Browse Prior Art Database

Inexpensive Omnidirectional Heat Sink

IP.com Disclosure Number: IPCOM000115446D
Original Publication Date: 1995-May-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 64K

Publishing Venue

IBM

Related People

Buller, ML: AUTHOR [+2]

Abstract

Disclosed here is an omnidirectional heat sink produced from flat strip material by progressive die tooling. The utility of such a heat sink is that since the direction of airflow over an electronic device cannot easily be ascertained early in the design process it is desirable to produce heat sinks such that air can flow through and over them easily from several directions. This characteristic assists both the initial design, since air flow direction is no longer a consideration, as well as manufacturing, because problem of orientation during assembly is eliminated. Currently this is done by taking extruded heat sinks and, by a secondary machining process, cutting channels transverse to the extruded channels, producing an array of vertical columns.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Inexpensive Omnidirectional Heat Sink

      Disclosed here is an omnidirectional heat sink produced from
flat strip material by progressive die tooling.  The utility of such
a heat sink is that since the direction of airflow over an electronic
device cannot easily be ascertained early in the design process it is
desirable to produce heat sinks such that air can flow through and
over them easily from several directions.  This characteristic
assists both the initial design, since air flow direction is no
longer a consideration, as well as manufacturing, because problem of
orientation during assembly is eliminated.  Currently this is done by
taking extruded heat sinks and, by a secondary machining process,
cutting channels transverse to the extruded channels, producing an
array of vertical columns.  However, this is an expensive method
since it requires a secondary machining operation.  Omnidirectional
heat sinks can also be produced by casting.  However, casting is also
a costly process, particularly if mechanical finishing operations are
necessary to meet dimensional requirements.  An omnidirectional heat
sink produced by inexpensive manufacturing methods and designed for
automated production would be desirable.

      The omnidirectional heat sink here disclosed is produced in a
progressive die set.  In such tooling the strip of material is
handled much like a strip of film, moved from die station to die
station with additional features being formed at each...