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Products -» Comer Screw Compressors
Comer Screw Compressors
COMER
 COMER is one of the global well-known screw compressor suppliers, located in Milan Italy - the center of Refrigeration/HVAC industry in Europe. Comer is dedicated to develop the first class products with high reliability, competitive price and excellent efficiency to the international customers, both creating & sharing win-win situation.
Recent years, besides advanced air conditioning screw compressor, Comer is continuously developing low temperature refrigeration screw compressor, inverter screw compressor, open type screw compressor, and centrifugal compressors.
COMER’s air conditioning screw compressor - V series, which includes many models from 25RT~500RT, are 100% applied and suitable in water cooled, air cooled, heat pump, and thermo storage system application. Comer has also developed a low temperature LH series for use in minus temperature applications. Besides Comer also has a dedicated screw technology for R134a gas.
Features of COMER V and LH Series Semi-hermetic screw compressors are
V and LH Series refrigerant screw compressor has capacity ranging from 25~500USRT and displacements (60/50Hz) from 118/98 to 1832/1523 m3/h. They are extensively installed in thermo storage, water-cooled and air-cooled chillers, flooded-type chillers, heat pump applications and marine applications.
- Suitable for low temperature and medium temperature application, refrigeration and air-conditioning application, thermal-storage and heat pump application.
- The latest 5 to 6 patented screw rotor profile with excellent efficiency.
- Compatible with different refrigerant R22, R134a, R407C, R404A, R507C.
- Cooling capacity ranges from 25 USRT ~ 500 USRT, 50/60Hz.
- Step control and step less capacity control system.
- Low vibration and low noise.
- Robust and simplified structure, low failure rate, and high reliability.
- Designed to withstand liquid compression for a short period of time.
- Utilized the combination of axial and radial bearing design for axial and radial load, plus Alpha balance piston which dramatically extend the bearing life by 2.5 to 3.5 times then normal.
- Equipped with PTC sensor and shorten the reaction time by 1/6 of the original reaction time.
- IP-54 level compressor.(water-proof, anti-dust)
- Oil cooler circuit design application.
- Additional P pressure differential port, equipped with oil level switch and oil drain valve in order to protect the compressor effectively.
- Use of non-asbestos gaskets and solenoid valve gasket.
- Equipped with additional accessories for customer's different application.
- Overall range of volume ratio (Vi) for different working condition to avoid over or under compression
COMER V Series Semi-hermetic screw compressors are available in two Series
| Series |
Refrigerant |
Range and Special Features |
| V – A |
R134a |
- Specifically designed compressor for R-134a gas
- Specifically designed for use in Water Cooled Chillers
- Available from 17TR to 285 TR in single compressor
|
| V – B |
R134a, R22, R407C, R404A, R507A |
- Designed for universal gas operation
- Specifically designed for use in Water Cooled Chillers
- Range: R134a (17 TR to 285 TR), R22 ( 25 TR to 450 TR ), R407C ( 25 TR to 420 TR ), R 404A (25 TR to 430 TR ), R 507A ( 25 TR to 430 TR )
|
| V - AF |
R134a |
- Specifically designed compressor for R-134a gas
- Specifically designed for use in Air Cooled Chillers
- Available from 17TR to 285 TR in single compressor
|
| V - BF |
R134a, R22, R407C, R404A, R507A |
- Designed for universal gas operation
- Specifically designed for use in Water Cooled Chillers
- Range: R134a (17 TR to 285 TR), R22 (25 TR to 450 TR ), R407C (25 TR to 425 TR ), R 404A (25 TR to 430 TR ), R 507A (25 TR to 430 TR )
|
| Note: All design calculations based on 3 degree C evaporating temperature and 38 degree C condensing temperature |
| Series |
Refrigerant |
Range |
| LH Series |
R22 |
14 TR to 280 TR |
| LH Series |
R404A |
14 TR to 260 TR |
| LH Series |
R507A |
14 TR to 250 TR |
| Note: All design calculations based on -10 degree C evaporating temperature and 40 degree C condensing temperature |
Key Technical Features of COMER V Series Semi-hermetic screw compressors are
High Efficiency Motor
- Available for part winding start or star delta start
- Custom-made for specified voltage and power frequency
- Two options A & B, according to operating conditions and type of refrigerant
- Optimum design of slot inside motor casing
- Patented motor cooling design in ducts of refrigerant flow encompassing stator that provides the best dissipation of heat
- Sliding fit stator for easier installation and removal
Economiser operation with floating ECO Port
- Enhance cooling capacity as well as energy efficiency
- Sustain optimum medium pressure by vapor injection through specially-designed slots in slide valve and compressor casing
- Effective under partial and full load
- Position of medium pressure will vary with injection port in slide valve
High Efficiency Screw Rotor Profile
- 5-to-6 rotor profile patented in US, UK, Japan, Taiwan and China.
- Designed according to characteristics of refrigerants
- Hyper Volume efficiency and minimum clearance
Dual Capacity Control
- Flange on Solenoid coil easy installation
- 3-step / 4-step or continuous (33%~100%/25%~100%) capacity control system
- Interchangeable by varying control logic without modification of solenoid valves
Durable Bearing Structure
- 11 High quality bearings (radial and axial)
- Additional two bearings for backward rotation
- Alpha balance piston against axial thrust
- Heavy duty design
- Resulting in longer bearing life compared to traditional 9 bearing design
Wide Vi Selection
- Built-in Volume ratio (Vi ~ 2.2, 2.6, 3.0, 3.5)
- Exactly matching compression ratio without over or under compression
- Suitable for separate applications like refrigeration, water cooled chiller, air cooled chiller and heat pump
High Performance Integral Oil Separator
- Detachable demister for cleaning
- Finer size of mesh
- Low pressure drop and oil carry over
Total Protection and Accessories
- Motor Temperature Sensor
- Built in PT 100 (1000 Ohms) installed in motor winding
- Accurately reflect corresponding resistance (convert to temperature of motor)
- Controller can precisely regulate liquid injection and refrigerant volume accordingly.
- Discharge Temperature Sensor and Motor Temperature Thermistor
- Totally integrated
- Effectively protects compressor in advance when abnormal alarm occurs
- Liquid Injection and Oil Cooler Function (Port and Stop Pin)
- Both available on every HANBELL screw compressor
- Oil Level and Flow Switch
- Ensure sufficient lubricant in compressor for better lubrication, capacity control, cooling and sealing
- Heater (150 W & 300 W)
- Increases lubricants flow ability when compressor restarts after a long term stop
- Pressure Differential Port
- Easily detects clog in cartridge of oil filter
- Assure smooth circulation of oil system
Approval and Certifications
- Production by SOP conformed to major quality standards
- Approved by ISO 9001-2000, UL, CE (PED), Electronic Apparatus for Explosive atmospheres (EX, China), Lloyd’s Register (Vessel), Symbol of Excellence in Taiwan
Other Advantages
- Low noise level and minute vibration
- Fewer moving parts in screw compressor than reciprocating compressors
- Compact geometry for layout
- No foundation required
Key Technical Features of the LH Series Model are:
- 25 models with capacity densely covered between 25 and 500 USRT. More models establish a match between demand and supply of capacity
High Efficiency of Motor
- Available for part winding start or star delta start
- Custom-made for specified voltage and power frequency
- Design according to high-compression ratio application and type of refrigerant.
- Patented motor cooling design in ducts of refrigerant flow encompassing stator that provides the best dissipation of heat
Economiser operation with floating ECO Port
- Enhance cooling capacity as well as energy efficiency
- Sustain optimum medium pressure by vapor injection through specially-designed slots in slide valve and compressor casing
- Effective under partial and full load
- Position of medium pressure will vary with injection port in slide valve
High Efficiency Screw Rotor Profile
- 5-to-6 rotor profile patented in US, UK, Japan, Taiwan and China.
- Designed according to characteristics of refrigerants
- Hyper Volume efficiency and minimum clearance
Adjustable Volume Ratio
- Volume ratio (Vi) could be adjusted continuously between 2.2 and 4.8 according to operation condition for LA~280
- Eliminate loss of work due to over r under compression
- Adjusting by turns of rod corresponding to specific Vi
Versatile Application
- Universal to refrigerant R22, R404A, R507A
- Compressor designed for low-temperature application with SST as low as minus 50 degree C
Dual Capacity Control
- Flange on Solenoid coil easy installation
- 3-step / 4-step or continuous (33%~100%/25%~100%) capacity control system
- Interchangeable by varying control logic without modification of solenoid valves
Long-life Bearing Structure
- High quality bearings (radial and axial)
- Additional two bearings for backward rotation
- Heavy duty design
Total Protection and Accessories
- Motor Temperature Sensor
- Built in PT 100 (1000 Ohms) installed in motor winding
- Accurately reflect corresponding resistance (convert to temperature of motor)
- Controller can precisely regulate liquid injection and refrigerant volume accordingly.
- PTC Discharge Temperature Sensor and Motor Temperature Thermistor
- Totally integrated
- Effectively protects compressor in advance when abnormal alarm occurs
- Additional Cooling (Optional)
- Oil cooler, oil injection to compression chamber, liquid injection to compression chamber and liquid injection to motor
- Combination of above functions according to operation conditions.
- Oil Flow Switch and Oil Return Solenoid Valve
- Ensure sufficient lubricant in compressor for better lubrication, capacity control, cooling and sealing
- External Oil Separator
- Low oil carry-over
- Finest demister with negligible pressure drop
Approval and Certifications
- Production by SOP conformed to major quality standards
- Approved by ISO 9001-2000, UL, CE (PED), Electronic Apparatus for Explosive atmospheres (EX, China), Lloyd’s Register (Vessel), Symbol of Excellence in Taiwan
Other Advantages
- Low noise level and minute vibration
- Fewer moving parts in screw compressor than reciprocating compressors
- Compact geometry for layout
- No foundation required
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