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公开(公告)号：US11603861B2
公开(公告)日：2023-03-14
申请号：US16613080
申请日：2018-05-09
发明人： Lafaete Creomar Lima, Jr. , Anderson Moita Witka , Eduardo Wong Cardoso , Heloisa Helena da Silva Folhadella
IPC分类号： F04D29/58 , F04F5/04 , F04F5/54 , F04D13/08 , F04D7/04 , H02K5/132 , F04F5/16 , F01P5/02 , F04F5/20
摘要： A system for the recirculation of gas in air gaps of rotating machines via an ejector, a motor and a pump, including circulating a gas extracted from a gas-extraction unit which is located in the pump. This gas circulates in the gap between the rotors and the stator of the motor. The rotor of the motor is coupled to the shaft of the pump, and in one or more embodiments the gas from the gas-extraction unit flows from the pump to the ejector in order to be injected into the air gap between the rotor and the stator, thereafter returning to a process line. In one or more embodiments, the gas from the gas-extraction unit flows from the pump, and is injected directly into the air gap, and thereafter passes via the ejector in order to recirculate the gas to the process line.
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公开(公告)号：US10344777B2
公开(公告)日：2019-07-09
申请号：US14908587
申请日：2014-07-25
申请人： DENSO CORPORATION
发明人： Eitaro Tanaka , Toru Takahashi , Satoshi Inoue , Haruyuki Nishijima , Etsuhisa Yamada , Yoichiro Kawamoto
IPC分类号： F04F5/04 , F04F5/46 , F04F5/44 , F04F5/48 , F25B41/00 , F25B41/06 , F04F5/16 , F25B27/00 , F25B40/02
摘要： In an ejector, formed in a body is a swirling space which lets a high-pressure refrigerant flowing from a refrigerant inlet port swirl and introduces the swirling high-pressure refrigerant into a depressurizing space in which the swirled high-pressure refrigerant is depressurized and expanded. A passage formation member that defines a nozzle passage and a diffuser passage is shaped to have a cross-sectional area increasing with distance from the depressurizing space. Further, a temperature sensing unit of a drive device that displaces the passage formation member is housed in the body, and the temperature sensing unit and a diaphragm have annular shapes to surround at least the axial line of the passage formation member.
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公开(公告)号：US10330123B2
公开(公告)日：2019-06-25
申请号：US14908598
申请日：2014-07-25
申请人： DENSO CORPORATION
摘要： In an ejector, a substantially conical passage formation member is disposed in the interior of a body forming a space therein to define a nozzle passage functioning as a nozzle, a mixing passage in which an ejection refrigerant ejected from the nozzle passage and a suction refrigerant drawn from a suction passage are mixed together, and a diffuser passage that converts a kinetic energy of the refrigerant that has flowed out of the mixing passage into a pressure energy, between an inner peripheral surface of the body and the passage formation member. The passage formation member is configured so that a spread angle of a portion forming an outlet side of the nozzle passage is smaller than a spread angle of a portion forming an inlet side of the nozzle passage in a cross-section parallel to an axial direction of the passage formation member.
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公开(公告)号：US20190041101A1
公开(公告)日：2019-02-07
申请号：US16073889
申请日：2017-01-24
申请人： DENSO CORPORATION
发明人： Haruyuki NISHIJIMA , Yoshiaki TAKANO , Yoshiyuki YOKOYAMA , Hiroshi OSHITANI , Yohei NAGANO , Ryota NAKASHIMA
摘要： An ejector includes a body including an inflow space into which a refrigerant flows, a passage formation member disposed inside the body and having a conical shape, and a nozzle passage having an annular cross section functioning as a nozzle and a diffuser passage having an annular cross section functioning as a pressurizing portion between an inner wall surface of the body and a conical lateral surface of the passage formation member. A drive mechanism that displaces the passage formation member along a center axis is coupled to an upstream actuating bar which extends from the passage formation member toward the inflow space and is slidably supported by the body. A largest outer diameter portion of an annular member forming a wall surface of the nozzle passage provides a throat portion functioning as an edge for enlarging a passage cross-sectional area to cause a separation vortex in the refrigerant.
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公开(公告)号：US10184704B2
公开(公告)日：2019-01-22
申请号：US15554549
申请日：2016-02-26
申请人： DENSO CORPORATION
IPC分类号： F04F5/04 , F25B41/04 , F04F5/44 , F04F5/48 , F04F5/46 , F04F5/54 , F04F5/42 , F25B1/08 , F25B19/00
摘要： An ejector includes a nozzle, a swirl flow generation portion, a body including a refrigerant suction port and a diffuser portion, a passage forming member, and an actuation device moving the passage forming member. A nozzle passage is defined between the nozzle and the passage forming member. A smallest passage cross-sectional area portion is provided in the nozzle passage. A swirl space that has a shape of a revolution and is coaxial with the nozzle, and a refrigerant inflow passage through which the refrigerant flows into the swirl space are defined in the swirl flow generation portion. The ejector further includes an area adjustment device that changes the passage cross-sectional area of the refrigerant inflow passage. According to this, an efficiency of energy conversion in the nozzle passage can be improved.
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公开(公告)号：US10077923B2
公开(公告)日：2018-09-18
申请号：US14651498
申请日：2013-11-28
申请人： DENSO CORPORATION
CPC分类号： F25B1/06 , F04F5/04 , F04F5/461 , F25B9/08 , F25B41/00 , F25B41/06 , F25B2341/001 , F25B2341/0012
摘要： An ejector includes a body part having a depressurizing space in which a refrigerant flowing out of a swirling space is depressurized, a suction passage that draws a refrigerant from an external, and a pressurizing space in which the refrigerant from the depressurizing space is mixed with the refrigerant from the suction passage, a conical passage formation member that is arranged in the body part, and a driving device that displaces a nozzle body of the body part forming the depressurizing space. A nozzle passage is defined on an outer peripheral side of the passage formation member in the depressurizing space, a diffuser passage is formed on an outer peripheral side of the passage formation member in the pressurizing space, and an actuating bar that couples the driving device with the nozzle body is arranged without crossing the diffuser passage.
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公开(公告)号：US09803802B2
公开(公告)日：2017-10-31
申请号：US14402858
申请日：2013-05-22
CPC分类号： F17C5/06 , F04B25/005 , F04B39/0011 , F04F5/04 , F04F99/00 , F17C2227/0157 , F17C2227/0192
摘要： A method of compressing gas includes maintaining a volume of gas at a first pressure within a first chamber. Pressurized liquid is forced into the first chamber through a nozzle having a curved profile. Based on the Coanda effect, the liquid compresses the volume of gas to a second pressure greater than the first pressure. The liquid is separated from the gas in a second chamber while maintaining the gas at the second pressure to provide compressed, dry gas.
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公开(公告)号：US20170248160A1
公开(公告)日：2017-08-31
申请号：US15055678
申请日：2016-02-29
CPC分类号： F04F5/463 , F04F5/04 , F24F1/022 , F25B13/00 , F25B31/00 , F25B41/00 , F25B2313/0233 , F25B2313/0253 , F25B2341/0011 , F25B2400/23
摘要： An ejector for a sealed system includes a motive liquid passage with a converging section, a throat and a diverging section. The throat of the motive liquid passage is disposed between the converging section of the motive liquid passage and the diverging section of the motive liquid passage. The ejector also includes a plurality of nucleation sites at the converging section of the motive liquid passage.
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公开(公告)号：US09457872B2
公开(公告)日：2016-10-04
申请号：US15019841
申请日：2016-02-09
CPC分类号： B63B1/38 , B63B2001/387 , F04D17/16 , F04F5/04 , F04F5/44 , F04F5/461 , Y02T70/122
摘要： This present invention is a more economical method and apparatus for compressing gas or other compressible fluids in high volumes at any desired pressures for any desired purpose. One preferred use is for generating high volumes of air capable to be delivered at any drafts for the purpose of lubricating ships motions and accordingly lowering their drag, fuel consumption and harmful emissions.
摘要翻译： 本发明是一种更经济的方法和装置，用于以任何期望的压力将气体或其它可压缩流体以大体积压缩，用于任何所需目的。 一个优选的用途是用于产生能够以任何吃水通过的大量空气，用于润滑船舶运动，并因此降低其阻力，燃料消耗和有害排放。
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公开(公告)号：US20140030118A1
公开(公告)日：2014-01-30
申请号：US13791454
申请日：2013-03-08
IPC分类号： F04F5/04
摘要： This present invention is a method and apparatus for drag reduction for a nautical vessel. The nautical vessel produces air bubbles and interposes the air bubbles between the exterior of the hull of a nautical vessel and the body of water that the vessel is moving through. Rather than utilizing an air compressor or other external energy source, the compressed air is generated from the movement of the vessel and is released where needed in order to reduce drag on the vessel.
摘要翻译： 本发明是用于航海船舶减阻的方法和装置。 航海船只产生气泡，并将气泡插入船舶外壳与船只移动通过的水体之间。 压缩空气不是利用空气压缩机或其他外部能量来源，而是由容器的运动产生，并且在需要时被释放以减少容器上的阻力。
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