A small fan heat dissipation structure

Abstract

This utility model relates to the field of heat dissipation structure technology, and in particular to a small fan heat dissipation structure, including a heat dissipation shell with an air inlet. A turbine fan blade, coaxially aligned with the air inlet, is installed inside the heat dissipation shell. The heat dissipation shell also has a heat dissipation channel for dissipating absorbed heat. A filter module is provided in the heat dissipation channel. The filter module includes a filter screen horizontally inserted into the heat dissipation channel. The filter screen has a first filter element and a second filter element for filtering dust. A side filter port for inserting and removing the filter module is formed on the side wall of the heat dissipation channel. A side mounting plate that mates with the side filter port is installed on one side of the filter screen. The side filter port has a locking structure for locking the side mounting plate. Furthermore, the design of the filter element being horizontally inserted into the heat dissipation channel increases the filtration area and significantly increases the dirt-holding capacity. The filter module can be quickly replaced by horizontally inserting and removing it through the side filter port, in conjunction with the side mounting plate and the fixing structure.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation structure technology, and in particular to a small fan heat dissipation structure. Background Technology

[0002] A turbocharger is essentially an air compressor that increases the intake air volume by compressing air. It uses the inertia and pressure of the exhaust gas from the engine to drive a turbine in the turbine housing, which in turn drives a coaxial impeller. The impeller compresses the air flowing through the air filter, pressurizing it before it enters the cylinder. However, the compressed air has a high density, which causes it to heat up in the turbocharger's turbine housing, increasing its operating temperature. If the turbine housing is not cooled in time, the large amount of high-temperature, high-pressure gas can cause the internal components of the turbocharger to burn out, thus affecting the normal operation of the turbocharger.

[0003] The announcement number is CN214836578U, and the name is "A Heat-Resistant Steel Turbine Housing for a Turbocharger". It includes an inner housing and an outer housing. A connecting base is provided at the bottom of both the inner and outer housings, and the connecting base is fixedly connected to the inner and outer housings. A heat-conducting plate is fixedly connected to the outer wall of the inner housing. Multiple heat-conducting columns, evenly spaced, are fixedly connected to the side of the heat-conducting plate near the inner housing. These heat-conducting columns are embedded inside the inner housing. By providing the heat-conducting plate and heat-conducting columns on the inner housing, heat received by the inner housing is transferred to the interior of the heat-conducting plate through the heat-conducting columns. Then, multiple heat dissipation fins on the heat-conducting plate dissipate the heat to the outside of the outer housing, thereby improving the heat dissipation effect of the turbine housing. A graphene heat dissipation layer is provided on the inner wall of the outer housing to prevent heat accumulation inside the outer housing, further improving the heat dissipation effect of the outer housing.

[0004] Traditional axial fans rely on axial air intake, requiring a relatively long axial installation space; while ordinary centrifugal fans, although smaller in size, have simple airflow designs, such as rectangular straight airflow ducts, and cannot effectively utilize centrifugal force to accelerate airflow. This results in existing solutions either having insufficient heat dissipation capacity in miniaturized devices, or forcing an increase in device size, which contradicts the requirement of high heat dissipation in a small size. Utility Model Content

[0005] The purpose of this invention is to provide a small fan cooling structure to address the shortcomings of existing technologies.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A small fan heat dissipation structure includes a heat dissipation shell with an air inlet. A turbine fan blade, coaxially aligned with the air inlet, is installed inside the heat dissipation shell. The heat dissipation shell also has a heat dissipation channel for expelling absorbed heat. A filter module is provided in the heat dissipation channel. The filter module includes a filter screen horizontally inserted into the heat dissipation channel. The filter screen has a first filter element and a second filter element for filtering dust. A side filter port for inserting and removing the filter module is formed on the side wall of the heat dissipation channel. A side mounting plate that mates with the side filter port is installed on one side of the filter screen. The side filter port has a locking structure for locking the side mounting plate. A connector heat dissipation device is connected to the heat dissipation shell. The connector heat dissipation device includes a mounting bracket connected to the heat dissipation shell. The mounting bracket has a rotating head and a cooling fan mounted on it, with the air outlet of the cooling fan facing the rotating head.

[0008] Furthermore, the filter module also includes a bottom mounting plate perpendicular to the side mounting plate, on which the first filter element, the filter screen, and the second filter element are sequentially and fitted together.

[0009] Furthermore: the first filter element is attached to the front end of the filter screen, and the second filter element is attached to the rear end of the filter screen.

[0010] Furthermore: Both the first and second filter elements are filter elements designed for ventilation, wherein the mesh size of the second filter element is smaller than that of the first filter element.

[0011] Furthermore: the bottom of the first filter element, the filter screen, and the second filter element are respectively equipped with bottom connecting plates. The bottom connecting plates are formed with a raised first T-shaped block, and the bottom mounting plate is formed with a first T-shaped groove that slides and engages with the first T-shaped block along the length direction.

[0012] Furthermore: the first filter element, the filter screen, and the second filter element are equipped with side connecting plates on their sides. The side connecting plates are perpendicular to the bottom connecting plates. The side connecting plates are formed with a raised second T-shaped block. The side mounting plates are formed with a second T-shaped groove that slides with the second T-shaped block along their length.

[0013] Furthermore: the bottom wall inside the heat dissipation channel is provided with a bottom guide rail along the moving direction of the side mounting plate, and a bottom sliding block that slides in conjunction with the bottom guide rail is installed at the bottom of the bottom mounting plate.

[0014] Furthermore: the fixing structure includes a locking ring formed on the side mounting plate, and a laterally movable locking post is provided on the outer wall of the heat dissipation channel. The locking post is laterally coaxially aligned with the locking ring, and the locking post is elastically inserted into the locking ring.

[0015] Furthermore: the mounting bracket is formed with a concave drive groove, and concave movable grooves are formed at both ends of the drive groove. The rotating head is rotatably mounted on the drive groove through the movable groove.

[0016] Furthermore: a circular mounting slot is formed at the bottom of the drive slot, and the cooling fan is installed in the circular mounting slot.

[0017] The beneficial effects of this utility model are as follows: outside air is drawn into the heat sink through the air inlet by the turbine fan blades. Under the action of the turbine fan blades, the air is compressed, which can dissipate heat from the metal heat-conducting structure inside the heat sink. Then, the dissipated airflow is discharged through the heat dissipation channel, thus achieving circulating heat dissipation.

[0018] The first filter layer intercepts large dust particles, while the second filter layer filters fine particles, forming a double protection and extending the filter replacement cycle. Furthermore, the design of the filter element being inserted horizontally into the heat dissipation channel increases the filtration area and significantly increases the dirt-holding capacity. The filter module can be inserted and removed horizontally through the side filter port, and with the side mounting plate and fixing structure, filter replacement can be completed quickly.

[0019] The heat sink and the connector heat dissipation device work together to form an integrated structure. The rotating head is a 3D printed rotating head. The cooling fan can blow air into the rotating head mounted on the mounting bracket, which greatly reduces the temperature of the rotating head during operation, improves the overall stability, and has a better heat dissipation effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the fan cooling structure.

[0021] Figure 2 This is a cross-sectional schematic diagram of the fan cooling structure.

[0022] Figure 3 This is a schematic diagram of the fan cooling structure from another perspective.

[0023] Figure 4 This is a schematic diagram of the filter module.

[0024] The reference numerals in the figures include:

[0025] 1-Heat sink,

[0026] 11-Air inlet, 12-Turbine fan blades, 13-Power unit, 14-Circuit strip, 15-Heat dissipation channel

[0027] 2-Connector heat dissipation device,

[0028] 21-Mounting bracket, 22-Drive slot, 23-Movable slot, 24-Circular mounting slot, 25-Cooling fan,

[0029] 26- Rotate head,

[0030] 3-Filtering module

[0031] 31-Filter screen, 32-Side mounting plate, 33-Bottom mounting plate, 34-Side filter port, 35-Locking ring,

[0032] 36-Locking pin, 37-Bottom sliding block,

[0033] 4- First filter element

[0034] 40 - Second filter element, 41 - Bottom connecting plate, 42 - First T-shaped block, 43 - First T-shaped groove

[0035] 44-Side connecting plate, 45-Second T-block, 46-Second T-slot. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the accompanying drawings.

[0037] like Figure 1-4 As shown, a small fan heat dissipation structure includes a heat dissipation shell 1 with an air inlet 11. A turbine fan blade 12, coaxially aligned with the air inlet 11, is installed inside the heat dissipation shell 1. An electrical strip 14 and a power base 13 for mounting the turbine fan blade 12 are also provided inside the heat dissipation shell 1. The power base 13 is connected to the electrical strip 14, which contains wires that can be connected to the motor signal of the power base 13 to provide power to the motor and drive the turbine fan blade 12 to rotate. The heat dissipation shell 1 also has a heat dissipation channel 15 for dissipating absorbed heat. A filter module 3 is provided in the heat dissipation channel 15. The filter module 3 includes a filter screen 31 horizontally inserted into the heat dissipation channel 15. The filter screen 31 has a first filter element 4 and a second filter element 40 for filtering dust. A side filter port 34 for inserting and removing the filter module 3 is formed on the side wall of the heat dissipation channel 15. A side mounting plate 32 that mates with the side filter port 34 is installed on one side of the filter screen 31. The side filter port 34 has a locking structure to prevent the side mounting plate 32 from being locked.

[0038] Outside air is drawn into the heat sink 1 through the air inlet 11 by the turbine blades 12. Under the action of the turbine blades 12, the air is compressed, which can dissipate heat from the metal heat-conducting structure inside the heat sink 1. Then, the dissipated airflow is discharged through the heat dissipation channel 15, realizing cyclic heat dissipation.

[0039] The first filter element 4 intercepts large dust particles, while the second filter element 40 filters fine particles, forming dual protection and extending the filter element replacement cycle. In addition, the design of the filter element being inserted horizontally into the heat dissipation channel 15 increases the filtration area and significantly increases the dirt holding capacity. The filter module 3 can be inserted and removed horizontally through the side filter port 34, and with the side mounting plate 32 and fixing structure, the filter element can be replaced quickly.

[0040] In addition, the heat sink 1 is connected to a connector heat dissipation device 2, which includes a mounting bracket 21 connected to the heat sink 1. The mounting bracket 21 is equipped with a rotating head 26 and a cooling fan 25, with the air outlet of the cooling fan 25 facing the rotating head 26. The heat sink 1 and the connector heat dissipation device 2 cooperate to form an integrated structure. The rotating head 26 is a 3D-printed rotating head. The cooling fan 25 blows air into the rotating head 26 mounted on the mounting bracket 21, which greatly reduces the temperature of the rotating head 26 during operation, improves the overall stability, and has a better heat dissipation effect.

[0041] Specifically, the filter module 3 also includes a bottom mounting plate 33 perpendicular to the side mounting plate 32. The first filter element 4, the filter screen 31, and the second filter element 40 are sequentially and closely mounted on the bottom mounting plate 33. The first filter element 4 is a coarse filter screen used to intercept large dust particles, and the second filter element 40 is a HEPA filter used to filter fine particulate matter, forming double protection and further reducing the amount of dust entering the heat dissipation channel 15. When the amount of dust accumulated in the filter module 3 reaches a certain level, it can be removed for cleaning, or the first and second filter elements can be replaced.

[0042] The first filter element 4 is attached to the front end of the filter screen 31, and the second filter element 40 is attached to the rear end of the filter screen 31. Both the first and second filter elements 40 are ventilation-oriented filter structures, with the mesh size of the second filter element 40 being smaller than that of the first filter element 4. The dual-layer filter elements are directly attached to the front and rear ends of the filter screen 31 without the need for additional supports or connectors, thus reducing the thickness of the filter module 3. This coarse-to-fine grading mechanism avoids the rapid clogging caused by a single filter element directly intercepting large particles. The tight fit between the filter element and the filter screen 31 prevents airflow bypass, while the smooth design of the filter element surface reduces local turbulence. Referring to the design of a septum-less HEPA filter, this structure allows airflow to pass evenly through the filter element, reducing the risk of filtration leakage due to turbulence and making the actual filtration efficiency closer to the nominal value.

[0043] Preferably, the second filter element 40 is made of nanofiber or PTFE microporous membrane material. The electrostatic adsorption effect of the second filter element 40 can actively capture charged particles, supplementing the shortcomings of mechanical interception. When the first filter element 4 gradually accumulates dust, its mesh is partially blocked, and the airflow will automatically adjust its path, giving priority to passing through the unblocked area, thereby slowing down the overall pressure drop increase rate.

[0044] Furthermore, bottom connecting plates 41 are respectively installed at the bottom of the first filter element 4, filter screen 31, and second filter element 40. The bottom connecting plates 41 are formed with a raised first T-shaped block 42, and the bottom mounting plate 33 is formed along its length with a first T-shaped groove 43 that slides with the first T-shaped block 42. The bottoms of the first filter element 4, filter screen 31, and second filter element 40 are slidably connected to the first T-shaped block 42 and the first T-shaped groove 43 of the bottom mounting plate 33, allowing the first filter element 4, filter screen 31, and second filter element 40 to be installed in a close fit, forming an integrated structure with good overall stability. When the filter module 3 accumulates a lot of dust, it needs to be removed and replaced. The first filter element 4, filter screen 31, and second filter element 40 are slidably removed through the first T-shaped block 42 and the first T-shaped groove 43 of the bottom mounting plate 33. Individual separation and replacement are possible.

[0045] Furthermore, side connecting plates 44 are installed on the sides of the first filter element 4, filter screen 31, and second filter element 40. The side connecting plates 44 are perpendicular to the bottom connecting plate 41. The side connecting plates 44 are formed with raised second T-shaped blocks 45. The side mounting plate 32 is formed with a second T-shaped groove 46 along its length that slides with the second T-shaped blocks 45. The outer sides of the first filter element 4, filter screen 31, and second filter element 40 are slidably connected to the second T-shaped groove 46 of the side mounting plate 32 through the first and second T-shaped blocks, respectively, so that the first filter element 4, filter screen 31, and second filter element 40 are installed in a close fit. With the help of the bottom connecting plate 41, the first filter element 4, filter screen 31, and second filter element 40 can be positioned and installed on one side and bottom, further improving the overall stability. During disassembly, the same as the above scheme is used for sliding separation, which can achieve individual separation, disassembly, and replacement.

[0046] Furthermore, a bottom guide rail is arranged on the bottom wall inside the heat dissipation channel 15 along the moving direction of the side mounting plate 32, and a bottom sliding block 37 is installed on the bottom of the bottom mounting plate 33 to slide with the bottom guide rail. When installing the filter module 3, the bottom sliding block 37 of the bottom mounting plate 33 slides with the bottom guide rail inside the heat dissipation channel 15 to achieve sliding installation, which can improve the installation stability of the filter module 3.

[0047] The fixing structure includes a locking ring 35 formed on the side mounting plate 32, a laterally movable locking post 36 provided on the outer wall of the heat dissipation channel 15, and a guide sleeve formed for the laterally sliding locking post 36. The locking post 36 and the locking ring 35 are laterally coaxially aligned, and the locking post 36 is elastically inserted into the locking ring 35. In this embodiment, after the filter module 3 is installed in place, the locking post 36 is exactly coaxially aligned with the locking ring 35. Then, under the action of the spring, the locking post 36 can be elastically inserted into the locking ring 35 to achieve a locking connection. When it needs to be pulled out, the locking post 36 is pulled out, at which time the side mounting plate 32 can be pulled out, and the filter module 3 can be taken out for cleaning or replacement.

[0048] The mounting bracket 21 has a recessed drive groove 22, and recessed movable grooves 23 are formed at both ends of the drive groove 22. The rotating head 26 is rotatably mounted on the drive groove 22 through the movable grooves 23. A circular mounting groove 24 is formed at the bottom of the drive groove 22, and the cooling fan 25 is mounted in the circular mounting groove 24. The drive groove 22 has a recessed structure, and the rotating head 26 is rotatably mounted through the movable grooves 23 at both ends, forming a groove-enclosed rotational support. The concave curvature of the movable grooves 23 matches the rotation axis of the rotating head 26, which can reduce the wobbling amplitude of the rotating head 26 when rotating.

[0049] The circular mounting slot 24 precisely matches the outer diameter of the cooling fan 25, constraining and guiding the airflow from the fan. The fan nozzle directly faces the rotating head 26, forming point-to-point directional heat dissipation. When the rotating head 26 is adjusted to any angle, the fan airflow always covers its core heat-generating area. In addition, the drive slot 22, the movable slot 23, and the circular mounting slot 24 are all integrally formed with the mounting bracket 21, eliminating the need for additional supports or connectors and reducing the overall thickness of the connector heat dissipation device 2.

[0050] In summary, this utility model possesses the aforementioned excellent characteristics, enabling it to achieve unprecedented efficiency in use and thus become a highly practical product.

[0051] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A small fan heat dissipation structure, comprising a heat dissipation shell, an air inlet formed therein, turbine fan blades coaxially aligned with the air inlet installed inside the heat dissipation shell, and a heat dissipation channel formed therein to dissipate the absorbed heat, characterized in that: The heat dissipation channel is equipped with a filter module, which includes a filter screen inserted horizontally in the heat dissipation channel. The filter screen is equipped with a first filter element and a second filter element for filtering dust. The side wall of the heat dissipation channel is formed with a side filter port for inserting and removing the filter module. A side mounting plate that cooperates with the side filter port is installed on one side of the filter screen. The side filter port is equipped with a fixing structure that locks the side mounting plate. The heat sink is connected to a connector heat dissipation device, which includes a mounting bracket connected to the heat sink. The mounting bracket is equipped with a rotating head and a cooling fan, with the air outlet of the cooling fan facing the rotating head.

2. The small fan heat dissipation structure according to claim 1, characterized in that: The filtration module also includes a bottom mounting plate perpendicular to the side mounting plate, and the first filter element, filter screen and second filter element are sequentially and closely mounted on the bottom mounting plate.

3. The small fan heat dissipation structure according to claim 2, characterized in that: The first filter element is attached to the front end of the filter screen, and the second filter element is attached to the rear end of the filter screen.

4. The small fan heat dissipation structure according to claim 3, characterized in that: Both the first and second filter elements are filter elements used for ventilation, wherein the mesh size of the second filter element is smaller than that of the first filter element.

5. A small fan heat dissipation structure according to claim 4, characterized in that: Bottom connecting plates are respectively installed at the bottom of the first filter element, the filter screen, and the second filter element. The bottom connecting plate is formed with a raised first T-shaped block, and the bottom mounting plate is formed with a first T-shaped groove that slides and engages with the first T-shaped block along the length direction.

6. The small fan heat dissipation structure according to claim 5, characterized in that: The first filter element, the filter screen, and the second filter element are each equipped with a side connecting plate. The side connecting plate is perpendicular to the bottom connecting plate. The side connecting plate is formed with a raised second T-shaped block. The side mounting plate is formed with a second T-shaped groove that slides with the second T-shaped block along its length.

7. A small fan heat dissipation structure according to claim 6, characterized in that: The bottom wall inside the heat dissipation channel is provided with a bottom guide rail along the moving direction of the side mounting plate, and a bottom sliding block that slides with the bottom guide rail is installed at the bottom of the bottom mounting plate.

8. A small fan heat dissipation structure according to claim 7, characterized in that: The fixing structure includes a locking ring formed on the side mounting plate, and a transversely movable locking post is provided on the outer wall of the heat dissipation channel. The locking post is transversely coaxially aligned with the locking ring, and the locking post is elastically inserted into the locking ring.

9. A small fan heat dissipation structure according to claim 1 or 8, characterized in that: The mounting bracket is formed with a concave drive groove, and concave movable grooves are formed at both ends of the drive groove. The rotating head is rotatably mounted on the drive groove through the movable groove.

10. A small fan heat dissipation structure according to claim 9, characterized in that: The bottom of the drive slot has a circular mounting slot, and the cooling fan is mounted in the circular mounting slot.

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