JPH02213200A - Heat exchanger - Google Patents

Abstract

PURPOSE:To make it possible to close a device hermetically and to make it small in size and to prevent the occurrence of vibration, noise, etc., by a construction wherein the inside of a casing whose one side part is opened is partitioned from an opening by a partition wall to which a heating component is fitted and which is formed of a material of high heat conductivity, while the air inside the casing is made to flow by the drive of a plate-vibrating means provided with said partition wall interposed. CONSTITUTION:While a heating component 2 generates a heat when a power source is charged in the main body 11 of an electric apparatus, a prescribed pulse-form current flows through an electromagnet 6, and thereby a sinusoidal magnetic force is generated to make a vibrating plate 7 vibrate. If a current in a non-audio band of frequency of about 10Hz is let to flow on the occasion, noise or the like does not occur in the main body 11 of the electric apparatus. The vibrating plate 7 can vibrate flexibly since it has a certain degree of heat resistance and since it is connected in the opposite ends by an elastic material 8 having elasticity. By making the vibrating plate 7 vibrate in a heat exchanger 10 in this way, the air inside the heat exchanger 10 which is heated by the heating component 2 is exhausted outside from an opening 5c and also replaced by cool air around the heat exchanger 10.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a heat exchanger suitable for use in equipment or devices having heat generating components such as semiconductors.

(Prior Art) Conventionally, the heat exchanger used to radiate the heat inside the fl unit to the outside has been a natural air cooling type using an extruded aluminum heat sink or heat vibrator.

There is a forced air cooling type that uses a fan.

(Problem to be solved by the invention) Natural air cooling types require larger equipment.

And since it requires natural convection, v41i! It was difficult to seal it tightly.

In addition, forced air cooling type devices using a fan have problems such as being unsuitable for audio equipment and the like because they use a motor, which generates vibrations and noise.

(Means for Solving Problems) The present invention has been made to solve the above-mentioned problems, and includes: - A partition wall made of a highly thermally conductive material for mounting a heat-generating component inside a casing having an open side. The heat exchanger is partitioned from the opening by a partition wall, and a plate vibrating means is provided through the partition, and the air inside the housing is caused to flow by driving the plate vibrating means. be.

(Example) Example 1 FIG. 1 (A) is a schematic perspective view showing an example of a heat exchanger according to the present invention, and FIG.
FIG. 3 is a sectional view taken along section line A. FIG.

Moreover, FIG. 2 is a schematic perspective view showing a state in which the heat exchanger according to the present invention is attached to an electrical equipment main body.

In FIG. 1, reference numeral 1 denotes a printed circuit board on which electric circuit components are mounted, and a heat generating component 2 such as a power transistor mounted on one end of this printed circuit board 1 is a heat exchanger 10 which is a main part of the present invention. One side wall 4a of a highly thermally conductive heat transfer member 4 having a linear cross-sectional shape and disposed in the center of the housing 5 of
It is fixed with bolt 3. As a result, the heat generating part 2
The heat generated by the heat exchanger 10 is dissipated through the heat exchanger 10. The specific structure of the heat exchanger 10 will be explained below using FIG.

The heat transfer member 4 is formed into a single character shape with a pair of side walls 4a, 4a standing on both sides of the partition wall 4b, and is made of a material with good thermal conductivity, such as copper or aluminum. The main part of the casing 5 is the side wall 4a of the single-shaped heat transfer member 4,
4a is sandwiched from above and below by a pair of halves 5a and 5b made of heat-insulating synthetic 84 resin, forming a flat box body.The negative end face is an opening 5C, and the other faces are 1
It has 4 chains.

The inside of this casing 5 is partitioned into upper and lower halves by the partition wall 4b of the linear heat transfer member 4 from the opening 5a to the inner part. Further, a shielding plate 4d protruding from the Im opening 5C of the housing 5 is provided at one end 4C of the partition wall 4b on the opening 5C side, and at the other end 4e on the inner side,
The diaphragm 7 is connected via a pair of elastic members 8.8.

This diaphragm 7 is made of a magnetic material such as zinc-treated iron, and its upper surface is an electromagnetic drive unit that serves as a plate vibration means installed in the bulge 5d of the housing 5 (half body 5a). It faces the electromagnet 6 at a predetermined interval.

As shown in FIG.
1 al, :? It is attached so that the opening 5C@W is shown in tJ.

Therefore, it is possible to seal the electrical device main body 11, so that foreign matter such as dust does not get mixed into the electrical device main body itself.

Here, when power is turned on to the electrical equipment main body 11, the heat-generating component 2 generates heat, but a predetermined pulsed '1IiiR flows through the electromagnet 6, so that a sinusoidal magnetic force is generated, and the imaging plate Vibrate 7. At this time, the frequency of vibration is 10Hz
If current in the inaudible band is passed before and after the electric device 11, no noise or the like will be generated in the main body 11 of the electric device. Furthermore, the diaphragm 7 has a certain degree of heat resistance and is connected at both ends by an elastic material 8, which allows for flexible imaging.

In this way, the air inside the heat exchanger 10, which is heated by the heat generating component 2 by vibrating the diaphragm 7 within the heat exchanger 10, is discharged to the outside from the opening 5c.
It is also exchanged with cold air around the heat exchanger B10.

In this manner, heat exchange is performed between the heated air inside the heat exchanger 10 and the outside air, so that the durability of the heat generating component 2 is improved. Note that if a current in the non-audible band, for example, the frequency around lOH2, is passed through the electromagnet 6, no noise will be generated, less electromagnetic noise will be generated, heat exchange can be performed efficiently, and electrical equipment can be There is no effect on the main body.

In addition, the partition wall 4b can appropriately separate the incoming and outgoing airflow due to the action of the shielding plate 4d at its tip, improving heat exchange efficiency.

Embodiment 2 FIG. 3 is a sectional view showing a second embodiment of the heat exchanger according to the present invention.

In this figure, the same components as those in FIG. 1 are given the same reference numerals and their explanations will be omitted.

This heat exchanger 20 is different from the heat exchanger 10 of the embodiment described above in that a speaker 21, which is another electromagnet drive unit, is fixed to the upper surface (or lower surface) within the bulging portion 5d of the housing 5 instead of the electromagnet 6. In addition, instead of the diaphragm 7 in the above embodiment, a cone 122 of a speaker 21 having a known configuration has an elastic member 8, which is an edge thereof, connected to the other end 4e of the partition wall 4b.

In the heat exchanger 20 configured as described above, the speaker 21 has a predetermined sine wave. Jl flow 1 and speaker 2
A voice coil (not shown) in the housing 1 is driven and its vibrations are transmitted to the paper cone 22, causing the paper cone 22 to vibrate. As a result, the paper cone 22 vibrates in accordance with the amount of current passed through the speaker 21, and the air inside the heat exchanger 20 is exchanged with the air outside, similar to the heat exchanger 10 described above.
The inside of the electrical equipment body is efficiently cooled.

Embodiment 3 FIG. 4 (A) is a perspective view showing a third embodiment of the heat exchanger according to the present invention, and FIG. It is a diagram.

In this figure, the same components as those in FIG. 1 are given the same reference numerals and their explanations will be omitted.

This heat exchanger 30 differs from the heat exchanger 10 described above in that two partition walls 32 made of a material with high thermal conductivity are used to subdivide the inside of the casing 31, and at the same time two N magnets 6 are used. The two points are that they are arranged to face each other in the inner part of the casing 31, and that the pair of partition walls 32 and 32 are both arranged vertically within the casing 31.

In the figure, 31 is a box-shaped housing having a frontage 31a at one end, and is made of a heat-insulating synthetic resin or the like. Moreover, the inside of this housing 31 is divided into three parts in the left-right direction by a pair of partition walls 32 and 32 arranged in parallel. One fi section 32a of the partition wall 32.32 protrudes outward from the lower surface 31b of the au housing 31, and a heat generating component 33 mounted on the printed circuit board 1 is fixed to a part of the fi section 32a. Here, due to the sinusoidal magnetic force applied by the electromagnet 6, the diaphragm 7, which is connected to the two partition walls 32 and 32 via the elastic material 8, has uneven vibration directions on the left and right due to the influence of gravity. It vibrates symmetrically and smoothly. As a result, heat exchange can be performed without causing the entire heat exchanger to vibrate.

Also, in this embodiment, the opening 3 is similar to other actual flow examples.
Seki IJ facing 1b! 32. Since the shielding plates 32c, 32c are attached that continuously protrude from one end of 32, the exchanged air is less likely to mix at the opening 31a, and the heat inside the electrical equipment is effectively transferred to the outside. It becomes possible to exchange.

In addition, in the above embodiment, ti is used as the plate vibration means.
Although N stones and speakers are used, it is of course possible to provide the heat exchanger of the present invention by using shape memory alloys, piezoelectric elements, etc. in addition to these.

(Effects of the Invention) As described above, according to the heat exchanger of the present invention, a partition wall made of a material with high thermal conductivity to which a heat-generating component is attached is used to open the opening in a housing having an opening on the side. The housing is further partitioned, and a plate vibrating means is provided through the partition wall, and the air inside the housing is caused to flow by driving the plate vibrating means. The apparatus can also be made compact and easily miniaturized by having the opening of the heat exchanger of the present invention facing the outside of the apparatus. In addition, for example, it is possible to vibrate the diaphragm and speaker at a frequency of around 10H2 in the inaudible band, so it is possible to provide a heat exchanger that does not generate any vibration or noise for the electrical equipment itself. shall be.

[Brief explanation of the drawing]

FIG. 1(A) is a schematic perspective view showing one embodiment of the heat exchanger according to the present invention, FIG. 1(B) is a sectional view taken along the line A-A in FIG. The figure is a schematic perspective view showing a state in which the heat exchanger according to the present invention is attached to the main body of an electrical equipment, FIG. 3 is a sectional view showing a second embodiment of the heat exchanger according to the present invention, and FIG.
FIG. 4(A) is a perspective view showing a third embodiment of the heat exchanger according to the present invention, and FIG. 4(B) is a sectional view taken along the line B-8 in the same figure (Δ). 10.20.30... Heat exchanger, 2... Heat generating parts,
4... Heat transfer member, 4b, 32... Partition wall, 7... Vibration plate, 6... Plate vibration means, 8... Elastic material. Patent applicant: Victor Japan Co., Ltd. Representative: Kunio Kawamizu 1z

Claims (1)

[Claims] The interior of the housing having an opening on one side is partitioned from the opening by a positive wall made of a material with high thermal conductivity to which a heat-generating component is attached, and a plate vibrating means is provided via this partition. A heat exchanger that causes air to flow within the housing by driving a vibrating means.