KR0182580B1 - Exit open/close device and its method of airconditioner - Google Patents

Abstract

The present invention relates to a discharge opening and closing device of the air conditioner, and a method of controlling the opening degree of the discharge port door (8) in accordance with the indoor fan speed to maintain a constant reach of the discharge air, the method of the indoor fan motor (71) The discharge speed of the discharge port door 8 is set such that the reach speed of the discharged air is constant according to the rotational speed of the fan speed detecting means 80 and the rotational speed of the indoor fan motor 71 sensed by the fan speed detecting means 80. A control means 30 for controlling the opening degree, a door motor driving means for driving the door motor 12 to change the opening degree of the discharge door 8 according to the control of the control means 30, and The door opening and closing detection means (50) for detecting the opening and closing state of the discharge door (8) when the discharge door (8) by the drive of the door motor 12, the speed change of the indoor fan motor (71) The opening degree of the discharge port door 8 is changed according to You can increase the comfort level by keeping the distance constant.

Description

Discharge port switchgear of air conditioner and its method

1 is a perspective view showing an air conditioner in a state in which a discharge port is closed according to an embodiment of the present invention.

2 is a perspective view showing an air conditioner in a state where an outlet is open according to an embodiment of the present invention.

3 is a schematic side cross-sectional view of an air conditioner according to an embodiment of the present invention.

Figure 4 is an operating state diagram showing the discharge opening and closing state of the air conditioner according to an embodiment of the present invention.

Figure 5 is a control block diagram of the discharge opening and closing device of the air conditioner according to an embodiment of the present invention.

6A and 6B are flow charts showing the discharge opening and closing control operation procedure of the air conditioner according to the present invention.

7 is a view showing the indoor air distribution in the 'strong wind' of the indoor fan motor to be applied to the present invention.

8 is a view showing the indoor air distribution in the 'soft wind' of the indoor fan motor to be applied to the present invention.

* Explanation of symbols for main parts of the drawings

3: inlet port 4: discharge port

5: heat exchanger 6: indoor fan

8: outlet port door 12: door motor

20: DC power supply means 25: operation operation means

30: control means 35: room temperature detection means

40: door motor driving means 50: door opening and closing detection means

60: compressor driving means 61: compressor

70: fan motor driving means 71: indoor fan motor

80: fan speed detection means 90: display means

The present invention relates to a discharge opening and closing device and a method of an air conditioner to adjust the opening degree of the discharge port door according to the indoor fan speed to uniform the reach of the discharge air.

In general, the air conditioner according to the related art is equipped with a discharge port door for opening and closing the discharge port for discharging the heat exchanged air in the heat exchanger to prevent the inflow of dust or foreign matter in the air during operation of the air conditioner operation Alternatively, when the operation stop signal is input after the air conditioning operation, the compressor and the indoor fan motor are turned off and the discharge port door is moved upward to close the discharge port.

On the other hand, when the operation start signal is input during the operation standby of the air conditioner, the discharge port door is moved downward to open the discharge port as the door motor is driven.

At this time, if the photo sensor attached to the upper and lower predetermined positions of the discharge port detects the opening and closing state of the discharge port, the control unit determines whether the discharge port door is opened or closed according to the open / close detection signal (high or low level signal) detected by the photo sensor. To control the normal operation and standby operation of the air conditioner.

By the way, in this way, the discharge port is completely open regardless of the speed (revolution) of the indoor fan motor during operation of the air conditioner, so that the air velocity of the air discharged through the discharge port is constant according to the speed of the indoor fan motor. When the indoor fan motor's speed is changed to a weak wind, there is a problem in that the airflow cannot be controlled to a long distance beyond the motor's performance because the speed of the discharged air is reduced so that a comfortable air conditioning effect can be obtained in a large space.

Therefore, the present invention has been made to solve the above problems, the object of the present invention is to change the opening degree of the discharge port door according to the speed change of the indoor fan motor to make the reach (wind speed) of the discharge air constant Disclosed are a discharge opening and closing device of an air conditioner capable of increasing indoor comfort, and a method thereof.

In order to achieve the above object, the discharge opening and closing device of the air conditioner according to the present invention includes a suction inlet for sucking indoor air, a heat exchanger for exchanging indoor air sucked through the suction opening, and discharging air exchanged by the heat exchanger. A discharge fan, an indoor fan motor that sucks indoor air through the suction port and discharges air heat-exchanged in the heat exchanger into the room through the discharge port, and the discharge port to prevent dust or foreign matter from flowing through the discharge port. In the air conditioner having a discharge port door for opening and closing the fan speed detection means for detecting the rotational speed of the indoor fan motor, and through the discharge port in accordance with the rotational speed of the indoor fan motor detected by the fan speed detection means To control the opening degree of the discharge port door so that the reach of the discharged air is constant A door motor driving means for driving a door motor to change the opening degree of the discharge port door under the control of the fishing means, the control means, and detecting the opening and closing state of the discharge port door moving in accordance with the drive of the door motor Characterized in that the door opening and closing detection means.

In addition, the discharge opening and closing method of the air conditioner according to the present invention includes a motor drive step for driving the indoor fan motor according to the set weight input by the operation operation means, and a speed sensing step for detecting the rotational speed of the indoor fan motor; An opening change step of changing the opening degree of the discharge port door by driving the door motor to adjust the wind speed of the air discharged through the discharge port according to the rotational speed of the indoor fan motor sensed by the speed detecting step; It characterized in that the opening and closing detection step for detecting the opening and closing state of the discharge port door in accordance with the drive.

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

As shown in FIGS. 1 to 3, reference numeral 1 denotes an indoor unit main body (hereinafter referred to as a main body) of an air conditioner, and the front surface of the main body 1 forms an exterior of the indoor unit and operates at a predetermined position. The cover member 2 provided with the operation means 25 is fixed.

In addition, an inlet port 3 through which the indoor air is sucked is formed in the lower part of the front surface of the main body 1, and a discharge port 4 that discharges heat-exchanged air (cold or warm air) into the upper part of the front surface of the main body 1. Is formed, and the air discharge port 4 is equipped with a wind direction up and down control plate 411 and a wind direction left and right control plate 421 for controlling the direction of the air discharged into the room.

In addition, a linear heat exchanger 5 is installed at the center of the main body 1 so as to heat-exchange the indoor air sucked through the suction port 3 to cold or warm air by evaporative latent heat of the refrigerant. In the lower part of the heat exchanger (5), an indoor fan (6) which sucks indoor air through the suction port (3) and discharges air heat-exchanged in the heat exchanger (5) to the room through the discharge port (4) is provided. It is installed.

In addition, in the drawing, the discharge port 4 is opened to open the discharge port 4 so that the air heat-exchanged in the heat exchanger 5 is smoothly supplied into the room during the operation of the air conditioner. During operation standby, the discharge port door 8 for closing the discharge port 4 is upward or downward in order to prevent dust or foreign matter from entering into the main body 1 through the discharge port 4 and to have a beautiful appearance. It is mounted so that it can be moved.

On the other hand, the drive means for driving the discharge port door 8 upward or downward is fixed by the support member 10 and the support member 10 fixed to the upper portion of the indoor unit 1, the discharge port door 8 Is coupled to the shaft 12a of the door motor 12 so as to be rotatable by the power generated by the door motor 12 and the door motor 12 generating power for moving upward or downward). Rack for converting the pinion gear 14 and the rotational movement of the pinion gear 14 to linear movement so as to move the discharge port door 8 upward or downward in association with the pinion gear 14 and the rotation of the pinion gear 14. The gear 16 is comprised.

Next, a control block diagram for changing the open state of the discharge port in the air conditioner configured as described above will be described with reference to FIG.

As shown in FIG. 5, the DC power supply means 20 converts a commercial AC voltage supplied from an AC power supply terminal (not shown) into a predetermined DC voltage required for the operation of the air conditioner, and outputs the same. 25) selects the operation mode (automatic, cooling, dehumidification, blowing, heating, etc.) of the air conditioner and the air volume and the desired temperature (hereinafter referred to as the set temperature) of the air discharged through the discharge port (4) A plurality of function keys are provided as well as an operation / stop key (hereinafter referred to as an operation key) for selecting an on / off operation of the air conditioner.

In addition, the control means 30 receives the DC voltage output from the DC power supply means 20 to initialize the air conditioner, as well as the operation selection signal and the operation start / input inputted by the operation operation means 25. The microcomputer controls the overall operation of the air conditioner according to the operation stop signal.

The indoor temperature detecting means 35 is sucked through the intake port 3 to control the indoor temperature to the temperature Ts set by the user by the driving operation means 25 to perform the air conditioning operation of the air conditioner. The temperature Tr of the indoor air is sensed, and the door motor driving means 45 receives a control signal output from the control means 30 upon input of an operation start signal and an operation stop signal by the operation operation means 25. The door motor 12 is drive-controlled so as to move the discharge port door 8 which opens and closes the discharge port 4 up and down.

In addition, the door opening / closing detecting means 50 detects whether the discharge opening 4 is opened or closed according to the opening / closing position of the discharge opening door 8 which is moved up and down by the door motor driving means 45. The compressor driving means 60 is connected to the difference between the temperature Ts set by the user by the driving operation means 25 and the room temperature Tr sensed by the room temperature sensing means 35. In response to the control signal output from the control means 30 to drive control the compressor (61).

In addition, the fan motor driving means 70 controls the rotational speed of the indoor fan motor 71 by receiving a control signal output from the control means 30 to blow the air heat-exchanged in the heat exchanger 5 into the room. Drive the indoor fan (6), and the fan speed detecting means (80) detects the rotational speed (RPM) of the indoor fan motor (71) driven by the fan motor driving means (70) and the control means ( Output to 40).

The display means 90 is provided with an operation selection mode (automatic, cooling, dehumidifying, blowing, heating, etc.) input by the driving operation means 25 under the control of the control means 30, and the set temperature Ts and the room. In addition to displaying the temperature (Tr), it displays the operating state of the air conditioner.

Hereinafter, the effect of the discharge opening and closing device of the air conditioner and the method configured as described above will be described.

6A and 6B are flowcharts showing the operation procedure of the discharge opening / closing control operation of the air conditioner according to the present invention. In Figs. 6A and 6B, S denotes a step.

As an initial condition for explaining the operation of the present invention, it is assumed that the discharge port 4 is closed.

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 supply terminal (not shown) into predetermined DC voltages required for driving the air conditioner, thereby driving circuits and control means. Output to 30.

Therefore, in step S1, a 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, when the user inputs the set temperature Ts, the set air volume, and the set wind direction of the room to be cooled by operating the driving operation means 25, and then turns on the operation key, the operation instruction from the driving operation means 25 and An operation start signal (hereinafter referred to as an operation signal) is input to the control means 30.

Accordingly, in step S2, the control means 30 determines whether the driving signal is input from the driving operation means 25, and maintains the air conditioner in the operating standby state when the driving signal is not input (NO). The operation of step S2 and below is repeated.

As a result of the determination in step S2, when the operation signal is input (YES), the controller 30 proceeds to step S3 to perform the cooling operation of the air conditioner, and the control means 30 controls to drive the indoor fan 6. The signal is output to the fan motor driving means 70.

Therefore, the fan motor driving means 70 receives the control signal output from the control means 30 in accordance with the set amount of air input by the driving operation means 25 to control the rotation speed of the indoor fan motor 71 to indoor The fan 6 is driven.

When the indoor fan 6 is driven according to the set air volume, the indoor air starts to be sucked into the main body 1 through the doorway 3, and at this time, the temperature Tr of the indoor air sucked through the suction port 3. Detects the indoor temperature detecting means (35).

Accordingly, in step S4, the indoor temperature Tr sensed by the indoor temperature detecting means 35 is compared with the temperature Ts set by the user to the operation operation means 25 to apply the driving condition of the compressor 61. Determine.

The driving condition of the compressor 61 is a case in which the room temperature Tr sensed by the room temperature sensing means 35 is greater than the temperature Ts set by the user during the cooling operation. The room temperature Tr sensed by the room temperature detecting means 35 is smaller than the temperature Ts set by the user.

As a result of the discrimination in step S4, if it is not the driving condition of the compressor 61 (NO), the process returns to the step S3 and repeatedly performs the operation of step S3 or less while continuously detecting the room temperature Tr, In the case of the driving condition of the compressor 61 (YES), the control means 30 determines the operating frequency of the compressor 61 according to the difference between the room temperature Tr and the set temperature Ts. The control signal for driving the compressor 61 is output to the compressor driving means 60.

Therefore, the compressor driving means 60 drives the compressor 61 according to the operating frequency determined by the control means 30, and in step S6 the rotation speed of the indoor fan motor 71 is determined by the fan speed detecting means 80. By detecting and determining whether the indoor fan motor 71 is 'strong wind', and if the speed of the indoor fan motor 71 is 'strong wind' (YES), the process proceeds to step S7 where the control means 30 is closed. The control signal for completely opening the discharge port 4 is output to the door motor driving means 40.

Accordingly, the door motor driving means 40 drives the door motor 12 under the control of the control means 30, so that the door motor 12 is driven in the forward direction as shown in FIG. The pinion gear 14 coupled to the shaft 12a of the door motor 12 interlocks with it and rotates downward along the rack gear 16 to operate the discharge port door 8 downward to open the discharge port 4. Let's do it.

Subsequently, in step S8, the position of the discharge opening door 8 moved downward by the driving of the door motor 12 is detected by the door opening and closing detecting means 50, and the control means 30 detects the door opening and closing detecting means ( It is determined whether the discharge port 4 is completely opened by receiving the signal sensed by 50).

As a result of the discrimination in step S8, when the discharge port 4 is not fully opened (NO), the door motor 12 is continuously driven until the discharge port door 8 is fully opened. When the discharge port 4 is completely opened (YES), the process proceeds to step S9 and the door motor driving means 40 stops driving the door motor 12 under the control of the control means 30 to discharge the door door ( Complete the fully open operation of 8).

That is, when the discharge port 4 is completely opened, since the opening degree of the discharge port 4 is large, the air heat exchanged in the heat exchanger 5 is discharged through the discharge port 4, and the pressure is weakened, so that the air flow becomes weak and slow. In addition, since the speed of the indoor fan motor 71 is 'strong wind', as shown in the hatched portion of FIG. 7, the reach of the air discharged from the discharge port 4 to the room is constant so that the indoor temperature can be maintained comfortably.

Accordingly, in step S10, the air discharged from the heat exchanger 5 in accordance with the speed of the indoor fan motor 71 is changed in accordance with the speed of the indoor fan motor 71 according to the operating conditions selected by the user by the operation operation means 25. It is discharged into the room through the normal operation to perform the indoor air conditioning.

At this time, in step S11, it is determined whether the operation stop signal is input to the control means 30 from the operation operation means 25 during the normal operation of the air conditioner, and when the operation stop signal is not input (NO), Returning to step S10, the operation is continued.

As a result of the discrimination in step S11, when the operation stop signal is input (YES), the control means 30 advances the control signal for stopping the compressor 61 and the indoor fan motor 71 to the compressor S12. Output to drive means 60 and fan motor drive means.

Therefore, the compressor driving means 60 stops the compressor 61 under the control of the control means 30, and the fan motor driving means 70 controls the indoor fan motor 71 under the control of the control means 30. To stop the driving of the indoor fan 6.

Subsequently, in step S13, the control means 30 outputs a control signal to the door motor driving means 40 to close the discharge port 4 which is completely open or 50% open according to the speed change of the indoor fan motor 71. do.

Accordingly, the door motor driving means 40 drives the door motor 12 under the control of the control means 30, so that the door motor 12 is driven in the reverse direction as shown in FIG. The pinion gear 14 coupled to the shaft 12a of the door motor 12 rotates upward along the rack gear 16 to operate the discharge port door 8 upward to close the discharge port 4. Let's do it.

Subsequently, in step S14, the position of the discharge opening door 8 moving upward by the driving of the door motor 12 is detected by the door opening and closing detecting means 50, and the control means 30 detects the door opening and closing detecting means ( The signal sensed by 50 is input to determine whether the discharge port 4 is completely closed.

As a result of the discrimination in step S14, when the discharge port 4 is not completely closed (NO), the door motor 12 is continued to drive until the discharge port door 8 is completely closed. When the discharge port 4 is completely closed (YES), the process proceeds to step S15 and the door motor driving means 40 stops driving the door motor 12 under the control of the control means 30 to discharge the door door ( Complete the closing operation of 8).

Subsequently, in step S16, the control means 30 ends the operation while maintaining the air conditioner in the operation standby state until the operation start signal is input again by the operation operation means 25.

On the other hand, when the determination result in the step S6, if the speed of the indoor fan motor 71 is not a 'strong wind' (NO), the control means 30 goes to the step S61, the interior of the discharge port 4 is closed The control signal for opening 50% according to the speed of the fan motor 71 is output to the door motor driving means 40.

Accordingly, the door motor driving means 40 drives the door motor 12 under the control of the control means 30, so that the door motor 12 is driven in the forward direction as shown in FIG. The pinion gear 14 coupled to the shaft 12a of the door motor 12 interlocks with it and rotates downward along the rack gear 16 to operate the discharge port door 8 downward to open the discharge port 4. Let's do it.

Subsequently, in step S62, the position of the discharge opening door 8 moved downward by the driving of the door motor 12 is detected by the door opening and closing detecting means 50, and the control means 30 detects the door opening and closing detecting means ( In response to the signal sensed by 50), it is determined whether the discharge port 4 is 50% open.

As a result of the discrimination in step S62, when the discharge port 4 is not 50% open (NO), the door motor 12 is continued until the discharge port door 8 is opened 50% by returning to step S61. When the discharge port 4 is open at 50% (YES), the process proceeds to the step S9 and repeats the operation of the step S9 or less.

That is, when the discharge opening 4 is 50% open, since the opening degree of the discharge opening 4 is small, the pressure is strengthened while the air heat-exchanged in the heat exchanger 5 is discharged through the discharge opening 4 which is small, and the flow of air is increased. Since the fan speed of the indoor fan motor 71 is 'weak' because it is stronger and faster, the distance of the air discharged from the discharge port 4 to the room is constant, as in the hatched portion of FIG. I can keep it.

As described above, according to the discharge opening and closing device and the method of the air conditioner according to the present invention, the opening degree of the discharge port door is changed in accordance with the change of the speed of the indoor fan motor so that the reach distance (wind speed) of the discharge air is constant This is an excellent effect that can increase the indoor optimal.

Claims (5)

An inlet port 3 for sucking indoor air, a heat exchanger 5 for exchanging indoor air sucked through the suction port 3, and a discharge port 4 for discharging air exchanged by the heat exchanger 5 And an indoor fan motor 71 which sucks indoor air through the suction port 3 and discharges air heat-exchanged in the heat exchanger 5 to the room through the discharge port 4, and the discharge port 4. In the air conditioner provided with a discharge door (8) for opening and closing the discharge port (4) to prevent the inflow of dust or foreign matter through the fan speed detection means for detecting the rotational speed of the indoor fan motor (71) And control means 30 for controlling the opening degree of the discharge port door 8 according to the rotational speed of the indoor fan motor 71 sensed by the fan speed detecting means 80, and the control means. To change the opening degree of the discharge port door 8 under the control of 30; The door motor driving means 40 for driving the motor 12, and the door opening and closing detection means 50 for detecting the opening and closing state of the discharge door (8) moving in accordance with the drive of the door motor 12. Discharge port opening and closing device of the air conditioner characterized in that. The method of claim 1, wherein the control means 30 changes the opening degree of the discharge port door 8 in accordance with the speed change of the indoor fan motor 71 to reach the distance of the air discharged through the discharge port (4) Discharge port opening and closing device of the air conditioner, characterized in that to control constantly. A motor driving step for driving the indoor fan motor 71 according to the set wind volume inputted by the driving operation means, a speed sensing step for sensing the rotational speed of the indoor fan motor 71, and the speed sensing step An opening change step of changing the opening degree of the discharge port door 8 by driving the door motor 12 to adjust the wind speed of the air discharged through the discharge port 4 according to the rotational speed of the indoor fan motor 71; Discharge opening and closing method of the air conditioner, characterized in that the opening and closing detection step for detecting the opening and closing state of the discharge door (8) moving in accordance with the drive of the door motor (12). 4. The air conditioner according to claim 3, wherein when the rotational speed of the indoor fan motor 71 is 'strong wind', the discharge door 8 is completely opened so that the opening degree of the discharge port 4 is large. How to open and close the outlet of the machine. The method of claim 3, wherein when the rotational speed of the indoor fan motor 71 is 'weak air', the air outlet door 8 is opened by 50% so that the opening degree of the discharge port 4 is small. Method for opening and closing the discharge port of the conditioner.