Smoke exhaust control device with combustion chamber

The utility model discloses a smoke exhaust control device with a combustion chamber. The smoke exhaust control device comprises a combustion chamber body, fans and blowing spray nozzles. A middle section of the combustion chamber is of a vertically through Venturi structure, an outer hoop is arranged on the small-aperture outer circumference of the middle of the middle section of the combustion chamber, at least three blowing openings which are communicated with the inside of the combustion chamber are formed in the outer hoop, and the blowing spray nozzles are arranged in the blowing openings and are connected with the fans. The blowing spray nozzles are movably arranged in the blowing openings. Compared with the prior art, the smoke exhaust control device has the advantages that the smoke exhaust control device is simple in structure and low in cost, air barriers can be formed in the combustion chamber, so that flue gas can be stopped from continuing ascending and can be sufficiently combusted in a high-temperature section of the combustion chamber, a combustion ratio can be increased, and the purpose of eliminating harmful compositions such as dioxin in the flue gas can be achieved.