答：鼓風機行業中關于羅茨風機和螺桿風機的區別有很多，例如以下三種說法！

　　行業中的螺桿風機與羅茨風機區別說法一：

　　螺桿鼓風機與羅茨鼓風機相比，同樣風量的產品，在初次采購成本螺桿風機要高于羅茨鼓風機;但在能耗及維護成本上，螺桿鼓風機低于羅茨鼓風機。且這種優勢會隨著設備壓力，以及使用的時間的增加，變得更加顯著。可以從以下幾個維度看出

　　1，維修頻率，羅茨鼓風機頻繁 螺桿鼓風機低

　　2，部署數量：羅茨鼓風機根據情況，一備一用或二用備一等;螺桿鼓風機根據使用情況，n+1.

　　3，能耗成本：羅茨鼓風機高;螺桿鼓風機：從0.5bar壓力開始，內壓縮節能效果，隨壓力的升高而升高

　　4，運行時間：羅茨鼓風機脈沖大，溫度高，保守使用一般8小時左右切換備機;螺桿鼓風機結構配備散熱夾套，運行溫度低，可24小時運行。

　　5，購置成本：羅茨鼓風機單價低，數量多;螺桿鼓風機：單價較高，購置數量少。

　　螺桿風機與羅茨風機區別說法二：

　　羅茨風機和螺桿鼓風機都是屬于容積式風機，如果兩者要進行pk的話，可以簡單歸結為壓縮原理的不同，螺桿鼓風機的節能、穩定、低噪優勢更為突出。

　　羅茨風機在運轉和輸送空氣的過程中，轉子間的腔體不發生容積變化，壓力來自于把大量的空氣強制送入一個體積比較小的外部腔體中，如：管道或儲氣罐中，外部腔體中空氣的密度不斷提高，從而產生壓力，通常稱之為“外壓縮”。羅茨鼓風機結構簡單，強制送風(送風量不受排氣壓力影響)，自身不產生壓力。

　　而螺桿鼓風機的工作原理就跟羅茨鼓風機有些區別了，空氣同樣是吸進來，再排出去，吸氣時，螺桿和螺桿之間的空腔是大的，隨著螺桿轉子的轉動，腔體體積會逐漸變小，當氣體排出去后，腔體容積會變得很小很小。也就是說，在旋轉過程中，就相當于把2m3的氣壓縮成1m3的氣，壓力隨之就提高，也就是說這個壓力的**不是來自于外圍的管網，而是來自于主機腔體內部容腔的變化，也就是所謂的內壓縮。

　　螺桿鼓風機是傳統羅茨和螺桿機型的衍伸機型，具有傳統羅茨風機強制送風的特點，螺桿式機型具有一定自壓縮，通過過量吸入達到超高的容積效率，雙螺桿鼓風機采用的內壓縮所需功耗要遠遠低于羅茨鼓風機采用的外壓縮，而且內壓縮過程是連續漸進的，氣流脈動要低于羅茨鼓風機，所以螺桿鼓風機的噪音及穩定性也均優于羅茨鼓風機。

　　螺桿風機與羅茨風機區別說法三：

　　羅茨風機與螺桿風機有很大的區別，兩者相似的地方同為鼓風機，都有正壓負壓分類!

　　1、起源不同

　　羅茨風機起源與美國，螺桿風機起源與德國。

　　螺桿風機*早由由德國人H.Krigar于1878年提出，直到1934年瑞典皇家理工學院A.Lysholm才奠定該項技術，并開始在工業上應用。

　　2、轉子區別

　　羅茨鼓風機轉子目前市面上*為流行的設計為漸開線型設計，而螺桿風機的轉子為轉子線性設計。

　　3、壓力范圍不同

　　市面上使用較為廣泛的單級羅茨鼓風機壓力范圍在9.8到98kpa，雙級羅茨風機的壓力范圍在98kpa到198kpa。螺桿風機壓力范圍0.3~1.2Bar

　　4、工作原理不同

　　羅茨鼓風機在運轉和輸送空氣的過程中，轉子間的腔體不發生容積變化，壓力來自于把大量的空氣強制送入一個體積比較小的外部腔體中，如：管道或儲氣罐中，外部腔體中空氣的密度不斷提高，從而產生壓力，通常稱之為“外壓縮”。

　　而螺桿鼓風機的工作原理就跟羅茨鼓風機有些區別了，空氣同樣是吸進來，再排出去，吸氣時，螺桿和螺桿之間的空腔是**的，當氣體排出去后，腔體容積會變得很小很小，也就是說，在旋轉過程中，就相當于把2m?的氣壓縮成1m?的氣，同時，壓力就提高到1bar，也就是這個壓力的**不是來自于外圍的管網，而是來自于壓縮機內部容腔的變化。

       總之，羅茨風機具有價格優勢，螺桿風機具有效率優勢！具體如何來選擇，這就要看各位消費者老板了！

瑞柘環保專業生產銷售羅茨鼓風機！需要訂購羅茨風機的請咨詢我們的在線客服或撥打熱線電話！

　　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!