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公开(公告)号：EP3521716A1
公开(公告)日：2019-08-07
申请号：EP16917738.3
申请日：2016-09-30
IPC分类号： F24F11/30
摘要： An indoor unit includes a housing having an air inlet and an air outlet, a refrigerant circuit installed in the housing and provided such that a first heat exchanger, a second heat exchanger, and a refrigerant exchange capacity varying device configured to vary refrigerant temperatures in the first heat exchanger and the second heat exchanger are connected to each other by pipes, and a fan installed in the housing and configured to send air to the first heat exchanger and the second heat exchanger. The air outlet includes a first air outlet through which air passing through the fan and the first heat exchanger is blown, and a second air outlet through which air passing through the fan and the second heat exchanger is blown. The refrigerant exchange capacity varying device includes at least a switching device configured to change a flow of refrigerant in the refrigerant circuit, and a dual-temperature air-blow operation in which streams of air having different temperatures are blown through the first air outlet and the second air outlet is performed by causing the refrigerant exchange capacity varying device to vary the refrigerant temperatures or refrigerant flow rates in the first heat exchanger and the second heat exchanger or to vary both the refrigerant temperatures and the refrigerant flow rates in the first heat exchanger and the second heat exchanger.
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公开(公告)号：EP4234992A2
公开(公告)日：2023-08-30
申请号：EP23176630.4
申请日：2019-09-18
IPC分类号： F16K1/38
摘要： A refrigeration cycle apparatus includes a first flow switch valve including first to fourth ports, a second flow switch valve and a third flow switch valve each including fifth to seventh ports, a compressor, a discharge pipe connecting a discharge port of the compressor and the first port, a first high pressure pipe connecting between the discharge pipe and the fifth ports, a bypass expansion valve provided at a part of the first high pressure pipe, the part extending, a first outdoor heat exchanger connected to the seventh port of the second flow switch valve, a second outdoor heat exchanger connected to the seventh port of the third flow switch valve, and a controller. The controller is configured to perform a differential pressure ensuring process, when switching the second flow switch valve or the third flow switch valve. In the differential pressure ensuring process, the controller is configured to set operation frequency of the compressor to a first frequency and set opening degree of the bypass expansion valve to a first degree if a first condition is not met, and set the operation frequency of the compressor to a second frequency which is higher than the first frequency or set the opening degree of the bypass expansion valve to a second degree which is larger than the first degree if the first condition is met.
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公开(公告)号：EP4006452A1
公开(公告)日：2022-06-01
申请号：EP19938425.6
申请日：2019-07-25
摘要： A refrigeration cycle apparatus includes: a compressor; an indoor heat exchanger; an outdoor heat exchanger including first and second outdoor heat exchangers; a bypass flow passage that causes a discharge side of the compressor to communicate with the first outdoor heat exchanger or the second outdoor heat exchanger; a flow control valve provided at the bypass flow passage; and a controller that performs a heating operation in which the first and second outdoor heat exchangers are caused to operate as an evaporator and the indoor heat exchanger is caused to operate as a condenser and a simultaneous heating and defrosting operation in which part of refrigerant discharged from the compressor is supplied to one of the first and second outdoor heat exchangers through the bypass flow passage, the other of the first and second outdoor heat exchangers is caused to operate as an evaporator, and the indoor heat exchanger is caused to operate as a condenser. When the simultaneous heating and defrosting operation is performed, the controller changes an upper limit frequency of the compressor to a value higher than the upper limit frequency of the compressor in the heating operation.
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公开(公告)号：EP3517855B1
公开(公告)日：2020-09-16
申请号：EP16916807.7
申请日：2016-09-23
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公开(公告)号：EP3385646A1
公开(公告)日：2018-10-10
申请号：EP15909778.1
申请日：2015-12-02
IPC分类号： F25B47/02 , F25B41/04 , F16K11/074 , F25B13/00
CPC分类号： F25B41/046 , F16K11/074 , F25B13/00 , F25B41/04 , F25B47/02 , F25B47/022 , F25B2313/0251 , F25B2347/021
摘要： An air conditioning apparatus (301) includes a flow path switching valve (202). An outdoor heat exchanger (40) is divided into a first heat exchanger (40A) and a second heat exchanger (40B). During heating operation, a refrigerant supplied from an expansion valve (30) is diverted and supplied to the first heat exchanger (40A) and the second heat exchanger (40B). During the heating operation, the flow path switching valve (202) combines the flows of the refrigerants discharged from the first heat exchanger (40A) and the second heat exchanger (40B), and returns the resultant refrigerant to a refrigerant inlet of a compressor (10). A valve body (203) of the flow path switching valve (202) is configured such that three ports (B1, B2 and C) are internally communicated with one another while being isolated from an other single port (A) during the heating operation. The valve body (203) is configured such that two ports (A and B 1 or A and B2) are internally communicated with each other and other two ports (B2 and C or B 1 and C) are internally communicated with each other during defrosting operation of the first heat exchanger (40A) or the second heat exchanger (40B).
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公开(公告)号：EP3798539A1
公开(公告)日：2021-03-31
申请号：EP18919812.0
申请日：2018-05-23
发明人： TASHIRO, Yusuke , HAYAMARU, Yasuhide , KONDO, Masakazu , SATO, Masakazu , NAKAGAWA, Naoki , KAWASHIMA, Atsushi
摘要： The refrigeration cycle apparatus includes a refrigerant circuit, and a controller configured to control the refrigerant circuit. The refrigerant circuit further includes a bypass flow path, and a flow control valve. The bypass flow path communicates between the discharge side of the compressor and the first outdoor heat exchanger or between the discharge side of the compressor and the second outdoor heat exchanger. The flow control valve is provided to the bypass flow path. The refrigerant circuit is configured to be able to perform a heating defrosting simultaneous operation. The heating defrosting simultaneous operation is an operation of supplying part of the refrigerant discharged from the compressor to one of the first outdoor heat exchanger and the second outdoor heat exchanger via the bypass flow path, causing the other of the first outdoor heat exchanger and the second outdoor heat exchanger to serve as an evaporator, and causing the indoor heat exchanger to serve as a condenser. The controller is configured to, during the heating defrosting simultaneous operation, control the opening degree of the flow control valve based on the temperature of a heating target.
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公开(公告)号：EP3647672A1
公开(公告)日：2020-05-06
申请号：EP17915491.9
申请日：2017-06-27
IPC分类号： F24F11/30
摘要： An air conditioner (201) includes a switching valve (202), a flow rate restricting portion (104) and an on-off valve (204). The switching valve (202) is provided in a flow path between a compressor (10) and an outdoor heat exchanger (40). The outdoor heat exchanger (40) includes a heat exchange portion (40A) and a heat exchange portion (40B). During heating operation, the switching valve (202) causes a second connection port (B1), a third connection port (B2) and a first connection port (A) to communicate with one another. The flow rate restricting portion (104) and the on-off valve (204) are connected in series between an outlet and an inlet of the compressor (10) during the heating operation, to bypass a part of refrigerant. During defrosting operation of the heat exchange portion (40A), the switching valve (202) is configured such that a fourth connection port (C) and the second connection port (B1) communicate with each other, and the third connection port (B2) and the first connection port (A) communicate with each other.
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公开(公告)号：EP3534088A1
公开(公告)日：2019-09-04
申请号：EP16920284.3
申请日：2016-10-28
摘要： An air conditioner (10) includes a refrigerant circuit (13) and refrigerant. The refrigerant circuit (13) has a compressor (1), a condenser (2), a pressure-regulating valve (3), and an evaporator (4). The refrigerant is R32. The pressure-regulating valve (3) includes a flow path (33) causing the refrigerant flowing from the condenser (2) to flow to the evaporator (4), a pressure reference chamber (S2) partitioned from the flow path (33) and filled with inert gas, and a valve portion (34) disposed in the flow path (33). The pressure-regulating valve (3) is configured to adjust a degree of opening of the valve portion (34) to adjust a flow rate of the refrigerant flowing through the flow path (33). The valve portion (34) is configured to increase the degree of opening when a pressure in the flow path (33) is higher than a pressure in the pressure reference chamber (S2), and reduce the degree of opening when the pressure in the flow path (33) is lower than the pressure in the pressure reference chamber (S2).
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公开(公告)号：EP4234992A3
公开(公告)日：2023-10-04
申请号：EP23176630.4
申请日：2019-09-18
摘要： A refrigeration cycle apparatus includes a first flow switch valve including first to fourth ports, a second flow switch valve and a third flow switch valve each including fifth to seventh ports, a compressor, a discharge pipe connecting a discharge port of the compressor and the first port, a first high pressure pipe connecting between the discharge pipe and the fifth ports, a bypass expansion valve provided at a part of the first high pressure pipe, the part extending, a first outdoor heat exchanger connected to the seventh port of the second flow switch valve, a second outdoor heat exchanger connected to the seventh port of the third flow switch valve, and a controller. The controller is configured to perform a differential pressure ensuring process, when switching the second flow switch valve or the third flow switch valve. In the differential pressure ensuring process, the controller is configured to set operation frequency of the compressor to a first frequency and set opening degree of the bypass expansion valve to a first degree if a first condition is not met, and set the operation frequency of the compressor to a second frequency which is higher than the first frequency or set the opening degree of the bypass expansion valve to a second degree which is larger than the first degree if the first condition is met.
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公开(公告)号：EP3985325A1
公开(公告)日：2022-04-20
申请号：EP19933878.1
申请日：2019-09-18
摘要： A refrigeration cycle apparatus includes a first flow switch valve including first to fourth ports, a second flow switch valve and a third flow switch valve each including fifth to seventh ports, a compressor, a discharge pipe connecting a discharge port of the compressor and the first port, a first high pressure pipe connecting between the discharge pipe and the fifth ports, a bypass expansion valve provided at a part of the first high pressure pipe, the part extending, a first outdoor heat exchanger connected to the seventh port of the second flow switch valve, a second outdoor heat exchanger connected to the seventh port of the third flow switch valve, and a controller. The controller is configured to perform a differential pressure ensuring process, when switching the second flow switch valve or the third flow switch valve. In the differential pressure ensuring process, the controller is configured to set operation frequency of the compressor to a first frequency and set opening degree of the bypass expansion valve to a first degree if a first condition is not met, and set the operation frequency of the compressor to a second frequency which is higher than the first frequency or set the opening degree of the bypass expansion valve to a second degree which is larger than the first degree if the first condition is met.
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