US2963113A - Compressor lubrication system - Google Patents

Compressor lubrication system Download PDF

Info

Publication number
US2963113A
US2963113A US687997A US68799757A US2963113A US 2963113 A US2963113 A US 2963113A US 687997 A US687997 A US 687997A US 68799757 A US68799757 A US 68799757A US 2963113 A US2963113 A US 2963113A
Authority
US
United States
Prior art keywords
bearing
compressor
motor
crankshaft
crankcase
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 - Lifetime
Application number
US687997A
Other languages
English (en)
Inventor
Robert W Ayling
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.)
Carrier Corp
Original Assignee
Carrier Corp
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 Carrier Corp filed Critical Carrier Corp
Priority to US687997A priority Critical patent/US2963113A/en
Priority to CH6463758A priority patent/CH366351A/de
Priority to DK356158AA priority patent/DK111006B/da
Application granted granted Critical
Publication of US2963113A publication Critical patent/US2963113A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • 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
    • F25B31/002—Lubrication
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps
    • Y10S417/902—Hermetically sealed motor pump unit

Definitions

  • the present invention relates to hermetic compressors and, more particularly, to hermetic compressors in which the crankshaft thereof is vertically disposed.
  • the bearing located between the motor and the compression mechanism handles the load of the compression mechanism and the motor and it has been found that the problem of lubricating this bearing is acute because of its remoteness from the oil sump.
  • the lubrication passages above the oil sump level fill with refrigerant vapor.
  • it is desirable to vent these lubrication passages so that the entrapped refrigerant will not starve the bearings of lubrication.
  • the present invention envisions a unique bearing construction especially adapted for hermetic compressors wherein initially refrigerant gas and subsequently lubricant are vented into the crankcase.
  • the chief object of the present invention is to provide a hermetic compressor having an improved bearing adapted to vent the lubrication system into the crankcase of the compressor.
  • Another object is to provide a compressor having a bearing which directs lubricant from the bearing into the crankcase to lubricate the compression equipment therein.
  • a still further objects is to provide a compressor having a vertically disposed crankshaft with a bearing substantially protruding into the motor compartment in which the bearing is adequately lubricated and has means for substantially directing the oil from said bearing into the compressor crankcase without entering the motor compartment and being entrained in the suction gas stream passing therethrough.
  • the present invention relates to a reciprocating cornpressor, having-a compression mechanism operatively associated with a vertically disposed shaft. Also connected to the shaft and mounted above the compression mechanism is a suitabledriving motor. Between the motor and the compression mechanism is located a bearing which journals the shaft.
  • the compressor is provided with a suitable lubrication pump which directs lubricant to the bearings; the bearing surface of the crankshaft is provided with a vertically disposed groove which is at ice least partially encompassed by the bearing surface.
  • a partition separates the motor from the compression equipment and the groove in the crankshaft is in communication with the area adjacent the compression equipment.
  • the compressor is of the type wherein the suction gas is utilized to cool the motor and the suction gas passes in the vicinity of the bearing.
  • the lubricant in the lubrication system and also the gaseous refrigerant therein are passed from the aforementioned bearing into the compression mechanism area wherein the lubricant passing from the bearing is utilized to lubricate the compression equipment without danger of the lubricant passing into the suction gas stream and entering the refrigeration circuit.
  • Figure 1 is a sectional view of a hermetic compressor unit employing the present invention
  • FIG. 2 is an enlarged sectional view of the bearing constituting the present invention.
  • Figure 3 is a plan view of the bearing shown in Figure 2.
  • This compressor 2 comprises an upper shell 4 and a lower shell 5. These shells are provided with flanged sections 6 and 7 which are intended to meet in sealing contact. Also included in the compressor is a third shell 8 having a flange 9 which is joined to the flanges 6 and 7 by means of an annular weld 10. By this construction a hermetic housing is formed.
  • the flange of the shell 8 has provided therein suitable openings 11 to place the upper and lower sections of the shell in communication.
  • the shell 8 also has a lower opening 12.
  • a compressor block 15 which consists of a motor flange portion 16 and a crankcase flange portion 17 divided by a suitable partition 18.
  • suitable cylinders 19 and 20 are located in the compressor block. It is appreciated that any desired number of cylinders may be employed.
  • Suitable pistons 21 and 22 are reciprocatingly mounted within the cylinders 19 and 20 and these pistons have mounted therein suitable'wrist-pins 23 and 24 which are in turn rotatably connected to the connecting rods 25 and 26.
  • These connecting rods 25 and 26 are rotatably connected to the eccentric portion of the crankshaft 30.
  • valve assemblies 31 and 32 which may be similar to those shown in the copending application in the name of Karl M. Gerteis, Serial No. 687,975, filed October 3, 1957.
  • valve assemblies are retained within their respective positions by suitable spring retainers 33 and 34.
  • spring retainers 33 and 34 are biased between the valve assemblies 31 and 32 and the shell 8, thereby retaining the valve assemblies in position.
  • Two circular sealing flanges 37 and 38 are provided on the compressor block in concentric spaced relationship. These particular flanges are provided with suitable 0 rings 39 and 40 which seal the space between the block and shell 8 thereby defining an annular space 41 into which gas compressed within the cylinders 19 and 26 is discharged.
  • the discharge gases are passed from the compressor through the discharge passage 42 which is a short connecting tube extending through the shell 8 and the shell 5.
  • suitable cavities may be incorporated in the annular space 41 to impart a m ufiling effect to the discharge gases which are passed from the various cylinders of the compressor. In order to introduce these gases into the various cylinders, suction gas is introduced through the opening 63 in the shell 4.
  • This opening 63 permits suction gas to pass into the motor compartment 13 and through the various suction ports 45.
  • the suction ports 45 are connected to annular spaces 90located beneath the valve assemblies 31 and 32.
  • crankshaft 30 comprises a straight portion which is adapted to be connected to the motor 56, a bearing portion 51 which is adapted to be journalled within the bearing 46, an eccentric portion adapted to be connected to the various connecting rods which are operatively associated with the pistons, a counterweight section 53 which is adapted to aid in counteracting the unbalance of the eccentric portion 52 and a lower bearing portion 54 which will be described more fully hereinafter.
  • the motor 56 comprises a stator 57 which is mounted within the motor flange portion 16 of the compressor block.
  • the stator is inductively connected to the rotor 58 which is force-fitted onto the crankshaft section 50.
  • Located and attached to the rotor 58 is a suitable counterweight 59 which is also adapted to aid in counteracting the unbalance of the eccentric portion of the crankshaft.
  • a suitable plug 60 is provided in the shell of the compressor in such a manner as to preserve the hermetic nature of the compressor. This plug 60 is connected by suitable conductors 61 to the stator 57.
  • the crankshaft 30 is journalled within a lower bearing 65 which is mounted in the lower bearing head 64.
  • This lower bearing head 64 is maintained in position by a suitable snap ring 62 which seats within an annular groove in the compressor block.
  • the bearing head also includes a thrust bearing 66 which has a central opening 67, the function of which will be described more fully hereinafter.
  • Located in the lower portion of the crankshaft adjacent the bearing portion 54 is a concentric hole 68 which constitutes the eye of the impeller of the pump which lubricates the various bearings in the compressor.
  • the eye is a vertically extending hole in communication with the radial hole 6 which extends to the annular space 71.
  • the vertical passage 70 which is in communication with the radial hole 69.
  • Oil which is pumped into the annular space 71 passes through the passage 72 into the filter 73 in which the oil is suitably filtered.
  • the oil that is forced into the vertical passage 70 passes upward to the discharge openings 75 which lubricate the connecting rods and the bearing 46, the construction of which will be defined more fully hereinafter.
  • the operation of the compressor is as follows: Suction gas is introduced through the opening 63 and the gas passes over the motor 56 suitably cooling the motor and then passes through the suction inlets 45 through the valve plates 31 and 32 into the cylinders 19 and 20 wherein the gas is compressed. The gas is then, on a discharge stroke, passed into the annular manifold 41 wherein, if desired, a suitable muffler construction may be employed and then passed through the discharge opening 42 out of the compressor.
  • the vertical passage 70 located within the crankshaft 30 will, after long shutdowns, be filled with refrigerant vapor at levels above the oil sump level indicated at 77. At startup after a prolonged shutdown, it will be necessary to remove this refrigerant vapor in order to prevent a vapor lock, which will starve the bearing surfaces and ultimately result in bearing failure.
  • the second problem is that, should uncontrolled venting be permitted, the lubricant passing from the hearing will pass over the outside surface of the bearing 46 and ultimately find its way to the various suction openings 45. This flow will be further encouraged by the passage of suction gas over the motor and bearing prior to entrance into the openings 45.
  • FIG. 2 there is shown a fragmentary sectional view of the bearing construction utilized in the present invention.
  • the vertical passage 70 extends up into the bearing 46.
  • the oil is permitted to reach the bearing surfaces for the purpose of lubricating said surfaces.
  • these two passages 81 and 82 extend into two vertically extending grooves 83 and 84 which are located in the bearing surface of the shaft. A better view of these grooves is shown in Figure 3.
  • the bearing itself is constructed of the bearing housing 46, having therein two bearing inserts 86 and 87. These inserts are spaced from one another and include an open space 85 therebetween. It will be noted from Figure -'2 that the grooves 83 and 84 extend beyond the bearing inserts 86 and 87.
  • this groove extends upwardly but does not reach the upper edge of the bearing insert 86; however, the lower portion of this groove 83 extends below the bearing insert 86 and places the lubricant passing through the passage 81 into communication with the annular space 85.
  • the vertical extending groove 84 overlaps both sides of the bearing insert 87, thereby placing the annular space 85 in communication with the crankcase.
  • An advantage of the present construction is that all the oil which is passed to the bearing 46 finds its way into the upper portion of the crankcase 14. As the oil passes into the crankcase, it falls upon the eccentric portion of the crankshaft and is thrown outwardly, finding its way into the various cylinders and thereby providing lubrication to the cylinder walls, pistons, and the wristpins of compression equipment.
  • the present invention provides a bearing construction which compensates for the lubrication requirements of the compressor bearing, and also provides lubrication for the compression equipment itself in an inexpensive and unique manner. Furthermore, this construction avoids the passage of quantities of oil into the motor compartment where the oil may find its way into the suction ports of the; compression equipment and ultimately affect the heat exchange qualities of the various heat exchange members in the refrigeration circuit. This is accomplished with the added feature that upon startup the possibilities of vapor lock to prevent adequate lubrication of the bearings is avoided by the positive venting of the bearings and the various oil passages in the crankshaft.
  • a reciprocating compressor the combination of cylinder means, a piston reciprocatingly mounted in said cylinder means, a crankcase, an upper bearing, a lower bearing, a vertically extending crankshaft journalled in said bearings and operatively connected to said piston, a motor connected to said crankshaft, a partition separating the motor from the crankcase, a lubrication pump located adjacent said lower bearing, a passage extending vertically in said crankshaft in communication with said pump, said upper bearing including first and second spaced bearing surfaces, a first groove in said crankshaft, a second groove in said crankshaft, said first and second grooves being in communication with the vertically extending passage in the crankshaft, said first groove being at least partially encompassed by the first bearing surface, the second groove being partially encompassed by the second bearing surface, said first and second grooves being in communication with an annular space between the first and second surfaces and the sec ond groove being connected to said crankcase, means for passing suction gas over the motor to cool said motor, whereby the compressor is a
  • a reciprocating compressor comprising cylinder means, a piston reciprocatingly mounted in said cylinder means, a crankcase, a vertically extending crankshaft operatively connected to said piston, a motor compartment, a motor located in said compartment and corn nected to said crankshaft, means for passing suction gas over said motor, a partition separating the crankcase and the motor compartment, an upper bearing located in and extending through said partition, a lower bearing, 3.
  • lubrication pump located adjacent said lower bearing, said crankshaft being journalled in said bearings, a vertically extending passage in said shaft in communication with said pump, a groove in said crankshaft partially encompassed by said upper bearing, said groove being in communication with the vertically extending passage and also in communication with the crankcase whereby lubricant and gases in the lubrication passages are vented into the crankcase without any substantial introduction of lubricant into the motor compartment.
  • crankshaft has an eccentric portion and the groove is located on the same side of the shaft as the eccentric portion.
  • the bearing comprises first and second spaced annular bearing-surf-aces separated by an annular space, a second groove in said crankshaft, said first mentioned groove being partially encompassed by the first surface and the second groove being partially encompassed by the second surface, said first and second grooves also being in communication with the annular space.
  • a hermetic compressor comprising a shell; a compressor block located in said shell and defining cylinder means, a crankcase, a motor cavity, and a partition between said motor cavity and crankcase; a bearing located in said partition; :a crankshaft; a piston reciprocatingly mounted in said cylinder means and operatively connected to said crankshaft; a motor located in said motor cavity and operatively connected to said crankshaft; said bearing having a surface; said crankshaft having a surface journalled against said bearing surface; a groove disposed in one of said last mentioned surfaces substantially parallel to the crankshaft axis; means for passing lubricant to said groove; means connecting the groove and the crankcase; means for maintaining the motor cavity at suction gas pressure and means for maintaining the crankcase at a pressure greater than suction gas pres- 7 sure, whereby the suction gas passes through the motor cavity without substantially entrapping any lubricant in said suction gas.
  • a compressor comprising a compression mechanism, a motor mounted above said compression mechanism, said motor and compression mechanism being connected by a vertically extending shaft, a partition separating the motor from the compression mechanism, a bearing located between said motor and said compression mechanism and journalling said shaft, means for introducing lubricant to said bearing, a vertically extending groove located in said shaft and being at least partially encompassed by said bearing, said groove being in communication with an area adjacent said compression mechanism and with said crankcase, whereby lubricant from said bearing is passed to and at least partially lubricates said compression mechanism, and means for passing suction gas over said motor to cool said motor, said gas passing adjacent said bearing without substantially entrapping any lubricant in said gas stream.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
US687997A 1957-10-03 1957-10-03 Compressor lubrication system Expired - Lifetime US2963113A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US687997A US2963113A (en) 1957-10-03 1957-10-03 Compressor lubrication system
CH6463758A CH366351A (de) 1957-10-03 1958-10-02 Gekapseltes Motor-Kolbenkompressor-Aggregat
DK356158AA DK111006B (da) 1957-10-03 1958-10-03 Kompressor til køleanlæg.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US687997A US2963113A (en) 1957-10-03 1957-10-03 Compressor lubrication system

Publications (1)

Publication Number Publication Date
US2963113A true US2963113A (en) 1960-12-06

Family

ID=24762692

Family Applications (1)

Application Number Title Priority Date Filing Date
US687997A Expired - Lifetime US2963113A (en) 1957-10-03 1957-10-03 Compressor lubrication system

Country Status (3)

Country Link
US (1) US2963113A (de)
CH (1) CH366351A (de)
DK (1) DK111006B (de)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3171588A (en) * 1962-05-22 1965-03-02 Westinghouse Electric Corp Hermetic compressors having vertical crankshafts
US3182901A (en) * 1963-11-12 1965-05-11 Westinghouse Electric Corp Compressor
US3229901A (en) * 1964-04-20 1966-01-18 Lennox Ind Inc Refrigerant compressor
US3248044A (en) * 1964-09-28 1966-04-26 Lennox Ind Inc Refrigerant compressor lubrication arrangement
FR2386789A1 (fr) * 1977-04-14 1978-11-03 Copeland Corp Lubrification des compresseurs de refrigeration
US4131396A (en) * 1977-04-07 1978-12-26 Sundstrand Corporation Hermetic compressor lubrication system with two-stage oil pump
US4153392A (en) * 1977-04-14 1979-05-08 Copeland Corporation Refrigeration compressor lubrication
FR2492471A1 (fr) * 1980-10-22 1982-04-23 Tjurikov Leonid Dispositif de lubrification de compresseur a arbre vertical
US4820212A (en) * 1987-10-15 1989-04-11 Outboard Marine Corporation Marine propulsion device bearing lubrication system
US4850819A (en) * 1987-11-20 1989-07-25 Copeland Corporation Motor compressor bearing assembly
US5980222A (en) * 1997-11-13 1999-11-09 Tecumseh Products Company Hermetic reciprocating compressor having a housing divided into a low pressure portion and a high pressure portion
US6494690B2 (en) * 2000-08-08 2002-12-17 Samsung Gwangju Electronics Co., Ltd. Hermetic compressor
US6582202B2 (en) * 1999-12-14 2003-06-24 Kabushiki Kaisha Toyota Jidoshokki Compressor and method of lubricating the compressor
US20100172774A1 (en) * 2007-06-05 2010-07-08 Sanden Corporation Compressor
US20150125322A1 (en) * 2013-11-07 2015-05-07 Jia Huei Microsystem Refrigeration Co., Ltd Rotary compressor
US20210270271A1 (en) * 2018-07-11 2021-09-02 Fujitsu General Limited Compressor

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE73776C (de) * W. LEFELDT & LENTSCH in Schöningen, Fabrikstr. 46 Einrichtung zur gleichzeitigen Schmierung des Spur- und des Halslagers einer stehenden Welle von einem Oelgefäfs aus
US946133A (en) * 1909-03-25 1910-01-11 Minneapolis Motor & Truck Co Lubricating device for gas-engines.
US2038131A (en) * 1933-08-19 1936-04-21 Richard William Edward Lubricating system for compressors
GB568991A (en) * 1944-02-05 1945-04-30 Standard Pressed Steel Co An improved method of lubricating refrigerator motor-compressors
US2725118A (en) * 1947-04-26 1955-11-29 Gen Motors Corp Washing machine lubricating system
US2743627A (en) * 1952-10-14 1956-05-01 Gen Motors Corp Sumps for tank and other similar types of vehicle transmissions
US2752088A (en) * 1952-05-20 1956-06-26 Whirlpool Seeger Corp Hermetically sealed radial compressor assembly
GB768058A (en) * 1954-02-18 1957-02-13 Heinz Teves Lubricating device for a motor-driven air compressor
DK65377A (da) * 1976-03-12 1977-09-13 Siemens Ag Overvagningsindretning til kolebeholdere, navnlig kolecontainere

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE73776C (de) * W. LEFELDT & LENTSCH in Schöningen, Fabrikstr. 46 Einrichtung zur gleichzeitigen Schmierung des Spur- und des Halslagers einer stehenden Welle von einem Oelgefäfs aus
US946133A (en) * 1909-03-25 1910-01-11 Minneapolis Motor & Truck Co Lubricating device for gas-engines.
US2038131A (en) * 1933-08-19 1936-04-21 Richard William Edward Lubricating system for compressors
GB568991A (en) * 1944-02-05 1945-04-30 Standard Pressed Steel Co An improved method of lubricating refrigerator motor-compressors
US2725118A (en) * 1947-04-26 1955-11-29 Gen Motors Corp Washing machine lubricating system
US2752088A (en) * 1952-05-20 1956-06-26 Whirlpool Seeger Corp Hermetically sealed radial compressor assembly
US2743627A (en) * 1952-10-14 1956-05-01 Gen Motors Corp Sumps for tank and other similar types of vehicle transmissions
GB768058A (en) * 1954-02-18 1957-02-13 Heinz Teves Lubricating device for a motor-driven air compressor
DK65377A (da) * 1976-03-12 1977-09-13 Siemens Ag Overvagningsindretning til kolebeholdere, navnlig kolecontainere

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3171588A (en) * 1962-05-22 1965-03-02 Westinghouse Electric Corp Hermetic compressors having vertical crankshafts
US3182901A (en) * 1963-11-12 1965-05-11 Westinghouse Electric Corp Compressor
US3229901A (en) * 1964-04-20 1966-01-18 Lennox Ind Inc Refrigerant compressor
US3248044A (en) * 1964-09-28 1966-04-26 Lennox Ind Inc Refrigerant compressor lubrication arrangement
US4131396A (en) * 1977-04-07 1978-12-26 Sundstrand Corporation Hermetic compressor lubrication system with two-stage oil pump
FR2386789A1 (fr) * 1977-04-14 1978-11-03 Copeland Corp Lubrification des compresseurs de refrigeration
US4153392A (en) * 1977-04-14 1979-05-08 Copeland Corporation Refrigeration compressor lubrication
FR2492471A1 (fr) * 1980-10-22 1982-04-23 Tjurikov Leonid Dispositif de lubrification de compresseur a arbre vertical
US4820212A (en) * 1987-10-15 1989-04-11 Outboard Marine Corporation Marine propulsion device bearing lubrication system
US4850819A (en) * 1987-11-20 1989-07-25 Copeland Corporation Motor compressor bearing assembly
US5980222A (en) * 1997-11-13 1999-11-09 Tecumseh Products Company Hermetic reciprocating compressor having a housing divided into a low pressure portion and a high pressure portion
US6155805A (en) * 1997-11-13 2000-12-05 Tecumseh Products Company Hermetic compressor having acoustic insulator
US6582202B2 (en) * 1999-12-14 2003-06-24 Kabushiki Kaisha Toyota Jidoshokki Compressor and method of lubricating the compressor
US6494690B2 (en) * 2000-08-08 2002-12-17 Samsung Gwangju Electronics Co., Ltd. Hermetic compressor
US20100172774A1 (en) * 2007-06-05 2010-07-08 Sanden Corporation Compressor
US20150125322A1 (en) * 2013-11-07 2015-05-07 Jia Huei Microsystem Refrigeration Co., Ltd Rotary compressor
US20210270271A1 (en) * 2018-07-11 2021-09-02 Fujitsu General Limited Compressor
US11879465B2 (en) * 2018-07-11 2024-01-23 Fujitsu General Limited Compressor

Also Published As

Publication number Publication date
DK111006B (da) 1968-04-29
CH366351A (de) 1962-12-31

Similar Documents

Publication Publication Date Title
US2963113A (en) Compressor lubrication system
US3162360A (en) Compressor venting system
US5088897A (en) Swash plate type compressor with internal refrigerant and lubricant separating system
US6155805A (en) Hermetic compressor having acoustic insulator
US4470772A (en) Direct suction radial compressor
US4838769A (en) High side scotch yoke compressor
US4834627A (en) Compressor lubrication system including shaft seals
US4290345A (en) Refrigerant compressors
EP1339987B1 (de) Hermetischer verdichter
US3008628A (en) Compressor
US5221191A (en) Horizontal rotary compressor
US4321019A (en) Swash plate type compressor
US3334808A (en) Compressor lubrication arrangement
US4842492A (en) Compressor discharge muffler having cover plate
US5702236A (en) Reciprocating piston type compressor having a discharge chamber with a plurality of pulsation attenuating subchambers
US3008629A (en) Compressor
US2846140A (en) Refrigeration compressor
US4516916A (en) Oil cooled, hermetic refrigerant compressor
US5062773A (en) Swash plate type refrigerant compressor with a separator of refrigerant gas and lubricant oil
US3253776A (en) Compressor lubrication arrangement
KR100235511B1 (ko) 양두 피스톤식 압축기
US3259307A (en) Hermetic refrigerant compressors
US2673026A (en) Hermetic motor-compressor unit
US3171589A (en) Hermetic motor compressor unit
US3171588A (en) Hermetic compressors having vertical crankshafts