Patents by Inventor Aun Ota

Aun Ota 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).

  • Publication number: 20210179431
    Abstract: A carbon nanotube attached member has a substrate, which is mainly made of aluminum, and a aligned CNT film which is aligned along an alignment direction ORD. A carbon nanotube/CNT, which forms the aligned CNT film, has a length of 200 micrometers or longer. The CNT is synthesized starting from a mixed gas of acetylene, hydrogen, and argon. Furthermore, carbon dioxide is added to maintain catalyst activity. A ratio of acetylene:carbon dioxide is adjusted from 1:10 to 1:300. The aligned CNT film is partially formed. The formation range of the aligned CNT film is set by inhibiting synthesis and/or aligned growth of the CNT by a rough surface or a carbon-containing substance.
    Type: Application
    Filed: October 21, 2016
    Publication date: June 17, 2021
    Inventors: Aun OTA, Hisayoshi OSHIMA, Suguru NODA, Yu YOSHIHARA
  • Patent number: 11029073
    Abstract: A cold storage heat exchanger includes refrigerant tubes having therein refrigerant passages and arranged to provide a clearance therebetween. A cold storage container is bonded to a refrigerant tube and defines therein a compartment receiving a cold storage material. The cold storage container has protrusion portions protruding outward and being in contact with the refrigerant tube.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: June 8, 2021
    Assignee: DENSO CORPORATION
    Inventors: Atsushi Yamada, Seiji Inoue, Yoshio Miyata, Naoki Yokoyama, Etsuo Hasegawa, Jun Abei, Hiroshi Ishikawa, Aun Ota, Kouta Hagihara
  • Publication number: 20190351735
    Abstract: The seat air conditioner configured to supply conditioning air to a seat in a vehicle cabin includes a refrigeration cycle, an air blower, and a conditioning air supply unit. The refrigeration cycle includes a compressor that compresses and discharges a refrigerant, a heat emitting portion that emits heat of the refrigerant discharged from the compressor to generate a warm air, a decompressor that decompresses the refrigerant flowing out of the heat emitting portion, and a heat absorbing portion that evaporates the refrigerant decompressed by the decompressor to generate a cold air. The air blower blows air to exchange heat with the refrigerant. The conditioning air supply unit supplies each of the warm air generated by the heat emitting portion and the cold air generated by the heat absorbing portion as the conditioning air to the seat.
    Type: Application
    Filed: August 1, 2019
    Publication date: November 21, 2019
    Inventors: Shigeru KAWANO, Koji OTA, Aun OTA
  • Publication number: 20190331437
    Abstract: A heat conduction device includes a heat source portion, a temperature control surface, and heat transfer portions. The heat source portion is configured to generate at least hot heat or cold heat. The temperature control surface is sectioned into a plurality of temperature control sections, and at least some of the plurality of temperature control sections are disposed away from the heat source portion. The plurality of heat transfer portions connect the heat source portion and the plurality of the temperature control sections to transfer heat between the heat source portion and the plurality of temperature control sections. The plurality of temperature control sections are separated from each other based on a distance from the heat source portion.
    Type: Application
    Filed: June 12, 2019
    Publication date: October 31, 2019
    Inventors: Masanori JINNOH, Aun OTA, Hisayoshi OSHIMA, Hidehiko HIRAMATSU, Takashi KANEKO
  • Patent number: 10352599
    Abstract: An evaporator is provided with a refrigerant pipe, a cold storage case which has inner fins mounted therein, and air-side fins. The evaporator is characterized in that the cold storage case is provided with: a filling opening for filling the cold storage case with a cold storage material; a first flow passage connecting to the filling opening and extending in the same direction as the direction of inflow of the cold storage material; and a second flow passage connecting to the first flow passage and extending in the direction intersecting the first flow passage.
    Type: Grant
    Filed: April 1, 2013
    Date of Patent: July 16, 2019
    Assignee: DENSO CORPORATION
    Inventors: Aun Ota, Jun Abei, Eiichi Torigoe, Toshiya Nagasawa
  • Publication number: 20190056164
    Abstract: A cold storage heat exchanger includes refrigerant tubes having therein refrigerant passages and arranged to provide a clearance therebetween. A cold storage container is bonded to a refrigerant tube and defines therein a compartment receiving a cold storage material. The cold storage container has protrusion portions protruding outward and being in contact with the refrigerant tube.
    Type: Application
    Filed: October 22, 2018
    Publication date: February 21, 2019
    Inventors: Atsushi YAMADA, Seiji INOUE, Yoshio MIYATA, Naoki YOKOYAMA, Etsuo HASEGAWA, Jun ABEI, Hiroshi ISHIKAWA, Aun OTA, Kouta HAGIHARA
  • Patent number: 10168084
    Abstract: A refrigerant evaporator has an interchange part. The interchange part connects a first collecting part of a second downstream tank part, and a second distribution part of a second upstream tank part. The interchange part connects a second collecting part of a second downstream tank part, and a first distribution part of a second upstream tank part. The interchange part swaps a refrigerant about a width direction of a core. Refrigerant passages relevant to the interchange part are configured to improve refrigerant distribution. Providing a plurality of passages and/or twisting a passage improve distribution.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: January 1, 2019
    Assignee: DENSO CORPORATION
    Inventors: Aun Ota, Naohisa Ishizaka, Norimasa Baba, Shota Chatani, Masakazu Nagaya, Eiichi Torigoe, Kengo Kazari, Daisuke Haseba
  • Patent number: 10132549
    Abstract: A cold storage heat exchanger includes multiple refrigerant tubes arranged to provide a clearance therebetween, multiple cold storage containers each of which is interposed between adjacent refrigerant tubes, bonded to the adjacent refrigerant tubes and defining a compartment receiving a cold storage material. A surface of each cold storage container has multiple protrusion portions, and each protrusion portion protrudes outward and is in contact with the adjacent refrigerant tubes. The multiple protrusion portions are arranged in a zigzag manner or extend continuously in an air flow direction.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: November 20, 2018
    Assignee: DENSO CORPORATION
    Inventors: Atsushi Yamada, Seiji Inoue, Yoshio Miyata, Naoki Yokoyama, Etsuo Hasegawa, Jun Abei, Hiroshi Ishikawa, Aun Ota, Kouta Hagihara
  • Patent number: 9989315
    Abstract: A cold storage heat exchanger has refrigerant pipes fins, and cold-storage-medium containers. The cold-storage-medium container is arranged next to the refrigerant pipe. A cold storage medium is accommodated in the cold-storage-medium container in order to leave an air cell, and to provide a filling ratio of less than 90%. The cold-storage-medium container has a plurality of depressions at an inside of the cold-storage-medium container. The depression is a dimple. The plurality of depressions are joined each other at top parts and provide high rigidity. The cold-storage-medium container is positioned on the refrigerant pipe by an engaging projection. An open end of an open depression is covered by the refrigerant pipe. The cold storage medium can flow into the open depression. Therefore, the cold storage medium may directly contact the refrigerant pipe, and is directly cooled with the refrigerant.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: June 5, 2018
    Assignee: DENSO CORPORATION
    Inventors: Yuusuke Kitoh, Toshiya Nagasawa, Eiichi Torigoe, Aun Ota, Jun Abei, Daisuke Haseba
  • Publication number: 20170356690
    Abstract: A refrigerant heat exchanger has the passage defining member. The passage defining member is made of carbon fiber reinforced plastics. The passage defining member has a tube portion defining a refrigerant passage. The passage defining member has the plate portion which spreads from the tube portion. In the tube portion, carbon fibers are oriented to surround the tube portion. This orientation contributes to a pressure resisting performance in a radial direction of the tube portion. In the plate portion, the carbon fibers are oriented to protrude from the tube portion. This orientation contributes to improve mechanical strength in the plate portion. The carbon fibers are extended over both the tube portion and the plate portion. This orientation promotes thermal transfer over the tube portion and the plate portion.
    Type: Application
    Filed: February 5, 2016
    Publication date: December 14, 2017
    Inventors: Kouhei NAKAMURA, Aun OTA, Tomohide NISHINO, Yoshiyuki YAMAUCHI, Takahito SHIBATA
  • Publication number: 20170241715
    Abstract: A heat exchange device has a heat transfer member having thermal conductivity and a fin that is provided integrally with the heat transfer member. A heat transfer is performed between the heat transfer member and the fin. The fin is configured by more than one of a carbon nanotube aggregate that is configured by carbon nanotubes assembled together. The carbon nanotube aggregates are arranged on the heat transfer member and distanced from each other, and protrude from the heat transfer member in an axial direction of the carbon nanotubes.
    Type: Application
    Filed: November 4, 2015
    Publication date: August 24, 2017
    Inventors: Aun OTA, Shinichiro NAKAMURA, Hisayoshi OSHIMA
  • Patent number: 9719732
    Abstract: A cold storage heat exchanger has refrigerant pipes and a cold storage material. Each of the refrigerant pipes has a refrigerant passage therein. The refrigerant pipes are arranged so as to be distanced from each other with clearances therebetween. The cold storage material is disposed in at least one of the clearances. At least another one of the clearances provides an air passage. The heat storage material is disposed in at least two of the clearances arranged adjacent to each other.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: August 1, 2017
    Assignee: DENSO CORPORATION
    Inventors: Aun Ota, Daisuke Haseba, Jun Abei, Yuusuke Kitoh, Eiichi Torigoe, Toshiya Nagasawa
  • Publication number: 20160084548
    Abstract: A refrigerant evaporator has an interchange part. The interchange part connects a first collecting part of a second downstream tank part, and a second distribution part of a second upstream tank part. The interchange part connects a second collecting part of a second downstream tank part, and a first distribution part of a second upstream tank part. The interchange part swaps a refrigerant about a width direction of a core. Refrigerant passages relevant to the interchange part are configured to improve refrigerant distribution. Providing a plurality of passages and/or twisting a passage improve distribution.
    Type: Application
    Filed: May 9, 2014
    Publication date: March 24, 2016
    Inventors: Aun OTA, Naohisa ISHIZAKA, Norimasa BABA, Shota CHATANI, Masakazu NAGAYA, Eiichi TORIGOE, Kengo KAZARI, Daisuke HASEBA
  • Publication number: 20150211806
    Abstract: A cold storage heat exchanger has: refrigerant pipes each of which has a refrigerant passage therein, the refrigerant pipes arranged to be distanced from each other with clearances therebetween; and a cold storage material disposed in at least one of the clearances. At least an another one of the clearances provides an air passage. The heat storage material is disposed in at least two of the clearances arranged adjacent to each other. A refrigerant pipe pitch between two of the refrigerant pipes that are adjacent to each other and therebetween have the cold storage material is shorter than a refrigerant pipe pitch between two of the refrigerant pipes that are adjacent to each other and therebetween have the air passage. Thus, a time duration required for a cold storage can be shortened.
    Type: Application
    Filed: August 1, 2013
    Publication date: July 30, 2015
    Inventors: Aun Ota, Daisuke Haseba, Jun Abei, Yuusuke Kitoh, Eiichi Torigoe, Toshiya Nagasawa
  • Publication number: 20150198383
    Abstract: A cold storage heat exchanger has refrigerant pipes fins, and cold-storage-medium containers. The cold-storage-medium container is arranged next to the refrigerant pipe. A cold storage medium is accommodated in the cold-storage-medium container in order to leave an air cell, and to provide a filling ratio of less than 90%. The cold-storage-medium container has a plurality of depressions at an inside of the cold-storage-medium container. The depression is a dimple. The plurality of depressions are joined each other at top parts and provide high rigidity. The cold-storage-medium container is positioned on the refrigerant pipe by an engaging projection. An open end of an open depression is covered by the refrigerant pipe. The cold storage medium can flow into the open depression. Therefore, the cold storage medium may directly contact the refrigerant pipe, and is directly cooled with the refrigerant.
    Type: Application
    Filed: June 20, 2013
    Publication date: July 16, 2015
    Inventors: Yuusuke Kitoh, Toshiya Nagasawa, Eiichi Torigoe, Aun Ota, Jun Abei, Daisuke Haseba
  • Patent number: 9074820
    Abstract: A heat exchanger includes a plurality of flat tubes in which a fluid flows, and a plurality of fins each of which is connected to flat surfaces of adjacent tubes to increase a heat exchange area on a side of air flowing outside of the tube. The fin includes a plate portion having a plate surface, and fin protrusions protruding from the plate surface of the plate portion. The fin protrusions are provided to be spaced from the flat surface of the tube by a predetermined distance. A flow resistance portion is provided to protrude from the flat surface of the tube toward outside by a protrusion dimension that is equal to or larger than the predetermined distance.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: July 7, 2015
    Assignee: DENSO CORPORATION
    Inventors: Atsushi Hayasaka, Masahiro Shimoya, Mitsugu Nakamura, Takashi Taki, Masahiro Omae, Aun Ota
  • Publication number: 20150153090
    Abstract: A cold storage heat exchanger includes multiple refrigerant tubes arranged to provide a clearance therebetween, multiple cold storage containers each of which is interposed between adjacent refrigerant tubes, bonded to the adjacent refrigerant tubes and defining a compartment receiving a cold storage material. A surface of each cold storage container has multiple protrusion portions, and each protrusion portion protrudes outward and is in contact with the adjacent refrigerant tubes. The multiple protrusion portions are arranged in a zigzag manner or extend continuously in an air flow direction.
    Type: Application
    Filed: February 9, 2015
    Publication date: June 4, 2015
    Inventors: Atsushi YAMADA, Seiji INOUE, Yoshio MIYATA, Naoki YOKOYAMA, Etsuo HASEGAWA, Jun ABEI, Hiroshi ISHIKAWA, Aun OTA, Kouta HAGIHARA
  • Patent number: 9032757
    Abstract: A cold storage heat exchanger includes multiple refrigerant tubes, a cold storage container, an inner fin, a cooling air passage and an air-side fin. The inner fin is arranged inside of the cold storage container. The cooling air passage, in which air flows to cool a space, is provided to contact a surface of the refrigerant tube on a side opposite to the cold storage container. The air-side fin is arranged in the cooling air passage and thermally connected to the refrigerant tube. The cold storage container includes multiple recess portions bonded to the inner fin, and multiple protrusion portions located on an outer side of the recess portions. The protrusion portions of the cold storage container are bonded to an outer surface of the refrigerant tube.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: May 19, 2015
    Assignee: DENSO CORPORATION
    Inventors: Atsushi Yamada, Seiji Inoue, Yoshio Miyata, Naoki Yokoyama, Etsuo Hasegawa, Jun Abei, Hiroshi Ishikawa, Aun Ota, Kouta Hagihara
  • Patent number: 8978411
    Abstract: An outer surface of a cold-storage container (or a refrigerant tube) is provided with a plurality of protrusion portions or recess portions. A cooling air passage, in which air flows to cool a space to be cooled in a cold storage time and in a cold release time of the cold storage material, is provided to contact a surface of the refrigerant tube on a side opposite to the cold storage container bonded to the refrigerant tube. The refrigerant tubes and the cold storage container form therebetween a cold-storage side air passage by the protrusion portions or the recess portions, such that air flows in the cold-storage side air passage separated from the cooling air passage. For example, the cold-storage side air passage is provided with a slanting space that causes condensed water or ice generated in the cold storage time to be drained along the cold-storage side air passage.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: March 17, 2015
    Assignee: Denso Corporation
    Inventors: Atsushi Yamada, Seiji Inoue, Yoshio Miyata, Naoki Yokoyama, Etsuo Hasegawa, Jun Abei, Hiroshi Ishikawa, Aun Ota, Kouta Hagihara
  • Publication number: 20150068718
    Abstract: An evaporator is provided with a refrigerant pipe, a cold storage case which has inner fins mounted therein, and air-side fins. The evaporator is characterized in that the cold storage case is provided with: a filling opening for filling the cold storage case with a cold storage material; a first flow passage connecting to the filling opening and extending in the same direction as the direction of inflow of the cold storage material; and a second flow passage connecting to the first flow passage and extending in the direction intersecting the first flow passage.
    Type: Application
    Filed: April 1, 2013
    Publication date: March 12, 2015
    Inventors: Aun Ota, Jun Abei, Eiichi Torigoe, Toshiya Nagasawa