Low-Energy RM Screw Air Compressor

As a trusted China manufacturer, DECHUAN offers the Low-Energy RM Screw Air Compressor to help facility operators eliminate electrical waste in continuous air production. By integrating V-Shield plane-sealed O-ring technology, the internal fluid system prevents structural pressure leaks even under harsh thermal stress.

Eliminating Threaded Fitting Leaks via V-Shield Flange Coupling

This Low-Energy RM Screw Air Compressor replaces threaded fittings with V-Shield flat-face O-ring flange couplings fitted with 70 Shore A Viton seals.

Reusability: 

Flange couplings can be disassembled and re-torqued during oil changes without distorting mating faces.

Vibration Resistance: 

O-ring seats maintain seal integrity under 13 bar working pressures and severe vibration.

Oil Retention: 

Multi-stage air-oil separation limits oil carryover below 3–5 ppm, preserving air tool seals downstream.

Technical Specifications

Why Oil-Cooled IE5 Permanent Magnet Motors Outperform Air-Cooled Motors?

Standard air-cooled induction motors lose efficiency when ambient air temperatures rise in closed compressor rooms. The IP66 oil-cooled permanent magnet motor uses synthetic compressor fluid as a cooling medium, circulating it directly through the stator cooling jacket.

Class H insulation enables continuous motor operation at 180°C internal temperatures without demagnetizing the neodymium-iron-boron magnets, holding header pressure within ±0.1 bar during rapid consumption changes.

Target Applications and Duty Cycles

Customizable Low-Energy RM Screw Air Compressor electrical panels support global grid voltages (220V to 440V at 50Hz or 60Hz) without requiring external transformers.

Automotive Stamping: 

Supplies constant line pressure for air-actuated stamping clamps and robotic arms.

Pharmaceutical Packaging: 

Low oil carryover protects cleanroom pneumatic cylinders and capsule filling equipment.

Metal Processing: 

Drives pneumatic chucks and automated sheet feeders during heavy machining operations.

Food Processing: 

Powers high-speed bottling and bag sealing lines requiring stable pressure.

Rotor Thermodynamics and Volumetric Efficiency

Rotary screw compression efficiency depends on minimizing air backflow between male and female rotor interlobes. Standard symmetric rotors allow high-pressure air to re-enter lower-pressure intake chambers during compression, generating excessive friction heat and losing shaft power. The asymmetrical 5:6 rotor profile within this compressor optimizes fluid containment during rotation, delivering up to 11% more discharge air volume per kilowatt-hour of consumed energy.

When connected to plate heat exchangers, the lubricant oil loop transfers thermal energy into factory water circuits. Facilities can heat boiler feedwater or process water up to 70°C without burning additional natural gas.

Spare Parts Logistics and Maintenance Support

DECHUAN maintains complete spare parts support for the Low-Energy RM Screw Air Compressor to ensure long-term site reliability.

Service Bundles: 

Factory-matched 2,000-hour and 4,000-hour filter and separator kits shipped in single maintenance boxes.

Traceable Parts: 

Genuine replacement filters feature laser-etched serial numbers for online authenticity checks.

Service Frameworks: 

Supported by PartsCARE component delivery and PackageCARE full-coverage maintenance programs.

Frequently Asked Questions

How does the VSD drive stabilize pressure during sudden air demand increases?

The IE5 permanent magnet VSD alters motor RPM across a 40% to 100% speed range. When line pressure drops by 0.05 bar, the drive accelerates the motor within milliseconds to restore header pressure to the ±0.1 bar setpoint.

What maintenance steps clear high oil carryover above 5 ppm?

First, check the differential pressure gauge across the air-oil separator element. If the pressure drop exceeds 0.8 bar, replace the separator element and inspect the oil return line scavenge orifice for debris clogging.

What structural advantage does a non-welded cooler provide?

The Low-Energy RM Screw Air Compressor's non-welded top cooler utilizes mechanical expansion joints instead of rigid welded headers. This allows core tubes to expand and contract freely during thermal cycles without cracking header joints.