Cooling fan with I-shaped shunting noise reduction structure

Abstract

The utility model relates to the technical field of cooling fans, in particular to a cooling fan with an I-shaped shunting noise reduction structure, which comprises a cooling fan shell, an air inlet is arranged at the top of the cooling fan shell, an air outlet is arranged on one side of the cooling fan shell, and a plurality of shunting grooves are fixedly connected to two sides of the inner wall of the air outlet. And heat dissipation fan blades are arranged in the heat dissipation fan shell. Compared with the prior art, the air outlet structure has the advantages that the I-shaped flow dividing grooves are formed in the two sides of the air outlet, so that disordered air volume originally concentrated at the air outlet is effectively divided, noise is reduced, and the situation that wind sound is sharp due to the fact that the air outlet is single in shape and straight is relieved; and meanwhile, the I-shaped diversion grooves are arc-shaped, so that the effective stroke (buffer area) of the air outlet can be increased, the wind sound is softer, the effects of improving the tone quality and reducing the wind noise are achieved, the contact surface between the airflow and the diversion grooves can be increased by setting the diversion grooves to be arc-shaped, and the airflow is subjected to sufficient noise reduction and buffer treatment.

Description

Technical Field

[0001] This utility model relates to the field of cooling fan technology, and in particular to a cooling fan with an I-type flow splitting and noise reduction structure. Background Technology

[0002] Vehicle cooling fans are important components used for cooling and heat dissipation in automobiles. They are mainly installed between the engine and the radiator, and generate high-speed airflow to remove heat from the coolant in the radiator, thereby cooling the engine. With the rapid development of automobiles, people have higher and higher requirements for the comfort of car use and the safety of the environment and products. When existing car seat cooling fans are turned on, the airflow is concentrated at the air outlet, and the air outlet is of a single and straight shape, resulting in high wind speed, loud and sharp wind noise. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a cooling fan with an I-type flow splitting and noise reduction structure, which effectively solves the deficiencies of the prior art.

[0004] The purpose of this utility model is achieved through the following technical solution: a cooling fan with an I-shaped flow-diversion and noise reduction structure, including a cooling fan housing, an air inlet on the top of the cooling fan housing, an air outlet on one side of the cooling fan housing, several flow-diversion grooves fixedly connected to both sides of the inner wall of the air outlet, cooling fan blades arranged inside the cooling fan housing, the cross-sectional shape of the flow-diversion groove is I-shaped, the direction of the flow-diversion groove is consistent with the direction of the air outlet, and the positions and directions of the flow-diversion grooves on both sides are symmetrical to each other.

[0005] The above technical solution is adopted: by setting I-shaped diversion grooves on both sides of the air outlet, the originally chaotic air volume concentrated at the air outlet is effectively diverted and noise is reduced, thereby alleviating the situation that the wind noise is relatively sharp due to the single and straight shape of the air outlet. At the same time, the arc shape of the I-shaped diversion groove can increase the effective travel (buffer zone) of the air outlet, making the wind noise softer, thereby achieving the effect of improving sound quality and reducing wind noise.

[0006] Optionally, the diversion channel is arc-shaped, and the limiting structure on both sides of the diversion channel is made of soft silicone.

[0007] The above technical solution is adopted: by setting the diversion channel to an arc shape, the contact surface between the airflow and the diversion channel can be increased, and the airflow travel can be increased, so as to fully reduce the noise and buffer the airflow. The two sides of the diversion channel are made of soft silicone material, which gives it strong toughness and corrosion resistance and can withstand the impact of airflow for a long time.

[0008] Optionally, a dustproof net is provided inside the air inlet, and several support frames are fixedly connected to the outside of the air inlet. The support frames are made of aluminum alloy.

[0009] Optionally, the cooling fan blades are driven by a DC motor, which is equipped with a PWM speed control module, an overvoltage protection module, and a short-circuit overcurrent protection module.

[0010] By adopting the above technical solution, a PWM module can be set on the circuit board of the drive motor to directly control the power supply time of the motor, keep the motor running in the high-efficiency range, and maintain a high energy efficiency ratio even at low speed, thereby achieving energy saving and consumption reduction. The addition of overvoltage protection module and short-circuit protection module can prevent the power supply voltage in the circuit from exceeding the rated voltage range of the fan or short-circuit faults from causing damage to the equipment and system, making the product safer.

[0011] This utility model has the following advantages:

[0012] 1. This cooling fan with an I-shaped flow diversion and noise reduction structure effectively diverts and reduces the chaotic airflow that was originally concentrated at the air outlet by setting I-shaped flow diversion slots on both sides of the air outlet. This alleviates the problem of sharp wind noise caused by the single and straight shape of the air outlet. At the same time, the arc shape of the I-shaped flow diversion slot can increase the effective travel (buffer zone) of the air outlet, making the wind noise softer, thereby improving sound quality and reducing wind noise.

[0013] 2. This cooling fan with an I-shaped flow diversion and noise reduction structure increases the contact area between the airflow and the flow diversion channel by setting the flow diversion channel to an arc shape, and increases the airflow travel, thus providing sufficient noise reduction and buffering treatment for the airflow. The two sides of the flow diversion channel are made of soft silicone material, which gives it strong toughness and corrosion resistance, and can withstand the impact of airflow for a long time.

[0014] 3. This cooling fan with an I-type shunt noise reduction structure can directly control the power supply time of the motor by setting a PWM module on the circuit board of the drive motor, keeping the motor running in the high-efficiency range. Even at low speeds, it can maintain a high energy efficiency ratio, thereby achieving energy saving and consumption reduction. The addition of overvoltage protection module and short-circuit protection module can prevent the power supply voltage in the circuit from exceeding the rated voltage range of the fan or short-circuit faults from causing damage to the equipment and system, making the product safer. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model in its disassembled state;

[0017] Figure 3 This is a side view of the structure of this utility model;

[0018] Figure 4This is a schematic diagram of the rear view structure of this utility model;

[0019] Figure 5 This is a circuit diagram of the 16V overvoltage protection and short circuit protection of this utility model;

[0020] Figure 6 This is a circuit diagram of the 32V overvoltage protection and short circuit protection of this utility model.

[0021] In the diagram: 1-Cooling fan housing, 2-Air inlet, 3-Air outlet, 4-Diffusion slot, 5-Cooling fan blades, 6-Support frame. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0023] like Figures 1 to 4 As shown, a cooling fan with a type I flow splitting and noise reduction structure includes a cooling fan housing 1, an air inlet 2 on the top of the cooling fan housing 1, an air outlet 3 on one side of the cooling fan housing 1, several flow splitting grooves 4 fixedly connected to both sides of the inner wall of the air outlet 3, and cooling fan blades 5 arranged inside the cooling fan housing 1.

[0024] Example 1: The cross-sectional shape of the diversion channel 4 is I-shaped. The direction of the diversion channel 4 is consistent with the direction of the air outlet 3. The positions and directions of the diversion channels 4 on both sides are symmetrical. By setting I-shaped diversion channels 4 on both sides of the air outlet 2, the chaotic air volume originally concentrated in the air outlet 3 is effectively diverted and noise is reduced, thereby alleviating the situation where the air outlet 3 is relatively sharp due to its single and straight shape. At the same time, since the I-shaped diversion channel is arc-shaped, it can increase the effective stroke (buffer zone) of the air outlet, making the air sound softer, thereby achieving the effect of improving sound quality and reducing wind noise.

[0025] Example 2: The diversion channel 4 is arc-shaped, and the limiting structure on both sides of the diversion channel 4 is made of soft silicone. By setting the diversion channel 4 to an arc shape, the contact surface between the airflow and the diversion channel 4 can be increased, and the airflow travel can be increased, so as to fully reduce noise and buffer the airflow. The two sides of the diversion channel 4 are made of soft silicone, which makes it have strong toughness and corrosion resistance, and can withstand the impact of airflow for a long time.

[0026] Example 3: The air inlet 2 is equipped with a dustproof net inside, and several support frames 6 are fixedly connected to the outside of the air inlet 2. The support frames 6 are made of aluminum alloy.

[0027] Example 4: The cooling fan blade 5 is driven by a DC motor. The DC motor is equipped with a PWM speed control module, an overvoltage protection module, and a short-circuit and overcurrent protection module. By setting the PWM module on the circuit board of the drive motor, the power supply time of the motor can be directly controlled to keep the motor running in the high-efficiency range. Even at low speed, it can maintain a high energy efficiency ratio, thereby achieving energy saving and consumption reduction. The addition of the overvoltage protection module and the short-circuit protection module can prevent the power supply voltage in the circuit from exceeding the rated voltage range of the fan or short-circuit faults from causing damage to the equipment and system, making the product safer.

[0028] The working principle of this utility model is as follows:

[0029] S1. I-shaped diversion grooves 4 are set on both sides of the air outlet 2 to effectively divert and reduce the chaotic air volume that was originally concentrated in the air outlet 3. This alleviates the situation where the wind noise is relatively sharp due to the single and straight shape of the air outlet 3. At the same time, the arc shape of the I-shaped diversion groove can increase the effective travel (buffer zone) of the air outlet, making the wind noise softer, thereby improving the sound quality and reducing wind noise.

[0030] S2. Setting the flow divider 4 as an arc shape can increase the contact surface between the airflow and the flow divider 4, and increase the airflow travel, so as to fully reduce noise and buffer the airflow. The two sides of the flow divider 4 are made of soft silicone material, which makes it have strong toughness and corrosion resistance, and can withstand the impact of airflow for a long time.

[0031] Compared with the prior art, the present invention has the following advantages:

[0032] 1. The cooling fan with the I-shaped flow diversion and noise reduction structure effectively diverts and reduces the chaotic airflow that was originally concentrated at the air outlet 3 by setting I-shaped flow diversion grooves 4 on both sides of the air outlet 2. This alleviates the situation where the air outlet 3 has a single and straight shape, resulting in a relatively sharp wind noise. At the same time, the arc shape of the I-shaped flow diversion groove can increase the effective travel (buffer zone) of the air outlet, making the wind noise softer, thereby improving the sound quality and reducing wind noise.

[0033] 2. The cooling fan with the I-type flow diversion and noise reduction structure increases the contact area between the airflow and the flow diversion groove 4 by setting the flow diversion groove 4 in an arc shape, and increases the airflow travel, thus providing sufficient noise reduction and buffering treatment for the airflow. The two sides of the flow diversion groove 4 are made of soft silicone material, which gives it strong toughness and corrosion resistance, and can withstand the impact of airflow for a long time.

[0034] 3. This cooling fan with an I-type shunt noise reduction structure can directly control the power supply time of the motor by setting a PWM module on the circuit board of the drive motor, keeping the motor running in the high-efficiency range. Even at low speeds, it can maintain a high energy efficiency ratio, thereby achieving energy saving and consumption reduction. The addition of overvoltage protection module and short-circuit protection module can prevent the power supply voltage in the circuit from exceeding the rated voltage range of the fan or short-circuit faults from causing damage to the equipment and system, making the product safer.

Claims

1. A cooling fan with a type I flow splitting and noise reduction structure, characterized in that: The device includes a cooling fan housing (1), with an air inlet (2) on the top and an air outlet (3) on one side. Several diversion grooves (4) are fixedly connected to both sides of the inner wall of the air outlet (3). Cooling fan blades (5) are provided inside the cooling fan housing (1). The cross-sectional shape of the diversion groove (4) is I-shaped. The direction of the diversion groove (4) is consistent with the direction of the air outlet (3). The positions and directions of the diversion grooves (4) on both sides are symmetrical.

2. A cooling fan with a type I flow splitting and noise reduction structure according to claim 1, characterized in that: The diversion channel (4) is arc-shaped, and the limiting structure on both sides of the diversion channel (4) is made of soft silicone.

3. A cooling fan with a type I flow splitting and noise reduction structure according to claim 2, characterized in that: The air inlet (2) is equipped with a dustproof net inside, and several support frames (6) are fixedly connected to the outside of the air inlet (2). The support frames (6) are made of aluminum alloy.

4. A cooling fan with a type I flow splitting and noise reduction structure according to claim 3, characterized in that: The heat dissipation fan blades (5) are driven by a DC motor, which is equipped with a PWM speed control module, an overvoltage protection module and a short-circuit overcurrent protection module.

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