindestens zwei Verdichterstufen.
US3988904A (en) * 1974-12-05 1976-11-02 H. A. Phillips & Co. Refrigeration system
FR2422122A1 (fr) * 1978-04-03 1979-11-02 Pet Inc Dispositif de commande de pression d'aspiration pour un systeme de refrigeration a compresseurs multiples

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0253928A1 (en) * 1986-07-22 1988-01-27 Margaux Controls Inc. Compressor refrigeration control system
EP0308532A1 (de) * 1987-09-23 1989-03-29 VIA Gesellschaft für Verfahrenstechnik mbH Drucklufttrockner
DE4436985A1 (de) * 1994-10-06 1996-04-11 Schubert Frank Binär quantisierte Leistungssteuerung von Wärmepumpenanlagen zur Steigerung der Jahresarbeitszahl und der Kühl-/Heizleistungsanpassung
US6915657B1 (en) 1999-09-13 2005-07-12 Applied Design And Engineering Limited Cold-storage appliance
GB2367353A (en) * 2000-09-13 2002-04-03 Ian David Wood Improvements in or relating to cold storage
GB2367353B (en) * 2000-09-13 2003-10-29 Ian David Wood Improvements in or relating to cold storage
US6837068B2 (en) 2001-03-13 2005-01-04 Applied Design And Engineering Limited Airflow management in cold storage appliances
US6901767B2 (en) 2001-03-13 2005-06-07 Applied Design And Engineering Limited Use of heat in cold storage appliances
US6925833B2 (en) 2001-03-13 2005-08-09 Applied Design And Engineering Limited Airflow management in cold storage appliances
US6941766B2 (en) 2001-03-13 2005-09-13 Applied Design And Engineering Limited Airflow management in cold storage appliances
US7159415B2 (en) 2001-03-13 2007-01-09 Applied Design And Engineering Limited Drawer storage
WO2004068046A1 (en) * 2003-01-24 2004-08-12 Bristol Compressors, Inc. System and method for stepped capacity modulation in a refrigeration system
CN115388569A (zh) * 2022-06-14 2022-11-25 比艾克莱检测技术(上海)有限公司 基于权重计算的制冷装置及其控制方法

Also Published As

Publication number Publication date
FR2517037B1 (enrdf_load_stackoverflow) 1985-01-04
FR2517037A1 (fr) 1983-05-27

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19831117

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Effective date: 19850930

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Inventor name: SANZEY, EMILE

Inventor name: GOSSET, PIERRE