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公开(公告)号：EP4431841A1
公开(公告)日：2024-09-18
申请号：EP24719036.6
申请日：2024-01-11
发明人： IYOSHI, Yuta , YAMANOI, Yoshiki , MIYAZAKI, Takeru , YOSHIMI, Atsushi , NUNO, Hayato , TAKENAKA, Kei , UCHIDA, Kengo , AZUMA, Shota , MATSUDA, Hiroaki
摘要： Provided is a cascade refrigeration cycle apparatus that is highly efficient. The cascade refrigeration cycle apparatus includes a fan (40), a first cycle, a second cycle, and a cascade heat exchanger. In the first cycle, a first refrigerant having a critical point of 40°C or higher circulates. The first cycle includes a condenser (104) in which air supplied by the fan and the first refrigerant exchange heat. In the second cycle, carbon dioxide as a second refrigerant circulates. The second cycle includes a first heat exchanger (26) functioning as a radiator in which air supplied by the fan and the second refrigerant exchange heat. In the cascade heat exchanger, the first refrigerant and the second refrigerant exchange heat. The condenser is disposed on a windward side of the radiator in an airflow direction (D) that is a direction of an airflow generated by the fan.
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公开(公告)号：EP4407243A1
公开(公告)日：2024-07-31
申请号：EP23864106.2
申请日：2023-11-21
发明人： IYOSHI, Yuta , YAMANOI, Yoshiki , MIYAZAKI, Takeru , YOSHIMI, Atsushi , NUNO, Hayato , TAKENAKA, Kei , UCHIDA, Kengo , AZUMA, Shota , MATSUDA, Hiroaki
摘要： An air conditioning unit includes an electric component unit (420), a first heat exchanger (12), a second heat exchanger (23), a fan (44), a casing (41), and a partition plate (46). The first heat exchanger (12) exchanges heat between a combustible first refrigerant and air. The second heat exchanger (23) exchanges heat between a non-combustible second refrigerant and air. The fan (44) causes air to flow to the first heat exchanger (12) and the second heat exchanger (23). The partition plate (46) partitions an inside of the casing (41) into a first chamber (S1) in which the first heat exchanger (12), the second heat exchanger (23), and the fan (44) are disposed, and a second chamber (S2) in which the electric component unit (420) is disposed. The partition plate (46) is provided with a communication hole (461) that communicates the first chamber (S1) and the second chamber (S2) above a first brazed portion (120) located uppermost among a plurality of brazed portions (121) of the first heat exchanger (12).
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公开(公告)号：EP4462038A1
公开(公告)日：2024-11-13
申请号：EP24726525.9
申请日：2024-03-28
发明人： IYOSHI, Yuta , MIYAZAKI, Takeru , YOSHIMI, Atsushi , YAMANOI, Yoshiki , HORITA, Takuya , MATSUI, Hidenori , OKA, Yusuke , AZUMA, Shota
摘要： A refrigeration cycle system includes: a compressor lubricated by lubricating oil and configured to compress refrigerant; an evaporator configured to allow the refrigerant having dissipated heat and having been decompressed after the compression by the compressor to pass therethrough and cause the passing refrigerant to exchange heat with an object; and a storage container provided between the evaporator and the compressor, the storage container being configured to store the refrigerant and the lubricating oil. The system is capable of supplying the lubricating oil stored in the storage container to the compressor even when an environmental temperature of an environment in which the storage container is installed becomes an inversion temperature at which a density of the lubricating oil and a density of the refrigerant in a liquid state are inverted.
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公开(公告)号：EP4113033A1
公开(公告)日：2023-01-04
申请号：EP21781291.6
申请日：2021-03-29
摘要： An air conditioner (1) includes a heat-source-side unit (2), a plurality of use-side units (3a, 3b, 3c, 3d), an intermediate unit (4), and two connection pipes (5, 6). The intermediate unit (4) switches each of a plurality of use-side heat exchangers to individually function as an evaporator or a radiator of a refrigerant. The two connection pipes (5, 6) connect the heat-source-side unit (2) and the intermediate unit (4). The intermediate unit (4) has an ejector (41) and a gas-liquid separator (42). The ejector (41) pressurizes the refrigerant evaporated in the evaporator by using a driving flow. The refrigerant flowing out from the ejector (41) flows into the gas-liquid separator (42). The ejector (41) functions in a cooling-heating mixed operation mainly for cooling in which a sum of cooling operation loads of the plurality of use-side units (3a, 3b, 3c, 3d) is greater than a sum of heating operation loads of the plurality of use-side units (3a, 3b, 3c, 3d).
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公开(公告)号：EP4450883A1
公开(公告)日：2024-10-23
申请号：EP22907063.6
申请日：2022-10-31
摘要： A first ventilation system 11 includes a refrigerant circuit 50 in which a compressor 42, a first heat exchanger 23, and a second heat exchanger 33 are connected by a refrigerant pipe 51 and a refrigerant flows inside, a supply fan 22 that supplies air in an outdoor space S2 to an indoor space S1 through the first heat exchanger 23, an exhaust fan 32 that exhausts air in the indoor space S1 to the outdoor space S2 through the second heat exchanger 33, and a control unit 16. The control unit 16 determines whether the supply fan 22 and the exhaust fan 32 are normal. When determining that one of the supply fan 22 or the exhaust fan 32 is abnormal, the control unit 16 stops the one of the supply fan 22 or the exhaust fan 32 determined to be abnormal and continues an operation of another one of the supply fan 22 or the exhaust fan 32 determined to be normal.
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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
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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公开(公告)号：EP4019861A1
公开(公告)日：2022-06-29
申请号：EP20873121.6
申请日：2020-09-29
发明人： YOSHIMI, Atsushi , KUMAKURA, Eiji , IWATA, Ikuhiro , MIYAZAKI, Takeru , YAMADA, Takuro , YAMANOI, Yoshiki , IYOSHI, Yuuta
摘要： An air conditioning apparatus (1) is an air conditioning apparatus dedicated to cooling and including a first circuit (C1) and a second circuit (C2). The first circuit (C1) has an outdoor heat exchanger (12) that cools a first refrigerant by outdoor air. In the second circuit (C2), a first heat transfer medium that is cooled by exchanging heat with the first refrigerant that flows in the first circuit (C1) flows. The first refrigerant is a HFO refrigerant having a critical temperature higher than that of R32.
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公开(公告)号：EP4019860A1
公开(公告)日：2022-06-29
申请号：EP20871065.7
申请日：2020-09-29
摘要： A heat-source side cycle and a load side cycle share a cascade heat exchanger (41, 42). A total number of the heat-source side cycle and the load side cycle is three or more. A first cycle (C1) circulates a first refrigerant or heat medium. A second cycle (C2) circulates a second refrigerant or heat medium. A third cycle (C3) circulates a third refrigerant or heat medium. The first refrigerant or heat medium, the second refrigerant or heat medium, and the third refrigerant or heat medium are different from one another.
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公开(公告)号：EP4450888A1
公开(公告)日：2024-10-23
申请号：EP22907562.7
申请日：2022-12-16
发明人： ODO, Tsunahiro , TAKAHASHI, Takashi , TSURUZONO, Shota , HANADA, Takuya , FUJITA, Naotoshi , YAMANOI, Yoshiki , IYOSHI, Yuta , SAEKI, Kumiko , MIYAZAKI, Takeru , MATSUI, Nobuki , MAEDA, Toshiyuki , OKAMOTO, Tetsuya
IPC分类号： F24F11/70 , F24F1/0038 , F24F7/007 , F24F7/08 , F24F11/46 , F24F11/65 , F24F11/74 , F24F11/77 , F24F11/86
摘要： The air-conditioning system according to an embodiment is provided with a ventilation device, an air-conditioner, and a control unit for controlling the ventilation device and the air-conditioner, wherein the control unit stores a first capability indicating a heat load that can be output corresponding to the power consumption of the ventilation device and a second capability indicating a heat load that can be output corresponding to the power consumption of the air conditioner, acquires the temperature of an indoor space, and sets the ventilation device and the air conditioner to share the first heat load that needs to be adjusted in the indoor space calculated based on the temperature of the indoor space according to the first capability and the second capability.
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公开(公告)号：EP4450885A1
公开(公告)日：2024-10-23
申请号：EP22907358.0
申请日：2022-12-08
发明人： TSURUZONO, Shota , TAKAHASHI, Takashi , ODO, Tsunahiro , MATSUI, Nobuki , YAMANOI, Yoshiki , FUJITA, Naotoshi , HANADA, Takuya , IYOSHI, Yuta , SAEKI, Kumiko , MIYAZAKI, Takeru , MAEDA, Toshiyuki , OKAMOTO, Tetsuya
IPC分类号： F24F11/41
摘要： A ventilation apparatus includes a compressor; a first heat exchanger configured to function as a condenser or an evaporator; a first air flow path configured to supply air taken in from outdoors to an indoor space after passing through the first heat exchanger; a second heat exchanger configured to function as a condenser or an evaporator; a second air flow path configured to exhaust air taken in from the indoor space to the outdoors after passing through the second heat exchanger; a refrigerant circuit through which a refrigerant flows, the refrigerant circuit being connected to the compressor, the first heat exchanger, and the second heat exchanger by a refrigerant pipe; and a control unit configured to guide a flow of air in the indoor space to the second heat exchanger when the second heat exchanger is determined to be in a frosted state, to increase a temperature of the second heat exchanger, and configured to output a predetermined instruction to an actuator configured to control a state of the refrigerant in the refrigerant circuit to increase a temperature of the refrigerant flowing into the second heat exchanger.
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