US20070074534A1 - Refrigerant compressor and refrigerant cycle device including the same - Google Patents

Refrigerant compressor and refrigerant cycle device including the same Download PDF

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Publication number
US20070074534A1
US20070074534A1 US11/526,574 US52657406A US2007074534A1 US 20070074534 A1 US20070074534 A1 US 20070074534A1 US 52657406 A US52657406 A US 52657406A US 2007074534 A1 US2007074534 A1 US 2007074534A1
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United States
Prior art keywords
refrigerant
oil
sealed container
compressor
main body
Prior art date
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Abandoned
Application number
US11/526,574
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English (en)
Inventor
Kazuya Sato
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.)
Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Assigned to SANYO ELECTRIC CO., LTD. reassignment SANYO ELECTRIC CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SATO, KAZUYA
Publication of US20070074534A1 publication Critical patent/US20070074534A1/en
Abandoned 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
    • 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
    • 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
    • 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/123—Fluid connections
    • 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
    • F04C29/02—Lubrication; Lubricant separation
    • 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
    • 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
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • 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
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/806—Pipes for fluids; Fittings therefor
    • 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
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/809—Lubricant sump
    • 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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary 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
    • F25B45/00—Arrangements for charging or discharging refrigerant

Definitions

  • the present invention relates to a refrigerant compressor which includes, in a sealed container, a driving element and a compression element driven by the driving element and which discharges a refrigerant compressed by the compression element from the sealed container.
  • the present invention also relates to a refrigerant cycle device including the refrigerant compressor.
  • a refrigerant compressor such as a rotary compressor including, in a sealed container, a driving element and a rotary compression element driven by the driving element, a refrigerant gas is sucked from a suction port of the rotary compression element into a cylinder on the side of a low-pressure chamber.
  • the gas is compressed by an operation of a roller and a vane to form a high-temperature high-pressure refrigerant gas.
  • an oil reservoir is disposed in a bottom part of the sealed container, and an oil is pumped up from the oil reservoir by an oil pump (oil supply means) attached to one end (lower end) of a rotation shaft, and supplied to sliding portions and the like of the rotary compression element to lubricate and seal the element (see, e.g., Japanese Patent Application Laid-Open No. 2004-27970).
  • a servicing pipe for introducing the refrigerant and the oil is attached beforehand as one of the pipes which connect devices constituting the refrigerant circuit to one another, and the refrigerant and the oil are introduced while drawing a vacuum in the refrigerant circuit.
  • a passage resistance is increased so as to sufficiently reduce the pressure of the refrigerant in the capillary tube, the capillary tube is closed by the oil discharged into the refrigerant circuit, and this causes a trouble in an operation of the device.
  • the present invention has been developed to solve the problem of such a conventional technology, and an object thereof is to provide a refrigerant compressor which solves a disadvantage that oil flows out of the refrigerant compressor during introduction of the oil and in which an amount of the oil to be introduced is suppressed as much as possible but a sufficient amount of the oil can be secured. Another object is to provide a refrigerant cycle device including the refrigerant compressor.
  • a refrigerant compressor of the present invention comprises, in a sealed container, a driving element, and a compression element driven by the driving element, the refrigerant compressor being configured to discharge a refrigerant compressed by the compression element from the sealed container, the refrigerant compressor further comprising an oil reservoir constituted in a bottom part of the sealed container; and a servicing pipe attached to the sealed container to introduce the refrigerant and an oil into the sealed container.
  • the sealed container of the above invention includes a container main body having a longitudinally long cylindrical shape, and an end cap which closes an upper-end opening of this container main body, the compression element is contained in a lower part of the container main body, the driving element is disposed in an upper part of the container main body, the oil reservoir is constituted in a bottom part of the container main body, and the servicing pipe is attached to the container main body above the driving element.
  • a refrigerant cycle device of the present invention comprises: a refrigerant circuit constituted by connecting the refrigerant compressor of the above invention, a radiator, throttle means, an evaporator and the like to one another by pipes.
  • the refrigerant cycle device of the present invention is characterized in that in the above invention, a carbon dioxide refrigerant is used as the refrigerant.
  • the sealed container is provided with the servicing pipe for introducing the refrigerant and the oil into the sealed container, the refrigerant and the oil can directly be introduced from the servicing pipe into the sealed container.
  • the compression element is contained in the lower part of the container main body, the driving element is disposed in the upper part of the container main body, the oil reservoir is constituted in the bottom part of the container main body, and the servicing pipe is attached to the container main body above the driving element, it is possible to easily introduce the refrigerant and the oil from a position which does not interfere with the driving element and the compression element and which is above the oil reservoir.
  • the refrigerant compressor of the above invention since the refrigerant compressor of the above invention, the radiator, the throttle means and the evaporator are connected to one another by the pipes to constitute the refrigerant circuit, it is possible to solve a disadvantage that the oil flows out of the refrigerant compressor during the introduction of the oil, and it is possible to secure an operation performance of the refrigerant cycle device including the refrigerant compressor.
  • FIG. 1 is a longitudinal side view of a rotary compressor in one embodiment of the present invention.
  • FIG. 2 is a refrigerant circuit diagram of a refrigerant cycle device including the rotary compressor of FIG. 1 .
  • FIG. 1 shows a longitudinal side view of a rotary compressor 10 as one embodiment of a refrigerant compressor of the present invention.
  • the rotary compressor includes, in a sealed container 12 , an electromotive element 14 as a driving element and a rotary compressor mechanism part 18 as a compression element driven by this electromotive element 14 .
  • the rotary compressor 10 of the present embodiment is an inner high pressure type rotary compressor in which the rotary compressor mechanism part 18 is constituted of first and second rotary compression elements 32 , 34 , and a refrigerant compressed by the first rotary compression element 32 is sucked into the second rotary compression element 34 to compress the refrigerant. After the refrigerant is discharged into the sealed container 12 , it is discharged from the sealed container 12 .
  • the sealed container 12 is constituted of a container main body 12 A having a longitudinally long cylindrical shape, and a substantially bowl-like end cap (lid member) 12 B which closes an upper-end opening of this container main body 12 A, the rotary compressor mechanism part 18 is contained in a lower part of the container main body 12 A, and the electromotive element 14 is disposed in an upper part of the container main body 12 A.
  • an oil reservoir 80 is constituted in a bottom part of the container main body 12 A.
  • a circular attachment hole 12 D is formed in the top of the end cap 12 B, and a terminal (wiring line is omitted) 20 for supplying power to the electromotive element 14 is attached to this attachment hole 12 D.
  • the electromotive element 14 is constituted of a stator 22 annularly fixed by welding along an inner peripheral surface of the sealed container 12 in an upper space of the container, and a rotor 24 inserted in the container and disposed at a slight interval from an inner surface of this stator 22 .
  • This rotor 24 is fixed to a rotation shaft 16 extending through the center of the container in a vertical direction.
  • the stator 22 has a laminate member 26 constituted by laminating donut-like electromagnetic steel plates, and a stator coil 28 wound around a tooth part of this laminate member 26 by a series (concentrated winding) system.
  • the rotor 24 is also formed of a laminate member 30 of the electromagnetic steel plates in the same manner as in the stator 22 .
  • the rotary compressor mechanism part 18 is divided by an intermediate partition plate 36 into the second rotary compression element 34 constituting a second stage on the side of the electromotive element 14 in the sealed container 12 , and the first rotary compression element 32 constituting a first stage disposed opposite to the electromotive element 14 .
  • the second rotary compression element 34 and the first rotary compression element 32 are constituted of: upper and lower cylinders 38 and 40 disposed on and under the intermediate partition plate 36 and constituting the second and first rotary compression elements 34 , 32 ; and rollers 46 , 48 fitted into upper and lower eccentric portions 42 , 44 formed on the rotation shaft 16 of the electromotive element 14 to rotate eccentrically in the cylinders 38 , 40 , respectively.
  • the elements are also constituted of: a vane (not shown) which abuts on the rollers 46 , 48 to define the cylinders 38 , 40 on a low-pressure chamber side and a high-pressure chamber side; a lower support member 56 which closes one (lower) opening of the lower cylinder 40 , the lower support member constituting a support member having a bearing 56 A of the rotation shaft 16 ; and an upper support member 54 which closes an upper opening of the upper cylinder 38 , the upper support member having a bearing 54 A of the rotation shaft 16 .
  • the upper and lower eccentric portions 42 , 44 disposed on the rotation shaft 16 have a phase difference of 180 degrees.
  • the upper support member 54 and the lower support member 56 are provided with: suction passages 58 , 60 which communicate with inner parts of the upper and lower cylinders 38 , 40 by suction ports 160 , 161 ; a discharge sound absorbing chamber 62 formed by depressing the surface of the upper support member 54 on the side (upper side) opposite to the upper cylinder 38 , and closing this depressed concave portion with an upper cover 63 ; and a discharge sound absorbing chamber 64 formed by depressing the surface of the lower support member 56 on the side (lower side) opposite to the lower cylinder 40 , and closing this depressed concave portion with a lower cover 68 .
  • the discharge sound absorbing chamber 62 is closed with the upper cover 63
  • the discharge sound absorbing chamber 64 is closed with the lower cover 68 .
  • the bearing 54 A is raised from the center of the upper support member 54
  • the bearing 56 A is similarly extended through the center of the lower support member 56 .
  • the lower cover 68 is constituted of a donut-like circular steel plate, four peripheral portions of the cover are fixed to the lower support member 56 from below by lower bolts, and the lower cover closes an opening in the undersurface of the discharge sound absorbing chamber 64 which communicates the inner part of the lower cylinder 40 of the first rotary compression element 32 by a discharge port. A distant end of each bolt engages with the upper support member 54 .
  • a communication path (not shown) is formed so that the discharge sound absorbing chamber 62 communicates with the sealed container 12 , and the high-temperature high-pressure refrigerant gas compressed by the second rotary compression element 34 is discharged from the communication path into the sealed container 12 .
  • one end (lower end) of the rotation shaft 16 is attached to an oil pump 81 as oil supply means for pumping up the oil pooled in the oil reservoir 80 .
  • the oil pumped up by the oil pump is supplied to sliding portions and the like of the rotary compressor mechanism part 18 from an oil hole 88 formed in the center of the rotation shaft 16 in the vertical direction and oil supply holes 82 , 84 which communicate with this oil hole 88 and which are formed in a transverse direction (also formed in the upper and lower eccentric portions 42 , 44 ).
  • the refrigerant carbon dioxide which is a natural refrigerant eco-friendly to global environments is used as the refrigerant.
  • an existing oil is used such as a mineral oil, a polyalkylene glycol (PAG), an alkyl benzene oil, an ether oil or an ester oil.
  • sleeves 140 , 141 , 142 and 143 are fixed by welding in positions corresponding to the suction passages 58 , 60 of the upper support member 54 and the lower support member 56 and positions above the discharge sound absorbing chamber 64 and the electromotive element 14 , respectively.
  • the sleeve 140 is vertically adjacent to the lower sleeve 141 , and the sleeve 142 is disposed substantially along a diagonal line of the sleeve 141 .
  • a refrigerant introducing tube 92 for introducing the refrigerant gas in the upper cylinder 38 is inserted.
  • This end of the refrigerant introducing tube 92 communicates with the suction passage 58 .
  • This refrigerant introducing tube 92 passes above the sealed container 12 , and reaches the sleeve 142 .
  • the other end of the tube is inserted in the sleeve 142 to communicate with the discharge sound absorbing chamber 64 .
  • a refrigerant introducing tube 94 for introducing the refrigerant gas to the lower cylinder 40 is inserted. This end of the refrigerant introducing tube 94 communicates with the suction passage 60 .
  • a refrigerant discharge tube 96 is inserted, and one end of the refrigerant discharge tube 96 communicates with the inside of the sealed container 12 .
  • a sleeve 144 is fixed by welding to the side surface of the container main body 12 A above the electromotive element 14 , that is, substantially along a diagonal line of the sleeve 143 .
  • a servicing pipe 100 for introducing the refrigerant and the oil into the sealed container 12 as described later is inserted.
  • the rotary compressor 10 described above in detail constitutes a refrigerant cycle device 110 together with a radiator 150 , a capillary tube 152 as throttle means, and an evaporator 154 . They are successively connected to one another by pipes to constitute a refrigerant circuit of the refrigerant cycle device 110 .
  • the refrigerant and the oil are introduced into the rotary compressor 10 , as shown in FIG. 2 , after the rotary compressor 10 is connected to units (the radiator 150 , the capillary tube 152 and the evaporator 154 ) constituting the refrigerant cycle device 110 together with the rotary compressor 10 by the pipes, the refrigerant and the oil are directly introduced into the sealed container 12 from the servicing pipe 100 . Moreover, the oil introduced from this servicing pipe 100 flows downwards through gaps of the electromotive element 14 and the rotary compressor mechanism part 18 , and is pooled in the oil reservoir 80 formed in the bottom part.
  • the servicing pipe is formed beforehand in one of the pipes connecting the respective units of the refrigerant cycle device to one another.
  • the refrigerant and the oil have to be sucked from the servicing pipe while drawing a vacuum in the refrigerant circuit.
  • the oil also flows out of the refrigerant compressor, the amount of the operation introduced into the refrigerant compressor is reduced.
  • a capillary tube having a large passage resistance is used so that an evaporation temperature of the refrigerant in the evaporator is lowered.
  • throttle means such as an expansion valve having a throttle amount further enlarged is used. Therefore, the oil which has entered such a refrigerant circuit might remain in the throttle means to close the throttle means.
  • the servicing pipe 100 is formed in the container main body 12 A of the sealed container 12 as in the present invention, and the refrigerant and the oil are directly introduced into the sealed container 12 from the servicing pipe 100 , it is possible to disadvantage that the oil flows out of the rotary compressor 10 during the introduction of the oil.
  • the servicing pipe 100 is formed in the container main body 12 A above the electromotive element 14 so that the pipe does not interfere with the electromotive element 14 and the rotary compressor mechanism part 18 . Therefore, the refrigerant and the oil can easily be introduced into the sealed container 12 of the rotary compressor 10 .
  • a low-pressure refrigerant gas is sucked from the suction port 161 into the lower cylinder 40 on the low-pressure chamber side via the refrigerant introducing tube 94 and the suction passage 60 formed in the lower support member 56 , and compressed by an operation of the roller 48 and a vane (not shown) to achieve an intermediate pressure.
  • the gas is discharged into the discharge sound absorbing chamber 64 from the lower cylinder 40 on the high-pressure chamber side through a discharge port (not shown).
  • the intermediate-pressure refrigerant gas discharged into the discharge sound absorbing chamber 64 passes through the refrigerant introducing tube 92 connected to the discharge sound absorbing chamber 64 , and is sucked into the upper cylinder 38 on the low-pressure chamber side from the suction port 160 through the suction passage 58 formed in the upper support member 54 .
  • the intermediate-pressure refrigerant gas sucked into the upper cylinder 38 is compressed in the second stage by an operation of the roller 46 and a vane (not shown) to from a high-temperature high-pressure refrigerant gas.
  • the gas passes through a discharge port (not shown) from the upper cylinder 38 on the high-pressure chamber side, and is discharged into the discharge sound absorbing chamber 62 formed in the upper support member 54 .
  • the refrigerant fed into the discharge sound absorbing chamber 62 flows into the sealed container 12 through a communication path (not shown), passes through a gap between the inner peripheral surface of the container and the electromotive element 14 , moves to the upper part of the sealed container 12 , and is discharged from the rotary compressor 10 through the refrigerant discharge tube 96 connected to the upper part of the sealed container 12 .
  • the oil mixed with the refrigerant gas can be separated from the refrigerant gas while the gas passes through the gap between the inner peripheral surface of the container and the electromotive element 14 . In consequence, it is possible to minimize the amount of the oil discharged from the rotary compressor 10 .
  • the refrigerant and the oil can directly be introduced into the sealed container 12 of the rotary compressor 10 by the servicing pipe 100 of the present invention, it is possible to solve a disadvantage that the oil flows out of the rotary compressor 10 to adversely affect the circuit during the introduction of the oil. Since all the oil can securely be introduced into the sealed container 12 , the amount of the oil introduced into the rotary compressor 10 can be minimized.
  • the refrigerant compressor there has been described constitution inner high pressure type rotary compressor 10 including the first and second rotary compression elements 32 , 34 , but the refrigerant compressor rotor of the present invention is not limited to this example.
  • the present invention is applicable to any compressor as long as the compressor includes the driving element and the compression element in the sealed container, and compresses the refrigerant by the compression element.
  • the vertical compressor has been described in which the rotation shaft is vertically disposed, but needless to say, the present invention is applicable to a horizontal compressor in which the rotation shaft is horizontally disposed.
  • the servicing pipe 100 is disposed in the container main body 12 A above the electromotive element 14 , but the position of the servicing pipe 100 of the present invention is not limited to the position in the present embodiment, and the pipe may be disposed in any position as long as the driving element and the compression element are not interfered.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressor (AREA)
US11/526,574 2005-09-30 2006-09-26 Refrigerant compressor and refrigerant cycle device including the same Abandoned US20070074534A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005287332A JP2007100513A (ja) 2005-09-30 2005-09-30 冷媒圧縮機及びその冷媒圧縮機を備えた冷媒サイクル装置
JP287332/2005 2005-09-30

Publications (1)

Publication Number Publication Date
US20070074534A1 true US20070074534A1 (en) 2007-04-05

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US11/526,574 Abandoned US20070074534A1 (en) 2005-09-30 2006-09-26 Refrigerant compressor and refrigerant cycle device including the same

Country Status (6)

Country Link
US (1) US20070074534A1 (de)
EP (1) EP1770341A3 (de)
JP (1) JP2007100513A (de)
KR (1) KR20070037306A (de)
CN (1) CN1940295B (de)
TW (1) TW200720545A (de)

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US20100186439A1 (en) * 2008-05-23 2010-07-29 Panasonic Corporation Fluid machine and refrigeration cycle apparatus
US20100202909A1 (en) * 2008-05-23 2010-08-12 Panasonic Corporation Fluid machine and refrigeration cycle apparatus
US20120043054A1 (en) * 2009-05-13 2012-02-23 Mitsubishi Electric Corporation Air-conditioning apparatus
WO2014134336A1 (en) * 2013-02-28 2014-09-04 Bitzer Kühlmaschinenbau Gmbh Apparatus and method for oil equalization in multiple-compressor systems
US9689386B2 (en) 2012-07-31 2017-06-27 Bitzer Kuehlmaschinenbau Gmbh Method of active oil management for multiple scroll compressors
US9939179B2 (en) 2015-12-08 2018-04-10 Bitzer Kuehlmaschinenbau Gmbh Cascading oil distribution system
US10495089B2 (en) 2012-07-31 2019-12-03 Bitzer Kuehlmashinenbau GmbH Oil equalization configuration for multiple compressor systems containing three or more compressors
US10634137B2 (en) 2012-07-31 2020-04-28 Bitzer Kuehlmaschinenbau Gmbh Suction header arrangement for oil management in multiple-compressor systems
US10760831B2 (en) 2016-01-22 2020-09-01 Bitzer Kuehlmaschinenbau Gmbh Oil distribution in multiple-compressor systems utilizing variable speed

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Publication number Priority date Publication date Assignee Title
US9383123B2 (en) * 2011-05-10 2016-07-05 Panasonic Intellectual Property Management Co., Ltd. Refrigeration cycle device capable of efficiently varying capacity providing a first and a second compressing mechanism disposed in a hermetic container
JP6234324B2 (ja) * 2013-12-10 2017-11-22 三菱電機株式会社 圧縮機
KR102420854B1 (ko) 2021-04-12 2022-07-15 한국도로공사 이동형 재난예방 서비스 제공 시스템 및 방법

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EP1770341A2 (de) 2007-04-04
JP2007100513A (ja) 2007-04-19

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