Machine component, particularly a turbomachine component, with cooling features and a method for manufacturing and of operation
A cooled machine component having a body with at least one integrated cooling channel having a lattice structure for guiding a cooling fluid through an interior, the lattice structure arranged as a void space penetrated by a plurality of hollow or solid struts. The lattice structure has an inlet for providing the cooling fluid to be guided through the void space of the lattice structure, and has an outlet for receiving the cooling fluid, the outlet being fluidically connected to a hollow interior of at least one of the plurality of hollow struts. At least a subset of the hollow struts provides a fluidic connection for cooling fluid from the outlet to a plurality of further downstream discharge ports. Walls of the body surrounding each of the plurality of further downstream discharge ports are physically connected to corresponding jackets of the at least one of the plurality of hollow struts.
1. A cooled machine component, comprising:
a body comprising an end surface, the body comprising at least one integrated cooling channel for guiding a cooling fluid through an interior of the body, the at least one integrated cooling channel comprising a lattice structure;
a void space defined in the body;
a plurality of hollow struts disposed in the void space forming the lattice structure;
at least one inlet for providing the cooling fluid to be guided through the void space of the lattice structure to meander around exteriors of the hollow struts in a main flow direction;
at least one outlet for receiving the cooling fluid that has been guided through the void space of the lattice structure;
a plenum chamber in a fluidic connection with the at least one outlet and hollow interiors of at least a subset of the hollow struts for receiving the cooling fluid from the at least one outlet and providing the cooling fluid into the hollow interiors of the subset of the hollow struts; and
a plurality of further downstream discharge ports located in the end face of the body, each of the plurality of further downstream discharge ports defined by an end of each of the hollow interiors,
wherein walls of the body surrounding each of the plurality of further downstream discharge ports are physically connected to corresponding jackets of the subset of the plurality of hollow struts;
wherein each one of the subset of the plurality of hollow struts is free of apertures in its jacket between the void space and the hollow interior and is arranged either perpendicular to the end face or with a maximum deviation from a perpendicular direction to the end face of 45°; and
wherein the subset of the plurality of hollow struts are oriented substantially laterally to the main travel direction of the cooling fluid through the void space; and wherein cooling fluid flows through the lattice structure before entering the plenum chamber and then exits through the hollow struts.
2. The cooled machine component according to claim 1 ,
wherein the end face, during operation, is exposable to a first temperature higher than a second temperature of the cooling fluid.
3. The cooled machine component according to claim 1 ,
wherein the body and the lattice structure are a single piece, built from a common material.
4. The cooled machine component according to claim 1 ,
wherein the void space is additionally penetrated by a plurality of solid struts,
wherein the plurality of hollow struts and the plurality of solid struts and the body are generated via additive manufacturing techniques, selective laser sintering, selective laser melting, or electronic beam melting.
5. The cooled machine component according to claim 1 ,
wherein the void space is additionally penetrated by a plurality of solid struts,
wherein each one of at least a subset of the plurality of hollow struts and of the plurality of solid struts is configured rod-shaped.
6. The cooled machine component according to claim 1 ,
wherein the void space is additionally penetrated by a plurality of solid struts,
wherein each one of at least a first subset of the solid struts is angled to a neighbouring one of the hollow struts, or intersecting one of the hollow struts.
7. The cooled machine component according to claim 1 ,
wherein the void space is additionally penetrated by a plurality of solid struts,
wherein the plurality of hollow struts and the plurality of solid struts define a periodical structure.
8. The cooled machine component according to claim 1 ,
wherein in a region of the void space, a ratio between a volume of solid material and a hollow volume of the lattice structure is between 0.3 and 2.5.
9. The cooled machine component according to claim 1 ,
wherein the body comprises a plurality of segments, each segment providing a single one of the at least one integrated cooling channel which is fluidically separated from further ones of the at least one integrated cooling channel that are located in further segments.
10. The cooled machine component according to claim 9 ,
wherein each one of the segments comprises a plurality of discharge ports, each discharge port is provided with cooling fluid from a single one of the plurality of hollow struts.
11. The cooled machine component according to claim 1 ,
wherein the cooled machine component comprises a turbomachine component.
12. The cooled machine component according to claim 8 ,
wherein in the region of the void space, a ratio between a volume of solid material and a hollow volume of the lattice structure is between 0.4 and 2.0.