EP3507493A1 - Compresseur - Google Patents

Compresseur

Info

Publication number
EP3507493A1
EP3507493A1 EP17761188.6A EP17761188A EP3507493A1 EP 3507493 A1 EP3507493 A1 EP 3507493A1 EP 17761188 A EP17761188 A EP 17761188A EP 3507493 A1 EP3507493 A1 EP 3507493A1
Authority
EP
European Patent Office
Prior art keywords
compressor
suction
housing
oil sump
lubricant
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
Application number
EP17761188.6A
Other languages
German (de)
English (en)
Other versions
EP3507493B1 (fr
Inventor
Alexander LIBERT
Markus BESEMER
Wolfgang SANDKÖTTER
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.)
Bock GmbH
Original Assignee
GEA Bock 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 GEA Bock GmbH filed Critical GEA Bock GmbH
Publication of EP3507493A1 publication Critical patent/EP3507493A1/fr
Application granted granted Critical
Publication of EP3507493B1 publication Critical patent/EP3507493B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/02—Lubrication
    • F04B39/0223—Lubrication characterised by the compressor type
    • F04B39/023—Hermetic compressors
    • F04B39/0261—Hermetic compressors with an auxiliary oil pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • 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
    • F25B31/02—Compressor arrangements of motor-compressor units
    • F25B31/023—Compressor arrangements of motor-compressor units with compressor of reciprocating-piston type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/10—Indicating devices; Other safety devices
    • F01M11/12—Indicating devices; Other safety devices concerning lubricant level
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
    • F01M2001/0238—Rotary pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F01M2001/0253—Pressure lubrication using lubricating pumps characterised by the pump driving means

Definitions

  • the present invention relates to a compressor in particular for compressing refrigerant according to the preamble of patent claim 1.
  • Compressors are used in many areas of modern life.
  • An example of this is the generation of compressed air (compressed air) for a variety of purposes, such as filling tires, respirators, etc.
  • compressed air compressed air
  • Another example is
  • Compressing in particular technical
  • gases for storage and transport thereof, for example in corresponding gas cylinders.
  • gases nitrogen, oxygen, acetylene and other gases, which are used, for example, as combustion or protective gases in welding operations.
  • compressors especially due to the increasing air conditioning of rooms and vehicles and also due to a steadily growing need for cooling of goods often
  • compressors used are reciprocating compressors, by way of example
  • Axial piston compressors and radial piston compressors may be mentioned.
  • Such compressors usually have a compressor housing, in which at least one piston in a cylinder or a cylinder bore is arranged back and forth.
  • the drive of the piston is often done by an electric motor.
  • Such compressors often have an oil sump lubrication, wherein the oil sump in the compressor in an installed or working position from a housing bottom or housing lower edge extends up to a certain oil level upwards. It is important to ensure that the engine is not immersed in the oil sump, which requires a relatively large size of the corresponding compressor.
  • a compressor in particular compressors for compressing gases, continue to specify in particular for compressing refrigerant, which has a smaller or more compact size compared to compressors according to the prior art.
  • a corresponding compressor in particular compressor for compressing gases, furthermore, in particular for compressing refrigerant
  • the compressor further comprises an oil sump lubrication, wherein the oil sump in the
  • Compressor extends in a working position or an installation position of a lower housing or lower housing edge up to a predetermined oil level or oil level.
  • the compressor has a lubrication, in particular pressure circulation lubrication, with a lubricant delivery device, wherein the lubricant delivery device is in communication with the oil sump and is provided for the suction of lubricant from the oil sump.
  • the electric motor has an enclosure, the one
  • Lubricant conveying device are implemented by a single gear pump having a first and a second suction port, wherein the first and the second suction port are separated from each other, and wherein the first suction port is provided for the extraction of entering into the housing interior lubricant, and the second suction port for suction is provided by lubricant from the oil sump.
  • the electric motor of the compressor is in a so-called. Dry sump arranged because of the arranged in the housing
  • both the suction device and the lubricant delivery device which are implemented by a single pump, are implemented by an internal gear pump. This represents a robust construction.
  • the gear pump has at least two gears, which have gear teeth, wherein the gear teeth have a tooth width, which is measured in particular at its base or at half its height, wherein the first and the second suction from each other by at least one tooth width from each other are separated.
  • the gear pump may have a pressurized kidney to discharge discharged oil.
  • the gear pump as the first and second intake ports, a first and a second Saugniere, wherein the first Saugniere via a first suction line with the Einhausungsinnenraum in communication or, fluid communication is and wherein the second Saugniere via a second suction line extending into the oil sump of the Compressor hineinerstreckt, with the oil sump in connection.
  • first Saugniere and / or the second Saugniere alternatively directly with the Housing interior / oil sump may be in communication or may be arranged on or in selbigem.
  • the position of the suction kidneys is determined by the relative amount of the fluid to be suctioned off at the respective suction openings.
  • the gear pump in a normal operation, a working direction of rotation or conveying direction in which the promotion of the medium to be conveyed takes place, wherein seen in terms of working direction first Saugniere has a smaller extent in the circumferential direction than that in Respect to the
  • the internal gear pump preferably has a pump housing which defines the same at least in sections outwardly, and an internal rotor and an external rotor, both of which are provided with teeth.
  • the inner rotor is usually designed as an external gear, that is as a gear, which has a tooth whose tooth tips are aligned radially outward, whereas the external rotor is usually designed as an internal gear, that is as a wheel-shaped device which radially inwardly directionally recessed and externally has an inwardly directed toothing.
  • the first and second suction kidneys are disposed in the pump housing and spaced from each other by at least a distance corresponding to a width of an intermeshing tooth pair of the outer rotor and the outer
  • Internal rotor corresponds, separated from each other.
  • the compressor optionally has a suction gas feed into the compressor housing, through which gas to be compressed, in particular refrigerant, is supplied into the compressor housing, and a Sauggasauslass the Sauggaszu Insertion gas inside the compressor housing.
  • Compressor housing wherein the Sauggasauslass on a compressor top
  • the housing has a Suction gas inlet, via which suction gas into the housing interior, in particular for cooling the electric motor, can occur, wherein the suction gas inlet is arranged on an upper side of the Einhausungsinnenraums.
  • the Sauggasauslass is arranged such that the suction gas enters the same tangential to the compressor housing. Through the tangential
  • Suction gas entering the compressor housing or compressor outer housing is already achieved an oil separation of over 90% of the oil in the suction flow.
  • a gravity separation takes place until the suction gas reaches the suction gas inlet of the housing (the intake opening in the motor housing).
  • additional oil that is still in the suction gas is injected by the centrifugal action of the rotor to the stator, where it can coagulate and run to the housing bottom. Here it is sucked off by the suction device or dry sump pump.
  • the two housings also form an excellent oil separator.
  • the compressor may have a high pressure volume into which the compressed medium, in particular refrigerant is ejected after the compression process, wherein the high pressure volume is associated with a pulsation damper for damping pulsations in the ejected medium.
  • the compressor is in an optional embodiment for compressing C0 2
  • Fig. 1 is a sectional view of a first embodiment of an inventive
  • FIG. 2 shows a detail of Fig. 1;
  • Fig. 3 is a view of the compressor of Figure 1, again in section, but with the cutting plane directed in a radial direction.
  • Fig. 4 is a detail view of Fig. 1;
  • Fig. 6 is a plan view of an oil pump of the compressor, wherein the oil pump cover is shown transparent;
  • FIG. 7 shows a drive shaft of the compressor with piston and balance weight according to the compressor shown in the preceding figures.
  • the compressor 10 shown in the figures is a
  • Reciprocating compressor more specifically a radial piston compressor, which
  • the compressor has a compressor housing 14, which this in the illustrated
  • the described compressor 10 is a compressor 10 with oil sump lubrication, wherein a
  • Oil sump 20 (in a working or operating position or an installation position of the
  • Compressor 10 from a housing bottom 22 to a predetermined oil level (oil level) 24 extends toward.
  • the electric motor 16 is arranged in a housing interior 26 delimited by the housing 18 and extends together with the housing 18 into the oil sump 20 of the compressor 10.
  • the housing interior 26 is oil-free or oil sump-free.
  • the electric motor 16 which is arranged in the housing interior 26, in a dry sump in the
  • Housing interior 26 is arranged.
  • the housing 18 has a suction opening 28 in the form of a recess, which is in communication or fluid communication by means of a first suction line 30 with a suction device or pump in the form of an internal gear pump 32.
  • the first suction line 30 connects the suction opening 28 to a first suction opening in the form of a first suction kidney 34 of the internal gear pump 32
  • the internal gear pump 32 also has a second suction opening in the form of a second suction kidney 36, which is in fluid communication via a second suction line 38 with the sump 20. This ensures a reliable delivery of oil through the internal gear pump 32.
  • Internal gear pump 32 is in a structurally simple design, both a good lubricating performance and a reliable maintenance of the dry sump, in which the electric motor 16 is arranged, that is, therefore, a reliable
  • the internal gear pump 32 has to discharge discharged oil on a pressure kidney 40, which via corresponding lines (not shown) with lubrication points,
  • bearing points which are to be lubricated, in conjunction or
  • the internal gear pump 32 has a pump housing 42 with a pump cover 44. Both the pump housing 42 and the pump cover 44 limit the Internal gear pump 32 to the outside.
  • both the first suction kidney 34 and the second suction kidney 36 and the pressure kidney 40 in the pump cover 44 are each in shape
  • first suction kidney 34 and / or the second suction kidney 36 and / or the pressure kidney 40 is not arranged on the pump cover 44 but on the pump housing 42, for example on a side opposite the pump cover 44.
  • first suction kidney 34 and the second suction kidney 36 are spaced apart from each other. The distance is at least one width of a tooth of either an external rotor 46 of the internal gear pump 32 or an internal rotor 48 of the internal gear pump 32 (which are identical).
  • the width of the tooth is defined as the extension at the base of the tooth. This ensures that the volume associated with the first suction kidney 34 and the volume associated with the second suction kidney 36 in the pump passing through the outer runner 46 and the second suction kidney 36
  • Internal rotor 48 are formed, remain separated from each other and the
  • Internal gear pump 32 provided they are in a working direction (in the here
  • the pump rotates to the right, i. from the first
  • Saugniere 34 in the direction of the second suction kidney 36 is operated, first sucks oil from the housing interior 26 and then obtains oil from the oil sump.
  • the gear pump has, as mentioned above, in a normal operation, the working direction of rotation and seen in terms of working direction first Saugniere, which corresponds to the present embodiment of the first Saugniere 34 has a smaller extent in the circumferential direction than in With reference to the working direction, the second suction kidney, which corresponds to the second suction kidney 36 in the presently described embodiment.
  • Lubricant brings.
  • the subset is in particular 0% - 50%, preferably 0% - 40%, still preferred 0% - 25%.
  • the compressor 10 further has a suction gas feed 50, which passes from the outside through the compressor housing 14 and opens into the interior of the compressor housing 14.
  • the suction gas supply 50 is arranged such that a Sauggasauslass 52 of the Sauggaszu operation 50 ensures a tangential gas flow in the compressor 10 for improved oil separation.
  • the Sauggasauslass 52 is thus arranged such that the suction gas enters the compressor housing 14 tangentially thereto. That in the
  • Compressor housing 14 introduced suction gas is then via a in the form of a
  • Housing interior 26 in which the electric motor 16 is arranged, guided, wherein the suction gas passes through the electric motor 16 and thereby cools.
  • the suction gas flow is illustrated by corresponding arrows 56, 58 and 60.
  • the suction gas is sucked into the cyuters of the compressor 10 to then be discharged in a compressed state into a high-pressure volume 62.
  • the high-pressure volume 62 has for damping pulsations, which by the
  • Compression process in particular the discharge of the pressurized gas or refrigerant are caused in the high-pressure volume 62, a
  • Pulsation damper 64 on. This ensures at the same time for a low noise.
  • the compressor 10 is designed as a compressor for C0 2 and formed in a hermetic construction.
  • the compressor 10 is designed as a compressor for C0 2 and formed in a hermetic construction.
  • a semi-hermetic design of the compressor is conceivable. It can therefore be stated that a compressor 10 according to the present invention can be designed both hermetically and semi-hermetically.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

L'invention concerne un compresseur (10), en particulier un compresseur frigorifique, comprenant un carter de compresseur (14) et au moins un piston (12) qui est disposé dans un cylindre de manière à effectuer un mouvement de va-et-vient et qui est entraîné par un moteur électrique (16), ledit compresseur (10) comportant une lubrification par carter d'huile, ledit carter d'huile (20) s'étendant dans le compresseur (10) d'une face inférieure de carter (22) jusqu'à un niveau d'huile (24), ledit compresseur (10) présentant une lubrification sous pression en circuit fermé par l'intermédiaire d'un dispositif de transport de lubrifiant, ce dispositif de transport de lubrifiant étant relié au carter d'huile et prévu pour aspirer le lubrifiant contenu dans le carter d'huile, ledit moteur électrique (16) comprenant un logement (18) qui comporte un espace intérieur de logement (26) délimité par ce logement (18), le moteur électrique (16) étant disposé dans cet espace intérieur de logement (26) et ledit moteur électrique (16) s'étendant avec son logement (18) dans le carter d'huile (20) du compresseur (10). Le logement (18) comporte une ouverture d'aspiration (28) reliée à un dispositif d'aspiration conçu pour aspirer le lubrifiant arrivé dans l'espace intérieur de logement (26), ledit dispositif d'aspiration et le dispositif de transport de lubrifiant étant mis en œuvre par l'intermédiaire d'une pompe à engrenage (32) unique qui comporte une première (34) et une deuxième (36) ouverture d'aspiration, cette première et cette deuxième ouverture d'aspiration étant séparées l'une de l'autre, ladite première ouverture d'aspiration (34) étant prévue pour aspirer le lubrifiant arrivé dans l'espace intérieur de logement (26), et la deuxième ouverture d'aspiration (36) étant prévue pour aspirer le lubrifiant contenu dans la carter d'huile (20).
EP17761188.6A 2016-09-02 2017-08-31 Compresseur Active EP3507493B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016010567.4A DE102016010567A1 (de) 2016-09-02 2016-09-02 Verdichter
PCT/EP2017/001031 WO2018041403A1 (fr) 2016-09-02 2017-08-31 Compresseur

Publications (2)

Publication Number Publication Date
EP3507493A1 true EP3507493A1 (fr) 2019-07-10
EP3507493B1 EP3507493B1 (fr) 2020-06-10

Family

ID=59761916

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17761188.6A Active EP3507493B1 (fr) 2016-09-02 2017-08-31 Compresseur

Country Status (4)

Country Link
EP (1) EP3507493B1 (fr)
CN (1) CN109642562B (fr)
DE (1) DE102016010567A1 (fr)
WO (1) WO2018041403A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3211365A (en) 1961-10-16 1965-10-12 Copeland Refrigeration Corp Compressor structure
US3877853A (en) * 1971-07-08 1975-04-15 Borg Warner Vane controlling system for rotary sliding vane compressor
DE2709002C3 (de) * 1977-03-02 1980-09-11 Danfoss A/S, Nordborg (Daenemark) Verdichteraggregat, insbesondere für Kältemaschinen
JPS57105587A (en) * 1980-12-22 1982-07-01 Matsushita Refrig Co Compressor for refrigerant
IT1266941B1 (it) * 1994-09-28 1997-01-21 Embraco Italia S P A Motocompressore avente ingombro laterale ridotto.
CN1125960C (zh) * 1999-05-08 2003-10-29 三菱电机株式会社 电冰箱
KR100442384B1 (ko) * 2001-10-23 2004-07-30 엘지전자 주식회사 대향형 왕복동식 압축기의 윤활유 공급 장치
JP2005180313A (ja) * 2003-12-19 2005-07-07 Matsushita Electric Ind Co Ltd 圧縮機
DE102005038784B3 (de) * 2005-08-17 2007-05-03 Danfoss Compressors Gmbh Linearverdichter, insbesondere Kältemittelverdichter

Also Published As

Publication number Publication date
DE102016010567A1 (de) 2018-03-08
CN109642562B (zh) 2020-08-21
CN109642562A (zh) 2019-04-16
WO2018041403A1 (fr) 2018-03-08
EP3507493B1 (fr) 2020-06-10

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