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1. 发明公开

EP3978831A1 AIR CONDITIONER 有权转让
公开(公告)号：EP3978831A1
公开(公告)日：2022-04-06
申请号：EP20822547.4
申请日：2020-06-10
申请人： Daikin Industries, Ltd.
发明人： YAMADA, Takuro , KUMAKURA, Eiji , YOSHIMI, Atsushi , WATA, Ikuhiro , MINAMIDA, Tomoatsu
IPC分类号： F25B7/00 , F25B41/00 , F25B1/00
摘要： A refrigerant cycle system (100) includes a primary-side cycle (20) that circulates a first refrigerant, a secondary-side cycle (40) that the second refrigerant, and a cascade heat exchanger (35) that exchanges heat between the first refrigerant and the second refrigerant. The primary-side cycle (20) includes a primary-side connection pipe. The secondary-side cycle (40) includes a secondary-side connection pipe. The primary-side connection pipe includes a primary-side gas connection pipe (22) and a primary-side liquid connection pipe (21). The secondary-side connection pipe includes a secondary-side gas connection pipe (42) and a secondary-side liquid connection pipe (41). The pipe diameter of the secondary-side gas connection pipe (42) is smaller than the pipe diameter of the primary-side gas connection pipe (22), or the pipe diameter of the secondary-side liquid connection pipe (41) is smaller than the pipe diameter of the primary-side liquid connection pipe (21).

2. 发明公开

EP3730870A1 REFRIGERATION CYCLE DEVICE 审中-实审转让
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).

3. 发明公开

EP3730869A1 AIR CONDITIONING UNIT 审中-公开
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.

4. 发明授权

EP2261581B1 REFRIGERATION DEVICE 有权
公开(公告)号：EP2261581B1
公开(公告)日：2018-08-22
申请号：EP09715946.1
申请日：2009-02-25
申请人： Daikin Industries, Ltd.
发明人： FUJIMOTO, Shuji , YOSHIMI, Atsushi
IPC分类号： F25B1/10 , F25B1/00 , F25B13/00
CPC分类号： F25B1/10 , F25B1/00 , F25B13/00 , F25B2309/061 , F25B2313/0272 , F25B2313/02741 , F25B2400/04 , F25B2400/072 , F25B2400/075 , F25B2400/13
摘要： An air-conditioning apparatus (1) is provided with a two-stage-compression-type compression mechanism (2), a heat source-side heat exchanger (4), a usage-side heat exchanger (6), an intercooler (7), an intercooler bypass tube (9), and an intake return tube (92). The intercooler (7) is provided to an intermediate refrigerant tube (8) for drawing refrigerant discharged from the first-stage compression element (2c) into the second-stage compression element (2d), and the intercooler functions as a cooler of the refrigerant discharged from the first-stage compression element (2c) and drawn into the second-stage compression element (2d). The intercooler bypass tube (9) is connected to the intermediate refrigerant tube (8) so as to bypass the intercooler (7). The intake return tube (92) is a refrigerant tube for connecting the intercooler (7) and the intake side of the compression mechanism (2).

5. 发明公开

EP2309207A1 REFRIGERATION DEVICE 有权
标题翻译：制冷设备
公开(公告)号：EP2309207A1
公开(公告)日：2011-04-13
申请号：EP09742705.8
申请日：2009-04-30
申请人： Daikin Industries, Ltd.
发明人： FUJIMOTO, Shuji , YOSHIMI, Atsushi
IPC分类号： F25B1/00 , F25B1/10 , F25B43/00
CPC分类号： F25B1/10 , F25B13/00 , F25B45/00 , F25B2313/0272 , F25B2313/02741 , F25B2400/04 , F25B2400/072 , F25B2400/23
摘要： An air-conditioning apparatus (1) includes a two-stage compression-type compression mechanism (2), a heat source-side heat exchanger (4), an expansion mechanism (5), a usage-side heat exchanger (6), a switching mechanism (3), a first second-stage injection tube (18c), an intermediate heat exchanger (7), an intermediate heat exchanger bypass tube (9), and a liquid injection tube (18h). According to the air-conditioning apparatus (1), injection rate optimization control is performed for controlling the flow rate of the refrigerant returned to a second-stage compression element (2d) through the liquid injection tube (18h) so that an injection ratio, which is the ratio of the flow rate of the refrigerant returned to the second-stage compression element (2d) through the first second-stage injection tube (18c) and the liquid injection tube (18h) relative to the flow rate of the refrigerant discharged from the compression mechanism (2), is greater during the heating operation than during the cooling operation.
摘要翻译：（2），热源侧热交换器（4），膨胀机构（5），利用侧热交换器（6），空气调节机构切换机构3，第一后级侧喷射管18c，中间热交换器7，中间热交换器旁通管9以及液体注入管18h。在空调装置1中，为了控制经由液体注入管18h返回到后级侧的压缩部件2d的制冷剂的流量，进行喷射比率优化控制，即经由第一后级侧喷射管18c返回到后级侧压缩部件2d的制冷剂的流量与液体喷射管18h相对于排出的制冷剂的流量的比例来自压缩机构（2）的热量在制热操作期间比在制冷操作期间大。

6. 发明公开

EP2295898A1 REFRIGERATION DEVICE 审中-公开
标题翻译：制冷设备
公开(公告)号：EP2295898A1
公开(公告)日：2011-03-16
申请号：EP09733696.0
申请日：2009-04-20
申请人： Daikin Industries, Ltd.
发明人： YOSHIMI, Atsushi , FUJIMOTO, Shuji
IPC分类号： F25B47/02 , F25B1/00 , F25B1/10
CPC分类号： F25B13/00 , F25B1/10 , F25B9/008 , F25B47/025 , F25B2309/061 , F25B2313/0272 , F25B2313/02741 , F25B2400/13 , F25B2400/23
摘要： An air-conditioning apparatus (1) uses carbon dioxide as a refrigerant, and has a two-stage compression-type compression mechanism (2), a heat source-side heat exchanger (4), an expansion mechanism (5), a usage-side heat exchanger (6), a switching mechanism (3), and a first second-stage injection tube (18c). In the air-conditioning apparatus (1), refrigerant is prevented from returning to a second-stage compression element (2d) through the first second-stage injection tube (18c), at least during the beginning of a reverse cycle defrosting operation for defrosting the heat source-side heat exchanger (4) by switching the switching mechanism (3) to a cooling operation state.
摘要翻译：空调装置（1）使用二氧化碳作为制冷剂，具有二级压缩式的压缩机构（2），热源侧热交换器（4），膨胀机构（5），用途侧热交换器6，切换机构3以及第一后级侧喷射管18c。在空气调节装置（1）中，至少在开始进行除霜的逆循环除霜运转时，防止制冷剂通过第一后级侧喷射管（18c）返回到后级侧的压缩元件（2d）将切换机构（3）切换到制冷运转状态，由此使热源侧热交换器（4）冷却。

7. 发明公开

EP2251622A1 REFRIGERATION DEVICE 有权
标题翻译：制冷设备
公开(公告)号：EP2251622A1
公开(公告)日：2010-11-17
申请号：EP09705691.5
申请日：2009-01-27
申请人： Daikin Industries, Ltd.
发明人： FUJIMOTO, Shuji , YOSHIMI, Atsushi
IPC分类号： F25B1/10 , F25B1/00
CPC分类号： F25B1/10 , F25B9/008 , F25B13/00 , F25B2309/061 , F25B2313/0272 , F25B2313/02741 , F25B2400/04 , F25B2400/072 , F25B2400/075 , F25B2400/13 , F25B2400/23 , F25B2500/28 , F25B2700/21
摘要： In a refrigeration apparatus that carries out a multistage compression refrigeration cycle, it is possible to prevent refrigerant drawn into a second-stage compression element from becoming wet, even under operation conditions in which the temperature of a heat source of the intercooler is low. An air-conditioning apparatus (1) has a two-stage compression mechanism (2); a heat source-side heat exchanger (4); a usage-side heat exchanger (6); an intercooler (7) which is provided to an intermediate refrigerant tube (8) for drawing refrigerant discharged from a first-stage compression element (2c) into a second-stage compression element (2d); and an intercooler bypass tube (9) connected to the intermediate refrigerant tube (8) so as to bypass the intercooler (7). In the air-conditioning apparatus (1), a wet prevention control is performed using the intercooler bypass tube (9) so that refrigerant does not flow to the intercooler (7) when the heat source temperature of the intercooler (7) or the outlet refrigerant temperature of the intercooler (7) is equal to or less than the saturation temperature of the refrigerant fed from the first-stage compression element (2c) to the second-stage compression element (2d).
摘要翻译：在进行多级压缩式制冷循环的制冷装置中，即使在中间冷却器的热源温度较低的运转条件下，也能够防止吸入后级侧压缩部件的制冷剂变湿。空调装置（1）具有两级压缩机构（2）。热源侧热交换器（4）; 利用侧热交换器6; 中间冷却器（7），其设置于中间制冷剂管（8），用于将从前级侧压缩部件（2c）排出的制冷剂吸入后级侧压缩部件（2d）; 以及连接到中间制冷剂管（8）以绕过中间冷却器（7）的中间冷却器旁通管（9）。在空调装置（1）中，在中间冷却器（7）的热源温度或出口（7）的温度下，利用中间冷却器旁通管（9）进行防湿控制，以使制冷剂不流向中间冷却器中间冷却器7的制冷剂温度成为从前级侧压缩部件2c向后级侧压缩部件2d供给的制冷剂的饱和温度以下。

8. 发明公开

EP2230475A1 REFRIGERATION DEVICE 有权
标题翻译：制冷设备
公开(公告)号：EP2230475A1
公开(公告)日：2010-09-22
申请号：EP08855423.3
申请日：2008-11-26
申请人： Daikin Industries, Ltd.
发明人： YOSHIMI, Atsushi , FUJIMOTO, Shuji
IPC分类号： F25B47/02 , F25B1/00 , F25B1/10
CPC分类号： F25B9/008 , F25B1/10 , F25B13/00 , F25B47/022 , F25B2309/061 , F25B2313/02741 , F25B2400/04 , F25B2400/072 , F25B2400/075 , F25B2400/13 , F25B2400/23
摘要： An air-conditioning apparatus (1) uses carbon dioxide as a refrigerant, and has a two-stage compression-type compression mechanism (2), a heat source-side heat exchanger (4), an expansion mechanism (5), a usage-side heat exchanger (6), a switching mechanism (3), an intercooler (7) which functions as a cooler of refrigerant discharged from a first-stage compression element and drawn into a second-stage compression element, and an intercooler bypass tube (9). When the air-conditioning apparatus (1) performs a defrosting operation for defrosting the heat source-side heat exchanger (4), refrigerant flows to the heat source-side heat exchanger (4) and the intercooler (7), and after defrosting of the intercooler (7) is detected as being complete, the intercooler bypass tube (9) is used so as to ensure that the refrigerant does not flow to the intercooler (7).
摘要翻译：空调装置（1）使用二氧化碳作为制冷剂，具有二级压缩式的压缩机构（2），热源侧热交换器（4），膨胀机构（5），用途（6），切换机构（3），作为从第一级压缩元件排出的制冷剂的冷却器发挥功能的中间冷却器（7），被吸入后级侧的压缩元件，中间冷却器旁通管（9）。当空气调节装置1进行除霜热源侧热交换器4的除霜运转时，制冷剂流向热源侧热交换器4和中间冷却器7，检测到中间冷却器（7）完成时，使用中间冷却器旁通管（9）以确保制冷剂不流向中间冷却器（7）。

9. 发明公开

EP2230472A1 FREEZING APPARATUS 有权
标题翻译：冷冻设备
公开(公告)号：EP2230472A1
公开(公告)日：2010-09-22
申请号：EP08854570.2
申请日：2008-11-28
申请人： Daikin Industries, Ltd.
发明人： FUJIMOTO, Shuji , YOSHIMI, Atsushi , UENO, Yoshio , FUJIYOSHI, Ryusuke , KURIHARA, Toshiyuki , YOSHIOKA, Shun
IPC分类号： F25B1/10 , F25B1/00
CPC分类号： F25B9/008 , F25B1/10 , F25B13/00 , F25B31/004 , F25B39/00 , F25B2309/061 , F25B2313/02741 , F25B2400/075 , F25B2400/13 , F25B2400/23 , F25B2600/17
摘要： An air-conditioning apparatus (1) uses carbon dioxide as a refrigerant, and comprises a two-stage-compression-type compression mechanism (2), a heat source-side heat exchanger (4), an expansion mechanism (5), a usage-side heat exchanger (6), and an intercooler (7) which is provided to an intermediate refrigerant tube (8) for drawing the refrigerant discharged from a first-stage compression element (2c) into a second-stage compression element (2d), and which functions as a cooler of the refrigerant discharged from the first-stage compression element and drawn into the second-stage compression element. The intercooler (7) constitutes a heat exchanger integrated with the heat source-side heat exchanger (4), and the intercooler is disposed in the upper part of the heat exchanger.
摘要翻译：（2），热源侧热交换器（4），膨胀机构（5），空气调节机构利用侧热交换器6以及中间冷却器7，该中间冷却器7设置在中间制冷剂管8上，用于将从前级侧压缩部件2c排出的制冷剂吸入后级侧压缩部件2d ），其作为从前级侧压缩部件排出的制冷剂的冷却器而被吸入后级侧压缩部件。中间冷却器（7）构成与热源侧热交换器（4）一体化的热交换器，中间冷却器配置在热交换器的上部。

10. 发明公开

EP2068096A1 REFRIGERATION DEVICE 有权转让
标题翻译： KÜHLVORRICHTUNG
公开(公告)号：EP2068096A1
公开(公告)日：2009-06-10
申请号：EP07806911.9
申请日：2007-09-07
申请人： Daikin Industries, Ltd.
发明人： KASAHARA, Shinichi , KURIHARA, Toshiyuki , FUJIMOTO, Shuuji , YAMAGUCHI, Takahiro , YOSHIMI, Atsushi , UENO, Yoshio
IPC分类号： F25B1/00
CPC分类号： F25B13/00 , F25B9/008 , F25B40/00 , F25B2309/061 , F25B2313/0233 , F25B2313/0272 , F25B2313/02741 , F25B2341/0662 , F25B2400/13 , F25B2400/23 , F25B2600/2509 , F25B2600/2513 , F25B2700/19 , F25B2700/1931 , F25B2700/2102 , F25B2700/21151
摘要： An object of the present invention is to make it possible to impart an adequate degree of subcooling to the refrigerant that has passed through the first expansion mechanism, and to maintain the proper degree of superheating of the refrigerant sucked into the compressor in a refrigerant circuit that is provided with a two-stage expansion mechanism. The refrigeration device (1) of the present invention is provided with a compression mechanism (11), a radiator (14), a first expansion mechanism (16), a second expansion mechanism (20), an evaporator (31), a first internal heat exchanger (15), a branch pipe (4), a third expansion mechanism (19), and a second internal heat exchanger (18). The first internal heat exchanger causes heat to be exchanged between refrigerant that flows from the exit side of the radiator to the inflow side of the first expansion mechanism, and refrigerant that flows from the exit side of the evaporator to the refrigerant inflow side of the compression mechanism. The branch pipe branches from a third refrigerant pipe for connecting the exit side of the radiator and the refrigerant inflow side of the second expansion mechanism, and merges with the second refrigerant pipe. A third expansion mechanism is provided to the branch pipe. The second internal heat exchanger causes heat to be exchanged between refrigerant that flows out from the first expansion mechanism, and refrigerant that flows out from the third expansion mechanism.
摘要翻译：本发明的目的在于，能够使已经通过第一膨胀机构的制冷剂具有足够的过冷度，并且将吸入压缩机的制冷剂的适当过热度保持在制冷剂回路中，设置有两级膨胀机构。本发明的制冷装置（1）具备压缩机构（11），散热器（14），第一膨胀机构（16），第二膨胀机构（20），蒸发器（31）内部热交换器（15），分支管（4），第三膨胀机构（19）和第二内部热交换器（18）。第一内部热交换器在从散热器的出口侧流到第一膨胀机构的流入侧的制冷剂之间进行热交换，从蒸发器的出口侧流向压缩机的制冷剂流入侧的制冷剂机制。分支管从用于连接散热器的出口侧和第二膨胀机构的制冷剂流入侧的第三制冷剂管分支，并与第二制冷剂管合并。向分支管提供第三膨胀机构。第二内部热交换器使得从第一膨胀机构流出的制冷剂与从第三膨胀机构流出的制冷剂之间进行热交换。

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