Abstract: A motor-driven compressor comprises a drive shaft driven by an electric actuator and acting on a crank mechanism having a crank with which a connecting rod is associated eccentrically, the connecting rod supporting a piston movable in a corresponding cylinder. The cylinder has a longitudinal axis W inclined to the axis X of the drive shaft at an angle other than 90 n degrees so that the connecting rod supporting the piston has a longitudinal axis K which intersects the plane in which the crank lies.

Abstract: Suction muffler assembly for hermetic compressors of the type including a cylinder block (4) mounted in the upper part of a hermetic case (3) and provided with a cylinder (10) lodging a reciprocating piston (15); a valve plate (11) attached to an open end of the cylinder (10) and having a suction orifice (11a); a suction muffler assembly attached to the cylinder block (4) and including a hollow muffler body (100) provided with a gas inlet opening (101, 130a) and a gas outlet opening (121); and a suction duct (140) having one inlet end (141) connected to the gas outlet opening (121) and an opposite outlet end (142) in communication with the suction orifice (11a) of the valve plate (11), said hollow muffler body (100) being formed of a lower part (110), presenting an end peripheral edge (117), and a cover upper part (120) carrying the gas outlet opening (121) of the muffler body (100) and including a peripheral lower seating surface portion (127) to be seated onto the end peripheral edge (117) of the lower part

Abstract: A reed valve for a hermetic compressor, comprising a cylinder block (1) having a pair of opposite faces; a cylinder (C) formed in said cylinder block (1) and housing a piston (2); at least one end plate (3) having an outer face (3a) and an inner face (3b) fixed to one of the opposite faces of the cylinder block (1), in order to close a respective end of the cylinder (C), and being provided with at least one pair of axial gas passages (6, 7) communicating the interior of the cylinder (C) with the outer face (3a) of the end plate (3) through a respective read valve (10), which is fixed to the face (3a) of the end plate (3), to which is opened the outlet end (6b, 7b) of the respective gas passage (6, 7), said valve comprising a blade element (10) with a body being formed of a resin that is preferably plastic and reinforced with fiber filaments (20, 21, 22) spaced from each other according to at least one direction relative to the longitudinal axis of the blade element (10).

Abstract: Valve for a hermetic refrigeration compressor, having a cylinder block (10) with a cylinder (C) and a piston (20). A valve plate (30) attached to the cylinder block (10) has at least one axial gas passage (31, 32) communicating the inside of the cylinder (C) with the front face (30a) of the valve plate (30) through a respective reed valve at the outlet end (31b, 32b) of the respective gas passage (31, 32). The valve has a blade element (60, 80) and a biasing means (70, 90) disposed between the blade element (60, 80) and the valve plate (30) to displace said blade element to a partial opening position of the valve upon occurrence of pressure balance between the upstream and downstream regions of the valve, the biasing means (70, 90) itself being elastically deformed by the blade element (60, 80) when the valve closes, whenever the gas pressure downstream the valve exceeds the gas pressure upstream thereof.

Abstract: A discharge valve for a reciprocating hermetic compressor of the type comprising a cylinder housing a reciprocally driven piston. A valve plate is mounted on the cylinder and has a discharge orifice the outer face of the valve plate having a recess with a side wall surrounding said discharge orifice and defining a valve seat. A sealing member is axially movable between a closing position against the valve seat. A backstop member is externally attached to the valve plate so as to limit the axial displacement of the opening sealing member. Guide elements for axial displacement of the sealing member are provided around the latter and mounted between the valve plate and the backstop member. There is a resilient deformable means with an end attached to the backstop member and another end opposite to the first one, provided at a plane adjacent to the outer face of the sealing member, opposite to that face sealing against the valve seat.

Abstract: The invention relates to a hermetic refrigeration compressor of the type including a motor compressor unit (1) suspended within a hermetic case (3). The motor compressor unit (1) comprises a cylinder provided with cylinder head (12) defining suction and discharge chambers with their corresponding values, and a suction muffler set (100). According to the invention, the suction muffles set comprises a small muffler shell (110) mounted outside the cylinder head, and an insulating hollow body (120) lining the suction chamber (13) of the cylinder head (12). A strainer device (118) is fixed between the two half parts forming the hollow body (120). This configuration facilitates the assembling of the strainer (118) and guarantees its tight fixation without any kind of fixing frame or ring. This makes it possible to enlarge considerably the area of the strainer, thus avoiding heat transfer from the metal strainer to the suction gas flow when passing throughout the meshes.

Abstract: The invention relates to a hermetic refrigeration compressor of the type including a motor compressor unit (1) suspended within a hermetic case (3). The motor compressor unit (1) comprises a cylinder provided with cylinder head (12) defining suction and discharge chambers with their corresponding valves, and a suction muffler set (100). According to the invention, the suction muffler set comprises a small muffler shell (110) mounted outside the cylinder head, and an insulating hollow body (120) lining the suction chamber (13) of the cylinder head (12). The refrigerant gas is led from the suction pipe (18) of the compressor case (3) to the inside of the insulating hollow body (120) by means of a flow leading pipe (115) arranged within the small shell (110) and communicating with its inside through radial openings (117, 116).