WO2016053018A2 - Elevator apparatus - Google Patents

Abstract

The present invention relates to an elevator apparatus, and to a technique detecting the temperature of an elevator traction machine so as to display the temperature to the outside. The present invention comprises: the traction machine for raising and lowering an elevator car by means of a motor driving force; a temperature detection unit for outputting temperature detection information by detecting the temperature of the traction machine; and a driving control unit for controlling the driving of the traction machine in correspondence to the output of the temperature detection unit and outputting, to the outside, the temperature detection information detected by the temperature detection unit.

Description

Elevator device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator apparatus and is a technique for detecting the temperature of an elevator hoisting machine and displaying the temperature outside.

In general, the elevator is provided with a hoist on the upper part of the main frame forming the hoistway, the elevator car is connected to the hoisting rope has a structure that can transport passengers or cargo in the vertical direction.

The elevator, which is operated for rapid movement to the upper or lower floor in the building, moves the elevator car connected to the rope vertically by moving the rope wound on the pulley in the hoist of the machine room installed at the upper part of the building. It's a way of working.

Here, the hoist is a device that drives the elevator car by hanging the hoisting rope and rotating the pulley. The hoisting device includes a drive means for providing rotational force, a pulley for hanging the elevator car on a hoisting rope to move up and down, and a brake for stopping the rotation of the pulley when driving and stopping the elevator car or maintaining the stopped state.

In order to drive an elevator equipped with a hoist, first, the driving means must perform a series of movements such as starting, accelerating, driving, decelerating, stopping and stopping the elevator car by the command of the controller.

In addition, in the hoisting machine, the elevator car is pulled up and down to perform the lifting and lowering movement, and when the elevator car is not pulled out due to reasons such as maintaining the stopped state of the elevator car or stopping power in case of an inter-floor stop. A braking device is provided as a safety device for maintaining an elevator car in a stopped state. In order to maintain the stop state, the brake of the brake device must be normally operated so that the elevator car can be safely braked without lifting and lowering motion.

However, in the elevator hoisting machine, the stator winding generates heat by repeating the rotational drive, and heat is conducted to the frame connected to the winding, thereby affecting the braking force. In particular, when the operation frequency of the elevator is high, heat generated by the hoisting machine may not be able to produce the required performance, or the device may malfunction or fail.

The present invention is characterized by allowing the hoist to operate only at a safe temperature by detecting the temperature of the hoist for elevator in real time and displaying it externally.

An elevator apparatus according to an embodiment of the present invention, the hoisting machine for lifting the car by the driving force of the motor; A temperature detector for detecting a temperature of the hoist and outputting temperature detection information; And a drive controller which controls the drive of the hoist according to the output of the temperature detector and outputs the temperature detection information detected by the temperature detector to the outside.

The present invention detects the temperature of the hoist for elevator in real time and displays the outside to immediately solve the cause of the malfunction due to the overheat of the hoist.

In addition, the present invention provides an effect of preventing the deterioration of insulation capability of the hoist and allowing the hoist to operate only at a safe temperature to ensure stable operation.

In addition, the embodiments of the present invention are intended to illustrate, various modifications, changes, replacements and additions will be possible to those skilled in the art through the spirit and scope of the appended claims, such modifications and modifications belong to the following claims Should be seen.

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

FIG. 2 is a diagram illustrating a temperature display unit of the driving controller of FIG. 1.

3 is a flow chart for explaining the operation of the elevator apparatus according to an embodiment of the present invention.

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

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

An embodiment of the present invention includes a controller 100, a hoist 200, and a temperature detector 300.

Here, the control unit 100 includes a power supply unit 110, a motor driving unit 120, a transformer 130, a power supply unit 140, a main power supply unit 150, and a driving control unit 160. The motor driver 120 includes a rectifier 121, a capacitor 122, a regenerative resistor 123, and an inverter 124. In addition, the temperature detector 300 includes a temperature sensor 310, a filter 320, and an A / D (Analog Digital, Analog / Digital) converter 330.

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

The motor driver 120 has a structure including an inverter 124. The inverter 124 uses a power conversion element such as an Insulated Gate Bipolar Transistor (IGBT), an Intelligent Power Module (IPM), or the like.

The inverter 124 generates an alternating current having an arbitrary voltage and frequency that is varied by switching the DC voltage generated by the rectifying unit 121 and supplies the alternating current to the motor 210. Accordingly, the motor 210 is driven at a variable speed by the current applied from the inverter 124.

The capacitor 122 and the regenerative resistor 123 are connected between the rectifier 121 and the inverter 124. Here, the capacitor 122 smoothes the pulsating DC voltage applied from the rectifier 121. The regenerative resistor 123 consumes power that is regenerated during the regenerative operation of the hoist 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 so that a current flows in the regenerative resistor 123.

The transformer 130 compensates for the voltage level lowered in the power supplied from the power supply unit 11. The power supply unit 140 charges the capacitor 122 to supply power to the inverter 124. In addition, the main power supply unit 150 receives the charged power from the power supply unit 140, and supplies an operating voltage to the temperature detector 300 and the driving controller 160.

The driving controller 160 controls the driving of the elevator car in response to the power applied from the main power supply 150. That is, the driving controller 160 stores and controls information for determining whether there is an abnormality of the elevator, information for switching the driving mode according to the elevator state, driving method information corresponding to the driving mode, and the like. For example, when the abnormality of the elevator is detected by the overheating of the hoist 200, the driving controller 160 may adjust the running speed, the stop state, and the power supply state of the car.

The driving controller 160 determines an operation control parameter of the elevator when an abnormal signal due to heat generation of the hoist 200 is detected from the temperature detector 300. Here, as the driving control parameters, the speed of the car, the acceleration of the car, the deceleration of the car, the jerk of the car, the door opening time (door closing time), the door opening speed, the door closing speed, power supply Status, sudden braking status and call allocation.

Here, the door opening time is the time from the door opening to the automatic closing of the door without operating the door closing button. The number of call assignable units is a constraint when allocating a car to a platform call when a plurality of cars are running controlled as a group.

In addition, the driving controller 160 displays the digital value applied from the analog / digital (A / D) converter 330 to the outside. Accordingly, the external manager can visually recognize the temperature caused by the overheating of the hoisting machine 200 and check it.

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

In addition, the hoist 200 is wound around the rope through the drive of the motor 210 to move each elevator car. In this case, the motor 210 is operated by receiving driving power from the motor driver 120.

In addition, when the load balance between the car and the counterweight is unbalanced for a long time or driven for a long time in a high acceleration / deceleration or speed, the temperature of the hoist 200 increases.

Accordingly, the temperature detector 300 according to the embodiment of the present invention receives power from the main power supply unit 150 to sense and measure the temperature of the hoist 200 in real time and transmits it to the driving controller 160.

In this case, the temperature sensor 310 of the temperature detector 300 may be formed of a device such as a positive temperature coefficient (PTC) thermistor. The temperature sensor 310 may output an analog value for the measured temperature.

The temperature sensor 310 may be attached to a portion close to the stator winding of the hoist 200. Therefore, the temperature sensor 310 can detect the temperature of the hoist 200 without being affected by the rotor of the hoist 200.

The filter 320 filters the noise of the analog value applied from the temperature sensor 310. In addition, the A / D (Analog Digital) converter 330 converts an analog value applied from the filter 320 into a digital value and outputs the digital value to the driving controller 160.

In the embodiment of the present invention, the temperature sensor 310 is included in the hoist 200, and the filter 320 and the A / D converter 330 are described as an example of being provided outside of the controller 100. . 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 diagram illustrating the temperature display unit 161 of the driving controller 160 of FIG. 1.

The driving controller 160 includes a temperature display unit 161 for displaying the temperature detected by the temperature sensor 310 to the outside. The temperature display unit 161 includes a lamp 162 for lighting the detected temperature condition in a color corresponding to the temperature level.

The temperature display unit 161 includes a display unit 163 for displaying the detected temperature numerically. The display unit 163 displays the detected temperature numerically including the seven segment part. For example, when the number “-40” is displayed on the display unit 163, the detected temperature of the hoist 200 is -40 ° C.

3 is a flow chart for explaining the operation of the elevator apparatus according to an embodiment of the present invention.

The method for controlling the operation of the hoist 200 in the controller 100 in response to the temperature detected by the temperature detector 300 is as described in Table 1 below.

order	Lamp color	Temperature condition	Hoist action
One	Colorless	Standard temperature -40 ℃	Normal operation
2	green	Standard temperature -30 ℃	Normal operation
3	yellow	Standard temperature -20 ℃	Normal operation
4	Orange	Standard temperature -10 ℃	Stop after last floor
5	Red	Reference temperature	Sudden stop, power off

For example, when the temperature detected by the hoist 200 is less than or equal to the reference temperature of −40 ° C. (step S1), the lamp 162 is lit “colorless”, and the temperature detected by the display unit 163 on the right is in the form of a number. In this case, since the temperature condition of the hoist 200 is included in the normal range, the hoist 200 operates normally.

When the temperature detected by the hoist 200 falls within the range of the reference temperature of -30 ° C or lower to more than -40 ° C (step S3), the lamp 162 is turned on in "green" color, and the display unit 163 on the right side is turned on. The detected temperature is displayed in numerical form. (Step S4) In this case, since the temperature condition of the hoist 200 is included in the normal range, the hoist 200 operates normally.

In addition, when the temperature detected by the hoist 200 falls within the range of the reference temperature of -20 ° C or lower to more than -30 ° C (step S5), the lamp 162 is turned on in a "yellow" color, and the display unit 163 on the right side is turned on. ) Is displayed in numerical form. (Step S6) In this case, since the temperature condition of the hoist 200 is included in the normal range, the hoist 200 operates normally.

However, when the temperature detected by the hoist 200 falls within the range of the reference temperature of -10 ° C or lower to more than -20 ° C (step S7), the lamp 162 is turned on in "orange" color and the display unit 163 on the right side is turned on. The detected temperature is displayed in numerical form. (Step S8) In this case, since the temperature condition of the hoist 200 is included in the "warning" range, the hoist 200 is the lowest layer (the floor closest to the elevator driving direction). Stop after driving.

In addition, when the temperature detected by the hoist 200 is greater than the reference temperature -10 ° C (step S9), the lamp 162 is lit in a "red" color, and the temperature detected by the display unit 163 on the right is in the form of a number. In this case, since the temperature condition of the hoist 200 is included in the "dangerous" range, the hoist 200 is suddenly stopped and the power is cut off.

It should be understood that the exemplary embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

Claims (10)

1. A hoist which lifts and lowers the car by the driving force of the motor;

   A temperature detector for detecting a temperature of the hoist and outputting temperature detection information; And

   And a drive controller for controlling the drive of the hoist according to the output of the temperature detector and outputting the temperature detection information to the outside.
2. The method of claim 1, wherein the temperature detector

   A temperature sensor detecting a temperature of the hoist;

   A filter for filtering the output of the temperature sensor; And

   And an A / D converter for converting the analog value output from the filter into a digital value.
3. The elevator apparatus according to claim 2, wherein the temperature sensor is attached adjacent to the stator winding of the hoisting machine.
4. The elevator apparatus according to claim 1, wherein the drive control unit further comprises a temperature display unit displaying the temperature detection information detected by the temperature detection unit.
5. The method of 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 by numbers.
6. The elevator apparatus according to claim 1, wherein the drive control unit controls the drive of the hoist differently in response to a temperature level of the temperature detection information.
7. The method of claim 6, wherein the drive control unit

   When the detected temperature is less than the first level, the hoist is controlled in normal operation, and when the detected temperature exceeds the first level and is less than the second level, the hoist is moved to the bottom layer and stopped, and the detected temperature Is greater than the second level, the elevator device characterized in that the suspension of the hoist and shut off the power supply.
8. 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 method of claim 8, wherein the control unit

   A main power supply unit supplying an operating voltage to the driving control unit and the temperature detection unit; And

   Elevator device comprising a motor drive for providing a drive signal to the motor.
10. The method of claim 9, wherein the motor driving unit

    A rectifying unit rectifying an AC voltage applied from a power supply unit and converting the AC voltage into a DC voltage;

    An inverter supplying a driving current to the motor in response to the DC voltage;

    A condenser connected between the rectifier and the inverter to smooth the output of the rectifier; And

    Elevator device comprising a regenerative resistor connected between the rectifier and the inverter.

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