Viscous torsional vibration damper comprising cooling channels
AssigneeHasse & Wrede GmbH
InventorsWolfgang Kiener, Joerg Sandig
Life of this patent
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Abstract
The invention relates to a viscous torsional vibration damper comprising a damping housing (1) that surrounds an annular working chamber (7) and can be connected to a machine part that is to be damped. In order to improve the dissipation of heat from the interior of the damper, a fan plate (15) is mounted on at least one flat face of the damper to conduct heat. A plurality of hollow cylindrical cooling channels (17, 18) projects from the plane of the fan plate, said channels creating intense turbulence in the air that is entrained by the rotation, thus intensifying the transfer of heat.
Claims29
-14. (canceled)
A viscous torsional vibration damper, having two faces comprising:
- an annular damper housing, which can be non-rotatably connected with a machine shaft;
- said damper housing surrounding a working chamber for receiving a flywheel;
- and
- said working chamber being filled with a viscous damping medium;
- wherein at least one of the two faces of the torsional vibration damper carries a fan plate with radially inner and radially outer cooling channels, the cooling channels being arranged on at least two concentric graduated circles of the fan plate;
- and
- further wherein the radially inner cooling channels have different geometrical dimensions than the radially outer cooling channels.
A viscous torsional vibration damper, comprising:
- an annular damper housing, which surrounds a working chamber configured to receive a fly wheel and to be filled with a viscous damping medium;
- a fan plate formed on at least one of two faces of the viscous torsional vibration damper, the fan plate having radially inner and radially outer cooling channels arranged thereon in at least two concentric graduated circles, the radially inner cooling channels having different geometrical dimensions than the radially outer cooling channels.
A heat transfer apparatus for use with a viscous torsional vibration damper, comprising:
- a fan plate operatively configured to be arranged on at least one of two face surfaces of the torsional vibration damper when in use;
- wherein the fan plate includes radially inner and radially outer arranged cooling channels, the radially inner and radially outer arranged cooling channels forming two concentric graduated circles on the fan plate;
- and
- wherein the radially inner cooling channels have different geometrically dimensions than the radially outer cooling channels.
The viscous torsional vibration damper according to claim 374, wherein a ratio ca between a radial length l and a width b of the radially outer cooling channels is greater than a ratio ci of the radially inner cooling channels.
Dependencies are inferred from the claim text.