Lg Electronics Inc.

Cheol Ki No

Hyeon Jun Kim

Kyoung Jun Park

Jong Bong Kim

Dal Soo Kang

Min Young Seo

Kee Joo Kim

Hee Hyun Kim

Young Joo Bae

Jai Seong Sim

A crankshaft in a dual capacity compressor is disclosed, which causes oil contained in a lower portion of the compressor to flow up to an upper portion thereof with respect to all the rotational directions of a motor. A crank shaft () includes a driving shaft () inserted into a reversible motor () for rotating along with the motor (), a balance weight () formed in a top portion of the driving shaft () for preventing vibration during rotation from occurring, a crank pin () formed on an upper surface of the balance weight () to be eccentric from the center of the driving shaft (), and a regular/reverse oil path () formed along the balance weight () and the crank pin () for moving oil for forward rotation and reverse rotation of the motor respectively. The crankshaft serves to stably lubricate each driving part of the dual capacity compressor regardless of rotation direction.

Crank shaft in dual capacity compressor

Reversible motor including a stator having two windings (a&#x2013;a', b&#x2013;b&#x2032;), a start apparatus (c&#x2013;c&#x2032;) connected to one of the two windings (a&#x2013;a&#x2032;, b&#x2013;b&#x2032;) in series, switches () for providing power to the two windings selectively, wherein the switches, for reversing the motor, are connected selectively such that the direction of the current in the one of the two windings is reversed and the start apparatus is connected to the other one of the two windings in series, and a turns ratio and a cross section area ratio of the two windings being adjusted for a sufficient start torque and an optimal efficiency of the reversible motor.

Reversible motor

Growing community of inventors

Changwon-shi, South Korea

Cheol Ki No