Cooling structure in generator

H - Electricity – 02 – K

Patent

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Details

H02K 9/19 (2006.01) H02K 1/20 (2006.01) H02K 5/20 (2006.01) H02K 9/04 (2006.01) H02K 9/20 (2006.01)

Patent

CA 2404762

A cooling structure of a generator, wherein a cooling oil passes a cooling oil passage (28) inside a core (7) to cool the inside of the core (7), and cooling air passes a cooling air passage (31) inside the core (7) and a clearance (5) between the inner peripheral surface of the core (7) and the outer peripheral surface of a rotor (4) to cool the inside of the core (7) and the rotor (4), whereby the inner peripheral surface of a stator (6) and the rotor (4) can be cooled to provide an effective cooling effect and, when cooling oil is sprayed from the inside of the cooling oil passage (28) into the cooling air passage (31), a more effective cooling effect can be provided by utilizing the vaporization and latent heat of the mist of the cooling oil.

Cette invention concerne une structure de refroidissement pour génératrice. Dans le cas présent, de l'huile de refroidissement traverse un passage de refroidissement (28) à l'intérieur d'un noyau (7) dont elle refroidit la partie interne. De l'air de refroidissement traverse un passage d'air de refroidissement (31) dans le noyau. Un dégagement (5) entre la surface périphérique interne du noyau (7) et la surface périphérique externe d'un rotor (4) refroidit le noyau (7) et le rotor (4). Le refroidissement de la surface périphérique interne d'un stator (6) et du rotor (4) assure un effet de refroidissement efficace. De plus, le passage de l'huile de refroidissement sous forme de vapeur de l'intérieur du passage pour huile de refroidissement (28) dans le passage pour air de refroidissement (31) améliore encore le refroidissement grâce à la vaporisation et à la chaleur latente dans le brouillard d'huile de refroidissement.

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