Features of Aosun Freezer Air Curtain
- Made from premium quality materials that can withstand freezing temperatures
- Equipped with high-efficiency fans that can project air up to 7 meters
- By installing freezer air curtain you can have as much 80% energy savings
- Aosun Freezer air curtain acts as an effective invisible air barrier without the need to install plastic slats or roller doors.
- Our freezer air curtain also conforms to food-processing standards such as AMCA, ANSI/NSF and ETL
Leading Freezer Air Curtain Manufacturer in China
Tired of frequent defrosting the door openings and evaporators on your cold storage facilities? Aosun offers you effective solutions with our Freezer Air Curtain. Installing Freezer air curtains to door openings delivers huge advantages. Without a freezer air curtain, a huge amount of cold air is lost when cold storage doors are opened. This will result in mist and fog formation because of the thermal shock happening when outside air is mixed with colder air from freezer rooms. Eventually snow and solid ice can block the evaporators causing it to lose capacity resulting in higher energy consumption and reduced cooling. Aosun freezer air curtain prevents all of that from happening.
The powerful blow of air from the freezer air curtain acts as an invisible barrier preventing cold air from escaping through door openings and protecting stored goods. Because of this capability, you can achieve a stable temperature while cold storage doors are opened all the time to maximize mobility. The blown air reaches the flooring thus keeping the floor dry for safe and quick moving traffic in and out. Without the fog formation, clearer visibility helps in faster production. Aosun also offers freezer air curtains for refrigerated trucks, trailers and vans.
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Industrial use freezer air curtain with automatic motor, Alternation can be requested before producing.
Approximately 1800mm Air conditioning for industrial buildings, Freezer temperature volume.
Clears for clean ventilation and durable body for enclosed fridge.
Regular automatic machine air curtain, has low energy consumption and long lasting functionality.
Condition are all manufactured with high-quality materials, Durable body made out of aluminum
Air curtain with cold temperature control and regular maintenance keeps the moisture from building up.
Flow Cooling with temperature isolation control and switchable volume.
High-quality remote device for temperature control, Helps keep the warmth inside an enclosed kitchen refrigerator.
1. Why do Freezers Need Air Curtains?
For your freezers and food storage, maintaining a constant low temperature is crucial for preserving the food’s freshness. Traditionally, food is stored in a freezer compartment sealed by a door, creating an environment that seems to be a separate space. However, each time the door is opened, cold and warm air mix. And when warm, humid air enters, condensation forms on the door, potentially leading to frost buildup.
This increases the load on the refrigeration system, causes stored items to become damp, and rusting of the equipment. This is inconvenient for daily use and may even increase costs due to defrosting.
The addition of an air curtain can effectively mitigate this issue by isolating the air inside and outside the refrigerated cabinet. This prevents direct contact between cold and warm air, thereby eliminating the condensation or frost buildup. Even when the freezer door is open, it maintains a low temperature environment inside while allowing goods to be transported normally.
2. How Does an Air Curtain Work For Freezers?
The freezer air curtain operates based on aerodynamic principles. Our equipment draws in surrounding air and expels it downward at a specific angle through narrow, slit like vents. This creates a powerful vertical airflow that forms a dynamic gas barrier for your freezer.
This barrier effectively isolates air with excessive temperature differences between inside and outside, preventing cold and hot air convection that may cause condensation or fogging. It also reduces cold air loss by approximately 70%, maintaining a low-temperature environment.
As a leading manufacturer of freezer air curtains in China, Aosun ‘s air curtains feature high-efficiency fans capable of projecting air up to 7 meters. They can also be applied to refrigerated trucks, vans, and other vehicles to provide cooling solutions. If you are interested, we welcome you to consider us.
3. What are the Benefits of Using Air Curtains in Freezers?
3.1. Maintaining Indoor and Outdoor Relative Humidity
Adding an air curtain to your freezer also stabilizes the relative humidity levels between indoors and outdoors. By reducing the intrusion of external moisture, it can preserve the humidity within your refrigerated space and prevent the food from spoiling due to dampness, and extend its shelf life.
3.2. Energy Saving
As mentioned earlier, sudden airflow convergence between hot and cold air causes temperature spikes in cold storage, increasing the load on your refrigeration compressor. Air curtains not only prevent this convergence but also assist your compressor by reducing its workload. This shortens compressor runtime and operational strain, cutting energy consumption by approximately 30-50%.
Aosun’s air curtains can save you up to 80% in energy costs. Contact us today for a quote.
3.3. Clean and Hygienic
When freezer doors open, the air curtain stabilizes interior temperatures, creating an environment that is unfavorable for bacteria to grow. This air barrier can also block the dust, insects, and other contaminants from entering your freezers. This also ensures a clean environment that meets sanitation standards.
4. Key Parameters to Consider When Selecting an Air Curtain for Freezers
4.1. Wind Speed
Wind speed is one of the key parameters for you to evaluate the air curtain performance. If the wind speed is insufficient, your air curtain will fail to form an effective barrier. It’s like developing gaps in a door curtain, allowing external humid air to enter the freezer compartment easily and compromising low-temperature efficiency.
Generally, the air curtain’s wind speed should range between 13-18 m/s. This applies to freezers that need the temperature to be maintained between -25°C and -18°C. If the internal temperature needs to be lower, a higher wind speed is required to maintain the barrier’s effectiveness.
4.2. Airflow
Airflow refers to the total volume of air that an air curtain can circulate per unit of time, and can be measured in cubic meters per hour (m³/h). Typically, manufacturers will list this critical parameter in the product manual. You should also inquire about it during purchase, as it is essential information to consider when selecting a curtain unit.
Common airflow rates for cold storage air curtains range from 1500 to 4000 m³/h. You can select based on your specific application. Naturally, a higher airflow rate indicates superior performance for the air curtain.
4.3. Noise
For standard commercial environments, operating noise levels of 55 decibels or below are considered within the normal range and typically do not cause excessive disturbance. After all, excessive noise can compromise the customer experience and ultimately impact business operations. While in locations with stricter noise requirements, air curtains with operating noise levels below 45 decibels can be selected by you to create a quieter environment.
Of course, specific noise parameters can also be obtained by consulting the manufacturer, as this is equally essential information you need to understand.
4.4. Equipment Dimensions
You can select the air curtain size based on the dimensions of the cold storage door opening where it will be installed. If the cold storage door is too small, choosing an oversized air curtain is wasteful.
For instance, a 1.5-meter air curtain is suitable for smaller cold storage units, while a 1.8-meter model is better suited for large cold chain warehouses or central kitchen passageways. This ensures effective low-temperature maintenance and can save energy during extended use.
5. How to Install an Air Curtain for a Freezer?
5.1. Inspection
First, you should ensure a sufficient space is reserved at the freezer entrance for installing the air curtain, and verify that the power source location allows for adequate wiring connections. Then you need to inspect the air curtain accessories to confirm they are complete and undamaged. After completing these steps, you may proceed with the installation.
5.2. Installation
During the installation, you need to use a screwdriver to remove the mounting plate from the back of the air curtain first, and securely fasten this plate to the desired installation location by using expansion bolts.
Then, you should ensure that the mounting plate is fitting tightly against the wall surface, as the minimized gaps prevent operational vibrations from contacting the wall and generating noises. Once the plate is firmly installed, you can suspend the air curtain onto it and secure it with screws.
5.3. Test Run
After securing the installation, you must power on the unit for a test run to make sure that the air curtain itself functions properly and produces no unusual noises. If any issues arise, what you need to do is to disconnect the power supply immediately and solve the problem.
Yes, our freezer air curtains comply with multiple food-grade processing standards, including AMCA, ANSI/NSF, and ETL, ensuring they do not compromise the safety of the stored food.
When installing an air curtain, you must ensure that the unit is perfectly level and directly facing the freezer door. As any tilt will cause the airflow to deviate, significantly reducing its effectiveness and rendering the installation pointless.
As mentioned earlier, you need to consider essential parameters such as dimensions, airflow volume, and air velocity when choosing an air curtain. Most importantly, you must find an air curtain with food-grade certification to ensure safety.
However, the most effective approach remains to work with a professional manufacturer that has large-scale factories and years of production experience.
Aosun is China’s leading professional air curtain manufacturer and can be your trustworthy partner.
The two types of air curtains differ in their applicable environments and functional focuses. Freezer air curtains can operate stably for extended periods in low-temperature environments, while ordinary air curtains are generally suitable for room temperature. Freezer air curtains prioritize preventing frost buildup on the impeller and body, therefore they typically use low-temperature resistant, corrosion-resistant, and frost-resistant materials, while ordinary air curtains focus more on oil, water, and dust resistance.
Freezer air curtains are primarily suitable for use in low-temperature environments. For example, they are commonly installed at the entrance of cold storage rooms to effectively prevent cold air loss, saving energy and maintaining a stable low-temperature environment. In food processing plants, they can also isolate different temperature zones to prevent cross-contamination. In addition, they may be used in some low-temperature laboratories to ensure the stability of the experimental environment temperature and prevent temperature instability from affecting experimental results.
Freezer air curtains can reduce freezer energy consumption. They create a high-speed air barrier at the freezer door, reducing cold air leakage. The air curtain helps maintain a stable freezer temperature, reducing the need for frequent operation of the refrigeration equipment and improving cooling efficiency. Commercial supermarkets frequently use freezer compartment air curtains to reduce the operating time and energy consumption of refrigeration equipment.
An air curtain in the freezer compartment prevents outside air from entering the freezer, thus reducing condensation and frost buildup. The reduction of frost can reduce the frequency of defrosting. At the same time, the freezer air curtain can also maintains a stable air flow, improving the efficiency of the refrigeration system and saving energy.
