How to Select Cooling Fans for Refrigerated Display Cases? Why Are More Systems Switching to IP68 DC Splash Proof Fans? | Jentech Cooling Fan

In recent years, the refrigeration equipment industry has been undergoing a noticeable shift in cooling architecture. Traditional AC cooling fans used in refrigerated display cases, freezer showcases, beverage coolers, supermarket refrigeration cabinets, and commercial cold-chain equipment are gradually being replaced by more efficient and reliable IP68 DC Splash Proof Fans.

Why is this transition happening?

The answer lies in the changing requirements of modern refrigerated showcase systems:

• Higher energy-efficiency standards

• Long-term continuous operation

• Condensation and water resistance

• Lower maintenance costs

• Low-noise operation

• Intelligent speed control

• Compact structural design

For refrigeration equipment manufacturers, choosing the right cooling fan is no longer just about airflow. It has become a comprehensive engineering decision involving reliability, waterproof performance, power consumption, lifespan, and controllability.

Why Refrigerated Display Cases Are Challenging for Cooling Fans

Unlike ordinary indoor electronics, refrigerated showcases operate in harsh environments characterized by:

1. High Humidity and Condensation

Inside refrigerated cabinets, evaporators and cooling systems continuously generate condensation.

During maintenance or defrost cycles, melted frost may produce water droplets that directly contact the cooling fan.

This creates several risks:

• Moisture entering motor windings

• PCB corrosion

• Bearing degradation

• Electrical short circuits

• Reduced insulation reliability

Traditional AC fans often struggle in these conditions over long operating periods.

2. Continuous 24/7 Operation

Commercial refrigeration systems usually operate continuously throughout the year.

Cooling fans are expected to deliver:

• Stable airflow

• Low vibration

• Long operational life

• Low failure rates

Frequent fan replacement increases:

• Maintenance labor

• Downtime costs

• Refrigeration instability

As a result, long-life DC cooling fans are becoming increasingly preferred.

3. Increasing Energy-Saving Requirements

Supermarkets, convenience stores, and beverage chains now place greater emphasis on reducing total energy consumption.

Compared with traditional AC fans, DC fans typically provide:

• Lower power consumption

• Higher efficiency

• Better airflow-to-power ratio

• PWM intelligent speed control capability

For large-scale refrigerated display systems, even small power reductions per fan can significantly lower annual operating costs.

Why IP68 DC Splash Proof Fans Are Becoming Mainstream

Waterproof Protection Improves Reliability

Modern Splash Proof Fans use sealed motor structures and resin-coated electronic components to improve resistance against:

• Water droplets

• Condensation

• Humidity

• Dust intrusion

Fans with IP68 protection rating can operate more reliably in refrigeration environments where moisture exposure is unavoidable.

For refrigerated showcases, this significantly improves:

• Operational stability

• Maintenance intervals

• Equipment lifespan

• Safety performance

Why DC Fans Are Replacing Traditional AC Fans

Lower Power Consumption

One major reason refrigeration manufacturers are migrating to DC fans is energy efficiency.

Compared with conventional AC fans:

• DC fans consume less power

• Motor efficiency is higher

• Heat generation is reduced

• Intelligent control becomes easier

This aligns well with global low-carbon and energy-saving trends.

PWM Speed Control for Smarter Cooling

Modern refrigeration systems increasingly require dynamic airflow management.

For example:

• High load → increase airflow

• Night mode → reduce fan speed

• Partial cooling zones → variable airflow adjustment

DC fans supporting PWM control can automatically adjust speed according to system requirements.

Benefits include:

• Lower noise

• Reduced energy consumption

• Extended fan life

• More stable cabinet temperature

This is difficult to achieve using traditional fixed-speed AC fans.

Why IP68 Is Especially Important for Refrigerated Showcases

Many engineers initially assume that IP54 or IP55 protection is sufficient.

However, refrigerated display systems often experience:

• Condensation cycles

• Defrost moisture

• Water vapor accumulation

• Cleaning operations

• Long-term humidity exposure

Therefore, higher waterproof capability becomes increasingly important.

Advantages of IP68 Splash Proof Fans

• Improved resistance to water ingress

• Better reliability under condensation conditions

• Reduced corrosion risks

• Enhanced operational stability

• Longer service life in cold-chain environments

This is particularly important for:

• Supermarket refrigeration systems

• Beverage display coolers

• Medical refrigeration cabinets

• Commercial freezer showcases

• Fresh-food refrigerated display equipment

Typical Cooling Fan Requirements for Refrigerated Display Cases

Common Specifications

Recommended Cooling Fan Types

Axial Splash Proof Fans

Suitable for:

• General ventilation

• Condenser airflow

• Cabinet circulation cooling

Advantages:

• Large airflow

• Lower noise

• High energy efficiency

Splash Proof Centrifugal Fans

Suitable for:

• Compact airflow channels

• High airflow resistance systems

• Thin refrigeration structures

Advantages:

• Higher static pressure

• Better duct adaptability

• Suitable for restricted installation spaces

Splash Proof Blowers

Suitable for:

• Directed airflow applications

• Air duct systems

• Precision airflow control

Advantages:

• Concentrated airflow

• Strong pressure capability

• Effective cooling in narrow pathways

Why More Manufacturers Are Choosing Customized Cooling Fan Solutions

Modern refrigeration equipment increasingly requires customized fan configurations.

Typical customization options include:

• IP68 waterproof customization

• PWM speed control

• FG speed feedback signal

• RD alarm signal

• Customized cable length

• Waterproof connectors

• Terminal processing

• Low-noise optimization

• High static pressure design

Customized solutions help improve:

• System integration efficiency

• Installation convenience

• Environmental resistance

• Overall reliability

Jentech Cooling Fan Solutions for Refrigerated Display Equipment

As a professional cooling fan manufacturer and thermal solution provider, Shenzhen Jentech Electronics provides comprehensive cooling solutions for refrigeration and cold-chain industries.

Jentech supports:

• IP68 Splash Proof Fan customization

• DC axial fan solutions

• Splash Proof Centrifugal Fan solutions

• PWM intelligent speed control

• FG/RD signal customization

• Low-noise cooling fan design

• Long-life industrial cooling fans

• Waterproof connector solutions

• Customized cable and terminal processing

Products are widely used in:

• Refrigerated display cases

• Commercial freezer showcases

• Beverage refrigeration systems

• Medical refrigeration equipment

• Cold-chain cabinets

• Smart retail refrigeration systems

Conclusion

The cooling requirements of modern refrigerated display systems are evolving rapidly.

Manufacturers are no longer focusing solely on airflow performance. Instead, they now prioritize:

• Waterproof reliability

• Energy efficiency

• Long operational life

• Intelligent airflow control

• Low-noise performance

• Maintenance reduction

This is why more refrigeration systems are transitioning from traditional AC fans to IP68 DC Splash Proof Fans.

For refrigeration equipment operating in humid, condensation-prone, and long-duration environments, selecting the right cooling fan has become a critical engineering decision directly affecting system stability, energy consumption, and lifecycle cost.

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