KR20000004173A - Calibrating method of action range for air conditioner blade - Google Patents

Abstract

PURPOSE: An action range calibrating method of an air conditioner blade is provided to lead the efficient dispersion of cool air if an air conditioner is driven for a long time. CONSTITUTION: The control method of an air conditioner is formed by the steps of:revolving a stepping motor(40) for revolving a blade(70); moving the blade(70) to the initial position by controlling the stepping motor(40) if the blade(70) revolved by the stepping motor(40) is not revolved by a fixing bar(80) any more; and revolving the blade(70) within a pre-set range from the initial position by controlling the stepping motor(40) according to the data of the action range stored in a memory unit(31) if the blade(70) moves to the initial position.

Description

A method for compensating the active zone of blades of air-conditioner

The present invention relates to a control method of an air conditioner, and more particularly, to a method of correcting an operating range of an air conditioner blade which induces efficient dispersion of cold air by periodically correcting deviation of an operating range of a blade generated when a long time of driving an air conditioner.

In general, an air conditioner is a device that comfortably maintains a room temperature by using latent heat of evaporation of refrigerant gas according to a refrigeration cycle of a compressor, a condenser, an expansion valve, and an evaporator.

That is, when the compressor compresses the refrigerant gas and raises the pressure and temperature of the refrigerant gas to the saturation pressure, the condenser absorbs the heat of the refrigerant gas of high temperature and high pressure by using water or air to condense and liquefy the refrigerant gas. . The refrigerant gas condensed and liquefied in this way has a low temperature and pressure due to the throttling action of the expansion valve, and the refrigerant gas evaporates in the evaporator to heat-exchange the indoor air to keep the indoor temperature comfortable.

4 is a view showing a general package air conditioner which is one type of air conditioner operating as described above, FIG. 4A is a front view of the package air conditioner, and FIG. 4B is a side view of the package air conditioner.

As shown in the figure, a lower portion of the air conditioner main body 200 is formed with a suction port 210 for suctioning the indoor air, the inside of the suction port 210, the evaporator 250 for heat-exchanging the cooled indoor air is It is mounted, the upper portion of the main body 200 is formed with a discharge port 220 for discharging the cold air heat exchanged in the evaporator 250 into the room.

Meanwhile, a blower fan 230 is installed at the inner center of the air conditioner main body 200 to suck the indoor air through the suction port 210 and blow air cooled in the evaporator 250 to the room through the discharge port 220. The front of the main body 200, the operation panel 240 is installed so that the user can control the air conditioner.

Therefore, when the user drives the air conditioner through the operation panel 240, the blowing fan 230 mounted inside the main body 200 is driven to suck the indoor air through the suction port 210. At this time, the sucked indoor air Heat exchange in the evaporator 250 is blown into the room through the discharge port 220.

On the other hand, the discharge direction of the cold air blown into the room is changed by the rotation of the blade 221 mounted to the discharge port 220. That is, as shown in Figure 5 a plurality of blades 221 is rotatably fixed to the hinge 222 to the engaging portion 241 of the holder 240, so that each blade 221 can be interlocked with each other The coupling portion 231 of the linkage 230 is coupled to the hinge 223.

In addition, a gear tooth 224 is formed on the rear surface of any one of the blades 221, and the gear tooth 224 is engaged with the drive gear 251 coupled to the rotating shaft of the stepping motor 250. Therefore, when the stepping motor 250 is driven, the connecting rod 230 flows up and down, and each blade 221 rotates about the hinge 223 by the vertical flow of the connecting rod 230.

However, the rotation range of the blade 221 at the forward rotation of the stepping motor 250 is different from the mechanical resistance acting when the stepping motor 250 rotates forward and the magnitude of the mechanical resistance acting when the reverse rotation is different. The range of rotation in reverse rotation also changes. Therefore, when the air conditioner is driven for a long time, the blade 221 rotates outside the set operating range.

That is, since the stepping motor 250 rotates forward or backward by a predetermined angle according to the pulse voltage applied regardless of the current position of the blade 221, the blade may be changed due to a difference in mechanical resistance applied during forward and reverse rotation. 221 is driven out of the set operating range. As such, when the blade 221 is driven out of the set operating range, there is a problem that efficient discharge of cold air is not performed.

Accordingly, the present invention has been invented to solve the above problems, and the method for correcting the operating range of the air conditioner blade to induce efficient dispersion of cold air by periodically correcting deviation of the operating range of the blade generated when the air conditioner is driven for a long time. Its purpose is to provide.

In order to achieve the above object, the present invention provides a control method of an air conditioner in which a plurality of blades are rotatably mounted on a stator that serves as a stopper, wherein a predetermined time has elapsed since the stepping motor for rotating the blades is driven. If the blade is rotated by the stepping motor in the first step and the blade is no longer rotated by the stator in the first step, the stepping motor is controlled according to the operating range data stored in the memory unit. In a second step of moving the initial position to the initial position, and when the blade moves to the initial position in the second step to control the stepping motor in accordance with the operating range data stored in the memory unit to move the blade within the predetermined range from the initial position And a third step of rotating.

Figure 1 schematically shows a blade operating range correction apparatus to which the present invention is applied

Block diagram shown,

2 is a flowchart showing a blade operating range correction method according to the present invention;

3 is a view for explaining a correction method according to the present invention;

4 is a view showing a typical packaged air conditioner,

4A is a front view of a packaged air conditioner,

4B is a side view of a packaged air conditioner,

5 is a view for explaining an operation method of a conventional air conditioner blade.

Explanation of symbols for main parts of the drawings

10: key input unit 20: signal receiving unit

30 control unit 31 memory unit

40: stepping motor 50: overload detection unit

60: timer

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

Figure 1 is a block diagram schematically showing a blade operating range correction apparatus to which the present invention is applied, which receives the control signal output from the remote control and the key input unit 10 mounted on the main body so that the user can control the operation of the air conditioner The signal receiving unit 20 is connected to the control unit 30, respectively, and a timer 60 for counting a predetermined time is connected to the control unit 30.

The controller 30 rotates the stepping motor 40 which rotates the blade according to a user's control command applied through the key input unit 10 or the signal receiving unit 20, to reverse and rotate the cold air. The stepping motor 40 rotates forward or reverse by a predetermined angle according to the applied pulse voltage.

Meanwhile, the overload detection unit 50 detects an overload generated from the stepping motor 40 and informs the control unit 30, and the control unit 30 stops driving the stepping motor 40 according to the output signal of the overload detection unit 50. Control to correct the operating range of the blade.

The blade 70 rotated by the stepping motor 40 is rotatably fixed to the engaging portion 81 of the holder 80 by a hinge 71 as shown in FIG. 3, each blade 70 is The hinge portion 72 is coupled to the coupling portion 91 of the linkage 90 so as to interlock with each other. A gear tooth 73 is formed on the rear surface of any one of the blades 70, which meshes with a drive gear 41 coupled to the rotational shaft of the stepping motor 40.

Next, the air conditioner blade operating range correction method according to the present invention applied to the blade operating range correction apparatus configured as described above will be described with reference to FIG. 2.

When the user selects the wind direction adjustment mode for driving the air conditioner through the key input unit 10 or the remote control (101) and varying the discharge direction of the cold air, the control unit 30 rotates the stepping motor 40 forward and reverse to rotate the blade ( The timer 60 is driven to rotate the 70 and count a predetermined time.

When the timer notifies that the predetermined time, for example, 10 minutes has elapsed, the controller 30 rotates the stepping motor 40 forward (102 to 103). If the blade 70 rotated by the stepping motor 40 is no longer rotated by the stopper 80 serving as a stopper as shown in FIG. 3, an overload occurs in the stepping motor 40 (104). If overload occurs, the controller 30 controls the stepping motor 30 according to the operation range data stored in the memory 31 to move the blade 70 to the initial position (105).

That is, the stepping motor 40 is reversely rotated during the time when a predetermined number of pulse voltages are applied. As described above, when the blade 70 reaches the initial position by rotating the stepping motor 40 reversely, the control unit 30 performs a predetermined number of pulse voltages according to the operation range data stored in the memory unit 31. By rotating the stepping motor 40 reversely and forwardly, the discharge direction of the cold air is varied (106). After 10 minutes, the above process is repeated to correct the operating range of the blade 70.

As described above, the present invention periodically corrects the deviation of the operating range of the blade generated when the air conditioner is driven for a long time due to the difference in mechanical resistance that is applied during forward and reverse rotation of the stepping motor. Can be derived.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be defined only by the appended claims.

Claims (1)

In a control method of an air conditioner rotatably mounted to a stator that acts as a stopper, a plurality of blades, the stepping motor 40 when a predetermined time has elapsed since the stepping motor 40 for rotating the blade 70 is driven. In the first step (101 to 103) for forward rotation and the blade 70 rotated by the stepping motor 40 in the first step is no longer rotated by the holder 80 to the memory unit 31 A second step (104 to 105) of moving the blade 70 to the initial position by controlling the stepping motor 40 according to the stored operating range data, and the blade 70 is moved to the initial position in the second step And a third step 106 of controlling the stepping motor 40 according to the operating range data stored in the memory unit 31 to rotate the blade 70 within a preset range from the initial position. Ugh Air conditioning operating range correction method of the blade.