Product Description

HangZhou 10000 rpm 40x40x28mm 12v dc electric ceiling fan motors for transformer

Product description:

 

Size  Model Rated Voltage
(V)
Startup Voltage
(V)
Current Amp
 (A)
Speed
(RPM)
Air flow 
(CFM)
Static Pressure
(mmH20)
Noise Level
(dB-A)
Weight
(g)
40*40*28mm XYJ12S4571L 12 6 0.15 7000 9.36 3.39 31 32.00
XYJ12S4571M 12 6 0.20 9000 11.25 5.16 36 32.00
XYJ12S4571H 12 6 0.25 10000 13.35 6.28 40 32.00
XYJ12S4571L 24 12 0.07 7000 9.36 3.39 31 32.00
XYJ12S4571M 24 12 0.11 9000 11.25 5.16 36 32.00
XYJ12S4571H 24 12 0.17 10000 13.35 6.28 40 32.00

Our advantage:

Certificate:

Company information:

Packing&Shipping:

RFQ:
 

1. What’s the difference between the sleeve and ball bearing fan?

The ball bearing brand was CHINAMFG bearing imported from Japan.

The warranty for ball bearing fan is 30,000 hours but sleeve bearing just 10,000 hours.

Ball bearing has 5-8 years lifetime,sleeve bearing has 2-3 years lifetime.

Ball bearing fan noise level won’t change for a long time term,but sleeve bearing fan noise level will grown as time goes on.

Sleeve bearing is cheaper than ball bearing fans.

motor cooling plastic fan impeller DC 40mm cooling fan 40*40*7mm notebook cooler 

2. What kind of function can we choose for fan?

Optional function :Auto-restart ,Speed detection,Stppage Alarm,Waterproof(IP55-IP68 optional), PWM function ,Temperature control etc.

 

3. How long can your wire length be ?

The wire length and terminal could be customized as your request. We just need the picture of connector and rank of wires for confirm.(Default wire length is 200mm)

 

4. What’s your MOQ and delivery date ?

MOQ200PCS

Sample lead time:5 working days

Mass production:15 working days

Waterproof fans need 1 more week

 

5. What kind of transportation can we choose ?

Express:DHL,EMS,Fedex,UPS,IATA,TNT,China AIR Express,Iceland express etc.

Sea transportation as you request.

 

6. What’s your packaging?

Knife card packing,carton package

normal carton size 43X28X43CM,different model will lead to carton size different.

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Material: Plastic
Blade Material: Plastic
Type: DC Fan
Electric Current Type: DC
Mounting: Screw Fixation
Certification: RoHS, UL, CE, ISO9001
Samples:
US$ 1.35/Piece
1 Piece(Min.Order)

|

Customization:
Available

|

dc motor

Can you explain the basic working principle behind a DC motor?

A DC (Direct Current) motor operates based on the fundamental principle of electromagnetic induction. It converts electrical energy into mechanical motion by utilizing the interaction between magnetic fields and current-carrying conductors. Here’s a detailed explanation of the basic working principle behind a DC motor:

1. Construction:

A DC motor consists of several key components:

  • Stator: The stator is the stationary part of the motor and typically consists of permanent magnets or electromagnets that produce a fixed magnetic field.
  • Rotor: The rotor is the moving part of the motor and is connected to the shaft. It contains coils or windings that carry the armature current.
  • Armature: The armature is the core of the rotor that holds the armature windings. The windings are usually made of copper wire and are evenly spaced around the armature.
  • Commutator: The commutator is a cylindrical ring attached to the rotor shaft. It consists of multiple segments, usually made of copper, that are insulated from each other.
  • Brushes: The brushes are stationary contacts that make physical contact with the commutator segments. They are typically made of carbon or graphite and provide electrical connections to the armature windings.

2. Electromagnetic Induction:

When a current-carrying conductor is placed in a magnetic field, it experiences a force due to the interaction between the magnetic field and the current. This phenomenon is described by the right-hand rule, where the direction of the force is perpendicular to both the current direction and the magnetic field direction.

3. Motor Operation:

When a DC motor is powered, a DC voltage is applied to the armature windings through the brushes and commutator. The current flowing through the armature windings creates a magnetic field around the windings. This magnetic field interacts with the fixed magnetic field produced by the stator, resulting in a force that causes the rotor to rotate.

4. Commutation:

The commutation process is crucial for the continuous rotation of the rotor in a DC motor. As the rotor spins, the brushes make contact with different commutator segments, effectively reversing the direction of the current in the armature windings at the appropriate timing. This reversal of current flow ensures that the torque generated in the armature windings is always in the same direction, allowing for continuous rotation of the rotor.

5. Speed Control:

The speed of a DC motor can be controlled by varying the applied voltage. Reducing the voltage results in a decrease in the magnetic field strength, which in turn decreases the force acting on the armature windings. This reduction in force leads to a decrease in the motor’s speed. Conversely, increasing the voltage increases the speed of the motor. Precise speed control can be achieved by using electronic circuits to regulate the voltage supplied to the motor.

6. Advantages and Applications:

DC motors offer several advantages, including:

  • High starting torque, making them suitable for applications requiring high initial force.
  • Excellent speed control capabilities, allowing for precise and adjustable speed regulation.
  • Relatively simple construction and ease of maintenance.
  • Wide range of sizes and power ratings, making them adaptable to various applications.

DC motors find extensive use in numerous applications, such as robotics, industrial automation, electric vehicles, appliances, and more.

By understanding the basic working principle behind a DC motor, one can appreciate its functionality and explore its applications in different fields.

dc motor

How is the efficiency of a DC motor determined, and what factors can affect it?

In a DC (Direct Current) motor, efficiency refers to the ratio of the motor’s output power (mechanical power) to its input power (electrical power). It is a measure of how effectively the motor converts electrical energy into mechanical work. The efficiency of a DC motor can be determined by considering several factors that affect its performance. Here’s a detailed explanation of how the efficiency of a DC motor is determined and the factors that can influence it:

The efficiency of a DC motor is calculated using the following formula:

Efficiency = (Output Power / Input Power) × 100%

1. Output Power: The output power of a DC motor is the mechanical power produced at the motor’s shaft. It can be calculated using the formula:

Output Power = Torque × Angular Speed

The torque is the rotational force exerted by the motor, and the angular speed is the rate at which the motor rotates. The output power represents the useful work or mechanical energy delivered by the motor.

2. Input Power: The input power of a DC motor is the electrical power supplied to the motor. It can be calculated using the formula:

Input Power = Voltage × Current

The voltage is the electrical potential difference applied to the motor, and the current is the amount of electrical current flowing through the motor. The input power represents the electrical energy consumed by the motor.

Once the output power and input power are determined, the efficiency can be calculated using the formula mentioned earlier.

Several factors can influence the efficiency of a DC motor:

1. Copper Losses:

Copper losses occur due to the resistance of the copper windings in the motor. These losses result in the conversion of electrical energy into heat. Higher resistance or increased current flow leads to greater copper losses and reduces the efficiency of the motor. Using thicker wire for the windings and minimizing resistance can help reduce copper losses.

2. Iron Losses:

Iron losses occur due to magnetic hysteresis and eddy currents in the motor’s iron core. These losses result in the conversion of electrical energy into heat. Using high-quality laminated iron cores and minimizing magnetic flux variations can help reduce iron losses and improve efficiency.

3. Friction and Windage Losses:

Friction and windage losses occur due to mechanical friction between moving parts and air resistance. These losses result in the conversion of mechanical energy into heat. Proper lubrication, efficient bearing systems, and aerodynamically optimized designs can help minimize friction and windage losses.

4. Brush and Commutator Losses:

In brushed DC motors, brush and commutator losses occur due to the friction and electrical resistance at the brush-commutator interface. These losses result in the conversion of electrical energy into heat. Using high-quality brushes and commutators, reducing brush voltage drop, and minimizing the number of commutator segments can help reduce these losses.

5. Magnetic Field Design:

The design of the magnetic field in the motor significantly affects its efficiency. Optimizing the magnetic field for the specific application, such as selecting appropriate magnet materials or designing efficient electromagnets, can improve the motor’s efficiency.

6. Motor Load:

The load on the motor, including the torque and speed requirements, can impact its efficiency. Operating the motor close to its optimal load conditions or utilizing speed control techniques, such as pulse width modulation (PWM), can help improve efficiency by reducing unnecessary power consumption.

7. Motor Size and Construction:

The size and construction of the motor can influence its efficiency. Properly sizing the motor for the intended application and optimizing the design for reduced losses, improved cooling, and efficient heat dissipation can enhance overall efficiency.

It’s important to note that the efficiency of a DC motor is typically highest at or near its rated load conditions. Deviating significantly from the rated load can result in reduced efficiency.

In summary, the efficiency of a DC motor is determined by comparing the output power to the input power. Factors such as copper losses, iron losses, friction and windage losses, brush and commutator losses, magnetic field design, motor load, and motor size and construction can all influence the efficiency of a DC motor. By considering and optimizing these factors, the overall efficiency of the motor can be improved.

dc motor

Are there innovations or emerging technologies in the field of DC motor design?

Yes, there have been several innovations and emerging technologies in the field of DC (Direct Current) motor design. These advancements aim to improve the performance, efficiency, reliability, and overall capabilities of DC motors. Here’s a detailed explanation of some notable innovations and emerging technologies in DC motor design:

1. Brushless DC Motors:

One significant advancement in DC motor design is the development and widespread adoption of brushless DC motors (BLDC motors). Unlike traditional DC motors that use brushes for commutation, BLDC motors employ electronic commutation through the use of permanent magnets and motor controller circuits. This eliminates the need for brushes, reducing maintenance requirements and improving overall motor efficiency and lifespan. BLDC motors offer higher torque density, smoother operation, better speed control, and improved energy efficiency compared to conventional brushed DC motors.

2. High-Efficiency Materials:

The use of high-efficiency materials in DC motor design has been an area of focus for improving motor performance. Advanced magnetic materials, such as neodymium magnets, have allowed for stronger and more compact motor designs. These materials increase the motor’s power density, enabling higher torque output and improved efficiency. Additionally, advancements in materials used for motor windings and core laminations have reduced electrical losses and improved overall motor efficiency.

3. Power Electronics and Motor Controllers:

Advancements in power electronics and motor control technologies have greatly influenced DC motor design. The development of sophisticated motor controllers and efficient power electronic devices enables precise control of motor speed, torque, and direction. These technologies have resulted in more efficient and reliable motor operation, reduced energy consumption, and enhanced motor performance in various applications.

4. Integrated Motor Systems:

Integrated motor systems combine the motor, motor controller, and associated electronics into a single unit. These integrated systems offer compact designs, simplified installation, and improved overall performance. By integrating the motor and controller, issues related to compatibility and communication between separate components are minimized. Integrated motor systems are commonly used in applications such as robotics, electric vehicles, and industrial automation.

5. IoT and Connectivity:

The integration of DC motors with Internet of Things (IoT) technologies and connectivity has opened up new possibilities for monitoring, control, and optimization of motor performance. By incorporating sensors, actuators, and connectivity features, DC motors can be remotely monitored, diagnosed, and controlled. This enables predictive maintenance, energy optimization, and real-time performance adjustments, leading to improved efficiency and reliability in various applications.

6. Advanced Motor Control Algorithms:

Advanced motor control algorithms, such as sensorless control and field-oriented control (FOC), have contributed to improved performance and efficiency of DC motors. Sensorless control techniques eliminate the need for additional sensors by leveraging motor current and voltage measurements to estimate rotor position. FOC algorithms optimize motor control by aligning the magnetic field with the rotor position, resulting in improved torque and efficiency, especially at low speeds.

These innovations and emerging technologies in DC motor design have revolutionized the capabilities and performance of DC motors. Brushless DC motors, high-efficiency materials, advanced motor control techniques, integrated motor systems, IoT connectivity, and advanced control algorithms have collectively contributed to more efficient, reliable, and versatile DC motor solutions across various industries and applications.

China Standard Shenzhen 10000 Rpm 40X40X28mm 12V DC Electric Ceiling Fan Motors for Transformer   vacuum pump electricChina Standard Shenzhen 10000 Rpm 40X40X28mm 12V DC Electric Ceiling Fan Motors for Transformer   vacuum pump electric
editor by CX 2024-04-19