Delphi Technologies Inc.

The requirement for more efficient heat exchanger designs led to integrating two heat exchangers into one assembly. The integrated unit of the Delphi Improved Heat Exchanger Design provides material and labor savings in both manufacturing and installation compared to that required for separate heat exchangers. A dual radiator and condenser provide optimal structural and thermal capability. Both units are interconnected so that the assembly goes through one brazing, assembly and installation process. An oil cooler integrally extruded into a radiator tank provides cost savings benefits. The integral design eliminates the conventional type oil cooler.

Delphi's improved heat exchanger designs are efficient, cost-effective methods for improving automobile passenger comfort. Other applications can also benefit from these quality and cost-efficient designs.

Specific Technologies

Evaporator with improved cooling performance
This design uses a refrigerant evaporator for a motor vehicle air conditioning and ventilating system with an air inlet face that receives a non-uniform airflow pattern from a radial air blower. The evaporator uses refrigerant passes with flow areas and volumes selected to contract the refrigerant flow at the outlet of the evaporator. This will produce more refrigerant cooling in the portion of the evaporator core that receives higher airflow. This creates uniform outlet air temperature distribution from the evaporator into the vehicle interior. This technology is an efficient, cost-effective method to improve cooling performance.

Heat exchanger with a two-piece manifold assembly
This is an improved two-piece manifold assembly for a heat exchanger with a circular internal cross section. Simple circular separators are installed in any orientation and location without piercing or affecting the seal of either the header or tank. The semi-cylindrical tank and header mate along their longitudinal edges. The mating inner surfaces of the header and tank pair have matching grooves, allowing the installation of a separator in the shape of a circular disk between the tank and header before the tank and header are joined and brazed. The uniform separators can be installed in any location or orientation without jeopardizing the seal of the header or the tank. This technology offers a manifold assembly with high pressure resistance, easy assembly, improved quality, and material savings.

Potential Applications

Classification

Automotive Components: Miscellaneous

Contact Information

Tim Forbes
[1] 248.813.8065
timothy.forbes@delphi.com