Patent ID: 7094038

Claim:
A vacuum preventing device for a scroll compressor comprising: a housing engaged with one side of an outer circumferential portion of a fixed scroll to define a discharge region and a suction region; a chamber formed in the housing and having a compression hole connected to a compression region at one side therein, a suction hole connected to a suction region at the other side therein, and a discharge hole connected to a discharge region at a middle side therein; an open/close member movably installed in the chamber to selectively connect the discharge hole to the suction hole; and an elastic member installed in the chamber to provide an elasticity force to the open/close member, wherein in an abnormal driving condition, the open/close member is positioned to connect the discharge hole to the suction hole by the elasticity force of the elastic member being stronger than a pressure applied through the compression hole, and in a normal driving condition, the open/close member is positioned to obstruct the suction hole by a balance between the elasticity force of the elastic member and the pressure applied through the compression hole.