HEAT CHAMBER FOR TESTING ELECTRONIC ARTICLES Russian patent published in 2011 - IPC H01L21/66 

FIELD: physics.

SUBSTANCE: heat chamber for testing electronic articles has a housing in which there is a working chamber, a fan inside the working chamber between suction and outlet pipes, a unit for cleaning recycled air in the outlet pipe, which is in form of coaxially joined tapering diffuser with spiral grooves on the inner surface and a diverging nozzle in which there is a drier which is in form of a container filled with adsorbing substance. The fan has a drive with a speed governor, connected to outputs of a temperature regulator and a pressure regulator, and a temperature sensor and a pressure sensor. On the inner surface of the diverging nozzle there are spiral grooves, the tangent to which is directed anticlockwise and the tangent to the spiral grooves on the inner surface of the tapering diffuser is directed clockwise.

EFFECT: high reliability of results of electric tests of electronic articles by maintaining a standard degree of drying recycled air during prolonged operation.

5 dwg