The difference between a scroll machine and a screw machine

Scroll machine and screw machine are two different kinds of mechanical equipment, which have significant differences in working principle, structure, scope of application and energy consumption. The following is a detailed comparison of the two devices:

1. working principle

scroll machine: The working principle of the scroll machine is based on the principle of kinetic energy conversion, that is, the kinetic energy conversion is realized by the rotation of the turbine blades. When the scroll machine is running, the fluid flowing into the rotating machine will generate centrifugal force under the action of the blades, forming vortices or vortices. These vortices will continue to shear, friction and collision, resulting in an increase in the kinetic energy of the liquid or gas, resulting in intense Mixing and stirring effect.

Screw machine: The working principle of the screw machine is based on the principle of volume compression. It uses the specific shape rotation motion of the two screws to change the volume, thereby increasing the pressure of the fluid. The driving rotor has convex teeth outside the pitch circle, and the driven rotor has concave teeth inside the pitch circle. With the rotation of a pair of screws, the purpose of sealing gas and compressing gas is achieved.

2. structure

scroll machine: The main structure of the scroll machine includes eccentric shaft, turbine, compression chamber and suction chamber and other components. Its structure is relatively complex, but it is easy to use and easy to maintain.

Screw machine: The structure of the screw machine is relatively complex. It not only contains one or more screws, but also includes other important components such as motors, electronic control systems, hose sets, and refrigeration oil systems. This makes the screw machine more stable and reliable during operation.

3. scope of application

scroll machine: Scroll machine is suitable for conveying low viscosity fluid, such as pumping water, sewage and so on. The advantage is that the kinetic energy of the fluid can be converted into pressure energy, thereby achieving efficient delivery.

Screw machine: screw machine is more suitable for high viscosity media transport and compression, such as asphalt, chemical raw materials. Since the working principle of the screw machine is based on volume compression, it can effectively process high-viscosity media and provide a stable compression effect.

4. energy consumption

scroll machine: The energy consumption of the scroll machine is relatively low. Since the fluid will not be subjected to large resistance during rotation, energy loss can be reduced and more efficient energy utilization can be achieved.

Screw machine: In contrast, the energy consumption of screw machine is higher. This is because during the compression process, the screw machine needs to consume more energy to change the volume and increase the pressure of the fluid.