Tangential intake and exhaust valve

The invention discloses a tangential intake and exhaust valve, and relates to the field of valves, a valve flow channel for airflow to pass through is formed between a flow channel inner side face and a flow channel outer side face, and an intake pipe and an exhaust pipe are arranged at the two ends of the valve flow channel respectively; fluid entering the valve flow channel can flow out of the exhaust pipe from the end connected with the air inlet pipe in a spiral shape under the action of the valve flow channel; the valve runner is sequentially divided into an air inlet area, a middle area and an exhaust area in the direction of the axis. The air inlet pipe is tangentially connected to the air inlet area through the outer side face of the flow channel, and the cross section area of the valve flow channel in the air inlet area is linearly decreased in the circumferential direction from the joint of the valve flow channel and the air inlet pipe to the middle area. According to the tangential air inlet and ou