Control system of servo-screw air compressor
Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- JUCAI IND SHENZHEN
- Publication Date
- 2015-06-24
Smart Images
Figure 1
Abstract
Description
technical field
[0001] The invention relates to a control system of a screw air compressor, in particular to a control system of a servo screw air compressor. Background technique
[0002] The so-called variable frequency screw machines on the market just add a frequency converter to the front of the ordinary screw machine, and the motor is an ordinary three-phase asynchronous motor. Although it can also adjust the speed, change the displacement, and supply air at constant pressure. However, the constant pressure range is relatively small, and it needs to be delayed to stop and start, and it needs to be unloaded. When it is unloaded, the motor is idling, and no compressed gas is generated, which consumes energy in vain.
[0003] a) These so-called variable frequency air compressors can have some speed regulation functions, but their speed adjustment range is small, and they cannot provide full displacement adjustment.
[0004] b) No-load is required during operation, and n...