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US 10,809,013 B2Granted
Heat exchange element profile with enhanced cleanability features
AssigneeHowden UK Limited
InventorJim Cooper
Life of this patent
Estimating the term…
Abstract
A stack of heating surface elements includes a first heating surface element (4) having first (10), second (12) and third (14) zones arranged sequentially along a primary gas flow direction (A). The first zone (10) includes a herringbone structure, the second zone (12) includes a flat structure, and the third zone (14) includes a plurality of corrugations extending in the primary gas flow direction (A). The corrugations have flat peak and trough regions. The stack also includes a second heating surface element (36), where the second heating surface element includes a plurality of corrugations extending in the primary gas flow direction (A).
Claims20
A stack of heat transfer elements with a primary gas flow direction, said stack comprising:
- a first heat transfer element having zones arranged sequentially along the primary gas flow direction, a first zone disposed proximate to a first end of the stack of heat transfer elements, the first zone including a herringbone structure, the herringbone structure having a plurality of undulations arranged laterally side by side, a longitudinal extent of said plurality of undulations being non-parallel to said primary gas flow direction;
- and
- a second zone disposed proximate to a second end of the stack of heat transfer elements, the second zone including a plurality of castellated corrugations extending in the primary gas flow direction, the plurality of castellated corrugations having a series of repeated and adjacent flat peaks and troughs;
- and
- a second heat transfer element, said second heat transfer element including a plurality of undulating corrugations extending in the primary gas flow direction, said plurality of undulating corrugations having a different structure from said plurality of castellated corrogations,
- wherein the first heat transfer element is disposed over the second heat transfer element in the stack, such that the plurality of castellated corrugations of the first heat transfer element are configured to contact the plurality of undulating corrugations of the second heat transfer element along the primary gas flow direction.
3 more elements
A stack of heating surface elements with a primary gas flow direction, said stack comprising:
- a first heating surface element having zones arranged sequentially along the primary gas flow direction, a first zone disposed proximate to a first end of the stack of heating surface elements, the first zone including a herringbone structure, said herringbone structure having a plurality of regions, said plurality of regions being arranged such that a boundary of regions is along said primary gas flow direction, said plurality of regions including a first region having a plurality of undulations arranged laterally side by side, a longitudinal extent of said plurality of undulations in said first region being greater than 0° and less than 90° to said primary gas flow direction, said plurality of undulating corrugations having a different strucutre from said plurality of castellated corrugations, said plurality of regions further including a second region, adjacent to said first region, said second region having a plurality of undulations arranged laterally side by side, a longitudinal extent of said plurality of undulations in said second region being less than 0° and more than −90° to said primary gas flow direction;
- and
- a second zone disposed proximate to a second end of the stack of heating surface elements, the second zone including a plurality of castellated corrugations extending in the primary gas flow direction, said plurality of undulating corrugations having a differnt structure from said plurality of castellated corrugations, the castellated corrugations having a series of repeated and adjacent flat peak and trough regions;
- and
- a second heating surface element, said second heating surface element including a plurality of undulating corrugations extending in the primary gas flow direction, said plurality of undulating corrugations having a different structure from said plurality of castellated corrogations,
- wherein the first heating surface element is disposed over the second heating surface element in the stack, such that the plurality of castellated corrugations of the first heating surface element are configured to contact the plurality of undulating corrugations of the second heating surface element along the primary gas flow direction.
3 more elements
A stack of heating surface elements with a primary gas flow direction, said stack comprising:
- a first heating surface element having zones arranged sequentially along the primary gas flow direction, a first zone disposed proximate to a first end of the stack of heating surface elements, the first zone including a herringbone structure, and a second zone disposed proximate to a second end of the stack of heating surface elements, the second zone including a plurality of castellated corrugations extending in the primary gas flow direction, the castellated corrugations having a series of repeated and adjacent flat peak and trough regions;
- and
- a second heating surface element, said second heating surface element including a plurality of undulating corrugations extending in the primary gas flow direction, said plurality of undulating corrugations having a different structure from said plurality of castellated corrogations,
- wherein the first heating surface element is disposed over the second heating surface element in the stack, such that the plurality of castellated corrugations of the first heating surface element are configured to contact the plurality of undulating corrugations of the second heating surface element along the primary gas flow direction.
1 more element
Dependencies are inferred from the claim text.