Patents by Inventor Shingo Oyagi

Shingo Oyagi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10914010
    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 ?m 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.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: February 9, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoshinori Ishida, Shingo Oyagi
  • Patent number: 10895408
    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.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: January 19, 2021
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yoshinori Ishida, Shingo Oyagi
  • Patent number: 10890363
    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).
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: January 12, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Shingo Oyagi, Yoshinori Ishida, Hirotaka Kawabata, Hiroyuki Fukuhara
  • Patent number: 10865782
    Abstract: A refrigerant compressor comprises 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. An oxide coating film (150) is provided on a slide surface of the iron-based material, the oxide coating film including a first portion (151), a second portion (152), and/or a third portion (153). The first portion (151) contains at least fine crystals (155). The second portion (152) contains columnar grains (156). The third portion (153) contains layered grains (157).
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: December 15, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoshinori Ishida, Shingo Oyagi, Hiroyuki Fukuhara, Hirotaka Kawabata
  • Patent number: 10760563
    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.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: September 1, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoshinori Ishida, Shingo Oyagi, Hiroyuki Fukuhara, Hirotaka Kawabata
  • Publication number: 20200270541
    Abstract: An oxide film (170) is formed on a surface of a base material (175) that is a sintered body constituted by an iron-based material. The oxide film (170) includes a first layer (171), a second layer (172), and a third layer (173). The first layer (171) is located on an outermost surface and is constituted by at least fine crystals. The second layer (172) is located under the first layer (171) and contains columnar structures. The third layer (173) contains columnar structures and is provided on the second layer (172) through an interface (174) so as to be located close to the base material (175). The first layer (171) includes a dense layer (171a). The oxide film (170) can exhibit satisfactory abrasion resistance.
    Type: Application
    Filed: November 27, 2017
    Publication date: August 27, 2020
    Inventors: Shingo OYAGI, Yoshinori ISHIDA, Hirotaka KAWABATA, Hiroto HAYASHI
  • Publication number: 20200149520
    Abstract: A sealed refrigerant compressor (100) includes: a compression element (107) accommodated in a sealed container (101) and configured to compress a refrigerant; and an electric element (106) configured to drive the compression element (107). Lubricating oil (103) is stored in the sealed container (101). A resin member is included as a member accommodated in the sealed container (101). The amount of oligomer contained in the resin member is 2.5 wt. % or less of an entire weight of the resin member. Kinetic viscosity of the lubricating oil 103 at 40° C. falls within a range of 0.1 to 5.1 mm2/s. A flash point of the lubricating oil 103 is 110° C. or more.
    Type: Application
    Filed: April 26, 2018
    Publication date: May 14, 2020
    Applicant: Panasonic Appliances Refrigeration Devices Singapore
    Inventors: Shingo OYAGI, Hirotaka KAWABATA, Hiroto HAYASHI
  • Publication number: 20200141616
    Abstract: A sealed refrigerant compressor (100) includes: a compression element (107) accommodated in a sealed container (101) and configured to compress a refrigerant; and an electric element (106) configured to drive the compression element (107). Lubricating oil (103) is stored in the sealed container (101). The lubricating oil (103) is mixed oil constituted by at least mineral oil and synthetic oil. Kinetic viscosity of the lubricating oil (103) at 40° C. falls within a range of 0.1 to 5.1 mm2/s, and a flash point of the lubricating oil (103) is 110° C. or more.
    Type: Application
    Filed: April 26, 2018
    Publication date: May 7, 2020
    Applicant: Panasonic Appliances Refrigeration Devices Singapore
    Inventors: Shingo OYAGI, Hirotaka KAWABATA, Hiroto HAYASHI
  • Publication number: 20190330747
    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 ?m 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.
    Type: Application
    Filed: November 27, 2017
    Publication date: October 31, 2019
    Inventors: Yoshinori ISHIDA, Shingo OYAGI
  • Publication number: 20190285063
    Abstract: Inside a sealed container (101) of a refrigerant compressor (100), lubricating oil (103) having a kinematic viscosity at 40° C. of 0.1 mm2/S to 5.1 mm2/S is stored, and an electric element (106) and a compression element (107) are accommodated. The compression element (107) is provided with, as a shaft part, a crankshaft (108) comprising a main shaft (109) and an eccentric shaft (110), and as bearing parts, a main bearing (114) that axially supports the main shaft (109) and an eccentric bearing (119) that axially supports the eccentric shaft (110). At least one surface of the main shaft (109) and the eccentric shaft (110) is subjected to a surface treatment, e.g., formation of an oxide film, having a hardness equal to or greater than that of a bearing part (the main bearing (114) or the eccentric bearing (119)). Satisfactory reliability in sliding parts can thereby be achieved even if lubricating oil having lower viscosity is used.
    Type: Application
    Filed: November 28, 2017
    Publication date: September 19, 2019
    Applicant: Panasonic Appliances Refrigeration Devices Singapore
    Inventors: Yasushi HAYASHI, Hirotaka KAWABATA, Yoshinori ISHIDA, Shingo OYAGI, Terumasa IDE, Akio YAGI, Hironari AKASHI, Hiroto HAYASHI, Kazuhiro YOKOTA, Hiroki TORIMASU
  • Patent number: 10233930
    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.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: March 19, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hiroaki Nakai, Hirofumi Yoshida, Shingo Oyagi, Yu Shiotani, Tsuyoshi Karino
  • Patent number: 10233929
    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.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: March 19, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hiroaki Nakai, Hirofumi Yoshida, Shingo Oyagi, Yu Shiotani, Tsuyoshi Karino
  • Publication number: 20190032971
    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.
    Type: Application
    Filed: February 10, 2017
    Publication date: January 31, 2019
    Inventors: Yoshinori ISHIDA, Shingo OYAGI
  • Publication number: 20180340527
    Abstract: A refrigerant compressor comprises 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. An oxide coating film (150) is provided on a slide surface of the iron-based material, the oxide coating film including a first portion (151), a second portion (152), and/or a third portion (153). The first portion (151) contains at least fine crystals (155). The second portion (152) contains columnar grains (156). The third portion (153) contains layered grains (157).
    Type: Application
    Filed: August 26, 2016
    Publication date: November 29, 2018
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yoshinori ISHIDA, Shingo OYAGI, Hiroyuki FUKUHARA, Hirotaka KAWABATA
  • Publication number: 20180340717
    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).
    Type: Application
    Filed: August 26, 2016
    Publication date: November 29, 2018
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shingo OYAGI, Yoshinori ISHIDA, Hirotaka KAWABATA, Hiroyuki FUKUHARA
  • Publication number: 20180291899
    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.
    Type: Application
    Filed: June 8, 2018
    Publication date: October 11, 2018
    Inventors: Hiroaki NAKAI, Hirofumi YOSHIDA, Shingo OYAGI, Yu SHIOTANI, Tsuyoshi KARINO
  • Publication number: 20180245576
    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.
    Type: Application
    Filed: August 26, 2016
    Publication date: August 30, 2018
    Inventors: Yoshinori ISHIDA, Shingo OYAGI, Hiroyuki FUKUHARA, Hirotaka KAWABATA
  • Publication number: 20180245637
    Abstract: An oxide coating film provided on a surface of an iron-based material which is a base material of a slide member has one of the following configurations: (1) the oxide coating film comprising 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, in a region which is closer to the base material, (2) the oxide coating film comprising: a composition A portion containing diiron trioxide (Fe2O3) which is more in quantity than other substances; a composition B portion containing triiron tetraoxide (Fe3O4) which is more in quantity than other substances and containing a silicon (Si) compound; and a composition C 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 (3) the oxide coa
    Type: Application
    Filed: August 26, 2016
    Publication date: August 30, 2018
    Inventors: Shingo OYAGI, Yoshinori ISHIDA, Hirotaka KAWABATA, Hiroyuki FUKUHARA, Hiroto HAYASHI
  • Publication number: 20170167487
    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.
    Type: Application
    Filed: June 8, 2015
    Publication date: June 15, 2017
    Inventors: HIROAKI NAKAI, HIROFUMI YOSHIDA, SHINGO OYAGI, YU SHIOTANI, TSUYOSHI KARINO
  • Publication number: 20170009759
    Abstract: A synthetic resin film is formed on a region of a valve plate (117) which is brought into contact with an arm portion of a suction valve (120) or a region of the valve plate (117) which is brought into contact with an arm portion of a discharge valve (121). With such a configuration, delay in opening of the suction valve (120) or the discharge valve (121) caused by adhesion force of refrigerating oil is suppressed so that a pressure loss in a suction stroke or a discharge stroke can be reduced whereby compressor efficiency is enhanced. Further, a striking sound generated at the time of closing the suction valve (120) or the discharge valve (121) is reduced by an elastic effect of the synthetic resin film so that the reduction of noises is realized.
    Type: Application
    Filed: June 18, 2015
    Publication date: January 12, 2017
    Inventors: Shingo OYAGI, Yoshinori ISHIDA, Yoshiyuki FUTAGAMI