MOTOR HAVING MULTIPLE COOLING FLOW CHANNELS
    1.
    发明公开

    公开(公告)号:US20230198340A1

    公开(公告)日:2023-06-22

    申请号:US18061487

    申请日:2022-12-05

    CPC classification number: H02K9/193 H02K1/20 H02K1/32 H02K5/20

    Abstract: A motor having multiple cooling flow channels, includes a housing, a stator, and a rotor. The stator comprises a winding. The housing comprises a cooling liquid inlet, an arc-shaped flow channel, and a cooling liquid outlet; the arc-shaped flow channel is defined around the housing and connected to the stator core; the rotor comprises a rotor flow channel; both the rotor flow channel and the arc-shaped flow channel are communicated with the cooling liquid inlet and outlet; and the rotor flow channel and the arc-shaped flow channel respectively correspond to two ends of the winding. A cooling liquid enters the arc-shaped flow channel for cooling the housing and a stator core of the motor, and enters the rotor flow channel for cooling the rotor. The cooling liquid flows through the rotor flow channel and the arc-shaped flow channel for respectively cooling the ends of the winding.

    OUTER FINNED TUBE WITH MIXED-WETTABILITY SURFACE AND MANUFACTURING METHOD THEREOF

    公开(公告)号:US20210348854A1

    公开(公告)日:2021-11-11

    申请号:US17170849

    申请日:2021-02-08

    Abstract: An outer finned tube includes a tube body, an outer wall of the tube body is provided with outer tins spirally arranged in an extension direction of the tube body; grid fins are arranged between two adjacent spiral parts of the outer fins correspondingly; two ends of each grid fin are connected to the two adjacent spiral parts of the corresponding outer fin respectively; a gap is kept between each grid fin and the outer wall of the tube body; and the plurality of grid fins are spaced in the extension direction of the tube body. An enhancing cavity is formed in an area defined by the outer wall of the tube body, inner walls of the grid fins and the outer tins in an encircling way, which can form a larger degree of superheat, provides a nucleation point for a boiling/condensation process and improves a heat exchange performance.

    ATTITUDE ADJUSTMENT APPARATUS FOR SELF-PROPELLED BIO-INSPIRED ROBOTIC FISH

    公开(公告)号:US20230013643A1

    公开(公告)日:2023-01-19

    申请号:US17811299

    申请日:2022-07-07

    Abstract: An attitude adjustment apparatus for a self-propelled bio-inspired robotic fish includes a fish body, where the fish body includes: a housing; a center-of-gravity adjustment assembly, located in the housing to adjust a center of gravity of the fish body, and including at least one counterweight and a screw-slider mechanism that drives the counterweight to move in a head-to-tail direction; and a suction and drainage system, located in the housing to adjust a weight of the fish body, and including a ballast tank and a water control assembly for controlling a water level in the ballast tank. The center-of-gravity adjustment assembly is combined with the suction and drainage system to rapidly change the weight and center of gravity of the fish body, so as to quickly adjust the pitching attitude and heaving state of the robotic fish.

    DEVICE AND METHOD FOR FORMING INSIDE THREE-DIMENSIONAL FINNED TUBE BY MULTI-EDGE PLOUGHING AND EXTRUDING

    公开(公告)号:US20190039115A1

    公开(公告)日:2019-02-07

    申请号:US16153777

    申请日:2018-10-07

    Abstract: A device for forming inside three-dimensional finned tube by multi-edge ploughing and extruding, comprises a machine frame, a machine head, a supporting mechanism, an axial feeding mechanism and a cutter assembly for forming inside fins. The machine head, the supporting mechanism and the axial feeding mechanism are axially mounted on the machine frame in sequence. The cutter assembly for forming inside fins is mounted on the feeding mechanism. One end of a metal tube to be machined for forming inside three-dimensional fins is clamped on a chunk of a rotary main shaft of the machine head, and the other end thereof is placed on the supporting mechanism. The rotary main shaft of the machine head provides the rotation power for the metal tube, and the axial feeding mechanism drives the cutter assembly to move linearly along a coaxial line of the metal tube and the cutter assembly.

    METHOD FOR SEALING HIGH-TEMPERATURE HEAT PIPE

    公开(公告)号:US20220241909A1

    公开(公告)日:2022-08-04

    申请号:US17401327

    申请日:2021-08-13

    Abstract: A method for sealing a high-temperature heat pipe includes: (1) necking and reducing two ends of the heat pipe separately, so as to obtain a necked end and a reduced end; (2) sealing the necked end by laser welding or electron beam welding; (3) placing the heat pipe in an inert gas glove box, and pouring a working medium without impurities into the heat pipe; (4) heating the heat pipe, connecting the reduced end to a vacuum pump, pumping gas inside the heat pipe by the vacuum pump to vacuumize the heat pipe, such that pressure in an inner cavity of the heat pipe reaches a target pressure, and flattening the reduced end; and (5) sealing an opening of the flattened reduced end by electron beam welding or laser welding, so as to obtain the high-temperature heat pipe.

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