Modine Manufacturing Company

Robert J DeGroot

Steven Meshenky

Gregg D Olson

Peter C Kottal

Robert Barfknecht

LeRoy Goines

Dan R Raduenz

Martin John Riniker

Michael P Devine

James R Prochniak

Gregory DaPra

Craig D Endres

Thomas M Shields

Biao Yu

Daniel R DeRosia

Rachel Olsonawski

A heat exchanger () is provided and in a highly preferred form is an EGR cooler () having first and second passes (A,B) that are connected to an inlet/outlet manifold () by a pair of corresponding thermal expansion joints () to allow differential thermal expansion between the various structural components of the heat exchanger ().

2-Pass heat exchanger including thermal expansion joints

A heat exchanger and mount isolation system () is provided and includes a heat exchanger () for a vehicular application, a pair of side frame members () for mounting the heat exchanger () to a vehicle, and four pairs () of isolation mount assemblies () for mounting the heat exchanger () to the side frame members (). The mount assemblies () are received in mounting bores () that are integral parts of the heat exchanger (). Each of the pairof mount assemblies () is inserted into the opposite ends () of a corresponding one of the mount bores () and includes a pair of abutting metal sleeves () that are mounted in respective annular flanged isolators ().

Radiator and isolation and mount system

A header plate () is provided for receiving the flattened tubes () of a heat exchanger. The header plate () includes a plurality of tube receiving openings (), with each of the openings being surrounded by a flange or collar () that extends from a base wall () of the header plate () towards the heat exchanger core () to surround the exterior cross section of the associated tube (). Each of the flanges () is shaped to conform to the exterior of the associated tube (), and a blend radius R is provided at the interface between the base wall () and the flange (). The blend radius R has a size that increases from a radius Rcentral to the length of a long side wall () of the flange () to a radius Rcentral to the length of a short side wall () of the flange ().

Header plate for use in a heat exchanger

A tank to header attachment construction for heat exchangers include T-shaped tabs on the header which extend through slots in a flange on a tank. The top bar of each tab has it ends bent out of alignment with the slot to secure the tank to the header.

Plastic tanked heat exchanger-side, header tank assembly

Difficulties in obtaining consistent bonds of high quality between side pieces and tubular headers ( ), ( ) in heat exchangers are avoided in a side piece ( ) that extends between the headers ( ), ( ) and which has circular recesses ( ) at each end ( ), ( ). The recesses ( ) define resilient fingers ( ), ( ) which may separate to receive the ends of the headers ( ), ( ) and frictionally grasp the same, eliminating the need for fixturing at this location and assuring a strong consistent gripping of the headers ( ), ( ), by the end piece ( ) to assure consistent bonds of high quality.

Side piece for heat exchangers

Growing community of inventors

Milwaukee, WI, United States of America

Robert J DeGroot