Our variable frequency screw air compressor in DMV series is totally assembled and programmed before leaving the plant. Without complex installation, users can put the product into use only through connecting it to the power supply. The intelligent controller with multiple functions inspects the changeable pressure constantly and changes the rotating speed accurately to ensure the consistency of displacement and air demand in the user's system. The response speed of the intelligent controller is calculated in millisecond and the modification on speed is finished within 3ms to control the air pressure at the outlet within the minimum scope precisely.
Under the stable displacement pressure, the variable frequency screw air compressor will change the rotating speed of the main motor precisely according to changing air consumption. Then the product outputs the needed compressed air only and consumes a corresponding quantity of energy. In the running cycle, the cost on energy the product saves is far more than the price of the product.
Start and operation
The picture above shows the comparison of several starting methods. The variable frequency product starts stably with gradual acceleration and it avoids the current peak completely. Reaching the nominal voltage while starting, the product will convert the frequency for operation. It is adaptive in the situations of lacking of electricity.
Air supply at constant pressure and production equaling to consumption
The above picture tells the contrast of running status of common product and variable frequency screw air compressor. Our product adjusts the rotating speed freely with the variable air consumption to keep the balance between air displacement and consumption. In this way, the product prevents the frequent loading and unloading with the changeable air consumption. Therefore, this product saves more energy than the common product by 35% or more. As the pressure outputs stably, the product controls the pressure scope within 0.01Mpa to 0.02Mpa. It avoids the current loss caused by large load of the conventional product under the pressure ranging from 0.05 to 0.2Mpa.
Multi-machine combining control function (optional)
Compared with common compressor, this product exerts better energy saving effect reflected in no-load loss and the loss of pressure fluctuation. As for one 55kw product with 70% annual average air production, it saves about 80000kwh of electricity every year. The profit on saved energy for 2 years equals the invested cost of the product.
Our company is an experienced variable frequency screw air compressor manufacturer and supplier in China. We provide various types of products such as direct driven rotary screw compressor, diesel air compressor, oil free air compressor, and high pressure air compressor.
VFD Drive Screw Compressor for Sale | Accurate Compressed Air Supply | Energy Efficient Manufacturing