JP5266716B2 - Dustproof device for passenger conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To elongate a replacing period of a filter resulting from the clogging of the filter. <P>SOLUTION: A control board 30 is provided with an air duct 30c sucking in an air current from an intake port 32a arranged below and exhausting the air current, a fan 79 arranged in the air duct 30c, a filter 52 arranged in the intake port 32a, having a first part 52a corresponding to the intake port 32a and a second part 52b except for the part and having at least two times or more of the area of the intake port 32a, a pressure loss sensor 70 detecting a pressure loss value of the filter 52, and a solenoid 58 making the second part 52b of the filter 52 correspond to the intake port 32a by moving the filter 52 based on the pressure loss value and moving the first part 52a to a position not corresponding to the intake port 32a. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

The present invention relates to a dustproof device for a passenger conveyor.

As described in Patent Document 1 below, a conventional dustproof device is composed of a fan that feeds air, a filter that filters out dust from the air that is sent in, and a sensor that detects the air volume of the fan. It is known that the fan speed is controlled to be low in the initial state where the transmittance is high and the fan speed is increased when the filter air clogging occurs and the fan air volume decreases.

According to the dustproof device, the filter clogging progress speed in the vicinity of the initial filter state can be slowed, and after the filter clogging has progressed to some extent, the fan air volume can be increased again to improve the service life.

JP 2001-87612 A

However, when the dustproof device is applied to the control panel of a passenger conveyor, the fan inherently lowers the internal temperature of the control panel by passing the airflow that has passed through the filter into the control panel. In the initial state where the air permeability is high and the fan rotation speed is lowered, there is a problem that the temperature in the control panel rises and is not appropriate.

The present invention has been made to solve the above-mentioned problems, and provides a dustproof device for a passenger conveyor that extends a replacement period due to filter clogging while maintaining proper ventilation in a control panel. With the goal.

A dustproof device for a passenger conveyor according to a first aspect of the present invention is a control panel provided in a machine room of the passenger conveyor and a dustproof device for a passenger conveyor in which a motor is driven by the control panel. A wind tunnel for sucking and discharging the airflow from the air intake port, a fan provided in the wind tunnel, a first portion provided in the air intake port and corresponding to the air intake port from the center to the lower portion, A plate-like filter having a second part from the center to the upper part and having at least twice the area of the inlet, a detection means for detecting a pressure loss value of the filter, and guiding the vertical direction of the filter A guide member, a transmission member on which a lower portion of the filter is mounted, a columnar groove having a concave shape when viewed from the side, a tray provided below the filter, and a central portion of the side surface of the transmission member An abnormality if the pressure loss value exceeds a predetermined threshold value, a solenoid connected to the rod that moves at least a first distance and a second distance shorter than the first distance through the transmission member; Comparison means for generating a signal, first solenoid control means for separating the transmission member and the filter by moving the rod to the first distance based on the abnormality signal, and the passenger conveyor is stopped. A signal generating means for generating a stop signal when the vehicle is running, a second solenoid control means for repeatedly moving the rod to the second distance based on the stop signal, The filter is moved based on the pressure loss value so that the second part corresponds to the intake port, and the first part corresponds to the intake port. It is characterized in that to move the free position.

The dust-proof device for a passenger conveyor according to a second aspect of the present invention drives the fan based on the number of revolutions, arithmetic means for determining the number of revolutions of the fan based on the time when the stop signal and the running signal are generated. Fan driving means.
Thereby, when the temperature of the machine room rises due to the traveling of the passenger conveyor, the fan rotation speed is increased, so that the temperature in the control panel can be properly maintained.

ADVANTAGE OF THE INVENTION According to this invention, the dust-proof apparatus of a passenger conveyor which extends the replacement | exchange period of the filter by filter clogging can be obtained, maintaining the ventilation in a control panel appropriately.

Embodiment 1 FIG.
An embodiment of the present invention will be described with reference to FIGS. 1 is a general view of a passenger conveyor showing an embodiment of the present invention, FIG. 2 is an internal configuration diagram of a control panel shown in FIG. 1, FIG. 3 is a perspective view of a dustproof device shown in FIG. 2, and FIG. FIG. 5 is a control block diagram of the dust proofing device for the passenger conveyor.
In FIG. 1, a passenger conveyor 1 is wound around a main drive sprocket 9 and a driven sprocket 11, which are provided with a step chain 7 attached to a step 5 on upper and lower floors. A driven sprocket 15 is attached to the main shaft 13 attached to the main drive sprocket 9, and a drive chain 17 is wound around the driven sprocket 15 and the drive sprocket 22 of the speed reducer 20. The power from the speed reducer 20 is transmitted to the main drive sprocket 9 via 17. The machine room includes a speed reducer 20 directly connected to a motor 24, a brake 26 provided on a shaft of the motor 24, and a control panel 30 for controlling the motor 24 and the like.

In FIG. 2, the control panel 30 has a front side plate 32 and a rear side plate 33, and is divided into two parts by a partition part 38, and a control device part 30 a that drives and controls the passenger conveyor 1, and a machine room It has a wind tunnel portion 30c for sucking air and flowing airflow. The control device unit 30a has a passenger conveyor control unit 40 that controls the passenger conveyor 1, and the passenger conveyor control unit 40 generates heat such as an inverter that is controlled by the control unit 40 to drive the motor 24 and the like. And a signal generating unit (signal generating means) 43 that generates a stop signal when the passenger conveyor 1 is stopped and generates a travel signal when the passenger conveyor 1 is traveling.
In addition, the wind tunnel portion 30 c has a heat radiating portion 43 that dissipates heat generated from the heat generating portion 41 by means of heat radiating fins, and is provided with an air inlet 32 a that takes in an air flow into the lower portion of the front side plate 32 of the control panel 30. The control panel 30 is provided with a discharge port 32c for discharging the airflow in the front side plate 32 at the center upper portion, a lower dustproof plate 34 covering the side portion of the suction port 32a, and the side portion of the discharge port 32c. An upper dustproof plate 36 for covering is provided.

2 to 4, the dustproof device 50 has a plate-like filter 52 and a top part that is closed and a rectangular cylinder inside, covers the upper part of the filter 52, and guides the vertical direction of the filter 52. The guide member 54 and the lower part of the filter 52 are mounted, and the transmission member 56 having a columnar groove-shaped groove 56U and a rod 58a is fixed to the center of the side surface of the transmission member 56, and the first distance And a solenoid 58 in which the rod 58a moves two distances shorter than the first distance.
The filter 52 has a first part 52a corresponding to the air inlet 32a from the center to the lower part, and a second part 52b upper from the center, and has at least twice the area of the air inlet 32a.
The tip end inner side 56a of the groove 56u of the transmission member 56 is formed smoothly. This is because the lower end of the first portion 52a of the filter 52 is detached from the transmission member 56 when the rod 58a of the solenoid 58 moves by the first distance. A receiving tray 60 for receiving the dust d is provided at the lower portion of the filter 52.
A pressure loss sensor 70 is provided as detection means for detecting the value of the pressure loss at the first portion 52a of the filter 52.

In FIG. 4, when the rod 58a of the solenoid 58 is moved by the first distance, the dustproof device 50 is removed from the groove 56u of the transmission member 56, and the filter 52 is guided by the guide portion 54 and dropped to receive the tray 60. The second portion 52b of the filter 52 covered with the guide portion 54 is formed so as to move to the position of the suction port 32a.
In addition, a gap 54 g is provided between the guide portion 54 and the filter 52. This is provided to remove dust d adhering to the filter 52 by vibrating the rod 58a of the solenoid 58 left and right in FIG. 4 by repeatedly moving the rod 58a by the second distance.

In FIG. 5, the dustproof device 50 compares the pressure loss value from the pressure loss sensor 70 with a predetermined threshold value, and generates a failure signal when the pressure loss value exceeds the threshold value. And an alarm 80 for displaying that an abnormality has occurred.
When the stop signal from the passenger conveyor control unit 40 is counted and the stop signal integration reaches 10 times, the rod 58a of the solenoid 58 is reciprocated by a second distance, and the transmission member 56 is reciprocated in the horizontal direction to filter 52. And a solenoid control unit 74 that drops the dust d adhering to the filter 52.
When an abnormal signal is generated, the solenoid control unit 74 waits until a stop signal is generated and contracts the rod 58a of the solenoid 58 by a first distance to remove the lower end of the first part 58a of the filter 56 from the groove 56u of the transmission member 56, 52 is formed to fall substantially vertically along the guide portion 54 so that the lower end of the first portion 58a of the filter 52 contacts the receiving pan 60.

In FIG. 5, when the ratio of the travel signal from the stop signal and the travel signal is high, a duty calculation unit 76 that generates a rotation signal for increasing the rotation speed of the intake fan 79, and the rotation speed of the intake fan 79 is controlled by the rotation signal. And a fan drive unit 78 that is driven.
When the current of the motor 24 is detected and the current detection value becomes high, the rotational speed of the intake fan 79 may be increased.

The operation of the passenger conveyor configured as described above will be described with reference to FIGS. FIG. 6 is a time chart of the dustproof device for the passenger conveyor shown in FIG.
Now, at time t1 when the passenger conveyor 1 repeats running and stopping, when the solenoid control unit 74 accumulates the stop signal and counts 10 times, the rod 58a of the solenoid 58 is reciprocated by the second distance and the transmission member 56 is moved. By reciprocating in the horizontal direction, the lower end portion of the filter 52 is vibrated and the dust d adhering to the first portion 52 a of the filter 52 is dropped and put into the tray 60.
In this way, every time the stop signal is counted 10 times, the lower end portion of the filter 52 is vibrated and the dust d adhering to the filter 52 is dropped. The dust d on the filter 52 is cleaned.

When time elapses and dust d adheres to the filter 50 at time t2, the comparison unit 72 compares the pressure loss value from the pressure loss sensor 70 with a predetermined threshold value, and the pressure loss value is the threshold value. If an abnormal signal is generated, the solenoid controller 74 waits until a stop signal is generated, and then the rod 58a of the solenoid 58 is contracted by a first distance to filter from the groove 56u of the transmission member 56. 56, the lower end of the first portion 52a of the filter 52 is removed, the filter 52 is dropped substantially vertically along the guide portion 56, and the lower end of the first portion 52a of the filter 52 is brought into contact with the receiving tray 60. Thereby, the second portion 52b of the filter 52 to which the dust d is not attached is made to correspond to the intake port 32a, and air is caused to flow from the second portion 52b.

The dustproof device for a passenger conveyor according to the above embodiment includes a control panel 30 provided in a machine room of the passenger conveyor and a dustproof device for a passenger conveyor that drives the motor 24 by the control panel 30. A wind tunnel 30c that sucks and discharges airflow from the provided air inlet 32a, a fan 79 provided in the air tunnel 30c, and a first portion that is provided in the air inlet 32a and that corresponds to the air inlet 32a. 52a and a second part 52b other than that, and a filter 52 having at least twice the area of the air inlet 32a, a pressure loss sensor 70 for detecting the pressure loss value of the filter 52, and the pressure loss value Based on this, the filter 52 is moved so that the second part 52b of the filter 52 corresponds to the inlet 32a, and the first part 52a does not correspond to the inlet 32a. A solenoid 58 to move to the location, but with a.

As a result, the solenoid 58 moves the filter 52 based on the pressure loss value so that the second part 52b of the filter 52 corresponds to the intake port 32a, and the first part 52a moves to a position not corresponding to the intake port 32a. To do. Therefore, it is possible to extend the replacement period due to clogging of the filter 52 while properly maintaining the ventilation in the control panel 30 while maintaining the ventilation in the control panel 30 properly.

Moreover, the dust-proof device for the passenger conveyor of the above embodiment includes a substantially concave transmission member 56 provided at the lower end of the first portion 52a of the filter 52, and a solenoid 58 connected to a rod 58a that moves the transmission member 56. It is preferable to comprise.
As a result, the rod 58a of the solenoid 58 can be moved with a simple configuration to cause the second portion 52b of the filter 52 to correspond to the intake port 32a and to move to a position where the first portion 52a of the filter 52 does not correspond to the intake port 32a. .

Moreover, the dust-proof device for the passenger conveyor according to the above-described embodiment includes the comparison unit 72 that generates an abnormal signal when the pressure loss value of the pressure sensor 70 exceeds a predetermined threshold, and the rod 58a based on the abnormal signal. It is preferable to include a solenoid control unit 74 that separates the transmission member 56 and the lower end of the filter 52 by moving to a distance.
Accordingly, the filter 52 falls substantially vertically along the guide portion 54 based on the abnormality signal, and the second portion 52b of the filter 52 becomes the position of the intake port 32a of the control panel 30. Therefore, the air outside the control panel 30 can flow in using the second portion 52b of the filter 52 to which the dust d is not attached.

Further, the rod 58a of the renoid 58 in the dustproof device for the passenger conveyor of the above embodiment is formed to move at least the first distance and the second distance shorter than the first distance, and the passenger conveyor is stopped. A signal generation unit 43 that generates a stop signal when the vehicle is traveling, and a solenoid control unit 74 that repeatedly moves the rod 58a of the solenoid 58 to the second distance based on the stop signal. It is preferable to provide.
Thereby, the filter 52 is mechanically vibrated by the rod 58a of the solenoid 58, so that the dust d adhering to the filter 52 can be shaken off.

Moreover, the dust-proof device for the passenger conveyor of the above-described embodiment includes a duty calculation unit 76 that determines the number of rotations of the intake fan 79 based on the time when the stop signal and the travel signal from the signal generation unit 43 are generated, and the rotation It is preferable to include a fan driving unit 78 that drives the intake fan 79 based on the number. Thereby, when the temperature of the machine room rises due to the traveling of the passenger conveyor 1, the fan rotation speed is increased, so that the temperature in the control panel 30 can be properly maintained.

  The present invention can be applied to a dustproof device for a passenger conveyor.

1 is an overall view of a passenger conveyor showing an embodiment of the present invention. It is an internal block diagram of the control panel shown in FIG. FIG. 3 is a perspective view of the dustproof device shown in FIG. 2. It is sectional drawing of the arrow IV-IV dustproof device shown in FIG. It is a control block diagram of the dustproof device of a passenger conveyor. It is a time chart of the dustproof device of a passenger conveyor shown in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Passenger conveyor, 24 Motor, 30 Control board, 32a Inlet, 43 Signal generator, 50 Dust-proof device, 52 Filter, 56 Transmission member, 58 Solenoid, 58a Rod, 70 Pressure loss sensor, 79 Intake fan.

Claims (2)

In a control panel provided in the machine room of the passenger conveyor, and a dustproof device for the passenger conveyor that drives the motor by the control panel,
The control panel draws in airflow from an air inlet provided below, and discharges the airflow,
A fan provided in the wind tunnel;
A plate-like filter that is provided at the intake port and has a first part corresponding to the intake port from the center to the lower part and a second part at the upper part from the center , and having at least twice the area of the intake port; ,
Detecting means for detecting a pressure loss value of the filter ;
A guide part for guiding the vertical direction of the filter;
While placing the lower part of the filter, a transmission member having a columnar groove having a concave shape in side view,
A saucer provided below the filter;
A rod fixed to a side central portion of the transmission member;
A solenoid coupled to the rod that moves the transmission member at least a first distance and a second distance shorter than the first distance;
Comparing means for generating an abnormal signal when the pressure loss value exceeds a predetermined threshold;
First solenoid control means for separating the transmission member and the filter by moving the rod to the first distance based on the abnormal signal;
A signal generating means for generating a stop signal when the passenger conveyor is stopped, and generating a travel signal when the passenger conveyor is running;
Second solenoid control means for repeatedly moving the rod to the second distance based on the stop signal,
Passenger conveyer characterized by the Turkey move the second part by moving the filter based on the pressure loss value with correspond to the intake port, the first part in a position which does not correspond to the air inlet Dustproof device. Arithmetic means for determining the rotational speed of the fan based on the time when the stop signal and the travel signal are generated;
Fan driving means for driving the fan based on the rotational speed;
The dustproof device for a passenger conveyor according to claim 1 , comprising:

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