Heat exchanger

Claim 2

A double channel counter flow heat exchanger means having an independently removable matrix construction with cold free sides and a hot middle range subjected to high temperature differences at up to 450 psi; that normally would lead to undesired deformation for effecting heat exchange between first and second fluid mediums comprising in combination spaced walls forming said spaced sides, chamber-forming means including pleated means between said walls with the folds of said pleated means extending between and secured to said walls to form a chamber between each side of said pleated member and the adjacent wall, closure means between the sides of said walls to close the sides of said chamber, closure means connected to the ends of the pleated means to close the ends of said folds and the ends of said chambers between the ends of said walls, a plurality of channel means in each of said walls extending between the ends of said walls and across said folds and opening into the chamber formed by said folds, said channel means in each wall having inlets and outlets for a fluid medium at one end of the wall, so that one medium may flow through inlet channel means and between the folds to outlet channel means in each chamber to emerge from the same end of said wall, the inlets and outlets of each wall being at the end opposite the inlets and outlets of the other wall collectively in a mirror image as to guidance of fluid medium flow therewith.

Claim 3

A double channel counter flow heat exchanger means comprising in combination at least two heat exchangers separately removable as units without requiring disassembly of the other, each of said heat exchangers comprising a pleated element forming a wall between two chambers, the ends of the folds being closed, a housing in which said heat exchangers are mounted in common and are connected rigidly in parallel for a mirror image as to guidance of fluid mediums therewith, heat exchanger matrices defining headers originally connected adjacent to the ends of said heat exchangers forming inlet conduits therewith for one medium, first outlet conduit means for said one medium communicating with the heat exchangers rigidly connected therewith intermediate said headers, inlet conduits for the second medium communicating with said heat exchangers rigidly connected therewith in the range of said first outlet conduit means and on the opposite side of the respective pleated elements, outlet conduits for the second medium rigidly connected therewith leading from the ends of said heat exchangers into said housing from the said opposite side of said elements, coverings for the heat exchanger matrices located between the heat exchanger matrices connected with one heat exchanger and between adjoining heat exchangers, said coverings being rigidly connected with said housing and support walls formed therewith supporting said parallel connected heat exchangers in spaced relation in said housing and engaging the inside of the housing.

Claim 4

A double channel counter flow heat exchanger means comprising in combination at least two heat exchangers separately removable as units without requiring disassembly of the other, each of said heat exchangers comprising a pleated element forming a wall between two chambers, the ends of the folds being closed, a housing in which said heat exchangers are mounted in common and are connected rigidly in parallel for a mirror image as to guidance of fluid mediums therewith, heat exchanger matrices defining headers originally connected adjacent to the ends of said heat exchangers forming inlet conduits therewith for one medium, first outlet conduit means for said one medium communicating with the heat exchangers rigidly connected therewith intermediate said headers, inlet conduits for the second medium communicating with said heat exchangers rigidly connected therewith in the range of said first outlet conduit means and on the opposite side of the respective pleated elements, outlet conduits for the second medium rigidly connected therewith leading from the ends of said heat exchangers into said housing from the said opposite side of said elements, coverings for the heat exchanger matrices located between the heat exchanger matrices connected with one heat exchanger and between adjoining heat exchangers, said coverings being rigidly connected with said housing and support walls formed therewith supporting said parallel connected heat exchangers in spaced relation in said housing and engaging the inside of the housing.

Claim 5

A double channel counter flow heat exchanger means in combination according to claim 2 in which said heat exchanger means comprises a housing in which said heat exchangers are mounted in common and are connected rigidly in parallel, heat exchanger matrices in parallel defining headers originally connected adjacent to the ends of said heat exchangers forming inlet conduits therewith for one medium, first outlet conduit means for said one medium communicating with the heat exchangers rigidly connected therewith intermediate said headers, inlet conduits for the second medium communicating with said heat exchangers rigidly connected therewith in the range of said first outlet conduit means and on the opposite side of the respective pleated elements, outlet conduits for the second medium leading rigidly connected therewith from the ends of said heat exchangers into said housing from the said opposite side of said elements, self-sealing labyrinth seal means located between the housing chamber-forming means and the inlet conduit means and outlet conduit means of said heat exchanger matrices, coverings for the heat exchanger matrices located between the heat exchanger matrices connected with one heat exchanger and between adjoining heat exchangers, said coverings being rigidly connected with said housing and support walls formed therewith supporting said parallel connected heat exchangers in spaced relation in said housing and engaging the inside of the housing.

Claim 6

A double channel heat exchanger means in combination according to claim 2 in which at least said support walls include means forming slot-shaped gaps to compensate for heat differential.

Claim 7

A double channel heat exchanger means in combination according to claim 3 which includes conduits for the respective media leading into said housing, and said labyrinth seal means surrounding said conduits and sealing around the conduits near the ends of said heat exchangers.