Abstract: A hermetic compressor includes, inside hermetic container (1), electric motor element (2), compression element (3) driven by electric motor element (2), and lubricating oil (7) for lubricating compression element (3). The hermetic compressor further includes vibration damping member (16) having one part fixed to hermetic container (1) and another part being free end part (18). Structurally, a natural frequency of vibration damping member (16) is in substantial conformity with a natural frequency of hermetic container (1).

Abstract: A sealed compressor of the present invention comprises an electric component (111); a compression component (113) actuated by the electric component (111); and a sealed container (101) which accommodates therein the electric component (111) and the compression component (113), and stores lubricating oil therein; wherein the compression component (113) includes a crankshaft (135) including a main shaft (137) and an eccentric shaft (139); a cylinder block (117) including a bearing unit (123) supporting the main shaft (137) such that the main shaft is rotatable, and a cylinder (121) defining a compression chamber (119); and a suction muffler (131) through which a refrigerant gas (115) flows from an interior of the sealed container (101) to an interior of the compression chamber (119); a separating wall (165) is provided between the suction muffler (131) and the electric component (111); a first space (159) is formed between the suction muffler (131) and the separating wall (165); and a second space (163) is form

Abstract: A hermetic compressor includes, inside hermetic container (1), electric motor element (2), compression element (3) driven by electric motor element (2), and lubricating oil (7) for lubricating compression element (3). The hermetic compressor further includes vibration damping member (16) having one part fixed to hermetic container (1) and another part being free end part (18). Structurally, a natural frequency of vibration damping member (16) is in substantial conformity with a natural frequency of hermetic container (1).

Abstract: A sealed compressor of the present invention comprises an electric component (103); a compression component (105); a sealed container (101); and a suction pipe (115); wherein the compression component (105) includes a compression chamber (141), and a suction muffler (115) through which a refrigerant gas flows; wherein the suction muffler (157) includes a muffler body (165) in which a muffling space (163) is formed, a tail pipe (159) through which a refrigerant gas is introduced into the muffling space (163); and a muffler cover (169) provided to surround the muffler body (165) such that a first space (167) is formed between the muffler cover (169) and the muffler body (165); wherein the muffler cover (169) is provided with a refrigerant inlet (175) in a portion which faces an outlet (117) of the suction pipe (115) and is in the vicinity of a suction port (171) of a tail pipe (159), the refrigerant inlet communicating the interior of the sealed container (101) with the first space (167).

Abstract: In a sealed compressor (100) of the present invention, a suction muffler (160) includes a communication pipe (162) coupled to a suction hole (151a) of a valve plate (151). The communication pipe (162) extends upward from the suction muffler (160) toward the other end of a cylinder (133), and is provided at an upper end thereof with a communication pipe exit section (162a) which is in communication with the suction hole (151a). The cylinder head (152) is formed on a lower portion with a recess (152d) accommodating the communication pipe exit section (162a) therein. A gas inflow space (152b) in the interior of the sealed container is formed between the communication pipe exit section (162) and a recess (152d). The gas inflow space (152b) in the interior of the sealed container is a space which is in communication with a sealed space inside of the sealed container (101).

Abstract: A sealed compressor of the present invention comprises an electric component (111); a compression component (113) actuated by the electric component (111); and a sealed container (101) which accommodates therein the electric component (111) and the compression component (113), and stores lubricating oil therein; wherein the compression component (113) includes a crankshaft (135) including a main shaft (137) and an eccentric shaft (139); a cylinder block (117) including a bearing unit (123) supporting the main shaft (137) such that the main shaft is rotatable, and a cylinder (121) defining a compression chamber (119); and a suction muffler (131) through which a refrigerant gas (115) flows from an interior of the sealed container (101) to an interior of the compression chamber (119); a separating wall (165) is provided between the suction muffler (131) and the electric component (111); a first space (159) is formed between the suction muffler (131) and the separating wall (165); and a second space (163) is form

Abstract: A hermetic compressor according to the present invention includes: an electric element (103); a compression element (105) driven by the electric element (103); and a sealed container (101) accommodating the electric element (103) and the compression element (105), the sealed container (101) storing an oil (113). The compression element (105) includes: a crank shaft (119) including a main shaft (129), an eccentric shaft (127), and an oil supply mechanism (131); a cylinder block (121) including a main bearing (137) and a cylinder (135), the main bearing (137) pivotally supporting the main shaft (129) of the crank shaft (119), the cylinder (135) forming a compression chamber (133); a piston (123) configured to move inside the cylinder (135) in a reciprocating manner; and a connector (125) connecting the eccentric shaft (127) and the piston (123).

Abstract: A sealed compressor of the present invention comprises an electric component (103); a compression component (105); a sealed container (101); and a suction pipe (115); wherein the compression component (105) includes a compression chamber (141), and a suction muffler (115) through which a refrigerant gas flows; wherein the suction muffler (157) includes a muffler body (165) in which a muffling space (163) is formed, a tail pipe (159) through which a refrigerant gas is introduced into the muffling space (163); and a muffler cover (169) provided to surround the muffler body (165) such that a first space (167) is formed between the muffler cover (169) and the muffler body (165); wherein the muffler cover (169) is provided with a refrigerant inlet (175) in a portion which faces an outlet (117) of the suction pipe (115) and is in the vicinity of a suction port (171) of a tail pipe (159), the refrigerant inlet communicating the interior of the sealed container (101) with the first space (167).

Abstract: A sealed compressor of the present invention comprises an electric component (105); a compression component (107); and a sealed container (101) accommodating the electric component (105) and the compression component (107); wherein the compression component (107) includes: a cylinder block (115) defining a compression chamber (135); a piston (125); and a valve plate (133) having a suction hole (137) through which a refrigerant gas to be compressed in the interior of the compression chamber (135) flows, and a discharge hole (139) through which the refrigerant gas compressed in the interior of the compression chamber 8135) is discharged; wherein the piston (125) is provided with a projection (155) on a tip end surface (153) which faces the valve plate (133); and wherein the projection (155) is configured such that side surfaces thereof include at least one flat surface and a gradient ? of the flat surface with respect to the tip end surface of the piston (125) is smaller than a gradient ? of another side surfac

Abstract: There is disclosed a sealed compressor in which a compressive component housed inside of a sealed container comprises a block, a suction valve, a piston, and a suction muffler, the suction muffler including a muffler body defining a muffler space and an outlet tube communicating the muffler space with the suction valve, the outlet tube having a bent portion bent in a middle portion between an opening exposed to the muffler space and an opening in a vicinity of the suction valve, a first outlet tube portion extending from the bent portion toward the muffler space, and a second outlet tube portion extending from the bent portion toward the suction valve, wherein a close sided space is formed in a vicinity of the bent portion, the close sided space having one end in communication with the outlet tube and the other end closed.

Abstract: A valve plate includes a suction port to which gas to be compressed in a compression chamber flows in and a discharge port from which gas compressed in the compression chamber is discharged, a projection that appears from the discharge port with the reciprocating movement of the piston is arranged at a position facing the discharge port at a distal end face of the piston, and the projection includes a flat surface extending parallel to a reciprocating direction of the piston, so that a highly efficient hermetic type compressor that reduces the dead volume of the discharge port and reduces the loss in the compression chamber and the discharge port is provided.

Abstract: A compression element is provided with a block, a piston, a valve plate arranged in an opening end of a compression chamber and forming a suction hole, a suction valve, a suction muffler forming a sound absorbing space and provided with a communication pipe, and a cylinder head, the communication pipe has a suction muffler outlet portion communicated with the suction hole, is arranged in such a manner as to extend in a vertical direction with respect to a center line passing through the suction hole, and is arranged in such a manner that a part of the suction muffler outlet portion covers a part of the suction hole in the suction muffler outlet portion positioned in a downstream side of refrigerant gas flowing through the communication pipe, in the case of projection the suction muffler outlet portion in a direction of a center line.

Abstract: A Inlet pipe (151) communicating the space inside the hermetic enclosure with sound absorbing space (147) of inlet muffler (145) is provided so as to be inclined downward from inlet-pipe inlet (155) toward inlet-pipe outlet (157). Outlet pipe (153) communicating sound absorbing space (147) with an inlet valve includes outlet-pipe inlet (161) and outlet-pipe outlet (163). Inlet-pipe inlet (155) and outlet-pipe inlet (161) are formed at substantially same height. Herewith, introducing a refrigerant gas to outlet-pipe inlet (161) making efficient use of potential energy of the refrigerant improves the compression efficiency and stabilizes the performance of the compressor.

Abstract: According to the present invention, a recess (25) which is induction means is provided in a top end surface (24) of a piston (16), the recess (25) guides working fluid (3) staying near an inner peripheral surface of a compression chamber (13) from an outer peripheral edge of the top end surface (24) toward an opposite position of the top end surface (24) facing a discharge hole (19), and the recess (25) smoothens discharging motion of working fluid (3) from the discharge hole (19).

Abstract: There is disclosed a sealed compressor in which a compressive component housed inside of a sealed container comprises a block, a suction valve, a piston, and a suction muffler, the suction muffler including a muffler body defining a muffler space and an outlet tube communicating the muffler space with the suction valve, the outlet tube having a bent portion bent in a middle portion between an opening exposed to the muffler space and an opening in a vicinity of the suction valve, a first outlet tube portion extending from the bent portion toward the muffler space, and a second outlet tube portion extending from the bent portion toward the suction valve, wherein a close sided space is formed in a vicinity of the bent portion, the close sided space having one end in communication with the outlet tube and the other end closed.

Abstract: A valve plate includes a suction port to which gas to be compressed in a compression chamber flows in and a discharge port from which gas compressed in the compression chamber is discharged, a projection that appears from the discharge port with the reciprocating movement of the piston is arranged at a position facing the discharge port at a distal end face of the piston, and the projection includes a flat surface extending parallel to a reciprocating direction of the piston, so that a highly efficient hermetic type compressor that reduces the dead volume of the discharge port and reduces the loss in the compression chamber and the discharge port is provided.

Abstract: A compression element is provided with a block, a piston, a valve plate arranged in an opening end of a compression chamber and forming a suction hole, a suction valve, a suction muffler forming a sound absorbing space and provided with a communication pipe, and a cylinder head, the communication pipe has a suction muffler outlet portion communicated with the suction hole, is arranged in such a manner as to extend in a vertical direction with respect to a center line passing through the suction hole, and is arranged in such a manner that a part of the suction muffler outlet portion covers a part of the suction hole in the suction muffler outlet portion positioned in a downstream side of refrigerant gas flowing through the communication pipe, in the case of projection the suction muffler outlet portion in a direction of a center line.

Abstract: A Inlet pipe (151) communicating the space inside the hermetic enclosure with sound absorbing space (147) of inlet muffler (145) is provided so as to be inclined downward from inlet-pipe inlet (155) toward inlet-pipe outlet (157). Outlet pipe (153) communicating sound absorbing space (147) with an inlet valve includes outlet-pipe inlet (161) and outlet-pipe outlet (163). Inlet-pipe inlet (155) and outlet-pipe inlet (161) are formed at substantially same height. Herewith, introducing a refrigerant gas to outlet-pipe inlet (161) making efficient use of potential energy of the refrigerant improves the compression efficiency and stabilizes the performance of the compressor.