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US 12,607,412 B2Granted
Exhaust gas heat exchanger with twisted restrictor
AssigneeRB Distribution, Inc.
InventorsRajan Sunilkumar Shah, Stephen B. Miller, Robert Jules Pisch
Life of this patent
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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.
Claims22
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;
- at least one of the heat exchanger tube among the plurality of heat exchanger tubes includes a flow restrictor;
- and,
- the plurality of heat exchanger tubes mounted within the coolant fluid chamber have a first array of heat exchanger tubes with a first diameter and a second array of heat exchanger tubes with a second, smaller diameter.
2 more elements
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;
- at least one of the heat exchanger tube among the plurality of heat exchanger tubes includes a flow restrictor;
- and,
- at least one backpressure reducing tube in the housing.
2 more elements
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, wherein the twisted flow restrictor creates two separate flow paths 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
Dependencies are inferred from the claim text.