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A generator gas shield includes an annular ring body having an outer radially extending flange terminating at a first free end of a first diameter; a curved inlet portion; a substantially axial portion surrounding a center opening, and a curved outlet portion terminating at a second free end of a se

A generator gas shield includes an annular ring body having an outer radially extending flange terminating at a first free end of a first diameter; a curved inlet portion; a substantially axial portion surrounding a center opening, and a curved outlet portion terminating at a second free end of a second diameter smaller than the first diameter.

대표청구항 ▼

1. A generator comprising a rotor and a stator, and an axial flow fan, the stator having an endwinding region including circumferentially spaced armature bars arranged about the rotor, with a radial cooling gap between the stator and rotor, with a radial cooling gap between the stator and rotor; the

1. A generator comprising a rotor and a stator, and an axial flow fan, the stator having an endwinding region including circumferentially spaced armature bars arranged about the rotor, with a radial cooling gap between the stator and rotor, with a radial cooling gap between the stator and rotor; the armature bars terminating at loops enclosed within a corresponding number of series loop caps; and an annular gas shield having an outer radially extending flange terminating at one end having a first diameter and secured to a section plate of said stator; a curved inlet portion; an axial portion having a second diameter defining a center opening surrounding said axial flow fan and including a seal insert adapted to cooperate with and establish a seal with blades of said axial flow fan; and a curved outlet portion at an opposite end having a third diameter smaller than said first diameter but greater than said second diameter and terminating at a location proximate said armature bars. 2. The generator of claim 1 wherein said curved outlet portion is provided with a plurality of circumferentially spaced ventilation holes. 3. The generator of claim 2 wherein said ventilation holes are located so as to be adjacent said series loop caps. 4. The generator of claim 2 wherein said curved outlet portion establishes a flow path in a first direction toward a gap between the rotor and the stator, and wherein said ventilation holes establish a flow path in a second direction counter to said first direction. 5. The generator of claim 4 wherein said ventilation holes are arranged at an angle of between about 4-70° relative to a horizontal rotor axis.