答：鼓风机行业中关于罗茨风机和螺杆风机的区别有很多，例如以下三种说法！

　　行业中的螺杆风机与罗茨风机区别说法一：

　　螺杆鼓风机与罗茨鼓风机相比，同样风量的产品，在初次采购成本螺杆风机要高于罗茨鼓风机;但在能耗及维护成本上，螺杆鼓风机低于罗茨鼓风机。且这种优势会随着设备压力，以及使用的时间的增加，变得更加显著。可以从以下几个维度看出

　　1，维修频率，罗茨鼓风机频繁 螺杆鼓风机低

　　2，部署数量：罗茨鼓风机根据情况，一备一用或二用备一等;螺杆鼓风机根据使用情况，n+1.

　　3，能耗成本：罗茨鼓风机高;螺杆鼓风机：从0.5bar压力开始，内压缩节能效果，随压力的升高而升高

　　4，运行时间：罗茨鼓风机脉冲大，温度高，保守使用一般8小时左右切换备机;螺杆鼓风机结构配备散热夹套，运行温度低，可24小时运行。

　　5，购置成本：罗茨鼓风机单价低，数量多;螺杆鼓风机：单价较高，购置数量少。

　　螺杆风机与罗茨风机区别说法二：

　　罗茨风机和螺杆鼓风机都是属于容积式风机，如果两者要进行pk的话，可以简单归结为压缩原理的不同，螺杆鼓风机的节能、稳定、低噪优势更为突出。

　　罗茨风机在运转和输送空气的过程中，转子间的腔体不发生容积变化，压力来自于把大量的空气强制送入一个体积比较小的外部腔体中，如：管道或储气罐中，外部腔体中空气的密度不断提高，从而产生压力，通常称之为“外压缩”。罗茨鼓风机结构简单，强制送风(送风量不受排气压力影响)，自身不产生压力。

　　而螺杆鼓风机的工作原理就跟罗茨鼓风机有些区别了，空气同样是吸进来，再排出去，吸气时，螺杆和螺杆之间的空腔是大的，随着螺杆转子的转动，腔体体积会逐渐变小，当气体排出去后，腔体容积会变得很小很小。也就是说，在旋转过程中，就相当于把2m³的气压缩成1m³的气，压力随之就提高，也就是说这个压力的**不是来自于外围的管网，而是来自于主机腔体内部容腔的变化，也就是所谓的内压缩。

　　螺杆鼓风机是传统罗茨和螺杆机型的衍伸机型，具有传统罗茨风机强制送风的特点，螺杆式机型具有一定自压缩，通过过量吸入达到超高的容积效率，双螺杆鼓风机采用的内压缩所需功耗要远远低于罗茨鼓风机采用的外压缩，而且内压缩过程是连续渐进的，气流脉动要低于罗茨鼓风机，所以螺杆鼓风机的噪音及稳定性也均优于罗茨鼓风机。

　　螺杆风机与罗茨风机区别说法三：

　　罗茨风机与螺杆风机有很大的区别，两者相似的地方同为鼓风机，都有正压负压分类!

　　1、起源不同

　　罗茨风机起源与美国，螺杆风机起源与德国。

　　螺杆风机*早由由德国人H.Krigar于1878年提出，直到1934年瑞典皇家理工学院A.Lysholm才奠定该项技术，并开始在工业上应用。

　　2、转子区别

　　罗茨鼓风机转子目前市面上*为流行的设计为渐开线型设计，而螺杆风机的转子为转子线性设计。

　　3、压力范围不同

　　市面上使用较为广泛的单级罗茨鼓风机压力范围在9.8到98kpa，双级罗茨风机的压力范围在98kpa到198kpa。螺杆风机压力范围0.3~1.2Bar

　　4、工作原理不同

　　罗茨鼓风机在运转和输送空气的过程中，转子间的腔体不发生容积变化，压力来自于把大量的空气强制送入一个体积比较小的外部腔体中，如：管道或储气罐中，外部腔体中空气的密度不断提高，从而产生压力，通常称之为“外压缩”。

　　而螺杆鼓风机的工作原理就跟罗茨鼓风机有些区别了，空气同样是吸进来，再排出去，吸气时，螺杆和螺杆之间的空腔是**的，当气体排出去后，腔体容积会变得很小很小，也就是说，在旋转过程中，就相当于把2m?的气压缩成1m?的气，同时，压力就提高到1bar，也就是这个压力的**不是来自于外围的管网，而是来自于压缩机内部容腔的变化。

       总之，罗茨风机具有价格优势，螺杆风机具有效率优势！具体如何来选择，这就要看各位消费者老板了！

瑞柘环保专业生产销售罗茨鼓风机！需要订购罗茨风机的请咨询我们的在线客服或拨打热线电话！

　　Answer: there are many differences between Roots blower and screw blower in the blower industry, such as the following three statements!

　　Difference between screw fans and roots fans in the industry I:

　　Compared with roots blower, screw blower has higher initial purchase cost than roots blower for products with the same air volume; However, in terms of energy consumption and maintenance cost, screw blower is lower than roots blower. And this advantage will become more significant with the increase of equipment pressure and use time. It can be seen from the following dimensions

　　1. Maintenance frequency: Roots blower is frequent, screw blower is low

　　2. Deployed quantity: Roots blower: one for standby and one for use, or two for use and one for standby, as appropriate; Screw blower, n+1

　　3. Energy consumption cost: Roots blower is high; Screw blower: starting from 0.5bar pressure, the energy-saving effect of internal compression increases with the increase of pressure

　　4. Operation time: Roots blower has large pulse and high temperature. It is generally used conservatively for about 8 hours to switch to the standby machine; Screw blower structure is equipped with heat dissipation jacket, with low operating temperature and 24-hour operation.

　　5. Purchase cost: Roots blower has low unit price and large quantity; Screw blower: the unit price is high and the purchase quantity is small.

　　Difference between screw fan and Roots fan II:

　　Roots blower and screw blower are both positive displacement fans. If they want to PK, it can be simply attributed to the different compression principles. Screw blower has more prominent advantages in energy saving, stability and low noise.

　　During the operation and air delivery of Roots blower, the volume of the cavity between rotors does not change. The pressure comes from the forced delivery of a large amount of air into an external cavity with a relatively small volume, such as a pipe or an air storage tank. The density of the air in the external cavity continues to increase, resulting in pressure, which is usually called "external compression". Roots blower has simple structure, forced air supply (the air supply volume is not affected by the exhaust pressure), and does not generate pressure by itself.

　　The working principle of the screw blower is somewhat different from that of the roots blower. The air is also sucked in and then discharged. When inhaled, the cavity between the screw and the screw is large. With the rotation of the screw rotor, the cavity volume will gradually become smaller. When the gas is discharged, the cavity volume will become very small. That is to say, in the process of rotation, it is equivalent to 2M ³ The air pressure is reduced to 1m ³ In other words, the pressure rise does not come from the peripheral pipe network, but from the change of the internal cavity of the host cavity, that is, the so-called internal compression.

　　Screw blower is an extension of traditional roots blower and screw blower. It has the characteristics of forced air supply of traditional roots blower. Screw blower has certain self compression and achieves ultra-high volumetric efficiency through excessive suction. The power consumption of internal compression used by twin-screw blower is far lower than that of external compression used by roots blower. In addition, the internal compression process is continuous and progressive, and the air flow pulsation is lower than that of Roots blower, Therefore, the noise and stability of screw blower are better than roots blower.

　　The third difference between screw fan and Roots fan:

　　Roots blower and screw blower are very different. They are similar to each other. They both have positive pressure and negative pressure classification!

　　1. Different origins

　　Roots blower originated in the United States, screw blower originated in Germany.

　　Screw fan was first proposed by German h.krigar in 1878. It was not until 1934 that a.lysholm of the Swedish Royal Institute of technology established this technology and began to be applied in industry.

　　2. Rotor difference

　　At present, the most popular design of Roots blower rotor in the market is involute linear design, while the rotor of screw fan is linear design.

　　3. Different pressure ranges

　　The pressure range of single-stage roots blower widely used in the market is 9.8 to 98kpa, and the pressure range of double-stage roots blower is 98kpa to 198kpa. Pressure range of screw fan: 0.3~1.2bar

　　4. Different working principles

　　During the operation and air delivery of Roots blower, the volume of the cavity between rotors does not change. The pressure comes from the forced delivery of a large amount of air into an external cavity with a relatively small volume, such as a pipe or an air tank. The density of the air in the external cavity continues to increase, resulting in pressure, which is usually called "external compression".

　　The working principle of the screw blower is somewhat different from that of the roots blower. The air is also sucked in and then discharged. When the air is sucked in, the cavity between the screw and the screw is the largest. When the gas is discharged, the cavity volume will become very small, that is to say, in the process of rotation, it is equivalent to 2m? Is reduced to 1m? At the same time, the pressure increases to 1bar, that is, the pressure increase does not come from the peripheral pipe network, but from the change of the internal cavity of the compressor.

　　In a word, roots blower has price advantage and screw blower has efficiency advantage! How to choose specifically depends on the consumer bosses!

　　Ruizhe environmental protection specializes in the production and sales of Roots blowers! If you need to order roots blower, please consult our online customer service or call the hotline!