Patents by Inventor Masamichi Makihara

Masamichi Makihara 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: 10065478
    Abstract: A thermal management system for a vehicle includes a high-temperature side pump that draws and discharges a heat medium, a compressor that draws and discharges a refrigerant in a refrigeration cycle, a high-pressure side heat exchanger that exchanges heat between a high-pressure side refrigerant in the refrigeration cycle and the heat medium circulated by the high-temperature side pump, a heat medium-outside air heat exchanger that exchanges heat between the heat medium circulated by the high-temperature side pump and outside air, and a pump control unit that controls an operation of the high-temperature side pump such that the operation of the high-temperature side pump is continued even after the compressor is stopped. Thus, the cycle efficiency exhibited when restarting the compressor can be improved.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: September 4, 2018
    Assignee: DENSO CORPORATION
    Inventors: Masamichi Makihara, Takashi Yamanaka, Yasumitsu Omi, Koji Miura, Norihiko Enomoto, Nobuharu Kakehashi
  • Patent number: 9994087
    Abstract: A vehicular heat management system has a compressor, a heat-medium heating heat exchanger, and a flow adjustment part. The compressor draws and discharges a refrigerant. The heat-medium heating heat exchanger causes a heat exchange between the refrigerant discharged from the compressor and a heat medium other than air and heats the heat medium. The flow adjustment part causes a flow of a cooling fluid cooling the refrigerant when the compressor is stopped. The vehicular heat management system further has a refrigeration cycle unit and a refrigerant-flow-path forming member. The refrigeration cycle unit includes devices configuring a refrigeration cycle. The refrigerant-flow-path forming member (i) is disposed in a low-temperature area having an air temperature that is lower than an air temperature in an area in which the refrigeration cycle unit is disposed, and (ii) passes a refrigerant in the refrigeration cycle flows.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: June 12, 2018
    Assignee: DENSO CORPORATION
    Inventors: Norihiko Enomoto, Nobuharu Kakehashi, Yoshiki Katoh, Hiroshi Kishita, Masamichi Makihara
  • Patent number: 9878594
    Abstract: 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: Grant
    Filed: August 23, 2013
    Date of Patent: January 30, 2018
    Assignee: DENSO CORPORATION
    Inventors: Norihiko Enomoto, Nobuharu Kakehashi, Michio Nishikawa, Masamichi Makihara, Kazutoshi Kuwayama, Yoshiki Katoh, Kengo Sugimura
  • Publication number: 20170028813
    Abstract: 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: Application
    Filed: November 28, 2014
    Publication date: February 2, 2017
    Inventors: Norihiko ENOMOTO, Nobuharu KAKEHASHI, Yoshiki KATOH, Kazutoshi KUWAYAMA, Masamichi MAKIHARA
  • Publication number: 20170008373
    Abstract: A thermal management system for a vehicle includes a high-temperature side pump that draws and discharges a heat medium, a compressor that draws and discharges a refrigerant in a refrigeration cycle, a high-pressure side heat exchanger that exchanges heat between a high-pressure side refrigerant in the refrigeration cycle and the heat medium circulated by the high-temperature side pump, a heat medium-outside air heat exchanger that exchanges heat between the heat medium circulated by the high-temperature side pump and outside air, and a pump control unit that controls an operation of the high-temperature side pump such that the operation of the high-temperature side pump is continued even after the compressor is stopped. Thus, the cycle efficiency exhibited when restarting the compressor can be improved.
    Type: Application
    Filed: February 23, 2015
    Publication date: January 12, 2017
    Inventors: Masamichi MAKIHARA, Takashi YAMANAKA, Yasumitsu OMI, Koji MIURA, Norihiko ENOMOTO, Nobuharu KAKEHASHI
  • Publication number: 20160339761
    Abstract: 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: Application
    Filed: January 19, 2015
    Publication date: November 24, 2016
    Inventors: Norihiko ENOMOTO, Nobuharu KAKEHASHI, Kazutoshi KUWAYAMA, Masamichi MAKIHARA, Takashi YAMANAKA, Yasumitsu OMI, Koji MIURA
  • Publication number: 20160339767
    Abstract: An air conditioner for a vehicle includes a pump that draws and discharges a heat medium, a cooler core that exchanges sensible heat between the heat medium and ventilation air into a vehicle interior to cool and dehumidify the ventilation air, a heat-medium and outside-air heat exchanger that exchanges sensible heat between the heat medium and outside air, a compressor adapted to draw and discharge a refrigerant in a refrigeration cycle, a heat-medium cooling heat exchanger that cools the heat medium by exchanging heat between a low-pressure side refrigerant in the refrigeration cycle and the heat medium, and first and second switching valves that switch between a first dehumidification mode for circulation of the heat medium between the cooler core and the heat-medium cooling heat exchanger and a second dehumidification mode for circulation of the heat medium between the cooler core and the heat-medium and outside-air heat exchanger.
    Type: Application
    Filed: January 26, 2015
    Publication date: November 24, 2016
    Inventors: Norihiko ENOMOTO, Nobuharu KAKEHASHI, Yasumitsu OMI, Masamichi MAKIHARA, Hiroshi KISHITA
  • Publication number: 20160288618
    Abstract: 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: Application
    Filed: June 19, 2014
    Publication date: October 6, 2016
    Inventors: Yoshiki Katoh, Kazutoshi Kuwayama, Masamichi Makihara, Norihiko Enomoto, Kengo Sugimura
  • Publication number: 20160178253
    Abstract: 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 throug
    Type: Application
    Filed: July 15, 2014
    Publication date: June 23, 2016
    Inventors: Yoshiki KATOH, Masamichi MAKIHARA, Kazutoshi KUWAYAMA, Norihiko ENOMOTO, Kengo SUGIMURA
  • Publication number: 20160167481
    Abstract: 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: Application
    Filed: July 16, 2014
    Publication date: June 16, 2016
    Applicant: Denso Corporation
    Inventors: Masamichi MAKIHARA, Norihiko ENOMOTO, Yoshiki KATOH, Kazutoshi KUWAYAMA, Nobuharu KAKEHASHI
  • Publication number: 20160159204
    Abstract: 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: Application
    Filed: July 22, 2014
    Publication date: June 9, 2016
    Inventors: Yoshiki KATOH, Masamichi MAKIHARA, Norihiko ENOMOTO, Kazutoshi KUWAYAMA, Kengo SUGIMURA
  • Publication number: 20160129756
    Abstract: A vehicular heat management system has a compressor, a heat-medium heating heat exchanger, and a flow adjustment part. The compressor draws and discharges a refrigerant. The heat-medium heating heat exchanger causes a heat exchange between the refrigerant discharged from the compressor and a heat medium other than air and heats the heat medium. The flow adjustment part causes a flow of a cooling fluid cooling the refrigerant when the compressor is stopped. The vehicular heat management system further has a refrigeration cycle unit and a refrigerant-flow-path forming member. The refrigeration cycle unit includes devices configuring a refrigeration cycle. The refrigerant-flow-path forming member (i) is disposed in a low-temperature area having an air temperature that is lower than an air temperature in an area in which the refrigeration cycle unit is disposed, and (ii) passes a refrigerant in the refrigeration cycle flows.
    Type: Application
    Filed: June 3, 2014
    Publication date: May 12, 2016
    Inventors: Norihiko ENOMOTO, Nobuharu KAKEHASHI, Yoshiki KATOH, Hiroshi KISHITA, Masamichi MAKIHARA
  • Publication number: 20160109163
    Abstract: A vehicle air conditioning apparatus includes: a heat exchanger adjustment unit which adjusts the flow rate of at least one of a heat medium and outside air flowing through a heat medium-to-outside air heat exchanger in such a way that a temperature related to a surface temperature of an air-cooling heat exchanger approaches a first target temperature, and a refrigerant flow rate adjustment unit which adjusts the flow rate of a refrigerant discharged from the compressor in such a way that a temperature related to a temperature of blast air, which has been adjusted in at least one of the air-cooling heat exchanger and an air-heating heat exchanger and which is blown out into a vehicle interior, approaches a second target temperature. Accordingly, a surface temperature of the air-cooling heat exchanger and the temperature of the blast air into the vehicle interior can be properly controlled.
    Type: Application
    Filed: June 3, 2014
    Publication date: April 21, 2016
    Inventors: Norihiko ENOMOTO, Nobuharu KAKEHASHI, Michio NISHIKAWA, Yoshiki KATOH, Kengo SUGIMURA, Takashi YAMANAKA, Masamichi MAKIHARA
  • Publication number: 20160101666
    Abstract: 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: Application
    Filed: May 22, 2014
    Publication date: April 14, 2016
    Inventors: Kengo SUGIMURA, Kazutoshi KUWAYAMA, Masamichi MAKIHARA, Yoshiki KATOH, Norihiko ENOMOTO
  • Publication number: 20150258875
    Abstract: 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: Application
    Filed: August 23, 2013
    Publication date: September 17, 2015
    Inventors: Norihiko Enomoto, Nobuharu Kakehashi, Michio Nishikawa, Masamichi Makihara, Kazutoshi Kuwayama, Yoshiki Katoh, Kengo Sugimura
  • Patent number: 8053100
    Abstract: A battery unit includes a module assembly, a housing that houses the module assembly, and a blower. The module assembly includes a stack of battery modules, and defines a first surface and a second surface opposite to the first surface. The blower is disposed at an end of the module assembly. A rotation shaft of the blower is located between a first plane that includes the first surface and a second plane that includes the second surface. The blower is configured to supply air toward the first surface of the module assembly in a direction perpendicular to a stacking direction of the battery modules. The air is supplied over a range that is substantially equal to a dimension of the module assembly in the stacking direction.
    Type: Grant
    Filed: April 1, 2008
    Date of Patent: November 8, 2011
    Assignee: Denso Corporation
    Inventors: Yoshimitsu Inoue, Masamichi Makihara
  • Patent number: 7823671
    Abstract: A cooling structure includes a plurality of plate-shaped heat generating members such as battery parts, DC voltage converters and electrical member (e.g., relay). In the cooling structure, the heat generating members are arranged in a plate-thickness direction to have predetermined spaces for forming fluid passages each of which is provided between adjacent heat generating members, and the fluid passages are provided to pass a fluid for cooling the heat generating members. Accordingly, all the heat generating members can be effectively cooled while the cooling structure can be made compact.
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: November 2, 2010
    Assignee: Denso Corporation
    Inventors: Yoshimitsu Inoue, Masamichi Makihara, Takashi Yamanaka
  • Publication number: 20100100266
    Abstract: A thermal management system for a vehicle includes a switching power supply device, an electronic member configured to output an electrical power adjusted by the switching power supply device, and a control device configured to control operation of the switching power supply device. When the control device receives a heating request from at least one of devices that include a drive device used for driving the vehicle and an air conditioning device used for performing an air conditioning in a vehicle compartment, the control device causes the switching power supply device to be operated in a heat increasing operation in which heat generated from the electronic member is increased more than that in a general operation state, and supplies the generated heat to the at least one of the drive device and the air conditioning device.
    Type: Application
    Filed: October 16, 2009
    Publication date: April 22, 2010
    Applicant: DENSO CORPORATION
    Inventors: Takeshi Yoshinori, Yasumitsu Oomi, Hitoshi Ninomiya, Masamichi Makihara, Kouji Mori, Yoshimitsu Inoue
  • Publication number: 20080247135
    Abstract: A battery unit includes a module assembly, a housing that houses the module assembly, and a blower. The module assembly includes a stack of battery modules, and defines a first surface and a second surface opposite to the first surface. The blower is disposed at an end of the module assembly. A rotation shaft of the blower is located between a first plane that includes the first surface and a second plane that includes the second surface. The blower is configured to supply air toward the first surface of the module assembly in a direction perpendicular to a stacking direction of the battery modules. The air is supplied over a range that is substantially equal to a dimension of the module assembly in the stacking direction.
    Type: Application
    Filed: April 1, 2008
    Publication date: October 9, 2008
    Applicant: DENSO CORPORATION
    Inventors: Yoshimitsu Inoue, Masamichi Makihara
  • Patent number: 7250223
    Abstract: The present invention provides a heat exchanger which is assembled by brazing an aluminum fin material to the outer surface of an aluminum tube material formed by bending a sheet material, in particular, an aluminum heat exchanger which can be suitably used as an automotive heat exchanger such as a condenser or evaporator. The tube material is formed of a two-layer clad sheet which includes a core material and an Al—Zn alloy layer clad on the core material. The Al—Zn alloy layer is clad on the outer surface of the tube material and brazed to the aluminum fin material. The potential of the Al—Zn alloy layer in a normal corrosive solution is at least 100 mV lower than the potential of the core material in the normal corrosive solution. The potential of the Al—Zn alloy layer in the normal corrosive solution is lower than the potential of the core material in high-concentration corrosive water. The normal corrosive solution refers to an aqueous solution containing 10 g/l of NaCl and 0.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: July 31, 2007
    Assignees: DENSO Corporation, Sumitomo Light Metal Industries, Ltd.
    Inventors: Haruhiko Miyachi, Yoshiharu Hasegawa, Masamichi Makihara, Yasunaga Itoh, Naoki Yamashita, Toshihiko Fukuda