KR100786114B1 - A device for cooling - Google Patents

Abstract

A cooling apparatus is provided to improve the quality of an electronic device by mounting a damper for reducing vibration or shocks. A cooling apparatus includes a cooling fan(500), a damper(600), and a fixing member(700). The cooling fan has a housing(510) and rotary blades(520). The damper is made of viscoelastic material, supports the housing, and reduces the vibration which is generated during the rotation of the blades and transmitted from the outside to the cooling fan. The fixing member supports the damper. The fixing member has an air hole, and a bracket which is fixed at a body frame and supports the fixing member to adjust the location of the fixing member. The bracket includes a first bracket which has a length-adjusting groove and is fixed at the body frame, a second bracket which has a length-adjusting screw inserted into the length-adjusting groove and is coupled to the first bracket, and a coupling groove which is installed in the second bracket to adjust the coupling location with the fixing member.

Description

Chillers {A DEVICE FOR COOLING}

1 is an exploded perspective view of a cooling apparatus according to the present invention.

2 is an assembled perspective view and a partial assembly cross-sectional view of the cooling device shown in FIG.

3a to 3c are perspective views showing various embodiments of the fixing position of the damper according to the present invention.

Figures 4a to 4d is a perspective view and a longitudinal sectional view showing various embodiments of the ring-shaped damper according to the present invention.

5 is a perspective view and a longitudinal cross-sectional view showing a damper of the janggu shape according to the present invention.

Figure 6 is a perspective view and a longitudinal cross-sectional view showing a damper of the center portion constricted in accordance with the present invention.

7 and 8 are perspective views illustrating a cooling apparatus mounted to a main body frame of an electronic device according to one embodiment of the present invention.

9 is a perspective view showing a cooling apparatus including a heat sink as an embodiment according to the present invention.

10 is a perspective view showing a cooling apparatus including a bracket as an embodiment according to the present invention.

11 is a perspective view of an assembly of a cooling device including a bracket according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100 ... PC power supply

110 PC (personal computer)

120 ... heat sink

121 ... central processing unit (CPU)

122 Main board 130 Bracket

131 ... Bracket 1 132 ... Bracket 2

133,720 Air hole 135 Tightening groove

138 length adjusting groove 139 length adjusting screw

500 ... cooling fan 510 ... housing

520 ... wing 530 ... motor

540,710 ... fixed hole 600 ... damper

650 ... Center hole 700 ... Fixed member

750 ... tightening hole 751 ... tightening screw

The present invention relates to a cooling device, and more particularly to a cooling device having a cooling fan for cooling the heating element by flowing air in the electronic device.

In general, a large amount of heat is generated in electronic devices such as a computer main body, a power supply main body, and an image forming apparatus main body such as a printer or a copying machine. As an electronic component mounted on an electronic device, a lot of heat is applied to a CPU that is attached to a main board such as a computer or an image forming apparatus and operates at a high clock frequency, a chipset mounted on a computer main board, and an image processing chip mounted on a video card. Occurs.

Cooling fans are often used to dissipate this heat around. The cooling fan may be directly attached to the main body frame of the electronic device, and in the case of the electronic component, the cooling fan may be attached together with the heat sink to increase the heat generating area.

Cooling fan flows air as the blade rotates, mainly cooling by convection. The cooling fan is not a part that implements the main functions of the electronic device, but is a consumable part and must be made of parts that are inexpensive.

For example, the wings are shaped by injection molding of synthetic resin. Wings are prone to eccentric mass during molding, which generates a lot of vibration as they rotate. Bearings that support the blade rotational shaft also change their characteristics due to prolonged use or wear due to vibration, and generate vibrations during rotation. Vibration generated during rotation increases the driving load of the vane, and may cause not only the haptic quality of the user, but also the main function of the electronic device in severe cases.

On the other hand, a motor, a sensor, a driving circuit, etc. are assembled together to drive the cooling fan. If a sudden shock from the outside is transmitted to the cooling fan as it is, various components assembled in the cooling fan may be damaged. If external vibration or shock is transmitted as it is while the cooling fan is rotated, the risk of damage to the cooling fan is further increased.

Therefore, the present invention was created to improve the problems of the conventional cooling apparatus as described above, and can attenuate vibrations or shocks transmitted from the cooling fan to the cooling fan from the outside and the external structure, and a simple structure It is an object of the present invention to provide a cooling device that can be implemented at low cost.

In order to achieve the above object, a cooling apparatus according to the present invention includes a cooling fan rotatably provided with a blade in a housing; A damper made of a viscoelastic material that supports the housing and attenuates vibration generated when the blade rotates and vibration transmitted from the outside to the cooling fan; And a fixing member for supporting the damper.

Preferably, the fixing member has a hole through which air enters.

More preferably, the damper is formed in a ring shape whose upper and lower surfaces are in close contact with the fixing member and the housing, respectively.

In addition, the damper is characterized in that the both ends of the longitudinal cross-section is a long gear, the fixing member and the housing are fitted to the both ends.

The damper has a shape in which the central portion of the longitudinal section is concave, and one of the fixing member and the housing is fitted to the central portion.

Preferably, the present invention includes: a heat sink fastened to the fixing member, in contact with a heat generating element, and receiving heat and dissipating to the surroundings; It is fixed to the body frame, and supports the cooling fan, the bracket is fixed to the other side of the fixing member to be adjustable;

More preferably, the bracket is provided with at least one fastening groove for adjusting the fastening position of the fixing member.

In addition, the bracket and the first bracket is fixed to the body frame; It is preferable that the second bracket is provided to be adjustable in length with respect to the first bracket, the second bracket on which the cooling fan is mounted.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the cooling apparatus according to the present invention. Embodiments of the invention are not limited to what is shown in the accompanying drawings, it is to be understood that various modifications can be made within the scope of the same invention. In addition, the same reference numerals denote the same components.

1 and 2 are an exploded perspective view and an assembly view of the cooling apparatus according to the present invention. Referring to this, a cooling fan 500, a damper 600, and a fixing member 700 are shown.

The cooling fan 500 has a housing 510 and a blade 520. The housing 510 serves as a frame for rotatably supporting the exterior of the cooling fan 500 and the vanes 520. The blade 520 rotates and flows air. The cooling fan 500 discharges warmed air inside the electronic devices 100 and 110 to the outside, or blows external air into the electronic devices 100 and 110 to cool it. The cooling fan 500 cools by blowing air to an electronic component mounted inside the electronic device 100 or 110 or a heat sink 120 that radiates heat accumulated therein.

The cooling fan 500 is provided with a motor 530 to rotate the blade 520. Although not shown, a sensor for sensing the switching or rotation of the motor 530, a driving circuit for driving the motor 530 and the sensor, a bearing for supporting the rotating shaft of the blade 520, and the like, together with the motor 530. It is preferable to provide.

As will be described later, the fixing member 700 is a means for mounting the cooling fan 500 on the main body frame, the heat sink 120, the bracket 130, and the like of the electronic device 100, 110. In one embodiment, the fixing member 700 is formed with a fastening hole 750 to which the fastening screw 751 is fastened. In one embodiment, the air hole 720 is formed in the fixing member 700 in the center so that air through the cooling fan 500 flows. The damper 600 supporting the cooling fan 500 is fixed to the fixing member 700. When the cooling fan 500, the damper 600, and the fixing member 700 are mounted in the main frame of the electronic device 100, 110, the heat sink 120, the bracket 130, or the like in a pre-assembled state in the manufacturing process, The hassle of assembling the damper 600 is eliminated. That is, the fixing member 700 improves the assembly convenience of the cooling device.

Poor assembly of the damper 600 leads to deterioration of the damper 600 characteristics. If the general user is to assemble the damper 600 itself when mounting the cooling fan 500, there is a fear of assembly failure. The damper 600 is provided together with the cooling fan 500 in a pre-assembled state to the fixing member 700, and the general user can eliminate the fear of poor assembly of the damper 600 by mounting the assembly to the object (100, 110, 120, 130). .

The damper 600 is interposed between the cooling fan 500 and the outside to absorb vibration and support the housing 510. The damper 600 attenuates transmission of vibration generated in the cooling fan 500 to the outside. The vibration and noise are reduced to improve the user's haptic quality and prevent malfunction of the electronic devices 100 and 110. The eccentric mass of the blade 520 causes vibration. The eccentric mass of the blade 520 within the damping range of the damper 600 is acceptable because it does not adversely affect quality. That is, since the damper 600 damps at least a predetermined amount of vibration, there is a margin to increase the dimensional tolerance and the assembly tolerance of the blade 520. This reduces the cost for manufacturing and quality control of the cooling fan 500.

In addition, the damper 600 attenuates vibration or shock transmitted from the outside to the cooling fan 500. This prevents damage to the blade 520 in rotation and increases the life time of the motor 530 or the bearing (not shown) provided in the cooling fan 500.

The material of the damper 600 is a material having both viscoelasticity and elasticity such as natural rubber, silicone, butyl rubber, hyparon, acrylic, fluorine rubber, urethane, acrylonitrile, and the like.

3A, 3B, and 3C are perspective views illustrating various embodiments of a fixed position of the damper 600 according to the present invention. In one embodiment, the damper 600 is provided at three or more positions spaced apart from each other along the edge of the fixing member 700. This is to stably support at least three points of the cooling fan 500. There is no limitation on the number of installation of the damper 600.

In the case of the reference numeral AA, a rectangular fixing member 700 is shown and the dampers 600 are provided one by one at four corners of the fixing member 700. In the case of the reference numeral BB, a rectangular fixing member 700 is shown, and the damper 600 has three positions such as both end positions of the corners of one side 131 of the fixing member 700 and a center position of the corner of the other side 132. In place. In the case of the reference numeral CC, a rectangular fixing member 700 is shown, and two dampers 600 are provided at four corners of the fixing member 700. The housing 510 of the cooling fan 500 is fastened to the upper side of the damper 600 (see FIG. 1). The shape of the fixing member 700 and the housing 510 is not limited thereto, but may be any shape. In one embodiment, the shape of the fixing member 700 and the housing 510 is preferably a square or circle shape to be symmetrical with respect to the rotation axis.

4A to 4D are a perspective view and a longitudinal sectional view showing various embodiments of the ring-shaped damper 600 according to the present invention. The f-f 'axis is a direction in which loads of the housing 510 and the fixing member 700 act. The eccentric mass of the vanes 520 generates a radial directional vibration component of the vanes 520 on a plane perpendicular to the f-f 'axis. Vibration and shock transmitted to the cooling fan 500 from the outside includes not only the component on the plane perpendicular to the f-f 'axis, but also the f-f' axial component. The damper 600 is preferably capable of absorbing vibration and impact on a plane perpendicular to the f-f 'axis, as well as in the three-axis direction, that is, the f-f' axis direction component.

In an embodiment, the damper 600 may have a ring shape in which upper and lower surfaces thereof are in close contact with the fixing member 700 and the housing 510 along the f-f 'axis. The cross-sectional shape on the ring shape is hollow hollow and solid solid rectangle as shown in Fig. 4a, 'c' shape shown in Fig. 4b, 'b' shape shown in Fig. 3c, Fig. Any of the hollow hollow and hollow solid circles shown in 3d may be used. Although not shown, coupling members such as coupling screws or coupling bosses penetrating the central hole 650 of the damper 600 such that the upper and lower surfaces of the damper 600 are in close contact with the fixing member 700 and the housing 510, respectively. Is preferably provided.

5 is a perspective view and a longitudinal sectional view of the damper 600 of the janggu shape according to the present invention. In one embodiment, the damper 600 has a long gear shape in which both ends of the longitudinal section are concave, and the fixing member 700 and the housing 510 are preferably fitted at both ends. The housing 510 and the fixing member 700 are provided with fixing holes 540 and 710 into which the narrow portions are fitted. As in the case of the ring-shaped damper 600 described above, an embodiment in which the fixing member 700 and the housing 510 are in close contact with both ends of the f-f 'axial direction of the long-shaped damper 600 is also possible, although not shown. In this case, coupling members (not shown) may be provided to penetrate the central hole 650 of the damper 600 such that the upper and lower surfaces of the damper 600 are in close contact with the fixing member 700 and the housing 510, respectively. have.

6 is a perspective view and a longitudinal sectional view showing a damper 600 having a concave central portion according to the present invention. In one embodiment, the damper 600 has a concave shape at the center of the longitudinal section thereof, and preferably, any one of the fixing member 700 and the housing 510 is fitted at the center. One of the fixing holes 540 and 710 provided in the housing 510 and the fixing member 700 is fitted into the concave portion. Similar to the above-described ring or janggu damper 600, although the embodiment in which the fixing member 700 and the housing 510 are in close contact with both ends of the ff 'axial direction of the damper 600, the center portion is not shown, but also possible Do. In addition, a coupling member (not shown) may be provided to penetrate the central hole 650 of the damper 600 such that the upper and lower surfaces of the damper 600 are in close contact with the fixing member 700 and the housing 510, respectively.

7 and 8 are perspective views illustrating cooling apparatuses mounted on the main body frames of the electronic apparatuses 100 and 110 according to an embodiment of the present invention. As an example, FIG. 7 illustrates an embodiment in which the cooling apparatus of the present invention is mounted on a main frame of a power supply 100 for supplying power to a computer 110 or a printer. As an example, FIG. 8 shows an embodiment in which the cooling apparatus of the present invention is mounted on a main body frame such as a computer 110 or a printer. Details of the cooling fan 500, the damper 600, and the fixing member 700 are the same as those described above with reference to FIGS. 1 to 6.

9 is a perspective view illustrating a cooling apparatus including a heat sink 120 as an embodiment according to the present invention. The illustrated cooling device includes a heat sink 120, a cooling fan 500, a damper 600, and a fixing member 700. The heat sink 120 is in contact with the heating element such as the CPU 121, other chip components, and receives the heat and radiates to the surroundings. The cooling fan 500 cools the heat accumulated in the heat sink 120. The fixing member 700 is assembled to the heat sink 120 in a state in which the damper 600 and the cooling fan 500 are assembled together. Details of the cooling fan 500, the damper 600, and the fixing member 700 are the same as those described above with reference to FIGS. 1 to 6.

10 is a perspective view showing a cooling apparatus including the bracket 130 as an embodiment according to the present invention. 11 is an assembly perspective view of a cooling apparatus including the bracket 130 as an embodiment according to the present invention. In one embodiment, the cooling apparatus of the present invention includes a cooling fan 500, a damper 600, a bracket 130, a fixing member 700. The bracket 130 approaches the cooling fan 500 to a heating element such as an electronic component located inside the main body frame of the electronic device 100 or 110 or a heat sink 120 mounted to the heating element.

The bracket 130 includes a first bracket 131 fixed to the main body frame, and a second bracket 132 provided to be adjustable in length with respect to the first bracket 131 and to which the cooling fan is mounted. .

The first bracket 131 is fixed to the main body frames of the electronic devices 100 and 110, and the cooling fan 500 is mounted to the second bracket 132 while being supported by the damper 600. The damper 600 assembled with the cooling fan 500 is preferably assembled to the fixing member 700. The fixing member 700 may be assembled to the bracket 130 while changing the position of the cooling fan 500. The fixing member 700 is preferably fastened to the second bracket 132 so that the position can be adjusted. In one embodiment, the bracket 130 is preferably provided with at least one fastening groove 135 for adjusting the fastening position of the fixing member 700. The fixing member 700 is moved in one fastening groove 135 and is fastened to a desired position, or is fastened to a desired position while changing to a desired fastening groove 135 among a plurality of fastening grooves 135. Therefore, even if the first bracket 131 is fixed to the main body frame of the electronic device 100, 110, the cooling fan 500 fixed to the second bracket 132 may be close to an arbitrary position.

At this time, the length of the bracket 130 is also preferably adjustable. In one embodiment, the bracket 130 is preferably provided with a length adjusting portion.

The length adjusting part adjusts the length from the first bracket 131 to the other side 132. In the embodiment shown in FIG. 11, the first bracket 131 and the other side 132 are separated, and the first bracket 131 is fixed to the main frame, and the second bracket 132 is movable based on this. Prepared. In one embodiment, the length adjustment groove 138 is provided in the first bracket 131 and the length adjustment screw 139 is fastened to the second bracket 132. The length adjusting screw 139 passes through the length adjusting groove 138. The length adjusting screw 139 is fastened to the second bracket 132 through the length adjusting groove 138.

The bracket 130 is preferably provided with an air hole 133 so as not to interfere with the flow of air generated from the cooling fan 500. The details of the other cooling fan 500, the damper 600, and the fixing member 700 are the same as those described above with reference to FIGS. 1 to 6.

As described above, according to the cooling apparatus of the present invention, a damper that attenuates the vibration and shock transmitted from the cooling fan and the cooling fan from the outside can be equipped with a simple structure and low cost to feel the quality of electronic equipment Improvement can be aimed at.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

Claims (9)

delete delete delete delete delete delete delete delete A cooling fan rotatably provided with a blade in the housing; A damper made of a viscoelastic material that supports the housing and attenuates vibration generated when the blade rotates and vibration transmitted from the outside to the cooling fan; In the cooling device comprising a; fixing member for supporting the damper, The fixing member is provided with a hole through which air enters; Is fixed to the body frame, and is provided with a bracket for supporting the fixing member to adjust the position, The bracket includes a first bracket having a length adjusting groove of the long hole and fixed to the main frame; A second bracket having a length adjusting screw inserted into the length adjusting groove so as to be adjustable in length with respect to the first bracket, and having a cooling fan mounted thereon; and a fastening position between the fixing member and the fixing member; Cooling apparatus, characterized in that the second bracket is provided with a fastening groove of at least one long hole shape.

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