Patent ID: 9127886
Filing Date: 2015-09-08
Classification: F27B,F27D

Abstract:
1. A multistage heating system comprising: a multistage furnace comprising a plurality of furnace units piled up in a vertical direction, each of the furnace units comprising an upper heater and a lower heater that have a shape of a plate, which has a first edge and a second edge opposite from the first edge, and are layered in the vertical direction, a first support pipe disposed on and extending along the first edge, a second support pipe disposed on and extending along the second edge, and a plurality of work support bars disposed over the first and second support pipes and configured to support a work; a first work carrier machine configured to insert a work into each of the furnace units; and a second work carrier machine configured to discharge a work from each of the furnace units, wherein each of the first and second work carrier machines comprises a plurality of work carrier bars extending in a horizontal direction, a horizontal motion device moving the work carrier bars in the horizontal direction, and a vertical motion device moving the work carrier bars in the vertical direction.