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Heat generator for automobile vehicles
| Details |
Inventors: Menard, Denis; Herbulot, Jean;
Assignee: 501 Valeo (Paris, FR)
Primary Examiner: Green; Randall L.
Assistant Examiner:
Attorney, Agent or Firm: Brown; Charles E., Brown; Charles A.
A heat generator suitable for heating the cab or passenger compartment of a motorized automobile vehicle comprises an enclosure inside which are mechanical friction means adapted to be driven by the motor of the vehicle. These friction means are operable with a variable clamping force. A heat transfer liquid is circulated through this enclosure. The clamping force of the friction means is varied in inverse proportion to the speed at which friction means are driven by the motor. Thus the clamping force on the friction means is reduced as the motor speed increases, so that the quantity of heat produced is largely independent of the rotation speed of the motor. |
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DETAILED DESCRIPTION We claim: 1.
Heat generator for motorized automobile vehicle comprising an enclosure, mechanical friction means in said enclosure adapted to be driven by the motor of said vehicle and operable with a variable clamping force, means for circulating a heat transfer liquid in said enclosure, and means for varying the clamping force of said friction means in inverse proportion to the speed at which said friction means are driven by said motor.
2.
Heat generator according to claim 1, comprising a shaft in said enclosure, first friction disks constrained to rotate with said shaft and movable along the axis of said shaft, which is coupled to said motor, second friction disks alternating with said first disks and movable in said enclosure in the aforementioned axial direction and prevented from rotating, an axially slidable clamping plate, loading means for urging said clamping plate against said disks so as to clamp them to each other, and means for generating a force conditioned by the speed of said motor opposing the action of said loading means.
3.
Heat generator according to claim 2, wherein said loading means comprise a pre-stressed diaphragm spring adapted to urge said plate against said disks and constrained to rotate with said shaft and further comprising flyweights driven in rotation by said shaft cooperating with said diaphragm spring so as to apply to it a centrifugally conditioned force adapted to reduce the force that it exerts on said plate.
4.
Heat generator according to claim 2, wherein said plate forms a fluid-tight mobile wall of said enclosure in which said heat transfer fluid circulates so that it is acted on by centrifugal pressure originating from said heat transfer fluid itself.
5.
Heat generator according to claim 4, further comprising a variable throughput pump mechanically coupled to said motor and feeding said heat transfer fluid, whereby an increase in the speed of said motor increases the pressure in said enclosure and operative on said plate forming a mobile wall
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