Electrically driven vacuum pump, particularly vane cell vacuum pump for motor vehicle, has control and monitoring unit, where opening is formed downstream of check valve, and opening is enclosed by refractory material

摘要

The electrically driven vacuum pump (1) is connected with an aggregate at an inlet port (2) through a connecting line. A negative pressure is generated in the aggregate, where a check valve is arranged between the vacuum pump and the aggregate. A control and monitoring unit is arranged, where an opening is formed downstream of the check valve. The opening is enclosed by a refractory material (6) which melts at a predetermined melting temperature. The refractory material is made of a plastic material, particularly synthetic resin.