EP2473738A1 - Compresseur hermétique à capacité variable - Google Patents

Compresseur hermétique à capacité variable

Info

Publication number
EP2473738A1
EP2473738A1 EP10747046A EP10747046A EP2473738A1 EP 2473738 A1 EP2473738 A1 EP 2473738A1 EP 10747046 A EP10747046 A EP 10747046A EP 10747046 A EP10747046 A EP 10747046A EP 2473738 A1 EP2473738 A1 EP 2473738A1
Authority
EP
European Patent Office
Prior art keywords
oil
pickup tube
crankshaft
oil pickup
motor
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
EP10747046A
Other languages
German (de)
English (en)
Other versions
EP2473738B1 (fr
Inventor
Husnu Kerpicci
Serkan Ozsahin
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Priority to SI201030352T priority Critical patent/SI2473738T1/sl
Publication of EP2473738A1 publication Critical patent/EP2473738A1/fr
Application granted granted Critical
Publication of EP2473738B1 publication Critical patent/EP2473738B1/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
    • 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
    • F04B39/0238—Hermetic compressors with oil distribution channels
    • F04B39/0246—Hermetic compressors with oil distribution channels in the rotating shaft
    • F04B39/0253—Hermetic compressors with oil distribution channels in the rotating shaft using centrifugal force for transporting the oil
    • 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
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0209—Rotational speed

Definitions

  • the present invention relates to a hermetic compressor with variable
  • VCC lubrication capacity
  • variable capacity compressors the capacity of the compressor is controlled according to the rotational speed of the motor and in case of a need for low capacity, the compressor motor is operated at low speed and in case of a need for high capacity, the compressor motor is operated at high speed.
  • the compressor motor is operated at low speed, the sufficient amount of oil cannot be fed by the oil pump and abrasions occur at crankshaft bearings that will affect the service life.
  • the aim of the present invention is the realization of a hermetic
  • the hermetic compressor realized in order to attain the aim of the present invention is of variable capacity type and comprises a speed control unit that provides the speed of the motor to be changed according to varying operating conditions, and an actuator that is activated and deactivated by the speed control unit and hence moves the oil pickup tube in the vertical direction and thus, provides the amount of immersion of the oil pickup tube into oil to change.
  • the actuator moves the oil pickup tube upwards and thus, provides the amount of immersion into oil to be decreased and hence the flow rate of the pumped oil to be decreased; and in the situation that the speed of the motor is lower than the threshold speed and in the period of time elapsing from the start of the motor until reaching the threshold speed, the actuator moves the oil pickup tube downwards and thus, provides the amount of immersion into oil to be increased and hence the flow rate of the pumped oil to be increased.
  • the actuator comprises an electromagnet which is activated by the speed control unit and thus, applies magnetic attraction force when the speed of the motor is lower than the threshold speed, and which is deactivated when the speed of motor is higher than the threshold speed, and a metal plate which is positioned on the upper side of the electromagnet.
  • the magnetic attraction force applied by the electromagnet that is activated by the speed control unit stretches the carrier springs that support the motor inside the casing and thus, moves also the motor and the crankshaft, whereto the oil pickup tube is connected, downwards together with the metal plate and the oil pickup tube.
  • the oil pickup tube moves inside the crankshaft and independently of the crankshaft, and the oil pickup tube is connected to the crankshaft by helical springs.
  • the upper end of the helical springs is connected to an upper flange extending to the inner wall of the crankshaft through the oil pickup tube, and the lower end of the helical springs is connected to a lower flange that is located at the lower end of the crankshaft and that surrounds the oil pickup tube with gaps.
  • the magnetic attraction force applied by the electromagnet overcomes merely the force of the helical springs and thus, moves the oil pickup tube downwards.
  • the electromagnet consumes less energy in comparison with the previous embodiment wherein it pulls the motor and crankshaft group downwards together with the oil pickup tube.
  • the speed control unit that adjusts the speed of the motor according to varying operating conditions also increases and decreases the amount of immersion of the oil pickup tube by means of the actuator, and an effective lubrication is realized by sending suitable amounts of oil to the crankshaft bearings under the operating conditions wherein the speed of the motor varies.
  • Figure 1 - is the schematic view of a hermetic compressor.
  • Figure 2 - is the schematic view of a crankshaft and of an oil pickup tube that can move inside the crankshaft by means of the actuator.
  • the hermetic compressor (1) comprises a casing (2) which carries the
  • a motor (3) which has a rotor (R) and a stator (S), a piston which provides the refrigerant fluid to be sent to the refrigeration system in a pressurized state, a cylinder wherein the piston operates, a crankshaft (4) which is press-fittingly assembled to the core of the rotor (R) in its rotational axis direction and which provides the rotational movement of the rotor (R) to be transmitted to the piston, an oil pickup tube (5) which is connected to the crankshaft (4) and the lower end of which is immersed into oil inside the casing (2), and which sucks and delivers the oil to the crankshaft (4), more than one carrier spring (6) which are fixed to the lower side inside the casing (2) and which carry the motor (3), a platform (7) which is fixed to the lower side inside the casing (2) and which bears the oil pickup tube (5) lower end, through which the oil pickup tube (5) sucks
  • the hermetic compressor (1) of the present invention comprises an
  • actuator (9) which is controlled by the speed control unit (8) and which provides the amount of immersion (D) into oil to be decreased by moving the oil pickup tube (5) upwards when the speed of the motor (3) is higher than a predetermined threshold speed (Vthreshold). and which provides the amount of immersion (D) into oil to be increased by moving the oil pickup tube (5) downwards when the speed of the motor (3) is lower than the threshold speed (Vthreshold) and i n the period of time elapsing from the moment of start of the motor (3) until reaching the threshold speed (V threshold) ( Figure 1 , 2).
  • the hermetic compressor (1) is of variable capacity type and by the speed control unit (8) the motor (3) is operated at low speed under light operating conditions wherein the need of refrigeration is low and at high speed under heavy operating conditions wherein the need of refrigeration is high.
  • the operation of the motor (3) is realized within successive periods of stopping and operation, and the motor (3) operates at low speed from the moment of start until reaching the threshold speed (Vthreshold)-
  • the actuator (9) moves the oil pickup tube (5) downwards and thus, provides the amount of immersion (D) into oil to be increased and the flow rate of the oil sucked by the oil pickup tube (5) to be increased in proportion to the increased amount of immersion (D).
  • the desired amount of oil is delivered to the crankshaft (4) bearings.
  • the centrifugal force that acts on the oil as a result of the rotation of the oil pickup tube (5) connected to the crankshaft (4) is utilized for transmitting the oil at the base of the casing (2) to the crankshaft (4) bearings.
  • the centrifugal force acting on the oil as a result of the rotation of the oil pickup tube (5) causes the oil surface to have a parabolic shape inside the oil pickup tube (5).
  • the parabolic surface formed by the oil inside the oil pickup tube (5) is transmitted upwards as much as the increased amount of immersion (D) and provides the flow rate of the pumped oil to be increased.
  • the actuator (9) moves the oil pickup tube (5) upwards and thus, provides the amount of immersion (D) into oil to be decreased and the flow rate of the oil sucked by the oil pickup tube (5) to be decreased in proportion to the decreased amount of immersion (D).
  • the actuator (9) comprises an electromagnet (10) which is mounted onto the platform (7) and which forms a magnetic field by being activated by the speed control unit (8) when the speed of the motor (3) is lower than the threshold speed (Vthreshold). and which is deactivated by the speed control unit (8) when the speed of the motor (3) is higher than the threshold speed (Vthreshold). and a metal plate (11) which is positioned on the upper side of the electromagnet (10) by being mounted to the oil pickup tube (5) such that a distance between the metal plate (11) and the electromagnet (10) is calculated according to the change in the amount of immersion (D) of the oil pickup tube (5).
  • the electromagnet (10) is activated by the speed control unit (8).
  • the electromagnet (10) pulls the metal plate (11) at the upper side and thus, moves the oil pickup tube (5), to which the metal plate (11) is connected, downwards in the vertical direction and provides the amount of immersion (D) to be increased.
  • the speed of the motor (3) rises above the threshold speed (Vthreshold).
  • the electromagnet (10) is deactivated by the speed control unit (8) this time, and the metal plate (11) is released and moves upwards by the effect of the carrier springs (6).
  • the oil pickup tube (5) also moves upwards together with the metal plate (11) and thus, the amount of immersion (D) of the oil pickup tube (5) is decreased.
  • the magnetic attraction force applied by the electromagnet (10) that is activated by the speed control unit (8) stretches the carrier springs (6) and thus, moves also the motor (3) and the crankshaft (4), whereto the oil pickup tube (5) is connected, downwards together with the metal plate (11) and the oil pickup tube (5).
  • the hermetic compressor (1) comprises an oil pickup tube (5) which moves inside the crankshaft (4) in the vertical direction and independently of the crankshaft (4), and one or more helical springs (12) which are located between the oil pickup tube (5) and the crankshaft (4), which carry the oil pickup tube (5) inside the crankshaft (4) and which control the movement of the oil pickup tube (5) in the vertical direction ( Figure 2).
  • the hermetic compressor (1) furthermore, comprises an upper flange (13) which is located at the oil pickup tube (5) upper end inside the crankshaft (4), which provides the oil pickup tube (5) to perform a sliding movement on the inner wall of the crankshaft (4), and to which the upper end of the helical spring (12) is connected, and a lower flange (14) which is located at the lower end of the crankshaft (4) and which surrounds the oil pickup tube (5) with gaps such that it will be able to move inside the crankshaft (4), and to which the lower end of the helical spring (12) is connected (Figure 2).
  • electromagnet (10) that is activated by the speed control unit (8), moves downwards inside the crankshaft (4) by shortening the helical springs (12), onto which the oil pickup tube (5) is seated.
  • the electromagnet (10) is deactivated and thus, the pressure on the oil pickup tube (5) is removed and the oil pickup tube (5) carried by the helical springs (12) that extend by being released moves upwards inside the crankshaft (4).
  • the electromagnet (10) in order to change the amount of immersion (D) of the oil pickup tube (5), only the metal plate (11) and the oil pickup tube (5) are moved by the electromagnet (10) and less energy is consumed in comparison with the previous embodiment.
  • the speed control unit (8) that adjusts the speed of the motor (3) according to varying operating conditions also increases and decreases the amount of immersion (D) of the oil pickup tube (5) by means of the actuator (9), and since the flow rate of the pumped oil is proportional to the amount of immersion (D) of the oil pickup tube (5), an effective lubrication is realized by sending suitable amounts of oil to the crankshaft (4) bearings under the operating conditions wherein the speed of the motor (3) is high and low.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

La présente invention concerne un compresseur hermétique (1), comprenant : un carter (2) ; un moteur (3) ; un vilebrequin (4) ; un tube de récupération d'huile (5) qui est raccordé au vilebrequin (4), dont l'extrémité inférieure est immergée dans l'huile à l'intérieur du carter (2), et qui aspire l’huile et la distribue au vilebrequin (4) ; plusieurs ressorts porteurs (6), fixés côté inférieur dans le carter (2) et supportant le moteur (3) ; une plateforme (7), fixée côté inférieur dans le carter (2) et supportant l'extrémité inférieure du tube de récupération d'huile (5) à travers laquelle le tube de récupération d'huile (5) aspire l'huile au moyen d'un trou situé en son centre ; et une unité de régulation de vitesse (8), permettant de changer la vitesse du moteur (3) en fonction des changements de conditions de fonctionnement. L'invention permet d'accroître l'efficacité de la lubrification des composants mobiles.
EP10747046.0A 2009-08-31 2010-08-27 Compresseur hermétique à capacité variable Active EP2473738B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201030352T SI2473738T1 (sl) 2009-08-31 2010-08-27 Hermetičen kompresor s spremenljivo kapaciteto

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200906691 2009-08-31
PCT/EP2010/062593 WO2011023810A1 (fr) 2009-08-31 2010-08-27 Compresseur hermétique à capacité variable

Publications (2)

Publication Number Publication Date
EP2473738A1 true EP2473738A1 (fr) 2012-07-11
EP2473738B1 EP2473738B1 (fr) 2013-07-10

Family

ID=42938454

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10747046.0A Active EP2473738B1 (fr) 2009-08-31 2010-08-27 Compresseur hermétique à capacité variable

Country Status (4)

Country Link
EP (1) EP2473738B1 (fr)
ES (1) ES2428012T3 (fr)
SI (1) SI2473738T1 (fr)
WO (1) WO2011023810A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016192976A1 (fr) * 2015-06-02 2016-12-08 Arcelik Anonim Sirketi Compresseur à appareil d'aspiration d'huile mobile

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011014605A1 (de) 2011-03-22 2012-09-27 Robert Bosch Gmbh Verfahren zum Beschichten, Polrohr und Vorrichtung zum Durchführen des Verfahrens
DE102011119299A1 (de) * 2011-11-24 2013-05-29 Robert Bosch Gmbh Verfahren zum Betreiben einerdrehzahlvariablen Verstellpumpe

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Publication number Priority date Publication date Assignee Title
DE1503408A1 (de) * 1966-10-15 1970-02-26 Danfoss As Gekapselter Motorverdichter,insbesondere fuer Kaeltemaschinen
US3451615A (en) * 1967-07-12 1969-06-24 Tecumseh Products Co Compressor lubricating system
JPS5818577A (ja) 1981-07-23 1983-02-03 Matsushita Refrig Co 圧縮機の給油装置
US6457562B1 (en) * 2001-01-26 2002-10-01 Scroll Technologies Lower bearing mount for sealed compressor
JP2006183655A (ja) * 2004-10-14 2006-07-13 Matsushita Electric Ind Co Ltd 圧縮機および冷凍装置および冷蔵庫
KR101161124B1 (ko) 2005-10-07 2012-06-28 삼성전자 주식회사 능력가변형 압축기

Non-Patent Citations (1)

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Title
See references of WO2011023810A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016192976A1 (fr) * 2015-06-02 2016-12-08 Arcelik Anonim Sirketi Compresseur à appareil d'aspiration d'huile mobile

Also Published As

Publication number Publication date
EP2473738B1 (fr) 2013-07-10
ES2428012T3 (es) 2013-11-05
SI2473738T1 (sl) 2013-10-30
WO2011023810A1 (fr) 2011-03-03

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