| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce noise of a compressor.SOLUTION: A compressor 1 includes an approximately cylindrical casing 2 with a closed bottom, and a recessed part 3 having a recessed shape in a view from the outside of the casing 2 is formed on a bottom part 2a of the casing 2. As the depth of the recessed part 3 becomes gradually deeper toward a center core C of the casing 2, sound waves emitted from the recessed part 3 move toward a direction approaching the central core C of the casing 2. Therefore, the sound waves emitted from the bottom part 2a can be prevented from getting out of a space between a bottom plate 100 and the bottom part 2a after repeatedly reflecting therebetween and can be attenuated by being repeatedly reflected between the bottom plate 100 and the bottom part 2a.</p> |
