EXHAUST REFLUX CONTROL DEVICE

摘要

PURPOSE:To maintain the function of a valve by directly cooling the stepping motor section of the flow rate control valve with its structure simplified. CONSTITUTION:The device is provided with a flow rate control valve which controls valve opening through motion conversion means 2A and 5A converting the rotating motion of a rotor 24 into a linear motion wherein a stepping motor section 2 and a valve function section 3 are directly connected with each other by housings 2A and 3A for both of them. The aforesaid motor housing 2A is made of material high in thermal conductivity, and is provided with cooling water passages 4A and 4B.