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Product Description
This is a mid-range industrial-grade air compressor. Its core features are:
• Fixed Speed: Utilizes a commercial frequency (50Hz) asynchronous motor, resulting in a constant, non-adjustable speed.
• Air Cooled: A built-in fan and radiator cool the compressor and lubricating oil using air, eliminating the need for external cooling water.
• Screw: Uses a pair of intermeshing helical rotors (male and female) to compress air, providing a reliable and efficient compression method.
Features and Advantages
1. Sturdy Structure and High Reliability: The technology is highly mature, the design is simple, and it provides long-term stable operation under rated operating conditions with a relatively low failure rate.
2. Low Initial Investment Cost: Compared to variable-frequency screw compressors of the same power, its purchase cost is more competitive, offering a high cost-performance ratio.
3. Easy Maintenance: Due to its standardized structure and high component compatibility, the maintenance process is simple, requiring relatively low technical skills.
4. Air Cooling Advantage: No complex cooling water system (such as cooling towers, pumps, and piping) is required, making installation simple and particularly suitable for water-scarce or cold regions (to avoid freezing issues).
Main Disadvantages (Compared to VFDs)
• High Energy Consumption: The start-stop control method results in high no-load energy consumption, and the motor always runs at maximum speed, resulting in low efficiency at partial load.
• High Starting Shock: The power frequency starting current can reach 5-7 times the rated current, significantly impacting the power grid.
• Air Pressure Fluctuation: With upper and lower pressure limits, air pressure fluctuates within the set range, making the air supply pressure less stable than that of an VFD.
Main Application Scenarios
Suitable for medium-to-large industrial applications with relatively stable and continuous gas demand, such as:
• Large manufacturing plants: Such as automotive, machinery, and hardware processing workshops, serving as the primary or auxiliary gas source for centralized air supply.
• Chemical and plastics industries: Providing power for injection molding machines, bottle blow molding machines, and other equipment.
• Mines and construction sites: Providing compressed air for rock drills, pneumatic tools, and other equipment.
• Other industries: Textile, metallurgy, and food processing (requiring post-processing equipment to meet process requirements).
FAQS
Q1: Why does it consume more electricity than a variable frequency air compressor?
A: Mainly due to its "start-stop" control method. When unloaded, the motor continues to idle at rated speed, consuming approximately 30%-40% of its rated power, wasting energy. However, a variable frequency air compressor reduces its speed during periods of low demand, reducing energy consumption proportionally.
Q2: What is the typical air output of a machine in this power range (55-75kW)?
A: Depending on the design and pressure, the rated air output is typically between 10-15 m³/min (cubic meters per minute), with a common pressure of 0.8 MPa (8 bar).
Q3: Is it suitable for applications with large fluctuations in air volume?
A: Not suitable. The greater the fluctuation in air volume demand, the more frequent the machine starts and stops, resulting in increased energy waste and shortened contactor and motor life. In such applications, a variable frequency air compressor is the preferred choice.
Q4: Which is better: air cooling or water cooling?
A: Each has its advantages and disadvantages. The advantages of air cooling are simple installation and the absence of water. However, its disadvantages are significant impact from ambient temperature, and cooling effectiveness may decline in extremely high temperatures. Water cooling provides more stable cooling and potentially longer engine life, but requires a cooling water system, which is complex and expensive to install.
Q5: What should I pay attention to during routine maintenance?
A: The key is the regular replacement of the "three filters and one oil":
• Air filter: Prevents dust from entering the rotor.
• Oil filter: Filters impurities from the lubricating oil.
• Oil separator: Separates oil from the compressed air.
• Lubricating oil: Lubricates, cools, and seals the rotor.
Strictly follow the manufacturer's specified maintenance intervals; failure to do so will seriously impact the life and performance of the equipment.
Product Description
This is a mid-range industrial-grade air compressor. Its core features are:
• Fixed Speed: Utilizes a commercial frequency (50Hz) asynchronous motor, resulting in a constant, non-adjustable speed.
• Air Cooled: A built-in fan and radiator cool the compressor and lubricating oil using air, eliminating the need for external cooling water.
• Screw: Uses a pair of intermeshing helical rotors (male and female) to compress air, providing a reliable and efficient compression method.
Features and Advantages
1. Sturdy Structure and High Reliability: The technology is highly mature, the design is simple, and it provides long-term stable operation under rated operating conditions with a relatively low failure rate.
2. Low Initial Investment Cost: Compared to variable-frequency screw compressors of the same power, its purchase cost is more competitive, offering a high cost-performance ratio.
3. Easy Maintenance: Due to its standardized structure and high component compatibility, the maintenance process is simple, requiring relatively low technical skills.
4. Air Cooling Advantage: No complex cooling water system (such as cooling towers, pumps, and piping) is required, making installation simple and particularly suitable for water-scarce or cold regions (to avoid freezing issues).
Main Disadvantages (Compared to VFDs)
• High Energy Consumption: The start-stop control method results in high no-load energy consumption, and the motor always runs at maximum speed, resulting in low efficiency at partial load.
• High Starting Shock: The power frequency starting current can reach 5-7 times the rated current, significantly impacting the power grid.
• Air Pressure Fluctuation: With upper and lower pressure limits, air pressure fluctuates within the set range, making the air supply pressure less stable than that of an VFD.
Main Application Scenarios
Suitable for medium-to-large industrial applications with relatively stable and continuous gas demand, such as:
• Large manufacturing plants: Such as automotive, machinery, and hardware processing workshops, serving as the primary or auxiliary gas source for centralized air supply.
• Chemical and plastics industries: Providing power for injection molding machines, bottle blow molding machines, and other equipment.
• Mines and construction sites: Providing compressed air for rock drills, pneumatic tools, and other equipment.
• Other industries: Textile, metallurgy, and food processing (requiring post-processing equipment to meet process requirements).
FAQS
Q1: Why does it consume more electricity than a variable frequency air compressor?
A: Mainly due to its "start-stop" control method. When unloaded, the motor continues to idle at rated speed, consuming approximately 30%-40% of its rated power, wasting energy. However, a variable frequency air compressor reduces its speed during periods of low demand, reducing energy consumption proportionally.
Q2: What is the typical air output of a machine in this power range (55-75kW)?
A: Depending on the design and pressure, the rated air output is typically between 10-15 m³/min (cubic meters per minute), with a common pressure of 0.8 MPa (8 bar).
Q3: Is it suitable for applications with large fluctuations in air volume?
A: Not suitable. The greater the fluctuation in air volume demand, the more frequent the machine starts and stops, resulting in increased energy waste and shortened contactor and motor life. In such applications, a variable frequency air compressor is the preferred choice.
Q4: Which is better: air cooling or water cooling?
A: Each has its advantages and disadvantages. The advantages of air cooling are simple installation and the absence of water. However, its disadvantages are significant impact from ambient temperature, and cooling effectiveness may decline in extremely high temperatures. Water cooling provides more stable cooling and potentially longer engine life, but requires a cooling water system, which is complex and expensive to install.
Q5: What should I pay attention to during routine maintenance?
A: The key is the regular replacement of the "three filters and one oil":
• Air filter: Prevents dust from entering the rotor.
• Oil filter: Filters impurities from the lubricating oil.
• Oil separator: Separates oil from the compressed air.
• Lubricating oil: Lubricates, cools, and seals the rotor.
Strictly follow the manufacturer's specified maintenance intervals; failure to do so will seriously impact the life and performance of the equipment.
