KR20160039367A

KR20160039367A - Elevator device

Info

Publication number: KR20160039367A
Application number: KR1020140132317A
Authority: KR
Inventors: 구천우
Original assignee: 한국미쓰비시엘리베이터 주식회사
Priority date: 2014-10-01
Filing date: 2014-10-01
Publication date: 2016-04-11
Also published as: WO2016053018A3; WO2016053018A2

Abstract

TECHNICAL FIELD [0001] The present invention relates to an elevator apparatus, and is a technique for detecting the temperature of an elevator hoisting machine so as to be able to display it to the outside. According to the present invention, there is provided a control system for a vehicle comprising a traction machine for ascending and descending an elevator car by a driving force of a motor, a temperature detector for detecting temperature of the traction machine to output temperature detection information, And outputting the detected temperature detection information to the outside.

Description

[0001] Elevator device [0002]

TECHNICAL FIELD [0001] The present invention relates to an elevator apparatus, and is a technique for detecting the temperature of an elevator hoisting machine so as to be able to display it to the outside.

Generally, an elevator is provided with a hoisting machine on an upper part of a main frame forming a hoistingway, and an elevator car is connected to a hoisting rope so that a passenger or a cargo can be carried in a vertical direction.

In this way, the elevator operated for rapid movement from the building to the upper or lower floor moves the elevator car connected to the rope in the vertical direction by moving the rope wound on the sheave from the hoisting machine of the machine room installed on the upper part of the building It is made up of operating modes that can be made.

Here, the hoisting machine is a device for driving the elevator car by hoisting a hoisting rope and rotating a pulley. Such a traction machine is constituted of a driving means for providing a rotational force, a pulley for winding the elevator car to hang up the hoisting rope so as to move up and down, and a brake for stopping the rotation of the pulley during stopping or stopping the elevator car.

In order to operate an elevator equipped with a traction machine, first, the driving means must perform a series of motions such as start, acceleration, running, deceleration, conception and stop of the elevator car by an instruction of the control unit.

When the traction motion of the elevator car is not performed due to the reason that the elevator car is pulled up and down and the elevator car is stopped when the building is stopped, A braking device is provided as a safety device that can maintain the stopped state of the elevator car. In this state, the elevator car can be safely braked without moving up and down unless the brake of the braking device is normally operated.

However, in the elevator hoisting machine, the stator winding is heated by repeating the rotation driving, and heat is transmitted to the frame connected to the winding, thereby affecting the braking force. Especially, when the operation frequency of the elevator is high, the required performance can not be obtained due to the heat of the hoisting machine, or the device may malfunction or fail.

The present invention is characterized in that the temperature of the elevator hoist is detected in real time and displayed outside so that the hoist can operate only at a safe temperature.

An elevator apparatus according to an embodiment of the present invention includes: a traction machine for elevating and lowering an elevator car by a driving force of a motor; A temperature detector for detecting the temperature of the traction machine and outputting temperature detection information; And a drive control section for controlling the driving of the traction machine in correspondence with the output of the temperature detection section and outputting the temperature detection information detected by the temperature detection section to the outside.

The present invention detects the temperature of the elevator hoist in real time and displays it outside so that the cause of malfunction due to overheating of the hoist can be immediately resolved.

In addition, the present invention provides an effect of preventing the lowering of the insulating capability of the traction machine and ensuring stable operation by allowing the traction machine to operate only at a safe temperature.

It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. .

1 is a configuration diagram of an elevator apparatus according to an embodiment of the present invention;
2 is a view showing a temperature display unit of the drive control unit of FIG.
3 is a flow chart for explaining the operation of the elevator apparatus according to the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an elevator apparatus according to an embodiment of the present invention.

The embodiment of the present invention includes a control unit 100, a traction machine 200, and a temperature detection unit 300.

The control unit 100 includes a power unit 110, a motor driver 120, a transformer 130, a power supply unit 140, a main power unit 150, and a drive controller 160. The motor driving unit 120 includes a rectifying unit 121, a condenser 122, a regenerative resistor 123, and an inverter 124. The temperature detector 300 includes a temperature sensor 310, a filter 320, and an analog-to-digital (A / D)

The power supply unit 110 supplies three-phase AC power to the motor driving unit 120 and the transformer 130 through an electrically openable and closable switch. The motor driving unit 120 applies three-phase AC power to the motor 210 through a high-speed switching operation. The rectifying unit 121 rectifies the AC voltage applied from the power supply unit 110 and converts it into a DC voltage.

The motor driving unit 120 is a structure including the inverter 124. The inverter 124 uses a power conversion element such as an insulated gate bipolar transistor (IGBT) or an intelligent power module (IPM).

The inverter 124 generates an alternating current having an arbitrary voltage and frequency which is varied by switching the direct-current voltage generated in the rectifying section 121 and supplies the alternating current to the motor 210. Accordingly, the motor 210 is driven at a variable speed by the current supplied from the inverter 124. [

A condenser 122 and a regenerative resistor 123 are connected between the rectification part 121 and the inverter 124. [ Here, the capacitor 122 smoothes the pulsating DC voltage applied from the rectifying part 121. [ The regenerative resistor 123 consumes the power regenerated in the regenerative operation of the traction machine 200 as heat. Accordingly, when the voltage of the capacitor 122 exceeds the reference voltage, the regenerative switch of the inverter 124 is turned on and the current flows to the regenerative resistor 123.

The transformer 130 compensates the lowered voltage level of the power supplied from the power supply unit 11. The power supply unit 140 charges the condenser 122 to supply power to the inverter 124. [ The main power supply unit 150 receives the power supplied from the power supply unit 140 and supplies the operating voltage to the temperature detection unit 300 and the drive control unit 160.

The drive control unit 160 controls the driving of the elevator car in accordance with the power supplied from the main power unit 150. [ That is, the drive control unit 160 stores and controls information for determining whether there is an abnormality in the elevator, information for switching the operation mode according to the elevator state, operation method information corresponding to the operation mode, and the like. For example, when an abnormality of the elevator is detected by overheating of the hoisting machine 200, the drive control unit 160 can adjust the traveling speed, stop state, and power supply state of the elevator car.

The drive control unit 160 determines the operation control parameter of the elevator when an abnormal signal due to the heat generation of the traction device 200 is sensed from the temperature detection unit 300. Here, the operation control parameters include the speed of the elevator car, the acceleration of the elevator car, the deceleration of the car, the jerk of the car, the door open time, the door open speed, State, quick-braking state, and the number of times the call can be allocated.

Here, the door open time is the time from when the door is opened to when the door is automatically closed without operating the door closing button. In addition, the call assignable number is a constraint condition when assigning an elevator car to a landing call when a plurality of car spaces are controlled as a group.

Then, the drive controller 160 externally displays the digital value applied from the A / D (analog / digital) converter 330. Accordingly, the external manager can visually recognize the temperature due to the overheating of the hoisting machine 200 and check it.

In addition, a predetermined temperature reference value is preset in the drive control section 160. [ That is, the drive control unit 160 divides the detected temperature range and outputs a warning signal or a danger signal when the temperature of the traction machine 200 detected by the temperature detection unit 300 becomes equal to or higher than a predetermined temperature reference value .

Further, the hoisting machine 200 winds up the rope through the driving of the motor 210 to move the respective elevator cars. At this time, the motor 210 is operated by receiving driving power from the motor driving unit 120.

Further, if the load balance between the car and the balance weight is driven for a long time in an unbalanced state or is driven for a long time in a state where the acceleration / deceleration speed and the speed are high, the temperature of the traction machine 200 rises.

Accordingly, the temperature detector 300 according to the embodiment of the present invention receives power from the main power unit 150 and senses and measures the temperature of the traction machine 200 in real time, and transmits the measured temperature to the drive controller 160.

At this time, the temperature sensor 310 of the temperature detector 300 may be formed of a device such as a PTC (Positive Temperature Coefficient) thermistor. The temperature sensor 310 may output an analog value for the measured temperature.

This temperature sensor 310 may be attached to a portion of the traction machine 200 close to the stator winding. Therefore, the temperature sensor 310 can detect the temperature of the traction machine 200 without being interfered with the rotor of the traction machine 200.

The filter 320 filters the noise of the analog value applied from the temperature sensor 310. The A / D converter 330 converts the analog value applied from the filter 320 into a digital value, and outputs the digital value to the drive controller 160.

The temperature sensor 310 is included in the traction machine 200 and the filter 320 and the A / D converter 330 are provided outside the controller 100 in the embodiment of the present invention . However, the present invention is not limited thereto, and the filter 320 and the A / D converter 330 may be included in the controller 100.

2 is a view showing the temperature display unit 161 of the drive control unit 160 of FIG.

The drive control unit 160 includes a temperature display unit 161 for displaying the temperature detected by the temperature sensor 310 externally. The temperature display unit 161 includes a lamp 162 for lighting the detected temperature condition to a color corresponding to the temperature level.

The temperature display unit 161 includes a display unit 163 for displaying the detected temperature in numbers. The display unit 163 includes a 7 segment segment, and displays the detected temperature as a number. For example, when the number "-40" is displayed on the display unit 163, it indicates that the temperature of the traction machine 200 detected is -40 占 폚.

3 is a flowchart illustrating an operation of an elevator apparatus according to an embodiment of the present invention.

A method for controlling the operation of the traction machine 200 in the control unit 100 according to the temperature detected by the temperature detection unit 300 is as shown in Table 1 below.

order Lamp color Temperature condition Traction machine operation One Colorless Reference temperature -40 ° C Normal operation 2 green Reference temperature -30 ℃ Normal operation 3 yellow Reference temperature -20 ℃ Normal operation 4 Orange Reference temperature -10 ℃ Stop after stopping at the top floor 5 Red Reference temperature Emergency stop, power off

For example, when the temperature detected by the traction machine 200 is equal to or lower than the reference temperature -40 占 폚 (step S1), the lamp 162 lights up in a colorless state and the temperature detected in the right- (Step S2) In this case, since the temperature condition of the traction machine 200 is included in the normal range, the traction machine 200 operates normally.

When the temperature detected by the hoisting machine 200 falls within the range of -30 DEG C to -40 DEG C (step S3), the lamp 162 lights up in the "green" (Step S4). In this case, since the temperature condition of the traction machine 200 is included in the normal range, the traction machine 200 operates normally.

When the temperature detected by the traction machine 200 falls within the range of -20 占 폚 or lower to -30 占 폚 (step S5), the lamp 162 lights up in the "yellow" color and the display portion 163 (Step S6). In this case, since the temperature condition of the traction machine 200 is included in the normal range, the traction machine 200 operates normally.

However, when the temperature detected by the hoisting machine 200 falls within the range of -10 占 폚 or lower to -20 占 폚 (step S7), the lamp 162 lights up in the "orange" color and the display 163 (Step S8). In this case, since the temperature condition of the hoisting machine 200 is included in the "warning" range, the hoisting machine 200 moves to the nearest layer (the nearest layer in the elevator driving direction) And then stops.

Further, when the temperature detected by the traction machine 200 is higher than the reference temperature -10 DEG C (step S9), the lamp 162 is turned on in the "red" color, and the temperature detected in the right- (Step S10). In this case, since the temperature condition of the traction machine 200 is included in the "dangerous" range, the traction machine 200 is suddenly stopped and the power is shut off.

It should be understood that the embodiments described above are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

Claims

A traction machine for raising and lowering the car by the driving force of the motor;
A temperature detector for detecting the temperature of the traction machine and outputting temperature detection information; And
And a drive control section for controlling the drive of the traction machine in response to the output of the temperature detection section and outputting the temperature detection information to the outside.

The apparatus of claim 1, wherein the temperature detector
A temperature sensor for detecting the temperature of the traction machine;
A filter for filtering an output of the temperature sensor; And
And an A / D converter for converting an analog value output from the filter into a digital value.

The elevator apparatus according to claim 2, wherein the temperature sensor is attached adjacent to a stator winding of the traction machine.

The elevator apparatus according to claim 1, wherein the drive control unit further comprises a temperature display unit for displaying the temperature detection information detected by the temperature detection unit.

5. The apparatus according to claim 4, wherein the temperature display unit
A lamp for lighting the temperature detection information in a plurality of colors corresponding to a temperature level; And
And a display unit for displaying the temperature detection information in numerical form.

The elevator apparatus according to claim 1, wherein the drive control unit controls driving of the traction machine differently according to a temperature level of the temperature detection information.

7. The apparatus of claim 6, wherein the drive control unit
Controlling the traction machine to be in a normal operation when the detected temperature is equal to or lower than a first level, operating and stopping the traction machine to the most severe layer when the detected temperature exceeds a first level and is lower than a second level, Is stopped and the power supply is cut off when the second level is exceeded.

The elevator apparatus according to claim 1, further comprising a control unit for controlling driving of the motor and supplying power to the driving control unit.

9. The apparatus of claim 8, wherein the control unit
A main power supply unit for supplying an operation voltage to the drive control unit and the temperature detection unit; And
And a motor driving unit for supplying a driving signal to the motor.

The motor driving apparatus according to claim 9, wherein the motor driving unit
A rectifying unit for rectifying the AC voltage applied from the power supply unit and converting the rectified AC voltage into a DC voltage;
An inverter for supplying a driving current to the motor corresponding to the DC voltage;
A capacitor connected between the rectifying unit and the inverter for smoothing the output of the rectifying unit; And
And a regenerative resistor connected between the rectification part and the inverter.