Centrifugal fan with flow channel secondary pressurization structure

Abstract

The utility model discloses a centrifugal fan with flow channel secondary pressurization structure, including shell, secondary pressurization structure, the secondary pressurization structure is close to shell inner wall, the secondary pressurization structure is along the airflow direction thickness increasing. The utility model's technical effect and advantage: 1, through the secondary pressurization structure before the inner blowing outlet, increase the air volume after the original pressure relief, make the secondary pressurization blow into the system chip. This design into the system test can effectively reduce the chip operating temperature, promote system air flow. 2, increase the pressure of inner blowing flow channel, the air volume of inner blowing outlet; effectively reduce the operating temperature of the chip in the system; about can promote 5%~10% air volume, 5% static pressure value.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal fan flow channel technology, and more specifically to a centrifugal fan with a flow channel secondary pressurization structure. Background Technology

[0002] In recent years, there have been many designs for internal blowing fan structures in laptops, but problems such as excessive chip temperature or insufficient airflow still occur. Research usually focuses on adjusting the inlet and outlet angles of the blades, but no effective direction has been achieved.

[0003] Modern laptops are high-performance and high-power, resulting in relatively high chip temperatures. This requires fans to provide greater performance for heat dissipation, necessitating fan designs that deliver more airflow to the chip. However, with traditional airflow designs, the amount of airflow directed to the chip is minimal. Airflow can only be increased through blades or motor speed, which can lead to increased noise. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the existing technology, meet the current market demand, reduce chip temperature, improve the heat dissipation efficiency of the fan, and maintain the original noise level of the fan, this utility model provides a centrifugal fan with a secondary pressurization structure in the flow channel.

[0005] The technical solution of this utility model is as follows: A centrifugal fan with a secondary pressurization structure for the flow channel includes a housing and a secondary pressurization structure, wherein the secondary pressurization structure is in close contact with the inner wall of the housing and the thickness of the secondary pressurization structure increases along the airflow direction.

[0006] The back of the secondary pressurization structure is an arc surface, which is attached and fixed to the inner wall of the outer shell; the front surface of the secondary pressurization structure is an arc surface, and the distance between the arc surface and the inner wall of the outer shell increases along the airflow direction.

[0007] Along the airflow direction, the air inlet of the outer shell is set with a tongue-shaped pressurization zone, followed by a shallow pressurization zone, a secondary pressurization zone, an internal air outlet, and a main air outlet.

[0008] The secondary pressurization structure is located in the secondary pressurization zone.

[0009] The thickness of the inner wall of the outer shell decreases from the pressure zone at the tongue tip to the shallow pressure zone.

[0010] A motor is fixedly mounted on the outer casing, and fan blades are mounted on the motor.

[0011] The technical effects and advantages of this utility model are as follows: 1. By using a secondary pressurization structure before the internal air outlet, the airflow after initial depressurization is increased, allowing the air to be blown into the chip within the system after secondary pressurization. This design, when implemented in system testing, can effectively reduce chip operating temperature and increase system airflow.

[0012] 2. Increase the pressure of the internal blowing channel and the air volume of the internal blowing outlet; effectively reduce the operating temperature of the chip in the system; and can increase the air volume by about 5%~10% and the static pressure value by 5%. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the internal structure of a centrifugal fan; Figure 2 This is a schematic diagram of the overall structure of the centrifugal fan; Figure 3 This is a schematic diagram of a secondary pressurization structure. Detailed Implementation

[0014] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Example

[0015] like Figures 1-3 The centrifugal fan shown includes a casing 1 and a secondary pressurization structure 2. The secondary pressurization structure 2 is closely attached to the inner wall of the casing 1, and the thickness of the secondary pressurization structure increases along the airflow direction.

[0016] Furthermore, the back of the secondary pressurization structure 2 is an arc surface 21, which is attached to and fixed to the inner wall of the outer shell; the front surface of the secondary pressurization structure is an arc surface 22, and the distance between the arc surface 22 and the inner wall of the outer shell increases along the airflow direction.

[0017] Furthermore, along the airflow direction, the air inlet of the outer casing 1 is provided with a tongue-end pressurization zone 11, followed by a shallow pressure zone 12, a secondary pressurization zone 13, an internal air outlet 14, and a main air outlet 15.

[0018] Furthermore, the secondary pressurization structure 2 is located in the secondary pressurization zone 13.

[0019] Furthermore, the thickness of the inner wall of the outer shell decreases from the tongue-tip pressure area to the shallow pressure area.

[0020] Furthermore, a motor 3 is fixedly installed on the outer casing 1, and a fan blade 4 is installed on the motor. Example

[0021] By using a secondary pressurization structure before the internal air outlet, the airflow after initial depressurization is increased, allowing the air to be blown into the chip within the system after secondary pressurization. Testing has shown that this effectively reduces chip operating temperature and increases system airflow.

[0022] Benefit assessment: 1. Increase the pressure in the internal blowing channel and the air volume at the internal blowing outlet; 2. Effectively reduces the operating temperature of chips within the system; 3. It can increase air volume by approximately 5% to 10% and static pressure by approximately 5%.

[0023] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A centrifugal fan with a secondary pressurization structure in the flow channel, characterized in that: It includes an outer shell and a secondary pressurization structure, wherein the secondary pressurization structure is closely attached to the inner wall of the outer shell and the thickness of the secondary pressurization structure increases along the airflow direction.

2. A centrifugal fan with a secondary pressurization structure in the flow channel according to claim 1, characterized in that: The back of the secondary pressurization structure is an arc surface, which is attached and fixed to the inner wall of the outer shell; the front surface of the secondary pressurization structure is an arc surface, and the distance between the arc surface and the inner wall of the outer shell increases along the airflow direction.

3. A centrifugal fan with a secondary pressurization structure in the flow channel according to claim 1, characterized in that: Along the airflow direction, the air inlet of the outer shell is set with a tongue-shaped pressurization zone, followed by a shallow pressurization zone, a secondary pressurization zone, an internal air outlet, and a main air outlet.

4. A centrifugal fan with a secondary pressurization structure in the flow channel according to claim 3, characterized in that: The secondary pressurization structure is located in the secondary pressurization zone.

5. A centrifugal fan with a secondary pressurization structure in the flow channel according to claim 3, characterized in that: The thickness of the inner wall of the outer shell decreases from the pressure zone at the tongue tip to the shallow pressure zone.

6. A centrifugal fan with a secondary pressurization structure in the flow channel according to claim 1, characterized in that: A motor is fixedly mounted on the outer casing, and fan blades are mounted on the motor.

Images