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1. 发明公开

EP3967942A1 SAFETY SYSTEM AND METHOD FOR CONSTRUCTING AIR CONDITIONING SYSTEM 审中-实审转让
公开(公告)号：EP3967942A1
公开(公告)日：2022-03-16
申请号：EP21196531.4
申请日：2021-09-14
申请人： DAIKIN INDUSTRIES, LTD. , Daikin Europe N.V.
发明人： STEEN, David , CORNELIS, Kevin , DEGRANDE, Arne , NAKAGAWA, Yuusuke , TANWAR, Harshit
IPC分类号： F24F11/00 , F24F11/62 , F24F13/20 , F24F3/06 , F24F11/36 , F24F11/89 , F24F13/10 , F24F140/40
摘要： Provided a safety system for a heat pump system, comprising a plurality of valve units each having refrigerant pipe portions with control valves, a refrigerant leakage detector, and a casing (400e) accommodating the valves and the refrigerant leakage detector and formed with first and second openings (420, 430). The safety system further comprises a connection structure connecting the internal spaces of the casings via the first and second openings, and a discharge structure connected to the connection structure or one of the casings and configured to discharge air from the internal space of the casing in which a refrigerant leakage has occurred. The casing has first and second lateral faces facing different directions, and the first opening is formed in the first lateral face and the second opening is formed in the second lateral face.

2. 发明授权

EP3521732B1 AIR CONDITIONER 有权
公开(公告)号：EP3521732B1
公开(公告)日：2020-08-12
申请号：EP17856127.0
申请日：2017-09-26
申请人： Daikin Industries, Ltd.
发明人： YAMADA, Takuro , HONDA, Masahiro , NAKAGAWA, Yuusuke , OKA, Yuusuke
IPC分类号： F25B41/06 , F25B1/00 , F25B13/00 , F25B49/02

3. 发明公开

EP3550215A1 METHOD FOR DETERMINING PIPE DIAMETER, DEVICE FOR DETERMINING PIPE DIAMETER, AND REFRIGERATING DEVICE 审中-实审转让
公开(公告)号：EP3550215A1
公开(公告)日：2019-10-09
申请号：EP17875459.4
申请日：2017-11-30
申请人： Daikin Industries, Ltd.
发明人： YAMADA, Takuro , NAKAGAWA, Yuusuke , HONDA, Masahiro
IPC分类号： F24F1/32 , F25B1/00
摘要： There are provided a pipe diameter determination method and a pipe diameter determination apparatus for a refrigeration apparatus, and a refrigeration apparatus with which a refrigerant with which the refrigeration apparatus is charged can be reduced. A pipe diameter determination method for determining a pipe diameter of a liquid-side connection pipe (5) of a refrigeration apparatus (1) capable of performing a cooling operation and a heating operation includes determining the pipe diameter of the liquid-side connection pipe (5) on the basis of a cooling capacity and a heating capacity provided by an outdoor unit (2) and an indoor unit (4a, 4b) that are installed.

4. 发明公开

EP3534084A1 AIR CONDITIONING DEVICE 有权
公开(公告)号：EP3534084A1
公开(公告)日：2019-09-04
申请号：EP17864402.7
申请日：2017-10-23
申请人： Daikin Industries, Ltd.
发明人： YAMADA, Takuro , NAKAGAWA, Yuusuke , OKA, Yuusuke
IPC分类号： F24F11/30
摘要： When refrigerant leakage occurs, a control unit (19) in an air conditioner (1) performs first shutoff control to open a liquid relay shutoff valve (71a, 71b, 71c, 71d) and close an indoor expansion valve (51a, 51b, 51c, 51d) and a gas relay shutoff valve (66a, 66b, 66c, 66d, 67a, 67b, 67c, 67d) on the basis of information from refrigerant leakage detection means (79a, 79b, 79c, 79d).

5. 发明公开

EP3521719A1 AIR CONDITIONER 有权
公开(公告)号：EP3521719A1
公开(公告)日：2019-08-07
申请号：EP17856134.6
申请日：2017-09-26
申请人： Daikin Industries, Ltd.
发明人： YAMADA, Takuro , NAKAGAWA, Yuusuke , OKA, Yuusuke , HONDA, Masahiro
IPC分类号： F24F11/30
摘要： Noise that is generated from an indoor unit is suppressed when performing two-phase transport of refrigerant by using a liquid-pressure-adjusting expansion valve in an air conditioner including an outdoor unit, a plurality of indoor units each including an indoor heat exchanger, a relay unit that switches the plurality of indoor heat exchangers so that the indoor heat exchangers individually function as an evaporator or radiator for refrigerant, and a liquid-refrigerant connection pipe and a gas-refrigerant connection pipe that connect the outdoor unit and the indoor unit via the relay unit.
The relay unit (4a, 4b, 4c, 4d) includes a relay expansion valve (71a, 71b, 71c, 71d) that further decompresses the refrigerant that has been decompressed by the liquid-pressure-adjusting expansion valve (26).

6. 发明公开

EP4105566A1 AIR CONDITIONING SYSTEM AND METHOD FOR CONSTRUCTING THE SAME 审中-实审转让
公开(公告)号：EP4105566A1
公开(公告)日：2022-12-21
申请号：EP22189336.5
申请日：2021-09-14
申请人： Daikin Industries, Ltd. , Daikin Europe N.V.
发明人： STEEN, David , CORNELIS, Kevin , DEGRANDE, Arne , NAKAGAWA, Yuusuke , SCOTTO DI LUZIO, Gennaro
IPC分类号： F24F3/06 , F24F11/36 , F24F11/89 , F24F13/10 , F24F13/20 , F24F140/40 , F24F11/00 , F24F11/62 , F25B13/00 , F25B49/00
摘要： Provided an air conditioning system (100m) comprising a compressor unit (111m), a heat exchanger unit (101m) for exchanging heat between air and first refrigerant,, an indoor unit (120m) for exchanging heat between air and second refrigerant which is subjected to a heat exchange with the first refrigerant, and a valve unit (200m). The heat exchanger unit is installed in a first space (931h), and the compressor unit and the valve unit in a second space (932h). The system further comprises a first leakage detector (501m) disposed in the second space a, and a ventilation control structure (730, 800m, 440) for switching the state of the second space from a first state to a second state when the detected concentration is equal to or greater than a first detection value threshold, in the second state a ventilation of the second space being promoted more than in the first state.

7. 发明公开

EP3971485A1 SAFETY SYSTEM AND AIR CONDITIONING SYSTEM 审中-实审转让
公开(公告)号：EP3971485A1
公开(公告)日：2022-03-23
申请号：EP21197533.9
申请日：2020-09-15
申请人： DAIKIN INDUSTRIES, LTD. , Daikin Europe N.V.
发明人： STEEN, David , CORNELIS, Kevin , DEGRANDE, Arne , NAKAGAWA, Yuusuke
IPC分类号： F24F3/06 , F24F11/36 , F24F11/89 , F24F13/10 , F24F140/40
摘要： Provided a safety system (700) comprising: a plurality of valve units (200) for a heat pump system, a connection structure (710), and a discharge structure (720, 730). Each valve unit has refrigerant pipe portions (311, 330) with control valves (364, 365), a casing (400) accommodating at least the valves, and a refrigerant leakage detector (500). The connection structure connects the internal spaces of the casings via openings (420, 430) of the casing. The discharge structure is connected to the connection structure or one of the casings and configured to discharge air from the internal space of the casing in which a refrigerant leakage has occurred. The discharge structure includes a shared duct (720) connected to the connection structure or one of the casings, and a ventilator (730) disposed to the shared duct.

8. 发明公开

EP3967939A1 AIR CONDITIONING SYSTEM AND METHOD FOR CONSTRUCTING THE SAME 有权转让
公开(公告)号：EP3967939A1
公开(公告)日：2022-03-16
申请号：EP21196536.3
申请日：2021-09-14
申请人： DAIKIN INDUSTRIES, LTD. , Daikin Europe N.V.
发明人： STEEN, David , CORNELIS, Kevin , DEGRANDE, Arne , NAKAGAWA, Yuusuke , SCOTTO DI LUZIO, Gennaro
IPC分类号： F24F3/06 , F24F11/36 , F24F11/89 , F24F13/10 , F24F13/20 , F24F140/40 , F24F11/00 , F24F11/62 , F25B13/00
摘要： Provided an air conditioning system (110h) comprising a compressor unit (111h) including a compressor (112h), a heat exchanger unit (101h) including an outdoor heat exchanger (102h), an indoor unit (120), and a valve unit (200h) including a liquid control valve (364) and a gas control valve (365). The heat exchanger unit is installed in a first space (931h), while the compressor unit and the valve unit are installed in a second space (932h). The system further comprises a first leakage detector disposed in the second space a, and a ventilation control structure that is configured to switch the state of the second space from a first state to a second state when the detected concentration of the first refrigerant is equal to or greater than a first detection value threshold, in the second state a ventilation of the second space being promoted more than in the first state.

9. 发明公开

EP3690352A1 REFRIGERATION DEVICE 审中-实审转让
公开(公告)号：EP3690352A1
公开(公告)日：2020-08-05
申请号：EP17927042.6
申请日：2017-09-29
申请人： Daikin Industries, Ltd.
发明人： YAMADA, Takuro , NAKAGAWA, Yuusuke , OKA, Yuusuke , HONDA, Masahiro
IPC分类号： F25B13/00 , F25B29/00 , F25B41/04 , F25B49/02
摘要： Provided is a refrigeration apparatus in which a refrigerant leak is reduced.
The refrigeration apparatus includes a heat source unit (10); a plurality of utilization units (30) connected in parallel to the heat source unit; a refrigerant-flow-path switching unit (40) that includes a plurality of first gas-side control valves (42) each of which switches a flow of refrigerant in a corresponding one of the utilization units and that individually switches a flow of refrigerant in each of the utilization units; a first gas-side connection pipe (52) that is disposed between the heat source unit and each of the first gas-side control valves and through which high-pressure gas refrigerant flows; a plurality of first gas-side branch pipes (521) each of which is included in the first gas-side connection pipe, communicates with a corresponding one of the utilization units, and has one of the first gas-side control valves disposed therein; and a blocking valve (65) that is disposed in the first gas-side connection pipe and blocks a flow of refrigerant. The first gas-side connection pipe includes a plurality of branch portions (BP2) connected to the first gas-side branch pipes, and the blocking valve is disposed between the heat source unit and each of the branch portions.

10. 发明公开

EP3521721A1 AIR CONDITIONER 有权
公开(公告)号：EP3521721A1
公开(公告)日：2019-08-07
申请号：EP17856494.4
申请日：2017-09-29
申请人： Daikin Industries, Ltd.
发明人： YAMADA, Takuro , NAKAGAWA, Yuusuke , HONDA, Masahiro , OKA, Yuusuke
IPC分类号： F24F11/30
摘要： An air conditioner (1) includes: liquid-side indoor expansion valves (51a, 51b) corresponding to a liquid side of respective indoor heat exchangers (52a, 52b); and gas-side indoor expansion valves (61a, 61b) corresponding to a gas side of the respective indoor heat exchangers (52a, 52b). In a case where both a heating-operation indoor heat exchanger and a heating-stopped indoor heat exchanger are present, the control unit (19) of the air conditioner (1) controls the liquid-side indoor expansion valve and the gas-side indoor expansion valve corresponding to the heating-stopped indoor heat exchanger such that an opening degree of the gas-side indoor expansion valve becomes smaller than an opening degree of the liquid-side indoor expansion valve.

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