Patent ID: 7695257

Claim:
An apparatus for preventing vacuum of a scroll compressor, the apparatus comprising: a casing having a hermetic inner space divided into a suction chamber of a low pressure and a discharge chamber of a high pressure; a fixed scroll fixedly installed between the suction chamber and the discharge chamber, that forms a compression chamber that consecutively moves by being engaged with an orbiting scroll, wherein the fixed scroll includes an outlet through which a refrigerant compressed in the compression chamber is discharged to the discharge chamber, a middle pressure channel through which the refrigerant compressed in a middle pressure chamber is discharged to the discharge chamber, and a bypass hole through which the suction chamber is connected to the discharge chamber; a valve block having an inner channel through which the bypass hole of the fixed scroll is connected to the discharge chamber of the casing, wherein the valve block is fixedly installed at the fixed scroll; and a valve member disposed between the bypass hole of the fixed scroll and the inner channel of the valve block, wherein the valve member is configured to provide fluid communication between the bypass hole and the inner channel when a pressure of the compression chamber is lowered to a pressure less than a predetermined pressure and to prevent the fluid communication between the bypass hole and the inner channel when the compression chamber maintains the predetermined pressure, wherein the valve block comprises: a block body having a valve hole configured to slidably receive the valve member, a discharge pressure channel that connects the valve hole to the discharge chamber, and a first connection channel penetratingly formed from the valve hole to the bypass hole of the fixed scroll; and a block cover having a second connection channel trough which the valve hole of the block body is connected to the first connection channel, and fixed to the block body.