Gas pump with a sealing oil groove

摘要

A gas pump including a first housing part (1) comprising a sealing surface (6); a second housing part (2) comprising a sealing surface (7); a delivery chamber (3) comprising an inlet (4) and an outlet (5) for a gas; and a delivery device (11, 12), which can be moved within the delivery chamber (3), for delivering the gas, wherein the housing parts (1, 2) are joined to each other such that they at least partially enclose the delivery chamber (3) over a circumference of the chamber, and such that their sealing surfaces (6, 7) abut each other in order to seal off the delivery chamber (3), and wherein a sealing recess (9) extends in at least one of the sealing surfaces (6, 7) around the delivery chamber (3) and is filled with a sealing liquid when the gas pump is in operation.

主权项

1. A gas pump, comprising:
a first housing part comprising a first sealing surface; a second housing part comprising a second sealing surface; a delivery chamber comprising an inlet and an outlet for a gas; and a delivery device, which is movable within the delivery chamber, for delivering the gas, wherein the first and second housing parts are joined to each other such that they at least partially enclose the delivery chamber over a circumference of the chamber, and such that the first and second sealing surfaces abut each other in order to seal off the delivery chamber, and wherein a sealing recess extends in at least one of the first and second sealing surfaces around the delivery chamber and is filled with a sealing liquid when the gas pump is in operation; and wherein the gas pump is a negative pressure pump for supplying one or more assemblies with negative pressure and wherein a liquid lubricant, which serves to lubricate the delivery device or seal off delivery cells within the delivery chamber, also forms the sealing liquid.