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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：US20210337705A1
公开(公告)日：2021-10-28
申请号：US16479630
申请日：2017-03-30
Applicant: NEC Corporation
Inventor： Arihiro MATSUNAGA , Koichi TODOROKI , Hisato SAKUMA , Minoru YOSHIKAWA
Abstract: The present invention provides a cooling system including a vaporizer (1) which is configured to absorb heat due to a liquid-phase refrigerant R being vaporized, a condenser (2) which is configured to discharge heat due to a refrigerant (R) in a gaseous phase state being liquefied, a resistance body (8) which is provided in a middle of a pipe passage (3) ranging from the vaporizer (1) to the condenser (2) and is configured to apply a resistance to the refrigerant (R), state detection sensors (9) which are provided in the pipe passage (3) on an upstream side and a downstream side of the resistance body (8) and are configured to detect a state of the refrigerant (R) flowing through each side inside the pipe passage (3), and a flow rate control means (C) which is configured to detect the presence of droplets in the refrigerant R flowing through the pipe passage (3) on the basis of a difference between detection values of the state detection sensors (9) which are detected on the upstream side and the downstream side of the resistance body (8), and controls a flow rate of the refrigerant (R) on the basis of detection results.
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3.发明申请公开(公告)号：US20190003776A1
公开(公告)日：2019-01-03
申请号：US16064519
申请日：2016-12-19
Applicant: NEC CORPORATION
Inventor： Arihiro MATSUNAGA , Masaki CHIBA , Masanori SATO , Koichi TODOROKI , Mizuki WADA , Minoru YOSHIKAWA
IPC: F28D15/02
Abstract: It is impossible, in a phase-change cooling apparatus in which a refrigerant flows in a gas-liquid two-phase state, to enhance cooling capacity sufficiently even though a heat-radiating region is enlarged; therefore, a heat radiation apparatus according to an exemplary aspect of the present invention includes gas-phase refrigerant diffusion means into which a refrigerant in a gas-liquid two-phase state flowing, the gas-phase refrigerant diffusion means being filled with a gas-phase refrigerant included in the refrigerant in the gas-liquid two-phase state; heat-radiating means including a first header, a second header, and a plurality of heat-radiating pipes connecting the first header to the second header, the gas-phase refrigerant flowing through the plurality of heat-radiating pipes; and gas-phase-side connection means for connecting the gas-phase refrigerant diffusion means to the first header, the gas-phase refrigerant flowing in the gas-phase-side connection means.
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公开(公告)号：US20230023287A1
公开(公告)日：2023-01-26
申请号：US17791077
申请日：2020-01-16
Applicant: NEC Corporation
Inventor： Nilmal Singh RAJPUT , Koichi TODOROKI , Takafumi NATSUMEDA , Mahiro HACHIYA , Minoru YOSHIKAWA
IPC: H05K7/20
Abstract: A cooling system (100) has a housing (101), a heat exchanger (110) and an air distribution controller (120). The housing (101) including an inlet (102) for receiving air exhausted from the server module and an outlet (103) for providing air to the server module. The heat exchanger (110) is mounted between the inlet (102) and the outlet (103), the heat exchanger (110) is configured that a refrigerant (111) contained in the heat exchanger (110) exchanges heat with air passing through the heat exchanger (110). The heat exchanger (110) accepts variation of the refrigerant liquid level. The air distribution controller (120) is mounted in an inlet side of the heat exchanger (110). The air distribution controller (120) has a movable plate which allows an airflow profile from the inlet to the heat exchanger (110) redirected. The air distribution controller (120) controls the airflow profile depending on the liquid level.
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公开(公告)号：US20210010763A1
公开(公告)日：2021-01-14
申请号：US16923615
申请日：2020-07-08
Applicant: NEC Corporation
Inventor： Koichi TODOROKI , Minoru YOSHIKAWA , Masaki CHIBA
Abstract: A heat exchanger has a structure in which a heat exchanger main body through which coolant flows is obliquely installed in a box-shaped enclosure, the heat exchanger main body is constituted by a header pipe and a plurality of heat transfer pipes connected to the header pipe and disposed at predetermined intervals along a surface of a part of the header pipe, the header pipe has an area adjacent to an inner surface of the enclosure, and a seal section is provided between the inner surface of the enclosure and the area of the header pipe adjacent to the enclosure.
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Patent Agency Ranking
公开(公告)号：US20200214173A1
公开(公告)日：2020-07-02
申请号：US16631323
申请日：2018-07-13
Applicant: NEC CORPORATION
Inventor： Masanori SATO , Koichi TODOROKI , Minoru YOSHIKAWA
Abstract: A phase-change cooling apparatus according to an exemplary aspect of the present invention includes heat receiving means; refrigerant liquid driving means for circulating the refrigerant liquid; a first refrigerant flow path in which the refrigerant liquid flowing away from the refrigerant liquid driving means circulates through the heat receiving means and the heat radiating means; a second refrigerant flow path of a flow path shortening the first refrigerant flow path in such a way that a branched refrigerant liquid being at least part of the refrigerant liquid flowing away from the refrigerant liquid driving means toward the heat receiving means circulates without passing through the heat receiving means and the heat radiating means; and control means for controlling a flow rate of a heat-receiving-side refrigerant liquid being a refrigerant liquid flowing into the heat receiving means based on a flow rate of the branched refrigerant liquid.
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公开(公告)号：US20240142122A1
公开(公告)日：2024-05-02
申请号：US18279705
申请日：2022-03-02
Applicant: NEC Corporation
Inventor： Yoshinori MIYAMOTO , Minoru YOSHIKAWA , Koichi TODOROKI
CPC classification number: F24F7/06 , F24F13/10 , F24F2110/10
Abstract: The cooling system includes a duct that draws in air that is drawn in from an intake side of a cooling target, which is disposed in a room adjusted to a predetermined temperature, that absorbs the heat of the cooling target, and that is exhausted from an exhaust side of the cooling target, and that guides the air to the intake side; a cooler that is provided in the duct and that cools the air; a monitoring device that monitors a cooling state of at least one of the cooling target and the cooler; and a duct adjustment device that operates the duct to guide the air in the duct in a direction different from a direction toward the intake side when the monitoring device detects an abnormality in the cooling state.
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公开(公告)号：US20230221084A1
公开(公告)日：2023-07-13
申请号：US18116622
申请日：2023-03-02
Applicant: NEC Corporation
Inventor： Koichi TODOROKI , Minoru YOSHIKAWA , Masaki CHIBA
IPC: F28F9/02 , F28F1/10 , H05K7/20 , F24F13/30 , F24F1/0063 , F24F1/0323
CPC classification number: F28F9/02 , F28F1/10 , H05K7/208 , F24F13/30 , F24F1/0063 , F24F1/0323
Abstract: A heat exchanger has a structure in which a heat exchanger main body through which coolant flows is obliquely installed in a box-shaped enclosure, the heat exchanger main body is constituted by a header pipe and a plurality of heat transfer pipes connected to the header pipe and disposed at predetermined intervals along a surface of a part of the header pipe, the header pipe has an area adjacent to an inner surface of the enclosure, and a seal section is provided between the inner surface of the enclosure and the area of the header pipe adjacent to the enclosure.
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公开(公告)号：US20220141993A1
公开(公告)日：2022-05-05
申请号：US17505805
申请日：2021-10-20
Applicant: NEC Corporation
Inventor： Kenji KOBAYASHI , Kunihiko ISHIHARA , Koichi TODOROKI , Yoshinori MIYAMOTO , Minoru YOSHIKAWA
IPC: H05K7/20
Abstract: A cooling apparatus includes a duct provided above a cooling target and configured to guide an air discharged after absorbing heat generated inside the cooling target to the cooling target, a cooler provided in the duct and configured to cool the air flowing in the duct, and an adjusting mechanism provided downstream of the cooler and configured to adjust the air discharged from the duct to the cooling target, and the duct receives the air discharged from one side of the cooling target and directed upward, guides the air to another side of the cooling target, and discharges the air downward on the other side, and the adjusting mechanism changes a position of an opening at a discharge port of the duct.
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公开(公告)号：US20210003327A1
公开(公告)日：2021-01-07
申请号：US16982790
申请日：2019-03-20
Applicant: NEC Corporation
Inventor： Koichi TODOROKI , Minoru YOSHIKAWA , Kunihiko ISHIHARA , Masaki CHIBA , Yoshinori MIYAMOTO , Takafumi NATSUMEDA , Nirmal Singh RAJPUT
IPC: F25B41/00
Abstract: In order to efficiently distribute a heat medium at a low heat medium pressure, a heat exchange apparatus includes a heat exchange pipe 2 configured to accommodate a heat medium L to be evaporated by heat absorption from a gas to be cooled, the heat exchange pipe being disposed in an inclined state, a supply pipe 1 configured to supply the heat medium L in a liquid-phase state, the supply pipe being placed in a vicinity of a lower part of the heat exchange pipe 2, a discharge pipe 3 configured to receive a heat medium L to be evaporated in the heat exchange pipe 2 and discharged from an upper part of the heat exchange pipe, and a connecting pipe 4 placed, directing downward, between an upper part of the heat exchange pipe 2 and the discharge pipe 3.
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