公开(公告)号：EP3825383A1

公开(公告)日：2021-05-26

申请号：EP19838054.5

申请日：2019-07-16

申请人： DAIKIN INDUSTRIES, LTD.

发明人： KUMAKURA, Eiji ,  FURUSHO, Kazuhiro ,  TANAKA, Masaru ,  OHKUBO, Shun ,  ITANO, Mitsushi ,  YOTSUMOTO, Yuuki ,  MIZUNO, Akihito ,  GOTOU, Tomoyuki ,  YAMADA, Yasufu ,  TSUCHIYA, Tatsumi ,  GOBOU, Kenji ,  KUROKI, Hitomi ,  KARUBE, Daisuke ,  TAKAKUWA, Tatsuya ,  TSUDA, Tetsushi

IPC分类号： C09K5/04 ,  F25B1/00

摘要： 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

公开(公告)号：EP3730870A1

公开(公告)日：2020-10-28

申请号：EP18892942.6

申请日：2018-12-10

申请人： DAIKIN INDUSTRIES, LTD.

发明人： KUMAKURA, Eiji ,  YAMADA, Takuro ,  YOSHIMI, Atsushi ,  IWATA, Ikuhiro ,  ITANO, Mitsushi ,  KARUBE, Daisuke ,  YOTSUMOTO, Yuuki ,  TAKAHASHI, Kazuhiro ,  TAKAKUWA, Tatsuya ,  KOMATSU, Yuzo ,  OHKUBO, Shun

IPC分类号： F25B1/00 ,  C09K5/04

摘要： 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).

公开(公告)号：EP3730869A1

公开(公告)日：2020-10-28

申请号：EP18892525.9

申请日：2018-12-10

申请人： DAIKIN INDUSTRIES, LTD.

发明人： KUMAKURA, Eiji ,  YAMADA, Takuro ,  YOSHIMI, Atsushi ,  IWATA, Ikuhiro ,  ITANO, Mitsushi ,  KARUBE, Daisuke ,  YOTSUMOTO, Yuuki ,  TAKAHASHI, Kazuhiro ,  KOMATSU, Yuzo ,  OHKUBO, Shun ,  TAKAKUWA, Tatsuya

IPC分类号： F25B1/00 ,  C09K5/04

摘要： 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.

公开(公告)号：EP3604981A1

公开(公告)日：2020-02-05

申请号：EP18777046.6

申请日：2018-03-23

申请人： Daikin Industries, Ltd.

发明人： KUMAKURA, Eiji ,  OKAMOTO, Tetsuya

IPC分类号： F25B49/02 ,  F24F11/33 ,  F24F11/36 ,  F24F11/49 ,  F24F11/84 ,  F25B1/00 ,  F25B41/04

摘要： An air conditioner (1, 101) has a refrigerant circuit (10, 110) which is formed by connecting an outdoor unit (2, 102) and an indoor unit (3). The refrigerant circuit (10, 110) has a refrigerant sealed therein. The refrigerant contains a hydrofluorocarbon having a property of undergoing a disproportionation reaction. The refrigerant circuit (10, 110) includes a refrigerant shutoff mechanism (24, 41, 43, 46, 47, 48) that shuts off a flow of the refrigerant from the outdoor unit (2, 102) side to the indoor unit (3) side when the refrigerant in a portion of the refrigerant circuit (10, 110) within the outdoor unit (2, 102) meets a predetermined condition.

公开(公告)号：EP2090745B1

公开(公告)日：2018-09-05

申请号：EP07832303.7

申请日：2007-11-21

申请人： Daikin Industries, Ltd.

发明人： KUMAKURA, Eiji ,  SAKITANI, Katsumi

IPC分类号： F01C19/08 ,  F01C13/04 ,  F04C23/02 ,  F04C18/32

CPC分类号： F04C23/008 ,  F01C1/322 ,  F01C11/004 ,  F01C13/04 ,  F01C21/06 ,  F04C18/322 ,  F04C23/02

摘要： A casing (31) contains a compression mechanism (50) for compressing refrigerant, an expansion mechanism (60) for expanding refrigerant, and a rotary shaft (40) connecting the compression mechanism (50) and the expansion mechanism (60). A heat insulator (90) is provided which partitions the internal space of the casing (31) into a first space (48) in which the expansion mechanism (60) is placed and a second space (49) in which the compression mechanism (50) is placed. The heat insulator (90) is passed through by the rotary shaft (40). An elastically deformable O-ring (92) seals a clearance between the outer periphery of the heat insulator (90) and the inner periphery of the casing (31).

公开(公告)号：EP1795701B1

公开(公告)日：2018-04-25

申请号：EP05788286.2

申请日：2005-09-30

申请人： DAIKIN INDUSTRIES, LTD.

发明人： KUMAKURA, Eiji ,  OKAMOTO, Masakazu ,  OKAMOTO, Tetsuya

IPC分类号： F01C21/04 ,  F01C13/04 ,  F04C27/00 ,  F04C29/00 ,  F04C23/00 ,  F01D1/06 ,  H02K9/193 ,  H02K7/00 ,  H02K1/32 ,  F04C29/02 ,  F04C18/356 ,  F01D15/08 ,  F01D15/00 ,  F01D5/02 ,  F01C1/356

CPC分类号： H02K9/193 ,  F01C1/356 ,  F01D5/026 ,  F01D15/005 ,  F01D15/08 ,  F04C18/3562 ,  F04C23/001 ,  F04C23/003 ,  F04C23/008 ,  F04C27/009 ,  F04C29/023 ,  F04C2240/60 ,  F05D2240/55 ,  H02K1/32 ,  H02K7/003 ,  H02K7/14

摘要： Oil supply grooves (74, 84) are formed respectively in a rotating shaft (70) of a compression mechanism (50) integral with an electric motor (40) and in a rotating shaft (80) of an expansion mechanism (60). The rotating shafts (70, 80) are coupled together by engagement between an engagement convex portion (85) and an engagement concave portion (75) which are formed respectively in shaft ends of the rotating shafts (70, 80). And, a seal groove (S) is formed in the peripheral surface of the engagement convex portion (85) and an O-ring (R) is engaged into the seal groove (S). Hereby, lubrication oil leakage from between the engagement convex portion (85) and the engagement concave portion (75) is prevented.

公开(公告)号：EP2123996B1

公开(公告)日：2018-01-10

申请号：EP08710313.1

申请日：2008-02-06

申请人： Daikin Industries, Ltd.

发明人： SAKITANI, Katsumi ,  OKAMOTO, Masakazu ,  KUMAKURA, Eiji

IPC分类号： F25B11/02 ,  F25B1/00 ,  F25B43/00

CPC分类号： F25B13/00 ,  F04C18/352 ,  F04C23/003 ,  F04C29/028 ,  F25B1/04 ,  F25B9/06 ,  F25B31/004 ,  F25B2309/061 ,  F25B2313/02742

摘要： A refrigerant circuit (11) in an air conditioner (10) includes a compressor (20) and an expander (30). In the compressor (20), refrigerant compressed by a compression mechanism (21) is discharged into the internal space of a compressor casing (24). In the compressor (20), refrigeration oil which has accumulated in the bottom of the compressor casing (24) is supplied to the compression mechanism (21). The refrigeration oil in the bottom of the compressor casing (24) is directly introduced into an expansion mechanism (31) of the expander (30) through an oil supply pipe (41).

公开(公告)号：EP2048456B1

公开(公告)日：2017-08-30

申请号：EP07790874.7

申请日：2007-07-17

申请人： Daikin Industries, Ltd.

发明人： ISHIKAWA, Satoshi ,  HORI, Kazutaka ,  KUMAKURA, Eiji ,  SAKITANI, Katsumi

IPC分类号： F25B9/00 ,  F25B41/00 ,  F25B49/02

CPC分类号： F25B41/00 ,  F25B9/008 ,  F25B49/02 ,  F25B2309/061 ,  F25B2500/12 ,  F25B2500/13

公开(公告)号：EP2098730B1

公开(公告)日：2015-03-04

申请号：EP07832306.0

申请日：2007-11-21

申请人： Daikin Industries, Ltd.

发明人： KUMAKURA, Eiji ,  SAKITANI, Katsumi

IPC分类号： F04C23/02 ,  F01C13/04 ,  F01C21/06 ,  F04C29/04 ,  F25B11/02

CPC分类号： F04C11/003 ,  F01C1/322 ,  F01C21/108 ,  F04C23/008 ,  F04C2230/60

公开(公告)号：EP2012075B1

公开(公告)日：2014-11-26

申请号：EP07741717.8

申请日：2007-04-16

申请人： Daikin Industries, Ltd.

发明人： SAKITANI, Katsumi ,  OKAMOTO, Tetsuya ,  OKAMOTO, Masakazu ,  KUMAKURA, Eiji

IPC分类号： F25B1/04 ,  F25B9/06 ,  F25B31/00 ,  F25B9/00 ,  F25B13/00

CPC分类号： F25B31/004 ,  F25B1/04 ,  F25B9/008 ,  F25B9/06 ,  F25B13/00 ,  F25B2309/061 ,  F25B2313/02742 ,  F25B2400/14 ,  F25B2700/03