Vacuum toilet
AssigneeLufthansa Technik AG
InventorsUwe-Michael Steinmetz, Karlheinz Steinmüller, Thomas Dittmar, Steffen Zang
Life of this patent
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Abstract
A vacuum toilet comprises a toilet bowl (1) and a vacuum pipeline (3) which opens out into said toilet bowl. In the region of the opening (2), the vacuum line (3) has a cross-sectional narrowing in the form of a foreign-body barrier (5) which projects radially into the line interior. Alternatively provided is an insert pipe part (6) which can be inserted into the vacuum pipeline (3) in the region of the opening (2) and has an above-described foreign-body barrier (5).
Claims20
In a vacuum toilet comprising a vacuum system, a toilet bowl (1) and a vacuum pipelines (3) having an opening (2) into the toilet bowl, the improvement comprising the vacuum pipeline (3) having a cross-sectional narrowing in a form of a foreign body barrier (5), wherein the foreign body barrier (5) comprises a rounded projection having a surface with a convex shape projecting radially from an interior wall of the pipeline (3) into the interior of the pipeline (3), the foreign body barrier (5) having sufficient lengths in both a flow direction and a circumferential direction of the pipeline (3) to avoid the surface of the rounded projection having a pointed shape, and the foreign body barrier (5) being arranged in a region of the opening (2) such that any foreign body caught on the barrier is easily accessible from and can be removed again by way of the opening (2) without having to dismantle the pipeline (3).
An insert pipe part insertable into a vacuum pipeline (3) with an opening (2) into a toilet bowl (1) of a vacuum toilet in a region of the opening (2), the insert pipe part (6) comprising a cross-sectional narrowing in a form of a foreign-body barrier (5), wherein the foreign-body barrier comprises a rounded projection having a surface with a convex shape projecting radially from an interior wall of the insert pipe part (6) into the interior of the insert pipe part (6), the foreign body barrier (5) having sufficient lengths in both a flow direction and a circumferential direction of the insert pipe part (6) to avoid the surface of the rounded projection having a pointed shape.
A method of preventing long-term blockage of a vacuum toilet system by a foreign body, comprising providing a cross-sectional narrowing which projects radially into a vacuum pipeline of the toilet system, the cross-sectional narrowing forming a foreign body barrier, wherein the foreign body barrier comprises a rounded projection having a surface with a convex shape projecting radially from an interior wall of the pipeline into the interior of the pipeline, the foreign body barrier having sufficient lengths in both a flew direction and a circumferential direction of the pipeline to avoid the surface of the rounded projection having a pointed shape, and the foreign body barrier being arranged in a region of the pipeline where the vacuum pipeline has an opening into a toilet bowl of the toilet system, such that any foreign body caught on the barrier is easily accessible from and can be removed again by way of the opening without having to dismantle the pipeline.
Dependencies are inferred from the claim text.