Zhejiang Nicety Electric Machinery Co., LTD. (NEM), founded in 1993, currently NEM members are Hangzhou Sunlife Electric high-tech enterprise R & D center, Zhejiang Jiaxing Nicety production base and Longquan Nicety High-tech Enterprise company headquarters.
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The company has established a complete, effective quality management system, implemented the ISO/TS16949 international quality light system standard.
Products are mainly exported to North America, Europe, Middle East, Southeast Asia, South America and other countries and regions.
Unlike traditional fans that rely on brushes and commutators to operate, brushless fans use electronic circuits to control their rotation. This eliminates the need for physical brushes, resulting in a more efficient and reliable cooling solution. By utilizing magnets and sensors, brushless fans can dynamically adjust speed and airflow to optimize performance while minimizing energy consumption. Brushless fans are commonly used in a variety of applications that require cooling or air circulation, such as computers, electronics, and industrial equipment. Their energy efficiency, longevity, quiet operation, precise control, and compact design make them to traditional fans in a variety of applications. Whether in computers, industrial environments or automotive cooling systems, brushless fans deliver unparalleled performance and reliability. Employing this innovative cooling solution increases efficiency, reduces energy consumption and creates a more comfortable environment.
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An evaporative fan, also known as an evaporative air conditioner or wet cooler, is a device used to reduce ambient temperature. They cool the surrounding air by evaporating moisture, providing an energy-efficient and environmentally friendly air conditioning solution, especially suitable for dry and hot climate conditions. Evaporative fans use the evaporation principle of water to cool the air. During the evaporation process, a fan blows hot air through a water medium (usually wet filter paper or fluffy humidified fiber), so that the heat in the air is used to evaporate water, thereby cooling the air. This process lowers the temperature of the air while increasing its humidity. Evaporative fans typically consume less electrical energy than traditional refrigeration systems because they do not require compressed refrigerant. Additionally, evaporative fans do not emit harmful chemicals, making them environmentally friendly.
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A blower is a fan that uses a special voltage supply to drive the blower's rotor to create airflow. It usually consists of an electromagnet stator and a permanent magnet rotor. The coils on the stator generate a magnetic field through electric current, while the permanent magnets on the rotor are acted upon by a fixed magnetic field. When current passes through the stator coil, the force generated by the magnetic field rotates the rotor, thereby driving the equipment to operate. The blower motor is precisely designed and machined to ensure its efficiency and reliability. It usually has low noise, high efficiency, long life and stable performance. Blower motors are widely used in various fields, such as electronic equipment cooling, automobile ventilation, industrial production, etc.
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A brushed motor is a common type of DC motor with a relatively simple structure that uses brushes and brushes to transmit current to a rotating part to produce mechanical motion. A brushed motor consists of a rotating part called the rotor and a stationary part called the stator. The rotor usually includes permanent magnets, while the stator includes coils. Brushes and brushes are attached to the stator and they are in contact with the electronic slip rings of the rotating part so that current can enter the rotating part. The brushes are a conductive material, usually made of carbon or carbide, that are tightly attached to the stator along with the brushes (also called brush holders). The brushes pass current to the rotating part by contacting the collector ring (usually on the rotating part), thereby creating a magnetic field interaction and inducing rotational motion.
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Brushed electronic fan, in which the motor adopts brushed DC motor technology. The motor of this kind of fan includes brushes and brushes that are in contact with the rotating part of the motor, called the rotor, to transfer current to the rotating part, which creates rotation. Brushed motors can easily change direction because the polarity of the current can be reversed, allowing the fan to rotate forward or reverse. The speed of the brushed motor can be precisely controlled by adjusting the current intensity, which allows the speed of the fan to be adjusted within a certain range.
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2025.01
1. Advanced design conceptZhejiang Nicety Electric Machinery Co., LTD. focuses on scientific and technological innovation, constantly absorbs advanced technologies at home and abroad, and adheres to the business philosophy of "today's quality, tomorrow's market". In the design of fan motors, the company adopts advanced design concepts to ensure that the products are in the best state in terms of performance, structure and materials, thereby improving the reliability and service life of the products. 2. Selection of high-quality raw materialsThe quality of raw materials directly affects the performance and life of the products. When manufacturing fan motors, Zhejiang Nicety Electric Machinery Co., LTD. selects high-quality raw materials, such as high-quality silicon steel sheets, copper wires, etc., to ensure that the magnetic conductivity and electrical conductivity of the motor are in the best state. The company also pays attention to the environmental protection properties of raw materials and selects materials that meet environmental protection standards to reduce the impact on the environment. 3. Exquisite production technologyPrecise manufacturing technology: The company has advanced production equipment and exquisite production technology to ensure that the manufacturing accuracy of fan motors meets the requirements. Through precise processing and assembly, mechanical loss and friction loss are reduced, and the efficiency and reliability of the motor are improved.Strict quality control: During the production process, the company implements strict quality control standards and conducts strict inspection and testing on each production link. Through comprehensive quality control, ensure that the quality and performance of the products meet customer requirements.4. Optimized electrical performance parametersThe company optimizes the design of the electrical performance parameters of the fan motor, and improves the efficiency and power factor of the motor by changing the slot shape and optimizing the winding structure. The company also pays attention to the heat dissipation performance design of the motor to ensure that the motor can effectively dissipate heat during operation, reduce temperature rise, and increase the service life of the motor. 5. Comprehensive quality certification and testingZhejiang Nicety Electric Machinery Co., LTD.'s products have passed the ISO9001-2000 application management system certification and have patented technologies with independent intellectual property rights. The company conducts comprehensive quality certification and testing during the production process to ensure the quality and reliability of the products. The company also regularly samples and tests the products to verify whether the performance and life of the products meet the design requirements.
2025.01
1. Choose the right fan type and structureThe working principle of Centrifugal fans is based on Newton's third law, that is, action and reaction. Through the rotating impeller, the fan converts mechanical energy into kinetic energy of airflow, thereby realizing gas transportation. When choosing the right fan type and structure, the following key factors need to be considered: 1. Air volume and air pressure requirementsAir volume refers to the volume of gas passing through the fan per unit time, while air pressure represents the ability of the fan to overcome resistance and transport gas. Different application scenarios have different requirements for air volume and air pressure. In large industrial plants, high air volume may be required to quickly replace indoor air; while in the smoke exhaust system of high-rise buildings, high air pressure is required to ensure that the smoke can be discharged smoothly. When selecting, the air volume and air pressure requirements of the application scenario should be clarified first. 2. Installation space and structural requirementsThe size and shape of the installation space have an important impact on the selection of fans. In a limited space, it may be necessary to choose a compact fan design or adopt a special installation method (such as wall-mounted, ceiling-mounted, etc.). The structural requirements of the fan should also be taken into account, such as whether special properties such as explosion-proof, corrosion-resistant, and high-temperature resistant are required. 3. Noise and energy efficiencyNoise and energy efficiency are important indicators for measuring fan performance. In application scenarios that require low noise, fans with low noise designs should be selected, such as using noise reduction measures such as silencers and sound insulation materials. Energy efficiency is also a factor that cannot be ignored. Efficient fans can provide stable air volume and air pressure output while reducing energy consumption. 2. Optimize the design of Custom Centrifugal Fans according to specific application scenariosAfter selecting the appropriate fan type and structure, how to further optimize the design of Custom Centrifugal Fans to meet the needs of specific application scenarios has become a more detailed and complex task. 1. Optimization of impeller designThe impeller is the core component of the fan, and its design directly affects the performance and efficiency of the fan. By optimizing the shape, number of blades and angle of the impeller, the air volume and air pressure output of the fan can be significantly improved, while reducing noise and energy consumption. The use of streamlined blade design can reduce the resistance of the airflow on the blades and improve the efficiency of the fan; while increasing the number of blades can increase the air volume of the fan to a certain extent. 2. Optimization of casing designThe casing is another important component of the fan, and its design has an important impact on the airflow distribution and noise level of the fan. By optimizing the shape and size of the casing, the flow state of the airflow inside the fan can be improved, and the eddy and turbulent phenomena can be reduced, thereby improving the efficiency and stability of the fan. The use of sound insulation materials and sound-absorbing structures can reduce the noise level of the fan. 3. Selection of motor and transmission systemThe motor and transmission system are the power source of the fan, and their performance directly affects the operating efficiency and reliability of the fan. When selecting a motor, its power, speed, efficiency and other parameters should be considered to ensure that the fan can operate stably and provide the required air volume and air pressure. The selection of the transmission system should also fully consider factors such as its transmission efficiency, stability and maintenance cost. 4. Application of intelligent control systemsWith the development of intelligent technology, more and more fans are beginning to use intelligent control systems for precise control. Through sensors that monitor the operating status and environmental parameters of the fan in real time, the intelligent control system can automatically adjust the fan speed and air volume output to achieve the goals of energy saving and stable operation. The intelligent control system can also provide functions such as fault warning and remote monitoring to reduce operation and maintenance costs and improve operation and maintenance efficiency.
2025.01
I. Achieving low noise 1. Forward-inclined blade designOne of the core advantages of EC Forward-Tilting Centrifugal Fans is its forward-inclined blade design. This design allows the airflow to transition more smoothly on the blade surface, reducing vortices and turbulence, thereby effectively reducing the generation of noise. Compared with traditional backward-inclined or radial blades, the forward-inclined design can more effectively guide the airflow, reduce the friction and collision between the airflow and the blades, and thus reduce the noise level. 2. Optimizing blade shape and materialIn addition to the inclination angle of the blades, EC Forward-Tilting Centrifugal Fans also further reduce noise by optimizing the shape and material of the blades. The blades are usually made of lightweight and strong materials, such as aluminum alloy or plastic composite materials, which not only reduce the overall weight of the fan, but also improve the rigidity and durability of the blades. The shape of the blades is precisely calculated and optimized to ensure that the required air volume is provided while minimizing the generation of noise. 3. Intelligent speed controlA notable feature of EC fans is their built-in intelligent speed control module. This module can automatically adjust the fan speed according to the ambient temperature or load requirements, thereby ensuring the heat dissipation effect while minimizing noise. When the temperature is low or the load is light, the fan can run at a lower speed to reduce the noise; when the temperature rises or the load increases, the fan will automatically speed up to provide sufficient heat dissipation capacity. 4. Airflow path optimizationIn order to reduce noise, EC Forward-Tilting Centrifugal Fans also optimize its airflow path. By rationally designing the fan housing and air inlet, it can ensure that the airflow is smoother when passing through the fan, reducing airflow turbulence and eddy currents, thereby further reducing the noise level. 2. Realization of low vibration1. High-precision balance correctionVibration is one of the common problems when the fan is running, and EC Forward-Tilting Centrifugal Fans use high-precision balance correction technology to reduce vibration. During the manufacturing process, each blade will undergo rigorous balancing tests to ensure that they can achieve the best balance when rotating. This balancing correction technology not only improves the running stability of the fan, but also significantly reduces the generation of vibration and noise. 2. High-performance bearings and lubrication systemsThe bearing is one of the key rotating parts in the fan, and its performance directly affects the vibration and noise level of the fan. EC Forward-Tilting Centrifugal Fans usually use high-performance bearings and lubrication systems, such as double ball bearings or fluid dynamic bearings, which have higher precision and lower friction coefficients, and can significantly reduce the generation of vibration and noise. The optimization of the lubrication system also ensures the stability and durability of the bearings during long-term operation. 3. Shock-absorbing designIn order to further reduce the impact of vibration on the surrounding environment, EC Forward-Tilting Centrifugal Fans also adopts a shock-absorbing design. Installing shock-absorbing pads or shock-absorbing springs on the bottom or casing of the fan can absorb and disperse vibration energy, thereby reducing the impact of vibration on the equipment and the surrounding environment. This shock-absorbing design not only improves the running stability of the fan, but also protects the surrounding equipment and structures from vibration damage. 4. Intelligent Monitoring and AdjustmentSimilar to intelligent speed control, EC Forward-Tilting Centrifugal Fans also have intelligent monitoring and adjustment functions. Through the built-in sensors and control system, the vibration status of the fan can be monitored in real time and adjusted. When abnormal vibration is detected, the control system can automatically adjust the fan speed or shut down the fan to avoid further damage. This intelligent monitoring and adjustment function not only improves the reliability and durability of the fan, but also provides users with a more convenient and efficient management method.
2024.12
1. Fan selection and sizeFan selection is the most basic and crucial step in the installation process. Choosing the right fan can not only improve the operating efficiency of the system, but also avoid unnecessary energy waste. EC Backward Tilting Centrifugal Fans excel in energy efficiency and operating stability, but different application scenarios have different requirements for fans, and they need to be selected based on the following factors: Flow and pressure requirements: Select the appropriate fan model based on the required air volume and pressure calculation. The fan's performance curve should match the system's requirements to avoid selecting a fan that is too large or too small.Fan speed and adjustment range: EC fans usually have a wider adjustment range, and the adjustment requirements of the system under different load conditions need to be considered to ensure that the fan's speed range can meet the actual use.Power and efficiency: EC fans have high energy efficiency, but the power and efficiency of different models are also different. The most economical and efficient fan should be selected under load.2. Installation location and space requirementsThe installation location of the fan directly affects its working efficiency and operating life. When installing EC Backward Tilting Centrifugal Fans, special attention should be paid to the following points: Ventilation and heat dissipation: The installation location should ensure that there is enough ventilation space around the fan to avoid heat accumulation. Fans usually generate a certain amount of heat, especially when they are running for a long time, it is necessary to ensure that they have a good heat dissipation environment. Avoid installing the fan in places with poor air circulation.Avoid vibration interference: The fan will generate a certain amount of vibration when it is running. During installation, ensure that there are sufficient isolation measures between the fan and the building structure to reduce the transmission of vibration to other equipment or buildings, and avoid unnecessary noise and structural damage. A common practice is to use shock-absorbing pads or shock-absorbing brackets.Space layout: The fan needs to be installed in a location that is convenient for maintenance, and sufficient space should also be left for cleaning and maintenance. The height and width of the installation space need to be determined according to the size of the fan to ensure that the fan can be installed smoothly and maintain the best working condition.3. Pipeline and airflow designThe design of the fan's pipeline system directly affects the flow efficiency of the airflow. During installation, special attention should be paid to the layout, size and connection method of the pipeline: Matching the pipeline size with the fan: The connection between the fan outlet and the pipeline needs to ensure good sealing to avoid airflow leakage affecting the performance of the fan. The diameter of the pipeline should be selected according to the inlet and outlet sizes of the fan to avoid excessively large pipelines causing too low fan load or too small pipelines causing too high fan load.Elbows and joints in the pipeline: Try to reduce the number of elbows and joints in the pipeline, because too many elbows will increase the resistance of the airflow and affect the working efficiency of the fan. If elbows are required, the appropriate bending radius should be selected to reduce the loss of air flow.Airflow stability: After the fan is installed, the pipeline should try to avoid the formation of unstable airflow areas to prevent the local air flow rate from being too fast or too slow, affecting the airflow distribution of the entire system and the operating efficiency of the fan.4. Electrical connection and commissioningThe electrical control system of EC Backward Tilting Centrifugal Fans needs to match the design and working mode of the fan itself. Correct electrical connection and commissioning are essential: Power supply requirements: EC fans usually have more sophisticated electrical control systems, and the voltage and frequency of the power supply must meet the technical requirements of the fan. During installation, the stability of the power supply must be checked to ensure that the power supply meets the load requirements of the fan. Grounding and protection: The electrical part of the fan needs to be well grounded to prevent electrical failures. For EC fans, special attention should also be paid to electrical protection measures such as overload protection and short-circuit protection. Speed control: EC fans are generally speed-controlled by frequency converters. During the installation process, it is necessary to confirm the compatibility of the frequency converter with the fan and connect it to the electrical control system as required. In addition, the speed control function needs to be fully debugged to ensure that it can work properly under various loads. 5. Noise and vibration controlEC Backward Tilting Centrifugal Fans have low working noise, but some vibration and noise may still be generated, especially under high load or fan failure. Some measures should be taken during the installation process to reduce the spread of noise and vibration: Shock-absorbing support: Shock-absorbing support devices such as rubber pads or spring brackets should be used when installing the fan to reduce direct contact between the fan and the ground or wall and reduce the spread of vibration.Sound insulation measures: If necessary, consider installing sound insulation panels or mufflers to reduce the impact of noise on the surrounding environment. Especially in residential areas or industrial environments where low noise is required, noise control is very critical.6. Maintenance and careIn order to ensure that EC Backward Tilting Centrifugal Fans can operate efficiently for a long time, regular maintenance and care are essential. During the installation stage, the following maintenance factors need to be considered: Easy to clean: The fan should be installed in an easy-to-clean location to avoid dust and dirt accumulation, which will affect the efficiency of the fan. Especially in environments with heavy air pollution, the air inlet and outlet of the fan need to be cleaned regularly.Inspection and replacement of parts: Regularly inspect the various parts of the fan, including motors, bearings, fan blades, etc., to ensure that they are in good working condition. If necessary, replace aging or damaged parts to prevent failure.Lubrication and adjustment: For parts that need lubrication, regularly check and add appropriate amount of lubricating oil to ensure that the fan rotates smoothly. At the same time, it is also necessary to regularly perform vibration detection on the fan to confirm whether it is operating normally.
Zhejiang Nicety Electric Machinery Co., Ltd. specializes in the production of four series of products: condenser electronic fan, radiator (water tank) fan, blower, and air conditioner assembly. Professional production American, European, Japanese, Korean And Domestic brand DC automotive axial fans.
Email: [email protected] / [email protected]
Tel: +86-0578-7125439 / +86 181 0658 9231
Address：No. 98, Guangda Street, Jinsha Industrial Zone, Longquan City, Zhejiang Province, China
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