Back to results
US 7,264,720 B2Granted
Pool filter with a pre-filtering unit
AssigneeCase Corporation
InventorDieter Hoffmeier
Life of this patent
Estimating the term…
Abstract
The invention relates to a pool filter comprising a housing, which can be supported on a ground side on the base, a longitudinal axis and a transversal axis, and a water inlet, a channel outlet and a pool outlet which are embodied in the housing wall thereof. A flow path from the water inlet to the pool outlet is embodied in the housing on the filter in the filter system and a filter device is arranged in the flow path. The invention is characterised in that a pre-filtering unit is arranged in the flow path in front of the filter device.
Claims15
A pond filter comprising:
- a housing having a bottom which can be supported on a foundation, and a wall provided with a water inlet, a channel outlet, and a pond outlet, the housing having a transverse X axis and a longitudinal Y axis defining an XY plane which is parallel to the foundation when the bottom is supported on the foundation;
- a flow path between the water inlet and the pond outlet;
- a prefiltration unit installed in the flow path and comprising a flat filter screen which is parallel to the X axis and at an acute angle to the Y axis, thereby defining an upper end and a lower end of the screen;
- a flushing channel connected to the channel outlet and having an inlet opening;
- a flow barrier disposed between the filter screen and the inlet opening of the flushing channel, the flow barrier extending parallel to the X axis over the entire width of the filter screen, wherein the flow barrier is arranged to block intake water in the Y axis during filtration and is overcome by intake water in the Y axis during flushing;
- and
- a filtering device in the flow path downstream of the prefiltration unit.
4 more elements
Dependencies are inferred from the claim text.