VARIABLE DELIVERY COMPRESSOR

摘要

PURPOSE:To make it possible to reduce noise levels of a variable delivery type vane compressor by forming a silencer chamber in a pressure chamber of a regulation valve for supplying drive pressures to a bypass valve of the variable delivery type vane compressor. CONSTITUTION:Pressures in a suction chamber 160 of a compressor are led via a suction pressure passage 129 to a pressure chamber 117 of a regulation valve 109. When pressures in the pressure chamber change, a diaphragm 120 is displaced due to a pressure differential relative to the pressure in a low pressure chamber 150 and also a valve body 115 is driven to change pressures in a signal pressure chamber 220. And a bypass valve 131 is driven to regulate the delivery of the compressor. Since a silencer chamber 240 is formed near the diaphragm 120 of the pressure chamber 117 so that pressure variance in the pressure chamber 117 is not led directly to the diaphragm 120, there is no possibility of abnormal noises being produced due to variance in the condition of the diaphragm 120.