Shenzhen Cooling Technology Co., LTD.

Shenzhen Cooling Technology Co., LTD. Contact information, map and directions, contact form, opening hours, services, ratings, photos, videos and announcements from Shenzhen Cooling Technology Co., LTD., Electronics, 10 Building, Yinhai Industrial Zone, Yuanshan Street, Longgang District, Shenzhen.

A professional manufacturer which focuses on manufacturing and developing versatile DC & AC cooling axial fans, blowers, centrifugal fans, and accessories to provide the best thermal cooling solutions.

To be the Top 2 Cooling Fan factory
06/12/2023

To be the Top 2 Cooling Fan factory

05/07/2023

Understanding the Differences in Fan FG, RD, and PWM Functions

Introduction: Fans play a crucial role in many electronic devices, including computers, gaming consoles, and cooling systems. These fans are controlled using various signals, each with its unique purpose. In this post, we will explore the differences between Fan FG (Fan Speed Signal), RD (Rotation Detection Signal), and PWM (Pulse Width Modulation) signals, shedding light on their functionalities and applications.

1. FG (Frequency Generator) Function:
The Fan FG Function, also known as the Fan Speed Function, provides feedback on the rotational speed of a fan. It is typically a square wave signal with a frequency directly proportional to the fan's RPM (Revolutions Per Minute). The FG Function is useful for monitoring and controlling the fan speed, ensuring optimal cooling performance, and preventing overheating.
The FG signal can be connected to a tachometer or a fan controller, which interprets the frequency to determine the fan's rotational speed. This information can then be utilized to adjust the fan speed dynamically based on temperature or user-defined settings. By utilizing the FG Function, system components can be safeguarded from potential damage caused by excessive heat.

2. RD (Rotation Detection Function):
The RD Function, also referred to as the Rotation Detection Function, serves as a binary indicator that confirms whether the fan is operating or not. It is a square wave signal that switches between two voltage levels, typically indicating either the presence or absence of rotation. The RD Function is used as a safety feature to detect fan failure or disconnection.
When the fan is functioning correctly, the RD signal will oscillate, indicating rotation. However, if the fan stops spinning or malfunctions, the signal will remain at a steady state, indicating a fault. System controllers or monitoring circuits can use the RD Function to trigger alarms, halt operations, or initiate backup cooling mechanisms to prevent damage due to inadequate airflow.

3. PWM (Pulse Width Modulation) Function:
The PWM Function is widely employed for fan speed control. It is a digital signal that varies the duty cycle (the ratio of on-time to the total period) to regulate the fan's speed. The PWM Function is commonly used in conjunction with 4-pin fans, where the additional pin is dedicated to PWM control.
By adjusting the duty cycle of the PWM signal, the fan's power supply is effectively turned on and off rapidly, creating an average voltage that regulates the fan speed. This enables precise and efficient control over fan speeds, allowing for quieter operation during idle or low-temperature conditions and increased airflow when necessary.

Conclusion: Understanding the distinctions between Fan FG, RD, and PWM Functions is crucial for effective fan control and monitoring in various electronic devices. While the Fan FG Function provides feedback on rotational speed, the RD Function helps detect fan failures, and the PWM Function enables dynamic fan speed regulation. By harnessing the power of these functions, systems can maintain optimal temperatures, prolong the component lifespan, and ensure reliable operation.

26/05/2023

Difference between Airflow and Static Pressure of a cooling fan

Welcome to our cooling fan website, where we take pride in delivering exceptional airflow and static pressure to revolutionize your cooling experience. Our cutting-edge cooling fans are designed to provide superior performance and efficiency, ensuring optimal airflow and static pressure to keep your environment comfortable and well-ventilated.

1. Airflow is the measure of how much air a fan can move within a given time. It indicates how effectively a fan can circulate and distribute air throughout a space. It is typically measured in cubic feet per minute (CFM) or cubic meters per hour (m³/h). Our cooling fans are engineered with precision to generate powerful and consistent airflow, ensuring efficient cooling throughout your space. Whether it's a small room or a large industrial setting, our fans are built to deliver a refreshing breeze and promote better air circulation.

2. Static pressure, on the other hand, refers to the force exerted by a fan to push air against resistance, such as obstacles or ductwork. It's crucial in scenarios where air needs to be pushed through restricted spaces or ventilation systems. It is typically measured in inches of water column (inH2O) or pascals (Pa). Our cooling fans are specially designed to excel in high static pressure environments, ensuring optimal airflow even in challenging conditions. With our fans, you can count on maintaining consistent airflow and achieving excellent cooling performance, no matter the obstacles.

At Shenzhen Cooling Tech, we prioritize both airflow and static pressure to provide you with cooling solutions that surpass expectations. Our fans are meticulously engineered, incorporating advanced technologies and innovative designs to optimize both airflow and static pressure capabilities. Experience the perfect synergy of enhanced airflow and formidable static pressure, resulting in superior cooling performance and an environment that's both comfortable and refreshing.

3. In summary, airflow represents the volume of air moved by a fan, while static pressure measures the force exerted by a fan to push air through obstacles. Both airflow and static pressure are crucial considerations when selecting cooling fans, as they determine the fan's ability to circulate air effectively and overcome resistance in various applications.

Browse through our extensive collection of cooling fans on our website and discover the perfect blend of airflow and static pressure for your specific needs. Stay cool, stay refreshed, and enjoy the ultimate cooling experience with Shenzhen Cooling Tech.

02/11/2022

Current, speed, and power checking

18/08/2021

Cooling is well known for its advanced technology and stable production capacity with reliable quality and reasonable price.

https://www.coolingfanfactory.com/

Fan Types - Differentiated by shapeAxial fans have always been the most commonly used type.The axial fans have an impell...
01/08/2021

Fan Types - Differentiated by shape

Axial fans have always been the most commonly used type.

The axial fans have an impellor installed in the core of the frame, which draws in air and discharges it along the direction of the rotating shaft straightly. When you hear the word fan, This is probably what you think of it. Axial fans often appear in our daily life, with the characteristics of high airflow and low noise.

Axial fans include Counter Rotating Fans (in which the impellers of two axial fans are connected in series and rotate in contrary directions to provide high static pressure and improve the straightness of the airflow), Durability Fans (which can be used in extreme conditions, such as extremely hot or cold environments), and Reversible Flow Fans (the rotating direction of blades can be reversed to realize airflow in both directions). All of these can be selected to meet the needs of your device.

Unlike axial fans, Blowers and Centrifugal fans draw in air from the inlet side and discharge it after changing the airflow direction by 90 degrees.

Blowers and centrifugal fans are ideal for devices where there is not enough space to exhaust air in a straight direction from the appliance. Blowers, due to their high static pressure performance, are ideal for localized cooling applications where the air is blown in a precise manner and used for internal cooling of equipment with high-density of mounted components. Similarly, centrifugal fans are suitable for exhausting air from the inside of equipment with high mounting densities.

30/07/2021

The Decisive Factor of Service Life of Electronic

The more components are used in an electronic appliance, the more factors affect its service life. When designing an appliance, its service life is sometimes defined as being equal to the Mean Time Between Failure (MTBF) of its electronic components.


The service life of the fan, however, generally does not depend on the service life of its electronic components, but on that of its mechanical components. i.e., What matters most is the service life of the bearing part of the motor that rotates the blade. There are various types of bearings, but all Cooling fans use ball bearings for high reliability.

There are two types of life for ball bearings: fatigue life and grease life. Different from industrial motors, the load on fan bearings is comparatively small, so fatigue life is rarely an issue. Therefore, the grease life of ball bearings is the most critical factor for the service life of fans.

7 Tips to Make Appliances Running Quieter1. System ImpedanceThe area between the air inlet and outlet of a cabinet accou...
25/07/2021

7 Tips to Make Appliances Running Quieter

1. System Impedance
The area between the air inlet and outlet of a cabinet accounts for 60% to 80% of the total system impedance. Besides, the greater the air flow, the higher the noise level. The higher the total system impedance, the more the air flow required for cooling. So, to minimize noise, the system impedance must be reduced to the lowest possible level.

2. Airflow Disturbance
Turbulence caused by obstacles encountered along the airflow path generates noise. Thus, any obstruction, especially in the critical inlet and outlet area, must be avoided to reduce noise.

3. Fan Speed and Size
Since a high-speed fan generates more noise than a low-speed one does, try and select a low-speed fan whenever possible. A larger, slower fan is very often quieter than a smaller, faster fan while delivering the same air flow.

4. Temperature Rise
The air flow required for cooling is inversely proportional related to the temperature rise allowed within the system. A slight increase in the allowable temperature rise leads to a significant change in air flow required. Thus, if there is a little compromise to the limit imposed on allowable temperature rise, the air flow required will be less considerably. Consequently, the noise is remarkably declined.

5. Vibration
In some cases, the weight of a system is light, or the system is specified in certain operating methods. It is recommended to use a soft and flexible isolator to avoid vibration transmission.

6. Voltage Variation
Voltage variation will affect the noise level. The higher the voltage applied to the fan, the higher the speed, the greater the vibration, the greater the noise.

7. Design Considerations
The design of every component of the fan affects the noise level. Following factors that affect noise must be considered while designing: the size of the winding core, the design of blade and frame, and accurate manufacturing and balance.

Advantages and Disadvantages of Hydraulic Bearing on Cooling FansThe hydraulic bearing has larger oil storage space than...
23/07/2021

Advantages and Disadvantages of Hydraulic Bearing on Cooling Fans

The hydraulic bearing has larger oil storage space than the sleeve bearing and has a unique oil supply circuit of loop type.
As its bottom is sealed completely, the lifetime is longer than that of sleeve bearing.
It is suitable for high, medium, and low-speed fans. The average life of hydraulic bearings is 40000-50000 hours.

Advantages: low noise, longer life than sleeve bearing.

Disadvantages: a little more expensive than sleeve type.

Advantages and Disadvantages of Ball Bearing on Cooling FansBall bearing has the characteristics of rolling friction by ...
23/07/2021

Advantages and Disadvantages of Ball Bearing on Cooling Fans

Ball bearing has the characteristics of rolling friction by metal beads, small contact surface, and small friction coefficient.
Lifetime is improved because the friction of bearing surfaces is reduced.
Cause none oil leak, it is suitable for products that are often operated in different angles and directions.

Advantages: Long service life, suitable for the fans with higher rotation speed.
Disadvantages: high price, high noise level caused by rolling of metal beads.

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10 Building, Yinhai Industrial Zone, Yuanshan Street, Longgang District
Shenzhen

Telephone

+8619974833123

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