| 摘要 |
<p>The insert (2) has a cylindrical wall (8) and two through holes (9) that are provided within the wall. The holes are connected with an inlet pipe (6) and/or downpipe (7). A circular opening (5a) within the wall ensures a pressure balance between an inner area of a warm water bed storage (1) and an inner area of the insert when filling or draining the storage by the inlet pipe and downpipe. One of the holes is connected with the inlet pipe and downpipe, where the ratio of the sum of a flow cross section of the opening to a flow cross section of one of the holes has a value between 1 and 1.5.</p> |
