| 摘要 |
The present invention relates to a disc-shaped filter element and to a method to provide a disc-shaped filter element. A disc-shaped filter element has a diameter K and comprises two ring-like shaped, liquid permeable support members having an outer edge having a diameter Ds and an inner edge, having a largest width Ws. The filter element comprises a first and a second ring shape-like filter membrane with outer and inner edges, being supported by the support members. The inner edges of the support members and the inner edges of the filter membranes are liquid tight coupled to the coupling means of a hub. The first surface of the first support member and the second surface of the second support member are separated from each other over a distance H at the outer wall of the hub. The support member are provided with a radius of curvature r being smaller of equal to (K 2 /4H)+H/4 along at least a zone of the support member, which zone is delimited by a first imaginary circle along the support member having a diameter of 0.9*Ds and a second imaginary circle along the support member having a diameter of 1.1*Ws, which imaginary circles being concentric with the disc-like support member |
