All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
(5080 products available)
There are many types of propeller fans, which are used in different industries and applications.
Axial fan
An axial fan is a type of machine that sends air along the same axis as the wheel. Axial fans may have rotors of different shapes and amounts of blades. A common example is the propeller fan. An axial fan's airflow rate is larger, and the pressure increase is lower compared with centrifugal fans.
Centrifugal fans
The centrifugal fan (also known as a radial blower) is a device that draws in air parallel to the axis of rotation and expels it perpendicularly. The working principle of a centrifugal fan is to convert the torque of the motor into kinetic energy, which then rotates the blade wheel. This generates centrifugal force, which expels the air. Centrifugal fans can be divided into three categories: single-inlet backward-blade centrifugal fans, single-inlet forward-blade centrifugal fans, and double-blade centrifugal fans; double-blade centrifugal fans are also called semi-forward-blade centrifugal fans.
Crossflow fans
A crossflow fan (also known as a radial blower) is a device that draws in air parallel to the axis of rotation and expels it perpendicularly. The working principle of a centrifugal fan is to convert the torque of the motor into kinetic energy, which then rotates the blade wheel. This generates centrifugal force, which expels the air. Crossflow fans can be divided into three categories: single-inlet backward-blade centrifugal fans, single-inlet forward-blade centrifugal fans, and double-blade centrifugal fans; double-blade centrifugal fans are also called semi-forward-blade centrifugal fans.
EC fans
EC fans are direct current fans driven by electronic commutation. Based on the brushless DC motor technology, it integrates the motor, driver, and fan in one unit. The Electronic Commuted (EC) motor technology offers a number of significant advantages, including higher efficiency, lower power consumption, a wide voltage range, and precise speed control.
Blower fan
A blower fan is a small electric fan that can blow a large amount of air at high velocity. It is commonly used to cool down hot electronic components. Mini blower fans are commonly used in consumer electronics such as mobile phones, game consoles, and tight spaces.
Propeller fan specifications may vary depending on the application. Here are the typical specifications of propeller fans.
Sizes
Mechanical dimensions are displayed in diameter for circular fans or length for square fans. Fan sizes generally range from 200mm to 600mm for ceiling fans and 350mm to 1350mm for wall/industrial fans/big power fans. Bigger propeller fans usually provide high airflow.
Airflow
The amount of air a propeller fan moves is known as airflow. Fans with a greater diameter typically move more air. Airflow is typically measured in cubic feet per minute (CFM) or liters per second.
Speed
Speed is the number of rotations the fan makes in a minute, known as revolutions per minute (RPM). Larger fan blades usually move at a greater speed.
Power consumption
The power consumption of a propeller fan is indicated in watts. Typically, greater fan airflow and speed results in higher power consumption.
Noise level
The noise level of the propeller fan is measured in decibels (dB). Power, speed, and airflow generally affect the noise of a propeller fan. The faster it rotates, the more noise it generates.
Blade design
Propeller fans come with various blade designs, such as straight or curved blades. Each design has a unique performance characteristic.
Blade material
Propeller fan blades are manufactured from several materials, including plastic, fiberglass, and metal. Each material has its durability and performance advantages.
Regular cleaning of the fan blades is the primary maintenance of a propeller fan. The procedure begins by disconnecting the electricity supply and then unscrewing the fixed parts of the blades to enable cleaning both sides of the blades thoroughly. After cleaning, perhaps with a mild detergent and cloth, ensure the blades are completely dry before fixing them back. Another common maintenance is lubricating the bearings if applicable. However, some manufacturers may advise against lubrication due to modern sealed bearings. Always follow the manufacturer instructions on maintenance and cleaning procedures.
Propeller fans are widely used in various industries and fields because they are generally simple and cost-effective methods of moving air.
Cooling and heat dissipation
Propeller fans are widely used in electronic devices such as computers, power supplies, and game consoles. They are used to provide adequate heat dissipation and prevent overheating of the components. Besides that, they are also used in industries like welding to cool the weld joints and prevent cracks or in the manufacturing of semiconductors to cool the silicon wafers.
HVAC systems
Propeller fans serve as exhaust fans or fresh air intake in ventilation systems. They are responsible for the renewal of air in the room and the establishment of a comfortable living environment. In addition, the fans also allow the reduction of indoor contamination. In cooling and refrigeration systems, for instance, they are used in condensers and evaporators to facilitate the heat exchange processes.
Industrial manufacturing
In factories and workshops, propeller fans are used for ventilation and dust removal to improve the working environment and reduce occupational hazards. In the paper-making industry, for example, propeller fans are often used to dry paper. They promote the evaporation of moisture and increase the production rate.
Transportation
In the automotive industry, propeller fans are used in car radiators and air conditioning systems. They help maintain proper operating temperatures by regulating the vehicle's interior temperature. In the aviation industry, propeller fans are used in some UAVs as the main method of lifting and accelerating. Besides that, in the shipping industry, they are employed at the ship's hull and cabin. Their role is to cool the engine and facilitate the movement of the vessel through the water.
Entertainment and fashion
In stadiums and sports facilities, propeller fans are often used for ventilation to improve the spectators' comfort. In the open-air space, for instance, the temperature can skyrocket. In stores and boutiques, ceiling propeller fans are used for decoration and marketing purposes. They represent the brand's style.
Greenhouse and agricultural production
In greenhouses, they are used to provide adequate ventilation, which is beneficial for both plant growth and disease control. In poultry and livestock production, propeller fans are employed to regulate the temperature and humidity inside the barn, thus preventing the animals from thermal stress and ensuring their welfare.
When buying industrial propeller fans, one should keep the end users and installation requirements in mind. Choose a variety of fans to cater to different use cases and environments. Select models with varying airflow and pressure ratings. This will enable clients to pick a fan best suited for their needs. Consider fans that have different noise levels. Clients with noise restrictions are more likely to purchase fans that operate quietly. Propeller fans come in different sizes and, hence, move different volumes of air. Buy fans in sizes that match the intended installation places. Involve the experts for guidance on determining fan size from the manufacturer's description.
Clients would like to know how durable the propeller fan is before purchasing. Therefore, stock up on fans made of durable materials such as corrosion-resistant steel. Consider those that come with protective coatings. Select fans with different power requirements to cater to a broad consumer base. Some clientele will demand for the energy-saving type, while others will settle for the standard. Choose fans that support multiple speeds to give clients the option to adjust the speed as the temperature changes. Import fans from reputable manufacturers with a proven track record. A reputable manufacturer will make a quality product and offer excellent customer support.
When buying for resale, try out some display models to gauge performance and get firsthand experience. This will improve customer service. Additionally, consult industry experts for guidance on making the right selection. Check the propeller fan’s certification to ensure it meets international standards. The certification provides safety assurance for both the buyer and end user. When buying large volumes, negotiate for better rates. Some suppliers offer discounts on bulk purchases. Finally, look for suppliers with fast shipping services to prevent incurring extra storage costs.
Q1: What is the difference between a propeller fan and another type of fan?
A1: The main difference is how they generate airflow. While propeller fans use rotating blades to push air, other types such as jet fans and centrifugal fans employ different methods. For instance, a centrifugal fan uses a wheel to draw in air and then push it away in a perpendicular direction.
Q2: What factors affect the performance of propeller fans?
A2: The fan's design, the material used for the blades, the pitch of the blades, and the motor's power are some factors that can have an impact on its performance.
Q3: Are propeller fans noisy?
A3: Generally, the more the air they push, the louder they become. However, manufacturers have sought to design quiet propeller fans. The fan's noise level will also depend on its installation, operating voltage, bearing system, and the object's proximity to it.
