KR19980072982A - Air volume control device and method of air conditioner - Google Patents

Abstract

The present invention relates to a device for controlling air volume of an air conditioner and a method thereof, the air volume selecting means (106) for selecting the air volume of the indoor fan (4l) according to the operation mode, and the indoor fan motor (123) according to the operation mode. Control means 104 for setting the maximum and minimum rotational speed range of the controller and varying the rotational frequency of the indoor fan motor 123 according to the selected air flow rate, and variable within the rotational speed range set by the control means 104. Air volume control means 122 for driving the indoor fan motor 123 according to the rotation frequency to vary the air volume of the indoor fan 41, and rotation speed detection means for detecting the rotation speed of the indoor fan motor 123 ), The maximum and minimum rotational speed range is set according to the operation mode, thereby controlling the air volume of the indoor fan motor 123, thereby reducing power consumption and creating a pleasant indoor environment.

Description

Air volume control device and method of air conditioner

The present invention relates to an air conditioner that opens and closes an inlet and an outlet, and more particularly, to an air conditioner and a method of controlling an air conditioner for controlling a user's desired air volume by adjusting the rotation speed of an indoor fan motor according to an operation mode. .

As shown in FIG. 1, a conventional air conditioner has a plurality of inlets 3 through which indoor air is sucked under the front surface of an indoor main body 1 (hereinafter referred to as a main body). Discharge openings 7 are discharged into the upper part of the front surface and discharge the air heat-exchanged by cold or warm air into the room, and the discharge holes 7 are discharged into the room through the discharge holes 7. Up and down wind vane 9 to adjust the direction of the up and down and left and right wind vane 11 to adjust the left and right are provided.

In addition, the discharge port 7 is opened in the discharge port 7 so that the air heat-exchanged in the indoor heat exchanger described later during operation of the air conditioner is smoothly supplied to the room. A discharge port door 13 is provided to close the discharge port 7 in order to prevent dust or foreign matter from flowing into the main body 1 through the discharge port 7 and to enhance the appearance.

In addition, the intake port 3 is opened in the intake port 3 so that indoor air is smoothly sucked through the intake port 3 during operation of the air conditioner, and during operation standby of the air conditioner (when not in operation). The inlet opening and closing means 30 for closing the inlet 3 is installed in order to prevent the dust and foreign substances from flowing into the main body 1 through the inlet 3 and to enhance the appearance.

A cover member 15 is fixed to the front surface of the main body 1 to secure the appearance of the indoor unit and to protect the interior, and an operation mode of an air conditioner is provided on the lower side of the cover member 15. , Cooling, dehumidification, blowing, heating, etc.) and a start / stop of operation, and an operation unit 17 for adjusting the air volume and the air direction of the air discharged through the discharge port 7.

As shown in Fig. 2, the driving means for moving the discharge port door 13 upwardly or downwardly is supported by a support member 19 fixed to the upper front of the main body 1 and the support member 19. The discharge port motor 21 is fixed and generates power for moving the discharge port door 13 upward or downward, and the shaft of the discharge port motor 2l so as to be rotatable by the power generated by the discharge port motor 21. The pinion 23 coupled to the pin 22 and the pinion 23 linearly move the pinion 23 so as to move the discharge port door 13 upward or downward in association with the pinion 23 when the pinion 23 rotates. It consists of the rack 25 to be converted.

In addition, the inlet opening and closing means 30 receives a power of the inlet motor 31 and is pinned to the reverse and reverse rotation of the pinion 32, and the one side of the pinion 32 is bitten to fix the pinion 32. A slide member 33 which linearly moves up and down according to reverse rotation, and a plurality of suction grills 34 which open and close the suction port 3 by interlocking and rotating as the slide member 33 moves linearly; It is provided on both sides of the suction grill 34 is composed of a guide member 35 for rotatably supporting the suction grill 34 and at the same time to guide the suction grill 34 to open and close.

The inside of the inlet opening and closing means 30 is provided with a straight indoor heat exchanger 37 so as to heat the indoor air sucked through the inlet 3 to the cold or warm air by the latent heat of evaporation of the refrigerant. The indoor fan motor is configured to suck the indoor air through the suction port 3 at the upper portion of the indoor heat exchanger 37 and discharge the air heat-exchanged in the indoor heat exchanger 37 to the room through the discharge port 7. A blower fan 41 (hereinafter referred to as an indoor fan) which rotates in accordance with the driving of 39 is provided.

In addition, the duct member 43 which guides the flow of air sucked through the suction port 3 and discharged to the discharge port 7 while simultaneously covering the indoor fan 41 on the outside of the indoor fan 41. Is installed.

As shown in FIG. 3, hinge shafts 34a rotatably supporting the suction grill 34 are provided at both sides of the suction grill 34, and the slide member is provided at one side of the hinge shaft 34a. The projection part 34b which is rotated by the slot groove 33a formed in one side of 33 is formed.

And, one side of the guide member 35 is formed with a fixing groove (35a) is rotatably fixed to the hinge shaft (34a) of the suction grill 34, the slide member on one side of the fixing groove (35a) As the 33 moves in a straight line, a guide hole 35b is formed to form an arc so that the protrusion 34b rotates, and a gear part is formed at one side of the slide member 33 to be engaged with the pinion 32. 33b is formed.

In the air conditioner configured as described above, the user operates the remote controller or the control unit 17 to select a desired operation mode (for example, cooling) and a set air volume (for example, a strong wind, a weak wind, a breeze) and the like. When the stop key (hereinafter referred to as an operation key) is turned on, the discharge port motor 21 and the suction port motor 31 are driven in the forward direction to open the discharge port 7 and the suction port 3.

When the discharge port 7 and the suction port 3 are opened, the driving relay of the indoor fan motor 39 is selected according to the set air volume, and the rotation speed of the indoor fan motor 39 is adjusted so that the air volume of the indoor fan 41 is strong. , The indoor air is sucked into the main body (1) through the inlet (3) by rotating in a mild wind or a breeze, the indoor air exchanger (37) while passing through the indoor heat exchanger (37) Heat exchanged by cold air by latent heat of evaporation of refrigerant flowing in

The air heat-exchanged in the indoor heat exchanger (37) is guided upward and discharged into the room through the discharge holes (7). The cold air discharged through the discharge holes (7) is the up and down wind vanes (9) and the left and right wind vanes (11). According to the wind direction angle of), the air direction is adjusted up and down or left and right to perform indoor air conditioning.

By the way, in the conventional air volume control method of the indoor fan 41, regardless of the operation mode (for example, cooling, humidification, clean operation, etc.), the air volume (for example, strong wind, Since the air volume is adjusted according to the mild wind or the breeze, there is no difference in the air volume according to the operation mode, so that the cool air discharge is excessive during the clean operation, and the noise and power consumption increase according to the operation of the indoor fan motor 39 during the humidification operation. There was a problem.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to set the maximum and minimum speed range according to the operation mode, and to control the speed of the indoor fan motor within the set range. By adjusting the air volume desired by the user, it prevents excessive cold air discharge during clean operation, and provides air volume control device and method of air conditioner that can reduce power consumption and create a comfortable indoor environment during humid operation. have.

In order to achieve the above object, the airflow control apparatus of the air conditioner according to the present invention includes an air intake port for sucking indoor air, an air outlet port for discharging air exchanged by being sucked through the air inlet port, and an air volume of air discharged through the air outlet port. An air conditioner having an indoor fan configured to control the air conditioner, the operation operation means for inputting an operation mode of the air conditioner, and the amount of air discharged through the discharge port in accordance with the operation mode input by the operation operation means. Air volume selecting means for selecting the air volume of the indoor fan to vary, and setting the maximum and minimum rotational speed area of the indoor fan motor in accordance with the operation mode input by the driving operation means, and selecting the air volume selecting means by the air flow selecting means. Control means for varying the rotational frequency of the indoor fan motor according to the air volume, and within the rotational speed range set by the control means. Air volume control means for driving the indoor fan motor in accordance with the variable rotation frequency to change the air volume of the indoor fan, and rotation speed detection means for detecting the rotational speed of the indoor fan motor changes when the air volume of the indoor fan changes Characterized in that consisting of.

In addition, the air volume control method of the air conditioner according to the present invention is a clean operation step to clean the indoor air by collecting the dust particles contained in the indoor air according to the operation of the dust collector, and the steam generated by the operation of the humidifier to the room In the humidification operation step of blowing and humidifying, the air volume selection step of selecting the air volume of the discharged air by setting the maximum and minimum rotational speed area according to the operation mode in the said clean operation and humidification operation, and the said air volume selection step According to the selected air flow rate is characterized in that the air volume variable step of varying the air flow of the indoor fan to the selected air flow rate according to the operation mode by controlling the rotation speed of the indoor fan motor within the maximum and minimum speed range.

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

FIG. 2 is a longitudinal sectional view showing the air conditioner in the inlet and outlet ports of FIG. 1 closed; FIG.

Figure 3 is an exploded perspective view of the main components of Figure 1,

4 is a control block diagram of the airflow control device of the air conditioner according to an embodiment of the present invention;

5A to 5C are flowcharts showing a flow rate adjusting operation procedure of the air conditioner according to the present invention.

Explanation of symbols for the main parts of the drawings

3: inlet port 7: outlet port

13: discharge port door 21: discharge port motor

31: suction port motor 34: suction grill

37: indoor heat exchanger 41: indoor fan

100: power supply means 102: operation operation means

104: control means 106: air flow selection means

108: room temperature sensing means 110: discharge opening and closing driving means

112: outlet opening and closing detection means 114: inlet opening and closing drive means

116: intake opening detection means 118: wind direction control means

120: compressor driving means 122: indoor fan motor driving means

123: indoor fan motor 124: rotation speed detection means

126: humidifier driving means 127: humidifier

128: dust collecting driving means 130: display means

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

As shown in Fig. 4, the power supply means 100 converts a commercial AC voltage supplied from an AC power supply terminal (not shown) into a predetermined DC voltage necessary for the operation of the air conditioner, and outputs the operation AC 102. Is a plurality of air conditioners to select the operation mode (automatic, cooling, humidification, clean, heating, etc.) and the air direction and the desired temperature (Ts: hereinafter, set temperature) of the air discharged through the discharge port (7). In addition to having a function key, an operation / stop key (hereinafter referred to as an operation key) is provided to input an operation start signal and an operation stop signal of the air conditioner.

And, the control means 104 is applied to the DC voltage output from the power supply means 100 to initialize the air conditioner, as well as the air conditioning in accordance with the operation selection signal input by the operation operation means (102) As a microcomputer that controls the overall operation of the machine, the control means 104 controls the indoor fan motor 123 according to each operation mode (eg, cooling, humidification, cleanness, etc.) selected by the driving operation means 102. Set the maximum / minimum rotational speed area and change the rotational frequency of the indoor fan motor 123 according to the airflow amount selected by the airflow selection means described below to adjust the airflow volume of the indoor fan 41 according to the operation mode. .

The air flow rate selecting means 106 selects the air volume desired by the user using a volume switch and an encoder using the volume resistance, and the room temperature detecting means 108 uses the temperature set by the user by the operation manipulation means 102. Ts) is controlled to detect the temperature (Tr) of the indoor air sucked through the suction port 3 to perform the air conditioning operation of the air conditioner by controlling the indoor ondol to output to the control means (104).

In addition, the discharge opening and closing driving means 110 receives the control signal output from the control means 104 when the operation start signal and the operation stop signal by the operation operation means 102 to open and close the discharge port (7) The drive port motor 21 is driven to control the discharge port door 13 to move up and down, and the discharge opening / closing detecting means 112 is moved by the discharge opening / closing drive means 110. It detects whether the discharge port 7 is opened or closed according to the opening and closing position and outputs it to the control means 104.

The suction opening and closing driving means 114 receives a control signal output from the control means 104 when the operation start signal and the operation stop signal by the operation operation means 102 are input and open and close the suction port 3. Driving control of the inlet motor 31 to move the grill 34, the inlet opening detection means 116 according to the rising position of the slide member 33 to move upward in accordance with the drive of the inlet motor 31. The suction grill 34 detects whether the suction port 3 is opened and outputs the result to the control means 104.

In addition, the wind direction control means 118 receives a control signal output from the control means 104 in accordance with the wind direction selected by the driving operation means 102 up and down the direction of the air discharged through the discharge port (7) And controlling the stepping motor 119 (hereinafter referred to as a wind direction motor) for adjusting the left and right, and the compressor driving means 120 senses the temperature Ts set by the user by the driving operation means 102 and the room temperature. The compressor 121 receives the control signal output from the control means 104 according to the difference of the room temperature Tr sensed by the means 108 to drive the compressor 121.

The indoor fan motor driving means 122 blows the air (cold or warm air) heat-exchanged in the indoor heat exchanger 37 according to the air flow selected by the user by the air flow selector 106 to the room. Control the rotational frequency of the BLDC motor 123 (hereinafter, referred to as an indoor fan motor) to adjust the air volume of the indoor fan 41, and the rotation speed detection means 124 is the air flow selection means. The number of revolutions of the indoor fan motor 123 driven according to the air volume selected by the 106 is sensed and output to the control means 104.

Also, in the drawing, the humidification driving means 126 receives a control signal output from the control means 104 to generate water vapor in accordance with an operation mode (automatic or humidifying) input by the driving operation means 102, and a humidifier. Drive control unit 127, and the dust collection driving unit 128 is output from the control unit 104 to clean the indoor air according to the operation mode (automatic or clean) input by the driving operation unit 102; In response to the control signal, the dust collector 129 is driven and controlled.

The display means 130 displays the operation mode (automatic, cooling, humidification, clean, heating, etc.) input by the operation operation means 102 and the operation state of the air conditioner.

Meanwhile, the indoor fan motor driving means 122 and the rotation speed sensing means 124 may be implemented on a single driver PCB to which the control means 104 and the indoor fan motor 123 are connected.

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

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

As an initial condition for explaining the operation of the present invention, it is assumed that the suction port 3 and the discharge port 7 are closed.

First, when power is applied to the air conditioner, the power supply means 100 converts a commercial AC voltage supplied from an AC power terminal (not shown) into a predetermined DC voltage required for driving the air conditioner, thereby driving each circuit and control means ( Output to 104).

Therefore, in step S1, the DC voltage output from the power supply means 100 is input from the control means 104 to initialize the air conditioner.

At this time, the user inputs the operation mode (for example, cooling), the set temperature (Ts), the set air volume of the desired air conditioner by operating the operation operation means 102, and then press the operation key, the operation operation means ( From the 102, an operation selection signal and an operation start signal (hereinafter referred to as operation signal) are input to the control means 104.

Accordingly, in step S2, the control means 104 determines whether the driving signal is input from the driving operation means 102, and maintains the air conditioner in the operation standby state when the driving signal is not input (NO). The operation of step S2 and below is repeated.

As a result of the discrimination in step S2, when the operation signal is input (YES), the flow advances to step S3, and the control means 104 sends a control signal for opening the intake port 3 that is closed to the intake opening and closing drive means 114. )

Therefore, the inlet opening and closing driving means 114 is driven by the inlet motor 31 under the control of the control means 104 to drive the inlet motor 31 in the forward direction while being coupled to the shaft of the inlet motor 31 ( 32 is rotated, the slot member geared to one side of the pinion 32 is raised, the slot groove formed to be inclined to a certain degree on one side of the slide member 33 as the slide member 33 is raised ( As the 33a) is raised and the slot groove 33a is raised, the protrusion 34b of the suction grill 34 is rotated by the guide hole 35b having an arc shape, and rotates. The hinge shaft 34a formed at one side is fixed to the fixing groove 35a to form the shaft, and the suction grill 34 is rotated at an angle to open the suction port 3.

Subsequently, in step S4, the control means 104 outputs a control signal for opening the discharge port 7 which is closed to the discharge port opening and closing drive means 110.

Accordingly, the discharge opening and closing drive means 110 is coupled to the shaft 22 of the discharge port motor 21 while the discharge port motor 21 is driven in the forward direction by driving the discharge port motor 2l under the control of the control means 104. The pinion 23 is rotated downward along the rack 25 to move the discharge port door 13 coupled with the rack 25 to open the discharge port 7.

At this time, in step S5 the position of the discharge port door 13 moved downward by the drive of the discharge port motor 21 is sensed by the discharge opening and closing detection means 112, the image is driven by the drive of the suction port motor 31 The rising position of the slide member 33 moving in the direction is detected by the inlet opening detecting means 116.

Accordingly, the control means 104 determines whether the discharge port door 13 and the suction grill 34 are opened by receiving the signals sensed by the discharge opening / closing detecting means 112 and the suction opening opening detecting means 116. If the discharge door 13 and the suction grill 34 are not opened (NO), the flow returns to step S3 and the discharge port motor 21 and the suction port motor are opened until the discharge door 13 and the suction grill 34 are opened. Continue to drive (31).

As a result of the discrimination in step S5, when the discharge port door 13 and the suction grill 34 are opened (YES), the flow proceeds to step S6 and the discharge opening / closing driving means 110 discharges the opening according to the control of the control means 104. The opening of the discharge port door 13 is completed by stopping the driving of the motor 21, and the suction opening / closing drive means 114 stops the driving of the suction port motor 31 under the control of the control means 104 to draw the suction grill. The opening operation of 34 is completed.

When the discharge port door 13 and the suction grill 34 are completely open, the control means 104 controls the indoor fan 41 to control the indoor fan 41 in step S7 to perform the cooling operation of the air conditioner. Output to the motor driving means (122).

Accordingly, the indoor fan motor driving means l22 drives the indoor fan 41 by controlling the rotation speed of the indoor fan motor 123 according to the set air volume.

When the indoor fan 41 is driven, the indoor air begins to be sucked into the main body 1 through the suction port 3, and at this time, the indoor temperature of the indoor air sucked through the suction port 3 is detected. Sense at the means 108.

Therefore, in step S8, the analog data of the room temperature Tr sensed by the room temperature sensing means 108 is input and converted into digital to determine whether the temperature Ts set by the user is smaller than the room temperature Tr. If the set temperature Ts is not smaller than the room temperature Tr (NO), the process returns to the step S7 and repeatedly detects the room temperature Tr, and repeats the operations below the step S7.

As a result of the discrimination in step S8, when the set temperature Ts is smaller than the room temperature Tr (YES), the process proceeds to step S9, and the control means 104 determines the indoor temperature Tr and the set temperature Ts. The driving frequency of the compressor 121 is determined according to the difference, and a control signal for driving the compressor 121 is output to the compressor driving means 120.

Therefore, the compressor driving means 120 drives the compressor 121 according to the operating frequency determined by the control means 104.

When the compressor 121 is driven, the indoor fan 41 is driven in the step S10 while the indoor air is sucked into the main body 1 through the suction port 3, and the indoor air sucked through the suction port 3 is indoors. Heat is exchanged by cold air by the latent heat of evaporation of the refrigerant flowing in the heat exchanger 37.

The air heat-exchanged by the cold air in the indoor heat exchanger 37 is moved upwards and the wind port is moved up or down or left and right according to the wind direction angles of the upper and lower wind vanes 9 and the left and right wind vanes 11 rotatably installed at the discharge port 7. Perform room cooling while adjusting.

In the cooling operation of the air conditioner as described above, in step S11, it is determined whether the humidification operation is input from the operation operation means 102, and if the humidification operation is not input (NO), the process proceeds to step S12. If the clean operation is inputted from the means 102, and if no clean operation is input (NO), the operation returns to step S10 and continues the cooling operation, and repeats the operation of step S10 or less.

As a result of the determination in step S12, when a clean operation is input (YES), the controller 104 proceeds to step S13 to perform a clean operation for cleaning indoor air. Dust control driving means for outputting a control signal for driving the indoor fan 41 to the indoor fan motor driving means 122 by setting the maximum / minimum rotational speed area of Output to (128).

Therefore, the indoor fan motor driving means 122 controls the rotation frequency of the indoor fan motor 123 within the maximum / minimum rotational speed range of the indoor fan motor 123 under the control of the control means 104 to control the indoor fan ( 41, and the dust collector driving means 128 drives the dust collector 129 under the control of the control means 104, so that the indoor air sucked through the suction port 3 passes through the dust collector 129, Since the air, which has been cleaned while being collected, is discharged into the room through the discharge port 7, a clean operation for cleaning the indoor air is performed.

At this time, in step S14, it is determined whether the air volume of the indoor fan 41 is adjusted by operating the air volume selecting means 106 composed of a volume switch or encoder using volume resistance, and if the air volume is adjusted (YES), Proceeding to S15, the control means 104 outputs a control signal for varying the rotational frequency of the indoor fan motor 123 to the indoor fan motor driving means 122 with the frequency change according to the air volume up / down.

Therefore, the indoor fan motor driving means 122 adjusts the rotation frequency of the indoor fan motor 123 up or down according to the variable rotation frequency in the control means 104 while driving the indoor fan 41 with the control air volume. Carry out clean operation.

At the time of clean operation of the air conditioner as described above, in step S16, the operation key of the operation operation means 102 is turned off to determine whether the operation stop signal is input, and when the operation stop signal is not input (when NO). In step S11, the operation of step S11 or less is repeatedly performed while continuing to perform humidification or clean operation.

As a result of the discrimination in step S16, when the operation stop signal is input (YES), the control means 104 sends a control signal for stopping the indoor fan 41 and the dust collector 129 to the indoor fan. Output to the motor driving means 122 and the dust collecting driving means (128).

Accordingly, the indoor fan motor driving means 122 stops the driving of the indoor fan 41 by stopping the indoor fan motor 123 under the control of the control means 104, and the dust collecting driving means 128 controls the control means. The clean operation is stopped by stopping the dust collector 129 according to the control of 104, and in step S18, the control means 104 sends a control signal for closing the inlet 3, which is open, to the inlet opening and closing drive means 116. Output to

Accordingly, the inlet opening and closing driving means 116 is coupled to the axis of the inlet motor 31 while the inlet motor 31 is driven in the reverse direction by driving the inlet motor 31 under the control of the control means 104. As the pinion 32 is reversely rotated, the slide member 33 geared to one side of the pinion 32 is lowered, and as the slide member 33 is lowered, the pinion 32 is inclined to one side of the slide member 33 to a certain degree. As the slot grooves 33a are formed and the slot grooves 33a are lowered, the protrusion 34b of the suction grill 34 is rotated by the guide hole 35b having an arc shape, and the protrusion is rotated. The hinge shaft 34a formed at one side of the 34b is fixed to the fixing groove 35a, and the suction grill 34 is rotated at a predetermined angle to close the suction port 3 as the shaft is formed.

At this time, in step S19, the closing drive time of the inlet motor 31 is counted by the control means 104, and a predetermined time (data calculated by experimenting the time required for the suction grill to close, about 11.5 seconds) has elapsed. If it is determined that the predetermined time has not elapsed (NO), the flow returns to step S18 to continue driving the inlet motor 31 until the suction grill 34 is closed.

As a result of the discrimination in step S19, when the predetermined time has elapsed (YES), it is determined that the suction grill 34 is completely closed, and the flow proceeds to step S20, where the inlet opening / closing driving means 110 controls the control means 104. Under the control, the driving of the suction port motor 31 is stopped to complete the closing operation of the suction grill 34.

Subsequently, in step S21, the control means 104 outputs a control signal for closing the discharge port 7 which is open to the discharge port opening and closing drive means 112.

Therefore, in the discharge opening and closing driving means 112 is driven to the discharge port motor 21 in the reverse direction by driving the discharge port motor 21 under the control of the control means 104 is coupled to the shaft 22 of the discharge port motor 21 Pinion (23) is linked to it is rotated upward along the rack 25 to move the discharge port door 13 coupled to the rack 25 upwards to close the discharge port (7).

At this time, in step S22 the position of the discharge port door 13 moved upward by the drive of the discharge port motor 21 is detected by the discharge opening and closing detection means 114, the control means 104, the discharge opening and closing detection means ( It is determined whether the discharge port door 13 is closed by receiving the signal sensed by 114.

As a result of the discrimination in step S22, when the discharge port door 13 is not closed (NO), the flow returns to step S21 to continue driving the discharge port motor 21 until the discharge port door 13 is completely closed, When the discharge port door 13 is closed (YES), the flow proceeds to step S23, and the discharge opening / closing driving means 112 stops the drive of the discharge port motor 21 under the control of the control means 104 to discharge the discharge door 13 Completes the closing operation.

On the other hand, the driving of the inlet motor 31 in the steps S18 to S20 and the driving of the discharge port motor 21 in the steps S21 to S23 are performed at the same time.

Subsequently, in step S24, the control means 104 returns to the step S2 while maintaining the air conditioner in the operation standby state until the operation signal is input again by the driving operation means 102, and repeats the operation of step S2 or less. do.

On the other hand, if the result of the determination in step S11, if the humidification operation is input (YES), the control means 104 proceeds to step S31 to perform the humidification operation to humidify indoors, the control means 104 is adapted to the indoor fan motor Humidifier outputs a control signal for driving the indoor fan 41 to the indoor fan motor driving means 122 by setting the maximum / minimum rotational speed area of the (123) and at the same time to drive the humidifier 127 Output to the drive means 126.

Therefore, the indoor fan motor driving means 122 controls the rotation frequency of the indoor fan motor 123 within the maximum / minimum rotational speed range of the indoor fan motor 123 according to the control of the control means 104 to control the indoor fan ( 41).

In addition, the humidification driving means 126 drives the humidifier 127 according to the control of the control means 104 so that water vapor generated in the humidifier l27 is ejected into the room according to the rotation of the indoor fan 41, thereby controlling the indoor humidity. When the air volume is adjusted while the humidification operation is performed, the humidification operation is performed while the humidification operation is performed while controlling the air volume of the indoor fan 41 by varying the rotation frequency of the indoor fan motor 123 with the frequency change according to the air volume up / down. If it is input, the operation of step S17 or less is repeated while stopping the indoor fan 41 and the humidifier 127.

In addition, when it is determined in step S14 that the air volume is not adjusted (NO), the step S16 is performed while the humidification or clean operation is performed by driving the air volume according to the initial set air volume without adjusting the air volume of the indoor fan 41. Subsequently, the operation of step S16 or less is repeated.

According to the air volume control device and the method of the air conditioner according to the present invention as described above, by adjusting the number of revolutions of the indoor fan motor (l23) according to the operation mode to adjust the air volume desired by the user during clean operation There is an effect that can prevent excessive cold air discharge, reduce the power consumption and create a comfortable indoor environment during humidification operation.

Claims (5)

An inlet port 3 for sucking indoor air, a discharge port 7 for discharging air exchanged through the suction port 3, and an indoor fan for controlling the air volume of the air discharged through the discharge port 7; 41. An air conditioner comprising: a driving operation means (102) for inputting an operation mode of the air conditioner; and through the discharge port (7) in accordance with the operation mode input by the operation operation means (02). The air volume selecting means 106 for selecting the air volume of the indoor fan 41 so as to vary the air volume of the discharged air, and the indoor fan motor 123 according to the operation mode input by the driving operation means 102. Control means 104 for setting a maximum and minimum rotational speed area and for varying the rotational frequency of the indoor fan motor 123 according to the airflow amount selected by the airflow selection means 106, and the control means 104 According to the variable rotation frequency within the rotation speed range D) the air volume adjusting means l22 for driving the indoor fan motor 123 to vary the air volume of the indoor fan 41, and the indoor fan motor 123 that changes when the air volume of the indoor fan 41 is changed; Air volume control device of the air conditioner, characterized in that consisting of a rotation speed detection means for detecting the number of revolutions (124). The air volume control device of claim 1, wherein the air flow rate selecting means selects the air flow rate within the rotational speed region of the indoor fan motor 123 set for the humidification operation during the humidification operation. The airflow control apparatus of claim 1, wherein the airflow selector (106) selects the airflow within the rotational speed region of the indoor fan motor (123) set for a clean operation during the air cleaning operation. The method of claim 1, wherein the control means 104 changes the rotational frequency of the indoor fan motor 123 according to the air flow selected by the air flow selection means 106 to change the air flow of the indoor fan 41 to the selected air flow Air volume control device of the air conditioner, characterized in that for adjusting. A clean operation step of collecting dust particles contained in indoor air according to the operation of the dust collector 129 to clean the indoor air, and a humidification operation step of ejecting water vapor generated by the operation of the humidifier 127 into the room for humidification. And a flow rate selection step of selecting a flow rate of the discharged air by setting a maximum and minimum rotational speed area in accordance with the operation mode during the clean operation and the humidification operation, and a maximum and minimum flow rate according to the flow rate selected in the flow rate selection step. Air volume control method of the air conditioner, characterized in that consisting of the air flow variable step of varying the air flow of the indoor fan 41 to the selected air flow in accordance with the operation mode by controlling the rotation speed of the indoor fan motor 123 within the speed range. .