JP2009113960A - Car top control device of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To more properly cool a heat generation part of a car top control device by natural cooling. <P>SOLUTION: The car top control device 80 comprises: an inverter 55 driving a door motor 24 for opening/closing a door of a car 15 and generating a variable voltage and a variable frequency; and a heat dissipation fin 57 for dissipating heats generated from the inverter 55. The inverter 55 and the heat dissipation fin 57 are built in the car top control device 80 and the device is installed on the car 15. The device also comprises an air channel 80a for taking an airflow from an air intake 87a provided on one side end of the car 15 for cooling the heat dissipation fin 57 and discharging the airflow from an exhaust port 89a provided on the other side end of the car 15, and a guide part for taking the airflow generated at least either when the car 15 goes up or down in the air intake 87a. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to an elevator car control device.

As described in Patent Document 1 below, a conventional elevator car control device is an elevator in which a control device in which a door control unit, an operation switch and the like are mounted on a box is installed on the car. It is known that a ventilation fan for ventilating the interior of a car is installed in the body or on the ceiling of the car, and the heat generating part of the control device is placed in contact with the air path of the ventilation fan.

According to such an on-car control device, the ventilating fan is installed in the box of the control device or on the ceiling of the car, and the heat generating portion of the control device is brought into contact with the air passage of the ventilating fan, so that the heat generating portion is cooled by the ventilating fan. . The heat generating part is cooled by a ventilation fan, and there is an effect that a dedicated cooling fan becomes unnecessary.

JP-A-6-321465

However, the blowing capacity of the cooling fan by the above-mentioned control device on the car has to have both the ventilation capacity in the car and the cooling capacity of the heat generating part, and there is a problem that the blowing capacity of the cooling fan increases.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator car control device that appropriately cools the heat generating portion of the car control device by natural cooling.

Another object of the present invention is to naturally cool the heat generated from the heat generating part of the on-car control device and to properly drive the heat generating part of the car upper control device while saving energy by appropriately driving a cooling fan that assists this. It is an object of the present invention to provide an elevator car control device that drives a cooling fan under predetermined conditions while mainly performing cooling.

According to a first aspect of the present invention, an elevator car control device drives a door motor that opens and closes a car door, voltage variable means for generating a variable voltage variable frequency, and heat dissipation that dissipates heat generated from the voltage variable means. And an elevator car control device provided on the car, which is provided at one end of a side surface of the car for cooling the heat dissipation means. A wind tunnel for sucking an air flow from the air intake port and discharging the air flow from a discharge port provided at the other end of the side surface of the car, and an air flow generated in at least one of the car ascending and descending And a guide portion to be taken in.

In the elevator car control device according to the second aspect of the present invention, it is preferable that the discharge port is provided with an exhaust fan that is provided at the discharge port and discharges the airflow.
As a result, the heat generated from the heat radiating means of the on-car control device is naturally cooled, and the exhaust fan that assists this is provided, so that the heat radiating means can be appropriately cooled even when the car is stopped.

It is preferable that the guide part in the elevator car control apparatus according to the third aspect of the present invention includes a windmill provided to flow the airflow into the wind tunnel. Thereby, since the windmill provided so that the airflow generated when the car ascends or descends flows in the wind tunnel is provided, the airflow easily flows into the on-car control device, and the heat radiation means can be efficiently cooled.

The elevator car control apparatus according to the fourth aspect of the invention preferably includes first control means for driving the exhaust fan when a call signal is not generated for a predetermined time after driving the door motor. Thereby, the heat radiating means of the on-car control device can be cooled while saving energy.

The elevator car upper control apparatus according to the fifth aspect of the invention preferably includes second control means for driving the exhaust fan when the car is stopped on the top floor. Thereby, the heat radiating means of the on-car control device can be cooled while saving energy.

ADVANTAGE OF THE INVENTION According to this invention, the control apparatus on an elevator car which reduces clogging of a filter can be obtained, maintaining ventilation in a control panel appropriately.
In addition, the heat generated from the heat generating portion of the car control device can be naturally cooled, and the heat generating portion of the car control device can be appropriately cooled while saving energy by appropriately driving an exhaust fan that assists the heat generation.

Embodiment 1 FIG.
An embodiment of the present invention will be described with reference to FIGS. 1 is an overall view of an elevator showing an embodiment, FIG. 2 is a front view of the elevator door shown in FIG. 1, FIG. 3 is a plan view of the elevator hoistway shown in FIG. 1, and FIG. FIG. 5 is a side view (a) in the elevator shown in FIG. 1 and a curve (b) showing the temperature distribution in the hoistway.
In FIG. 1, the elevator includes a car drive unit 5 that drives a car 15 by a main motor 7 and a door drive unit 50 that drives a car-side door 21 by a door motor 24 via a door mechanism 30.

The car drive unit 5 is fixed to one end of a rope 11 that is hooked on the sheave 9 by inputting the three-phase AC power source 3 and driving the main motor 7 by the drive control unit 6 to drive the sheave 9 of the hoisting machine. The weight 13 and the cage 15 fixed to the other end of the rope 11 are formed to move up and down.
The car 15 includes a car-side door 21 and a car call button 15c that generates a call signal. The hall includes a landing door 23 that operates in conjunction with the car-side door 21 and a hall that generates a call signal. And a call button 25. The controller 18 has a controller 18 that inputs a call signal from the car call button 15c and the hall call button 25 to give a control command signal to the drive control unit 6 and generates a door control command signal for driving the door. .
In addition, opening and closing of the car side door 21 and the landing door 23 is simply referred to as opening and closing of the door.

The door driving unit 50 receives the three-phase AC power supply 3 to generate a DC voltage including a pulsating voltage, a converter 51 for smoothing the DC voltage, and the DC voltage to the door motor 24 with a variable voltage variable frequency. And an inverter 55 to be driven. The door control command signal is input to the inverter 55 via the inverter drive unit 57. A car control device 80 including the converter 51, the capacitor 53, and the inverter 55 is fixed to the top of the car 15.
Further, the output of the converter 51 is configured to operate the exhaust fan 70 via the operation switch 72.

In FIG. 2, the door mechanism 30 includes a girder 31 provided above the car-side door 21 and a rail 32 provided horizontally from the lower end of the girder 31, and the car-side door 21 is supported by the rail 32. It is formed so as to move in the horizontal direction by being guided by the hanger 39.

A first driving wheel 35 fixed to the output shaft of the door motor 24 is attached to the beam 31, and an endless geared belt 37 is connected to the first driving wheel 35 and the second driving wheel 38 fixed to the beam 31. It is hung on. And it has the connection tool 39 which propagates the operation | movement of the belt 37 to the car side door 21. As shown in FIG. By these mechanisms, the torque output from the door motor 24 is transmitted to the landing door 23 shown in FIG. 3 via the belt 37 and the connecting device 39 so that the door is opened and closed. When the car side door 21 is fully opened, it abuts against the stopper 36 and stops.

In FIG. 3, a car 15 and a weight 13 are housed in a hoistway 40 so as to be able to move up and down, and a car control device 80 is provided on the car 15. A part of the car control device 80 protrudes from the car 15.
3 and 4, the car upper control device 80 has a box-like shape as a whole, one end thereof is opened, and a first side plate having a top plate 81, a front plate 83, a rear plate 85, and an intake port 87a. 87 and a second side plate 89 having a discharge port 89a, and a wind tunnel 80a is formed therein, and an exhaust fan 70 is provided in the discharge port 89a. A filter 91 is engaged and fixed to the intake port 87a. A T-shaped guide plate 82 that protrudes from the side surface of the car 15 and guides the airflow to the intake port 87a is provided to suck in the airflow generated when the car 15 is raised or lowered. An airflow guide portion (guide portion) having a shaped wind tunnel is formed. Here, the reason why it is formed so as to protrude from the side surface of the car 15 is to make it easy to suck in the airflow generated when the car 15 is raised or lowered.

A wiring board 61 is fixed on the car 15 via four cylindrical members 59. A converter 51, a capacitor 53, and an inverter 55 are fixed to the wiring board 61. In the wind tunnel 80a, the converter 51, Radiation fins 57 for radiating heat generated from the inverter 55 are provided. Inclined plates 93 and 95 are fixed to the top plate of the car 15 from each side end of the wiring board 61.

When the car 15 stops on the top floor, the exhaust fan 70 has a temperature of the hoistway 40 as shown in FIG. 5 that increases the temperature on the top floor. (2) The operation switch 72 as the control means is closed to operate. Further, the exhaust fan 70 is configured to operate by closing the operation switch 72 as the first control means when a call signal has passed for a certain time, for example, 5 seconds to 10 seconds after stopping. Yes. This generates heat from the converter 51 and the inverter 55 by opening and closing the door when the car 15 is stopped. At this time, if the car 15 immediately rises or falls, the airflow generated at this time is taken into the wind tunnel 80a of the car upper control device 80, and ventilation is promoted. It becomes insufficient. For this purpose, the exhaust fan 70 is operated to forcibly ventilate the wind tunnel 80a of the car controller 80.

The operation of the on-car control device configured as described above will be described with reference to FIGS.
Assuming that the vehicle 15 is traveling in the upward direction (downward direction), as shown in FIG. 4, as shown in FIG. In the wind tunnel 80a and discharged through the non-flowing exhaust fan 70 as shown by the solid line (dashed line) arrow.
When the car 15 arrives at the top floor, the operation switch 72 is closed and the exhaust fan 70 is operated to promote ventilation in the car upper control device 80.

Next, when the car 15 is stopped, the inverter 55 is operated to open and close the door, and the call signal is not generated for a certain period of time, the operation switch 72 is closed and the exhaust fan 70 is operated to operate the on-car control device. The ventilation of 80 wind tunnels 80a is promoted.

Embodiment 2.
Another embodiment of the present invention will be described with reference to FIG. FIG. 6 is a cross-sectional view of a car control device according to another embodiment of the present invention. In FIG. 6, the same reference numerals as those in FIG. 4 denote the same parts, and a description thereof is omitted.
In FIG. 6, a windmill 101 is provided on one end side of the car upper control device 80, and the airflow generated when the car 15 is raised or lowered by the windmill 101 is easily sucked.

The elevator car on-board control device of the above embodiment drives the door motor 24 that opens and closes the door of the car 15, and generates an inverter 55 that generates a variable voltage variable frequency, and a heat radiation fin 57 that dissipates heat generated from the inverter 55. The elevator 55 has a built-in inverter 55 and a heat radiating fin 57, and an elevator car control device 80 provided on the car 15. The air intake port is provided at one end of the side surface of the car 15 to cool the heat radiating fin 57. A wind tunnel 80a for sucking an air flow from 87a and discharging the air flow from a discharge port 89a provided at the other end of the side surface of the car 15, and an air flow generated at least when the car 15 rises and falls And a guide portion to be taken in.
Thereby, heat generating parts, such as the inverter 55 of the car control apparatus 80, can be appropriately cooled by natural cooling.

In the on-cage control device 80 of the above-described embodiment, it is preferable to provide an exhaust fan 70 that is provided at the discharge port 89a and discharges airflow. As a result, the heat generated from the inverter 55 of the on-car control device 80 is naturally cooled, and the exhaust fan 70 is provided to assist this. Therefore, even if the car 15 is stopped, the heat generating part such as the inverter 55 is appropriately Can be cooled.

The on-cage controller 80 of the above embodiment preferably turns on (closes) the operation switch 72 that drives the exhaust fan 70 when the call signal is not generated for a predetermined time after the door motor 24 is driven. Thereby, heat generating parts, such as the inverter 55 of the car control apparatus 80, can be cooled, aiming at energy saving.

It is preferable that the on-car control device 80 of the above embodiment turns on (closes) the operation switch 72 that drives the exhaust fan 70 when the car 15 is stopped on the top floor. Thereby, heat generating parts, such as the inverter 55 of the car control apparatus 80, can be cooled, aiming at energy saving.

Since the car control apparatus 80 according to the above embodiment includes the windmill 101 provided to flow the airflow generated when the car 15 is raised or lowered into the wind tunnel 80, the airflow is generated in the car control apparatus 80. It becomes easy to flow in and the inverter 55 etc. can be cooled efficiently.

  The present invention can be applied to an elevator car control device.

1 is an overall view of an elevator showing an embodiment of the present invention. It is a front view of the door of the elevator shown in FIG. It is a top view in the hoistway of the elevator shown in FIG. FIG. 4 is a cross-sectional view of the car control device showing the arrow IV-IV in FIG. 3. It is the side view (a) in the raising / lowering shown in FIG. 1, and the curve figure (b) which shows the temperature distribution in a hoistway. It is sectional drawing of the control apparatus on a car by other embodiment of this invention.

Explanation of symbols

  15 car, 24 door motor, 55 inverter (voltage variable means), 57 heat dissipating fin (heat dissipating means), 70 exhaust fan, 72 operation switch (first and second control means), 80 car top controller, 80a wind tunnel, 87a air intake Mouth, 89a Exhaust port, 101 windmill.

Claims (5)

A voltage variable means for driving a door motor for opening and closing a car door and generating a variable voltage variable frequency;
Heat radiating means for radiating heat generated from the voltage variable means;
The voltage variable means, the heat dissipating means, and an elevator car control device provided on the car,
A wind tunnel for sucking an airflow from an air inlet provided at one end of the side surface of the car to cool the heat dissipating means, and exhausting the airflow from an outlet provided at the other end of the side surface of the car;
A guide portion that takes in the airflow generated in at least one of the cages when the car is raised and lowered;
An elevator car control device characterized by comprising: An exhaust fan that is provided at the exhaust port and exhausts the airflow;
The elevator car control device according to claim 1, further comprising: The guide portion includes a windmill provided to flow the airflow through the wind tunnel.
The elevator car control apparatus according to claim 1, wherein the elevator car control apparatus is provided. First driving means for driving the exhaust fan when a call signal is not generated for a predetermined time after driving the door motor;
The elevator car control device according to claim 2 or 3, further comprising: Second control means for driving the exhaust fan when the car is stopped on the top floor;
The elevator on-car control device according to any one of claims 2 to 4, further comprising:

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