JPH01140944A - Heat-exchanger - Google Patents

Abstract

PURPOSE:To maintain a heat-exchangeability of fins in a heat-exchanger and to prevent lubrication oil from accumulating in the heat-exchanger by providing a drain below the lower end of inclined partition wall, and by coating a nonadhesive film on upper fins and the upper section of the partition wall. CONSTITUTION:An outside air blower 12 draws the outside air from a suction port 13 and discharges the same to the outside from a discharge port 14 through fins 16b. In this arrangement, a partition wall 15 between a first space 9 and a second space 10 in a hear-exchanger 4 is inclined so as to allow lubrication oil such as machining oil or the like to flow down, and accordingly the lubrication oil may be discharged into the outside through a drain 8 without remaining in the heat-exchanger 4. As a result, it is possible to prevent the lowering of the heat-exchangeability of upper fins 16b which occurs when the lubrication oil remains in the inside of the hear-exchanger 4, and detrimental affects to the control function of a control panel 1 which occurs when the lubrication oil enters and contaminates the control panel 1.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a heat exchange device that is installed in a control panel of a machine tool or the like and cools the air inside the control panel.

BACKGROUND OF THE INVENTION Currently, there is a noticeable movement in the machine tool industry to increase machining accuracy and machining speed, and as part of this trend, there is a desire to develop a heat exchange device for control panels that is highly efficient, compact, and easy to use.

A conventional example will be explained with reference to FIGS. 7 to 9.

1 is a control panel for a machine tool, etc. A suction port 2 and a discharge port 3 are provided on the top surface of the control panel 1. 4 is a heat exchange device installed on the control panel. A horizontal partition plate 5 is disposed inside this heat exchange device 4, and this partition plate 6 has upper fins AB at the top and lower fins 6aQ at the bottom.
? It has J number of 6 fins. Further, this partition plate 6 has a lower part closed by an end plate 7 for inside air, and an upper part closed by an end plate 8 for outside air, thereby forming two spaces. Internal air end plate 7
The space inside the heat exchange device 4 that is partitioned by the partition plate 6 is called a first space 9, and the space inside the heat exchange device 4 that is partitioned by the outside air end plate 8 and the partition plate 6 is called a second space 10. An outside air inlet 13 and an outside air outlet 14 are open in the second space 1o. An inside air blower 11 is installed in the first space 9, and an outside air blower 12 is installed in the second space 10.

The internal air blower 11 functions to suck air inside the control panel 1 from the suction port 2, pass through the lower fin 6a, and discharge it into the control panel 1 from the discharge port 3. The outside air blower 12 also functions to suck outside air through the outside air suction port 13, pass through the upper fin 6b, and discharge it to the outside from the outside air discharge port 14.

In the above configuration, the air temperature inside the control panel 1 is much higher than the outside air temperature due to the heat generated by the electronic devices inside the control panel 1 (for example, when the outside temperature is 3° and the temperature inside the control panel is 60 to 'c), but the heat of the air sucked into the first space 9 from the suction port 2 is led to the lower fin 6a, via the partition plate 6, and then to the upper fin 6b.
Furthermore, as a result of the outside air being sucked in from the outside air suction port 13 and released into the second space 1o, the rise in the air temperature inside the control panel 1 is suppressed, and the temperature at which the reliability of the electronic equipment inside the control panel 1 can be maintained ( For example, when the outside temperature is 30°C, the temperature inside the control panel is 40°C.
~60°C).

Problems to be Solved by the Invention However, the conventional examples had the following problems. In other words, in recent years, there has been a noticeable movement in NC machine tools to use lubricating oils with significantly lower viscosity, such as cutting oils, in order to increase the varnish bead. This is the heat exchange device 4 for cooling the control panel.
The lubricating oil is sucked into the heat exchanger and accumulates inside the fins 6b, resulting in a significant decrease in the heat exchange performance of the fins 6.Also, the lubricating oil accumulates inside the heat exchanger, and some of it may enter the control panel. As a result of contamination, there were problems such as adverse effects on control functions of machine tools, etc.

In view of the above problems, the present invention provides a structure that maintains the heat exchange performance of the fins in the heat exchange device and prevents lubricant oil from accumulating inside.

Means for Solving the Problems In order to solve the above problems, the heat exchanger of the present invention has a configuration in which the partition plate is inclined and a drain is provided below the slope. A non-adhesive skin pattern is applied to the top of the board.

Function The present invention has the above-mentioned structure in which the partition plate is tilted to cause the lubricating oil attached to the fins to flow down in the direction of the slope, and by providing a drain below the slope of the partition plate, the lubricating oil is caused to flow down. It becomes possible to discharge lubricating oil to the outside of the heat exchange device without accumulating it.

Embodiment A first embodiment of the present invention will be described below with reference to FIGS. 1 to 3. Components that are the same as those of the prior art will be denoted by the same reference numerals, and detailed explanation thereof will be omitted.

The partition plate 15 is inclined at a minimum of about 3 degrees in the direction of flow of outside air. This partition plate 16 is provided with a plurality of fins 16 including upper fins 16 on the top and lower fins 16a on the bottom. Further, a backing plate 17 is provided at the lower part of the first space 9 and at the upper part of the second space 10, so that the air inside the control panel 1 and the outside air can each effectively pass through the inside of the fan 16.

A drain 18 is provided below the slope of the partition plate 16.

In the above configuration, the outside air blower 12 sucks outside air from the outside air intake port 13, passes through the fins 1eb, and discharges it to the outside from the outside air outlet 14.

At this time, when the fine particles of lubricating oil contained in the outside air pass through the upper fin 16b, they adhere to the surface of the upper fin 16b, but they flow downward from the upper fin 1csb and are further collected on the partition plate 15. It flows in the direction of the inclination of the partition plate 15. Since the drain 18 is provided in the direction of the inclination of the partition plate, the collected lubricating oil is effectively discharged to the outside of the heat exchange device 1 through the drain 18.

As described above, according to this embodiment, by making the partition plate 16 between the first space 9 and the second space 1o in the heat exchange device 4 inclined, lubricating oil such as cutting oil that adheres to the inside of the second space 10 , can be allowed to flow down the slope and further be discharged to the outside through the drain 18 without accumulating in the heat exchange device 4.

Furthermore, as a result, it is possible to prevent the deterioration of the heat exchange performance of the upper fin 1eb caused by lubricating oil remaining inside the heat exchange device 4, and the adverse effect on the control function caused by contamination entering the control panel 1. .

A second embodiment of the present invention will be described below with reference to FIGS. 4 to 6. The same components as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. Omitted. 1st
The difference from the above embodiment is that a non-adhesive film (for example, fluororesin coating) 19 is thinly applied to the upper surface of the partition plate 16 and the surface of the upper fin 16b.

In the above configuration, the operation is similar to that of the first embodiment, but the outside air containing fine particles of lubricating oil is transferred to the second space 1.
0, and the lubricating oil adheres to the surface of the upper fin 16b, but since a thin film of the non-adhesive film 19 is applied to the surface of the fin 16b, the lubricating oil has less fluidity than if it were not coated. It becomes easier to flow downward. The lubricating oil flowing downward flows in the direction of the slope of the partition plate 16, but in this case as well, the fluidity is improved due to the thin film of the non-adhesive film 19 applied to the surface of the partition plate 16. It flows more easily in the direction of the slope. Since the drain 18 is provided in the direction of the inclination of the partition plate, the collected lubricating oil is effectively discharged to the outside of the heat exchange device 1 through the drain 18.

As described above, according to this embodiment, as a result of coating the thin film of the non-adhesive film 19 on the upper surface of the partition plate 16 and the surface of the upper fin 16b, the fluidity of the lubricating oil that adheres to it is improved, and the second
The lubricating oil adhering to the upper fins 16b in the space 1o can be effectively flowed downward, and the lubricating oil that has flowed down to the partition plate 15 can be effectively made to flow in the direction of the inclination.
The effect of discharging heat to the outside without accumulating it in the heat exchange device 4 is increased compared to the first embodiment.

It is also possible to reduce the inclination angle of the partition plate 16 compared to the first embodiment, and in this case, the external dimensions of the heat exchange device 4 can be reduced. Also, the lubricating oil is used in the heat exchanger 4.
It is possible to prevent the deterioration of the heat exchange performance of the fins 16 due to residual accumulation inside the fins and the adverse effect on the control function caused by contamination entering the control panel 1.

Effects of the Invention As described above, the present invention provides an inclination to the partition plate inside the heat exchange device, provides a drain below the inclination, and coats a thin film of non-adhesive film on the upper part of the fins and the upper part of the partition plate. By the surface of the fin.

Since lubricating oil does not accumulate on the partition plate, the heat exchange performance of the fins is maintained without deterioration.

Furthermore, since lubricating oil does not accumulate within the heat exchange device, problems such as lubricating oil flowing into the control panel when accumulated and having an adverse effect on the control function of the machine tool are solved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the heat exchange device according to the first embodiment of the present invention when it is incorporated into a control panel of a machine tool, etc., and Fig. 2 is an m-m'o sectional view of the heat exchange device of Fig. 1. , Figure 3 is the second
Figure 4 is an assembled perspective view of the partition plate and fins, Figure 4 is a sectional view when the heat exchange device according to the second embodiment of the present invention is installed in a control panel of a machine tool, etc., Figure 6 is the same as Figure 4. A cross-sectional view of IV-Tl/' of the heat exchange device, Fig. 6 is an assembled perspective view of the partition plate and fins in Fig. 6, and Fig. 7 shows a conventional heat exchange device installed in a control panel of a machine tool, etc. 8 is a sectional view of the heat exchanger nn' of FIG. 7, and FIG. 9 is an assembled perspective view of the partition plate and fins of FIG. 8. 1...Control panel, 4...Heat exchange device, 9
...First space, 1o...Second space, 1
6...Partition plate, 16a...Lower fin, 16b...Upper fin, 18...Drain, 19...Non-adhesive film . Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure claw h≧-1A Figure 4

Claims (2)

[Claims] (1) A heat exchange device for a control panel in which a first space and a second space are formed by a partition plate having an upper fin and a lower fin, in which the partition plate is sloped and a drain is provided below the slope. A heat exchange device characterized by: (2) The heat exchange device according to claim 1, characterized in that a thin film of a non-adhesive film is applied to the upper fins and the upper part of the partition plate.