SCROLL COMPRESSOR

PROBLEM TO BE SOLVED: To prevent the damage of a scroll compressor by providing the end plate of a fixed scroll with a hole to make a high and a low pressure side communicate mutually and moreover a high pressure relief valve in the above hole. SOLUTION: A high pressure relief valve 60 is composed of a ball 62 to abut on a seating face 61 formed in a hole 66, a spring 63 to press energize the ball 62 toward the seating face 61 under fixed setting force, and a spring support 64 to support the one end of the spring 63. During the operation of a scroll compressor, a difference between pressure on a high pressure side 46 and that on a low pressure side 47 attains a fixed value, the ball 62 of the high pressure relief valve 60 separates from the seating face 61 against the bursting force of the spring 63, and the gas on the high pressure side 46 passes through the hole 66 and the high pressure relief valve 60 and flows to the low pressure side 47. The pressure on the high pressure side does not therefore rise above a prescribed pressure for preventing the damage of a scroll compressor.