What is The Role of Accumulators in Preventing Failures?

In the HVAC sector, rotary compressors play a crucial role, effectively compressing refrigerant gases to support heat exchange operations. Their compact structure and superior efficiency make them a preferred choice for delivering consistent cooling across a range of applications. Yet, despite their critical function, rotary compressors can fail due to various issues.

Q. What's the Cylinder Next to Rotary Compressor's Body? If you’ve had the chance to examine a rotary compressor, you will have noticed that these compressors are typically made up of two cylinders. One of these cylinders is the body and the other cylinder is the accumulator.

The body acts as the central enclosure for a variety of internal parts that play key roles in the compression of refrigerant gases. It offers essential structural integrity and accommodates crucial components including the rotor, blades, and the chamber where compression occurs. Situated next to the body is a cylinder referred to as the accumulator, a pivotal element in the functionality of rotary compressors. It significantly contributes to averting typical failures and guarantees the dependable performance of refrigeration and air conditioning systems.

Q. What Are the Common Failures in Rotary Compressors?

Rotary compressors are indispensable in many refrigeration and air conditioning systems, essential for compressing refrigerant gases to enable heat exchange. Yet, despite their critical role, they are susceptible to breakdowns, with a range of common problems often affecting their operation.

One of the causes that leads to the failure in rotary compressors is known as ‘locking’. It is caused by foreign objects entering the compression chamber. Given the extremely tight clearance in the chamber, often around 20 micrometers, even small debris can cause significant issues. To put this into perspective, a human hair, which is about 100 micrometers thick, far exceeds this clearance. When objects larger than this minimal space find their way into the chamber, they obstruct the movement of internal components, causing a locking effect. This prevents the compressor from operating correctly and can lead to motor damage, resulting in the compressor's failure.

Role of accumulators in preventing compressor failures is quite thorough

Debris Protection:

Accumulators are fitted with screens to block foreign objects from entering the compression chamber, safeguarding the compressor's internal components and minimizing malfunctions.

Liquid Refrigerant Prevention:

The design of accumulators, particularly their volume and cylindrical shape, helps prevent liquid refrigerant from directly entering the compression chamber.

The L tube design ensures that any liquid is properly vaporized before it can reach the compressor, protecting it from issues related to liquid refrigerant.

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