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公开(公告)号：US11912922B2
公开(公告)日：2024-02-27
申请号：US17260762
申请日：2019-07-16
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Shinichi Fujinaka , Masaru Tanaka , Shun Ohkubo , Mitsushi Itano , Yuuki Yotsumoto , Akihito Mizuno , Tomoyuki Gotou , Yasufu Yamada , Hitomi Kuroki , Tatsumi Tsuchiya , Kenji Gobou , Daisuke Karube , Tatsuya Takakuwa
CPC classification number: C09K5/045 , F25B9/006 , C09K2205/126 , C09K2205/22 , C09K2205/32
Abstract: A showcase includes a refrigerant circuit and a refrigerant enclosed in the refrigerant circuit. The refrigerant circuit includes a compressor (121), a radiator (122), an expansion valve (123), and an evaporator (124). The refrigerant is a low-GWP refrigerant.
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公开(公告)号：US11441802B2
公开(公告)日：2022-09-13
申请号：US16913506
申请日：2020-06-26
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Mitsushi Itano , Daisuke Karube , Yuuki Yotsumoto , Kazuhiro Takahashi , Yuzo Komatsu , Shun Ohkubo , Tatsuya Takakuwa , Tetsushi Tsuda , Yuuichi Yanagi
IPC: F24F11/30 , F24F1/0003 , F24F1/0007 , F25B9/00 , F24F1/30 , F24F13/02 , F24F13/20 , F24F1/0068
Abstract: An air conditioning apparatus 1 includes a compressor (321), an indoor heat exchanger (242) that is a use-side heat exchanger that exchanges heat with first air (F1), an outdoor heat exchanger (323) that is a heat-source-side heat exchanger that exchanges heat with second air, a refrigerant, a first duct (209), and a casing (230). The refrigerant contains at least 1,2-difluoroethylene, and circulates in the compressor (321), the indoor heat exchanger (242), and the outdoor heat exchanger (323) to repeat a refrigeration cycle. The first duct (209) supplies the first air (F1) to a plurality of rooms in an interior. The casing (230) includes a use-side space (SP2) that is connected to the first duct (209) and that accommodates the indoor heat exchanger (242). The casing (230) is configured to allow the first air (F1) after heat exchange with the refrigerant at the indoor heat exchanger (242) to be sent out to the first duct (209).
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公开(公告)号：US10829426B2
公开(公告)日：2020-11-10
申请号：US16535487
申请日：2019-08-08
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Takehiro Chaki , Daisuke Karube
IPC: C07C21/18 , C07C21/04 , C07C21/06 , C07C19/08 , C07C19/10 , C09K3/30 , C09K5/04 , C07C19/04 , C07C21/073
Abstract: The present invention provides a composition comprising an HFO compound, the composition having excellent stability with decomposition and oxidation of the HFO compound being inhibited, the composition having improved refrigerating capacity when used as a heat transfer medium, compared with the case in which an HFO compound is used alone. More specifically, the present invention provides a composition comprising at least one HFO compound selected from the group consisting of HFO-1234yf, (E-/Z-)HFO-1234ze, and (E-/Z-)HFO-1225ye; and a chlorine-containing compound, wherein (1) the chlorine-containing compound is at least one member selected from the group consisting of CH2═CHCl, CHF═CHCl, CH2═CFCl, CF3Cl, CH3Cl, CF3CH2Cl, CClF═CHCl, and CHF═CCl2, and (2) the chlorine-containing compound is contained in an amount ranging from 1 to 500000 mass ppm.
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公开(公告)号：US09902670B2
公开(公告)日：2018-02-27
申请号：US15307956
申请日：2015-05-14
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Daisuke Karube , Shun Ohkubo , Tatsuya Takakuwa
CPC classification number: C07C17/06 , C07B61/00 , C07C17/15 , C07C17/25 , C07C17/383 , C07C19/10 , C07C21/18 , Y02P20/582
Abstract: The present invention provides a method that produces a composition containing 1223xd and/or 1213xa by a gas-phase reaction, and that achieves production efficiency higher than known methods. The present invention provides a method for producing a composition containing at least one fluorine-containing olefin selected from 1,2-dichloro-3,3,3-trifluoropropene (HCFO-1223xd) and 1,1,2-trichloro-3,3,3-trifluoropropene (CFO-1213xa), the method comprising subjecting at least one starting compound selected from a chlorine-containing alkane represented by Formula (1-1): CF3CHXCHX2, wherein each X is independently H or Cl, with the proviso that at least one X represents Cl, and a chlorine-containing alkene represented by Formula (1-2): CF3CX═CX2, wherein each X is independently H or Cl, with the proviso that at least one X represents Cl, to a gas-phase oxychlorination reaction in a temperature range of 380° C. or lower in the presence of oxidative gas and hydrogen chloride gas.
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公开(公告)号：US20150203421A1
公开(公告)日：2015-07-23
申请号：US14408339
申请日：2013-08-07
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Kazuhiro Takahashi , Hitoshi Motoyama , Takehiro Chaki , Daisuke Karube , Masayuki Kishimoto
CPC classification number: C07C17/20 , C07C17/206 , C07C17/25 , Y02P20/582 , C07C21/18
Abstract: The present invention provides a process for producing 2,3,3,3-tetrafluoropropene, comprising the steps of producing 2-chloro-3,3,3-trifluoropropene by reacting anhydrous hydrogen fluoride with a specific chlorine-containing compound in a gas phase in the presence of a fluorination catalyst while heating; and producing 2,3,3,3-tetrafluoropropene by reacting 2-chloro-3,3,3-trifluoropropene with anhydrous hydrogen fluoride in a gas phase in the presence of a fluorination catalyst while heating, the step of producing 2-chloro-3,3,3-trifluoropropene being performed after the step of producing 2,3,3,3-tetrafluoropropene. According to the process, 2,3,3,3-tetrafluoropropene can be produced with reduced energy and equipment costs in an economically advantageous manner.
Abstract translation: 本发明提供一种生产2,3,3,3-四氟丙烯的方法，包括以下步骤：通过无水氟化氢与气相中的特定含氯化合物反应制备2-氯-3,3,3-三氟丙烯 在加热的同时存在氟化催化剂; 在加热的同时，在氟化催化剂的存在下，在气相中使2-氯-3,3,3-三氟丙烯与无水氟化氢反应生成2,3,3,3-四氟丙烯，制备2-氯-3,3,3-三氟丙烯的步骤， 在制备2,3,3,3-四氟丙烯的步骤之后进行3,3,3-三氟丙烯。 根据该方法，可以以经济上有利的方式以降低的能量和设备成本制备2,3,3,3-四氟丙烯。
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Patent Agency Ranking
公开(公告)号：US11920077B2
公开(公告)日：2024-03-05
申请号：US17260775
申请日：2019-07-16
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： 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
IPC: C09K5/04 , B60H1/32 , C10M171/00 , C10N40/30
CPC classification number: C09K5/045 , B60H1/3227 , C10M171/008 , C09K2205/106 , C09K2205/126 , C09K2205/128 , C09K2205/40 , C10M2207/0406 , C10M2207/2835 , C10M2209/1033 , C10N2040/30
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.
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公开(公告)号：US11542216B2
公开(公告)日：2023-01-03
申请号：US17473330
申请日：2021-09-13
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Tatsuya Takakuwa , Osamu Yamamoto , Daisuke Karube
IPC: C07C17/358 , C07C21/18 , C07C17/383
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).
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公开(公告)号：US11441819B2
公开(公告)日：2022-09-13
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：US11435118B2
公开(公告)日：2022-09-06
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：US10590051B2
公开(公告)日：2020-03-17
申请号：US15576430
申请日：2016-05-18
Applicant: DAIKIN INDUSTRIES, LTD.
Inventor： Takehiro Chaki , Shun Ohkubo , Daisuke Karube
Abstract: The present invention provides a method for producing a target fluorine-containing olefin with high conversion and selectivity using a process comprising a dehydrofluorination reaction of a hydrofluorocarbon. The method comprises a first reaction step comprising subjecting a hydrofluorocarbon to dehydrofluorination in the presence of a catalyst. The hydrofluorocarbon is a compound represented by Formula (1): RfCFYCHZ2, wherein Rf represents a straight or branched C1-3 perfluoroalkyl group, and Y and Z each independently represent H or F wherein when all Zs are H, Y represents F. The catalyst comprises chromium oxide represented by the chemical formula: CrOm (1.5
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