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US 10,711,445 B2Granted
Suction device for a wastewater tank
AssigneeHugo Vogelsang Maschinenbau GmbH
InventorsBilal Zein, Martin Heinrichs
Life of this patent
Estimating the term…
Abstract
The invention relates to a sanitary arrangement, in particular, a mobile sanitary arrangement in a motor vehicle such as a coach, having a wastewater-collection tank which has a floor and a sidewall that enclose a tank interior, and an inlet connection and an outlet device. The outlet device has an outlet opening with a connection coupling for the connection of a suction-extraction arrangement and a suction-extraction channel, which, starting from the outlet opening, extends downward in the direction of gravitational force to an intake opening within the wastewater-collection tank.
Claims14
A sanitation system for a vehicle with a wastewater collection tank, the wastewater collection tank further comprising:
- a floor and a sidewall enclosing an interior of the wastewater collection tank;
- an inlet connection;
- and
- an outlet device, wherein the outlet device further comprises an outlet opening with a connection coupling for connecting a suction-extraction device, and a suction-extraction channel extending from the outlet opening in the direction of gravity down to an intake opening within the wastewater collection tank;
- wherein one or more intake openings are formed by apertures of which a through-passage cross section is delimited by the floor of the wastewater-collection tank and by an intake-opening periphery, wherein the intake-opening periphery is connected to a moveable negative-pressure surface and is retained in a first, lowered position by means of prestressing, and whereby:
- the intake opening in the first position, in which a first negative suction pressure in the suction-extraction channel acts on the negative-pressure surface, is arranged at a first distance from the tank floor;
- and
- the intake opening in a second position, in which a second negative suction pressure in the suction-extraction channel acts on the negative-pressure surface, said second negative suction pressure being higher than the first negative suction pressure, is arranged at a second distance from the tank floor, said second distance being greater than the first distance, in that the second negative suction pressure acting on the negative-pressure surface subjects the intake-opening periphery to a lifting force that acts counter to the prestressing and raises the intake-opening periphery to cause the through-passage cross section to be increased.
5 more elements
A sanitation system for a vehicle with a wastewater collection tank, the wastewater collection tank further comprising:
- a floor and a sidewall enclosing an interior of the wastewater collection tank;
- an inlet connection;
- and
- an outlet device, wherein the outlet device further comprises an outlet opening with a connection coupling for connecting a suction-extraction device, and a suction-extraction channel extending from the outlet opening in the direction of gravity down to an intake opening within the wastewater collection tank;
- wherein the intake opening is formed on a suction bell, of which the cross section dimension in a plane parallel to the plane of the tank floor is greater than the cross section dimension of the suction-extraction channel in a plane parallel to the plane of the tank floor.
2 more elements
A wastewater-collection tank for a vehicle having a sanitary system installed therein, comprising:
- a floor and a sidewall that enclose a tank interior;
- an inlet connection;
- and
- an outlet device, wherein the outlet device further comprises:
- an outlet opening with a connection coupling for the connection of a suction-extraction arrangement;
- and
- a suction-extraction channel that extends from the outlet opening downward in the direction of gravitational force to an intake opening within the wastewater-collection tank;
- wherein one or more intake openings are formed by apertures of which a through-passage cross section is delimited by the floor of the wastewater-collection tank and by an intake-opening periphery, wherein the intake-opening periphery is connected to a moveable negative-pressure surface and is retained in a first, lowered position by means of prestressing, and whereby:
- the intake opening in the first position, in which a first negative suction pressure in the suction-extraction channel acts on the negative-pressure surface, is arranged at a first distance from the tank floor;
- and
- the intake opening in a second position, in which a second negative suction pressure in the suction-extraction channel acts on the negative-pressure surface, said second negative suction pressure being higher than the first negative suction pressure, is arranged at a second distance from the tank floor, said second distance being greater than the first distance, in that the second negative suction pressure acting on the negative-pressure surface subjects the intake-opening periphery to a lifting force that acts counter to the prestressing and raises the intake-opening periphery to cause the through-passage cross-section to be increased.
8 more elements
A retrofittable suction-extraction arrangement for a wastewater-collection tank of a sanitary system installed in a vehicle, comprising:
- an inlet connection;
- and
- an outlet device, wherein the outlet device further comprises an outlet opening with a connection coupling for the connection of a suction-extraction arrangement, and a suction-extraction channel that extends from the outlet opening downward in the direction of gravitational force to an intake opening within the wastewater-collection tank;
- wherein one or more intake openings are formed by apertures of which a through-passage cross section is delimited by the floor of the wastewater-collection tank and by an intake-opening periphery, wherein the intake-opening periphery is connected to a moveable negative-pressure surface and is retained in a first, lowered position by means of prestressing, and whereby:
- the intake opening in the first position, in which a first negative suction pressure in the suction-extraction channel acts on the negative-pressure surface, is arranged at a first distance from the tank floor;
- and
- the intake opening in a second position, in which a second negative suction pressure in the suction-extraction channel acts on the negative-pressure surface, said second negative suction pressure being higher than the first negative suction pressure, is arranged at a second distance from the tank floor, said second distance being greater than the first distance, in that the second negative suction pressure acting on the negative-pressure surface subjects the intake-opening periphery to a lifting force that acts counter to the prestressing and raises the intake-opening periphery to cause the through-passage cross section to be increased.
4 more elements
A method for emptying a wastewater-collection tank of a vehicle having a sanitary system installed therein, the method comprising the steps of:
- arranging an intake opening within the wastewater-collection tank, above a tank floor;
- connecting a suction-extraction arrangement to an outlet opening using a connection coupling;
- and
- extracting wastewater by suction from the wastewater-collection tank through a suction-extraction channel that connects the outlet opening to the intake opening and extends from the outlet opening downward in the direction of gravitational force to the intake opening;
- wherein the one intake opening is formed on a suction bell and is delimited by the tank floor and by an intake-opening periphery, which is connected to a negative-pressure surface which is subjected to a negative suction pressure in the suction-extraction channel, and therefore the intake-opening periphery, and wherein:
- at a first negative suction pressure in the suction-extraction channel, the intake periphery is retained, by means of prestressing, in a first position, in which the intake-opening periphery is arranged at a first distance from the tank floor;
- and
- at a second negative suction pressure in the suction-extraction channel, said second negative suction pressure being higher than the first negative suction pressure, the negative-pressure surface subjects the intake-opening periphery to a lifting force, which acts counter to the prestressing, and therefore, at the second negative suction pressure, the intake-opening periphery is moved into a second position, in which the intake-opening periphery is arranged at a second distance from the tank floor, said second distance being greater than the first distance.
5 more elements
Dependencies are inferred from the claim text.