JP4766601B2 - Temperature controller for ventilation fan - Google Patents

Description

  The present invention relates to a temperature controller for controlling a plurality of ventilation fans installed in a cabinet for storing electrical and electronic equipment such as a distribution board and a distribution board.

  Usually, a plurality of ventilation fans are provided in a cabinet of an electrical / electronic equipment storage cabinet in order to suppress an increase in temperature inside the cabinet due to heat generated by the internal equipment. As shown in Patent Document 1, a temperature controller having a temperature sensor is attached inside each ventilation fan, and on / off control is performed to turn on the ventilation fan when the ambient temperature reaches a set temperature. It was broken.

Since each temperature controller is provided with a temperature setting part, the temperature setting for each ventilation fan is possible. However, each ventilator is controlled on and off independently of the other ventilators, so it is difficult to efficiently ventilate the entire enclosure, and in order to control on and off existing ventilators that are not equipped with temperature controllers, There is a problem that it is necessary to replace with a temperature controller, which increases the cost.
Japanese Utility Model Publication No. 5-59173

  The present invention solves the above-mentioned conventional problems, and controls a plurality of ventilation fans in a coordinated manner, thereby enabling efficient ventilation of the entire housing, and a ventilation fan not equipped with an existing temperature controller It is an object of the present invention to provide a temperature controller for a ventilation fan that can be controlled on and off by attaching and connecting a temperature controller to the ventilation fan when on / off control is required.

The present invention made to solve the above problems is a temperature controller for controlling a plurality of ventilation fans installed in a housing, and has a structure in which a case containing a temperature control board can be attached to the outside of the ventilation fan. And two sets of output terminals for controlling on / off of a plurality of ventilation fans, one output terminal is connected to a power supply line of the ventilation fan to which the temperature controller is attached, and the other output terminal is a temperature controller of another ventilation fan. The power supply line is connected, and when a set temperature is reached, the temperature controller of another ventilation fan is sequentially fed .

In addition, it is preferable that the case is detachable from the outer casing of the ventilation fan. In this case, the case is fixed to the outer casing of the ventilation fan by a front plate portion and a tightening movable member that can be operated by a screw. it can.

  According to the present invention, since the plurality of ventilation fans can be controlled to be turned on and off by the temperature controller for the ventilation fan attached to the outside of the ventilation fan, efficient ventilation of the entire housing can be performed by controlling the plurality of ventilation fans in cooperation. Is possible. In addition, since the case that houses the temperature control board is designed to be attached to the outside of the ventilation fan, it is possible to perform on / off control even for a ventilation fan that does not have a temperature controller. Since there is no need to replace it with the one provided, there is an advantage that the cost can be reduced and the entire housing can be efficiently ventilated.

Preferred embodiments of the present invention are shown below.
FIG. 1 is a diagram showing an electrical / electronic equipment storage cabinet in which three ventilation fans 2 are arranged on the top of a housing 1. In this embodiment, a temperature controller 3 for a ventilation fan is attached to each of the three ventilation fans 2 .

2-4 is a figure which shows the external appearance of the temperature regulator 3 for ventilation fans attached to the outline of the ventilation fan 2. FIG. As shown in the figure, the case 5 of the temperature controller 3 for the ventilation fan includes a front plate 6 projecting downward from the front left and right. The front plate 6 is attached to the front surface of the outer shell 7 of the ventilation fan 2. Arranged. In addition, a tightening movable body 9 that can be moved back and forth by a screw 8 is provided on the back surface of the front plate 6. By sandwiching the outer edge of the ventilation fan 2 between the front plate 6 and the tightening movable body 9, The case 5 can be fixed to the upper part of the outer shell 7 of the ventilation fan 2. The screw 8 is penetrated by a protruding portion 10 having a U-shaped cross section that is formed to project from the left and right sides of the case 5 so that it can be rotated from the front. The portion of the screw holes 11 for attaching the ventilation fan 2 in the housing 1 is assumed to be cut out as the front plate 6 and tightening the movable member 9 does not overlap.

A temperature control board 12 as shown in FIG. 5 is accommodated in the case 5. A dial-type temperature setting unit 13 is provided at the center, and a small and highly accurate temperature setting is possible by making the 10th setting unit and the 1st setting unit independent. However, since the high temperature portion of the 10th setting portion is not used, if the high temperature portion does not appear from the window portion when it is installed in the case 5, there is no risk that the setting temperature will be set to a high temperature by mistake. Is.

  As shown in FIG. 3, a power input terminal 14 and a temperature sensor terminal 15 are provided on one side surface of the case 5. A plug-type temperature sensor 16 as shown in FIGS. 10 and 11 can be inserted into the temperature sensor terminal 15. The length of the temperature sensor 16 can be changed, and the temperature measurement position can be freely set.

A plurality of output terminals 17 are provided on the opposite side surface of the case 5. In this example, two sets of output terminals 17 are provided, one of which is connected to the power supply line of the ventilation fan 2 to which the temperature controller 3 for the ventilation fan is attached, and the other is connected to the power supply line of the other ventilation fan 2 by the connection wiring 4. It is connected.

In the above-described embodiment , the temperature controller 3 for the ventilation fan is attached to the outer shell 7 of the ventilation fan 2, but as shown in FIGS. 6 and 7 , a hook portion for attaching to the IEC rail of the housing 1 on the bottom surface of the case 5. 18 may be provided so as to be directly fixed to the IEC rail . Further, leg portions 19 for directly attaching the board surface are provided on both sides of the bottom surface of the case 5 so as to be attached to the board surface. In this case, the protruding amount of the hooking portion 18 is set lower than that of the leg portion 19 so that the hooking portion 18 does not hit when the panel surface is directly attached.

When the temperature controller 3 for the ventilation fan 2 is attached to the outer shell 7 of the ventilation fan 2 as in the embodiment, the dial type temperature setting unit 13 can be operated from the front side of the ventilation fan 2 on the side surface of the case 5. The temperature setting unit 13 was faced. However, in FIGS. 6 and 7 , the temperature controller 3 for the ventilation fan is attached to the IEC rail of the housing 1 that is the outside of the ventilation fan 2, so that the dial type temperature setting unit 13 faces the upper surface of the case 5 and It can be operated.

Thus, since the installation position of the dial type temperature setting unit 13 differs depending on the attachment position of the temperature controller 3, two types of cases 5 need to be manufactured. However, as shown in FIGS. 8 and 9, the case 5 is divided into two types, the operation surface case 20 and the temperature control board 12 are common, and only two types of the main body case 21 are manufactured and combined. Cost can be reduced. 10 and 11 show a state in which the temperature sensor 16 is attached to the temperature controller 3 for the ventilation fan shown in FIGS. 6 and 7, but the same applies to the embodiment .

In the embodiment of the present invention shown in FIG. 1, a temperature controller 3 for a ventilation fan is attached to each of the three ventilation fans 2. The temperature controller 3 for each ventilation fan has two sets of output terminals 17 on the right side, one is connected to the power line of the ventilation fan 2 to which the temperature controller 3 for the ventilation fan is attached, and the other is connected to the other by the connection wiring 4. It is connected to the power input terminal 14 of the temperature controller 3 for the ventilation fan to which the ventilation fan 2 is attached. A temperature sensor 16 is attached to the temperature controller 3 for each ventilation fan. In FIG. 1 , the temperature sensor 16 is provided separately from the temperature controller 3, but may be integrated into the temperature controller 3.

In this embodiment , the set temperature is sequentially increased from left to right, for example, 30 ° C., 35 ° C., and 40 ° C. For this reason, when the internal temperature of the housing 1 exceeds 30 ° C., the left ventilation fan 2 is driven, and at the same time, power is supplied to the temperature controller 3 for the ventilation fan of the central ventilation fan 2. The central ventilation fan 2 receives power and starts temperature monitoring. When the temperature reaches 35 ° C., which is the set temperature, the central ventilation fan 2 starts driving and supplies power to the temperature controller 3 for the right ventilation fan 2. . The left ventilation fan 2 receives power and starts temperature monitoring, and starts driving when the set temperature reaches 40 ° C.

In this embodiment, since it is only necessary to perform temperature monitoring with only the temperature controller 3 for a single ventilation fan in a low temperature state, rather than always performing temperature monitoring with the temperature controllers 3 for all ventilation fans, Electric power can be reduced. Moreover, there is an advantage that the temperature can be monitored at a plurality of locations.

  As described above, according to the present invention, by efficiently controlling a plurality of ventilation fans, the entire housing can be efficiently ventilated. It is suitable.

1 is an overall view showing an embodiment of the present invention . It is an external appearance perspective view of the temperature controller for ventilation fans in embodiment . It is the external appearance perspective view seen from the other side. It is an expansion perspective view of an attachment part. It is a perspective view of a temperature control board. It is an external appearance perspective view of the temperature controller for ventilation fans in other reference forms . It is the external appearance perspective view reversed up and down. It is a disassembled perspective view of a case . It is a disassembled perspective view of a case . It is an external appearance perspective view which shows the mounting state of a temperature sensor. It is the external appearance perspective view seen from the other side.

DESCRIPTION OF SYMBOLS 1 Housing 2 Ventilation fan 3 Ventilation fan temperature controller 4 Connection wiring 5 Case 6 Front plate 7 Ventilation fan outer shell 8 Screw 9 Tightening movable body 10 Protruding part 11 Screw hole 12 Temperature control board 13 Dial type temperature setting part 14 Power input terminal 15 Temperature sensor terminal 16 Temperature sensor 17 Output terminal 18 Hook 19 Leg 20 Operation surface case 21 Body case

Claims (3)

A temperature controller that controls a plurality of ventilation fans installed in the enclosure, and has a structure in which a case containing a temperature control board can be attached to the outside of the ventilation fan, and two sets of output terminals that control on / off of the plurality of ventilation fans When one of the output terminals is connected to the power line of the ventilation fan with the temperature controller attached, and the other output terminal is connected to the power line of the temperature controller of the other ventilation fan, when the set temperature is reached A temperature controller for a ventilating fan, characterized in that it is configured to sequentially feed power to the temperature controller of another ventilator . The temperature controller for a ventilation fan according to claim 1, wherein the case is detachable from an outer shell of the ventilation fan. The temperature controller for a ventilation fan according to claim 2, wherein the case is fixed to the outer wall of the ventilation fan by a front plate portion and a tightening movable member that can be operated by a screw.

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