JP3062571B2 - Fluid drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive device for use in a cooling system for an electronic device, and more particularly to a drive device having a new arrangement structure for reducing turbulence, reducing noise and improving cooling efficiency. The present invention relates to a driving device for generating a cooling airflow passing through a basin.

[0002]

BACKGROUND OF THE INVENTION A major limitation in improving the performance and structure of recent electronic devices is the need for heat dissipation and temperature control of the electronic device. The design related to the heat dissipation of the electronic device due to the requirement of the temperature control imposes a space restriction and a requirement of the power supply. Further, when a fan is used, noise generated by the operation of the fan must be controlled and reduced.

As electronic devices become smaller and electronic circuits are manufactured with relatively high density, high speed operation, and relatively low power consumption,
There is also an increasing demand for improved heat dissipation systems. In particular, when an electronic circuit is further integrated, it is necessary to radiate heat generated per unit volume at a relatively high speed.
On the other hand, electronic circuits with relatively high performance tend to be more sensitive to temperature, requiring more strict temperature control. Also, the need for stricter temperature control needs to be met by the relatively small space available to place the cooling system, as modern electronic devices and air moving devices are already becoming smaller.

In order to improve the heat dissipation capability of the air moving device,
Most directly, consideration must be given to fans and cooling airflow through electronic circuits for heat dissipation. 5 and 6 show a fan 1 most commonly used to cool electronic devices. The inlet and outlet of the airflow are arranged in the same direction, and the fan blade 2 of the fan 1 is in the same direction as the direction of the airflow and rotates along an axis perpendicular to the plane of the fan blade 2. This configuration creates a direct pressure differential between the airflow inlet and outlet, creating a large airflow that cools and dissipates the heat generated by the electronics.

[0005]

However, such a structure has several problems. The first problem is that the airflow inlet and outlet must be arranged so that the airflow flows toward the electronic circuit, so that it is difficult to arrange an optimal space, and the arrangement of the cooling system is fixed and the adaptability is reduced. It is lacking in. Another problem is that various problems occur due to the characteristics of turbulence generated in the basin. That is, the rotation of the fan blades not only causes turbulence in the air near the fan blades, but also propagates the characteristics of the turbulence throughout the path of the air flow from the inlet to the outlet of the cooling system, thereby stabilizing the air flow, Affects the operating efficiency of the vehicle, causing problems such as an increase in noise.

[0006] Therefore, there is still a need for a new system configuration and design method for a cooling system using fans and airflow ducts to solve these problems. In particular, in order to generate a relatively stable and gentle airflow to achieve a relatively high fan efficiency, these new system configurations and design methods must reduce turbulence in the basin of the airflow path. . Furthermore, if the turbulence in the basin is reduced, the noise of the fan can be reduced.

[0007] The present invention provides a spatial arrangement with adaptability, and the airflow guide system capable of solving the problems of by reducing the turbulence in the basin of the prior art, a fan, an outlet da
And to provide a driving apparatus which can be used as a cooling system including a transfected.

[0008]

According to one aspect of the present invention, there is provided an airflow guide system having a fan and an air inlet duct for guiding an airflow to the fan. And the
An outlet duct for incorporating a fan, wherein the inlet duct has a turbulence reduction grid that reduces turbulence of air by dividing the inlet duct into a plurality of isolated flow paths. I do.

According to the present invention, a cooling system including an airflow guide system and a fan is provided, so that an adaptive spatial arrangement is possible and turbulence in a basin can be reduced.

[0010] Preferably, before Symbol outlet duct and the fan, the a is directed in a different direction the direction of the inlet duct, said inlet duct to relieve the turbulence of the air flow flowing therethrough, in order to reduce Is connected to the outlet duct by a bent duct connector bent at an obtuse angle.

According to the present invention, the directions of the inlet and the outlet of the airflow are allowed to be different from each other, and a spatial arrangement having flexibility is possible. Further, since the airflow guide system is formed by a duct designed to minimize the reflection of the airflow, turbulence in the basin can be reduced.

Preferably, the fan is supported by a motor suspended from the bending duct connector to reduce turbulence of air flow, and is driven by the motor, and the fan has a spiral shape in the same direction. The cooling system includes a plurality of fan blades that are formed to have a curved blade surface that is configured to reduce turbulence of airflow, and the cooling system is configured to reduce backflow due to air resistance and further reduce turbulence of airflow. And a guide device having a notch formed near the tip of the fan blade.

According to the present invention, since the fan is suspended from the wall of the duct of the airflow guide system, a rib for supporting the fan blade is not required, so that the noise can be reduced and the airflow and the rib can be reduced. Noise due to interference between the two can be eliminated.

[0014] More preferably, the inlet duct is provided with one or more openings for increasing the flow velocity of the airflow to improve the cooling efficiency.

Further, the present invention provides an impeller device main body, an impeller having a rotatable fan blade that is rotatably provided on the impeller device main body and whose axial direction and radial direction are defined, and the impeller device main body. Connected to
A first fluid guide device that guides the fluid supplied along the radial direction to the impeller, and a first fluid guide device that is connected to the impeller device main body and guides the fluid away from the impeller device along the axial direction. The present invention provides a drive device used as an impeller device, comprising: a fluid guide device;

Preferably, the impeller is a fan, the first fluid guide device is a fluid inlet duct, and the inlet duct divides the inlet duct into a plurality of isolated flow paths. Wherein the second fluid guide device is a fluid outlet duct.

[0017] Preferably, the impeller device comprises:
The apparatus further includes a third fluid guide device rotatably provided on the impeller device main body and configured to concentrate the fluid toward a region defined in the axial direction.

[0018] The third fluid guiding device comprises a plurality of flat peripheral portions and a plurality of arcuate peripheral portions, wherein the flat peripheral portions and the arcuate peripheral portions are alternately arranged; The third fluid guide device preferably has a notch near the tip of the fan blade to reduce backflow due to resistance of the fluid and further reduce turbulence of the fluid.

[0019]

Embodiments of the present invention will be described below with reference to the accompanying drawings. First, an embodiment in which the driving device according to the present invention is used as a cooling system will be described. 1 to 3 are a left side view, a plan view, and a front view, respectively, illustrating an embodiment of a cooling system according to the present invention. As shown in FIGS. 1 to 3, the driving device 100 as a cooling system includes a fan 110 and an airflow guide system having an air inlet duct 120 for guiding the airflow to the fan 110. The air inlet duct 120 divides the duct into a plurality of isolated flow passages 130.
And a turbulence reduction grid 125 that reduces the turbulence of the air by dividing into two. The airflow guide system further includes an outlet duct 140 for incorporating the fan 110, wherein the outlet duct 140 and the fan 110
Air inlet duct 120 for guiding airflow to fan 110
Is oriented in a different direction. For example, as shown in FIG. 2, the outlet duct 140 and the fan 110 are directed in a direction perpendicular to the air inlet duct 120 and guide the air flow out of the fan 110. The air inlet duct 120 is connected to the outlet duct 140 by a bent duct connector 145 that is bent at an obtuse angle to reduce and reduce the turbulence of the airflow flowing therethrough. As shown in FIGS. 2 and 3, the fan 110 is provided with the rotating shaft 150 suspended from the bending duct connector 145, so that the fan 110 is structurally supported on the rotating shaft 150, and reduces the turbulence of the airflow. Further, the fan 110 has a plurality of fan blades 160 formed to have a curved blade surface that forms a spiral shape in the same direction, and reduces turbulence of airflow. The guide device 190 has a notch 170 formed near the tip of the fan blade 160.
This reduces backflow due to air resistance and further reduces turbulence of air. Further, as shown in FIG. 2, for example, the air inlet duct 120 is provided with an opening 180 that increases the flow rate of the airflow and improves the cooling efficiency.

As described above, the present invention provides an airflow guide system.
Providing a flexible spatial arrangement by providing a cooling system comprising a cooling system , a fan, and an outlet duct ;
The problem of the prior art is solved by reducing turbulence in the basin. In particular, the cooling system according to the present invention allows an airflow inlet and an outlet to be in different directions, and provides an airflow guide system that enables an adaptive spatial arrangement. Further, the airflow guide system includes an isolated area for reducing turbulence in the basin. Further, since the airflow guide system is formed by a duct designed to minimize the reflection of the airflow, turbulence in the basin can be reduced. Further, in the cooling system of the present invention, a motor is mounted on the fan, and the motor is suspended from the wall of the duct of the airflow guide system, thereby eliminating the need for ribs for supporting the fan blades and reducing noise. The noise can be reduced and the noise due to the interference between the airflow and the rib can be eliminated. In addition, since the fan blades are configured with blade surfaces curved so as to have a spiral shape between adjacent fan blades,
Turbulence generated by rotation of the fan blades can be reduced. In addition, since the guide device has a notch near the tip of the fan blade, the backflow caused by the rotational resistance of the fan blade can be minimized, and the turbulent airflow can be further reduced. Also,
In the airflow guide system, since the opening serving as an inlet for other air is provided, the flow velocity generated by the cooling system can be increased, and a relatively high cooling rate can be achieved.

Next, an embodiment in which the driving device according to the present invention is used as an impeller apparatus will be described. Driving device 1 as impeller device
Reference numeral 00 denotes an impeller or fan having an impeller device main body 135 having a cowling, and a rotatable fan blade 160 rotatably provided on the impeller device main body 135 and having its axial direction A and radial direction R defined. 110, a first fluid guide device 120 connected to the impeller device main body 135 to guide the fluid supplied along the radial direction R to the impeller 110, and a first fluid guide device 120 connected to the impeller device main body 135 and extending along the axial direction A. Impeller device 1
And a second fluid guiding device 140 for guiding the fluid away from 00. Preferably, as shown in FIG. 4, the impeller device 100 according to the present invention is rotatably provided on the impeller device main body 135, and concentrates the fluid along the axial direction A toward a region whose range is defined. Further comprising a third fluid guiding device 190. The third fluid guiding device 190 comprises two flat peripheral portions 192 and two arcuate peripheral portions 191, wherein the flat peripheral portions 192 and the arcuate peripheral portions 191
They are arranged alternately. Further, the third fluid guide device 190 has a notch near the tip of the fan blade in order to reduce the backflow due to the air resistance and further reduce the turbulence of the airflow.

[0022]

According to the present invention, an airflow guide system is provided.
And a cooling system comprising a fan and an outlet duct , providing an adaptive spatial arrangement, reducing turbulence in the basin and eliminating the problems of the prior art.

In particular, since the driving device according to the present invention allows the directions of the inlet and the outlet of the airflow to be in different directions, it is possible to arrange the space adaptively and to reduce the turbulence in the basin. can do.

In addition, since the airflow guide system of the driving device used as the cooling system according to the present invention is formed by a duct designed to minimize the reflection of the airflow, it is possible to reduce the turbulence in the basin. it can.

Further, in the driving device used as the cooling system according to the present invention, since the fan is suspended from the wall of the duct of the airflow guide system, a rib for supporting the fan blade is not required, thereby reducing noise. In addition, noise due to interference between the airflow and the ribs can be eliminated.

[Brief description of the drawings]

FIG. 1 is a left side view illustrating an embodiment of a driving device used as a cooling system according to the present invention.

FIG. 2 is a plan view of the driving device shown in FIG. 1;

FIG. 3 is a front view of the driving device shown in FIG. 1;

FIG. 4 is a perspective view of a third fluid guide device of the driving device used as the impeller device according to the present invention.

FIG. 5 is a left side view of a conventional cooling system for a conventional electronic device.

FIG. 6 is a front view of the cooling system shown in FIG. 5;

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 drive device 110 fan 120 inlet duct 140 outlet duct 145 bending duct connector 160 fan blade 170 notch 180 opening 190 guide device

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-288391 (JP, A) JP-A-9-322334 (JP, A) JP-A-3-85797 (JP, A) JP-A 9-1998 307255 (JP, A) Japanese Utility Model Showa 57-61898 (JP, U) Japanese Utility Model Utility Model 1-161393 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H05K 7/20 F15D 1 / 02

Claims (10)

(57) [Claims] Comprising a fan [1 claim], and the airflow guide system having an inlet duct of the air guiding airflow to the fan and an outlet duct for incorporating the fan, the inlet duct, isolates the inlet duct more A drive device for use as a cooling system for temperature control, comprising a turbulence reduction grid for reducing turbulence of air by dividing the flow into divided flow paths. 2. A pre-Symbol outlet duct and the fan, the a is directed in a different direction the direction of the inlet duct, said inlet duct to relieve the turbulence of the air flow flowing therethrough,
The drive device according to claim 1, wherein the drive device is connected to the outlet duct by an obtusely bent bending duct connector for reduction. 3. The fan is supported by and driven by a motor suspended from the bending duct connector to reduce turbulence of airflow, wherein the fan has a spiral shape in the same direction. A plurality of fan blades formed so as to have turbulent airflow, and the cooling system is configured to reduce the backflow due to air resistance and further reduce the turbulent airflow. The drive device according to claim 2, further comprising a guide device having a notch formed near a tip of the blade. 4. The cooling for temperature control according to claim 1, wherein the inlet duct has one or more openings for increasing a flow velocity of an airflow to improve cooling efficiency. A drive used as a system. 5. A drive for use as a cooling system for temperature control , comprising: a fan ; an airflow guide system having an air inlet duct for guiding an airflow to the fan; and an outlet duct for incorporating the fan. apparatus. 6. The fan includes a plurality of fan blades configured to have a curved blade surface that forms a spiral shape in the same direction, and includes a plurality of fan blades that reduce turbulence of an air flow. The cooling system for temperature control according to claim 5, further comprising: a guide device having a notch formed near a tip of the fan blade in order to reduce a backflow and further reduce a turbulence of an airflow. Drive device used as 7. An impeller device main body, an impeller having a rotatable fan blade provided rotatably on the impeller device main body and having an axial direction and a radial direction defined, connected to the impeller device main body, A first fluid guide device that guides the fluid supplied along the radial direction to the impeller; and a first fluid guide device that is connected to the impeller device main body and guides the fluid away from the impeller device along the axial direction. A drive device used as an impeller device, comprising: 8. The impeller is a fan, the first fluid guide device is a fluid inlet duct, and the inlet duct divides the inlet duct into a plurality of isolated flow paths. The drive device according to claim 7, further comprising a turbulence reduction grid configured to reduce turbulence of the fluid, wherein the second fluid guide device is a fluid outlet duct. 9. The impeller device further includes a third fluid guide device rotatably provided on the impeller device main body and configured to concentrate a fluid toward a region defined along the axial direction. A driving device used as the impeller device according to claim 7 or 8. 10. The third fluid guide device includes a plurality of flat peripheral portions and a plurality of arcuate peripheral portions, wherein the flat peripheral portions and the arcuate peripheral portions are alternately arranged. 10. The device of claim 9, wherein the third fluid guide device has a notch near the tip of the fan blade to reduce backflow due to fluid resistance and further reduce fluid turbulence. A driving device used as an impeller device.