US20110142706A1 - Noiseless pressure blower - Google Patents

Noiseless pressure blower Download PDF

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Publication number
US20110142706A1
US20110142706A1 US13/057,357 US200913057357A US2011142706A1 US 20110142706 A1 US20110142706 A1 US 20110142706A1 US 200913057357 A US200913057357 A US 200913057357A US 2011142706 A1 US2011142706 A1 US 2011142706A1
Authority
US
United States
Prior art keywords
pressure
control
rotating shaft
noiseless
main body
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.)
Abandoned
Application number
US13/057,357
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English (en)
Inventor
Gumtaek Hwang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of US20110142706A1 publication Critical patent/US20110142706A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • 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
    • F04C18/24—Rotary-piston pumps specially adapted for elastic fluids of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions
    • 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
    • F04C29/06—Silencing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid 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
    • F04C2250/00—Geometry
    • F04C2250/10—Geometry of the inlet or outlet
    • F04C2250/101—Geometry of the inlet or outlet of the inlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2210/00—Working fluids
    • F05D2210/10—Kind or type
    • F05D2210/12—Kind or type gaseous, i.e. compressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/40—Transmission of power
    • F05D2260/402—Transmission of power through friction drives
    • F05D2260/4021—Transmission of power through friction drives through belt drives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/40—Transmission of power
    • F05D2260/403—Transmission of power through the shape of the drive components
    • F05D2260/4031—Transmission of power through the shape of the drive components as in toothed gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/96—Preventing, counteracting or reducing vibration or noise
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps

Definitions

  • the present invention relates generally to noiseless pressure blowers and, more particularly, to a noiseless pressure blower which is configured in such a way that a pressing member and a control member rotating in contact with the pressing member reliably convey air, so that noise can be prevented from being generated and air can be reliably conveyed even in places like a duct, where resistance occurs.
  • blowers are devices to increase the intensity of gas flow, particularly, air flow.
  • Blowers are classified into turbo-blowers and displacement blowers.
  • Turbo-blowers are classified into axial-flow bowers that generate energy using dynamic lift of blades, which is generated by rotating an impeller, and centrifugal blowers that generate energy using centrifugal force.
  • a centrifugal multi-blade blower which is a representative example of such blowers includes a cylindrical main body. An inlet port is formed on the central portion of one surface of the main body, and an outlet port is formed at a predetermined position on the circumferential surface of the main body.
  • the centrifugal multi-blade blower further includes a scroll, an impeller and blades which rotate around the central axis of the cylindrical main body. The blades are inclined in one direction, and when they rotate, air is sucked into the central portion of the cylindrical impeller including the blades and then discharged, under pressure, out of the blower.
  • blowers are used in factories, workshops, basements, restaurants, kitchens, etc. where ventilation is required.
  • blowers rotate at a high speed, thus generating noise attributable to air friction.
  • no-load operation is caused by resistance of the duct, and noise is generated by vortex flow, resulting in poor ventilation.
  • an object of the present invention is to provide a noiseless pressure blower which minimizes air friction to prevent noise and reliably conveys air even in places like a duct, where resistance occurs.
  • the present invention provides a noiseless pressure blower, including: a main body having a hollow portion, an inlet port for sucking in a fluid, and an outlet port for discharging the fluid sucked in; a pressing member installed in the hollow portion of the main body, the pressing member rotating to suck in the fluid from the inlet port; a control member installed in the hollow portion of the main body, the control member rotating in contact with the pressure member to prevent the sucked in fluid from flowing to the inlet port; and an interlocking means for transmitting rotational force generated by a motor to the pressure member and the control member so that the pressure member and the control member rotate at a same rpm.
  • the main body may have a shape in which two cylinders communicate with each other via side surfaces thereof.
  • the pressure member may include a pressure rotating shaft rotating by the interlocking means, and a spiral pressure plate provided on the pressure rotating shaft.
  • the control member may include a control rotating shaft rotating by the interlocking means, and a control body provided on the control rotating shaft. The control body may rotate in linear contact with the pressure plate.
  • the pressing member and the control member may be alternately installed in the main body.
  • an edge of the inlet port may have a sawtooth shape.
  • the interlocking means may comprise a gear unit.
  • the main body may include a cylinder having a hollow portion therein, and a compartment communicating with the cylinder via a side surface thereof.
  • the pressure member may be installed in the cylinder.
  • the pressure member may include a pressure rotating shaft rotating by the interlocking means, and two spiral blades provided on the pressure rotating shaft.
  • the control member may include a control rotating shaft installed in the compartment, the control rotating shaft rotating by the interlocking means, and a disk-shaped control plate provided on the control rotating shaft, with a slot formed through the control plate, the slot extending a predetermined length in a radial direction of the control plate, such that the blades pass through the slot when the blades and the control plate rotate.
  • the cylinder of the main body may comprise two cylinders communicating with the compartment via opposite side surfaces thereof.
  • the control member may be installed in the compartment, and the pressing member may comprise two pressing members installed in the respective two cylinders.
  • the interlocking means may comprise a gear unit or a timing belt.
  • a noiseless pressure blower rotates at a comparatively low speed, so that noise can be prevented from being generated. Furthermore, because the blower is configured in such a way that a pressing member and a control member suck in air and discharge the air, air can be reliably conveyed even in places like a duct, where resistance occurs. In addition, the present invention can provide superior ventilation effect, even in a place where the amount of sucked in air is comparatively small; for example, due to an exit door. Moreover, the noiseless pressure blower of the present invention can continuously convey a constant quantity of fluid, so that it can be used in various kinds of devices.
  • FIG. 1 is a perspective view of a noiseless pressure blower, according to a first embodiment of the present invention
  • FIG. 2 is a plan view of the noiseless pressure blower of FIG. 1 ;
  • FIG. 3 is a sectional view of the noiseless pressure blower of FIG. 1 ;
  • FIG. 4 is an exploded perspective view of a critical part of the noiseless pressure blower of FIG. 1 ;
  • FIG. 5 is a view illustrating pressing members and a control member
  • FIG. 6 is of views illustrating the operation of the noiseless pressure blower of FIG. 1 ;
  • FIG. 7 is a perspective view of a noiseless pressure blower, according to a second embodiment of the present invention.
  • FIG. 8 is an exploded perspective view of the noiseless pressure blower of FIG. 7 ;
  • FIG. 9 is a perspective view of a noiseless pressure blower, according to a third embodiment of the present invention.
  • FIG. 10 is a view showing the construction of the noiseless pressure blower of FIG. 9 ;
  • FIG. 11 is an exploded perspective view of the noiseless pressure blower of FIG. 9 ;
  • FIG. 12 is a perspective view of a pressing member installed in the noiseless pressure blower of FIG. 9 ;
  • FIG. 14 is of views illustrating the operation of the noiseless pressure blower of FIG. 9 ;
  • FIG. 15 is a view illustrating the flow of air in the noiseless pressure blower of FIG. 9 ;
  • FIG. 17 is an exploded perspective view of the noiseless pressure blower of FIG. 16 .
  • FIG. 1 is a perspective view of a noiseless pressure blower, according to a first embodiment of the present invention.
  • FIGS. 2 and 3 respectively are a plan view and a sectional view showing the noiseless pressure blower of FIG. 1 .
  • FIG. 4 is an exploded perspective view of a critical part of the noiseless pressure blower.
  • the noiseless pressure blower designated by the reference numeral 1 includes a main body 10 , pressing members 20 and a control member 30 .
  • the main body 10 has a shape in which three cylinders 13 communicates with each other via the side surfaces thereof.
  • An inlet port 11 and an outlet port 12 are formed through the side surface of each of the two outer cylinders 13 .
  • the main body 10 is contained in a casing 5 .
  • the control member 30 is installed in the cylinder 13 that is located in the medial portion of the main body 10 .
  • the pressing members 20 are installed in the respective outer cylinders 13 .
  • rotational force generated by a motor 40 is transmitted to the pressing members 20 and the control member 30 via a gear unit 50 .
  • the control member 30 and the pressing members 20 are rotated at the same speed in the opposite directions to each other by the gear unit 50 .
  • each inlet port 11 and the outlet port 12 are formed in each of the cylinders 13 of the main body 10 that contain the respective pressing members 20 therein. As shown in FIG. 4 , each inlet port 11 has a sawtooth edge so that noise generated at an initial stage of operation of sucking in air can be mitigated.
  • the two inlet ports 11 are located at opposite positions to each other, and the two outlet ports 12 are also located at opposite positions to each other.
  • the inlet ports 11 and the outlet ports 12 which are located at different positions suck in air in different directions and discharge air in different directions. Therefore, the inlet ports 11 which are provided at opposite sides are connected to each other by a communicating member 70 , and the outlet ports 12 are also connected to each other by a communicating member 70 .
  • the communicating members 70 are provided between the main body 10 and the casing 5 . As such, because the inlet ports 11 are connected to each other by the corresponding communicating member 70 and the outlet ports 12 are connected to each other by the corresponding communicating member 70 , the blower can blow from one side to the other side.
  • Each pressing member 20 includes a pressure rotating shaft 21 which is rotated by the gear unit 50 , and a pressure plate 23 which is provided on the pressure rotating shaft 21 .
  • the pressure plate 23 has a spiral shape and a semicircular cross-section.
  • the pressure plate 23 comprises a pair of pressure plates 23 which are respectively fastened on the opposite sides of the pressure rotating shaft 21 .
  • the control member 30 includes a control rotating shaft 31 which is rotated by the gear unit 50 , and a control body 33 , which is provided on the control rotating shaft 31 .
  • the control body 33 rotates in close contact with the pressure plate 23 .
  • the control body 33 has a spiral shape. A hollow portion is formed in the control body 33 so that it has a predetermined volume.
  • the pressing members 20 and the control member 30 rotate at the same rpm.
  • the pressure plates 23 and the control body 33 come into line contact with each other with respect to the longitudinal direction while they rotate. Hence, because the control body 33 and the pressure plates 23 rotate in contact with each other, there is no space between the pressure plates and the control body 33 so that the flow of air therebetween is interrupted.
  • the pressing members 20 and the control member 30 which rotate at the same rpm in opposite directions come into line contact with each other. Thus, air is interrupted from flowing between the pressing members 20 and the control member 30 .
  • FIGS. 7 and 8 are views illustrating a noiseless pressure blower, according to a second embodiment of the present invention.
  • the second embodiment includes a single pressing member 20 and a single control member 30 .
  • the construction of each component and the operation of the blower are similar to or the same as those of the first embodiment, so detailed explanation thereof will be omitted.
  • the blower may be configured in such a way that that two or more control members 30 and two or more pressing members 20 are connected to each other in the same manner as that of the first embodiment, so further explanation thereof will also be omitted.
  • FIGS. 9 through 15 illustrate a noiseless pressure blower, according to a third embodiment of the present invention.
  • the blower according to the third embodiment also includes a main body 10 , pressing members 20 and a control member 30 .
  • the main body 10 includes two cylinders 13 which are located at positions spaced apart from each other.
  • a compartment 15 is formed between the two cylinders 13 so that the two cylinders 13 communicate with each other through the compartment 15 .
  • the main body 10 is covered with a casing 5 to have the shape of FIG. 9 .
  • each pressing member 20 includes a pressure rotating shaft 21 which is rotated by a motor 40 , and two spiral blades 25 which are provided on the pressure rotating shaft 21 .
  • the pressing members 20 are installed in the respective cylinders 13 .
  • the control member 30 includes a control rotating shaft 31 which is rotated by the motor 40 and installed in the compartment 15 , and a control plate 35 having a disk shape.
  • Two slots 37 are formed in the control plate 35 and extend predetermined lengths in the radial direction of the control plate 35 .
  • the pressing members 20 are installed in the respective cylinders 13 , and the control member 30 is installed in the compartment 15 .
  • the control rotating shaft 31 is oriented in the horizontal direction, and the pressure rotating shafts 21 are orientated in the vertical direction.
  • each blade 25 of the pressing members 20 pass through the two slots 37 formed in the control plate 35 .
  • each blade 25 has a bent spiral shape so that it can be inserted into and pass through the corresponding slot 37 of the control plate 35 , which is rotating.
  • control member 30 and the pressing members 20 rotate at the same rpm.
  • the blades 25 of the pressing members 20 which are rotating, pass through the corresponding slots 37 of the control plate 35 , as shown in FIG. 14 .
  • the disk-shaped control plate 35 can prevent air from flowing in an incorrect direction despite allowing the blades 25 of the pressing members 20 to pass along the slots 37 , as shown in FIG. 14 .
  • the blower blows air following this principle.
  • FIGS. 16 and 17 illustrate a noiseless pressure blower, according to a fourth embodiment of the present invention.
  • the noiseless pressure blower of the fourth embodiment includes a single control member 30 and a single pressing member 20 rather than having two pressing members 20 .
  • the control member 30 is connected to the pressing member 20 by a gear unit 50 or a timing belt 60 .
  • the operation of the blower of the fourth embodiment having such construction is the same as that of the prior embodiments, so further explanation thereof will be omitted.
  • the noiseless pressure blower according to the present invention can be used not only as a device to blow air but also as a pump to move fluid, such as water or chemicals.
  • a blower rotates at a comparatively low speed, so that noise can be prevented from being generated. Furthermore, because the blower is configured so that a pressing member and a control member suck in air and discharge the air, air can be reliably conveyed even in a place, such as in a duct, where resistance occurs.
  • the noiseless pressure blower of the present invention can continuously convey a constant quantity of fluid, so that it can be used as a pump.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US13/057,357 2008-08-04 2009-07-31 Noiseless pressure blower Abandoned US20110142706A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR20080076119 2008-08-04
KR10-2008-0076119 2008-08-04
PCT/KR2009/004284 WO2010016688A2 (ko) 2008-08-04 2009-07-31 무소음 가압 송풍기

Publications (1)

Publication Number Publication Date
US20110142706A1 true US20110142706A1 (en) 2011-06-16

Family

ID=41664072

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/057,357 Abandoned US20110142706A1 (en) 2008-08-04 2009-07-31 Noiseless pressure blower

Country Status (6)

Country Link
US (1) US20110142706A1 (ko)
EP (1) EP2322806A4 (ko)
JP (1) JP5272077B2 (ko)
KR (1) KR100966898B1 (ko)
CN (1) CN102144099A (ko)
WO (1) WO2010016688A2 (ko)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109625261B (zh) * 2017-10-06 2023-09-22 松下电器（美国）知识产权公司 无人飞行器

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US1071342A (en) * 1913-08-26 Edgar F Prall Gas-engine.
US1193808A (en) * 1916-08-08 Canada
US2198786A (en) * 1935-02-07 1940-04-30 Imo Ind Stockholm Ab Power transmission to or from a fluid
US2232702A (en) * 1939-03-21 1941-02-25 Holzknecht Felix Rotary steam engine
US2437658A (en) * 1944-01-21 1948-03-09 Alfred O Williams Interengaging impeller type blower or pump
US2471813A (en) * 1944-09-28 1949-05-31 Chrysler Corp Injection molding apparatus
US3269328A (en) * 1964-09-28 1966-08-30 Laval Turbine Screw pumps or motors
US3438569A (en) * 1967-02-28 1969-04-15 Cornell Aeronautical Labor Inc Rotary wave compressors and the like
US3519375A (en) * 1968-06-18 1970-07-07 Laval Turbine Screw pumps
US3726616A (en) * 1971-01-11 1973-04-10 Univ Northwestern Fluid actuated energy translating device
US4152100A (en) * 1975-06-24 1979-05-01 Compair Industrial Ltd. Rotary piston compressor having pistons rotating in the same direction
US4242067A (en) * 1977-09-15 1980-12-30 Imo-Industri Aktiebolag Hydraulic screw machine with balance plunger
GB2065776A (en) * 1979-12-21 1981-07-01 Pfeiffer Vakuumtechnik Rotary-piston Fluid-machines
US4580953A (en) * 1983-07-20 1986-04-08 Imo Aktiebolag Screw pump including a fluid bypass regulating device
US5080568A (en) * 1990-09-20 1992-01-14 Bernard Zimmern Positive displacement rotary machine

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DE617955C (de) * 1935-08-29 Fried Krupp Germaniawerft Akt Drehkolbenverdichter
DE567478C (de) * 1931-04-25 1933-01-04 Fried Krupp Germaniawerft Akt Drehkolbenverdichter
JPS55139991A (en) * 1979-04-19 1980-11-01 Goro Kihara Rotary piston compressor with stroke-change mechanism
US5039289A (en) * 1983-11-07 1991-08-13 Wankel Gmbh Rotary piston blower having piston lobe portions shaped to avoid compression pockets
JPH05172094A (ja) * 1991-05-18 1993-07-09 Usui Internatl Ind Co Ltd モーター・ファン装置
JP3965756B2 (ja) * 1998-02-03 2007-08-29 松下電器産業株式会社 遠心ポンプ
JP2001050197A (ja) * 1999-08-03 2001-02-23 Shizuo Hikita 食品調製機用の送風機
JP3629702B2 (ja) * 2001-12-21 2005-03-16 ダイキン工業株式会社 送風機
JP2004003496A (ja) * 2003-05-07 2004-01-08 Hisao Kitayama 二対三型二軸式回転ポンプ
US20050039289A1 (en) * 2003-08-20 2005-02-24 Buxton Richard Street sweeper guide bar

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1071342A (en) * 1913-08-26 Edgar F Prall Gas-engine.
US1193808A (en) * 1916-08-08 Canada
US960994A (en) * 1909-12-20 1910-06-07 Newell H Motsinger Rotary engine.
US2198786A (en) * 1935-02-07 1940-04-30 Imo Ind Stockholm Ab Power transmission to or from a fluid
US2232702A (en) * 1939-03-21 1941-02-25 Holzknecht Felix Rotary steam engine
US2437658A (en) * 1944-01-21 1948-03-09 Alfred O Williams Interengaging impeller type blower or pump
US2471813A (en) * 1944-09-28 1949-05-31 Chrysler Corp Injection molding apparatus
US3269328A (en) * 1964-09-28 1966-08-30 Laval Turbine Screw pumps or motors
US3438569A (en) * 1967-02-28 1969-04-15 Cornell Aeronautical Labor Inc Rotary wave compressors and the like
US3519375A (en) * 1968-06-18 1970-07-07 Laval Turbine Screw pumps
US3726616A (en) * 1971-01-11 1973-04-10 Univ Northwestern Fluid actuated energy translating device
US4152100A (en) * 1975-06-24 1979-05-01 Compair Industrial Ltd. Rotary piston compressor having pistons rotating in the same direction
US4242067A (en) * 1977-09-15 1980-12-30 Imo-Industri Aktiebolag Hydraulic screw machine with balance plunger
GB2065776A (en) * 1979-12-21 1981-07-01 Pfeiffer Vakuumtechnik Rotary-piston Fluid-machines
US4580953A (en) * 1983-07-20 1986-04-08 Imo Aktiebolag Screw pump including a fluid bypass regulating device
US5080568A (en) * 1990-09-20 1992-01-14 Bernard Zimmern Positive displacement rotary machine

Also Published As

Publication number Publication date
KR20100015285A (ko) 2010-02-12
WO2010016688A2 (ko) 2010-02-11
EP2322806A2 (en) 2011-05-18
KR100966898B1 (ko) 2010-06-30
JP2011530042A (ja) 2011-12-15
WO2010016688A3 (ko) 2010-04-22
JP5272077B2 (ja) 2013-08-28
EP2322806A4 (en) 2012-02-29
CN102144099A (zh) 2011-08-03

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