EP0094590A2 - Installation dans laquelle un réfrigérant est circulé - Google Patents

Installation dans laquelle un réfrigérant est circulé Download PDF

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Publication number
EP0094590A2
EP0094590A2 EP83104570A EP83104570A EP0094590A2 EP 0094590 A2 EP0094590 A2 EP 0094590A2 EP 83104570 A EP83104570 A EP 83104570A EP 83104570 A EP83104570 A EP 83104570A EP 0094590 A2 EP0094590 A2 EP 0094590A2
Authority
EP
European Patent Office
Prior art keywords
suction
collecting container
oil
suction collecting
gas 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.)
Withdrawn
Application number
EP83104570A
Other languages
German (de)
English (en)
Other versions
EP0094590A3 (fr
Inventor
Michael Hopp
Bernhard Dipl.-Ing. Möller
Walter Parzefall
Dieter Dipl.-Ing. Weidenbach
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.)
Linde GmbH
Original Assignee
Linde GmbH
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 Linde GmbH filed Critical Linde GmbH
Publication of EP0094590A2 publication Critical patent/EP0094590A2/fr
Publication of EP0094590A3 publication Critical patent/EP0094590A3/fr
Withdrawn legal-status Critical Current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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006—Accumulators
    • 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

Definitions

  • the invention relates to a system in which a refrigerant is circulated with one or more compressors connected to a suction collecting container.
  • the circulated refrigerant is compressed in several compressors.
  • the suction collecting container - previously usually a suction collecting pipe - has the task of taking up the refrigerant suction gas conveyed via individual lines or via a ring line, distributing it evenly to the individual compressors of the combined system and preventing liquid refrigerant from reaching the compressors. Since liquid refrigerant was only incompletely separated in the known suction collecting containers, it was common to install additional liquid separators on the suction side of the compressors.
  • an oil separator is therefore arranged in the pressure line, in which the oil carried by the gaseous refrigerant is separated.
  • the oil collecting in the separator is returned to the compressor either by a manually operated device or by an automatically operating device via an oil return line.
  • Liquid separators and oil separators cause pressure losses and thus energy losses. Oil regulation systems are also complex, expensive and prone to failure.
  • the invention is therefore based on the object of specifying a system of the type described at the outset which operates with minimal pressure losses and which ensures both reliable liquid separation and an adequate oil supply to the compressors.
  • each of the compressors is connected to the suction collecting container via a suction gas line passing through the suction collecting container wall, the end of the suction gas line lying inside the suction collecting container being designed as a bend, which is arranged in a substantially vertical plane, the open end of which opens into the head space of the suction collecting container, which is arranged at a distance from the suction collecting container wall and in the deepest area of which an oil-conveying device conveying oil in a controllable amount from the bottom region of the suction collecting container is arranged into the suction gas line.
  • the refrigerant vapor in which oil is carried, is drawn in by the compressors via a suction collecting container.
  • the refrigerant vapor and the oil are separated by Ab in the suction collector divorce.
  • the oil collects in an oil reservoir at the bottom of the suction container.
  • the refrigerant vapor freed from the oil is removed from the top area of the suction collecting container via one or more elbows opening there.
  • Each manifold is connected to a compressor via a suction gas line passing through the suction collecting container wall.
  • the respective elbow is arranged within the suction collecting container so that it is immersed with its deepest part in the oil reservoir.
  • the suction collecting container according to the invention not only ensures complete liquid separation, but also a uniform and sufficient oil supply to each compressor.
  • the pressure loss on the suction side of the compressors is minimal in a system according to the invention, in particular during part-load operation. Since the refrigerant circuit system does not contain an oil separator on the pressure side of the compressor, the same applies to the pressure-side pressure loss.
  • an injector In a preferred embodiment serves as ölturivor - direction, an injector.
  • An injector does not stand out only due to low susceptibility to faults, but also enables oil delivery that automatically adapts to the compressor output: If, for example, a higher output is required in a compression refrigeration system, the speed of the refrigerant in the suction gas line and thus the amount of oil pumped will increase due to the higher refrigerant throughput required. In this way, each compressor is supplied with an amount of oil corresponding to its higher oil throw via the suction gas line.
  • Another possibility for regulating the oil flow to the refrigerant vapor is offered by an advantageous embodiment of the inventive concept: this is characterized by a bend with an opening in the deepest area, as well as a closed position in a housing that can be adjusted from outside the suction collecting container and in the closed position at the opening edge adjoining, regulating the flow through the opening, the housing having a suction opening opening into the interior of the suction collecting container.
  • the flow area determined by the opening in the elbow and the position of the set screw can be adjusted from outside the suction collecting container via the adjusting screw and the oil flow can thus be regulated.
  • the amount of oil delivered is adjusted in this way to the oil throw of the associated compressor and can be readjusted if necessary.
  • the suction opening in the housing is arranged at a distance from the bottom of the suction collecting container.
  • the flow rate is controlled electronically by the oil delivery device as a function of the oil level in the crankcase of the associated compressor.
  • the system according to the invention eliminates the need for complex, expensive and susceptible oil regulating systems and eliminates the risk of liquid spills to the compressors, with additional liquid separators being saved.
  • the commissioning and maintenance of systems according to the invention is facilitated in comparison to conventional systems.
  • composite systems constructed according to the invention become more economical.
  • the device according to the invention can be used, for example, in all refrigeration systems, heat pumps or chillers.
  • the suction collecting container 1 shows a cross section through a suction collecting container 1 according to the invention.
  • the suction collecting container 1 has a cylindrical shape.
  • the wall of the suction collecting container 1 is also penetrated by a suction gas line 3 in the horizontal direction and by the housing 8 of an oil regulating valve 4 in the vertical direction.
  • the end of the suction gas line 3 within the suction collecting container 1 is designed as a 90 ° elbow 5, so that the open end 6 of the suction gas line 3 opens in the vertical direction in the head region of the suction collecting container.
  • the manifold 5 has an opening 7.
  • a connection is established between the suction gas line 3 and the bottom region of the suction collecting container 1.
  • the suction opening 9 is at a distance of e.g. 1 mm from the bottom of the suction container 1 arranged.
  • An oil regulating screw 10 is guided within the housing 8, the tip of which is conical and closes the opening 7 in the closed position.
  • the flow through opening 7 is controlled by the position of the regulating screw 10 and the opening 7.
  • the housing 8 can e.g. screwed into the wall of the suction collecting container and locked with a lock nut 11.
  • An alternative for the arrangement of the suction gas line 3 is shown in dashed lines. In this case, the suction gas line 3 passes through the wall of the suction collecting container 1 in the vertical direction and the elbow 5 is a 180 ° elbow.
  • refrigerant vapor is carried in the oil is sucked in by a compressor connected to the suction gas line 3.
  • the refrigerant vapor / oil mixture enters port 1 into port 1.
  • the oil is separated in the suction collecting container (for example by means of a baffle plate, not shown) and collects in the bottom area of the suction collecting container 1. Only the refrigerant vapor enters the elbow 5 of the suction gas line 3 via the open end 6 of the suction gas line 3 in the upper part of the suction collecting container 1.
  • the refrigerant vapor flows through the manifold 5 and sucks in oil from the oil reservoir 12 through the opening 7.
  • the amount of oil sucked in can be adjusted in a wide range by means of regulating screw 10.
  • the oil is fed to the respective compressor together with the sucked-in refrigerant vapor.
  • all of the oil thrown by the compressors 13 to 16 is separated in the suction collecting container 1, collected and fed to each compressor evenly and in an amount corresponding to its oil throw with the suction gas.
  • FIG. 2 shows the arrangement of a suction collecting container 1 according to the invention in the context of a refrigeration system.
  • Four compressors 13 to 16 are connected to the suction collecting container 1 via suction gas lines 17 to 20.
  • Compressed refrigerant vapor is introduced via lines 21 to 24 with check valves into a pressure manifold 25.
  • the compressed refrigerant vapor is then liquefied in a condenser 26.
  • Devices are not shown in which the refrigerant is expanded and evaporated.
  • Evaporated refrigerant is sucked into the suction collecting container 1 via a line 27 with a shut-off valve 28 and, for example, two dryers 29, in which moisture and dirt are filtered.
  • FIG. 3 shows a longitudinal section through a suction collecting container according to the invention. Corresponding parts are provided with the same reference numerals.
  • the suction collecting container shown is used to be able to supply four compressors with oil or refrigerant vapor. For this purpose serve four suction gas lines 33 to 36, of which the suction gas lines 34 and 35 penetrate the wall of the suction collecting container from the front and the suction gas lines 33 and 36 this wall from the rear, so that the open ends of the associated manifolds 38, 39 or 37 and 40 each other in the upper part of the suction collecting container.
  • the regulating devices 41 to 44 serve to regulate the oil flow to the individual compressors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Greenhouses (AREA)
  • Fertilizers (AREA)
  • Central Heating Systems (AREA)
EP83104570A 1982-05-19 1983-05-10 Installation dans laquelle un réfrigérant est circulé Withdrawn EP0094590A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823219023 DE3219023A1 (de) 1982-05-19 1982-05-19 Anlage, in der ein kaeltemittel im kreislauf gefuehrt wird
DE3219023 1982-05-19

Publications (2)

Publication Number Publication Date
EP0094590A2 true EP0094590A2 (fr) 1983-11-23
EP0094590A3 EP0094590A3 (fr) 1984-10-24

Family

ID=6164104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83104570A Withdrawn EP0094590A3 (fr) 1982-05-19 1983-05-10 Installation dans laquelle un réfrigérant est circulé

Country Status (3)

Country Link
EP (1) EP0094590A3 (fr)
DE (1) DE3219023A1 (fr)
NO (1) NO831563L (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0260336A1 (fr) * 1986-09-16 1988-03-23 TEKO Gesellschaft für Kältetechnik GmbH Séparateur de liquide pour une série de machines frigorifiques refroidies par de l'air ou de l'eau à renvoi permanent d'huile
NL9401931A (nl) * 1994-11-18 1996-07-01 Euro Cold B V Systeem voor het doen circuleren van gecomprimeerd gas en daarbij toe te passen vloeistofafscheider.
US5906112A (en) * 1997-12-12 1999-05-25 Ford Motor Company Accumulator for an air conditioning system
EP0843093A3 (fr) * 1996-11-19 1999-12-15 Carrier Corporation Dispositif d'alimentation d'huile pour un compresseur
EP1139038A1 (fr) * 2000-03-29 2001-10-04 Linde Aktiengesellschaft Installation frigorifique
WO2003059038A3 (fr) * 2002-01-18 2003-10-23 Tm C S P A Termomeccanica Comp Unite de separation compacte pour melanges gaz-liquides, plus particulierement pour des melanges d'air et d'huile
CN106225353A (zh) * 2016-08-24 2016-12-14 常州利普金属制品有限公司 万向型储液器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4554795A (en) * 1983-11-14 1985-11-26 Tyler Refrigeration Corporation Compressor oil return system for refrigeration apparatus and method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH156330A (de) * 1928-10-18 1932-07-31 Sulzer Ag Einrichtung zum Rückführen von Öl aus dem Verdampfer in den Kompressor von Kältemaschinen.
CH146359A (de) * 1930-05-05 1931-04-15 Escher Wyss Maschf Ag Vorrichtung zur Rückförderung von Schmiermittel aus den Abscheidern einer Kälteanlage mit Kompressionsmaschine in den Saugraum der letzteren.
US1896061A (en) * 1930-07-07 1933-02-07 Mullins Mfg Corp Apparatus for recovering and controlling the flow of oil in refrigerating systems
DE630311C (de) * 1935-02-08 1936-05-25 G H Walb & Co Regelvorrichtung zur OElrueckfuehrung aus ueberfluteten Verdampfern fuer Kaelteanlagen
CH189230A (de) * 1936-02-07 1937-02-15 E Bryner Einrichtung an Kompressions-Kühlmaschinen zur Rückleitung des Schmiermittels aus dem Verdampfer in den Kompressor.
US3636723A (en) * 1969-09-17 1972-01-25 Kramer Trenton Co Refrigeration system with suction line accumulator
US3754409A (en) * 1972-03-06 1973-08-28 Virginia Chemicals Inc Liquid trapping suction accumulator
US3938353A (en) * 1973-05-11 1976-02-17 Virginia Chemicals, Inc. Liquid trapping suction accumulator
US4291548A (en) * 1980-07-07 1981-09-29 General Motors Corporation Liquid accumulator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0260336A1 (fr) * 1986-09-16 1988-03-23 TEKO Gesellschaft für Kältetechnik GmbH Séparateur de liquide pour une série de machines frigorifiques refroidies par de l'air ou de l'eau à renvoi permanent d'huile
NL9401931A (nl) * 1994-11-18 1996-07-01 Euro Cold B V Systeem voor het doen circuleren van gecomprimeerd gas en daarbij toe te passen vloeistofafscheider.
EP0843093A3 (fr) * 1996-11-19 1999-12-15 Carrier Corporation Dispositif d'alimentation d'huile pour un compresseur
US5906112A (en) * 1997-12-12 1999-05-25 Ford Motor Company Accumulator for an air conditioning system
EP1139038A1 (fr) * 2000-03-29 2001-10-04 Linde Aktiengesellschaft Installation frigorifique
WO2003059038A3 (fr) * 2002-01-18 2003-10-23 Tm C S P A Termomeccanica Comp Unite de separation compacte pour melanges gaz-liquides, plus particulierement pour des melanges d'air et d'huile
CN106225353A (zh) * 2016-08-24 2016-12-14 常州利普金属制品有限公司 万向型储液器

Also Published As

Publication number Publication date
DE3219023A1 (de) 1983-11-24
EP0094590A3 (fr) 1984-10-24
NO831563L (no) 1983-11-21

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Inventor name: MOELLER, BERNHARD, DIPL.-ING.

Inventor name: HOPP, MICHAEL

Inventor name: WEIDENBACH, DIETER, DIPL.-ING.

Inventor name: PARZEFALL, WALTER