| 摘要 |
A container (2) for a liquid medium has a wall comprising an expansion element (8), adapted to handle a volume expansion of the medium (4) upon temperature changes. The expansion element (8) has substantially an extent which coincides with the extent of the wall (6). The expansion element (8) is resilient and is adapted to exist in one of two states:
A first state, which is the normal state for the expansion element (8) and where the expansion element (8) has a convex shape (10) facing the inside of the container (2), and which is the state in which the element exists, as long as the medium (4) inside the container (8) has a pressure P which is below a predetermined threshold value P T , and a second state, where the expansion element (8) has a concave shape (12) facing the inside of the container (2),
when the medium inside the container has a pressure P exceeding the threshold value P T . The volume increase which the expansion plate causes prevents the container from being damaged due to e.g. freezing of a liquid medium. |
