How Does electric scroll compressor Work?

To understand the different types and technologies of compressors, we first need to understand the two basic principles of compressing air. These are dynamic and displacement compression. In this article, we talk about the scroll compressor. This is a type of displacement compressor with wide applications in air-conditioning and refrigeration systems, heat pumps, and cars. 

Read more

Scroll compressors consist of two spiral-shaped scroll elements that are bolted together: a stationary scroll and an orbiting scroll driven by a motor. The process of compressing air in a scroll compressor involves several steps:

1. Oscillation: The scrolls oscillate in a continuous motion without metal-to-metal contact, compressing air in crescent-shaped pockets.
2. Orbiting Scroll Motion: The orbiting scroll, driven by a short-stroke crankshaft, moves eccentrically around the fixed scroll, creating suction that draws air in from the inlet at the top of the housing.
3. Compression: Air captured in pockets between the scrolls is gradually compressed as it moves toward the center.
4. Discharge: Compressed air is discharged from the outlet port at the center, where a non-return valve prevents backflow.
5. Stability: The 180° phase displacement provides radial stability, and the internal compression minimizes leakage due to lower pressure differences between air pockets.

By following these steps, scroll compressors achieve efficient and reliable air compression.

When most people think of air compressors, they probably imagine a bulky and loud machine. Scroll compressors are pretty much the opposite of that. They are oil-free, compact and relatively silent compared to other types of compressors.

Thanks to the simple design of the scroll compressor with only one moving part, this type of compressor is highly reliable and quieter compared to the piston and rotary screw compressor. This makes them perfect for sensitive working environments, like a dentist’s office. Another advantage of scroll compressors is energy efficiency. 

Similar to internal compression in a screw compressor, the amount of internal compression is determined by the discharge port. Due to the unique design of the discharge port, the scroll air compressor can compress more air or gas while using minimal power.

Compared to other compressors, these machines attain the highest efficiency level by volume. This is because there are no pistons to compress the gas.

The noise emission of a scroll air compressor is significantly lower than other compressors. The complete compression cycle takes 2.5 turns, including the suction, compression, and discharge revolution phases. These occur simultaneously while providing a constant flow of pulsation-free air.

For more information, please visit Leling.

Additional reading:
Unlock Performance: How to Upgrade Your JMC Main Shaft Today

The scroll air compressor offers smooth and vibration-free operations thanks to its scroll element. It hardly has any torque variation compared to a piston compressor. The simple design of the scroll air compressor contains only one moving part. This makes it highly reliable and quieter than equivalent piston and rotary screw compressors.

Scroll compressors are widely used in various industrial applications due to their efficiency and reliability. They meet the basic requirements of a general-purpose compressor and are commonly used in the food, refrigeration, air-conditioning, and transportation industries. For larger volume demands, oil-injected screw compressors may be more efficient.

There is an abundance of applications for quiet and energy-efficient compressors that produce absolutely clean air. Take the SF scroll compressor series from Atlas Copco, which has been a leader in this field for more than 60 years. Its unique characteristics make it ideal for many manufacturing processes for which clean, oil-free compressed air is a prerequisite. That is why the SF is the preferred choice for sensitive indoor environments, like hospitals but also labs, breweries, bakeries, dairy farms, electronics manufacturing, and even lens production.

The SF series features a capacity range of 1.9 to 7.6 l/s (4.03 to 16.10 cfm), a maximum working pressure of 10 bar (145 psi), and a dew point performance as low as 2°C/36°F. Its air-cooled scroll element ensures efficiency, reliability, and durability, while the premium efficiency IE3 class motor lowers energy consumption. Most importantly, the SF series produces absolutely clean air.

We hope this guide provides a good overview of whether or not a scroll compressor makes sense for your needs. If you'd like more information, feel free to get in touch. Our team is happy to point you in the right direction.

Modern HVAC systems have greatly improved our quality of life and made our living spaces more comfortable by allowing us to regulate indoor temperatures to our liking, during fluctuating weather throughout the year.

You must have wondered, how an HVAC system works, at least once in your lifetime. An HVAC system has various components that are essential to its operation, however, a compressor takes the prize for being the most important one, without which no HVAC system would function.

Compressors are as diverse as the heating and cooling systems that use them. Contractors and manufacturers are often faced with the dilemma of choosing the right compressor for their businesses. Understanding the operation of a compressor can help you fully understand its features and decide whether it is the right choice for your business or home. If you are one of those confused buyers and want to explore your options, then this article is for you.

In this article, we will introduce you to one of the most efficient compressors to date — the scroll compressor.

The scroll wrap comprises mainly two parts – a fixed scroll and an orbiting scroll.

The upper fixed scroll is connected to the outer frame, and the lower orbiting scroll combined with the motor’s shaft receives power from the motor.

The two upper and lower parts are interlocked and as the motor is driven, the scroll wrap moves in the form of a rotating curve to compress the refrigerant flowing into the space inside the wrap.

The low-temperature, low-pressure refrigerant flowing in from the cycle, moves along the shape inside the wrap, reducing its volume and increasing its temperature and pressure. The high-temperature, high-pressure refrigerant compressed in this way is discharged through the top and flows back into the system.

Let’s help you understand this better with the help of the simulation below. As can be seen in the 2D simulation below, the low-temperature and low-pressure refrigerant, as shown in blue, moves along the coil shape inside the wrap; as a result, the temperature and pressure of the refrigerant increase in the process (as shown in yellow and red color in the picture).

As we discussed in this article, scroll compressors come with improvements in scroll geometry, motor performance, and bearings designed to reduce friction, bringing the highest efficiency in cooling and heating applications.

In short, scroll compressors are a result of clever engineering and complex sub-components, combined together carefully to meet the requirements of the ever-growing HVAC market.

LG Gen 3 Scroll Compressor is a step ahead in the game and keeps up with the growing shift toward sustainable alternatives in the HVAC industry and is compatible with low GWP refrigerants like R32 and R454B.

LG is committed to providing you with world-class compressors and motors for optimum consumer experience. Stay tuned with LG for more updates on the latest HVAC technology.

For more information, please visit electric scroll compressor.