Liquid container

Abstract

A liquid container is provided that has an opening at the bottom for supplying or removing a liquid, and a groove is formed in the container bottom in the container interior in the area of the opening.

1 . A liquid container, comprising:
 an opening at the bottom of the liquid container; and   a groove formed in the bottom in a container interior in an area of the opening.   
     
     
         2 . The liquid container according to  claim 1 , wherein the groove forms a closed curve around the opening. 
     
     
         3 . The liquid container according to  claim 1 , wherein N grooves are formed in addition to the groove in the bottom in the container interior in the area of the opening, and N is less than or equal to three, and the N grooves and the groove are spaced apart from one another on a line running through a mid point of the opening. 
     
     
         4 . The liquid container according to  claim 1 , wherein the groove forms a concentric circle. 
     
     
         5 . The liquid container according to  claim 1 , further comprising a mushroom valve disposed in the opening, wherein the mushroom valve comprises a valve shield with a stem connected to the valve shield and at least one sealing lip is formed on an underside of the valve shield between a sealing edge and the stem. 
     
     
         6 . The liquid container according to  claim 1 , wherin the liquid container is designed as a swirl pot for a fuel container of an automobile. 
     
     
         7 . The liquid container according to  claim 5 , further comprising M sealing lips in addition to the at least one sealing lip, and M is less than or equal to 3. 
     
     
         8 . The liquid container according to  claim 1 , wherein the at least one sealing lip and the M sealing lips are configured concentrically with respect to the stem. 
     
     
         9 . The liquid container according to  claim 1 , wherein an elasticity of the valve shield is selected in such a manner that the at least one sealing lip is elastically decoupled from at least one of
 an adjacent peripheral sealing edge of the valve shield or   from one of the M sealing sealing lip.   
     
     
         10 . The liquid container according to  claim 1 , wherein the valve shield is configured as a corrugated valve shield. 
     
     
         11 . The liquid container according to  claim 1 , wherein the sealing lip is a substantially web-shaped sealing lip. 
     
     
         12 . The liquid container according to  claim 1 , wherein the valve shield has a central recess.