Method, control device and vacuum arrangement
According to various aspects of the disclosure, a method may comprise: varying a drive force, by which a chamber valve of a vacuum chamber is held closed, when the vacuum chamber has been evacuated; and aerating the vacuum chamber after the variation of the drive force; transporting a substrate through the chamber valve when the chamber valve has been opened.
1. A method, comprising:
varying a drive force, by which a chamber valve of a vacuum chamber is held closed, when the vacuum chamber is evacuated, wherein the drive force is varied to a value at which the chamber valve has a lower response pressure than an overpressure valve of the vacuum chamber;
aerating the vacuum chamber after the variation of the drive force; and
transporting a substrate through the chamber valve when the chamber valve is opened.
2. The method as claimed in claim 1 , wherein the drive force is generated by a drive device.
3. The method as claimed in claim 2 , wherein the variation of the drive force comprises venting a pressure chamber of the drive device by which the drive force is generated.
4. The method as claimed in claim 1 , wherein the variation of the drive force is performed using a quick air vent.
5. The method as claimed in claim 1 , wherein the variation of a drive force causes a reduction of a contact pressure force of the chamber valve.
6. The method as claimed in claim 1 , wherein the drive force is varied such that the chamber valve is at least partially opened during the aerating of the vacuum chamber, wherein a gas supplied for the aerating of the vacuum chamber at least partially escapes through the at least partially opened chamber valve.
7. The method as claimed in claim 1 , wherein, during the aeration of the vacuum chamber, the substrate is arranged in the vacuum chamber, wherein, during the aeration, the substrate is at a higher temperature than a gas supplied for the aeration of the vacuum chamber.
8. The method as claimed in claim 1 , further comprising:
transporting the substrate into the vacuum chamber when the chamber valve is held closed by the drive force.
9. The method as claimed in claim 8 , further comprising: heating the substrate before it is transported into the vacuum chamber.
10. The method as claimed in claim 1 , wherein the variation of the drive force comprises varying the drive force from a first value to a second value, wherein the second value is substantially zero or is at least less than 50% of the first value.
11. The method as claimed in claim 1 , wherein the variation of the drive force is performed when a pressure difference across the chamber valve is less than 50% of an atmospheric pressure.
12. A method for controlling a drive device for a chamber valve of a vacuum chamber in accordance with multiple operating modes, of which
a first operating mode closes the chamber valve and/or holds the chamber valve closed;
a second operating mode releases the chamber valve so that the chamber valve has a lower response pressure than an overpressure valve of the vacuum chamber;
a third operating mode opens the chamber valve and/or holds the chamber valve opened;
wherein the method comprises:
switching from the first operating mode to the second operating mode when the chamber valve is exposed to a pressure difference which holds the chamber valve closed; and
switching from the second operating mode to the third operating mode after the pressure difference has been reduced.
13. A control device which is configured to carry out the method as claimed in claim 12 .
14. A vacuum arrangement, having:
a control device as claimed in claim 13 ; and
the drive device coupled to the control device.
15. The vacuum arrangement as claimed in claim 14 , wherein the drive device and/or the control device are configured such that an end position damping is implemented, wherein the end position damping decelerates a movement of the drive device when an open state or closed state of the chamber valve is reached.
16. The vacuum arrangement as claimed in claim 15 , wherein the end position damping is implemented by a mechanical damping element and/or by an electrical damping element.
17. The vacuum arrangement as claimed in claim 16 , wherein the electrical damping element is configured to be adjustable.
18. A method comprising:
varying a drive force, by which a chamber valve of a vacuum chamber is held closed, when the vacuum chamber is evacuated;
aerating the vacuum chamber after the variation of the drive force; and
transporting a substrate through the chamber valve when the chamber valve is opened, wherein, during the aeration of the vacuum chamber, the substrate is arranged in the vacuum chamber, wherein, during the aeration, the substrate is at a higher temperature than a gas supplied for the aeration of the vacuum chamber.