Scroll vacuum pump and scroll vacuum pump system

A scroll vacuum pump, comprising

• a pump system that comprises a stationary spiral component and a movable spiral component cooperating with said stationary spiral component in a pump-active manner;
• a drive shaft that rotates about an axis of rotation during operation and that has an eccentric section for driving the movable spiral component;
• and
• an electric drive motor for the drive shaft,
• wherein the drive shaft is provided with a front balancing weight and with a rear balancing weight, and
• wherein the front balancing weight and the rear balancing weight differ from one another with respect to materials from which they are made.

A scroll vacuum pump comprising

• a pump system that comprises a stationary spiral component and a movable spiral component cooperating with said stationary spiral component in a pump-active manner;
• a drive shaft that rotates about an axis of rotation during operation and that has an eccentric section for driving the movable spiral component;
• and
• an electric drive motor for the drive shaft,
• wherein the stationary spiral component comprises a spiral arrangement, which has spiral walls and a spiral base, and a support for the spiral arrangement,
• wherein, in the support, an outlet channel is formed that is formed by an inlet opening formed in the spiral base and that leads to an outlet of the support, and
• wherein, in the support, in addition to the outlet channel, at least two bypass channels are formed which each lead from a bypass opening formed in the spiral base to an outlet of the support and in each of which at least one pressure relief valve is arranged.

A scroll vacuum pump comprising

• a pump system that comprises a stationary spiral component and a movable spiral component cooperating with said stationary spiral component in a pump-active manner;
• a drive shaft that rotates about an axis of rotation during operation and that has an eccentric section for driving the movable spiral component;
• and
• an electric drive motor for the drive shaft,
• wherein the stationary spiral component comprises a spiral arrangement, which has spiral walls and a spiral base, and a support for the spiral arrangement,
• wherein, in the support, an outlet channel is formed that leads from an inlet opening formed in the spiral base to an outlet of the support, and
• wherein, in the support, in addition to the outlet channel, at least two bypass channels are formed that each lead from a bypass opening formed in the spiral base to the outlet channel.