发明名称 |
System and method for thermally stress screening products |
摘要 |
The invention is an improvement in a thermal stress screening system of the type using a single type of liquid for alternately transferring heat to and from the product. In the improvement, the product is confined in a single chamber during alternate heat transfer. That is, the system provides "one chamber" thermal stress screening. The system includes a plurality of tanks, one each for hot and cold liquid, and a heat exchanger associated with each tank so that the liquid in a tank is maintained at the proper temperature for stress screening. An improved method for thermally stress screening products, e.g., printed circuit boards, includes the steps of placing the product in a chamber, flowing cold liquid into the chamber, draining the cold liquid from the chamber and flowing hot liquid into the same chamber.
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申请公布号 |
US5294199(A) |
申请公布日期 |
1994.03.15 |
申请号 |
US19920968547 |
申请日期 |
1992.10.29 |
申请人 |
VENTUREDYNE, LTD. |
发明人 |
BOERSEN, HARRY D.;ELDRED, JOHN M.;HAYES, ROBERT K.;JASINSKI, VINCE J.;PATTEE, KIM A.;PETERSON, CLINTON A.;WALCOTT, DAVID L. |
分类号 |
G01N3/60;(IPC1-7):G01N3/60 |
主分类号 |
G01N3/60 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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