Adjustable CPU cooling fan

Abstract

The utility model discloses an adjustable CPU cooling fan belongs to the technical field of heat dissipation device, including the bottom plate, the circumferential side wall of bottom plate is connected with the casing on screw thread, the adjusting board cover is located on the heat dissipation hole, the inner wall fixed connection of corresponding casing has the support plate on the adjusting board top, the top fixed mounting of support plate has the motor, the output of motor bushing fixedly has the gear, the gear can drive adjusting board and slide along the heat dissipation hole, the top inboard fixed mounting of casing has the cooling fan body, the top positioning installation of casing has the filter screen board, the utility model discloses realize convenient to dismount maintenance, replace, flexible operation's function, make adjusting board rotary slide regulation ventilation area, has saved the occupied space inside the case, is convenient for flexible regulation fan rotating speed and heat dissipation hole opening degree, balance heat dissipation efficiency and energy consumption noise, has improved use efficiency, and the technical effect that adaptability is strong.

Description

Technical Field

[0001] This utility model belongs to the field of heat dissipation device technology, and in particular relates to an adjustable CPU cooling fan. Background Technology

[0002] Computers are widely used in various industries and fields. Computers are controlled by CPUs. When the CPU runs continuously for a long time, it will generate a lot of heat, which will affect the performance of the computer. Therefore, most computers are equipped with CPU fans. Ordinary CPU cooling fans are simply fans installed in the host to ventilate and dissipate heat from the CPU.

[0003] To address this, Chinese patent CN222354371U discloses an adjustable CPU cooling fan, including a protective cover with a CPU cooling auxiliary device inside. The CPU cooling auxiliary device includes a cooling component and a ventilation and protection component. The cooling component is installed inside the protective cover. When the CPU is used in winter, it does not need excessive cooling. An electric push rod can drive an upper pull plate to move down. After the upper pull plate moves down, it drives a docking block to move down. After the docking block moves down, the two sets of first and second ventilation slots intersect each other. After the first and second ventilation slots intersect, the side guards and side guards form an intersecting and sealed space, avoiding the need for the device to cool the CPU in winter and greatly reducing the operating cost of the device.

[0004] However, the aforementioned device, with its ventilation and protection components that extend and retract vertically, occupies a significant amount of space inside the computer case and is difficult to disassemble and maintain, thus affecting its efficiency. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides an adjustable CPU cooling fan that is easy to disassemble, maintain, and replace, and offers flexible operation. The adjustable plate allows for rotation and sliding to adjust the ventilation area, saving space inside the computer case. It also facilitates flexible adjustment of fan speed and ventilation hole opening, balancing cooling efficiency with energy consumption and noise, thus improving usability. Furthermore, it boasts strong adaptability and solves the problem in the prior art where the vertical extension and retraction of ventilation and protection components occupies a large amount of space inside the computer case, hindering disassembly and maintenance and affecting usability.

[0006] This utility model is implemented as follows: an adjustable CPU cooling fan includes a base plate, a housing threadedly connected to the circumferential side wall of the base plate, a CPU body fixedly mounted in the middle of the base plate, and ear plates fixedly connected to both ends of the bottom of the base plate. The housing has evenly distributed heat dissipation holes. An adjustment plate is slidably connected to the inner wall of the housing, covering the heat dissipation holes. A support plate is fixedly connected to the inner wall of the housing above the adjustment plate. A motor is fixedly mounted on the top of the support plate, and a gear is sleeved and fixed to the output end of the motor. The gear can drive the adjustment plate to slide along the heat dissipation holes. A cooling fan body is fixedly mounted on the inner top of the housing, and a filter plate is positioned and mounted on the top of the housing.

[0007] As a preferred embodiment of this invention, a temperature sensor is fixedly installed on the inner wall of the housing corresponding to the top of the CPU body, and the temperature sensor, motor and cooling fan body are all electrically connected to the PWM controller on the computer motherboard.

[0008] With this setup, the temperature sensor monitors the CPU's temperature in real time and transmits the signal to the PWM controller. The controller then synchronously adjusts the speed of the cooling fan and the operation of the motor based on the temperature data (driving the adjustment plate to slide and change the opening and closing degree of the heat dissipation holes). When the CPU temperature rises, the fan speed increases and the opening of the heat dissipation holes widens, enhancing heat dissipation efficiency. When the temperature drops, the fan speed is adjusted in the opposite direction to reduce energy consumption and noise, forming a dynamically adapted heat dissipation closed loop, which improves the accuracy and energy efficiency of heat dissipation regulation.

[0009] As a preferred embodiment of this utility model, a limiting slide plate is fixedly connected to the inner wall of the housing below the heat dissipation hole, the bottom of the adjusting plate is slidably connected along the inside of the limiting slide plate, and a rack is fixedly connected to the top inner side of the adjusting plate, with the gear and the rack meshing together.

[0010] This design ensures stable sliding of the adjustment plate. The limiting slide plate supports and guides the bottom of the adjustment plate, preventing it from shifting during sliding. The meshing transmission of the gear and rack facilitates the movement of the adjustment plate, ensuring that the adjustment plate can smoothly and accurately cover and expose the heat dissipation holes, thereby reliably controlling the ventilation area of ​​the heat dissipation holes.

[0011] As a preferred embodiment of this invention, both ends of the rack are fixedly connected with stop blocks.

[0012] This design prevents the adjustment plate from sliding excessively, which could cause the rack to disengage from the gear. It effectively limits the movement of the adjustment plate and makes it easy to use.

[0013] In a preferred embodiment of this utility model, the filter screen is snapped onto the top of the housing, and positioning rods are fixedly connected to both sides of the top of the housing. Positioning plates are slidably sleeved on the positioning rods, and the upper end of the positioning plates is inserted into the interior of the filter screen. A baffle is fixedly connected to the end of the positioning rod, and a spring is fixedly connected between the baffle and the positioning plate. The spring is sleeved on the positioning rod.

[0014] This design enables quick installation and secure fixation of the filter plate. The filter plate is initially positioned by a snap-fit ​​mechanism, and the spring force pushes the positioning plate into the filter plate to form a secondary fixation, ensuring that the filter plate will not loosen or fall off when the fan is running. To remove the filter plate, simply pull the positioning plate to compress the spring, which will release the fixation and allow you to remove the filter plate. This facilitates regular cleaning and filter replacement, prevents dust from clogging the filter and affecting heat dissipation, and makes it easy to install and remove, offering flexibility in use.

[0015] As a preferred embodiment of this utility model, positioning grooves are provided at both ends of the top of the filter screen, and the positioning plate is inserted into the positioning grooves.

[0016] This design provides a precise insertion position for the positioning plate, preventing misalignment between the positioning plate and the filter screen and ensuring a secure installation of the filter screen on the top of the housing.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: The threaded connection between the shell and the base plate facilitates the overall disassembly of the shell, which in turn facilitates the overall disassembly of the entire heat dissipation device. Furthermore, the filter screen plate, through the positioning groove, positioning plate, positioning rod, and spring, allows for quick and easy disassembly, maintenance, and replacement, providing flexible operation and improving efficiency. In addition, the adjustment plate, in conjunction with the heat dissipation holes, and driven by a gear rack and pinion mechanism and guided by a limiting slide plate, can precisely control the ventilation area. The adjustment plate's rotation and sliding adjust the ventilation area, saving space inside the chassis. Furthermore, the temperature sensor and PWM controller work together to dynamically adjust the fan speed and heat dissipation hole opening, balancing heat dissipation efficiency with energy consumption and noise, effectively improving temperature control accuracy, maintenance convenience, and structural stability, and offering strong adaptability. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram provided in an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the right-side cross-sectional structure provided in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the disassembled structure provided in an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the adjustment plate structure provided in an embodiment of the present utility model;

[0022] Figure 5 This is provided by the embodiment of the present utility model. Figure 1 Enlarged structural diagram of the center positioning plate.

[0023] In the diagram: 1. Base plate; 101. Ear plate; 2. Housing; 201. Heat dissipation hole; 202. Limiting slide plate; 203. Support plate; 3. Filter screen plate; 301. Positioning groove; 4. Positioning plate; 401. Positioning rod; 402. Spring; 403. Baffle; 5. Cooling fan body; 6. Adjustment plate; 601. Rack; 602. Stop block; 603. Gear; 604. Motor; 7. Temperature sensor; 8. CPU body. Detailed Implementation

[0024] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0025] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] refer to Figures 1 to 5 As shown in the figure, an adjustable CPU cooling fan provided by this utility model embodiment includes a base plate 1, a housing 2 threadedly connected to the circumferential side wall of the base plate 1, a CPU body 8 fixedly installed in the middle of the base plate 1, and ear plates 101 fixedly connected to both ends of the bottom of the base plate 1. The housing 2 has evenly distributed heat dissipation holes 201. An adjustment plate 6 is slidably connected to the inner wall of the housing 2, and the adjustment plate 6 covers the heat dissipation holes 201. A support plate 203 is fixedly connected to the inner wall of the housing 2 above the adjustment plate 6. A motor 604 is fixedly installed on the top of the support plate 203. A gear 603 is sleeved and fixed at the output end of the motor 604. The gear 603 can drive the adjustment plate 6 to slide along the heat dissipation holes 201. A cooling fan body 5 is fixedly installed on the inner top of the housing 2, and a filter plate 3 is positioned and installed on the top of the housing 2.

[0027] Specifically, a temperature sensor 7 is fixedly installed on the inner wall of the housing 2 above the CPU body 8. The temperature sensor 7, the motor 604, and the cooling fan body 5 are all electrically connected to the PWM controller on the computer motherboard.

[0028] Using the above scheme, the temperature sensor 7 monitors the temperature of the CPU body 8 in real time and transmits the signal to the PWM controller. The controller synchronously adjusts the speed of the cooling fan body 5 and the operation of the motor 604 to drive the sliding adjustment plate 6 to change the opening degree of the heat dissipation hole 201 according to the temperature data. When the CPU temperature rises, the fan speed increases and the opening of the heat dissipation hole 201 increases, thereby enhancing the heat dissipation efficiency. When the temperature drops, the fan speed is adjusted in the opposite direction to reduce energy consumption and noise, forming a dynamically adapted heat dissipation closed loop, which improves the accuracy and energy saving of heat dissipation adjustment.

[0029] Specifically, a limiting slide plate 202 is fixedly connected to the inner wall of the housing 2 below the heat dissipation hole 201, the bottom of the adjusting plate 6 is slidably connected along the inside of the limiting slide plate 202, and a rack 601 is fixedly connected to the inner side of the top of the adjusting plate 6. The gear 603 and the rack 601 are meshed together.

[0030] The above scheme ensures the stable sliding of the adjustment plate 6. The limiting slide plate 202 provides support and guidance for the bottom of the adjustment plate 6, preventing the adjustment plate 6 from deviating when sliding. The meshing transmission between the gear 603 and the rack 601 facilitates the movement of the adjustment plate 6, ensuring that the adjustment plate 6 can smoothly and accurately cover and expose the heat dissipation hole 201, thereby reliably controlling the ventilation area of ​​the heat dissipation hole 201.

[0031] Specifically, both ends of the rack 601 are fixedly connected to stop blocks 602.

[0032] By adopting the above solution, the excessive sliding of the adjusting plate 6 is avoided, which would cause the rack 601 to disengage from the gear 603. The movement of the adjusting plate 6 is effectively limited, making it convenient to use.

[0033] Specifically, the filter screen 3 is snapped onto the top of the housing 2. Positioning rods 401 are fixedly connected to both sides of the top of the housing 2. Positioning plates 4 are slidably sleeved on the positioning rods 401. The upper end of the positioning plates 4 is inserted into the interior of the filter screen 3. A baffle 403 is fixedly connected to the end of the positioning rods 401. A spring 402 is fixedly connected between the baffle 403 and the positioning plates 4. The spring 402 is sleeved on the positioning rods 401.

[0034] The above solution enables quick disassembly and secure fixing of the filter plate 3. The filter plate 3 is initially positioned by snap-fit, and the elastic force of the spring 402 pushes the positioning plate 4 into the filter plate 3 to form a secondary fixation, ensuring that the filter plate 3 will not loosen or fall off when the fan is running. When disassembling, simply pull the positioning plate 4 to compress the spring 402 to release the fixation and remove the filter plate 3. This facilitates regular cleaning and replacement of the filter, avoids dust blockage affecting heat dissipation, and is easy to disassemble and install, making it flexible to use.

[0035] Specifically, the top two ends of the filter screen 3 are provided with positioning grooves 301, and the positioning plate 4 is inserted into the positioning grooves 301.

[0036] Using the above solution, the positioning groove 301 provides a precise insertion position for the positioning plate 4, avoiding misalignment between the positioning plate 4 and the filter screen 3, and ensuring the stable installation of the filter screen 3 on the top of the housing 2.

[0037] The working principle of this utility model:

[0038] During use, the base plate 1 is installed in a suitable position inside the chassis through the mounting holes on the ear plate 101, and the housing 2 is screwed into the base plate 1. During operation, the temperature sensor 7 monitors the temperature of the CPU body 8 in real time and transmits the signal to the PWM controller of the computer motherboard. It should be noted that the model of the PWM controller is NZXT GRID+V3, the model of the motor 604 is 42SHD0217-24BNema 17, and the model of the temperature sensor 7 is DS18B20.

[0039] The PWM controller dynamically adjusts the temperature based on the temperature data. When the CPU temperature rises, the controller increases the speed of the cooling fan 5 and starts the motor 604. The motor 604 drives the gear 603 to rotate. Through the meshing transmission between the gear 603 and the rack 601, the adjustment plate 6 slides along the limit slide plate 202, increasing the opening of the heat dissipation hole 201 and enhancing the heat dissipation efficiency. When the CPU temperature drops, the controller reduces the speed of the cooling fan, and the motor 604 rotates in reverse to reset the adjustment plate 6, reducing the opening of the heat dissipation hole 201 and reducing energy consumption and noise. At the same time, the filter plate 3 can filter the air entering the housing 2 and is easy to disassemble and clean. The whole system forms a dynamically adapted heat dissipation closed loop, realizing precise and energy-saving heat dissipation adjustment, which is easy to disassemble and maintain and flexible in use.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable CPU cooling fan, comprising a base plate (1), characterized in that: A housing (2) is threaded onto the circumferential sidewall of the base plate (1). A CPU body (8) is fixedly installed in the middle of the base plate (1). Ear plates (101) are fixedly connected to both ends of the bottom of the base plate (1). The housing (2) has evenly distributed heat dissipation holes (201). An adjustment plate (6) is slidably connected to the inner wall of the housing (2). The adjustment plate (6) covers the heat dissipation holes (201). A support plate (203) is fixedly connected to the inner wall of the housing (2) above the adjustment plate (6). A motor (604) is fixedly installed on the top of the support plate (203). A gear (603) is sleeved and fixed at the output end of the motor (604). The gear (603) can drive the adjustment plate (6) to slide along the heat dissipation holes (201). A cooling fan body (5) is fixedly installed on the inner side of the top of the housing (2). A filter plate (3) is positioned and installed on the top of the housing (2).

2. An adjustable CPU cooling fan as described in claim 1, characterized in that: A temperature sensor (7) is fixedly installed on the inner wall of the housing (2) above the CPU body (8). The temperature sensor (7), the motor (604) and the cooling fan body (5) are all electrically connected to the PWM controller on the computer motherboard.

3. An adjustable CPU cooling fan as described in claim 1, characterized in that: A limiting slide plate (202) is fixedly connected to the inner wall of the housing (2) below the heat dissipation hole (201). The bottom of the adjusting plate (6) is slidably connected along the inside of the limiting slide plate (202). A rack (601) is fixedly connected to the inner side of the top of the adjusting plate (6). The gear (603) and the rack (601) are meshed together.

4. An adjustable CPU cooling fan as described in claim 3, characterized in that: Both ends of the rack (601) are fixedly connected to stop blocks (602).

5. An adjustable CPU cooling fan as described in claim 1, characterized in that: The filter screen (3) is snapped onto the top of the housing (2). Positioning rods (401) are fixedly connected to both sides of the top of the housing (2). Positioning plates (4) are slidably sleeved on the positioning rods (401). The upper end of the positioning plates (4) is inserted into the interior of the filter screen (3). A baffle (403) is fixedly connected to the end of the positioning rods (401). A spring (402) is fixedly connected between the baffle (403) and the positioning plates (4). The spring (402) is sleeved on the positioning rods (401).

6. An adjustable CPU cooling fan as described in claim 5, characterized in that: The filter screen (3) has positioning grooves (301) at both ends of its top, and the positioning plate (4) is inserted into the positioning grooves (301).

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