Patents by Inventor Kouhei KOBA

Kouhei KOBA 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: 11807796
    Abstract: The position of the stabilizer container 7 in the circulation route is not limited. The stabilizer container 7 is preferably disposed between the evaporator and the condenser between which the refrigerant flows in the circulation route as a liquid refrigerant. Specifically, the stabilizer container 7 is preferably disposed between the outdoor heat exchanger 4 and the expansion mechanism 5 or between the indoor heat exchanger 6 and the expansion mechanism 5. During cooling, the outdoor heat exchanger 4 functions as a condenser and the indoor heat exchanger 6 functions as an evaporator. During heating, the outdoor heat exchanger 4 functions as an evaporator and the indoor heat exchanger 6 functions as a condenser.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: November 7, 2023
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Tatsumi Tsuchiya, Kouhei Koba, Masaru Tanaka
  • Patent number: 11377578
    Abstract: A heat transfer device that contains a circulation route enclosing a refrigerant containing a hydrohaloolefin, the heat transfer device being capable of reducing the influence of oxygen entrapped in the circulation route; and a heat transfer method using the heat transfer device. Also, a heat transfer device that contains a circulation route enclosing a refrigerant containing at least one member selected from the group consisting of hydrofluoroolefins (HFOs), hydrochlorofluoroolefins (HCFOs), and hydrochloroolefins (HCOs); and the device containing an oxygen adsorption device between an evaporator and a compressor present in the circulation route; and a heat transfer method using the same.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: July 5, 2022
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Tatsumi Tsuchiya, Kouhei Koba, Masaru Tanaka
  • Publication number: 20210284891
    Abstract: The present invention provides a heat transport device in which a hydrohaloolefin-containing refrigerant is enclosed in a circulation route, and the heat transport device is capable of reducing the influence of oxygen entrapped in the circulation route. The present invention also provides a heat transport method using the heat transport device. In the heat transport device 1, a refrigerant comprising at least one of hydrofluoroolefins (HFOs), hydrochlorofluoroolefins (HCFOs), or hydrochloroolefins (HCOs) is enclosed in a circulation route, and a stabilizer container comprising an acid scavenger and/or an antioxidant is disposed in the circulation route. The antioxidant is at least one member selected from the group consisting of alkylcatechols, alkoxyphenols, benzoquinones, phenothiazines, and phthalates, and the acid scavenger is at least one member selected from the group consisting of aliphatic alcohols, polyhydric alcohols, amines, terpenes, alkyl epoxides, and alkenyl tolyls.
    Type: Application
    Filed: October 31, 2017
    Publication date: September 16, 2021
    Inventors: Tatsumi TSUCHIYA, Kouhei KOBA, Masaru TANAKA
  • Publication number: 20200017742
    Abstract: The present invention provides a heat transfer device comprising a circulation route enclosing a refrigerant containing a hydrohaloolefin, the heat transfer device being capable of reducing the influence of oxygen entrapped in the circulation route; and a heat transfer method using the heat transfer device. Provided are a heat transfer device comprising a circulation route enclosing a refrigerant containing at least one member selected from the group consisting of hydrofluoroolefins (HFOs), hydrochlorofluoroolefins (HCFOs), and hydrochloroolefins (HCOs); and the device comprising an oxygen adsorption device between an evaporator and a compressor present in the circulation route; and a heat transfer method using the same.
    Type: Application
    Filed: December 8, 2017
    Publication date: January 16, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tatsumi TSUCHIYA, Kouhei KOBA, Masaru TANAKA