Soft-start hermetic compressor

摘要

The present invention relates to a hermetic compressor (1) used in operating cooling devices like the refrigerator, comprising a casing (2) carrying the elements therein, an oil sump (3) forming the lower portion of the casing (2) and wherein oil (Y) is put providing the lubrication of the movable elements, an electric motor having a rotor (4) and a stator, a piston (5) providing the delivery of the refrigerant fluid in pressurized state to the refrigeration system, a cylinder block (6) wherein the piston (5) operates, a crankshaft (7) delivering the rotational movement of the rotor (4) to the piston (5) by changing it to linear movement and an oil pickup tube (9) mounted to the core of the rotor (4), the lower end of which is immersed into the oil (Y) in the oil sump (3) and the upper end extending upwards from the middle of the rotor (4) and which delivers the oil (Y) to the crankshaft (7) by sucking from the oil sump (3) and a hydrodynamic coupling (10) that transfers the rotational movement of the rotor (4) to the crankshaft (7).

主权项

1. A hermetic compressor (1) comprising a casing (2) carrying movable elements
therein, an oil sump (3) forming the lower portion of the casing (2) and wherein oil (Y) is put providing the lubrication of the movable elements, an electric motor having a rotor (4) and a stator, a piston (5) providing the delivery of a refrigerant fluid in pressurized state to a refrigeration system, a cylinder block (6) disposed at the upper side of the rotor (4), a crankshaft (7) supported by the cylinder block (6), and an oil pickup tube (9) mounted to the rotor (4) by press-fit assembling method, the lower end of which is immersed into the oil (Y) in the oil sump (3) and which delivers the oil (Y) to the crankshaft (7) by sucking from the oil sump (3), and characterized by a hydrodynamic coupling (10) that transfers the rotational movement of the rotor (4) from the oil pickup tube (9) to the crankshaft (7) by being connected between the upper end of the oil pickup tube (9) and the lower end of the crankshaft (7), wherein the hydrodynamic coupling is fed by the oil sucked from the oil sump by the oil pickup tube.