Double-ring airflow closed auxiliary smoke exhaust system for kitchen

The invention discloses a double-ring airflow closed auxiliary smoke exhaust system for a kitchen. By a unique design of the double-ring airflow closed auxiliary smoke exhaust system for the kitchen, five groups of airflow colliding each other can be generated to form air piston traction in the horizontal direction, so that smoke trying to overflow returns to an action range of a smoke hood to be sucked and passes through collision between the airflow. Piston flow is generated, the smoke trying to overflow is driven back to a gathering area of the smoke hood, a safe and sanitary environment is generated around the smoke hood, and a healthy and safe working environment is created for a kitchen worker finally. In addition, a small air quantity can be used and high-efficiency smoke prevention and exhaust is realized under the condition that the system is combined with the smoke hood of the kitchen.