公开(公告)号：US20180062471A1

公开(公告)日：2018-03-01

申请号：US15572362

申请日：2016-12-08

Applicant: M-LINK CO., LTD.

Inventor： Manabu SHIRAKI ,  Shuichi OMOMO

IPC: H02K1/32 ,  H02K9/02 ,  H02K21/22 ,  H02K3/26 ,  H02K3/24 ,  H02K1/28 ,  H02K1/27

CPC classification number: H02K1/32 ,  H02K1/272 ,  H02K1/2786 ,  H02K1/28 ,  H02K3/24 ,  H02K3/26 ,  H02K3/47 ,  H02K7/085 ,  H02K9/02 ,  H02K9/04 ,  H02K9/06 ,  H02K21/22

Abstract: The present invention relates to a high performance rotating electrical machine which aims at downsizing, and challenges inevitable technical problems such as deterioration of efficiency η caused by copper loss and temperature rise inside the rotating electrical machine due to heat generation induced by eddy current generated in a magnetic body. Such technical problem may be solved by configuring a coreless rotating electrical machine as comprising a stator having a cylindrical coil of a laminate structure consisting of two-layer or four-layer conductive metal sheets and a lid-type mount which fixes one of end faces of the cylindrical coil, and a rotor having a cup-type mount opposingly positioned with respect to the lid-type mount, with an air gap formed by a bottom, an inner cylindrical air-channel forming body and an outer cylindrical air-channel forming body, in which the cylindrical coil is arranged as suspended, and a plurality of magnets equipped on the outer cylindrical air-channel forming body and/or the inner cylindrical air-channel forming body, the cup-type mount has intake holes leading to the second air space on the bottom and a plurality of exhaust holes leading to the air gap, positioned in a row around a circumference of the outer cylindrical air-channel forming body, close to the bottom, and/or a plurality of exhaust holes leading to the air gap, consisting of arrays in a lengthwise direction of the air gap, from the open end face to the bottom with equally spaced intervals on the circumference of the outer cylindrical air-channel forming body, wherein ambient air taken into the second air space and/or ambient air taken into the outer side of the cylindrical coil, under differential pressure generated around the rotor by rotation thereof, are configured to directly cool a plurality of the magnets exposed in the air gap and both surfaces of the cylindrical coil arranged in the air gap, and to be discharged from the exhaust holes of the rotating outer cylindrical air-channel forming body.

公开(公告)号：US20190386542A1

公开(公告)日：2019-12-19

申请号：US16464036

申请日：2016-11-24

Applicant: M-LINK CO., LTD.

Inventor： Manabu SHIRAKI ,  Shuichi OMOMO

IPC: H02K9/20 ,  H02K3/47 ,  H02K11/25 ,  F28D15/06

Abstract: A coreless rotating electrical machine for being operated under load exceeding rated load, driving method thereof, driving system including thereof; coreless rotating electrical machine for being operated under load exceeding rated load, driving method thereof, driving system including thereof, in which air space including air gap is formed by stator consisting of lid-type mount which fixes end face of energizable coreless cylindrical coil and rotor consisting of cylindrical mount or cup-type mount opposingly and rotatably positioned to lid-type mount with plurality of magnets equipped on inner surface of cylindrical or cup-type mount, wherein when load exceeds the rating, operation is enabled by adjusting supply amount of refrigerant liquid so the temperature of cylindrical coil does not exceed allowable maximum temperature at rated operation; refrigerant liquid supplied to air space including air gap to allow cylindrical coil to vaporize refrigerant liquid to cool by latent heat of vaporization of refrigerant liquid.

公开(公告)号：US20220149703A1

公开(公告)日：2022-05-12

申请号：US17584462

申请日：2022-01-26

Applicant: M-LINK CO., LTD.

Inventor： Manabu SHIRAKI ,  Shuichi OMOMO

IPC: H02K9/20 ,  H02K11/25 ,  H02K3/47

Abstract: A coreless rotating electrical machine for being operated continuously comprises a stator including an energizable coreless cylindrical coil and a lid-type mount; and a rotor including a cup-type mount. The lid-type mount is equipped with a channel for supplying a refrigerant liquid to the air gap. The coreless rotating electrical machine is operated continuously by supplying the refrigerant liquid into the air gap, allowing the cylindrical coil, which generates heat, to vaporize the refrigerant liquid, cooling the cylindrical coil by latent heat of vaporization, and repeating an operation of supplying the refrigerant liquid to prevent a temperature of the cylindrical coil exceeding an allowable maximum temperature, and an operation of adjusting the supply of the refrigerant liquid to prevent the temperature of the cylindrical coil falling below a minimum temperature, so as to maintain the temperature in a range between the allowable maximum and minimum temperatures.