WO2015087374A1 - スクロール圧縮機 - Google Patents
スクロール圧縮機 Download PDFInfo
- Publication number
- WO2015087374A1 WO2015087374A1 PCT/JP2013/082908 JP2013082908W WO2015087374A1 WO 2015087374 A1 WO2015087374 A1 WO 2015087374A1 JP 2013082908 W JP2013082908 W JP 2013082908W WO 2015087374 A1 WO2015087374 A1 WO 2015087374A1
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- WO
- WIPO (PCT)
- Prior art keywords
- oldham
- scroll
- ring
- pair
- scroll compressor
- 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.)
- Ceased
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Classifications
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- 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
- F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
- F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
- F04C29/0057—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions for eccentric movement
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- 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
- F01C17/00—Arrangements for drive of co-operating members, e.g. for rotary piston and casing
- F01C17/06—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements
- F01C17/066—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements with an intermediate piece sliding along perpendicular axes, e.g. Oldham coupling
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- 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
- F04C18/0215—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 where only one member is moving
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- 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
- F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
- F04C18/0253—Details concerning the base
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- 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
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- 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
- F04C29/0021—Systems for the equilibration of forces acting on the pump
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- 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
- F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
- F04C29/0085—Prime movers
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- 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
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- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
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- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/025—Motor control arrangements
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- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/027—Condenser control arrangements
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- 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
- F04C2240/50—Bearings
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- 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
- F04C2240/807—Balance weight, counterweight
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- 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
- F04C29/025—Lubrication; Lubricant separation using a lubricant pump
Definitions
- the present invention relates to a scroll compressor of an air conditioner or a refrigerating apparatus, for example.
- a swing scroll provided with a spiral on one surface of a base plate, a frame for supporting the swing scroll in the axial direction, a pair of Oldham key grooves formed on the swing scroll, and these Some have a pair of Oldham key grooves formed on the frame so as to be orthogonal to the grooves, and an Oldham ring disposed between the swing scroll and the frame (see, for example, Patent Document 1).
- a pair of Oldham keys and projections are formed on both sides of the Oldham ring so as to be slidably fitted into the Oldham key groove of the swing scroll or the frame.
- the Oldham ring, the orbiting scroll, and the frame slide during the operation of the scroll compressor, but the contact area is reduced by this projection (projection) to reduce friction during sliding. .
- the present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a scroll compressor capable of preventing generation of Oldham key cohesive wear in an Oldham key groove.
- a scroll compressor is configured to support a fixed scroll, a swing scroll that is combined with the fixed scroll to form a compression chamber, and has a pair of first Oldham key grooves on one surface, and the swing scroll.
- a frame having a pair of second Oldham key grooves, a pair of first Oldham keys fitted to the first Oldham key groove slidably on one surface, and a second Oldham key groove slidable on the other surface
- An Oldham ring that has a pair of second Oldham keys to be fitted and suppresses the rotation of the orbiting scroll, and the Oldham ring has at least a pair of protrusions on the other surface, and the protrusions When the Oldham ring is tilted by a single vibration, before the first Oldham key comes into contact with two places of the first Oldham key groove, A height that contacts the.
- the Oldham key since the protrusion comes into contact with one surface of the orbiting scroll before the Oldham key contacts at two locations within the Oldham key groove, the Oldham key contacts at two locations within the Oldham key groove. This prevents the occurrence of adhesive wear.
- FIG. 1 is a longitudinal sectional view showing a cross-sectional configuration example of a scroll compressor 100 according to an embodiment of the present invention
- FIG. 2 is a view of an orbiting scroll 2, an Oldham ring 6 and a frame 20 according to an embodiment of the present invention
- FIG. 3 is an exploded view (viewpoint from the X-axis direction), and FIG.
- the scroll compressor 100 is one of components of a refrigeration cycle used in various industrial machines such as a refrigerator, a freezer, a vending machine, an air conditioner, a refrigeration apparatus, and a water heater. .
- the scroll compressor 100 sucks the refrigerant circulating in the refrigeration cycle, compresses it, and discharges it as a high-temperature and high-pressure state.
- the scroll compressor 100 includes a fixed scroll 1 and a swing scroll that swings with respect to the fixed scroll 1 in an airtight container 24 including a center shell 8, an upper shell 22, and a lower shell 23. 2 is combined with the compression mechanism.
- the sealed container 24 is provided with a rotation drive means including the main shaft 9, the stator 11, the rotor 12, and the like, and the compression mechanism is disposed on the upper side and the rotation drive means is disposed on the lower side in the sealed container 24, respectively. Has been.
- the sealed container 24 is configured by providing an upper shell 22 at the upper part of the center shell 8 and a lower shell 23 at the lower part of the center shell 8.
- the lower shell 23 is an oil sump for storing lubricating oil.
- the center shell 8 is connected to a suction pipe 15 for sucking refrigerant gas.
- the upper shell 22 is connected to a discharge pipe 17 for discharging refrigerant gas.
- the inside of the center shell 8 is a low pressure chamber 18, and the inside of the upper shell 22 is a high pressure chamber 19.
- the fixed scroll 1 is composed of a fixed scroll base plate 1b and a fixed scroll spiral 1a which is a spiral projection standing on one surface (the lower side in FIG. 1) of the fixed scroll base plate 1b.
- the orbiting scroll 2 is erected on an orbiting scroll base plate 2b and one surface (the upper side in FIG. 1) of the orbiting scroll base plate 2b, and has a spiral shape substantially the same as the fixed scroll spiral 1a.
- a swing scroll spiral 2a which is a protrusion.
- the other surface of the swing scroll base plate 2b acts as the swing scroll thrust bearing surface 2c.
- the fixed scroll 1 is fixed to the frame 20 by bolts or the like not shown.
- the orbiting scroll 2 is configured such that a thrust bearing load generated during operation of the compressor is supported by the frame 20 via the orbiting scroll thrust bearing surface 2c.
- the frame 20 does not have sufficient hardness with respect to the thrust bearing load, as shown in FIG. 1, there is sufficient resistance against the thrust bearing load between the swing scroll thrust bearing surface 2c and the frame 20.
- the thrust plate 3 made of a material having hardness may be inserted.
- the fixed scroll 1 and the orbiting scroll 2 are mounted in an airtight container 24 by combining the fixed scroll swirl 1a and the orbiting scroll swirl 2a with each other. In a state where the fixed scroll 1 and the swing scroll 2 are combined, the winding directions of the fixed scroll spiral 1a and the swing scroll spiral 2a are opposite to each other.
- a compression chamber 25 whose volume changes relatively is formed between the fixed scroll spiral 1a and the swing scroll spiral 2a.
- the fixed scroll 1 and the orbiting scroll 2 are provided with a seal 26 on the front end surface of the fixed scroll swirl 1a in order to reduce refrigerant leakage from the front end surfaces of the fixed scroll swirl 1a and the orbiting scroll swirl 2a.
- a seal 27 is disposed on the tip surface of the spiral 2a.
- a discharge port 16 is formed at the center of the fixed scroll base plate 1b of the fixed scroll 1 to discharge the compressed and high pressure refrigerant gas.
- the compressed refrigerant gas having a high pressure is discharged into a high-pressure chamber 19 provided in the upper part of the fixed scroll 1.
- the refrigerant gas discharged to the high pressure chamber 19 is discharged to the refrigeration cycle via the discharge pipe 17.
- the discharge port 16 is provided with a discharge valve 28 for preventing the refrigerant from flowing backward from the high pressure chamber 19 to the discharge port 16 side.
- the orbiting scroll 2 revolves without revolving with respect to the fixed scroll 1 by an Oldham ring 6 that revolves while preventing its revolving motion.
- a hollow cylindrical boss 2d is formed at a substantially central portion of the surface of the swing scroll 2 opposite to the surface on which the swing scroll spiral 2a is formed.
- An eccentric shaft portion 9a provided at the upper end of the main shaft 9 is inserted into the boss portion 2d.
- a rocking scroll base plate back surface 2e is formed between the boss portion 2d and the rocking scroll thrust bearing surface 2c on the same surface.
- a pair of first Oldham key grooves 4 in the front-rear direction is formed on the surface of the orbiting scroll 2 opposite to the surface on which the orbiting scroll spiral 2 a is formed.
- a pair of left and right (X-axis direction) second Oldham key grooves 5 are respectively formed on the Oldham ring seating surface 20a.
- the Oldham ring 6 is disposed between the orbiting scroll 2 in which the first Oldham key groove 4 is formed and the frame 20 in which the second Oldham key groove 5 is formed.
- a second Oldham key 6ac having a quadrangular prism shape slidably fitted in the second Oldham key groove 5 of the frame 20 is provided on the upper surface (FIG. 2).
- quadrangular prism-shaped first Oldham keys 6ab that are slidably fitted in the first Oldham key grooves 4 of the orbiting scroll 2 are formed.
- the front and rear (Y axis direction) first Oldham key 6ab and the left and right (X axis direction) second Oldham key 6ac are the first Oldham key groove 4 of the front and rear (Y axis direction) swing scroll 2 and the left and right (X axis direction).
- the second Oldham key groove 5 of the frame 20 is slidably fitted.
- the first Oldham key 6ab and the second Oldham key 6ac are respectively formed in the front and rear (Y axis direction) first Oldham key groove 4 and the left and right (X axis direction) second Oldham key groove 5 filled with lubricating oil.
- the rotational force of the rotational drive means is transmitted to the revolving orbiting scroll 2 while sliding back and forth (Y-axis direction) or right and left (X-axis direction).
- the Oldham ring 6 makes a single vibration in the left and right direction (X-axis direction) with respect to the frame 20
- the orbiting scroll 2 makes a single vibration in the front and rear direction (Y-axis direction) with respect to the Oldham ring 6.
- the rotation driving means includes a main shaft 9 that is a rotating shaft, a rotor 12 fixed to the main shaft 9, a stator 11 fixed to the center shell 8, and the like.
- the rotor 12 is shrink-fitted and fixed to the main shaft 9 and is driven to rotate when the energization of the stator 11 is started to rotate the main shaft 9. That is, the stator 11 and the rotor 12 constitute an electric rotating machine.
- the rotor 12 is disposed below the first balance weight 13 fixed to the main shaft 9 together with the stator 11 that is shrink-fitted and fixed to the center shell 8. Note that power is supplied to the stator 11 via a power supply terminal 10 provided in the center shell 8.
- the main shaft 9 rotates with the rotation of the rotor 12 and revolves the orbiting scroll 2.
- the upper portion of the main shaft 9 (in the vicinity of the eccentric shaft portion 9a) is supported by a main bearing 21 provided on the frame 20.
- the lower portion of the main shaft 9 is rotatably supported by the auxiliary bearing 30.
- the sub-bearing 30 is press-fitted and fixed in a bearing housing portion formed at the center of a sub-frame 29 provided at the lower part of the sealed container 24.
- the subframe 29 is provided with a positive displacement oil pump 32.
- the lubricating oil sucked by the oil pump 32 is sent to each sliding portion through an oil supply hole 33 formed inside the main shaft 9.
- a first balance weight 13 is provided on the upper portion of the main shaft 9 in order to cancel an unbalance caused by the swing scroll 2 being mounted on the eccentric shaft portion 9a and swinging.
- a second balance weight 14 is provided below the rotor 12 in order to cancel out an imbalance caused by the swing scroll 2 being mounted on the eccentric shaft portion 9a and swinging.
- the first balance weight 13 is fixed to the upper part of the main shaft 9 by shrink fitting, and the second balance weight 14 is fixed to the lower part of the rotor 12 integrally with the rotor 12.
- the protrusion 7 of the Oldham ring 6 will be described later.
- the first balance weight 13 fixed to the upper part of the main shaft 9 and the second balance weight 14 fixed to the lower part of the rotor 12 are used for the eccentric revolving motion of the orbiting scroll 2. Static and dynamic balance is maintained.
- the swinging scroll 2 that is eccentrically supported on the upper portion of the main shaft 9 and whose rotation is suppressed by the Oldham ring 6 is swung to start a revolving motion, and the refrigerant is compressed by a known compression principle.
- the refrigerant gas flows into the compression chamber 25 through the frame refrigerant suction port of the frame 20, and the suction process is started. Further, the remaining part of the refrigerant gas passes through the notch (not shown) of the steel plate of the stator 11 to cool the electric rotary machine and the lubricating oil.
- the compression chamber 25 moves to the center of the orbiting scroll 2 by the revolving motion of the orbiting scroll 2, and the volume is further reduced. Through this process, the refrigerant gas sucked into the compression chamber 25 is compressed.
- the compressed refrigerant passes through the discharge port 16 of the fixed scroll 1, pushes the discharge valve 28 open, and flows into the high-pressure chamber 19. Then, it is discharged from the sealed container 24 through the discharge pipe 17.
- the thrust bearing load generated by the pressure of the refrigerant gas in the compression chamber 25 is received by the frame 20 that supports the orbiting scroll thrust bearing surface 2c. Further, the main bearing 21 and the auxiliary bearing 30 receive the centrifugal force and the refrigerant gas load generated in the first balance weight 13 and the second balance weight 14 as the main shaft 9 rotates. Note that the low-pressure refrigerant gas in the low-pressure chamber 18 and the high-pressure refrigerant gas in the high-pressure chamber 19 are partitioned by the fixed scroll 1 and the frame 20 and are kept airtight. When the energization of the stator 11 is stopped, the scroll compressor 100 stops operation.
- FIG. 4A is a perspective view of the Oldham ring 6 of the scroll compressor 100 according to the embodiment of the present invention
- FIG. 4B is a protrusion formed on the Oldham ring 6 of the scroll compressor 100 according to the embodiment of the present invention
- FIG. 5A is a top view of the Oldham ring 6 of the scroll compressor 100 according to the embodiment of the present invention
- FIG. 5B is the upper view of the Oldham ring 6 of the scroll compressor 100 according to the embodiment of the present invention. It is a side view.
- FIGS. 4a and 4b are collectively referred to as FIG. 4
- FIGS. 5a and 5b are collectively referred to as FIG.
- the Oldham ring 6 includes a ring portion 6b, a first Oldham key 6ab, a second Oldham key 6ac, and a protrusion 7.
- the first Oldham key 6ab and the protrusion 7 are provided on one surface of the ring portion 6b.
- the second Oldham key 6ac is formed on the other surface.
- the first Oldham key 6ab and the second Oldham key 6ac formed on the ring portion 6b of the Oldham ring 6 are paired with a pair of rocking scroll base plates 2b of the rocking scroll 2.
- the first Oldham key groove 4 and a pair of second Oldham key grooves 5 formed in the frame 20 so as to be orthogonal to the first Oldham key groove 4 are respectively fitted so as to slide.
- the projecting portion 7 of the Oldham ring 6 is hemispherical and integrally formed with the Oldham ring 6, and within the range of the ring portion 6b on the back side of the second Oldham key 6ac as shown in FIG. 5 (horizontal line portion in FIG. 5a), and Oldham Two are formed at symmetrical positions from the center of the ring 6.
- the width between the projection 7 of the Oldham ring 6 and the back surface 2e of the orbiting scroll base plate 2e is set to a width that can prevent adhesion wear of the first Oldham key 6ab in the first Oldham key groove 4 of the orbiting scroll 2. ing.
- FIG. 6 is a first schematic diagram showing a state in which the Oldham ring 6 of the scroll compressor 100 according to the embodiment of the present invention vibrates
- FIG. 7 shows the scroll compressor 100 according to the embodiment of the present invention
- FIG. 8 is a first schematic view showing the Oldham ring 60 of a conventional scroll compressor
- FIG. 9 is a conventional view.
- It is a 2nd schematic diagram which shows a mode that Oldham ring 60 of the scroll compressor of this is carrying out the simple vibration.
- simple vibration of the Oldham ring 6 during operation of the scroll compressor will be described in detail with reference to FIGS.
- the Oldham rings 6 and 60 start simple vibration in the X-axis direction with the operation of the scroll compressor.
- the space 31 in which the Oldham rings 6 and 60 simply vibrate is formed by the orbiting scroll base plate back surface 2e, the thrust plate 3, and the frame 20, and is indicated by the hatched portion in FIGS. Also, the space 31 is filled with lubricating oil by being supplied with lubricating oil through the oil supply hole 33.
- the Oldham ring 6 is formed with the projection 7 as in the embodiment shown in FIG. 7, the first Oldham key 6ab has two locations in the first Oldham key groove 4 (points A and B in FIG. 9). ), The protrusion 7 comes into contact with the rocking scroll base plate back surface 2e. Therefore, it is possible to prevent the first Oldham key 6ab from coming into contact at two locations in the first Oldham key groove 4 and to prevent the occurrence of adhesion wear and seizure.
- the protrusion 7 has a height at which the first Oldham key 6ab contacts the back surface 2e of the orbiting scroll base plate 2e before contacting the first Oldham key 6ab at two locations (points A and B in FIG. 9). At least necessary. However, if the protruding portion 7 is at a height that contacts the rocking scroll base plate back surface 2e when the Oldham ring 6 is not tilted, the Oldham ring 6 is sandwiched between the rocking scroll base plate 2b and the frame 20. Since it cannot move, it needs to be less than that.
- the position where the protrusion 7 is provided is preferably as far as possible from the ring portion 6b of the Oldham ring 6 (a position far from the center of the Oldham ring 6). Even if this is the same height, the protrusion 7 can be made lower because the inclination can be suppressed by providing it on the end side. Further, the tolerance width of the dimensions (for example, the thickness of the thrust plate 3 and the height of the ring portion 6b of the Oldham ring 6) related to the gap between the upper end of the protruding portion 7 and the swing scroll base plate back surface 2e can be increased. Accuracy can be relaxed.
- the two protrusions 7 of the Oldham ring 6 are provided within the range of the ring portion 6b on the back side of the second Oldham key 6ac and symmetrically from the center of the Oldham ring 6.
- the inertia force of the Oldham ring 6 increases during the high speed operation of the scroll compressor 100 and the Oldham ring 6 is tilted, so that the first Oldham key 6ab in the first Oldham key groove 4 of the orbiting scroll 2 is condensed. Wear and seizure can be prevented.
- the protrusion 7 can be made small (lower) by disposing the protrusion 7 at a position far from the center of the Oldham ring 6 with respect to the direction in which the Oldham ring 6 vibrates (X-axis direction), the Oldham ring 6
- the volume decrease of the space 31 in which the vibration of the Oldham ring 6 can be suppressed (the volume of the Oldham ring 6 occupying the space 31), and the increase in oil stirring loss caused by the simple vibration of the Oldham ring 6 can be suppressed.
- the gap between the upper end of the protrusion 7 and the swing scroll base plate back surface 2e can be increased, dimensions related to the gap between the upper end of the projection 7 and the swing scroll base plate back surface 2e (for example, the thickness of the thrust plate 3, the Oldham)
- the tolerance width of the ring portion 6b of the ring 6 can be increased, and the dimensional accuracy can be relaxed.
- the protrusion 7 has a hemispherical shape, the upper end of the protrusion 7 and the orbiting scroll base plate when the first Oldham key 6ab is prevented from being worn in the first Oldham key groove 4 of the orbiting scroll 2 are prevented.
- the sliding loss caused by the contact with the back surface 2e can be reduced.
- the protrusion 7 has a hemispherical shape, but the contact surface with the flat orbiting scroll base plate back surface 2e has a spherical shape to reduce sliding loss, and at least Other shapes may be used as long as the contact surface (tip portion) is spherical.
- the protrusion 7 of the Oldham ring 6 is integrally formed with the Oldham ring 6 has been described as an example, if the above effect is obtained, the Oldham ring 6 and the protrusion 7 are formed as separate members.
- the projecting portion 7 of the Oldham ring 6 may be fixedly attached to the Oldham ring 6 by using fastening means such as bolt fastening or press-fit fixing.
- the projection 7 of the Oldham ring 6 may be coated with a material such as a resin that reduces sliding loss.
- the two protrusions 7 of the Oldham ring 6 are provided at positions that are symmetrical from the center of the Oldham ring 6, they do not have to be completely symmetrical, and in addition to the two that are also symmetrical in number. More may be provided.
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Abstract
Description
実施の形態.
図1は、本発明の実施の形態に係るスクロール圧縮機100の断面構成例を示す縦断面図、図2は、本発明の実施の形態に係る揺動スクロール2及びオルダムリング6及びフレーム20の分解図(X軸方向からの視点)、図3は、本発明の実施の形態に係る揺動スクロール2及びオルダムリング6及びフレーム20の分解図(Y軸方向からの視点)である。
以下、図1~図3に基づいてスクロール圧縮機100の構成及び動作について説明する。
本実施の形態に係るスクロール圧縮機100は、例えば冷蔵庫や冷凍庫、自動販売機、空気調和装置、冷凍装置、給湯器等の各種産業機械に用いられる冷凍サイクルの構成要素の一つとなるものである。
また、揺動スクロール2は、圧縮機運転中に生じるスラスト軸受荷重が揺動スクロールスラスト軸受面2cを介してフレーム20で支持されるようになっている。なお、フレーム20がスラスト軸受荷重に対して十分な硬度を持たない場合は、図1に示すように、揺動スクロールスラスト軸受面2cとフレーム20との間に、スラスト軸受荷重に対して十分な硬度を持つ素材から成るスラストプレート3を挿入する構造としてもよい。
なお、オルダムリング6の突起部7については後述する。
電源端子10に通電すると、固定子11の電線部に電流が流れ、磁界が発生する。この磁界は、回転子12を回転させるように働く。つまり、固定子11及び回転子12にトルクが発生し、回転子12が回転する。回転子12が回転すると、それに伴い主軸9が回転駆動される。主軸9が回転駆動されると、オルダムリング6により自転を抑制された揺動スクロール2は、公転運動を行う。
図4に示すように、オルダムリング6は、リング部6b、第1オルダムキー6ab、第2オルダムキー6ac、及び突起部7により構成され、リング部6bの一方の面に第1オルダムキー6ab及び突起部7が、他方の面に第2オルダムキー6acがそれぞれ形成されている。
以下、図6~図9に基づいてスクロール圧縮機の運転時におけるオルダムリング6の単振動について詳細に説明する。
図6及び図8に示すように、スクロール圧縮機の運転に伴い、オルダムリング6、60はX軸方向に単振動を始める。なお、オルダムリング6、60が単振動する空間31は、揺動スクロール台板背面2e、スラストプレート3、及びフレーム20により形成され、図6~図9の斜線部で示される。また、その空間31は、油供給穴33により潤滑油が供給され、潤滑油で満たされている。
また、突起部7を小さく(低く)することで、オルダムリング6が単振動する空間31の容積の減少(空間31内を占めるオルダムリング6の体積)を抑えることができるため、オルダムリング6の単振動により生じる油攪拌損失の増加を抑制することができる。
Claims (9)
- 固定スクロールと、
前記固定スクロールと組み合わされて圧縮室を形成し、一方の面に一対の第1オルダムキー溝を有する揺動スクロールと、
前記揺動スクロールを支持し、一対の第2オルダムキー溝を有するフレームと、
一方の面に第1オルダムキー溝に摺動可能に嵌合する一対の第1オルダムキーを有し、他方の面に第2オルダムキー溝に摺動可能に嵌合する一対の第2オルダムキーを有し、前記揺動スクロールの自転を抑制するオルダムリングと、を備え、
前記オルダムリングは、前記他方の面に少なくとも一対の突起部を有し、
前記突起部は、前記オルダムリングが単振動して傾いた際に、前記第1オルダムキーが前記第1オルダムキー溝の2箇所で接触する前に、前記揺動スクロールの一方の面に接触する高さである
ことを特徴とするスクロール圧縮機。 - 前記一対の突起部は、前記オルダムリングの、前記一対の第2オルダムキーの裏側の範囲内にそれぞれ形成されている
ことを特徴とする請求項1に記載のスクロール圧縮機。 - 前記一対の突起部は、前記オルダムリングの中心から対称となる位置にそれぞれ形成されている
ことを特徴とする請求項1または2に記載のスクロール圧縮機。 - 前記突起部は、前記オルダムリングの端側に形成されている
ことを特徴とする請求項1~3のいずれか一項に記載のスクロール圧縮機。 - 前記突起部は、前記揺動スクロールの一方の面との接触面が球形状である
ことを特徴とする請求項1~4のいずれか一項に記載のスクロール圧縮機。 - 前記第1オルダムキーは四角柱形状である
ことを特徴とする請求項1~5のいずれか一項に記載のスクロール圧縮機。 - 前記突起部は、樹脂でコーティングされている
ことを特徴とする請求項1~6のいずれか一項に記載のスクロール圧縮機。 - 前記突起部は前記オルダムリングと一体形成されている
ことを特徴とする請求項1~7のいずれか一項に記載のスクロール圧縮機。 - 前記突起部は前記オルダムリングと別部材で形成されている
ことを特徴とする請求項1~7のいずれか一項に記載のスクロール圧縮機。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2013/082908 WO2015087374A1 (ja) | 2013-12-09 | 2013-12-09 | スクロール圧縮機 |
| EP13899267.2A EP3081814B1 (en) | 2013-12-09 | 2013-12-09 | Scroll compressor |
| US15/026,996 US9797401B2 (en) | 2013-12-09 | 2013-12-09 | Scroll compressor |
| CN201380081497.8A CN105849410B (zh) | 2013-12-09 | 2013-12-09 | 涡旋压缩机 |
| JP2015552212A JP6033467B2 (ja) | 2013-12-09 | 2013-12-09 | スクロール圧縮機 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2013/082908 WO2015087374A1 (ja) | 2013-12-09 | 2013-12-09 | スクロール圧縮機 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015087374A1 true WO2015087374A1 (ja) | 2015-06-18 |
Family
ID=53370723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2013/082908 Ceased WO2015087374A1 (ja) | 2013-12-09 | 2013-12-09 | スクロール圧縮機 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9797401B2 (ja) |
| EP (1) | EP3081814B1 (ja) |
| JP (1) | JP6033467B2 (ja) |
| CN (1) | CN105849410B (ja) |
| WO (1) | WO2015087374A1 (ja) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10400770B2 (en) | 2016-02-17 | 2019-09-03 | Emerson Climate Technologies, Inc. | Compressor with Oldham assembly |
| US11136977B2 (en) | 2018-12-31 | 2021-10-05 | Emerson Climate Technologies, Inc. | Compressor having Oldham keys |
| CN112746955B (zh) * | 2019-10-31 | 2025-07-11 | 谷轮环境科技(苏州)有限公司 | 涡旋压缩机 |
| KR20230173267A (ko) * | 2022-06-16 | 2023-12-27 | 엘지전자 주식회사 | 스크롤 압축기 |
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- 2013-12-09 CN CN201380081497.8A patent/CN105849410B/zh not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3081814A1 (en) | 2016-10-19 |
| EP3081814B1 (en) | 2019-03-13 |
| CN105849410A (zh) | 2016-08-10 |
| CN105849410B (zh) | 2017-07-21 |
| US9797401B2 (en) | 2017-10-24 |
| US20160230764A1 (en) | 2016-08-11 |
| EP3081814A4 (en) | 2017-05-31 |
| JPWO2015087374A1 (ja) | 2017-03-16 |
| JP6033467B2 (ja) | 2016-11-30 |
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