Patents by Inventor Daisuke Karube

Daisuke Karube 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: 11220658
    Abstract: An object of the present invention is to provide a solvent and a detergent that have excellent basic properties as solvents or detergents, such as solubility, and that have a boiling point, flammability, toxicity, GWP, and ODP that are all within preferable ranges. To achieve the above object, the present invention provides a solvent composition or detergent composition comprising a hydrochlorofluoropropene represented by the formula: CX3CX?CX2, wherein each X is the same or different and is F or Cl, at least one X is F, and at least three X are Cl; the hydrochlorofluoropropene having an atmospheric pressure boiling point of 50° C. or higher.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: January 11, 2022
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventor: Daisuke Karube
  • Publication number: 20210403399
    Abstract: Provided is a method for obtaining HFO-1132(E) and/or HFO-1132(Z) efficiently. The method is a method for producing HFO-1132(E) and/or HFO-1132(Z), comprising supplying a composition containing HFO-1132(E) and/or HFO-1132(Z) to a reactor, and performing an isomerization reaction between HFO-1132(E) and HFO-1132(Z).
    Type: Application
    Filed: September 13, 2021
    Publication date: December 30, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tatsuya TAKAKUWA, Osamu YAMAMOTO, Daisuke KARUBE
  • Publication number: 20210403837
    Abstract: An object of the present invention is to provide a solvent and a detergent that have excellent basic properties as solvents or detergents, such as solubility, and that have a boiling point, flammability, toxicity, GWP, and ODP that are all within preferable ranges. To achieve the above object, the present invention provides a solvent composition or detergent composition comprising a hydrochlorofluoropropene represented by the formula: CX3CX?CX2, wherein each X is the same or different and is F or Cl, at least one X is F, and at least three X are Cl; the hydrochlorofluoropropene having an atmospheric pressure boiling point of 50° C. or higher.
    Type: Application
    Filed: September 9, 2021
    Publication date: December 30, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventor: Daisuke KARUBE
  • Publication number: 20210309902
    Abstract: No studies have been made regarding what kinds of refrigerants should be used in a refrigeration cycle device for a vehicle. An air conditioner (1) for a vehicle includes a refrigerant circuit (10) and a refrigerant that is sealed in the refrigerant circuit (10). The refrigerant circuit (10) includes a compressor (80), a first heat exchanger (85), which serves as a heat dissipater in a dehumidifying heating mode, an outside-air heat exchanger (82), a cooling control valve (87), and a second heat exchanger (86), which serves as an evaporator in the dehumidifying heating mode. The refrigerant is a refrigerant having a low GWP.
    Type: Application
    Filed: July 16, 2019
    Publication date: October 7, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Eiji KUMAKURA, Kazuhiro FURUSHO, Masaru TANAKA, Shun OHKUBO, Mitsushi ITANO, Yuuki YOTSUMOTO, Akihito MIZUNO, Tomoyuki GOTOU, Yasufu YAMADA, Tatsumi TSUCHIYA, Kenji GOBOU, Hitomi KUROKI, Daisuke KARUBE, Tatsuya TAKAKUWA, Tetsushi TSUDA
  • Publication number: 20210301224
    Abstract: A composition containing 1,2-dichloro-3,3,3-trifluoropropene (HCFO-1223xd) and a fluorine-based oil.
    Type: Application
    Filed: August 5, 2019
    Publication date: September 30, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Daisuke KARUBE, Yuuko TSUTSUI
  • Publication number: 20210198547
    Abstract: The present invention provides a refrigerant composition having performance such as ASHRAE non-flammability, a large refrigerating capacity, a GWP lower than that of HFC-134a, and a COP that is equal to that of HFC-134a. A refrigerant composition comprising HFO-1234ze(E) and HFC-134, which is for use in at least one refrigeration apparatus selected from the group consisting of refrigerators, freezers, water coolers, ice makers, refrigerating showcases, freezing showcases, freezing and refrigerating units, refrigerating machines for freezing and refrigerating warehouses, chillers (chilling units), turbo refrigerating machines, and screw refrigerating machines.
    Type: Application
    Filed: October 15, 2018
    Publication date: July 1, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Shun OHKUBO, Daisuke KARUBE, Akihito MIZUNO, Hitomi KUROKI, Kazuhiro TAKAHASHI, Yasufu YAMADA, Tatsuya TAKAKUWA, Yuuki YOTSUMOTO
  • Publication number: 20210171815
    Abstract: Provided is a mixed refrigerant having two types of performance, i.e., a coefficient of performance that is equivalent to that of R410A and a sufficiently low GWP. Provided as a means for a solution is a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), trifluoroethylene (HFO-1123), and difluoromethane (R32) at specific concentrations.
    Type: Application
    Filed: December 18, 2018
    Publication date: June 10, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Mitsushi ITANO, Daisuke KARUBE, Yuuki YOTSUMOTO, Kazuhiro TAKAHASHI
  • Publication number: 20210164703
    Abstract: An air-conditioning unit that is able to suppress ignition at an electric heater even when leakage of refrigerant occurs while a low-GWP refrigerant is used is provided. In an outdoor unit (20) including a casing (60), a compressor (21) provided inside the casing (60) and configured to compress refrigerant containing 1,2-difluoroethylene, and a drain pan heater (54) provided inside the casing (60), an electric power consumption of the drain pan heater (54) is lower than or equal to 300 W.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 3, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Eiji KUMAKURA, Takuro YAMADA, Atsushi YOSHIMI, Ikuhiro IWATA, Mitsushi ITANO, Daisuke KARUBE, Yuuki YOTSUMOTO, Kazuhiro TAKAHASHI, Yuzo KOMATSU, Shun OHKUBO, Tatsuya TAKAKUWA
  • Publication number: 20210164701
    Abstract: In an air conditioner that uses a refrigerant mixture containing at least 1,2-difluoroethylene, high efficiency is achieved. In the air conditioner (1), a compressor (100, 200) can be driven without interposing a power conversion device between an AC power source (90, 190) and a motor (70, 170). Thus, it is possible to provide the air conditioner (1) that is environmentally friendly and has a relatively inexpensive configuration.
    Type: Application
    Filed: December 18, 2018
    Publication date: June 3, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Keisuke OHTSUKA, Mitsushi ITANO, Daisuke KARUBE, Yuuki YOTSUMOTO, Kazuhiro TAKAHASHI, Yuzo KOMATSU, Shun OHKUBO, Tatsuya TAKAKUWA, Tetsushi TSUDA
  • Publication number: 20210163804
    Abstract: A refrigeration cycle apparatus (10) includes a refrigerant circuit (11) including a compressor (12), a heat source-side heat exchanger (13), an expansion mechanism (14), and a usage-side heat exchanger (15). In the refrigerant circuit (11), a refrigerant containing at least 1,2-difluoroethylene (HFO-1132 (E)) is sealed. At least during a predetermined operation, in at least one of the heat source-side heat exchanger (13) and the usage-side heat exchanger (15), a flow of the refrigerant and a flow of a heating medium that exchanges heating with the refrigerant are counter flows.
    Type: Application
    Filed: December 17, 2018
    Publication date: June 3, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Eiji KUMAKURA, Takuro YAMADA, Atsushi YOSHIMI, Ikuhiro IWATA, Mitsushi ITANO, Daisuke KARUBE, Yuuki YOTSUMOTO, Kazuhiro TAKAHASHI, Tatsuya TAKAKUWA, Yuzo KOMATSU, Shun OHKUBO
  • Publication number: 20210164698
    Abstract: In an air conditioner that uses a refrigerant mixture containing at least 1,2-difluoroethylene, high efficiency is achieved. The motor rotation rate of a compressor (100) can be changed in accordance with an air conditioning load, and thus a high annual performance factor (APF) can be achieved. In addition, an electrolytic capacitor is not required on an output side of a rectifier circuit (21), and thus an increase in the size and cost of the circuit is suppressed.
    Type: Application
    Filed: December 18, 2018
    Publication date: June 3, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Keisuke OHTSUKA, Mitsushi ITANO, Daisuke KARUBE, Yuuki YOTSUMOTO, Kazuhiro TAKAHASHI, Yuzo KOMATSU, Shun OHKUBO, Tatsuya TAKAKUWA, Tetsushi TSUDA
  • Publication number: 20210095897
    Abstract: A heat source unit and a refrigeration cycle apparatus that are able to reduce damage to a connection pipe when a refrigerant containing at least 1,2-difluoroethylene is used are provided. An outdoor unit (20) that is connected via a liquid-side connection pipe (6) and a gas-side connection pipe (5) to an indoor unit (30) including an indoor heat exchanger (31) and that is a component of an air conditioner (1) includes a compressor (21) and an outdoor heat exchanger (23). A refrigerant containing at least 1,2-difluoroethylene is used as a refrigerant. A design pressure of the outdoor unit (20) is lower than 1.5 times a design pressure of each of the liquid-side connection pipe (6) and the gas-side connection pipe (5).
    Type: Application
    Filed: December 17, 2018
    Publication date: April 1, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Eiji KUMAKURA, Takuro YAMADA, Atsushi YOSHIMI, Ikuhiro IWATA, Mitsushi ITANO, Daisuke KARUBE, Yuuki YOTSUMOTO, Kazuhiro TAKAHASHI, Tatsuya TAKAKUWA, Yuzo KOMATSU, Shun OHKUBO
  • Publication number: 20210087446
    Abstract: An object is to provide a mixed refrigerant having four types of performance, i.e., a coefficient of performance and a refrigerating capacity that are equivalent to those of R410A, a sufficiently low GWP, and a lower flammability (Class 2L) according to the ASHRAE standard. Provided as a means for a solution is a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)) and trifluoroethylene (HFO-1123) in a total amount of 99.5 mass % or more based on the entire refrigerant, and the refrigerant comprising 62.5 mass % to 72.5 mass % of HFO-1132(E) based on the entire refrigerant.
    Type: Application
    Filed: December 18, 2018
    Publication date: March 25, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Mitsushi ITANO, Daisuke KARUBE, Yuuki YOTSUMOTO, Kazuhiro TAKAHASHI, Tatsuya TAKAKUWA, Yuzo KOMATSU
  • Publication number: 20210079277
    Abstract: This invention provides a composition comprising a compound that has low GWP in spite of having low flammability, and that is less likely to lead to a negative-pressure state during operation even when applied to a large air conditioner; and to a refrigerating machine, large air conditioner, or industrial process cooler, each comprising the composition. Specifically, the present invention provides a composition comprising a refrigerant, the refrigerant comprising a compound represented by the following general formula (1): CmHnFxCly (1), wherein m is 4?m?10, n+x+y is equal to 2m?2, and the compound has a triple bond in its molecule.
    Type: Application
    Filed: March 17, 2018
    Publication date: March 18, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Yuuki YOTSUMOTO, Daisuke KARUBE, Yasufu YAMADA
  • Publication number: 20210079278
    Abstract: An object is to provide a mixed refrigerant having four types of performance, i.e., a coefficient of performance and a refrigerating capacity that are equivalent to those of R410A, a sufficiently low GWP, and a lower flammability (Class 2L) according to the ASHRAE standard. Provided as a means for a solution is a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)) and trifluoroethylene (HFO-1123) in a total amount of 99.5 mass % or more based on the entire refrigerant, and the refrigerant comprising 62.0 mass % to 72.0 mass % of HFO-1132(E) based on the entire refrigerant.
    Type: Application
    Filed: October 17, 2018
    Publication date: March 18, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Mitsushi ITANO, Daisuke KARUBE, Yuuki YOTSUMOTO, Kazuhiro TAKAHASHI, Tatsuya TAKAKUWA, Yuzo KOMATSU
  • Publication number: 20210080152
    Abstract: Provided is a mixed refrigerant having three types of performance; i.e., a refrigerating capacity equivalent to that of R410A, a sufficiently low GWP, and a lower flammability (Class 2L) according to the ASHRAE standard. Provided as a means for a solution is a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), difluoromethane (R32), and 2,3,3,3-tetrafluoro-1-propene (R1234yf), each in a specific concentration.
    Type: Application
    Filed: December 18, 2018
    Publication date: March 18, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Mitsushi ITANO, Daisuke KARUBE, Yuuki YOTSUMOTO, Kazuhiro TAKAHASHI
  • Publication number: 20210071055
    Abstract: An object is to provide a mixed refrigerant having three types of performance, i.e., a refrigerating capacity and a coefficient of performance that are equivalent to those of R410A, and a sufficiently low GWP. Provided as a means for achieving the object is a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), trifluoroethylene (HFO-1123), and 2,3,3,3-tetrafluoro-1-propene (R1234yf).
    Type: Application
    Filed: December 18, 2018
    Publication date: March 11, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Mitsushi ITANO, Daisuke KARUBE, Yuuki YOTSUMOTO, Kazuhiro TAKAHASHI
  • Publication number: 20210018191
    Abstract: A heat exchange unit is provided with which, even if a flammable refrigerant is used, the likelihood of the refrigerant reaching an electric component unit is reduced. An outdoor unit (20) constitutes a portion of an air-conditioning apparatus (1), and is connected to an indoor unit (30) via a liquid-side refrigerant connection pipe (6) and a gas-side refrigerant connection pipe (5). The outdoor unit (20) includes an outdoor housing (50), an outdoor heat exchanger (23) disposed inside the outdoor housing (50) and in which a refrigerant flows, a liquid-side shutoff valve (29) connected to the liquid-side refrigerant connection pipe (6), a gas-side shutoff valve (28) connected to the gas-side refrigerant connection pipe (5), and an outdoor electric component unit (8) disposed inside the outdoor housing (50). The refrigerant is a flammable refrigerant containing at least 1,2-difluoroethylene.
    Type: Application
    Filed: June 25, 2020
    Publication date: January 21, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Mitsushi Itano, Daisuke Karube, Yuuki Yotsumoto, Kazuhiro Takahashi, Tatsuya Takakuwa, Yuzo Komatsu, Shun Ohkubo, Tetsushi Tsuda, Yumi Toda, Takeo Abe
  • Publication number: 20210003323
    Abstract: An air conditioning unit capable of performing a refrigeration cycle using a small-GWP refrigerant is provided. A refrigeration cycle apparatus (1, 1a to 1m) includes a refrigerant circuit (10) including a compressor (21), a condenser (23, 31, 36), a decompressing section (24, 44, 45, 33, 38), and an evaporator (31, 36, 23), and a refrigerant containing at least 1,2-difluoroethylene enclosed in the refrigerant circuit (10).
    Type: Application
    Filed: December 10, 2018
    Publication date: January 7, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Eiji KUMAKURA, Takuro YAMADA, Atsushi YOSHIMI, Ikuhiro IWATA, Mitsushi ITANO, Daisuke KARUBE, Yuuki YOTSUMOTO, Kazuhiro TAKAHASHI, Tatsuya TAKAKUWA, Yuzo KOMATSU, Shun OHKUBO
  • Publication number: 20200392388
    Abstract: Provided is a refrigerant composition having two types of performance, i.e., a coefficient of performance that is equivalent to that of R410A and a sufficiently low GWP. Provided is a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), trifluoroethylene (HFO-1123), and difluoromethane (R32) at specific concentrations.
    Type: Application
    Filed: June 26, 2020
    Publication date: December 17, 2020
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Mitsushi ITANO, Daisuke KARUBE, Yuuki YOTSUMOTO, Kazuhiro TAKAHASHI