JP2001341962A - Radiator for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain sufficient heat radiating efficiency without supplying electric power from outside. SOLUTION: A fan device 18 for cooling a circuit board 15 mounted on a car 11 is arranged in the car 11, and rotation of a roller guide 14 is mechanically transmitted to the fan device 18 by a rotation transmitting mechanism 19, and when lifting the car 11, the fan device 18 is rotated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator radiator for promoting heat radiation of a circuit board such as a control device mounted on a car.

[0002]

2. Description of the Related Art FIG. 9 is a block diagram showing a conventional radiator disclosed in, for example, JP-A-4-71369. In the figure, a load 1 is connected to a commercial power supply 3 via an inverter unit 2.
It is connected to the. The inverter unit 2 includes a converter unit 4 for converting an input AC from the commercial power supply 3 into a DC, a smoothing capacitor 5 for smoothing the converted DC, and a load 1 for converting the smoothed DC into an AC having a variable voltage and a variable frequency. And a power transistor 6 for supplying the power transistor 6 to

[0003] The power transistor 6 is driven by a base amplifier 7. The inverter unit 2 includes a cooling fan 8
Cooling. Base amplifier 7 and cooling fan 8
Is controlled by the control circuit 9. The temperature of the inverter unit 2 is detected by a temperature detector 10 connected to the control circuit 9.

In such a heat radiation device, the temperature detector 10
When the temperature of the inverter unit 2 detected at the step (2) is equal to or higher than the set temperature, the cooling fan 8 is operated to cool the inverter unit 2. This prevents the power transistor 6 from being deteriorated or damaged due to heat.

[0005]

In the above-described conventional heat radiating device, forced cooling is performed by using the electric cooling fan 8, so that the cost is increased and noise is generated. On the other hand, only natural cooling using a radiation fin or the like restricts the space or the like of the radiation fin, so that the radiation efficiency is reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator heat radiating device capable of achieving sufficient heat radiation efficiency without supplying power from the outside. The purpose is to gain.

[0007]

According to a first aspect of the present invention, there is provided a heat radiating device for an elevator, wherein the heat radiating device is provided in a car and has a plurality of intake and exhaust ports for taking in traveling wind when the car is raised and lowered and discharging the taken traveling wind. And a ventilation duct for guiding traveling wind to a circuit board mounted on the car.

According to a second aspect of the present invention, there is provided an elevator heat dissipating device provided on a car for cooling a circuit board mounted on the car, and a roller for guiding a rolling cage up and down along a guide rail. A rotation transmitting mechanism for mechanically transmitting the rotation of the guide to the fan device.

According to a third aspect of the present invention, there is provided a heat radiating device for an elevator, comprising: a first rotating body rotated by rotation of a roller guide; a second rotating body transmitting rotation to a fan device; And a circulator for transmitting the rotation of the first rotator to the second rotator.

A heat radiating device for an elevator according to a fourth aspect of the present invention is provided with a ventilation duct provided on a car and for guiding cooling air from a fan device to a circuit board.

A heat radiating device for an elevator according to a fifth aspect of the present invention uses a fan device composed of first and second fans that rotate in opposite directions, and one of the first and second fans has ventilation. When the cooling air is introduced into the duct, the cooling air that has passed through the circuit board is discharged from the ventilation duct by the other of the first and second fans.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. FIG. 1 is a perspective view showing a heat radiator of an elevator according to Embodiment 1 of the present invention, and FIG. 2 is a front view showing the heat radiator of FIG.

In the drawing, a car 11 is provided with a guide rail 1.
2 to be moved up and down in the hoistway 13. A plurality of roller guides 14 that roll along guide rails 12 are mounted on the car 11. A circuit board 15 of a control device for controlling a car-side device such as a door device is mounted on an upper portion of the car 11. The circuit board 15 is provided with radiating fins 16 for promoting heat radiation.

At the top of the car 11, there is provided a ventilation duct 17 for guiding the running wind to the circuit board 15 when the car 11 is moved up and down. The ventilation duct 17 is provided with one upper suction / discharge port 17a and a plurality of lower suction / discharge ports 17b for taking in the traveling wind when the car 11 moves up and down and discharging the taken traveling wind.

In an elevator using such a heat radiating device, when the car 11 rises, traveling wind is taken into the ventilation duct 17 from the upper suction / discharge port 17a, and the circuit board 15 including the heat radiation fins 16 is cooled. Thereafter, the traveling wind is discharged out of the ventilation duct 17 from the lower suction / discharge port 17b. When the car 11 descends, the traveling wind is taken in from the lower suction / discharge port 17b and discharged from the upper suction / discharge port 17a.

As described above, by utilizing the traveling wind, sufficient heat radiation efficiency can be achieved without supplying electric power from the outside, and no noise is generated by the motor. Furthermore, since cooling is performed intermittently only when the car 11 is raised and lowered, overcooling can be prevented and the life of the circuit board 15 can be extended.

Embodiment 2 FIG. Next, FIG. 3 is a perspective view showing a heat radiating device for an elevator according to a second embodiment of the present invention.
FIG. 4 is an enlarged perspective view showing a main part of FIG. Basket 1
A fan device 18 for cooling the circuit board 15 is provided on 1. The fan device 18 is rotated by mechanically transmitting the rotation of the roller guide 14 via a rotation transmission mechanism 19.

The rotation transmitting mechanism 19 includes first and second pulleys 21 and 22 as first and second rotating bodies, a belt 23 as a circulating body wound between these pulleys 21 and 22, a roller It has a first shaft 24 for transmitting the rotation of the guide 14 to the first pulley 21 and a second shaft 25 for transmitting the rotation of the second pulley 22 to the fan device 18.
The second pulley 22 is supported by a support 26 erected on the car 11.
It is rotatably supported by. The illustration of the support structure for other parts is omitted.

In such a heat radiating device, the rotation of the roller guide 14 due to the elevation of the car 11 is transmitted to the fan device 18 via the rotation transmitting mechanism 19. Therefore, when the car 11 moves up and down, the fan device 18 is rotated, and cooling air is sent to the circuit board 15. Therefore, sufficient heat radiation efficiency can be achieved without supplying power from the outside, and no noise is generated by the motor. Further, since cooling is performed intermittently only when the car 11 is raised and lowered, overcooling can be prevented and the life of the circuit board 15 can be extended.

Further, since the rotation transmitting mechanism 19 has the first and second pulleys 21 and 22 and the belt 23, the fan device 18 is disposed at an appropriate position with respect to the position of the circuit board 15. be able to. Furthermore, by appropriately setting the ratio of the diameters of the first and second pulleys 21 and 22, the rotation speed of the fan device 18 can be adjusted.

In the second embodiment, the first and second pulleys 21 and 22 are shown as the first and second rotating bodies and the belt 23 is shown as the circulating body. However, for example, a sprocket and a chain are combined. It can be used or a combination of a pulley and a wire can be used. Further, the rotation transmission mechanism may be a combination of a plurality of gears.

Embodiment 3 FIG. Next, FIG. 5 is a perspective view showing a heat dissipation device for an elevator according to Embodiment 3 of the present invention. In the figure, a ventilation duct 27 for guiding cooling air from a fan device 18 to a circuit board 15 is provided on a car 11. The ventilation duct 27 is provided with a suction / discharge port 27a. Other configurations are the same as those of the second embodiment.

In such a heat radiating device, when the car 11 rises, cooling air is sent from the fan device 18 into the ventilation duct 27 to cool the circuit board 15. The cooled hot air is discharged out of the ventilation duct 27 through the suction / discharge port 27a.
When the car 11 descends, the fan device 18 is rotated in the reverse direction to draw out the cooled hot air from the inside of the ventilation duct 27, and the cooling air flows into the ventilation duct 27 from the suction / discharge port 27 a to cool the circuit board 15. You.

According to such a configuration, the cooling air can be efficiently supplied to the circuit board 15, and the radiation efficiency can be improved.

Embodiment 4 In the third embodiment, the case where the circuit board 15 is provided on the car 11 has been described. For example, as shown in FIG.
5 may be provided below the car 11. In the configuration of FIG.
When the car 11 descends, the ventilation duct 27
Cooling air is sent into the inside, and the warm air after cooling
Is discharged from When the car 11 is raised, the suction and discharge port 27a
The cooling air is introduced from the
Is drawn out of the ventilation duct 27 by the reverse rotation of.

Embodiment 5 Further, by using a heat radiating device having a rotation transmitting mechanism 32 as shown in FIG. 7, for example, the cooling air from the fan device 18 can be sent into the ventilation duct 31 provided on the side surface of the car 11, and the ventilation duct The circuit board 15 in the space 31 can be cooled. The rotation transmission mechanism 32 has a pair of bevel gears 33 and 34. The bevel gears 33 and 34 are supported by columns 35.

Embodiment 6 FIG. Next, FIG. 8 is a plan view showing an elevator heat dissipation device according to Embodiment 6 of the present invention. In the figure, a fan device 28 for sending cooling air to a circuit board 15 is composed of first and second fans 28a and 28b. First and second fans 28a, 28
b is rotated in opposite directions by the rotation of the two roller guides 14 being transmitted through separate rotation transmission mechanisms 19.

On the car 11, a ventilation duct 30 for guiding cooling air from the fan device 28 to the circuit board 15 is provided. FIG. 8 shows the inside of the ventilation duct 30 with the upper surface of the ventilation duct 30 removed. The ventilation duct 30 has the first
And a partition plate 3 for partitioning between the second fans 28a and 28b
0a is provided.

In such a radiator, the first and second fans 28a and 28b are rotated in opposite directions as the car 11 moves up and down. For example, when the car 11 rises,
As shown by the solid arrow in the drawing, the cooling air is sent into the ventilation duct 30 by the first fan 28a, and the cooled hot air is discharged out of the ventilation duct 30 by the second fan 28b. Further, when the car 11 descends, the cooling air flows as indicated by the broken arrow in the figure, contrary to the case where the car 11 rises.

According to such a structure, the cooling air can be efficiently supplied to the circuit board 15 both when the car 11 rises and when the car 11 descends, and the heat radiation efficiency can be improved.

[0031]

As described above, the heat radiating device for an elevator according to the first aspect of the present invention is provided with a ventilation duct for guiding a traveling wind to a circuit board mounted on the car, and the traveling wind is ventilated when the car is raised and lowered. Since the circuit board is taken in the duct and cooled, sufficient heat radiation efficiency can be achieved without supplying electric power from the outside, and no noise is generated by the motor. In addition, since cooling is performed intermittently only when the car is raised and lowered, overcooling can be prevented and the life of the circuit board can be extended.

According to a second aspect of the present invention, there is provided an elevator heat radiator in which a fan device for cooling a circuit board mounted on the car is provided in the car, and the rotation of the roller guide is mechanically transmitted to the fan device by a rotation transmission mechanism. Therefore, sufficient heat radiation efficiency can be achieved without supplying power from the outside, and no noise is generated by the motor. In addition, since cooling is performed intermittently only when the car is raised and lowered, overcooling can be prevented and the life of the circuit board can be extended.

According to a third aspect of the present invention, there is provided an elevator heat radiating device comprising: a first rotating body rotated by rotation of a roller guide; a second rotating body transmitting rotation to a fan device;
And a circulating body wound between the second rotator and transmitting the rotation of the first rotator to the second rotator. Can be provided with a fan device. Also, by appropriately setting the ratio between the diameters of the first and second rotating bodies, the rotation speed of the fan device can be adjusted.

In the elevator heat radiating device according to the fourth aspect of the present invention, the ventilation duct for guiding the cooling air from the fan device to the circuit board is provided in the car, so that the cooling air can be efficiently supplied to the circuit board. Efficiency can be improved.

According to a fifth aspect of the present invention, the heat radiating device for an elevator uses a fan device including first and second fans that rotate in opposite directions, and one of the first and second fans is a ventilation duct. When the cooling air is introduced into the car, the other of the first and second fans discharges the cooling air that has passed through the circuit board from the ventilation duct. The cooling air can be efficiently supplied to the substrate, and the heat radiation efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an elevator heat dissipation device according to Embodiment 1 of the present invention.

FIG. 2 is a front view showing the heat dissipation device of FIG.

FIG. 3 is a perspective view showing an elevator heat dissipation device according to Embodiment 2 of the present invention.

FIG. 4 is an enlarged perspective view showing a main part of FIG. 3;

FIG. 5 is a perspective view showing a heat dissipation device for an elevator according to a third embodiment of the present invention.

FIG. 6 is a perspective view showing a heat dissipation device for an elevator according to a fourth embodiment of the present invention.

FIG. 7 is a perspective view showing an elevator heat dissipation device according to Embodiment 5 of the present invention.

FIG. 8 is a plan view showing an elevator heat dissipation device according to Embodiment 6 of the present invention.

FIG. 9 is a configuration diagram illustrating an example of a conventional heat dissipation device.

[Explanation of symbols]

11 car, 12 guide rail, 14 roller guide, 15 circuit board, 17, 27, 31 ventilation duct,
17a Upper suction port, 17b Lower suction port, 18, 28
Fan device, 19, 32 rotation transmission mechanism, 21 first
Pulley, 22 second pulley, 23 belt, 28a
First fan, 28b Second fan.

Claims (5)

[Claims] The present invention has a plurality of intake / exhaust ports provided on a car for taking in a traveling wind when the car moves up and down and discharging the taken traveling wind, and the traveling wind is supplied to a circuit board mounted on the car. A heat dissipation device for an elevator, comprising a ventilation duct for guiding. 2. A fan device provided on a car for cooling a circuit board mounted on the car, and a roller guide that rolls along a guide rail and guides the car to move up and down. A heat radiating device for an elevator, comprising: a rotation transmitting mechanism that transmits electric power to the elevator. 3. A rotation transmitting mechanism includes a first rotating body that is rotated by rotation of a roller guide, a second rotating body that transmits rotation to a fan device, and a first rotating body between the first and second rotating bodies. The heat radiating device for an elevator according to claim 2, further comprising a circulating body that is wound and transmits the rotation of the first rotating body to the second rotating body. 4. The heat radiating device for an elevator according to claim 2, further comprising a ventilation duct provided on the car and guiding cooling air from the fan device to the circuit board. 5. The fan device according to claim 1, further comprising:
And when one of the first and second fans introduces cooling air into the ventilation duct, the cooling air that has passed through the circuit board is applied to the other of the first and second fans. 5. The heat radiating device for an elevator according to claim 4, wherein the air is discharged from the ventilation duct.