Portion capsule

Abstract

A filter element for a portion capsule is insertable into a base element that is designed in a beaker-like manner and that, together with a capsule cover, which is fastened to the base element after inserting the filter element, defines an outer capsule wall. The filter element is designed such that it divides the capsule interior between an extraction material region and a collecting region, which is formed between the filter element and the outer capsule wall. The filter element forms a filter plate and a two-dimensional frame of struts, which run along the filter plate and meet one another at an angle, wherein the struts have a cross section that reduces radially outwards.

1 . A filter element for a portion capsule with a base element and with a capsule cover that cooperate to define an outer capsule wall, said filter element being, for separating a collecting region from an extraction material region in a capsule interior, insertable into the base element, wherein the filter element comprises a fluid-permeable filter plate and a plurality of struts which run along the filter plate, wherein the struts form a two-dimensional frame of struts that meet one another at an angle. 
     
     
         2 . The filter element according to  claim 1 , wherein the struts have a cross section which reduces towards radially outwards with respect to the filter plate. 
     
     
         3 . The filter element according to  claim 2 , wherein the cross section of the struts reduces radially to the outer side by way of the extension perpendicular to the filter plate reducing while the width of the struts is constant. 
     
     
         4 . The filter element according to  claim 1 , further comprising a central element, wherein the frame of the struts runs up to the central element and is connected thereto. 
     
     
         5 . The filter element according to  claim 4 , wherein the central element is formed by a projection of the filter element towards the extraction material region. 
     
     
         6 . The filter element according to  claim 1 , wherein the frame forms a honeycomb structure. 
     
     
         7 . The filter element according to  claim 1 , wherein the frame is present on an extraction material region side of the filter plate. 
     
     
         8 . The filter element according to  claim 7 , wherein a plurality of spacers is arranged on a collecting region side of the filter plate, which collection region side lies opposite the extraction material region side. 
     
     
         9 . The filter element according to  claim 1 , which as a whole is designed in a beaker-like manner and comprises a side wall, which connects onto the filter plate at the outer side. 
     
     
         10 . A portion capsule, comprising a beaker-like base element and cover being connected along a peripheral edge, wherein a filter element according to  claim 1  is inserted into the base element and separates an extraction material region, which is filled with extraction material, from a collecting region. 
     
     
         11 . The portion capsule according to  claim 10 , wherein the filter element is positively, materially and/or non-positively fastened to the base element. 
     
     
         12 . The portion capsule according to  claim 10 , comprising a distributing element that is inserted in the base element and delimits the extraction material region to an injection side and thus defines a distributing region. 
     
     
         13 . The portion capsule according to  claim 10 , wherein the base element defines a capsule base and a side wall, and wherein the filter element is arranged between the capsule base and the extraction material region. 
     
     
         14 . The filter element according to  claim 2 , further comprising a central element, wherein the frame of the struts runs up to the central element and is connected thereto. 
     
     
         15 . The filter element according to  claim 14 , wherein the central element is formed by a projection of the filter element towards the extraction material region. 
     
     
         16 . The filter element according to  claim 3 , further comprising a central element, wherein the frame of the struts runs up to the central element and is connected thereto. 
     
     
         17 . The filter element according to  claim 16 , wherein the central element is formed by a projection of the filter element towards the extraction material region. 
     
     
         18 . The filter element according to  claim 2 , wherein the frame is present on an extraction material region side of the filter plate. 
     
     
         19 . The filter element according to  claim 3 , wherein the frame is present on an extraction material region side of the filter plate. 
     
     
         20 . The filter element according to  claim 4 , wherein the frame is present on an extraction material region side of the filter plate.