| 摘要 |
PURPOSE:To reduce the extent of pressure pulsation by branching off a refrigerant conducted to a discharge muffler from an interconnecting pipe, to a refrigerant passage to be formed by an inner groove and a muffler ring formed in an inner wall of this discharge muffler, and then rejoining these branched refrigerants together and discharging it to the discharge muffler. CONSTITUTION:A refrigerant drawn in is compressed by a piston 25 reciprocating in the inner part of a cylinder 24. At this time, since compression and suction are repeated in this cylinder 24, this discharge refrigerant has the pressure pulsation conformed to rotational frequency of a motor element driving a compressive element. The refrigerant with this pressure pulsation is conducted to a refrigerant from a discharge chamber 31 by way of an interconnecting pipe 32. Incidentally, this refrigerant coming out of a discharge port 38 of the pipe 32 is branched off at the refrigerant passage 37 consisting of the inner groove 35 or the like formed in an inner wall 34 of a discharge muffler 33. In brief, the refrigerant's pressure pulsation is decreased by flow passage resistance out of the refrigerant passage 37, while same pulsations are joined together at a discharge port 39 of a muffler ring 34, thereby countervailing each other, and then the eased pulsation is released to an interspace of the discharge muffler 33.
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