What is the comparison between foreign roots fans and domestic ones?

Under normal circumstances, the imported ones must be stronger than the domestic ones, but the imported ones are easy to buy fakes, and there are too many high-quality imitations, which are difficult to distinguish. Considering the domestic Changfeng, Jingong and other brands are good, the leather is durable, and the maintenance of spare parts is more convenient than the imported ones, and the imported ones are broken, and the maintenance is too troublesome. Some of the imported ones are still made in Vietnam, and if you think about it, the best ones can be stronger than the domestic ones, and China is the world's largest manufacturing plant.

The domestic roots fan technology is very mature. The cost performance is very high, and it is not necessary to use imported machines.

It is said that in 1854, the American Roth brothers invented this kind of fan in the process of designing the hydro wheeler, which had a great influence at that time, and this reed disturbance also opened up a new way for the era of the fan. So how does a roots blower work? How is it different from other wind turbines?

Schematic diagram of the working principle of the three-lobe roots blower.

A roots blower is a positive displacement blower that passes through a pair of rotors'Meshing'**There is a gap between the subs, and they do not touch each other) to separate the air intake, and the rotor is driven by a pair of synchronous gears to move in the opposite direction, and the inhaled gas is pushed from the suction port to the exhaust port without internal compression. When the gas arrives at the exhaust port, it is pressurized by the return of high-pressure gas on the exhaust side, and the gas is transported.

Schematic diagram of roots blower working original branches.

Roots blower is a transliteration of English roots blower, roots is an American surname, translated as roots, because a pair of American brothers named Roots, invented roots blower, so named after their surname, and later this product came to China was translated into roots!

Therefore, Roots is just a name, it represents a new type of blower, this kind of fan is different from the ordinary fan that relies on blades, the principle of this kind of fan is to squeeze out by the rotation of the impeller, the pressure is much higher than that of the ordinary fan, and it has the characteristics of forced air supply. In many cases, it can be used as an alternative to an air pump.

The turbocharger of the roots blower is similar to the turbocharger of the car, which is a positive displacement twin-screw three-blade blower, which has the function of forced air supply and is suitable for places that need forced air supply. Of course, the resistance of the forced air supply should not exceed the tolerance range of the roots blower.

Roots blower is a positive displacement three-lobe blower, there are TSR series, TSR-H series, TSR-V series, roots blower is very widely used, as long as the pressure and air volume are selected correctly, it can be said that it is more economical and environmentally friendly than other types of fans, and the air pressure generated is much higher than that of ordinary fans, and it has the characteristics of forced air supply. In many industries, it can replace ordinary air pumps.

The inventor of the roots blower principle is the roots brothers of the United States, and in honor of this invention, the principle is named after them. When the fan is used for positive pressure air supply, we call it a roots blower, and if it is used for negative pressure suction, it is called a roots pump.

What we generally call fans include axial fans, centrifugal fans, etc. Their principle is similar to that of electric fans, which are driven by the rotation of several blades, and these fans are characterized by large air volume, unstable air volume, low wind pressure, and air volume is greatly affected by wind pressure.

The roots blower is composed of two alternating three-bladed rotors that press the air out of the fan chamber, similar to the principle of an inflator cylinder. This kind of fan is characterized by relatively stable air volume, which is controlled by the rotation speed. The pressure is high, up to 90 kPa.