| 摘要 |
A fluid treatment apparatus and a fluid treatment method, the apparatus comprising a treatment container (4) having a loading table (8) for loading a treated body (W) thereon, a gas introducing means (10) introducing treatment gas into the treatment container, treatment gas feed systems (14, 16, 18) feeding specified treatment gases, an inert gas feed system (12) feeding inert gas, a vacuum exhaust system (32) in which a pressure regulating valve (36) allowing a valve opening to be varied and a vacuum pump (38) are installed, and a pressure gauge (48), wherein when a treatment in which the partial pressure of the treatment gas is important is performed, the valve opening of the pressure regulating valve (36) is controlled based on the detected values on the pressure gauge (48) while the treatment gas flows at a specified rate and when a treatment in which the partial pressure of the treatment gas is not so important, the valve opening of the pressure regulating valve (36) is fixed to a specified value and, based on the detected values on the pressure gauge (48), the supplied amount of the inert gas is controlled, whereby even when a plurality of types of the treatments in which the ranges of treatment pressures are largely different from each other are performed, the pressure controls of the treatments can be properly performed.
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