Patents by Inventor Shun Kurata
Shun Kurata 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: 10843530Abstract: A vehicle air conditioning device includes a compressor and a controller. The controller is configured to set an upper limit value of the rotation speed of the compressor based on a combination of whether the speed of the vehicle is lower than a predetermined speed and whether a rotation speed of a fan device for a condenser is lower than a predetermined rotation speed.Type: GrantFiled: January 8, 2019Date of Patent: November 24, 2020Assignee: DENSO CORPORATIONInventors: Shun Kurata, Yoshiharu Endo, Takahiro Suzuki, Takeshi Miyamoto
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Patent number: 10787057Abstract: A vehicle air conditioner includes a bypass passage configured to cause a coolant to circulate while bypassing a heater core, a switching device set to switch between a first mode in which the coolant flows through the bypass passage and returns to an internal combustion engine while bypassing the heater core and a second mode in which the coolant flows to the heater core, a coolant-temperature sensor that detects a temperature of the coolant at a part through which the coolant flows in both the first mode and the second mode, and a control unit that controls an operation of a blower based on the coolant-temperature control data. Furthermore, first and second calculating portions are configured to calculate the coolant-temperature control data in the first and second modes, respectively.Type: GrantFiled: August 26, 2016Date of Patent: September 29, 2020Assignee: DENSO CORPORATIONInventors: Asuka Marumo, Shun Kurata
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Publication number: 20190152298Abstract: A vehicle air conditioning device includes a compressor and a controller. The controller is configured to set an upper limit value of the rotation speed of the compressor based on a combination of whether the speed of the vehicle is lower than a predetermined speed and whether a rotation speed of a fan device for a condenser is lower than a predetermined rotation speed.Type: ApplicationFiled: January 8, 2019Publication date: May 23, 2019Inventors: Shun KURATA, Yoshiharu ENDO, Takahiro SUZUKI, Takeshi MIYAMOTO
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Patent number: 10179500Abstract: An ejector-type refrigeration cycle includes an ejector module integrated with a gas-liquid separation device. A length of an inlet pipe that connects a liquid-phase refrigerant outflow port of an ejector module to a refrigerant inflow port of an evaporator is shorter than a length of a suction pipe that connects a gas-phase refrigerant outflow port of the ejector module to a suction port of the compressor.Type: GrantFiled: August 7, 2015Date of Patent: January 15, 2019Assignee: DENSO CORPORATIONInventors: Hiroshi Kataoka, Shun Kurata, Isamu Takasugi, Haruyuki Nishijima, Youhei Nagano, Yoshiyuki Yokoyama
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Publication number: 20180201093Abstract: A vehicle air conditioner includes a bypass passage configured to cause a coolant to circulate while bypassing a heater core, a switching device set to switch between a first mode in which the coolant flows through the bypass passage and returns to an internal combustion engine while bypassing the heater core and a second mode in which the coolant flows to the heater core, a coolant-temperature sensor that detects a temperature of the coolant at a part through which the coolant flows in both the first mode and the second mode, and a control unit that controls an operation of a blower based on the coolant-temperature control data. Furthermore, first and second calculating portions are configured to calculate the coolant-temperature control data in the first and second modes, respectively.Type: ApplicationFiled: August 26, 2016Publication date: July 19, 2018Inventors: Asuka MARUMO, Shun KURATA
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Publication number: 20170232821Abstract: An ejector-type refrigeration cycle includes an ejector module integrated with a gas-liquid separation device. A length of an inlet pipe that connects a liquid-phase refrigerant outflow port of an ejector module to a refrigerant inflow port of an evaporator is shorter than a length of a suction pipe that connects a gas-phase refrigerant outflow port of the ejector module to a suction port of the compressor.Type: ApplicationFiled: August 7, 2015Publication date: August 17, 2017Applicant: DENSO CORPORATIONInventors: Hiroshi KATAOKA, Shun KURATA, Isamu TAKASUGI, Haruyuki NISHIJIMA, Youhei NAGANO, Yoshiyuki YOKOYAMA
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Publication number: 20170225543Abstract: An ejector-type refrigeration cycle includes an ejector module integrated with a gas-liquid separation device. A length of a suction pipe that connects a gas-phase refrigerant outflow port of the ejector module to a suction port of a compressor is set to be shorter than a length of an outlet pipe that connects a refrigerant outflow port of an evaporator to a refrigerant suction port of the ejector module. A pressure loss that occurs when a refrigerant flows in the suction pipe may be set to be lower than a pressure loss that occurs when the refrigerant flows in an outlet pipe.Type: ApplicationFiled: August 7, 2015Publication date: August 10, 2017Inventors: Shun KURATA, Yoshiyuki YOKOYAMA, Youhei NAGANO, Haruyuki NISHIJIMA, Isamu TAKASUGI, Hiroshi KATAOKA
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Patent number: 9669499Abstract: A double-wall pipe includes an outer pipe, and an inner pipe disposed inside the outer pipe. An outer wall of the inner pipe has thereon a ridge portion, which defines a groove portion extending in a longitudinal direction of the inner pipe. The outer pipe and the inner pipe are bent to have a straight portion extending straightly, and a bend portion bent from the straight portion. In the straight portion, the outer pipe has an inside diameter that is larger than an outside diameter of an imaginary cylinder defined by an outer surface of the ridge portion of the inner pipe. Furthermore, the ridge portion of the inner pipe contacts an inside surface of the outer pipe to be radially squeezed and held by the outer pipe, in the bend portion. The double-wall pipe can be suitably used for a refrigerant cycle device.Type: GrantFiled: November 30, 2010Date of Patent: June 6, 2017Assignees: DENSO CORPORATION, DENSO AIRS CORPORATIONInventors: Fumiaki Nakamura, Yoshiaki Takano, Shun Kurata, Takahisa Suzuki, Takashi Ono, Hiroki Naganawa, Kinji Ochiai, Hiroki Ohara
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Publication number: 20140109373Abstract: A double-wall pipe includes an outer pipe, and an inner pipe disposed inside the outer pipe. An outer wall of the inner pipe has thereon a ridge portion, which defines a groove portion extending in a longitudinal direction of the inner pipe. The outer pipe and the inner pipe are bent to have a straight portion extending straightly, and a bend portion bent from the straight portion. In the straight portion, the outer pipe has an inside diameter that is larger than an outside diameter of an imaginary cylinder defined by an outer surface of the ridge portion of the inner pipe. Furthermore, the ridge portion of the inner pipe contacts an inside surface of the outer pipe to be radially squeezed and held by the outer pipe, in the bend portion. The double-wall pipe can be suitably used for a refrigerant cycle device.Type: ApplicationFiled: December 23, 2013Publication date: April 24, 2014Applicants: DENSO AIR SYSTEMS CORPORATION, DENSO CORPORATIONInventors: Fumiaki NAKAMURA, Yoshiaki TAKANO, Shun KURATA, Takahisa SUZUKI, Takashi ONO, Hiroki NAGANAWA, Kinji OCHIAI, Hiroki OHARA
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Publication number: 20110073208Abstract: A double-wall pipe includes an outer pipe, and an inner pipe disposed inside the outer pipe. An outer wall of the inner pipe has thereon a ridge portion, which defines a groove portion extending in a longitudinal direction of the inner pipe. The outer pipe and the inner pipe are bent to have a straight portion extending straightly, and a bend portion bent from the straight portion. In the straight portion, the outer pipe has an inside diameter that is larger than an outside diameter of an imaginary cylinder defined by an outer surface of the ridge portion of the inner pipe. Furthermore, the ridge portion of the inner pipe contacts an inside surface of the outer pipe to be radially squeezed and held by the outer pipe, in the bend portion. The double-wall pipe can be suitably used for a refrigerant cycle device.Type: ApplicationFiled: November 30, 2010Publication date: March 31, 2011Applicants: DENSO CORPORATION, DENSO AIRS CORPORATIONInventors: Fumiaki Nakamura, Yoshiaki Takano, Shun Kurata, Takahisa Suzuki, Takashi Ono, Hiroki Naganawa, Kinji Ochiai, Hiroki Ohara
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Patent number: 7891204Abstract: In a refrigeration cycle device with a capacity-variable compressor, a preset suction pressure that serves as a target value of a refrigerant suction pressure of the compressor is calculated and a refrigerant discharge capacity of the compressor is controlled by operating a capacity varying portion such that the suction pressure of the compressor is appreciated to the preset suction pressure. A thermal load detection portion is configured to detect a thermal load of a refrigeration cycle, and a refrigerant flow amount detection portion is configured to detect a flow amount of refrigerant circulating through the refrigeration cycle. In the refrigeration cycle device, a pressure at a predetermined part of the compressor is estimated based on the thermal load detected by the thermal load detection portion and on the flow amount detected by the refrigerant flow amount detection portion.Type: GrantFiled: June 26, 2008Date of Patent: February 22, 2011Assignee: Denso CorporationInventors: Shun Kurata, Takeshi Wakisaka, Katsuhiko Honda
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Patent number: 7886420Abstract: A method of manufacturing a double pipe includes a step of inserting a straight inner pipe into a straight outer pipe such that the inner pipe and the outer pipe are positioned at a predetermined relative position, a step of fixing a first end portion of the outer pipe to the inner pipe so as to form a first fixing portion, a step of bending the outer pipe and the inner pipe at the same time at a predetermined portion so as to form at least one bending portion after the fixing step of the first end portion, and a step of fixing a second end portion of the outer pipe to the inner pipe so as to form a second end portion after the bending.Type: GrantFiled: December 28, 2006Date of Patent: February 15, 2011Assignees: Denso Corporation, DENSO Airs CorporationInventors: Hiroki Naganawa, Shun Kurata, Fumiaki Nakamura, Kinji Ochiai, Hiroki Ohara, Hiroki Oguchi
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Patent number: 7887099Abstract: A compound tube is disclosed that includes an outer tube and an inner tube disposed in the outer tube. A passage is defined between the outer tube and the inner tube. Various methods of joining the outer tube to the inner tube are disclosed.Type: GrantFiled: December 5, 2006Date of Patent: February 15, 2011Assignees: DENSO Corporation, DENSO Airs CorporationInventors: Shun Kurata, Hiroki Naganawa, Fumiaki Nakamura, Kinji Ochiai, Hiroki Ohara
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Publication number: 20110005255Abstract: A vehicular air-conditioning system provided with a vapor compression type refrigerating machine improved in practicality, provided with a vapor compression type refrigeration cycle 10 having a compressor 11 compressing and discharging a refrigerant and an outside heat exchanger 16 exchanging heat with the air outside of the cabin and the refrigerant and designed to be able to switch between a cooler cycle cooling vented air blown into the cabin and a heat pump cycle heating the vented air, a heating means 36 for using cooling water of an internal combustion engine EG as a heat source for heating the vented air, a vent mode switch 60c setting a defogging mode blowing out vented air toward the vehicle window glass by operation by a passenger, and a control means 50 controlling switching between the cooler cycle and heat pump cycle, the control means 50 selecting the cooler cycle and outputting a signal requesting operation to the internal combustion engine EG when the vent mode switch 60c is used to set the deType: ApplicationFiled: June 23, 2010Publication date: January 13, 2011Applicant: DENSO CORPORATIONInventors: Takuya Tanihata, Hirotaka Egami, Shun Kurata, Yoshinori Ichishi
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Patent number: 7866378Abstract: A double-wall pipe includes an outer pipe, and an inner pipe disposed inside the outer pipe. An outer wall of the inner pipe has thereon a ridge portion, which defines a groove portion extending in a longitudinal direction of the inner pipe. The outer pipe and the inner pipe are bent to have a straight portion extending straightly, and a bend portion bent from the straight portion. In the straight portion, the outer pipe has an inside diameter that is larger than an outside diameter of an imaginary cylinder defined by an outer surface of the ridge portion of the inner pipe. Furthermore, the ridge portion of the inner pipe contacts an inside surface of the outer pipe to be readially squeezed and held by the outer pipe, in the bend portion. The double-wall pipe can be suitably used for a refrigerant cycle device.Type: GrantFiled: November 8, 2005Date of Patent: January 11, 2011Assignees: Denso Corporation, Denso Airs CorporationInventors: Fumiaki Nakamura, Yoshiaki Takano, Shun Kurata, Takahisa Suzuki, Takashi Ono, Hiroki Naganawa, Kinji Ochiai, Hiroki Ohara
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Patent number: 7753413Abstract: A refrigerant pipe connected to a suction side of a compressor and a refrigerant pipe connected to a discharge side of the compressor are integrated into one body. A refrigerant pipe connected to an inlet side of a condenser and a refrigerant pipe connected to an outlet side of the condenser are integrated into one body. A refrigerant pipe connected to an inlet side of a decompressor and a refrigerant pipe connected to an outlet side of the temperature detecting portion are integrated into one body. In these piping structures, a double pipe structure and a double pipe joint structure are adopted in which an inner pipe for circulating high pressure fluid and an outer pipe for circulating low pressure fluid are formed separate from each other and the respective end portions of the pipes are joined to a joint member by plastically deforming the pipes.Type: GrantFiled: January 26, 2004Date of Patent: July 13, 2010Assignee: Denso CorporationInventors: Makoto Yoshino, Fumiaki Nakamura, Satoru Yamanashi, Shun Kurata, Takahisa Suzuki
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Publication number: 20100024469Abstract: A refrigerating cycle apparatus includes a circulation refrigerant, a compressor, a condenser, an expansion valve, an evaporator, and an internal heat exchanger. The internal heat exchanger is disposed to perform heat exchange between a high pressure circulation refrigerant flowing from the condenser to the expansion valve and a low pressure circulation refrigerant flowing from the evaporator and the compressor. The circulation refrigerant has a property indicating an isentropic line having a gradient greater than a gradient of an isentropic line of a R134a refrigerant and a saturation characteristic curve having a two-phase region enthalpy width smaller than a two-phase region enthalpy width of the R134a refrigerant, on a p-h chart.Type: ApplicationFiled: July 29, 2009Publication date: February 4, 2010Applicant: DENSO CORPORATIONInventors: Shun Kurata, Takashi Yamanaka, Shin Nishida, Yuuichi Shirota, Yasutaka Kuroda
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Publication number: 20090000319Abstract: In a refrigeration cycle device with a capacity-variable compressor, a preset suction pressure that serves as a target value of a refrigerant suction pressure of the compressor is calculated and a refrigerant discharge capacity of the compressor is controlled by operating a capacity varying portion such that the suction pressure of the compressor is appreciated to the preset suction pressure. A thermal load detection portion is configured to detect a thermal load of a refrigeration cycle, and a refrigerant flow amount detection portion is configured to detect a flow amount of refrigerant circulating through the refrigeration cycle. In the refrigeration cycle device, a pressure at a predetermined part of the compressor is estimated based on the thermal load detected by the thermal load detection portion and on the flow amount detected by the refrigerant flow amount detection portion.Type: ApplicationFiled: June 26, 2008Publication date: January 1, 2009Applicant: DENSO CORPORATIONInventors: Shun Kurata, Takeshi Wakisaka, Katsuhiko Honda
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Patent number: 7425021Abstract: A pipe is received through a through hole of a connector. A bulged portion of the pipe is press fitted into a recess of the connector located at a first side of the connector and a retaining member is located at a second side of the connector.Type: GrantFiled: August 4, 2004Date of Patent: September 16, 2008Assignee: DENSO CorporationInventors: Satoru Yamanashi, Shun Kurata
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Publication number: 20080030023Abstract: A compound tube is disclosed that includes an outer tube and an inner tube disposed in the outer tube. A passage is defined between the outer tube and the inner tube. Various methods of joining the outer tube to the inner tube are disclosed.Type: ApplicationFiled: December 5, 2006Publication date: February 7, 2008Applicants: DENSO Corporation, DENSO Airs CorporationInventors: Shun Kurata, Hiroki Naganawa, Fumiaki Nakamura, Kinji Ochiai, Hiroki Ohara