EP1643130A1 - Hermetischer Verdichter mit Ansaugfilter - Google Patents

Hermetischer Verdichter mit Ansaugfilter Download PDF

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Publication number
EP1643130A1
EP1643130A1 EP05020757A EP05020757A EP1643130A1 EP 1643130 A1 EP1643130 A1 EP 1643130A1 EP 05020757 A EP05020757 A EP 05020757A EP 05020757 A EP05020757 A EP 05020757A EP 1643130 A1 EP1643130 A1 EP 1643130A1
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EP
European Patent Office
Prior art keywords
compression element
filter
refrigerant
sealed container
cylinder
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.)
Withdrawn
Application number
EP05020757A
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English (en)
French (fr)
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
Original Assignee
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
Publication of EP1643130A1 publication Critical patent/EP1643130A1/de
Withdrawn legal-status Critical Current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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
    • 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
    • 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
    • F04B39/16—Filtration; Moisture separation
    • 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
    • F04C18/3562—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 the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
    • F04C18/3564—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 the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
    • 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
    • F04C29/0092—Removing solid or liquid contaminants from the gas under pumping, e.g. by filtering or deposition; Purging; Scrubbing; Cleaning
    • 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
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods
    • 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
    • F04C23/001—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 of similar working principle

Definitions

  • the present invention relates to a compressor for compressing a refrigerant suitable for use in, for example, an air conditioning system, a water heater, a car air conditioner, a showcase, a freezer and refrigerator, or a refrigeration unit such as an automatic dispenser.
  • refrigerant gas is drawn into a low pressure chamber side of a cylinder from a refrigerant introduction pipe via a suction port of a first rotary compression element.
  • the refrigerant gas is then compressed by operations of a roller and a vane to become intermediate pressure.
  • the intermediate pressure refrigerant gas is discharged from a high pressure chamber side of the cylinder through a discharge port, a noise eliminating chamber, and a refrigerant introduction pipe provided outside a sealed container.
  • the intermediate pressure refrigerant gas is then drawn into the lower pressure chamber side of the cylinder through a suction port of a second rotary compression element, where it is subjected to a second stage compression by the operations of the roller and the vane to become high-temperature and high-pressure refrigerant gas.
  • the high-temperature and high-pressure refrigerant gas compressed by the second rotary compression element flows from the high pressure chamber side of the cylinder into the sealed container through the discharge port and the noise eliminating chamber. Then, the high-temperature and high-pressure refrigerant gas discharged into the sealed container is discharged from a refrigerant discharge pipe to the outside of the sealed container to be supplied to a refrigerating cycle, such as an air conditioning system, where the refrigerant gas radiates heat and is condensed to enter an evaporator, in which heat of the refrigerant is absorbed and the refrigerant gas is evaporated. Thereafter it is drawn again into the first rotary compression element through the refrigerant introduction pipe. This cycle is repeated.
  • a refrigerating cycle such as an air conditioning system
  • a rotary compressor 10X is well known, as shown in Figs. 6 and 7, which includes a filter 185 press fitted into an inlet side of a suction passage 59 for the refrigerant provided in a cylinder 39 constituting the rotary compression element, so as to prevent foreign material from flowing into a compression chamber not shown of the cylinder 39, and to avoid inconveniences, including wear or locking of sliding parts of the rotary compression element.
  • the filter 185 is installed over a tip end of a refrigerant introduction pipe 93 which is inserted into and connected to the refrigerant suction passage 59 provided in the cylinder 39, and then is press fitted into the inlet side of the suction passage 59, thereby removing foreign material which intends to be drawn into the compression chamber of the cylinder 39 together with the refrigerant gas.
  • This method of installation of the filter suffers from the problem that the filter cannot be often installed when the refrigerant suction passage cannot be provided in the cylinder constituting the compression element, or when a long refrigerant suction passage cannot be provided.
  • the invention has an object to provide a compressor which enables easy installation of a filter even when any refrigerant suction passage cannot be provided on a cylinder side of a compression element or even when any long suction passage cannot be provided.
  • a compressor which comprises, in a sealed container, a drive element, a compression element, a drive shaft for transferring a driving force of the drive element to the compression element to drive the compression element, and a bearing member for journaling the drive shaft.
  • Refrigerant gas introduced from an outside of the sealed container is drawn into the compression element via the bearing member, and then the refrigerant gas is compressed by the compression element to be discharged to the outside of the sealed container.
  • a filter is fitted into a recess provided at an outlet of a refrigerant passage of the bearing member, the refrigerant passage leading to a suction port of a cylinder constituting the compression element, and the filter is pressed against and stopped by the cylinder.
  • a compressor which comprises, in a sealed container, a drive element, a compression element, a drive shaft for transferring a driving force of the drive element to the compression element to drive the compression element, and a bearing member for journaling the drive shaft.
  • Refrigerant gas introduced from an outside of the sealed container is drawn into the compression element via a refrigerant introduction pipe, and then the refrigerant gas is compressed by the compression element to be discharged to the outside of the sealed container.
  • a plate-like filter is holded and fixed between the compression element and the refrigerant introduction pipe on an outlet side of the refrigerant introduction pipe.
  • the filter is fitted into the recess provided at the outlet of the refrigerant passage of the bearing member, which passage leads to the suction port of the cylinder constituting the compression element, and the filter is pressed against and stopped by the cylinder.
  • the filter can be easily installed on the compressor even when any suction passage cannot be provided on the cylinder side or even when any long suction passage cannot be provided. This can surely avoid the occurrence of inconveniences, including the wear or locking of sliding parts of the rotary compression element.
  • a compressor comprises, in a sealed container, a drive element, a compression element, a drive shaft for transferring a driving force of the drive element to the compression element to drive the compression element, and a bearing member for journaling the drive shaft.
  • Refrigerant gas introduced from an outside of the sealed container is drawn into the compression element via the bearing member, and then is compressed by the compression element to be discharged to the outside of the sealed container.
  • a filter installation portion is formed as a recess for surrounding and enclosing an outlet of a refrigerant passage of the bearing member leading to a suction port of a cylinder constituting the compression element.
  • a filter which includes a wire-mesh filtration part supported by a metallic doughnut-shaped support member is fitted into the filter installation portion, and then is pressed against and stopped by the cylinder.
  • a compressor comprises, in a sealed container, a drive element, a compression element, a drive shaft for transferring a driving force of the drive element to the compression element to drive the compression element, and a bearing member for journaling the drive shaft.
  • Refrigerant gas introduced from an outside of the sealed container is drawn into the compression element via a refrigerant introduction pipe, and then is compressed by the compression element to be discharged to the outside of the sealed container.
  • a plate-like filter which includes a wire mesh filtration part supported by a metallic doughnut-shaped support member is holded and fixed between the compression element and the refrigerant introduction pipe on an outlet side of the refrigerant introduction pipe.
  • Fig. 1 is a longitudinal sectional view showing a multistage (two-stage) compression type rotary compressor of an inside high-pressure type 10 which includes first and second rotary compression elements 32 and 34 according to the first embodiment.
  • Fig. 2 is a plain view of a filter of the embodiment, and
  • Fig. 3 is a sectional view of the filter of the embodiment.
  • the multistage (two-stage) compression type rotary compressor of the inside high-pressure type 10 is designed to compress a carbon dioxide (CO 2 ) which is to be used as a refrigerant for an air conditioning system.
  • the rotary compressor 10 comprises a cylindrical sealed container 12 made of a steel plate, a drive element 14 disposed at and accommodated in an upper side of an inner space of the sealed container 12, and a rotary compression mechanism 18 composed of the first rotary compression element 32 (first stage) and the second rotary compression element 34 (second stage) which are respectively disposed under the drive element 14 and driven by a rotary shaft 16 of the drive element 14.
  • the sealed container 12 has its bottom serving as an oil reservoir, and includes a container body 12A for accommodating therein the drive element 14 and the rotary compression mechanism 18, and an end cap (cover) 12B with a substantially bowl shape for closing an opening positioned at an upper part of the container body 12A.
  • a terminal 20 (wiring of which is omitted in description) for supplying power to the drive element 14 is attached to the center of the end cap 12B.
  • the drive element 14 includes a stator 22 which is annularly attached to the inner peripheral surface of the sealed container 12 in the upper space thereof, and a rotor 24 inserted into and installed inside the stator 22 with a slight clearance.
  • the rotary shaft 16 extending vertically through the center of the stator 22 is fixed to the rotor 24.
  • the stator 22 includes a laminated body 26 formed by laminating doughnut-shaped electromagnetic steel plates and a stator coil 28 which is wound around the teeth of the laminated body 26 by direct winding (concentrating winding).
  • the rotor 24 is formed by inserting a permanent magnet MG in a laminated body 30 made of electromagnetic steel plates like the stator 22.
  • both the first rotary compression element 32 and the second rotary compression element 34 comprise the intermediate partition plate 36, upper and lower cylinders 38, 40 disposed over and under the intermediate partition plate 36, upper and lower eccentric portions 42, 44 provided on the rotary shaft 16, upper and lower rollers 46, 48 which are eccentrically rotated inside the upper and lower cylinders 38, 40 while fitted into the upper and lower eccentric portions 42, 44 with a 180 ⁇ degree phase difference therebetween, upper and lower vanes (not shown) abutting against the upper and lower rollers 46, 48 and partitioning each of the upper and lower cylinders 38, 40 into a lower pressure chamber side and a high pressure chamber side, and an upper support member 54 and a lower support member 56 serving both as supporting means by closing an upper opening face of the upper cylinder 38 and the lower opening face of the lower cylinder 40, and as bearing means of the rotary shaft 16.
  • suction passages 58, 60 which communicate with the inside of the upper and lower cylinders 38 and 40 through suction ports 161, 162, and noise eliminating chambers 62, 64 which are recessed.
  • Filter installation portions 180, 182 are formed as recesses for surrounding and enclosing open ends of the suction passages 58 and 60, into which portions filters 184, 186 are inserted, respectively.
  • the filter 184 as used herein is a plate-like filter composed of a wire-mesh filtration part 184A supported by a metallic doughnut shaped frame 184B, as shown in, for example, Figs. 2 and 3 (filter 186 has the same structure).
  • the frame 184B of the filter 184 is pressed against and stopped by the upper surface of the upper cylinder 38, while a frame 186B of the filter 186 is pressed against and stopped by the lower surface of the lower cylinder 40 such that the filters 184, 186 are not disconnected from the filter installation portions 180, 182.
  • the filter 184 is held between the upper support member 54 and the upper cylinder 38, and the filter 186 is held between the lower support member 56 and the lower cylinder 40, so that the filters are prevented from dropping off.
  • the noise eliminating chambers 62, 64 of the upper support member 54 and the lower support member 56 have openings thereof opposite to the upper and lower cylinders 38, 40 closed with respective covers. That is, the noise eliminating chamber 62 is blocked by an upper cover 66, and the noise eliminating chamber 64 is blocked by a lower cover 68.
  • the upper cover 66 has its periphery fixed to the upper support member 54 from above by four main bolts 78. Two of the main bolts 78 have tip ends thereof screw-engaged with the upper cylinder, and the other two have tip ends thereof screw-engaged with the lower support member 56. Above the upper cover 66 is positioned the drive element 14.
  • the noise eliminating chamber 62 of the upper support member 54 and the interior of the sealed container 12 communicate with each other through a discharge hole 120 which is open towards the drive element 14 in the sealed container 12, penetrating the upper cover 66.
  • refrigerant gas compressed by the second rotary compression element 34 is discharged into the sealed container 12 through the discharge hole 120.
  • the lower cover 68 is made of a doughnut-shaped circular steel plate, and it is fixed to the lower support member 56 from below by screwing four main bolts 129 at four spots on the periphery thereof to block an opening disposed on the lower surface of the noise eliminating chamber 64.
  • the tip end of each main bolt 129 is screw-engaged with the upper support member 54.
  • Sleeves 141, 142, 143, and 144 are respectively fixed to the side surface of the container body 12A of the sealed container 12 by performing projection welding at open positions corresponding to the suction passages 58, 60 of the upper and lower support members 54, 56, the noise eliminating chamber 64, and the portion above the rotor 24 (portion directly above the drive element 14).
  • the sleeve 141 is vertically adjacent to the sleeve 142.
  • the sleeve 142 is positioned substantially opposite to the sleeve 143 with respect to the rotary shaft 16.
  • the sleeve 141 is displaced from the sleeve 144 by about 90 degrees with respect to the rotary shaft 16.
  • a refrigerant introduction pipe 92 is inserted into and connected to the sleeve 141 to communicate with the suction passage 58 of the upper support member 54.
  • the other end of the refrigerant introduction pipe 92 passes through the upper part of the sealed container 12, and is inserted into and connected to the sleeve 143 to communicate with the noise eliminating chamber 64 of the lower support member 56.
  • a refrigerant introduction pipe 94 is inserted into and connected to the sleeve 142 to communicate with the suction passage 60 of the lower support member 56.
  • a refrigerant discharge pipe not shown is inserted into and connected to the sleeve 144.
  • CO 2 carbon dioxide
  • PAG polyalkyleneglycol
  • the drive element 14 when a stator coil 28 of the drive element 14 is energized via the terminal 20 and the wiring not shown, the drive element 14 is operated to rotate the rotor 24. Once the rotor 24 is rotated, the upper and lower rollers 46, 48 engaged with the upper and lower eccentric portions 42, 44 which are integrally provided with the rotary shaft 16 are caused to rotate eccentrically in the upper and lower cylinders 38, 40, as described above.
  • a lower pressure (about 4 MPaG) refrigerant gas supplied via a refrigerant introduction pipe 94 is drawn into the low pressure chamber side of the lower cylinder 40 from a suction port 162 via the suction passage 60 provided in the lower support member 56.
  • the refrigerant gas is compressed by the operations of the roller 48 and the vane not shown of the first rotary compression element 32 to be changed into intermediate pressure (about 8MPaG). Consequently, the intermediate pressure refrigerant is discharged into the noise eliminating chamber 64 from the high pressure chamber side of the cylinder 40 via the discharge port not shown.
  • the filter 186 is disposed in the filter installation portion 182, the low pressure refrigerant gas introduced via the refrigerant introduction pipe 94 is drawn into the low pressure chamber side of the lower cylinder 40, and then filtered by the filter 186 to remove the foreign material. This can avoid the occurrence of inconveniences, including wear or locking of the sliding parts of the first rotary compression element 32.
  • the intermediate-pressure refrigerant discharged into the noise eliminating chamber 64 is drawn into the refrigerant introduction pipe 92, passes over the suction passage 58 of the upper support member 54 via the outside of the sealed container 12, and then is drawn into the low pressure chamber side of the upper cylinder 38 from the suction port 161. Also, at this time, the refrigerant is filtered by the filter 184, thereby removing the foreign material in the refrigerant drawn into the low pressure chamber side of the upper cylinder 38. This can avoid the occurrence of inconveniences, including the wear or locking of the sliding parts of the second rotary compression element 34. In addition, the refrigerant gas is cooled when it passes through the refrigerant introduction pipe 92 provided outside the sealed container 12.
  • the intermediate-pressure refrigerant gas drawn into the low pressure chamber side of the upper cylinder 38 is compressed by the operations of the roller 46 and the vane not shown of the second rotary compression element 34 into high-temperature and high-pressure (about 10 to 12 MPaG) refrigerant gas, which is then discharged from the high pressure chamber side of the cylinder 38 into the noise eliminating chamber 62 via the discharge port not shown.
  • the high-temperature and high-pressure refrigerant gas discharged into the noise eliminating chamber 62 is discharged from the discharge hole 120 of the upper cover 66 into an area inside the sealed container 12 under the drive element 14, and then passes through a clearance between the members to reach the upper side of the drive element 14, so that the refrigerant gas is discharged to the outside of the sealed container via the sleeve 144.
  • the rotary compressor 10 When the rotary compressor 10 is incorporated as, for example, a compressor for an air conditioner, the high-temperature and high-pressure refrigerant gas fed through the refrigerant discharge pipe connected to the sleeve 144 is introduced into a heat exchanger, so that the heat is radiated and the refrigerant gas is condensed.
  • the condensed low-temperature and high-pressure refrigerant liquid is subjected to reduced pressure using an expansion valve to flow into an evaporator, where it is evaporated, and then flows back into the compressor through the refrigerant introduction pipe 94. This cycle is repeated.
  • the latent heat caused by evaporating the refrigerant in the evaporator produces the cooling effect.
  • the plate-like filter 184 is holded and fixed between the first rotary compression element 32 and the refrigerant introduction pipe 92, and the plate-like filter 186 between the second rotary compression element 34 and the refrigerant introduction pipe 94.
  • Fig. 5 is an enlarged view of the principal part of the first rotary compression element 32.
  • the second rotary compression element 34 has the same construction as that of the first rotary compression element 32, and thus explanation of the second rotary compression element will also be given simultaneously below.
  • the lower support member 56 is provided with the suction passage 60 communicating with the interior of the lower cylinder 40 at the suction port 162, and an insertion portion 196 into which a copper pipe 192 is inserted as an extended pipe of the refrigerant introduction pipe 94 so as to cause the refrigerant introduction pipe 94 to communicate with the suction passage 60.
  • the upper support member 54 is provided with the suction passage 58 communicating with the interior of the upper cylinder 38 at the suction port 161, and an insertion portion 194 into which a copper pipe 190 is inserted as an extended pipe of the refrigerant introduction pipe 92 so as to cause the refrigerant introduction pipe 92 to communicate with the suction passage 58.
  • the refrigerant introduction pipes 92, 94 are welded and fixed to the copper pipes 190, 192, respectively, which are welded and fixed to the sleeves 141, 142, respectively.
  • a collar 197 is formed of an iron pipe.
  • a filter installation portion 198 formed of a step is provided between the tip end of each of the copper pipes 190 and 192 and the refrigerant introduction side of each of the suction passages 58 and 60.
  • the filter installation portion 198 when insertion portions 194, 196 are formed in the upper and lower support members 54, 56, is formed by making a lower hole with substantially the same diameter as that of the filters 184, 186, and then by making a slightly larger hole with substantially the same diameter as that of the copper pipes 190, 192. That is, the filter installation portion 198 is the step formed of a difference in the diameter between the lower hole and each of the holes for the upper and lower copper pipes 190, 192.
  • the filters 184, 186 are installed on the filter installation portions 198, the filters 184, 186 are fixed thereto by pressing the frame 184B, 186B against the copper pipes 190, 192 of the refrigerant introduction pipes 92, 94, respectively.
  • the insertion portions 194, 196 and the filter installation portion 198 are formed in the upper and lower support members 54, 56, the invention is not limited thereto.
  • the filter installation portions 198 in which the respective filters 184, 186 may be installed to be holded between the refrigerant introduction pipes 92 and 94.
  • the multistage compression type rotary compressor of the inside high-pressure type is exemplified as the compressor of the invention, the invention is not limited thereto.
  • the compressor of the invention may be useful as a multistage compression type rotary compressor of an inside intermediate-pressure type, a one-stage compression type rotary compressor, or a one-stage or multistage compression type rotary compressor of a scroll type or a reciprocating type.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP05020757A 2004-09-29 2005-09-23 Hermetischer Verdichter mit Ansaugfilter Withdrawn EP1643130A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004284269 2004-09-29
JP2004339043A JP2006125377A (ja) 2004-09-29 2004-11-24 圧縮機

Publications (1)

Publication Number Publication Date
EP1643130A1 true EP1643130A1 (de) 2006-04-05

Family

ID=35447415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05020757A Withdrawn EP1643130A1 (de) 2004-09-29 2005-09-23 Hermetischer Verdichter mit Ansaugfilter

Country Status (5)

Country Link
US (1) US20060073034A1 (de)
EP (1) EP1643130A1 (de)
JP (1) JP2006125377A (de)
KR (1) KR20060051709A (de)
TW (1) TW200615458A (de)

Cited By (1)

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CN103541902A (zh) * 2012-07-10 2014-01-29 广东美芝制冷设备有限公司 壳体低背压的旋转式压缩机
CN114576170B (zh) * 2022-03-10 2023-09-05 珠海凌达压缩机有限公司 一种用于压缩机的下法兰结构及具有其的压缩机

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011121320A3 (en) * 2010-03-30 2012-06-21 Edwards Limited Scroll compressor with an integrated inlet filter
US9297382B2 (en) 2010-03-30 2016-03-29 Edwards Limited Scroll compressor

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KR20060051709A (ko) 2006-05-19
TW200615458A (en) 2006-05-16
US20060073034A1 (en) 2006-04-06
JP2006125377A (ja) 2006-05-18

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