Heat exchanging system having cooling fan, for vehicle
First Claim
1. A heat exchanging system for a vehicle having an engine compartment and an engine disposed in the engine compartment, said heat exchanging system comprising:
- a heat exchanger for performing heat exchange between heat exchanging medium flowing within said heat exchanger and air passing through said heat exchanger;
a cooling fan for blowing air toward said heat exchanger to cool the heat exchanging medium within said heat exchanger;
an electric motor for driving said cooling fan;
an air guiding duct, disposed between said heat exchanger and said cooling fan, for guiding air generated by said cooling fan to pass through said heat exchanger;
a control device having a semiconductor switching element for controlling a rotational speed of said electric motor, and a radiation fin unit for facilitating heat radiation of said semiconductor switching element, wherein;
said control device is attached to an outer surface of said air guiding duct in such a manner that said radiation fin unit is disposed inside said air guiding duct.
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Accused Products
Abstract
A heat exchanging system includes two cooling fans for cooling heat exchanging medium of a heat exchanger, and a control device for controlling rotational speeds of the cooling fans. The control device is attached to an outer surface of a fan shroud so that radiation fins of the control device is disposed inside the fan shroud. Further, the radiation fins of the control device is disposed between two fan accommodating portions each having a cylindrical shape. That is, the control device is disposed in a comparatively large space formed by two fan accommodating portions. Therefore, the control device can be readily attached to the fan shroud on a vehicle, and the size of the radiation fins can be made larger. Thus, the heat exchanging system cools the control device sufficiently while improving ventilation performance of the cooling fans.
45 Citations
20 Claims
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1. A heat exchanging system for a vehicle having an engine compartment and an engine disposed in the engine compartment, said heat exchanging system comprising:
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a heat exchanger for performing heat exchange between heat exchanging medium flowing within said heat exchanger and air passing through said heat exchanger; a cooling fan for blowing air toward said heat exchanger to cool the heat exchanging medium within said heat exchanger; an electric motor for driving said cooling fan; an air guiding duct, disposed between said heat exchanger and said cooling fan, for guiding air generated by said cooling fan to pass through said heat exchanger; a control device having a semiconductor switching element for controlling a rotational speed of said electric motor, and a radiation fin unit for facilitating heat radiation of said semiconductor switching element, wherein; said control device is attached to an outer surface of said air guiding duct in such a manner that said radiation fin unit is disposed inside said air guiding duct. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A cooling fan system for a heat exchanger for performing heat exchange between air passing through said heat exchanger and heat exchanging medium flowing in said heat exchanger, said cooling fan system comprising:
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a cooling fan for blowing air toward said heat exchanger to cool the heat exchanging medium within said heat exchanger; an electric motor for driving said cooling fan; an air guiding duct, disposed between said heat exchanger and said cooling fan to extend from an immediately downstream air side of said heat exchanger toward said cooling fan, for guiding air generated by said cooling fan to pass through said heat exchanger; a control device for controlling a rotational speed of said electric motor; and a radiation fin unit, connected to said control device, for facilitating heat radiation of said control device, wherein; said control device is attached to an outer surface of said air guiding duct in such a manner that said radiation fin unit is disposed inside said air guiding duct. - View Dependent Claims (18, 19, 20)
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Specification