公开(公告)号：US20230323178A1

公开(公告)日：2023-10-12

申请号：US18131048

申请日：2023-04-05

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yuka WATANABE ,  Shun OHKUBO ,  Tomoyuki GOTOU

IPC: C09K5/04

CPC classification number: C09K5/045

Abstract: Disproportionation in a refrigerant comprising HFO-1132 is suppressed. A composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), 2,3,3,3-tetrafluoro-1-propene (R1234yf), and propane.

公开(公告)号：US20230265329A1

公开(公告)日：2023-08-24

申请号：US18132017

申请日：2023-04-07

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tomoyuki GOTOU ,  Takashi YOSHIMURA ,  Takashi USUI ,  Yuuko ITO ,  Yuka WATANABE

IPC: C09K5/04

CPC classification number: C09K5/045 ,  C09K2205/126 ,  C09K2205/128 ,  C09K2205/22

Abstract: An object of the present disclosure is to provide a composition having excellent stability of a refrigerant. Provided is a composition comprising a refrigerant and carbon, the refrigerant comprising at least one member selected from the group consisting of HFO-1234yf, HFO-1132(E/Z), HFO-1132a, HFO-1123, and FO-1114.

公开(公告)号：US20230242801A1

公开(公告)日：2023-08-03

申请号：US18132039

申请日：2023-04-07

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tomoyuki GOTOU ,  Takashi YOSHIMURA ,  Takashi USUI ,  Yuuko ITO ,  Yuka WATANABE ,  Youhei TAKAKURA ,  Takuma IWASAKA

IPC: C09K5/04

CPC classification number: C09K5/045 ,  C09K2205/22 ,  C09K2205/126

Abstract: An object of the present disclosure is to provide a composition in which a disproportionation reaction of a refrigerant is suppressed, and in which the refrigerant has excellent stability. Another object of the present disclosure is to provide a composition comprising a refrigerant useful for air-conditioning systems. The composition comprises a refrigerant, wherein the refrigerant comprises a refrigerant that undergoes disproportionation and a refrigerant that does not undergo disproportionation.

公开(公告)号：US20230203356A1

公开(公告)日：2023-06-29

申请号：US18115915

申请日：2023-03-01

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yuka WATANABE ,  Tomoyuki GOTOU ,  Yuuko ITOU ,  Takashi USUI ,  Takashi YOSHIMURA

IPC: C09K5/04

CPC classification number: C09K5/045 ,  C09K2205/126

Abstract: The propagation of a disproportionation reaction of a refrigerant is suppressed. Disclosed is a method that uses a composition as a refrigerant in a refrigerant circuit, in which the composition includes one or more compounds selected from the group consisting of ethylene-based fluoroolefins, 2,3,3,3-tetrafluoropropene, and 1,3,3,3-tetrafluoropropene, and the refrigerant circuit includes a compressor, a four-way switching valve, and a first refrigerant pipe connecting the compressor and the four-way switching valve, the first refrigerant pipe having a pipe diameter less than or equal to ⅜ inch or a length greater than or equal to 5 cm.

公开(公告)号：US20230203357A1

公开(公告)日：2023-06-29

申请号：US18117189

申请日：2023-03-03

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yuka WATANABE ,  Tomoyuki GOTOU ,  Yuuko ITOU ,  Takashi USUI ,  Takashi YOSHIMURA

IPC: C09K5/04

CPC classification number: C09K5/045 ,  C09K2205/126 ,  C09K2205/22

Abstract: A pressure increase in a compressor is suppressed. Disclosed is a method that uses a composition as a refrigerant in a refrigerant circuit, in which the composition includes one or more compounds selected from the group consisting of ethylene-based fluoroolefins, 2,3,3,3-tetrafluoropropene, and 1,3,3,3-tetrafluoropropene, and in the refrigerant circuit, the total internal volume of a refrigerant pipe and a component that are connected to a compressor is greater than or equal to 0.7 times the internal volume of the compressor.

公开(公告)号：US20220135504A1

公开(公告)日：2022-05-05

申请号：US17554786

申请日：2021-12-17

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tomoyuki GOTOU ,  Shun OHKUBO ,  Yuka WATANABE

IPC: C07C21/19 ,  C09K5/04

Abstract: Provided is a composition that contains a fluoroethylene having one or more fluorine atoms, the composition having excellent stability of the fluoroethylene. The fluoroethylene composition of the present disclosure contains a fluoroethylene having one or more fluorine atoms, water, and oxygen, the composition having a water content of 100 mass ppm or less based on the mass of the fluoroethylene, and an oxygen content of 0.35 mol % or less based on the fluoroethylene. The fluoroethylene composition has excellent stability of fluoroethylene.

公开(公告)号：US20230242800A1

公开(公告)日：2023-08-03

申请号：US18131426

申请日：2023-04-06

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takashi USUI ,  Tomoyuki GOTOU ,  Yuuki YOTSUMOTO ,  Takashi YOSHIMURA ,  Yuuko ITO ,  Yuka WATANABE

IPC: C09K5/04 ,  C10M107/34 ,  C10M105/38 ,  C10M107/24 ,  F25B9/00

CPC classification number: C09K5/045 ,  C10M107/34 ,  C10M105/38 ,  C10M107/24 ,  F25B9/006 ,  C09K2205/22 ,  C09K2205/126 ,  C09K2205/128 ,  C10M2209/1033 ,  C10M2207/2835 ,  C10M2209/043 ,  C10N2040/30

Abstract: An object of the present disclosure is to provide a composition in which disproportionation of a refrigerant is suppressed, a heat cycle system using the composition, and a method for suppressing a disproportionation reaction of a refrigerant. A composition comprising a refrigerant and a refrigeration oil, the refrigerant comprising at least one refrigerant selected from the group consisting of HFO-1141, HFO-1132(E/Z), HFO-1132a, HFO-1123, and FO-1114, the refrigeration oil having a contact angle with a substrate of 0.1°≤Θ≤90°, the substrate comprising at least one member selected from the group consisting of engineering plastics, organic films, inorganic films, glass, and metals.

公开(公告)号：US20230159810A1

公开(公告)日：2023-05-25

申请号：US18095595

申请日：2023-01-11

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takashi USUI ,  Tomoyuki GOTOU ,  Takashi YOSHIMURA ,  Yuuko ITOU ,  Yuka WATANABE ,  Takuma IWASAKA ,  Youhei TAKAKURA ,  Yuuki YOTSUMOTO

IPC: C09K5/04

CPC classification number: C09K5/045 ,  C09K2205/126

Abstract: The propagation of a disproportionation reaction of a refrigerant is suppressed. Disclosed is a method of using a composition as a refrigerant in a compressor, in which the composition includes one or more compounds selected from the group of ethylene-based fluoroolefins, 2,3,3,3-tetrafluoropropene, and 1,3,3,3-tetrafluoropropene, and the dimension of a gap of a predetermined portion through which the refrigerant flows around an ignition energy generation portion in the compressor is less than or equal to 2 mm.

公开(公告)号：US20230146651A1

公开(公告)日：2023-05-11

申请号：US18091670

申请日：2022-12-30

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tomoyuki GOTOU ,  Takashi YOSHIMURA ,  Takashi USUI ,  Yuuko ITOU ,  Yuka WATANABE ,  Takuma IWASAKA ,  Youhei TAKAKURA ,  Yuuki YOTSUMOTO ,  Satoshi TOKUNO ,  Ryohei DEGUCHI

IPC: C09K5/04 ,  F25B1/00

CPC classification number: C09K5/045 ,  F25B1/00 ,  C09K2205/22 ,  C09K2205/126

Abstract: The propagation of a disproportionation reaction of a refrigerant is suppressed. Disclosed is a method that uses a composition as a refrigerant in a compressor, in which the composition includes one or more compounds selected from the group of ethylene-based fluoroolefins, 2,3,3,3-tetrafluoropropene, and 1,3,3,3-tetrafluoropropene, and the flow rate of the refrigerant flowing through a region around an ignition energy generation portion in the compressor under a predetermined high-pressure condition is greater than or equal to 1 m/s.

公开(公告)号：US20230139313A1

公开(公告)日：2023-05-04

申请号：US18091038

申请日：2022-12-29

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tomoyuki GOTOU ,  Takashi YOSHIMURA ,  Takashi USUI ,  Yuuko ITOU ,  Yuka WATANABE ,  Takuma IWASAKA ,  Youhei TAKAKURA ,  Yuuki YOTSUMOTO ,  Satoshi TOKUNO ,  Ryohei DEGUCHI

IPC: C09K5/04 ,  F25B13/00

Abstract: The propagation of a disproportionation reaction of a refrigerant is suppressed. Disclosed is a method that uses a composition as a refrigerant in a compressor, in which the composition includes one or more compounds selected from the group of ethylene-based fluoroolefins, 2,3,3,3-tetrafluoropropene, and 1,3,3,3-tetrafluoropropene, and the flow rate of the refrigerant flowing through a discharge pipe of the compressor under a predetermined high-pressure condition is greater than or equal to 1 m/s.