| 摘要 |
<p>PURPOSE:To enable damping of pulsation of a suction pressure, by a method wherein a projected part, forming the surrounding of a coupling bolt in the outer peripheral wall of a low pressure chamber, and a recessed part, forming the surrounding of a suction part, are interconnected through a connection which has a surface being so curved as to prevent resistance from being exerted on the flow of intake. CONSTITUTION:Intake gas, incoming through a suction port, (not shown), is sucked to a compression chamber through a suction port 9 after passage of the gas through a low pressure chamber 16. In this case, in a low pressure chamber 16, a partition wall 15 is round, and thereby the flow of intake gas flowing along the partition wall 15 is smooth. Meanwhile a projected part 24a, forming the surrounding of a coupling bolt 7 in an outer peripheral wall 24, and a recessed part 24b, forming the surrounding of a suction port 9, are interconnected through a connection 24c which has a curved surface so smooth as to prevent resistance from being exerted on the flow of intake gas. This enables smoothening of the flow of the intake gas flowing through the low pressure chamber 16, resulting in the possibility to sharply reduce the occurrence of pulsation of a suction pressure.</p> |
