How to install the cooling fan in the case, exhaust or supply air? 5

To install a case fan, you need to look at the airflow.

Distribution of heat sources within the chassis.

Generally, the case fan is installed at the front of the case, which draws cold air from the front and blows it into the top of the motherboard, and finally the power supply fan discharges it to form convection. It is best to consider the direction of air flow, and the best solution is to install a fan in the front and rear, distributed diagonally, and then the whole case will have a good cooling effect. The front fan of the case blows on the inside, and the rear fan blows on the outside.

Convection CPU, graphics card, hard disk, optical drive, north bridge, south bridge and other chips on the board are heating the air in the chassis at all times, and if these hot gases are not discharged out of the box, it will seriously affect the heat dissipation of each component and affect the service life of the computer. The measured results show that the temperature in the case is 5 10 lower than that in the case without the case fan, which can significantly improve the working environment of the accessories and electrical components in the box.

Airflow comparison chart.

Generally, there are always two places in the chassis where fans can be installed, the front one is generally at the hard disk bay, and the back one is generally under the power supply and above the keyboard port. The higher-priced case is already equipped with 1 or 2 fans from the factory. When installing a case fan, the principle of air flow should be followed.

If the installed fan goes forward and comes out, the internal air path of the case is very regular from front to back; If the fan installation is reversed, with the rear in and front out or the rear in and forward, the air path will be chaotic because the power supply fan is also outlet. When you install only one case fan, it depends on whether you're cooling the hard drive or the entire machine, depending on your cooling needs. Many cases send fans from the factory to the rear fan position by default, and they are exhaustive, which does make sense.

The back of the exhaust air,Side or front to the inside of the air,It is recommended that the landlord install a fan in the chassis optical drive to supply air inside,Try not to install a fan on the side of the chassis,Because the fan is too close to the motherboard, it will cause excessive noise,Mine is the back of the exhaust,The fan of the optical drive is equipped with a temperature control switch,This is more convenient,When the temperature of the chassis reaches 40C, the front air fan will work,There is also a hard disk It is also best to add a fan,After all, the weather is too hot now,Mine is so much hope that it will be useful to the landlord, typing is not easy to hope for the landlord.

1. Air inlet direction:

2. Direction of air outlet:

1. Use your hands to induct the fan. If there is wind outside the case, it is the outlet, and if it feels like there is suction, it is the inlet air.

2. Don't look at the place where there is no fan, generally the place without a fan is the air intake.

3. Then look at the fan mark, there is an arrow on the fan, the arrow points outward, which is blowing, and pointing inward, which is suction and air intake.

The side fans of the case blow inward.

The fans on the front and side panels of the case blow air into the case.

The fans on the top and rear of the case are exhausting to the outside.

The purpose of this is to maintain a better air duct, increase the heat dissipation effect, and ensure that the hot air can be quickly removed, if the side and rear fans are pumping outward, then convection cannot be formed, so the sides of the case are blowing inward.

The fans on the front and side panels of the case blow air into the case. The fans on the top and rear of the case are exhausting to the outside. The case fan can only play an auxiliary role in the heat dissipation of the CPU and graphics card, and it mainly depends on the heat sink of the CPU and graphics card.

This answer applies to most brands of computers such as Dell, Lenovo, HP, etc.

The fan has an arrow-shaped logo on the bezel, and it points in the direction of the wind.

In addition, there are wires or wiring ducts on one side of the fan, and there will be a fan specification (generally 12V XXMA) in the middle of this side, which faces the inside of the chassis when installed.

Outward, blow the wind outwards and blow the hot air outward.

The fan at the back of the case should be used for exhausting air from the case, and the fan at the front should be blowing air into the case.

1. Installation: The side panel with holes saw that the wind of the 4 jacks was blowing inward, and the back of the 2 jacks (that is, on the hardware plate behind the chassis) was pumping outward.

2. Wiring: 4 jacks are directly plugged into the power supply, 2 jacks are directly plugged into the power supply if they are also large plugs, and they are connected to the motherboard if they are small.

The specific steps to solve the installation direction of the computer case fan are as follows:

1. First of all, the case fan is installed in the yellow circle in the figure below, the fan is installed on the inside of the case, and the fan logo is facing the inside of the case.

2. The picture below is the front face of the case fan, the suction surface, which can also be said to be the "trademark side", which should be installed inside the case.

3. The picture below shows the dust band on the back of the case fan, which is the air outlet side, and this side should be installed facing the outside.

4. As shown in the figure below, the air effect of the chassis inlet and outlet after successful installation.

1.First, determine the "front and rear" of the fan. The side blocked by the four ribs is the back of the case fan, the side of the air outlet, and this side faces the outside of the case.

2.The front side of the case fan, the suction side or "label side," is mounted inside the case.

3. The installation position of the case fan is behind the case, and the CPU cooling fan should be careful not to make a mistake when installing.

4.Make sure that the fan is reversed, place it in the corresponding position on the back of the case, and tighten the corresponding screws.