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US 2024/0328720 A1Published application
Exhaust gas heat exchanger with twisted restrictor
AssigneeRB Distribution, Inc.
InventorsRajan Sunilkumar SHAH, Stephen B. MILLER, Robert Jules PISCH
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Abstract
A heat exchanger having selected heat exchanger tubes that includes a flow restrictor that causes a non-linear flow through the heat exchanger tubes.
Claims30
A heat exchanger, comprising:
- a housing having an inlet face, an outlet face, and a coolant fluid chamber between the inlet face and the outlet face;
- a plurality of heat exchanger tubes is mounted within the coolant fluid chamber;
- and,
- at least one of the heat exchanger tube among the plurality of heat exchanger tubes includes a flow restrictor.
1 more element
A heat exchanger tube assembly for an exhaust gas heat exchanger, the assembly comprising:
- an elongated tube with a predetermined length;
- and,
- a twisted flow restrictor that is secured within the elongated tube and causes exhaust gas through the elongated tube to have a non-linear flow through the elongated tube.
A tube kit for use in assembling a heat exchanger. The kit comprising:
- a first plurality of elongated tubes that have a predetermined length, a first interior diameter;
- and, a twisted flow restrictor that is secured within the first interior diameter;
- and,
- a second plurality of elongated tubes that have a second interior diameter that is less than the first interior diameter and the second plurality of elongated tubes is unrestricted.
1 more element
A method of forming an exhaust gas heat exchanger, the method comprising the steps of:
- providing a liquid tight chamber for circulating coolant within the chamber between a first face and a second face that are separated by a predetermined distance;
- providing a first plurality of tubes that extend through the liquid tight chamber, the first face, the second face, and are arranged in a first predetermined array;
- providing a twisted exhaust gas flow restrictor in selected tubes among the first plurality of tubes;
- and,
- providing a second plurality of tubes that extend through the liquid tight chamber, the first face, the second face, and are arranged in a second predetermined array.
2 more elements
Dependencies are inferred from the claim text.