Spiral Compressors

Scroll spiral attached a flat plate or a base. Compressor unit consists of two corresponding scrolls which, when placed together form a series of vapor pockets between the two enmeshing spiral. All vapours pockets formed by enmeshing scrolls, filled with steam at different stages of compression.

The upper scroll remains stationary while the scroll bar at the bottom is driven compressor drive motor, orbiting around a fixed point in the fixed scroll. Suction pair is scroll unit when you open a form, along the perimeter edge of the scrolls. As orbit scroll turns, volume between the stationary orbit and scrolls becoming less and less compression vapor. Because the volume is reduced, steam pushed in the centre of the scrolls, where the discharge port is located. Die when the pair begins to enter the port of unloading, compression cycle ends.

No suction or discharge valves required in a scroll compressor therefore steam flow through the compressor is continuous. The smooth flow of steam through the compressor removes most couples pulsation flow losses and noise associated with valve systems. Division of suction and discharge locations significantly reduces heat transfer between the pairs, increasing the volumetric efficiency. Volumetric compressor efficiency improvement, since there is no gap in the volume required for this type of compression. Energy efficiency scroll compressor is relatively high, with a full load efficiency of almost equal, reciprocating and scroll compressors. Part of the load scroll (cap 10-20% higher than the piston compressors. As the device operates at part load the majority of its useful life, the energy savings are very high for scroll compressors.

In order to maintain high efficiency, internal leakage of the scroll compressor should be effectively controlled. Leaks can occur in spaces that form around the edges die enmeshing spiral, where the interface with the opposite Foundation is. Leaks are also common on the border between the parties (Boca) of two scrolls, where they come into contact with each other to form a pair pockets. Edge leakage can be managed using a compatible scroll and design of compressor so that the discharge pressure forces the scrolls together axially when the unit is operating. Flank of the diversion of controlled through the use of very accurately processed scrolls and sliding bushing mechanism that keeps the spiral die in orbit scroll in accordance against spiral stationary scrolling when the unit is operating.

One advantage of this design is that compatible function gives die compressor superior tolerance for processing liquid or foreign matter. Liquid allowance shall be made by allowing the scroll separate forms in the presence of liquid or pollutants. This improves the reliability of the compressor, eliminating the need for suction line accumulator or a crankcase heater in most systems. Compatible design also self-compensating the wear to the compressor does not lose effectiveness over time. Scrolls individual slightly when the device is switched off, so that the unit starts unloaded.

Like screw compressor scroll compressor constant volume ratio machine which operates at peak efficiency when the system pressure ratio is equal to the internal pressure compressors ratio, as described. Internal compression ratio scroll compressor is a function of the number of wraps die spiral and the location of the port of discharge. At the same time, the effectiveness of increased losses whenever the pressure coefficients are not equal, these losses are small when working in normal conditions...