Today, with the rapid development of electronic products, cooling fans are applied to almost all industries, such as medical equipment, intelligent household appliances, sports equipment, power supply equipment, communication industry, security monitoring, military equipment, automobile industry, automation industry, etc. in these industries, general cooling fans are far from meeting the needs of various equipment. Therefore, fans with PWM speed regulation function have become the first choice for intelligent devices, For example, humidifiers, massage chairs and frequency converters all need PWM speed regulating cooling fans.

Intelligent devices require different cooling effects of cooling fans in different time periods and working hours with different degrees of load, which can effectively reduce energy consumption, extend the service life of the device, and enable the device to reach the best state in any operating state. In addition, when the device is overloaded, it will generate more heat than usual, it can also send a signal to the fan to quickly remove heat in a short time, To reduce the damage to the equipment caused by the high internal temperature of the equipment, which can not be achieved by the cooling fan without the PWM speed regulation function, so how does the cooling fan use the PWM function to regulate the speed?

1. The speed of the fan is adjusted through the control circuit, which is controlled by the pulse width modulation signal. There are four lines, and the standard fan has only two positive and negative lines. It can use the frequency and high and low voltage levels to control the speed of the cooling fan, and change the duty cycle through the PWM controller, so as to achieve the purpose of controlling the speed of the fan.

2. The PWM  fan can set the most appropriate speed by detecting the ambient temperature through the temperature sensor, which can reduce the noise of the fan. The fan consumes less power when running at low speed, which can prolong the battery life, reduce the noise emitted by the fan, and increase the service life of the fan.

Guangdong Chungfo is a manufacturer specialized in R & D and production of cooling fans. Our fans support PWM speed regulation function and can also be customized according to different equipment working environment!

Air volume refers to the total volume of air discharged or incorporated by the cooling fan per minute. If it is calculated in cubic feet, the unit of air volume is CFM. In cubic meters, that's CMM. The air volume unit often used by cooling fans is CFM.

Air volume is the most important indicator to measure the heat dissipation capability of heat dissipation fans. Obviously, the greater the air volume, the higher the heat dissipation capacity of the cooling fan. This is because air has a certain heat capacity ratio, and a larger volume of air, which means more air per unit time, carries more heat. So what factors will affect the air volume of the cooling fan?

1. Fan speed. The fan speed refers to the number of rotation times of the fan blades per minute. The unit is rpm. The fan speed is determined by the number of turns of the coil in the motor, the working voltage, the number of fan blades, the inclination Angle, the height, the diameter and the bearing system. Fast speed, that is, the fan out of the air volume is larger, in the case of not considering other factors, fast fan can better heat dissipation, but its disadvantage is also obvious, that is, will shorten the service life. Of course, it is also related to fan bearings. If it is an oil-bearing, too high speed is not necessarily a good thing, and ball bearings can achieve a higher speed.

2. Fan size. In fact, the wind speed and pressure of the same size fan are inversely proportional. The faster the wind speed, the greater the amount of wind, the smaller the wind pressure accordingly, so that the wind can not completely blow to the bottom of the radiator, so that the heat will accumulate at the bottom, so that the cooling effect is weakened. Therefore, if you need to increase the air volume and pressure of the fan at the same time, the only way is to increase the size of the fan. However, increasing the size of the fan brings with it a series of problems, such as being overweight. Therefore, we should not blindly pursue high speed, we should choose the most suitable cooling fan for their products according to the specific requirements of customers.

Guangdong Chungfo Electronic Technology Co., Ltd. focuses on the cooling needs of equipment in various industries. We are a cooling fan manufacturer specializing in R&D and supply of DC cooling fans, AC cooling fans and DC blower fans, etc. The product quality is excellent, the cooling fan gauge is complete, and the professional customization of cooling fans can be provided according to customer needs.

The cooling fan is one of the indispensable parts of the car. If the cooling fan doesn't work, it will cause the coolant temperature in the engine water tank to be too high. If the water temperature is too high, the water vapor in the water tank will spray out from the pressure relief hole. This situation is more dangerous, and the car can be started only after maintenance. So what are the reasons for the car cooling fan not working?

1. If the switch fails, most of the cooling fans used in the car are operated by electronic temperature control. The fan will not operate normally until the water temperature reaches the required temperature. If the switch fails, the water temperature of the car will rise and the fan will not be powered on normally, resulting in the cooling fan not running.

2. If the fan itself fails, it needs to be repaired immediately and replaced with a new cooling fan.

3. If the fan does not operate under normal water temperature, it is likely that the relay of the cooling fan has failed, and the relay damage is usually caused by poor circuit contact.

Now the weather is hot. Friends must pay attention to safety when driving, pay more attention to the normal use of auto parts, and eliminate potential safety hazards. Guangdong Chungfo specializes in the production of DC/AC cooling fans,cross flow fan,blower fan. The products have passed UL, CE, TUV and other certifications, providing customers and friends with more quality guaranteed fans.

Want to know what makes an air-cooled refrigerator special? Don't worry, today we're going to focus on a component that can't be ignored: the cooling fan. In fact, cooling fans play a crucial role in air-cooled refrigerators, and they have some compelling special designs and features, so let's take a look.

First of all, the location of the cooling fan deserves attention. They are usually located on the back of the refrigerator and are closely connected to the condenser. The choice of this location is not accidental, as it is able to effectively expel the generated heat, ensuring that the inside of the refrigerator maintains the proper temperature. This design improves the cooling effect while avoiding problems caused by overheating.

Secondly, the design and materials used in the cooling fan are also very special. They usually consist of efficient fan blades and a main air lead. Just like Chungfo's design and production of blades capable of low noise output high air volume, these fan blades are specifically designed to produce a strong airflow to provide sufficient cooling effect. The selection of materials takes into account the impact of long-term operation and low temperature environment on the fan, so that it can work in difficult conditions for more than five years without trouble.

Finally, the cooling fan also has intelligent control and adjustable functions. Some modern air coolers are equipped with intelligent control systems that can automatically adjust according to the temperature and load in the refrigerator. This means that the cooling fan can automatically start and stop as needed to work more efficiently. This feature helps to save energy and extend the life of the fan. The PCB board of the cooling fan produced by us is almost assembled by a professional technical team of workers, so when the customer requires the fan to have a self-starting function, TC temperature control function, RD alarm signal and so on, we can meet. And our company has many models of cooling fans are used in the refrigerator, such as D09232 this model of DC fan is the classic model of refrigerator application, most of the well-known refrigerator factories will use.

In general, the cooling fan in the air-cooled refrigerator has many special features. From the selection of their location, to the choice of design and materials, to the application of intelligent control and adjustable functions, these fans make an important contribution to the performance and effectiveness of the refrigerator. Guangdong Chungfo Electronic Technology Co., Ltd. is dedicated to the equipment cooling needs of various industries, is a professional cooling fan manufacturer. We can provide professional customization of cooling fans according to customer needs. If you have this need, please feel free to contact us.

Have you ever wondered how to make an air purifier last longer? The answer lies in a small device - a cooling fan. After applying the cooling fan to the air purifier, it can bring many benefits and give your air purifier a new life.

First, cooling fans improve ventilation efficiency. A good ventilation system is essential for an air purifier. Cooling fans introduce fresh air and discharge the treated air, helping the air purifier to better circulate air and improve purification efficiency. By improving ventilation, the cooling fan reduces the burden on the filter screen and prevents pollutants from accumulating inside the purifier, thereby extending the service life of the filter screen.

Secondly, the cooling fan can avoid the failure caused by overheating. Overheating may cause damage or failure of key components of the air purifier, affecting the stability and life of the product. By applying cooling fans, key components can be cooled effectively, reducing the risk of failure caused by overheating and making your air purifier more reliable.

Finally, cooling fans improve stability. Overheating can cause instability in the performance of the air purifier, such as noise, downtime and other problems. The use of cooling fans can keep the air purifier running at a suitable working temperature, maintain its stability, and improve the reliability and service life of the product. Like our Chungfo also has an application in the air purifier axial flow heat fan, AC12038, ultra-long life cooling fan. The fans can work very quietly, and the minimal noise ventilation system enables axial flow fans to have higher airflow for enhanced cooling performance. The PBT housing and blade ensure operation in the operating temperature range from -10 ° C to +70 ° C; Large air volume, uniform wind in and out, wear resistance, high temperature resistance; And has passed CE, UL and RoHS certification, is specially tailored for air purifier environmental protection equipment cooling fan! Guangdong Chungfo Electronic Technology Co., Ltd. is dedicated to the equipment cooling needs of various industries, is a professional cooling fan manufacturer. We can provide professional customization of cooling fans according to customer needs. If you have this need, please feel free to contact us.

Have you ever had a busy, uncomfortable room or office? In such an environment, ventilation fans become our salvation. Compared with cooling fans, ventilation fans have unique advantages in terms of air flow, let's take a look.

First of all, ventilation fans and cooling fans are different in design and function. Cooling fans are mainly used to cool electronic equipment and mechanical components, with a focus on strong heat dissipation. The ventilation fan is designed to provide a larger volume of air, let the air flow, make the indoor air more fresh and comfortable.

Secondly, the design of the ventilator pays attention to the balance of air volume and quiet performance. Ventilation fans usually have a large air volume and low wind power, such as our D03007 Lower Noise Air Cooler Micro Axial Ventilation Fan, the use of 7 wind blades design, in order to provide greater air volume, to ensure the effective flow of indoor air improve air performance at the same time, in order to reduce noise interference, but also the use of advanced shock absorption and noise control technology, Make it run with minimal noise. This creates a quiet, comfortable environment for the user. The cooling fan usually has a higher wind power and a smaller air volume, for example, the air volume of the 24 volt DC cooling fan is relatively small.