Container having co2 compressed gas source and overpressure burst safeguard

Abstract

The invention relates to a container that can be filled with fluid and closed pressure-tight and from which fluid can be removed, having an insert that can be fixed in an opening of the container while sealing the same. The insert has a high-pressure CO 2 cartridge ( 14 ), a pressure regulating valve for dispensing CO 2 therefrom, and an actuator accessible from outside, the actuation of which taps the high-pressure CO 2 cartridge ( 14 ). An overpressure safeguard provides, upon undesired increases in pressure in the container, a flow path from the head space thereof through the insert to the atmosphere. The overpressure safeguard is designed as a burst safeguard. It bursts after an internal pressure is exceeded at which the container visibly crowns, but before reaching an internal pressure at which the container explodes.

1 . A container that can be filled with liquid and closed in pressure-tight condition, and from which liquid can be withdrawn, comprising:
 an insert that can be fixed in sealed manner in an opening of the container and a high-pressure CO 2  cartridge, a pressure-regulating valve for discharging CO 2  therefrom and a control element that is accessible from the outside and that can be actuated to pierce the high-pressure CO 2  cartridge, and which has an overpressure safeguard, which in the event of an undesired pressure rise in the container opens a flow path from the top space thereof through the insert to the atmosphere, wherein   the overpressure safeguard bursts after exceedance of an internal pressure at which the container visibly bulges, but before development of an internal pressure at which the container splits, and in that the bursting part of the overpressure safeguard is a diaphragm on the wall of a housing with which the insert protrudes into the container.   
   
   
       2 . A container according to  claim 1 , wherein:
 the flow path leads through an unsealed zone of the control element.   
   
   
       3 . A container according to  claim 1 , wherein:
 the overpressure safeguard is inactive before the high-pressure CO 2  cartridge is pierced, and in that it can be activated by the piercing of the high-pressure CO 2  cartridge.   
   
   
       4 . A container according to  claim 1 , wherein:
 the overpressure safeguard bursts at an internal pressure of 4.0 to 9.0 bar.   
   
   
       5 . A container according to  claim 1 , wherein:
 the diaphragm is braced against the control element before the high-pressure CO 2  cartridge is pierced and is released from the control element as soon as the high-pressure CO 2  cartridge is pierced.   
   
   
       6 . A container according to  claim 1 , wherein:
 the diaphragm is countersunk into the insert.   
   
   
       7 . A container according to  claim 1 , wherein:
 the diaphragm is composed of elastic plastic.   
   
   
       8 . A container according to  claim 1 , wherein:
 the overpressure safeguard bursts at an internal pressure of 4.5 to 7.0 bar.   
   
   
       9 . A container according to  claim 1 , wherein:
 the overpressure safeguard bursts at an internal pressure of 5.0 to 6.0 bar.