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US 2022/0128055 A1Published application
Vacuum pump having a silencer
AssigneeLeybold Aktiengesellschaft
InventorsDieter Kolvenbach, Otmar Cornely, Peter Birch
Life of this patent
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Abstract
A vacuum pump is provided that includes rotor elements arranged in a suction chamber. An outlet duct is connected to an exhaust pipe. For the purpose of silencing, sound expansion spaces are provided in the outlet duct, which are integrated into the pump housing. Alternatively or in addition to these sound expansion spaces, sound expansion spaces may be provided in an inlet duct which is used for the inlet of gas ballast, said sound expansion spaces being preferably likewise integrated into the pump housing.
Claims19
A two-shaft vacuum pump, comprising:
- a pump housing defining a suction chamber and having a gas inlet and a gas outlet,
- rotor elements arranged in said suction chamber for forming a plurality of successive pump stages,
- a discharge duct connected to said gas outlet, and
- at least one sound expansion space arranged between duct sections of said discharge duct, the at least one sound expansion space being partially integrated into said pump housing and partially integrated into a removable pump housing cover, the at least one sound expansion space having at least one change in cross-section.
1 more element
A two-shaft vacuum pump, comprising:
- a pump housing a gas inlet and a gas outlet;
- pump housing cover removably secured to the pump housing to define a suction chamber therein;
- rotor elements arranged in the suction chamber and forming a plurality of successive pump stages;
- a discharge duct connected to said gas outlet;
- and
- a first sound expansion space defined by a change in cross-section of the discharge duct, the first sound expansion space being partially integrated into the pump housing and partially integrated into the pump housing cover.
3 more elements
Dependencies are inferred from the claim text.