EP0322531A2 - Gasleit der Schalldämpfungseinrichtung für Drehkolbenverdichter - Google Patents

Gasleit der Schalldämpfungseinrichtung für Drehkolbenverdichter Download PDF

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Publication number
EP0322531A2
EP0322531A2 EP88117513A EP88117513A EP0322531A2 EP 0322531 A2 EP0322531 A2 EP 0322531A2 EP 88117513 A EP88117513 A EP 88117513A EP 88117513 A EP88117513 A EP 88117513A EP 0322531 A2 EP0322531 A2 EP 0322531A2
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EP
European Patent Office
Prior art keywords
muffler
discharge
gas
bearing
cylinder block
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
EP88117513A
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English (en)
French (fr)
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EP0322531B1 (de
EP0322531A3 (en
Inventor
Arturo L. Ortiz
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.)
Tecumseh Products Co
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Tecumseh Products Co
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Filing date
Publication date
Application filed by Tecumseh Products Co filed Critical Tecumseh Products Co
Publication of EP0322531A2 publication Critical patent/EP0322531A2/de
Publication of EP0322531A3 publication Critical patent/EP0322531A3/en
Application granted granted Critical
Publication of EP0322531B1 publication Critical patent/EP0322531B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing
    • F04C29/065—Noise dampening volumes, e.g. muffler chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing
    • F04C29/068—Silencing the silencing means being arranged inside the pump housing

Definitions

  • This invention pertains to rotary compressors for compressing refrigerant in refrigeration systems such as air conditioners, refrigerators, and the like.
  • the invention relates to discharge gas routing systems for such compressors to reduce noise pulsations and to provide cooler discharge gas.
  • prior art hermetic rotary compressors comprise a housing which is hermetically sealed. Located in the housing are an electric motor and a compressor mechanism. The electric motor is connected to a crankshaft which has an eccentric portion thereon. The eccentric portion of the crankshaft is located within a compression chamber bore of the compressor cylinder block. A roller located within the compression chamber is mounted on the eccentric portion of the crankshaft and is driven thereby. The roller cooperates with a sliding vane to compress refrigerant within the bore of the cylinder block.
  • Rotary hermetic compressors of the type herein disclosed generally have a pressurized or high side sealed housing. Compressed gas from within the compression chamber is discharged through a gas routing system into the compressor housing. This discharge gas exhibits undesirable properties with respect to achieving quiet and efficient operation of the compressor. Specifically, noise pulsations are ordinarily caused by the discharge gas due to opening and closing of valving in response to the cyclical compression and suction created in the compression chamber within the cylinder block. Under certain operating conditions, and particularly for higher capacity compressors, these noise pulsations become objectionable to the consumer.
  • Another problem associated with rotary hermetic compressors, wherein pressurized gas is discharged into the sealed housing is a hot operating environment which tends to decrease the efficiency of the electric motor. High operating temperatures also result in undesirable high tempera­tures for the lubricating oil, the housing, and the discharge gas.
  • Prior art gas routing systems for rotary com­pressors have generally addressed the problem of excessive noise pulsations by providing a single discharge port in either of the main or outboard bearings through which compressed gas is removed from the compression chamber into a muffler or a series of mufflers.
  • a single discharge port in either of the main or outboard bearings through which compressed gas is removed from the compression chamber into a muffler or a series of mufflers.
  • the compressed gas is discharged through a bearing into a muffler cavity, it is rerouted through passageways extending through both bearings and the cylinder block and then through an auxiliary muffler system or directly into the housing.
  • Another prior art gas routing system provides for multiple discharge ports in the sidewall of the cylindrical compression chamber providing communication between the compression chamber and a discharge chamber defined within the cylinder block. From the discharge chamber, discharge gas passes through a single port extending through a bearing into a muffler before being discharged into the interior of the compressor housing. By providing a plurality of discharge ports in the sidewall of the compression chamber, cooler gas is discharged into the discharge chamber defined within the cylinder block. The gas is then recompressed and discharged through a single smaller opening in one of the bearings.
  • a disadvantage of the prior art solutions wherein compressed gas is discharged through a single opening in one of the main or outboard bearings is that a single opening in a rotary compressor cannot be made large enough to sufficiently reduce the level of noise pulsations. Furthermore, the temperature of gas discharged through a limited size opening is hotter than can otherwise be achieved though larger openings, thus increasing operating temperatures of the compressor and reducing compressor efficiency.
  • the prior art rotary compressor design utilizing a plurality of discharge ports in the sidewall of the cylinder provides a baffling chamber in the cylinder block.
  • the discharge gas is ultimately discharged through one port in one of the bearings into a single muffler, thereby maintaining objectionable sound pulsations.
  • a further problem with a rotary compressor having a discharge chamber defined within the cylinder block is that compressor size may be increased by the need for space surrounding the compression chamber.
  • heat generated in the compression chamber and dissipated into the cylinder block maintains the discharge gas within the discharge chamber at higher temperatures, thereby decreasing its ability to cool compressor components when discharged within the housing.
  • the present invention overcomes the disadvantages of the above-described prior art hermetic rotary compressors by providing an improved discharge gas routing system for discharging gas from within the compression chamber of the cylinder block to the interior of the sealed compressor housing.
  • the invention provides a rotary compressor comprising a cylinder block defining a cylinder, and a main bearing and an outboard bearing located on respective ends of the cylinder block enclosing the cylinder at each of its opposite ends.
  • compressed gas from within the cylinder is discharged through first and second discharge ports extending through the main and outboard bearings, respectively. Accordingly, flow of the compressed gas discharged from within the cylinder is divided between the first and second discharge ports.
  • the invention provides, in one form thereof, a gas routing system for a rotary compressor wherein compressed gas from within the compression chamber in the cylinder block is discharged through respective ports in the main and outboard bearings into mufflers mounted on the outside of the main and outboard bearings.
  • the discharge gas is expanded upon entering each of the mufflers, whereby cooling of the gas occurs.
  • the expanded gas of one of the mufflers flows through a passageway extending through the main and outboard bearings and the cylinder block and is combined with the expanded discharge gas in the other muffler prior to being discharged into the interior of a hermetically sealed housing.
  • An advantage of the structure of the present invention is that compressed gas from within the compression chamber can be discharged axially outwardly through both the main and outboard bearings, thereby increasing the effective size of the discharge port previously provided in only one of the main or outboard bearings. This results in noise pulsations of a lesser magnitude and discharge gas at lower temperatures.
  • gas expanded into one muffler may be recompressed by flowing through a constricting passageway to the other muffler, whereupon the constricted gas flow is reexpanded and combined with the discharge gas in the other muffler.
  • This gas that is expanded, recompressed, and reexpanded is cooler than gas discharged directly into the other muffler.
  • the routing of gas into one muffler and through a constricting passageway into the other muffler provides additional baffling to reduce noise pulsations.
  • a still further advantage of the rotary compressor gas routing system in accordance with the present invention is that gas discharged through both the main and outboard bearings into separate mufflers and then combined into one of the mufflers is cooler than gas that would ordinarily be discharged directly into a single muffler.
  • the muffler in which the cooler gas is combined may be in direct fluid communication with the oil in the oil sump of the compressor housing, thereby providing greater cooling of the oil than is ordinarily achievable.
  • Yet another advantage of the gas routing system according to the present invention is that flow of the combined discharge gas exhibiting a cooler temperature may be directed at the stator windings of the electric motor in order to provide better cooling and more efficient operation thereof. Also, the cooler discharge gas directed for cooling the stator windings contributes to an overall cooler temperature within the sealed compressor housing.
  • Yet another advantage of the structure of the present invention in one form thereof, is that the passageways provided between the compression chamber and the mufflers, between the two mufflers, and between one of the mufflers and the interior of the compressor housing are comprised of substantially aligned holes through the main and outboard bearings and the cylinder block, whereby the mufflers do not require tubing connections, thus contributing to ease and lower costs of manufacturing. Furthermore, the plurality of holes extending through the main and outboard bearings and the cylinder block reduce the mass of the cylinder and bearings and require no additional tubing.
  • the paramount advantages of the gas routing system in accordance with the present invention are reduced sound levels achieved through the axial discharge of compressed gas through both of the bearings, and improved efficiency due to lower operating temperatures within the compressor housing, including lower oil temperatures, lower stator winding temperatures, etc.
  • the rotary compressor of the present invention in one form thereof, provides a cylinder block defining a cylinder, and a main bearing and an outboard bearing located on respective ends of the cylinder block to close the cylinder at each of its opposite ends.
  • An eccentric roller is rotationally mounted in the cylinder, whereby rotation of the roller in the cylinder results in compressed gas within the cylinder.
  • a rotatable crankshaft is operably supported by the main and outboard bearings and is drivingly connected to the roller for rotation thereof.
  • Means for discharging the compressed gas from within the cylinder is provided, comprising a first discharge port in communication with and extending from the cylinder through the main bearing and a second discharge port in communication with and extending from the cylinder through the outboard bearing. Accordingly, flow of the compressed gas discharge from within the cylinder is divided between the first and second discharge ports.
  • a hermetic rotary compressor having a housing, an electric motor operatively disposed within the housing and including a rotatable rotor, and a cylinder block disposed within the housing in axial alignment with the rotor, the cylinder block defining a cylinder therein.
  • a main bearing is located on the end of the cylinder block adjacent to the motor, and closes the respective end of the cylinder.
  • An outboard bearing is located on the end of the cylinder block opposite of the motor, and closes the respective end of the cylinder.
  • a crankshaft is rotatably connected to the rotor and is operably supported by the main and outboard bearings.
  • the discharging means comprises a first discharge port communicating with the cylinder and extending through the main bearing, and a second discharge port communicating with the cylinder and extending through the outboard bearing.
  • the rotary hermetic compressor of the instant invention further provides, in one form thereof, a vertically disposed hermetically sealed cylindrical casing.
  • An electric motor unit is mounted within the casing and includes a rotatable rotor and a stator.
  • the hermetic compressor also includes an oil sump located in a lower portion of the housing and a cylinder block having a compression chamber defined therein.
  • An upper bearing is mounted to the upper end of the cylinder and defines an upper end wall of the chamber.
  • the upper bearing has an upper discharge port extending therethrough.
  • a lower bearing is mounted to the lower end of the cylinder block and defines a lower end wall of the compression chamber.
  • the lower bearing has a lower discharge port extending therethrough.
  • a crankshaft is drivingly connected to the rotor and operably supported by the upper and lower bearings.
  • Piston means for compressing gas within the chamber is drivingly connected to the crankshaft.
  • An upper muffler is mounted to the top of the upper bearing, whereby the upper discharge port provides gaseous communication between the chamber and the upper muffler.
  • a lower muffler is mounted to the bottom of the lower bearing and is in fluid contact with oil in the oil sump. The lower discharge port provides gaseous communication between the chamber and the lower muffler, whereby compressed gas from within the chamber is discharged and expanded into the upper and lower mufflers.
  • the compressor of this form may provide constricting gas passage means communicating between the upper and lower mufflers for constricting expanded discharge gas from the upper muffler and delivering it to the lower muffler for reexpansion therein.
  • the lower muffler then communicates with the inside of the housing by means of discharge gas passage means for constricting the expanded discharge gas from the lower muffler and delivering it to the inside of the inside of the housing in an upward direction toward the motor for cooling thereof.
  • a compressor having a housing generally designated at 10.
  • the housing has a top portion 12, a lower portion 14 and a central portion 16.
  • the three housing portions are hermetically secured together as by welding or brazing.
  • a flange 18 is welded to the bottom of housing 10 for mounting the compressor.
  • a motor Located inside the hermetically sealed housing is a motor generally designated at 20 having a stator 22 and a rotor 24.
  • the stator is provided with windings 26.
  • the stator is secured to the housing 10 by an interference fit such as by shrink fitting.
  • the rotor 24 has a central aperture 28 provided therein into which is secured a crank­shaft 30 by an interference fit.
  • a terminal cluster 32 is provided on the top portion 12 of the compressor for connecting the compressor to a source of electric power.
  • a post 34 is welded to top portion 12 for mounting a protective cover (not shown) for terminal cluster 32.
  • a refrigerant discharge tube 36 extends through top portion 12 of the housing and has an end 38 thereof extending into the interior of the compressor as shown.
  • the tube is sealingly connected to housing 10 at 40 as by soldering.
  • a suction tube 42 extends into the interior of compressor housing 10 and is sealed thereto as by soldering, brazing, or welding.
  • the outer end 44 of suction tube 42 is connected to accumulator 46 which has support plates 48 disposed therein for supporting a filtering mesh 50.
  • a bracket 52 secures accumulator 46 to the outside wall of housing 10.
  • crankshaft 30 is provided with an eccentric portion 54 which revolves around the crankshaft axis as crankshaft 30 is rotatably driven by rotor 24.
  • Counterweights 56 and 58 are provided to balance eccentric 54 and are secured to respective end rings 60 and 62 of rotor 24 by riveting.
  • Crankshaft 30 is journalled in a main bearing 64 having a cylindrical journal portion 66 and a generally flat planar mounting portion 68.
  • Planar portion 68 is secured to housing 10 at three points 70 such as by welding of flanges 72 to the housing, as best illus­trated in Fig. 2.
  • a second bearing or journal 74 is also shown disposed in the lower part of housing 10.
  • Outboard bearing 74 is provided with a journal portion 76 having aperture 78 therein and a generally planar portion 80.
  • Crankshaft 30 has a lower portion 82 journalled in journal portion 76 of outboard bearing 74 as illustrated in Fig. 1.
  • a compressor cylinder block 84 Located intermediate main bearing 64 and outboard bearing 74 is a compressor cylinder block 84. Cylinder block 84 defines a cylinder therein, referred to herein as compression chamber 85. Compressor cylinder block 84, outboard bearing 74, and main bearing 64 are secured together by means of twelve bolts 86, two of which are indicated in Fig. 1. By referring to Fig. 2, it can be seen that six threaded holes 88 are provided in cylinder block 84 for securing bearings 64, 74 and cylinder block 84 together. Of the twelve bolts 86, six of them secure outboard bearing 74 to cylinder block 84 and are threaded into holes 88. The remaining six bolts secure main bearing 64 to cylinder block 84 and are also threaded into holes 88. An upper discharge muffler plate 90 is secured to main bearing 64 and a lower discharge muffler plate 92 is secured to outboard bearing 74 by bolts 86, as indicated in Fig. 1.
  • cylinder block 84 has a vane slot 94 provided in the cylindrical side wall 96 thereof into which is received a sliding vane 98.
  • Roller 100 is provided which surrounds eccentric portion 54 of crankshaft 30 and revolves around the axis of crankshaft 30 and is driven by eccentric 54. Tip 102 of sliding vane 98 is in continuous engagement with roller 100 as vane 98 is urged against the roller by spring 104 received in spring pocket 106. Referring to Fig. 2, during operation, as roller 100 rolls around compression chamber 85, refrigerant will enter chamber 85 through suction tube 42.
  • roller 100 the compression volume enclosed by roller 100, cylinder wall 96, and sliding vane 98 will decrease in size as roller 100 revolves clockwise around compression chamber 85. Refrigerant contained in that volume will therefore be compressed and after compression will exit through a relief 110 in sidewall 96.
  • the aforementioned compressor mechanism is presented by way of illustration only, it being contemplated that other piston means for compressing gas within chamber 85 may be used without departing from the spirit and scope of the present invention.
  • the rotary compressor disclosed herein provides a lubrication system for lubricating components of the compressor, including eccentric 54 and roller 100.
  • a lubrication system for lubricating components of the compressor, including eccentric 54 and roller 100.
  • Such a system is disclosed in U. S. Patent No. 4,640,669, assigned to the same assignee as the present invention, the disclosure of which is hereby incorporated by reference.
  • FIGs 1 and 3 components of an exemplary lubrication system are shown, including aperture 112 in crankshaft 30 into which oil is drawn from oil in oil sump 114.
  • Aperture 112 delivers oil to opening 116 in crankshaft 30 to lubricate roller 100.
  • Oil also flows into annular chamber 118 and radially outwardly therefrom through passageway 120, as described more fully in U. S. Patent No. 4,640,669.
  • a conventional oil paddle 122 is axially mounted to end portion 82 of crankshaft 30 for contact with oil in oil sump 114.
  • the discharge gas routing system of the present invention provides means for discharging compressed gas from within chamber 85 and comprises a first discharge port 130 in communication with chamber 85 and extending through main bearing 64.
  • a first discharge valve 132 and valve retainer 134 are mounted on outer surface 136 by means of a rivet 138.
  • a second discharge port 140 extends through outboard bearing 74.
  • a second discharge valve 142 and valve retainer 144 are mounted on outer surface 146 by means of a rivet 148.
  • the gas is then discharged into first and second discharge mufflers comprising muffler chambers 150 and 152 defined by discharge muffler plates 90 and 92 and the outer surfaces 136 and 146 of bearings 64 and 74, respectively.
  • a collar 154 is provided in muffler plate 90 to sealingly engage over journal portion 66 as by a slip-fit.
  • a collar 156 is provided in muffler plate 92 to sealingly engage over journal portion 76.
  • Figure 4 illustrates the routing of discharge gas during operation of the compressor. More specif­ically, compressor refrigerant gas is discharged through relief 110 in cylinder block 84 and flows axially outwardly in opposite directions as illustrated by directional lines A and B. With respect to the vertical orientation of the compression mechanism in Figure 4, the discharge gas indicated by line A flows through discharge port 130 in upper main bearing 64.
  • the discharge gas Upon passing by discharge valve 132 and valve retainer 134, the discharge gas is expanded into upper muffler chamber 150 defined by muffler plate 90 and the top surface 136 of main bearing 64. The expansion of the discharge gas upon entry into muffler chamber 150 provides cooling of the discharge gas.
  • Discharge gas discharged axially downwardly as indicated by directional arrow B flows through discharge port 140 in lower outboard bearing 74 and passes through discharge valve 142 and valve retainer 144 before entering lower muffler chamber 152 defined by muffler plate 92 and outer surface 146 of outboard bearing 74. As the discharge gas is expanded into discharge space 152, a certain amount of cooling of the gas is achieved.
  • the present invention in one form thereof, provides for the discharge gas in upper muffler chamber 150 to be routed into a constricting gas passageway 160, as indicated by directional arrow C.
  • Constricting gas passageway 160 comprises holes 160a in main bearing 64, 160b in cylinder block 84, and 160c in outboard bearing 74. Holes 160a, 160b, and 160c are axially aligned to provide passageway 160, through which laminar flow of discharge gas is achieved, as indicated by directional arrow D.
  • Constricting gas passageway 160 provides communication between muffler chambers 150 and 152 located at opposite ends of the compressor mechanism, and means for constricting discharge gas flowing therebetween.
  • the discharge gas in muffler chamber 150 indicated by directional arrow C enters hole 160a in main bearing 64, proceeds through hole 160b in cylinder block 84, and finally passes through 160c in outboard bearing 74 before being expanded into discharge space 152.
  • the expanded gas in muffler chamber 150 is recompressed during flow through passageway 160.
  • the gas is once again cooled and combined with the gas discharged directly into chamber 152 through discharge port 140.
  • the combined gas is cooler than would ordinarily be achieved by merely discharging all of the gas from compression chamber 85 through the outboard bearing into the lower muffler.
  • the gas discharged through main bearing 64 into discharge space 150 and then recompressed during flow through passageway 162 before entering discharge space 152 has undergone two stages of expansion and cooling. Also, the routing of gas through the upper muffler and then through passageway 60 prior to entering the lower muffler provides several additional stages of baffling to reduce sound.
  • Discharge passageway 162 in accord with one form of the present invention, comprises holes 162a in outboard bearing 74, 162b in cylinder block 84, 162c in main bearing 64, and 162d in muffler plate 90.
  • a second discharge passageway 164 may also be provided in similar fashion, comprising holes 164a, 164b, 164c, and 164d.
  • the combined discharge gas in chamber 152 is discharged through passageways 162 and 164 as indicated by directional arrows F and G, respectively.
  • the discharge gas exiting passageways 162 and 164 is directed upwardly toward electric motor unit 20. In this way, the cooler discharge gases achieved by the gas routing system of the present invention provide more effective cooling of the stator windings 26.
  • discharge port 130 in the main bearing is preferably sized smaller than discharge port 140 in the outboard bearing in order to provide the necessary flow rate for gas to travel the longer distance through con­stricting passageway 160 before entering muffler chamber 152.
  • discharge port 130 is .181 inches in diameter while discharge port 140 is .312 inches in diameter.
  • passageways 160, 162, and 164 are all approximately .343 inches in diameter.
EP88117513A 1987-12-24 1988-10-21 Gasleit der Schalldämpfungseinrichtung für Drehkolbenverdichter Expired - Lifetime EP0322531B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13836587A 1987-12-24 1987-12-24
US138365 1987-12-24

Publications (3)

Publication Number Publication Date
EP0322531A2 true EP0322531A2 (de) 1989-07-05
EP0322531A3 EP0322531A3 (en) 1990-03-07
EP0322531B1 EP0322531B1 (de) 1991-12-27

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EP88117513A Expired - Lifetime EP0322531B1 (de) 1987-12-24 1988-10-21 Gasleit der Schalldämpfungseinrichtung für Drehkolbenverdichter

Country Status (6)

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EP (1) EP0322531B1 (de)
JP (1) JPH01170789A (de)
KR (1) KR910008213B1 (de)
BR (1) BR8806342A (de)
CA (1) CA1330976C (de)
DE (1) DE3867220D1 (de)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
EP0671562A2 (de) * 1994-02-10 1995-09-13 Kabushiki Kaisha Toshiba Hermetischer Verdichter
WO2004102001A1 (en) * 2003-05-13 2004-11-25 Lg Electronics Inc. Rotary compressor
EP1967738A1 (de) * 2005-12-28 2008-09-10 Daikin Industries, Ltd. Verdichter
CN100455813C (zh) * 2004-11-30 2009-01-28 乐金电子(天津)电器有限公司 旋转式压缩机的消声器防漏装置

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Publication number Priority date Publication date Assignee Title
CN104214100B (zh) * 2013-06-05 2018-08-07 珠海格力节能环保制冷技术研究中心有限公司 压缩机及具有其的空调器
CN111271279B (zh) * 2018-12-04 2022-06-28 上海海立电器有限公司 压缩机及其装配方法
CN111271278B (zh) * 2018-12-04 2022-06-21 上海海立电器有限公司 压缩机及其装配方法

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US4457671A (en) * 1981-05-11 1984-07-03 Tokyo Shibaura Denki Kabushiki Kaisha Hermetic type rotary compressor with silencer means
JPS61279794A (ja) * 1985-06-04 1986-12-10 Matsushita Electric Ind Co Ltd 密閉型圧縮機
US4640669A (en) * 1984-11-13 1987-02-03 Tecumseh Products Company Rotary compressor lubrication arrangement
JPS62214292A (ja) * 1986-03-12 1987-09-21 Sanyo Electric Co Ltd 圧縮機の消音装置
US4730996A (en) * 1985-07-29 1988-03-15 Kabushiki Kaisha Toshiba Rotary compressor with two discharge valves having different frequencies

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JPS62147086A (ja) * 1985-12-19 1987-07-01 Matsushita Electric Ind Co Ltd 密閉型電動圧縮機

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US4457671A (en) * 1981-05-11 1984-07-03 Tokyo Shibaura Denki Kabushiki Kaisha Hermetic type rotary compressor with silencer means
US4640669A (en) * 1984-11-13 1987-02-03 Tecumseh Products Company Rotary compressor lubrication arrangement
JPS61279794A (ja) * 1985-06-04 1986-12-10 Matsushita Electric Ind Co Ltd 密閉型圧縮機
US4730996A (en) * 1985-07-29 1988-03-15 Kabushiki Kaisha Toshiba Rotary compressor with two discharge valves having different frequencies
JPS62214292A (ja) * 1986-03-12 1987-09-21 Sanyo Electric Co Ltd 圧縮機の消音装置

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Title
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PATENT ABSTRACTS OF JAPAN, vol. 12, no. 67 (M-673)[2914], 2nd March 1988; & JP-A-62 214 292 (SANYO ELECTRIC CO., LTD) 21-09-1987 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0671562A2 (de) * 1994-02-10 1995-09-13 Kabushiki Kaisha Toshiba Hermetischer Verdichter
EP0671562A3 (de) * 1994-02-10 1995-11-02 Toshiba Kk Hermetischer Verdichter.
US5579653A (en) * 1994-02-10 1996-12-03 Kabushiki Kaisha Toshiba Closed-type compressor, and refrigerating unit, refrigerator and air conditioner each utilizing the compressor
WO2004102001A1 (en) * 2003-05-13 2004-11-25 Lg Electronics Inc. Rotary compressor
CN100455813C (zh) * 2004-11-30 2009-01-28 乐金电子(天津)电器有限公司 旋转式压缩机的消声器防漏装置
EP1967738A1 (de) * 2005-12-28 2008-09-10 Daikin Industries, Ltd. Verdichter
EP1967738A4 (de) * 2005-12-28 2013-03-27 Daikin Ind Ltd Verdichter

Also Published As

Publication number Publication date
CA1330976C (en) 1994-07-26
DE3867220D1 (de) 1992-02-06
EP0322531B1 (de) 1991-12-27
JPH01170789A (ja) 1989-07-05
KR890010419A (ko) 1989-08-08
EP0322531A3 (en) 1990-03-07
KR910008213B1 (ko) 1991-10-11
BR8806342A (pt) 1989-08-15

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