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

IPC: F25B1/00 ,  F25B43/00 ,  C09K5/04

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).

公开(公告)号：US20180370877A1

公开(公告)日：2018-12-27

申请号：US16066872

申请日：2016-12-19

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tatsuya TAKAKUWA ,  Kazuhiro TAKAHASHI ,  Daisuke KARUBE ,  Takehiro CHAKI ,  Masayuki KISHIMOTO ,  Yuzo KOMATSU

IPC: C07C17/087 ,  C07C17/383

Abstract: This invention provides a method for stably producing 2,3,3,3-tetrafluoropropene for a long period of time while suppressing catalyst deactivation. This invention provides a method for producing 2,3,3,3-tetrafluoropropene, the method comprising: (d) reacting 2-chloro-3,3,3-trifluoropropene with hydrogen fluoride in the presence of a catalyst; (e) subjecting the reaction mixture obtained in step (d) to distillation to separate the mixture into a first stream comprising 2,3,3,3-tetrafluoropropene as a main component and a second stream comprising unreacted hydrogen fluoride and organic matter containing unreacted 2-chloro-3,3,3-trifluoropropene as main components; and (f) recycling the second stream separated in step (e) above to the reaction of step (d), wherein the distillation of step (e) is performed under conditions that satisfy the relationship of a specific equation.

公开(公告)号：US20170217859A1

公开(公告)日：2017-08-03

申请号：US15324827

申请日：2015-06-16

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tatsuya TAKAKUWA ,  Kazuhiro TAKAHASHI ,  Daisuke KARUBE ,  Takehiro CHAKI ,  Masayuki KISHIMOTO ,  Yuzo KOMATSU

IPC: C07C17/25 ,  B01D3/14 ,  C01B7/19 ,  B01J23/26 ,  C07C17/20 ,  C07C17/383

CPC classification number: C07C17/25 ,  B01D3/009 ,  B01D3/143 ,  B01J23/26 ,  C01B7/195 ,  C01B7/196 ,  C07C17/206 ,  C07C17/383 ,  Y02P20/582 ,  C07C21/18

Abstract: This invention provides a method for stably producing 2,3,3,3-tetrafluoropropene for a long period of time wherein unreacted materials are reused after distillation without liquid-liquid separation to suppress catalyst deactivation. The method for producing 2,3,3,3-tetrafluoropropene comprises the step of reacting 1233xf or like chloropropene with hydrogen fluoride in the presence of a catalyst, the step of subjecting the reaction mixture obtained in the above step to distillation to separate the mixture into a first stream comprising 2,3,3,3-tetrafluoropropene as a main component and a second stream comprising unreacted hydrogen fluoride and organic matter containing unreacted chloropropene as main components, and the step of recycling the second stream to the above reaction, the distillation being performed under conditions in which the unreacted hydrogen fluoride and the organic matter containing the unreacted chloropropene do not undergo liquid-liquid separation at a portion of a distillation column from which the second stream is withdrawn.

公开(公告)号：US20170166521A1

公开(公告)日：2017-06-15

申请号：US15372974

申请日：2016-12-08

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Keiichirou WATANABE ,  Hideki NAKAYA ,  Motohisa SHINO ,  Tatsuya TAKAKUWA ,  Kazunori MORIMOTO

IPC: C07C407/00

CPC classification number: C07C407/00 ,  C08G65/007 ,  C08G2650/48

Abstract: The present invention provides a process for producing a perfluoropolyoxyalkylene peroxide compound comprising a step of reacting a perfluoroalkene with oxygen, wherein the reaction of the perfluoroalkene with oxygen is performed under ultraviolet irradiation and in the presence of a fluorine source.

公开(公告)号：US20160304419A1

公开(公告)日：2016-10-20

申请号：US15190567

申请日：2016-06-23

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takehiro CHAKI ,  Kazuhiro TAKAHASHI ,  Tatsuya TAKAKUWA

IPC: C07C17/087 ,  C07C17/20 ,  C07C17/383

CPC classification number: C07C17/087 ,  C07C17/202 ,  C07C17/206 ,  C07C17/25 ,  C07C17/383 ,  Y02P20/582 ,  C07C21/18 ,  C07C19/10

Abstract: This invention provides a method for producing 2,3,3,3-tetrafluoropropene or 2-chloro-1,1,1,2-tetrafluoropropane, which is a precursor of 2,3,3,3-tetrafluoropropene, in two or three reaction steps, using at least one chlorine-containing compound selected from the group consisting of 1,1,1,2,3-pentachloropropane, 2,3-dichloro-1,1,1-trifluoropropane, and 1,1,2,3-tetrachloropropene as a starting material, the reaction products of at least two of the steps being supplied to the same distillation apparatus to subject the products to a separation operation simultaneously. With this method, 2,3,3,3-tetrafluoropropene or 2-chloro-1,1,1,2-tetrafluoropropane, which is a precursor of 2,3,3,3-tetrafluoropropene, can be efficiently produced with reduced energy and equipment costs in an economically advantageous manner.

公开(公告)号：US20230331647A1

公开(公告)日：2023-10-19

申请号：US18212281

申请日：2023-06-21

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yuuko OHHIGASHI ,  Tatsuya TAKAKUWA ,  Kazuhiro TAKAHASHI

IPC: C07C17/383 ,  C07C19/08 ,  C09K5/04

CPC classification number: C07C17/383 ,  C07C19/08 ,  C09K5/04

Abstract: An object of the present invention is to provide a method that can efficiently remove water contained in pentafluoropropane. Provided as a solution is a method comprising distilling a composition comprising pentafluoropropane and water to thereby extract pentafluoropropane with a water content higher than that of the composition as a first stream, and pentafluoropropane with a water content lower than that of the composition as a second stream.

公开(公告)号：US20220389299A1

公开(公告)日：2022-12-08

申请号：US17358406

申请日：2021-06-25

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Mitsushi ITANO ,  Daisuke KARUBE ,  Yuuki YOTSUMOTO ,  Kazuhiro TAKAHASHI ,  Yuzo KOMATSU ,  Shun OHKUBO ,  Tatsuya TAKAKUWA ,  Tetsushi TSUDA ,  Takeo ABE ,  Yumi TODA

IPC: C09K5/04 ,  C10M171/00

Abstract: There is provided a refrigeration cycle apparatus in which good lubricity can be achieved when a refrigeration cycle is performed using a refrigerant having a sufficiently low GWP. The refrigeration cycle apparatus contains a refrigerating oil and a refrigerant composition containing a refrigerant containing trans-1,2-difluoroethylene (HFO-1132(E)), trifluoroethylene (HFO-1123), and 2,3,3,3-tetrafluoro-1-propene (R1234yf).

公开(公告)号：US20220380648A1

公开(公告)日：2022-12-01

申请号：US17260870

申请日：2019-07-16

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Eiji KUMAKURA ,  Takuro YAMADA ,  Atsushi YOSHIMI ,  Ikuhiro IWATA ,  Yoshinari ASANO ,  Keisuke OHTSUKA ,  Keiji AOTA ,  Mitsushi ITANO ,  Shun OHKUBO ,  Tatsuya TAKAKUWA ,  Daisuke KARUBE ,  Yuuki YOTSUMOTO ,  Kenji GOBOU ,  Hitomi KUROKI ,  Tomoyuki GOTOU ,  Akihito MIZUNO ,  Yasufu YAMADA ,  Tatsumi TSUCHIYA ,  Yuuichi YANAGI ,  Yoshikazu NAKAO ,  Takeo ABE ,  Yumi TODA ,  Tetsushi TSUDA

IPC: C09K5/04 ,  F25B13/00

Abstract: A refrigeration cycle apparatus (1) is capable of performing a refrigeration cycle using a small-GWP refrigerant. The refrigeration cycle apparatus (1) includes a refrigerant circuit (10) and a refrigerant enclosed in the refrigerant circuit (10). The refrigerant circuit includes a compressor (21), a condenser (23), a decompressing section (24), and an evaporator (31). The refrigerant contains is a small-GWP refrigerant.

公开(公告)号：US20220237524A1

公开(公告)日：2022-07-28

申请号：US17610085

申请日：2020-05-12

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Rumi KAWABE ,  Tatsuya TAKAKUWA ,  Haruhisa MASUDA ,  Kei KURAMOTO

IPC: G06N20/20 ,  G16C20/70

Abstract: A learning model generation method may include obtaining, by a processor, as teacher data, information including at least first base material information regarding a first base material, first treatment agent information regarding a first surface-treating agent, and a first evaluation of a first article; learning, by the processor, based on the teacher data; and generating, by the processor, a learning model based on the learning. A second article may be obtained by fixing a second surface-treating agent onto a second base material. The learning model may be configured to receive input information, which is different from the teacher data, as an input, and output a second evaluation of the second article. The input information may include at least second base material information regarding the second base material, and second treatment agent information regarding the second surface-treating agent.

公开(公告)号：US20210309902A1

公开(公告)日：2021-10-07

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

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.