JP2006177326A - Combination structure of cooling fan driving rotor with radiating effect - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combination structure of a rotor having a radiating effect. <P>SOLUTION: The combination structure of the rotor having the radiating effect comprises a cover case 21 formed of metal of high heat conductivity, and a wheel hub 22 with cooling fan blades arranged on the outside. The cover case is provided with an open end 212 forming an opening of an internal space constituted by a sidewall 213 continuous with a blocking end 211. A blocking edge is provided with through holes 2111 open with the internal walls presenting inclined shape. The wheel hub is provided with a fixed part 223 provided with an engaging part 224 hanging down inward from an upper end shoulder part 221, and the fixed part is engaged through the through hole of the cover case and integrally connected to the cover case. A motor for rotationally driving the wheel hub provided with the fan blades is disposed in the cover case and wheel hub and generates heat, but heat is effectively exchanged through the cover case formed of a heat conductive material and exposed to the outside. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a rotor combination structure having a kind of heat dissipation effect. In particular, the present invention relates to a rotor combination structure having a heat dissipation effect that exhibits a cooling action against heat generation of a kind of drive rotor.

As shown in FIG. 1, the known fan rotor combination structure includes a fan frame 11 and a wheel strainer 12.
A support base 111 is installed in the fan frame 11, and a hollow shaft cylinder 112 is installed on the support base 111. A bearing 113 is installed in the shaft cylinder 112, and a motor stator 13 is fitted outside the shaft cylinder 112. Thus, the motor stator 13 can be positioned on the support base 111.
The wheel strainer 12 is a cover body having a blocking side and an opening side, and accommodates an annular case lid 14 therein. The case lid 14 corresponds to the wheel strainer 12 and has a protrusion, and a motor rotor 15 is installed in an annular shape around the inside of the case lid 14. A plurality of fan blades 121 arranged radially are formed outside the wheel strainer 12. One end of the shaft core 16 is connected to the wheel strainer 12, and the opposite end is installed through the bearing 113. Thereby, the wheel strainer 12 and the case lid 14 are rotatably installed on the support base 111.
However, the above known structure has the following drawbacks.
That is, when the motor stator 13 and the motor rotor 15 generate a magnetic field action, the wheel strainer 12 and the case lid 14 are rotated with the phase change, and the motor stator 13 and the motor rotor 15 are rotated with the fan blades 121. Thereby, the cooling fluid is flowed and exhibits a cooling function for an object to be radiated. However, the rotation between the motor stator 13 and the motor rotor 15 is also accompanied by heat generation, but this amount of heat is trapped in the wheel squeeze 12 and is not easily dissipated to the outside. Therefore, a large amount of heat is accumulated in the wheel squeeze 12, which reduces the life of the wheel itself and also increases the amount of heat in the system.

Further, the fan rotor of the “fan rotor” structure shown in US 2004/0045356 includes a wheel strainer with a blocking wall and an inner wall.
A metal ring meshes with the inner wall and is installed in the tubular wheel strainer. An annular magnet is fitted in the metal ring, and a plurality of localization parts are installed in the wheel scraper. Thereby, the metal ring is supported and installed in the wheel strainer.
However, there are also disadvantages in the above structure.
That is, when the wheel strainer rotates, the fluid in the wheel strainer also flows in a spiral shape, but the flow route is not smooth because the through-hole is opened. Therefore, the internal fluid is unlikely to flow out from the through hole position, and the thermal convection efficiency is low.
Further, since the wheel strain is made of a plastic material, it is difficult to cause a heat conduction effect, and cooling due to natural convection between the amount of heat in the wheel strain and an external fluid cannot be assisted. Therefore, the overall heat dissipation effect cannot be increased.
U.S. Patent No. 2004/0045356 JP 2004-134423 A

In the present invention, the cover case has at least one through-hole whose inner wall has an inclined shape, and the through-hole is larger than the fixed portion, so that the fixed portion is penetrated and engaged, and the inclined shape of the through-hole is Through the inner wall, the fluid is smoothly drawn, and by making it go in and out more quickly than the through hole, the heat convection efficiency can be improved and the heat dissipation effect can be enhanced,
Further, the present invention reduces the area where the wheel strainer covers the outer surface of the cover case, exposes the top of the cover case to the outside, and has a heat dissipation effect that can achieve the characteristics of rotor heat removal by natural convection. This provides a combination structure.

In order to solve the above problems, the present invention provides a rotor combination structure having the following heat dissipation effect.
It mainly includes at least a cover case, a wheel strainer,
The cover case has a closed end and an open end, the closed end continuously forms a side wall, and at least one inclined through hole is opened at the closed end,
The wheel strainer is provided with at least one fixing portion, the fixing portion passes through the through hole of the cover case, and meshes with the closed end;
As a result, the wheel strainer is fixed so as to cover the outer surface of the cover case, and the fixing portion of the wheel strainer penetrates the through hole of the cover case, so that the wheel strainer is placed on the outer surface of the cover case. It is a combined structure of a rotor having a heat dissipation effect that is installed and draws fluid through the through hole to flow and enter and exit in the cover case.

  As described above, the present invention forms at least one through hole whose inner wall has an inclined shape in the cover case, and since the through hole is larger than the fixed part, the fixed part penetrates and is engaged, The fluid is smoothly guided through the inclined inner wall of the hole, and the heat convection efficiency can be improved and the heat radiation effect can be enhanced by allowing the fluid to enter and exit from the through hole more quickly. Furthermore, the present invention can reduce the area of the wheel squeeze covering the outer surface of the cover case, expose the top of the cover case to the outside, and achieve rotor heat removal characteristics by natural convection.

As shown in FIGS. 2, 3, and 4, the present invention includes at least a cover case 21 and a wheel strainer 22.
The cover case 21 has a closed end 211 and an open end 214. The closed end 211 continuously forms a side wall 213, and the closed end 211 is the apex wall of the cover case 21.
A space surrounded by the closed end 211, the open end 214, and the side wall 213 forms an installation chamber 212. A through hole 2111 penetrating the closed end 211 is formed at the periphery of the closed end 211, and the inner wall of the through hole 2111 is inclined (see FIG. 3) or non-inclined (not shown) in the optimum embodiment. is there. The wheel strainer 22 has an annular shape and is fixed on the outer surface of the cover case 21.

The cover case 21 is made of a material such as a metal having a high heat conduction effect.
The wheel squeeze 22 includes a shoulder 221, and a wheel squeeze wall 222 extending downward is formed at the outer end of the shoulder 221. A fixing portion 223 protruding downward is formed at the inner end of the shoulder portion 221, and an engaging portion 224 is formed at the end of the fixing portion 223.
At the time of assembly, the fixing portion 223 passes through the through hole 2111 of the blocking end 211, and the engaging portion 224 at the end of the fixing portion meshes with the inner surface of the blocking end 211 (see FIG. 3). The wheel squeezing wall 222 is in close contact with the side wall 213 of the cover case 21, whereby the shoulder 221 is installed on the outer surface of the closed end 211 between the through hole 2111 and the side wall 213. Thus, the wheel strainer 22 is fixed so as to cover the outer surface of the cover case 21, and the outer surface of the closed end 211 of the cover case 21 is exposed.
The through-hole 2111 is larger than the fixing portion 223, and the fixing portion 223 approaches one side of the through-hole 2111 and engages with the inner surface of the blocking end 211. At this time, the space that is not covered by the fixing portion 223 of the through-hole 2111 is used for entering and exiting the cooling fluid.

Subsequently, as shown in FIGS. 2, 3, and 4, the present invention includes a fan frame 23 and an axis 25 similar to the conventional structure shown in FIG.
A hollow support base 231 is formed in the fan frame 23, and a bearing 232 is installed in the support base 231. A motor stator 26 is installed on the support base 231.
One end of the shaft core 25 is connected to the cover case 21, and the opposite end penetrates the bearing 232 and is rotatably supported on the support base 231. The wheel squeeze wall 222 of the wheel squeeze 22 forms a plurality of fan blades 27 extending radially outward. A motor rotor 28 is installed inside the side wall 231 of the cover case 21 to form a magnetic pole facing the motor stator 26.

Due to the magnetic field action of the motor stator 26 and the motor rotor 28, the cover case 21 and the wheel squeeze 22 are rotated, the fan blades 27 are further rotated, and the cooling fluid is moved. Since the rotation between the motor stator 26 and the motor rotor 28 is accompanied by heat generation, the fluid temperature in the installation chamber 212 of the cover case 21 rises, but on the other hand, the amount of heat is transferred to the cover case 21 having a high heat conduction effect. The heat exchange effect of natural convection occurs through the portion exposed to the outside of the cover case 21. On the other hand, the fluid whose temperature has increased in the wheel squeeze 22 flows out through the through hole 2111 in the closed end 211 of the cover case 21. In this way, the amount of heat between the motor stator 26 and the motor rotor 28 can achieve a significant heat dissipation action and extend the service life of the entire structure.
Further, the wheel strainer 22 can be adhered on the cover case 21 with an adhesive between the cover case 21 and the wheel strainer 22.
The above is the description of the optimum embodiment of the present invention, and all changes in the above-described method, shape, structure and apparatus using the present invention are included in the scope of the present invention.

It is a section indication figure of a publicly known fan structure. It is a three-dimensional local section instruction | indication figure of the optimal Example of this invention. FIG. 3 is a local enlargement instruction diagram in which the fixing portion of FIG. It is an indication figure of the through-hole wall inclination of the optimal example of the present invention. FIG. 5 is an instruction diagram for applying an optimum embodiment of the present invention to a motor rotor and a stator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Fan frame 111 Support stand 112 Shaft cylinder 113 Bearing 12 Wheel strainer 121 Fan blade 13 Motor stator 14 Cover lid 141 Protrusion part 15 Motor rotor 16 Shaft core 222 Wheel strainer wall 223 Fixing part 224 Engaging part 21 Cover case 23 Fan frame 211 Sealed end 231 Support base 2111 Through hole 232 Bearing 212 Installation chamber 25 Shaft core 213 Side wall 26 Motor stator 214 Open end 27 Fan blade 22 Wheel strainer 28 Motor rotor 221 Shoulder

Claims (8)

It consists of a wheel stiffener and a cover case provided with cooling fan blades on the outer periphery and a space for accommodating the stator of the driving motor and the rotor mechanism inside,
The cover case has a closed end that seals the space and forms a side wall continuous to the closed end;
The wheel strainer is installed on the outside by joining in contact with the side wall of the cover case,
In the coupling structure, a through hole is formed in the closed end edge, and at least one fixing portion that hangs down toward the through hole is provided on the upper edge of the wheel strainer, The wheel strainer is fixed by covering the outer surface of the cover case by engaging through the through hole of the cover case,
The upper surface of the cover case sealing end exposed to the outside dissipates the heat generated by the motor in the squeeze and improves the cooling efficiency by allowing the cooling fluid to flow through the through hole.
Cooling fan drive rotor combination structure with heat dissipation.   2. The cooling fan drive rotor combination structure according to claim 1, wherein the closed end is a top wall of the cover case.   The combined structure of a cooling fan drive rotor having a heat radiation effect according to claim 1, wherein an engaging portion is formed in the fixed portion of the wheel strainer.   The combined structure of a cooling fan drive rotor having a heat radiation effect according to claim 1, wherein the wheel strainer and the cover case are adhered by an adhesive.   The combined structure of a cooling fan drive rotor having a heat dissipation effect according to claim 1, wherein the through hole is larger than the fixed portion.   2. The cooling fan drive rotor combination structure according to claim 1, wherein the cover case is made of a material having a high heat conduction effect.   The combined structure of a cooling fan drive rotor having a heat dissipation effect according to claim 6, wherein the material having a high heat conduction effect is metal.   The combined structure of a cooling fan drive rotor having a heat radiation effect according to claim 1, wherein the inner wall of the through hole at the closed end of the cover case is inclined.

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