The stabilization of condenser vacuum due to the collaboration of condenser and air extractor, the running status of air extractor is influential to condenser vacuum.

凝汽器内真空的稳定，需要凝汽器和抽气器的联合工作，抽气器的运行状态对凝汽器真空具有相当大的影响。

The technological scheme of the utility model: the device consists of three parts: a preheating pan of constant temperature oil, a vacuum electric frying pan and a vacuum air extractor.

本实用新型的技术方案：该设备由三个部分组成，恒温油预热锅、真空电炸锅、真空抽气机。