Laptop computer and centrifugal fan module thereof

Abstract

The utility model provides a notebook computer and centrifugal fan module thereof. Wherein centrifugal fan module, including a fan casing, an impeller and a static electricity dust collecting fence unit. Fan casing includes a first plate body, a second plate body and a side wall, the first plate body with the second plate body each other opposite, one side of the side wall connects first plate body, the other side of the side wall connects second plate body, the first plate body is formed with an air inlet, the first plate body, the second plate body and the side wall jointly define a containing space and an air outlet. Impeller is arranged in the containing space, wherein, the impeller is suitable for driving a airflow, makes the airflow from the air inlet into the containing space, and leaves the containing space through the air outlet. The static electricity dust collecting fence unit corresponds to the air inlet.

Description

Technical Field

[0001] The embodiments of this utility model relate to a centrifugal fan module, and more particularly to a centrifugal fan module with a dust collection function. Background Technology

[0002] Known electronic products (such as laptops and desktop computers) generally use fans and heatsinks for active cooling to maintain system stability and performance. However, over time, suspended particles (such as dust) from the external environment can accumulate around the fans and heatsink fins, obstructing airflow, reducing cooling efficiency, and leading to abnormal fan speeds, increased noise, and even overheating causing automatic system shutdown or damage to internal components, seriously affecting product lifespan and user experience.

[0003] Currently, there is a lack of effective prevention mechanisms on the market to prevent suspended particles (such as dust) from entering or accumulating on the heat sink fins. Users often need to disassemble and clean the device regularly, which is cumbersome and risky. Therefore, how to effectively prevent dust accumulation without affecting the size of the device and the heat dissipation structure has become a technical problem that urgently needs to be solved. Utility Model Content

[0004] This utility model provides a centrifugal fan module to address the problems of known technologies. The module includes a fan housing, an impeller, and an electrostatic dust collection grille unit. The fan housing includes a first plate, a second plate, and a side wall. The first and second plates are opposite to each other. One side of the side wall is connected to the first plate, and the other side is connected to the second plate. An air inlet is formed on the first plate. The first plate, the second plate, and the side wall together define a receiving space and an air outlet. The impeller is disposed within the receiving space and is adapted to drive an airflow, causing the airflow to enter the receiving space through the air inlet and exit the receiving space through the air outlet. The electrostatic dust collection grille unit corresponds to the air inlet.

[0005] In one embodiment, the electrostatic dust collection grid unit includes a first electrical grid and a second electrical grid, wherein the airflow first passes through the first electrical grid and then through the second electrical grid.

[0006] In one embodiment, the centrifugal fan module further includes an electrostatic ion generator, wherein the electrostatic ion generator is adapted to apply an electric field to the airflow, causing the particles in the airflow to become charged.

[0007] In one embodiment, the impeller includes a hub and a plurality of blades connected to the hub, with the end of the ion generator corresponding to the hub.

[0008] In another embodiment, the present invention provides a laptop computer, including a computer casing and a centrifugal fan module. The computer casing has an air inlet and an air outlet. The centrifugal fan module is disposed within the computer casing and includes a fan housing, an impeller, and an electrostatic dust collection grille unit. The fan housing includes a first plate, a second plate, and a side wall. The first plate and the second plate are opposite to each other. One side of the side wall is connected to the first plate, and the other side of the side wall is connected to the second plate. An air inlet is formed on the first plate. The first plate, the second plate, and the side wall together define an accommodating space and an air outlet. The air inlet corresponds to the air inlet port, and the air outlet corresponds to the air outlet port. The impeller is disposed within the accommodating space, wherein the impeller is adapted to drive an airflow, causing the airflow to enter the accommodating space from the air inlet and then leave the accommodating space through the air outlet. The electrostatic dust collection grille unit corresponds to the air inlet port.

[0009] In one embodiment, the electrostatic dust collection grid unit is fixed to the fan housing, and the electrostatic ion generator is fixed to the computer housing.

[0010] In one embodiment, the laptop computer further includes a circuit board, a heat source, a heat pipe, and a heat sink, wherein the heat source is disposed on the circuit board, the heat pipe is thermally connected to the heat source and the heat sink, and the heat sink is located between the air outlet and the air vent.

[0011] In one embodiment, in a heat dissipation mode, the first electrical barrier is connected to a negative voltage, and the second electrical barrier is grounded or connected to a positive voltage; in a cleaning mode, the first electrical barrier is grounded or connected to a positive voltage, and the second electrical barrier is connected to a negative voltage.

[0012] The centrifugal fan module of this embodiment uses electrostatic principles to provide dust collection and removal functions, and can be applied inside laptops. Through components such as the electrostatic dust collection grille unit and the electrostatic ion generator, airborne particles are charged and attracted to the electrostatic dust collection grille unit, preventing them from further entering the impeller and heat sink. This not only effectively maintains heat dissipation performance and extends device lifespan, but also reduces fan noise, improving overall product quality and user satisfaction. Attached Figure Description

[0013] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0014] Figure 1 This is a diagram showing an embodiment of the centrifugal fan module of the present invention.

[0015] Figure 2 This is an exploded view showing the centrifugal fan module of an embodiment of the present invention.

[0016] Figure 3 This is an exploded view showing a portion of the structure of a laptop computer according to an embodiment of the present invention.

[0017] Figure 4 This is a partial structure of a laptop computer that shows an embodiment of the present invention.

[0018] Figure label:

[0019] N: Laptop

[0020] F: Centrifugal fan module

[0021] 1: Fan housing

[0022] 11: First Plate

[0023] 12: Second plate

[0024] 13: Side wall

[0025] 141: Air Inlet

[0026] 142: Air vent

[0027] 2: Impeller

[0028] 21: Wheel hub

[0029] 22: Fan blade

[0030] 3: Electrostatic dust collection fence unit

[0031] 31: First electrical fence

[0032] 32: Second electrical fence

[0033] 4: Electrostatic ion generator

[0034] 91: Computer casing

[0035] 911: Intake port

[0036] 912: Air outlet port

[0037] 92: Circuit board

[0038] 93: Heat source

[0039] 94: Heat pipe

[0040] 95: Radiator Detailed Implementation

[0041] Figure 1 This is a diagram showing an embodiment of the centrifugal fan module of the present invention. Figure 2This is an exploded view showing a centrifugal fan module according to an embodiment of the present invention. Referring to Figures 1 and 2, the centrifugal fan module F of this embodiment includes a fan housing 1, an impeller 2, and an electrostatic dust collection grid unit 3. The fan housing includes a first plate 11, a second plate 12, and a side wall 13. The first plate 11 and the second plate 12 are opposite to each other. One side of the side wall 13 is connected to the first plate 11, and the other side of the side wall 13 is connected to the second plate 12. An air inlet 141 is formed on the first plate 11. The first plate 11, the second plate 12, and the side wall 13 together define an accommodating space (not shown) and an air outlet 142. The impeller 2 is disposed within the accommodating space (not shown), wherein the impeller 2 is adapted to drive an airflow, causing the airflow to enter the accommodating space (not shown) from the air inlet 141 and exit the accommodating space (not shown) through the air outlet 142. The electrostatic dust collection grid unit 3 corresponds to the air inlet 141.

[0042] Reference Figure 2 In one embodiment, the electrostatic dust collection grid unit 3 includes a first electrical grid 31 and a second electrical grid 32. The airflow first passes through the first electrical grid 31 and then through the second electrical grid 32. In one embodiment, the first electrical grid 31 is connected to a negative voltage (-10~30 kV), and the second electrical grid 32 is grounded or connected to a positive voltage (0~+ a few kV).

[0043] Referring to Figures 1 and 2, in one embodiment, the centrifugal fan module F further includes an electrostatic ion generator 4, wherein the electrostatic ion generator 4 is adapted to apply an electric field to the airflow, causing the particles in the airflow to become charged.

[0044] In one embodiment, the electrostatic ion generator 4 may be omitted, and the electrostatic dust collection fence unit 3 alone can provide the effect of particle collection. The above disclosure does not limit the present invention.

[0045] Referring to Figures 1 and 2, in one embodiment, the impeller 2 includes a hub 21 and a plurality of blades 22 connected to the hub 21, with the end of the ion generator 4 corresponding to the hub 21. This allows the particles in the airflow to be sufficiently charged without excessively affecting the airflow.

[0046] Figure 3 This is an exploded view showing a portion of the structure of a laptop computer according to an embodiment of the present invention. Figure 4This diagram shows a partial structure of a laptop computer according to an embodiment of the present invention. Referring to Figures 3 and 4, in another embodiment, the present invention provides a laptop computer N, including a computer casing 91 and the aforementioned centrifugal fan module F. The computer casing 91 has an air inlet port 911 and an air outlet port 912. The centrifugal fan module F is disposed within the computer casing 91. The aforementioned air inlet of the centrifugal fan module F corresponds to the air inlet port 911, and the aforementioned air outlet of the centrifugal fan module F corresponds to the air outlet port 912.

[0047] Reference Figure 4 In one embodiment, the electrostatic dust collection grid unit 3 is fixed to the fan housing 1, and the electrostatic ion generator 4 is fixed to the computer housing 91. The above disclosure does not limit the present invention; for example, in another embodiment, the electrostatic ion generator 4 may also be fixed to the fan housing 1.

[0048] Referring to Figures 3 and 4, in one embodiment, the laptop computer N further includes a circuit board 92, a heat source 93, a heat pipe 94, and a heat sink 95. The heat source 93 is disposed on the circuit board 92, the heat pipe 94 is thermally connected to the heat source 93 and the heat sink 95, and the heat sink 95 is located between the air outlet and the air outlet port 912.

[0049] The following describes the operation flow of the centrifugal fan module F according to an embodiment of the present invention. In one embodiment, the centrifugal fan module of the present invention combines electrostatic dust removal technology with high-voltage driven dust removal to achieve efficient collection and long-term maintenance of airborne particles. Referring to Figures 1, 2, 3, and 4, firstly, when the airflow enters the computer casing 91, the electrostatic ion generator 4 is powered by a power management and boost current limiting circuit, providing a high potential difference of several kilovolts and current limiting to ionize the passing airflow, charging the particles for subsequent collection. Next, the charged particles are attracted to the dust collection area of ​​the electrostatic dust collection fence unit 3 under the drive of the electric field. At this time, the centrifugal fan module F is in a heat dissipation mode, the first electrical fence 31 is negatively charged, and the second electrical fence 32 is grounded or positively charged. In one embodiment, the electrostatic dust collection fence unit 3 has a high opening ratio to balance low voltage loss and effective collection area.

[0050] When the centrifugal fan module F is in a cleaning mode, the control unit (not shown) can provide polarity reversal or high-potential short pulse depolarization, for example, grounding or connecting the first electrical barrier 31 to positive voltage and the second electrical barrier 32 to negative voltage. This loosens the adsorbed particles due to the repulsive force of the same polarity and the reduction in adsorption energy. In another embodiment, the aforementioned short pulse can induce a controlled local electric arc under energy-limited and current-limited conditions, using the instantaneous thermal effect to burn / embrittle / desorb particles and contaminants attached to the dust collection plate surface, preparing for the backflushing cleaning process.

[0051] Furthermore, the dynamic control of the centrifugal fan module F is described below. In one embodiment, the centrifugal fan module F rotates forward in cooling mode to provide cooling airflow. The control unit (not shown) automatically adjusts the counter bias and fan speed curves based on sensor feedback (speed, power consumption, temperature; optional differential pressure / high-voltage current or dust collection status) to achieve a balance between collection efficiency and energy consumption / noise / voltage loss. When cleaning is required based on timing or the above indicators, the centrifugal fan module F is switched to the cleaning mode. In this cleaning mode, the centrifugal fan module F reverses (backflush), and multiple short reverse rotations can be used to form a reverse airflow to guide loosened particles out of the centrifugal fan module F.

[0052] In the above embodiments, the operation process and dynamic control of the centrifugal fan module F can be achieved through automation.

[0053] Referring to Figures 3 and 4, in one embodiment, the heat sink 95 can also be charged with the same polarity as the electrostatic ion generator 4, thereby preventing particles from being adsorbed onto the heat sink 95.

[0054] The centrifugal fan module of this embodiment uses electrostatic principles to provide dust collection and removal functions, and can be applied inside laptops. Through components such as the electrostatic dust collection grille unit and the electrostatic ion generator, airborne particles are charged and attracted to the electrostatic dust collection grille unit, preventing them from further entering the impeller and heat sink. This not only effectively maintains heat dissipation performance and extends device lifespan, but also reduces fan noise, improving overall product quality and user satisfaction.

[0055] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A centrifugal fan module, characterized in that, include: A fan housing includes a first plate, a second plate, and a side wall. The first plate and the second plate are opposite to each other. One side of the side wall is connected to the first plate, and the other side of the side wall is connected to the second plate. An air inlet is formed on the first plate. The first plate, the second plate, and the side wall together define an accommodating space and an air outlet. An impeller is disposed within the accommodating space, wherein the impeller is adapted to drive an airflow, causing the airflow to enter the accommodating space from the air inlet and exit the accommodating space through the air outlet; and An electrostatic dust collection grid unit is positioned opposite the air inlet.

2. The centrifugal fan module as described in claim 1, characterized in that, The electrostatic dust collection grid unit includes a first electrical grid and a second electrical grid. The airflow first passes through the first electrical grid and then through the second electrical grid.

3. The centrifugal fan module as described in claim 1, characterized in that, It also includes an electrostatic ion generator, wherein the electrostatic ion generator is adapted to apply an electric field to the airflow, causing the particles in the airflow to become charged.

4. The centrifugal fan module as described in claim 3, characterized in that, The impeller includes a hub and multiple blades connected to the hub, with the end of the ion generator corresponding to the hub.

5. A laptop computer, characterized in that, include: A computer casing having an air inlet port and an air outlet port; as well as A centrifugal fan module, located within the computer casing, includes: A fan housing includes a first plate, a second plate, and a side wall. The first plate and the second plate are opposite to each other. One side of the side wall is connected to the first plate, and the other side of the side wall is connected to the second plate. An air inlet is formed on the first plate. The first plate, the second plate, and the side wall together define an accommodating space and an air outlet. The air inlet corresponds to the air intake port, and the air outlet corresponds to the air exhaust port. An impeller is disposed within the accommodating space, wherein the impeller is adapted to drive an airflow, causing the airflow to enter the accommodating space from the air inlet and then exit the accommodating space through the air outlet; and An electrostatic dust collection grid unit is positioned opposite the air inlet.

6. The laptop computer as described in claim 5, characterized in that, The electrostatic dust collection grid unit includes a first electrical grid and a second electrical grid. The airflow first passes through the first electrical grid and then through the second electrical grid.

7. The laptop computer as described in claim 6, characterized in that, It also includes an electrostatic ion generator, wherein the electrostatic ion generator is adapted to apply an electric field to the airflow, causing the particles in the airflow to become charged.

8. The laptop computer as described in claim 7, characterized in that, The electrostatic dust collection grid unit is fixed to the fan housing, and the electrostatic ion generator is fixed to the computer housing.

9. The laptop computer as claimed in claim 6 or 7, characterized in that, It further includes a circuit board, a heat source, a heat pipe, and a radiator, wherein the heat source is disposed on the circuit board, the heat pipe is thermally connected to the heat source and the radiator, and the radiator is located between the air outlet and the air outlet port.

10. The laptop computer as claimed in claim 6 or 7, characterized in that, In a heat dissipation mode, the first electrical barrier is connected to a negative voltage, and the second electrical barrier is grounded or connected to a positive voltage. In a cleaning mode, the first electrical barrier is grounded or connected to a positive voltage, and the second electrical barrier is connected to a negative voltage.

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