Improved omni-directional air curtain heat dissipation protective shell

Abstract

The utility model discloses an improved all -round wind screen heat dissipation protection shell, including main casing, fan module, fan module sets up in the main casing center, and the both sides symmetry of fan module are provided with main air duct, and main air duct is the convex cavity to the direction of the main casing pasting machine face away, and the pasting machine face of main casing is equipped with the capillary slit groove structure of matrix grid alternation, and the communicating place of main air duct and fan module is provided with transition surface structure, and the communicating place of capillary slit groove structure and fan module is provided with negative pressure chamber, the utility model can solve the area heat of pasting machine, constructs double convection passage and keeps heat dissipation balance, and the optimization air duct vortex is to the slope / radian transition and reduces resistance and noise and improves efficiency, and the air duct of gradual change contraction balances air volume, and keeps heat dissipation consistent and covers strong middle section, and the structure optimization balance wall thickness reduces injection defect and improves yield, and the application venturi effect makes up air volume, and noise reduction prolongs life, and integrated plug realizes synchronous filling and heat dissipation, and the expansion scheme supports cableless, and the optimization structure adapts key, and expands machine type and reduces cost.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone protective case technology, specifically to an improved all-around air curtain heat dissipation protective case. Background Technology

[0002] Patent CN220896732U discloses an all-around air curtain surround heat dissipation phone case, but it has the following core defects:

[0003] (a) Heat buildup on the machine surface

[0004] Because the back of the phone and the protective case are completely pressed together without any effective heat dissipation gaps, heat cannot be dissipated in time, resulting in heat accumulation in the contact area and limiting the overall heat dissipation efficiency. Due to the need to fix the phone, conventional structures cannot overcome the design contradiction of "closed contact surface" and cannot achieve a balance of "stable fixation + efficient heat dissipation + balanced heat dissipation + all-round heat dissipation surface coverage".

[0005] (II) Duct Vortex and Wind Noise Issues

[0006] The connection between the fan and the main air duct is obstructed by a sudden change in opening angle and height difference, which can easily generate vortices and wind noise when air flows through it.

[0007] 2.1 Vortex effect: Increases airflow resistance, leading to a decrease in air volume, a corresponding decrease in heat dissipation capacity, and a reduction in fan power utilization.

[0008] 2.2 Noise impact: At high speeds, the vortex generates howling and high-frequency noise, resulting in a poor experience in quiet environments (such as libraries or at night).

[0009] (III) Problem of uneven air volume distribution

[0010] The fan duct needs to achieve heat dissipation from three sides: bottom, top, and sides. However, the large contact area duct design leads to an unbalanced airflow distribution.

[0011] High-speed airflow escapes preferentially from the near-end opening (the air outlet closer to the fan) due to pressure difference, while the far-end airflow (the air outlet farther from the fan) also flows out quickly due to "front and back compression," failing to evenly cover the middle area (such as the heat-generating area in the middle of the air duct); the wind power utilization rate of the fan is greatly reduced, the heat dissipation effect and energy consumption ratio are unbalanced, and the heat dissipation coverage in the middle area is insufficient. Before the improvement, the actual measurement showed that the airflow speed at the top and bottom of the air outlet on the phone was 2-3.2 m / s, while the speed in the middle was only 0.9-1.6 m / s.

[0012] (iv) Injection Molding Defects

[0013] Irregular air duct structure leads to uneven wall thickness during injection molding. After molding, due to the difference in residual heat distribution, the thick-walled area shrinks and sinks, affecting the appearance and yield. Conventional design does not take into account the balance between "structural function" and "injection molding processability", increasing production difficulty and cost.

[0014] (v) Fan intake efficiency issues

[0015] Traditional turbo fans require double-sided air intake to ensure efficient operation (increasing air intake efficiency by 50%), but the existing structure only supports single-sided air intake (rear air intake), which easily leads to the phenomenon of "exhaust speed > intake speed" under no-load conditions: no-load causes the fan speed to soar and noise to increase; long-term no-load causes fan blade damage and shortens bearing life, increasing after-sales costs.

[0016] (vi) Power supply compatibility issues

[0017] The fan relies on OTG reverse power, which causes a conflict between phone charging and heat dissipation: the OTG cable needs to be plugged and unplugged when charging, and heat dissipation cannot be carried out at the same time, making the operation cumbersome and affecting the user experience; powering the fan separately requires carrying an additional power cord / battery pack, increasing the cost of use and the burden of portability.

[0018] (vii) Key conflict issues in some models

[0019] The casing and the phone's physical buttons need to fit tightly, which causes the physical buttons on the side of some models to block the airflow. If a gap is simply forced in the airflow, the phone buttons cannot be operated normally (such as the power button and volume buttons being suspended in the gap and unable to contact the casing). Conventional structures do not consider "multi-model compatibility" and can only limit the compatibility to a single model, thus reducing the range of applicable models.

[0020] Therefore, improving the above solution is an urgent problem that technical personnel in the relevant field need to solve. Utility Model Content

[0021] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: an improved all-round air curtain heat dissipation protective shell, including a main shell and a fan module;

[0022] The fan module is located at the center of the main housing. Main air ducts are symmetrically arranged on both sides of the fan module. The main air duct is a protruding cavity that moves away from the surface of the main housing. The surface of the main housing has a matrix-grid alternating capillary groove structure. A transition surface structure is provided at the connection between the main air duct and the fan module. A negative pressure chamber is provided at the connection between the capillary groove structure and the fan module. The other end of the main air duct and the capillary groove structure is connected to the outside of the housing through a side opening or a back opening.

[0023] The main air duct adopts a gradually narrowing channel along the direction from the near end to the far end of the fan, that is, the opening gap at the near end is larger than the opening gap at the far end. A flow regulating valve is provided at the connection between the main air duct and the side wall of the housing.

[0024] The bottom surface of the negative pressure chamber is provided with several air inlets. An isolation wall and a negative pressure one-way valve wall are provided at the connection between the negative pressure chamber and the main air duct. An air inlet channel connected to the main air duct is provided at intervals between the isolation wall and the negative pressure one-way valve wall. The air inlet channel is a funnel-shaped Venturi channel that first contracts and then expands.

[0025] Furthermore, the transition surface structure is a slope or an arc-shaped surface.

[0026] Furthermore, the main housing is provided with a fan mounting port corresponding to the fan module, and a central fan suspension back plate is mounted on the fan mounting port. The fan module is mounted on the inner side of the central fan suspension back plate. The central fan suspension back plate and the fan mounting port form a fan air inlet, and the side wall of the fan air inlet is a beveled side wall.

[0027] Furthermore, the fan module includes fan blades and an integrated fan circuit board connected to the fan blades. The integrated fan circuit board is disposed on the central suspension back plate of the fan, and both ends of the integrated fan circuit board are respectively connected to the fan mounting port through fan anti-detachment covers.

[0028] Furthermore, the outer surface of the central suspension back plate of the fan is provided with fan control button mounting holes, LED light mounting holes and fan circuit board power supply sockets. The fan control button mounting holes and LED light mounting holes are provided with fan control buttons and LED beads connected to the fan module. The fan circuit board power supply socket is connected to the mobile phone charging port through an OTG reverse power supply structure.

[0029] Furthermore, the OTG reverse power supply structure is an integrated plug. The two ends of the OTG reverse power supply structure are respectively provided with a male connector one that connects to the power supply socket of the fan circuit board and a male connector two that connects to the mobile phone charging port. An intermediate female connector is provided between the male connector one and the male connector two, and a female connector for connecting to an external charger is provided on the intermediate female connector.

[0030] Furthermore, a wireless charging coil is also embedded in the back plate of the central suspension of the fan, and the wireless charging coil is connected to 1-2 1-5F farad capacitors.

[0031] Furthermore, the outer surface of the central suspension backplate of the fan is covered with a functional cover plate.

[0032] Furthermore, the main housing has a button area corresponding to the mobile phone buttons and several side ventilation holes on its side. The button area has a vertically extending strip button, and a clearance groove is provided between the button area and the vertically extending strip button.

[0033] Furthermore, a camera cutout area corresponding to the mobile phone camera is provided on the back of the main housing, and a camera protection ring is provided on the outer edge of the camera cutout area.

[0034] The advantages of this utility model compared with the prior art are as follows:

[0035] (1) This utility model constructs a convection path of “main air duct → machine surface → outside” by designing a matrix grid capillary groove; when the fan inlet is blocked, a convection channel of “outside → negative pressure chamber → machine surface → fan → main air duct” can be formed, thereby eliminating the dead corner of heat accumulation in the whole area, while ensuring the stability of the main air duct wind pressure, and achieving a balance between “stable fixation and efficient heat dissipation” and heat dissipation even when the air inlet is blocked.

[0036] (2) This utility model uses a slope and arc transition structure to make the fan and the main air duct smoothly connected, reduce airflow resistance and wind noise, improve the fan's power utilization rate, and eliminate wind noise generated by high-speed whistling and vortex airflow confrontation.

[0037] (3) This utility model achieves uniform wind force distribution by adopting a gradually shrinking air duct, maximizes the efficiency of the fan, ensures the consistency of heat dissipation effect on multiple sides, and focuses on strengthening the uniform wind force coverage in the middle section of the outlet air duct.

[0038] (4) By applying the Venturi effect, this utility model designs a trumpet-shaped air inlet cavity and a negative pressure cavity anti-backflow wall structure to supplement the single-sided air intake of the fan, eliminate no-load and noise problems, and extend the service life of the fan.

[0039] (5) This utility model adopts an integrated plug with male ends and female in the middle to realize simultaneous operation of charging and heat dissipation without the need for plugging and unplugging; it also expands the battery pack and wireless reverse power supply scheme to support cableless heat dissipation.

[0040] (6) This utility model optimizes the structural compatibility between the air duct and the button area, is compatible with the side button operation of multiple models, expands the coverage of models, reduces R&D costs, and enhances application value. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the outer side of an improved all-around air curtain heat dissipation protective shell according to this utility model.

[0042] Figure 2 This is a schematic diagram of the inner side of an improved all-around air curtain heat dissipation protective shell according to this utility model.

[0043] Figure 3 This is a schematic diagram of the button area in an improved all-around air curtain heat dissipation protective shell according to this utility model.

[0044] Figure 4 This is a schematic diagram of the negative pressure chamber in an improved all-around air curtain heat dissipation protective shell according to this utility model.

[0045] Figure 5 This is a schematic diagram of the integrated fan circuit board in an improved all-around air curtain heat dissipation protective shell according to this utility model.

[0046] Figure 6 This is a schematic diagram showing the disassembled structure of the fan module in an improved all-around air curtain heat dissipation protective shell according to this utility model.

[0047] Figure 7 This is a schematic diagram of the OTG reverse power extraction structure in an improved all-around air curtain heat dissipation protective shell of this utility model.

[0048] Figure 8 This is a schematic diagram of an improved all-around air curtain heat dissipation protective shell according to the present invention to increase the airflow.

[0049] Figure 9 This utility model presents a schematic diagram showing the wind speed distribution measurement points located in the wind direction of an improved all-around air curtain heat dissipation protective shell. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0051] In the description of the embodiments of this utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0052] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0053] In the description of the embodiments of this utility model, "a plurality of" means at least two.

[0054] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0055] Example:

[0056] Combined with appendix Figure 1-9 This embodiment discloses an improved all-around air curtain heat dissipation protective shell, including a main shell 1 and a fan module 2;

[0057] The fan module 2 is located at the center of the main housing 1. Main air ducts 3 are symmetrically arranged on both sides of the fan module 2. Each main air duct 3 is a protruding cavity extending away from the surface of the main housing 1. The surface of the main housing 1 has an alternating matrix-grid capillary groove structure 4. A transition surface structure 5, which is either a slope or an arc shape, is provided at the connection between the main air duct 3 and the fan module 2. A negative pressure chamber 6 is provided at the connection between the capillary groove structure 4 and the fan module 2. The other end of the main air duct 3 and the capillary groove structure 4 communicates with the outside of the main housing 1 through a side opening or a back opening. The main air duct 3 adopts a gradually narrowing channel from the near end to the far end of the fan, meaning the opening gap at the near end is larger than the opening gap at the far end. A flow regulating valve 7 is provided at the connection between the main air duct 3 and the side wall of the housing.

[0058] In this embodiment, the capillary groove structure 4 is arranged in an "array" to cover the outer periphery of the main air duct 3, the back of the phone and the surface of the casing, and high heat-generating areas (such as the CPU, camera, and battery areas). The capillary groove structure 4, together with the main air duct 3 which utilizes the Venturi effect, generates negative pressure, actively drawing in hot air from the surface of the phone and circulating it into or out of the main air duct 3. At the same time, it also draws in a large amount of external cold air from the negative pressure chamber 6. The raised surface of the grid structure matrix contacts the back of the phone, forming a shielding and slow leakage effect on the main air duct 3, preventing the wind pressure of the main air duct 3 from leaking directly to the outside due to large-area capillary gaps, and ensuring the airflow supply to the far-end heat dissipation area and the airflow coverage of the screen at the air outlet.

[0059] At the connection between the fan edge and the main air duct 3, a transition surface structure 5 with slope and curvature is adopted to replace the traditional abrupt protrusion design. The smooth slope and curvature structure eliminates the "discontinuity surface" of the airflow, avoids airflow separation and vortex generation caused by abrupt angle changes, and reduces the intensity of airflow disturbance. It effectively suppresses howling and high-frequency noise caused by vortexes under high speed conditions. In a quiet environment, the fan operating noise is reduced by 24-40dB compared with the traditional structure, significantly optimizing the user experience.

[0060] Compared to the previous generation, which had uneven airflow distribution, excessively concentrated airflow, weak side airflow, and uneven heat dissipation, the improved and optimized version has a more even airflow distribution and significantly enhanced utilization.

[0061] Actual test example: combined with the attached Figure 9 The phone was placed horizontally, divided into two sections, A and B. Each section A and B had a main air vent, and each main air vent further divided into 4-5 smaller air vents reaching the center of the screen (A1; A2; A3; A4; A5, B1; B2; B3; B4; B5) and the edge of the screen (a1; a2; a3; a4; a5, b1; b2; b3; b4; b5). Data was tested when the airflow was in the center of the phone and when it was at the edge of the phone. The results are shown in Table 1.

[0062] Table 1

[0063]

[0064] Furthermore, the bottom surface of the negative pressure chamber 6 is provided with a plurality of air inlets 8, and an isolation guide plate 9 and a negative pressure one-way valve wall 10 are provided at the connection between the negative pressure chamber 6 and the main air duct 3. An air inlet channel 11 communicating with the main air duct 3 is provided at intervals between the isolation guide plate 9 and the negative pressure one-way valve wall 10. The air inlet channel 11 is a funnel-shaped Venturi channel that first contracts and then expands.

[0065] In specific implementation, when the mobile phone case of this embodiment is assembled onto the mobile phone, the negative pressure chamber 6 forms an independent vacuum chamber, the air inlet 8 is the connection port between this vacuum chamber and the outside, the isolation guide plate 9 inside the negative pressure chamber 6 optimizes the airflow path, the inlet and outlet of the negative pressure chamber 6 are connected to the main air duct 3 to form a two-stage air intake enhancement system, ensuring unidirectional airflow and compensating for the shortcomings of insufficient air intake at the fan inlet and reduced fan efficiency; at the same time, the horn-shaped Venturi channel and the isolation guide plate 9 and the negative pressure one-way valve wall 10 form a non-linear change in the angle with the fan axis along the airflow direction, which is "large → small → large", forming a Venturi structure that first contracts and then expands.

[0066] Furthermore, the main housing 1 is provided with a fan mounting port 12 corresponding to the fan module 2, and a fan central suspension back plate 13 is mounted on the fan mounting port 12. The fan module 2 is disposed on the inner side of the fan central suspension back plate 13. The fan central suspension back plate 13 and the fan mounting port 12 form a fan air inlet, and the side wall of the fan air inlet is a beveled side wall 14.

[0067] The fan module 2 includes a fan blade 201 and a fan integrated circuit board 202 connected to the fan blade 201. The fan integrated circuit board 202 is disposed on the fan central suspension back plate 13. Both ends of the fan integrated circuit board 202 are respectively connected to the fan mounting port 12 through the fan anti-detachment cover 203.

[0068] The outer surface of the fan central suspension back plate 13 is provided with fan control button mounting holes 1301, LED light mounting holes 1302, and fan circuit board power supply socket 1303. The fan control button mounting holes 1301 and LED light mounting holes 1302 are provided with fan control buttons 15 and LED beads 16 connected to the fan module 2. The fan circuit board power supply socket 1303 is connected to the mobile phone charging port through the OTG reverse power extraction structure 17. The outer surface of the fan central suspension back plate 13 is covered with a functional cover plate 18.

[0069] The OTG reverse power supply structure 17 is an integrated plug. The two ends of the OTG reverse power supply structure 17 are respectively provided with a male connector 1701 connected to the power supply socket 1303 of the fan circuit board and a male connector 1702 connected to the mobile phone charging port. An intermediate female connector 1703 is provided between the male connector 1701 and the male connector 1702. A female connector 1704 connected to an external charger is provided on the intermediate female connector 1703.

[0070] The fan central suspension backplate 13 is also embedded with a wireless charging coil, which is connected to 1-2 1-5F farad capacitors.

[0071] In practical implementation, this embodiment embeds the wiring of the OTG reverse power extraction structure 17 into the protective housing, allowing users to simply put on the housing and use it without additional connecting cables. The OTG reverse power extraction structure 17 integrates a power supply female connector, which can replace the original charging interface of the mobile phone. In normal mode, male connector 1701 connects to the mobile phone, and male connector 1702 connects to the fan circuit board, drawing power in reverse via the OTG protocol to drive the fan to operate at low power consumption, suitable for light load scenarios such as daily commuting and short video streaming. When an external charging device is connected, the current can simultaneously power the mobile phone battery and the fan, achieving a seamless experience of cooling while putting on the housing and dual charging while plugging in, without the need to unplug and plug in the OTG connection cable. In addition, the wireless charging coil embedded in the fan's central suspension back plate 13, along with 1-2 1-5F farad capacitors, forms an energy chain of "receive-store-release," enabling the coil to receive wireless power for short periods, effectively reducing the additional heat generated during continuous energy transfer.

[0072] Furthermore, the main housing 1 has a button area corresponding to the mobile phone buttons and several side ventilation holes 18 on its side. The button area has a vertically extending strip button 19. An avoidance groove 20 is provided between the button area and the vertically extending strip button 19. The back of the main housing 1 has a camera cutout area 21 corresponding to the mobile phone camera. A camera protection ring 22 is provided on the outer edge of the camera cutout area 21.

[0073] In practical implementation, the clearance groove can be precisely adapted to the specific mobile phone model and the outline of the mobile phone button, so as to form a dedicated gap space between the air duct and the mobile phone button, avoiding direct obstruction and interference of the air duct structure to the button; the vertical strip-shaped extension button 19 can be made of high elasticity silicone or TPU and other materials to tightly fill the gap between the clearance groove and the physical button of the mobile phone; the vertical strip-shaped extension button 19 needs to have good resilience and wear resistance, while ensuring the air duct sealing and airflow rate, ensuring effective contact between the physical button of the mobile phone and the shell, and not affecting the button triggering operation.

[0074] In addition, during processing, in order to adapt to the injection molding process, the thick-walled areas such as the main air duct 3 and the capillary groove structure 4 can be locally thinned and protruded outwards from the shell, and the flow distribution regulating valve plate design can be adopted. That is, the material thickness of the thick-walled area is reduced by 1-3mm, and simultaneously increased by 1-3mm outwards from the shell, forming a reinforced design for the shell and air duct, avoiding airflow obstruction caused by internal space encroachment. The flow regulating valve plate 7 can also be used as a reinforcing rib, which wraps around the side of the mobile phone in the opposite direction and fits the air duct distribution in a semi-circular shape, enhancing the support force of the side air duct gap and the balanced distribution of air volume.

[0075] Furthermore, this embodiment mainly includes the following steps in use:

[0076] (1) Heat dissipation circulation on the machine surface:

[0077] The heat generated on the phone's surface causes the air in that area to heat up and accumulate. This hot air is then expelled through the capillary grooves, driven by two factors: the suction effect of the negative pressure chamber in the main air duct and the compression effect of the high-pressure, high-speed airflow within the main air duct. After the hot air enters the main air duct, it is finally expelled from the casing through the multiple openings on the bottom, top, and sides, completing the heat dissipation cycle.

[0078] (2) Air duct optimization:

[0079] The airflow delivered by the fan is first smoothly guided by a sloping or curved transition structure to ensure that the airflow flows through the main air duct without vortices and efficiently. Then, the airflow is distributed through a gradual thickness design so that the airflow evenly covers the lower, upper and side areas, while strengthening the coverage of the middle area and improving the overall air duct efficiency.

[0080] (3) Enhanced air intake:

[0081] The fan rotation generates high-pressure, high-speed airflow, which is squeezed through the horn-shaped air outlet channel and thrown into the main air duct through the one-way valve wall. The negative pressure chamber at the end of the main air duct will drive the external airflow to converge and supplement the air intake to avoid no-load. When the air inlet is blocked, the airflow is drawn in from around the capillary groove structure, and after passing through the negative pressure chamber and the one-way valve wall, it is thrown into the main air duct 3 to ensure continuous and stable air intake.

[0082] (4) Charging and heat dissipation coordination:

[0083] When the phone needs to be charged, if a charger or battery pack is used, it can be plugged into the middle female connector to simultaneously power the phone and the fan, achieving simultaneous heat dissipation and charging. In wireless mode, the phone wirelessly supplies power to the supercapacitor, which continuously powers the fan in a "short charge, long discharge" mode to maintain circulating heat dissipation. If the battery pack is used directly, it directly powers the fan, ensuring heat dissipation.

[0084] (5) Button adaptation process:

[0085] When the button on the outer side of the casing is pressed, the operating force is transmitted through the vertically extended strip of the button, while the clearance groove provides space for operation. This design not only ensures the normal operation of the phone's physical buttons, but also avoids air leakage caused by the buttons squeezing the gaps in the air duct, thereby improving heat dissipation efficiency and airflow balance.

[0086] This product can also be used on tablets; simply increase the size. When used on tablets, two or more fan modules can be added to supplement the airflow of the large heat dissipation area.

[0087] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0088] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An improved omnidirectional air curtain heat dissipation protective shell, characterized in that: Includes the main housing and fan module; The fan module is located at the center of the main housing. Main air ducts are symmetrically arranged on both sides of the fan module. The main air duct is a protruding cavity that moves away from the surface of the main housing. The surface of the main housing has a matrix-grid alternating capillary groove structure. A transition surface structure is provided at the connection between the main air duct and the fan module. A negative pressure chamber is provided at the connection between the capillary groove structure and the fan module. The other end of the main air duct and the capillary groove structure is connected to the outside of the housing through a side opening or a back opening. The main air duct adopts a gradually narrowing channel along the direction from the near end to the far end of the fan, that is, the opening gap at the near end is larger than the opening gap at the far end. A flow regulating valve is provided at the connection between the main air duct and the side wall of the housing. The bottom surface of the negative pressure chamber is provided with several air inlets. An isolation wall and a negative pressure one-way valve wall are provided at the connection between the negative pressure chamber and the main air duct. An air inlet channel connected to the main air duct is provided at intervals between the isolation wall and the negative pressure one-way valve wall. The air inlet channel is a funnel-shaped Venturi channel that first contracts and then expands.

2. The improved omnidirectional air curtain cooling protection shell according to claim 1, characterized in that: The transition surface structure is a slope or an arc surface.

3. The improved omnidirectional air curtain cooling protection shell according to claim 1, characterized in that: The main housing is provided with a fan mounting port corresponding to the fan module. A central fan suspension backplate is mounted on the fan mounting port. The fan module is located on the inner side of the central fan suspension backplate. The central fan suspension backplate and the fan mounting port form a fan air inlet. The sidewall of the fan air inlet is a beveled sidewall.

4. The improved omnidirectional air curtain cooling protection shell according to claim 1, characterized in that: The fan module includes fan blades and an integrated fan circuit board connected to the fan blades. The integrated fan circuit board is set on the central suspension back plate of the fan, and both ends of the integrated fan circuit board are respectively connected to the fan mounting port through fan anti-detachment covers.

5. The improved omnidirectional air curtain cooling protection shell according to claim 1, characterized in that: The outer surface of the central suspension back plate of the fan is provided with fan control button mounting holes, LED light mounting holes and fan circuit board power supply sockets. The fan control button mounting holes and LED light mounting holes are provided with fan control buttons and LED beads connected to the fan module. The fan circuit board power supply socket is connected to the mobile phone charging port through an OTG reverse power supply structure.

6. An improved omni-directional air curtain heat sink protective enclosure in accordance with claim 5, wherein: The OTG reverse power supply structure is an integrated plug. The two ends of the OTG reverse power supply structure are respectively provided with a male connector 1 that connects to the power supply socket of the fan circuit board and a male connector 2 that connects to the mobile phone charging port. A middle female connector is provided between the male connector 1 and the male connector 2, and a female connector for connecting to an external charger is provided on the middle female connector.

7. The improved omnidirectional air curtain cooling protection shell according to claim 1, characterized in that: The fan's central suspension backplate is also equipped with a wireless charging coil, which is connected to 1-2 1-5F farad capacitors.

8. An improved omnidirectional air curtain cooling protection shell according to claim 1, characterized in that: The outer surface of the central suspension backplate of the fan is covered with a functional cover plate.

9. The improved omnidirectional air curtain cooling protection shell according to claim 1, characterized in that: The main housing has a button area corresponding to the mobile phone buttons and several side ventilation holes on its side. The button area has vertically extended strip buttons, and a clearance groove is provided between the button area and the vertically extended strip buttons.

10. The improved omnidirectional air curtain cooling protection shell according to claim 1, characterized in that: The back of the main housing is provided with a camera cutout area corresponding to the mobile phone camera, and a camera protection ring is provided on the outer edge of the camera cutout area.

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