Language

+86-15258555916

PRODUCTS

Home / Product

Air Refrigeration Unit Manufacturers

The company's current products include: high-efficiency air cooler series, evaporative condenser series, screw compressor units, piston compressor units, integrated refrigeration units, and other non-standard customized refrigeration equipment. Our products are widely used in many fields, such as food cold chain, pharmaceutical storage, chemical industrial cooling, logistics and warehousing, commercial refrigeration, and agricultural preservation.

  • Air Cooler Series

    •The fan features a lightweight and modular structure, ensuring high compatibility with various cold storage layouts and simplifying on-site installation.

    •It is available in high, medium, and low temperature resistance models, capable of adapting to ambient temperatures ranging from -45°C to 40°C, suitable for diverse operational requirements.

    •Equipped with energy-efficient direct-drive or belt-drive fans from well-known brands, it offers strong airflow, stable performance, low noise, and long-term durability.

    •All core components, including motors, fan blades, and brackets, are sourced from certified suppliers, guaranteeing system reliability and extended service life.

    •The low-temperature model integrates an intelligent defrost control system, effectively reducing frost accumulation and maintaining continuous high efficiency.

    View More
    Air Cooler Series

  • Air-Cooled Condenser Series

    •The condenser is designed with a compact and corrosion-resistant structure, suitable for outdoor installation while saving space and reducing maintenance frequency.

    •It covers multiple series for different climate conditions, capable of operating stably in ambient temperatures ranging from -30°C to 50°C.

    •Utilizes high-efficiency copper-aluminum finned tubes and low-noise axial fans from leading brands, ensuring excellent heat dissipation, energy efficiency, and quiet operation.

    •Key components such as fans, motors, and electrical controls are all selected from reputable domestic and international brands, enhancing overall operational stability.

    •The series incorporates an intelligent fan speed regulation system, dynamically adjusting based on ambient temperature and pressure to optimize energy consumption.

    View More
    Air-Cooled Condenser Series

  • Screw/piston Unit Series

    • The unit features a compact and highly integrated structure, saving machine room space and facilitating installation and maintenance.

    • The unit includes high, medium, and low temperature series, adapting to a wide range of storage temperatures, and can meet the needs of refrigeration systems with evaporation temperatures of 10℃ to -40℃ or lower.

    • It adopts semi-hermetic screw compressors from well-known domestic and international brands, offering high efficiency, long service life, low vibration, and low noise.

    • The unit is fully equipped, with major refrigeration components and control elements all sourced from well-known domestic and international brands, ensuring high reliability.

    • The medium and low temperature units are equipped with an economizer, significantly improving system operating efficiency and reducing operating costs.

    View More
    Screw/piston Unit Series

  • Barrel-Pump Unit Series

    •The unit adopts an integrated and compact design, combining refrigerant pumps, reservoirs, and control systems into one, saving installation space and simplifying piping layouts.

    •It includes multiple models for different refrigerant types and flow requirements, capable of supporting medium and low-temperature systems with evaporation temperatures ranging from 10°C to -45°C.

    •The refrigerant pumps feature high-efficiency and low-NPSH (Net Positive Suction Head) designs from renowned brands, ensuring stable liquid supply, low energy consumption, and strong adaptability.

    •Core components such as pumps, liquid level controls, and valves are sourced from well-known domestic and international suppliers, guaranteeing system safety and durability.

    •The series is equipped with a dual-pump standby system and an intelligent liquid level control function, enhancing operational reliability and adapting to fluctuating loads.

    View More
    Barrel-Pump Unit Series
Zhejiang Lanxi Refrigeration Equipment Co., Ltd.
ABOUT US
Zhejiang Lanxi Refrigeration Equipment Co., Ltd.
As China Air Refrigeration Unit Manufacturers and Cold Room Refrigeration Equipment Factory, Lanxi specializes in efficient, green, and sustainable refrigeration solutions. Leveraging high-quality products and innovative technologies, we serve the food, pharmaceutical, chemical, and cold chain logistics sectors, creating energy-efficient and environmentally friendly systems for our customers and fostering mutually beneficial development for both industry and the environment.
Certificate of Honor
  • A Heat Dissipation Mechanism for Condensers
  • A Welding Apparatus for Processing Refrigeration Equipment
  • A Heat Dissipation Device for Refrigeration Equipment
  • A Noise-Reducing Refrigeration Unit
  • A Defrosting Device For Cold Storage Refrigeration Systems
News
Product Industry knowledge

Air Refrigeration Unit Safety and Protection Functions

Antifreeze Function

Air refrigeration units operate by circulating refrigerant through a series of components to transfer heat. In certain conditions, such as extremely low ambient temperatures, there is a risk of the evaporator or other components freezing. To prevent ice formation, many air refrigeration units are designed with an antifreeze function. This function monitors the temperature of the evaporator coil and the airflow within the system. When the temperature approaches a predefined threshold that may cause freezing, the unit adjusts the operation of the compressor or activates auxiliary heating to maintain safe operating conditions. By implementing antifreeze measures, the equipment can continue to operate efficiently even under low-temperature conditions commonly found in cold storage or pharmaceutical applications.

Overheat Protection

Overheating can occur in air refrigeration units due to extended operation, blocked airflow, or excessive ambient temperatures. Overheat protection is implemented to avoid damage to the compressor, motor, and other critical components. Temperature sensors are usually installed at key points in the system, such as the compressor discharge, condenser, and motor windings. When the detected temperature exceeds safe operating limits, the system automatically reduces compressor speed, cycles off, or triggers alarms to prevent further temperature rise. This function helps maintain equipment reliability and ensures that industrial processes, such as food processing or chemical cooling, are not disrupted by sudden equipment failure.

Overload Protection

Overload protection addresses the risk of electrical or mechanical stress on the air refrigeration unit. Compressors, motors, and fans can experience excessive current draw due to abnormal load conditions, such as sudden pressure increases, refrigerant imbalance, or mechanical obstructions. Overload protection devices, such as thermal relays or electronic current monitors, continuously measure the load and interrupt power if necessary to prevent damage. This function also reduces the likelihood of fire hazards and contributes to safer operation in environments where continuous cooling is critical, such as cold chain logistics and pharmaceutical storage.

Comparison of Protection Functions

Air refrigeration units integrate multiple protective features to maintain safe operation. The following table summarizes typical characteristics of antifreeze, overheat, and overload protection functions:

Protection Function Purpose Typical Monitoring Method Action When Triggered
Antifreeze Prevent evaporator and coil freezing Temperature sensors on evaporator and airflow detectors Adjust compressor operation or activate auxiliary heating
Overheat Protection Prevent excessive temperature in compressor and components Temperature sensors at compressor, condenser, and motor Reduce compressor speed, cycle off, or trigger alarm
Overload Protection Prevent electrical and mechanical stress on system Current monitoring, thermal relays, and pressure sensors Interrupt power supply or shut down equipment

Integration and Customization

Modern air refrigeration units from manufacturers like Zhejiang Lanxi Refrigeration Equipment Co., Ltd. often integrate these protection functions within the control system. Depending on customer requirements, the system can be customized for specific operational thresholds, alarm settings, and control strategies. For instance, units used in pharmaceutical cold storage may have stricter antifreeze and overheat limits compared to standard food processing units. Similarly, overload protection can be configured to accommodate different compressor capacities or voltage supply conditions. This flexibility ensures that the air refrigeration unit can be safely applied across various industrial environments while maintaining reliable performance.

FAQ

Q: How can an air refrigeration unit be customized for specific industrial applications?

A: Zhejiang Lanxi Refrigeration Equipment Co., Ltd. provides tailored solutions based on customer requirements. Customization can include selecting the appropriate unit type, adjusting cooling capacity, integrating control systems, and designing complete project layouts to suit industries such as food processing, pharmaceuticals, or cold chain logistics.

Q: What factors influence the efficiency of an air refrigeration unit in a cold chain environment?

A: Efficiency depends on proper sizing of the unit, refrigerant selection, airflow distribution, ambient temperature, and load characteristics. Regular maintenance and monitoring of components like compressors, condensers, and fans also play an important role in maintaining consistent cooling performance.

Q: How does the company ensure the reliability of air refrigeration units in demanding environments?

A: Reliability is achieved through rigorous design and testing, using durable materials and components, and incorporating protective functions such as antifreeze, overheat, and overload protection. The units are engineered to handle continuous operation under variable loads and temperatures.

Q: Can air refrigeration units be integrated into existing cooling or freezing systems?

A: Yes, units can be designed to interface with existing infrastructure. Zhejiang Lanxi Refrigeration Equipment Co., Ltd. offers system integration services, including solution design, piping layout, and control synchronization, ensuring smooth operation with pre-existing equipment.

Q: What maintenance practices are recommended for air refrigeration units in industrial applications?

A: Recommended practices include regular inspection of compressors, condensers, evaporators, and fans, monitoring refrigerant levels, cleaning heat exchange surfaces, checking electrical connections, and verifying the functionality of protective devices. Proper maintenance ensures long-term stability and energy efficiency.

Q: How do protective features like antifreeze or overload protection contribute to operational safety?

A: Protective features prevent equipment damage caused by extreme temperatures, ice formation, or electrical/motor overload. By automatically adjusting operation or triggering alerts, these functions reduce the risk of system failure and maintain consistent cooling performance in sensitive applications.

Q: Are there options for remote monitoring or smart control of air refrigeration units?

A: Units can be equipped with control systems that allow remote monitoring of temperature, pressure, and operational status. Smart control options enable real-time alerts, performance optimization, and integration with building management or industrial automation systems, supporting proactive maintenance and operational efficiency.

X Facebook
Product News