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公开(公告)号：US20240077238A1
公开(公告)日：2024-03-07
申请号：US18273777
申请日：2021-02-02
发明人： Yuki MIZUNO , Soshi IKEDA , Kosuke MIYAWAKI , Jun NISHIO , Yuji MOTOMURA , Hiroki WASHIYAMA
CPC分类号： F25B49/02 , F25B9/002 , F25B41/31 , F25B47/006 , F25B2700/21174
摘要： A refrigeration cycle device with a main circuit, a bypass circuit and a supercooling heat exchanger further includes: a controller to control an opening degree of the bypass expansion valve; a first sensor to detect a temperature at the refrigerant inflow side of the evaporator; and a second sensor to detect a pressure of the non-azeotropic mixed refrigerant flowing from the evaporator, wherein the controller controls the opening degree of the bypass expansion valve using temperatures of the evaporator, that is, the temperature at the refrigerant inflow side and a saturated gas temperature of the non-azeotropic mixed refrigerant calculated from the pressure so as to adjust a flow rate of the non-azeotropic mixed refrigerant flowing into the evaporator, to eliminate the temperature difference in the evaporator for suppressing uneven frost formation on the evaporator, and thus to prevent heat exchange performance from degrading.
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公开(公告)号：US20220163239A1
公开(公告)日：2022-05-26
申请号：US17441295
申请日：2019-05-22
发明人： Jun NISHIO , Soshi IKEDA , Naofumi TAKENAKA , Yuji MOTOMURA , Katsuhiro ISHIMURA
摘要： An air-conditioning apparatus includes: a heat-source-side device that heats or cools a heat medium; a pump that sucks and transfers the heat medium; use-side heat exchangers; a heat medium circuit; flow rate control devices; indoor-side pressure sensors; a pump inlet-side pressure sensor and/or a pump outlet-side pressure sensor; a flow rate detection device that detects a pump flow rate; and a controller that performs a first operation in which the flow rate control devices are individually opened or closed and data regarding a flow passage resistance at a path related to each of the heat exchangers is obtained, and a second operation in which heat is supplied to indoor air, and calculates calculate flow rates of the heat medium that flows through the heat exchangers in the second operation, from pump flow rates and pressures detected by the pressure sensors in the first and second operations.
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公开(公告)号：US20220090815A1
公开(公告)日：2022-03-24
申请号：US17425323
申请日：2019-02-27
发明人： Kazuya HONDA , Soshi IKEDA , Jun NISHIO , Yuki MIZUNO , Katsuhiro ISHIMURA , Yuji MOTOMURA , Kosuke TANAKA
摘要： An air-conditioning apparatus includes: a heat source unit that generates a heating energy or a cooling energy that is transferred to refrigerant; a heat-use unit that causes the refrigerant to transfer the heating energy or the cooling energy to a heat load through heat exchange between the refrigerant and the heat load; a plurality of return pipes arranged parallel to each other and connecting the heat source unit and the heat-use unit to allow the refrigerant to flow therein from the heat-use unit to the heat source unit; an opening and closing device provided at at least one of the return pipes to control a flow rate of refrigerant; and a controller that opens the opening and closing device in a cooling operation, and closes the opening and closing device in a heating operation.
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公开(公告)号：US20220373233A1
公开(公告)日：2022-11-24
申请号：US17775313
申请日：2020-01-08
发明人： Soshi IKEDA , Jun NISHIO , Naofumi TAKENAKA , Katsuhiro ISHIMURA , Yuji MOTOMURA
摘要： An air-conditioning apparatus includes: a heat source-side system having an intermediate heat exchanger that causes heat exchange to be performed between a heat source-side heat medium and a use-side heat medium, causes the heat source-side heat medium to receive or transfer heat, and causes the use-side heat medium to undergo a phase change; and a use-side cycle circuit formed of pipes connecting, to one another, the intermediate heat exchanger, a pump that sucks and delivers the use-side heat medium in a liquid state, a use-side heat exchanger that heats or cools air in an air-conditioning target space due to heat exchange causing a change in phase of the use-side heat medium, and a pressure-reducing device that reduces a pressure of the use-side heat medium that passes through the use-side heat exchanger, the use-side cycle circuit causing the use-side heat medium to circulate through the use-side cycle circuit.
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公开(公告)号：US20200271344A1
公开(公告)日：2020-08-27
申请号：US16639893
申请日：2017-10-05
发明人： Soshi IKEDA , Jun NISHIO , Katsuhiro ISHIMURA , Kohei OGURA , Koji YAMASHITA
摘要： An air-conditioning apparatus includes a refrigeration circuit, a first shut-off device provided at a pipe connecting a heat-source-side heat exchanger and an expansion device, a refrigerant leak detection device, and a controller. The controller controls a flow switching device to switch a connection state between a first connection state in which a discharge side of a compressor is connected to the heat-source-side heat exchanger, and a second connection state in which a suction side of the compressor is connected to the heat-source-side heat exchanger via an accumulator. When a refrigerant leak is detected, the controller performs a refrigerant retrieval operation and a refrigerant transfer operation.
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公开(公告)号：US20200248943A1
公开(公告)日：2020-08-06
申请号：US16639946
申请日：2017-10-05
发明人： Jun NISHIO , Soshi IKEDA , Katsuhiro ISHIMURA , Kohei OGURA , Koji YAMASHITA
摘要： An air-conditioning apparatus includes a refrigeration circuit, a first shut-off device, a leakage detection device, and a controller configured to perform a refrigerant recovery operation in a case where refrigerant leakage is detected. At the time of the refrigerant recovery operation, the controller performs control to perform a first operation of recovering refrigerant from a load-side heat exchanger into an accumulator and a heat-source-side heat exchanger, and a second operation of moving refrigerant in the heat-source-side heat exchanger to the accumulator. In the first operation, the first shut-off device is closed, a flow passage switching device is brought into a first connection state, and a compressor is driven. The second operation is performed after the first operation, and in the second operation, the connection state of the flow passage switching device is switched to a second connection state in a state where the compressor is being operated.
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公开(公告)号：US20170167761A1
公开(公告)日：2017-06-15
申请号：US15117103
申请日：2015-02-16
CPC分类号： F25B13/00 , F25B31/006 , F25B41/04 , F25B41/043 , F25B49/02 , F25B2313/006 , F25B2313/021 , F25B2313/0231 , F25B2313/0233 , F25B2313/0272 , F25B2313/02732 , F25B2313/02741 , F25B2313/0311 , F25B2313/0314 , F25B2400/05 , F25B2400/13 , F25B2400/23 , F25B2500/08 , F25B2600/0261 , F25B2600/0271 , F25B2600/2501 , F25B2700/2106 , F25B2700/21152
摘要： An air-conditioning apparatus includes a bypass pipe that has one end connected to the discharge side of a compressor and through which refrigerant exiting the compressor flows, an auxiliary heat exchanger that is connected to the other end of the bypass pipe and the suction part of the compressor, and cools refrigerant flowing through the bypass pipe and supplies the cooled refrigerant to the suction part of the compressor, and a flow regulating unit that is provided on the refrigerant outlet side of the auxiliary heat exchanger, and regulates the flow rate of refrigerant routed into the suction part of the compressor from the auxiliary heat exchanger.
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公开(公告)号：US20150308701A1
公开(公告)日：2015-10-29
申请号：US14648394
申请日：2014-02-18
发明人： Koji YAMASHITA , Katsuhiro ISHIMURA , Takeshi HATOMURA , Soshi IKEDA , Shinichi WAKAMOTO , Naofumi TAKENAKA
IPC分类号： F24F5/00
CPC分类号： F24F5/001 , F25B9/006 , F25B13/00 , F25B47/022 , F25B49/022 , F25B2313/005 , F25B2313/006 , F25B2313/0233 , F25B2313/02741 , F25B2313/0314 , F25B2400/13 , F25B2600/0271 , F25B2600/2509
摘要： An air-conditioning apparatus includes a refrigerant circuit formed by connecting pipes, a compressor including a compression chamber and an injection port through which refrigerant is introduced into the compression chamber, a first heat exchanger, a subcooling heat exchanger that includes a first flow passage and a second flow passage and exchanges heat between refrigerant flowing in the first flow passage and refrigerant flowing in the second flow passage to subcool the refrigerant flowing in the first flow passage, a first expansion device, a second heat exchanger, and an accumulator In addition, a first bypass pipe connects the second flow passage of the subcooling heat exchanger with a segment of the pipes, positioned on a refrigerant inflow side of the accumulator; an expansion device to adjust a flow rate of the refrigerant flowing in the first bypass pipe; a second bypass pipe that connects a segment of the pipes with the injection port, the segment being positioned between the first heat exchanger and the second heat exchanger; and an expansion device to adjust a flow rate of the refrigerant flowing in the second bypass pipe.
摘要翻译： 一种空气调节装置，包括：连接管形成的制冷剂回路，包括压缩室的压缩机和向所述压缩室引入制冷剂的喷射口，第一热交换器，包括第一流路的过冷却热交换器， 第二流路，在第一流路中流动的制冷剂与在第二流路中流动的制冷剂之间进行热交换，使在第一流路中流动的制冷剂，第一膨胀装置，第二热交换器和蓄电池的过冷却。另外， 第一旁通管将过冷却热交换器的第二流路与位于蓄压器的制冷剂流入侧的管的一段连接; 膨胀装置，用于调节在第一旁通管中流动的制冷剂的流量; 第二旁通管，其将所述管的一段与所述注入口连接，所述段位于所述第一热交换器和所述第二热交换器之间; 以及用于调节在第二旁通管中流动的制冷剂的流量的膨胀装置。
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公开(公告)号：US20220107123A1
公开(公告)日：2022-04-07
申请号：US17428278
申请日：2019-03-25
发明人： Shohei ISHIMURA , Soshi IKEDA , Kazuya WATANABE , Hideto NAKAO , Masakazu KONDO , Yasuhide HAYAMARU , Yusuke TASHIRO , Masakazu SATO , Atsushi KAWASHIMA
摘要： An air-conditioning apparatus includes a main circuit in which a compressor, a flow switching device, an indoor heat exchanger, a pressure reducing device, and a plurality of parallel heat exchangers connected in parallel with each other are connected by pipes, a bypass pipe, a flow control device provided to the bypass pipe and configured to adjust a flow rate of refrigerant flowing through the bypass pipe, an evaporating pressure sensor configured to measure an evaporating pressure of the refrigerant, and a controller. The air-conditioning apparatus is configured to operate in a normal heating operation mode and a heating-defrosting operation mode. When an operation associated with the normal heating operation mode is switched to an operation associated with the heating-defrosting operation mode, the controller adjusts an opening degree of the flow control device using the evaporating pressure in the parallel heat exchanger and a driving frequency of the compressor.
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公开(公告)号：US20200284476A1
公开(公告)日：2020-09-10
申请号：US16488889
申请日：2017-04-24
发明人： Jun NISHIO , Naofumi TAKENAKA , Soshi IKEDA , Raito KAWAMURA , Hideto NAKAO , Katsuhiro ISHIMURA
摘要： A compressor of an air-conditioning device includes a scroll mechanism unit having a fixed scroll and an orbiting scroll that cooperates with the fixed scroll to compress refrigerant; an electric motion unit that provides revolution movement to the orbiting scroll; a first space portion provided between the scroll mechanism unit and the electric motion unit; an annular second space portion provided in a circumference of the scroll mechanism unit in a radial direction; a suction pipe connected to the first space portion, from which the refrigerant is sucked into the compressor; a communication path provided between the first space portion and the second space portion, to guide, to the second space portion, the refrigerant sucked from the suction pipe to the first space portion; and a discharge pipe that discharges, to outside of the compressor, the refrigerant that flows from the second space portion into the scroll mechanism unit and is compressed, and a part of the refrigerant between the first expansion valve and the second expansion valve is injected simultaneously to the first space portion and the second space portion.
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