Turbine rotor disk with dirt particle separator
First Claim
1. A turbine rotor disk with a blade having an internal cooling air passage to provide cooling for the blade, the rotor disk including a cooling air feed channel to force cooling air into the internal cooling air passage due to rotation of the rotor disk, the improvement comprising:
- a swirl generator located within the cooling air feed channel, the swirl generator forcing the cooling air to flow through the feed channel in a swirling flow.
1 Assignment
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Accused Products
Abstract
A turbine rotor disk with a turbine blade, the rotor disk having a cooling air feed channel to force cooling air into an internal cooling air passage within the turbine blade, the feed channel including a swirl generator at the inlet end to promote a swirling motion within the cooling air, and the feed channel including a helical rib extending from the swirl generator to the outlet of the feed channel to maintain the swirling motion of the cooling air within the feed channel such that dirt particles in the cooling air are collected within the center of the swirling air flow. The feed channel directs the swirling cooling air into a first passage of the internal serpentine flow cooling circuit of the blade. A cooling air exit hole is located at the blade tip and is aligned with the cooling air flow in the first passage. The swirling air flow with the collected dirt particles ejects the dirt particles out through the exit hole while the clean cooling air continues through the serpentine flow circuit to provide cooling for the blade.
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Citations
12 Claims
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1. A turbine rotor disk with a blade having an internal cooling air passage to provide cooling for the blade, the rotor disk including a cooling air feed channel to force cooling air into the internal cooling air passage due to rotation of the rotor disk, the improvement comprising:
a swirl generator located within the cooling air feed channel, the swirl generator forcing the cooling air to flow through the feed channel in a swirling flow. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. In a turbine rotor disk having a feed channel in the rotor disk and an internal cooling passage in a rotor blade, a process for separating dirt particles from cooling air passing through the blade comprising the steps of:
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promoting a vortex swirling motion in the cooling air that is passed into a first channel of the blade cooling passage; providing an initial swirl to the cooling air flowing into the feed channel; collecting dirt particles within the swirling cooling air passing through the feed channel; directing the swirling air in the first channel toward a particulate purge hole in the blade tip; and
,turning the cooling air through the blade cooling passage at the blade tip such that the dirt particles are ejected out through the particulate purge hole while clean cooling air continues along the blade cooling air passage to provide cooling for the blade. - View Dependent Claims (10, 11, 12)
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Specification