초록 ▼

An improved method of modifying a honeycombed body having a multiplicity of open-ended cells extending therethrough between opposite face ends of the body to produce therein a multiplicity of flow paths for at least two and possibly three separate fluids. For accommodating two fluids, selected colum

An improved method of modifying a honeycombed body having a multiplicity of open-ended cells extending therethrough between opposite face ends of the body to produce therein a multiplicity of flow paths for at least two and possibly three separate fluids. For accommodating two fluids, selected columns of cells within the honeycombed body are provided with openings near at least one face end for first fluid flow through one or two longitudinal, opposed boundary surfaces and through inner cell walls parallel to the cell axes while the open-ends of such columns on a face end perpendicular to the selected cell axes are sealed against fluid flow. Second fluid flow is through the unselected columns of cells parallel to and either in the direction of or counter to the first fluid flow. Specifically, the invention provides an improved method for sealing the selected columns of cells on face ends of the body. The multiplicity of flow paths, the high area of useful contact between separate fluids and the thin walls between separate fluids make the honeycombed body particularly useful as a fixed recuperator or heat exchanger. A variety of flow path types can be provided in one or both groups of columns of cells, viz. U-, Z-, I-, L- and T-shaped.

대표청구항 ▼

An improved method of fabricating a multiple flow path body having a plurality of contiguous flow paths extending therethrough for separate fluid flow, from a honeycombed body having a matrix of thin walls defining a multiplicity of open-ended cells extending from one face end thereof to another fac

An improved method of fabricating a multiple flow path body having a plurality of contiguous flow paths extending therethrough for separate fluid flow, from a honeycombed body having a matrix of thin walls defining a multiplicity of open-ended cells extending from one face end thereof to another face end thereof and being bounded on sides generally parallel to cell axes by generally opposed upper and lower boundary surfaces connected by first and second side boundary surfaces, the cells being grouped into a plurality of columns of cells, each column being separated from adjacent columns of cells by a fluid barrier wall surface extending continuously from the upper boundary surface to the lower boundary surface and from the one face end of the honeycombed body to the other face end thereof, wherein the improvement comprises a. sealing the open-ended cells on at least one face end of the honeycombed body with a resist material which enters the cells to a predetermined depth, and thereafter becomes removably stiff, b. forming channels of a predetermined depth in selected columns of cells from the at least one face end of the honeycombed body by removing portions of the cell walls and portions of at least one of the upper boundary surface and the lower boundary surface, all between adjacent fluid barrier wall surfaces in the selected columns of cells, c. applying a final sealant material to the channels and transforming the channels in the selected columns of cells into conduits having at least one open-end by filling the channels from the at least one face end with the final sealant material to a depth less than the depth of the channels, and d. removing the remaining resist material.