Heat exchanger inlet tube with flow distributing turbulizer
AssigneeDana Canada Corporation
InventorXiaoyang Rong
Life of this patent
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Abstract
A turbulizer, such as a helical fin about a core pipe, is located in a heat exchanger manifold to distribute liquid phase fluid through a plurality of tube members connected to the manifold.
Claims23
A heat exchanger comprising:
- a manifold defining an inlet manifold chamber having a manifold chamber inlet opening;
- a plurality of tube members each defining an internal flow channel having an opening into the manifold chamber;
- and
- an elongate core pipe fixed in the manifold chamber, the core pipe having a turbulizing structure extending along a portion thereof passing adjacent the flow channel openings for distributing liquid phase fluid flowing into the manifold chamber among the flow channels.
A multi-pass heat exchanger with a plurality of heat exchanger sections each associated with a single heat exchanger pass and each having (a) a stack of tube members, and (b) manifold portions forming an inlet manifold chamber and an outlet manifold chamber, the tube members each defining respective flow channels communicating at opposite ends thereof with associated inlet and outlet manifold chambers, the heat exchanger including an inlet tube passing through a first one of the heat exchanger sections for carrying fluid to a further heat exchanger section, the inlet tube passing through an annular inlet opening that opens into the inlet manifold chamber of the first heat exchanger section, a turbulizing structure being provided along the inlet tube in the inlet manifold chamber of the first heat exchanger section for distributing liquid entering through the inlet opening among the tube member flow channels communicating with the inlet manifold chamber of the first heat exchanger section.
A heat exchanger comprising:
- a first plurality of stacked tube members having respective first inlet and first outlet distal end portions defining respective first inlet and first outlet openings, all of said first inlet openings being joined together so that the first inlet distal end portions form a first inlet manifold chamber and all of said first outlet openings being joined together so that the first outlet distal end portions form a first outlet manifold chamber;
- a second plurality of stacked tube members having respective second inlet and second outlet distal end portions defining respective second inlet and second outlet openings, all of said second openings being joined together so that the second inlet distal end portions form a second inlet manifold chamber and all of said second outlet openings being joined together so that the second outlet distal end portions form a second outlet manifold chamber;
- the first inlet manifold chamber being joined to communicate with the second outlet manifold chamber through an annular opening;
- and
- a fixed inlet tube for bringing fluid to be evaporated into the heat exchanger, the inlet tube having a portion the extends through the first inlet manifold chamber and through the annular opening, the annular opening being larger than a portion of the inlet tube extending therethrough to permit fluid to flow from the second outlet manifold chamber to the first inlet manifold chamber through the annular opening external to the inlet tube, a helical fin being provided on the portion of the inlet tube in the first inlet manifold chamber to distribute among the first plurality of stacked tube members fluid flowing into the first inlet manifold chamber from the annular opening.
Dependencies are inferred from the claim text.