Patent Application Accepted For Solar Manufacturing's New 20 Bar Furnace Design

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New 20 bar vacuum furnace design patent application accepted.

Solar Manufacturing Inc. announces that their patent application for a new 20 Bar vacuum furnace has been accepted (Application Number 13/573,001 dated August 13, 2012) by the United States Patent and Trademark Office. The application covers several aspects of a unique design that will provide optimum cooling performance using different gasses at pressures ranging from 2 to 20 Bar. Features of this new furnace include:

  • Sliding rear graphite hot zone baffles to minimize radiation losses when closed and provide direct gas flow to the heat exchanger when opened. There are no standard fixed exit baffles to restrict gas flow.
  • A chevron-type diffuser installed before the heat exchanger to minimize radiation loss during cooling and to provide optimum gas flow distribution to the heat exchanger.
  • A highly-efficient and more compact heat exchanger incorporating high surface area per unit volume.
  • A design that provides maximum available cooling motor horse power (HP) by reducing pressure drops throughout entire system allowing for maximum acceleration of cooling gas through the tapered nozzles.
  • A plenum-less design that allows for better and more uniform gas flow and distribution throughout the entire hot zone.

-The optimum utilization of the 300 HP cooling motor performance with the inclusion of a VFD ( variable frequency drive ) and the ability to cool at various backfill pressures while continuously varying motor speeds to achieve constant maximum HP.


Solar Manufacturing designs and manufactures all types of vacuum heat treating and brazing furnaces and offers replacement hot zones and spare parts for various vacuum furnace brands. To learn more about the new 20 Bar furnace or any other equipment in our diverse line of products and services, contact Pete Reh, VP of Sales, at 267-384-5040 or pkr(at)solarmfg(dot)com. Additional information can be found on our web site –    


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Laura Edwards
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