AIR BLEEDING MECHANISM OF COOLING WATER PATH, AND PROCESSING DEVICE

To discharge air remaining in a cooling water path without unstabilizing a pressure of cooling water flowing in the cooling water path.SOLUTION: An air bleeding mechanism can eliminate air in a cooling water path in a cooling mechanism, wherein the cooling mechanism includes the cooling water path where cooling water flows, a tank for storing the cooling water, and a pump for making the cooling water stored in the tank flow in the cooling water path, the cooling water path includes a supply path and a discharge path, the air bleeding mechanism has a branch mechanism branched into an inflow path, an upward path and a downward path, an exhaust path whose one end is connected to the upward path and the other end has an exhaust port, a sensor for detecting gas flowing in the exhaust path, and an opening/closing mechanism for opening/closing the exhaust path, the opening/closing mechanism makes the exhaust path open when the sensor detects air in the exhaust path, and makes the exhaust path close when the sensor does not detect the air in the exhaust path.SELECTED DRAWING: Figure 3 【課題】冷却水路に流れる冷却水の圧力を不安定化させることなく冷却水路に残存するエアを排出する。【解決手段】冷却機構において冷却水路中のエアを排除できるエア抜き機構であって、該冷却機構は、冷却水が流れる該冷却水路と、該冷却水が貯留されるタンクと、該タンクに貯留された該冷却水を該冷却水路に流すポンプと、を備え、該冷却水路は、供給経路と、排出経路と、を備え、該エア抜き機構は、流入路と、上向き路と、下向き路と、に分岐する分岐機構と、一端が該上向き路に接続され他端に排気口を備える排気路と、該排気路に流れる気体を検知するセンサと、該排気路を開閉する開閉機構と、を有し、該開閉機構は、該センサが該排気路中のエアを検知したときに該排気路を開状態とし、該センサが該排気路中のエアを検知しないときに該排気路を閉状態とする。【選択図】図３