Does the size of the electric fan blade refer to a single piece, or the diameter of the fan blade?

The fan blade size refers to the size of the single piece, while the fan impeller size refers to the diameter size.

Electric fan is a household appliance that uses an electric motor to drive the fan blades to rotate to accelerate the circulation of air, which is mainly used to cool off the heat and circulate air. The fan blades are bird-wing in shape and are generally odd in number.

There are usually several principles for the design of fans:

1. The larger the fan blades, the more energy is required to rotate, but there are too few fan blades, and the air volume generated is not satisfied. Therefore, making an optimal fan requires multiple trials to achieve optimum. Moreover, there are more fans, the manufacturing price is high, and the maintenance cost is also high.

2. Fan blades are generally odd-numbered. If you use an even-numbered blade with a symmetrical shape, the balance is not adjusted, and resonance will occur, which may lead to the breakage of the blade or shaft. So it's generally an odd number of pieces.

3. The shape of the fan blade is bird-wing-shaped, so the design of the blade has a large flow rate and low noise, which conforms to the principle of fluid mechanics.

He refers to different things for different people, but generally refers to the diameter of the blades of the fan.

1. For ordinary consumers or users, the size of the fan blade of the electric fan refers to the diameter of the fan blade in their understanding.

Second, for the processing workers of electric fan blades, the size of the electric fan blades refers to the size of a single blade in their understanding, and this size can provide data for their processing.

Electric fan: referred to as electric fan, also known as fan and fan, is a household appliance that uses a motor to drive the fan blade to rotate to accelerate the circulation of air, mainly used to cool down and circulate air. It is widely used in homes, offices, shops, hospitals, hotels and other places.

The main components of the electric fan:

AC motors. Its working principle is that the energized coil rotates under force in a magnetic field.

Electrical energy is converted into mechanical energy, and at the same time, due to the resistance of the coil, it is inevitable that some of the electrical energy will be converted into thermal energy. Common household fans are essentially axial fans, i.e., the direction of the wind is parallel to the axis of rotation of the fan blades.

Judging from the air supply effect alone, the use of five-leaf fan is the best.

The following is an introduction to the common three-blade, four-blade and five-blade fans on the market

1. Three-leaf fan.

1. Under normal circumstances, the blades of an electric fan are three, because the triangle is the most stable.

2. From the perspective of mechanics, the three-blade fan can save electricity and energy.

3. It is because the appearance of the three-bladed fan is more beautiful, and the cost is moderate, and the excessive number of blades will increase the cost of the product.

Generally, the fan blades of electric fans are odd-numbered blades, while electric fans with even-numbered blades are prone to resonance when rotating, causing damage, so four-blade fans are generally not chosen.

Three, five-leaf fan.

Generally speaking, the more blades an electric fan has, the better its air supply effect. Although it will increase the load, the more fan blades, the smaller the "wind" can be cut, so that the wind blowing out is softer and the silence effect is better. If you don't consider the manufacturing cost and energy consumption, the five-blade fan is the most ideal fan.

Precautions for purchase:

1. Look at the random documents: the random files of each electric fan include the instruction manual, product certificate, electrical circuit diagram and packing list, and the quantity and quality of the parts should be checked and checked according to the packing list when purchasing.

2. See whether the net cover and fan blades are obviously deformed: on the assembled electric fan grille, use a pen to point to the highest point of a fan blade, slowly move the fan blade, and the distance between the corresponding points of the other fan blades and the pen tip should be very close, and then rotate the fan blade, pay attention to observe whether the rotation is light and flexible, and can stop at any position.

3. See whether the control mechanism is flexible: the control mechanism includes speed control switches, timing knobs, shaking head switches, lighting switches, etc., which should be flexible in operation and reliable in contact. For the speed control gear, it is not allowed to have two gears turned on at the same time or one gear cannot be pressed.

Press the stop button, and each speed stop button should be reset normally.

4. Look at the performance of the active part: the fan head of the electric fan runs flexibly at all angles of pitch and tilt, locks firmly, adjusts to the maximum depression angle or shakes the head to the final position, and the grille must not touch the fan pillar. When the fan is running, the stability should be good, it should not be tipped over, and the shaking angle should not be lower than 60-80 degrees.

5. Look at the starting performance: the starting performance is an important quality indicator of the electric fan. During the inspection, it should be adjusted in the light wind gear, and when the rated voltage of the power supply is 85%, that is, the voltage regulator will be used to reduce the voltage of 220 volts to 187 volts when the electric fan is started, the electric fan should be able to start from stationary and operate normally, the shorter the time required for an electric fan from start to normal operation, the better the starting performance of the fan motor.

Under the same conditions, the more blades, the greater the resistance, the slower the speed, and the smaller the wind, the advantage is that the stability is good, and the fewer blades is the opposite.

Therefore, the best effect of the use of electric fans with specific blades is to be analyzed by browning.

Under normal circumstances, the blades of an electric fan are three. There are three main reasons:

First, the triangle has stability and is three-legged;

The second is related to energy, from a mechanical point of view. 3 fans can form an asymmetrical reasonable mechanical power, when 1 blade does not have the power potential energy, the other 2 are in the state of potential energy, 2 potential energy blades can naturally easily drive a blade that does not have potential energy temporarily, which can save electricity and energy.

Third, because the appearance of the three-bladed fan is more beautiful, the cost is also moderate, and too many blades will increase the cost of the product.

Considering the characteristics of rotation balance, the fan blades of general electric fans are odd-numbered blades, while the electric fan with even-numbered blades is easy to resonate when rotating, causing damage, therefore, it is recommended to choose an electric fan with odd-numbered blades.

Common electric fans on the market generally have three to six leaves, and the size of the wind has nothing to do with the number of blades, but with the total area of the blades, the larger the area, the stronger the wind. The key also depends on how well the fan's motor performs. The more blades there are, the more loads you have, and when the impeller speed is high, many of the impellers form a kind of shield against the wind, and the more resistance the wind encounters.

Even blades are prone to resonance when rotating and are easily damaged. Generally speaking, electric fans with singular blades are more stable, not easy to shake, and are also conducive to expelling hot air upwards. The electric fan of the three leaves is the most common, and the cost is also relatively economical.

Electric fans are a relatively common daily necessities, basically every family has them, especially in the hot summer, the use of electric fans can reduce our body surface temperature and bring coolness.

Generally speaking, the more blades an electric fan has, the better the air supply effect. Although it will increase the load, the more the fan blades carry more fiber eggplant, the "wind" can be cut into smaller pieces, so that the wind blowing out is softer and the mute effect is better, which is the reason why the electric fan with four or five fan blades is quieter than the ordinary vertical "three-blade fan", and the wind blowing is much softer.

1. Under normal circumstances, the fan blades of the electric fan are three, because the triangle is the most stable;

2. From the perspective of mechanics, the three-blade fan can save electricity and energy.

3. The appearance of the three-bladed fan is more beautiful, the cost is moderate, and the number of leaves will increase the cost of the product;

4. The fan blades of the electric fan are all odd-numbered blades, while the even-numbered blade electric fan is easy to resonate when rotating, causing damage;

5. The more fan blades of the electric fan, the better the air supply effect, although it will increase the negative emptying load.

Kiss! Hello, happy to answer your <>

Pro, the common electric fans on the market are generally three to six leaves, the size of the wind has nothing to do with the number of blades, and the total area of the blades, the larger the area, the stronger the wind. Electric fan: referred to as electric fan, also known as fan and fan, is a household appliance that uses a motor to drive the fan blade to rotate to accelerate the circulation of air, mainly used to cool down and circulate air. It is widely used in homes, classrooms, offices, shops, hospitals and hotels.

A fan is mainly composed of components such as a fan head, blades, grille, and controls. Mechanical fans such as electric motors, front and rear end caps, and moving head air supply mechanisms originated in 1830, when an American named James Byron was inspired by the structure of clocks and invented a mechanical fan that could be fixed to the ceiling and driven by a clockwork. The cool breeze from the fan blades is cool, but it is a hassle to climb a ladder to wind up.

In 1872, a Frenchman named Joseph developed a mechanical fan that was started by a clockwork turbine and driven by a gear chain device, which was much more refined and convenient to use than the mechanical fan invented by Byron. Hope mine can help you <>

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