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US 11,235,271 B2Granted
Filter cartridge with venturi nozzle
AssigneeCarl Freudenberg KG
InventorsStefan Kluck, Karsten Schulz, Sascha Schumacher
Life of this patent
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Abstract
A filter cartridge for cleaning an air flow includes a base, a cover provided with a central recess, and at least one pleated filter element arranged between the cover and the base. The at least one filter element encloses an interior space. The cover has a venturi nozzle, and the venturi nozzle engages in the pleated filter element. The venturi nozzle is spread out in comb-like fashion in the region of its end engaging in the filter element.
Claims17
A filter cartridge for cleaning an air flow, the filter cartridge comprising:
- a base,
- a cover provided with a central recess, and
- at least one pleated filter element arranged between the cover and the base, wherein the at least one filter element encloses an interior space,
- wherein the cover has a venturi nozzle, the venturi nozzle engages in the pleated filter element, and the venturi nozzle is spread out in comb-like fashion in the region of its end engaging in the filter element.
1 more element
A filter cartridge for cleaning an air flow, the filter cartridge comprising:
- a base,
- a cover provided with a central recess, and
- at least one pleated filter element arranged between the cover and the base, wherein the at least one filter element encloses an interior space,
- wherein the cover has a venturi nozzle, the venturi nozzle engages in the pleated filter element, and the venturi nozzle has a choke point, such that the choke diameter is smaller than an inflow-side diameter and an outflow-side diameter of the venturi nozzle.
1 more element
Dependencies are inferred from the claim text.