KR100197678B1 - Air direction control device and its method of airconditioner - Google Patents

Abstract

The present invention relates to a wind direction control device and a method for controlling an air conditioner to maintain a constant indoor temperature, and the present invention relates to an air inlet for sucking indoor air and an indoor heat exchange for indoor air sucked through the inlet. An air conditioner having a heat exchanger, a discharge port for discharging air exchanged by the indoor heat exchanger, and a wind direction blade for adjusting the wind direction of the air discharged through the discharge hole, wherein a key signal for driving the wind direction blade is inputted. Driving means, control means for outputting a driving pulse to control the moving speed of the wind vane according to the key signal inputted by the driving means, and the wind pulse receiving the driving pulse output from the control means. It consists of a stepping motor driving means for driving the stepping motor to drive the wind direction blade By the movement of the speed change control is the effect of being able to maintain a constant temperature room full.

Description

Wind direction control device and method of air conditioner

1 is a perspective view showing an indoor unit of a general air conditioner.

2 is a side cross-sectional view of FIG.

3 is a diagram showing a room air distribution diagram of a conventional air conditioner.

4 is a control block diagram of a wind direction control apparatus of an air conditioner according to an embodiment of the present invention.

5A to 5C are flow charts showing the air vane control operation procedure of the air conditioner according to the present invention.

6 is a waveform diagram showing driving pulses of a stepping motor according to the present invention.

7 is a view showing the indoor air distribution of the air conditioner according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

3: inlet port 5: outlet port

7: wind vane 9: indoor heat exchanger

11: indoor fan 20: current source

25: operation operation means 30: control means

35: room temperature detection index 40: compressor driving means

41: compressor 50: stepping motor driving means

51: stepping motor 60: fan motor driving means

61: indoor fan motor 70: display means

The present invention relates to a wind direction control apparatus and a method of an air conditioner to control the wind vane for controlling the direction of the discharged air to maintain a constant indoor temperature.

In general, an air conditioner includes a heating device that warms indoor cold air and supplies it to a room, and a cooling device that supplies cold indoor hot air to a room.

In addition, there is also a cooling and heating device that combines the cooling function and the heating function, a situation that includes a clean function for cleaning the contaminated indoor air.

1 shows an indoor unit of a cooling device (commonly referred to as an air conditioner) that performs a cooling function among the air conditioners described above.

Of course, the cooling device includes an outdoor unit not shown.

As shown in FIG. 1, reference numeral 1 denotes an indoor main body (hereinafter referred to as a main body) of an air conditioner, and an inlet 3 for inhaling indoor air is formed on the front portion of the main body 1. In the lower part of the front surface of the main body 1, a discharge port 5 for discharging air (cold air) heat-exchanged by an indoor heat exchanger to be described later is formed.

The discharge port 5 is equipped with a wind direction control blade 7 (hereinafter referred to as a wind direction wing) for controlling the direction of air discharged into the room through the discharge port 5.

On the other hand, the wind vane (7) is fixed to the shaft of the stepping motor operating in accordance with a drive signal, that is, a pulse signal having a predetermined frequency output from the control unit not shown in the up and down direction in accordance with the rotational drive of the stepping motor Move.

FIG. 2 is a side cross-sectional view of FIG. 1, and the same parts as in FIG. 1 are denoted by the same reference numerals and redundant description thereof will be omitted.

As shown in FIG. 2, the interior of the main body 1 has a straight interior at the rear side of the suction port 3 so as to heat-exchange the indoor air sucked through the suction port 3 with cold air by the latent heat of evaporation of the refrigerant. A heat exchanger (9) is mounted, and the lower side of the rear side of the indoor heat exchanger (9) sucks indoor air through the inlet port (3) and at the same time the air heat exchanged by the indoor heat exchanger (9) is discharged. An indoor fan 11 for discharging into the room through (5) is mounted.

In addition, a duct member 13 is installed inside the main body 1 to guide the flow of air sucked through the suction port 3 and discharged to the discharge port 5.

In the air conditioner configured as described above, when a user operates a key provided on a control panel of a remote controller or a main body and inputs a desired driving condition, when the operation switch is turned on, the suction port 3 is operated according to the operation of the indoor fan 11. Indoor air starts to be sucked into the main body (1).

The indoor air sucked into the main body (1) is heat-exchanged with cold air due to the cold refrigerant passing through the indoor heat exchanger (9) and discharged into the room through the discharge port (5).

At this time, a pulse signal having a constant pulse width is output from the control unit so that the stepping motor starts to rotate at a constant speed, and the wind vane 7 mounted on the shaft of the stepping motor is rotated upward or downward according to the rotation of the stepping motor. Move in the direction of

Accordingly, the controller determines the current position of the wind vane 7 by counting the number of pulse signals outputted, and changes the order of the pulse signals output to the stepping motor to change the direction of the wind vane 7. (7) adjusts the direction of the cold air discharged into the room through the discharge port 5 while repeatedly performing the vertical swing operation.

In this manner, however, since the moving speed of the wind vane 7 is constant, the discharge time of the wind vane 7 is the same at the positions A, B, and C shown in FIG. The cold air is discharged only to a part of the upper and lower parts of the room as in the hatched portion of FIG.

Accordingly, the present invention has been made to solve the above problems, an object of the present invention is to control the wind speed of the wind vane variable variable air direction control apparatus of the air conditioner that can maintain a constant indoor temperature To provide a method.

In order to achieve the above object, a wind direction control apparatus for an air conditioner according to the present invention includes an intake port for sucking indoor air, an indoor heat exchanger for exchanging indoor air sucked through the intake port, and air exchanged by the indoor heat exchanger. An air conditioner having a discharge port for discharging and a wind vane for adjusting the direction of air discharged through the discharge port, comprising: driving operation means for inputting a key signal for driving the wind direction blade, and by the driving operation means; Control means for outputting a driving pulse to control the movement speed of the wind vane according to the input key signal, and stepping motor driving means for driving a stepping motor to drive the wind vane by receiving the driving pulse output from the control means; Characterized in that consisting of.

In addition, the wind direction control method of the air conditioner according to the present invention is a wind direction movement step for moving the wind direction blades by outputting a driving pulse to the stepping motor in accordance with the wind direction signal input by the operation operation means, and at the time of movement of the wind direction blades By varying the number of pulses output to the stepping motor to determine the position of the movement of the wind vane, the pulse period applied to the stepping motor according to the movement position of the wind direction blades determined in the position discrimination step It characterized in that the wind vane speed variable step of varying the moving speed of the wind vane.

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

As shown in FIG. 4, the DC power supply unit 20 receives a commercial AC voltage supplied from an AC power input terminal (not shown), converts it into a predetermined DC voltage required for the operation of the air conditioner, and outputs the same. The operation means 25 is configured to input the operating conditions (cooling, cleaning, reservation operation, operation / stop, etc.), the set temperature (Ts), the set air volume, and the set wind direction of the air conditioner desired by the user. A key input section 26 provided with a plurality of function keys on the control panel, and a remote control signal receiver 27 for receiving an infrared signal by key operation of a remote controller (not shown).

In addition, the control unit 30 receives the DC voltage output from the DC power supply unit 20 to initialize the air conditioner, as well as the air conditioner according to the operation condition input by the operation operation unit 25. As a microcomputer for controlling the overall operation of the machine, this control means 30 outputs a drive pulse for variably controlling the moving speed of the wind vane 7.

In addition, the indoor temperature detecting means 35 controls the indoor temperature Tr to the temperature Ts set by the user by the driving operation means 25 to perform the cooling operation of the air conditioner. Detects the temperature (Tr) of the indoor air sucked through) and outputs it to the control means 30, the compressor driving means 40 is the temperature (Ts) set by the user by the operation operation means 25 and The compressor 41 is drive-controlled by receiving a control signal output from the control means 30 according to the difference of the room temperature Tr sensed by the room temperature sensing means 35.

In addition, the stepping motor driving means 50 controls the direction of the cold air discharged through the discharge port 5 in accordance with the wind direction set by the user by the driving operation means 25 and at the same time the wind vane 7 Drive control of the stepping motor 51 by receiving the pulse signal output from the control means 30 so as to vary the Shanghai moving speed of the fan motor, and the fan motor driving means 60 is controlled by the driving operation means 25 by the user. The indoor fan motor 61 controls the rotation speed of the indoor fan motor 61 by receiving a control signal output from the control means 30 so as to blow air (cold air) heat-exchanged by the indoor heat exchanger 9 into the room according to the set air volume. The fan 11 is drive controlled.

The display means 70 displays the operating conditions set by the user by the driving operation means 25 under the control of the control means 30, as well as the room sensed by the room temperature sensing means 35. Displays the temperature Tr and the operating condition of the air conditioner.

Hereinafter, the effect of the wind direction control device and the method of the air conditioner configured as described above will be described.

5A to 5C are flow charts showing the air vane control operation procedure of the air conditioner according to the present invention. In FIGS. 5A to 5CB, S denotes a step.

First, when power is applied to the air conditioner, the DC power supply unit 20 converts a commercial AC voltage supplied from an AC power input terminal (not shown) into a predetermined DC voltage required for driving the air conditioner, thereby controlling each driving circuit and control. Output to the means 30.

Therefore, in step S1, the DC voltage output from the DC power supply means 20 is inputted from the control means 30 to initialize the air conditioner.

At this time, the user operates the key input unit 26 provided on the remote controller or the control panel to input the set temperature Ts, the set air volume, and the set wind direction of the room to be cooled, and then press the operation switch, and the key input unit ( 26) and an operation command and an operation start signal from the remote control signal receiver 27 are input to the control means.

Accordingly, the fan motor driving means 60 receives the control signal output from the control means 30 according to the set air volume input by the driving operation means 25 to control the rotation speed of the indoor fan motor 61. The indoor fan 11 is driven.

When the indoor fan 11 is driven, the indoor air begins to be sucked into the main body 1 through the suction port 3, and the indoor air sucked into the main body 1 passes through the indoor heat exchanger 9. Due to heat exchange with cold air begins to be discharged into the room through the discharge port (5).

At this time, in step S2, the control means 30 determines whether a swing signal (hereinafter referred to as a wind direction swing signal) of the wind vane 7 is input from the key input unit 26 and the remote control signal receiving unit 27, and thus the wind direction. If the swing signal is not input (NO), the process returns to the step S2, and the operation of the step S2 or less is repeated while the air conditioner is kept in the operation standby state.

As a result of the discrimination in step S2, when the wind direction swing signal is input (YES), the flow advances to step S3, and the control means 30 adjusts the discharge direction of the cold air discharged through the discharge port 5. A clockwise driving pulse is outputted to the stepping motor drive means 50 to drive (7).

Therefore, the stepping motor driving means 50 receives the driving pulse output from the control means 30 and rotates the stepping motor 51 so that the wind vane 7 mounted on the shaft of the stepping motor 51 moves. To start.

Accordingly, in step S4, the control means 30 counts the number of drive pulses output to the stepping motor drive means 50 to determine whether the wind vane 7 has reached the A position shown in FIG.

Since the number of pulses when the wind vane 7 reaches the A position is set in advance in the control means 30, the control means 30 counts the number of driving pulses to be output and the wind vane 7 It is possible to determine whether the position A has been reached.

As a result of the discrimination in step S4, when the wind vane 7 does not reach the A position (NO), the flow returns to the step S3, and the control means 30 causes the wind vane 7 to reach the A position. The driving pulse is output to the stepping motor driving means 50 until the operation is repeated, while the number of output driving pulses is counted.

On the other hand, when the determination result in step S4 indicates that the wind vane 7 reaches the A position (YES), the flow advances to step S5, and the control means 30 changes the downward movement speed of the wind vane 7. As shown in FIG. 6, a short period driving pulse in the counterclockwise direction is output to the stepping motor driving means 50. As shown in FIG.

Therefore, the stepping motor driving means 50 receives the short period pulse in the counterclockwise direction output from the control means 30 and rotates the stepping motor 51 so that the wind vane 7 at high speed A and B Start moving to the intermediate position AB.

Accordingly, in step S6, the control means 30 counters the number of short period pulses in the counterclockwise direction output to the stepping motor driving means 50 to see if the wind vane 7 reaches the AB position shown in FIG. Determine.

Of course, the number of pulses when the wind vane 7 reaches the A-B position is also set in advance in the control means 30.

As a result of the discrimination in step S6, when the wind vane 7 does not reach the AB position (NO), the flow returns to step S5, and the control means 30 causes the wind vane 7 to reach the AB position. The stepping motor driving means 50 outputs a short period pulse in the counterclockwise direction until the counterclockwise short period pulses are output, and the operation of step S5 or less is repeated.

On the other hand, when the determination result in step S6 indicates that the wind vane 7 reaches the AB position (YES), the flow advances to step S7, whereby the control means 30 changes the downward movement speed of the wind vane 7. As shown in FIG. 6, the long period drive pulse in the counterclockwise direction is outputted to the stepping motor drive means 50. As shown in FIG.

Therefore, the stepping motor driving means 50 receives the counterclockwise long period pulse output from the control means 30 and rotates the stepping motor 51 so that the wind vane 7 passes the B position at a slow speed. Start to move to BC position, intermediate between B and C.

Accordingly, in step S8, the control means 30 counts the number of counterclockwise long period pulses output to the stepping motor driving means 50 to see if the wind vane 7 reaches the BC position shown in FIG. Determine.

Of course, the number of pulses when the wind vane 7 reaches the B-C position is also set in advance in the control means 30.

As a result of the discrimination in step S8, if the wind vane 7 does not reach the BC position (NO), the flow returns to step S7, and the control means 30 causes the wind vane 7 to reach the BC position. The stepping motor driving means 50 outputs a long period pulse in a counterclockwise direction until the counterclockwise long period pulses are output, and the operation of step S7 or less is repeated.

On the other hand, when the determination result in step S8 indicates that the wind vane 7 reaches the BC position (YES), the flow advances to step S9 and the control means 30 changes the downward movement speed of the wind vane 7. As shown in FIG. 6, a short period driving pulse in the counterclockwise direction is output to the stepping motor driving means 50. As shown in FIG.

Therefore, the stepping motor driving means 50 receives the counterclockwise short period pulse output from the control means 30 and rotates the stepping motor 51 to move the wind vane 7 to the C position at a high speed. To start.

Accordingly, in step S10, the control means 30 counts the number of anti-clockwise short period pulses output to the stepping motor driving means 50 to see if the wind vane 7 reaches the C position shown in FIG. Determine.

Of course, the number of pulses when the wind vane 7 reaches the C position is also set in advance in the control means 30.

As a result of the discrimination in step S10, when the wind vane 7 does not reach the C position (NO), the flow returns to step S9 and the control means 30 causes the wind vane 7 to reach the C position. The stepping motor driving means 50 outputs a short period pulse in a counterclockwise direction until the counterclockwise short period pulses are counted, and the operation of step S9 or less is repeated.

On the other hand, when the determination result in step S10 indicates that the wind vane 7 reaches the C position (YES), the flow advances to step S11, and the control means 30 changes the upward movement speed of the wind vane 7. As shown in FIG. 6, a short period driving pulse in a clockwise direction is output to the stepping motor driving means 50. As shown in FIG.

Therefore, the stepping motor driving means 50 receives the clockwise short period pulse output from the control means 30 and rotates the stepping motor 51 to move the wind vane 7 to the BC position at a high speed. To start.

Accordingly, in step S12, the control means 30 counts the number of clockwise short period pulses output to the stepping motor driving means 50 to determine whether the wind vane 7 has reached the BC position shown in FIG. do.

As a result of the discrimination in step S12, when the wind vane 7 does not reach the BC position (NO), the flow returns to step S11 and the control means 30 causes the wind vane 7 to reach the BC position. Until the stepper motor driving means 50 outputs a short period pulse in the clockwise direction, the operation of step S11 or less is repeated.

On the other hand, when the determination result in step S12 indicates that the wind vane 7 reaches the BC position (YES), the flow advances to step S13, and the control means 30 changes the upward movement speed of the wind vane 7. As shown in FIG. 6, a long period drive pulse in the clockwise direction is output to the stepping motor drive means 50. As shown in FIG.

Accordingly, the stepping motor driving means 50 receives the clockwise long period pulse output from the control means 30 and rotates the stepping motor 51 so that the wind vane 7 passes through the B position at a low speed to the AB. Start moving to the location.

Accordingly, in step S14, the control means 30 counts the number of clockwise long period pulses output to the stepping motor driving means 50 to determine whether the wind vane 7 has reached the AB position shown in FIG. do.

As a result of the discrimination in step S14, when the wind vane 7 does not reach the AB position (NO), the flow returns to step S13 and the control means 30 causes the wind vane 7 to reach the AB position. The step S13 or less is repeatedly performed while outputting a long period pulse in a clockwise direction to the stepping motor driving means 50 until the step is performed.

On the other hand, when the determination result in step S14 indicates that the wind vane 7 reaches the AB position (YES), the flow advances to step S15 and the control means 30 changes the upward movement speed of the wind vane 7. As shown in FIG. 6, a short period driving pulse in a clockwise direction is output to the stepping motor driving means 50. As shown in FIG.

Therefore, the stepping motor driving means 50 receives the clockwise short period pulse output from the control means 30 and rotates the stepping motor 51 to move the wind vane 7 to the A position at a high speed. To start.

Accordingly, in step S16, the control means 30 counts the number of clockwise short period pulses output to the stepping motor driving means 50 to determine whether the wind vane 7 has reached the A position shown in FIG. do.

As a result of the discrimination in step S16, if the wind vane 7 does not reach the A position (NO), the flow returns to step S15 and the control means 30 causes the wind vane 7 to reach the A position. Until the stepper motor driving means 50 outputs a short period pulse in the clockwise direction, the operation of step S15 or less is repeated.

On the other hand, if the wind vane 7 reaches the A position (YES) as a result of the determination in step S16, the control means 30 moves to the key input unit 26 or the remote control receiver 27. If the operation stop signal is not input (NO), the flow returns to the step S5, and the wind vane 7 continuously repeats the reciprocating swing operation while varying the Shanghai moving speed. The operation of step S5 and below is repeated.

Therefore, as in the hatched portion of FIG. 7 due to the change in the moving speed of the wind vane 7 according to the east and west positions, the entire indoor temperature can be kept constant with an even indoor distribution of cold air discharged from the discharge port 5. Will be.

As a result of the determination in step S17, when the operation stop signal is input (YES), the wind vane 7 reciprocates by blocking the drive pulse signal output from the control means 30 to the stepping motor drive means 50. Ends the operation while stopping the swing operation.

According to the wind direction control device and the method of the air conditioner according to the present invention as described above, there is an excellent effect that the entire room temperature can be kept constant by variable control of the moving speed of the wind direction blade.

Claims (3)

An air inlet for sucking indoor air, an indoor heat exchanger for exchanging indoor air sucked through the inlet, a discharge port for discharging air exchanged by the indoor heat exchanger, and a wind direction for controlling the direction of the air discharged through the discharge port An air conditioner having wings, comprising: driving operation means for inputting a wind direction swing signal for driving the wind direction blade; and a wind direction swing signal is inputted according to the position of the wind direction wing when a wind direction swing signal is inputted from the driving operation means. Control means for outputting a drive pulse to swing the wind vane while varying the speed, and stepping motor driving means for swing driving the wind vane by driving the stepping motor in accordance with the drive pulse output from the control means Wind direction control device of the air conditioner. The apparatus of claim 1, wherein the control unit determines the position of the wind vane by counting the number of driving pulses output to the stepping motor driving unit. According to the wind direction swing signal inputted by the driving operation means, the driving pulse is output to the stepping motor to move the wind vane movement step, and the number of driving pulses output to the stepping motor when the wind vane swings is counted. A position discriminating step of determining the position of the wind vane and a variable speed step of varying the swing speed of the wind vane by varying the period of the driving pulse output to the stepping motor according to the position of the wind vane determined by the position discriminating step. Wind direction control method of the air conditioner, characterized in that consisting of.