Patents by Inventor Shigeyuki Yorikane
Shigeyuki Yorikane 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).
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Publication number: 20220243731Abstract: A position information antenna 22b receives a position signal including position information about a sending source (satellite, base station, or the like) of a positioning radio wave. A communication antenna 22a transmits position information about a compressor 100 (air compressor) that compresses the air and receives meteorological information corresponding to the position of the compressor 100 from a server on a cloud. A controller 13 specifies the position of the compressor 100 from the position signal received by the position information antenna 22b and controls the compressor 100 on the basis of the meteorological information corresponding to the position of the compressor 100 received by the communication antenna 22a.Type: ApplicationFiled: May 13, 2020Publication date: August 4, 2022Inventors: Kenji MORITA, Shigeyuki YORIKANE, Masahiko TAKANO
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Patent number: 11359626Abstract: Provided is a liquid supply mechanism including: a plurality of liquid supply sections each including a plurality of branch paths whose central axes intersect with each other, and a supply path having a side surface to which the plurality of branch paths of the plurality of liquid supply sections are directly connected, respectively, and supplying liquid, which is supplied from an upstream, to the branch paths.Type: GrantFiled: December 4, 2018Date of Patent: June 14, 2022Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Kotaro Chiba, Masahiko Takano, Shigeyuki Yorikane, Kenji Morita, Yoshitaka Takeuchi
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Patent number: 11313370Abstract: A liquid-injected screw compressor includes: a casing that houses a screw rotor and a bearing, and has a suction port and a suction chamber connected to the suction port; a suction throttle valve that is installed at the suction port, and has a housing; and an intake-gas bypass system that establishes communication between a primary side and a secondary side of the suction throttle valve. The intake-gas bypass system includes: an intake-gas bypass flow path that is provided in a wall section of the housing, and has a primary-side opening section opening into the primary side of the suction throttle valve, and a secondary-side opening section opening into the secondary side of the suction throttle valve; and a first check valve arranged in the intake-gas bypass flow path. The intake-gas bypass flow path has an external opening section that opens to an outside of the housing and that allows insertion and withdrawal of the first check valve.Type: GrantFiled: November 14, 2018Date of Patent: April 26, 2022Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Masahiko Takano, Shigeyuki Yorikane
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Publication number: 20220049700Abstract: A screw compressor is provided which can reduce the pressure loss in a suction flow passage. A casing 12 of the screw compressor includes a bore 21 that accommodates a lobed portion 13A of a male rotor 11A and a lobed portion 13B of a female rotor 11B therein such that working chambers are formed in lobe grooves of the lobed portions, a suction port 22 located on an outer side in a rotor radial direction, and a suction flow passage 23 that communicates in a rotor axial direction with working chambers that are in a suction stroke. The suction flow passage 23 includes a male rotor side suction flow passage 26A located on an male rotor 11A side and besides on a downstream side with respect to a virtual plane C, and a female rotor side suction flow passage 26B located on an female rotor 11B side and besides on the downstream side with respect to the virtual plane C.Type: ApplicationFiled: October 1, 2019Publication date: February 17, 2022Inventors: Kotaro CHIBA, Masahiko TAKANO, Shigeyuki YORIKANE, Kenji MORITA
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Patent number: 11231036Abstract: A screw compressor includes a screw rotor, a casing, and a fluid supply portion to supply fluid in a membrane form into a compression chamber in the casing. The screw rotor has a male and female rotors. A male bore covering the male rotor and a female bore covering the female rotor are formed on the inner surface of the casing. An intersection line, on a higher pressure side, of the male and female bores is defined as a compression cusp. In a bore development view, a trajectory made by the first intersection of an extension line of a female lobe ridge and a male lobe ridge being moved, along with the rotation of the male and female rotors, is defined as a trajectory line. An opening of the fluid supply section to the compression chamber is positioned between the compression cusp and the trajectory line.Type: GrantFiled: August 6, 2018Date of Patent: January 25, 2022Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Kotaro Chiba, Masahiko Takano, Shigeyuki Yorikane, Kenji Morita, Yoshitaka Takeuchi, Minako Kanada
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Publication number: 20220003236Abstract: The liquid level of a liquid supply type compressor including a gas-liquid separator is dynamically monitored. A liquid supply type gas compressor includes a compressor body of a liquid supply type; a gas-liquid separator that separates a liquid from a compressed gas, which is discharged, to store the liquid; a liquid piping system that supplies the liquid stored to the compressor body; an internal pipe that extends in an internal space of the gas-liquid separator, and includes at least two hole portions, of which disposition positions are different from each other in a height direction, on an internal space side to communicate with the liquid piping system; and a detector that detects a pressure or a temperature of a fluid flowing through the liquid piping system.Type: ApplicationFiled: March 26, 2019Publication date: January 6, 2022Inventors: Kenji MORITA, Masahiko TAKANO, Shigeyuki YORIKANE
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Publication number: 20210388835Abstract: A simpler notification is given about identifying causes of abnormalities and indicating dealing methods or countermeasures to deal with the causes of abnormalities.Type: ApplicationFiled: September 11, 2019Publication date: December 16, 2021Inventors: Kenji MORITA, Masahiko TAKANO, Shigeyuki YORIKANE, Yoshitaka TAKEUCHI
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Publication number: 20210381510Abstract: A screw compressor includes plural screw rotors, plural suction-side bearings that each rotatably support the suction side of the plural screw rotors and plural discharge-side bearings that each rotatably support the discharge side of the plural screw rotors, and a casing that houses the plural screw rotors, the plural suction-side bearings, and the plural discharge-side bearings. Each screw rotor includes a lobe section with plural lobes and a suction-side shaft section and a discharge-side shaft section each disposed at both ends of the lobe section. The casing has a housing chamber that houses the lobe sections of the plural screw rotors and a lubrication path in which liquid that lubricates the plural suction-side bearings circulates. In the lubrication path, respective passages to lubricate each of the plural suction-side bearings are connected in series and a most downstream part is connected to the housing chamber.Type: ApplicationFiled: September 4, 2019Publication date: December 9, 2021Inventors: Kotaro CHIBA, Masahiko TAKANO, Shigeyuki YORIKANE, Kenji MORITA
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Publication number: 20210088045Abstract: Provided is a liquid supply mechanism including: a plurality of liquid supply sections each including a plurality of branch paths whose central axes intersect with each other, and a supply path having a side surface to which the plurality of branch paths of the plurality of liquid supply sections are directly connected, respectively, and supplying liquid, which is supplied from an upstream, to the branch paths.Type: ApplicationFiled: December 4, 2018Publication date: March 25, 2021Inventors: Kotaro CHIBA, Masahiko TAKANO, Shigeyuki YORIKANE, Kenji MORITA, Yoshitaka TAKEUCHI
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Publication number: 20210017988Abstract: A technique is provided that can further reduce power at the time of “unload operation control” in a gas compressor that generates a compressed gas at a set pressure by constant-speed control. The gas compressor includes a compressor main unit, a drive source, an intake throttle valve, a gas release valve, rotation speed converting means, a pressure detecting device that detects a discharge pressure, and a controller that, the relationship between an upper-limit pressure H and a lower-limit pressure L being H>L, carries out opening the intake throttle valve and closing the gas release valve and operating the drive source at a full-load rotation speed until the discharge pressure reaches the upper-limit pressure H. The controller carries out at least one of closing the intake throttle valve and opening the gas release valve to reduce the discharge pressure to within a predetermined range when the discharge pressure reaches the upper-limit pressure H.Type: ApplicationFiled: March 26, 2019Publication date: January 21, 2021Inventors: Masakazu HASE, Hideharu TANAKA, Akira IYOZUMI, Masahiko TAKANO, Kenji MORITA, Shigeyuki YORIKANE, Takashi NAKAJIMA, Yoshihiko SAGAWA
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Publication number: 20200386231Abstract: A liquid-injected screw compressor includes: a casing that houses a screw rotor and a bearing, and has a suction port and a suction chamber connected to the suction port; a suction throttle valve that is installed at the suction port, and has a housing; and an intake-gas bypass system that establishes communication between a primary side and a secondary side of the suction throttle valve. The intake-gas bypass system includes: an intake-gas bypass flow path that is provided in a wall section of the housing, and has a primary-side opening section opening into the primary side of the suction throttle valve, and a secondary-side opening section opening into the secondary side of the suction throttle valve; and a first check valve arranged in the intake-gas bypass flow path. The intake-gas bypass flow path has an external opening section that opens to an outside of the housing and that allows insertion and withdrawal of the first check valve.Type: ApplicationFiled: November 14, 2018Publication date: December 10, 2020Inventors: Masahiko TAKANO, Shigeyuki YORIKANE
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Publication number: 20200386229Abstract: A screw compressor includes a screw rotor, a casing, and a fluid supply portion to supply fluid in a membrane form into a compression chamber in the casing. The screw rotor has a male and female rotors. A male bore covering the male rotor and a female bore covering the female rotor are formed on the inner surface of the casing. An intersection line, on a higher pressure side, of the male and female bores is defined as a compression cusp. In a bore development view, a trajectory made by the first intersection of an extension line of a female lobe ridge and a male lobe ridge being moved, along with the rotation of the male and female rotors, is defined as a trajectory line. An opening of the fluid supply section to the compression chamber is positioned between the compression cusp and the trajectory line.Type: ApplicationFiled: August 6, 2018Publication date: December 10, 2020Inventors: Kotaro CHIBA, Masahiko TAKANO, Shigeyuki YORIKANE, Kenji MORITA, Yoshitaka TAKEUCHI, Minako KANADA
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Publication number: 20200102950Abstract: A liquid-feed-type gas compressor that can monitor the liquid surface height in a gas-liquid separator is provided.Type: ApplicationFiled: March 27, 2018Publication date: April 2, 2020Inventors: Kenji MORITA, Masahiko TAKANO, Shigeyuki YORIKANE
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Patent number: 10578107Abstract: Typical liquid-cooled compressors use the effective means of reducing no-load power by repeatedly starting and stopping an electric motor according to the amount of required air, but sufficient consideration has not been given to the fact that frequent starting and stopping of large-output electric motors leads to a decline in motor reliability. In order to solve this problem, a liquid-cooled compressor for circulating a liquid inside a compressor body using a pressure difference, and equipped with a cooling channel for circulating said liquid for cooling, configured so as to have an intake valve for adjusting the air intake of the compressor body, to change the amount of air taken in through the intake valve, and as a result, to perform a low-pressure operation during no-load operation at two levels of reduced operating pressure consisting of a value no less than a minimum circulation oil supply pressure and a low value.Type: GrantFiled: June 25, 2015Date of Patent: March 3, 2020Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Shigeyuki Yorikane, Hiroshi Ohta
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Publication number: 20170130720Abstract: Typical liquid-cooled compressors use the effective means of reducing no-load power by repeatedly starting and stopping an electric motor according to the amount of required air, but sufficient consideration has not been given to the fact that frequent starting and stopping of large-output electric motors leads to a decline in motor reliability. In order to solve this problem, a liquid-cooled compressor for circulating a liquid inside a compressor body using a pressure difference, and equipped with a cooling channel for circulating said liquid for cooling, configured so as to have an intake valve for adjusting the air intake of the compressor body, to change the amount of air taken in through the intake valve, and as a result, to perform a low-pressure operation during no-load operation at two levels of reduced operating pressure consisting of a value no less than a minimum circulation oil supply pressure and a low value.Type: ApplicationFiled: June 25, 2015Publication date: May 11, 2017Inventors: Shigeyuki YORIKANE, Hiroshi OHTA
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Patent number: D753728Type: GrantFiled: March 2, 2015Date of Patent: April 12, 2016Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Hiroshi Ohta, Shigeyuki Yorikane, Ryusuke Oshiro, Hiroyuki Matsuda, Akira Iyozumi, Hideharu Tanaka, Kazumasa Kanai, Toshiyuki Toyonaga