scroll compressor

Only single phase scroll compressors would continue to run in reverse after the power comes back on.

Until recently, scroll compressors could only operate at full capacity when powered.

If this happens, the scroll compressor will stop pumping.

They found through testing that the scroll compressor design delivered better reliability and energy efficiency in operation.

Scroll compressors utilize different methods of protection inside the compressor to handle difficult situations.

Recently, scroll compressors have been manufactured that provide part-load capacity within a single compressor.

Running scroll compressor in reverse for several minutes would normally not damage the compressor.

Scroll compressors tend to be very compact and smooth running and so do not require spring suspension.

Scroll compressors make less sound than conventional compressors, and have proven to be quite efficient.

Scroll compressors also simplify the piping design, since they require no external connection for the primary coolant.

Reciprocating compressors often have better unloading capabilities than scroll compressors.

Emerson manufactures a scroll compressor that is capable of varying the refrigerant flow as per requirement.

Some compressor types such as the scroll compressor use a continuously shrinking compression volume.

Scroll compressors are also positive displacement compressors.

Scroll compressors have fewer moving parts than reciprocating compressors which, theoretically, should improve reliability.

Scroll compressors are more vulnerable to introduced debris, as any debris need to pass through at least two closed compression pockets.

This inefficiency is caused by continuously changing volume of the scroll compressor compression pocket during the vapor injection process.

The involute of a circle is also an important shape in gas compressing, as a scroll compressor can be built based on this shape.

The scroll compressors are more efficient in this case because they do not have a dynamic discharge valve that introduces additional throttling losses.

Scroll compressors, made from two interleaved Archimedean spirals of the same size, are used for compressing liquids and gases.

However, reciprocating compressor have multiple cylinders (typically, anywhere from two to six), while scroll compressors only have one compression element.

Small size of a scroll compressor and quiet operation allows for the unit to be built into high power density computers, like IBM mainframes.

Rotary vane pumps - similar to scroll compressors, these have a cylindrical rotor encased in a similarly shaped housing.

The first practical scroll compressors did not appear on the market until after World War II, when higher-precision machine tools permitted their construction.