How to change the wind direction of the exhaust fan, the direction of rotation of the exhaust fan

When the reversing switch changes the wiring input, it changes the motor steering and the wind direction changes. The fan and motor are bidirectional, and the motor has three input lines. ChassisGrounding wire

When reverse, the efficiency will be low, and the air volume will be small. UnplugExhaust fanThe power plug will exhaust the fan to the motorJunction boxOpen it.

Find the capacitor of the exhaust fan, which has two wires on one end and three wires on the other.

Remove one end of the power inlet cable from the capacitor and connect the power cable to the other end of the capacitor.

The other wiring is not changed, and it is wrapped with insulating tape, and finally the junction box is covered.

The exhaust fan is a kind of air conditioning appliance that drives the fan blades to rotate and drive the airflow by the motor to make the indoor and outdoor air exchange, also known as the ventilation fan. The purpose of exhaust is to remove indoor dirty air, regulate temperature and humidity, and is widely used in homes and public places.

Exhaust fans, also known as negative pressure fans.

Negative pressure fans, etc., can use air convection to keep the room in a negative pressure state, forming a suction force, continuously inhaling outdoor air, and discharging the stuffy air indoors, so as to achieve the effect of ventilation and cooling.

The three-phase axial fan changes from exhaust to supply, and as long as any two of the phase wires are replaced, the steering is reversed.

To reverse the rotation of the single-phase fan, as long as a wire connected to the capacitor is changed from one end of the original capacitor to the other end of the capacitor, the single-phase motor will be reversed.

However, the change brings two problems: first, if the connection between the fan blade and the motor shaft is tightened by a nut, changing the steering may cause the nut to loosen and fall off, so the original nut on the shaft should be added with an anti-loosening gasket or a pin, unless the original design allows both forward and reverse rotation to be used. Second, the cooling problem of the motor itself, after the wind direction changes, the cooling environment of the motor itself changes, and it is necessary to pay attention to whether the temperature increase changes during continuous work.

In addition, the wind pressure generated by the exhaust fan is small, and when the air is supplied through the pipeline, if the pipe section is small and the pipe is longer, there will be greater resistance, whether the resistance will cause the motor to be overloaded and the temperature rise is larger, pay attention to it, otherwise it will affect its service life.

The effect of the exhaust fan is the same in both directions. One is exhausting from the inside to the outside, and the other is sending air from the outside to the interior.

Ventilation fans can be divided into one-way ventilation fans and two-way ventilation fans according to the ventilation method, and the ventilation fans are generally installed on walls or doors and windows. Ventilation fans can be divided into one-way ventilation fans and two-way ventilation fans according to the ventilation mode. One-way ventilation fans can be divided into two types: linkage type and air pressure type.

The linkage type is characterized by having only one working state, that is, exhaust or intake.

Before installing the exhaust fan, carefully check whether the fan is intact, whether the fastener bolts are loose or fall off, and whether the impeller has collided with the air cover. Carefully check whether the fan blades or louvers are deformed or damaged during transportation; When installing and selecting the environment of the air outlet, it should be noted that there should not be too many obstacles within the air outlet 2 5 3m.

When installing the exhaust fan, attention should be paid to the horizontal position of the fan, adjust it to the horizontal and stable plane of the fan and the foundation, and the motor should not be tilted after installation. When installing the fan, the adjusting bolt of the motor should be in a position that is convenient for operation, so as to facilitate the use of the belt tightness when the rapid attack is adjusted; When installing the fan bracket, it is necessary to make the bracket and the foundation plane level stable, and if necessary, install an angle iron next to the fan for reinforcement.

After the fan is installed, the tightness around it should be checked. If there is a gap, it can be sealed with a sunlight plate or glass glue.

After the installation is completed, check whether there are any tools and sundries left inside the fan, use your hands or toggle the fan blades to check whether there is too tight or rubbing, and whether there are any items that hinder the rotation and no abnormal phenomena, before the test operation can be carried out; If there is abnormal sound or other abnormal phenomena such as fan vibration or "humming" of the motor during operation, it should be stopped for inspection and then turned on after repair.

Summary. In view of the problem of how to turn the ventilation fan is to exhaust the air outward, under normal circumstances, the steering of the ventilation fan should be to exhaust the air outward. If the steering of the ventilator fan is not outward, it can be adjusted by following these steps:

1.First of all, turn on the power supply of the ventilation fan and adjust the steering of the ventilation fan to the direction of outward exhaust; 2.Then, check the bearing of the ventilation fan to ensure that the bearing rotates flexibly; 3.

Finally, check the motor of the ventilation fan to ensure that the motor is running normally to ensure the normal operation of the ventilation fan. In addition, in the installation process of the ventilation fan, it is also necessary to pay attention to the installation position of the ventilation fan to ensure that the installation position of the ventilation fan is correct to ensure the normal operation of the ventilation fan.

In view of the problem of how to turn the ventilation fan is to exhaust the air outward, under normal circumstances, the steering of the ventilation fan should be to exhaust the air outward. If the steering of the ventilation fan group is not outward, it can be adjusted by the following steps:1

First of all, turn on the power supply of the ventilation fan and adjust the steering of the ventilation fan to the direction of outward exhaust; 2.Then, check the bearing of the ventilation fan to ensure that the bearing rotates flexibly; 3.Finally, check the motor of the ventilation fan to ensure the normal operation of the motor to ensure the normal operation of the ventilation fan.

In addition, in the installation process of the ventilation fan, it is also necessary to pay attention to the installation position of the ventilation fan to ensure that the installation position of the ventilation fan is correct to ensure the normal operation of the ventilation fan.

Can you tell us more about that?

In response to the problem, the turning of the ventilation fan is generally to exhaust the air outward, that is, to exhaust the air from the room to the outside to keep the indoor air fresh. Expand some related content: the steering of the ventilation fan can be different according to the different indoor environment, if the indoor air is dirty, the ventilation fan can be turned to exhaust inward, so as to discharge the indoor dirty air out of the air; If the indoor air is relatively fresh, the ventilation fan can be turned to exhaust outwards to bring fresh air from the outside into the room.

In addition, the steering of the ventilation fan can also be different according to the season, such as in summer, the ventilation fan can be turned to the outward exhaust to exhaust the indoor hot air outdoor; In winter, the ventilation fan can be turned to exhaust inwards to bring warm air from the outside into the room. In short, the direction of ventilation fan is generally to exhaust outward, but it can also vary according to the different indoor environment to ensure the freshness of indoor air and the suitability of temperature.