Fan with V-shaped drainage noise reduction structure

Abstract

The fan of the V-shaped drainage noise reduction structure comprises an upper cover and a lower cover, the lower portion of the upper cover is detachably connected with the lower cover through a connecting piece, an air inlet is formed in the center of the upper cover, and the side faces of the upper cover and the lower cover are fixedly connected with air outlets. A plurality of V-shaped drainage grooves are formed in the transverse face of the inner wall of the air outlet. The utility model has the advantages that the design of the V-shaped drainage groove can guide air flow to pass through the air outlet more stably, and the noise caused by turbulence of the air flow is reduced. Turbulent flow is one of the main sources of wind noise, and the noise of the part can be remarkably reduced by optimizing an airflow path. The V-shaped design of the drainage groove is favorable for dispersing wind pressure, so that wind cannot be excessively concentrated when passing through the air outlet, noise generated by overlarge wind pressure is reduced, and the wind can take away heat on the surface of the seat more effectively by optimizing an airflow path. Therefore, the heat dissipation efficiency is improved to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seat cooling fans, in particular to a fan with a V-shaped drainage and noise reduction structure. Background Art

[0002] With the rapid development of automobiles, people's demands for vehicle comfort, environmental friendliness, and safety are becoming increasingly stringent. Existing requirements for seat cooling fans, such as efficiency, noise, overvoltage protection, and overcurrent short-circuit protection, no longer meet these demands. When the fan is turned on, the concentrated airflow at the outlet creates a high level of wind noise, significantly disturbing the driver.

[0003] Compared with existing seat cooling fans, this cooling fan adds V-shaped drainage grooves on the upper and lower cover air outlets to effectively drain the originally concentrated and chaotic air volume, thereby achieving the effect of reducing wind noise. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0005] Therefore, one purpose of the present invention is to provide a fan with a V-shaped drainage and noise reduction structure to solve the problems mentioned in the background technology and overcome the shortcomings of the existing technology.

[0006] To achieve the above-mentioned object, an embodiment of one aspect of the present invention provides a fan with a V-shaped drainage and noise reduction structure, comprising an upper cover and a lower cover, wherein the lower cover is detachably connected to the upper cover via a connecting member, and an air inlet is provided at the center of the upper cover;

[0007] The sides of the upper cover and the lower cover are fixedly connected with an air outlet, and the lateral surface of the inner wall of the air outlet is provided with a plurality of V-shaped drainage grooves, and the tips of the V-shaped drainage grooves face the interior of the upper cover and the lower cover;

[0008] A motor is installed inside the lower cover, and a plurality of fan blades are fixedly connected to the output end of the motor.

[0009] Preferably, any of the above solutions has a plurality of screw barrels fixedly connected to the corners of the upper cover and the lower cover, and screws are installed inside the screw barrels to achieve the fastening of the upper cover and the lower cover.

[0010] Using the above technical solution: This fan, specifically a car seat fan, features blades designed to simulate optimized performance. The upper and lower covers are constructed of rigid, non-deformable materials, such as ABS engineering plastic, to ensure fan strength. Furthermore, V-shaped drainage grooves are added to the air outlets of the upper and lower covers to reduce wind noise. This design ensures that air flows along the V-shaped drainage grooves as it passes through the outlet, creating a more orderly airflow path.

[0011] The V-shaped guide groove design guides airflow more smoothly through the air outlet, reducing noise caused by turbulent airflow. Turbulence is one of the main sources of wind noise, and by optimizing the airflow path, this noise can be significantly reduced. The V-shaped design of the guide groove helps disperse wind pressure, preventing excessive wind concentration as it passes through the air outlet, thereby reducing the noise caused by excessive wind pressure.

[0012] By optimizing the airflow path, the wind can more effectively remove the heat from the seat surface, thereby improving the heat dissipation efficiency to a certain extent.

[0013] Preferably, in any of the above solutions, the connecting member is a buckle.

[0014] Preferably, any of the above solutions is provided with a rib net with an arched middle portion at the air inlet.

[0015] Preferably, any of the above solutions has a length of the V-shaped drainage groove that gradually increases.

[0016] Using the above technical solution: This fan is compact and can be installed inside the seat using screws at multiple locations. When it is in operation, the motor drives the fan blades to rotate at high speed, sucking air in through the air inlet and discharging it through the air outlet. This allows air to flow quickly across the seat surface, achieving the purpose of heat dissipation.

[0017] Preferably, the motor is a DC motor and has a PWM speed regulation function. The motor has added overvoltage protection and short-circuit overcurrent protection. A voltage detection circuit is integrated into the motor, which can monitor the power supply voltage in real time. When the power supply voltage exceeds the set safety threshold, the detection circuit will send a signal. After receiving the overvoltage signal, the protection actuator (such as a transistor) will quickly cut off the power supply to the motor, thereby preventing the motor from being damaged by overvoltage.

[0018] The motor has an overload and short-circuit protection circuit inside, which will respond quickly when the current is too large and limit the current by changing the resistance value or cutting off the circuit, thereby protecting the motor from damage.

[0019] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows:

[0020] 1. This fan, specifically designed for car seat fans, features a V-shaped drainage and noise reduction structure. The fan blades are designed to simulate optimized performance. The upper and lower covers are constructed of rigid, non-deformable materials, such as ABS engineering plastic, to ensure fan strength. Furthermore, V-shaped drainage grooves are added to the air outlets to reduce wind noise. This design allows air to flow along the V-shaped drainage grooves as it passes through the outlet, creating a more orderly airflow path.

[0021] The V-shaped guide groove design guides airflow more smoothly through the air outlet, reducing noise caused by turbulent airflow. Turbulence is one of the main sources of wind noise, and by optimizing the airflow path, this noise can be significantly reduced. The V-shaped design of the guide groove helps disperse wind pressure, preventing excessive wind concentration as it passes through the air outlet, thereby reducing the noise caused by excessive wind pressure.

[0022] By optimizing the airflow path, the wind can more effectively remove the heat from the seat surface, thereby improving the heat dissipation efficiency to a certain extent.

[0023] 2. The fan with V-shaped drainage and noise reduction structure also adds overvoltage protection and short-circuit protection functions on the motor drive circuit board, making the product safer.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 It is a structural diagram of the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the upper and lower covers of the utility model;

[0028] Figure 3 This is a front view structural diagram of the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the utility model from a top view;

[0030] Figure 5 This is a schematic diagram of the structure of the bottom view of the utility model;

[0031] Figure 6 These are two schemes of overvoltage protection and short-circuit protection circuits in the utility model.

[0032] In the figure: 1-upper cover, 2-lower cover, 3-connecting piece, 4-air inlet, 5-air outlet, 6-V-shaped drainage groove, 7-motor, 8-fan blades. DETAILED DESCRIPTION

[0033] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0034] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0035] like Figure 1-6 As shown, the fan with the V-shaped drainage and noise reduction structure comprises an upper cover 1 and a lower cover 2. The lower cover 2 is detachably connected to the upper cover 1 via a connector 3. An air inlet 4 is provided at the center of the upper cover 1.

[0036] The sides of the upper cover 1 and the lower cover 2 are fixedly connected with an air outlet 5. The lateral surface of the inner wall of the air outlet 5 is provided with a plurality of V-shaped drainage grooves 6, and the tip of the V-shaped drainage grooves 6 faces the interior of the upper cover 1 and the lower cover 2;

[0037] A motor 7 is installed inside the lower cover 2 , and a plurality of fan blades 8 are fixedly connected to the output end of the motor 7 .

[0038] Example 1: Several screw barrels are fixedly connected at the corners of the upper and lower covers 1 and 2, and screws are installed inside these barrels to secure the upper and lower covers 1 and 2. The connector 3 is specifically a snap fastener. A ribbed mesh with a raised center is installed at the air inlet 4. The length of the V-shaped drainage groove 6 gradually increases.

[0039] The function of the V-shaped guide groove 6 is to enable the wind to flow along the guiding direction of the V-shaped guide groove 6 when passing through the air outlet 5, thereby forming a more orderly airflow path.

[0040] The V-shaped guide groove 6 guides airflow more smoothly through the outlet, reducing noise caused by turbulent airflow. Turbulence is a major source of wind noise, and optimizing the airflow path significantly reduces this noise. The V-shaped design of the guide groove helps disperse wind pressure, preventing excessive wind concentration as it passes through the outlet, thereby reducing noise caused by excessive wind pressure.

[0041] By optimizing the airflow path, the wind can more effectively remove the heat from the seat surface, thereby improving the heat dissipation efficiency to a certain extent.

[0042] Example 2: Motor 7 is specifically a DC motor and has a PWM speed regulation function. Motor 7 has added overvoltage protection and short-circuit overcurrent protection. A voltage detection circuit is integrated into the motor 7, which can monitor the power supply voltage in real time. When the power supply voltage exceeds the set safety threshold, the detection circuit will send a signal. After receiving the overvoltage signal, the protection actuator (such as a transistor) will quickly cut off the power supply to the motor 7, thereby preventing the motor 7 from being damaged by overvoltage.

[0043] The motor 7 has an overload short-circuit protection circuit inside, which will respond quickly when the current is too large, and limit the current by changing the resistance value or cutting off the circuit, thereby protecting the motor 7 from damage.

[0044] The working principle of this utility model is as follows:

[0045] The fan is compact and can be installed inside the seat by screws at multiple points. When it is working, the motor 7 drives the fan blades 8 to rotate at high speed, sucking air from the air inlet 4 and discharging air from the air outlet 5, so that the air flows quickly through the seat surface to achieve the purpose of heat dissipation.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] 1. This fan with a V-shaped drainage and noise reduction structure is specifically designed for car seat fans. The fan blades 8 utilize a blade design that simulates optimized performance. The upper and lower covers are constructed of rigid, non-deformable materials, such as ABS engineering plastic, to ensure fan strength. Furthermore, V-shaped drainage grooves 6 are added to the air outlets 5 of the upper and lower covers to reduce wind noise. This design ensures that air flows along the V-shaped drainage grooves 6 as it passes through the air outlet 5, forming a more orderly airflow path.

[0048] The V-shaped guide groove 6 guides airflow more smoothly through the outlet, reducing noise caused by turbulent airflow. Turbulence is a major source of wind noise, and optimizing the airflow path significantly reduces this noise. The V-shaped design of the guide groove helps disperse wind pressure, preventing excessive wind concentration as it passes through the outlet, thereby reducing noise caused by excessive wind pressure.

[0049] By optimizing the airflow path, the wind can more effectively remove the heat from the seat surface, thereby improving the heat dissipation efficiency to a certain extent.

[0050] 2. The fan with the V-shaped drainage and noise reduction structure also adds overvoltage protection and short-circuit protection functions on the driving circuit board of the motor 7, making the product safer.

Claims

1. A fan with a V-shaped drainage and noise reduction structure, characterized in that: The utility model comprises an upper cover (1) and a lower cover (2), wherein the lower cover (2) is detachably connected to the upper cover (1) through a connecting piece (3), and an air inlet (4) is provided at the center of the upper cover (1); an air outlet (5) is fixedly connected to the side surfaces of the upper cover (1) and the lower cover (2), and a plurality of V-shaped drainage grooves (6) are provided on the transverse surface of the inner wall of the air outlet (5), and the tip of the V-shaped drainage grooves (6) faces the interior of the upper cover (1) and the lower cover (2); A motor (7) is installed inside the lower cover (2), and a plurality of fan blades (8) are fixedly connected to the output end of the motor (7).

2. The fan with a V-shaped drainage and noise reduction structure according to claim 1, characterized in that: Several screw barrels are fixedly connected at the corners of the upper cover (1) and the lower cover (2), and screws are installed inside the barrels to achieve the fastening of the upper cover (1) and the lower cover (2).

3. The fan with a V-shaped drainage and noise reduction structure according to claim 2, characterized in that: The connecting piece (3) is specifically a buckle.

4. The fan with a V-shaped drainage and noise reduction structure according to claim 3, characterized in that: The air inlet (4) is provided with a rib net with an arched middle portion.

5. The fan with a V-shaped drainage and noise reduction structure according to claim 4, characterized in that: The length of the V-shaped drainage groove (6) increases gradually.

6. The fan with a V-shaped drainage and noise reduction structure according to claim 5, characterized in that: The motor (7) is specifically a DC motor and has a PWM speed regulation function.

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