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Title:
OIL-FILLED TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2019/092909
Kind Code:
A1
Abstract:
Provided is an oil-filled transformer wherein a desired thermal radiation capability is secured while allowing for a reduction in both the size and weight of the container. This oil-filled transformer comprises an iron core, a coil wound around the iron core, a container accommodating the iron core and the coil, and a lid closing the upper part of the container, with insulation oil being housed in the container. The transformer is provided with a thermal conductive member having a higher thermal conductivity than the insulation oil, the thermal conductive member traversing the upper surface and the lower surface of the lid or being disposed on the lower surface of the lid. The thermal conductive member is disposed so as to be in contact with the insulation oil.

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Inventors:
YAMAZAKI Miki (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
KUDO Naomichi (3, Kanda Neribei-cho, Chiyoda-k, Tokyo 22, 〒1010022, JP)
ANDO Kunihiko (3, Kanda Neribei-cho, Chiyoda-k, Tokyo 22, 〒1010022, JP)
KUWABARA Masanao (3, Kanda Neribei-cho, Chiyoda-k, Tokyo 22, 〒1010022, JP)
SATO Kohei (3, Kanda Neribei-cho, Chiyoda-k, Tokyo 22, 〒1010022, JP)
KAIZU Tomohiro (3, Kanda Neribei-cho, Chiyoda-k, Tokyo 22, 〒1010022, JP)
Application Number:
JP2018/020938
Publication Date:
May 16, 2019
Filing Date:
May 31, 2018
Export Citation:
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Assignee:
HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. (3 Kanda Neribei-cho, Chiyoda-ku Tokyo, 22, 〒1010022, JP)
International Classes:
H01F27/12; H01F27/22
Domestic Patent References:
WO2017110124A12017-06-29
Foreign References:
JPS5258722U1977-04-28
JPH09213533A1997-08-15
JPS6314410Y21988-04-22
JPS6242513Y21987-10-31
JPS61109115U1986-07-10
JPS55120119U1980-08-26
JP2008041929A2008-02-21
JPS5596626U1980-07-04
JPH09120918A1997-05-06
JPH09120917A1997-05-06
Attorney, Agent or Firm:
SEIRYO I.P.C. (24-2, Hatchobori 2-chome Chuo-k, Tokyo 32, 〒1040032, JP)
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