JP5139370B2 - control panel - Google Patents

Description

  The present invention relates to a control panel for controlling a cooling airflow in a panel, in which outside air is pushed in and blown by a cooling ventilation fan applied to a self-standing panel such as a control panel.

  There are natural ventilation and forced ventilation as a method for cooling the equipment in the control panel, and forced ventilation is generally applied to free standing panels except for wall hangings. In addition, panel coolers and ventilation fans are used for forced ventilation. In the case of a ventilation fan, focusing on how it is used, there are a method of sucking out air in the panel for exhaust and a method of pushing outside air into the panel, and an intake fan is common.

  In the case of measures against dust and corrosive gases (heavier than air), and when the airtightness can be handled by a ventilation fan, it is effective to push outside air into the panel. That is, by applying wind pressure with the pushing fan, it is possible to prevent inflow of outside air containing corrosive gas and dust from the gap, and corrosion inside the panel can be prevented. However, the airflow in the panel is not taken into consideration, and the actual situation is that the panel is not sufficiently cooled.

  Conventionally, Patent Document 1 is shown as an improvement in the cooling effect of this type of in-board equipment. In Document 1, when the cooling wind is introduced into the wind tunnel and the cooling air flowing through the wind tunnel is less than a certain amount, the cooling air is flowed toward an electric device having a large heat generation amount. A configuration is shown in which cooling air is distributed to both an electric device having a large heat generation and an electric device having a small calorific value.

Japanese Utility Model Publication No. 5-76092

  However, in the configuration of Patent Document 1, the internal electrical device is disposed in the duct, and all the cooling air pushed from the outside is supplied to the internal electrical device through the duct, so the configuration is complicated and expensive. In the control panel, the front door is opened to operate or maintain the electrical equipment in the panel. However, since the duct surrounding the equipment becomes an obstacle, the maintenance operability may be extremely deteriorated.

  In view of the above-described conventional drawbacks, the present invention provides a control panel that can perform effective cooling with a simple configuration without impairing the maintainability of internal electrical equipment.

In the present invention, based on the above problems, in the control panel that cools the equipment in the panel by pushing outside air into the casing by the ventilation fan,
An intake fan provided on the back plate of the casing;
The inner frame is fixed on the front surface and the back surface is erected along the casing back plate, and an inner frame having a gap on the bottom side,
It is provided with a wind direction adjusting device that is arranged at the bottom of the casing and changes the direction of the cooling air sucked by the intake fan and sent through the gap at the bottom of the inner frame in the direction in which the in-panel device is arranged. To do.

  Further, in the control panel described above, the wind direction adjusting device is arranged at the bottom of the casing so that the position of the wind direction adjusting device can be changed in accordance with the wind force of the cooling air sent through the gap at the bottom of the inner frame. It is characterized by.

  Further, in the control panel described above, the wind direction adjusting device is arranged so that the position of the wind direction adjusting device can be changed at the bottom of the casing so as to change the position where the direction changes depending on the installation location of the internal wiring of the casing.

  In the control panel described above, the wind direction adjusting device has an adjusting plate portion that changes a direction change angle according to the wind force of the cooling air sent through the gap at the bottom of the inner frame.

  Further, in the control panel described above, the wind direction adjusting device includes a partition plate that captures cooling air sent through a gap at the bottom of the inner frame.

  In the control panel described above, the wind direction adjusting device includes an extendable guide plate for guiding the cooling air sent through the gap at the bottom of the inner frame in different directions.

  In the control panel described above, the airflow direction adjusting device has a slit for letting back a part of the cooling air sent through the gap at the bottom of the inner frame.

  According to the present invention, air can be guided by the wind direction adjusting device and concentrated on the device of the heat generation source, so that it can be efficiently cooled. In addition, unlike the case where the air ducts are individually routed, the simple structure of only installing this device makes it easy to change the installation, and it is also possible to cope with changes in equipment arrangement such as remodeling. In addition, it can be widely applied to existing boards.

It is control board explanatory drawing of this invention Example. It is a perspective view of the same wind direction adjusting device. It is a perspective view of other wind direction adjusting devices similarly. Similarly, it is a perspective view of another wind direction adjusting device. It is explanatory drawing of the wraparound of a wind direction adjustment apparatus similarly. It is explanatory drawing of the flow of the wind of a wind direction adjustment apparatus similarly.

  Embodiments of the present invention will be described below with reference to the drawings.

  1-6 is explanatory drawing of the Example of this invention. FIG. 1 shows a self-supporting control panel as an embodiment of the present invention, (a) is a side view, (b) is a rear view, and FIGS. 2, 3, and 4 are inside the panel of FIG. FIG. 5 and FIG. 6 are explanatory views of the flow of cooling air. The control panel may be a control panel fixed to a wall other than the self-standing type.

  In FIG. 1, 1 is a casing which is a control panel body, 1a is a front door of the control panel, 1b is a back panel of the control panel, 1c is a bottom panel (bottom part) of the control panel, and 3 is provided on a back panel 1b of the casing. The intake fan 4 is a filter that exhausts cooling air to the outside, and is provided on the ceiling plate of the casing. Reference numeral 2 denotes an inner frame in which the in-panel device 7 is fixed on the front surface, and the back surface thereof is erected along the back plate in a state of being separated from the casing back plate, and a gap 2a is formed between the bottom side and the control panel bottom plate 1c. Have. Here, the on-board equipment 7 is an inverter for control, a circuit breaker for wiring, an electromagnetic contactor or the like.

  5 and 6 are arranged on the casing bottom 1c, and the direction of the cooling air sucked by the intake fan and sent through the gap 2a at the bottom of the inner frame is changed in the upward direction where the on-board device 7 is arranged. It is an adjusting plate (wind direction adjusting device). As shown in FIG. 2, the adjustment plate 5 includes a bottom plate 5a, a back plate 5b formed by bending the plate material, and a support plate 5c that supports the back surface of the back plate, and has a slit 10 in a part of the back plate 5b. doing. The back plate 5b is curved so that the wind resistance is not increased by reducing the wind resistance. The slit 10 prevents a part of the cooling air from flowing behind and a negative pressure behind the cooling air so that the cooling air whose direction has been changed upward is not circulated. The adjusting plate 5 is attached to the bottom plate 1c of the control panel by a magnet type having a magnet fixed to the back surface of the bottom plate 5a or a screw or the like so that the adjustment plate 5 can be attached to and detached from the bottom plate 1c of the control panel as the casing bottom part. In addition, since the said adjustment board 5 can be attached or detached, it can attach to the back of the front door 1c, and can also change a wind direction.

  As shown in FIG. 3, the adjustment plate 6 includes a bottom plate 6 a, an adjustment plate portion 8 erected on the bottom plate 6 a so that the angle is variable, and a plurality of partition plates 9 provided on the adjustment plate portion 8. The adjusting plate 6 can change the wind direction by reducing the resistance by an angled plate while blocking air flow. The partition plate 9 captures the wind, thereby ensuring the effect of changing the wind direction. Further, as shown in FIG. 4, a guide plate portion 6b may be attached so that the adjustment plate portion 8 of the adjustment plate 6 extends in a sliding manner, and by adjusting the length, it is possible to cope with the strength of wind power. . Further, as shown in FIG. 5, similarly to the adjustment plate 5, a slit 10 is provided in the adjustment plate portion 8 so that the back side of the adjustment plate 6 becomes a negative pressure and a backflow of airflow (shown by a broken line) does not occur. The rear side is also structured to release airflow. The adjusting plate 6 is also attached to the bottom plate 1c of the control panel with a magnet type or a screw or the like in which a magnet is fixed to the back surface of the bottom plate 6a so that the adjustment plate 6 can be attached to and detached from the bottom plate 1c of the control panel serving as the casing bottom part. In addition, since the said adjustment board 6 can be attached or detached, it can also attach to the back of the front door 1c, and can change a wind direction.

  In the above configuration, the cooling air taken in from the intake fan 3 passes through the air path constituted by the inner frame 2 and the back plate 1b and is blown out from the gap 2a between the bottom of the inner frame 2 and the control panel bottom plate 1c. When the blown air volume is small and the wind pressure is weak, the direction of the cooling air is changed by the gap 2a by the adjusting plate 5 installed in the gap 2a to positively create the natural convection of the cooling air rising upward, It can be applied to the device 7. Further, even when there is a power supply line or a signal line rising near the center of the bottom of the panel and the cooling air from the gap 2a does not flow to the front door 1a side of the panel, the adjustment plate 5 changes the direction of the cooling air at the gap 2a. Can be.

  It blows out from the gap 2a. When the blown air volume is small and the wind pressure is weak, the direction of the cooling air is changed by the gap 2a by the adjusting plate 5 installed in the gap 2a to positively create the natural convection of the cooling air rising upward, It can be applied to the device 7. Further, even when there is a power supply line or a signal line rising near the center of the bottom of the panel and the cooling air from the gap 2a cannot flow to the front door 1a side of the panel, the adjustment plate 5 changes the direction of the cooling air at the gap 2a. Can be.

  When there is a large amount of cold air blown out from the gap 2a and there is no wind pressure, and there are no power lines or signal lines rising from the bottom of the panel, the direction of the cooling air is changed by the adjusting plate 6 installed on the front door 1a side. Like that. In this way, the adjustment plate 6 installed on the front door 1a side away from the gap 2a can be applied to the front and bottom surfaces of the in-board equipment obliquely from the lower side to the in-board equipment 7, thereby improving the cooling efficiency. Further, by extending the guide plate 6b provided on the adjustment plate 6 upward, the direction of the cold air after changing the direction can be improved, and the cool air can be efficiently applied to the in-board equipment 7 to be cooled. it can.

  The direction change of the cool air at the adjusting plate 6 is somewhat different depending on the wind pressure of the cool air. That is, as shown in FIG. 6, when there is a large amount of blown air from the gap 2a, it flows in the direction along the angle C of the adjusting plate 8 as shown by A, and when the blown air amount is small and the wind pressure is weak. After flowing along the adjustment plate portion 8 as shown by B, it flows in the direction of rising vertically.

  Furthermore, since there is no dust or corrosive gas in a maintained environment such as a clean room, cold air may be sucked from the bottom of the panel or the back plate 1b near the bottom (not shown). However, the air direction of the sucked cold air can be controlled by the adjusting plate 2. That is, since the adjustment plate can be easily attached and removed by a magnet type or the like, the number of attachments and the attachment position can be changed. Unlike a fixed object such as a conventional duct, it is excellent in handling and operability. As described above, although there is a difference in effect depending on the strength of the air volume in the panel, constant cooling can always be expected.

  In the said structure, since it can concentrate on the apparatus of a heat-generation source by guiding ventilation with a wind direction adjustment apparatus, it becomes possible to cool efficiently. Also, unlike the case where the air ducts are individually routed, the wind direction adjustment device has a simple structure, so the installation can be easily changed, and it is possible to change the equipment layout such as remodeling. it can. Further, when operating or maintaining the on-board equipment 7 by opening the front door 1a, it is not surrounded by a duct as in the prior art, and the on-board equipment 7 is installed in the inner frame 2 in an open state. Serviceability is not impaired.

  DESCRIPTION OF SYMBOLS 1 ... Control board main body (casing), 1b ... Casing back plate, 1c ... Bottom plate (bottom part), 2 ... Inner frame, 2a ... Clearance, 3 ... Intake fan, 4 ... Filter, 5, 6 ... Adjustment plate (wind direction adjusting device) ), 6b ... Guide plate, 7 ... In-board device, 8 ... Adjustment plate part, 9 ... Partition plate, 10 ... Slit.

Claims (7)

In a control panel that cools equipment in the panel by pushing outside air into the casing with a ventilation fan,
An intake fan provided on the back plate of the casing;
The inner frame is fixed on the front surface and the back surface is erected along the casing back plate, and an inner frame having a gap on the bottom side,
It is provided with a wind direction adjusting device that is arranged at the bottom of the casing and changes the direction of the cooling air sucked by the intake fan and sent through the gap at the bottom of the inner frame in the upward direction where the in-panel device is arranged. Control panel.   2. The control panel according to claim 1, wherein the wind direction adjusting device is disposed at a bottom portion of the casing so that the position of the wind direction adjusting device can be changed according to the wind force of the cooling air sent through the gap at the bottom of the inner frame. Control panel characterized by   2. The control panel according to claim 1, wherein the wind direction adjusting device is arranged so that the position of the wind direction adjusting device can be changed at the bottom of the casing so as to change the position of changing the direction according to the installation location of the internal wiring of the casing. Board.   The control panel according to any one of claims 1 to 3, wherein the wind direction adjusting device includes an adjusting plate portion that changes a direction change angle in accordance with wind force of cooling air sent through a gap at the bottom of the inner frame. Control panel.   5. The control panel according to claim 1, wherein the wind direction adjusting device includes a partition plate that captures cooling air sent through a gap at the bottom of the inner frame.   6. The control panel according to claim 1, wherein the wind direction adjusting device has an extendable guide plate for guiding the cooling air sent through the gap at the bottom of the inner frame in different directions. Control panel.   The control panel according to any one of claims 1 to 6, wherein the airflow direction adjusting device has a slit for letting back a part of the cooling air sent through the gap at the bottom of the inner frame.

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