Vertical air curtain system for cold chain logistics
Robust Construction and Durability
The system features a heavy-duty industrial-grade build to withstand the demanding conditions of cold chain logistics operations. The main body is fabricated from high-quality stainless steel or thickened galvanized steel, with anti-corrosion, anti-rust, and anti-condensation surface treatments, providing excellent resistance to moisture, salt spray, and chemical corrosion common in cold storage environments. Internal components are protected by IP55 or higher waterproof and dustproof enclosures, ensuring stable operation in dusty and humid settings. The modular design simplifies installation and maintenance, with easily accessible filters and fan units that require only regular cleaning and basic inspections, minimizing downtime and maintenance costs. The reinforced structure also resists vibrations and impacts from frequent forklift and personnel traffic, ensuring long-term reliability and a prolonged service life.
Superior Thermal Isolation and Energy Efficiency
The vertical air curtain system is engineered with high-performance centrifugal fans and precision-engineered air ducts, delivering a continuous, dense, and uniform vertical airflow barrier across cold storage doorways. This robust air wall effectively blocks the infiltration of warm, humid outdoor air and prevents the escape of cold air from the cold chain storage area, drastically reducing thermal exchange between indoor and outdoor environments. It achieves an exceptional cold air retention rate, cutting down the energy consumption of refrigeration systems by up to 80% compared to unprotected doorways. The optimized airflow design, with an airspeed range of 8–21 m/s and a precise air volume matching door width (1,000–3,000 m³/h per meter of door width), ensures no gaps or turbulence in the air barrier, maintaining stable internal temperatures and minimizing the load on cooling equipment. This not only lowers long-term operational energy costs but also extends the service life of core refrigeration components by reducing frequent start-stop cycles caused by temperature fluctuations.
Low-Temperature Adaptability and Anti-Frost Performance
Tailored for the harsh low-temperature and high-humidity environments of cold chain logistics, all core components of the system undergo specialized low-temperature treatment. The motors are sealed, explosion-proof, and low-temperature resistant, equipped with low-temperature lubricants to eliminate jamming and operational failures in environments as cold as -30°C. The fan impellers and air ducts are constructed from anti-frost materials, and advanced models integrate duct heating systems to prevent frost and ice buildup inside the ducts from condensation of warm, moist air. This design guarantees uninterrupted airflow and consistent sealing performance, even during 24/7 continuous operation in freezing cold storage facilities. The system effectively eliminates issues like fogging, ice formation, and slippery floors at doorways, significantly enhancing workplace safety and reducing accident risks.
· PrFood processing workshops
· Cold stores and freezer rooms
· Cold chain logistics centres and distribution warehouses
· Pharmaceutical factories and cleanrooms
· Biological laboratories and sample repositories
· Flower preservation chambers
· Low-temperature storage for
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Product Name |
Vertical air curtain system for cold chain logistics |
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| Shell Material |
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| Suitable Door Height |
2.0m - 2.5m |
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| Available Widths |
900mm / 1200mm / 1500mm (Customizable) |
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| Motor Type | Pure Copper Core, Low Temp Lubrication | ||
| Voltage/Frequency | 220V / 50Hz (Single Phase) | ||
| Power Input | 160W - 230W (Depending on width) | ||
| Air Velocity |
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| Air Volume |
1200 - 1900 m³/h |
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| Noise Level |
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| IP Rating |
IP44 |
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| Control Method |
Mechanical Button / Optional Door Switch |
Frequently Asked Questions (FAQ)
1. What is the main purpose of a cold storage air curtain?
Its primary function is to create an invisible air barrier that prevents cold air from escaping and warm air from entering when the cold room door is open. This maintains the internal temperature and reduces the load on your cooling compressor.
2. Do air curtains actually cool the room?
No. An air curtain is not an air conditioner. It does not generate cold air. Instead, it acts as a "seal" or a "door" made of air to keep the existing cold air inside the room.
3. Can an air curtain replace a physical door?
No. Air curtains are designed to work when the physical door is open (during loading/unloading). When the facility is closed for the night, the physical insulated door should still be closed for maximum security and insulation.
4. Why is an air curtain better than PVC strip curtains?
Air curtains offer a touchless solution, meaning no physical barrier touches your food or goods (better hygiene). They also don't scratch or fog up like PVC strips (better safety/visibility) and don't require frequent replacement due to wear and tear.
5. How much energy can I save?
While results vary based on usage and temperature differences, a properly installed air curtain can retain 80-90% of the conditioned air, potentially reducing your energy costs by 30-50% compared to an unprotected open door.
6. Does it prevent insects and dust?
Yes. The high-velocity airflow (usually above 15 m/s for industrial units) is strong enough to physically repel flying insects (flies, mosquitoes) and airborne dust, keeping your cold storage hygienic.
7. Should I install the air curtain inside or outside the cold room?
For the best results, we recommend installing the unit on the "warm side" (outside the cold room/freezer), blowing air downwards. This prevents the motor from freezing and stops warm air before it even enters the doorway.
8. Can I install the air curtain vertically?
Yes. If you lack headroom above the door, you can install units vertically on the sides of the door. For very wide doors, we recommend installing vertical units on both sides to create a meeting airflow in the center.
9. What is the ideal installation height?
It depends on the model. Commercial units are usually effective up to 2.5 - 3.0 meters. Heavy-duty industrial units can seal doors up to 5.0 - 6.0 meters high. Always check the "Effective Discharge Distance" in the specs.
10. Do I need a door switch?
We highly recommend it. A mechanical or magnetic door switch turns the air curtain on only when the door opens and turns it off when the door closes. This saves electricity and extends the motor's lifespan.
11. My door is wider than the largest air curtain. What should I do?
You can modularly install multiple units side-by-side. For example, if your door is 2.4 meters wide, you can install two 1.2-meter units together to cover the full width.
12. Will the motor freeze if I install it inside a freezer?
Standard motors will freeze. If you must install it inside (on the cold side), you need to order our specialized Cold Room Motor, which features low-temperature grease (-40°C) and anti-freeze cabling.
13. What is the difference between Single Phase and 3-Phase?
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Single Phase (220V/50Hz): Used for smaller commercial units (cafes, restaurants, small walk-ins). Easier to wire.
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3-Phase (380V-415V): Required for large industrial units. It provides the power needed for high-velocity centrifugal fans to blow air down from 4+ meters.
14. Are these units waterproof?
Our Cold Storage series comes with IP54 protection or higher. This means the motor and electrical components are protected against splashing water and dust, which is essential for humid or wash-down environments.
15. What material is the casing made of?
For cold storage and food processing, we strictly recommend 304 Stainless Steel. It is rust-proof, easy to clean, and complies with food safety standards. Powder-coated steel is available for general warehousing.
16. How loud are these units?
Industrial air curtains move a lot of air, so they are louder than residential AC units. Expect noise levels between 55dB (small units) to 75dB (large industrial units). This is standard for warehouse environments.
17. Why is there mist or fog at the doorway?
This happens when warm, humid air meets cold air. If your air curtain is not powerful enough or angled incorrectly, the seal is broken, causing condensation (mist). Ensure your unit has high enough velocity to reach the floor.
18. Why is ice building up on the floor near the door?
This usually means the air curtain is either too weak (air not reaching the floor) or the vanes are angled inward, blowing warm air into the freezer which then condenses and freezes. Adjust the air vanes to blow slightly outward (away from the cold room).
19. How often should I maintain the air curtain?
Maintenance is low. We recommend:
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Monthly: Check the intake grille for dust/debris blockage.
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Quarterly: Wipe down the stainless steel shell.
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Yearly: Check the fan blades and motor mounting for tightness.
20. Can I adjust the wind speed?
Yes. Most of our models come with at least 2 speeds (High/Low). Use High speed during hot summers or heavy traffic, and Low speed during cooler months to save energy.
21. What happens if the air curtain is narrower than the door?
If the unit is narrower than the door, air will leak in through the gaps at the edges. This "leakage" significantly reduces efficiency. Always choose a unit equal to or wider than your door opening.
22. Does the product come with a warranty?
Yes, all our industrial cold storage air curtains come with a standard 1-Year Warranty on the motor and electrical components. Extended warranties are available for project orders.
