Patents by Inventor Shouhei Yasuda
Shouhei Yasuda 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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Patent number: 11614264Abstract: An icemaking system includes: a refrigerant circuit that executes a vapor compression refrigeration cycle; a circulation circuit that circulates solution as a cooling target of the refrigerant circuit; and a control device that controls refrigerant evaporation temperature at the refrigerant circuit. The circulation circuit includes a solution flow path of: an ice generator; a solution tank that stores the solution; and a pump that pressure feeds the solution to the solution flow path. The refrigerant circuit includes: an evaporator of the ice generator; a compressor; a condenser; and an expansion valve. The control device includes a central processing unit (CPU) that adjusts to lower evaporation temperature at the evaporator as the solution has higher solute concentration.Type: GrantFiled: January 11, 2019Date of Patent: March 28, 2023Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Azuma Kondou, Takeo Ueno, Shouhei Yasuda, Takahito Nakayama, Satoru Sakae
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Patent number: 11326817Abstract: An ice making system includes: a refrigerant circuit that performs a vapor compression refrigeration cycle and that includes a compressor, a condenser that condenses refrigerant discharged from the compressor, a first expansion valve with an adjustable opening degree that decompresses the refrigerant from the condenser, a flooded evaporator that evaporates the refrigerant decompressed by the first expansion valve, and a superheater that imparts a degree of superheating to the refrigerant discharged from the flooded evaporator; a circulation circuit that circulates a medium that is cooled by the flooded evaporator; and a control device that controls the adjustable opening degree of the first expansion valve such that the superheater imparts to the refrigerant discharged from the flooded evaporator a degree of superheating at which dryness of the refrigerant is kept within a predetermined range of less than 1.Type: GrantFiled: December 14, 2018Date of Patent: May 10, 2022Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Kouichi Kita, Azuma Kondou, Shouhei Yasuda, Keisuke Nakatsuka, Kazuyoshi Nomura, Takeo Ueno
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Patent number: 11300343Abstract: An icemaking system includes a circulation circuit configured to circulate icemaking solution, at least one icemaker provided in the circulation circuit, a cooling mechanism, a first detector and an adjuster. The icemaker includes a cooling chamber and a scraping mechanism. The cooling chamber has an inflow port and an exhaust port of solution, and the cooling chamber allows the solution to flow in the cooling chamber. The scraping mechanism scrapes ice generated on an inner surface of the cooling chamber. The cooling mechanism cools the solution in the cooling chamber. The first detector detects whether the inflow port of the cooling chamber has an ice nucleus. The adjuster adjusts a cooling temperature of the solution in accordance with a detection result of the first detector.Type: GrantFiled: September 26, 2019Date of Patent: April 12, 2022Assignee: Daikin Industries, Ltd.Inventors: Kouichi Kita, Azuma Kondou, Shunsuke Touya, Yuuya Seta, Shouhei Yasuda, Takeo Ueno
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Publication number: 20220042733Abstract: An icemaking system includes a circulation circuit configured to circulate icemaking solution, at least one icemaker provided in the circulation circuit, a cooling mechanism, a first detector and an adjuster. The icemaker includes a cooling chamber and a scraping mechanism. The cooling chamber has an inflow port and an exhaust port of solution, and the cooling chamber allows the solution to flow in the cooling chamber. The scraping mechanism scrapes ice generated on an inner surface of the cooling chamber. The cooling mechanism cools the solution in the cooling chamber. The first detector detects whether the inflow port of the cooling chamber has an ice nucleus. The adjuster adjusts a cooling temperature of the solution in accordance with a detection result of the first detector.Type: ApplicationFiled: September 26, 2019Publication date: February 10, 2022Inventors: Kouichi KITA, Azuma KONDOU, Shunsuke TOUYA, Yuuya SETA, Shouhei YASUDA, Takeo UENO
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Patent number: 11118825Abstract: an ice making system includes a tank that stores a medium to be cooled, an ice making machine that cools the medium and makes ice, a pump that circulates the medium between the tank and the ice making machine, a de-icing mechanism that heats the medium and melts the ice in the ice making machine, and a control device that controls operations of the ice making machine, the pump, and the de-icing mechanism. The ice making machine includes a cooling chamber that cools the medium, an inflow port through which the medium flows into the cooling chamber, and a discharge port through which the medium is discharged from the cooling chamber. The control device activates the de-icing mechanism when a pressure difference between a pressure of the medium at the inflow port and a pressure of the medium at the discharge port exceeds a predetermined value.Type: GrantFiled: December 12, 2018Date of Patent: September 14, 2021Assignee: Daikin Industries, Ltd.Inventors: Azuma Kondou, Shouhei Yasuda, Takahito Nakayama, Kazuyoshi Nomura, Takeo Ueno
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Publication number: 20200386463Abstract: An ice making system includes a tank that stores a medium to be cooled, an ice making machine that cools the medium and makes ice, a pump that circulates the medium between the tank and the ice making machine, a de-icing mechanism that heats the medium and melts the ice in the ice making machine, and a control device that controls operations of the ice making machine, the pump, and the de-icing mechanism. The ice making machine includes a cooling chamber that cools the medium, an inflow port through which the medium flows into the cooling chamber, and a discharge port through which the medium is discharged from the cooling chamber. The control device activates the de-icing mechanism when a pressure difference between a pressure of the medium at the inflow port and a pressure of the medium at the discharge port exceeds a predetermined value.Type: ApplicationFiled: December 12, 2018Publication date: December 10, 2020Inventors: Azuma KONDOU, Shouhei YASUDA, Takahito NAKAYAMA, Kazuyoshi NOMURA, Takeo UENO
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Publication number: 20200386462Abstract: An icemaking system includes: a refrigerant circuit that executes a vapor compression refrigeration cycle; a circulation circuit that circulates solution as a cooling target of the refrigerant circuit; and a control device that controls refrigerant evaporation temperature at the refrigerant circuit. The circulation circuit includes a solution flow path of: an ice generator; a solution tank that stores the solution; and a pump that pressure feeds the solution to the solution flow path. The refrigerant circuit includes: an evaporator of the ice generator; a compressor; a condenser; and an expansion valve. The control device includes a central processing unit (CPU) that adjusts to lower evaporation temperature at the evaporator as the solution has higher solute concentration.Type: ApplicationFiled: January 11, 2019Publication date: December 10, 2020Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Azuma Kondou, Takeo Ueno, Shouhei Yasuda, Takahito Nakayama, Satoru Sakae
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Publication number: 20200348058Abstract: An ice making system includes: a refrigerant circuit that performs a vapor compression refrigeration cycle and that includes a compressor, a condenser that condenses refrigerant discharged from the compressor, a first expansion valve with an adjustable opening degree that decompresses the refrigerant from the condenser, a flooded evaporator that evaporates the refrigerant decompressed by the first expansion valve, and a superheater that imparts a degree of superheating to the refrigerant discharged from the flooded evaporator; a circulation circuit that circulates a medium that is cooled by the flooded evaporator; and a control device that controls the adjustable opening degree of the first expansion valve such that the superheater imparts to the refrigerant discharged from the flooded evaporator a degree of superheating at which dryness of the refrigerant is kept within a predetermined range of less than 1.Type: ApplicationFiled: December 14, 2018Publication date: November 5, 2020Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Kouichi Kita, Azuma Kondou, Shouhei Yasuda, Keisuke Nakatsuka, Kazuyoshi Nomura, Takeo Ueno
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Patent number: 5596096Abstract: New compounds are disclosed having the general formulas (1) and (2): ##STR1## Also described is a process for preparing the compounds of formulas (1) and (2). Further described is a process for preparing a cephalosporin derivative having formula (5): ##STR2## by converting the compound of formula (1) to the compound of formula (2) and then converting the compound of formula (2) to the compound of formula (5).Type: GrantFiled: July 29, 1994Date of Patent: January 21, 1997Assignee: Meiji Seika Kaisha, Ltd.Inventors: Osamu Sakanaka, Shouhei Yasuda, Shinjiro Sumi, Katsufumi Sebata, Katsuharu Iinuma, Ken Nishihata
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Patent number: 5405955Abstract: New compounds are disclosed having the general formulas (1) and (2): ##STR1## Also described is a process for preparing the compounds of formulas (1) and (2). Further described is a process for preparing a cephalosporin derivative having formula (5): ##STR2## by converting the compound of formula (1) to the compound of formula (2) and then converting the compound of formula (2) to the compound of formula (5).Type: GrantFiled: June 14, 1993Date of Patent: April 11, 1995Assignee: Meiji Seika Kaisha, Ltd.Inventors: Osamu Sakanaka, Shouhei Yasuda, Shinjiro Sumi, Katsufumi Sebata, Katsuharu Iinuma, Ken Nishihata