US 9,309,839 B2Granted

Heat exchanger and method of manufacturing the same

AssigneeModine Manufacturing Company

InventorsHarald Schatz, Michael Daniel, Thomas Grotophorst, Jeff Schernecker, Daniel Hornback

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Abstract

An exhaust gas recirculation cooler that includes an inlet tank, an outlet tank, and an exhaust gas flow conduit in fluid communication with the inlet tank and the outlet tank. The exhaust gas flow conduit includes a first end, a second end, a first narrow side, a second narrow side, a first channel adjacent the first narrow side and extending between the first end and the second end, a second channel adjacent the second narrow side and extending between the first end and the second end, and a plurality of third channels located between the first channel and the second channel and extending between the first end and the second end. At least one of the inlet tank and the outlet tank includes a wall that inhibits exhaust gas from flowing through the first channel while allowing exhaust gas flow through the plurality of third channels.

Claims20

Dependent claims

An exhaust gas recirculation cooler configured to cool exhaust gas from an engine, the exhaust gas recirculation cooler comprising:

a plurality of coolant ports;
an inlet tank configured to receive the exhaust gas from the engine;
an outlet tank configured to direct the exhaust gas back toward the engine;
a plurality of exhaust gas flow conduits in fluid communication with the inlet tank and the outlet tank and arranged in spaced relation to allow coolant to pass over outer surfaces of the exhaust gas flow conduits, at least one of the plurality of exhaust gas flow conduits including
a first end adjacent the inlet tank,
a second end adjacent the outlet tank,
a first narrow side,
a second narrow side opposite the first narrow side,
substantially flat broad sides extending between the first narrow side and the second narrow side,
a first channel adjacent the first narrow side and extending between the first end and the second end,
a second channel adjacent the second narrow side and extending between the first end and the second end, and
a plurality of third channels located between the first channel and the second channel and extending between the first end and the second end;
and
wherein the inlet tank includes a wall that inhibits the exhaust gas from flowing through the first channel while allowing exhaust gas flow through the plurality of third channels, and wherein at least a portion of the first narrow side and at least a portion of the second narrow side each include at least a portion of the outer surfaces over which coolant is allowed to pass.

11 more elements

An exhaust gas recirculation cooler configured to cool exhaust gas from an engine, the exhaust gas recirculation cooler comprising:

an inlet tank having an exhaust gas flow inlet port configured to receive the exhaust gas from the engine;
an outlet tank having an outlet port configured to direct the exhaust gas back toward the engine;
a first exhaust gas flow conduit in fluid communication with the inlet tank and the outlet tank, the first exhaust gas flow conduit including
a first end adjacent the inlet tank,
a second end adjacent the outlet tank,
a first narrow side,
a second narrow side opposite the first narrow side,
substantially flat broad sides extending between the first narrow side and the second narrow side,
a first channel adjacent the first narrow side and extending between the first end and the second end,
a second channel adjacent the second narrow side and extending between the first end and the second end, and
a plurality of third channels located between the first channel and the second channel and extending between the first end and the second end,
a first inner wall located at the first end of the first exhaust gas flow conduit to inhibit the exhaust gas from flowing through the first channel while allowing exhaust gas flow through the plurality of third channels;
and
a second inner wall located at the first end of the first exhaust gas flow conduit to inhibit the exhaust gas from flowing through the second channel while allowing exhaust gas flow through the plurality of third channels.

11 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/623,995Filed 21 Sep 2012 · continuation in part
Priority: 18 Mar 2010
Published: US 2013/0074814 A128 Mar 2013
Granted: 12 Apr 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

F02M 26/32
Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials: liquid-cooled heat exchangers
F02M 26/28
Layout, e.g. schematics: with liquid-cooled heat exchangers
F28D 7/1684
The conduits being arranged in parallel spaced relation: the conduits having a non-circular cross-section
F28F 1/022
Tubular elements of cross-section which is non-circular: with multiple channels

Family

Application61/315,055Us provisional application · filed 18 Mar 2010
Application13/051,128Parent of this continuation-in-part · filed 18 Mar 2011
US 2013/0074814 A1Pre-grant publication · published 28 Mar 2013
US 8,844,504 B2Parent of this continuation-in-part
US 2011/0226222 A1Published application
US 9,309,839 B2This patent

From the US filing history. Foreign family members aren’t listed.