Mitsubishi Heavy Industries Limited

Shiro Yoshida

Takao Yokoyama

Hirotaka Higashimori

Takashi Mikogami

Hiroshi Ogita

A mixed flow turbine includes a hub attached to a rotation axis and a plurality of rotor blades. Each of the plurality of rotor blades is attached to the hub in a radial direction, and the hub is rotated based on fluid supplied to a rotation region of the plurality of rotor blades. Each of the plurality of rotor blades has a curved shape that convexly swells on a supply side of the fluid.

Mixed flow turbine and mixed flow turbine rotor blade

Cooling oil passes through a cooling oil passage ( ) on the inside of an iron core ( ), and cools the inside of the iron core ( ). Further, cooling air passes through a cooling air passage ( ) in the inside of the iron core ( ) and a clearance ( ) between the internal periphery of the iron core ( ) and the external periphery of a rotor ( ), and cools the inside of the iron core ( ) and the rotor ( ). Therefore, it is possible to effectively cool the internal periphery side of a stator ( ) and the rotor ( ). When a cooling oil is sprayed from the cooling oil passage ( ) into the cooling air passage ( ), it is possible to obtain a more effective cooling effect by utilizing the latent heat of vaporization of the mist of the cooling oil.

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Kanagawa-ken, Japan

Shiro Yoshida