Rotary compressors
ROTARY COMPRESSORS
Why are they the best choice?
Efficiency > 20%
Reliability: 1/3 fewer structural components
+10°С ~ -35°С use one compressor for different cooling modes
Less vibration and noise
Compressor height only 195 mm
Various DC and AC power sources
Features of different types of compressors
Piston compressors
Low in vibration and noise because of the internal use of spring structure and muffler cavity.
Components QTY≥80, complex in assembly.
Small displacement with small cooling capacity, has an absolute advantage in the household refrigeration market below 1HP.
Rotary compressors
High COP, 20% higher than reciprocating, workable under LBP and MBP, stable performance.
1/3 less components than reciprocating,
The shapes of the parts are simple, mostly consisting of cylindrical surfaces, curved surfaces, or flat surfaces. The machining processes are straightforward, low cost compared with scroll compressor.
Used in various field, gradually expand to the application in refrigeration replacing reciprocating and scroll. replacing piston and scroll compressors.
SCROLL compressors
Volume coefficient is 10% higher than rotary, multiple chambers work simultaneously, uniform torque, stable performance with low noise and vibration.
Only 1/10 components of reciprocating, volume is reduced by about 30%, require high-precision vortex line , complex and difficult in assembly and inspection, high cost.
Used in AC, heat pump and refrigeration, mainly from 5HP to 15HP, not suitable for high pressure ratio and large pressure differential conditions. replacing piston and scroll compressors.
Comparison of rotary/piston
Energy efficiency
μ level precision machining with appropriate fit clearance and volume ratio designed for refrigeration application can improve volume efficiency, making the cooling capacity more than 20% higher than piston compressor of the same displacement.
For every one volume of gas pumped (cm³) by the compressor in the refrigeration system, electrical energy is consumed, which converts the heated gas into cold gas, and the power of this process is called the cooling capacity (W). And the main indicator of energy efficiency in this process is the amount of electricity consumed to produce the required amount of cold (cooling capacity).
Low noise level
Unique silencing technology on the refrigerant flow can reduce the noise of gas pulsation during suction and exhaust.
With double-cylinder structure inside, the refrigerant will be separated into two cylinders after suction.
The noise of gas backflow from the single suction port can be counteracted by that from the other cylinder
Liquid injection technology
Compressor cooling technology has significant advantages over other types of compressors:
- Effectively reduces the temperature of compressor exhaust gases
- Wider operating range, giving the compressor versatility in application at various temperatures of its use, both for refrigeration chambers (commercial equipment) with a temperature of +18°C, and for -25°C:
- Prevents oil degradation caused by high temperature
- Longer service life, lower failure rate during operation.
Low vibration level
With two rotors distributed in the 180° opposite direction of one crankshaft, the start and running torque of the compressor is small, so the operation is more stable.
Ensuring oil supply in a horizontal compressor
With a competent fairing to separate high and low pressure area, the differential pressure generated by the compressor during operation makes the oil supply possible even in horizontal form.
Boyard double oil pool patent ensures stable oil level and continuous oil supply to the cylinders.
Compact size for greater retail space
