WO2018132628A1 - Compresseur de fluide - Google Patents

Compresseur de fluide Download PDF

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Publication number
WO2018132628A1
WO2018132628A1 PCT/US2018/013434 US2018013434W WO2018132628A1 WO 2018132628 A1 WO2018132628 A1 WO 2018132628A1 US 2018013434 W US2018013434 W US 2018013434W WO 2018132628 A1 WO2018132628 A1 WO 2018132628A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
pockets
discharge
compression chamber
fluid compressor
Prior art date
Application number
PCT/US2018/013434
Other languages
English (en)
Inventor
Kevin Mumpower
Nicholas Sweet
Original Assignee
Bristol Compressors International, Llc
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 Bristol Compressors International, Llc filed Critical Bristol Compressors International, Llc
Publication of WO2018132628A1 publication Critical patent/WO2018132628A1/fr

Links

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
    • 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
    • F04C18/344—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 inner member
    • F04C18/3446—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 inner member the inner and outer member being in contact along more than one line or surface
    • 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
    • F04C29/023—Lubricant distribution through a hollow driving shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
    • F04C29/128—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type of the elastic type, e.g. reed valves
    • 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
    • F04C2210/00—Fluid
    • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
    • 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
    • F04C2240/20—Rotors
    • 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
    • F04C2240/40—Electric motor
    • 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
    • F04C2240/60—Shafts
    • F04C2240/603—Shafts with internal channels for fluid distribution, e.g. hollow shaft
    • 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
    • F04C29/04—Heating; Cooling; Heat insulation
    • F04C29/045—Heating; Cooling; Heat insulation of the electric motor in hermetic pumps

Definitions

  • This application relates to various improvements in structures for fluid compressors.
  • Refrigerant compressors are utilized to compress a refrigerant for use in a refrigerant cycle.
  • the present invention seeks to address these deficiencies.
  • a fluid compressor in one embodiment, includes a housing, a compression chamber, and a shaft including two vanes that each extend from the shaft to contact an inner surface of the compression chamber.
  • the shaft, vanes, and inner surface of the compression chamber define at least two suction pockets and at least two discharge compression pockets arranged around a perimeter of the shaft. Each suction pocket is between two discharge pockets and each discharge pocket is between two suction pockets.
  • Figure 1 is a side cutaway view of a compressor in accordance with one embodiment of the present invention:
  • Figure 2 is a top view of the shaft and vane assembly shown in Figure 1;
  • Figure 3 is a perspective view of a lower bearing and oil sump of one embodiment of the present invention.
  • Figure 4 is a perspective view of the compression chamber without the shaft and vane assembly.
  • FIG. 5 is a perspective view of a discharge valve assembly of one embodiment of the present invention.
  • Figure 6 is a perspective view of the motor in the housing without the compression chamber assembly
  • Figure 7 is a perspective view of the upper bearing plate of one embodiment of the present invention.
  • Figure 8 is a top view of the shaft 30 of one embodiment of the present invention.
  • Figure 9 is a close up cross-sectional view of the connection between the stator laminates and the housing of one embodiment of the present invention;
  • Figure 10 is a perspective view of a second embodiment of the upper bearing plate of one embodiment of the present invention.
  • Figure 11 is a cross-sectional side view of the connection between the intake port and the compression chamber in a "no" pressure embodiment of the present invention
  • Figure 12 is a cross-sectional side view of the connection between the discharge port arid the compression chamber in a "no" pressure embodiment of the present invention
  • Figure 13 is a perspective view of a shaft according to alternative embodiment of the present invention.
  • Figure 14 are views of a compression chamber according to alternative embodiment of the present invention.
  • Figure 15 is a perspective view of a shaft detachable from a Vane holding portion according to another alternative embodiment of the present invention. arid
  • Figure 16 is a perspective view of a vane holding portion of the shaft shown in Figure 15.
  • Figure 1 shows a fluid compressor 10 including a housing 25, a shaft 30, a motor 50, upper bearing 60, and lower bearing 70.
  • Shaft 30 has apertures 32 (labeled in Figure 8) into which vanes 35 can reciprocate back and forth as the shaft 30 turns.
  • Motor 50 is mounted directly to housing 20, and drives shaft 30.
  • Lower bearing 70 includes oil sump 72 which collects oil that lubricates the compressor parts as discussed herein.
  • motor shaft 30 is supported symmetrically at both ends of shaft 30 for concentric motor rotor rotation for maximum efficiency and eqiiai nominal air gap dimensional control.
  • FIG. 2 shows a top view of the compression chamber 20.
  • Compression chamber 20, shaft 30, and vanes 35 cooperate to form two compression pockets 36 and two discharge pockets 37.
  • the compression pockets 36 and discharge pockets 37 are on opposite sides of the shaft from one another, so that the loading on compressor 10 is balanced.
  • compressor 10 generates dramatically less vibration and noise, and less bearing load, bearing friction, and wear. All motor torque and power is delivered to the circumferential compression movement. This directly leads to significant energy efficiency gains, and mechanism reliability, as the motor consumes more power if the compressor generates vibrations or noise.
  • This "concentric compression” allows for balanced high speed rotation which then creates a very small displacement needed tor a large output capacity. Accordingly, the present invention provides substantia! energy and cost savings over conventional compressors and substantial capacity increases creating greater displacements in smaller material content.
  • FIG. 13 shows an exemplary shaft 30 including a vane holding portion 33 with eight vane holding slots 34.
  • Figure 14 shows a compression chamber 20 that is configured to be used with the eight vaned shaft of Figure 13.
  • the embodiment of Figures 13 and 14 would include 8 vanes separating the compression and discharge pockets, with a corresponding number of additional intake and exhaust valves being included in the design.
  • compressors with more than two vanes are within the scope of the invention as claimed,
  • compressor 10 in forming the compression pockets 36 and discharge pockets 37, shaft 30 comes in close proximity with the inside of the compression chamber 20. This is achieved by tight clearances on the two sides between shaft 30 and compression chamber 20 to prevent high pressure to Sow pressure leak paths.
  • compressor 10 can also have spring/pressure loaded/compliant vanes in die compression chamber 20 to press against shaft 30 for sealing and/or a compliant spring or pressure mechanism to provide a load for pressure sealing.
  • Figure 3 shows another view of lower bearing 70.
  • the slope of the oil sump 72 allows the use of less oil, 50% less in some configurations. This reduces both the initial and maintenance costs of the compressor, and forces the oil to drain to the oil pickup point in the shaft.
  • FIG. 2 shows a low pressure machine configuration in which low pressure fluid enters the lower part of the compressor and high pressure fluid exits a top of the compressor.
  • Figure 4 shows intake aperture 22 in the floor of the compression chamber, through which low pressure gas enters the compression pockets 36. (A second intake aperture 22 is on an opposite side of the compression chamber and is not visible in Figure 4.)
  • Figure 5 shows high pressure exit valves 40 on a top of the compressor, as well as low pressure intake passage 42 and electrical feiedthrough 48, Electrical feedihrough 48 is similar to that disclosed in U.S. Patent No. 9,279,435, which is incorporated herein by reference in its entirety.
  • FIG 11 shows a side cutaway view of a first embodiment of a "no" pressure machine in which the fluid comes in the bottom of compression chamber 20 and is discharged through the top of compression chamber 20.
  • fluid to be compressed enters the housing through low pressure intake passage 42.
  • the fluid passes through passage 122 in flange 120 so that it does not enter the volume surrounding the motor/oil area, but travels directly to holes 62 in lower bearing flange 65 and passes through, intake aperture 22.
  • the fluid enters compression chamber 20 without ever being exposed to the motor/oil area.
  • the fluid passes through discharge valves 40, as also shown in Figure 5.
  • Figure 12 shows a side cutaway view of a first embodiment of a "no" pressure machine in which the fluid comes in the top of compression chamber 20 and is discharged, through the bottom of compression chamber 20.
  • fluid to be compressed enters the housing through intake aperture 22.
  • the fluid passes through discharge valves 64 in lower bearing flange 65, and then through passage 122 in flange 120 so that it does not enter the volume surrounding the motor/oil area. The fluid then leaves tire housing through discharge port 49.
  • FIG 6 shows the motor 50 within the housing 25.
  • motor 50 is directly mounted to and in contact with the inner surface of housing 25.
  • the outer surface of housing 25 may have heat dissipation fins and micro surface textures to enhance heat dissipation.
  • Figure 9 shows a close up of the contact between the motor laminate layers 52 and the housing 25. (Although the housing has a circular cross-section, fhe housing is shown in mis view as having straight sides due to the small scale.)
  • Each stator laminate layer 52 has a thickness of approximately ,020 inches.
  • Each stator laminate layer 52 may then fine up with a corresponding heat dissipation fin 26 on an outer surface of housing 25 to promote heat transfer from the laminate layer 52, through housing 25, and out corresponding fin 26.
  • Fin 26 is shown with a triangular cross-section, but any shape or configuration suitable for heat dissipation is possible. These modifications are within the scope of the invention as claimed.
  • FIG 7 shows the upper bearing flange 65 which includes upper bearing 60 and holes 62
  • holes 62 are in fluid communication with intake aperture 22 in the floor of the compression chamber.
  • discharge valves 64 shown in Figure 10.
  • Figure 8 shows a top view of shaft 30.
  • Shaft 30 includes apcrtUJres 32 in which She vanes 35 reciprocate.
  • shaft 30 includes off center oil delivery passage 34, Oil delivery passage 34 uses centrifugal force to send oil out for increasing pressure and sending oii up to bearing 60. Vent, holes in passage 34 supply lubrication to ail moving surfaces.
  • Figures 15 and 16 show another alternative em bodiment of the shaft 30.
  • the shaft 30 and the vane holding portion 33 are constructed as separate pieces that are then fit together during assembly, instead of the unitary machined shaft shown in Figure 13 (for example). This allows tor axial compliance and leeway during assembly and use. This allows for tight seals within the compression chamber while reducing wear due to manufacturing tolerances.
  • Two piece shafts such as that shown in Figures 15 and 16 are also within the scope of the invention as claimed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)
  • Compressor (AREA)

Abstract

La présente invention concerne un compresseur de fluide comprenant un logement, une chambre de compression et un arbre comprenant deux aubes qui s'étendent chacune à partir de l'arbre pour entrer en contact avec une surface interne de la chambre de compression. L'arbre, les aubes et la surface interne de la chambre de compression définissent au moins deux poches d'aspiration et au moins deux poches de compression d'évacuation disposées autour d'un périmètre de l'arbre. Chaque poche d'aspiration se trouve entre deux poches d'évacuation et chaque poche d'évacuation se trouve entre deux poches d'aspiration.
PCT/US2018/013434 2017-01-12 2018-01-12 Compresseur de fluide WO2018132628A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201762445297P 2017-01-12 2017-01-12
US62/445,297 2017-01-12
US15/869,151 2018-01-12
US15/869,151 US20180195511A1 (en) 2017-01-12 2018-01-12 Fluid compressor

Publications (1)

Publication Number Publication Date
WO2018132628A1 true WO2018132628A1 (fr) 2018-07-19

Family

ID=62782275

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2018/013434 WO2018132628A1 (fr) 2017-01-12 2018-01-12 Compresseur de fluide

Country Status (2)

Country Link
US (1) US20180195511A1 (fr)
WO (1) WO2018132628A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4459090A (en) * 1981-04-24 1984-07-10 Matsushita Electric Industrial Co., Ltd. Rotary type compressor for automotive air conditioners
US4875838A (en) * 1988-05-12 1989-10-24 Tecumseh Products Company Scroll compressor with orbiting scroll member biased by oil pressure
US5169299A (en) * 1991-10-18 1992-12-08 Tecumseh Products Company Rotary vane compressor with reduced pressure on the inner vane tips
WO2016168015A1 (fr) * 2015-04-13 2016-10-20 Carrier Corporation Compresseur à bobine économique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0414785U (fr) * 1990-05-24 1992-02-06
US6139295A (en) * 1998-06-22 2000-10-31 Tecumseh Products Company Bearing lubrication system for a scroll compressor
US7748226B2 (en) * 2003-03-25 2010-07-06 Denso Corporation Waste heat utilizing system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4459090A (en) * 1981-04-24 1984-07-10 Matsushita Electric Industrial Co., Ltd. Rotary type compressor for automotive air conditioners
US4875838A (en) * 1988-05-12 1989-10-24 Tecumseh Products Company Scroll compressor with orbiting scroll member biased by oil pressure
US5169299A (en) * 1991-10-18 1992-12-08 Tecumseh Products Company Rotary vane compressor with reduced pressure on the inner vane tips
WO2016168015A1 (fr) * 2015-04-13 2016-10-20 Carrier Corporation Compresseur à bobine économique

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