Sliding Vane Patents (Class 418/13)
  • Patent number: 10252364
    Abstract: A soldering apparatus which can keep an interior of a chamber at a specified vacuum pressure and can perform soldering in the chamber, the vacuum pressure of which is optimally adjusted, is provided with a chamber (40) in which a work (1) is solderable under vacuum environment, an operation part (21) that inputs and sets vacuum pressure in the chamber (40), a pump (23) that performs vacuum drawing on the interior of the chamber (40), a pressure sensor (24) that detects pressure in the chamber (40), and a control portion (61) that adjusts the set vacuum pressure in the chamber (40) based on a pressure detection signal (S24) output from the pressure sensor (24), and keeps the set vacuum pressure for a predetermined period of time, as shown in FIG. 4.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: April 9, 2019
    Assignee: Senju Metal Industry Co., Ltd.
    Inventors: Tsutomu Hiyama, Hiroyuki Inoue, Shunsuke Kimoto
  • Patent number: 10221808
    Abstract: A double acting, miller cycle, reciprocating piston with dual rotary displacer, stirling engine is provided. Configurable as a heat pump, a heat engine, or as a combination with one side driving the other, the engine is completely closed, sealed and pressurized with the piston ring as the only internal seal. A miller cycle is created by allowing transfer of the working fluid (typically hydrogen gas) past the piston to balance working fluid pressure only at the extremes of the piston stroke. Two coordinated rotating displacers service opposite sides of one piston. Each displacer manages heat flow, according it its length and shape, through one side of the length of its encasing tube into and out of the working fluid through the other side of the length of its encasing tube. The dead space between the piston and the displacer holds regenerator material.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: March 5, 2019
    Inventor: Solar Miller
  • Patent number: 9394902
    Abstract: A fluid rotary machine includes first and second bodies and that are rotatable relative to each other. The second body is inside the first body to define a working fluid space there between. In addition, the machine includes a plurality of gates. Each gate 18 is supported by the first body and is movable in a radial direction with respect to the first and second bodies to extend into and retract from the working fluid space. The machine also includes a magnetic gate control system configured to exert control of the motion and/or position of the gates in the radial direction. The magnetic gate control system is a dispersed system including magnets or magnets and components made of ferromagnetic materials. The magnetic gate control system may be dispersed between the gates, and one or both of the bodies.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: July 19, 2016
    Assignee: GREYSTONE TECHNOLOGIES PTY. LTD.
    Inventor: Daryl Wheeler
  • Publication number: 20150037188
    Abstract: An improved vane pump assembly is provided. The vane pump assembly includes a housing with an open chamber that is circular in shape when viewed in cross-section and has an inner wall that surrounds the open chamber. A rotor is rotatably disposed in the open chamber of the housing. As with the open chamber, the rotor is circular in shape when viewed in cross-section and has a diameter. The rotor further has at least one through-passage which extends diametrically across the rotor. The rotor is positioned such that it has a center that is offset from a center of the circular open chamber of the housing.
    Type: Application
    Filed: August 5, 2014
    Publication date: February 5, 2015
    Inventor: Charles Tuckey
  • Publication number: 20140219845
    Abstract: Rotary systems are described, which can include at least one of compressors and vacuum pumps. Each rotary system includes a corresponding piston that rotates in an orbital motion around a respective eccentric of a shaft in order to either compress fluid or function as a vacuum pump. Multiple rotary systems can be executed on parallel on a single shaft such that these rotary systems are powered by a single motor. Various components of the rotary systems are coated with an abradable coating, which minimizes friction when these components come in contact with each other. The minimized friction minimizes the wear and tear of these components. Each rotary system can be lubricated by only the fluid being processed (for example, compressed or vacuumed) by that rotary system. The use of the fluid being processed for lubrication and the abradable coatings eliminate a need for another lubricant for lubricating the rotary system.
    Type: Application
    Filed: April 8, 2014
    Publication date: August 7, 2014
    Applicant: CAIRE INC.
    Inventors: Jason James Hugenroth, David Phillip Winter, Raziel Alon
  • Patent number: 8733316
    Abstract: The invention is an internal combustion engine converting the fuel/air mixture (17) to energy, comprising at least one engine having at least one engine cover (2), at least one external piston (5) having geared rotary ducts and providing the combustion and compression volumes inside said engine body (1), having fuel/air mixture (17) and exhaust gas (18) discharge openings (4.1), one internal piston (7) which rotates inside said internal piston space (6) and compresses the fuel/air mixture (17) sucked in through the suction opening (6.1) behind it and pumps this into the external piston inner space (4) and an external piston (5) rotating in the opposite direction.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: May 27, 2014
    Inventor: Yilmaz Yasar Tuncer
  • Publication number: 20140119968
    Abstract: A rotary compressor includes a compression unit that includes an annular cylinder including a cylinder inner wall, a suction port, and a vane groove, an end plate covering an end portion of the cylinder, an annular piston revolving in the cylinder to form an actuation chamber between the cylinder inner wall and the annular piston; and a vane protruding into the actuation chamber to divide the actuation chamber into a suction chamber and a compression chamber. A discharge port, which is provided in the end plate near the vane groove, communicates with the compression chamber, and a discharge groove, which is provided in the cylinder inner wall near the vane groove, communicates the compression chamber with the discharge port, and one side end portion of the discharge groove is located in an end portion of a wall portion of the vane groove on the compression chamber side.
    Type: Application
    Filed: October 28, 2013
    Publication date: May 1, 2014
    Applicant: FUJITSU GENERAL LIMITED
    Inventor: Taku MORISHITA
  • Publication number: 20140023538
    Abstract: Disclosed herein is a vane rotary compressor in which a fluid such as a refrigerant is compressed, with the volume of a compression chamber being reduced during the rotation of a rotor. In addition, disclosed is a vane rotary compressor having a configuration such that a space between a cylinder and a housing is divided into a high-pressure chamber, from which a high-pressure refrigerant is discharged, and an oil storage chamber in which oil included in the refrigerant is separated and stored, and having an oil decompression structure using a gap between a rotor and a head portion.
    Type: Application
    Filed: May 31, 2013
    Publication date: January 23, 2014
    Inventors: Jung Myung KWAK, Seon Joo HONG, Kweon Soo LIM, In Cheol SHIN
  • Patent number: 8398386
    Abstract: A 2 stage rotary compressor is provided that includes a hermetic container that defines an outward appearance of the compressor; a 2 stage compression assembly provided in the hermetic container, wherein a low pressure cylinder, a middle plate, and a high pressure cylinder are successively stacked from any one of upper and lower portions; and first discharge port that discharges refrigerant compressed in the low pressure cylinder, and having an inner volume equivalent to 0.5% to 2.5% of an inner volume of the low pressure cylinder. A valve is installed on or under the discharge port. When the valve is opened, compressed refrigerant is discharged through the discharge port. When the valve is closed, refrigerant remains in the discharge port as much as the volume of the discharge port. Accordingly, refrigerant remaining in the discharge port is re-expanded in the cylinder, to thereby cause a compression loss.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: March 19, 2013
    Assignee: LG Electronics Inc.
    Inventors: Jeong-Min Han, Sang-Myung Byun, Sang-Mo Kim, Joon-Hong Park
  • Patent number: 8303277
    Abstract: A blending pump assembly for accurately maintaining the proper ratio of two fluid components. Flow of a first fluid is utilized to drive a fluid motor, which in turn drives a pumping mechanism to inject a proportional amount of a second fluid into the flow of the first fluid. The fluid motor and pump are sized so that a predetermined ratio between the two fluids is maintained regardless of changes in pressure and flow rate of such first fluid.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: November 6, 2012
    Assignee: International Dispensing Corporation
    Inventor: Mitchell A. Friedman
  • Publication number: 20120263614
    Abstract: Housingless positive displacement pump assembly comprises one or more vane or gerotor type housingless positive displacement pump units, each comprising pump unit components. One or more retaining rods extend through axially aligned holes in a mounting flange at one end of the pump assembly and the pump unit components to hold the pump unit components in stacked relation to one another and connect the pump assembly to the mounting flange.
    Type: Application
    Filed: April 15, 2011
    Publication date: October 18, 2012
    Inventors: Michael A. Reighard, Daniel T. DePauw, David A. Sedlak
  • Publication number: 20120048230
    Abstract: Embodiments of rotary vane engines include rotors that rotate about an axis of rotation. The rotors can be moved in directions substantially perpendicular to the axis of rotation to vary expansion and/or compression ratios of the rotary vane engines. The ability to vary the expansion and/or compression ratios can facilitate optimization of the performance of the rotary vane engines as operating conditions vary.
    Type: Application
    Filed: December 23, 2008
    Publication date: March 1, 2012
    Inventor: David S. Darrow
  • Patent number: 7942000
    Abstract: A rotary vane engine system for using exhaust heat energy of a fuel-based heat engine. The heat engine includes a crankshaft being driven by a combustion cycle, and the heat engine generates exhaust gases by combustion. The system comprises an independent air system, wherein the independent air system contains air separate to the exhaust gases. A heat exchanger system is provided for transferring exhaust heat energy from the exhaust gases to the air contained in the independent air system to generate pressurized air. A rotary vane engine is also provided having a housing, a rotor contained within the housing and coupled to the crankshaft of the heat engine, and a plurality of vanes extending radially from the rotor. The pressurized air is expanded within the rotary vane engine for rotation of the rotor thereby providing drive to the crankshaft of the heat engine.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: May 17, 2011
    Assignee: Engine-Uity Limited
    Inventor: Barry T. Crate
  • Publication number: 20110058970
    Abstract: An aspect of the present disclosure involves a rotary compressor that is primarily optimized for use without the need for liquid lubricants, such as in the flow path of the fluid being compressed, and is efficient and quiet to use. The compressors described herein are efficient, run quietly, use less power, and last longer than those previously known in the art. The compressors are useful for medical applications and other clean gas applications, for instance, where lubricants could contaminate the fluid being compressed and/or increased noise and/or vibration may be problematic.
    Type: Application
    Filed: September 10, 2010
    Publication date: March 10, 2011
    Inventor: Jason James Hugenroth
  • Patent number: 7896627
    Abstract: A rotary type expander is provided with two rotary mechanism parts which differ from each other in displacement volume. The outflow side of the first rotary mechanism part of small displacement volume is fluidly connected to the inflow side of the second rotary mechanism part of large displacement volume. The processes by which the volume of a first low-pressure chamber in the first rotary mechanism part decreases and the volume of a second high-pressure chamber in the second rotary mechanism part increases are respectively in sync. Refrigerant at high pressure is first introduced into a first high-pressure chamber of the first rotary mechanism part. Thereafter, this high-pressure refrigerant passes through a communicating passage and then flows by way of the first low-pressure chamber into the second high-pressure chamber while expanding. The after-expansion refrigerant flows out to an outflow port from a second low-pressure chamber of the second rotary mechanism part.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: March 1, 2011
    Assignee: Daikin Industries, Ltd.
    Inventors: Masakazu Okamoto, Michio Moriwaki, Eiji Kumakura, Tetsuya Okamoto, Katsumi Sakitani
  • Patent number: 7866962
    Abstract: A two-stage rotary compressor having a compression mechanism including a single muffler housing member. The single muffler housing member at least partially defines an intermediate pressure discharge cavity and a discharge pressure discharge cavity. In one exemplary embodiment, the compression mechanism includes a cylinder block having a plurality of vanes positioned within slots formed in an inner cylindrical surface of the cylinder block. The slots are in fluid communication with the discharge pressure discharge cavity and receive discharge pressure working fluid to bias the vanes radially inwardly. In another exemplary embodiment, the cylinder block includes a plurality of passages for the delivery of working fluid to and from the cylinder block.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: January 11, 2011
    Assignee: Tecumseh Products Company
    Inventor: Joseph A. Newland
  • Patent number: 7854601
    Abstract: A lubricant-tight vane rotary vacuum pump includes at least one pump stage (17, 18) having a safety valve (3) for controlling gas flow to the pump stage, a lubricant pump, a lubricant reservoir (30) at least partially surrounding the pump stage housing (10, 40), and a hydraulic conduit (31) connecting the lubricant pump outlet (22) with the safety valve (3), with a pressurized lubricant flow through the hydraulic conduit (31) opening the safety valve (3), and a channel (32) branching from the hydraulic conduit (31) for delivering a pressurized lubricant into the lubricant reservoir (30).
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: December 21, 2010
    Assignee: Pfeiffer Vacuum GmbH
    Inventor: Juergen Wagner
  • Publication number: 20100242531
    Abstract: A multi-stage rotary-type fluid machine may be configured as what is called a two-stage rotary expander, in which a refrigerant expands in an expansion chamber having a first discharge side space (115b) of a first cylinder (105), a second suction side space (116a) of a second cylinder (106), and a communication hole (104a) for allowing communication between the two spaces (115b, 116a). The first cylinder (105) and the second cylinder (106) are partitioned by an intermediate plate (104). The communication hole (104a) is formed so as to penetrate through the intermediate plate (104). The opening shape and location of the communication hole (104a) are set so that direct blow-through of the refrigerant from a suction port (105b) to a discharge port (106b) cannot occur at any rotation angle of a shaft (103).
    Type: Application
    Filed: August 6, 2007
    Publication date: September 30, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Masaru Matsui, Hiroshi Hasegawa, Atsuo Okaichi, Takeshi Ogata, Masanobu Wada, Yasufumi Takashi
  • Publication number: 20100189584
    Abstract: The present invention provides a 2 stage rotary compressor including a hermetic container (101), an electric motor (110) provided in the hermetic container (101) and composed of an stator (111), a rotor (112) and a rotation axis (113), a low pressure compression assembly (120) including a low pressure cylinder (121), a low pressure eccentric portion (122) rotated along an inner diameter of the low pressure cylinder (121) due to rotation of the rotation axis (113), a low pressure roller (123) rotatably coupled to the outside of the low pressure eccentric portion (122), and a low pressure vane (124) for partitioning off an inner space of the low pressure cylinder (121), a high pressure compression (130) assembly including a high pressure cylinder (131), a high pressure eccentric portion (132) rotated along an inner diameter of the high pressure cylinder (130) due to rotation of the rotation axis (113) a high pressure roller (133) rotatably coupled to the outside of the high pressure eccentric portion (132), and
    Type: Application
    Filed: March 31, 2008
    Publication date: July 29, 2010
    Inventors: Sang-Myung Byun, Seung-Jun Lee, Yun-Hi Lee, Yoon-Sung Choi
  • Patent number: 7670119
    Abstract: The present invention provides a multistage vacuum pump comprising at least a low pressure first stage and at least a high pressure second stage. At least one of the stages has at least one suction inlet for admitting gas to be pumped, and at least one of the stages has at least one delivery outlet that is open to the outside for exhausting pumped gas. The first and second stages communicate with each other in order to pass gas from the first stage to the second stage. The first stage operates at a flow rate that is smaller than that of the second stage. For an oil-seal rotary vane positive-displacement pump, the oil is injected into the stage having the greater flow rate.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: March 2, 2010
    Assignee: ALCATEL
    Inventors: Pascal Durand, Jean-François Vuillermoz, Patrick Pilotti, Jean-François Grosdaillon
  • Patent number: 7645128
    Abstract: The invention relates to a dividing device, comprising an outer housing with an inlet and at least two outlets, at least two pump chambers placed adjacently of each other in the outer housing, each with a pump chamber infeed connected to the inlet and each with a pump chamber discharge connected to the outlet, at least two vane-type rotors, one in each pump chamber and with a rotation axis in line, each vane-type rotor comprising a hub provided with continuous vanes which are slidable through the hub along their longitudinal axis and almost perpendicularly of the axis of the hub, wherein the outer housing is divided into outer housing segments.
    Type: Grant
    Filed: January 20, 2003
    Date of Patent: January 12, 2010
    Assignee: De Jong Engineering Elburg B.V.
    Inventor: Pieter De Jong
  • Publication number: 20090180907
    Abstract: A two-stage rotary compressor includes a sealed cylindrical compressor housing in which first, second, third communication holes are provided apart in an axial direction on an outer peripheral wall; an accumulator held at an outside part of the housing; a low-pressure connecting pipe for connecting a bottom communication hole of the accumulator and the second communication hole; and an intermediate connecting pipe for connecting the first and third communication holes. The first and third communication holes are provided nearly in the same locations in the circumferential direction of the housing. The accumulator is held nearly in the same location in the circumferential direction as that of the second communication hole. The second communication hole is provided in a different location in the circumferential direction from those of the first and third communication holes for preventing interference between the low-pressure and intermediate connecting pipes each formed in arc shape.
    Type: Application
    Filed: January 7, 2009
    Publication date: July 16, 2009
    Inventors: Kenshi Ueda, Naoya Morozumi
  • Publication number: 20090110577
    Abstract: A variable delivery vane pump, in particular for oil, is provided with a stator (10) eccentrically mounted about a rotor (9), which is adapted to turn about one own longitudinal axis (6), and presents a plurality of grooves (15) radially outwardly opened and slidingly engaged, each, by a respective vane (17) the vanes (17) being arranged essentially in contact with the stator (10) by interposing at least one sliding element (19; 27) extending about the axis (6) according to an angle smaller than 360°.
    Type: Application
    Filed: November 18, 2005
    Publication date: April 30, 2009
    Applicants: H.P.E. High Performance Engeneering S.r.I., Officine Mazzocco Pagnoni S.r.L.
    Inventors: Ennio Ascari, Lorenzo Campani
  • Publication number: 20090035166
    Abstract: A two-stage rotary compressor having a compression mechanism including a single muffler housing member. The single muffler housing member at least partially defines an intermediate pressure discharge cavity and a discharge pressure discharge cavity. In one exemplary embodiment, the compression mechanism includes a cylinder block having a plurality of vanes positioned within slots formed in an inner cylindrical surface of the cylinder block. The slots are in fluid communication with the discharge pressure discharge cavity and receive discharge pressure working fluid to bias the vanes radially inwardly. In another exemplary embodiment, the cylinder block includes a plurality of passages for the delivery of working fluid to and from the cylinder block.
    Type: Application
    Filed: July 30, 2007
    Publication date: February 5, 2009
    Applicant: TECUMSEH PRODUCTS COMPANY
    Inventor: Joseph A. Newland
  • Publication number: 20080240954
    Abstract: There is provided a two-stage compression rotary compressor in which the balancer mass of a rotor can be made as small as possible, and the moments that tilt the whole of a shaft can be balanced. The axial length L2 of a high-stage side crankshaft 72 corresponding to a high-stage compressing section 32 is longer than the axial length L1 of a low-stage side crankshaft 73 corresponding to a low-stage compressing section 31 (L2>L1).
    Type: Application
    Filed: March 6, 2008
    Publication date: October 2, 2008
    Applicant: FUJITSU GENERAL LIMITED
    Inventors: Naoya Morozumi, Kenshi Ueda
  • Patent number: 7404705
    Abstract: A blending pump assembly for accurately maintaining the proper ratio of two fluid components. Flow of a first fluid is utilized to drive a fluid motor, which in turn drives a pumping mechanism to inject a proportional amount of a second fluid into the flow of the first fluid. The fluid motor and pump are sized so that a predetermined ratio between the two fluids is maintained regardless of changes in pressure and flow rate of such first fluid.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: July 29, 2008
    Assignee: International Dispensing Corporation
    Inventor: Mitchell A. Friedman
  • Publication number: 20070172370
    Abstract: An object of the invention is to provide a capacity control device of a screw compressor capable of restraining the consumption of components such as a suction throttle valve and of extending the life of the components.
    Type: Application
    Filed: October 10, 2006
    Publication date: July 26, 2007
    Inventors: Masahiko Takano, Yuji Kamiya
  • Patent number: 7156922
    Abstract: A multi-chamber installation (1) treats objects under vacuum. An evacuation system (5) is connected to a plurality of chambers (2, 3, 4). To reduce the complexity of the evacuation process, a forepump (5) has several stages (11, 12, 13). Each of said stages is connected to one of the chambers (2, 3, 4).
    Type: Grant
    Filed: September 28, 2002
    Date of Patent: January 2, 2007
    Assignee: Leybold Vakuum GmbH
    Inventors: Peter Müller, Lutz Arndt
  • Patent number: 7131826
    Abstract: A blending pump assembly for accurately maintaining the proper ratio of two fluid components. Flow of a first fluid is utilized to drive a fluid motor, which in turn drives a pumping mechanism to inject a proportional amount of a second fluid into the flow of the first fluid. The fluid motor and pump are sized so that a predetermined ratio between the two fluids is maintained regardless of changes in pressure and flow rate of such first fluid.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: November 7, 2006
    Assignee: International Dispensing Corporation
    Inventor: Mitchell A. Friedman
  • Patent number: 7048525
    Abstract: A flow divider for use with fluent materials, such as raw sausage. The flow divider is a combination of at least two housing bodies with chambers defined by elliptical cylindrical sidewalls. Hubs with transverse vanes have necked-down regions at one end that are rotatably mounted in a similarly-sized aperture in an endwall of each housing body. The vanes' tips follow the elliptical cylindrical sidewalls in the manner of a vane pump. Sausage is conveyed from a conventional pump into the inlet of the flow divider, and flows through passages into inlet cavities, one inlet cavity per chamber, through the sub-chambers formed by the space between the vanes, and outlet cavities, one outlet cavity per chamber. The amount of sausage that flows through each chamber is equal due to the driving linkage between the hubs of each housing body.
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: May 23, 2006
    Assignee: J. E. Grote Company
    Inventors: Mark A. Brick, David J. Petty
  • Patent number: 6959685
    Abstract: A rotary internal combustion engine has a shaft, a compression chamber, an ignition chamber, a center wall, a first rotor, and a second rotor. The shaft is fixed to the rotors while being rotatably mounted to the compression and ignition chambers. The compression chamber has an oval shaped chamber wall and receives fuel and compresses the fuel. The ignition chamber has an oval shaped chamber wall and receives compressed fuel from the compression chamber and combusts the compressed fuel. The center wall is located between the compression chamber and ignition chamber and allows passage of compressed fuel from the compression chamber to the ignition chamber. The first rotor has a circular perimeter surface and is rotatably received within the compression chamber. The second rotor has a circular perimeter surface and is rotatably received within the ignition chamber.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: November 1, 2005
    Inventors: Herman R. Person, Henry M. Person
  • Publication number: 20040182356
    Abstract: A rotary internal combustion engine has a shaft, a compression chamber, an ignition chamber, a center wall, a first rotor, and a second rotor. The shaft is fixed to the rotors while being rotatably mounted to the compression and ignition chambers. The compression chamber has an oval shaped chamber wall and receives fuel and compresses the fuel. The ignition chamber has an oval shaped chamber wall and receives compressed fuel from the compression chamber and combusts the compressed fuel. The center wall is located between the compression chamber and ignition chamber and allows passage of compressed fuel from the compression chamber to the ignition chamber. The first rotor has a circular perimeter surface and is rotatably received within the compression chamber. The second rotor has a circular perimeter surface and is rotatably received within the ignition chamber.
    Type: Application
    Filed: March 15, 2004
    Publication date: September 23, 2004
    Inventors: Herman R. Person, Henry M. Person
  • Patent number: 6766783
    Abstract: A rotary internal combustion engine has a shaft, a compression chamber, an ignition chamber, a center wall, a first rotor, and a second rotor. The shaft is fixed to the rotors while being rotatably mounted to the compression and ignition chambers. The compression chamber has an oval shaped chamber wall and receives fuel and compresses the fuel. The ignition chamber has an oval shaped chamber wall and receives compressed fuel from the compression chamber and combusts the compressed fuel. The center wall is located between the compression chamber and ignition chamber and allows passage of compressed fuel from the compression chamber to the ignition chamber. The first rotor has a circular perimeter surface and is rotatably received within the compression chamber. The second rotor has a circular perimeter surface and is rotatably received within the ignition chamber.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: July 27, 2004
    Inventors: Herman R. Person, Henry M. Person
  • Patent number: 6638040
    Abstract: A dry vacuum pump comprises a scroll-type vacuum pump and a rotary-vane vacuum pump, wherein the rotary-vane vacuum pump is mounted on the side of an inlet, whereas the scroll-type vacuum pump is mounted on the side of an outlet, and then a compound-type dry vacuum pump is formed by connecting and integrating the rotary-vane vacuum pump and the scroll-type vacuum pump, having the advantages of high compression ratio, high vacuuming speed, low production cost and simplified structure, thus improving the working effectiveness and quality of pumps accordingly.
    Type: Grant
    Filed: December 31, 2001
    Date of Patent: October 28, 2003
    Assignee: Industrial Technology Research Institute
    Inventors: Chih-Cheng Wang, Jenn Chen Tang, Cheng Chou Shieh, Weng-Shih Cang
  • Patent number: 6589033
    Abstract: The present invention provides a unitary sliding-vane type compressor-expander comprising a housing with a compressor inlet and outlet, and an expander inlet and outlet. A single rotor is disposed therein defining in cooperation with the housing a compression chamber on one side and an expansion chamber on the opposite side. The rotor includes a plurality of regularly spaced vanes slidingly disposed in slots about the periphery of the rotor. The bottoms of the vane slots may be vented through a passage in the housing to the inlet air, or alternatively through a groove between the vane and vane slot to the compression or exhaust chambers. Permanent magnets are used in the vanes and housing to increase or decrease the contact force between the vane tip and housing. An integral condenser-humidifier is provided in the path of the expanded gas exhausting from the turbine outlet for condensing water out of the expanded gas and returning the condensed water to the compressor-expander.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: July 8, 2003
    Assignee: Phoenix Analysis and Design Technologies, Inc.
    Inventors: Mark C. Johnson, Eric R. Miller, Jason L. Addink, Jorge L. Rosales, Bradley B. Rogers
  • Patent number: 6499976
    Abstract: A roller vane motor having a housing and a stator positioned on an inside surface of the housing. The stator has an internal wall with an inlet port and an outlet port and the portion of this internal wall at the outlet port tapers open at an angle of less than 45 degrees relative to a tangent of the internal wall. A rotor assembly is positioned within the stator. The rotor assembly includes: i) a rotor shaft, ii) a plurality of flutes extending from the rotor shaft; and iii) cylindrical rollers positioned between said flutes.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: December 31, 2002
    Inventors: Andrew J. McPhate, Matthew McPhate, Douglas R. Fleming
  • Publication number: 20020150489
    Abstract: The present invention relates to a rotor of a rotary vane type vacuum pump capable of enhancing a durability, decreasing a processing and assembling time and a fabrication cost, increasing a productivity and decreasing a maintenance. In the rotor of a rotary vane type vacuum pump according to the present invention, the vane groove is extended to a support shaft portion which is a connection potion of the rotor body and the first and second rotors, and one end of the same includes a slot having an opened end, a sleeve which is a cylindrical bearing is inserted onto an outer portion of the support shaft portion which is a connection portion of the first and second rotors, and the first and second rotors are connected by a connection coupling which includes an engaging protrusion inserted into an opening end groove formed when the vane groove is formed and the sleeve is assembled.
    Type: Application
    Filed: August 6, 2001
    Publication date: October 17, 2002
    Inventor: Deok-Kyeom Kim
  • Patent number: 6273694
    Abstract: A rotary-piston machine (10) comprising a housing (5) having a cavity (9), a rotor (2) received in the housing (5), which rotor (2) having a rotor axis (A) and a peripheral surface (21), inlet and outlet passages (3, 4) in communication with said cavity (9), one or more vanes (1) radially slideable received in slots (11) in the rotor (2), each vane (1) extending radially from the internal surface (20) of the housing (5) to the rotor axis (A), and at least one working chamber (9a) being part of the cavity (9) and is defined by the internal surface (20) of the housing (5), the peripheral surface (21) of the rotor (2) and the side surface of at least one vane (1).
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: August 14, 2001
    Assignee: Vading Motor AS
    Inventor: Kjell Vading
  • Patent number: 6123526
    Abstract: A multistage pump includes a shaft assembly and a housing and spacing plates. The shaft assembly completed by forming shafts and rotors integrally. The spacing plates defining a plurality of successive compression chambers, each chamber is delimited by two symmetrical spacing plates, there has a ring groove associated with the spacing plates, and having an elastic component placed. When the elastic component pressed by the housing, it became leakage and the clearance between the rotors and the spacing plates be easily controlled, by this way, the pump using parts are easy to manufacture, can be machined accurately and which enable highly accurate assembly to be achieved. As to the assembling method, which is characterized by mounting the high pressure end axial bearing seat and the high pressured end plate, then to control the clearance between the high pressure end plate of the bearing seat and the rotors. Furthermore, to install the spacing plates and the housing make the compression chamber formed.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: September 26, 2000
    Assignee: Industrial Technology Research Institute
    Inventors: Chun-Chien Chen, Ming-Shinn Liou, Tean-Mu Shen, Jung-Chen Chien, Tsung-Hsin Lin
  • Patent number: 6024547
    Abstract: A multi-rotor type compressor including plural compression elements each of which includes a rotor eccentrically rotating in a cylinder and a vane which is in sliding contact with the outer peripheral surface of the rotor and partitions the inside space of the cylinder into a suck-in space in which a suck-in operation is performed and a compression space in which a compressing operation is performed, and a power save mechanism including an intercommunication path through which the compression space of a compression element is allowed to intercommunicate with the suck-in space of another compression element at a predetermined phase, an interception valve for intercepting flow of fluid in the intercommunication path, and a check valve which is provided in the intercommunication path and allows the fluid to flow therethrough in only one direction. The compression may be equipped in an air conditioner.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: February 15, 2000
    Assignee: Sanyo Electric Co., Ltd.
    Inventor: Koji Nagae
  • Patent number: 5879138
    Abstract: The invention pertains to a rotary vane vacuum pump (1) with a high vacuum stage (9, 22), with a fore-vacuum stage (8, 21), with a substantially cylindrical rotor (3) which has bearing and anchor segments (11 and 21, 22), a bearing segment (11) being situated between two anchor segments (21, 22) and the anchor segments (21, 22) having vane slots (25, 26), and with a roughly pot-shaped housing (2) which contains the pump chambers (8, 9) and whose base is designed as a bearing piece (13) with a passage (35) for the rotor drive. To provide for a simple manufacture, the invention proposes that the operational rotor (3) is of one piece, that both anchor sections (21, 22) of the rotor (3) are arranged on the face side, that the bearing segment (11) between the anchor segments (21, 22) is the only bearing segment and that both vane slots (25, 26) are open from their respective front sides. (Drawing FIG.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: March 9, 1999
    Assignee: Balzers Und Leybold Deutschland Holding AG
    Inventors: Lutz Arndt, Peter Muller
  • Patent number: 5855474
    Abstract: A two-stage rotating vane device comprising an outer stator defining a plurality of ports and an elliptically or cylindrically shaped interior cavity surface, with an inner stator defining a plurality of ports, the inner stator either being elliptically shaped or configured in a predetermined shape and located in the elliptically or cylindrically shaped interior cavity. A rotor is disposed in the elliptically or cylindrically shaped interior cavity between the interior cavity surface of the outer stator and the inner stator, the rotor defining a plurality of slots. A plurality of slidable vanes are situated in the plurality of slots for spanning between the interior cavity surface of the outer stator and the inner stator, and wherein a first stage is defined between the inner stator and the rotor, and a second stage is defined between the interior cavity surface of the outer stator and the rotor, the first and second stages communicating with each other.
    Type: Grant
    Filed: January 5, 1996
    Date of Patent: January 5, 1999
    Inventor: Ahmad R. Shouman
  • Patent number: 5769617
    Abstract: A rotary sliding-vane compressor is described which contains a single rotor with compressor and expander sections, together with a reduced number of parts and efficiency improvements compared to conventional compressors.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: June 23, 1998
    Assignee: Refrigeration Development Company
    Inventor: John Stewart Glen
  • Patent number: 5573387
    Abstract: A rotary vacuum pump having a low vacuum stage and a high vacuum stage. Each stage includes a stator body having a bore and a rotor mounted eccentrically in the bore to form a cavity between the stator body and the rotor. The rotor of each stage has two vanes slidably positioned in diametrically opposed slots in the rotor which in use of the pump are substantially in contact with an inner wall of the stator body during rotation of the rotor. The stator body of each stage has an inlet and an outlet to allow, in use of the pump, fluid being pumped to enter into and be expelled from the cavity by means of the rotating vanes. Oil to be injected into the low vacuum stage and, when required, into the high vacuum stage also. Differential flow rates (including zero) of ballast gas are introduced to the low vacuum stage, for example in an amount in excess of ten percent of the overall vacuum pump capacity (which equates to the capacity of the high vacuum stage).
    Type: Grant
    Filed: December 5, 1994
    Date of Patent: November 12, 1996
    Assignee: The BOC Group plc
    Inventor: Alan E. K. Holbrook
  • Patent number: 5372489
    Abstract: A vane compressor capable of obtaining a two stage compression. The compressor has a front and rear rotor 6a and 6b for defining, together with a cylinder bores 43 and 44, first and second operating chambers 39 and 40, respectively. A refrigerant from a first inlet opening 28 is sucked into the first operating chamber 39 by a rotation of the front rotor 6a for obtaining a first stage compression at the first chamber 39. The refrigerant is then introduced, via an intermediate pressure chamber 36, to the second operating chamber 40 for obtaining a second stage compression at the second chamber 40, which is discharged outwardly.
    Type: Grant
    Filed: October 21, 1993
    Date of Patent: December 13, 1994
    Assignee: Nippon Soken Inc.
    Inventors: Mikio Matsuda, Mitsuo Inagaki, Hideaki Sasaya
  • Patent number: 5284426
    Abstract: A multiple stage rotary compressor having a housing with a pump cavity, an orbiting ring piston in the cavity, a cylindrical post carried by the housing within the orbiting ring, a pair of vanes engaging the outer surface of the orbiting ring to define a pair of primary pumping chambers in the cavity and a second pair of internal vanes contacting the inner surface of the orbiting ring to define a pair of secondary pumping chambers and a capacity controller adapted to selectively disable each of the outer vanes to establish differing compressor pump capacities depending upon the operating requirements of the compressor.
    Type: Grant
    Filed: March 15, 1993
    Date of Patent: February 8, 1994
    Assignee: Ford Motor Company
    Inventors: Guntis V. Strikis, Vipen K. Khetarpal
  • Patent number: 5242280
    Abstract: A multi-stage rotary type compressor is constituted in such a manner that an electric motor and a plurality of compression elements to be driven by the electric motor are disposed in a closed container and the compression elements thus-disposed are sequentially connected in series. The compressor thus-constituted is arranged in such a manner that the space in the closed container is filled with the pressure discharged from the final stage. Furthermore, lubricating oil, the pressure of which is equivalent to the level of the pressure discharged from each compression element, is introduced into a back side chamber of a vane of each compression element to urge the back side of each vane with the pressure of lubricating oil. As a result, the wear of the tip end of the vane and the input loss are prevented. Therefore, satisfactory durability and compression efficiency can be obtained.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: September 7, 1993
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Katuharu Fujio
  • Patent number: 5178522
    Abstract: A two-stage rotary vane vacuum pump includes a pre-vacuum stage having a pre-vacuum pumping chamber and an outlet valve; a main oil sump; and a first oil conduit having a first opening communicating with the main oil sump and a second opening communicating with the pre-vacuum pumping chamber. The first opening is located at a level below an operational oil level in the main oil sump. There is further provided an intermediate oil sump situated at a level above the outlet valve and being arranged for receiving oil from the pre-vacuum pumping chamber; and a second oil conduit leading from the intermediate oil sump to components of the vacuum pump to be supplied with oil. All such components are situated at a level below the intermediate oil sump.
    Type: Grant
    Filed: May 23, 1991
    Date of Patent: January 12, 1993
    Assignee: Leybold Aktiengesellschaft
    Inventors: Thomas Abelen, Lutz Arndt, Winfried Kaiser, Peter Muller, Dieter Vorberg
  • Patent number: 5030071
    Abstract: A roller vane motor as described, the motor having a stator with a generally cylindrical chamber provided with fluid inlet and outlet means. A rotor is provided in the chamber to be rotatable therein, the rotor having a slot to receive a roller which forms a seal between the rotor and said chamber. The roller is urged into the sealing condition by means of drive fluid flowing behind the roller. A twin-roller version is also described as is a motor assembly made up of a number of vane motors arranged in line.
    Type: Grant
    Filed: December 6, 1989
    Date of Patent: July 9, 1991
    Inventor: Neil A. A. Simpson
  • Patent number: 4960371
    Abstract: A rotary gas compressor suitable for heavy duty continuous or intermittent operation with automatic inlet and outlet pressure control valves to reduce power consumption and increase volumetric efficiency. Articulated volume displacers further increase volumetric efficiency, extend life of wearing components and permit infinitely variable capacity control from 0 to 100%. High loads and high speeds are possible due to intrinsic radial load balancing. Additional provisions include replaceable cylinder liners.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: October 2, 1990
    Inventor: H. Eugene Bassett