FORCED-DRAFT REVERSE DEVICE FOR THE CONVECTION HEATING OR COOLING OF THE METAL IN THE THERMAL FURNACE Russian patent published in 2007 - IPC F27D7/04 

FIELD: metallurgy industry; production of the forced-draft reverse devices for convection heating or cooling of the metal in the thermal furnaces.

SUBSTANCE: the invention is pertaining to the thermal equipment, in particular, to the recirculation furnaces and may be used also for circulation of the air or the gases in other aggregates. For reduction of expenditures used for installation of the forced-draft reverse device in the furnace, reduction of the operational costs at the sufficient reliability of operation the forced-draft reverse device includes two similar to each other connected among themselves centrifugal blowers, each of which has the with the blades and located in the spiral jacket. The device is made with the horizontal location of the axes of rotation of the impellers. At that the blowers are connected with each other by means of intercommunicating spiral jackets. At operation the device periodically changes the direction of the gas medium motion inside the furnace volume, ensuring thereby the fast and uniform heating or cooling of the processed metal.

EFFECT: the invention ensures reduction of expenditures used for installation of the forced-draft reverse device in the furnace, reduction of the operational costs at the sufficient reliability of its operation.

3 cl, 7 dwg