Patents by Inventor Kazutoshi Kuwayama
Kazutoshi Kuwayama 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).
-
Patent number: 11335922Abstract: An energy conversion system includes an energy converter, a cold generator, and a liquid water obtainer. The energy converter is configured to convert energy of a source from one form to another form and generate heat and water vapor. The cold generator is configured to generate cold using the heat generated by the energy converter. The liquid water obtainer is configured to condense the water vapor using the cold to obtain liquid water. Accordingly, the water vapor generated from the energy converter can be cooled efficiently. Therefore, efficiency in obtaining the liquid water can be improved compared with a case where the water vapor is cooled by open air.Type: GrantFiled: December 17, 2019Date of Patent: May 17, 2022Assignees: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takuya Fuse, Kazutoshi Kuwayama, Hisao Nagashima, Kazutoshi Nishinakamura, Manabu Orihashi, Masakatsu Tsubouchi
-
Patent number: 10703172Abstract: A vehicular heat management system has a first valve body, a second valve body, a third valve body, and a fourth valve body. The first valve body switches a state that the heating medium discharged from the first pump flows in and a state that the heating medium discharged from the first pump does not flow in, with respect to the more than or equal to three of heating medium passing device. The second valve body switches a state that the heating medium discharged from the second pump flows in and a state that the heating medium discharged from the second pump does not flow in, with respect to the more than or equal to three of heating medium passing device. The third valve body switches a state that the heating medium flows to the first pump and a state that the heating medium does not flow to the first pump, with respect to the more than or equal to three of heating medium passing device.Type: GrantFiled: July 16, 2014Date of Patent: July 7, 2020Assignee: DENSO CORPORATIONInventors: Masamichi Makihara, Norihiko Enomoto, Yoshiki Katoh, Kazutoshi Kuwayama, Nobuharu Kakehashi
-
Publication number: 20200127305Abstract: An energy conversion system includes an energy converter, a cold generator, and a liquid water obtainer. The energy converter is configured to convert energy of a source from one form to another form and generate heat and water vapor. The cold generator is configured to generate cold using the heat generated by the energy converter. The liquid water obtainer is configured to condense the water vapor using the cold to obtain liquid water. Accordingly, the water vapor generated from the energy converter can be cooled efficiently. Therefore, efficiency in obtaining the liquid water can be improved compared with a case where the water vapor is cooled by open air.Type: ApplicationFiled: December 17, 2019Publication date: April 23, 2020Inventors: Takuya FUSE, Kazutoshi KUWAYAMA, Hisao NAGASHIMA, Kazutoshi NISHINAKAMURA, Manabu ORIHASHI, Masakatsu TSUBOUCHI
-
Patent number: 10457117Abstract: An air conditioner for a vehicle including a pump that takes in and discharges a heat medium, a heat medium/air heat exchanger which regulates a temperature of ventilation air by conducting sensible-heat exchange between the ventilation air and the heat medium circulated by the pump, a heat transfer device having a passage through which the heat medium flows and conducts heat transfer with the heat medium, a compressor, a heat medium/refrigerant heat exchanger which regulates the temperature of the heat medium, and a controller which regulates a heat transfer amount with the heat medium in the heat transfer device or heat exchange capability of the heat medium/air heat exchanger such that a temperature of the ventilation air regulated by the heat medium/air heat exchanger approaches a target temperature.Type: GrantFiled: November 28, 2014Date of Patent: October 29, 2019Assignee: DENSO CORPORATIONInventors: Norihiko Enomoto, Nobuharu Kakehashi, Yoshiki Katoh, Kazutoshi Kuwayama, Masamichi Makihara
-
Patent number: 10449830Abstract: A vehicular heat management system includes: a refrigerant circuit; a first heat medium circuit in which a heat medium circulates and exchanges heat with a low-pressure side refrigerant of the refrigerant circuit; a second heat medium circuit in which a heat medium circulates and exchanges heat with a high-pressure side refrigerant of the refrigerant circuit; and a switching device configured to switch a mode between a communicating mode in which the first heat medium circuit and the second heat medium circuit are coupled and a non-communicating mode in which the first heat medium circuit and the second heat medium circuit are not coupled on the basis of a temperature of the heat medium in the first heat medium circuit.Type: GrantFiled: May 22, 2014Date of Patent: October 22, 2019Assignee: DENSO CORPORATIONInventors: Kengo Sugimura, Kazutoshi Kuwayama, Masamichi Makihara, Yoshiki Katoh, Norihiko Enomoto
-
Patent number: 10391834Abstract: An air conditioner includes: a heat-medium air heat exchanger that exchanges sensible heat between a heat medium having a temperature adjusted by the heat-medium temperature adjuster and ventilation air blowing to a space to be air-conditioned; a heat transfer portion having a flow path through which the heat medium circulates to transfer heat with the heat medium having the temperature adjusted by the heat-medium temperature adjuster; a large-inner-diameter pipe that forms a heat-medium flow path between the heat-medium temperature adjuster and the heat transfer portion; and a small-inner-diameter pipe that forms a heat-medium flow path between the heat-medium temperature adjuster and the heat-medium air heat exchanger. The small-inner-diameter pipe has small inner diameters ?H and ?C, compared to the large-inner-diameter pipe.Type: GrantFiled: January 19, 2015Date of Patent: August 27, 2019Assignee: DENSO CORPORATIONInventors: Norihiko Enomoto, Nobuharu Kakehashi, Kazutoshi Kuwayama, Masamichi Makihara, Takashi Yamanaka, Yasumitsu Omi, Koji Miura
-
Patent number: 10371420Abstract: An air conditioning device for a vehicle having a compressor that supplies a high-pressure refrigerant, an air heating heat exchanger heating air that is to be blown into a vehicle cabin, a pressure reduction part expanding and decompressing the high-pressure refrigerant so as to supply an intermediate-pressure refrigerant and a low-pressure refrigerant, a first low-pressure side heat exchanger exchanging heat between the intermediate-pressure refrigerant and a heating medium other than the air, a second low-pressure side heat exchanger cooling the heating medium by exchanging heat between the low-pressure refrigerant and the heating medium, a first heating medium circuit through which the heating medium cooled in the second low-pressure side heat exchanger circulates, and a heating medium-air heat exchanger.Type: GrantFiled: July 15, 2014Date of Patent: August 6, 2019Assignee: DENSO CORPORATIONInventors: Yoshiki Katoh, Masamichi Makihara, Kazutoshi Kuwayama, Norihiko Enomoto, Kengo Sugimura
-
Patent number: 10266035Abstract: A vehicle air-conditioner has a casing, a first heat exchanger, and a second heat exchanger. The casing forms an air passage through which air flows toward inside of a vehicle cabin. The first heat exchanger is housed in the casing and performs a sensible heat exchange between the air flowing in the air passage and a heating medium. The second heat exchanger is housed in the casing and performs a sensible heat exchange between the heating medium and air that has exchanged sensible heat in the first heat exchanger. The first heat exchanger and the second heat exchanger respectively have a plurality of tubes through which the heating medium flows. A longitudinal direction of the plurality of tubes of the first heat exchanger and a longitudinal direction of the plurality of tubes of the second heat exchanger are the same direction as each other.Type: GrantFiled: June 19, 2014Date of Patent: April 23, 2019Assignee: DENSO CORPORATIONInventors: Yoshiki Katoh, Kazutoshi Kuwayama, Masamichi Makihara, Norihiko Enomoto, Kengo Sugimura
-
Patent number: 10220681Abstract: A refrigeration cycle device for a vehicle has a compressor, a first pump, a high-pressure side heat exchanger, a heating medium-outside air heat exchanger, and a controller. The compressor draws and discharges a refrigerant. The first pump draws and discharges a first heating medium. The high-pressure side heat exchanger heats the first heating medium by exchanging heat between a high-pressure refrigerant discharged from the compressor and the first heating medium. The heating medium-outside air heat exchanger exchanges heat between the first heating medium and outside air. The controller controls operation of the compressor and the first pump. The controller activates the first pump when an activation request of the compressor is made. The controller activates the compressor, after activating the first pump, when it is determined or estimated that a temperature of the first heating medium is lower than or equal to a first predetermined value.Type: GrantFiled: July 22, 2014Date of Patent: March 5, 2019Assignee: DENSO CORPORATIONInventors: Yoshiki Katoh, Masamichi Makihara, Norihiko Enomoto, Kazutoshi Kuwayama, Kengo Sugimura
-
Patent number: 9878594Abstract: A thermal management system for a vehicle includes a first pump and a second pump, temperature adjustment target devices, heat exchangers, numerous flow paths including a first pump arrangement flow path, a second pump arrangement flow path, and device arrangement flow paths, a first switching portion for allowing the numerous flow paths to selectively communicate with each other, a second switching portion for allowing the numerous flow paths to selectively communicate with each other, and a reserve tank for storing therein heat medium. The reserve tank is configured to set the pressure of the liquid surface of the stored heat medium to a predetermined pressure (e.g., atmospheric pressure), and is connected to one flow path of the numerous flow paths.Type: GrantFiled: August 23, 2013Date of Patent: January 30, 2018Assignee: DENSO CORPORATIONInventors: Norihiko Enomoto, Nobuharu Kakehashi, Michio Nishikawa, Masamichi Makihara, Kazutoshi Kuwayama, Yoshiki Katoh, Kengo Sugimura
-
Patent number: 9718328Abstract: A control apparatus is applied to a system including an engine and a compressor for air-conditioning, and adjusts an operating point of the engine when the engine is operated. The control apparatus determines whether or not to allow increase in engine output to drive a compressor based on an air-conditioning request, based on the operating point of the engine before driving of the compressor in relation to a predetermined high-efficiency region including a maximum efficiency point in an efficiency characteristics of the engine, when the compressor is driven in response to the air-conditioning request. The control apparatus controls the engine output such that the operating point of the engine is in the high-efficiency region, if the increase in engine output is determined to be allowed.Type: GrantFiled: October 23, 2015Date of Patent: August 1, 2017Assignee: DENSO CORPORATIONInventors: Kazunari Izumi, Kazutoshi Kuwayama, Takuya Gotou
-
Publication number: 20170028813Abstract: An air conditioner for a vehicle includes: a pump configured to take in and discharge a heat medium; a first heat medium/air heat exchanger disposed to regulate a temperature of ventilation air blown into a vehicle interior by conducting sensible-heat exchange between the ventilation air and the heat medium circulated by the pump; a first heat transfer device having a passage through which the heat medium flows and disposed to conduct heat transfer with the heat medium circulated by the pump; a heat medium temperature regulator disposed to regulate the temperature of the heat medium circulated by the pump; and a heat exchanger regulator disposed to regulate a heat transfer amount with the heat medium in the first heat transfer device or heat exchange capability of the first heat medium/air heat exchanger such that a temperature associated with a temperature of the ventilation air regulated by the first heat medium/air heat exchanger approaches a first target temperature.Type: ApplicationFiled: November 28, 2014Publication date: February 2, 2017Inventors: Norihiko ENOMOTO, Nobuharu KAKEHASHI, Yoshiki KATOH, Kazutoshi KUWAYAMA, Masamichi MAKIHARA
-
Publication number: 20160339761Abstract: An air conditioner includes: a heat-medium air heat exchanger that exchanges sensible heat between a heat medium having a temperature adjusted by the heat-medium temperature adjuster and ventilation air blowing to a space to be air-conditioned; a heat transfer portion having a flow path through which the heat medium circulates to transfer heat with the heat medium having the temperature adjusted by the heat-medium temperature adjuster; a large-inner-diameter pipe that forms a heat-medium flow path between the heat-medium temperature adjuster and the heat transfer portion; and a small-inner-diameter pipe that forms a heat-medium flow path between the heat-medium temperature adjuster and the heat-medium air heat exchanger. The small-inner-diameter pipe has small inner diameters ?H and ?C, compared to the large-inner-diameter pipe.Type: ApplicationFiled: January 19, 2015Publication date: November 24, 2016Inventors: Norihiko ENOMOTO, Nobuharu KAKEHASHI, Kazutoshi KUWAYAMA, Masamichi MAKIHARA, Takashi YAMANAKA, Yasumitsu OMI, Koji MIURA
-
Publication number: 20160288618Abstract: A vehicle air-conditioner has a casing, a first heat exchanger, and a second heat exchanger. The casing forms an air passage through which air flows toward inside of a vehicle cabin. The first heat exchanger is housed in the casing and performs a sensible heat exchange between the air flowing in the air passage and a heating medium. The second heat exchanger is housed in the casing and performs a sensible heat exchange between the heating medium and air that has exchanged sensible heat in the first heat exchanger. The first heat exchanger and the second heat exchanger respectively have a plurality of tubes through which the heating medium flows. A longitudinal direction of the plurality of tubes of the first heat exchanger and a longitudinal direction of the plurality of tubes of the second heat exchanger are the same direction as each other.Type: ApplicationFiled: June 19, 2014Publication date: October 6, 2016Inventors: Yoshiki Katoh, Kazutoshi Kuwayama, Masamichi Makihara, Norihiko Enomoto, Kengo Sugimura
-
Publication number: 20160178253Abstract: An air conditioning device for a vehicle has a compressor that supplies a high-pressure refrigerant by drawing and discharging a refrigerant, an air heating heat exchanger heating air that is to be blown into a vehicle cabin by using heat of the high-pressure refrigerant, a pressure reduction part expanding and decompressing the high-pressure refrigerant and supplying as an intermediate-pressure refrigerant and a low-pressure refrigerant, a first low-pressure side heat exchanger exchanging heat between the intermediate-pressure refrigerant and a heating medium other than the air, a second low-pressure side heat exchanger cooling the heating medium by exchanging heat between the low-pressure refrigerant and the heating medium, a first heating medium circuit through which the heating medium cooled in the second low-pressure side heat exchanger circulates, and a heating medium-air heat exchanger causing the heating medium to absorb heat by exchanging heat between the air and the heating medium circulating througType: ApplicationFiled: July 15, 2014Publication date: June 23, 2016Inventors: Yoshiki KATOH, Masamichi MAKIHARA, Kazutoshi KUWAYAMA, Norihiko ENOMOTO, Kengo SUGIMURA
-
Publication number: 20160167481Abstract: A vehicular heat management system has a first valve body, a second valve body, a third valve body, and a fourth valve body. The first valve body switches a state that the heating medium discharged from the first pump flows in and a state that the heating medium discharged from the first pump does not flow in, with respect to the more than or equal to three of heating medium passing device. The second valve body switches a state that the heating medium discharged from the second pump flows in and a state that the heating medium discharged from the second pump does not flow in, with respect to the more than or equal to three of heating medium passing device. The third valve body switches a state that the heating medium flows to the first pump and a state that the heating medium does not flow to the first pump, with respect to the more than or equal to three of heating medium passing device.Type: ApplicationFiled: July 16, 2014Publication date: June 16, 2016Applicant: Denso CorporationInventors: Masamichi MAKIHARA, Norihiko ENOMOTO, Yoshiki KATOH, Kazutoshi KUWAYAMA, Nobuharu KAKEHASHI
-
Publication number: 20160159204Abstract: A refrigeration cycle device for a vehicle has a compressor, a first pump, a high-pressure side heat exchanger, a heating medium-outside air heat exchanger, and a controller. The compressor draws and discharges a refrigerant. The first pump draws and discharges a first heating medium. The high-pressure side heat exchanger heats the first heating medium by exchanging heat between a high-pressure refrigerant discharged from the compressor and the first heating medium. The heating medium-outside air heat exchanger exchanges heat between the first heating medium and outside air. The controller controls operation of the compressor and the first pump. The controller activates the first pump when an activation request of the compressor is made. The controller activates the compressor, after activating the first pump, when it is determined or estimated that a temperature of the first heating medium is lower than or equal to a first predetermined value.Type: ApplicationFiled: July 22, 2014Publication date: June 9, 2016Inventors: Yoshiki KATOH, Masamichi MAKIHARA, Norihiko ENOMOTO, Kazutoshi KUWAYAMA, Kengo SUGIMURA
-
Publication number: 20160114652Abstract: A control apparatus is applied to a system including an engine and a compressor for air-conditioning, and adjusts an operating point of the engine when the engine is operated. The control apparatus determines whether or not to allow increase in engine output to drive a compressor based on an air-conditioning request, based on the operating point of the engine before driving of the compressor in relation to a predetermined high-efficiency region including a maximum efficiency point in an efficiency characteristics of the engine, when the compressor is driven in response to the air-conditioning request. The control apparatus controls the engine output such that the operating point of the engine is in the high-efficiency region, if the increase in engine output is determined to be allowed.Type: ApplicationFiled: October 23, 2015Publication date: April 28, 2016Inventors: Kazunari IZUMI, Kazutoshi KUWAYAMA, Takuya GOTOU
-
Publication number: 20160101666Abstract: A vehicular heat management system includes: a refrigerant circuit; a first heat medium circuit in which a heat medium circulates and exchanges heat with a low-pressure side refrigerant of the refrigerant circuit; a second heat medium circuit in which a heat medium circulates and exchanges heat with a high-pressure side refrigerant of the refrigerant circuit; and a switching device configured to switch a mode between a communicating mode in which the first heat medium circuit and the second heat medium circuit are coupled and a non-communicating mode in which the first heat medium circuit and the second heat medium circuit are not coupled on the basis of a temperature of the heat medium in the first heat medium circuit.Type: ApplicationFiled: May 22, 2014Publication date: April 14, 2016Inventors: Kengo SUGIMURA, Kazutoshi KUWAYAMA, Masamichi MAKIHARA, Yoshiki KATOH, Norihiko ENOMOTO
-
Patent number: 9187321Abstract: A reactor includes a reaction part and a removal part. The reaction part is configured to generate at least two products as a result of a reaction of an unreacted material. The removal part is configured to selectively occlude at least one product from the at least two products so as to separate and remove the at least one product. The removal part includes an absorbent and a cooling unit. The absorbent releases heat at time of the selective occlusion of the at least one product. The cooling unit is configured to remove the heat released by the absorbent.Type: GrantFiled: October 23, 2012Date of Patent: November 17, 2015Assignee: DENSO CORPORATIONInventors: Takuya Fuse, Kazutoshi Kuwayama, Tadahiro Nakagawa