US20110262291A1 - Rotor Assembly for Rotary Compressor - Google Patents

Rotor Assembly for Rotary Compressor Download PDF

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Publication number
US20110262291A1
US20110262291A1 US12/990,115 US99011508A US2011262291A1 US 20110262291 A1 US20110262291 A1 US 20110262291A1 US 99011508 A US99011508 A US 99011508A US 2011262291 A1 US2011262291 A1 US 2011262291A1
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United States
Prior art keywords
rotor
compressor
sealed chamber
chamber
plate
Prior art date
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Abandoned
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US12/990,115
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English (en)
Inventor
Darryl Fleger
David Robert Gibbs
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Randell Tech Inc
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Randell Tech Inc
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 Randell Tech Inc filed Critical Randell Tech Inc
Priority to US12/990,115 priority Critical patent/US20110262291A1/en
Publication of US20110262291A1 publication Critical patent/US20110262291A1/en
Priority to US14/616,210 priority patent/US20150152867A1/en
Priority to US16/006,566 priority patent/US20180291898A1/en
Abandoned legal-status Critical Current

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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
    • F04C18/22—Rotary-piston pumps specially adapted for elastic fluids of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth equivalents than 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
    • 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
    • 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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/001—Radial sealings for working fluid
    • 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
    • F04C29/0064—Magnetic couplings
    • 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

Definitions

  • This invention relates to rotor assemblies for rotary compressor units especially but not exclusively units for small refrigeration units such are suitable for use in small refrigerators and automotive air conditioners. Such units must be compact, quiet, reliable and economical to manufacture and operate.
  • Compressor units for domestic refrigerators are commonly of the sealed unit type in which both the compressor and a motor permanently coupled to the compressor is located within an enclosure that is completely and permanently sealed except for refrigerant connections to the remainder of the refrigeration unit.
  • Such a unit has the disadvantages that failure of either the motor or the compressor requires both to be discarded, different sealed units are required for electrical supplies requiring different motors, even though the compressor is identical, and two devices, both of which generate unwanted heat, are thermally coupled within the same enclosure.
  • piston compressor which has been proposed, is the rotary piston compressor using a lobed rotor in a trochoidal chamber and having some resemblance to rotary piston engines such as the Wankel engine although the operating cycle is substantially different and the shaft is driven by an external power source rather than being driven by the rotary piston.
  • Such compressors are exemplified in U.S. Pat. Nos. 3,656,875 (Luck); 4,018,548 (Berkowitz); and 4,487,561 (Eiermann).
  • U.S. Pat. No. 5,310,325 discloses a rotary engine using a symmetrical lobed piston moving in a trochoidal chamber on an eccentric mounted on a rotary shaft and driven through a ring gear by a similarly eccentric planet gear rotated at the same rate as the eccentric, the gear ratio of the ring gear to the planet gear being equal to the number of lobes on the rotor, typically three.
  • the apices of the lobes trace trochoidal paths tangent to the trochoidal chamber wall thus simplifying sealing.
  • U.S. Pat. No. 6,520,754 discloses a compressor for a refrigeration unit having a three lobed rotor orbiting in a chamber defined within a sealed casing and using a magnetic coupling outside of the casing to rotate the rotor.
  • the present invention relates to a compressor having a rotor assembly within which a rotor is rotated on an eccentric shaft in a sealed chamber.
  • Two or more intake ports are provided that open into the sealed chamber and two or more exhaust ports are provided with one way valves, to permit compressed gas to exit the sealed chamber.
  • the geometry of the rotor and sealed chamber and eccentric drive are such that apices of the rotor remain in contact with a peripheral wall of the sealed chamber as the rotor rotates and apex seals are provided on the apices of the rotor to prevent leakage of the gas around the apices of the rotor.
  • the rotor is a multi-lobed rotor orbiting within a trochoidal chamber.
  • FIG. 1 is a front schematic perspective view of a compressor having a rotor assembly in accordance with the present invention and magnetic drive assembly within a sealed outer casing;
  • FIG. 2 is a cross sectional schematic view of the compressor of FIG. 1 through line 2 - 2 with an outer magnetic drive;
  • FIG. 3 is a perspective view of the rotor assembly for the compressor of FIG. 1 ;
  • FIGS. 4 and 5 are cross-sections of the rotor assembly of FIG. 3 on the line 4 - 4 showing different phases of its operation;
  • FIG. 6 is a cross sectional schematic view of the rotor assembly of FIG. 4 on the line 6 - 6 ;
  • FIG. 7 is a cross sectional schematic view of the rotor assembly of FIG. 4 on the line 7 - 7 ;
  • FIG. 8 is a cross sectional schematic view of the rotor assembly of FIG. 4 on the line 8 - 8 ;
  • FIG. 9 is a schematic view of a flapper valve assembly contained within the rotor housing of FIG. 3 ;
  • FIG. 10 is a cross section of the flapper valve assembly on the line 9 - 9 in FIG. 9 .
  • FIG. 11 is a top plan view of another embodiment of a compressor having a rotor assembly in accordance with the present invention without the magnetic drive assembly and sealed outer casing as shown in FIG. 1 and showing major internal components in dotted lines;
  • FIG. 12 is a cross sectional schematic view of the compressor of FIG. 9 through the line 12 - 12 ;
  • FIG. 13 is a cross sectional schematic view of the compressor of FIG. 9 through the line 13 - 13 .
  • FIG. 14 is a perspective view of another embodiment of a compressor having a rotor assembly in accordance with the present invention.
  • FIG. 15 is a top schematic view of the compressor of FIG. 14 showing the assembly transparently;
  • FIG. 16 is a rear perspective view of the compressor of FIG. 14 showing the assembly transparently.
  • a compressor generally indicated at 1 in FIGS. 1 & 2 , comprises a sealed outer casing generally indicated at 2 retains a rotor assembly in accordance with one embodiment of the present invention, generally indicated at 3 and an inner magnetic drive assembly generally indicated at 5 .
  • the compressor 1 in one application may be connected (as shown in FIG. 2 ) by an intake 90 and outlet 91 such as to an evaporator and a condenser of a refrigeration unit.
  • the sealed outer casing 2 has a canister section 6 which holds the rotor assembly 3 and inner magnetic drive assembly 5 and a lid section 7 which fits over the inner magnetic drive assembly 5 and onto the canister section 6 with a pair of O-rings 8 , 9 to seal the outer casing.
  • the canister section 6 has a cylindrical outer wall 10 closed at one end by plate section 11 .
  • a peripheral flange 12 extends outwardly from the top 13 of the cylindrical outer wall 10 .
  • the thickness of cylindrical outer wall 10 in a first section 14 adjacent the plate section 11 is greater than the thickness of a second section 15 which in turn is thicker than a third section extending 16 from the top 13 of the cylindrical outer wall 10 .
  • the reduction in thickness in the outer cylindrical wall 10 forms a pair of lips 17 , 18 on its inner surface 4 .
  • the rotor assembly 3 in the embodiment illustrated in FIGS. 2-8 , is comprised of a back plate 19 , rotor housing 20 and front plate 21 .
  • a timing pinion 30 is attached to the inner surface 25 of back disk 19 and mates with a ring gear 31 attached to rotor 24 . In the embodiment illustrated the timing pinion 30 is % the diameter of the ring gear 31 .
  • a pair of intake ports 32 , 33 are provided in back plate 19 that open into the sealed chamber 23 .
  • a pair of exhaust ports 34 , 35 are provided in the rotor housing 20 (see FIG. 6 ).
  • One way valves generally indicated at 38 shown as flapper valves in the drawings, permit compressed gas to exit the sealed chamber 23 but do not allow any return flow back through the exhaust ports 34 , 35 into the chamber 23 .
  • the rotor 24 is mounted on an eccentric shaft 28 for orbital movement along a path within chamber 23 .
  • the profile of chamber 23 is an outline of the path that the tips of the lobes A, B, C of the rotor 24 follows.
  • the ratio of the ring gear 31 to the eccentric gear 30 (or timing pinion) is equal to the number of lobes, in this case three, of the rotor 24 .
  • the end 32 of the eccentric shaft 28 remote from the rotor 24 is attached to an inner magnetic drive assembly generally indicated at 5 .
  • the inner magnetic drive assembly 5 has an inner magnetic drive element 33 attached to the eccentric shaft 28 where the shaft 28 extends from the front plate 21 of the rotor assembly 3 .
  • a cap portion 37 of lid section 7 of the sealed outer casing 2 encloses the inner magnetic drive assembly 5 .
  • An outer magnetic drive 38 is attached to a source of rotation (not shown) and rotates about the cap portion 37 of lid section 7 providing a mating magnetic force to turn the inner magnetic drive element 33 .
  • FIG. 4 shows the position of the rotor 24 when the eccentric shaft 28 , timing pinion 30 and ring gear 31 are as seen in the drawing.
  • the direction of rotation in this example is clockwise, and the apices of the lobes of the rotor are labeled A, B and C for convenient reference.
  • the geometry of the rotor 24 and chamber 23 and of the drive are such that the apices remain in contact with the inner wall 25 of the sealed chamber 23 .
  • Apices A, B and C of rotor 24 divide the sealed chamber 23 into three parts labeled D, E and F. Gas is introduced into the sealed chamber 23 through intake ports 32 , 32 A.
  • FIG. 5 shows the position of the rotor 24 rotated from the position in FIG. 4 with the eccentric shaft 28 , timing pinion 30 and ring gear 31 positioned as seen in the drawing.
  • the part F of the sealed chamber 23 has been reduced, compressing the gas in that section.
  • the compressed gas is exhausted through exhaust port 34 .
  • gas is drawn through the intake port 32 , 32 A into the parts D, E and F of chamber 23 , the gas is compressed and forced out of the chamber 23 through exhaust ports 34 , 35 past flapper valves 38 .
  • apex seals 36 are provided in a slot 36 A in the apex A, B and C of rotor 24 .
  • the back side of the rotor 24 fits tight against the inner surface 25 of back plate 19 and together with a lubricant provides a seal.
  • the front side of the rotor 24 fits tight against the inner surface 26 of front plate 21 and together with a lubricant provides a seal.
  • side seals may be inserted to prevent gas from leaking around the front and back sides of the rotor.
  • FIG. 6 illustrates a cross section of the rotor assembly 3 of FIG. 4 on line 6 - 6 .
  • the exhaust ports 34 , 35 are shown in the rotor housing 20 .
  • FIG. 7 illustrates a cross section of the rotor assembly 3 of FIG. 4 on line 7 - 7 .
  • the intake ports 32 , 32 A are shown in the back plate 19 although they could be located in the front plate 21 if desired.
  • FIG. 8 illustrates a cross section of the rotor assembly 3 of FIG. 4 on line 8 - 8 .
  • the apex seals 36 on apex B of rotor 24 are shown.
  • the apex seals 36 are preferably compression seals retained within slots 37 on rotor 24 .
  • the apex seals 36 run on the peripheral wall 22 of the chamber 23 defined by rotor housing 20 and as noted previously prevent leakage across the tips of the rotor 24 .
  • An apex seal spring (not shown) provides the force to keep the apex seals 36 in contact with the profile of the chamber 23 .
  • the apex seal springs are coil springs but a leaf spring or other suitable design can be used.
  • FIGS. 9 and 10 illustrate schematically the one way flapper valves 38 in the exhaust ports 34 , 35 which allow the compressed gas to exit the compressor yet allow no return flow back.
  • the flapper valves 38 have a disk 39 connected to one end of a spring 40 attached to a plug 42 .
  • the spring 40 keeps disk 39 in sealing engagement with the inlet 43 of exhaust port 34 or 35 until the pressure of the compressed gas is sufficient to push the disk 39 to open the inlet 43 and permit the compressed gas to exit through outlet 44 .
  • the flapper valve design can be different.
  • the valve may be secured on one end and flexes to allow gas to exit the compressor.
  • FIGS. 11-13 illustrate another embodiment of a compressor (suitable for use as in refrigerators although many other applications are possible) having a rotor assembly in accordance with the present invention with a direct shaft drive.
  • the compressor generally indicated at 51 in FIGS. 11-13 , comprises a rotor assembly, generally indicated at 53 and a vector plate assembly generally indicated at 55 .
  • the vector plate assembly 55 comprises a rear vector plate 56 and a seal retention plate 57 which are attached to the rotor assembly 53 .
  • Pressure and suction lines are attached to the rear vector plate 56 which is in turned bolted to the back plate 59 of the rotor assembly 53 .
  • a refrigerant gas coming into the compressor by the suction line is collected in the internal cavity 58 formed by the mating of the rear vector plate 56 and back plate 59 of the rotor assembly 53 .
  • the rotor assembly 53 is similar to the rotor assembly 3 shown in FIGS. 3 , 4 and 5 . It comprises a back plate 59 , rotor housing 60 and front plate 61 .
  • the inner peripheral wall 62 of the rotor housing 60 together with the inner surfaces 65 , 66 of back plate 59 and front plate 61 define a sealed chamber 63 within which a rotor 64 is rotated.
  • One end 67 of an eccentric shaft 68 on which the rotor 64 is mounted, is journalled in bearings 69 housed within the back plate 59 .
  • a timing pinion is attached to the inner surface 65 of back plate 59 and mates with a ring gear 71 attached to rotor 64 .
  • the timing pinion is % the diameter of the ring gear 71 .
  • Intake ports are provided in back plate 59 from cavity 58 and open into the sealed chamber 63 .
  • the refrigerant may also pass from cavity 58 through internal passages to the front of the compressor and then through intake ports in the front plate 61 into chamber 63 .
  • a pair of exhaust ports 74 , 75 are provided in the rotor housing 60 (see FIG. 13 ).
  • One way valves generally indicated at 78 shown as flapper valves in the drawings, permit compressed gas to exit the sealed chamber 63 but do not allow any return flow back through the exhaust ports 74 , 75 into the chamber 63 .
  • the rotor 64 is mounted on an eccentric shaft 68 for orbital movement along a path within chamber 63 .
  • the profile of chamber 63 is an outline of the path that the tips of the lobes of the rotor 64 follows.
  • the ratio of the ring gear 71 to the eccentric gear or timing pinion is equal to the number of lobes, in this case three, of the rotor 64 .
  • the end 82 of the eccentric shaft 68 remote from the rotor 64 may be attached to direct drive assembly (not shown).
  • the seal retention plate 57 retains a shaft seal 81 around the shaft 68 as it passes through the seal retention plate 57 .
  • FIGS. 11-13 The operation of the rotor 64 in FIGS. 11-13 is the same as in FIGS. 3-5 .
  • rotation of the rotor 64 is such that the apices of the rotor 64 remain in contact with the inner wall 62 of the sealed chamber 63 .
  • the apices of rotor 64 divide the sealed chamber 63 into three parts. Gas is introduced into the sealed chamber 63 through the intake ports. As the rotor 64 rotates the volume of each part of chamber 63 between the lobes of the rotor is continuously varied. As the volume of the chambers increases refrigerant is drawn into the compressor, inversely as the volume decreases the now compressed gas is exhausted out of the compressor.
  • the three parts of chamber 63 are never compressing at once, each is in a different phase of what could be considered a 2 phase cycle—intake and exhaust.
  • intake and exhaust As the size of a part of the sealed chamber 63 is reduced, the gas in that section is compressed. The compressed gas is exhausted through exhaust port 74 .
  • exhaust port 74 As the rotor moves clockwise, the part of the chamber from which the compressed gas has been exhausted, increases in size and gas is drawn through the intake port into that part of chamber 63 . As the rotor 64 continues to rotate, the gas is again compressed and forced out of the chamber 63 through the other exhaust port 75 past flapper valves.
  • apex seals 76 are provided on the apices of rotor 64 as shown in FIG. 12 .
  • FIG. 12 illustrates a cross section of the compressor 51 of FIG. 11 on line 12 - 12 .
  • FIG. 13 illustrates a cross section of the compressor 51 of FIG. 11 on line 13 - 13 .
  • the exhaust ports 74 , 75 are shown in the rotor housing 60 .
  • FIGS. 14-16 illustrate another embodiment of a compressor (suitable for use as in automotive air conditioners although many other applications are possible) having a rotor assembly in accordance with the present invention with a direct shaft drive.
  • the compressor generally indicated at 101 in FIGS. 14-16 , comprises a rotor assembly and a vector plate assembly.
  • the vector plate assembly comprises a rear vector plate 106 and a front vector plate 107 which are attached to the rotor assembly 103 .
  • Pressure and suction lines are attached to the rear vector plate 106 at suction inlet 104 A and pressure outlet 104 B respectively which is in turned bolted to the back plate 109 of the rotor assembly 103 .
  • a refrigerant gas coming into the compressor by the suction line is collected in the internal cavity 108 formed by the mating of the rear vector plate 106 and back plate 109 of the rotor assembly 103 .
  • one or more internal passages 108 A connects the internal cavity 108 formed by the mating of the rear vector plate 106 and back plate 109 , with a similar internal cavity 108 B formed by the mating of the front vector plate 107 and front plate 111 of the rotor assembly 103 .
  • the rotor assembly 103 is similar to the rotor assembly 3 shown in FIGS. 3 , 4 and 5 . It comprises a back plate, rotor housing and front plate similar to the embodiments shown in the other figures although relative dimensions are different.
  • the inner peripheral wall of the rotor housing together with the inner surfaces of back plate 109 and front plate 111 define a sealed chamber within which a rotor is rotated.
  • One end of an eccentric shaft 118 on which the rotor is mounted, is journalled in bearings housed within the back plate 109 .
  • a timing pinion is attached to the inner surface of back plate 109 and mates with a ring gear attached to rotor. In the embodiment illustrated the timing pinion is 2 ⁇ 3 the diameter of the ring gear.
  • Intake ports are provided in back plate 109 from cavity 108 and front plate 111 from cavity 108 B and open into the sealed chamber.
  • a pair of exhaust ports are provided in the rotor housing.
  • One way valves preferably flapper valves, permit compressed gas to exit the sealed chamber at pressure outlets 104 B but do not allow any return flow back through the exhaust ports into the chamber.
  • the rotor is mounted on an eccentric shaft 118 for orbital movement along a path within chamber.
  • the profile of the chamber is an outline of the path that the tips of the lobes of the rotor follow.
  • the ratio of the ring gear to the eccentric gear or timing pinion is equal to the number of lobes, in this case three, of the rotor.
  • the end 132 of the eccentric shaft 118 remote from the rotor may be attached to direct drive assembly (not shown).
  • the front vector plate 107 retains a shaft seal around the shaft 118 as it passes through the front vector plate 107 .
  • FIGS. 14-16 The operation of the rotor in FIGS. 14-16 is the same as in FIGS. 3-5 .
  • Rotation of the rotor is such that the apices of the rotor remain in contact with the inner wall of the sealed chamber.
  • the apices of rotor divide the sealed chamber into three parts. Gas is introduced into the sealed chamber through the intake ports. In the embodiment illustrated there are intake ports provided in the back plate 109 and additional intake ports in the front plate 111 .
  • intake ports provided in the back plate 109 and additional intake ports in the front plate 111 .
  • the three parts of chamber are never all compressing at the same time, each is in a different phase of what could be considered a 2 phase cycle—intake and exhaust.
  • intake and exhaust As the size of a part of the sealed chamber is reduced, the gas in that section is compressed.
  • the compressed gas is exhausted through exhaust port which is connected to pressure outlet 104 B.
  • the part of the chamber from which the compressed gas has been exhausted increases in size and gas is drawn through the intake port into that part of chamber.
  • the gas is again compressed and forced out of the chamber through the other exhaust port past flapper valves to pressure outlet 104 B.
  • apex seals are provided on the apices of rotor.
  • the rotor assembly of the present invention is particularly useful in compressors in various applications including (but not limited to) consumer household, automotive air conditioners, industrial, portable, transportable, commercial, scientific, medical, environmental and military disciplines. If required, multiple rotors or multiple rotor assemblies can be provided in a compressor in accordance with present invention.
  • a number of the advantages of the present invention over conventional compressor designs are as follows:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
US12/990,115 2008-04-28 2008-07-23 Rotor Assembly for Rotary Compressor Abandoned US20110262291A1 (en)

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Application Number Priority Date Filing Date Title
US12/990,115 US20110262291A1 (en) 2008-04-28 2008-07-23 Rotor Assembly for Rotary Compressor
US14/616,210 US20150152867A1 (en) 2008-04-28 2015-02-06 Rotor Assembly for Rotary Compressor
US16/006,566 US20180291898A1 (en) 2008-04-28 2018-06-12 Rotor assembly for rotary compressor

Applications Claiming Priority (3)

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US7140208P 2008-04-28 2008-04-28
US12/990,115 US20110262291A1 (en) 2008-04-28 2008-07-23 Rotor Assembly for Rotary Compressor
PCT/CA2008/001332 WO2009132412A1 (en) 2008-04-28 2008-07-23 Rotor assembly for rotary compressor

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US14/616,210 Continuation-In-Part US20150152867A1 (en) 2008-04-28 2015-02-06 Rotor Assembly for Rotary Compressor

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US14/616,210 Abandoned US20150152867A1 (en) 2008-04-28 2015-02-06 Rotor Assembly for Rotary Compressor
US16/006,566 Abandoned US20180291898A1 (en) 2008-04-28 2018-06-12 Rotor assembly for rotary compressor

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US16/006,566 Abandoned US20180291898A1 (en) 2008-04-28 2018-06-12 Rotor assembly for rotary compressor

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US10087758B2 (en) 2013-06-05 2018-10-02 Rotoliptic Technologies Incorporated Rotary machine
US10596721B2 (en) 2014-11-25 2020-03-24 Corning Incorporated Apparatus and method of manufacturing ceramic honeycomb body
US10837444B2 (en) 2018-09-11 2020-11-17 Rotoliptic Technologies Incorporated Helical trochoidal rotary machines with offset
US11802558B2 (en) 2020-12-30 2023-10-31 Rotoliptic Technologies Incorporated Axial load in helical trochoidal rotary machines
US11815094B2 (en) 2020-03-10 2023-11-14 Rotoliptic Technologies Incorporated Fixed-eccentricity helical trochoidal rotary machines

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CN104389639B (zh) * 2013-09-23 2017-09-05 摩尔动力(北京)技术股份有限公司 偏心轴孔转子流体机构
CN103835947A (zh) * 2014-02-26 2014-06-04 北京工业大学 微型封闭式三角转子压缩机
JP2016035215A (ja) * 2014-08-01 2016-03-17 サンデンホールディングス株式会社 圧縮機
CN104131977B (zh) * 2014-08-18 2016-09-07 梁运富 圆筒式压气机
EP3580460A4 (en) 2017-04-07 2020-11-04 Stackpole International Engineered Products, Ltd. EPITROCHOID VACUUM PUMP
CN113084487B (zh) * 2021-05-20 2022-04-08 大庆市奥凯利石油机械制造有限公司 一种压缩机生产制造组装装配方法
US11761376B1 (en) * 2022-11-11 2023-09-19 Pratt & Whitney Canada Corp. Side plate for rotary engine

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US11988208B2 (en) 2018-09-11 2024-05-21 Rotoliptic Technologies Incorporated Sealing in helical trochoidal rotary machines
US11815094B2 (en) 2020-03-10 2023-11-14 Rotoliptic Technologies Incorporated Fixed-eccentricity helical trochoidal rotary machines
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CA2636006C (en) 2010-09-14
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CN102076972A (zh) 2011-05-25
US20180291898A1 (en) 2018-10-11
EP2297464A1 (en) 2011-03-23
US20150152867A1 (en) 2015-06-04

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