| 摘要 |
An accumulator (11) according to the present invention is able to remove resonance caused by pressure fluctuations in an internal space (12a) of a casing (12), and to reduce noise. The accumulator (11) is provided with the casing (12) and resonance suppression members (18, 19). The resonance suppression members (18, 19) are installed in the internal space (12a) of the casing (12). The casing (12) has a cylindrical section (22) having a cylindrical shaft (22a) running along the vertical direction, an upper covering section (21) connected to an upper end of the cylindrical section (22), and a lower covering section (23) connected to a lower end of the cylindrical section (22). The resonance suppression members (18, 19) are installed at a height position in the vicinity of the height position(s) of a first anti-node and/or second anti-node, in a case where a pressure standing-wave having the first anti-node, a first node, and the second anti-node going from the upper covering section (21) toward the lower covering section (23) is generated in the internal space (12a). |
