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公开(公告)号：US20210363396A1
公开(公告)日：2021-11-25
申请号：US17394907
申请日：2021-08-05
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Kazuhiro TAKAHASHI , Tsubasa NAKAUE , Takehiro CHAKI , Takashi USUI , Megumi KUSHIDA
IPC: C09K5/04
Abstract: An object is to provide an azeotropic or azeotrope-like composition containing HFO-1132(E) and HFC-143a, and a method for separating HFO-1132(E) and HFC-143a from a composition containing HFO-1132(E) and HFC-143a. Provided as a solution to achieve the object is a composition containing a refrigerant, wherein the refrigerant is azeotropic or azeotrope-like and contains trans-1, 2-difluoroethylene (HFO-1132(E)) and 1,1,1-trifluoroethane (HFC-143a), and the proportion of HFO-1132(E) is 80 mass % or more and the proportion of HFC-143a is 20 mass % or less based on the total amount of HFO-1132(E) and HFC-143a in the refrigerant.
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公开(公告)号：US20210309593A1
公开(公告)日：2021-10-07
申请号：US17350785
申请日：2021-06-17
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Tomoyuki IWAMOTO , Takashi USUI , Takehiro CHAKI , Kazuhiro TAKAHASHI , Tsubasa NAKAUE
IPC: C07C17/087 , B01J19/24 , B01J21/18 , B01J23/44 , C07C17/25
Abstract: The production method according to the present disclosure comprises obtaining a product comprising a fluoroethane from a fluoroethylene by a reaction in the presence of at least one catalyst. The reaction is performed in two or more reaction zones. Each reaction zone comprises a catalyst, and the fluoroethylene is supplied to each reaction zone to perform the reaction.
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公开(公告)号：US20210079278A1
公开(公告)日：2021-03-18
申请号：US16772351
申请日：2018-10-17
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Mitsushi ITANO , Daisuke KARUBE , Yuuki YOTSUMOTO , Kazuhiro TAKAHASHI , Tatsuya TAKAKUWA , Yuzo KOMATSU
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.
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公开(公告)号：US20210003323A1
公开(公告)日：2021-01-07
申请号：US16955465
申请日：2018-12-10
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Eiji KUMAKURA , Takuro YAMADA , Atsushi YOSHIMI , Ikuhiro IWATA , Mitsushi ITANO , Daisuke KARUBE , Yuuki YOTSUMOTO , Kazuhiro TAKAHASHI , Tatsuya TAKAKUWA , Yuzo KOMATSU , Shun OHKUBO
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).
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25.发明申请公开(公告)号：US20200369934A1
公开(公告)日：2020-11-26
申请号：US16913628
申请日：2020-06-26
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Mitsushi ITANO , Daisuke KARUBE , Yuuki YOTSUMOTO , Kazuhiro TAKAHASHI , Shun OHKUBO
IPC: C09K5/04
Abstract: An object of the present invention is to provide a mixed refrigerant having three types of performance; i.e., a refrigerating capacity (also referred to as cooling capacity) and a coefficient of performance (COP) 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).
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Patent Agency Ranking
公开(公告)号：US20200326110A1
公开(公告)日：2020-10-15
申请号：US16913419
申请日：2020-06-26
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Yoshinari ASANO , Keiji AOTA , Mitsushi ITANO , Daisuke KARUBE , Yuuki YOTSUMOTO , Kazuhiro TAKAHASHI , Yuzo KOMATSU , Shun OHKUBO , Tatsuya TAKAKUWA , Tetsushi TSUDA
Abstract: High efficiency of a compressor that compresses a mixed refrigerant containing at least 1,2-difluoroethylene is achieved. A compressor (100) includes a motor (70) that has a rotor (71) including permanent magnets (712) and thus is suitable for a variable capacity compressor in which the number of rotations of the motor can be changed. In this case, it is possible to change the number of rotations of the motor in accordance with an air conditioning load in an air conditioner (1) that uses a mixed refrigerant containing at least 1,2-difluoroechylene. It is thus possible to enable high efficiency of the compressor (100).
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公开(公告)号：US20200326105A1
公开(公告)日：2020-10-15
申请号：US16912068
申请日：2020-06-25
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Eiji KUMAKURA , Takuro YAMADA , Atsushi YOSHIMI , Ikuhiro IWATA , Mitsushi ITANO , Daisuke KARUBE , Yuuki YOTSUMOTO , Kazuhiro TAKAHASHI , Tatsuya TAKAKUWA , Yuzo KOMATSU , Shun OHKUBO
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).
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公开(公告)号：US20200326102A1
公开(公告)日：2020-10-15
申请号：US16912003
申请日：2020-06-25
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Eiji KUMAKURA , Takuro YAMADA , Atsushi YOSHIMI , Ikuhiro IWATA , Mitsushi ITANO , Daisuke KARUBE , Yuuki YOTSUMOTO , Kazuhiro TAKAHASHI , Tatsuya TAKAKUWA , Yuzo KOMATSU , Shun OHKUBO
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).
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公开(公告)号：US20200326101A1
公开(公告)日：2020-10-15
申请号：US16912055
申请日：2020-06-25
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Mitsushi ITANO , Daisuke KARUBE , Yuuki YOTSUMOTO , Kazuhiro TAKAHASHI , Tatsuya TAKAKUWA , Yuzo KOMATSU , Shun OHKUBO , Tetsushi TSUDA , Takeo ABE , Yumi TODA
Abstract: A refrigeration cycle apparatus that can improve operation efficiency when a refrigerant that contains at least 1,2-difluoroethylene is used is provided. An air conditioning apparatus 1 includes a compressor (21), an outdoor heat exchanger (23), an outdoor expansion valve (24), an indoor heat exchanger (31), and a suction injection pipe (40), and uses a refrigerant that contains at least 1,2-difluoroethylene. The suction injection pipe (40) allows a part of a refrigerant that flows toward the indoor heat exchanger (31) from the outdoor heat exchanger (23) to merge with a low-pressure refrigerant that is sucked into the compressor (21).
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公开(公告)号：US20200010389A1
公开(公告)日：2020-01-09
申请号：US16482856
申请日：2018-02-02
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Yuusuke ETOU , Atsushi MARUO , Katsuya NAKAI , Kazuhiro TAKAHASHI
Abstract: According to a method for producing a perfluoroalkadiene compound represented by general formula (1): CF2═CF—(CF2)n-4—CF═CF2 (1), wherein n is an integer of 4 or more, the method comprising a reaction step of adding a nitrogen-containing compound to a solution of a compound represented by general formula (2): X1CF2—CFX2—(CF2)n-4—CF2X1 (2), wherein n is the same as above, X1 is the same or different and is a halogen atom other than fluorine, and X2 is a halogen atom, the perfluoroalkadiene compound can be obtained at a high yield.
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