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公开(公告)号：US11976859B2
公开(公告)日：2024-05-07
申请号：US18374904
申请日：2023-09-29
发明人： Hiroki Ueda , Atsushi Yoshimi , Eiji Kumakura , Masaki Tanaka , Masaki Nakayama , Ryuhei Kaji
CPC分类号： F25B43/00 , F25B9/006 , F25B9/008 , F25B2400/08 , F25B2400/23 , F25B2600/2501
摘要： A refrigeration cycle apparatus includes a refrigeration cycle, an adsorption section, and a first bypass flow path. The refrigeration cycle includes a compressor, a radiator, an expansion mechanism, and an evaporator, and uses a non-azeotropic refrigerant mixture including a first refrigerant and a second refrigerant. The adsorption section includes an adsorbent and stores the first refrigerant adsorbed by the adsorbent. The adsorbent adsorbs the first refrigerant, and does not adsorb the second refrigerant or the adsorption performance thereof for the second refrigerant is lower than the adsorption performance thereof for the first refrigerant. The first bypass flow path connects a first end which is a high-pressure part of the refrigeration cycle and a second end which is a low-pressure part of the refrigeration cycle. The adsorption section and a valve are disposed in the first bypass flow path.
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公开(公告)号：US20230021512A1
公开(公告)日：2023-01-26
申请号：US17957421
申请日：2022-09-30
摘要： An air conditioner includes: a heat-source-side unit including a compressor and a heat-source-side heat exchanger; use-side units each including a use-side heat exchanger; an intermediate unit that causes the use-side heat exchanger of each of the use-side units to individually function as an evaporator or a radiator of a refrigerant; and three or more connection pipes that connect the heat-source-side unit to the intermediate unit. The intermediate unit includes: an ejector that pressurizes the refrigerant; and a gas-liquid separator into which the refrigerant flowing out from the ejector flows. The refrigerant that has released heat in any of the use-side units that perform a heating operation is not pressurized by the ejector.
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公开(公告)号：US20220214056A1
公开(公告)日：2022-07-07
申请号：US17704250
申请日：2022-03-25
摘要： An air conditioner includes: use-side units that are each switchable between a cooling operation and a heating operation; and a heat-source-side unit including a compressor, a discharge pipe through which a refrigerant discharged from the compressor flows, a first main heat-source-side flow path and a second main heat-source-side flow path that branch off from the discharge pipe, a first heat-source-side heat exchanger, a second heat-source-side heat exchanger, a first economizer heat exchanger, and a second economizer heat exchanger. The first heat-source-side heat exchanger is connected to the first economizer heat exchanger in series in the first main heat-source-side flow path. The second heat-source-side heat exchanger is connected to the second economizer heat exchanger in series in the second main heat-source-side flow path.
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公开(公告)号：US20220325923A1
公开(公告)日：2022-10-13
申请号：US17618202
申请日：2020-06-11
发明人： Takuro Yamada , Atsushi Yoshimi , Eiji Kumakura , Ikuhiro Iwata , Kazuhiro Furusho , Mikio Kagawa , Michio Moriwaki , Tomoatsu Minamida , Hiromune Matsuoka , Junya Minami
摘要： A refrigerant cycle system includes: a first refrigerant circuit that includes a first heat exchanger, a first compressor, and a first cascade heat exchanger and that is configured as a first vapor compression refrigeration cycle; a second refrigerant circuit that includes the first cascade heat exchanger, a second compressor, and a second heat exchanger and that is configured as a second vapor compression refrigeration cycle; a first unit that accommodates the first heat exchanger and the first compressor; a second unit that accommodates the first cascade heat exchanger and the second compressor; and a third unit that accommodates the second heat exchanger. The first unit, the second unit, and the third unit are disposed apart from each other. The first cascade heat exchanger performs heat exchange between a first refrigerant that flows through the first refrigerant circuit and a second refrigerant that flows through the second refrigerant circuit.
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公开(公告)号：US20220316767A1
公开(公告)日：2022-10-06
申请号：US17618075
申请日：2020-06-10
摘要： A refrigerant cycle system includes a primary-side cycle that circulates a first refrigerant, a secondary-side cycle that circulates a second refrigerant, and a cascade heat exchanger that exchanges heat between the first refrigerant and the second refrigerant. The primary-side cycle includes a primary-side connection pipe. The secondary-side cycle includes a secondary-side connection pipe. The primary-side connection pipe includes a primary-side gas connection pipe and a primary-side liquid connection pipe. The secondary-side connection pipe includes a secondary-side gas connection pipe and a secondary-side liquid connection pipe. The pipe diameter of the secondary-side gas connection pipe is smaller than the pipe diameter of the primary-side gas connection pipe, or the pipe diameter of the secondary-side liquid connection pipe is smaller than the pipe diameter of the primary-side liquid connection pipe.
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公开(公告)号：US20220316765A1
公开(公告)日：2022-10-06
申请号：US17608913
申请日：2020-06-10
摘要： A refrigerant cycle system includes: a primary-side cycle of a vapor compression type that circulates a first refrigerant; a secondary-side cycle of a vapor compression type that circulates a second refrigerant; and a cascade heat exchanger that exchanges heat between the first refrigerant and the second refrigerant. The secondary-side cycle includes a secondary-side heat exchanger that uses cold or heat obtained by the second refrigerant from the cascade heat exchanger. The secondary-side heat exchanger includes a flat multi-hole pipe.
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公开(公告)号：US11906207B2
公开(公告)日：2024-02-20
申请号：US16913589
申请日：2020-06-26
发明人： Eiji Kumakura , Takuro Yamada , Atsushi Yoshimi , Ikuhiro Iwata , Mitsushi Itano , Daisuke Karube , Yuuki Yotsumoto , Kazuhiro Takahashi , Tatsuya Takakuwa , Yuzo Komatsu , Shun Ohkubo
CPC分类号： F25B13/00 , F25B5/04 , F25B31/004 , F25B2400/053 , F25B2400/054 , F25B2400/07
摘要： A two-stage refrigeration apparatus (500) includes a first cycle (510) and a second cycle (520). The first cycle (510) includes a first compressor (511), a first condenser (512), a first expansion mechanism (513), and a first evaporator (514) that are arranged in such a manner as to be connected to the first cycle. A first refrigerant circulates through the first cycle. The second cycle (520) includes a second downstream-side condenser (523) and a second evaporator (527) that are arranged in such a manner as to be connected to the second cycle. A second refrigerant circulates through the second cycle. The first evaporator (514) and the second downstream-side condenser (523) constitute a cascade condenser (531). In the cascade condenser (531), heat is exchanged between the first refrigerant and the second refrigerant. At least one of the first refrigerant and the second refrigerant is a refrigerant mixture containing at least 1,2-difluoroethylene (HFO-1132(E)).
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公开(公告)号：US11535781B2
公开(公告)日：2022-12-27
申请号：US16955565
申请日：2018-12-18
发明人： Eiji Kumakura , Takuro Yamada , Atsushi Yoshimi , Ikuhiro Iwata , Mitsushi Itano , Daisuke Karube , Yuuki Yotsumoto , Kazuhiro Takahashi , Tatsuya Takakuwa , Yuzo Komatsu , Shun Ohkubo , Keisuke Ohtsuka , Yoshinari Asano , Keiji Aota , Yuuichi Yanagi , Yoshikazu Nakao , Takeo Abe , Yumi Toda , Tetsushi Tsuda
IPC分类号： C09K5/04 , F25B13/00 , F25B29/00 , F25B31/00 , F25B49/02 , F24H4/02 , F25B41/00 , F24F1/0059 , F24F1/24 , F24F13/30 , F24F1/0067 , F24F1/0063 , F24F3/052 , F25B7/00 , F25B39/00 , F25B39/02 , F24F1/14 , F24F1/32 , F24F1/34 , F24F1/38 , F25B9/00 , F25B1/00 , F25B31/02 , F24F5/00 , F24F11/88 , F25B1/04 , F24H1/00 , F25B21/00 , F25B41/34 , H02K7/14
摘要： 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 at least 1,2-difluoroethylene.
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公开(公告)号：US11506425B2
公开(公告)日：2022-11-22
申请号：US16912003
申请日：2020-06-25
发明人： Eiji Kumakura , Takuro Yamada , Atsushi Yoshimi , Ikuhiro Iwata , Mitsushi Itano , Daisuke Karube , Yuuki Yotsumoto , Kazuhiro Takahashi , Tatsuya Takakuwa , Yuzo Komatsu , Shun Ohkubo
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).
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公开(公告)号：US11493244B2
公开(公告)日：2022-11-08
申请号：US16912112
申请日：2020-06-25
发明人： Eiji Kumakura , Takuro Yamada , Atsushi Yoshimi , Ikuhiro Iwata , Mitsushi Itano , Daisuke Karube , Yuuki Yotsumoto , Kazuhiro Takahashi , Yuzo Komatsu , Shun Ohkubo , Tatsuya Takakuwa
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.
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