JPH0611292A - Heat exchanging device - Google Patents

Abstract

PURPOSE:To provide an excellent maintenance work with respect to the heat exchanging device installed on a control board for a machine tool, etc., to cool air inside the control board by a method wherein the heat exchanging device is provided with a filter to eliminate the need for cleaning its interior, even in a case where the machine tool is used in an atmosphere of dusts such. as chips produced in a large amount during the machine tool operation. CONSTITUTION:In a heat-exchanger 14 provided with a plurality of heat transfer fins 7 arranged in a cabinet 15 at predetermined intervals, a first passage for inner air flow formed through the heat transfer fins 7, a second passage for outer air flow formed therethrough and an outside air blower 11, the cabinet 15 is provided on the outside air inlet side with a notch 16 from which a filter 17 is suspended.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange device arranged on a control panel of a machine tool or the like for cooling air in the control panel.

[0002]

2. Description of the Related Art At present, machine tools are used in a large amount of dust such as cutting powder, and the atmosphere around a control panel is getting worse. Therefore, there has been a demand for the development of a heat exchange device which is excellent in maintainability and copes with the deterioration of the atmosphere. For example, the configuration disclosed in Japanese Patent Laid-Open No. 62-9188 has been common.

The conventional heat exchange apparatus described above will be described below with reference to the drawings with reference to FIGS. 7 to 10.

FIG. 7 is a perspective view of a main part of a control panel on which a conventional heat exchange device is mounted, and FIG. 8 is a sectional view of FIG. 7 showing the flow of air. 9 is a cross-sectional view of the main part of the heat exchange device of FIG. 7 cut in the depth direction of the control panel, and FIG. 10 is a perspective view of a heat transfer fan incorporated in the conventional heat exchange device.

In the figure, reference numeral 1 is a control panel, on the top surface of which a suction port 2 and a discharge port 3 for inside air are provided. A blower 4 for inside air is attached to the discharge port 3. A heat exchanger 5 is attached to the top surface of the control panel 1. Reference numeral 6 denotes a cabinet of the heat exchange device 5, and 7 denotes heat transfer fins having a hollow columnar shape, and a plurality of the heat exchange fins are arranged inside the cabinet 6 at predetermined intervals. Further, the space formed between the adjacent heat transfer fins 7 is closed at both ends by partition plates 8a and 8b. The air in the control panel 1 is blown into the space through the suction port 2 and discharged from the discharge port 3 to form a first air passage 9.

Therefore, the air in the control panel 1 is sucked by the inside air blower 4 from the suction port 2, passes through the first air passage 9 formed between the adjacent heat transfer fins 7, and is discharged from the control port 3 to the control panel. The structure is such that the liquid is discharged into the inside.

Reference numeral 10 is a discharge port provided in the cabinet 6. An air blower 11 is attached to the discharge port 10 side. On the other hand, the suction port 1 is provided on the opposite surface of the discharge port 10.
0a is formed. The outside air sucked by the outside air blower 11 passes through the columnar hollow space of the heat transfer fins 7 to form the second air passage 12 discharged from the discharge port 10 provided in the cabinet 6. A space 1 is provided between the outside air blower 11 and the heat transfer fins 7 and the partition plate 8a so that the outside air can uniformly pass through the respective second air passages 12.
3 is provided.

In the above structure, the inside air containing the heat generated inside the control panel 1 flows through the first air passage 9 and exchanges heat with the outside air flowing through the second air passage 12 through the heat transfer fins 7. As a result, the inside air flowing through the first air passage 9 is cooled.

[0009]

However, in the above-mentioned configuration, dust such as cutting powder generated during machining of the machine tool enters the heat exchange device 5 together with the outside air into the heat transfer fins 7 by the outside air blower 11. It adhered and remarkably deteriorated the heat exchange performance.

Further, not only was it attached to the blower 11 for the outside air to cause a trouble in rotation, but it was also accumulated in the heat exchange device 5.

Therefore, the heat transfer fins 7 and the blower 11 for the outside air
Cleaning was required to remove the dust adhering to and the dust accumulated in the heat exchange device 5, and the maintenance was difficult.

The present invention solves the above-mentioned conventional problems, and has excellent maintainability without deteriorating the heat exchange performance even in an atmosphere where a large amount of dust such as cutting powder generated during machining of a machine tool is generated. An object is to provide a heat exchange device.

[0013]

In order to solve the above problems, the heat exchange device of the present invention has a control panel provided with a suction port and a discharge port having an inside air blower on the top surface, and the inside air blower. A first air passage communicating with the inside air via a second air passage formed in a plurality of heat transfer fins and communicating with the outside air via an outside air blower, and the heat transfer fin and the outside air blower are housed. It is composed of a cabinet and a filter is suspended in a notch provided on the outside air intake side of the cabinet.

Further, in order to solve the above-mentioned problems, the heat exchange device of the present invention is provided with an alarm limit switch inside the filter suspended in the notch provided in the cabinet.

[0015]

The heat exchange device of the present invention has the above-described structure, and even if the heat exchanging device is used in an atmosphere where a large amount of dust such as cutting powder generated during machining of a machine tool is generated, the dust is provided on the outside air suction side of the cabinet and has a cutout portion. It adheres to the filter suspended in and does not enter the heat exchange device.

Further, in the heat exchange apparatus of the present invention, when a large amount of dust adheres to the filter, an alarm is issued by the alarm limit switch provided inside the filter.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a heat exchange device according to the first embodiment of the present invention mounted on a control panel, and FIG. 2 is shown in FIG.
FIG. 3 is a vertical sectional view of FIG. 3, and FIG. 3 is a sectional view showing an air passage.

1 to 3, the same components as those of the conventional one are designated by the same reference numerals and detailed description thereof will be omitted.
A heat exchanger 14 is attached to the top surface of the control panel 1. Reference numeral 15 denotes a cabinet of the heat exchange device 14, which is provided with a cutout portion 16 on the suction side of the outside air. A filter 17 is suspended in the notch 16 of the cabinet 15.

With the above-mentioned structure, even when used in an atmosphere where a large amount of dust such as cutting powder produced during machining of a machine tool is generated, the dust is suspended in the notch 16 provided on the outside air intake side of the cabinet 15. It adheres to the filter 17 and does not enter the heat exchange device 14.

Since so-called heat transfer fins 7 do not adhere to dust, heat exchange performance is not deteriorated.

Further, since it does not adhere to the blower 11 for the outside air, it does not hinder the rotation and dust does not accumulate in the heat exchange device 14.

Therefore, the heat transfer fins 7 and the blower 11 for the outside air
This eliminates the need for cleaning and maintenance inside the heat exchanger 14.

Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a perspective view of the heat exchange device according to the second embodiment of the present invention mounted on a control panel, FIG. 5 is a sectional view of FIG. 4, and FIG. 6 is a sectional view showing an air passage.

4 to 5, the same components as those of the conventional one are designated by the same reference numerals and detailed description thereof will be omitted.
A heat exchanger 18 is attached to the top surface of the control panel 1. Reference numeral 15 is a cabinet of the heat exchange device 18, which is provided with a cutout portion 16 on the suction side of the outside air. A filter 17 is suspended from a notch 16 provided on the outside air intake side of the cabinet 15. Reference numeral 19 denotes an alarm limit switch, which is attached to the side surface of the cabinet 15 and is located in the lower portion inside the filter 17.

Therefore, even if the dust is used in an environment where a large amount of dust such as cutting powder generated during machining of a machine tool is generated, the dust is suspended in the notch portion 16 provided on the outside air intake side of the cabinet 15 by the filter 17. Attached to the heat exchange device 18
It doesn't go inside.

Since so-called dust is not attached to the so-called heat transfer fins 7, the heat exchange performance is not deteriorated.

Further, since it does not adhere to the blower 11 for the outside air, it does not hinder the rotation and dust is not accumulated in the heat exchange device 18.

Therefore, the heat transfer fins 7 and the outside air blower 11
This eliminates the need for cleaning or maintenance inside the heat exchange device 18.

When a large amount of dust adheres to the filter 17, the filter 17 is pushed inward by the wind pressure of the outside air blower 11, the alarm limit switch 19 is activated, and an alarm lamp (not shown) is used. Give an alarm. As a result, only the filter 17 needs to be cleaned.

[0031]

As described above, the heat exchange device of the present invention has the following effects.

By suspending the filter in the notch of the cabinet, even if the filter is used in an atmosphere where a large amount of dust such as cutting powder generated during machining of a machine tool is generated, the dust does not enter the heat exchange device. The dust does not adhere to the heat transfer fins or the outside air blower, and the dust does not accumulate in the heat exchange device.

Therefore, the heat exchange performance is maintained and the blower for outside air is not hindered. Further, in the heat exchange device of the present invention, by providing an alarm limit switch inside the filter, when a large amount of dust adheres to the filter, the alarm limit switch is activated to give an alarm, Only the cleaning should be done.

[Brief description of drawings]

FIG. 1 is a perspective view of essential parts of a heat exchange device and a control panel according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view of FIG.

FIG. 3 is a cross-sectional view of essential parts showing an air passage of the heat exchange device of FIG.

FIG. 4 is a perspective view of a heat exchange device and a control panel according to another embodiment.

FIG. 5 is a fourth vertical sectional view.

FIG. 6 is a cross-sectional view of essential parts showing an air passage of the heat exchange device of FIG.

FIG. 7 is a perspective view of a heat exchange device and a control panel showing a conventional example.

FIG. 8 is a vertical sectional view of FIG.

9 is a cross-sectional view of main parts showing an air passage of the heat exchange device of FIG.

FIG. 10 is a perspective view of a heat transfer fin of a heat exchange device showing a conventional example.

[Explanation of symbols]

 1 Control Panel 2 Suction Port 3, 10 Discharge Port 4 Inside Air Blower 7 Heat Transfer Fin 9 First Air Passage 11 Outside Air Blower 12 Second Air Passage 14, 18 Heat Exchanger 15 Cabinet 16 Notch 17 Filter 19 Alarm Limit switch

Claims (2)

[Claims] 1. A control panel having a suction port and a discharge port having an inside air blower on the top surface, a first air passage communicating with the inside air through the inside air blower, and a plurality of heat transfer fins inside the heat transfer fins. A second air passage that is formed and communicates with the outside air through an outside air blower, and a cabinet that houses the heat transfer fins and the outside air blower, and a filter is suspended in a notch provided in the cabinet. And heat exchange equipment. 2. The heat exchange device according to claim 1, wherein an alarm limit switch is provided inside the filter suspended in the notch provided in the cabinet.