A bearing with pads having cooling micro-channels therein, and method
AssigneeNuovo Pignone Tecnologie Srl
InventorsMarco RAVEGGI, Stefano FRANCHI, Valentina PIVETTA, Daniele PANARA
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Abstract
The bearing has a housing and a plurality of pads coupled with the housing. The pads form bearing surfaces facing a shaft receiving space. The pads are provided with cooling micro-channels formed therein, adapted to circulate lubrication fluid and improve heat removal.
Claims21
1-20. (canceled)
A bearing for supporting a shaft rotating around a bearing axis, the bearing comprising:
- a housing structure;
- a plurality of pads;
- wherein each pad is coupled with the housing structure and comprises:
- a bearing surface, adapted to co-act with a rotary shaft supported by the bearing;
- an opposite back surface directed towards the housing structure;
- a radial leading side surface and a radial trailing side surface, the radial leading side surface and the radial trailing side surface extending radially with respect to the bearing axis;
- a shaft receiving space;
- a lubrication fluid volume between the housing structure and the shaft receiving space;
- wherein in operation the lubrication fluid volume is filled with lubrication fluid circulating therein;
- wherein:
- each pad comprises a plurality of cooling micro-channels;
- each cooling micro-channel has an inlet end and an outlet end in fluid communication with said lubrication fluid volume and is oriented such that circulation of lubrication fluid in the lubrication fluid volume promotes flow of the lubrication fluid through the cooling micro-channels;
- and the inlet end of at least one of said cooling micro-channels is positioned along the radial leading side surface of the respective pad.
A method of manufacturing a bearing for supporting a shaft rotating around an axis, the bearing comprising a plurality of pads, wherein each pad is coupled with a housing structure and comprises a bearing surface;
- the method comprising the step of manufacturing said pads by additive manufacturing with a plurality of cooling micro-channels extending therein and having an inlet end and an outlet end on outer surfaces of the pads.
Dependencies are inferred from the claim text.