This section provides an overview for dc axial fans as well as their applications and principles. Also, please take a look at the list of 10 dc axial fan manufacturers and their company rankings.
Table of Contents
A DC axial fan is a device used to control the temperature inside a device for the purpose of discharging heat generated inside a device to the outside. Conversely, for the purpose of supplying air to the inside from environmental heat outside the device.
In general, if the heat treatment of electronic components that generate heat by operating or driving equipment is left unattended, the electronic components inside the equipment may fail or be damaged in the worst-case scenario. A DC axial fan using a DC power supply is used to achieve a cooling effect inside the equipment by linearly supplying and exhausting the heat generated inside the equipment.
DC axial fans using DC power supplies are used to cool electronic components that generate heat by operating or driving equipment, because if the heat treatment of such components is left unattended, the temperature inside the equipment will rise, and in the worst case, the electronic components inside the equipment may break down or be damaged.
DC axial fans are mainly used to cool electronic components such as capacitors and ICs in equipment, such as notebook PCs, desktop PCs, control panels, and measuring instruments to ensure stable long-term use of the equipment.
The general structure of DC axial fans consists of a bladed plastic cooling fan attached to a brushless motor driven by a DC power supply in the center of the DC axial fans to cool the inside of the equipment.
The most important factor in fan performance is the required airflow relative to the amount of heat generated by the cooling target. To accommodate cooling by fans in a variety of environments, fans can be operated in parallel or in series, or large or double-reversing fans can be used to achieve the required airflow.
Furthermore, in recent years, fans with a PWM control function (pulse width modulation), which are DC axial fans used in notebook and desktop PCs, are equipped with a function to control the fan rotation speed externally. Therefore, it is possible to use a temperature sensor to control the temperature of the equipment to be cooled and also to control the rotation speed of the DC axial fans precisely in accordance with temperature changes.
On the other hand, the use of a fan can lead to failure or damage of electronic components due to dust or other foreign matter continuously flowing into the equipment to be cooled for a long period. In this case, a filter can be installed on the intake side in front of the fan to prevent dust or foreign matter from flowing into the equipment.
Axial fans are fans that use a fan to send air in an axial direction. They are the most efficient of all turbofans and are widely used for cooling applications for heating elements. Relatively little increase or decrease in airflow due to resistive objects is a characteristic of axial fans. In addition to axial fans, there are centrifugal fans and oblique flow fans with different airflow directions. Centrifugal fans are fans that generate airflow orthogonally to axial fans, and airflow is generated in the centrifugal direction. Also, a diagonal flow fan is a fan between an axial flow fan and a centrifugal fan. The shape of the blades causes air to be sucked in from the axial direction and pressure to be applied in the diagonal direction of the shaft, changing the exhaust direction and blowing the air. It is characterized by its small size and low weight.
A typical axial fan is a propeller fan. An airfoil-shaped propeller is placed inside a casing and rotated to generate airflow in the direction of the axis of rotation. Since the airflow is in the direction of the axis of rotation, it has a compact structure. A typical centrifugal fan is a blower. The centrifugal force of the forward-facing blades arranged in a cylindrical shape creates an air flow in a direction almost perpendicular to the axis of rotation.
The characteristics of the airflow and static pressure of axial fans have a rightward sloping characteristic, where the static pressure decreases as the airflow increases. Also, as the airflow rate increases, there is a region where the slope changes significantly, which is called the swirling stall region. The power consumption and sound pressure level also change around this region. When an axial fan is used, the operating range is from the swirl stall area to the maximum airflow, allowing the fan to be used within a relatively low range of power consumption and sound pressure level.
In contrast, the relationship between air volume and static pressure of a blower is that air flows along the inside of the case, which allows for higher static pressure than an axial flow fan of equivalent size, but at the same time, air volume tends to be lower. In addition, the fan does not have the swirl stall area of axial fans, and the static pressure decreases as the airflow rate increases. Power consumption increases monotonically with increasing airflow and is highest at the maximum airflow. The sound pressure level of the blower tends to be quietest in the middle of the maximum airflow range. Since blowers do not have a swirling stall region, they can generally be used in a wide range of applications. Also, since the sound pressure level is quietest in the middle of the maximum airflow range, the blower should be operated in this range if low noise is a concern.
*Including some distributors, etc.
Sort by Features
Sort by Area
Pelonis Technologies, Inc. was founded in the 1990s in Exton, Pennsylvania. Pelonis technologies is a manufacturer and distributor of air movement technologies and specialty heating products for commercial and industrial use. Pelonis Technologies is ISO 9000 and ISO 14000 certified. Pelonis Technologies has 3 main standard product segments in cooling, heating, and motors & motion control. Cooling products include fans, blowers, micro cooling, and automotive fans & blowers. Heating products include PTC heaters, temperature controllers, and immersion heaters. Motors & motion control include micro, planetary, AC, and medical micro motors. Custom solutions include AC and DC fans and blowers.
Nidec Corporation was founded in Kyoto, Japan in 1973 and is a conglomerate with over 200 subsidiaries. Primary products are hard-disk drive motors and automotive parts, and specializes motors ranging from miniature to gigantic. Nidec’s products are used in robotics, automotive, home appliances, agriculturel equipments well as molding, cutting, and machining equipment and sensors.
Activa Inc, located in Kaoshiung, Taiwan, is a leader of research and development of cooling fans and motors. Examples include cooling fans used in personal computers, cross flow fans, duct fans, DC and stepper motors, Sirocco blowers, ceiling fans, and fan accessories. Additional products include water pumps, air compressors, and AC heating fans.
Number of Employees
Newly Established Company
Company with a History
This is the version of our website addressed to speakers of English in Canada. If you are a resident of another country, please select the appropriate version of Metoree for your country in the drop-down menu.