SLOT CHAMBER FOR HEAT TREATMENT OF CONCRETE ARTICLES Russian patent published in 1995 - IPC

FIELD: reinforced concrete article production. SUBSTANCE: during heat treatment of reinforced concrete article artificial turbulization of moving gas flow is performed with the aid of specially constructed suspension rising-lowering ceiling and stationary floor of chamber. The ceiling equipped with a drive for its vertical movement is made in the form of a system of bevelled reducers and diffusers coupled in series with each other. Such a construction serves as aerodynamic auger for moving medium of gas flow (in contrast to mechanical augers from twisted tape). In lowered state of the ceiling a heat-transfer agent moving in the space between the ceiling and cars and between the flow and cars is rejected by the bevelled ribs of diffusers to the articles and is curled into turbulent whirls which intensify heat exchange between the medium and concrete. EFFECT: enhanced efficiency due to reduced heating cycle, reduced specific gas consumption per product item due to reduced heat power of generators. 2 dwg