Patent ID: 11959473
Assignee: EATON-MAX, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 4:
5. A method of operating a reciprocating piston air compressor having a tank for storing compressed air, a reciprocating piston pump for compressing air and delivering it to the tank, an electric motor for driving the pump, an outlet for delivering compressed air from the tank for use external to the tank, a variable speed drive, a plurality of cylinder heads having channels therein, and a programmable logic controller for controlling operation of the air compressor, the method including the steps of:
utilizing the programmable logic controller to input an operating pressure range having a minimum operating pressure and a maximum operating pressure;
utilizing the programmable logic controller to input a buffer pressure that is less than the maximum operating pressure;
monitoring the pressure in the tank;
utilizing the variable speed drive to decrease the speed of the electric motor when the pressure in the tank reaches the buffer pressure; and
circulating fluid through the channels.