Festo vacuum generators have a single-stage design and operate according to the Venturi principle, i.e. they use compressed air to generate a vacuum. With the Venturi principle, compressed air is introduced into the ejector and accelerated to supersonic speed in the so-called Venturi gland, a constricted cross-section of the jet nozzle. As soon as the air has passed the jet nozzle, a vacuum is created and the air is sucked in through the intake opening. The compressed air and intake air can escape from the vacuum generator through the female nozzle as exhaust air.
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Vacuum generators that operate according to the Venturi principle belong to the group of pneumatic vacuum generators and can in many cases be integrated directly in a system thanks to their compact design. In contrast to electric vacuum generators that use a pump or blower, pneumatic vacuum generators are operated by compressed air and are thus not dependent on the main power supply. They also have intelligent functions for energy and process control and are particularly suitable for very high accelerations. Festo vacuum generators can achieve different performance levels depending on the workpiece and application.
Festo 的主打产品包括三种结构紧凑、高性价比的真空发生器。真空发生器 OVEL的重量特别轻，有不同的功率水平和真空类型可选，因此可用于多种应用。气控真空发生器 VN 可以直接在工作区域使用，有直管型（管式：真空连接与压缩空气连接平行）和 T 型（标准型：真空连接与压缩空气连接成 90°）两种款型。电控真空发生器 VN 同样可直接用于工作区域，特点是免维护运行，并且由于集成有消音器，运行时噪音更低。更多真空发生器，包括带 IO-Link 和可选的即买即用型真空发生器，参见我们的商城。
我们所有的真空发生器均采用紧凑、坚固耐用的设计。其连接方式有很多种，例如通过QS 快插接头、插装式接头、旋入式螺纹，或通过旋入式消声器。为了获得高灵活性，Festo 真空发生器可以通过螺钉来固定，也可以通过卡在安装板上来间接安装。我们的真空发生器还有许多可选配的功能，能够满足您的每一个需求。