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公开(公告)号：US20210278884A1
公开(公告)日：2021-09-09
申请号：US16498131
申请日：2017-03-29
Applicant: NEC CORPORATION
Inventor： Yoshinori MIYAMOTO , Manussanun BURANACHOKPHAISAN , Minoru YOSHIKAWA
IPC: G06F1/20 , G05B19/4155
Abstract: A management device includes: storage unit which stores a known intake air temperature of a heating element, and a heat transfer characteristic of a cooling device; heat extraction amount calculation unit which calculates a heat extraction amount of the cooling device, by use of the refrigerant information input by the input means, and a cooling capacity of the refrigerant; and air volume calculation unit which calculates an air volume of air supplied to the cooling device, by applying the heat extraction amount to air volume dependence of the heat extraction amount, being derived by use of air volume dependence of a difference temperature between a temperature of the refrigerant and a temperature of exhaust air from the heating element, and the heat transfer characteristic, the air volume dependence of the difference temperature being derived by use of the intake air temperature, the power consumption, and the refrigerant information.
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公开(公告)号：US20210092876A1
公开(公告)日：2021-03-25
申请号：US16772447
申请日：2018-12-17
Applicant: NEC Corporation
Inventor： Koichi TODOROKI , Minoru YOSHIKAWA , Kunihiko ISHIHARA , Masaki CHIBA
Abstract: The present invention provides a local air conditioner. In a local air conditioner system provided with a plurality of local air conditioners, an increase in the number of local air conditioners is problematic. Thus, the local air conditioner of the present invention comprising: a heat exchanger; a first main flow pipe; a second main flow pipe; a first branch pipe that connects the heat exchanger and the first main flow pipe; and a second branch pipe that connects the heat exchanger and the second main flow pipe, wherein the first main flow pipe is provided with a first connection structure on both end portions and the second main flow pipe is provided with a second connection structure on both end portions.
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公开(公告)号：US20200292221A1
公开(公告)日：2020-09-17
申请号：US16892770
申请日：2020-06-04
Applicant: NEC CORPORATION
Inventor： Hisato SAKUMA , Minoru YOSHIKAWA , Masaki CHIBA
Abstract: A phase-change cooling system including: an evaporator holding a refrigerant liquid receiving heat from a heat generating source; a condenser releasing heat of a refrigerant vapor generated by vaporization of the refrigerant liquid at the evaporator and generating the refrigerant liquid; refrigerant liquid driving unit circulating the refrigerant liquid; a first piping unit for connecting the evaporator and the condenser; a second piping unit connecting the condenser and the refrigerant liquid driving unit; a third piping unit connecting the refrigerant liquid driving unit and the evaporator; and a fourth piping unit having one end connected to the first piping unit at a first connection point and another end connected to the second piping unit at a second connection point; a refrigerant storage unit storing the refrigerant liquid, the refrigerant storage unit being provided within a flow channel formed with the second piping unit.
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公开(公告)号：US20180363968A1
公开(公告)日：2018-12-20
申请号：US16060994
申请日：2016-12-16
Applicant: NEC Corporation
Inventor： Minoru YOSHIKAWA , Hisato SAKUMA , Masaki CHIBA
Abstract: In a phase-change cooling apparatus including an indoor unit and an outdoor unit, a configuration to prevent dew condensation in the indoor unit causes the cooling performance to decrease; therefore, a refrigerant circulating apparatus according to an exemplary aspect of the present invention includes refrigerant-liquid thermal equilibrium means for mixing a first refrigerant liquid with a second refrigerant liquid and sending a reflux refrigerant liquid composed of the first refrigerant liquid and the second refrigerant liquid, the first refrigerant liquid being a liquid-phase refrigerant included in a gas-liquid two-phase refrigerant flowing in from heat receiving means, the second refrigerant liquid arising due to the gas-liquid two-phase refrigerant cooled by heat radiating means; a refrigerant passage configured for the gas-liquid two-phase refrigerant and the reflux refrigerant liquid to circulate between the heat receiving means and the refrigerant-liquid thermal equilibrium means; refrigerant-liquid reflux means for refluxing the reflux refrigerant liquid to the heat receiving means through the refrigerant passage; and refrigerant-liquid flow control means for controlling a flow rate of the reflux refrigerant liquid.
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公开(公告)号：US20170311485A1
公开(公告)日：2017-10-26
申请号：US15514081
申请日：2015-09-15
Applicant: NEC Corporation
Inventor： Minoru YOSHIKAWA , Akira SHOUJIGUCHI , Masaki CHIBA , Arihiro MATSUNAGA , Masanori SATO
CPC classification number: H05K7/20663 , B23P15/26 , F28D15/0241 , F28D15/0266 , G06F1/20 , H05K7/20809
Abstract: It is impossible to avoid the increase in device cost and maintenance cost in order to cool a heat source efficiently using a natural-circulation type phase-change cooling device; therefore, a cooling device according to an exemplary aspect of the present invention includes a heat receiving unit for receiving heat; a condensing unit for releasing heat; and a refrigerant intermediary unit for connecting the heat receiving unit with the condensing unit, and transporting refrigerant circulating between the heat receiving unit and the condensing unit, wherein the refrigerant intermediary unit includes a refrigerant retaining unit for retaining the refrigerant, a primary tube connecting the refrigerant retaining unit with the condensing unit, and a secondary tube connecting the refrigerant retaining unit with the heat receiving unit and including a bendable tube.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20170303432A1
公开(公告)日：2017-10-19
申请号：US15514067
申请日：2015-09-15
Applicant: NEC Corporation
Inventor： Arihiro MATSUNAGA , Masanori SATO , Akira SHOUJIGUCHI , Masaki CHIBA , Minoru YOSHIKAWA
CPC classification number: H05K7/20327 , B01D19/00 , F25B41/00 , F25B43/00 , F28D15/0258 , F28D15/0266 , F28D15/043 , H01L23/427 , H05K7/20 , H05K7/20309 , H05K7/20318
Abstract: If a gas-liquid separation structure is introduced into a phase-change cooling device to prevent the cooling performance from decreasing, manufacturing costs increase; therefore, a refrigerant intermediary device according to an exemplary aspect of the present invention includes a refrigerant container configured to contain refrigerant; a first inlet, provided for an outer periphery of the refrigerant container, through which a vapor-phase refrigerant and a first liquid-phase refrigerant flowing in; a first outlet, provided for the outer periphery of the refrigerant container, through which the vapor-phase refrigerant flowing out; a second inlet, provided for the outer periphery of the refrigerant container, through which a second liquid-phase refrigerant flowing in; and a second outlet, provided for the outer periphery of the refrigerant container, through which the first liquid-phase refrigerant and the second liquid-phase refrigerant flowing.
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公开(公告)号：US20170280590A1
公开(公告)日：2017-09-28
申请号：US15506513
申请日：2015-08-19
Applicant: NEC Corporation
Inventor： Masaki CHIBA , Minoru YOSHIKAWA , Akira SHOUJIGUCHI , Arihiro MATSUNAGA , Masanori SATO
CPC classification number: H05K7/20327 , F28D15/0266 , F28D15/0275 , H05K7/20318 , H05K7/20827
Abstract: In a natural-circulation type phase-change cooling device, the cooling performance is degraded if the number of heat sources to be cooled increases; therefore, a phase-change cooling device according to an exemplary aspect of the present invention includes a plurality of heat receiving units for respectively holding refrigerant receiving heat from a plurality of heat sources; a condensing unit for generating refrigerant liquid by condensing and liquefying refrigerant vapor of the refrigerant evaporated in the heat receiving units; a refrigerant vapor transport structure configured to connect the heat receiving units to the condensing unit and transport the refrigerant vapor; a refrigerant liquid transport structure configured to connect the heat receiving units to the condensing unit and transport the refrigerant liquid; wherein the refrigerant vapor transport structure includes a plurality of sub-vapor-pipes respectively connected to the plurality of heat receiving units, a vapor joining portion connected to the plurality of sub-vapor-pipes, with the refrigerant vapor meeting, and a main-vapor-pipe connecting the vapor joining portion to the condensing unit.
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8.发明申请COOLING SYSTEM AND METHOD FOR CONTROLLING REFRIGERANT SUPPLY VOLUME IN COOLING SYSTEM 审中-公开用于控制冷却系统中的制冷剂供应量的冷却系统和方法公开(公告)号：US20160174417A1
公开(公告)日：2016-06-16
申请号：US14903205
申请日：2014-07-10
Applicant: NEC CORPORATION
Inventor： Mahiro HACHIYA , Minoru YOSHIKAWA , Hitoshi SAKAMOTO , Akira SHOUJIGUCHI , Masaki CHIBA , Kenichi INABA , Arihiro MATSUNAGA
IPC: H05K7/20
CPC classification number: H05K7/20836 , F28D15/0266 , F28D15/06 , H05K7/20736 , H05K7/208
Abstract: A control mechanism becomes complex when an optimum volume of refrigerant is stably supplied to a plurality of objects to be cooled that have differing heat generation values. The present invention is a cooling system which comprises a first refrigerant tank that stores a liquid-phase refrigerant, a plurality of evaporators that gasify the liquid-phase refrigerant supplied from the first refrigerant tank, a condenser that liquefies the gas-phase refrigerant that was gasified by the evaporators, a vapor pipe that connects the evaporators and the condenser and in which the gas-phase refrigerant flows, and a liquid pipe that connects the condenser and the first refrigerant tank and connects the first refrigerant tank and the plurality of evaporators and in which the liquid-phase refrigerant flows, wherein the condenser is located higher than the plurality of evaporators, and the first refrigerant tank is located lower than the condenser.
Abstract translation: 当将制冷剂的最佳体积稳定地供给到具有不同发热量的待冷却对象物时，控制机构变得复杂。 本发明是一种冷却系统，其包括储存液相制冷剂的第一制冷剂罐，使从第一制冷剂罐供给的液相制冷剂气化的多个蒸发器，将液化制冷剂液化的冷凝器， 由蒸发器气化，将蒸发器和冷凝器连接并且其中气相制冷剂流动的蒸汽管和连接冷凝器和第一制冷剂罐并连接第一制冷剂罐和多个蒸发器的液体管和 其中液相制冷剂流动，其中冷凝器位于比多个蒸发器高的位置，并且第一制冷剂罐位于比冷凝器低的位置。
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公开(公告)号：US20220192057A1
公开(公告)日：2022-06-16
申请号：US17603111
申请日：2020-04-13
Applicant: NEC Corporation
Inventor： Koichi TODOROKI , Minoru YOSHIKAWA , Kunihiko ISHIHARA , Masaki CHIBA , Yoshinori MIYAMOTO , Takafumi NATSUMEDA , Nirmal Singh RAJPUT
Abstract: A local cooler includes: a housing formed into a box shape; a heat exchanger provided along a slope extending upward to a rear portion from a lower position located on the front side of the housing; a first intake/exhaust port provided on a front surface of the housing; a second intake/exhaust port provided on a bottom surface of the housing; third intake/exhaust ports provided at a plurality of locations among side surfaces, upper surface and rear surface of the housing; and a closing plate capable of selectively shielding these intake/exhaust ports.
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公开(公告)号：US20220154988A1
公开(公告)日：2022-05-19
申请号：US17439473
申请日：2020-03-06
Applicant: NEC Corporation
Inventor： Takafumi NATSUMEDA , Masaki CHIBA , Koichi TODOROKI , Minoru YOSHIKAWA
Abstract: A liquid separator including a cylindrical closed container in which a refrigerant is stored, a refrigerant inflow pipe that allows the refrigerant to flow into the closed container, and a refrigerant outflow pipe that allows the vapor-phase refrigerant in a space inside the closed container to flow out, in which the refrigerant inflow pipe and the refrigerant outflow pipe are each connected from the upper part of the closed container toward the inside thereof, and the closed container has a short cylindrical shape in which the height is smaller relative to the diameter.
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