KR20060039308A - Air conditioner and operation control method thereof - Google Patents

Abstract

The present invention relates to a three-stage discharge type air conditioner having a plurality of compressors and a method for controlling the operation thereof, wherein the operating temperature of the compressor is adjusted according to the difference between the room temperature and the set temperature to control the room temperature to reach the set temperature quickly. will be.

To this end, the present invention, in the control method of the air conditioner having a plurality of compressors, the user selects the desired operation mode, and detects the room temperature to calculate the temperature difference with the set temperature, and the calculated temperature difference If the temperature difference is greater than the second predetermined temperature compared to the first and second predetermined temperatures, all the plurality of compressors are driven regardless of the selected operation mode. If the temperature difference is greater than the first predetermined temperature and less than the second predetermined temperature, the selected operation is performed. Depending on the mode, the plurality of compressors are selectively driven.

Description

Air conditioner and operation control method

1 is a perspective view showing an indoor unit of a three-discharge type air conditioner according to the present invention,

2 is a refrigerant cycle diagram of an air conditioner according to the present invention;

3 is a block diagram of an operation control apparatus of an air conditioner according to an embodiment of the present invention;

4 is an operation flowchart of a solo operation control method of an air conditioner according to the present invention;

5 is a flowchart illustrating a method of controlling a couple operation of an air conditioner according to the present invention.

Explanation of symbols on the main parts of the drawings

10: indoor unit 14, 16, 18: discharge port

14a, 16a, 18a: blade 30: outdoor unit

31a, 31b: Compressor A, B 100: Signal input part

110: room temperature detection unit 120: control unit

130: compressor driving unit 170: blade driving unit

The present invention relates to a three-stage discharge type air conditioner having a plurality of compressors, and more particularly, to an air conditioner for adjusting the operating capacity of a compressor according to a difference between an indoor temperature and a set temperature, and a method for controlling the operation thereof.

In general, there is a Republic of Korea Patent Publication No. 2002-0075603 in the air conditioner having a plurality of (for example two) compressor to adjust the cooling capacity.

The air conditioner disclosed in the publication includes two compressors having different capacities, and determines the cooling load according to the operating time of the compressor, and adjusts the cooling capacity by varying the compression capacity of the compressor according to the determined cooling load. Reduction and proper temperature control.

However, the control method of the conventional air conditioner, regardless of the difference between the room temperature and the set temperature is large and small, if the room temperature is higher than the set temperature + 1 ℃, the current compressor capacity is started as it is, the room temperature reaches the set temperature In this case, if the difference between the room temperature and the set temperature occurs by turning off the compressor, it takes a long time to reach the set temperature, and because the direction of the discharged air is fixed in only one direction (for example, the front), There was a problem that can not control evenly.

Therefore, the present invention is to solve the conventional problems as described above, an object of the present invention is to adjust the operating capacity of the compressor according to the difference between the room temperature and the set temperature air conditioner that can quickly reach the desired set temperature And an operation control method thereof.

Another object of the present invention is to provide an air conditioner and an operation control method for controlling a large space evenly through control of a plurality of discharge ports when adjusting the operation capacity of the compressor.

In order to achieve the above object, the operation control method of an air conditioner according to the present invention includes a control method of an air conditioner having a plurality of compressors. The temperature difference is calculated, and when the temperature difference is greater than or equal to the second predetermined temperature by comparing the calculated temperature difference with the first predetermined temperature, the plurality of compressors are driven to adjust the operating capacity.

If the temperature difference is greater than or equal to a first predetermined temperature and less than a second predetermined temperature, selectively driving the plurality of compressors according to the selected operation mode; The first predetermined temperature is about 0 ° C. or more, and the second predetermined temperature is about 3 ° C. or more.

When the indoor temperature reaches the set temperature by driving all of the plurality of compressors, the operation capacity of the compressor may be returned according to the selected operation mode.

In addition, the present invention provides a control method of an air conditioner having a plurality of discharge ports, by detecting the indoor temperature to calculate a temperature difference from the set temperature, and comparing the calculated temperature difference with the first and second predetermined temperature If the temperature difference is greater than or equal to the second predetermined temperature, the plurality of discharge ports are controlled to be opened.

When the temperature difference is greater than or equal to the first predetermined temperature and less than the second predetermined temperature, the plurality of discharge ports may be selectively opened according to the selected operation mode.                     

The plurality of discharge ports may be opened to close the plurality of discharge ports in accordance with the selected operation mode when the room temperature reaches the set temperature.

In addition, the present invention provides a control method of an air conditioner for discharging air heat exchanged by a plurality of compressors through a plurality of discharge ports, by detecting the indoor temperature to calculate a temperature difference from the set temperature, the predetermined temperature difference When the temperature difference is greater than the second predetermined temperature compared to the first and second predetermined temperatures, all of the plurality of compressors are driven to adjust the operating capacity, and when the temperature difference is greater than or equal to the second predetermined temperature, all of the plurality of discharge ports are opened. It is characterized by controlling the flow of discharged air.

When the temperature difference is greater than or equal to the first predetermined temperature and less than the second predetermined temperature, the plurality of compressors are selectively driven according to the selected operation mode, and the plurality of discharge ports are selectively opened.

The present invention provides an air conditioner having a plurality of compressors, comprising: a signal input unit for selecting an operation mode; A temperature sensing unit sensing an indoor temperature; And a control unit for controlling all of the plurality of compressors to increase the operating capacity regardless of the selected operation mode if the calculated temperature difference is calculated by comparing the detected indoor temperature with a set temperature. It features.

The present invention further includes a plurality of discharge ports and a plurality of blades for opening and closing the plurality of discharge ports; The controller may control the plurality of blades to open all of the plurality of discharge ports when the temperature difference is greater than or equal to a predetermined temperature.

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

1 is a perspective view showing an indoor unit of a three-discharge type air conditioner according to the present invention.

In FIG. 1, the indoor unit 10 has a plurality of discharge ports 14, 16, and 18 formed at a lower side of a side surface to suck indoor air, and the air sucked through the suction port 12 is discharged back into the room. ) Is formed at the top.

The plurality of discharge ports 14, 16 and 18 may include a left discharge port 14 formed on an upper left side of the indoor unit 10, a right discharge port 16 formed on an upper right side of the indoor unit 10, and an indoor unit 10. It is a three-surface discharge port comprised of the central discharge port 18 formed in the front center.

Blades 14a, 16a, and 18a are installed in the plurality of discharge ports 14, 16, and 18, respectively, and drives for driving the respective blades 14a, 16a, and 18a in the blades 14a, 16a, and 18a. Each motor is installed.

The blades 14a, 16a, and 18a adjust the direction of the air discharged through the plurality of discharge ports 14, 16, and 18 according to the change of the dispersion angle in the rotational section (0 ° to 70 °). Each discharge port 14, 16, 18 is opened and closed according to the position of the default angle.

An indoor heat exchanger (20) for heat-exchanging the indoor air sucked through the inlet (12) with cold or warm air by evaporative latent heat of the refrigerant, and air exchanged with the indoor heat exchanger (20). An indoor fan 22 for blowing air is installed.

2 is a refrigerant cycle diagram of an air conditioner according to the present invention.

In FIG. 2, the air conditioner of the present invention includes an outdoor unit 30 forming a normal refrigerant cycle, and an indoor unit 10 connected to the outdoor unit 30 to perform indoor cooling and heating, and the indoor unit 10 and the outdoor unit ( Between 30) a refrigerant pipe is installed.

The outdoor unit 30 includes a plurality of compressors 31a and 31b for compressing a refrigerant into a gaseous state of high temperature and high pressure, and a flow of the high temperature and high pressure gas refrigerant compressed by the compressors 31a and 31b. Four-way valve 32 for adjusting the direction according to the operation mode (cooling or heating), and an outdoor heat exchanger 33 for receiving heat and high-pressure gas refrigerant compressed by the compressor (31a, 31b) and heat exchange with the outdoor air; , An outdoor fan 34 forcibly blowing outdoor air by the outdoor fan motor 35 so that heat exchange is performed in the outdoor heat exchanger 33, an expansion valve 36 for decompressively expanding the heat exchanged refrigerant, and an expansion valve for heating. 37, a one-way valve 38 for bypassing the refrigerant only in one direction, and an accumulator 39 for converting the refrigerant flowing into the compressors 31a and 31b into gas in a completely gaseous state.

In the present invention, the plurality of compressors 31a and 31b are used as two compressors A and B 31a and 31b having different capacities, but the present invention is not limited thereto. It is also possible to use more than one compressor.

In the case where the air conditioner having the indoor unit 10 and the outdoor unit 30 configured as described above is used for both heating and cooling, the four-way valve 32 is turned on during heating so that the refrigerant is shown in the dotted arrow direction of FIG. 2. A, B (31a, 31b) → Four-way valve 32 → Indoor heat exchanger 20 → Expansion valve 36 → Heating expansion valve 37 → Outdoor heat exchanger 33 → Four-way valve 32 → Accumulator 39) → A refrigerant cycle circulated in the order of compressors A and B (31a and 31b) is formed.                     

On the other hand, during cooling, the four-way valve 32 is turned off so that the refrigerant is shown in the direction of the solid arrow in FIG. 2. The compressors A and B (31a and 31b) → four-way valve 32 → outdoor heat exchanger 33 → The refrigerant cycle circulated in the order of one-way valve 38 → expansion valve 36 → indoor heat exchanger 20 → four-way valve 32 → accumulator 39 → compressors A and B (31a, 31b).

3 is a block diagram of the operation control device of the air conditioner according to an embodiment of the present invention, the signal input unit 100, the indoor temperature detection unit 110, the control unit 120, the compressor driving unit 130, the outdoor fan The driving unit 140, the indoor fan driving unit 150, the four-way valve driving unit 160, the blade driving unit 170, and the display unit 180 are configured to be included.

The signal input unit 100 includes an operation unit for inputting operation information such as an operation mode selected by a user (cooling, heating, solo, couple, family operation, etc.), a set temperature (Ts), a set air volume, and the like. The temperature detector 110 detects a temperature Tr of indoor air sucked into the indoor unit 10.

The solo operation sets an operating capacity of 40% for driving only the compressor B 31b, the couple operation sets an operating capacity of 60% for driving only the compressor A 31a, and the family operation sets the compressor A. It is to set a driving capacity of 100% for driving both B (31a, 31b).

The controller 120 selectively controls driving of the compressors A and B 31a and 31b by adjusting an operating capacity (cooling capacity) according to solo, couple, or family operation selection, and the indoor unit 10 microcomputer or outdoor unit ( 30) Includes a microcomputer, and compares the indoor temperature and the set temperature to reduce the operating capacity when the temperature difference is small, and to control the air discharged through the plurality of discharge ports (14, 16, 18) while increasing the operating capacity when the temperature difference is large do.                     

The compressor driver 130 controls the driving of the compressors A and B 31a and 31b according to the compressor control signal of the controller 120, and the outdoor fan driver 140 controls the outdoor fan of the controller 120. As a result, the driving of the outdoor fan 34 is controlled.

The indoor fan driver 150 controls the driving of the indoor fan 22 according to the indoor fan control signal of the controller 120, and the four-way valve driver 160 is operated from the signal input unit 100 (cooling mode). Or on / off control of the four-way valve 32 according to the valve control signal of the controller 120 to switch the refrigerant cycle to cooling or heating according to heating.

The blade driver 170 selectively opens and closes the plurality of discharge ports 14, 16, and 18 according to an operation mode (solo, couple, family) input from the signal input unit 100, and selectively opens each of them. The drive motor swings the plurality of blades 14a, 16a, and 18a in a predetermined angle range according to the blade control signal of the controller 120 to adjust the direction of air discharged through the discharge ports 14, 16 and 18.

The blade driving unit 170 cross swings the left and right blades 14a and 16a installed in the left and right discharge ports 14 and 16 among the plurality of discharge holes 14, 16 and 18 in the range of 30 to 70 °, and the center discharge hole 18. Control to swing the central blade (18a) installed in the 50 ~ 130 ° range.

The drive motor is a plurality of stepping motors installed in the respective blades 14a, 16a, 18a to individually drive the plurality of blades 14a, 16a, 18a installed in the respective discharge ports 14, 16, 18, The plurality of blades 14a, 16a, 18a rotate by a predetermined angle in accordance with the rotation amount of the drive motor.                     

On the other hand, if the drive motor uses a variable reluctance type stepping motor with excellent rotation angle resolution, the swing mode requiring continuous direction change as well as the stepwise direction change of the blades 14a, 16a, and 18a. It can be implemented freely, in addition to any power device can be used if it is possible to implement the stepwise and continuous direction change of the blade (14a, 16a, 18a).

The display unit 180 displays an operation state and an error mode of the air conditioner according to the display control signal of the controller 120, and visually displays the directions of the blades 14a, 16a, and 18a, which are gradually changed. It allows the user to know the direction of the current blades 14a, 16a, 18a.

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

4 is an operation flowchart of a solo operation control method of an air conditioner according to the present invention, and FIG. 5 is an operation flowchart of a couple operation control method of an air conditioner according to the present invention.

As an initial condition for explaining the operation of the present invention, the plurality of discharge ports 14, 16, 18 formed on the left and right sides and the center of the indoor unit 10 are completely closed by the blades 14a, 16a, 18a.

The operation control method of the air conditioner according to the present invention includes the steps of opening the left and right discharge ports (14, 16) according to the selected operation mode (solo or couple operation) (S100 ~ S120) (S300 ~ S320); Detecting an indoor temperature (Tr) and determining whether the indoor temperature (Tr) is set temperature (Ts) + 1 ° C. or more (S130) (S330); Determining whether the room temperature Tr is equal to or higher than the set temperature Ts + 4 ° C. if the room temperature Tr is equal to or higher than the set temperature Ts + 1 ° C. (S140 and S340); If the indoor temperature (Tr) is above the set temperature (Ts) + 4 ℃ step to change the family operation to increase the operating capacity to 100% by turning on the compressor A, B (31a, 31b) (S150 ~ S160) (S350 ~ S360); Turning off the compressors A and B (31a and 31b) when the room temperature Tr reaches the set temperature Ts according to the family operation (S170 to S190) (S370 to S390); Performing a solo or couple operation by selectively turning on only the compressor B 31b or the compressor A 31a when the room temperature Tr is above the set temperature Ts + 1 ° C. and below the set temperature Ts + 4 ° C. (S200) and (S400); Selectively turning off the compressor B 31b or the compressor A 31a when the room temperature Tr reaches the set temperature Ts according to the solo or couple operation (S210 to S220) (S410 to S420). do.

The operation process of the solo operation control method of the air conditioner configured as described above will be described in more detail with reference to FIG. 4, such as an operation mode (for example, solo operation) selected by the user, a set temperature (Ts), and a set air volume. The driving information is input to the control unit 120 through the signal input unit 100 (S100).

Therefore, the control unit 120 determines whether the operation is on (S110), and when the operation is on, the control unit 120 controls the blade driving unit 170 and the left and right blades 14a and 16a installed on the left and right sides of the indoor unit 10. Rotate

As the left and right blades 14a and 16a rotate as the left and right blades 14a and 16a rotate, the left and right blades 14a and 16a cross swing in a predetermined range of 30 to 70 ° (S120).

Subsequently, as the indoor fan 22 is driven by the set air volume input from the signal input unit 100, the indoor temperature sensing unit 110 senses the temperature Tr of the indoor air sucked into the indoor unit 10 and controls the controller ( 120, the control unit 120 compares the room temperature Tr input from the room temperature sensing unit 110 with the set temperature Ts, so that the room temperature Tr is equal to or greater than the set temperature Ts + 1 ° C. The authorization is determined (S130).

If the room temperature Tr is above the set temperature Ts + 1 ° C. (YES), the controller 120 once again determines whether the room temperature Tr is above the set temperature Ts + 4 ° C. (S140).

This compares the room temperature Tr with the set temperature Ts and drives only the compressor B 31b in the operation mode selected by the user (solo operation) when the temperature difference is small. When the temperature difference is large, it operates the operation mode (solo operation). It is to determine how much the temperature difference is to shorten the time to reach the set temperature Ts by increasing the operating capacity of the compressors A and B (31a, 31b) to 100%, regardless of

If the room temperature Tr is above the set temperature Ts + 4 ° C. (YES), the controller 120 controls the blade driving unit 170 to control a large space more quickly by controlling the direction of the discharged air at various angles. The center blade 18a installed in the center of the indoor unit 10 is rotated.

As the central discharge port 18 is opened according to the rotation of the central blade 18a, the central blade 18a swings in a predetermined range of 50 to 130 ° (S150).

Subsequently, the controller 120 operates the compressor driver 130 to perform a family operation to increase the operating capacity of the compressors A and B 31a and 31b to 100% regardless of the operation mode selected by the user (eg, solo operation). The control is performed to drive the compressors A and B 31a and 31b on with a predetermined delay time (S160).

According to the on-driving of the compressors A and B 31a and 31b, the time at which the room temperature Tr reaches the set temperature Ts becomes faster, and the changing room temperature Tr is the set temperature Ts. If lower (YES), the central discharge port 18 is closed in accordance with the rotation of the center blade (18a), the compressors A, B (31a, 31b) are all turned off (S170 ~ S190), and then the solo operation in the original operation mode Return to the system

On the other hand, if the determination result in step S140, the room temperature (Tr) is not more than the set temperature (Ts) + 4 ° C (NO) control unit 120 according to the operation mode selected by the user (for example, solo operation) compressor driving unit The controller 130 is controlled to drive only the compressor B 31b (S200).

When the room temperature Tr, which changes according to the on-driving of the compressor B 31b, reaches the set temperature Ts (YES), the compressor B 31b is turned off again (S210 to S220).

After that, when the compressors A and B 31a and 31b are turned off, when the room temperature Tr becomes high again and becomes the set temperature Ts + 1 ° C. or more, the room temperature Tr becomes the set temperature Ts + 4 ° C. Judging once again whether it is abnormal or not, if the set temperature (Ts) + 4 ℃ or more, 100% family operation is performed to increase the operating capacity of compressors A and B (31a, 31b), and the set temperature (Ts) + 4 ℃ or more If not, the solo operation of 40% of the operation capacity of the currently selected compressor B 31b is continuously performed.

Next, the operation process of the couple operation control method of the air conditioner will be described in more detail with reference to FIG. 5, such as an operation mode (for example, a couple operation) selected by the user, a set temperature (Ts), a set air volume, and the like. The driving information is input to the control unit 120 through the signal input unit 100 (S300).                     

Therefore, the control unit 120 determines whether the operation is on (S310), and when the operation is on, the control unit 120 controls the blade driving unit 170 and the left and right blades 14a and 16a installed on the left and right sides of the indoor unit 10. Rotate

As the left and right blades 14a and 16a are rotated as the left and right blades 14a and 16a rotate, the left and right blades 14a and 16a cross swing in a predetermined range of 30 to 70 ° (S320).

Meanwhile, in the present invention, the left and right discharge ports 14 and 16 are opened during the couple operation, but the center discharge port 18 may be opened or both the left and right side and the center discharge ports 14, 16 and 18 may be opened.

Subsequently, as the indoor fan 22 is driven by the set air volume input from the signal input unit 100, the indoor temperature sensing unit 110 senses the temperature Tr of the indoor air sucked into the indoor unit 10 and controls the controller ( 120, the control unit 120 compares the room temperature Tr input from the room temperature sensing unit 110 with the set temperature Ts, so that the room temperature Tr is equal to or greater than the set temperature Ts + 1 ° C. The authorization is determined (S330).

If the room temperature Tr is equal to or higher than the set temperature Ts + 1 ° C. (YES), the controller 120 once again determines whether the room temperature Tr is equal to or higher than the set temperature Ts + 4 ° C. (S340).

This compares the indoor temperature Tr with the set temperature Ts and drives only the compressor A 31a in the operation mode selected by the user (couple operation) when the temperature difference is small, and when the temperature difference is large, the operation mode (couple operation). It is to determine how much the temperature difference is to shorten the time to reach the set temperature Ts by increasing the operating capacity of the compressors A and B (31a, 31b) to 100%, regardless of                     

If the room temperature Tr is above the set temperature Ts + 4 ° C. (YES), the controller 120 controls the blade driving unit 170 to control a large space more quickly by controlling the direction of the discharged air at various angles. The center blade 18a installed in the center of the indoor unit 10 is rotated.

As the central discharge port 18 is opened according to the rotation of the central blade 18a, the central blade 18a swings in a predetermined range of 50 to 130 ° (S350).

Subsequently, the controller 120 operates the compressor driver 130 to perform a family operation of increasing the operating capacity of the compressors A and B 31a and 31b to 100% regardless of the operation mode selected by the user (eg, a couple operation). The control is performed to drive the compressors A and B 31a and 31b on with a predetermined delay time (S360).

According to the on-driving of the compressors A and B 31a and 31b, the time at which the room temperature Tr reaches the set temperature Ts becomes faster, and the changing room temperature Tr is the set temperature Ts. If lower (YES), the center discharge port 18 is closed in accordance with the rotation of the center blade 18a, and the compressors A and B (31a and 31b) are all turned off (S370 to S390). Return to the system

As a result of the determination in step S340, if the room temperature Tr is not equal to or higher than the set temperature Ts + 4 ° C. (NO), the controller 120 controls the compressor driver 130 according to an operation mode selected by the user (eg, a couple operation). ) Is controlled to drive only the compressor A (31a) (S400).

When the room temperature Tr, which changes according to the on-driving of the compressor A 31a, reaches the set temperature Ts (YES), the compressor A 31a is turned off again (S410 to S420).                     

After that, when the compressors A and B 31a and 31b are turned off, when the room temperature Tr becomes high again and becomes the set temperature Ts + 1 ° C. or more, the room temperature Tr becomes the set temperature Ts + 4 ° C. Judging once again whether it is abnormal or not, if the set temperature (Ts) + 4 ℃ or more, 100% family operation is performed to increase the operating capacity of the compressors A and B (31a, 31b), and the set temperature (Ts) + 4 ℃ or more If not, the couple operation of 60%, which is the operating capacity of the currently selected compressor A 31ab, is continuously performed.

Meanwhile, in the present invention, the air conditioner employing two compressors A and B 31a and 31b has been described as an example. However, the present invention is not limited thereto, and two or more compressors may be used.

In addition, the present invention has been described with an example of increasing the operating capacity of the compressors A, B (31a, 31b) when the difference between the room temperature (Tr) and the set temperature (Ts) is more than a certain temperature during solo or couple operation, the present invention Of course, the operation capacity of the compressors A and B (31a, 31b) can be lowered when the difference between the room temperature (Tr) and the set temperature (Ts) is below a certain temperature during the family operation.

What has been described above is just one embodiment for implementing the air conditioner and the operation control method according to the present invention, the present invention is not limited to the above-described embodiment, the technical spirit of the present invention Various modifications are possible by those skilled in the art.

As described above, according to the air conditioner and the operation control method according to the present invention, by adjusting the operating capacity of the compressor in multiple stages according to the difference between the room temperature and the set temperature, when the temperature difference is small, the power consumption is lowered When the temperature difference is large, the operating capacity is increased, so that the desired temperature can be reached quickly.

In addition, the present invention has the effect that it is possible to control the space of the air discharged through the plurality of discharge ports at the same time to adjust the operating capacity of the compressor at various angles to control the wider space more evenly and always have a comfortable air conditioning.

Claims (12)

In a control method of an air conditioner having a plurality of compressors, Select the car mode you want, Detects the room temperature and calculates the temperature difference from the set temperature. And comparing the calculated temperature difference with a first predetermined temperature and a second predetermined temperature, and when the temperature difference is greater than or equal to a second predetermined temperature, driving the plurality of compressors to adjust an operating capacity. The method of claim 1, And operating the plurality of compressors selectively according to the selected operation mode when the temperature difference is greater than or equal to the first predetermined temperature and less than the second predetermined temperature. The method of claim 1, And driving all of the plurality of compressors to return the operating capacity of the compressor to the selected operation mode when the room temperature reaches the set temperature. The method of claim 1, Wherein the first predetermined temperature is about 0 ° C. or more, and the second predetermined temperature is about 3 ° C. or more. In the control method of an air conditioner having a plurality of discharge ports, Detects the room temperature and calculates the temperature difference from the set temperature. And comparing the calculated temperature difference with a first predetermined temperature and a second predetermined temperature and controlling to open the plurality of discharge ports when the temperature difference is greater than or equal to a second predetermined temperature. The method of claim 5, And if the temperature difference is greater than or equal to the first predetermined temperature and less than the second predetermined temperature, selectively opening the plurality of discharge ports in accordance with the selected operation mode. The method of claim 5, And opening all of the plurality of discharge ports to close the plurality of discharge ports according to a selected operation mode when the room temperature reaches a set temperature. In the control method of the air conditioner for discharging the air heat exchanged by the plurality of compressors through the plurality of discharge ports, Select the car mode you want, Detects the room temperature and calculates the temperature difference from the set temperature. Comparing the calculated temperature difference with a first predetermined temperature and a second predetermined temperature, and if the temperature difference is greater than or equal to a second predetermined temperature, the air conditioner increases driving capacity by driving all the plurality of compressors regardless of the selected operation mode. Operation control method. The method of claim 8, And controlling the flow of the discharged air by opening all of the plurality of discharge ports regardless of the selected operation mode when the temperature difference is greater than or equal to the second predetermined temperature. The method of claim 8, When the temperature difference is greater than or equal to the first predetermined temperature and less than the second predetermined temperature, selectively driving the plurality of compressors according to the selected operation mode and selectively opening the plurality of discharge ports. Control method. In an air conditioner having a plurality of compressors, A signal input unit for selecting an operation mode; A temperature sensing unit sensing an indoor temperature; And A control unit for controlling all of the plurality of compressors to increase the operating capacity regardless of the selected operation mode if the calculated temperature difference is calculated by comparing the detected indoor temperature with a set temperature; Air conditioner comprising a. The method of claim 11, A plurality of discharge ports, A plurality of blades for opening and closing the plurality of discharge ports; And the control unit controls the plurality of blades to open all of the plurality of discharge ports regardless of the selected operation mode when the temperature difference is greater than or equal to a predetermined temperature.

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