Patent ID: 8430648
Filing Date: 2013-04-30
Classification: F01C,F04C

Abstract:
1. A rotary compressor comprising: a cylinder having an opening end; an end plate member attached to the opening end of the cylinder on a first side of the end plate member; a muffler cover attached to a second side of the end plate member opposite to the first side of the end plate member to which the cylinder is attached; and a roller and a blade arranged to partition a cylinder chamber into a refrigerant-gas inlet chamber and a refrigerant-gas discharge chamber, the cylinder chamber being defined by the cylinder and the end plate member, the blade being supported by the cylinder, and the roller being arranged to revolve around a center axis of the cylinder chamber, the muffler cover and the end plate member being arranged to form a muffler chamber which communicates with the refrigerant-gas discharge chamber of the cylinder chamber through an opening formed in the end plate member and which is located in a region of an entire circumference around the center axis of the cylinder chamber, the muffler chamber having only two barriers which extend in a radial direction from a central hub of the muffler chamber, and being circumferentially partitioned into a first space and a second space separate from the first space with respect to circumferential direction by the two barriers, the opening being formed in a region of the end plate member corresponding to the first space, a hole portion being formed in a region of the muffler cover corresponding to the first space, the hole portion being configured to discharge refrigerant-gas from the muffler chamber, such that the first space allows the refrigerant-gas to flow from the opening to the hole portion, while the second space forms a stagnation chamber which has a higher resistance to flowthrough of refrigerant gas than the first space, and the stagnation chamber overlapping a refrigerant-gas inlet side of the cylinder chamber as viewed along the center axis of the cylinder chamber, the refrigerant-gas inlet side being formed on one side of a center plane passing through the blade and passing through the center axis of the cylinder chamber.