Patent ID: 6695592
Filing Date: 2004-02-24
Classification: F04B,F25B

Abstract:
A compressor for compressing gas, the compressor having a suction region and a discharge region in a compressor housing, the gas being introduced into the suction region, the gas being compressed and discharged into the discharge region, the compressor comprising:a high-pressure relief valve placed on the compressor housing in use for the discharge region, wherein the high-pressure relief valve opens when the pressure of the gas in the discharge region is more than a first predetermined pressure, the high-pressure relief valve having a first element, a second element and a first shim, the first element and the second element being connected to each other so as to sandwich the first shim, the first predetermined pressure being determined in accordance with thickness of the first shim; and a low-pressure relief valve placed on the compressor housing in use for the suction region, wherein the low-pressure relief valve opens when the pressure of the gas in the suction region is more than a second predetermined pressure which is lower than the first predetermined pressure, the low-pressure relief valve having a third element, a fourth element and a second shim, the third element and the fourth element being connected to each other so as to sandwich the second shim, the second predetermined pressure being determined with thickness of the second shim, wherein the high-pressure relief valve and the low-pressure relief valve have similar structure to each other.