Screw chillers are one of the main cooling devices known in the industry. These chillers use compressors called screw compressors, which have a unique way of working and even have other applications besides being used in screw chillers. The compressor has male and female rotors that can drive each other or work based on timing gears.
Usually, the male rotor is connected to the motor and acts as the driving rotor, while the female rotor is driven. As the two rotors rotate, the volume of their grooves decreases, and as a result, the compression of the refrigerant decreases. We can see the operation steps in the following steps:
- First step: the inlet of the compressor takes the refrigerant.
- Second step: As the flood line moves in the discharge direction, the tooth space is reduced. . Compression takes place.
- Third stage: Compression continues until both rotors are in the discharge port. The pressure is high at this point.
- Fourth stage: with the flood line in the secretions, it empties the space of the refrigerant tooth
Parts, components and cycles of the screw compressor
🔱 Parts 🔱
A screw compressor is a positive displacement machine that has two helical screw rotors that mesh as shown in Figure 1. Two rotors create a working chamber, which is the basis of the work of the screw compressor. We can classify the parts as follows:
Rotor
There are two rotors, male and female rotor. Typically, the female rotor is larger than the male rotor. It is also driven by the prime mover and thus rotates the male rotor. which is often pneumatically or electrically controlled.
Prime Mover (usually an electric motor)
Depending on the design, the compressor gets its power from the electric motor. or any other main move. You can also expect to find different power transmission systems from different manufacturers and models. Oil and oil separator. Screw compressors are made of very high precision parts. It includes couplings, gears, pistons, housings and belts. The screw compressor also has an air dryer whose function is to remove water vapor from the air. This prevents serious operational problems in the system, including blockages and process corrosion.
Screw compressor applications
In the food processing industry, this product is important in food cooling, transportation under pressure and stirring. This product is also used in pharmaceutical facilities for packaging, aeration and tablet production. In summary, the machine is common in the following other industries:
Civil and construction engineering
Machines
Pulp and paper
Electronics
Automobiles
Theme parks
The benefits of screw compressor
Many industries use screw compressors due to ease of maintenance, overall economy and simplicity. The compressor is praised for its high specific output, which crowns the usually small size of the devices. Due to the few parts, the maintenance is flawless. With the new technology, you can expect the screw compressor to work efficiently as well. Fewer parts means less vibration, another reason why district cooling facilities should install these compressors. Do not forget that refrigerant loss is almost non-existent for these products.