KR20120073916A - Driving method of disk of humidification air cleaner - Google Patents

Abstract

The present invention relates to a method for driving a disc of a humidifying air purifier, and in particular, a humidification including a disc rotating in a state of being partially locked in a water tank inside a case of the present invention, and a motor connected to an axis of the disc to rotate the disc. In the disk driving method of the air cleaner, a driving process of starting the rotation of the disk by applying a driving signal of a first set pps (pulse per second) so that the motor rotates in the forward direction and applying a driving signal to the motor for a predetermined time. And a failure checking process of applying a drive signal of the first set pps so that the motor rotates in the reverse direction when the disc is not rotated, and the torque generated from the motor by the drive signal of the first set pps is The torque exceeds the torque required to start the motor when it is stopped.

Description

Driving method of disk of humidification air cleaner

The present invention relates to a method of effectively driving a disk of a humidified air purifier.

A humidifying air purifier is a device that simultaneously performs an air cleaning function and a humidification function. In particular, the disk-type humidifying air purifier has a structure in which a part of the disk is locked and rotated in the water tank and the airflow generated by the blower fan passes through the disk, thereby simultaneously performing air cleaning and humidification.

1 is a view showing a schematic configuration of a humidified air purifier.

Referring to Figure 1, it may be configured to include a water tank 10, a humidifying disk 20 and the blowing fan (30). Moreover, it is preferable that dry air passes through a filter etc. and is clean air.

Humidification disk 20 is a plurality of disks are connected in the axial direction to form a cylindrical shape of the entire shape. The disk is rotated with a part of the disk surface immersed in the water tank (10) filled with water.

The blowing fan 30 generates airflow through rotation, and indoor air is sucked through the suction grille of the case by the generated airflow. The sucked indoor air is cleaned through the filter unit and then discharged into the room via the discharge grill of the case via the humidifying disk 20.

The filtered indoor air passes through the disks of the humidifying disk 20 to obtain moisture from the water film buried on the surface of the humidifying disk 20.

By the way, the humidifying discs are of considerable weight when water is obtained from the bath, so the motor that rotates the humidifying discs is required to be able to generate considerable torque.

An object of the present invention is to propose a method capable of effectively driving a disk of a humidified air purifier at startup.

Disc drive of the humidifier air cleaner comprising a disk rotating in a state in which the part is locked in the water tank in the case according to an embodiment of the present invention for solving the above problems and a motor connected to the shaft of the disk to rotate the disk. The method includes applying a drive signal of a first set pps (pulse per second) to start the rotation of the disk by applying a drive signal of the first setting pps so that the motor rotates in a forward direction, and applying a drive signal to the motor for a predetermined time and the disk is not loaded. A failure checking process of applying a driving signal of the first set pps to rotate the motor in a reverse direction when the motor rotates, and the torque generated from the motor by the driving signal of the first set pps is generated in the motor stopped state. Torque required for starting.

The starting process may include the first setting step of applying the driving signal of the first setting pps to the motor and the driving signal of the first setting pps for the preset time, so that the motor rotates forward. pps or more A second start-up step of applying a drive signal of pps to the motor.

The failure checking process includes a rotation sensing step of sensing whether the disk is rotated after applying a driving signal to the motor for a preset time and driving the first set pps so that the motor rotates in reverse if the rotation of the disk is not detected. And a reverse rotation step of applying a signal to the motor.

The failure checking process may further include a notification step of notifying the device failure when the disc is not rotated after the reverse rotation step is performed for a preset time.

According to the disk driving method of the humidifying air purifier of the present invention by the above-mentioned solution, it is possible to rotate the disk with a high torque by applying a low pps drive signal at the beginning of the drive.

Moreover, according to the disk drive method of the humidification air purifier of this invention by the said solving means, the removal of the disk drive gear can be solved by the simple method.

1 is a view showing a schematic configuration of a humidified air purifier.
2 is a diagram illustrating a configuration of a motor driver for increasing torque of a motor for driving a disk of the humidifying air purifier of the present invention.
FIG. 3 is a diagram illustrating the torque required for starting the disc of the humidifier and the output torque of the motor.
Figure 4 is a flow chart showing the performance flow of the disk drive method of the humidified air purifier of the present invention.
Figure 5 is a flow chart showing the detailed flow of the startup process of the humidifier air purifier of the present invention.
6 is a flowchart illustrating a detailed flow of a failure checking process of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing in detail the operating principle of the preferred embodiment of the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and like parts are denoted by similar reference numerals throughout the specification.

In addition, when a part is said to "include" a certain component, this means that it may further include other components, except to exclude other components unless otherwise stated.

Hereinafter, the humidifying disk will be referred to as a disk.

2 is a diagram illustrating a configuration of a motor driver for increasing torque of a motor for driving a disk of the humidifying air purifier of the present invention.

Referring to FIG. 2, a zener diode circuit may be added to the motor driver to improve torque of a motor driving a disc of the humidifying air purifier of the present invention.

If the maximum torque of a 35 phi stepping motor is 1 kgf-cm, adding a Zener diode circuit will result in a torque improvement of about 10%, producing a torque of 1.1 kgf-cm.

In other words, if torque improvement is obtained through a zener diode circuit, torque sufficient for rotation of the disk can be obtained in a normal state.

However, when starting in a situation where the disc has been stopped, the magnitude of the required torque may be different from that of the generally rotating situation.

In the analysis of the stop state, since the maneuvering state in the stop state, the friction force is stronger than the rotation state. In addition, the amount of moisture contained in the disk is large, and the surface tension generated at the surface also acts more strongly.

Therefore, if the driving signal is transmitted to the stepping motor by the same level as the rotation, the motor may not rotate due to the lack of torque or the driving gear may be out of step.

In particular, the synchronous motor has a relatively large output torque, so the problem is less. However, in the case of a stepping motor having an advantage in control convenience and noise, the output torque is relatively small, which can be a big problem at start-up.

FIG. 3 is a diagram illustrating the torque required for starting the disc of the humidifier and the output torque of the motor.

Referring to FIG. 3, the torque required for starting the disc is varied according to the pulse rate of the drive signal, and the output torque of the motor also varies according to the pulse rate of the drive signal.

The pulse rate is hereinafter expressed as pps (pulse per second).

Referring to FIG. 3, a pull out torque, which is a torque required to start a motor in a stopped state, is formed higher than a pull in torque, which is an output torque of the motor, in most pps.

Therefore, it is difficult to start smoothly.

However, referring to FIG. 3, since the change rate of the pull-out torque and the change rate of the pull-in torque are different, the pull-in torque may be larger than the pull-out torque in the low pps region.

Therefore, when the motor is driven by applying a drive signal of low pps at the time of starting, stable starting is possible.

In addition, after the start is performed stably, the torque required for rotation decreases, and a sufficient rotational speed of the disk is required for smoothing the humidification function. Therefore, it is preferable to apply a driving signal of higher pps to the motor for driving.

The disk drive method of the humidifier air cleaner of the present invention can perform stable startup and failure check of the disk by using the above characteristics.

Figure 4 is a flow chart showing the performance flow of the disk drive method of the humidified air purifier of the present invention.

Referring to FIG. 4, the disk driving method of the humidified air purifier of the present invention may be performed including a startup process 100 and a failure confirmation process 200.

The disk driving method of the humidifying air purifier of the present invention may be applied to a humidifying air purifier including a disk rotating in a state of being partially locked in a water tank inside the case and a motor connected to the shaft of the disk to rotate the disk.

In the startup process 100, the rotation of the disk may be started by applying a drive signal of a first set pulse per second (pps) so that the motor rotates in the forward direction. In particular, the first set pps is the pps value of the region where the pull-in torque is greater than the pull-out torque. That is, it is possible to start by forming a state capable of exhibiting a high torque.

In the failure checking process 200, a driving signal may be applied to the motor for a preset time, and the driving signal of the first set pps may be applied to rotate the motor in the reverse direction when the disc is not rotated. That is, when the disk does not rotate even after applying the drive signal for a predetermined time, the home position can be attempted by rotating the motor counterclockwise with a high torque in order to check whether the failure is caused by the gearing out. If the gear is returned to the original position by the reverse rotation, the disc will be reversed. If the gear is not reversed, the disc may be recognized as a failure caused by other factors and a failure notification may be performed.

Figure 5 is a flow chart showing the detailed flow of the startup process of the humidifier air purifier of the present invention.

Referring to FIG. 5, the startup process of the present invention may include a first startup step 101 and a second startup step 105.

In the first start-up step 101, a driving signal of the first set pps may be applied to the motor so that the motor rotates forward. That is, the motor can be driven at a low pps to output the torque required for starting.

The drive signal of the first start-up step 101 is applied 103 for a preset time so that the disk is stabilized in the rotational state.

In the second start-up step 105, after applying the driving signal of the first set pps for a preset time, the driving signal of the first set pps or more pps may be applied to the motor. The low pps drive signal is due to the low rotational speed of the disc, making the humidification function insufficient.

As an example of the start-up process, in order for the humidifying function of the humidifier air purifier to be sufficiently exhibited, the rotation speed of the disk should be 5 rpm and the drive signal applied to the motor should be about 600 pps to have this rotation speed. In contrast, for the pull-in torque to be higher than the pull-out torque, the drive signal must be 100pps or less.

In this case, the execution process is as follows.

In the first startup step 101, a drive signal of 100pps is applied to the motor to attempt to start the motor. After the driving signal of 100pps is applied for 5 seconds, the driving signal of 588pps is applied to the second start-up step 105 to facilitate the humidification function.

6 is a flowchart illustrating a detailed flow of a failure checking process of the present invention.

Referring to FIG. 6, the failure checking process of the present invention may be performed by including a rotation sensing step 201 and a reverse rotation step 203, and may further include a notification step 207.

In the rotation detection step 201, the driving signal may be applied to the motor for a preset time to detect whether the disk is rotated.

In the reverse rotation step 203, if the rotation of the disk is not detected, the driving signal of the first set pps may be applied to the motor so that the motor rotates in the reverse direction. If the cause of the disk failure is gear outage, this is to solve simply.

That is, in the case of gear disassembly, when the rotor is rotated with a strong torque in the reverse direction, the dislodged gear is used.

In the notification step 207, if the disc is not rotated even after performing the reverse rotation step for a preset time, the device failure may be notified to induce a user or an administrator to repair the humidified air cleaner.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the art that various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be apparent to those skilled in the art.

10: tank 20: humidification disc
30: blower fan

Claims (4)

In the disk driving method of the humidifier air cleaner comprising a disk rotating in a state in which a part of the case is locked in the case and a motor connected to the shaft of the disk to rotate the disk,
A startup process of applying a drive signal of a first set pps (pulse per second) to start the rotation of the disk so that the motor rotates in the forward direction; And
Applying a driving signal to the motor for a preset time and applying a driving signal of the first set pps so that the motor rotates in the reverse direction when the disk is not rotating;
The torque generated in the motor by the drive signal of the first set pps is greater than or equal to the torque required for starting the motor in the stopped state.
The method of claim 1, wherein the starting process
A first starting step of applying a drive signal of the first set pps to the motor such that the motor rotates forward; And
And applying a driving signal of the first set pps or more pps to the motor when the driving signal of the first set pps is applied for a predetermined time period.
The method of claim 1, wherein the failure checking process
A rotation sensing step of sensing whether the disk is rotated after applying a driving signal to the motor for a preset time; And
And if the rotation of the disc is not detected, applying a driving signal of the first set pps to the motor such that the motor rotates in reverse.
The method of claim 3, wherein the failure checking process is performed.
And notifying the device failure when the disc is not rotated after performing the reverse rotation step for a preset time.

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