METHOD FOR OPERATING AN OIL-TIGHT VACUUM PUMP AND OIL-TIGHT VACUUM PUMP

摘要

In a method for operating an oil-tight vacuum pump, the total suction pressure present in a suction channel (22) of the vacuum pump is measured in a first step. In order to minimize the danger of a backflow of oil vapor into a vacuum region connected to the suction channel, the rotational speed of the vacuum pump is controlled as a function of the measured total suction pressure within a predetermined pressure range. The invention further relates to an oil-tight vacuum pump, wherein the suction channel (22) of the vacuum pump connected to the pump chamber is designed in a curved manner directly in front of an inlet (36) opening.