Indoor adaptive ventilation system and method based on multi-vent ventilation modules

An indoor adaptive ventilation system based on multi-vent ventilation modules, comprising at least one multi-vent ventilation module, multi-vent ventilation modules comprise air reversing valves and ventilation ducts, the multi-vent ventilation ducts are connected with the air reversing valves, the air reversing valve comprises a box body, a box cover, a reversing mechanism, a supply air main duct, a return air main duct, a fixed supply air branch duct and multiple variable air direction branch ducts, a cavity is arranged inside the box body, the box cover is buckled at the top of the box body, the reversing mechanism is installed in the cavity, the center of the top of the box cover is connected with the supply air main duct, and the center of the bottom of the box body is connected with the return air main duct;

• the fixed supply air branch duct is connected to one side of the supply air main duct;
• a plurality of variable air direction branch ducts are evenly arranged in circumferential direction of the box body;
• wherein the box body and the box cover are both provided with air outlets, which are respectively connected with the supply air main duct, the return air main duct, the fixed supply air branch duct and a plurality of variable air direction branch ducts;
• wherein there are three variable air direction branch ducts, the center lines of the three variable air direction branch ducts are on the same plane, and the angle between the center lines of adjacent variable air direction branch ducts is 120 degrees;
• wherein the reversing mechanism comprises a center rod, a gear, a motor, longitudinal partitions, a transverse bottom plate and transverse top plates, the center rod is arranged in the cavity and is rotatably connected with the center of the bottom of the box body, the gear is connected to the top of the center rod, the motor is installed at the bottom end of the box cover, and the output end of the motor engages with the gear, there are three partitions, which are evenly distributed in the circumferential direction of the central rod;
• the three partitions divide the cavity into three regions, and the bottom end of one region is connected with the transverse bottom plate, and the top ends of the other two regions are both connected with the transverse top plates.