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公开(公告)号：US11415135B2
公开(公告)日：2022-08-16
申请号：US16009940
申请日：2018-06-15
摘要： A scroll compressor includes a first scroll member, a second scroll member, and an aerostatic thrust bearing. The aerostatic thrust bearing forms a layer of gas between the second scroll member and a fixed supporting member to support the second scroll member as the second scroll member rotates and/or orbits. Also disclosed is a method of supporting a rotating/orbiting scroll member in a scroll compressor. The method including supplying pressurized gas to an aerostatic thrust bearing such that a layer of gas is formed between the rotating/orbiting scroll member and a fixed supporting member.
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公开(公告)号：US11193507B2
公开(公告)日：2021-12-07
申请号：US16199824
申请日：2018-11-26
发明人： Andrea Vacca , Gabriele Altare
摘要： Methods and apparatus pertaining to positive displacement pumps, and further to hydraulic actuation systems. In some embodiments the pumps are gear pumps with bi-directional operation. In some embodiments the actuation system includes a motor-driven, reversible operation gear pump providing fluid under pressure to a rod and cylinder.
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公开(公告)号：US11022117B2
公开(公告)日：2021-06-01
申请号：US14512992
申请日：2014-10-13
摘要： A variable capacity screw compressor comprises a suction port, at least two screw rotors and a discharge port being configured in relation to a selected rotational speed that operates at least one screw rotor at an optimum peripheral velocity that is independent of a peripheral velocity of the at least one screw rotor at a synchronous motor rotational speed for a rated screw compressor capacity. A motor is configured to drive the at least one screw rotor at a rotational speed at a full-load capacity that is substantially greater than the synchronous motor rotational speed at the rated screw compressor capacity. A variable speed drive receives a command signal from a controller and generates a control signal that drives the motor at the selected rotational speed.
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公开(公告)号：US10890110B2
公开(公告)日：2021-01-12
申请号：US16469154
申请日：2018-04-19
申请人： ISTANBUL TEKNIK UNIVERSITESI , MITOS MIKRODALGA GORUNTULEME SISTEMLERI MUHENDISLIK SANAYI VE TICARET LIMITED SIRKETI
发明人： Guray Ali Canli , Ibrahim Akduman , Ismail Kurtoglu , Mehmet Cayoren , Hasan Ercan , Haluk Ali Yumlu
IPC分类号： F02B55/02 , F01C1/00 , F01C20/28 , F01C21/08 , F01M1/16 , F02B53/10 , F02B53/12 , F02B55/08 , F02B55/14 , F01C1/063 , F01C21/02 , F02B53/00
摘要： An internal combustion engine, includes a 1st rotor having two blades, rotating in the circular volume of the motor body block with variable angular speed; a 2nd rotor having two blades, rotating in the circular volume of the motor body block with variable angular speed, a rolling bearing provided between the 1st rotor and the 2nd rotor enables rotation of the 1st rotor and the 2nd rotor on each other; a 1st unidirectional rolling bearing between the 1st rotor and the back cover enables rotation of the 1st rotor and the 2nd rotor at different times and at different extents; a 3rd unidirectional rolling bearing transferring the 2nd rotor's rotation movements to the output shaft is provided on the internal collar of the 2nd rotor; a 4th unidirectional rolling bearing transferring the 1st rotor's rotation movements to the output shaft is provided on the internal collar of the 1st rotor.
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公开(公告)号：US10858940B1
公开(公告)日：2020-12-08
申请号：US16443259
申请日：2019-06-17
摘要： A pump bearing including a top face, a side face peripherally surrounding the top face, a bottom face opposed to the top face, a first bearing bore projecting from the top face to the bottom face, an edge defined where the top face meets the side face, and an asymmetric pressure balance groove defined within a portion of the edge of the top face and the side face defining first depth from the top face.
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公开(公告)号：US10669850B2
公开(公告)日：2020-06-02
申请号：US15722402
申请日：2017-10-02
申请人： Brian Blackwell
发明人： Brian Blackwell
摘要： An impeller-type liquid ring compressor having a particular bearing configuration. Such a bearing arrangement may completely support the impeller as it rotates, eliminating many of the problems inherent in the prior art designs without changing the general overhung impeller design. This may allow the impeller-type liquid ring compressor to be easily retrofitted in existing use environments, such as, for example, oil and gas processing facilities, oil refineries, and petrochemical processing facilities. In some exemplary embodiments, a thrust bearing may be located on the front face of the impeller, or radial bearings may be disposed between the vanes of the impeller. A radial bearing and thrust bearing may further be disposed on the shaft side of the impeller close to the impeller itself. The compressor may be configured so that the process fluid carries heat away from each of these bearings.
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公开(公告)号：US10359043B2
公开(公告)日：2019-07-23
申请号：US15513144
申请日：2015-09-24
发明人： Toshiyuki Miyatake
摘要： An oil-free screw compressor has a screw rotor including a screw and a shaft, a bearing supporting the shaft, a first shaft seal device disposed between the screw and the bearing and including a first seal opposite to the shaft, and a first communication portion communicating the inner periphery face and the outer peripheral face of the first shaft seal device, a second shaft seal device disposed between the first shaft seal device and the bearing and including a second seal opposite to the shaft, and a second communication portion communicating an inner periphery face and the outer peripheral face of the second shaft seal device, and a casing including an atmosphere communication portion connected to both of the first communication portion and the second communication portion on the inner peripheral face of a shaft accommodation space.
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公开(公告)号：US10352169B2
公开(公告)日：2019-07-16
申请号：US14974192
申请日：2015-12-18
申请人： NABTESCO CORPORATION
发明人： Koji Ito , Atsushi Fukui
摘要： A rotary actuator includes an output shaft, a housing, a piston, and a friction reducer. The housing includes an arcuate bore that extends around the output shaft. The piston is coupled to the output shaft and moved in the arcuate bore. Pressure fluid acts to move the piston. The friction reducer is configured to reduce friction between a peripheral surface of the piston and an inner circumferential surface of the housing forming the arcuate bore.
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公开(公告)号：US10295231B2
公开(公告)日：2019-05-21
申请号：US15347449
申请日：2016-11-09
申请人： Aktiebolaget SKF
IPC分类号： F25B13/00 , F25B31/00 , F01C21/02 , F04C29/02 , F16C33/66 , F04C18/16 , F04C28/08 , F16C19/49 , F16C33/30 , F16C19/54
摘要： A cooling system includes a refrigerant compressor and a first operating medium, which provides a mixture of refrigerant and lubrication oil. An oil separator reduces the percentage of the refrigerant in the operating medium to a value between 25% by weight and 80% by weight.
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公开(公告)号：US10273957B2
公开(公告)日：2019-04-30
申请号：US15427899
申请日：2017-02-08
发明人： Shiho Furuya , Hideyuki Horihata , Hiraku Shiizaki
摘要： In the two-cylinder hermetic compressor, a main bearing is disposed on one surface of a first cylinder, an intermediate plate is disposed on another surface of the first cylinder, the intermediate plate is disposed on one surface of a second cylinder, and an auxiliary bearing is disposed on another surface of the second cylinder. A shaft is constituted by a main shaft portion which has a rotor attached thereto and is supported by the main bearing, a first eccentric portion having a first piston attached thereto, a second eccentric portion having a second piston attached thereto, and an auxiliary shaft portion supported by the auxiliary bearing. A thrust receiving portion is provided on a side of the second eccentric portion facing the auxiliary shaft portion, and the auxiliary bearing is provided with a thrust surface on which the end face of the thrust receiving portion slides while contacting therewith. The thrust surface is provided with a ring groove.
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