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公开(公告)号：EP4253876A1
公开(公告)日：2023-10-04
申请号：EP20963476.5
申请日：2020-11-25
IPC分类号： F25B45/00
摘要： A refrigerant-collecting apparatus (100) includes a first port (101), a second port (102), a refrigerant channel (30), and an identifying unit (210). The first port (101) is connected to target equipment (10) from which a refrigerant is collected. The second port (102) is connected to a container (110) in which the refrigerant collected from the target equipment (10) is put. The refrigerant channel (30) connects the first port (101) and the second port (102). The refrigerant channel (30) includes at least an expansion mechanism (40), a compressor (80), and a heat exchanger (90). The identifying unit (210) identifies the type of the refrigerant that is being collected from the target equipment (10). On the basis of a first value and a second value, the identifying unit (210) identifies the type of the refrigerant that is being collected from the target equipment (10). The first value relates to a first refrigerant temperature, which is a refrigerant temperature on the first-port-(101) side of the compressor (80). The second value relates to a second refrigerant temperature, which is a refrigerant temperature on the second-port-(102) side of the compressor (80).
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公开(公告)号：EP4040085A1
公开(公告)日：2022-08-10
申请号：EP20873274.3
申请日：2020-08-11
发明人： YAMADA, Takuro , YOSHIMI, Atsushi , KUMAKURA, Eiji , IWATA, Ikuhiro , MIYAZAKI, Takeru , MATSUOKA, Hiromune
摘要： A refrigeration cycle device improves work efficiency at the time of construction related to connection pipes. A first connection flow path (50) connects a heat source unit (10) and a first use unit (31) and causes a refrigerant to flow. A second connection flow path (80) connects the heat source unit (10) and the first use unit and causes a refrigerant whose specific enthalpy is smaller than a specific enthalpy of the refrigerant that flows in the first connection flow path (50) to flow. A refrigerant whose saturation pressure is 4.5 MPa or higher when the saturation temperature reaches 65°C, or a refrigerant whose critical temperature is 65°C or lower is used. The first connection flow path (50) includes a metallic first connection pipe (51) and a metallic second connection pipe (52). A refrigerant flows from one of the heat source unit (10) and the first use unit (31) to both of the first connection pipe (51) and the second connection pipe (52), and both refrigerants that each flow in a corresponding one of the first connection pipe (51) and the second connection pipe (52) each flow from the corresponding one of the first connection pipe (51) and the second connection pipe (52) to the other of the heat source unit (10) and the first use unit (31).
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公开(公告)号：EP4040076A1
公开(公告)日：2022-08-10
申请号：EP20873293.3
申请日：2020-09-25
发明人： MIYAZAKI, Takeru , MATSUOKA, Hiromune , YOSHIMI, Atsushi , KUMAKURA, Eiji , IWATA, Ikuhiro , MINAMIDA, Tomoatsu , YAMADA, Takuro
摘要： A refrigeration cycle apparatus eliminates or reduces the possibility that refrigerant under high pressure in a heat exchanger will flow out in large quantity into a low-pressure reservoir or into the intake side of a compressor when switching of the four-way valve is performed. A switching mechanism (40) includes a first channel (F1). The switching mechanism (40) performs switching among a first connection state, a second connection state, and a third connection state. In the first connection state, the refrigeration cycle apparatus (1) repeatedly performs a first cycle in which refrigerant flows through a compressor (10), a first heat exchanger (20), a second heat exchanger (30), and the compressor (10) in this order. In the second connection state, the refrigeration cycle apparatus (1) repeatedly performs a second cycle in which refrigerant flows through the compressor (10), the second heat exchanger (30), the first heat exchanger (20), and the compressor (10) in this order. In the third connection state, a passage between the compressor (10) and the first heat exchanger (20) and a passage between the compressor (10) and the second heat exchanger (30) are closed, and the first channel (F1) in the refrigeration cycle apparatus (1) provides interconnection between the first heat exchanger (20) and the second heat exchanger (30).
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公开(公告)号：EP4033175A1
公开(公告)日：2022-07-27
申请号：EP20872043.3
申请日：2020-09-24
摘要： In an air conditioner (1) capable of a cooling and heating simultaneous operation and including plural heat-source-side heat exchangers (81, 82) and plural use-side units (101a, 101b, 101c), a first heat-source-side heat exchanger (81) and a first economizer heat exchanger (61) are connected in series in a first main heat-source-side flow path (21), and a second heat-source-side heat exchanger (82) and a second economizer heat exchanger (62) are connected in series in a second main heat-source-side flow path (22).
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公开(公告)号：EP3862651A1
公开(公告)日：2021-08-11
申请号：EP19869332.7
申请日：2019-09-27
摘要： In order to increase the evaporation capacity of a use-side heat exchanger regardless of operating conditions, a suction injection pipe (61) and a subcooling heat exchanger (62) are provided at a main refrigerant circuit (20) in which a main refrigerant circulates. Further, a sub-refrigerant circuit (80) that differs from the main refrigerant circuit (20) and in which a sub-refrigerant circulates is provided. A control unit (9) performs control for switching between a cooling action of the subcooling heat-exchanger that cools the main refrigerant that is sent to a main use-side heat exchanger (72a, 72b) by using the suction injection pipe (61) and the subcooling heat exchanger (62), and a cooling action of the sub-refrigerant-circuit that cools the main refrigerant that is sent to the main use-side heat exchanger (72a, 72b) by using the sub-refrigerant circuit 80.
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公开(公告)号：EP3730865A1
公开(公告)日：2020-10-28
申请号：EP18891586.2
申请日：2018-12-13
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
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：EP3730580A1
公开(公告)日：2020-10-28
申请号：EP18891899.9
申请日：2018-12-18
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 , OHTSUKA, Keisuke , ASANO, Yoshinari , AOTA, Keiji , YANAGI, Yuuichi , NAKAO, Yoshikazu , ABE, Takeo , TODA, Yumi , TSUDA, Tetsushi
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：EP3730572A1
公开(公告)日：2020-10-28
申请号：EP18890850.3
申请日：2018-12-18
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
摘要： A refrigeration cycle apparatus that is able to suppress a decrease in capacity when a refrigerant that contains at least 1,2-difluoroethylene is used is provided. In an air conditioner (1) including a refrigerant circuit (10) in which a compressor (21), an outdoor heat exchanger (23), an outdoor expansion valve (24), a liquid-side connection pipe (6), an indoor heat exchanger (31), and a gas-side connection pipe (5) are connected, a refrigerant containing at least 1,2-difluoroethylene is used, a pipe outer diameter of the liquid-side connection pipe (6) and a pipe outer diameter of the gas-side connection pipe (5) each are D 0 /8 inches (where, "D 0 -1/8 inches" is a pipe outer diameter of a connection pipe when refrigerant R32 is used), a range of the D 0 of the liquid-side connection pipe (6) is "2 ≤ D 0 ≤ 4", and a range of the Do of the gas-side connection pipe (5) is "3 ≤ D 0 ≤ 8".
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公开(公告)号：EP3730571A1
公开(公告)日：2020-10-28
申请号：EP18890744.8
申请日：2018-12-18
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
摘要： A refrigeration cycle apparatus that is able to reduce the amount of refrigerant used while reducing a pressure loss in the case where a refrigerant containing at least 1,2-difluoroethylene is used is provided. In an air conditioner (1) including a refrigerant circuit (10), including a compressor (21), an outdoor heat exchanger (23), an outdoor expansion valve (24), and an indoor heat exchanger (31), and a refrigerant containing at least 1,2-difluoroethylene and sealed in the refrigerant circuit (10), the outdoor heat exchanger (23) has a heat transfer tube (23b) of which a pipe diameter is greater than or equal to 6.35 mm and less than 10.0 mm.
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公开(公告)号：EP2169180A1
公开(公告)日：2010-03-31
申请号：EP08751706.6
申请日：2008-05-12
发明人： KUMAKURA, Eiji , SAKITANI, Katsumi
CPC分类号： F04C23/008 , F04C18/3562 , F04C23/003 , F04C2210/222
摘要： An internal space of a casing (31) is partitioned into a first space (38) and a second space (39) by a partition member (61, 80). An expansion mechanism (60) is disposed in the first space (38), and a compression mechanism (50) and an electric motor (45) are disposed in the second space (39). A terminal (90) is provided on the casing (31) so that a back side of the terminal (90) faces the second space (39).
摘要翻译： 壳体31的内部空间通过分隔部件61,80被分隔为第一空间38和第二空间39。 在第一空间38配置有膨胀机构60，在第二空间39配置有压缩机构50和电动机45。 端子（90）设置在壳体（31）上，使得端子（90）的后侧面向第二空间（39）。
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