KR100965914B1 - Fan module which can separate dust and dust separating device for the same - Google Patents

Abstract

PURPOSE: A fan module and a dust collector for the module are provided to effectively remove dust contained in air inhaled to the inside of a case of an electronic device using the centrifugal force. CONSTITUTION: A fan module(100) comprises the following: a dust collector(120) including a rotating space, an inhaling hole, and an exhaling hole; and a fan(110) flowing air to the inside of the rotating space while being connected with one side of the dust collector. The dust collector includes the following: a housing(131) with a rotation space in the inside, and an inlet connected to the rotation space; a rotation inducing member inducing the air to spirally rotate; a guiding partition(141) surrounding the exhaling hole; and a dust collecting box(150) collecting dust at the rotating space.

Description

Fan module which can separate dust and dust separating device for the same}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan module for use in an electronic device and the like, and more particularly, to a fan module having a dust collecting device for removing dust contained in air using a centrifugal force.

Inside electronic devices such as computers, automatic teller machine (ATM) devices, set-top boxes, display devices, medical devices, industrial computers, communication devices, etc., there are mainboards, graphics cards, hard disks, and central processing units ( Many components such as CPUs and power supplies (hereinafter referred to as 'electronic components') are mounted.

However, these electronic components generate considerable heat during operation, and these heats greatly affect the performance or lifespan of the electronic device. Therefore, most electronic devices are provided with cooling means for cooling the heat generated during the operation.

Such cooling means are usually divided into local cooling means and system cooling means. First, the local cooling means is used to reduce the temperature of a specific electronic component, and is used in semiconductor components such as CPU (Central Processing Unit) and GPU (Graphic card Processing Unit) which have relatively high heat generation. Cooling fan), thermoelectric elements such as Peltier devices, water cooling means using water, heat pipes, and the like.

The system cooling means is for lowering the internal temperature of the electronic device. The fan is installed in a case of the electronic device to forcibly exchange internal and external air. Such a fan may be classified into a suction fan forcibly sucking cold external air and an exhaust fan forcibly evacuating hot internal air.

In most electronic devices, such local cooling means and system cooling means are installed together, and the heat that the local cooling means takes from the electronic components is discharged to the outside of the case through the system cooling means.

However, when the suction fan or the exhaust fan used as the system cooling means operates, there is a problem that various dusts are also introduced into the electronic device while external air is introduced. If such dust accumulates inside the electronic device for a long time, it may cause an electrical short to the electronic component or greatly reduce the heat dissipation performance of the electronic component, thereby adversely affecting the performance or the life of the electronic device. In particular, unlike various households in the electronic devices used in industrial sites, since metallic dust is introduced into the electronic device, the risk of fatal damage to the electronic device is high.

In order to solve this problem, a method of installing a dust removing filter at the front end or the rear end of a suction fan into which external air is introduced has been recently introduced. However, since the filter interferes with the smooth flow of air, there is a problem of lowering the overall cooling efficiency. In addition, after a certain amount of dust is adsorbed on the filter, the amount of dust adsorbed rapidly increases, which causes a problem of rapidly decreasing heat radiation efficiency. Therefore, the user must replace the filter regularly, which is very cumbersome for the user.

Meanwhile, the problems caused by the dust contained in the flowing air are not limited to electronic devices. For example, even in home appliances such as TVs, audio, refrigerators, and air conditioners, there is a problem that a considerable amount of dust accumulates inside the case when used for a long time. There is a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a means for effectively removing various dusts from the air flowing into the electronic device or the home appliance without degrading the heat dissipation performance of the electronic device or the home appliance. There is this.

In addition, the purpose is to provide a means for effectively removing the dust contained in the air by installing in the air flow path, such as ducts, vents of the air conditioning equipment.

According to an aspect of the present invention, there is provided a fan module mounted on a case of an electronic device or a home appliance and allowing air to flow into the case, the rotation region formed therein and an intake port communicating with the rotation region, respectively. And a dust collecting unit having an exhaust port. A fan coupled to one side of the dust collecting part and configured to flow air into the rotation region;
The dust collecting unit may include a housing having the rotating region therein and having openings communicating at the front and rear ends thereof with the rotating region; A rotation induction member installed at the front end of the rotation region to guide the introduced air to rotate in a spiral shape and having at least one intake port; A guide partition wall protruding toward the central axis in the longitudinal direction of the rotation area while being coupled to the housing without a play at the rear end of the rotation area, and surrounding the exhaust port coaxially with the central axis of the rotation area; It is installed on one side of the housing, and provides a fan module including a dust collector for collecting dust to rotate in the rotation region through a dust collecting passage connected to the housing or a dust collecting hole formed in the housing.

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The fan may be an axial fan that generates air flow in the same direction as the rotation axis, and the central axis in the longitudinal direction of the rotation area and the rotation axis of the fan are located on the same line.

In addition, the guide partition wall may be formed perpendicular to the central axis of the longitudinal direction of the rotation area. In addition, the rear end portion of the guide partition wall may be coupled to the housing without play, and the front end portion of the guide partition wall may be located inside the rotation area.

According to the present invention, it is possible to effectively remove various dusts contained in the air introduced into the case of electronic devices, home appliances, etc. by the operation of the fan by using centrifugal force. In addition, since the filter does not use, it does not interfere with the smooth flow of inhaled air, and thus, the cooling efficiency does not decrease due to dust collection.In the long term, the amount of dust accumulated inside the electronic device is minimized. Can significantly improve the heat dissipation efficiency.

In addition, if the fan module or the dust collector of the present invention is installed on a path through which air flows, such as a duct or an air vent of an air conditioning facility, dust contained in the air can be effectively removed.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First of all, for convenience of description, the air inflow side of the fan module is referred to as a front end and the opposite side is referred to as a rear end, and a direction connecting the front end and the rear end is referred to as a 'length direction'. In addition, in the present specification, foreign matters such as lint, fine particles, dust, and the like contained in the air will be collectively referred to as 'dust'.

First embodiment

1 to 3 are respectively a perspective view, an exploded perspective view and a sectional view of the fan module 100 according to the first embodiment of the present invention.

The fan module 100 according to the first embodiment of the present invention includes a fan 110 that generates air flow, and a dust collecting part 120 that is coupled to one side of the fan 110 to filter dust contained in flowing air. It includes.

The fan 110 includes a rotary shaft 112 driven by a motor, a plurality of rotary blades 114 disposed radially around the rotary shaft 112, and at the front end or the rear end of the dust collector 120 or the electronic device. A flange 116 is formed for coupling to the case.

In particular, the embodiment of the present invention uses a small axial fan (commonly used for cooling or exhaust in electronic devices, home appliances, etc.). This axial fan flows air in the direction of the rotation axis. Other types of fans may be used, but it is preferable to use an axial fan in order to manufacture them compactly so that they can be mounted on electronic devices or home appliances.

However, since the conventional axial flow fan used in a computer or the like has a large amount of wind while the wind pressure is weak, this should be sufficiently considered in designing the dust collector 120. The high-pressure blower fan used in vacuum cleaners and the like is too loud and too loud to install in a computer with limited space. That is, the present invention is to provide a fan module having a dust collecting function while using a low noise, low wind pressure small axial fan used for system cooling of a conventional computer as it is.

In addition, the fan 110 used in the present invention may be a finished product in which a rotating shaft 112 and a rotary wing 114 are mounted on a predetermined frame, and the rotating shaft 112 is formed on a component (housing, etc.) of the dust collecting unit 120 to be described later. Only the rotary blade 114 may be mounted. This is also the same in the other embodiments of the present invention described later.

Dust collector 120 is a means for collecting the dust contained in the air by using a centrifugal force, for this purpose, the dust collector 120 includes a rotation region (R) to rotate the introduced air. The faster the rotational speed of air in the rotation region R, that is, the greater the centrifugal force, the higher the dust collection efficiency. In particular, as described above, because the axial fan for the computer has a low wind pressure, the dust collecting part 120 should be designed to minimize the wind pressure loss and maximize the rotation speed of the air.

The dust collector 120 according to the first embodiment of the present invention has an inner space provided to the rotation region R, and an inlet port I communicating with the rotation region R is formed at the tip of the dust collector 120. In addition, at the rear end of the rotation area R, a guide partition wall 141 protruding into the rotation area R is formed along the circumference of the rotation area R, and is penetrated by an inner end of the guide partition wall 141. It serves as an additional exhaust port (O).

In addition, the dust collector 120 includes a dust collector 150 for collecting dust rotating in the rotation region (R).

The fan 110 may be coupled to the front end or the rear end of the dust collector 120, but in order to introduce external air into the rotation region R at a uniform pressure, that is, at the rear end of the dust collector 120, that is, the guide partition 141. It is more preferable to couple to the rear end of

The dust collecting part 120 may be manufactured integrally, but for convenience of manufacturing, as shown in FIG. 2, the first member 130, the guide partition wall 141, and the exhaust opening having the inlet port I and the rotation area R are illustrated in FIG. 2. It is preferable to separately manufacture and assemble the second member 140 having (O). However, it is not excluded that the first member 130 and the second member 140 are integrally manufactured.

The first member 130 includes a housing 131 having an inner space provided to the rotation region R, and having openings communicating at the front and rear ends thereof with the rotation region R, respectively, and the housing 131. The flange portion 132 protrudes outward from the periphery of the tip opening of the. The inner space of the housing 131 is provided to the rotation area (R).

A plurality of guide grooves 133 are formed on the front end surface of the flange portion 132 to communicate with the inner space of the housing 131, and cover the front end opening of the housing 131 and the inner end of each guide groove 133. Each guide groove 133 functions as the inlet port I by the shield plate 134.

Since the dust collecting part 120 is easy to manufacture by plastic injection molding, it is preferable that the housing 131 of the first member 130 has a substantially circular pipe shape. Therefore, the central axis of the housing 131 is positioned coaxially with the fan 110 coupled to the dust collecting part 120.

 The rotation region R formed inside the housing 131 may have the same inner diameter from the front end to the rear end, and may have a larger inner diameter of the rear end than the front end as shown.

In the first embodiment of the present invention, the rotation region R inside the housing 131 is divided into a first rotation region R1 and a second rotation region R2 from the front end, and thus the second rotation region R2 at the rear end side. ) Has a larger inner diameter.

In this case, when air and dust rotated in the first rotation region R1 flow into the second rotation region R, dust, which is relatively influenced by centrifugal force, instantly moves to the inner wall of the second rotation region R. While being separated from the clean air, it is possible to effectively separate the dust even in a narrow space, thereby minimizing the size of the dust collector 120.

In addition, the inner diameter of the first rotation region R1 may be larger than the outer diameter of the distal end portion of the guide partition wall 141 located at the rear end. Otherwise, the dust rotating in the first rotation region R1 may be discharged through the exhaust port O before moving to the inner wall of the second rotation region R2. In particular, when the dust collecting part 120 is made thin, when the rear end of the first rotation region R is very close to the exhaust port O, the second rotation region having a larger inner diameter is formed at the rear end of the first rotation region R1. By installing R2), the dust collection rate can be increased.

In addition, in order to minimize the wind pressure loss of the fan 110, the inner diameter of the second rotation region R may be similar to or larger than the diameter of the fan 110.

In FIG. 3, it is shown that the inner diameters of the first and second rotation regions R1 and R2 do not continuously change, but increase rapidly at the boundary. As the inner diameter is continuously increased, the dust collecting part 120 needs to be lengthened to increase the dust collecting efficiency. Therefore, in order to make the fan module 100 thinner, the first rotating area R1 and the second rotating area R2 as shown in FIG. It is desirable to increase the inner diameter abruptly or discontinuously.

Therefore, the air introduced into the housing 131 through the inlet I moves forward while spirally rotating in the first rotation region R1, and the rotation radius becomes larger when the second rotation region R2 is reached. Therefore, the dust greatly affected by the centrifugal force instantly rotates along the inner wall of the second rotation region R2. In addition, the clean air, which is relatively less affected by the centrifugal force, is smoothly discharged through the exhaust port O close to the rear end of the first rotation region R1.

A dust collecting passage 138 is connected to the housing 131, and the dust collecting passage 138 is connected to the outer circumferential surface of the housing 131 in a tangential direction. Therefore, the dust rotating along the inner wall of the housing 131 due to the centrifugal force is smoothly discharged to the dust collector 150 through the dust collecting passage 138 connected in the tangential direction.

The dust collecting passage 138 should be connected to a position close to the rear end or the rear end of the housing 131 to smoothly collect the dust rotating at the rear end of the rotation region (R). Instead of separately forming the dust collecting passage 138, a dust collecting hole (not shown) communicating with the dust collecting box 150 may be formed on the side surface of the housing 131.

On the other hand, the intake port (I) should be designed to flow into the rotation region (R) while the air rotates. Therefore, the outlet direction of the inlet port I should be substantially perpendicular to the longitudinal direction of the housing 131 and formed in the tangential direction of the rotation area R. However, in order to prevent the inflow air from hitting the inner wall of the rotary zone R strongly and to prevent the loss of wind pressure or the scattering of dust, the outlet direction of the inlet port I should be slightly away from the tangential direction of the rotary zone R. At the same time, it is more preferably formed to be slightly biased toward the rear end of the housing 131.

In the first embodiment of the present invention, the guide groove 133 is formed in a spiral from the peripheral portion of the flange portion 132 toward the center portion. A plurality of guide grooves 133 are densely formed in the flange portion 132 for smooth air suction, and as a result, a very thin partition 135 is formed between each guide groove 133. However, the thickness of the partition 135 is not limited to the illustrated shape because it depends on the number of guide grooves 133.

The inner wall of the outer end of the guide groove 133 may be formed perpendicular to the front end surface of the flange 131, but as shown in the front view of Figure 4 to naturally change the direction in the air inflow process It is preferable that the outer inner wall 133-1 of 133 is formed in an inclined surface so as to be closer to the rotation region R toward the bottom.

In addition, the bottom surface 133-2 of the guide groove 133 may be formed in a vertical plane with respect to the longitudinal direction of the housing 131, but dust introduced into the housing 131 ends of the adjacent partition wall 135. In order to prevent it from being scattered by the bump, it is preferable that the bottom surface 133-2 of the guide groove 133 is formed to be inclined toward the rear end of the housing 131 as shown in FIG. 3.

Therefore, the air flowing from the outside enters the inside of each guide groove 133 and is then turned along the spiral guide groove 133, and then flows into the inside of the housing 131 past the back of the shield plate 134. do. At this time, since the bottom surface 133-2 of the guide groove 133 is inclined, the vector in the air inflow direction has a component in the longitudinal direction, and as a result, the fan 110 is more smoothly rotated along the inner wall of the housing 131. Proceed to).

Meanwhile, in the first exemplary embodiment, a plurality of inlets I are symmetrically formed around the tip opening of the housing 131 using the above-described guide groove 133 and the shield plate 134.

However, the shape or position of the intake port I is not necessarily limited thereto, and may be modified in various forms.

For example, as shown in a partial cross-sectional view of FIG. 5, a plurality of inlet holes I may be formed along the circumference of the side of the housing 131 near the tip end thereof. Also in this case, it is preferable that the inlet port I has a component in the longitudinal direction of the vector in the outlet direction communicating with the rotation region R. As shown in FIG. When the fan module 100 is mounted in a case such as an electronic device, the inlet port I must be exposed to the outside of the case. Thus, when the inlet port I is formed on the side surface of the housing 131, The flange 132 should be formed on the rear end side of the inlet port I.

As another form of forming the inlet port I, a plurality of fixed blades inclined in a predetermined direction are provided in the tip opening of the housing 131 to change the flow direction of air, and a space formed between the fixed blades is provided. It can also be utilized as an intake port (I).

Meanwhile, the second member 140 includes a guide partition wall 141 having an exhaust port O and a flange portion 144 protruding laterally from the rear end of the guide partition wall 141. The flange portion 144 is for coupling to a case or fan 100, such as an electronic device.

The guide partition wall 141 prevents the dust that rotates along the inner wall of the housing 131 due to the centrifugal force from being discharged through the exhaust port O until it is collected into the dust collecting container 150, and only clean air separated from the dust. It serves to discharge through the exhaust port (O).

Since the dust rotates along the inner wall of the housing 131, the guide partition wall 141 protrudes in a predetermined width toward the central axis of the housing 131 with one end coupled to the housing 131 without play. The through portion enclosed by the other end of the guide partition wall 141 is provided to the exhaust port (O), wherein the diameter of the exhaust port (O) only when the diameter of the rotation shaft 112 of the fan 110 is sufficiently larger than the rotation region (R) Wind pressure formed by the rotary blade 114 to the inside of the can be transmitted to the maximum.

The guide partition wall 141 may be formed as a vertical wall with respect to the central axis of the housing 131.

By the way, the guide partition 141 is shown to have a funnel shape that gradually increases in diameter toward the rear end. This is to minimize the wind pressure loss of the fan 110 by forming a little space between the fan 110 and the guide partition 141 coupled to the rear end of the housing 131. In this case, the front end of the guide partition wall 141 is located inside the rotation area (R) and the rear end is coupled to the housing 131 at a rear end of the rotation area (R) without play.

In particular, the front end of the guide partition wall 141 is preferably located inside the second rotation area R2 of the housing 131, so that the outer diameter of the front end of the guide partition wall 141 is, of course, of the second rotation area R2. It must be smaller than the inner diameter.

In addition, the front end of the guide partition wall 141 is preferably located slightly behind the first rotation region (R1) of the housing 131. In this case, the dust flowing into the second rotation region R2 does not enter the exhaust port O, but moves to the inner wall of the housing 131 due to the centrifugal force, and only the clean air from which the dust is removed is discharged through the exhaust port O. Because it can.

If the fan 110 is mounted far enough from the guide partition 141 or the fan 110 is installed on the other side, the guide partition 141 may be formed as a vertical wall with respect to the central axis of the housing 131. something to do.

The drawing shows that the guide tube 142 of the circular tube shape is coupled to the tip of the guide partition 141. The guide tube 142 is installed coaxially with the housing 131, and the rear end thereof is coupled to the periphery of the exhaust port O without play.

When the fan module 100 is made thin, the length of the guide partition 141 may be shortened. At this time, relatively light dust among the dust rotating along the inner wall of the housing 131 is discharged to the exhaust port O. Can be swept away together in the process. The guide pipe 142 serves to prevent such a phenomenon while maintaining the diameter of the exhaust port (O).

The rear end of the guide partition 141 or the flange portion 144 is formed with a connecting member 146 for coupling to the housing 131 of the first member. The connection member 146 may have a screw thread for coupling to the housing 131, or may be an insertion groove into which the rear end of the housing 131 is inserted. It may also be a coupling means coupled to the rear end of the housing 131 by interference fit.

The dust collector 150 may be detachably coupled to the housing 131, for example. In addition, a dust removing door (not shown) may be installed on one side of the dust collecting box 150.

In addition, the dust collecting box 150 may have a surface in contact with the housing, and as shown, a surface in contact with the housing may be sealed and a dust collecting hole 152 communicating with the dust collecting passage 138 may be formed therein. In addition, the dust collecting box 150 may be installed so that the through part formed on the side of the housing 131 communicates with the dust collecting hole 152 of the dust collecting box 150 without mediating the dust collecting passage 138.

On the other hand, the dust collecting hole 152 is preferably formed to be biased to one side with respect to the center. If formed in this way, even if the fan module 100 is installed by rotating 90 degrees in the clockwise direction, for example, because the dust collecting hole 152 is located on the upper side because it can perform the dust collection function smoothly.

6 to 8 are a perspective view, an exploded perspective view and a cross-sectional view showing a modified example of the fan module 100 according to the first embodiment of the present invention, respectively, and the air inside the dust collecting unit 150 to the dust collecting unit 120 is again housed. Characterized in that the feedback flow path 139 for discharging to the interior of the (131) is included. A feedback hole (not shown) communicating with the dust collecting box 150 may be formed on one side of the housing 131 without separately forming the feedback passage 139.

The dust collecting box 150 may have an opening in contact with the housing, and as shown, a feedback passage (separate from the dust collecting hole 152 communicating with the dust collecting passage 138 is sealed in this surface). 139 or a feedback hole 154 communicating with a feedback hole (not shown) of the housing 131 may be formed.

One end of the feedback flow path 139 communicates with the feedback hole 154 of the dust collecting container 150, and the other end communicates with the leading end of the rotation region R. FIG. As such, when the feedback flow path 139 is connected to the housing 131, the internal pressure of the dust collecting container 150 may be lowered somewhat, so that dust may be more easily introduced into the dust collecting container 150. If there is no feedback flow path 139, the dust may not be easily introduced through the dust collecting flow path 138 due to the internal pressure of the dust collecting box (150).

In the first embodiment of the present invention, the outer end of the at least one guide groove 133 communicates with the feedback passage 139 to form the feedback passage 139, and the guide groove communicating with the feedback passage 139 ( The entirety of 133 is covered by the obstruction plate 136. If the screen plate 136 is not mounted, it is difficult to smoothly discharge the air inside the dust collector 150 due to the air sucked from the outside.

The shielding plate 136 may protrude to one side of the shielding plate 134 and be integrally formed with the shielding plate 134.

Meanwhile, as shown in FIG. 9, the rotation guide 170 may be installed inside the shielding plate 134 that seals the tip opening of the housing 131 from the dust collecting part 120. According to the experiment, dust may be observed to rotate in the vicinity of the central axis of the housing 131 in the rotation regions R1 and R2, and dust at this position may be discharged through the exhaust port O as it is. Therefore, when the rotation guide 170 is installed in the rotation region, particularly in the first rotation region R1, the phenomenon of dust turning in the vicinity of the central axis may be prevented.

The rotation guide 170 has a circular outer circumferential surface such as a cylinder, a circular tube, and the like, and is installed coaxially with the housing 131. In order to minimize wind pressure loss, the rear end of the rotation guide 170 should be located at the front end of the exhaust port (O).

10 to 12 are schematic cross-sectional views schematically illustrating a state in which the fan module 100 according to the first embodiment of the present invention is mounted on an electronic device (eg, a computer).

As shown in the drawing, a typical electronic device includes a case C having various electronic components therein, one side of the case C includes an intake hole 72, and the other side includes an exhaust hole 74. .

The fan module 100 is preferably installed inside the case C, but may be installed outside. When installed inside the case (C), the inlet port (I) of the fan module 100 should be installed to face the intake hole (72), and when installed outside, the exhaust port (O) is the intake hole (72). Should be installed facing the

System cooling of the electronic device using the fan module 100 may be implemented in various forms.

For example, the fan module 100 is installed in the intake hole 72, but the fan 110 may be mounted only at the rear end of the dust collecting unit 120 as shown in FIG. 10, and only at the tip of the dust collecting unit 120 as shown in FIG. 11. The fan 110 may be mounted. Although not shown, the fan 110 may be mounted at both the rear end and the front end of the dust collecting unit 120.

In addition, in order to increase the exhaust pressure, as shown in FIGS. 10 and 11, an exhaust fan 70 may be further installed in the exhaust hole 74.

In addition, as shown in FIG. 12, only the dust collecting unit 120 may be installed in the intake hole 72, and air flow may be generated inside the dust collecting unit 120 using the exhaust fan 70 installed in the exhaust hole 74. have.

10 to 12 are only examples showing some installation methods of the fan module 100 according to the first embodiment of the present invention, the dust collector 120, the fan 110, and the exhaust fan 70 are different from each other. Combinations may be made and will be readily understood by those skilled in the art without providing a separate drawing.

Hereinafter, the operation of the fan module 100 according to the first embodiment of the present invention will be described with reference to FIG. 3.

First, when the fan 110 operates, external air flows into the rotation region R through the inlet port I of the housing 131. The rotating air flowing through the inlet port I into the first rotating region R1 is advanced while rotating helically.

In this process, the clean air is discharged through the exhaust port O close to the rear end of the first rotation region R1, and dust, which is relatively affected by the centrifugal force, rotates along the inner wall of the housing 131 by the centrifugal force.

The dust that has rotated along the inner wall of the first rotating region R1 enters the second rotating region R2 having a larger inner diameter and simultaneously moves to the inner wall of the housing 131 and then the guide partition 141. In the space between the housing 131 is rotated and collected by the dust collector 150.

Second embodiment

13 to 15 are perspective, sectional and exploded perspective views, respectively, of the fan module 200 according to the second embodiment of the present invention.

The second embodiment of the present invention is the same as the first embodiment in that the fan 110 and the dust collector 120 coupled to one side of the fan 110, except that the exhaust port (O) at the rear end of the dust collector 120 It is characterized in that the auxiliary dust collector 260 is coupled to remove the dust from the air discharged through once again.

Although the dust collector 120 is shown in a different shape from the first embodiment in the drawing, this is only to show that the dust collector 120 may be deformed in the form of a filter, and the dust collector 120 according to the second embodiment also uses centrifugal force. In order to remove the dust to perform the same role as the dust collector 120 according to the first embodiment.

The dust collecting part 120 of the fan module 200 according to the second embodiment is coupled to the first housing 210 having the internal space, the guide member 220 for separating and removing dust from the first housing 210. It includes a rotary induction member 230 coupled to the front end of the first housing 210, the auxiliary dust collecting unit 260 coupled to the rear end of the guide member 220. The dust collecting box 240 is coupled to a lower portion of the assembly in which the first housing 210, the guide member 220, and the rotation guide member 230 are coupled to each other.

The first housing 210 has a circular tube shape in which the front and rear ends thereof are opened, and an inner space is provided to the rotation region R. As shown in FIG.

The guide member 220 is coupled to the second housing 222 having a circular tube shape having the same inner diameter as the first housing 210, the outer end of the second housing 222 without play, and the inner end of the second housing 222. The guide partition wall 224 protruding into the interior of the 222, the flange 229 protruding laterally from the rear end of the second housing 222, coaxially with the second housing 222 at the tip of the guide partition wall 224 It comprises a guide tube 226 is.

The role of the guide partition 224 and the guide tube 226 is the same as the guide partition 141 and the guide tube 142 of the first embodiment, and description thereof will be omitted. A dust collecting passage 228 is connected to the second housing 222, and the dust collecting passage 228 is connected in a substantially tangential direction to the outer circumferential surface of the second housing 222.

Since the dust collecting passage 228 should communicate with the space between the second housing 222 and the guide partition 224, the dust collecting passage 228 is preferably connected to the rear end of the second housing 222, and at least a guide tube ( It should be connected to the second housing 222 at the rear end rather than at the front end of 226.

The rotation guide member 230 serves to guide the air flowing into the first housing 210 to rotate in a spiral manner. The rotation guide member 230 has a cap-shaped shield portion 232 positioned inside the third housing 231 and the third housing 231 of a circular tube shape having the same inner diameter as the first housing 210. ), A plurality of fixed blades 234 branched from the outer surface of the shielding portion 232 and connected to the inner surface of the third housing 231. The third housing 231 may be provided with a flange 235 for coupling to the case or fan 210 of the electronic device.

The shield 232 is provided so that the opened portion is located at the rear end side. The plurality of fixed blades 234 are connected to the entire outer surface of the shielding portion 232 at uniform intervals, and thus, the plurality of intake holes I partitioned by the respective fixed blades 234 around the shielding portion 232. Are formed at uniform intervals along the circumferential direction.

Each of the fixing blades 234 guides the introduced air to rotate helically in the interior of the first housing 210, so that the vector in the outlet direction of each intake port I is formed in the first housing 110 or the first housing. It has a longitudinal component and a tangential component of the three housings 231.

A feedback passage 238 is connected to the side wall of the third housing 231 to discharge a part of the air inside the dust collecting box 240 back into the first housing 210. One end of the feedback passage 238 communicates with the feedback hole 244 of the dust collecting box 240, and the other end communicates with a space formed between the third housing 231 and the shield 232.

In the second embodiment of the present invention, the shielding plate 239 which seals at least one inlet port I is coupled to the front end surface of the rotation guide member 230, and the inlet port I blocked by the shielding plate 239 is blocked. The feedback flow path 238 was connected to the internal space of the.

It is also possible to connect the feedback passage 238 to the first housing 210 without connecting the feedback passage 238 to the third housing 231, in this case dust to rotate in the rotation region (R) by the feedback air In order to prevent scattering, it is preferable to connect the feedback channel 238 to the front end of the first housing 210 as much as possible.

On the other hand, the rear end of the rotation guide member 230 and the front end of the guide member 220 is more preferably installed to be spaced along the longitudinal direction. In this case, as shown in FIG. 14, clean air flowing into the intake port I naturally flows out through the exhaust port O, and relatively heavy dust is discharged along the inner wall of the second housing 222 by centrifugal force. Rotating is collected into the dust collecting box 240 through the dust collecting passage 228.

The dust collecting box 240 includes a dust collecting hole 242 and a feedback hole 244 communicating with the above-described dust collecting passage 228 and the feedback passage 238, respectively.

The inner diameter of the first housing 210, the second housing 222, and the third housing 231 is preferably the same, but may be larger in diameter toward the rear end.

The second housing 222 is tightly coupled to the rear end of the first housing 210 without play, and the third housing 231 is tightly coupled to the front end of the first housing 210 without play. In this case, the first to third housings 210, 222 and 231 are preferably installed on the same axis along the air flow path.

Meanwhile, as illustrated, the first housing 210, the guide member 220, and the rotation guide member 230 may be manufactured by assembling each component separately, or may be manufactured integrally with each other.

In addition, the first housing 210, the second housing 222 and the third housing 231 is made of a single circular tube, and the shielding portion 232 and the fixed blades 234 are installed at the front end of the plurality of intake vents. (I) may be formed, and the guide partition 124 may be joined to the rear end. Of course, it can be fabricated and assembled in other ways as needed.

The auxiliary dust collector 260 serves to remove dust by recirculating the discharged air once more, paying attention to the fact that the air discharged through the exhaust port O of the guide member 220 still helically circulates.

The auxiliary dust collecting part 260 has a body 261 having a circular through part 268, an auxiliary rotary flow path 266 formed in a circumferential direction on the side of the tip side of the body 261 along the periphery of the through part 268, Auxiliary dust collector (265) formed to be spaced apart from the auxiliary rotary flow path (266), and a dust collecting flow path (267) and a feedback flow path (269) connecting the auxiliary rotary flow path (266) and the auxiliary dust collector (265), respectively.

As shown in FIG. 16, the auxiliary dust collecting part 260 extends toward the central axis from the rear end of the fourth housing 263 having a short circular tube shape, and the exhaust port 268 is formed at the center thereof. An auxiliary guide partition wall 264 may be provided. At this time, the space formed between the fourth housing 263 and the auxiliary guide partition wall 264 becomes the auxiliary rotation flow path 266.

The fourth housing 263 preferably has the same inner diameter as the second housing 122 of the dust collector 120. In addition, the center axis of the fourth housing 263 preferably coincides with the center axis of the first to third housings 210, 222, and 231, and the center of the exhaust port 268 is preferably located on the axis of the fourth housing 263. .

The auxiliary dust collecting channel 267 communicating with the internal space of the auxiliary dust collecting box 265 is connected to the fourth housing 263 in a tangential direction thereof, and the auxiliary feedback flow path discharges clean air inside the auxiliary dust collecting box 265. 269 is also tangentially connected to the fourth housing 263.

In order to effectively collect the dust entering the auxiliary rotary flow path 266, it is preferable that the auxiliary rotary flow path 266 has a concave cross section. For this purpose, it is preferable to bend the inner edge of the auxiliary guide partition wall 264 by a predetermined angle. Do. However, since the dust introduced into the fourth housing 263 rotates along the inner wall surface of the fourth housing 263 by centrifugal force, a dust collecting effect can be obtained without bending the inner edge of the auxiliary guide partition wall 264.

The auxiliary dust collecting box 265 may be manufactured in a form in which the front end side is opened as shown, or alternatively, the auxiliary dust collecting box 265 may be manufactured in a closed form. If the tip side is opened, it should be installed to be sealed by the side of the dust collecting box 240 during assembly.

Only one auxiliary dust collecting unit 260 may be installed or two or more may be continuously installed in order to increase dust collection efficiency. In addition, the auxiliary dust collector 265 may be detachably installed from the body 261 to remove the collected dust, or may be separately installed a dust removal door (not shown) in the auxiliary dust collector 265.

In addition, the auxiliary dust collector 265 may be integrally formed with the dust collector 240 or coupled to the side surface of the dust collector 240 without being integrally formed with the body 261 or coupled to the body 261. If it is formed integrally with the dust collecting box 240, a hole communicating with the dust collecting passage 267 and the discharge passage 269 of the auxiliary dust collecting unit 260 should be further formed in the dust collecting box 240. At this time, in order to prevent the dust collected in the dust collecting box 240 through the feedback flow path 269 of the auxiliary dust collecting unit 260, the dust collecting space through the dust collecting passage 228 of the guide member 220 and Space where dust is collected through the dust collecting passage 267 of the auxiliary dust collecting unit 260 is preferably isolated by using a partition (not shown).

The dust collector 200 according to the second embodiment of the present invention may also be mounted on the case C of the electronic device in various forms as in the case of the first embodiment.

Hereinafter, an operation process of the dust collecting apparatus 200 according to the second embodiment of the present invention will be described with reference to FIGS. 13 to 15. In FIG. 14, the solid line shows the flow path of dust, and the dotted line shows the flow path of clean air.

When the fan 110 is operated, external air containing dust flows into the dust collector 120. Inflowing outside air flows into the first housing 210 while spirally rotating after passing through the inlet port I of the rotation induction member 230 and then discharged through the exhaust port O of the guide member 220. do.

In this process, the dust contained in the air advances in the longitudinal direction while rotating along the inner wall of the first housing 210 due to the centrifugal force, and eventually rotates along the inner wall of the second housing 222 of the guide member 220 and is collected. Collected into the dust collector 240 through the flow path (228).

A part of the air introduced into the dust collector 240 is introduced into the space formed by the inside of the rotation guide member 230 again, that is, the screening plate 239 and the fixed blade 234 through the feedback flow path 238. After entering the first housing 210 again.

On the other hand, the air discharged through the exhaust port O of the guide member 220 is still helically circulating, so as soon as it exits the exhaust port O, it diffuses rapidly along the rear end surface of the guide partition wall 224.

In this process, the clean air is discharged through the exhaust port 268 of the auxiliary dust collector 260, and the dust contained in the air is discharged into the fourth housing 263 in the auxiliary rotary flow path 266 of the auxiliary dust collector 260 by centrifugal force. It rotates along the side and is collected into the secondary dust collecting box 265 through the secondary dust collecting passage 267. The air introduced into the auxiliary dust collecting box 265 is discharged to the auxiliary rotary flow path 266 through the feedback flow path 269 and then discharged toward the fan 110 through the exhaust part 268 of the body 261.

In the above-described embodiments, the dust collecting part 120 constituting the fan module 100 or 200 of the present invention may be changed in various forms. For example, as shown in FIG. 17, the tip of the guide partition 224 positioned inside the housing 210 may be inserted into the shield 232 of the rotation guide member.

Meanwhile, the fan modules 100 and 200 of the present invention described above are used in electronic devices such as computers, ATM devices, set-top boxes, display devices, medical devices, industrial computers, communication devices, and home appliances such as TVs, refrigerators, and air conditioners. It is designed to remove dust flowing into the case, but its use is not limited thereto.

That is, it can be used to remove dust contained in the air by installing in all the paths where the air flow occurs.

For example, as shown in Figure 18 may be installed in the middle of the duct (D) of the air conditioning equipment, as shown in Figure 19 may be installed in place of the ventilator in the vent of the wall (W). In this case, it may be installed for the purpose of preventing the dust from flowing outside, it may be installed for the purpose of preventing the contamination of the surrounding environment by removing the dust contained in the air discharged to the outside.

In addition, the fan module of the present invention may be installed in place of a cooler installed for heat dissipation of a central processing unit (CPU) mounted in an electronic device. In this specification, not only the CPU installed on the motherboard but also the GPU installed on the graphics card and the control semiconductor parts installed for the operation of other accessory modules will be defined as CPUs.

In general, the CPU cooler includes a heat dissipation block that contacts the CPU to absorb heat of the CPU, a plurality of heat dissipation fins connected to the heat dissipation block to discharge heat from the heat dissipation block to the outside, and a cooling fan installed at one side of the heat dissipation fin. However, when used for a long time, the dust introduced through the cooling fan accumulates in the gap of the heat sink fins, so that the heat dissipation efficiency is lowered, which causes a significant decrease in the performance of the CPU. Therefore, when the fan module of the present invention is mounted in place of the conventional cooling fan, there is an effect that can prevent the CPU performance due to dust.

In addition, by combining the dust collector with the fan of the blower, such as a fan, it is possible to remove the dust introduced into the fan of the blower in advance. For example, by installing a case surrounding the rear of the fan in the fan, and attaching the dust collector of the present invention to the case, it is possible to remove the dust introduced.

In addition, the dust collecting part 120 constituting the fan module (100,200) of the present invention can be used as an independent dust collecting device itself. This is because when the air flow rate or the suction force is sufficient, the dust can be removed even by installing only the dust collector in which the fan 110 is omitted in the air flow path.

Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment and may be modified or modified in various forms. And if such modified or modified embodiment also includes the technical spirit of the present invention included in the claims to be described later it is obvious that the included in the scope of the present invention.

1 to 3 are respectively a perspective view, an exploded perspective view and a cross-sectional view of a fan module according to the first embodiment of the present invention.

4 is a front view of the dust collector;

5 is a partial cross-sectional view showing the inlet port formed on the side of the housing;

6 to 8 are a perspective view, an exploded perspective view and a cross-sectional view of the fan module is formed with feedback channels, respectively.

9 is a cross-sectional view showing the rotation guide is installed inside the housing

10 to 12 are cross-sectional schematic diagrams showing various mounting methods of the fan module according to the first embodiment of the present invention, respectively.

13 to 15 are a perspective view, a cross-sectional view and an exploded perspective view of a fan module according to a second embodiment of the present invention, respectively

16 is a perspective view of the secondary dust collecting unit

17 is a cross-sectional view showing a modification of the dust collecting unit.

18 and 19 are views showing the fan module according to the first embodiment of the present invention installed in the ventilation hole of the inside and the wall of the duct, respectively

* Description of the symbols for the main parts of the drawings *

100, 200: fan module 110: fan

120: dust collector 130: first member

131: housing 132, 144: flange

133: guide groove 134: shielding plate

136: obstruction plate 138: dust collection euro

139: feedback channel 140: second member

141: guide partition 142: guide tube

150: dust collector 152: dust collector hole

154: feedback hole 260: auxiliary dust collecting unit

I: Intake O: Exhaust

R: Rotation area C: Case

D: Duct W: Wall

Claims (21)

A fan module mounted on a case of an electronic device or a home appliance to flow air into the case, A dust collecting part having a rotating area formed therein and an inlet and an exhaust port communicating with the rotating area, respectively; A fan coupled to one side of the dust collecting part to flow air into the rotating region; To include, the dust collecting unit, A housing having the rotating region therein and having openings communicating at the front and rear ends thereof with the rotating region; A rotation induction member installed at the front end of the rotation region to guide the introduced air to rotate in a spiral shape and having at least one intake port; A guide partition wall protruding toward the central axis in the longitudinal direction of the rotation area while being coupled to the housing without a play at the rear end of the rotation area, and surrounding the exhaust port coaxially with the central axis of the rotation area; A dust collector installed at one side of the housing and collecting dust rotating in the rotation region through a dust collecting passage connected to the housing or a dust collecting hole formed in the housing; Fan module comprising a The method of claim 1. The fan is an axial fan for generating air flow in the same direction as the rotation axis (axial fan), the central axis of the rotation region and the rotation axis of the fan fan module, characterized in that located on the same line The method of claim 1. The guide partition wall is characterized in that the fan module is formed perpendicular to the central axis of the rotation area The method of claim 1. The rear end of the guide partition wall is coupled to the housing without play, the front end of the guide partition wall fan module, characterized in that located in the rotation area The method of claim 1, A guide tube of a circular tube shape is coupled to an edge surrounding the exhaust port in the guide partition wall and extends toward the front end of the rotation region, and the guide tube is installed coaxially with the central axis of the rotation region. module The method of claim 1, The rotation region includes a fan module, characterized in that the fan module comprises a second rotation region located at a rear end of the first rotation region and the first rotation region and having a larger diameter than the first rotation region. The method of claim 6, The first rotation region and the second rotation region, characterized in that the fan module has a discontinuous surface The method of claim 6, The rear end of the guide partition wall is coupled to the inner wall of the housing without play, the front end of the guide partition wall is located inside the second rotation region, the outer diameter of the tip portion of the guide partition wall is smaller than the inner diameter of the first rotation region Fan module, characterized in that The method of claim 1, The rotation guide member, A shield having one end closed and the other end open in a cap shape, the shield having the other end facing the inside of the housing; A plurality of fixed blades coupled at a predetermined angle between the outer surface of the shield and the housing; Includes, the fan module characterized in that the space formed between the plurality of fixed blades is provided to the intake port The method of claim 1, The front end of the housing is formed with a flange protruding to the side of the opening, The rotation guide member, At least one guide groove formed on a front end surface of the flange and having an inner end portion communicating with the rotation region of the housing; A shielding plate coupled to a front end of the housing to cover a portion of the opening and the guide groove of the housing; And a space between the shield plate and the guide groove is provided to the intake port. The method of claim 1, The housing has a circular tubular shape, wherein the rotation guide member includes a shielding plate blocking a front end opening of the housing and a through hole formed in a side surface of the housing, wherein the through hole is provided to the intake port. The method of claim 1. The fan module, characterized in that the feedback flow path for communicating the dust collecting box and the rotating area is connected to the side of the housing or a feedback hole is formed. The method of claim 1, An auxiliary dust collecting part is coupled to a rear end of the dust collecting part, and the auxiliary dust collecting part is A body having a through portion communicating with the rotating region of the housing and an auxiliary rotation flow path formed around the through portion; An auxiliary dust collector formed in the body and spaced apart from the auxiliary rotary flow path; An auxiliary dust collecting passage connecting the auxiliary dust collecting container and the auxiliary rotating flow path to collect dust rotating in the auxiliary rotating flow path; Fan module comprising a The method of claim 13, The fan module further comprises an auxiliary feedback flow path connecting the auxiliary dust collecting box and the auxiliary rotating flow path to discharge the air of the auxiliary dust collecting box to the rotating region. In the dust collector for removing dust from the air flowing into the inner space is mounted on the case for the electronic device or home appliances surrounding the inner space, An opening formed at a front end and a rear end, having a rotation area therein, and having a side dust collecting passage connected thereto or a dust collecting hole formed at a side thereof; A dust collector coupled to one side of the housing and communicating with the dust collecting passage or the dust collecting hole; A guide partition wall protruding toward the central axis in the longitudinal direction of the rotation area while being coupled to the housing without a play at a rear end of the rotation area and surrounding an exhaust port coaxially with the central axis of the rotation area; A rotation induction member installed at the front end of the rotation region to guide the introduced air to rotate in a spiral shape and having at least one intake port; Dust collector including The method of claim 15. The rotary zone includes a first rotary zone and a second rotary zone located at a rear end of the first rotary zone and having a larger diameter than the first rotary zone. The method of claim 16, The rear end of the guide partition wall is coupled to the inner wall of the housing without play, the front end of the guide partition wall is located inside the second rotation region, the outer diameter of the tip portion of the guide partition wall is smaller than the inner diameter of the first rotation region Dust collector, characterized in that A heat dissipation block coupled to a central processing unit (CPU) to receive heat from the CPU, a heat dissipation fin connected to the heat dissipation block to receive heat from the heat dissipation block, and radiated to the outside; and a fan module coupled to one side of the heat dissipation fin. In the CPU cooling device comprising: The fan module, A dust collecting part having a rotating area formed therein and an inlet and an exhaust port communicating with the rotating area, respectively; A fan coupled to one side of the dust collecting part to flow air into the rotating region; Including, The dust collecting unit, A housing having the rotating region therein and having openings communicating at the front and rear ends thereof with the rotating region; A rotation induction member installed at the front end of the rotation region to guide the introduced air to rotate in a spiral shape and having at least one intake port; A guide partition wall protruding toward the central axis in the longitudinal direction of the rotation area while being coupled to the housing without a play at the rear end of the rotation area, and surrounding the exhaust port coaxially with the central axis of the rotation area; A dust collector installed at one side of the housing and collecting dust rotating in the rotation region through a dust collecting passage connected to the housing or a dust collecting hole formed in the housing; CPU Chiller characterized by including delete delete delete

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