EP0085454B1 - Refrigeration apparatus - Google Patents

Refrigeration apparatus Download PDF

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Publication number
EP0085454B1
EP0085454B1 EP83200089A EP83200089A EP0085454B1 EP 0085454 B1 EP0085454 B1 EP 0085454B1 EP 83200089 A EP83200089 A EP 83200089A EP 83200089 A EP83200089 A EP 83200089A EP 0085454 B1 EP0085454 B1 EP 0085454B1
Authority
EP
European Patent Office
Prior art keywords
evaporator
circuit
condenser
compressor
pressure
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
Application number
EP83200089A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0085454A3 (en
EP0085454A2 (en
Inventor
Marinus Wilhelmus Matheus Avontuur
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.)
AVONTUUR MARINUS WILH M
Original Assignee
AVONTUUR MARINUS WILH M
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 AVONTUUR MARINUS WILH M filed Critical AVONTUUR MARINUS WILH M
Priority to AT83200089T priority Critical patent/ATE49048T1/de
Publication of EP0085454A2 publication Critical patent/EP0085454A2/en
Publication of EP0085454A3 publication Critical patent/EP0085454A3/en
Application granted granted Critical
Publication of EP0085454B1 publication Critical patent/EP0085454B1/en
Expired 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
    • 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
    • F25B2400/22—Refrigeration systems for supermarkets

Definitions

  • the invention relates to an apparatus for refrigeration by means of an electrically driven compilation of components, comprising compressors, evaporators, condensers and pumps in a circuit for evaporable refrigerant.
  • This may be the speed of the motor of the ventilator or of the compressor, or both.
  • Circuit pressure valves are additionally used for adjusting the compressor speed.
  • US-A-4 257 238 disclosed the possibility of varying speed of a reciprocating plunger compressor by frequency changes, but only a variation in standard speeds was possible, because no solution for the kind of drive and of lubrication has been discerned.
  • US-A-3 803 863 disclosed a refrigeration apparatus with a control system including means for sensing inlet and outlet temperatures.
  • a frequency inverter is used for controlling the motor drive but no arrangement for lubrication at different speeds has been discerned.
  • the refrigeration apparatus comprises (a) a closed cooling circuit including an evaporator, a condenser, a reciprocating plunger compressor, driven by an electro motor, a heat exchanger, interposed between the compressor and the evaporator, for exchanging heat between the refrigerant supply and return lines of the evaporator, and valves in the circuit for adjusting the refrigerant flow;
  • the control means comprises a microprocessor for assembling the data supplied by the sensors, and transmitting corresponding control data to the frequency inverters.
  • FIG 1 a unit as designed according to the invention is shown schematically, wherein the reciprocating plunger compressors (1), the evaporators-ventilators (2), pumps (3) and the condenser-ventilator (4) and pumps (5) are indicated, provided with frequency-transforming devices (6), operating as adjusting instruments for the velocity head of reciprocating plunger compressors, pumps and ventilators, and being controlled by the control means (7).
  • one or several reciprocating plunger compressors (1) are used, preferably of the open or indirectly driven type.
  • the electromotor (8) of reciprocating plunger compressor (1) is adjusted by the frequency-transforming appliance (6) operating as an adjustment device, for controlling the speed of rotation of the motor.
  • the control is effected by measurement of the temperature with sensor (9) and of pressure with pressure instrument (10).
  • an externally situated hermetically closed oil pump (11) is linked with its own separate electrical drive, which maintains an even pressure of lubricant oil at varying speeds of fluids, which are effected by the reciprocating plunger compressor(s).
  • Adjustment of power input, adapted to capacity required, is also possible for the other components of the unit.
  • the speed of the evaporator-ventilators, the condenser-ventilators and the pumps is adjusted by the adjusting device (6) in the same way.
  • the unit is provided with a microprocessor control (7), into which the following measured data from the system are supplied:
  • the adjustment is obtained by a control of the adjusting devices (6) of the speed of rotation, the electronically controlled valves (12) and the servo drives (13).
  • Figure 2 shows a diagram of equipment of several cooling units.
  • the reciprocating plunger compressor (1) is connected with one or several evaporator units (14), each operating within a defined range of evaporation temperature, and one or several condenser units (16), operating within a defined range of condensation temperature.
  • the capacity will be determined by the unit requiring the largest temperature range.
  • the other units are being reduced by means of an electronically controlled valve (12) adjusting the flow of gas and liquid.
  • the speed of rotation of the ventilators is also adjusted.
  • Each of the compressors with accessory adjustment for the electromotor speed deals with a defined temperature range.
  • the entire sysystem comprises the following:
  • Said nominal charge will be considerably lower than the peak charge, resulting in diminishing losses, on an average occurring by motion of parts (plungers, gearing etc.) and by resistance (of gas and liquid in conduit pipes, valves, stop-cocks, etc.).
  • Peak values by switching-on and high values of current at start-run will be avoided with this system, whereby in most cases lower costs of connection with the utilities network can be obtained.
  • Repair of interferences can be carried out in a fast manner, because of the central recording system and trouble signalling, so that damage will remain restricted.
  • the control and adjustment of the condenser-ventilator (4) makes the use of an extra ventilator for room conditioning directly from the condenser superfluous.
  • the system can find a broad field of applications, such as cooling of refrigerated storage-cells, closed and open refrigerators in supermarkets, equipment for alimentary technology, storage possibilities in harbours, transport and haulage, refrigerated transport, cooling of dwellings, living rooms and offices, etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Fertilizers (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Motor Or Generator Cooling System (AREA)
EP83200089A 1982-01-28 1983-01-21 Refrigeration apparatus Expired EP0085454B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83200089T ATE49048T1 (de) 1982-01-28 1983-01-21 Kuehlanlage.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8200310 1982-01-28
NLAANVRAGE8200310,A NL188479C (nl) 1982-01-28 1982-01-28 Koelinrichting.

Publications (3)

Publication Number Publication Date
EP0085454A2 EP0085454A2 (en) 1983-08-10
EP0085454A3 EP0085454A3 (en) 1983-08-17
EP0085454B1 true EP0085454B1 (en) 1989-12-27

Family

ID=19839147

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83200089A Expired EP0085454B1 (en) 1982-01-28 1983-01-21 Refrigeration apparatus

Country Status (4)

Country Link
EP (1) EP0085454B1 (nl)
AT (1) ATE49048T1 (nl)
DE (1) DE3381017D1 (nl)
NL (1) NL188479C (nl)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA8562B (en) * 1984-01-11 1985-09-25 Copeland Corp Highly efficient flexible two-stage refrigeration system
SE439831C (sv) * 1984-03-21 1987-01-26 Olson Hans E E Forfarande och anordning for avfrostning av flera forangare
DE3609337A1 (de) * 1986-03-20 1987-09-24 Fichtel & Sachs Ag Motorisch betriebene waermepumpe
JPH06165519A (ja) * 1992-11-27 1994-06-10 Sanyo Electric Co Ltd 電動機の駆動方法
US5963458A (en) * 1997-07-29 1999-10-05 Siemens Building Technologies, Inc. Digital controller for a cooling and heating plant having near-optimal global set point control strategy
BRPI0406953A (pt) * 2003-01-24 2006-01-03 Bristol Compressors Sistema e método para modulação de capacidade escalonada em um sistema de refrigeração
US8209057B2 (en) * 2008-11-17 2012-06-26 Liebert Corporation System and method for forming universal control panel
DE102014010104A1 (de) * 2014-07-08 2016-01-14 Linde Aktiengesellschaft Verfahren zur Regelung der Drehzahl von seriengeschalteten kryogenen Verdichtern zur Kühlung von tiefkaltem, kryogenen Helium

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3324672A (en) * 1964-08-31 1967-06-13 Gen Motors Corp Electrically controlled conditioning system
US3447335A (en) * 1967-09-22 1969-06-03 John D Ruff Variable capacity centrifugal heat pump
US3499297A (en) * 1969-02-20 1970-03-10 John D Ruff Variable capacity refrigeration system
US3668883A (en) * 1970-06-12 1972-06-13 John D Ruff Centrifugal heat pump with overload protection
US3803863A (en) * 1972-06-20 1974-04-16 Borg Warner Control system for refrigeration compressor
DE2451361A1 (de) * 1974-10-29 1976-05-06 Jakob Verfahren zum regeln einer kompressorkuehlanlage
US4257238A (en) * 1979-09-28 1981-03-24 Borg-Warner Corporation Microcomputer control for an inverter-driven heat pump

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Techn. Handbuch "Verdichter", pp.147, 149-151 *

Also Published As

Publication number Publication date
DE3381017D1 (de) 1990-02-01
NL188479C (nl) 1992-07-01
ATE49048T1 (de) 1990-01-15
EP0085454A3 (en) 1983-08-17
NL188479B (nl) 1992-02-03
EP0085454A2 (en) 1983-08-10
NL8200310A (nl) 1983-08-16

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