JPH07336076A - Cooler for board using vortex tube - Google Patents

Abstract

PURPOSE:To provide a cooler, for a board, which uses a vortex tube which can cool the inside of the board without a need of a complicated air-pipe-laying operation. CONSTITUTION:At least an air compressor 3, a heat exchanger 4 which cools compressed air and a vortex tube 9 into which cooled compressed air is blown are incorporated into the inside of a case 2. This assembly is attached to the outside face of a board 1, and the inside of the board 1 is cooled directly or indirectly by a cooling air which is generated by the vortex tube.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a board cooler using a vortex tube for cooling the inside of a board such as a control board.

[0002]

2. Description of the Related Art A vortex tube comprises a tube 23 having an orifice 21 at one end and a donut-shaped opening 22 at the other end as shown in FIG.
When compressed air is blown tangentially from the nozzle 24 into the inside of 23, a high-speed swirling flow is generated, and the temperature drops in the central part due to the pressure difference between the central part and the outer peripheral part, and conversely in the outer peripheral part. Is a device that is designed to raise the temperature. The cold air in the central portion is taken out from the orifice 21, and the warm air in the outer peripheral portion is taken out from the annular opening 22.

If such a vortex tube is used, cold air can be easily obtained with a compressed air source. Therefore, it has been used for a long time to send cold air to an operator in a hot work place or the like. FIG. 5 shows a conventional cooling device using a vortex tube. The upper stage of compressed air obtained by an air compressor 25 is reduced in humidity by an air dryer 26, dust is removed by a filter regulator 27, and then sent to a vortex tube 30. Method of
Dust is removed by filter regulator 27 and anti-freezer
The lower method of removing water by 28 and sending it to the vortex tube 30 is illustrated.

[0004]

However, a conventional cooling device using a vortex tube is one in which compressed air is introduced from a separately placed air compressor to the vortex tube by an air pipe. There is a problem that complicated air piping work is required when it is used for cooling the inside of a panel such as a control panel. The present invention has been made to solve the above-mentioned conventional problems and provide a cooler for a board using a vortex tube that can cool the inside of the board without requiring complicated air piping work. .

[0005]

SUMMARY OF THE INVENTION The present invention, which has been made to solve the above-mentioned problems, has at least an air compressor, a heat exchanger for cooling compressed air, inside a case attached to the outer surface of a board. A vortex tube into which cooled compressed air is blown is provided, and the board is cooled by the cold air generated by the vortex tube.

[0006]

According to the present invention, since the air compressor, the heat exchanger and the vortex tube are provided inside the case attached to the outer surface of the board, the board can be cooled without the need for air piping work. Further, since the air compressed and heated by the air compressor is cooled by the heat exchanger and then supplied to the vortex tube, the temperature of the cold air can be sufficiently lowered and a high cooling effect can be obtained.

[0007]

The present invention will be described in detail below with reference to the embodiments shown in the drawings. FIG. 1 shows a first embodiment, in which 1 is a board such as a control board to be cooled, and 2 is a case of a cooler attached to the outer surface thereof. Reference numeral 3 denotes an air compressor provided inside the case 2. In this embodiment, the air inside the case 2 is sucked into compressed air. Reference numeral 4 denotes a heat exchanger for cooling this compressed air, which is provided with a blower 5. The blower 5 blows the air sucked through the filter 6 attached to the wall surface of the case 2 to the heat exchanger 4 to cool the compressed air.

An air dryer 7 removes moisture in the compressed air cooled by the heat exchanger 4 to reduce the humidity. An oil filter 8 removes the oil component in the compressed air. The compressed air from which water and oil have been removed in this way is blown into the vortex tube 9 through the nozzle 10. The structure of the vortex tube 9 is as described above, and in this embodiment, the cold air taken out from one end of the vortex tube 9 is directly blown into the inside of the board 1.

As described above, the board cooler of the embodiment has the air compressor 3, the heat exchanger 4, the air dryer 7, the oil filter 8, inside the case 2 attached to the outer surface of the board 1.
Since all the vortex tubes 9 and the like are incorporated, it is possible to directly cool the inside of the board 1 without requiring any piping work. In addition, the compressed air discharged from the air compressor 3 is transferred to the heat exchanger 4
Since it is cooled by the above, the temperature of the cold air taken out from the vortex tube 9 can be sufficiently lowered, and a high cooling effect can be obtained.

In this embodiment, since the cold air taken out from the vortex tube 9 is blown directly into the inside of the board 1, the pressure adjusting valve 11 is provided on the wall surface between the board 1 and the case 2.
Is installed to adjust the pressure inside the panel 1. By thus setting the pressure inside the panel 1 to be always higher than the outside air, there is also an effect that dust and the like will not enter the inside of the panel 1 from the outside due to the air purge effect.

FIG. 2 shows a second embodiment. The air compressor 3 has a suction port opened to the side of the board 1 so that the air inside the board 1 is sucked and compressed. This is different from the first embodiment. In this embodiment, since the air in the panel 1 is circulated and used, there is an advantage that dust is not sucked together with air from the outside.

In the first and second embodiments described above,
Although the cool air taken out from the vortex tube 9 was blown directly into the inside of the board 1, in the third embodiment shown in FIG. 3, a cooler 12 and a blower 13 were provided below the vortex tube 9 and taken out from the vortex tube 9. The cold air passes through the cooler 12 and is returned to the case 2. Then, the air in the panel 1 is sucked by the blower 13, cooled by the cooler 12 and returned to the panel 1.

If such an indirect cooling system is used, the board 1
Since there is no exchange of air between the inside and outside of the board, it is possible to completely prevent dust and the like from entering the inside of the board 1 from the outside. In addition, the cool air passing through the cooler 12 is supplied to the air compressor 3
There is also an advantage that the temperature of the compressed air can be lowered by sending the compressed air near the suction port.

[0014]

As described above, the cooler for the board using the vortex tube of the present invention can cool the inside of the board without requiring any piping work. Further, since the compressed air is cooled by the heat exchanger and then supplied to the vortex tube, a high cooling effect can be obtained. Furthermore, if the method of blowing cold air into the inside of the board is adopted as in the first and second embodiments, the invasion of dust and the like from the outside can be prevented by the air purging effect, and the indirect cooling method as in the third embodiment. With the adoption of, there is no exchange of air inside and outside the panel, and there is also an advantage that dust and the like does not enter from the outside.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a first embodiment.

FIG. 2 is a sectional view showing a second embodiment.

FIG. 3 is a sectional view showing a third embodiment.

FIG. 4 is a cross-sectional view illustrating the principle of a vortex tube.

FIG. 5 is a piping system diagram of a conventional cooling device using a vortex tube.

[Explanation of symbols]

 1 panel 2 case 3 air compressor 4 heat exchanger 5 blower 6 filter 7 air dryer 8 oil filter 9 vortex tube 10 nozzle 11 pressure adjusting valve 12 cooler 13 blower 21 orifice 22 donut-shaped opening 23 tube 24 nozzle 25 air compressor 26 Air dryer 27 Filter regulator 28 Antifreezer 30 Vortex tube

Claims (4)

[Claims] 1. A vortex tube provided with at least an air compressor, a heat exchanger for cooling the compressed air, and a vortex tube into which the cooled compressed air is blown, inside the case attached to the outer surface of the panel. A cooler for a board using a vortex tube, characterized in that the board is cooled by the cold air generated by. 2. The cooler for a board using a vortex tube according to claim 1, wherein the air compressor sucks and compresses the outside air, and the cold air generated by the vortex tube is blown directly into the inside of the board. . 3. The vortex tube according to claim 1, wherein the air compressor sucks and compresses the air in the board, and cool air generated by the vortex tube is blown directly into the board. Cooler for the board. 4. The cooler for a board using a vortex tube according to claim 1, wherein the cold air generated by the vortex tube indirectly cools the inside of the board via a cooler.