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1. 发明公开

EP4040083A1 FREEZING APPARATUS 有权转让
公开(公告)号：EP4040083A1
公开(公告)日：2022-08-10
申请号：EP20873117.4
申请日：2020-09-29
申请人： Daikin Industries, Ltd.
发明人： IWATA, Ikuhiro , KUMAKURA, Eiji , YAMADA, Takuro , KAJI, Ryuhei , HIROKAWA, Tomoki
IPC分类号： F25B39/00 , F25B49/02 , F25B1/00 , F24F1/0059
摘要： The volume ratio of an outdoor heat exchanger and an indoor heat exchanger is set to a volume ratio suitable for a HFO-based refrigerant to suppress excess and insufficiency of the refrigerant. The refrigerant is a HFO refrigerant or a refrigerant mixture that includes a HFO refrigerant. When both of the indoor heat exchanger (41) and the outdoor heat exchanger (23) are cross-fin-type heat exchangers or stack-type heat exchangers, and the outdoor heat exchanger (23) has a one-row configuration, a volume ratio S [%] of the outdoor heat exchanger (23) to the indoor heat exchanger (41) satisfies a relational expression of 100 ≤ S ≤ 1.0112 E − 03 × ρ ∧ 2 − 1.5836 E + 00 × ρ + 8.2472 E + 02 where ρ [kg/m^3]: an average density of a saturated liquid gas at a condensation temperature of 45°C.

2. 发明公开

EP3816544A1 REFRIGERATION CYCLE DEVICE 审中-实审转让
公开(公告)号：EP3816544A1
公开(公告)日：2021-05-05
申请号：EP19825963.2
申请日：2019-06-25
申请人： Daikin Industries, Ltd.
发明人： YAMADA, Takuro , KUMARKURA, Eiji , IWATA, Ikuhiro
IPC分类号： F25B41/00 , F24F1/32 , F25B1/00
摘要： A refrigeration cycle apparatus (1) includes a heat-source unit (2) and a utilization unit (4a, 4b) that are connected to each other via a gas-refrigerant connection pipe (5) and a liquid-refrigerant connection pipe (6) and thereby constitute a refrigerant circuit (7). Carbon dioxide is enclosed as a refrigerant in the refrigerant circuit (7). In the refrigeration cycle apparatus (1), to reduce the amount of the refrigerant enclosed in the refrigerant circuit (7), a pipe whose inner diameter is 6.2 mm or less is used as the gas-refrigerant connection pipe (5), and/or a pipe whose inner diameter is 3.6 mm or less is used as the liquid-refrigerant connection pipe (6).

3. 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).

4. 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.

5. 发明公开

EP2806234A1 REFRIGERATION DEVICE 有权
标题翻译：制冷设备
公开(公告)号：EP2806234A1
公开(公告)日：2014-11-26
申请号：EP12863638.8
申请日：2012-12-26
申请人： Daikin Industries, Ltd.
发明人： OKAMOTO, Tetsuya , FURUSHO, Kazuhiro , IWATA, Ikuhiro , YANG, Guozhong
IPC分类号： F25B1/10
CPC分类号： F25B43/02 , F25B1/10 , F25B9/008 , F25B13/00 , F25B29/003 , F25B31/004 , F25B2309/061 , F25B2313/0233 , F25B2313/02533 , F25B2313/02541 , F25B2313/02743 , F25B2400/072
摘要： An air-conditioning apparatus (1) comprises a four-stage compressor (2), switching mechanisms (31 to 33), intercoolers (51 to 53), oil separators (41 to 43), and a control unit. The four-stage compressor (2) has four compression mechanisms (21 to 24) connected in series. The switching mechanisms (31 to 33) are connected to blow-out pipes (101b to 103b) of the compression mechanisms (21 to 23). The switching mechanisms (31 to 33) switch between a cooling operation cycle and a heating operation cycle. The intercoolers (51 to 53) cool a refrigerant blown out from the compression mechanisms (21 to 23) during the cooling operation cycle. The oil separators (41 to 43) are placed between the switching mechanisms (31 to 33) and the intercoolers (51 to 53). The oil separators (41 to 43) separate a lubricating oil from the refrigerant blown out from the compression mechanisms (21 to 23) during the cooling operation cycle. A control unit controls the four-stage compressor (2) and the switching mechanisms (31 to 33).
摘要翻译：空调装置1由四级压缩机2，切换机构31〜33，中间冷却器51〜53，油分离器41〜43以及控制部构成。四级压缩机（2）具有串联连接的四个压缩机构（21〜24）。切换机构（31〜33）与压缩机构（21〜23）的吹出管（101b〜103b）连接。切换机构（31〜33）在制冷运转循环和制热运转循环之间进行切换。在制冷运转周期中，中间冷却器（51〜53）对从压缩机构（21〜23）吹出的制冷剂进行冷却。油分离器（41〜43）配置在切换机构（31〜33）与中间冷却器（51〜53）之间。在制冷运转循环中，油分离器（41〜43）将润滑油从压缩机构（21〜23）吹出的制冷剂分离。控制单元控制四级压缩机（2）和切换机构（31至33）。

6. 发明公开

EP2357427A1 REFRIGERATION DEVICE 审中-公开
标题翻译：制冷设备
公开(公告)号：EP2357427A1
公开(公告)日：2011-08-17
申请号：EP09830197.1
申请日：2009-12-02
申请人： Daikin Industries, Ltd.
发明人： FURUI, Shuji , FURUSHO, Kazuhiro , MORIWAKI, Michio , IWATA, Ikuhiro
IPC分类号： F25B1/10 , F25B1/00 , F25B13/00
CPC分类号： F25B13/00 , F25B1/04 , F25B1/10 , F25B2313/0272 , F25B2313/02741 , F25B2400/075 , F25B2400/13 , F25B2400/23
摘要： In a refrigerant circuit (5) of an air conditioner (1), a single-stage compression refrigeration cycle is performed. In the refrigerant circuit (5), a second heat exchanger (40) is provided downstream a first heat exchanger (30). In the first heat exchanger (30), high-pressure refrigerant of a high-pressure flow path (31) is cooled by exchanging heat with first intermediate-pressure refrigerant of an intermediate-pressure flow path (32). First intermediate-pressure gas refrigerant generated in the first heat exchanger (30) is supplied to a first compression mechanism (71). Second intermediate-pressure refrigerant having a pressure lower than that of the first intermediate-pressure refrigerant is supplied to an intermediate-pressure flow path (42) of the second heat exchanger (40). In the second heat exchanger (40), high-pressure refrigerant of a high-pressure flow path (41) is further cooled by exchanging heat with the second intermediate-pressure refrigerant of the intermediate-pressure flow path (42). Second intermediate-pressure gas refrigerant generated in the second heat exchanger (40) is supplied to a second compression mechanism (72).
摘要翻译：在空调机（1）的制冷剂回路（5）中，进行单级压缩式制冷循环。在制冷剂回路5中，在第一热交换器30的下游侧设有第二热交换器40。在第一热交换器30中，高压流路31的高压制冷剂通过与中压流路32的第一中压制冷剂进行热交换而被冷却。在第一热交换器30中产生的第一中压气态制冷剂被供给至第一压缩机构71。将压力比第一中压制冷剂低的第二中压制冷剂供给到第二热交换器40的中压流路42。在第二热交换器40中，高压流路41的高压制冷剂通过与中压流路42的第二中压制冷剂进行热交换而被进一步冷却。在第二热交换器（40）中产生的第二中压气态制冷剂被供给至第二压缩机构（72）。

7. 发明公开

EP2031334A1 HEAT EXCHANGER 有权
标题翻译： WÄRMETAUSCHER
公开(公告)号：EP2031334A1
公开(公告)日：2009-03-04
申请号：EP07744382.8
申请日：2007-05-30
申请人： Daikin Industries, Ltd.
发明人： OZAKI, Takahiro , IWATA, Ikuhiro , OKAMOTO, Masakazu
IPC分类号： F28F1/32 , F25B1/00 , F25B39/00 , F28F1/00
CPC分类号： F25B39/00 , F25B9/008 , F25B2309/061 , F28D1/0477 , F28D1/05308 , F28D7/085 , F28F1/32 , F28F9/0229 , F28F2265/26 , F28F2270/00
摘要： A heat exchanger with improved heat exchange performance is provided. An indoor heat exchanger (6) is a heat exchanger that allows supercritical CO2 refrigerant to radiate heat to the air, and includes a plurality of plate fins (11) and a plurality of heat transfer tubes (12). Four or more rows (61 to 72) of heat transfer tubes (12) arranged in the direction crossing the airflow are formed in the upstream-to-downstream direction of the airflow. Each plate fin (11) is divided between at least one pair of adjacent rows (61, 62). The refrigerant flows from the heat transfer tubes (12) in the row (72) on the downstream side of the airflow to the heat transfer tubes (12) in the row (61) on the upstream side of the airflow.
摘要翻译：提供了具有改善的热交换性能的热交换器。室内热交换器（6）是允许超临界CO 2制冷剂向空气辐射热量的热交换器，并且包括多个板翅片（11）和多个传热管（12）。在空气流的上游 - 下游方向上形成沿着与空气流相交的方向排列的四排或更多列（61至72）的传热管（12）。每个板翅片（11）在至少一对相邻的行（61,62）之间划分。制冷剂从空气流下游侧的排（72）的传热管（12）流入气流上游侧的排（61）的传热管（12）。

8. 发明公开

EP4317861A1 HEAT PUMP DEVICE 审中-实审
公开(公告)号：EP4317861A1
公开(公告)日：2024-02-07
申请号：EP22781005.8
申请日：2022-03-29
申请人： DAIKIN INDUSTRIES, LTD.
发明人： IWATA, Ikuhiro , KUMAKURA, Eiji , TSUDA, Tetsushi , DOMI, Shinjiro , YOSHIMI, Atsushi
IPC分类号： F25B43/00 , F25B1/00 , B60H1/22
摘要： A heat pump apparatus is provided, which may prevent an increase in the risk of disproportionation reaction due to changes in the composition of a non-azeotropic mixture refrigerant when a first refrigerant is a compound having a carbon-carbon unsaturated bond. An air conditioner (1), which is a heat pump apparatus, includes a refrigerant circuit (10), a compressor (11), and a composition adjustment mechanism (100). The refrigerant circuit (10) circulates a non-azeotropic mixture refrigerant including a first refrigerant and a second refrigerant having a boiling point higher than the first refrigerant. The compressor (11) compresses the non-azeotropic mixture refrigerant. The first refrigerant is a compound represented by a molecular formula having one or more carbon-carbon unsaturated bonds. The composition adjustment mechanism (100) is provided in the refrigerant circuit (10). The composition adjustment mechanism (100) prevents an increase in the rate of the first refrigerant included in the non-azeotropic mixture refrigerant discharged from the compressor (11).

9. 发明公开

EP4317842A1 REFRIGERATION CYCLE DEVICE FOR AUTOMOBILE 审中-实审
公开(公告)号：EP4317842A1
公开(公告)日：2024-02-07
申请号：EP22781147.8
申请日：2022-03-30
申请人： DAIKIN INDUSTRIES, LTD.
发明人： IWATA, Ikuhiro , KUMAKURA, Eiji , TSUDA, Tetsushi , DOMI, Shinjiro
IPC分类号： F25B5/00 , F25B5/04 , F25B6/04 , F25B1/00 , B60H1/00 , B60H1/22
摘要： Provided is a refrigeration cycle device for vehicle capable of effectively using different temperature regions of a heat exchanger generated by using a zeotropic refrigerant mixture. The refrigeration cycle device for vehicle has a refrigerant circuit (10) in which a zeotropic refrigerant mixture circulates. The refrigerant circuit (10) has an indoor heat exchanger (18) including a first indoor heat exchanger (16) and a second indoor heat exchanger (17). The first indoor heat exchanger (16) and the second indoor heat exchanger (17) are arranged in series with each other in the flow of the refrigerant in the refrigerant circuit (10). The first indoor heat exchanger (16) is positioned on the upstream side of the second indoor heat exchanger (17) in a direction in which the refrigerant flows when the first indoor heat exchanger (16) and the second indoor heat exchanger (17) are caused to function as evaporators of the refrigerant.

10. 发明公开

EP4113034A1 AIR CONDITIONING APPARATUS 审中-实审转让
公开(公告)号：EP4113034A1
公开(公告)日：2023-01-04
申请号：EP21781735.2
申请日：2021-03-29
申请人： Daikin Industries, Ltd.
发明人： YOSHIMI, Atsushi , YAMADA, Takuro , KUMAKURA, Eiji , IWATA, Ikuhiro , MIYAZAKI, Takeru
IPC分类号： F25B5/02 , F25B5/04 , F25B13/00 , F25B1/00
摘要： An air conditioner (1a) includes a heat-source-side unit (2), a plurality of use-side units (3a, 3b, 3c, 3d), an intermediate unit (4a, 4b, 4c, 4d), and three or more connection pipes (5, 6, 7). The connection pipes (5, 6, 7) connect the heat-source-side unit (2) to the intermediate unit (4a, 4b, 4c, 4d). The intermediate unit (4a, 4b, 4c, 4d) includes an ejector (41a, 41b, 41c, 41d) and a gas-liquid separator (42a, 42b, 42c, 42d). The ejector (41a, 41b, 41c, 41d) pressurizes a refrigerant. A refrigerant that has flowed out from the ejector (41a, 41b, 41c, 41d) flows into the gas-liquid separator (42a, 42b, 42c, 42d). It is configured such that the refrigerant that has radiated heat in any of the use-side units (3a, 3b, 3c, 3d) that performs a heating operation is not pressurized by the ejector (41a, 41b, 41c, 41d).

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