Patents by Inventor Yusuke Arii
Yusuke Arii 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: 11959677Abstract: A refrigeration apparatus includes: a refrigerant circuit through which refrigerant circulates; a controller to execute a plurality of refrigerant shortage sensing functions of sensing a shortage of an amount of the refrigerant; and an input device through which an operation mode to be set is input into the controller. The operation mode includes: a first mode in which energy-saving performance is emphasized; and a second mode in which the refrigeration apparatus is permitted to operate in a range in which reliability is ensured. In accordance with the operation mode set through the input device, the controller determines which one of sensing results obtained by the refrigerant shortage sensing functions is enabled and which one of sensing results obtained by the refrigerant shortage sensing functions is disabled. When a sensing result determined to be enabled shows a refrigerant shortage, the controller gives a notification about the refrigerant shortage.Type: GrantFiled: April 9, 2019Date of Patent: April 16, 2024Assignee: Mitsubishi Electric CorporationInventors: Takanori Yashiro, Hiroshi Sata, Yusuke Arii
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Publication number: 20220120484Abstract: A refrigeration apparatus includes: a refrigerant circuit through which refrigerant circulates; a controller to execute a plurality of refrigerant shortage sensing functions of sensing a shortage of an amount of the refrigerant; and an input device through which an operation mode to be set is input into the controller. The operation mode includes: a first mode in which energy-saving performance is emphasized; and a second mode in which the refrigeration apparatus is permitted to operate in a range in which reliability is ensured. In accordance with the operation mode set through the input device, the controller determines which one of sensing results obtained by the refrigerant shortage sensing functions is enabled and which one of sensing results obtained by the refrigerant shortage sensing functions is disabled. When a sensing result determined to be enabled shows a refrigerant shortage, the controller gives a notification about the refrigerant shortage.Type: ApplicationFiled: April 9, 2019Publication date: April 21, 2022Inventors: Takanori YASHIRO, Hiroshi SATA, Yusuke ARII
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Patent number: 10845108Abstract: A refrigeration device includes a refrigerant circuit sequentially connecting a compressor, a condenser, a reservoir, and a subcooling coil via refrigerant pipes in series, an injection circuit configured to inject part of refrigerant flowing from the condenser to an intermediate pressure part of the compressor, and an injection expansion valve configured to reduce a pressure of refrigerant branched on a downstream side of the subcooling coil. The refrigeration device includes a temperature measurement unit, a pressure measurement unit, and a controller configured to identify a type of refrigerant on the basis of a measured value of the temperature measurement unit and a measured value of the pressure measurement unit, and control at least one of an operating frequency of the compressor, a rotation frequency of a condenser fan, and an opening degree of the injection expansion valve.Type: GrantFiled: February 8, 2016Date of Patent: November 24, 2020Assignee: Mitsubishi Electric CorporationInventors: Ryo Tsukiyama, Yusuke Arii, Tomotaka Ishikawa
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Publication number: 20190113264Abstract: A refrigeration device includes a refrigerant circuit sequentially connecting a compressor, a condenser, a reservoir, and a subcooling coil via refrigerant pipes in series, an injection circuit configured to inject part of refrigerant flowing from the condenser to an intermediate pressure part of the compressor, and an injection expansion valve configured to reduce a pressure of refrigerant branched on a downstream side of the subcooling coil. The refrigeration device includes a temperature measurement unit, a pressure measurement unit, and a controller configured to identify a type of refrigerant on the basis of a measured value of the temperature measurement unit and a measured value of the pressure measurement unit, and control at least one of an operating frequency of the compressor, a rotation frequency of a condenser fan, and an opening degree of the injection expansion valve.Type: ApplicationFiled: February 8, 2016Publication date: April 18, 2019Inventors: Ryo TSUKIYAMA, Yusuke ARII, Tomotaka ISHIKAWA
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Patent number: 10254016Abstract: A refrigeration cycle apparatus includes: a low-stage refrigeration cycle including a low-stage compressor, a low-stage condenser, a low-stage pressure reducing device, and a low-stage evaporator, and circulating low-stage refrigerant; a high-stage refrigeration cycle including a high-stage compressor, a high-stage condenser, a high-stage pressure reducing device, and a high-stage evaporator, and circulating high-stage refrigerant; a cascade condenser exchanging heat between the low-stage refrigerant in the low-stage condenser and the high-stage refrigerant in the high-stage evaporator, and a controller. The low-stage refrigerant is a refrigerant that undergoes disproportionation. The low-stage refrigerant is maintained at a pressure lower than a disproportionation pressure at which the low-stage refrigerant undergoes disproportionation.Type: GrantFiled: March 17, 2014Date of Patent: April 9, 2019Assignees: Mitsubishi Electric Corporation, AGC INC.Inventors: Hiroshi Sata, Tomotaka Ishikawa, Takashi Ikeda, Yusuke Arii
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Publication number: 20170108247Abstract: A refrigeration cycle apparatus includes: a low-stage refrigeration cycle including a low-stage compressor, a low-stage condenser, a low-stage pressure reducing device, and a low-stage evaporator, and circulating low-stage refrigerant; a high-stage refrigeration cycle including a high-stage compressor, a high-stage condenser, a high-stage pressure reducing device, and a high-stage evaporator, and circulating high-stage refrigerant; a cascade condenser exchanging heat between the low-stage refrigerant in the low-stage condenser and the high-stage refrigerant in the high-stage evaporator, and a controller. The low-stage refrigerant is a refrigerant that undergoes disproportionation. The low-stage refrigerant is maintained at a pressure lower than a disproportionation pressure at which the low-stage refrigerant undergoes disproportionation.Type: ApplicationFiled: March 17, 2014Publication date: April 20, 2017Inventors: Hiroshi SATA, Tomotaka ISHIKAWA, Takashi IKEDA, Yusuke ARII
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Patent number: 9551517Abstract: A refrigeration cycle apparatus includes a controller configured to control opening and closing of a solenoid valve and that of a solenoid valve depending on any of a time when a compressor is activated, a time when the compressor is in normal operation, a time when a temperature of a motor of the compressor rises in the normal operation, and a time when the compressor stopped due to low-pressure cutoff is activated.Type: GrantFiled: April 4, 2012Date of Patent: January 24, 2017Assignee: MITSUBISHI ELECTRIC CORPORATIONInventor: Yusuke Arii
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Publication number: 20140053587Abstract: A refrigeration cycle apparatus includes a controller configured to control opening and closing of a solenoid valve and that of a solenoid valve depending on any of a time when a compressor is activated, a time when the compressor is in normal operation, a time when a temperature of a motor of the compressor rises in the normal operation, and a time when the compressor stopped due to low-pressure cutoff is activated.Type: ApplicationFiled: April 4, 2012Publication date: February 27, 2014Applicant: MITSUBISHI ELECTRIC CORPORATIONInventor: Yusuke Arii
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Patent number: 7748788Abstract: In a child seat which has a seat portion and a back portion and in which the back portion provided with a shoulder belt guide for guiding a shoulder belt of a seat belt of a vehicle from the shoulder to the chest of a sitter, the child seat is provided with a belt guide position adjusting mechanism for changing the position of the shoulder belt guide in the left and right directions of the back portion.Type: GrantFiled: February 11, 2009Date of Patent: July 6, 2010Assignee: Combi CorporationInventors: Ryoichi Yumoto, Yusuke Arii
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Publication number: 20090152918Abstract: In a child seat which has a seat portion and a back portion and in which the back portion provided with a shoulder belt guide for guiding a shoulder belt of a seat belt of a vehicle from the shoulder to the chest of a sitter, the child seat is provided with a belt guide position adjusting mechanism for changing the position of the shoulder belt guide in the left and right directions of the back portion.Type: ApplicationFiled: February 11, 2009Publication date: June 18, 2009Applicant: COMBI CORPORATIONInventors: Ryoichi YUMOTO, Yusuke Arii
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Publication number: 20060273637Abstract: In a child seat which has a seat portion and a back portion and in which the back portion provided with a shoulder belt guide for guiding a shoulder belt of a seat belt of a vehicle from the shoulder to the chest of a sitter, the child seat is provided with a belt guide position adjusting mechanism for changing the position of the shoulder belt guide in the left and right directions of the back portion.Type: ApplicationFiled: June 5, 2006Publication date: December 7, 2006Applicant: COMBI CORPORATIONInventors: Ryoichi Yumoto, Yusuke Arii
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Patent number: 6746080Abstract: A child car seat includes a cradle to be fastened to a seat of a vehicle, having a base part and a standing part, a sliding base longitudinally slidably mounted on the cradle. A seat body having a backrest part, is supported for turning on the sliding base. The sliding base tilts gradually as the same slides on the cradle.Type: GrantFiled: April 2, 2002Date of Patent: June 8, 2004Assignee: Combi CorporationInventors: Miho Tsugimatsu, Yukio Sakamoto, Yusuke Arii, Takeshi Furui
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Publication number: 20020145319Abstract: A child car seat includes a cradle to be fastened to a seat of a vehicle, having a base part and a standing part, a sliding base longitudinally slidably mounted on the cradle. A seat body having a backrest part, is supported for turning on the sliding base. The sliding base tilts gradually as the same slides on the cradle.Type: ApplicationFiled: April 2, 2002Publication date: October 10, 2002Inventors: Miho Tsugimatsu, Yukio Sakamoto, Yusuke Arii, Takeshi Furui