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公开(公告)号：US10890363B2
公开(公告)日：2021-01-12
申请号：US15757934
申请日：2016-08-26
Inventor： Shingo Oyagi , Yoshinori Ishida , Hirotaka Kawabata , Hiroyuki Fukuhara
Abstract: A refrigerant compressor reserves lubricating oil in a sealed container, and accommodates therein an electric component, and a compression component which is driven by the electric component and compresses a refrigerant. At least one of slide members included in the compression component is made of an iron-based material, and an oxide coating film comprising a composition A portion, a composition B portion, and a composition C portion is provided on a slide surface of the iron-based material. The composition A portion is a portion containing diiron trioxide (Fe2O3) which is more in quantity than other substances, and is, for example, an outermost portion (160a). The composition B portion is a portion containing triiron tetraoxide (Fe3O4) which is more in quantity than other substances and containing a silicon (Si) compound, and is, for example, an intermediate portion (160b). The composition C portion is a portion containing triiron tetraoxide (Fe3O4) which is more in quantity than other substances and containing silicon (Si) which is more in quantity than silicon (Si) of the composition B portion, and is, for example, an inner portion (160c).
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2.发明授权公开(公告)号：US09482231B2
公开(公告)日：2016-11-01
申请号：US14410951
申请日：2013-10-22
Inventor： Shingo Oyagi , Hirofumi Yoshida , Hiroaki Nakai , Yu Shiotani , Ryuichi Ohno , Tsuyoshi Karino
IPC: F03C2/00 , F03C4/00 , F04C2/00 , F04C15/00 , F04C29/02 , F04C18/32 , F04C27/00 , F04B39/02 , F04C29/00 , F04C18/356 , F04C23/00
CPC classification number: F04C29/02 , F04B39/02 , F04C18/322 , F04C18/3564 , F04C23/008 , F04C27/001 , F04C29/00 , F04C29/028 , F04C2210/268 , F04C2240/50
Abstract: A compression element includes a substantially spiral oil groove which is provided in inner peripheral surfaces of bearings and of the shaft. One end of the oil groove opens at a bearing base portion, and the other end of the oil groove opens at a bearing end. According to this configuration, oil in a gap between the shaft and inner peripheries of the bearings and forcibly discharges, into the hermetic container, gas bubbles generated in a sliding gap between the shaft and the bearings and by action of a viscosity pump generated by the substantially spiral oil groove, and it is possible to provide a rotary compressor capable of preventing seizing and wearing caused by gas-involvement at a bearing sliding portion, and capable of securing reliability when refrigerant including R32 is used.
Abstract translation: 压缩元件包括设置在轴承和轴的内周面中的大致螺旋形的油槽。 油槽的一端在轴承基部开口，油槽的另一端在轴承端开口。 根据该结构，轴与轴承的内周之间的间隙中的油被强制地排出到密封容器中，在轴与轴承之间的滑动间隙中产生的气泡和由 基本上是螺旋形的油槽，并且可以提供一种旋转式压缩机，能够防止在轴承滑动部分引起气体的咬合和磨损，并且能够在使用含有R32的制冷剂时确保可靠性。
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Patent Agency Ranking
公开(公告)号：US10914010B2
公开(公告)日：2021-02-09
申请号：US16462110
申请日：2017-11-27
Inventor： Yoshinori Ishida , Shingo Oyagi
Abstract: A refrigerant compressor includes: an electric component; and a compression component driven by the electric component to compress a refrigerant. At least one sliding member constituting the compression component is made of a base material (185) that is an iron-based material. An abrasion resistance film (180) including a surface layer constituted by at least fine crystals is formed on a sliding surface of the sliding member. The surface layer (181) includes an A portion in which a component contained most is diiron trioxide (Fe2O3). The A portion exists within a range of at least 0.3 μm or less from an outermost surface of the sliding surface. The abrasion resistance film (180) may include at least one intermediate layer (182 to 184) located between the surface layer (181) and the base material (185). With this, self-abrasion resistance of the sliding member can be improved, so that the refrigerant compressor having excellent reliability and efficiency can be obtained.
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公开(公告)号：US10760563B2
公开(公告)日：2020-09-01
申请号：US15757620
申请日：2016-08-26
Inventor： Yoshinori Ishida , Shingo Oyagi , Hiroyuki Fukuhara , Hirotaka Kawabata
Abstract: A refrigerant compressor reserves lubricating oil with a viscosity of VG2 to VG100 in a sealed container, and accommodates therein an electric component and a compression component which is driven by the electric component and compresses a refrigerant. The compression component includes at least one slide member comprising a base material 171 made of an iron-based material and an oxide coating film 170 provided on a surface of the base material 171. The oxide coating film 170 includes: a portion containing diiron trioxide (Fe2O3), in a region which is closer to an outermost surface of the oxide coating film; and a silicon containing portion containing silicon (Si) which is more in quantity than silicon (Si) of the base material 171, in a region which is closer to the base material 171.
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公开(公告)号：US10233929B2
公开(公告)日：2019-03-19
申请号：US15118857
申请日：2015-06-08
Inventor： Hiroaki Nakai , Hirofumi Yoshida , Shingo Oyagi , Yu Shiotani , Tsuyoshi Karino
Abstract: A rotary compressor having two cylinders includes crankshaft having first eccentric portion and second eccentric portion connected to each other by connecting portion. The rotary compressor further includes two compressive elements that compress working fluid in cylinder as first piston inserted over first eccentric portion eccentrically rotates in accordance with rotation of crankshaft. Further, first piston inserted over first eccentric portion undergoes assembly by being inserted over first eccentric portion through second eccentric portion. Further, a releasing portion is provided at each of outer diameter portions of first eccentric portion and second eccentric portion.
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公开(公告)号：US10895408B2
公开(公告)日：2021-01-19
申请号：US16074670
申请日：2017-02-10
Inventor： Yoshinori Ishida , Shingo Oyagi
IPC: F04B15/08 , F25B31/00 , C10M125/02 , C10M171/00 , F25B31/02 , F04B39/02 , F04C29/00 , C09K5/04 , F04B17/03 , F04B39/00 , F25B1/02 , F25D17/06 , C10N20/02 , C10N20/06 , C10N20/00 , C10N30/06 , C10N40/30
Abstract: Refrigerant compressor includes electromotive element, and compression element that is driven by electromotive element, includes a slider, and compresses a refrigerant. Freezer oil that lubricates the slider is added with fullerene having a diameter that ranges from 100 pm to 10 nm.
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公开(公告)号：US10233930B2
公开(公告)日：2019-03-19
申请号：US16003991
申请日：2018-06-08
Inventor： Hiroaki Nakai , Hirofumi Yoshida , Shingo Oyagi , Yu Shiotani , Tsuyoshi Karino
Abstract: A rotary compressor having two cylinders includes crankshaft having first eccentric portion and second eccentric portion connected to each other by connecting portion. The rotary compressor further includes two compressive elements that compress working fluid in cylinder as first piston inserted over first eccentric portion eccentrically rotates in accordance with rotation of crankshaft. Further, first piston inserted over first eccentric portion undergoes assembly by being inserted over first eccentric portion through second eccentric portion. Further, a releasing portion is provided at each of outer diameter portions of first eccentric portion and second eccentric portion.
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