Patent ID: 6146101
Filing Date: 2000-11-14
Classification: F04B

Abstract:
An automatic control device for controlling an air compressor, said air compressor being provided with both an idle-running/heavy-running and an auto-stop/start operation mode wherein a motor of said air compressor is switchable between idle running and heavy running in said idle running/heavy running operation mode and is switchable between stopping when said air compressor does not pump air into an air tank thereof and starting in said auto-stop/start operation mode, said automatic control device comprising:a controller for controlling said air compressor to switch between said idle running/heavy running operation mode and said auto-stop/start operation mode mode and including a micro-processor for providing timing and driving functions;a microswitch which is a normally closed contact switch controlled by said controls and coupled to an air pressure cylinder of said air compressor; andan electromagnetic switch controlled by said controller and connected between said motor and a power sourcewherein a speed control is further provided between a back pressure valve and an inlet valve of said air compressor for extending the time period for said compressor to switch from idle running to heavy running.