JPH11340669A - Waste-heat equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discharge hot air outside without using a fan by installing suction exhaust vents, which have aperture parts in a part positioned inside a cabinet of a wind tunnel for guiding waste heat of a fan cooling directly a heat generating element to the outside of the cabinet, and take cold external air into the cabinet. SOLUTION: Guide plates 40, 42 are installed in the outer periphery of an aperture 33 of a heat sink 32, setting waste heat hole 13 as an exhaust part, and constitute a channel for hot air inside other cabinet 10. That is, an aperture part 46 capable of almost smooth convection from other heat generating parts except an MPU cartridge 30 is installed. Cold air sucked by a fan 34 for an MPU passes the heat sink aperture part 33 from a heat sink 32 and is discharge from the waste head holes 13. The hot air inside other cabinet 10 can be discharged smoothly to the outside of the cabinet 10 without using a fan.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste heat device used for electronic equipment such as a personal computer, and more particularly to a waste heat device utilizing a negative pressure effect of a wind tunnel flow.

[0002]

2. Description of the Related Art Conventionally, a personal computer, which is a representative of electronic information equipment, has a fan motor for exhausting heat to the outside of the housing. It has a cooling fan and a cooling fan for the MPU cartridge.

FIG. 7 is a transparent view showing a cooling unit structure of a standard tower type personal computer which is a conventional concrete example. In a housing 10 of the personal computer, a fan 22 for cooling itself is built in a device. Shows a heat sink 32 equipped with a built-in power supply 20 and an MPU fan 34 for cooling an MPU cartridge 30 attached to a motherboard (not shown), and cooling air taken in from an intake / exhaust hole 12 provided at a lower rear portion of the housing 10. The waste heat of the power supply 20 and the MPU cartridge 30 is involved, and the waste heat is exhausted to the outside of the housing 10 by a fan motor 14 for waste heat provided on the upper rear surface of the housing 10.

[0004]

In the above-mentioned conventional waste heat apparatus, since the power consumption of the recent MPU has been increasing as its performance has been improved, a detailed power management function for lowering its own temperature has been provided. In addition, the on / off of each cooling fan and the number of rotations are also controlled, but when running advanced application software such as image processing, continuous operation with maximum power consumption is required. No change, the waste heat of the MPU and its power supply diffused inside the housing also increased, and the problem was solved by increasing the capacity of the fan motor 14 for the waste heat to the outside of the housing 10, but the noise was remarkable AV function It was an unsuitable environment for adding additional boards.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention uses a fan having a main heating element at the same level as the conventional one, and can effectively discharge waste heat inside the housing to the outside of the housing without using another fan. It is intended to provide a thermal device.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention mainly comprises changing a heat sink structure for cooling an MPU cartridge to a wind tunnel type having an opening for obtaining a negative pressure drawing effect. Accordingly, at least the waste heat of the MPU cartridge is directly or indirectly wasted to the outside of the housing without diffusing to the inside of the housing, and the fan motor provided for the waste heat to the outside of the housing can be omitted. .

That is, a heat sink for directly cooling or indirectly cooling the main heating element with a heat pipe, a fan for cooling the heat sink, a wind tunnel for guiding the waste heat of the fan to the outside of the housing, and located inside the housing of the wind tunnel. It is a waste heat device used for an electronic device having an opening in part.

More specifically, according to the first aspect, a heat sink for directly cooling a heating element or indirectly cooling it with a heat pipe, a fan for cooling the heat sink, and a wind tunnel for guiding waste heat of the fan to the outside of the housing. And a waste heat device used in an electronic device, which has an opening portion in a part located inside the housing of the wind tunnel, and has an intake / exhaust hole for taking in cool air outside the housing into the housing. I do.

According to a second aspect of the present invention, the air conditioner has an air intake / exhaust hole for taking in cool air outside the housing into the housing, and directly or indirectly contacts the fan with the heat sink. Exhaust from the heat sink opening provided in the direction of the waste heat hole provided in the housing, there is a guide plate between the heat sink opening and the waste heat hole, and the guide plate has an MP.
A waste heat device is provided with an opening capable of discharging hot air from a heating element inside a housing other than the U cartridge to the outside without using a fan.

According to a third aspect of the present invention, there is provided a housing having a first intake hole for taking in cool air outside the housing into the housing, and having a second opening through which cool air flows directly into the fan motor. An MPU serving as a main heating element is provided in the housing.
A collector directly or indirectly connected to the PU, a wind tunnel connected to the collector, and a waste heat hole for discharging exhaust gas from the wind tunnel to the outside of the housing; A waste heat device comprising an opening for discharging warm air inside the housing other than the above.

[0011]

FIG. 1 is a view showing a first embodiment of the present invention, and FIG. 2 is a view showing details of disassembly of an MPU cartridge heat sink used in this embodiment.

In the first embodiment, a waste heat hole 13 is provided in the vicinity of the housing 10 where the MPU cartridge 30 is arranged. The MPU cartridge 30 serves as a main heating element. A heat sink 32 is in close contact with the flat surface of the MPU cartridge 30. The configuration of the heat sink 32 is as shown in FIG. 2, and an MPU fan 34 is embedded in a stepped portion of a fin provided inside, and the outer wall is covered with a cover 34. The cover
A guide frame 40 through which cold air flows into the MPU fan 34 is attached to the MPU fan 34. That is, the heat sink 32
The cool air sucked from the PU fan 34 can be discharged only from the direction of the waste heat holes 13. Guide plates 40 and 42 are provided on the outer periphery of the opening 33 of the heat sink 32. The guide plates 40 and 42 use the waste heat hole 13 as an exhaust portion and provide a flow path for the warm air inside the other housing 10, that is, such that the convection from other heat generating portions other than the MPU cartridge 30 can be smoothly performed. It has an opening 46,
The cool air sucked by the MPU fan 34 is used as a heat sink
The air is discharged from the waste heat hole 13 from the heat sink 32 through the heat sink opening 33, and the warm air inside the other housing 10 can be smoothly discharged to the outside of the housing 10 without using a fan.

More specifically, in the first embodiment, the air intake / exhaust hole at the bottom of the housing shown in FIG.
Aside from the upper surface of the MPU fan 34, a waste heat hole 13 is provided near the upper surface of the MPU fan 34 as a second air intake / exhaust hole to prevent air leakage.
The cooling air of the MPU cartridge 30 is directly taken in from the outside through 42 and 44. The structure of the heat sink 32 of the MPU cartridge 30 is such that the MPU
The fan 34 is attached, and a guide frame is provided around the fan 34.
40 is attached, a wind tunnel is formed by the guide frame 40, the wind tunnel extends near the exit of the waste heat hole 13 of the casing 10, and further between the waste heat hole 13 of the casing 10 from the wind tunnel. Guide plates 42 and 44 are provided.

The waste heat operation of the above embodiment will be described with reference to FIG. 3, which is a sectional view taken along the line AA of FIG. 1 as viewed in the direction of the arrow. The rotation of the MPU fan 34 provided in the housing 10 The cold air outside the housing 10 is taken directly into the housing 10,
Heat sink 32 attached to MPU cartridge 30
, The cooling efficiency of the MPU itself is improved.

The air after the heat exchange is rectified through the wind tunnel formed by the heat sink 32 and the guide frame 40, and is passed through the waste heat holes 13 of the housing 10 to the outside without being disturbed by the guide plates 42 and 44. MPU such as power supply 20 while being discharged
The air inside the housing 10 warmed by the heat released from the electronic components other than the cartridge 30 is sucked by the negative pressure near the inner wall of the housing 10 that has exited the wind tunnel type heat sink 32 from the opening 46, and It is led to the waste heat hole 13 of the body 10.

That is, waste heat other than the MPU cartridge 30 enters the housing 10 through the suction / exhaust hole 12 and is discharged from the waste heat hole 13 through the opening 46 on the side surface of the wind tunnel by the negative pressure. A special waste heat fan such as the waste heat fan motor 14 is not required.

The point to be noted here is that the MPU cartridge 30
Is that the waste heat flow is not diffused into the housing 10 and
The waste heat flow of electronic components other than PU cartridge 30 is also M
The purpose is to minimize the influence of the PU cartridge 30 on the heat sink 32. As a result, the heat exchange efficiency is increased because the waste heat does not affect each other.

Next, a second embodiment of the present invention will be described. FIG. 4 is a perspective view of a notebook personal computer having a waste heat device according to a second embodiment of the present invention, and FIG. 5 is an enlarged view of an MPU cooling wind tunnel type heat sink as a waste heat device portion of FIG. FIG. 6 shows the waste heat paths in FIG. 4 respectively.

In FIGS. 4, 5 and 6, a first air inlet 52 and a second air inlet 53 are provided on the upper surface of a main body housing 50 of the notebook personal computer. 20 and an MPU 60 serving as a main heating element are arranged. The MPU 60 is equipped with the following waste heat device. The waste heat device is mounted on the upper surface of the MPU 60 attached to the motherboard,
An axial fan motor 54 is mounted via a metal plate 56 excellent in heat transfer. Air intake of the axial fan motor 54 is performed from the second intake hole 53. A wind tunnel 70 is attached to an exhaust portion of the axial fan motor 54. The exhaust of the wind tunnel 70 is made from the waste heat holes 13 provided on the side surface of the housing 50. Further, an opening 74 is provided in a part of the wind tunnel 70, and the air is sucked through the first air inlet 52,
Hot air collected from a heating element other than the MPU in the casing 10 is taken in, and is discharged from the waste heat hole 13 to the outside of the casing 10 only by the fluid action of the axial fan motor 54.

The second embodiment will be described in more detail.
A metal plate 56 with excellent heat transfer is provided on the upper surface of the MPU 60 attached to the motherboard inside the main body 50 of the notebook personal computer.
An axial fan motor 54 is attached through the cooling fan, and the cooling air sucked from the outside of the housing 50 by the axial fan motor 54 hits the metal plate 56, and then a heat sink is integrally formed with the metal plate 56. The air is guided to the outside of the housing 50 while being rectified through the built-in wind tunnel 70.

A slit hole 72 is provided in a part of the wind tunnel 70, and mainly due to the negative pressure generated by the wind tunnel flow, M
The heat inside the casing 50 that is waste heat by the power supply 20 and other electronic components other than the PU 60 is drawn into the wind tunnel 70.

The first intake hole 52 serving as a suction hole into the inside of the housing 50 may share a hole opened in a speaker or a microphone mounting portion without providing a special hole.

When the notebook personal computer is formed into a thin case, the axial fan motor 54 cannot be directly mounted on the upper surface of the MPU 60 due to the limitation of the thickness of the case. Attach the end of the collector using a member with excellent heat conduction such as a flat heat pipe, extend the other end of the collector, detach from the upper part of the MPU 60 and attach the wind tunnel 70 to the wind tunnel 70. It can be applied as appropriate, such as attaching an axial fan motor 54 to waste heat.

In each of the above embodiments, the MPU
The heat inside the housing is released to the outside of the housing by using the fan 34 and the axial fan motor 54 without using another fan.
As long as the dimensions do not disturb the flow created by the axial flow fan motor 54 or the axial flow fan motor 54, the dimensions can be changed as appropriate.

In each of the above embodiments, the heat sink is directly adhered to the MPU cartridge 30 or MPU 30 as the main heating element, but a material having excellent heat conductivity such as a heat pipe is interposed between the two. Then, the heating element and the heat sink may be connected indirectly.

[0026]

As described above in detail, according to the present invention, a wind tunnel is used as a heat sink of a main heating element, and a hole for sucking a negative pressure is opened in this wind tunnel, and only a waste heat is generated. It is possible to obtain a low-noise and high-cooling-efficiency waste heat device in which the fan motor can be omitted.

That is, the waste heat other than the MPU cartridge 30 enters the housing 10 through the suction / exhaust hole 12 and is discharged from the waste heat hole 13 from the side surface of the wind tunnel by the negative pressure. No special waste heat fan like 14 is needed. Here, since the waste heat flow of the MPU cartridge 30 does not diffuse into the casing 10, the MPU cartridge 30
The waste heat flow of electronic components other than the MPU cartridge 30
The effect on the heat sink 32 can be minimized, so that the mutual waste heat does not affect the heat sink 32, thereby increasing the heat exchange efficiency.

Although the space inside the housing of a notebook personal computer is extremely narrow due to recent improvement in portability of the notebook personal computer, in order to adopt a recent high-performance MPU, it is necessary to use a dedicated MPU like a tower personal computer. Often, a special heat sink is used. However, conventionally, cooling of the MPU is mainly performed, and since the power supply does not consume enough power to have a self-cooling fan, waste heat treatment from other electronic components other than the MPU is sacrificed, Inevitably, the surface temperature of the housing, even if it does not cause low-temperature burns, gives users discomfort, but by using the present invention, the temperature inside the housing is kept at a low temperature. be able to.

[Brief description of the drawings]

FIG. 1 is a partial sectional view showing a waste heat device according to a first embodiment of the present invention incorporated in a personal computer.

FIG. 2 is a disassembled perspective view of the waste heat device used in FIG.

FIG. 3 shows a cross-sectional view of FIG. 1 as viewed from the direction of the arrow.

FIG. 4 shows a view in which a waste heat device according to a second embodiment of the present invention is incorporated in a notebook computer.

FIG. 5 shows an enlarged view of the waste heat device of FIG.

FIG. 6 is a partial side sectional view of FIG. 4, showing the waste heat path;

FIG. 7 shows a structural diagram of a cooling unit of a standard tower type personal computer as a concrete example of the related art.

[Explanation of symbols]

 In the drawings, the same reference numerals indicate the same or corresponding parts. DESCRIPTION OF SYMBOLS 10 Case 12 Intake / exhaust hole 13 Waste heat hole 14 Waste heat fan motor 20 Power supply 22 Power supply fan 30 MPU cartridge 32 Heat sink 33 Heat sink opening 34 MPU fan 36 Cover 40 Guide frame 42, 44 Guide plate 46 Opening 50 Housing Body 52 First intake hole 53 Second intake hole 54 Axial fan motor 56 Metal plate 60 MPU 70 Wind tunnel 74 Opening 72 Slit hole

Claims (4)

[Claims] 1. A heat sink for directly cooling or indirectly cooling a main heating element by a heat pipe, a fan for cooling the heat sink, a wind tunnel for guiding waste heat of the fan to the outside of the housing, and an inside of the housing for the wind tunnel. A waste heat device used in electronic equipment, characterized in that the device has an opening portion in a part of the housing and a suction / exhaust hole for taking in cool air outside the housing into the housing. 2. An air intake / exhaust hole for taking in cool air outside the housing into the housing, a fan is directly or indirectly attached to the heat sink, air is taken into the heat sink from the fan, and air is exhausted from the heat sink. It is performed from the heat sink opening provided in the direction of the waste heat hole provided on the body, and there is a guide plate between the heat sink opening and the waste heat hole, and the guide plate is provided inside the casing other than the MPU cartridge. A waste heat device comprising an opening capable of discharging hot air from a heating element to the outside without using a fan. 3. A housing having a first air intake hole for taking in cool air outside the housing into the housing, and having a second opening through which cool air flows directly into the fan motor, and a main heat generation in the housing. A collector connected directly or indirectly to the MPU, a wind tunnel connected to the collector, and a waste heat hole for discharging exhaust gas from the wind tunnel to the outside of the housing. A waste heat device comprising an opening in a part of a wind tunnel for discharging warm air inside a housing other than a main heating element. 4. The waste heat device according to claim 1, wherein the air intake / exhaust hole also serves as a hole for a speaker or a microphone.