CROSS-FLOW FAN FOR SUCTION AND DISCHARGE DISTRIBUTED NETWORK Russian patent published in 2002 - IPC

FIELD: mechanical engineering; fans. SUBSTANCE: invention relates to distributed ventilation systems and plants used for pneumatic transportation of grainy bulk materials. Proposed fan has scroll housing closed from end faces with inlet and outlet branch pipes and impeller with curvilinear forward curved blades. Inlet branch pipe, scroll housing and outlet branch pipe are divided by cross partitions, and impeller is divided by blind disks into number of sections. Corresponding cross partitions of inlet branch pipe, scroll housing and outlet branch pipe and blind partitions of impeller are arranged opposite to each other. In sections, parameters of curvilinear blades of impeller or their number or said parameters of impeller blades and their number are different. EFFECT: increased pressure built by fan and efficiency of fan. 1 dwg