DREAM DMV screw air compressor can, under the principle of stable discharge pressure, change the rotation speed of the main motor precisely according to the variety of using air capacity, to make the air compressor just discharge the needed air capacity, meanwhile, it also just consumes the energy needed for discharging the compressed air. Therefore, it has achieved the goal of energy-saving, which means the saved energy expense during the operating period of the whole machine far surpass the price of air compressor itself.
图中显示的是几种启动方式的比较，可以看出变频机是缓慢地加速启动，比软启动更加平稳，完全避免了电流峰值，在启动运行至额定压力后变频运行。能最大程度上适应电力不足的使用环境。
From several start-up modes shown in the chart, we can see that the variable frequency compressor start-up style is of slow to add speed, which more stable than soft start and absolutelyavoid the current peak. After running to the rated pressure, it will operate with variable frequency,which can adapt to the power lacking environment.
恒压供气 产用平衡
Constant pressure for air supply with balance
图中显示的是普通空压机与变频空压机运行中的状况比较。变频机会根据用气量的变化自由地调节机器的转速，达到产气量与用气量的平衡，这样避免了机器在用气量的变化下频繁加卸载，使得变频机与传统压缩机相比会节省大约35％的能源或更多。平稳的压力输出，可以将压力带控制在0.01MPa-0.02MPa，避免了传统压缩机高达0.05-0.2MPa压力带所带来的高负荷电流损耗。
In the chart, it shows the operating condition between normal air compressor and variable frequency air compressor. According to the various of air requires to adjust the speed of motor to make sure the air output and air requires are balanced, so avoid machine to frequently load and unload during various of air requires, which compared with the traditional compressor , the variable frequency air compressor could save about 35% of energy or more. Stable pressure output can control the pressure between 0.01MPa-0.02MPa, which avoids the high load current lost because of the traditional
compressors’ 0.05-0.2MPa pressure.
多机联合控制功能（可选配）
Multi-compressor combines to control function (optional)
据研究表明，变频压缩机与普通压缩机相比，节能效果主要体现在两个方面：普通压缩机的空载损耗和压力波动损耗。以一台55KW机组，年平均产气量70％为例，每年可节约电能80000Kwh左右，大约两年即可收回一台变频机的投资成本。
According to research shows that compared with normal compressor, energy-saving effects of variable frequency reflect mainly in two aspects: no-load loss and pressure fluctuation loss of normal compressor. Take a 55KW compressor with average annual air production 70% as example. It can save about 80000Kwh electric energya year and about two years will recover the production cost of a variable frequency compressor.