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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
摘要： 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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公开(公告)号：US11143442B2
公开(公告)日：2021-10-12
申请号：US16347149
申请日：2017-11-16
发明人： Yoshinori Ishida , Noboru Iida , Ko Inagaki , Hiroyuki Kawano
IPC分类号： F25B31/02
摘要： The present invention includes: an electric component; a compression component driven by the electric component; and a sealed container accommodating the electric component and the compression component. The compression component includes: a shaft part rotated by the electric component; and a bearing part slidingly contacting the shaft part. A film having hardness equal to or more than hardness of a sliding surface of the bearing part is provided on a sliding surface of the shaft part. The sliding surface of the bearing part includes a curved-surface portion having an inner diameter that continuously increases, or the sliding surface of the shaft part includes a curved-surface portion having an outer diameter that continuously decreases.
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公开(公告)号：US10914010B2
公开(公告)日：2021-02-09
申请号：US16462110
申请日：2017-11-27
发明人： Yoshinori Ishida , Shingo Oyagi
摘要： 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
摘要： 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：US11959670B2
公开(公告)日：2024-04-16
申请号：US17459151
申请日：2021-08-27
发明人： Yoshinori Ishida , Noboru Iida , Ko Inagaki , Hiroyuki Kawano
IPC分类号： F25B31/02
CPC分类号： F25B31/026
摘要： The present invention includes: an electric component; a compression component driven by the electric component; and a sealed container accommodating the electric component and the compression component. The compression component includes: a shaft part rotated by the electric component; and a bearing part slidingly contacting the shaft part. A film having hardness equal to or more than hardness of a sliding surface of the bearing part is provided on a sliding surface of the shaft part. The sliding surface of the bearing part includes a curved-surface portion having an inner diameter that continuously increases, or the sliding surface of the shaft part includes a curved-surface portion having an outer diameter that continuously decreases.
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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
发明人： Yoshinori Ishida , Shingo Oyagi
IPC分类号： 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
摘要： 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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