Embodiments provide a combustion structure that can achieve stable combustion by addressing the aforementioned drawbacks in the prior art such as low flame stability, backfire, deflagration, blockage and/or any other drawbacks. The combustion chamber structure in accordance with the disclosure can include: a grate structure including a first set of elongated components, a fire retention structure including a second set of elongated components. The first set of first elongated components can be arranged along an axial direction within the combustion chamber structure. The second set of elongated components can be arranged along the axial direction in a same direction as the first elongated components. The second set of elongated components can be configured to generate a negative pressure zone within the combustion chamber. The first set of elongated components can form apertures that can be aligned with apertures formed by the second set of elongated components.

A grate step module (1) for a thrust combustion grate for the combustion of refuse in a large-scale plant has a carrier part (2) for the grate steps (3, 4), exactly one fixed grate step (3) and exactly one movable grate step (4) and also a grate step drive. The movable grate step (4) is displaceable back and forth with respect to the fixed grate step (3) by way of the grate step drive. The grate step module (1) is connectable in a row with further grate step modules (1) without a gap and in this way forms the thrust combustion grate.

A grate step module (1) for a thrust combustion grate for the combustion of refuse in a large-scale plant has a carrier part (2) for the grate steps (3, 4), exactly one fixed grate step (3) and exactly one movable grate step (4) and also a grate step drive. The movable grate step (4) is displaceable back and forth with respect to the fixed grate step (3) by way of the grate step drive. The grate step module (1) is connectable in a row with further grate step modules (1) without a gap and in this way forms the thrust combustion grate.

A grate bar configured to include a reinforcement structure of sheet metal and structured to be manufacture at a reduced cost while exhibiting reduced wear and enhanced resistivity to hear and corrosives. A metal-ceramic compound grate (for example—an incinerator grate) utilizing such a grate bar. An incinerator and a cooling grate including such grate bar.

A grate bar configured to include a reinforcement structure of sheet metal and structured to be manufacture at a reduced cost while exhibiting reduced wear and enhanced resistivity to hear and corrosives. A metal-ceramic compound grate (for example—an incinerator grate) utilizing such a grate bar. An incinerator and a cooling grate including such grate bar.

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.

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.

Embodiments of the invention relate to a grate bar front section and a matching grate bar rear section and to a grate bar including the grate bar front section and/or the grate bar rear section configured such that, by releasably connecting the grate bar front section to the grate bar rear section, manufacture and maintenance costs are reduced.

A grate block for a combustion grate, wherein consecutive grate blocks are arranged one over the other in a staircase manner and rearrange to convey the combustible material during combustion by means of pushing motions performed in relation to each other. The grate block includes a block body including an upper wall forming a bearing surface, along which wall the combustible material is conveyed, and a front wall forming a push surface, which has first air supply openings formed by a first air supply channel for feeding air to the combustion grate, and a lower bearing edge intended to come into contact with the bearing surface of a grate block located adjacent in the pushing direction S. Further air supply channels, which traverse and are directed obliquely with respect to the direction of the first air supply channels, are arranged in the upper and front walls for cooling the walls.

A grate block for a combustion grate, wherein consecutive grate blocks are arranged one over the other in a staircase manner and rearrange to convey the combustible material during combustion by means of pushing motions performed in relation to each other. The grate block includes a block body including an upper wall forming a bearing surface, along which wall the combustible material is conveyed, and a front wall forming a push surface, which has first air supply openings formed by a first air supply channel for feeding air to the combustion grate, and a lower bearing edge intended to come into contact with the bearing surface of a grate block located adjacent in the pushing direction S. Further air supply channels, which traverse and are directed obliquely with respect to the direction of the first air supply channels, are arranged in the upper and front walls for cooling the walls.