答：鼓風(fēng)機(jī)行業(yè)中關(guān)于羅茨風(fēng)機(jī)和螺桿風(fēng)機(jī)的區(qū)別有很多，例如以下三種說(shuō)法！

　　行業(yè)中的螺桿風(fēng)機(jī)與羅茨風(fēng)機(jī)區(qū)別說(shuō)法一：

　　螺桿鼓風(fēng)機(jī)與羅茨鼓風(fēng)機(jī)相比，同樣風(fēng)量的產(chǎn)品，在初次采購(gòu)成本螺桿風(fēng)機(jī)要高于羅茨鼓風(fēng)機(jī);但在能耗及維護(hù)成本上，螺桿鼓風(fēng)機(jī)低于羅茨鼓風(fēng)機(jī)。且這種優(yōu)勢(shì)會(huì)隨著設(shè)備壓力，以及使用的時(shí)間的增加，變得更加顯著?？梢詮囊韵聨讉€(gè)維度看出

　　1，維修頻率，羅茨鼓風(fēng)機(jī)頻繁 螺桿鼓風(fēng)機(jī)低

　　2，部署數(shù)量：羅茨鼓風(fēng)機(jī)根據(jù)情況，一備一用或二用備一等;螺桿鼓風(fēng)機(jī)根據(jù)使用情況，n+1.

　　3，能耗成本：羅茨鼓風(fēng)機(jī)高;螺桿鼓風(fēng)機(jī)：從0.5bar壓力開(kāi)始，內(nèi)壓縮節(jié)能效果，隨壓力的升高而升高

　　4，運(yùn)行時(shí)間：羅茨鼓風(fēng)機(jī)脈沖大，溫度高，保守使用一般8小時(shí)左右切換備機(jī);螺桿鼓風(fēng)機(jī)結(jié)構(gòu)配備散熱夾套，運(yùn)行溫度低，可24小時(shí)運(yùn)行。

　　5，購(gòu)置成本：羅茨鼓風(fēng)機(jī)單價(jià)低，數(shù)量多;螺桿鼓風(fēng)機(jī)：?jiǎn)蝺r(jià)較高，購(gòu)置數(shù)量少。

　　螺桿風(fēng)機(jī)與羅茨風(fēng)機(jī)區(qū)別說(shuō)法二：

　　羅茨風(fēng)機(jī)和螺桿鼓風(fēng)機(jī)都是屬于容積式風(fēng)機(jī)，如果兩者要進(jìn)行pk的話，可以簡(jiǎn)單歸結(jié)為壓縮原理的不同，螺桿鼓風(fēng)機(jī)的節(jié)能、穩(wěn)定、低噪優(yōu)勢(shì)更為突出。

　　羅茨風(fēng)機(jī)在運(yùn)轉(zhuǎn)和輸送空氣的過(guò)程中，轉(zhuǎn)子間的腔體不發(fā)生容積變化，壓力來(lái)自于把大量的空氣強(qiáng)制送入一個(gè)體積比較小的外部腔體中，如：管道或儲(chǔ)氣罐中，外部腔體中空氣的密度不斷提高，從而產(chǎn)生壓力，通常稱之為“外壓縮”。羅茨鼓風(fēng)機(jī)結(jié)構(gòu)簡(jiǎn)單，強(qiáng)制送風(fēng)(送風(fēng)量不受排氣壓力影響)，自身不產(chǎn)生壓力。

　　而螺桿鼓風(fēng)機(jī)的工作原理就跟羅茨鼓風(fēng)機(jī)有些區(qū)別了，空氣同樣是吸進(jìn)來(lái)，再排出去，吸氣時(shí)，螺桿和螺桿之間的空腔是大的，隨著螺桿轉(zhuǎn)子的轉(zhuǎn)動(dòng)，腔體體積會(huì)逐漸變小，當(dāng)氣體排出去后，腔體容積會(huì)變得很小很小。也就是說(shuō)，在旋轉(zhuǎn)過(guò)程中，就相當(dāng)于把2m3的氣壓縮成1m3的氣，壓力隨之就提高，也就是說(shuō)這個(gè)壓力的**不是來(lái)自于外圍的管網(wǎng)，而是來(lái)自于主機(jī)腔體內(nèi)部容腔的變化，也就是所謂的內(nèi)壓縮。

　　螺桿鼓風(fēng)機(jī)是傳統(tǒng)羅茨和螺桿機(jī)型的衍伸機(jī)型，具有傳統(tǒng)羅茨風(fēng)機(jī)強(qiáng)制送風(fēng)的特點(diǎn)，螺桿式機(jī)型具有一定自壓縮，通過(guò)過(guò)量吸入達(dá)到超高的容積效率，雙螺桿鼓風(fēng)機(jī)采用的內(nèi)壓縮所需功耗要遠(yuǎn)遠(yuǎn)低于羅茨鼓風(fēng)機(jī)采用的外壓縮，而且內(nèi)壓縮過(guò)程是連續(xù)漸進(jìn)的，氣流脈動(dòng)要低于羅茨鼓風(fēng)機(jī)，所以螺桿鼓風(fēng)機(jī)的噪音及穩(wěn)定性也均優(yōu)于羅茨鼓風(fēng)機(jī)。

　　螺桿風(fēng)機(jī)與羅茨風(fēng)機(jī)區(qū)別說(shuō)法三：

　　羅茨風(fēng)機(jī)與螺桿風(fēng)機(jī)有很大的區(qū)別，兩者相似的地方同為鼓風(fēng)機(jī)，都有正壓負(fù)壓分類!

　　1、起源不同

　　羅茨風(fēng)機(jī)起源與美國(guó)，螺桿風(fēng)機(jī)起源與德國(guó)。

　　螺桿風(fēng)機(jī)*早由由德國(guó)人H.Krigar于1878年提出，直到1934年瑞典皇家理工學(xué)院A.Lysholm才奠定該項(xiàng)技術(shù)，并開(kāi)始在工業(yè)上應(yīng)用。

　　2、轉(zhuǎn)子區(qū)別

　　羅茨鼓風(fēng)機(jī)轉(zhuǎn)子目前市面上*為流行的設(shè)計(jì)為漸開(kāi)線型設(shè)計(jì)，而螺桿風(fēng)機(jī)的轉(zhuǎn)子為轉(zhuǎn)子線性設(shè)計(jì)。

　　3、壓力范圍不同

　　市面上使用較為廣泛的單級(jí)羅茨鼓風(fēng)機(jī)壓力范圍在9.8到98kpa，雙級(jí)羅茨風(fēng)機(jī)的壓力范圍在98kpa到198kpa。螺桿風(fēng)機(jī)壓力范圍0.3~1.2Bar

　　4、工作原理不同

　　羅茨鼓風(fēng)機(jī)在運(yùn)轉(zhuǎn)和輸送空氣的過(guò)程中，轉(zhuǎn)子間的腔體不發(fā)生容積變化，壓力來(lái)自于把大量的空氣強(qiáng)制送入一個(gè)體積比較小的外部腔體中，如：管道或儲(chǔ)氣罐中，外部腔體中空氣的密度不斷提高，從而產(chǎn)生壓力，通常稱之為“外壓縮”。

　　而螺桿鼓風(fēng)機(jī)的工作原理就跟羅茨鼓風(fēng)機(jī)有些區(qū)別了，空氣同樣是吸進(jìn)來(lái)，再排出去，吸氣時(shí)，螺桿和螺桿之間的空腔是**的，當(dāng)氣體排出去后，腔體容積會(huì)變得很小很小，也就是說(shuō)，在旋轉(zhuǎn)過(guò)程中，就相當(dāng)于把2m?的氣壓縮成1m?的氣，同時(shí)，壓力就提高到1bar，也就是這個(gè)壓力的**不是來(lái)自于外圍的管網(wǎng)，而是來(lái)自于壓縮機(jī)內(nèi)部容腔的變化。

       總之，羅茨風(fēng)機(jī)具有價(jià)格優(yōu)勢(shì)，螺桿風(fēng)機(jī)具有效率優(yōu)勢(shì)！具體如何來(lái)選擇，這就要看各位消費(fèi)者老板了！

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　　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!