KR100231049B1 - Air conditioner control device and method - Google Patents

Abstract

The present invention relates to a control device and a method of an air conditioner, comprising: an air conditioner having an electric heater for heating air blown by an indoor fan, the heater mounting detecting switch detecting whether the electric heater is mounted; Control means for controlling the driving speed of the indoor fan by determining whether the electric heater is mounted according to the switch signal detected by the heater mounting detection switch, and when the electric heater is mounted under the control of the control means An indoor fan motor driving means for driving the air volume of the fan by a predetermined step higher than the selected air volume, and a display means for displaying the air volume of the indoor fan as the selected air volume regardless of whether or not the electric heater is installed according to the control of the control means. When installing the electric heater, increase the air flow level of the indoor fan motor by a certain step to reduce the discharge air volume reduced by the resistance of the electric heater. In addition, the display means displays the air volume selected by the user in the same manner as the existing one to solve the user's dissatisfaction.

Description

Air conditioner control device and method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner equipped with an electric heater, and more particularly, to an apparatus and method for controlling an air conditioner that prevents a reduction in the amount of discharge air generated by mounting an electric heater.

In the conventional air conditioner, as shown in FIG. 1, a suction grill member 5 having a plurality of suction ports 3 through which indoor air is sucked is installed at the front lower part of an indoor main body 1 (hereinafter, referred to as a main body). In addition, a discharge port 7 is formed on the front surface of the main body 1 to discharge the air sucked through the suction port 3 and heat-exchanged with cold or warm air to the room.

In addition, the discharge port 7 is provided with a vertical wind vane 9 for adjusting the direction of the air discharged into the room through the discharge port 7 up and down and the left and right wind vane 11 for adjusting the left and right, the main body On the front surface of (1), the cover member 13 is fixed to the interior of the indoor unit and protects the interior. At the lower side of the cover member 13, the operation mode of the air conditioner (automatic, cooling) , Dehumidification, blowing, heating, etc.) and a start / stop of operation, and an operation unit 15 for adjusting the air volume and the air direction of the air discharged through the discharge port 7.

As shown in FIG. 2, a filter member 17 is installed inside the suction grill member 5 to filter foreign substances such as dust floating in the indoor air sucked through the suction port 3. Inside the filter member 17, a linear indoor heat exchanger 19 is installed to heat-exchange the indoor air filtered by the filter member 17 with cold air by latent heat of evaporation of the refrigerant.

In addition, the upper part of the indoor heat exchanger 19 sucks indoor air through the suction port 3 and simultaneously discharges air heat-exchanged in the indoor heat exchanger 19 to the room through the discharge port 7. A blower fan 23 (hereinafter, referred to as an indoor fan) that rotates as the fan motor 21 is driven is installed, and the suction port is provided at the same time as the indoor fan 23 is covered with an outer side of the indoor fan 23. The duct member 25 which guides the flow of the air which is sucked in through (3) and discharged to the said discharge port 7 is provided.

In addition, an upper portion of the indoor fan 23 is provided with an electric heater 27 for heating by heating the indoor air filtered by the filter member 17 with warm air.

In the above-described air conditioning and air conditioner, the user operates the remote controller or the control unit 15 to press the operation / stop key (hereinafter referred to as the operation key), and then the desired operation mode (for example, cooling) and the set temperature. When Ts is input, the indoor fan 23 is sucked into the main body 1 through the suction port 3 while the indoor fan 23 rotates in response to the driving of the indoor fan motor 21.

The set temperature Ts when the set temperature Ts is lower than the room temperature Tr by comparing the temperature Tr of the indoor air sucked through the suction port 3 with the set temperature Ts. ) And the operating frequency of the compressor 33 is determined according to the difference between the room temperature Tr and the compressor 33.

When the compressor 33 is driven, the refrigerant is compressed by the compressor 33 → the outdoor heat exchanger 39 → the expansion valve 35 → the indoor heat exchanger 19 → the compressor 33, as shown by the solid line in FIG. It is circulated in turn and the indoor heat exchanger 19 starts to cool.

Therefore, the indoor air sucked into the main body 1 through the suction port 3 passes through the indoor heat exchanger 19, and is heat-exchanged with cold air by the latent evaporation of the refrigerant flowing in the indoor heat exchanger 19, The cold air heat exchanged in 19 is guided to the upper part and discharged into the room through the discharge hole 7, and the cold air discharged through the discharge hole 7 is inclined to the wind direction angle of the upper and lower wind vanes 9 and the left and right wind vanes 11. As the wind direction is adjusted up and down or left and right according to the indoor cooling.

On the other hand, when the user selects the heating operation, by comparing the set temperature (Ts) and the room temperature (Tr) when the set temperature (Ts) is higher than the room temperature (Tr) by applying power to the electric heater (27) electric heater (27) is driven.

When the electric heater 27 is driven to generate heat, the discharge air temperature of the electric heater 27 is sensed by a warm air sensor (not shown) to control the driving of the indoor fan motor 21.

If the discharge air temperature of the electric heater 27 is lower than the predetermined temperature, the indoor fan motor 21 is stopped to prevent cold air from being discharged to the room during the initial heating, and the discharge air temperature of the electric heater 27 is constant. If the temperature is higher than or equal, the indoor fan motor 21 is driven.

When the indoor fan motor 21 is driven to rotate the indoor fan 23, the indoor air sucked into the main body 1 through the suction port 3 is heated while passing through the electric heater 27 to be heat-exchanged with warm air. The warm air heat-exchanged by the electric heater 27 is discharged to the room through the discharge port 7, the warm air discharged through the discharge port 7 according to the wind direction angle of the up and down wind vane 9 and the left and right wind vane 11 Indoor heating is performed while the wind direction is adjusted up and down or left and right.

By the way, in the air conditioner equipped with the electric heater 27 as an option for cooling exclusively, since the electric heater 27 is mounted near the discharge port 7, the amount of air discharged by the resistance of the electric heater 27 is There was a problem that the cooling, heating capacity is reduced because it decreases.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and when the electric heater is mounted, the air flow rate of the indoor fan motor is increased by a predetermined step to compensate for the discharge air volume reduced by the resistance of the electric heater, and display means. It is an object of the present invention to provide a control device and method of an air conditioner to solve the user's dissatisfaction by displaying the air volume selected by the user as in the conventional.

In order to achieve the above object, the control device of an air conditioner according to the present invention is an air conditioner having an electric heater for heating air blown by an indoor fan, the heater mounting detection switch for detecting the presence or absence of the electric heater And control means for controlling the driving speed of the indoor fan by determining whether the electric heater is mounted according to the switch signal detected by the heater mounting detecting switch, and when the electric heater is mounted under the control of the control means. Indoor fan motor driving means for driving the air volume of the indoor fan by a predetermined step higher than the selected air flow rate, and display means for displaying the air flow of the indoor fan as the selected air flow regardless of whether or not the electric heater is mounted according to the control of the control means. Characterized in that made.

In addition, the control method of the air conditioner according to the present invention is a heater mounting detection step for detecting the presence or absence of the electric heater, and if the electric heater is mounted in the heater mounting detection step, the air volume of the indoor fan a predetermined step than the selected air volume A first indoor fan driving step of driving up each other and a second indoor fan driving step of driving the air volume of the indoor fan according to the selected air volume when it is detected that the electric heater is not mounted in the heater mounting detection step; It is characterized by consisting of a display step of displaying the air flow of the indoor fan as the selected air flow regardless of the presence or absence.

1 is a perspective view showing an indoor unit of a conventional air conditioner,

2 is a longitudinal sectional view showing an indoor unit of a conventional air conditioner;

3 is a cooling cycle diagram of a conventional air conditioner,

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

5A and 5B are flowcharts showing a control operation procedure of the air conditioner according to the present invention.

<Description of the code | symbol about the principal part of drawing>

3: inlet port 7: outlet port

23: indoor fan 27: electric heater

104: control means 106: heater mounting detection switch

108: room temperature sensing means 120: heater driving means

122: compressor driving means 124: outdoor fan motor driving means

126: indoor fan motor driving means 128: display means

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

About the same part as a conventional structure, the description which overlaps by specifying the same name and the same code | symbol is abbreviate | omitted.

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 required for the operation of the air conditioner, and outputs the same. Is the operation mode of the air conditioner (automatic, cooling, dehumidification, blowing, heating, etc.) and the air volume (strong wind, weak wind, breeze, etc.) and the air direction, set temperature (Ts), air of the air discharged through the discharge port (7) By inputting the operation / stop of the conditioner, the operation operation means 102 is an infrared ray transmitted from a remote control unit in accordance with a key operation of an operation unit 15 provided on the control panel of the main body 1 and a remote controller (not shown). The remote control signal receiver 103 is configured to receive a signal.

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 for controlling the overall operation of the machine, the control means 104 controls the air volume of the indoor fan motor 21 in accordance with the presence or absence of the electric heater 27 is mounted.

The heater mounting detecting switch 106 detects whether the electric heater 27 is mounted, and the indoor temperature detecting means 108 adjusts the indoor temperature to a temperature Ts set by the user by the driving operation means 102. Control and sense the temperature (Tr) of the indoor air sucked through the inlet (3) to perform the heating operation of the air conditioner and outputs to the control means (104).

In addition, the heater driving means 120 receives the control signal output from the control means 104 to heat the indoor air sucked through the suction port (3) to drive control the electric heater 27, compressor driving means Reference numeral 122 is obtained from the control means 104 according to the difference between the temperature Ts set by the user by the driving operation means 102 and the room temperature Tr sensed by the room temperature sensing means 108. The control of the compressor 33 is driven by receiving the output control signal.

The outdoor fan motor driving means 124 is controlled according to the difference between the temperature Ts set by the user by the driving operation means 102 and the room temperature Tr sensed by the indoor temperature detecting means 108. Receiving a control signal output from the means 104 to drive the outdoor fan by controlling the rotation speed of the outdoor fan motor 125 to blow the air heat-exchanged in the outdoor heat exchanger 39 to the outside, and drive the indoor fan motor The means 126 receives the control signal output from the control means 104 in accordance with the air volume set by the user by the driving operation means 102 to indoor the air (cold air) heat exchanged in the indoor heat exchanger 19. By controlling the rotation speed of the indoor fan motor 21 so as to blow into the air drive control the indoor fan (23).

In addition, in the drawing, the display means 128 is a driving selection mode (automatic, cooling, dehumidifying, blowing, heating, etc.) and temperature inputted by the driving operation means 102 under the control of the control means 104; Display the time.

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

5A and 5B are flowcharts showing the control operation procedure of the air conditioner according to the present invention, in which S denotes a step STEP in FIGS. 5A and 5B.

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 inputted from the control means 104 to initialize the air conditioner. In step S2, it is determined whether or not the electric heater 27 is mounted. If detected by the 106, the control means 104 determines whether the electric heater 27 is mounted according to the switch signal detected by the heater mounting detection switch 106.

At this time, when the user operates the operation operation means 102 and presses an operation key, and inputs an operation mode (eg, heating), a set temperature Ts, and a set air volume of a desired air conditioner, 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 S3, the control means 104 determines whether the driving signal is input from the driving operation means 102 while the electric heater 27 is mounted, and if the driving signal is not input (NO day). If the air conditioner is kept in operation standby state, the operation of step S3 or less is repeated.

As a result of the discrimination in step S3, when the operation signal is input (YES), the process proceeds to step S4 where the temperature Tr of the indoor air is sensed by the indoor temperature detecting means 108, and the control means 104 indoors. The analog data of the room temperature Tr sensed by the temperature sensing means 108 is received and converted into digital to determine whether the set temperature Ts is greater than or equal to the room temperature Tr.

As a result of the determination in step S4, when the set temperature Ts is less than the room temperature Tr (NO), there is no need to heat the room, and the operation below step S4 is continued while detecting the room temperature Tr. If the set temperature Ts is equal to or higher than the room temperature Tr (YES), the control means 104 drives the indoor fan motor to drive the control signal for driving the indoor fan motor 21. Output to the means 126.

Therefore, the indoor fan motor driving means 126 drives the indoor fan 23 by controlling the rotation speed of the indoor fan motor 21 according to the set air volume.

When the indoor fan 23 is driven, in step S6 it is determined whether a predetermined time has elapsed after the indoor fan motor 21 is driven, and when the predetermined time has not elapsed (NO), the process returns to step S5. The operation of step S5 or less is repeated until the predetermined time elapses.

As a result of the discrimination in step S6, when a predetermined time has elapsed (YES), the control means 104 outputs a control signal for driving the electric heater 27 to the heater driving means 120 when the predetermined time has elapsed (YES). do.

Accordingly, the heater driving means 120 supplies the power voltage applied to the electric heater 27 under the control of the control means 104 to drive the electric heater 27.

When the electric heater 27 is driven to generate heat, when the indoor air sucked through the suction port 3 is heated while passing through the electric heater 27 and heat-exchanged with warm air, the air heat-exchanged with the warm air in the electric heater 27. Starts the heating operation to heat the room while the wind direction is adjusted up and down or left and right according to the wind direction angle of the up and down wind vane 9 and the left and right wind vane 11 rotatably installed in the discharge port (7).

On the other hand, during the heating operation, the indoor air is heat-exchanged by driving the electric heater 27. In the cooling operation, the compressor 33 is driven by determining the operating frequency of the compressor 33 according to the difference between the set temperature Ts and the room temperature Tr without driving the electric heater 27, so that the suction port 3 is operated. The indoor air sucked through is heat-exchanged with cold air through the indoor heat exchanger (19), and the air heat-exchanged with cold air in the indoor heat exchanger (19) is rotated up and down wind vanes (9) and left and right wind directions installed to the discharge port (7). While the wind direction is adjusted up and down or left and right according to the wind direction angle of the wing 11 starts to perform a cooling operation to cool the room.

When the air conditioner is operated as described above, in step S8, the control means 104 determines whether the breeze is selected by the air flow selection key of the operation operation means 102, and when the breeze is not selected (NO). In step S8, the operation of step S8 or less is repeated while driving the indoor fan 23 in accordance with the set air volume.

As a result of the discrimination in step S8, when the breeze is selected (YES), the control means 104 controls the indoor fan motor driving means 126 to raise the indoor fan 23 one step higher than the breeze. Operate in low wind and display the breeze operation in the same manner as before through the display means 128 to compensate for the reduction in the discharge air volume reduced by the air resistance according to the installation of the electric heater 27, while preventing confusion on the user. Can be.

Subsequently, in step S10, the control means 104 determines whether weak air is selected by the air volume selection key of the driving operation means 102, and returns to the step S9 if no weak air is selected (NO). The following operation is repeated.

As a result of the discrimination in step S10, when the weak wind is selected (YES), the control means 104 controls the indoor fan motor driving means 126 to raise the indoor fan 23 one step higher than the weak wind. Drive in a strong wind, and the display means 128 to display a weak wind operation as in the conventional.

Subsequently, in step S12, the control means 104 determines whether the strong wind is selected by the air volume selection key of the operation operation means 102, and when the strong wind is not selected (NO), the control means 104 returns to the step S11, and the step S11. The following operation is repeated.

As a result of the discrimination in step S12, when a strong wind is selected (YES), the control means 104 controls the indoor fan motor driving means 126 to raise the indoor fan 23 one step higher than the strong wind. The vehicle is operated by turbo, and the high wind driving is displayed in the same manner as before through the display means 128.

Subsequently, in step S14, the control means 104 determines whether the turbo is selected by the air flow selection key of the driving operation means 102, and if no turbo is selected (NO), the control means 104 returns to the step S13, and step S13. The following operation is repeated.

As a result of the determination in step S14, when turbo is selected (YES), the control means 104 controls the indoor fan motor driving means 126 to drive the indoor fan 23 by turbo, The display means 128 returns while displaying the turbo operation in the same manner as before.

On the other hand, when the determination result in step S2 indicates that the electric heater 27 is not mounted (NO), the flow advances to step S21, whereby the control means 104 operates a signal in a state where the electric heater 27 is not mounted. Is inputted, and when the operation signal is not input (NO), the operation of step S21 or less is repeated while the air conditioner is kept in the operation standby state.

As a result of the discrimination in step S21, when the operation signal is input (YES), the process proceeds to step S22 where the temperature Tr of the indoor air is sensed by the indoor temperature detecting means 108 so that the set temperature Ts is the room temperature. (Tr) It is determined whether it is abnormal.

As a result of the determination in step S22, if the set temperature Ts is less than the room temperature Tr (NO), there is no need to heat the room, and the operation below step S22 is continued while detecting the room temperature Tr. When the set temperature Ts is equal to or higher than the room temperature Tr (YES), the control means 104 controls the number of revolutions of the indoor fan motor 21 according to the set air volume. The fan 23 is driven.

When the indoor fan 23 is driven, in step S24 it is determined whether a predetermined time has elapsed after the indoor fan motor 21 is driven, and when the predetermined time has not elapsed (NO), the process returns to step S23. The operation of step S23 or below is repeated until the predetermined time elapses.

As a result of the discrimination in step S24, when a predetermined time has elapsed (YES), the flow advances to step S25, and the control means 104 controls the heater driving means 120 to drive the electric heater 27.

When the electric heater 27 is driven to generate heat, when the indoor air sucked through the suction port 3 is heated while passing through the electric heater 27 and heat-exchanged with warm air, the air heat-exchanged with the warm air in the electric heater 27. Starts the heating operation to heat the room while the wind direction is adjusted up and down or left and right according to the wind direction angle of the up and down wind vane 9 and the left and right wind vane 11 rotatably installed in the discharge port (7).

At the time of operation of the above air conditioner, in step S26, it is determined whether the breeze is selected by the air flow selection key of the operation operation means 102, and if the breeze is not selected (NO), the indoor air is The operation of step S26 or below is repeatedly performed while driving the fan 23.

As a result of the discrimination in step S26, when the breeze is selected (YES), the control means 104 controls the indoor fan motor driving means 126 to drive the indoor fan 23 in the breeze, The display unit 128 displays the breeze driving operation. In step S28, it is determined whether the weak wind is selected by the air volume selection key. If the weak wind is not selected (NO), the process returns to the step S27 and the step S27 or less. Repeat the operation.

As a result of the discrimination in step S28, in the case of selecting the weak wind (YES), the control means 104 controls the indoor fan motor driving means 126 to drive the indoor fan 23 in the mild wind. The display unit 128 displays the weak wind operation. In step S30, it is determined whether the strong wind is selected by the air volume selection key. If the strong wind is not selected (NO), the process returns to the step S29 and the step S29 or less. Repeat the operation.

As a result of the discrimination in step S30, when the strong wind is selected (YES), the control means 104 controls the indoor fan motor driving means 126 to drive the indoor fan 23 in the strong wind, The display means 128 displays the strong wind operation. In step S32, it is determined whether or not the turbo is selected by the air volume selection key. If no turbo is selected (NO), the flow returns to the step S31 and the step S31 or less. Repeat the operation.

As a result of the determination in step S32, when turbo is selected (YES), the control means 104 controls the indoor fan motor driving means 126 to drive the indoor fan 23 by turbo, The display means 128 returns while displaying the turbo operation.

As described above, according to the control apparatus and method of the air conditioner according to the present invention, when the electric heater is mounted, the air flow rate of the indoor fan motor is increased by a predetermined step to compensate for the discharged air volume reduced by the resistance of the electric heater. In addition, the display means has the effect of solving the user's dissatisfaction by displaying the air flow selected by the user in the same manner as before.

Claims (2)

An air conditioner having an electric heater for heating air blown by an indoor fan, A heater mounting detecting switch detecting whether the electric heater is mounted; Control means for controlling the driving speed of the indoor fan by determining whether the electric heater is mounted according to the switch signal detected by the heater mounting detecting switch; An indoor fan motor driving means for driving the air volume of the indoor fan by a predetermined step when the electric heater is mounted under the control of the control means; And a display means for displaying the air volume of the indoor fan as the selected air volume regardless of whether the electric heater is mounted according to the control of the control means. Heater mounting detection step for detecting the presence of electric heater, A first indoor fan driving step of driving the air volume of the indoor fan by increasing the air volume of the indoor fan by a predetermined step if the electric heater is detected in the heater mounting detection step; A second indoor fan driving step of driving the air volume of the indoor fan according to the selected air volume when it is detected that the electric heater is not mounted in the heater mounting detection step; And a display step of displaying the air volume of the indoor fan as the selected air volume regardless of whether or not the electric heater is installed.

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