Laptop cooling fan

Abstract

The application discloses a notebook computer cooling fan, which comprises an upper cover plate, a metal bottom plate and an impeller between the upper cover plate and the metal bottom plate, the metal bottom plate edge is provided with a side wall plate, the side wall plate is provided with an air outlet on one side, the upper cover plate is connected with the side wall plate through a plurality of pairs of bolts and holes, the upper cover plate is provided with an upper air inlet, the metal bottom plate is provided with a positioning cylinder in the center, the impeller further comprises a hub with a shaft core rotor part at the bottom and a plurality of interval distributed blades arranged on the outer side wall of the hub, the shaft core rotor part of the impeller is rotationally connected with the positioning cylinder of the metal bottom plate, the blades of the impeller are arc-shaped in the radial direction, and the height of the blades of the impeller gradually increases from the side close to the hub to the side far from the hub. The cooling fan reduces the overall weight of the shaft fan and the noise generated when the gas enters the impeller along the axial direction from the air inlet under the pressure difference and is discharged from the impeller along the radial direction.

Description

Technical Field

[0001] This invention relates to a laptop cooling fan, belonging to the field of electronic product heat dissipation. Background Technology

[0002] Generally speaking, smart terminals are a type of embedded computer system device. During normal operation, the temperature of the internal electronic components gradually increases over time. High temperatures can affect the normal operation of these components. To maintain normal operation, cooling fans are mainly used to displace the hot air inside the device, achieving a cooling effect. However, the fans used in existing smart terminals are quite noisy, affecting the comfort of the user. Summary of the Invention

[0003] The purpose of this invention is to provide a laptop cooling fan that reduces the overall weight of the axial fan and also reduces the noise generated when gas enters the impeller axially from the air inlet under pressure difference and is then discharged radially from the impeller.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a laptop cooling fan, comprising: an upper cover plate, a metal base plate, and an impeller located between the upper cover plate and the metal base plate. The metal base plate has a side wall plate at its edge, and an air outlet is opened on one side of this side wall plate. The upper cover plate and the side wall plate are connected by a plurality of pairs of pins and holes. The upper cover plate has an upper air inlet. A positioning cylinder is provided at the center of the metal base plate. The impeller further comprises a hub with a shaft rotor at the bottom and a plurality of spaced blades disposed on the outer side wall of the hub. The shaft rotor of the impeller is rotatably connected to the positioning cylinder of the metal base plate. The blades of the impeller are arc-shaped in the radial direction. The height of the blades of the impeller gradually increases from the side closer to the hub to the side farther from the hub.

[0005] The metal base plate has several strip-shaped through holes spaced circumferentially around the positioning cylinder. A reinforcing rib is provided between adjacent strip-shaped through holes. The strip-shaped through holes are covered by a plastic sheet layer. The surface of this plastic sheet layer facing the impeller has several outwardly protruding parts spaced apart. The protruding parts are triangular in shape. Several pairs of arc-shaped support bars are spaced apart on the inner sidewall of the strip-shaped through holes of the metal base plate. Two arc-shaped support bars in each pair are arranged facing each other. These arc-shaped support bars are embedded in the sidewall of the plastic sheet layer.

[0006] The following are further improvements to the above technical solution:

[0007] 1. In the above scheme, an air inlet is opened between the strip-shaped through hole of the metal base plate and the shaft rotor part.

[0008] 2. In the above scheme, the lower air inlet is located directly below the impeller.

[0009] Due to the application of the above technical solution, the present invention has the following advantages and effects compared with the prior art:

[0010] 1. The present invention relates to a laptop cooling fan, wherein a metal base plate is provided with a plurality of strip-shaped through holes spaced circumferentially around the positioning cylinder, and a reinforcing rib is provided between adjacent strip-shaped through holes. The strip-shaped through holes are covered with a plastic plate layer, and the surface of the plastic plate layer facing the impeller is provided with a plurality of outwardly protruding protrusions spaced apart. This reduces the overall weight of the axial fan and also reduces the noise generated when gas enters the impeller axially from the air inlet under pressure difference and is then discharged radially from the impeller, thereby providing comfort to the user.

[0011] 2. The laptop cooling fan of the present invention has several pairs of arc-shaped support bars spaced apart on the inner sidewall of the strip-shaped through hole of its metal base plate. Two arc-shaped support bars in each pair are arranged facing each other. These arc-shaped support bars are embedded in the sidewall of the plastic plate layer, which improves the bonding strength between the metal base plate and the plastic plate layer, thereby improving the reliability and service life of the fan. In addition, the blades of its impeller are arc-shaped in the radial direction. The height of the impeller blades gradually increases from the side closer to the hub to the side farther from the hub, which improves the overall air sweeping ability of the fan, thereby dissipating more heat in a narrow space per unit time, thus improving the overall heat dissipation performance. Attached Figure Description

[0012] Appendix Figure 1 This is a top view of the cooling fan structure of a laptop computer according to the present invention;

[0013] Appendix Figure 2 This is a bottom view of the cooling fan structure of the laptop computer of the present invention;

[0014] Appendix Figure 3 This is a partial structural diagram of the laptop cooling fan of the present invention;

[0015] Appendix Figure 4 This is an exploded view of the laptop cooling fan of the present invention.

[0016] In the above attached diagrams: 1. Top cover plate; 2. Metal base plate; 3. Impeller; 31. Hub; 32. Blade; 301. Shaft rotor section; 4. Side wall plate; 5. Air outlet; 6. Upper air inlet; 7. Positioning cylinder; 8. Strip-shaped through hole; 9. Reinforcing rib; 10. Plastic sheet layer; 101. Recessed area; 11. Protrusion; 12. Arc-shaped support; 13. Lower air inlet; 141. Pin; 142. Insertion hole. Detailed Implementation

[0017] In the description of this patent, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" 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 patent based on the specific circumstances.

[0018] Example 1: A laptop cooling fan includes: an upper cover plate 1, a metal base plate 2, and an impeller 3 located between the upper cover plate 1 and the metal base plate 2. The metal base plate 2 has a side wall plate 4 at its edge, and an air outlet 5 is opened on one side of this side wall plate 4. The upper cover plate 1 has an upper air inlet 6. A positioning cylinder 7 is provided at the center of the metal base plate 2. The impeller 3 further includes a hub 31 with a shaft rotor portion 301 at the bottom and a plurality of spaced blades 32 disposed on the outer side wall of the hub 31. The shaft rotor portion 301 of the impeller 3 is rotatably connected to the positioning cylinder 7 of the metal base plate 2. The blades 32 of the impeller 3 are arc-shaped in the radial direction, and the height of the blades 32 of the impeller 3 gradually increases from the side closer to the hub 31 to the side farther away from the hub 31.

[0019] The inner wall of the strip-shaped through hole 8 of the metal base plate 2 is provided with several pairs of arc-shaped support bars 12 at intervals. Two arc-shaped support bars 12 in each pair are arranged facing each other. The arc-shaped support bars 12 are embedded in the side wall of the plastic plate layer 10. The metal base plate 2 is provided with several strip-shaped through holes 8 at intervals around the periphery of the positioning cylinder 7. A reinforcing rib 9 is provided between adjacent strip-shaped through holes 8. The strip-shaped through holes 8 are covered by a plastic plate layer 10. The surface of the plastic plate layer 10 facing the impeller 3 is provided with several outwardly protruding protrusions 11 at intervals.

[0020] The surface of the plastic sheet layer 10 facing the impeller 3 has a recessed area 101, and the protrusion 11 is provided in the recessed area 101.

[0021] An air inlet 13 is provided between the strip-shaped through hole 8 of the metal base plate 2 and the shaft rotor part 301.

[0022] The upper air inlet 6 of the upper cover plate 1 is a circular through hole.

[0023] The aforementioned upper cover plate 1 and side wall plate 4 are connected by several pairs of pins 141 and holes 142.

[0024] Example 2: A laptop cooling fan includes: an upper cover plate 1, a metal base plate 2, and an impeller 3 located between the upper cover plate 1 and the metal base plate 2. The metal base plate 2 has a side wall plate 4 at its edge, and an air outlet 5 is opened on one side of this side wall plate 4. The upper cover plate 1 has an upper air inlet 6. A positioning cylinder 7 is provided at the center of the metal base plate 2. The impeller 3 further includes a hub 31 with a shaft rotor portion 301 at the bottom and a plurality of spaced blades 32 disposed on the outer side wall of the hub 31. The shaft rotor portion 301 of the impeller 3 is rotatably connected to the positioning cylinder 7 of the metal base plate 2. The blades 32 of the impeller 3 are arc-shaped in the radial direction, and the height of the blades 32 of the impeller 3 gradually increases from the side closer to the hub 31 to the side farther away from the hub 31.

[0025] The inner wall of the strip-shaped through hole 8 of the metal base plate 2 is provided with several pairs of arc-shaped support bars 12 at intervals. Two arc-shaped support bars 12 in each pair are arranged facing each other. The arc-shaped support bars 12 are embedded in the side wall of the plastic plate layer 10. The metal base plate 2 is provided with several strip-shaped through holes 8 at intervals around the periphery of the positioning cylinder 7. A reinforcing rib 9 is provided between adjacent strip-shaped through holes 8. The strip-shaped through holes 8 are covered by a plastic plate layer 10. The surface of the plastic plate layer 10 facing the impeller 3 is provided with several outwardly protruding protrusions 11 at intervals.

[0026] The surface of the plastic sheet layer 10 facing the impeller 3 has a recessed area 101, and the protrusion 11 is provided in the recessed area 101. The protrusion 11 is triangular in shape.

[0027] The aforementioned lower air inlet 13 is located directly below the impeller 3.

[0028] An air inlet 13 is provided between the strip-shaped through hole 8 of the metal base plate 2 and the shaft rotor part 301.

[0029] When using the aforementioned laptop cooling fan, the overall weight of the axial fan is reduced, and the noise generated when gas enters the impeller axially from the air inlet under pressure difference and is then discharged radially from the impeller is also reduced, thus providing user comfort. Furthermore, the inner wall of the strip-shaped through-holes in the metal base plate is provided with several pairs of arc-shaped supports at intervals. Two arc-shaped supports in each pair are arranged facing each other. These arc-shaped supports are embedded in the side wall of the plastic sheet layer, improving the bonding strength between the metal base plate and the plastic sheet layer, thereby improving the fan's reliability and lifespan. Additionally, the impeller blades are arc-shaped in the radial direction, and the height of the impeller blades gradually increases from the side closer to the hub to the side farther from the hub, improving the overall sweeping capacity of the fan. This allows more heat to be discharged per unit time within a narrow space, thus improving overall heat dissipation performance.

[0030] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A laptop cooling fan, characterized in that: include: The upper cover plate (1), the metal base plate (2), and the impeller (3) located between the upper cover plate (1) and the metal base plate (2) have a side wall plate (4) on the edge of the metal base plate (2), and an air outlet (5) is opened on one side of this side wall plate (4). The upper cover plate (1) and the side wall plate (4) are connected by several pairs of pins (141) and holes (142). The upper cover plate (1) has an upper air inlet (6). A positioning cylinder (7) is provided in the center of the metal base plate (2). The impeller ( 3) Further includes a hub (31) with a shaft rotor portion (301) at the bottom and a plurality of spaced blades (32) disposed on the outer side wall of the hub (31). The shaft rotor portion (301) of the impeller (3) is rotatably connected to the positioning cylinder (7) of the metal base plate (2). The blades (32) of the impeller (3) are arc-shaped in the radial direction. The height of the blades (32) of the impeller (3) gradually increases from the side close to the hub (31) to the side away from the hub (31). The metal base plate (2) has several strip-shaped through holes (8) spaced apart circumferentially around the positioning cylinder (7). There is a reinforcing rib (9) between adjacent strip-shaped through holes (8). The strip-shaped through holes (8) are covered by a plastic sheet layer (10). The surface of this plastic sheet layer (10) facing the impeller (3) is provided with several outwardly protruding protrusions (11). The protrusions (11) are triangular in shape. Several pairs of arc-shaped supports (12) are provided at intervals on the inner sidewall of the strip-shaped through holes (8) of the metal base plate (2). Two arc-shaped supports (12) in each pair of arc-shaped supports (12) are arranged facing each other. The arc-shaped supports (12) are embedded in the sidewall of the plastic sheet layer (10).

2. The laptop cooling fan according to claim 1, characterized in that: An air inlet (13) is provided between the strip-shaped through hole (8) of the metal base plate (2) and the shaft rotor part (301).

3. The laptop cooling fan according to claim 2, characterized in that: The lower air inlet (13) is located directly below the impeller (3).

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