Patents by Inventor Yuki Ichise
Yuki Ichise 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: 11655819Abstract: A scroll compressor includes a base seat portion which is integrally formed with one end surface of a shaft and in which a press-fitting hole exposing a first hole portion is formed. The base seat portion is disposed in a second portion of a penetration portion with a gap interposed between a drive bush body and the base seat portion.Type: GrantFiled: June 25, 2019Date of Patent: May 23, 2023Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.Inventors: Yuki Ichise, Hiroshi Yamazaki, Goshi Iketaka, Shinya Hamamoto
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Patent number: 11454236Abstract: The present invention comprises: a blank forming step in which a casing blank (70) is formed by die-casting, the casing blank (70) having a first cylindrical section (41), a second cylindrical section (42), and an annular section (44) which includes a recess (71) recessed toward one side in an axial direction (O) from a first surface (44a) facing the other side in the axial direction (O); and a cutting step in which the inner peripheral surface (42a) of the second cylindrical section (42) and a second surface (44b) of the annular section (44), the second surface (44b) facing the one side in the axial direction (O), are cut to connect the recess (71) to a compression section containing space (42A) within the second cylindrical section (42), thereby forming a flow passage. In the blank forming step, the casing blank (70) is formed such that a part of a side surface (71a) of the recess (71) is disposed radially outside the inner peripheral surface (42a) of the second cylindrical section (42).Type: GrantFiled: July 5, 2018Date of Patent: September 27, 2022Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.Inventors: Ichiro Yogo, Takeshi Hirano, Yuki Ichise
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Patent number: 11143185Abstract: A scroll compressor includes a flow path that is disposed in a portion of a bearing holder, which corresponds to each formation position of a plurality of stator groove portions, and that penetrates the bearing holder in an axial direction, a first recess portion (72) disposed in a portion of a thrust bearing, which faces the flow path, and recessed from one side in the axial direction to the other side in the axial direction, and a first groove portion (74) disposed in an outer peripheral portion of the first recess portion (72), extending from a bottom surface (72a) of the recess portion (72) to a surface located on a side opposite to a surface having the first recess portion (72) formed thereon, and communicating with the first recess portion (72) in the axial direction.Type: GrantFiled: July 3, 2018Date of Patent: October 12, 2021Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.Inventors: Yuki Ichise, Ichiro Yogo, Akinori Yoshioka, Manabu Suzuki, Takeshi Hirano
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Publication number: 20210293240Abstract: A scroll compressor includes a base seat portion which is integrally formed with one end surface of a shaft and in which a press-fitting hole exposing a first hole portion is formed. The base seat portion is disposed in a second portion of a penetration portion with a gap interposed between a drive bush body and the base seat portion.Type: ApplicationFiled: June 25, 2019Publication date: September 23, 2021Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.Inventors: Yuki ICHISE, Hiroshi YAMAZAKI, Goshi IKETAKA, Shinya HAMAMOTO
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Publication number: 20200318638Abstract: The present invention comprises: a blank forming step in which a casing blank (70) is formed by die-casting, the casing blank (70) having a first cylindrical section (41), a second cylindrical section (42), and an annular section (44) which includes a recess (71) recessed toward one side in an axial direction (O) from a first surface (44a) facing the other side in the axial direction (O); and a cutting step in which the inner peripheral surface (42a) of the second cylindrical section (42) and a second surface (44b) of the annular section (44), the second surface (44b) facing the one side in the axial direction (O), are cut to connect the recess (71) to a compression section containing space (42A) within the second cylindrical section (42), thereby forming a flow passage. In the blank forming step, the casing blank (70) is formed such that a part of a side surface (71a) of the recess (71) is disposed radially outside the inner peripheral surface (42a) of the second cylindrical section (42).Type: ApplicationFiled: July 5, 2018Publication date: October 8, 2020Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.Inventors: Ichiro YOGO, Takeshi HIRANO, Yuki ICHISE
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Publication number: 20200173443Abstract: A scroll compressor includes a flow path that is disposed in a portion of a bearing holder, which corresponds to each formation position of a plurality of stator groove portions, and that penetrates the bearing holder in an axial direction, a first recess portion (72) disposed in a portion of a thrust bearing, which faces the flow path, and recessed from one side in the axial direction to the other side in the axial direction, and a first groove portion (74) disposed in an outer peripheral portion of the first recess portion (72), extending from a bottom surface (72a) of the recess portion (72) to a surface located on a side opposite to a surface having the first recess portion (72) formed thereon, and communicating with the first recess portion (72) in the axial direction.Type: ApplicationFiled: July 3, 2018Publication date: June 4, 2020Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.Inventors: Yuki ICHISE, Ichiro YOGO, Akinori YOSHIOKA, Manabu SUZUKI, Takeshi HIRANO
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Patent number: 10424996Abstract: Provided is a motor rotor which, without changing an integral fastening structure relying on swage pins, increases resistance to the excessive excitation force of the motor rotor and which can easily prevent decreases in fastening strength; a motor that uses the motor rotor, and an electric compressor are also provided. This motor rotor is provided with a cylindrical rotor core comprising multiple laminated magnetic steel sheets, end plates and balance weights laminated on both ends of the rotor core, and multiple headed swage pins which are inserted from one side and which integrally fasten the rotor core, the end plates and the balance weights. The material of the balance weight arranged to the head of the swage pin is harder than that of the swage pin, and the material of the balance weight arranged to the swage part of the swage pin is softer than that of the swage pin.Type: GrantFiled: October 27, 2015Date of Patent: September 24, 2019Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.Inventors: Masayuki Ishikawa, Goshi Iketaka, Yuki Ichise, Akinori Yoshioka
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Patent number: 9816499Abstract: An electric compressor includes a compression unit that compresses a refrigerant, an electric motor that is coupled with the compression unit via a main shaft and a housing that accommodates the compression unit and the electric motor. The electric compressor further includes an end-side bearing holding part that is provided near an axial end of the housing closer to the electric motor and a rolling bearing that has an outer ring press-fitted into the end-side bearing holding part and an inner ring into which an end of the rotating shaft is press-fitted, and that supports the main shaft, in which an opening into which an assembly jig for supporting the rolling bearing when the main shaft is press-fitted into the inner ring can be inserted and removed is provided in an end surface of the housing near the end-side bearing holding part.Type: GrantFiled: January 26, 2012Date of Patent: November 14, 2017Assignee: MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.Inventors: Masayuki Ishikawa, Takayuki Hagita, Yuki Ichise, Takeshi Hirano, Takayuki Watanabe
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Publication number: 20170279341Abstract: Provided is a motor rotor which, without changing an integral fastening structure relying on swage pins, increases resistance to the excessive excitation force of the motor rotor and which can easily prevent decreases in fastening strength; a motor that uses the motor rotor, and an electric compressor are also provided. This motor rotor is provided with a cylindrical rotor core comprising multiple laminated magnetic steel sheets, end plates and balance weights laminated on both ends of the rotor core, and multiple headed swage pins which are inserted from one side and which integrally fasten the rotor core, the end plates and the balance weights. The material of the balance weight arranged to the head of the swage pin is harder than that of the swage pin, and the material of the balance weight arranged to the swage part of the swage pin is softer than that of the swage pin.Type: ApplicationFiled: October 27, 2015Publication date: September 28, 2017Applicant: MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.Inventors: Masayuki ISHIKAWA, Goshi IKETAKA, Yuki ICHISE, Akinori YOSHIOKA
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Patent number: 9739279Abstract: This electric horizontal scroll compressor (1) comprises an oil reservoir (13) in which lubricating oil that is separated from refrigerant passing through a compressing mechanism (20) is temporarily stored, and an oil return flow channel (15, 24) by which lubricating oil stored in the oil reservoir (13) is returned further upstream than the compressing mechanism (20). A main bearing (35) is fit into a holding face (14a) of an inner housing (14) by way of a clearance fit, and lubricating oil stored in the oil reservoir (13) is supplied to the region of the fit via the oil return flow channel (15, 24).Type: GrantFiled: August 11, 2014Date of Patent: August 22, 2017Assignee: MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.Inventors: Yuki Ichise, Goshi Iketaka, Takayuki Suzuki
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Publication number: 20160160861Abstract: This electric horizontal scroll compressor (1) comprises an oil reservoir (13) in which lubricating oil that is separated from refrigerant passing through a compressing mechanism (20) is temporarily stored, and an oil return flow channel (15, 24) by which lubricating oil stored in the oil reservoir (13) is returned further upstream than the compressing mechanism (20). A main bearing (35) is fit into a holding face (14a) of an inner housing (14) by way of a clearance fit, and lubricating oil stored in the oil reservoir (13) is supplied to the region of the fit via the oil return flow channel (15, 24).Type: ApplicationFiled: August 11, 2014Publication date: June 9, 2016Applicant: MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.Inventors: Yuki ICHISE, Goshi IKETAKA, Takayuki SUZUKI
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Patent number: 9157425Abstract: Provided is an inverter-integrated electric compressor in which the layout of a wiring path connected to an IPM is optimized, the wiring path is simplified, and the noise interference due to disturbance is suppressed, thereby improving the controllability. In an inverter-integrated electric compressor in which an inverter box is provided on the outer periphery of a housing accommodating a compressor and a motor, the inverter box integrally accommodating an inverter device, the inverter device includes an IPM constituting an inverter circuit, and UVW output terminals arranged on one side of the IPM are disposed, in the inverter box, so as to face a glass-sealed terminal that applies power from the inverter device to the motor.Type: GrantFiled: September 22, 2010Date of Patent: October 13, 2015Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Takayuki Watanabe, Hiroyuki Kamitani, Takayuki Takashige, Masayuki Ishikawa, Takeshi Hirano, Yuki Ichise
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Patent number: 9109589Abstract: A main-bearing outer diameter of an electric motor is made smaller than a rotor outer diameter without causing a drop in production efficiency, and the ease of performing a shrink-fitting step is also enhanced by making it possible to mount a rotor to a main shaft in an early stage. A bearing journal portion (14b) of a main shaft (14) of an electric motor is formed in a shape into which an inner race (18b) of a main bearing (18) can be press-fitted from both sides in the axial direction thereof, and, in addition, an outer diameter of the bearing journal portion (14b) is made larger than an outer diameter of a rotor press-fitting portion (14a), whereas a bearing bore portion (5a) of a partition member (5) is formed in a shape into which an outer race (18a) can be press-fitted from both sides in the axial direction thereof.Type: GrantFiled: August 26, 2010Date of Patent: August 18, 2015Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yuki Ichise, Takayuki Hagita, Masayuki Ishikawa, Takeshi Hirano, Takayuki Watanabe
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Publication number: 20130294951Abstract: An electric compressor includes a compression unit that compresses a refrigerant; an electric motor that is coupled with the compression unit via a main shaft; a housing that accommodates the compression unit and the electric motor; an end-side bearing holding part that is provided near an axial end of the housing closer to the electric motor; and a rolling bearing that has an outer ring press-fitted into the end-side bearing holding part and an inner ring into which an end of the rotating shaft is press-fitted, and that supports the main shaft, in which an opening into which an assembly jig for supporting the rolling bearing when the main shaft is press-fitted into the inner ring can be inserted and removed is provided in an end surface of the housing near the end-side bearing holding part.Type: ApplicationFiled: January 26, 2012Publication date: November 7, 2013Applicant: MITSUBISHI HEAVY INDUSTRIES AUTOMOTIVE THERMAL SYSTEMS CO., LTD.Inventors: Masayuki Ishikawa, Takayuki Hagita, Yuki Ichise, Takeshi Hirano, Takayuki Watanabe
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Patent number: 8435019Abstract: An object is to provide a highly reliable vehicle-air-conditioner electric compressor of an inverter-integrated type that minimizes vibration and deformation of a board and a bus bar caused by vibration of a vehicle so as to prevent devices from becoming detached, to prevent soldered sections and welded sections from rupturing, and to prevent short circuits from occurring.Type: GrantFiled: October 31, 2008Date of Patent: May 7, 2013Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Yuki Ichise, Takayuki Watanabe, Takeshi Hirano, Akinori Yoshioka
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Patent number: 8408883Abstract: An inverter-integrated vehicle-air-conditioner electric compressor capable of eliminating malfunctions or the like due to electromagnetic noise interference and improving the reliability is provided. In a vehicle-air-conditioner electric compressor with which an inverter unit is integrated, lead-out positions of low-voltage cables and connectors for supplying a low voltage from a low-voltage power supply to a circuit on a low-voltage ground LV are provided either in a side surface opposite to a mounting position of high-voltage components and high-voltage cables for supplying a high voltage from a high-voltage power supply to a power system circuit on a high-voltage system ground HV; or at an end farthest away from the mounting position of the high-voltage cables and the high-voltage components in an adjacent side surface or the same side surface.Type: GrantFiled: September 25, 2008Date of Patent: April 2, 2013Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Yuki Ichise, Takayuki Watanabe, Takashi Nakagami, Koji Nakano
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Publication number: 20120282123Abstract: A main-bearing outer diameter of an electric motor is made smaller than a rotor outer diameter without causing a drop in production efficiency, and the ease of performing a shrink-fitting step is also enhanced by making it possible to mount a rotor to a main shaft in an early stage. A bearing journal portion (14b) of a main shaft (14) of an electric motor is formed in a shape into which an inner race (18b) of a main bearing (18) can be press-fitted from both sides in the axial direction thereof, and, in addition, an outer diameter of the bearing journal portion (14b) is made larger than an outer diameter of a rotor press-fitting portion (14a), whereas a bearing bore portion (5a) of a partition member (5) is formed in a shape into which an outer race (18a) can be press-fitted from both sides in the axial direction thereof.Type: ApplicationFiled: August 26, 2010Publication date: November 8, 2012Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yuki Ichise, Takayuki Hagita, Masayuki Ishikawa, Takeshi Hirano, Takayuki Watanabe
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Patent number: 8240163Abstract: There is provided a vehicle-air-conditioner electric compressor in which a high-voltage short circuit due to the breakage of a high-voltage system including an inverter is prevented in the event of a crash, thereby improving safety. In a vehicle-air-conditioner electric compressor (1) including an inverter accommodating section (10) at the periphery of a pressure-resistant housing (2) in which an electric motor and a compressing mechanism are accommodated, the inverter accommodating section (10) accommodating an inverter (13) that converts direct-current power supplied from a high-voltage power source to three-phase alternating-current power and feeds the power to the electric motor in the pressure-resistant housing (2) through glass-sealed terminals (16), wherein in a vehicle-mounted state, the inverter accommodating section (10) and the inverter (13) are offset to the rear of a vehicle with respect to the front-surface portion (2A), facing the front of the vehicle, of the pressure-resistant housing.Type: GrantFiled: September 26, 2008Date of Patent: August 14, 2012Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Takayuki Watanabe, Takeshi Hirano, Akinori Yoshioka, Yuki Ichise
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Patent number: 8152487Abstract: An inverter-integrated electric compressor that is capable of solving various problems caused by thermal expansion of a gel material filled inside an inverter accommodating section for vibration prevention and moisture prevention and capable of increasing reliability is provided. In the inverter-integrated electric compressor, an inverter accommodating section (11) is integrated with a periphery of a housing (2) accommodating an electric compressor; an inverter device (20) is accommodated inside the inverter accommodating section; a gel material (30) for vibration prevention and moisture prevention is filled in the upper section thereof so as to leave an air layer (31); an upper opening in the inverter accommodating section is sealed with a cover member (18); and a vent valve (40) formed of a moisture-permeable waterproof membrane (42) is provided in the cover member.Type: GrantFiled: September 18, 2008Date of Patent: April 10, 2012Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Takayuki Watanabe, Manabu Suzuki, Yuki Ichise, Yukihiro Sakaguchi, Takeshi Hirano, Akinori Yoshioka, Takayuki Hagita
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Publication number: 20120045353Abstract: Provided is an inverter-integrated electric compressor in which the layout of a wiring path connected to an IPM is optimized, the wiring path is simplified, and the noise interference due to disturbance is suppressed, thereby improving the controllability. In an inverter-integrated electric compressor in which an inverter box is provided on the outer periphery of a housing accommodating a compressor and a motor, the inverter box integrally accommodating an inverter device, the inverter device includes an IPM constituting an inverter circuit, and UVW output terminals arranged on one side of the IPM are disposed, in the inverter box, so as to face a glass-sealed terminal that applies power from the inverter device to the motor.Type: ApplicationFiled: September 22, 2010Publication date: February 23, 2012Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Takayuki Watanabe, Hiroyuki Kamitani, Takayuki Takashige, Masayuki Ishikawa, Takeshi Hirano, Yuki Ichise