Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
1999-08-18
2001-03-27
LaBalle, Clayton (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S064000, C310S062000, C310S06700R, C165S121000
Reexamination Certificate
active
06208052
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to cooling modules for electronically controlled engines and, more particularly, to cooling modules having fewer parts and short overall axial lengths.
BACKGROUND OF THE INVENTION
Typical cooling modules for vehicle engines generally include three separate parts: a fan, an electric motor to drive the fan, and a shroud to cover the blades of the fan and to mount the module. An example of such a module is shown in U.S. Pat. No. 4,548,548 to Gray, III. The structure disclosed in the Gray, III patent includes a motor that is not easily integrated with the fan and shroud, which results in a module having a significant overall axial length.
In certain applications, due to space and environmental constraints, it is desirable to provide an engine cooling module of reduced axial length and, to reduce costs, having reduced number of module parts.
Accordingly, there is a need to provide an improved cooling module for an electronically controlled engine which has a motor integrated with a fan and shroud to provide a module having a reduced axial length and fewer parts.
SUMMARY OF THE INVENTION
An object of the present invention is to fulfill the need referred to above. In accordance with the principles of the present invention, this objective is obtained by providing a cooling module including a fan having a plurality of blades. A shroud structure is spaced from and generally adjacent to the blades. A brushless electric motor rotates the fan. The motor includes a heat sink structure coupled to the shroud structure and defines a base of the motor. A shaft is fixed to the heat sink structure. A rotor is mounted for rotation with respect to the shaft. The fan is coupled to the rotor. Magnets are fixed in relation to the rotor so as to rotate with the rotor. A lamination core is fixed to the heat sink structure. A winding is wound about the lamination core and is operatively associated with the magnets. The structure and arrangement of the cooling module provides a reduced overall axial length of the module and fewer module parts than conventional cooling modules.
Other objects, features and characteristics of the present invention, as well as the methods of operation and the functions of the related elements of the structure, the combination of parts and economics of manufacture will become more apparent upon consideration of the following detailed description and appended claims with reference to the accompanying drawings, all of which form a part of this specification.
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Horski Marek
Kershaw Peter A.
LaBalle Clayton
Siemens Canada Limited
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