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1. 发明授权

US09410715B2 Air conditioning apparatus 有权
标题翻译：空调设备
公开(公告)号：US09410715B2
公开(公告)日：2016-08-09
申请号：US14434683
申请日：2012-10-18
申请人： DAIKIN INDUSTRIES, LTD. , DAIKIN EUROPE N.V.
发明人： Masahiro Honda , Shinya Matsuoka , Hideyuki Nakagawa
IPC分类号： F24F11/02 , F25B13/00 , F24F5/00 , F24F11/00
CPC分类号： F24F11/02 , F24F5/0035 , F24F11/89 , F24F2140/20 , F25B13/00 , F25B2313/0233 , F25B2313/02741 , F25B2313/029 , F25B2313/0313 , F25B2313/0314 , F25B2600/19 , F25B2600/21 , F25B2700/1931 , F25B2700/1933 , F25B2700/2106 , F25B2700/21151 , F25B2700/21152
摘要： An air conditioning apparatus has a refrigerant circuit made up of plural indoor units connected to an outdoor unit, and the air conditioning apparatus has a capacity controlling part and a target refrigerant temperature mode setting part. The capacity controlling part controls the air conditioning capacity of the outdoor unit in such a way that the evaporation temperature of refrigerant in the refrigerant circuit becomes a target evaporation temperature, or in such a way that the condensation temperature of the refrigerant becomes a target condensation temperature. The target refrigerant temperature mode setting part is configured to seta target refrigerant temperature mode to either a target refrigerant temperature changing mode or a target refrigerant temperature fixing mode. The target refrigerant temperature changing mode changes the target evaporation temperature or the target condensation temperature, and the target refrigerant temperature fixing mode fixes the target evaporation temperature or the target condensation temperature.
摘要翻译：空调装置具有由连接到室外单元的多个室内单元构成的制冷剂回路，空调装置具有容量控制部和目标制冷剂温度模式设定部。容量控制部以这样的方式控制室外机的空调能力，使得制冷剂回路中的制冷剂的蒸发温度成为目标蒸发温度，或者使制冷剂的冷凝温度成为目标冷凝温度。目标制冷剂温度模式设定部将目标制冷剂温度模式设定为目标制冷剂温度变更模式或目标制冷剂温度定影模式。目标制冷剂温度变化模式改变目标蒸发温度或目标冷凝温度，目标制冷剂温度定影模式固定目标蒸发温度或目标冷凝温度。

2. 发明申请

US20150285530A1 AIR CONDITIONING APPARATUS 有权
标题翻译：空调设备
公开(公告)号：US20150285530A1
公开(公告)日：2015-10-08
申请号：US14434683
申请日：2012-10-18
申请人： DAIKIN INDUSTRIES, LTD. , DAIKIN EUROPE N.V.
发明人： Masahiro Honda , Shinya Matsuoka , Hideyuki Nakagawa
IPC分类号： F24F11/02 , F24F5/00
CPC分类号： F24F11/02 , F24F5/0035 , F24F11/89 , F24F2140/20 , F25B13/00 , F25B2313/0233 , F25B2313/02741 , F25B2313/029 , F25B2313/0313 , F25B2313/0314 , F25B2600/19 , F25B2600/21 , F25B2700/1931 , F25B2700/1933 , F25B2700/2106 , F25B2700/21151 , F25B2700/21152
摘要： An air conditioning apparatus has a refrigerant circuit configured as a result of plural indoor units being connected to an outdoor unit, and the air conditioning apparatus has a capacity controlling part and a target refrigerant temperature mode setting part. The capacity controlling part controls the air conditioning capacity of the outdoor unit in such a way that the evaporation temperature or the condensation temperature of refrigerant in the refrigerant circuit becomes a target evaporation temperature or a target condensation temperature. The target refrigerant temperature mode setting part is configured to set a target refrigerant temperature mode to either of a target refrigerant temperature changing mode that changes the target evaporation temperature or the target condensation temperature and a target refrigerant temperature fixing mode that fixes the target evaporation temperature or the target condensation temperature.
摘要翻译：空调装置具有由多个室内单元连接到室外单元而构成的制冷剂回路，空调装置具有容量控制部和目标制冷剂温度模式设定部。容量控制部以使制冷剂回路中的制冷剂的蒸发温度或冷凝温度成为目标蒸发温度或目标冷凝温度的方式来控制室外机的空调能力。目标制冷剂温度模式设定部被配置为将目标制冷剂温度模式设定为改变目标蒸发温度或目标冷凝温度的目标制冷剂温度变化模式和固定目标蒸发温度的目标制冷剂温度定影模式，目标冷凝温度。

3. 发明申请

US20150276255A1 AIR CONDITIONING APPARATUS 审中-公开
标题翻译：空调设备
公开(公告)号：US20150276255A1
公开(公告)日：2015-10-01
申请号：US14434688
申请日：2012-10-18
申请人： DAIKIN INDUSTRIES, LTD. , DAIKIN EUROPE N.V.
发明人： Masahiro Honda , Shinya Matsuoka
IPC分类号： F24F11/00
CPC分类号： F24F11/83 , F24F11/54 , F24F2140/20 , F25B13/00 , F25B2313/02742 , F25B2313/029
摘要： An air conditioning apparatus has a refrigerant circuit configured as a result of plural indoor units being connected to an outdoor unit, and the air conditioning apparatus has a capacity controlling part and a target refrigerant temperature changing part. The capacity controlling part controls the air conditioning capacity of the outdoor unit in such a way that the evaporation or condensation temperature of refrigerant in the refrigerant circuit becomes a target evaporation or condensation temperature. The target refrigerant temperature changing part performs slow changing control that changes the target evaporation or condensation temperature in accordance with temperature differences between room and set temperatures and, in a case where the temperature differences have exceeded a threshold temperature difference and the number of the indoor units in operation has increased, performs fast changing control that forcibly changes the target evaporation or condensation temperature to a fast tracking evaporation or condensation temperature.
摘要翻译：空调装置具有由多个室内单元连接到室外单元而构成的制冷剂回路，空调装置具有容量控制部和目标制冷剂温度变化部。容量控制部以使制冷剂回路中的制冷剂的蒸发或冷凝温度成为目标蒸发或冷凝温度的方式来控制室外机的空调能力。目标制冷剂温度变化部执行根据室内和设定温度之间的温度差来改变目标蒸发或冷凝温度的缓慢变化控制，并且在温差超过阈值温度差和室内单元数量的情况下在操作中已经增加，执行快速变化的控制，将目标蒸发或冷凝温度强制地改变到快速跟踪蒸发或冷凝温度。

4. 发明授权

US11268740B2 Refrigeration apparatus 有权
公开(公告)号：US11268740B2
公开(公告)日：2022-03-08
申请号：US16338257
申请日：2017-09-29
申请人： DAIKIN INDUSTRIES, LTD.
发明人： Takuro Yamada , Yuusuke Nakagawa , Yuusuke Oka , Masahiro Honda
IPC分类号： F25B13/00 , F25B41/20 , F25B49/02
摘要： An air conditioning system includes: outdoor and indoor heat exchangers; first, second, and third control valves, which block refrigerant flow when fully closed; and a pressure adjuster. The first and second control valves are disposed in a gas-side refrigerant flow path (GL) between the outdoor and indoor heat exchangers. The third control valve is disposed in a liquid-side refrigerant flow path (LL) between the outdoor and indoor heat exchangers. The pressure adjuster adjusts the pressure of refrigerant in an indoor-side refrigerant flow path (IL) between the first control valve and the second control valve or the third control valve and the indoor heat exchanger. The pressure adjuster includes a pressure adjusting valve that bypasses refrigerant in the indoor-side refrigerant flow path (IL) to an outdoor-side refrigerant flow path (OL) between the first control valve and the second control valve or the third control valve and the outdoor heat exchanger.

5. 发明授权

US10408484B2 Air-conditioning apparatus with a refrigerant leak sensor in an indoor unit 有权
公开(公告)号：US10408484B2
公开(公告)日：2019-09-10
申请号：US15562399
申请日：2016-03-28
申请人： DAIKIN INDUSTRIES, LTD.
发明人： Masahiro Honda , Shigeki Kamitani
IPC分类号： F24F11/36 , F25B49/02 , F24F11/89 , F24F11/52 , F25B49/00 , F24F110/50 , F25B13/00 , F24F11/74 , F24F11/76 , F24F11/77 , F24F110/10 , F24F140/00
摘要： An air-conditioning apparatus includes at least one indoor unit with intake and blow-out ports, a refrigerant gas sensor disposed in an air flow path inside the indoor unit; and a control device. The indoor unit has an indoor fan drawing indoor air in from the intake port and blowing conditioned air out from the blow-out port, an indoor temperature sensor detecting temperature of the indoor air, an indoor-side refrigerant circuit circulating a refrigerant having a greater specific gravity when gasified than air and producing conditioned air from the indoor air, and at least one refrigerant temperature sensor detecting refrigerant temperature in the refrigerant circuit. The control device drives the indoor fan in accordance with at least one of an operation mode and a detection value of the at least one refrigerant temperature sensor, and detects refrigerant leakage using the refrigerant gas sensor.

6. 发明授权

US11486619B2 Air-conditioning system or refrigerant branch unit 有权
公开(公告)号：US11486619B2
公开(公告)日：2022-11-01
申请号：US16644204
申请日：2018-08-29
申请人： Daikin Industries, LTD.
发明人： Takuro Yamada , Masahiro Honda
IPC分类号： F25B49/00 , F25B41/20 , F25B13/00 , F25B41/24
摘要： An air-conditioning system that performs a refrigeration cycle in a refrigerant circuit includes: an outdoor unit; a plurality of indoor units; a refrigerant connection pipe that connects the outdoor unit and the indoor units; and a first control valve disposed in the refrigerant connection pipe and that blocks a flow of refrigerant. The refrigerant connection pipe includes: a plurality of indoor-side pipes that each communicate with one of the indoor units; an outdoor-side pipe that communicates with two or more of the indoor-side pipes from an outdoor unit side; and a branch that connects the outdoor-side pipe and a group of two or more of the indoor-side pipes.

7. 发明授权

US11274866B2 Refrigeration apparatus with a refrigerant leakage detection and release mechanism 有权
公开(公告)号：US11274866B2
公开(公告)日：2022-03-15
申请号：US16623064
申请日：2018-08-03
申请人： Daikin Industries, LTD.
发明人： Takuro Yamada , Masahiro Honda , Tetsuya Shirasaki
IPC分类号： F25B49/02 , F25B13/00
摘要： An air conditioning system includes a refrigerant circuit including a use-side circuit, heat-source-side circuit and refrigerant release circuit, a refrigerant leakage detection unit in the use-side circuit, a heat-source-side control valve that enables, when in an opened state, the heat-source-side circuit to communicate with the refrigerant release circuit, a rupture disk that is disposed in the refrigerant release circuit and enables, when in a first state (an open state), the refrigerant release circuit to communicate with an external space to release refrigerant, and a controller. When no leakage of refrigerant in the use-side circuit is detected, the controller controls the heat-source-side control valve to a. closed state. When leakage of refrigerant, in the use-side circuit is detected by the refrigerant leakage detection unit, the controller switches the heat-source-side control valve to the opened state and causes the rupture disk to shift to the first state.

8. 发明授权

US10976090B2 Air conditioner 有权
公开(公告)号：US10976090B2
公开(公告)日：2021-04-13
申请号：US16338345
申请日：2017-09-29
申请人： DAIKIN INDUSTRIES, LTD.
发明人： Takuro Yamada , Yuusuke Nakagawa , Masahiro Honda , Yuusuke Oka
IPC分类号： F25B49/02 , F25B13/00 , F25B41/04 , F24F1/0007 , F25B1/00
摘要： An air conditioner includes: liquid-side indoor expansion valves corresponding to a liquid side of respective indoor heat exchangers; and gas-side indoor expansion valves corresponding to a gas side of the respective indoor heat exchangers. In a case where both a heating-operation indoor heat exchanger and a heating-stopped indoor heat exchanger are present, the controller of the air conditioner 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.

9. 发明授权

US10670282B2 Air conditioning apparatus 审中-公开
公开(公告)号：US10670282B2
公开(公告)日：2020-06-02
申请号：US16337825
申请日：2017-09-26
申请人： DAIKIN INDUSTRIES, LTD.
发明人： Takuro Yamada , Masahiro Honda , Yuusuke Nakagawa , Yuusuke Oka
IPC分类号： F25B41/06 , F24F3/052 , F25B13/00
摘要： To reduce noise coming from an indoor unit in an air conditioning apparatus that has an outdoor unit that has a compressor and an outdoor heat exchanger, the indoor unit that has an indoor heat exchanger, and a liquid refrigerant connection pipe and a gas refrigerant connection pipe that interconnect both units and in which a liquid pressure adjusting expansion valve that reduces a pressure of a refrigerant flowing through the liquid refrigerant connection pipe in such a way that the refrigerant is in a gas-liquid two-phase state is provided in an outdoor liquid refrigerant pipe that interconnects the liquid-side end of the outdoor heat exchanger and the liquid refrigerant connection pipe. An external expansion valve unit having an external expansion valve that further reduces the pressure of the refrigerant whose pressure has been reduced in the liquid pressure adjusting expansion valve is provided in the outdoor liquid refrigerant pipe.

10. 发明授权

US11248826B2 Refrigerant-amount determining method and refrigerant-amount determining device 有权
公开(公告)号：US11248826B2
公开(公告)日：2022-02-15
申请号：US16338221
申请日：2017-09-29
申请人： DAIKIN INDUSTRIES, LTD.
发明人： Takuro Yamada , Yuusuke Nakagawa , Masahiro Honda , Yuusuke Oka , Hiroki Sasayama
IPC分类号： F25B45/00 , F25B1/00 , F25B5/02 , F25B49/02
摘要： In a refrigeration apparatus including a refrigerant circuit in which a refrigerant in a gas-liquid two-phase state flows through a liquid-side connection pipe, a refrigerant-amount determining method and a refrigerant-amount determining device capable of grasping an appropriate refrigerant charging amount corresponding to the length of the connection pipe is provided. Provided is a refrigerant-amount determining method for a refrigerant to be charged to a refrigeration apparatus including a refrigerant circuit in which a compressor, an outdoor heat exchanger that functions as a condenser, an outdoor expansion valve, indoor heat exchangers that function as evaporators, a liquid-side connection pipe that feeds the refrigerant, which has passed through the outdoor heat exchanger and then has been decompressed by the outdoor expansion valve, to each of the indoor heat exchangers, and a gas-side connection pipe that feeds the refrigerant, which has passed through each of the indoor heat exchangers, to a suction side of the compressor, are connected to one another. The method determines a refrigerant amount of the refrigerant to be charged to the refrigerant circuit such that a refrigerant amount per unit length of the liquid-side connection pipe increases as a length of the liquid-side connection pipe is larger.

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