THERMAL CHAMBER FOR TESTING OF ELECTRONIC PRODUCTS Russian patent published in 2015 - IPC H01L21/66 

FIELD: electricity.

SUBSTANCE: thermal chamber includes a housing, in which an arrangement is made for a working chamber, a fan, a recirculating air cleaning assembly installed in a delivery branch pipe and made in the form of coaxially connected converging diffuser with screw-shaped grooves on the inner surface and a divergent nozzle in which a drying device in the form of a reservoir is arranged; the fan is provided with a drive with a rotation speed control connected to outputs of a temperature control and a pressure control, and temperature and pressure sensors connected to the temperature and pressure controls respectively, each of which includes a comparison unit and a setting unit, a rectifier that is connected at the input to the speed control in the form of a unit of powder electromagnetic couplings of the fan drive. On the inner surface of the divergent nozzle there are screw-shaped grooves; the recirculating air cleaning assembly is provided with a net made from bimetal, installed after the internal annular groove at the input of the converging diffuser and connected to a contamination accumulator. A thin-fibre basalt material made in the form of woven bundles as to height of the housing is located on the outer surface of the housing.

EFFECT: providing a possibility of maintaining an optimum temperature mode for testing of electronic products at continuous operation.

5 dwg