With Lubricator Patents (Class 417/423.13)
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Patent number: 11846285Abstract: The pump comprises a casing; a statoric part stationarily housed in the casing; at least one impeller arranged for rotation in the casing. A process fluid path extends though the statoric part and the impeller. A bearing rotatingly supports the impeller in the casing and a bearing lubrication path is provided, to circulate a fluid flow through the bearing. A rotary screw integral with the impeller and rotating therewith when the pump is operating provides a pumping action on process fluid such that rotation of the impeller promotes process fluid circulation by means of said rotary screw through the bearing lubrication path.Type: GrantFiled: January 14, 2020Date of Patent: December 19, 2023Assignee: Nuovo Pignone Tecnologie—S.R.LInventors: Francesco Cangioli, Matteo Berti, Alessandro Musacchio, Leonardo Tognarelli
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Patent number: 11333158Abstract: A radial blower, in particular for a cooling machine, comprising a housing in which a shaft is rotationally mounted, which receives at least one impeller wheel of a compressor at one end, which is secured to the housing, comprising at least one radial bearing and at least one axial bearing via which the shaft is rotationally mounted in the housing, and comprising a motor driven by a rotor and a stator and provided between the first and the second radial bearing, wherein at least one channel having a pressure connection for a pressure medium to be supplied is provided in the housing, which channel feeds into a rotor space formed between the shaft and the housing and extending from the impeller wheel to the radial bearing or axial bearing, which is provided next to the impeller wheel.Type: GrantFiled: April 2, 2019Date of Patent: May 17, 2022Assignee: TEQTONIQ GmbHInventors: Andreas Lehr, Michael Bütikofer, David Muri, Markus Maier
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Patent number: 10729942Abstract: An inflation needle includes a first end for insertion into an inflatable object, a second end for connection to a pump and an elongated member having a conduit for air therethrough and connecting the first end and the second end, where at least a portion of the elongated member includes a flexible portion. The flexible portion may include a flexible bellows.Type: GrantFiled: October 26, 2018Date of Patent: August 4, 2020Assignee: MCGARVEY HOLDINGS, INC.Inventor: Michael McGarvey
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Patent number: 10648702Abstract: A system (20; 300) comprises: a vapor compression loop (38; 338); a low-pressure or medium-pressure refrigerant in the loop; a centrifugal compressor (42) along the vapor compression loop and comprising: a housing (120); an inlet (44); an outlet (46); an impeller (140); an electric motor (122) coupled to the impeller to drive rotation of the impeller; and one or more refrigerant-lubricated bearings (130, 132).Type: GrantFiled: August 11, 2016Date of Patent: May 12, 2020Assignee: Carrier CorporationInventors: Parmesh Verma, Frederick J. Cogswell, William T. Cousins, Vishnu M. Sishtla, Ulf J. Jonsson, Larry D. Burns
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Patent number: 10570775Abstract: A turbo machine of the present disclosure includes a cylindrical bearing housing, a rotation shaft, a bearing, a bearing holder, and an end elastic body. The rotation shaft is located in the bearing housing. The bearing rotatably supports the rotation shaft at least in a radial direction of the rotation shaft. The bearing holder faces one end of the bearing and is fixed to the bearing housing. The end elastic body is disposed between the one end of the bearing and the bearing holder in the axial direction of the bearing and is in contact with the bearing and the bearing holder. The end elastic body is formed of a material having a lower modulus of elasticity than a material forming the bearing holder.Type: GrantFiled: May 20, 2016Date of Patent: February 25, 2020Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Kazuyuki Kouda, Hidetoshi Taguchi, Akira Hiwata, Takeshi Ogata, Tadayoshi Shoyama, Hiroshi Hasegawa
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Patent number: 10519966Abstract: A plain bearing (410) is fixed to a shaft hole (401) of an impeller (400) of the pump (100) so as to rotatably support the impeller (400) with respect to the shaft (300), and is restricted from moving in an axial direction by an annular restrictor (310) fixed to the shaft (300). On an end face (411) of the plain bearing (410) facing the restrictor (310), a lubrication groove (412) connecting a radially inner side and a radially outer side of the end face (411) to supply cooling water onto the end face (411) for lubrication, and a dynamic pressure generating groove (413) that introduces a flow of cooling water created by rotation of the impeller (400) to generate a dynamic pressure, are provided. The present bearing suppresses an increase in rotation torque of the impeller (400) during high speed rotation.Type: GrantFiled: December 22, 2015Date of Patent: December 31, 2019Assignee: EAGLE INDUSTRY CO., LTD.Inventors: Shinya Yamamoto, Satoshi Yasu, Takeshi Hosoe, Yuichiro Tokunaga, Keiichi Chiba
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Patent number: 10514041Abstract: A centrifugal compressor includes a rotation shaft, an impeller, a housing including a first chamber, a second chamber of which pressure is lower than the first chamber, and a partition wall that partitions the first chamber and the second chamber and includes a through hole through which the rotation shaft is inserted, and a seal member arranged in the housing. The seal member includes a gas seal and a support. When the rotation shaft is rotating, the gas seal surrounds an outer circumferential surface of the rotation shaft in a non-contact state in which dynamic pressure forms a gap between the gas seal and the outer circumferential surface of the rotation shaft. The support supports the gas seal in a state in which the gas seal is movable in a direction intersecting an axial direction of the rotation shaft.Type: GrantFiled: July 22, 2016Date of Patent: December 24, 2019Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventor: Toshiro Fujii
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Patent number: 10495093Abstract: A micro-hydraulic suspension mechanical pump includes a volute, an upper cover, an impeller, a brushless motor, a waterproof sleeve and water lubrication spiral groove thrust bearings, each having stationary and rotating rings. A water inlet and a water outlet channel are provided on the volute, and a middle water inlet hole is formed on the upper cover. The water lubrication spiral groove thrust bearings are provided above and below a magnetic steel rotor. During operation of the micro-hydraulic suspension mechanical pump, a liquid film is formed between the stationary ring and the rotating ring to enable the magnetic steel rotor to be suspended, and a liquid film is formed between the outer wall of the rotor sleeve and the inner wall of the waterproof sleeve. Due to suspension of the rotor, wear caused contact is avoided, and service life of the micromechanical pump is improved.Type: GrantFiled: January 19, 2017Date of Patent: December 3, 2019Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Xiaobing Luo, Falong Liu, Bin Duan, Han Wu, Jinyan Hu, Xingjian Yu
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Patent number: 10458414Abstract: An automotive electric liquid pump includes a separation can having a radial inside which includes a static bearing ring, a pump rotor, and a motor rotor which rotates in the separation can. The motor rotor includes a radial outside having a cylindrical rotor bearing ring. The static bearing ring of the separation can corresponds to the cylindrical rotor bearing ring of the motor rotor. A first radial slide bearing is defined by the cylindrical rotor bearing ring and the static bearing ring.Type: GrantFiled: March 6, 2014Date of Patent: October 29, 2019Assignee: PIERBURG PUMP TECHNOLOGY GMBHInventors: Alessandro Malvasi, Andreas Wulf
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Patent number: 9022760Abstract: A compressor for compressing refrigerant in a refrigerant circuit includes a housing defining a compression chamber. A screw rotor is mounted within the housing and configured to form a pocket of high pressure refrigerant and a pocket of low pressure refrigerant within the compression chamber. The screw rotor has a rotor shaft rotating about an axis. A bearing cavity includes at least one bearing rotatably supporting the rotor shaft. A partition through which the rotor shaft extends separates the bearing cavity from the compression chamber. A contacting seal is sealingly engaged with the rotor shaft and disposed in the bearing cavity proximate the partition. A passage has an opening adjacent the rotor shaft between the contacting seal and the compression chamber and in fluid communication with the pocket of low pressure refrigerant.Type: GrantFiled: November 2, 2011Date of Patent: May 5, 2015Assignee: Trane International Inc.Inventors: Robert S. Bakkestuen, Jay H. Johnson
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Patent number: 9011115Abstract: A bearing assembly for use in a deepwell submersible pump, the pump and a method of pumping a geothermal fluid. The bearing assembly is constructed to include a lubricant conveying mechanism, a bearing sleeve and a multilayer bushing. The lubricant is forced between the bushing and a bearing sleeve by the lubricant conveying mechanism that cooperates with the rotation of a shaft used to connect a power-providing motor with one or more pump impellers. In this way, there exists a substantially continuous lubricant environment between the sleeve and bushing to act in a hydrodynamic fashion.Type: GrantFiled: October 30, 2013Date of Patent: April 21, 2015Assignee: Flowserve Management CompanyInventors: Behrend Goswin Schlenhoff, Axel Helmut Tank-Langenau, Thomas Albers
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Publication number: 20150093256Abstract: Systems and methods for maintaining a desired differential pressure between a cooling oil of an electric motor and a process gas working fluid of a compressor connected axially to the electric motor. The cooling oil acts as a coolant for the motor compartment of the electric motor and the gas working fluid acts as a coolant for the rotor compartment of the electric motor. At least one bellow is configured to provide two sealed compartments in a pressure equalizer and a spring means is configured to add a differential pressure to the cooling oil, assuring no leaks between the two fluids flows from the cooling oil to the process gas working fluid and no contact of the process gas working fluid with the electric motor stator, in particular electric motor laminations and electric motor windings.Type: ApplicationFiled: May 8, 2013Publication date: April 2, 2015Inventors: Massimiliano Mariotti, Claudia Cagnarini, Francesco Del Medico
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Patent number: 8979512Abstract: An oil-retaining bearing fan device includes a fan base seat, at least one oil-retaining bearing and at least one magnetic member. The oil-retaining bearing is disposed in a bearing hole of the fan base seat. The oil-retaining bearing has at least one receiving hole for receiving the magnetic member therein. The magnetic member serves to apply a magnetic attraction force to a shaft of the fan device to make the shaft quickly restore to its optimal operation position so as to reduce wear and lower the noises and vibration of the fan device in operation. Therefore, the lifetime of the fan device can be prolonged.Type: GrantFiled: December 5, 2011Date of Patent: March 17, 2015Assignee: Asia Vital Components (Chengdu) Co., Ltd.Inventors: Bor-Haw Chang, Shu-Fen Liu
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Patent number: 8959920Abstract: An assembly or system is provided for selectively regulating journal bearing lubrication between at least first and second levels in an aircraft engine. A high pressure pump includes movable portions at least in part supported by a journal bearing. A selector valve is configured to selectively supply lubrication flow to the journal bearing. In addition, a relief valve is configured to receive a signal from the selector valve defining a pressure level at which the relief valve should relieve pressure.Type: GrantFiled: April 13, 2012Date of Patent: February 24, 2015Assignee: Eaton CorporationInventor: Martin A. Clements
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Publication number: 20140369869Abstract: Disclosed herein is an electric blower capable of preventing grease stored in a boss part of a bracket from being leaked and/or evaporated. The electric blower includes: a housing receiving a stator, a rotating shaft, and rotor; a housing cover covering an upper opening part of the housing; and a bracket including a boss part which protrudes vertically upward in a cylindrical shape at a central portion thereof to receive an upper bearing and the rotating shaft and a flange which radially elongates outward from the boss part to be coupled with the housing and rotatably supporting the rotating shaft, wherein the boss part includes a disk-shaped flat upper surface having a shaft hole helping penetration of the rotating shaft, a cylindrical side wall extending downward from an edge of the upper surface, and at least one guide groove formed at a lower portion of the upper surface.Type: ApplicationFiled: June 13, 2014Publication date: December 18, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Myung Geun OH, Sung Tai JUNG
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Patent number: 8845308Abstract: A thrust module and a seal module for use in an electric submersible pump assembly is provided. The thrust module provides increased lubrication and heat dissipation while increasing sealing redundancies within the module. The thrust module includes a thrust bearing that absorbs thrust from the primary pump. A circulation pump assembly is coupled to the thrust bearing to circulate fluid through the thrust bearing and dissipate heat generated in the thrust bearing through a plurality of fins formed on an exterior surface of the circulation pump assembly. The seal module has labyrinth discs positioned within the seal module that inhibit fluid flow through the seal module. The seal module also includes check valves that release fluid from and allow fluid into the seal module at predetermined pressures. The sealing assembly is interposed between the thrust bearing and a primary pump of the electric submersible pump.Type: GrantFiled: April 14, 2011Date of Patent: September 30, 2014Assignee: Baker Hughes IncorporatedInventors: Steven K. Tetzlaff, Chad A. Craig
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Publication number: 20140161653Abstract: A cooling fan includes a stator, a base supporting the stator, and a rotor positioned to rotate with respect to the stator. The base includes a bearing housing and a central hole defined in the bearing housing. The rotor includes a hub and a shaft extending from the hub. An end of the shaft is fixed in the hub, and another end of the shaft is extending in the central hole defined in the bearing housing. The bearing housing includes a main cylindrical portion and a protruding portion bent radially inward from a top end of the main portion, and the protruding portion thus serves as a lubricant retaining portion of the bearing housing.Type: ApplicationFiled: April 21, 2013Publication date: June 12, 2014Applicant: Foxconn Technology Co., Ltd.Inventors: MING-HSIU CHUNG, YU-KAI TAI, WEN-CHENG CHEN
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Publication number: 20140154102Abstract: A cooling system for a rotating machine, such as a centrifugal compressor. Specifically, the cooling system may be configured to cool radial and axial magnetic bearings in the rotating machine and the bearing control system that controls said bearings. The cooling system includes canned magnetic radial bearings on each end of the rotor and a canned bearing control system. The canned bearings and canned bearing control system may be filled with a dielectric cooling fluid and in fluid communication with each other via sealed conduits. Accordingly, the radial magnetic bearings and the bearing control system may be entirely immersed in the dielectric cooling fluid to regulate heat generation. An axial magnetic bearing may also be canned and fluidly coupled to the cooling system to immerse the axial magnetic bearing in the dielectric cooling fluid.Type: ApplicationFiled: March 29, 2012Publication date: June 5, 2014Applicant: DRESSER-RAND COMPANYInventors: Joseph A. Tecza, H. Allan Kidd
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Publication number: 20140056741Abstract: The heating circulation pump includes a pump housing with a pump impeller which is arranged therein and which is driven by an electric motor whose stator housing includes a flange, which connects to the pump housing. The heating circulation pump includes a terminal box housing for at least the electric connection of the motor. The terminal box housing engages over the stator housing from the side which is away from the pump, to into the region of the flange.Type: ApplicationFiled: February 24, 2012Publication date: February 27, 2014Applicant: GRUNDFOS MANAGEMENT A/SInventor: Mikkel Rind Stentoft
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Publication number: 20140056735Abstract: A vacuum pump includes a rotating body having a rotation side exhaust function portion and a rotor shaft, a stationary side exhaust function portion, a lubricated ball bearing for supporting the rotor shaft, a motor for rotating and driving the rotating body, and a first labyrinth seal provided between a space in which a motor stator of the motor is arranged and a space in which the lubricated ball bearing is arranged.Type: ApplicationFiled: July 31, 2013Publication date: February 27, 2014Applicant: Shimadzu CorporationInventors: Osamu ASHIDA, Kohei OUE
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Publication number: 20140056739Abstract: A ceiling fan includes an outer rotor motor having a rotor connected to a rotating disc and a stator connected with an inner tube. An outer tube is fitted around the inner tube, having one end connected with the rotating disc, and a plurality of elastic buffer pieces are positioned between the outer tube and the rotating disc. By so designing, when the rotor is rotated to actuate the rotating disc together with the outer tube to rotate, the elastic buffer pieces can absorb the vibration produced by operation of the outer rotor motor and also correct bias swinging of the outer tube through their elastic deformation to enable the outer tube to be rotated stably.Type: ApplicationFiled: August 23, 2012Publication date: February 27, 2014Applicant: Air Cool Industrial Co., Ltd.Inventor: Cliff Wang
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Patent number: 8616863Abstract: A submersible pumping system for use downhole, wherein the system includes a pump, a pump motor, a seal section, a shaft coupling the pump motor to the pump, and bearing assemblies for radially retaining the shaft in place that are offset with respect to an axis of the shaft. The offset bearing assemblies produce side loads in the shaft that reduce shaft vibration during use. The bearing assemblies can be a combination of symmetric and asymmetric assemblies set in an alternating pattern along the length of the shaft.Type: GrantFiled: March 29, 2011Date of Patent: December 31, 2013Assignee: Baker Hughes IncorporatedInventor: Michael A. Forsberg
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Patent number: 8602753Abstract: A bearing assembly for use in a deepwell submersible pump, the pump and a method of pumping a geothermal fluid. The bearing assembly is constructed to include a lubricant conveying mechanism, a bearing sleeve and a multilayer bushing. The lubricant is forced between the bushing and a bearing sleeve by the lubricant conveying mechanism that cooperates with the rotation of a shaft used to connect a power-providing motor with one or more pump impellers. In this way, there exists a substantially continuous lubricant environment between the sleeve and bushing to act in a hydrodynamic fashion.Type: GrantFiled: September 21, 2009Date of Patent: December 10, 2013Assignee: Flowserve Management CompanyInventors: Behrend Goswin Schlenhoff, Axel Helmut Tank-Langenau, Thomas Albers
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Publication number: 20130171016Abstract: An oil-retaining bearing fan structure includes a fan base seat, an oil-retaining bearing and a fan impeller. The fan base seat has a bearing cup on one side. At least one magnetic member is enclosed in the bearing cup. The magnetic member serves to apply a magnetic attraction force to a shaft of the fan structure to make the shaft quickly restore to its optimal operation position so as to reduce wear and lower the noises and vibration of the fan structure in operation. Therefore, the lifetime of the fan structure can be prolonged.Type: ApplicationFiled: January 4, 2012Publication date: July 4, 2013Inventors: Bor-Haw Chang, Shu-Fan Liu
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Patent number: 8449245Abstract: A vertically mountable shaft and bearing assembly includes a thermally insulated housing that protects the shaft, bearing(s), and lubricant from overheating due to a surrounding process fluid that is above 65° C. This allows a bearing to be located near the shaft's distal end, thereby reducing shaft and bearing size requirements. The housing also serves as a reservoir for bearing lubricant that can be cooled by a lubricant cooling system normally used for processes at much lower temperatures. The lubricant can be circulated by an impeller that is actuated by the shaft or driven separately. The thermal insulation, can include vacuum, air, and/or a thermally insulating material. Additional rolling element and/or journal bearings can be included. Lubricant within the shaft housing can be pressurized, for example by pressurized gas or by filling the lubricant above the surrounding process fluid level. The shaft can operate a process fluid pump impeller.Type: GrantFiled: June 4, 2012Date of Patent: May 28, 2013Assignee: Flowserve Management CompanyInventor: Paul E Griggs
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Publication number: 20130121859Abstract: A bearing apparatus includes a cylindrical bearing portion; a cap member; a cylindrical holder; a shaft; and a thrust plate. The holder includes an increased diameter portion. The bearing portion includes a plate accommodating portion. An outer circumferential surface of the plate accommodating portion is arranged to have a diameter greater than a diameter of an outer circumferential surface of a portion of the bearing portion which is on an upper side of the plate accommodating portion. The distance between the outer circumferential surface and an inner circumferential surface of the plate accommodating portion is arranged to be smaller than the distance between the outer circumferential surface and an inner circumferential surface of the portion of the bearing portion which is on the upper side of the plate accommodating portion. A thrust dynamic pressure bearing portion is defined in a thrust gap.Type: ApplicationFiled: October 23, 2012Publication date: May 16, 2013Applicant: NIDEC CORPORATIONInventor: Nidec Corporation
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Patent number: 8435018Abstract: A cooling fan (1) includes a fan housing (10), a stator (20), a rotor (30) and a bearing assembly (40). A tube (111) extends upwardly from a central portion of the fan housing. The stator is mounted around the tube. The bearing assembly includes a ball bearing (333) and a sleeve bearing (335) received in two ends of the tube, respectively. The rotor has a shaft (336) extending into and rotatably supported by the bearing assembly. An elastic element (332) is arranged on the ball bearing to provide a pressing force on the ball bearing toward the sleeve bearing. An oil retaining element (339) is arranged around a bottom end of the shaft and spaced from the shaft. The oil retaining element is attached to the sleeve bearing to provide oil for the sleeve bearing.Type: GrantFiled: December 19, 2011Date of Patent: May 7, 2013Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.Inventors: Yong-Kang Zhang, Zhi-Ya Yang, Ying-Liang Li
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Patent number: 8419286Abstract: A compressor has a rotation shaft in a hermetic container, and first and second bearings to support the shaft in the container. A tolerance between the second bearing and the rotation shaft and a tolerance between the first bearing and the rotation shaft are different, so as to cause hydrodynamic lubrication to occur at one of the first or second bearings.Type: GrantFiled: May 23, 2011Date of Patent: April 16, 2013Assignee: LG Electronics Inc.Inventors: Jeongmin Han, Jaechan An, Hongseok Seo, Keunju Lee
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Patent number: 8393152Abstract: An lubricating oil from an oil pump that is driven by rotation of an engine is supplied as a refrigerant to a rotor of an assist motor via a pressure valve. The pressure valve is configured to be closed when the pressure of the lubricating oil is less than a predetermined value, and to open when the pressure of the lubricating oil is greater than or equal to the predetermined value. As a result, when the rotor is in low need for cooling down because the temperature rise of the rotor is small although the rotation speed of the rotor rises, that is, when the engine is operating at a low rotation speed with a high load, the supply of lubricating oil to the rotor is reduced or stopped.Type: GrantFiled: August 20, 2007Date of Patent: March 12, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventor: Hideyuki Nishida
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Publication number: 20130004351Abstract: A fan includes a motor and an impeller. The motor includes a stationary portion and a rotating portion rotatably supported by the stationary portion. The stationary portion includes a stator and a bearing portion arranged inside of the stator. The rotating portion includes a rotor magnet arranged radially outside the stator; a shaft inserted in the bearing portion, and having an upper portion fixed to the impeller directly or through one or more members; and a thrust portion arranged axially opposite the bearing portion, and including an annular surface arranged around the shaft.Type: ApplicationFiled: June 14, 2012Publication date: January 3, 2013Applicant: NIDEC CORPORATIONInventors: Teiichi Hirono, Shinichiro Noda, Yoshiharu Ikegami, Tomohiro Hasegawa, Tomohiro Yoneda, Shunji Matsumoto, Seungsin Yoo, Kouta Kabune
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Publication number: 20120328461Abstract: A bearing that is used in a motor pump in which a liquid is, not only pumped by means of an impeller driven by the pump, but also is used to lubricate components of the motor pump including the motor pump shaft. The bearing is for supporting the shaft at at least one location of the shaft. The bearing is constructed of a bronze material having added thereto a small amount of graphite, preferably around 2.5%.Type: ApplicationFiled: August 29, 2012Publication date: December 27, 2012Applicant: AQUAMOTION, INC.Inventors: Benno Lebkuchner, Hans L. Kuster
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Publication number: 20120257998Abstract: In aspects, the present disclosure provides an apparatus for handling axial thrust in rotating equipment. The apparatus may include a thrust bearing and a runner having a contact surface engaging the thrust bearing. The runner may include passages extending between the contact surface and an opposing surface of the runner. The apparatus may further include a lock ring assembly that has channels in communication with the passages of the runner. In certain embodiments, one or more cavities may be formed on the contact surface of the runner. The cavities may be in communication with the internal passages of the runner. In aspects, the present disclosure provides a method for handling axial thrust in a pump assembly. The pump assembly may include a thrust bearing assembly that may include a runner having a contact surface engaging a thrust bearing pad. The method may include flowing a lubricating fluid to the contact surface using at least one internal passage formed in runner.Type: ApplicationFiled: April 11, 2011Publication date: October 11, 2012Applicant: BAKER HUGHES INCORPORATEDInventors: Larry A. Parmeter, Dan A. Merrill, Michael R. Rumbaugh, Chad A. Craig
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Patent number: 8257063Abstract: A refrigerant compressor is provided that can be assembled easily and can quickly discharge lubricating oil that leaks from contact sliding parts of its mechanical seal so as to prevent the oil from turning into sludge around the stationary ring. In a refrigerant compressor in which a mechanical seal which shaft seals the inner side and the outer side of a housing is installed at a portion of the housing through which a rotating shaft penetrates, a mechanical seal comprises a stationary ring securely fastened to the inner circumferential surface of a boss portion, a rotary ring securely fastened to the outer circumferential surface of the rotating shaft to the inside of the stationary ring so as to face the stationary ring, whereby sliding contact is formed between sides of the stationary ring and the rotary ring.Type: GrantFiled: July 22, 2008Date of Patent: September 4, 2012Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Hajime Sato, Yasuharu Maruiwa, Yoshiyuki Kimata, Yoshiaki Miyamoto
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Publication number: 20120128516Abstract: The present invention relates to a compressor in which a rotary member suspended on a stationary member is rotated to compress the refrigerant. As the rotary member is suspended on a first stationary member and rotatably supported on a second stationary member spaced apart from the first stationary member, components can be easily centered and assembled with the structural stability. In addition, the oil stored in a hermetic container is supplied to a lubrication passage provided between the rotary member and the stationary member. This reduces a friction loss between the components and achieves the operation reliability. Moreover, the oil is easily introduced into a vane mounting hole in which a vane is linearly reciprocated. This reduces the friction and abrasion of the vane and improves the operation reliability.Type: ApplicationFiled: December 2, 2009Publication date: May 24, 2012Inventors: Kang-Wook Lee, Jin-Ung Shin, Geun-Hyung Lee, Seoung-Min Kang
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Publication number: 20120087816Abstract: A cooling fan (1) includes a fan housing (10), a stator (20), a rotor (30) and a bearing assembly (40). A tube (111) extends upwardly from a central portion of the fan housing. The stator is mounted around the tube. The bearing assembly includes a ball bearing (333) and a sleeve bearing (335) received in two ends of the tube, respectively. The rotor has a shaft (336) extending into and roratably supported by the bearing assembly. An elastic element (332) is arranged on the ball bearing to provide a pressing force on the ball bearing toward the sleeve bearing. An oil retaining element (339) is arranged around a bottom end of the shaft and spaced from the shaft. The oil retaining element is attached to the sleeve bearing to provide oil for the sleeve bearing.Type: ApplicationFiled: December 19, 2011Publication date: April 12, 2012Applicants: FOXCONN TECHNOLOGY CO., LTD., FU ZHUN PRECISION INDUSTRY (SHEN ZHEN) CO., LTD.Inventors: YONG-KANG ZHANG, ZHI-YA YANG, YING-LIANG LI
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Patent number: 8142159Abstract: A fan includes a plurality of blades and a motor. The motor includes a hub and a shaft having an end connected to the hub, a bushing, a bearing, and an oil-sealing structure. The blades are connected with and surrounding around the hub. The bushing is for supporting the other end of the shaft, and the bearing is disposed in the bushing and used to telescope the shaft. The shaft passes through the oil-sealing structure. The oil-sealing structure is telescoped to the shaft to fit tightly and the oil-sealing structure includes a main body and a barricade inwardly extending toward the shaft so that the oil-sealing structure is fixedly connected with the bushing.Type: GrantFiled: August 14, 2008Date of Patent: March 27, 2012Assignee: Delta Electronics, Inc.Inventors: Chia-Hsuan Chang, Meng-Yu Chen, Yung-Hao Chiu, Te-Tsai Chuang, Chung-Yuan Tsang, Wei-Pang Huang
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Patent number: 8104298Abstract: A vapor compression system includes a compressor, a condenser, an expansion device and an evaporator. Refrigerant circulates though the closed circuit vapor compression system. Touchdown bearings protect a rotor during power shutdown of the compressor. Liquid refrigerant from the condenser flows along a supply line and lubricates the touchdown bearings. The refrigerant from the touchdown bearings is discharged through an outlet and flows along a discharge line to the evaporator.Type: GrantFiled: December 6, 2005Date of Patent: January 31, 2012Assignee: Carrier CorporationInventor: Vishnu M. Sishtla
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Patent number: 8100673Abstract: A cooling fan (1) includes a fan housing (10), a stator (20), a rotor (30) and a bearing assembly (40). A tube (111) extends upwardly from a central portion of the fan housing. The stator is mounted around the tube. The bearing assembly includes a ball bearing (333) and a sleeve bearing (335) received in two ends of the tube, respectively. The rotor has a shaft (336) extending into and roratably supported by the bearing assembly. An elastic element (332) is arranged on the ball bearing to provide a pressing force on the ball bearing toward the sleeve bearing. An oil retaining element (339) is arranged around a bottom end of the shaft and spaced from the shaft. The oil retaining element is attached to the sleeve bearing to provide oil for the sleeve bearing.Type: GrantFiled: March 27, 2008Date of Patent: January 24, 2012Assignees: Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Foxconn Technology Co., Ltd.Inventors: Yong-Kang Zhang, Zhi-Ya Yang, Ying-Liang Li
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Patent number: 8028524Abstract: A supercharger for an internal combustion engine having an internal reservoir adapted to receive a supply of lubricating oil. An oil slinger is mounted on the impeller shaft for rotation therewith that extends into the reservoir for collecting and slinging lubricating oil onto the supercharger bearings, shafts and the drive and impeller gears. A baffle assembly is carried by the interior of the supercharger housing for controlling the volume and flow of lubricating oil onto said gears and bearings and directing oil flow therefrom back into said reservoir to prevent excessive lubrication buildup on the gears and the deleterious effects that result therefrom.Type: GrantFiled: July 3, 2008Date of Patent: October 4, 2011Assignee: Vortech Engineering, Inc.Inventors: James K. Middlebrook, Michael W. Reagan, Matthew L. Shemenski
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Patent number: 8021131Abstract: A vacuum pump (50) includes a pumping arrangement, a shaft (10) for driving the pumping arrangement, a motor (60) for rotating the shaft (10) and a bearing arrangement supporting the shaft (10) for rotation, the bearing arrangement having a rolling bearing (12), supporting a first portion of the shaft (10), and a thrust bearing (30). The thrust bearing (30) houses a plurality of rolling elements (36) such that they are maintained in bearing contact with an outer race (18) of the rolling bearing (12) and a race (34) of the thrust bearing (30). In this way axial movement of the rolling bearing (12) can be resisted whilst allowing radial movement of the rolling bearing (12).Type: GrantFiled: April 17, 2004Date of Patent: September 20, 2011Assignee: Edwards LimitedInventors: Jennifer Mary Schooling, Barrie Dudley Brewster
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Patent number: 8016571Abstract: A pump end assembly has a centrifugal pump and a motor separated by a chamber. The chamber contains a thrust bearing as well as an intake for the pump. Fluid flowing into the intake flows through the thrust chamber and to the inlet of the pump. Some of the fluid also flows through the thrust bearing for lubricating the thrust bearing.Type: GrantFiled: August 2, 2007Date of Patent: September 13, 2011Assignee: Baker Hughes IncorporatedInventors: Gary W. Speer, Terry W. Shafer, Mark C. James
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Patent number: 7994669Abstract: A motor comprises a base, a rotor, a stator, and a circuit board. The base includes a sleeve. The stator includes at least one fastener. The sleeve has an inclined outer surface. The fastener extends to the circuit board and abuts the inclined outer surface to fasten the circuit board. A fan comprises a base, a hub, a shaft, a circuit board. The base has a sleeve. The hub comprises a plurality of blades disposed outwardly thereof. The shaft connects to the sleeve and is disposed in the hub. The stator has at least one fastener. The sleeve has an inclined outer surface. The fastener extends to the circuit board and abuts against the inclined outer surface to fasten the circuit board.Type: GrantFiled: December 13, 2007Date of Patent: August 9, 2011Assignee: Delta Electronics, Inc.Inventors: Shih-Kai Lin, Ying-Chi Chen
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Publication number: 20110081266Abstract: A bearing includes an axial hole and a plurality of first grooves. The first grooves are formed on the inner wall of the bearing, and extends through the top surface and to the outer wall of the bearing. The lubricant oil originally held in the bearing can be guided to flow around the whole bearing effectively.Type: ApplicationFiled: December 14, 2010Publication date: April 7, 2011Inventors: Wei-Chun HSU, Shun-Chen Chang, Wen-Shi Huang
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Patent number: 7909588Abstract: Portions of the drive system for a piece of rotating equipment are pre-assembled into a subassembly. The subassembly can be held together by a carrier that is fabricated to accept the components in a proper alignment so that the carrier can be installed as a unit. In one embodiment, the carrier becomes a gearbox housing component that is installed, saving the need for individual component alignment. This modular approach allows an assembly having a single part number to apply to a given compressor unit and further allows standardization of air ends of compressors with specific impellers and inlets added to meet requirements of a specific application.Type: GrantFiled: July 12, 2004Date of Patent: March 22, 2011Assignee: Cameron International CorporationInventors: Edward S. Czechowski, Robert Small, John R. Battershell, Robert M. Kolodziej
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Patent number: 7891958Abstract: A pump includes a pump part provided with an impeller having a plurality of blades for sucking and discharging a liquid; a pump case accommodating the pump part; a rotor installed to the impeller to rotate the impeller; a motor part accommodating a stator disposed around an outer periphery of the rotor to drive the rotor and a driving circuit for controlling the stator; a partition member for isolating the motor part from the pump part to protect the motor part therefrom. The pump further includes a reservoir space disposed in the impeller; an extra passage provided between the rotor and the partition member and connected to the reservoir space to introduce the liquid thereto from the blades; and one or more reflux passages, formed at the impeller, for flowing the liquid in the reservoir space back to the blades.Type: GrantFiled: April 12, 2007Date of Patent: February 22, 2011Assignee: Panasonic Electric Works Co., Ltd.Inventors: Toshisuke Sakai, Hidetoshi Ueda
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Patent number: 7854599Abstract: A circulating pump with an electric motor, which comprises a rotor and a stator, is proposed, the rotor being mounted on a spherical bearing which comprises a sliding body with a convex spherical surface and a bearing bushing with a concave spherical surface and which is fluid-lubricated, in which pump a flow system for passing lubricating fluid through a lubricating region between the sliding body and the bearing bushing is separate from a gap between the stator and the rotor.Type: GrantFiled: May 5, 2005Date of Patent: December 21, 2010Assignee: ITT Manufacturing Enterprises, Inc.Inventor: Oliver Laing
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Publication number: 20100284796Abstract: In a pump, a main shaft (16) is rotatably supported by ball bearings (14, 15) in a casing (13) having a suction opening (11) and a discharge opening (12), an impeller (1) is connected to an end of the main shaft (16), and a canned motor (18) rotatably drives the impeller (17) through the main shaft (16). A front shroud (44) is provided at the front side in the axial center direction of the impeller (17), and a rear shroud (45) is provided at the rear side in the axial center direction. A predetermined gap (47) facing the axial direction is formed between the casing (13) and the front shroud (44), and sealing units (48, 49) facing the radial direction are provided between the casing (13) and the front shroud (44). This allows for extended life of the pump.Type: ApplicationFiled: January 16, 2009Publication date: November 11, 2010Applicant: MITSUBISIHI HEAVY INDUSTRIES, LTDInventors: Kimihiko Mitsuda, Yasuharu Yamamoto
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Patent number: 7785082Abstract: A rotating shaft is supported by journal bearings that can support without contacting the rotating shaft itself. Then, one end of both shaft end portions of the rotating shaft has a main impeller installed and the other end is provided with a sub impeller. By utilizing a force being generated by rotation of the main impeller, liquid being pumped (fluid being pumped) is sucked in through a suction port and discharged through a discharge port. On the other hand, by utilizing a force being generated by rotation of the sub impeller, fluid is transported to the journal bearings, thereby having the journal bearings support the rotating shaft.Type: GrantFiled: September 9, 2005Date of Patent: August 31, 2010Assignee: Mitsubishi Heavy Industries, LtdInventors: Kimihiko Mitsuda, Yasuharu Yamamoto, Toshiyuki Osada, Zenichi Yoshida
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Publication number: 20100098564Abstract: A bearing configuration for use in electrical submersible pumps having improved stability. The bearing configuration comprised of a plurality of pads, each able to freely tilt and adjust to the surface of the shaft.Type: ApplicationFiled: October 21, 2008Publication date: April 22, 2010Applicant: Baker Hughes IncorporatedInventors: Larry J. Parmeter, Chad A. Craig
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Patent number: 7674094Abstract: An electric fan includes a fan base (10), a bearing (40) and a rotor assembly (20). The fan base forms a central tube (11) receiving the bearing therein. The rotor assembly includes a fan hub (22), and a pivot axle (23) joined to the fan hub. The pivot axle pivotably extends into the bearing. A sealing lid (60) is screwedly mounted on a bottom opening of the central tube to prevent lubricant oil contained in the central tube from leaking. The sealing lid abuts against a bottom of the bearing to prevent the bearing from deflection.Type: GrantFiled: September 12, 2006Date of Patent: March 9, 2010Assignee: Foxconn Technology Co., Ltd.Inventors: Chin-Wen Yeh, Chin-Long Ku, Hsieh-Kun Lee