Heat exchange element
AssigneePackless Metal Hose, Inc.
InventorL. Robert Zifferer
Life of this patent
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Abstract
Multi-passage heat exchange element which includes an elongated central first fluid passage for passage of a first fluid of a heat exchanger, a plurality of substantially helically convoluted second fluid passages for a second fluid of a heat exchanger, the second fluid passages substantially helically surrounding at least a portion of the elongated central passage, and a plurality of substantially helically convoluted first fluid passages for passage of the first fluid of a heat exchanger, the first fluid passages substantially surrounding at least a portion of the second fluid passages.
Claims40
A multi-passage exchange element comprising:
- a central first fluid passage for passage of a first fluid of a heat exchanger;
- a plurality of substantially helically convoluted second fluid passages for passage of a second fluid of a heat exchanger, the second fluid passages substantially surrounding at least a portion of the central passage;
- and
- a plurality of substantially helically convoluted first fluid passages for passage of the first fluid of a heat exchanger, the first fluid passages substantially surrounding at least a portion of the second fluid passages;
- and
- a passageway connecting the central first fluid passage to at least one of the substantially helically convoluted first fluid passages.
A heat exchange element made according to the process of:
- passing a tube through a die which is adapted to produce substantially helical corrugations in the tube, a cross section of a corrugation comprising a head portion and a neck portion, the neck portion being thinner than the head portion;
- and
- passing the corrugated tube through a reduction die which is adapted to bend the corrugations to form a plurality of helically convoluted passages substantially surrounding at least a portion of a central passage in the tube.
A multi-passage exchange element comprising:
- a central first fluid passage for passage of a first fluid of a heat exchanger;
- a plurality of substantially helically convoluted second fluid passages for passage of a second fluid of a heat exchanger, the second fluid passages substantially surrounding at least a portion of the central passage;
- a plurality of substantially helically convoluted first fluid passages for passage of the first fluid of a heat exchanger, the first fluid passages substantially surrounding at least a portion of the second fluid passages;
- and
- wherein a minor amount of the first fluid in the central first fluid passage can leak to the first fluid passages during use, and vice versa.
A multi-passage exchange element comprising:
- a central first fluid passage for passage of a first fluid of a heat exchanger;
- a plurality of substantially helically convoluted second fluid passages for passage of a second fluid of a heat exchanger, the second fluid passages substantially surrounding at least a portion of the central passage;
- a plurality of substantially helically convoluted first fluid passages for passage of the first fluid of a heat exchanger, the first fluid passages substantially surrounding at least a portion of the second fluid passages;
- an outer second fluid passage, the outer second fluid passage substantially surrounding at least a portion of the first fluid passages;
- and
- wherein a minor amount of the first fluid in the central first fluid passage can leak to the first fluid passages during use, and vice versa.
A multi-passage exchange element comprising:
- a central first fluid passage for passage of a first fluid of a heat exchanger;
- a plurality of substantially helically convoluted second fluid passages for passage of a second fluid of a heat exchanger, the second fluid passages substantially surrounding at least a portion of the central passage;
- a plurality of substantially helically convoluted first fluid passages for passage of the first fluid of a heat exchanger, the first fluid passages substantially surrounding at least a portion of the second fluid passages;
- and wherein a cross section of the second fluid passages comprises a substantially oval or tear shape.
A multi-passage exchange element comprising:
- a central first fluid passage for passage of a first fluid of a heat exchanger;
- a plurality of substantially helically convoluted second fluid passages for passage of a second fluid of a heat exchanger, the second fluid passages substantially surrounding at least a portion of the central passage;
- a plurality of substantially helically convoluted first fluid passages for passage of the first fluid of a heat exchanger, the first fluid passages substantially surrounding at least a portion of the second fluid passages;
- and
- wherein a cross section of at least one second passage is substantially shoe or boot shaped.
Dependencies are inferred from the claim text.