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公开(公告)号：US09745973B2
公开(公告)日：2017-08-29
申请号：US14308263
申请日：2014-06-18
Applicant: Panasonic Corporation
Inventor： Ko Inagaki , Akira Nakano , Yoshinori Ishida , Ichiro Morita
CPC classification number: F04B39/023 , F04B35/04 , F04B39/0005 , F04B39/122 , F04B53/008 , F04B53/18 , F16J1/08
Abstract: A hermetic compressor includes a closed vessel for storing lubricating oil, an electric-driving element, and a compressing element driven by the electric-driving element. The compressing element includes a cylinder block forming a compression chamber, a piton that reciprocates inside the compression chamber, and an oiling device for supplying the lubricating oil to an outer circumference of the piston. A first oil groove is concavely formed on the outer circumference of the piston, and a second oil groove is concavely formed on a side opposite to the compression chamber relative to the first oil groove. The second oil groove has a spatial volume same or greater than that of the first oil groove. An expanded clearance portion is provided such that a clearance between the piston and the cylindrical hole portion broadens from a top dead point to a bottom dead point.
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公开(公告)号：US08794933B2
公开(公告)日：2014-08-05
申请号：US13846346
申请日：2013-03-18
Applicant: Panasonic Corporation
Inventor： Ko Inagaki , Akira Nakano , Yoshinori Ishida , Ichiro Morita
CPC classification number: F04B39/023 , F04B35/04 , F04B39/0005 , F04B39/122 , F04B53/008 , F04B53/18 , F16J1/08
Abstract: A hermetic compressor includes a closed vessel for storing lubricating oil, an electric-driving element, and a compressing element driven by the electric-driving element. The compressing element includes a cylinder block forming a compression chamber, a piton that reciprocates inside the compression chamber, and an oiling device for supplying the lubricating oil to an outer circumference of the piston. A first oil groove is concavely formed on the outer circumference of the piston, and a second oil groove is concavely formed on a side opposite to the compression chamber relative to the first oil groove. The second oil groove has a spatial volume same or greater than that of the first oil groove. An expanded clearance portion is provided such that a clearance between the piston and the cylindrical hole portion broadens from a top dead point to a bottom dead point.
Abstract translation: 封闭式压缩机包括用于存储润滑油的密闭容器，电驱动元件和由电驱动元件驱动的压缩元件。 压缩元件包括形成压缩室的气缸体，在压缩室内往复运动的立柱，以及用于将润滑油供给到活塞的外周的供油装置。 第一油槽凹入地形成在活塞的外周上，并且第二油槽相对于第一油槽在与压缩室相对的一侧凹入地形成。 第二油槽具有与第一油槽相同或更大的空间体积。 设置有扩大的间隙部分，使得活塞和圆柱形孔部之间的间隙从上死点扩大到下死点。
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3.发明授权公开(公告)号：US10704541B2
公开(公告)日：2020-07-07
申请号：US14379838
申请日：2013-02-15
Applicant: Panasonic Corporation
Inventor： Yoshinori Ishida , Hirotaka Kawabata , Hiroyuki Fukuhara , Yuichiro Kume , Yoshiyuki Futagami
Abstract: A slide member of the present invention is used in a slide unit which is included in a refrigerant compressor for compressing a refrigerant and provided inside a sealed container which reserves lubricating oil therein. The slide member is provided with an oxide coating film on a surface of a base material. The oxide coating film is configured such that (1) when the base material comprises an iron based material, the oxide coating film has a three-layer structure including a first layer comprising Fe2O3, a second layer comprising Fe3O4, and a third layer comprising FeO in this order from an outermost surface, (2) the oxide coating film has a dense structure having minute concave/convex portions with a height difference which falls within a range of 0.01 μm to 0.1 μm, or (3) when the base material comprises the iron based material, the oxide coating film has a three-layer structure in which the three layers comprise the iron oxides and are different in hardness.
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