US20020079764A1 - Compressor and driving motor assembly - Google Patents

Compressor and driving motor assembly Download PDF

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Publication number
US20020079764A1
US20020079764A1 US09/995,052 US99505201A US2002079764A1 US 20020079764 A1 US20020079764 A1 US 20020079764A1 US 99505201 A US99505201 A US 99505201A US 2002079764 A1 US2002079764 A1 US 2002079764A1
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Prior art keywords
compressor
motor
assembly according
rotor
assembly
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Abandoned
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US09/995,052
Inventor
Roger Cook
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Trane UK Ltd
Ingersoll Rand Co
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Ingersoll Rand Co
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Assigned to INGERSOLL-RAND EUROPEAN SALES LIMITED reassignment INGERSOLL-RAND EUROPEAN SALES LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: COOK, ROGER
Publication of US20020079764A1 publication Critical patent/US20020079764A1/en
Priority to US11/223,763 priority Critical patent/US7573165B2/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
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • 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
    • F04C2240/51—Bearings for cantilever assemblies

Definitions

  • the present invention relates to a compressor and driving motor assembly.
  • FIG. 1 Such a known compressor and motor assembly is shown in FIG. 1. It includes a rotary screw air compressor 1 having bearings 7 , and an extended male input shaft 2 which is connected to the rotor 3 of the motor 4 . Even in this simplest form the shear weight of the rotor requires the rotor 3 and input shaft 2 to be supported on additional bearings 5 .
  • motors are known to be used to drive compressors.
  • fixed speed drive motors known to be used to drive rotary screw air compressors, whether flooded or oil free, have involved induction motors linked to various mechanisms of air flow rate control, such as automatic start and stop and more sophisticated inlet controls which limit flow rate in response to variation in system pressure.
  • Variable speed drive motors are also known for use with compressors such as rotary screw air compressors. These include mechanical speed variation motors, variable speed induction motors (VFD), and variable speed switched reluctance motors (SRD).
  • VFD variable speed induction motors
  • SRD variable speed switched reluctance motors
  • variable speed induction motors driven by variable frequency inverters are used more widely.
  • the disadvantages are that there are losses in efficiency due to the electronics involved and limitations imposed by the induction motor itself. Although enhanced in most cases with improved insulation, the induction motor can still be nevertheless a compromise from the reliability and efficiency standpoint.
  • variable frequency induction motors even if modified to withstand the rigours of variable frequency inverter drive are large and intrinsically heavy units.
  • All the compressor products on the market today using VFD drive systems are a development of existing compressor packaging technologies due to the physical constraints imposed by the use of the induction motors.
  • the motors which drive the compressors are usually without gears but with adapter housings, couplings, etc. due to the sizes and masses of the motors involved.
  • conventional motor construction involving heavy castings, bearings, end shields, couplings, adapter housings and other relatively expensive components are required.
  • Compressors are also known involving switch reluctance main drive motors and suitably modified variable frequency inverter drives (SRD), however these also have similar disadvantages.
  • hybrid permanent magnet motors are, in themselves, known.
  • magnetic flux to drive the rotor is produced by both permanent magnets and current flow in electromagnetic coils. Examples are described in, for example, U.S. Pat. Nos 4,079,278 and 4,830,412, United Kingdom patent application GB-A-2291274 and European patent EP-A-0780954.
  • the present invention in its first aspect provides a compressor and driving motor assembly, in which the motor comprises a rotor and a stator assembly, and the compressor comprises a main body which supports a drive shaft, the rotor being mounted directly on the drive shaft, in which the drive shaft acts as a cantilever supporting the rotor.
  • a ‘pancake’ style motor in the assembly.
  • Support bearing(s) at a distance from the compressor are not required and so are preferably not provided.
  • the direct connection of rotor to drive shaft avoids the need for additional connection means such as couplings, bearings, gears and belts, which would give rise to energy losses, increased complexity and cost, and risks of these components being unreliable.
  • the compressor includes bearings, the loads on which are acceptable in fully supporting the rotor. Preferred embodiments are small and compact and simple in construction and ease of assembly, and are low maintenance.
  • the rotor is preferably shaped so as to have a tapered central longitudinal aperture adapted to fit to a correspondingly tapered portion of the drive shift.
  • the drive shaft preferably includes releasable retaining means operative to secure the rotor once fitted on the drive shaft.
  • the stator assembly is preferably connected to the housing of the compressor. This connection is preferably directly to the housing or by way of an adapter flange.
  • the compressor is preferably an air compressor.
  • the compressor is preferably a rotary screw compressor.
  • the present invention in its second aspect provides a compressor and driving motor assembly, the driving motor being a hybrid permanent magnet motor.
  • the present invention in its preferred embodiments advantageously provides a compressor assembly having a smaller and lighter motor than earlier known assemblies involving, for example, induction or SRD-type drive motors.
  • the motor is sufficiently small and light that no support bearing at a distance from the compressor is required to support the motor.
  • the motor is preferably mounted directly to the compressor.
  • the rotor of the motor is preferably mounted directly on the shaft of the compressor (so as to provide direct drive).
  • the housing of the motor is directly connected to the compressor housing or to a support plate connected to the compressor housing.
  • the compressor is preferably an air compressor.
  • the compressor is preferably a rotary screw compressor.
  • the motor can be a fixed speed motor or can be a variable speed motor.
  • the rotary screw air compressor can be of flooded type or can be of the oil-free type.
  • the preferred assembly is small, compact, technically simple, efficient and reliable.
  • FIG. 1 is a diagrammatic sectional view of a prior art air compressor and motor assembly
  • FIG. 2 is a diagrammatic section view for comparison with FIG. 1 of a preferred air compressor and motor assembly according to the invention
  • FIG. 3 is an exploded perspective view of the air compressor and motor assembly shown in FIG. 2, and
  • FIG. 4 is a more detailed sectional view of a portion of the air compressor and motor assembly shown in FIGS. 2 and 3.
  • the preferred compressor and motor assembly 10 consists of a rotary screw air compressor 12 and a motor 14 .
  • the rotary screw air compressor 12 (also known as an airend) includes a housing 16 from which extends a shaft 18 (known as an airend input shaft) in use driven to rotate by the motor 14 .
  • the motor 14 is located by a spigot (not shown) and attached by bolts 20 entered through mounting blocks 22 to an adapter flange 24 of the compressor 12 connected to the housing 16 of compressor 12 .
  • the adapter flange 24 includes a main shaft seal 26 configured to cooperate with a shaft seal wear sleeve 28 around a cylindrical portion 30 of the shaft 18 .
  • the adapter flange 24 also includes a shaft dust seal 32 which also cooperates with the sleeve 28 .
  • the compressor 12 includes an input shaft bearing 34 within its housing 16 .
  • the shaft 18 has a frustoconical i.e. tapered end portion 36 having a threaded end aperture (not shown) configured to receive a retention bolt 38 .
  • the motor 14 is a hybrid permanent magnet (HPM) motor 41 . It consists of a stator 40 including stator laminations 42 and stator coils 44 . The rotor laminations 48 mounted on an apertured rotor shaft 50 , the aperture 52 of which is of tapered shape to fit the end portion 36 of the shaft 18 of the compressor 12 . The rotor shaft 50 is secured to the shaft 18 of the compressor 12 by retention bolt 38 .
  • HPM hybrid permanent magnet
  • the motor 14 has a motor-cooling fan 54 attached to the rotor 40 .
  • the motor 14 has a casing 56 which includes a fan cowling 58 .
  • the fan cowling 58 has air inlet apertures 60 .
  • the motor 14 includes at least one rotor positioning sensor 62 or as shown in FIG. 3 optionally includes an encoder 64 (i.e. shaft positioning device).
  • an encoder 64 i.e. shaft positioning device
  • the rotor 46 is mounted directly on to the shaft 18 of the air compressor 12 using a simple tapered fit. This is possible due to the low size and weight of the hybrid permanent magnet motor.
  • the rotor 46 is secured using a single retention bolt 38 with the compressor fluid and or the compressed air retained within the compressor itself by a conventional lip sealing arrangement (main seal 26 ) backed up with a single-lip dust seal 32 .
  • stator is then mounted over the rotor located by a spigot feature and retained using mounting blocks 22 and bolts 20 .
  • a simple fan cowl 58 to effect the cooling of the motor is provided, however in other embodiments this open drip proof design of cowl in accordance with International Electrical Committee IEC 34-5 Protection Standard No. IP23 is replaced by a totally enclosed cowl in accordance with International Electrical Committee IEC 34-5 Protection Standard IP54 protection.
  • the compressor is a gas compressor where the gas is other than air, or a refrigerant compressor.
  • the compressor is of reciprocating i.e. piston-type, or rotary type, or any other type having internal rotating elements.

Abstract

In a compressor and driving motor assembly, the driving motor is a hybrid permanent magnet motor and/or has a rotor mounted directly on the drive shaft of the compressor, the drive shaft acting as a cantilever supporting the rotor.

Description

    FIELD OF THE INVENTION
  • The present invention relates to a compressor and driving motor assembly. [0001]
    • BACKGROUND OF THE INVENTION
  • Traditional methods of driving compressors using conventional electric motors include not only direct drive connections, but also intermediate couplings, belts, pulleys and gears. In the simplest known form there is direct drive with the motor rotor joined directly onto the input shaft of a compressor. Such a known compressor and motor assembly is shown in FIG. 1. It includes a rotary screw air compressor [0002] 1 having bearings 7, and an extended male input shaft 2 which is connected to the rotor 3 of the motor 4. Even in this simplest form the shear weight of the rotor requires the rotor 3 and input shaft 2 to be supported on additional bearings 5.
  • Various types of motors are known to be used to drive compressors. For example, fixed speed drive motors known to be used to drive rotary screw air compressors, whether flooded or oil free, have involved induction motors linked to various mechanisms of air flow rate control, such as automatic start and stop and more sophisticated inlet controls which limit flow rate in response to variation in system pressure. [0003]
  • Variable speed drive motors are also known for use with compressors such as rotary screw air compressors. These include mechanical speed variation motors, variable speed induction motors (VFD), and variable speed switched reluctance motors (SRD). [0004]
  • Although motors with mechanical speed variation have been tried in limited air compressor applications, these suffer disadvantages of underlying complexity, questionable reliability and overall poor efficiency. [0005]
  • Variable speed induction motors driven by variable frequency inverters are used more widely. The disadvantages are that there are losses in efficiency due to the electronics involved and limitations imposed by the induction motor itself. Although enhanced in most cases with improved insulation, the induction motor can still be nevertheless a compromise from the reliability and efficiency standpoint. [0006]
  • In addition, variable frequency induction motors even if modified to withstand the rigours of variable frequency inverter drive are large and intrinsically heavy units. All the compressor products on the market today using VFD drive systems are a development of existing compressor packaging technologies due to the physical constraints imposed by the use of the induction motors. In all these cases the motors which drive the compressors are usually without gears but with adapter housings, couplings, etc. due to the sizes and masses of the motors involved. Additionally, due to the method of construction and the size of the motor windings, rotor assembly, etc., conventional motor construction involving heavy castings, bearings, end shields, couplings, adapter housings and other relatively expensive components are required. [0007]
  • Compressors are also known involving switch reluctance main drive motors and suitably modified variable frequency inverter drives (SRD), however these also have similar disadvantages. [0008]
  • As a separate matter, hybrid permanent magnet motors are, in themselves, known. In these, magnetic flux to drive the rotor is produced by both permanent magnets and current flow in electromagnetic coils. Examples are described in, for example, U.S. Pat. Nos 4,079,278 and 4,830,412, United Kingdom patent application GB-A-2291274 and European patent EP-A-0780954. [0009]
    • SUMMARY OF THE INVENTION
  • The present invention in its first aspect provides a compressor and driving motor assembly, in which the motor comprises a rotor and a stator assembly, and the compressor comprises a main body which supports a drive shaft, the rotor being mounted directly on the drive shaft, in which the drive shaft acts as a cantilever supporting the rotor. [0010]
  • In its preferred embodiments, there is thus provided a ‘pancake’ style motor in the assembly. Support bearing(s) at a distance from the compressor are not required and so are preferably not provided. The direct connection of rotor to drive shaft avoids the need for additional connection means such as couplings, bearings, gears and belts, which would give rise to energy losses, increased complexity and cost, and risks of these components being unreliable. The compressor includes bearings, the loads on which are acceptable in fully supporting the rotor. Preferred embodiments are small and compact and simple in construction and ease of assembly, and are low maintenance. [0011]
  • The rotor is preferably shaped so as to have a tapered central longitudinal aperture adapted to fit to a correspondingly tapered portion of the drive shift. The drive shaft preferably includes releasable retaining means operative to secure the rotor once fitted on the drive shaft. [0012]
  • The stator assembly is preferably connected to the housing of the compressor. This connection is preferably directly to the housing or by way of an adapter flange. [0013]
  • The compressor is preferably an air compressor. The compressor is preferably a rotary screw compressor. [0014]
  • The present invention in its second aspect provides a compressor and driving motor assembly, the driving motor being a hybrid permanent magnet motor. [0015]
  • The present invention in its preferred embodiments advantageously provides a compressor assembly having a smaller and lighter motor than earlier known assemblies involving, for example, induction or SRD-type drive motors. Advantageously the motor is sufficiently small and light that no support bearing at a distance from the compressor is required to support the motor. [0016]
  • The motor is preferably mounted directly to the compressor. The rotor of the motor is preferably mounted directly on the shaft of the compressor (so as to provide direct drive). The housing of the motor is directly connected to the compressor housing or to a support plate connected to the compressor housing. [0017]
  • The compressor is preferably an air compressor. The compressor is preferably a rotary screw compressor. [0018]
  • The motor can be a fixed speed motor or can be a variable speed motor. [0019]
  • The rotary screw air compressor can be of flooded type or can be of the oil-free type. [0020]
  • The preferred assembly is small, compact, technically simple, efficient and reliable.[0021]
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • Preferred embodiments of the present invention will now be described by way of example and with reference to the drawings in which: [0022]
  • FIG. 1 is a diagrammatic sectional view of a prior art air compressor and motor assembly, [0023]
  • FIG. 2 is a diagrammatic section view for comparison with FIG. 1 of a preferred air compressor and motor assembly according to the invention, [0024]
  • FIG. 3 is an exploded perspective view of the air compressor and motor assembly shown in FIG. 2, and [0025]
  • FIG. 4 is a more detailed sectional view of a portion of the air compressor and motor assembly shown in FIGS. 2 and 3. [0026]
    • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The Assembly
  • As shown in FIGS. [0027] 2 to 4, the preferred compressor and motor assembly 10 consists of a rotary screw air compressor 12 and a motor 14.
    • The Rotary Screw Air Compressor 12
  • The rotary screw air compressor [0028] 12 (also known as an airend) includes a housing 16 from which extends a shaft 18 (known as an airend input shaft) in use driven to rotate by the motor 14.
  • The [0029] motor 14 is located by a spigot (not shown) and attached by bolts 20 entered through mounting blocks 22 to an adapter flange 24 of the compressor 12 connected to the housing 16 of compressor 12. The adapter flange 24 includes a main shaft seal 26 configured to cooperate with a shaft seal wear sleeve 28 around a cylindrical portion 30 of the shaft 18. The adapter flange 24 also includes a shaft dust seal 32 which also cooperates with the sleeve 28. The compressor 12 includes an input shaft bearing 34 within its housing 16.
  • The [0030] shaft 18 has a frustoconical i.e. tapered end portion 36 having a threaded end aperture (not shown) configured to receive a retention bolt 38.
    • The Motor
  • The [0031] motor 14 is a hybrid permanent magnet (HPM) motor 41. It consists of a stator 40 including stator laminations 42 and stator coils 44. The rotor laminations 48 mounted on an apertured rotor shaft 50, the aperture 52 of which is of tapered shape to fit the end portion 36 of the shaft 18 of the compressor 12. The rotor shaft 50 is secured to the shaft 18 of the compressor 12 by retention bolt 38.
  • The [0032] motor 14 has a motor-cooling fan 54 attached to the rotor 40. The motor 14 has a casing 56 which includes a fan cowling 58. The fan cowling 58 has air inlet apertures 60.
  • As shown in FIG. 4, the [0033] motor 14 includes at least one rotor positioning sensor 62 or as shown in FIG. 3 optionally includes an encoder 64 (i.e. shaft positioning device).
  • There is an [0034] air gap 66 between the rotor 46 and stator 40. There are cooling air exits 68 from the motor casing 56 located at a distance from the inlets 60.
  • Drive Connection of Motor to Compressor [0035]
  • As can be seen in FIG. 4, the [0036] rotor 46 is mounted directly on to the shaft 18 of the air compressor 12 using a simple tapered fit. This is possible due to the low size and weight of the hybrid permanent magnet motor.
  • The [0037] rotor 46 is secured using a single retention bolt 38 with the compressor fluid and or the compressed air retained within the compressor itself by a conventional lip sealing arrangement (main seal 26) backed up with a single-lip dust seal 32.
  • The stator is then mounted over the rotor located by a spigot feature and retained using mounting [0038] blocks 22 and bolts 20. A simple fan cowl 58 to effect the cooling of the motor is provided, however in other embodiments this open drip proof design of cowl in accordance with International Electrical Committee IEC 34-5 Protection Standard No. IP23 is replaced by a totally enclosed cowl in accordance with International Electrical Committee IEC 34-5 Protection Standard IP54 protection.
  • Some benefits of the preferred direct i.e. cantilever arrangement of mounting the rotor of the motor to the drive shaft of the compressor can be listed as follows: [0039]
  • Reduced assembly time [0040]
  • Reduced cost [0041]
  • Reduced inventory [0042]
  • Reduced dimension [0043]
  • Reduced weight [0044]
  • Reduced transmission power loss [0045]
  • Improved handling [0046]
  • No gears [0047]
  • No lubrication (motor) [0048]
  • No bearings [0049]
  • No seals in the motor [0050]
  • No alignment procedures [0051]
  • No or greatly reduced maintenance [0052]
  • Significantly increased reliability [0053]
  • Significantly reduced product variants [0054]
  • Voltage and frequency variations accommodated by one design [0055]
  • In some other embodiments of the invention, the compressor is a gas compressor where the gas is other than air, or a refrigerant compressor. In some other embodiments, the compressor is of reciprocating i.e. piston-type, or rotary type, or any other type having internal rotating elements. [0056]

Claims (17)

We claim:
1. A compressor and driving motor assembly, in which the motor comprises a rotor and a stator assembly, and the compressor comprises a main body which supports a drive shaft, the rotor being mounted directly on the drive shaft, in which the drive shaft acts as a cantilever supporting the rotor.
2. An assembly according to claim 1 without a bearing acting to support the rotor at a distance from the main body of the compressor.
3. An assembly according to claim 1, in which the motor is a hybrid permanent magnet motor.
4. An assembly according to claim 1, in which the rotor is shaped so as to have a central longitudinal aperture adapted to fit to a corresponding tapered portion of the drive shaft.
5. An assembly according to claim 1, in which the compressor has a housing, and the stator assembly is connected to the housing of the compressor.
6. An assembly according to claim 5, in which the stator assembly is directly connected to the housing.
7. An assembly according to claim 5, in which the stator assembly is connected to the housing by way of an adapter flange.
8. An assembly according to claim 5, in which the compressor is an air compressor.
9. An assembly according to claim 5, in which the compressor is a rotary screw compressor.
10. A rotary screw air compressor and driving motor assembly, the driving motor being a hybrid permanent magnet motor.
11. An assembly according to claim 10, in which the compressor is an air compressor.
12. An assembly according to claim 10, in which the compressor is a rotary screw compressor.
13. An assembly according to claim 10, in which the motor is a fixed speed motor.
14. An assembly according to claim 10, in which the motor is a variable speed motor.
15. An assembly according to claim 10, in which the compressor is of flooded type.
16. An assembly according to claim 10, in which the compressor is of oil-free type.
17. An assembly according to claim 10, in which the motor comprises a rotor which is mounted directly on to a drive shaft of the compressor.
US09/995,052 2000-12-21 2001-11-27 Compressor and driving motor assembly Abandoned US20020079764A1 (en)

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US20060250105A1 (en) * 2005-05-06 2006-11-09 York International Corporation Variable speed drive for a chiller system with a switched reluctance motor
US20070059186A1 (en) * 2001-04-30 2007-03-15 Black & Decker Inc. Pneumatic compressor
US20070241627A1 (en) * 2006-04-12 2007-10-18 Sullair Corporation Lubricant cooled integrated motor/compressor design
US20080181794A1 (en) * 2007-01-26 2008-07-31 Steinfels Craig R Mobile pneumatic compressor
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Citations (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848422A (en) * 1972-04-27 1974-11-19 Svenska Rotor Maskiner Ab Refrigeration plants
US3922114A (en) * 1974-07-19 1975-11-25 Dunham Bush Inc Hermetic rotary helical screw compressor with improved oil management
US4079287A (en) * 1975-09-25 1978-03-14 General Electric Company Fluorescent lamp construction utilizing a mixture of two phosphor materials
US4514991A (en) * 1983-10-17 1985-05-07 Carrier Corporation Variable speed drive motor system with inverter control
US4536791A (en) * 1980-03-31 1985-08-20 Tocom, Inc. Addressable cable television control system with video format data transmission
US4547135A (en) * 1982-12-11 1985-10-15 ALLWEILER AG Aktiengesellschaft Motor-pump unit
US4694490A (en) * 1981-11-03 1987-09-15 Harvey John C Signal processing apparatus and methods
US4965825A (en) * 1981-11-03 1990-10-23 The Personalized Mass Media Corporation Signal processing apparatus and methods
US5096389A (en) * 1990-06-18 1992-03-17 Dean Pihlstrom, Inc. Compressed air foam discharging apparatus
US5216308A (en) * 1989-05-25 1993-06-01 Avcon-Advanced Controls Technology, Inc. Magnetic bearing structure providing radial, axial and moment load bearing support for a rotatable shaft
US5217359A (en) * 1989-11-02 1993-06-08 Matsushita Electric Industrial Co., Ltd. Scroll compressor with regulated oil flow to the back pressure chamber
US5222874A (en) * 1991-01-09 1993-06-29 Sullair Corporation Lubricant cooled electric drive motor for a compressor
US5246349A (en) * 1991-03-18 1993-09-21 Sullair Corporation Variable reluctance electric motor driven vacuum pump
US5302300A (en) * 1993-04-05 1994-04-12 Ingersoll-Rand Company Method and apparatus for separating water from a condensate mixture in a compressed air system
US5382833A (en) * 1991-03-01 1995-01-17 Kaethe Hagemeier Current generator with core cooling
US5413467A (en) * 1991-01-24 1995-05-09 Hitachi, Ltd. Oil-free type screw compressor device
US5589892A (en) * 1993-09-09 1996-12-31 Knee; Robert A. Electronic television program guide schedule system and method with data feed access
US5600364A (en) * 1992-12-09 1997-02-04 Discovery Communications, Inc. Network controller for cable television delivery systems
US5659350A (en) * 1992-12-09 1997-08-19 Discovery Communications, Inc. Operations center for a television program packaging and delivery system
US5686699A (en) * 1995-10-10 1997-11-11 Acc Microelectronics Corporation Semiconductor board providing high signal pin utilization
US5734444A (en) * 1994-12-21 1998-03-31 Sony Corporation Broadcast receiving apparatus that automatically records frequency watched programs
US5798785A (en) * 1992-12-09 1998-08-25 Discovery Communications, Inc. Terminal for suggesting programs offered on a television program delivery system
US5805763A (en) * 1995-05-05 1998-09-08 Microsoft Corporation System and method for automatically recording programs in an interactive viewing system
US5846062A (en) * 1996-06-03 1998-12-08 Ebara Corporation Two stage screw type vacuum pump with motor in-between the stages
US5872588A (en) * 1995-12-06 1999-02-16 International Business Machines Corporation Method and apparatus for monitoring audio-visual materials presented to a subscriber
US5904473A (en) * 1995-06-21 1999-05-18 Sihi Industry Consult Gmbh Vacuum pump
US5912516A (en) * 1997-04-02 1999-06-15 Aisin Seiki Kabushiki Kaisha High speed alternator/motor
US5924855A (en) * 1995-06-21 1999-07-20 Sihi Industry Consult Gmbh Screw compressor with cooling
US5947854A (en) * 1997-05-08 1999-09-07 Worksmart Energy Enterprises, Inc. Combined variable-speed drive and speed reducer for pumps and fans
US6003324A (en) * 1997-07-11 1999-12-21 Shaw; David N. Multi-rotor helical screw compressor with unloading
US6177931B1 (en) * 1996-12-19 2001-01-23 Index Systems, Inc. Systems and methods for displaying and recording control interface with television programs, video, advertising information and program scheduling information
US6419465B1 (en) * 2000-08-11 2002-07-16 Westinghouse Air Brake Technologies Corporation Shaft extension for use with outboard bearing designs
US6447267B1 (en) * 2000-06-14 2002-09-10 Wabtec Corporation Locomotive air compressor with motor supported by outside bearing
US6450777B2 (en) * 1995-07-25 2002-09-17 Thomas Industries, Inc. Fluid pumping apparatus

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE124453C (en)
US2305125A (en) * 1939-03-25 1942-12-15 Weston Electrical Instr Corp Tachometer
US2493102A (en) * 1946-12-26 1950-01-03 Keefe And Merritt Company O Rotor for electric machines and method of making the same
AT246190B (en) * 1964-05-12 1966-04-12 Raimund Culk Refrigeration compressor
US3391291A (en) * 1965-08-06 1968-07-02 Eugene G. Benson Electric motor construction
FR1538595A (en) * 1967-07-27 1968-09-06 Compteurs Comp D Sealed drive device of a rotary machine
DE1613572A1 (en) * 1967-08-01 1971-01-28 Bosch Gmbh Robert Claw-pole type alternator
US3694661A (en) * 1968-10-18 1972-09-26 Hitachi Ltd Ac generator directly coupled to an internal combustion engine
US4079278A (en) 1975-09-04 1978-03-14 Torque Systems Incorporated Hybrid field permanent magnet motor
DD124453A1 (en) * 1976-03-25 1977-02-23
DE2816180A1 (en) * 1978-04-14 1979-10-25 Bosch Gmbh Robert EXTERNALLY MOUNTED GENERATOR
US4473752A (en) * 1982-05-27 1984-09-25 Lockheed Corporation Aircraft engine starting with synchronous ac generator
US4830412A (en) 1987-10-26 1989-05-16 Sundstrand Corporation Starting system and method using a hybrid permanent magnet/induction machine
JPH05223083A (en) * 1992-02-10 1993-08-31 Hitachi Ltd Refrigerant compression type refrigerating device lubricating compressor with ultra-fine grain
GB2291274B (en) 1994-07-04 1999-01-20 Ching Chuen Chan Improvement in permanent magnet hybrid brushless dc motor
US5642992A (en) * 1995-10-30 1997-07-01 Shaw; David N. Multi-rotor helical screw compressor
FR2742936B1 (en) 1995-12-22 1998-02-13 Leroy Somer Moteurs SYNCHRONOUS ELECTRIC MACHINE WITH PERMANENT MAGNETS SUITABLE FOR OPERATING AT CONSTANT POWER ON A WIDE RANGE OF SPEED
JP3499110B2 (en) * 1997-08-11 2004-02-23 株式会社神戸製鋼所 Oil-cooled screw compressor
US6193473B1 (en) 1999-03-31 2001-02-27 Cooper Turbocompressor, Inc. Direct drive compressor assembly with switched reluctance motor drive
JP2001050161A (en) 1999-08-05 2001-02-23 Ebara Corp Gas transfer machine
ITBO20000669A1 (en) 2000-11-17 2002-05-17 Fini Elettrocostruzioni Meccan SCREW COMPRESSOR
GB2376505B (en) * 2001-06-11 2003-12-17 Compair Uk Ltd Improvements in screw compressors

Patent Citations (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848422A (en) * 1972-04-27 1974-11-19 Svenska Rotor Maskiner Ab Refrigeration plants
US3922114A (en) * 1974-07-19 1975-11-25 Dunham Bush Inc Hermetic rotary helical screw compressor with improved oil management
US4079287A (en) * 1975-09-25 1978-03-14 General Electric Company Fluorescent lamp construction utilizing a mixture of two phosphor materials
US4536791A (en) * 1980-03-31 1985-08-20 Tocom, Inc. Addressable cable television control system with video format data transmission
US4694490A (en) * 1981-11-03 1987-09-15 Harvey John C Signal processing apparatus and methods
US4965825A (en) * 1981-11-03 1990-10-23 The Personalized Mass Media Corporation Signal processing apparatus and methods
US4547135A (en) * 1982-12-11 1985-10-15 ALLWEILER AG Aktiengesellschaft Motor-pump unit
US4514991A (en) * 1983-10-17 1985-05-07 Carrier Corporation Variable speed drive motor system with inverter control
US5216308A (en) * 1989-05-25 1993-06-01 Avcon-Advanced Controls Technology, Inc. Magnetic bearing structure providing radial, axial and moment load bearing support for a rotatable shaft
US5217359A (en) * 1989-11-02 1993-06-08 Matsushita Electric Industrial Co., Ltd. Scroll compressor with regulated oil flow to the back pressure chamber
US5096389A (en) * 1990-06-18 1992-03-17 Dean Pihlstrom, Inc. Compressed air foam discharging apparatus
US5222874A (en) * 1991-01-09 1993-06-29 Sullair Corporation Lubricant cooled electric drive motor for a compressor
US5413467A (en) * 1991-01-24 1995-05-09 Hitachi, Ltd. Oil-free type screw compressor device
US5382833A (en) * 1991-03-01 1995-01-17 Kaethe Hagemeier Current generator with core cooling
US5246349A (en) * 1991-03-18 1993-09-21 Sullair Corporation Variable reluctance electric motor driven vacuum pump
US5798785A (en) * 1992-12-09 1998-08-25 Discovery Communications, Inc. Terminal for suggesting programs offered on a television program delivery system
US5600364A (en) * 1992-12-09 1997-02-04 Discovery Communications, Inc. Network controller for cable television delivery systems
US5659350A (en) * 1992-12-09 1997-08-19 Discovery Communications, Inc. Operations center for a television program packaging and delivery system
US5302300A (en) * 1993-04-05 1994-04-12 Ingersoll-Rand Company Method and apparatus for separating water from a condensate mixture in a compressed air system
US5589892A (en) * 1993-09-09 1996-12-31 Knee; Robert A. Electronic television program guide schedule system and method with data feed access
US5734444A (en) * 1994-12-21 1998-03-31 Sony Corporation Broadcast receiving apparatus that automatically records frequency watched programs
US5805763A (en) * 1995-05-05 1998-09-08 Microsoft Corporation System and method for automatically recording programs in an interactive viewing system
US5904473A (en) * 1995-06-21 1999-05-18 Sihi Industry Consult Gmbh Vacuum pump
US5924855A (en) * 1995-06-21 1999-07-20 Sihi Industry Consult Gmbh Screw compressor with cooling
US6450777B2 (en) * 1995-07-25 2002-09-17 Thomas Industries, Inc. Fluid pumping apparatus
US5686699A (en) * 1995-10-10 1997-11-11 Acc Microelectronics Corporation Semiconductor board providing high signal pin utilization
US5872588A (en) * 1995-12-06 1999-02-16 International Business Machines Corporation Method and apparatus for monitoring audio-visual materials presented to a subscriber
US5846062A (en) * 1996-06-03 1998-12-08 Ebara Corporation Two stage screw type vacuum pump with motor in-between the stages
US6177931B1 (en) * 1996-12-19 2001-01-23 Index Systems, Inc. Systems and methods for displaying and recording control interface with television programs, video, advertising information and program scheduling information
US5912516A (en) * 1997-04-02 1999-06-15 Aisin Seiki Kabushiki Kaisha High speed alternator/motor
US5947854A (en) * 1997-05-08 1999-09-07 Worksmart Energy Enterprises, Inc. Combined variable-speed drive and speed reducer for pumps and fans
US6003324A (en) * 1997-07-11 1999-12-21 Shaw; David N. Multi-rotor helical screw compressor with unloading
US6447267B1 (en) * 2000-06-14 2002-09-10 Wabtec Corporation Locomotive air compressor with motor supported by outside bearing
US6419465B1 (en) * 2000-08-11 2002-07-16 Westinghouse Air Brake Technologies Corporation Shaft extension for use with outboard bearing designs

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7494035B2 (en) 2001-04-30 2009-02-24 Black & Decker Inc. Pneumatic compressor
US20070059186A1 (en) * 2001-04-30 2007-03-15 Black & Decker Inc. Pneumatic compressor
US20020158102A1 (en) * 2001-04-30 2002-10-31 Patton James Andrew Portable pneumatic tool powered by an onboard compressor
US7225959B2 (en) 2001-04-30 2007-06-05 Black & Decker, Inc. Portable, battery-powered air compressor for a pneumatic tool system
US7478574B2 (en) * 2005-04-26 2009-01-20 Igarashi Electric Works, Ltd. Electric actuator
US20060243078A1 (en) * 2005-04-26 2006-11-02 Naoto Sesita Electric actuator
US7202626B2 (en) 2005-05-06 2007-04-10 York International Corporation Variable speed drive for a chiller system with a switched reluctance motor
US20060250105A1 (en) * 2005-05-06 2006-11-09 York International Corporation Variable speed drive for a chiller system with a switched reluctance motor
US20070241627A1 (en) * 2006-04-12 2007-10-18 Sullair Corporation Lubricant cooled integrated motor/compressor design
US20080181794A1 (en) * 2007-01-26 2008-07-31 Steinfels Craig R Mobile pneumatic compressor
US20110203276A1 (en) * 2008-09-18 2011-08-25 Boehringer Ingelheim International Gmbh Method And Device For Tracking The Degradation Of Insulators In A Rotary Machine
US8766645B2 (en) * 2008-09-18 2014-07-01 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method and device for tracking the degradation of insulators in a rotary machine
US9856866B2 (en) 2011-01-28 2018-01-02 Wabtec Holding Corp. Oil-free air compressor for rail vehicles
US20140015361A1 (en) * 2012-07-16 2014-01-16 Solar Turbines Incorporated Lamination sleeve with an axial hydraulic fitting port
US9334898B2 (en) * 2012-07-16 2016-05-10 Solar Turbines Incorporated Lamination sleeve with an axial hydraulic fitting port
US20170009774A1 (en) * 2015-07-08 2017-01-12 Dag O. Calafell Modular Configurable Compression Systems and Methods

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US20060056996A1 (en) 2006-03-16
US7573165B2 (en) 2009-08-11
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EP1217214B1 (en) 2008-08-06
GB2370320A (en) 2002-06-26
EP1217214A3 (en) 2003-04-09
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MXPA02000094A (en) 2005-04-19
DE60135199D1 (en) 2008-09-18

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