| 摘要 |
PURPOSE: A ventilation system for a subway tunnel is provided with ten times better effects comparing to an existing ventilation system as fresh air from the outside is supplied to the subway tunnel at a middle point between subway stations. CONSTITUTION: A ventilation system for a subway tunnel comprises a case socket for an air suction net, a right angle elbow, an upper case(119), a lower case, a first pipe(104), a second pipe, a filter, and a fan motor(116). The filter is installed on the inner sides of the upper and lower cases, and filters air flowing from the outside through the first pipe. The fan motor delivers the filtered air to the subway tunnel through the second pipe. An upper socket for connecting the lower part of the first pipe to the upper part of the upper case is formed, and the lower part of the first pipe is connected to the upper socket.
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