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Viscous torsional vibration damper comprising cooling channels

A technology of torsional vibration and cooling channels, applied in the direction of shock absorber, spring/shock absorber, vibration suppression adjustment, etc., can solve problems such as difficult operation, warping, unstable fan impeller, etc., and achieve the effect of improving convection and heat conduction

Inactive Publication Date: 2008-11-26
HASSE & WREDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Channels extending from radially inner to radially outer make the unbonded fan wheel unstable, warped and difficult to handle
It is also considered disadvantageous that the fan impeller and the shock absorber planar surface are joined to each other by spot welding, which is only possible with program-controlled robotic automation

Method used

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  • Viscous torsional vibration damper comprising cooling channels
  • Viscous torsional vibration damper comprising cooling channels
  • Viscous torsional vibration damper comprising cooling channels

Examples

Experimental program
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Embodiment Construction

[0031] figure 1 shows a half-section through a viscous-torsional vibration damper according to the invention, which has a damper housing 1 with a radially inner fastening flange 3 . The shock absorber housing 1 is made of sheet steel or other suitable material and contains, with its outer wall 4 and inner wall 5, an annular working chamber 7 with a slidingly mounted secondary mass (flywheel ring, not shown) and viscous damping medium.

[0032] The fastening flange 3 has fastening holes 9 distributed on the same diameter for mounting screws, whereby the viscous-vibration damper is tightened on a rotating mechanical part, such as a crankshaft to be damped or connected by other means. The central hole 11 is equipped with centering accessories and the like of mechanical parts to be damped. In principle, other non-positive or positive connections of the damper housing to the shaft to be damped are also conceivable.

[0033] in press figure 1 The right side of the working chambe...

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PUM

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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.

Description

technical field [0001] The invention relates to a viscous-torsional vibration damper comprising an annular housing torsionally rigidly connected to a machine shaft, in particular an engine shaft, wherein the housing contains a working chamber for accommodating a flywheel ring and working The cavity is filled with a viscous damper, and at least one of the end faces of the torsional vibration damper is provided with a fan wheel including cooling channels. Such a viscous-torsional vibration damper is disclosed in DE 197 29 489 A1. Background technique [0002] The viscous-torsional vibration damper, hereinafter referred to as the viscous-vibration damper, is usually flanged on the opposite side of the crankshaft of the diesel engine. It should reduce the torsional vibration amplitude of the crankshaft. Due to the vibratory shearing of the damping medium silicone oil inside the shock absorber, the vibrational energy is converted into heat, which has to be dissipated by convect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/173
CPCF16F2222/025F16F15/173
Inventor W·基纳J·桑迪希
Owner HASSE & WREDE