| 摘要 |
The invention provides a dry-type transformer device with an electronic control device and a pressing spring. The device comprises a housing (80) which is provided with a cooling exhaust fan (83) on the side wall, and a plurality of winding columns (81) which are uniformly arranged in the peripheral direction in the housing. The bottom of the central position, surrounded by the plurality of winding columns (81), is provided with a cooling blast device (82) whose air is supplied by an air delivery pipe (61). The cooling blast device (82) comprises an air cavity annular housing (15) which is provided with a gas access nozzle (6) to communicate with the air delivery pipe (61). The air cavity annular housing (15) is integrally provided with a bottom surface annular part (152) and a cylindrical part (151) on the upper side, and a gas communicating cavity (150) is in the air cavity annular housing (15). |
