Patents by Inventor Yoshika Hatasako

Yoshika Hatasako 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: 11930707
    Abstract: A thermoelectric power generation device including a thermoelectric element having a first side provided to a heating unit and a second side provided to a cooling unit, and a heat transfer pipe arranged in a passage in which a high temperature fluid flows. The heating unit and the heat transfer pipe have internal spaces communicating with each other. The internal space of the heating unit and the internal space of the heat transfer pipe form a circulation path in which a heat medium is circulated. An outlet of the heat transfer pipe from which the heat medium is discharged is provided in a position higher than an inlet of the heat transfer pipe into which the heat medium flows. The heat transfer pipe vaporizes the heat medium flowing in the circulation path by using heat of the high temperature fluid. The heating unit condenses the heat medium vaporized.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: March 12, 2024
    Assignee: YANMAR CO., LTD.
    Inventors: Yoshika Hatasako, Jiro Fukudome, Yuichiro Tanaka, Shuichi Nakagawa
  • Patent number: 11871665
    Abstract: A thermoelectric generation system is provided with: a thermoelectric element; a heating unit; a cooling unit; a heat transfer unit; a pressure gauge; a first valve; and a control unit. The thermoelectric element uses a temperature difference to generate power. The heating unit has a first heat medium path through which a heat medium passes, and heats the thermoelectric element by means of the heat of the heat medium. The cooling unit cools the thermoelectric element. The heat transfer unit has a second heat medium path through which the heat medium passes and which is connected to the first heat medium path, and heats, by using a heat source, the heat medium reduced in temperature as a result of heating the thermoelectric element. The pressure gauge detects the rise or fall of a value (pressure of heat medium) in accordance with the temperature of the heat source.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: January 9, 2024
    Assignee: Yanmar Power Technology Co., Ltd.
    Inventors: Yoshika Hatasako, Jiro Fukudome, Shuichi Nakagawa
  • Patent number: 11532777
    Abstract: A thermoelectric power generation device including: a heating unit having a heat medium passage in which a heat medium flows; a cooling unit having a cooling liquid passage in which a cooling liquid flows; a thermoelectric element having the heating unit and the cooling unit so as to generate power by utilizing a temperature difference between a condensation temperature of the heat medium and a temperature of the cooling liquid; a power generation output detection unit configured to detect a power generation output of the thermoelectric element; a heat medium pressure detection unit configured to detect a pressure of the heat medium; a storage unit for storing, in advance, a relationship between a power generation output of the thermoelectric element and the pressure of the heat medium; and an abnormality detection unit configured to detect an abnormality taking place in the thermoelectric power generation device.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: December 20, 2022
    Assignee: YANMAR POWER TECHNOLOGY CO., LTD.
    Inventors: Yoshika Hatasako, Jiro Fukudome, Yuichiro Tanaka, Shuichi Nakagawa
  • Publication number: 20220344559
    Abstract: With a thermo-siphon type heat exchanger including a heating section of and a heat transfer pipe of a thermoelectric power generation unit, the thermoelectric power generator recovers a heat from a hot gas flowing through a flow path and generates electricity. To the thermo-siphon type heat exchanger, a storage tank that stores a heat medium is connected in a communication state; transferring of the heat medium from the thermo-siphon type heat exchanger to the storage tank, and returning of the heat medium from the storage tank to the thermo-siphon type heat exchanger can adjust the heat medium amount in the thermo-siphon type heat exchanger. At least a part of the storage tank is placed in the flow path so that the stored heat medium is heated, and the stored heat medium can be cooled with a cooler that is capable of turning a cooling function ON/OFF.
    Type: Application
    Filed: April 21, 2022
    Publication date: October 27, 2022
    Applicant: Yanmar Holdings Co., Ltd.
    Inventors: Jiro FUKUDOME, Hirofumi UKAI, Shuji TAMAKI, Yoshika HATASAKO
  • Patent number: 11031535
    Abstract: A thermoelectric power generation system including a plurality of thermoelectric power generation devices. Each of the thermoelectric power generation devices includes: a heating unit having a heat medium passage in which a heat medium flows; a cooling unit having a cooling liquid passage in which a cooling liquid flows; a thermoelectric element having the heating unit and the cooling unit so as to generate power by utilizing a temperature difference between a condensation temperature of the heat medium and a temperature of the cooling liquid; and a heat transfer pipe communicated with the heat medium passage to form a circulation path in which the heat medium circulates. The heat transfer pipes of the respective thermoelectric power generation devices are arranged in a single flow path in which a high temperature fluid flows. The heat medium passages of the thermoelectric power generation devices are structured to communicate with each other.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: June 8, 2021
    Assignee: YANMAR POWER TECHNOLOGY CO., LTD.
    Inventors: Yoshika Hatasako, Jiro Fukudome, Yuichiro Tanaka, Shuichi Nakagawa
  • Patent number: 10950776
    Abstract: A thermoelectric power generation device including: a heating unit having a heat medium passage in which a heat medium flows, a cooling unit having a cooling liquid passage in which a cooling liquid flows, a thermoelectric element having the heating unit on one side and the cooling unit on another side, the thermoelectric element configured to generate power by utilizing a temperature difference between a condensation temperature of the heat medium that undergoes latent heat transfer in the heat medium passage and a temperature of the cooling liquid; and the thermoelectric power generation device further including a heat medium adjusting unit configured to adjust the pressure or the temperature of the heat medium.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: March 16, 2021
    Assignee: YANMAR POWER TECHNOLOGY CO., LTD.
    Inventors: Yoshika Hatasako, Jiro Fukudome, Yuichiro Tanaka, Shuichi Nakagawa
  • Publication number: 20210050502
    Abstract: A thermoelectric generation system is provided with: a thermoelectric element; a heating unit; a cooling unit; a heat transfer unit; a pressure gauge; a first valve; and a control unit. The thermoelectric element uses a temperature difference to generate power. The heating unit has a first heat medium path through which a heat medium passes, and heats the thermoelectric element by means of the heat of the heat medium. The cooling unit cools the thermoelectric element. The heat transfer unit has a second heat medium path through which the heat medium passes and which is connected to the first heat medium path, and heats, by using a heat source, the heat medium reduced in temperature as a result of heating the thermoelectric element. The pressure gauge detects the rise or fall of a value (pressure of heat medium) in accordance with the temperature of the heat source.
    Type: Application
    Filed: May 10, 2019
    Publication date: February 18, 2021
    Applicant: YANMAR POWER TECHNOLOGY CO., LTD.
    Inventors: Yoshika Hatasako, Jiro Fukudome, Shuichi Nakagawa
  • Publication number: 20200343430
    Abstract: A thermoelectric power generation device including a thermoelectric element having a first side provided to a heating unit and a second side provided to a cooling unit, and a heat transfer pipe arranged in a passage in which a high temperature fluid flows. The heating unit and the heat transfer pipe have internal spaces communicating with each other. The internal space of the heating unit and the internal space of the heat transfer pipe form a circulation path in which a heat medium is circulated. An outlet of the heat transfer pipe from which the heat medium is discharged is provided in a position higher than an inlet of the heat transfer pipe into which the heat medium flows. The heat transfer pipe vaporizes the heat medium flowing in the circulation path by using heat of the high temperature fluid. The heating unit condenses the heat medium vaporized.
    Type: Application
    Filed: May 9, 2017
    Publication date: October 29, 2020
    Applicant: Yanmar Co., Ltd.
    Inventors: Yoshika HATASAKO, Jiro FUKUDQME, Yuichiro TANAKA, Shuichi NAKAGAWA
  • Publication number: 20200328337
    Abstract: A thermoelectric power generation device that can improve power generation efficiency. The thermoelectric power generation device (1A) includes thermoelectric elements (2) having their first sides provided on heating units (3) and their second sides provided on cooling units (4). The thermoelectric elements (2) are provided on both sides of the heating unit (3). The cooling units (4) are provided on both sides of the heating unit (3) so as to face each other across the thermoelectric elements (2).
    Type: Application
    Filed: May 25, 2017
    Publication date: October 15, 2020
    Applicant: Yanmar Co., Ltd.
    Inventors: Yoshika HATASAKO, Jiro FUKUDOME, Yuichiro TANAKA, Shuichi NAKAGAWA
  • Publication number: 20200091395
    Abstract: A thermoelectric power generation device including: a heating unit having a heat medium passage in which a heat medium flows; a cooling unit having a cooling liquid passage in which a cooling liquid flows; a thermoelectric element having the heating unit and the cooling unit so as to generate power by utilizing a temperature difference between a condensation temperature of the heat medium and a temperature of the cooling liquid; a power generation output detection unit configured to detect a power generation output of the thermoelectric element; a heat medium pressure detection unit configured to detect a pressure of the heat medium; a storage unit for storing, in advance, a relationship between a power generation output of the thermoelectric element and the pressure of the heat medium; and an abnormality detection unit configured to detect an abnormality taking place in the thermoelectric power generation device.
    Type: Application
    Filed: September 27, 2017
    Publication date: March 19, 2020
    Applicant: Yanmar Co., Ltd.
    Inventors: Yoshika HATASAKO, Jiro FUKUDOME, Yuichiro TANAKA, Shuichi NAKAGAWA
  • Publication number: 20190334073
    Abstract: A thermoelectric power generation device including: a heating unit having a heat medium passage in which a heat medium flows, a cooling unit having a cooling liquid passage in which a cooling liquid flows, a thermoelectric element having the heating unit on one side and the cooling unit on another side, the thermoelectric element configured to generate power by utilizing a temperature difference between a condensation temperature of the heat medium that undergoes latent heat transfer in the heat medium passage and a temperature of the cooling liquid; and the thermoelectric power generation device further including a heat medium adjusting unit configured to adjust the pressure or the temperature of the heat medium.
    Type: Application
    Filed: September 27, 2017
    Publication date: October 31, 2019
    Applicant: Yanmar Co., Ltd.
    Inventors: Yoshika HATASAKO, Jiro FUKUDOME, Yuichiro TANAKA, Shuichi NAKAGAWA
  • Publication number: 20190331425
    Abstract: A thermoelectric power generation system including a plurality of thermoelectric power generation devices. Each of the thermoelectric power generation devices includes: a heating unit having a heat medium passage in which a heat medium flows; a cooling unit having a cooling liquid passage in which a cooling liquid flows; a thermoelectric element having the heating unit and the cooling unit so as to generate power by utilizing a temperature difference between a condensation temperature of the heat medium and a temperature of the cooling liquid; and a heat transfer pipe communicated with the heat medium passage to form a circulation path in which the heat medium circulates. The heat transfer pipes of the respective thermoelectric power generation devices are arranged in a single flow path in which a high temperature fluid flows. The heat medium passages of the thermoelectric power generation devices are structured to communicate with each other.
    Type: Application
    Filed: September 27, 2017
    Publication date: October 31, 2019
    Applicant: Yanmar Co., Ltd.
    Inventors: Yoshika HATASAKO, Jiro FUKUDOME, Yuichiro TANAKA, Shuichi NAKAGAWA
  • Patent number: 9620697
    Abstract: The present invention provides a thermoelectric conversion material of which the structure is controlled to have nano-order microscopic pores and which has a low thermal conductivity and has an improved thermoelectric performance index. In the thermoelectric conversion material having a thermoelectric semiconductor layer formed on a block copolymer substrate that comprises a block copolymer having microscopic pores, wherein the block copolymer comprises a polymer unit (A) formed of a monomer capable of forming a homopolymer having a glass transition temperature of 50° C. or higher, and a polymer unit (B) formed of a conjugated dienic polymer.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: April 11, 2017
    Assignees: KYUSHU INSTITUTE OF TECHNOLOGY, LINTEC CORPORATION
    Inventors: Tsuyoshi Mutou, Koji Miyazaki, Yoshika Hatasako, Kunihisa Kato
  • Publication number: 20150013741
    Abstract: The present invention provides a thermoelectric conversion material of which the structure is controlled to have nano-order microscopic pores and which has a low thermal conductivity and has an improved thermoelectric performance index. In the thermoelectric conversion material having a thermoelectric semiconductor layer formed on a block copolymer substrate that comprises a block copolymer having microscopic pores, wherein the block copolymer comprises a polymer unit (A) formed of a monomer capable of forming a homopolymer having a glass transition temperature of 50° C. or higher, and a polymer unit (B) formed of a conjugated dienic polymer.
    Type: Application
    Filed: February 19, 2013
    Publication date: January 15, 2015
    Applicants: KYUSHU INSTITUTE OF TECHNOLOGY, LINTEC CORPORATION
    Inventors: Tsuyoshi Mutou, Koji Miyazaki, Yoshika Hatasako, Kunihisa Kato