Auxiliary control device for compressor and auxiliary control method for compressor thereof

Abstract

The present invention relates to an auxiliary control device for a compressor comprising: an inverter pack control unit (23) for stopping the operation of a compressor, selecting an operational condition such as a manual mode and an automatic mode or the like, and inputting a target input value; an operation control unit (12) for automatically detecting a load operation state or a no-load operation state of the compressor on the basis of a signal for an inputted current state when the compressor (8) is operated, preventing a high-speed idling operation when in the no-load operation state, performing a standby function for stopping a motor when the no-load operation continues for a predetermined time and a rapid re-operation prevention function, and separating a power source for driving the motor of the compressor and an operational power source from each other; and a pressure control unit (22) for comparing the target pressure value predetermined by a user with the pressure value which is detected from a receiver tank and outputted through a pressure sensor, and outputting the current according to a deviation value to the inverter, wherein the inverter (5) is configured to control the motor of the compressor in connection with a change in the current value outputted from the pressure control unit (22) according to the deviation of an internal pressure value of a receiver tank (20) for a target pressure value of the predetermined receiver tank (20).

Description

technical field [0001] The present invention relates to a compressor auxiliary control device controlled by an inverter and an auxiliary control method thereof, and more particularly, to a compressor auxiliary control device that operates only with load and without load based on the conventional Y-Δ starting method. In the compressor operating in the normal mode, the rotation speed of the compressor motor can be controlled according to the change in the tank pressure based on the air demand, and the predetermined pressure can be maintained, and the auxiliary control can be performed to suppress high-speed idling when there is no load. [0002] The present invention also relates to a method of auxiliary control of a compressor using the improved compressor auxiliary control device as described above. Background technique [0003] Usually, compressors are widely used to produce compressed air. Compressed air is one of the energy sources that cannot be interrupted for a moment,...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide the following compressor auxiliary control device to solve the problems existing in the way of forcedly controlling the existing compressor through the control box, that is, it is different from the compressor based on the existing Y-Δ starting method. The current change of the pressure control part responding to the pressure sensor during load operation and no-load operation is linked, and the operation control part controls the compressor motor speed through the inverter to effectively perform the high-speed idling suppression function and use during no-load operation. Operand control function for motor stop and standby in idle state due to reduction in air demand

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