JPH08226694A - Operation control device of air conditioner and its control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep indoor temperature in a comfortable state by controlling the direction and the flow of wind blasted into a room according to the height of an indoor unit from a floor surface. SOLUTION: An ultrasonic sensor 50 of a position sensor detects the distance of an indoor unit 1 from a floor surface and outputs the detected distance data to a control means 30. A compressor drive means 60 controls driving of a compressor 61, based on the difference between a user set up temperature and a detected indoor temperature. A louver motor control means 70 controls the direction of air flow blasted through a discharge opening 3 according to the set up direction of wind, and controls driving of a louver motor 71 according to the signal from the control means 30 so as to keep the indoor temperature constant, based on the detected separating distance. An indoor fan motor drive means 80 controls and drives an indoor fan according to the signal from the control means 30 to below the air heat exchanged by an indoor heat exchanger into the inside of the room according to the flow which is set up.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control device for an air conditioner capable of maintaining the indoor temperature in a comfortable state by adjusting the wind direction and volume of the air discharged into the room, depending on the installed position of the indoor unit. Regarding the control method.

[0002]

2. Description of the Related Art Generally, in a conventional air conditioner,
When the operation switch is turned on after setting the temperature desired by the user, the indoor fan is driven under the control of the control means. As a result, the indoor temperature changes, and the indoor temperature sensing means senses the changing indoor temperature.

At this time, the control means compares the room temperature data sensed by the room temperature sensing means with desired temperature data set by the user.

As a result of this comparison, the control means drives the outdoor unit (compressor, outdoor fan) by determining the operating frequency of the compressor and the rotation speed of the outdoor fan according to the difference between the indoor temperature and the desired temperature.

That is, during the heating operation of the air conditioner, when the room temperature is lower than the desired temperature, the compressor and the outdoor fan are driven to increase the room temperature, and when the room temperature is higher than the desired temperature, the compressor is operated. Then, the indoor fan was stopped to lower the room temperature to heat the room.

On the other hand, during the cooling operation of the air conditioner, when the room temperature is higher than the desired temperature, the compressor and the outdoor fan are driven to lower the room temperature, and when the room temperature is lower than the desired temperature, the compression is performed. The indoor cooling was performed by stopping the machine and the outdoor fan to raise the indoor temperature.

[0007]

However, in such a system, the position where the indoor unit is installed is not taken into consideration, and only the temperature of the air taken in through the suction port of the indoor unit is detected as the indoor temperature. Therefore, there is a problem that the indoor temperature cannot be maintained in a comfortable state as a result because the entire indoor temperature cannot be accurately grasped due to the temperature deviation of each predetermined area in the room.

The present invention has been made to solve the above problems, and an object of the present invention is to accurately measure the total temperature in a room regardless of the position where the indoor unit is installed. To provide an operation control device for an air conditioner and a control method thereof that can hold a room temperature uniformly and provide a comfortable indoor environment by gripping and adjusting the wind direction and volume of the air discharged into the room. is there.

[0009]

SUMMARY OF THE INVENTION An operation control device for an air conditioner according to the present invention includes a position sensing means for sensing a distance from an indoor unit floor surface, and a distance sensed by the position sensing means. Based on the control means for controlling all operations to keep the room temperature uniform based on the above, and output from the control means for adjusting the wind direction discharged into the room based on the separation distance sensed by the position sensing means. A louver motor drive means for driving and controlling a louver motor by a control signal, and an indoor fan driven by a control signal output from the control means for adjusting the direction of the air discharged into the room based on the separation distance sensed by the position sensing means. And an indoor fan motor drive means for controlling.

Further, the operation control method of the air conditioner according to the present invention comprises a position sensing step of sensing a distance from the floor of the indoor unit, and an indoor temperature based on the distance sensed in the position sensing step. A temperature correction step of correcting the room temperature sensed by the sensing means, and a wind direction adjustment step of controlling the angle of the luver according to the separation distance L sensed in the position sensing step to adjust the wind direction discharged into the room. An air volume adjusting step of controlling the rotation speed of the indoor fan by the difference between the room temperature corrected in the temperature correcting step and the set temperature to adjust the air volume discharged into the room.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes an indoor unit body of an air conditioner (hereinafter referred to as an indoor unit), and an intake port 2 for sucking indoor air is formed in an upper front portion of the indoor unit 1. A discharge port 3 for discharging air (cold air or warm air), which has been heat-exchanged by an indoor heat exchanger described later, is formed in the lower part of the front surface of the indoor unit 1.

Further, the discharge port 3 is equipped with an airflow direction adjusting blade 4 (hereinafter referred to as a luver) driven by a luver motor described later so as to adjust the direction of the air discharged into the room through the discharge port 3.

In addition, in the indoor unit 1, in order to exchange the heat of the indoor air sucked through the suction port 2 with the cold air or the warm air by the latent heat of vaporization of the refrigerant, a diagonal one-letter shape is formed on the rear side of the suction port 2. An indoor heat exchanger 5 is mounted, and indoor air is sucked into the lower rear portion of the indoor heat exchanger 5 through an inlet 2, and the air that has been heat-exchanged by the indoor heat exchanger 5 is discharged from the outlet 3.
An indoor fan 6 that discharges the air through the room is installed. Further, inside the indoor unit 1, a duct member 7 for guiding the flow of air sucked through the suction port 2 and discharged to the discharge port 3 is mounted.

Next, a circuit block diagram for controlling the indoor temperature in the air conditioner having the indoor unit thus constructed will be described with reference to FIG.

As shown in FIG. 2, the DC power supply means 20 is
A power supply voltage of a commercial AC power supply supplied from an AC power supply input terminal (not shown) is input and converted into a predetermined DC voltage required for the operation of the air conditioner. The operation operating means 25 is made up of a large number of function keys for setting the operating conditions of the air conditioner desired by the user (cooling, heating, cleaning, reserved operation, operation / stop, etc.) and the desired temperature Ts, time, air volume or air direction. The air conditioner is equipped with a control funnel and a remote controller.

The control means 30 is applied with the DC voltage output from the DC power supply means 20, initializes the air conditioner, and controls the overall operation of the air conditioner according to the operating conditions input by the user through the operating means 25. It is a controlling microcomputer.

The room temperature sensing means 40 senses the temperature of the room air taken in through the suction port 2 and outputs the sensed room temperature data Tr to the control means 30 so that the room temperature Tr is operated. The setting temperature Ts set by the user is maintained through the means 25.

The position sensing means 50 senses the position where the indoor unit 1 is installed (distance from the floor of the indoor unit, hereinafter referred to as "distance"), and controls the sensed distance data L. The ultrasonic sensor outputs to 30 and is attached to a predetermined position of the indoor unit 1. Position sensing means 50
Emits ultrasonic waves to the lower floor surface on which the indoor unit 1 is installed, and senses a reflected signal in which the emitted ultrasonic waves return to the lower floor surface.

The compressor driving means 60 is a driving operation means 25.
Through the control signal of the control means 30 generated based on the difference between the temperature Ts set by the user and the room temperature Tr sensed by the room temperature sensing means 40, the compressor 61
Drive control.

The louver motor driving means 70 adjusts the direction of the air discharged through the discharge port 3 so as to match the wind direction set by the user through the driving operation means 25, and the separation distance L sensed by the position sensing means 50. To keep the overall room temperature uniform based on
The louver motor 71 is drive-controlled by a control signal from the control means 30.

The indoor fan motor drive means 80 is air (cold air or warm air) that has been heat-exchanged by the indoor heat exchanger 5 according to the air volume set by the user through the operation operation means 25.
The indoor fan 6 is controlled by controlling the rotation speed of an indoor fan motor (not shown) in accordance with a control signal from the control means 30 in order to blow the indoor fan 6 into the room.
Drive control. The indoor fan motor driving means 80 has a separation distance L sensed by the position sensing means 50.
Based on the above, the rotation speed of the indoor fan 6 is controlled by the control signal of the control means 30 so as to keep the overall temperature of the room uniform.

Further, the display means 90 is a driving operation means 25.
The operating conditions set by the user and the operating state of the air conditioner are displayed under the control of the control means 30.

The operation of the air conditioner operation control apparatus and method thus configured will be described below.

FIGS. 3 and 4 are flowcharts showing the operation control operation of the air conditioner according to the present invention, in which S represents a step.

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

In step S1 shown in FIG. 3, the DC voltage output from the indoor DC power supply means 20 is input to the control means 30 to initialize the air conditioner. In step S2, the operating conditions (cooling, heating, cleaning, dehumidification, etc.) of the air conditioner desired by the user and the set temperature T are set through the operation operating means 25.
s, the indoor discharge air volume is input to the control means 30.

Next, in step S3, it is determined whether or not the operation switch has been turned on. As a result, when the operation switch is not turned on (NO in S3), the process returns to step S2, and the operation of step S2 and subsequent steps is repeated while maintaining the air conditioner in the operation waiting state.

On the other hand, as a result of the determination in step S3, when the operation switch is turned on (YES in S3), the operation operation means 25 is executed to execute the operation condition selected by the user. Proceed and control means 3
0 outputs a control signal for driving the indoor fan 6 to the indoor fan motor driving means 80.

As a result, the indoor fan motor drive means 8
0 drives the indoor fan 6 by controlling the rotation speed of an indoor fan motor (not shown) according to the set air volume input by the driving operation means 25.

When the indoor fan 6 is driven, the indoor air starts to be sucked into the indoor unit 1 through the suction port 2. Therefore, in step S5, the temperature of the external air sucked through the suction port 2 is used as the indoor temperature Tr to sense the indoor temperature. It is sensed by the means 40 and output to the control means 30.

Then, in step S6, the position sensing means 50
Emits ultrasonic waves to the lower floor surface on which the indoor unit 1 is installed, and receives the signal reflected by the emitted ultrasonic waves hitting the lower floor surface, thereby separating the indoor unit 1 from the floor surface by a distance L. Is sensed and output to the control means 30.

In step S7, the control means 30 determines whether or not the separation distance L sensed by the position sensing means 50 is less than or equal to a predetermined distance L1 (about 1 m) preset in the control means 30. As a result, if the separation distance L is not equal to or less than the predetermined distance L1 (NO in S7), the process proceeds to step S8, and the separation distance L is smaller than the predetermined distance L2 (about 2 m) preset in the control means 30. Or not.

As a result of the discrimination in step S8, the separation distance L
Is smaller than the predetermined distance L2 (when YES in S8)
Means that the indoor unit is installed at a position 1 to 2 m away from the floor surface. In this case, in step S9, the control means 30 sets the value obtained by subtracting 2 from the room temperature Tr sensed by the room temperature sensing means 40 to the room temperature Tr.

Then, in step S10, the louver motor drive means 70 drives the louver motor 71 under the control of the control means 30 to fix the angle of the louver 4 in the 90 ° direction. In step S11, the luver motor drive means 70
Under the control of the control means 30, the louver motor 71 is driven, and the louver 4 starts swinging at an angle of ± 15 °.

Further, as shown in FIG. 4, step S1
In step 2, the control unit 30 determines whether the indoor temperature Tr corrected according to the installed position of the indoor unit and the temperature Ts set by the user through the driving operation unit 25 are the same. As a result, if the room temperature Tr is not the same as the set temperature Ts (NO in S12), the process proceeds to step S13, and it is determined whether the difference between the room temperature Tr and the set temperature Ts is between 1 and 2 ° C. Determine whether.

As a result of the determination in step S13, if the difference between the room temperature Tr and the set temperature Ts is not within 1 to 2 ° C. (in the case of NO in S13), the process proceeds to step S14.
It is determined whether or not the difference between the room temperature Tr and the set temperature Ts is between 3 and 4 ° C. As a result, when the difference between the indoor temperature Tr and the set temperature Ts is between 3 and 4 ° C (S14, YE
(In the case of S) means that the difference between the indoor temperature Tr and the set temperature Ts is small, so that the control means 30 is operated in step S15.
Outputs a control signal for controlling the drive of the indoor fan 6 at the "medium" speed to the indoor fan motor drive means 80.

As a result, the indoor fan motor drive means 8
0 controls the rotation speed of the indoor fan motor by the control of the control means 30 to rotate the indoor fan 6 to the "medium" speed.

Then, in step S16, the control means 30
Determines the operating frequency of the compressor 61 based on the difference between the indoor temperature Tr and the set temperature Ts, and outputs a control signal for driving the compressor 61 to the compressor driving means 60.

As a result, the compressor drive means 60 causes the compressor 6 to operate in accordance with the operating frequency determined by the control means 30.
Drive 1 When the compressor 61 is driven, the indoor air is sucked into the indoor unit 1 through the suction port 2 by the rotational force of the indoor fan 6, and heat is exchanged while passing through the indoor heat exchanger 5. The air whose heat has been exchanged by the indoor heat exchanger 5 is guided by the duct member and begins to be discharged into the room through the discharge port 3.

At this time, the direction of the air discharged through the discharge port 3 is adjusted by controlling the control means 30 so that the louver 4 is swung by 15 ° at a fixed angle, whereby the air flow is adjusted and the inside of the room is adjusted. Keep all temperatures uniform.

On the other hand, as a result of the determination in step S7 shown in FIG. 3, when the separation distance L is less than or equal to the predetermined distance L1 (S7, Y
In the case of ES), the indoor unit is installed at a position within 1 m from the floor surface. In this case, step S2
0, the louver motor driving means 70 fixes the angle of the louver 4 in the 120 ° direction under the control of the control means 30.
The operation following step S11 is performed.

If the separation distance L is not smaller than the predetermined distance L2 as a result of the determination in step S8 (S8, NO).
Means the state in which the indoor unit is installed at a position 2 m or more away from the floor surface. In this case, step S22
Then, the control means 30 subtracts 3 from the room temperature Tr sensed by the room temperature sensor 40 and determines the value of the room temperature Tr.
Set to.

Then, in step S23, the louver motor drive means 70 drives the louver motor 71 under the control of the control means 30 to make the angle of the louver 4 45 °.
It is fixed in the direction, and the operation after step S11 is performed.

If the room temperature Tr is the same as the set temperature Ts as a result of the determination in step S12 shown in FIG.
If YES, the cooling / heating operation of the air conditioner does not need to be performed, and therefore, the process proceeds to step S25, and the compressor driving means 60 stops the compressor 61 under the control of the control means 30.

On the other hand, as a result of the determination in step S13, when the difference between the indoor temperature Tr and the set temperature Ts is between 1 and 2 ° C. (when S13, YES), the indoor temperature Tr and the set temperature Ts are different from each other. It means that the difference is extremely small. in this case,
In step S27, the control unit 30 outputs the control signal for controlling the indoor fan 6 at the "weak" speed to the indoor fan motor driving unit 80.

As a result, the indoor fan motor drive means 8
0 controls the rotation speed of the indoor fan motor under the control of the control means 30 to rotate the indoor fan 6 at a "weak" speed, and performs the operations in and after step S16.

As a result of the determination in step S14, if the difference between the room temperature Tr and the set temperature Ts is not within 3 to 4 ° C. (S14, NO), the room temperature Tr and the set temperature Ts are not determined. It means that there is a large difference. In this case, the process proceeds to step 29, and the control means 30 outputs a control signal for controlling the indoor fan 6 at the "strong" speed to the indoor fan motor drive means 80.

As a result, the indoor fan motor drive means 8
0 controls the rotation speed of the indoor fan motor under the control of the control means 30 to rotate the indoor fan 6 at a "strong" speed, and performs the operations in and after step S16.

[0050]

As described above in detail, according to the air conditioner operation control apparatus and the control method therefor according to the present invention, the indoor temperature can be accurately grasped by the position where the indoor unit is installed, By adjusting the direction and volume of the air discharged into the room, the room temperature can be kept uniform and a comfortable room environment can be provided.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an indoor unit of an air conditioner according to the present invention.

FIG. 2 is a control block diagram of an operation control device for an air conditioner according to the present invention.

FIG. 3 is a flowchart (No. 1) showing the operation control operation of the air conditioner according to the present invention.

FIG. 4 is a flowchart (No. 2) showing the operation control operation of the air conditioner according to the present invention.

[Explanation of symbols]

 20 DC Power Supply Means 25 Operating Procedures 30 Control Means 40 Indoor Temperature Sensing Means 50 Position Sensing Means 60 Compression Driving Means 61 Compressors 70 Luber Motor Driving Means 71 Luver Motors 80 Indoor Fan Motor Driving Means 90 Display Means

Claims (8)

[Claims] 1. A position sensing means for sensing a distance from the floor of an indoor unit, and a control for controlling all operations so as to uniformly maintain an indoor temperature based on the distance sensed by the position sensing means. Means, a louver motor drive means for driving and controlling a louver motor by a control signal output from the control means to adjust the direction of the air discharged into the room based on the separation distance, and the discharge to the room based on the separation distance. An operation control device for an air conditioner, comprising: an indoor fan motor drive means for driving and controlling an indoor fan according to a control signal output from the control means to adjust an air volume. 2. A position sensing step for sensing a distance from the floor of an indoor unit, and a temperature correction for correcting an indoor temperature sensed by an indoor temperature sensing means based on the distance sensed in the position sensing step. A step, an air direction adjusting step for controlling the angle of the louver by the separation distance to adjust the air direction discharged into the room, and a rotation speed of the indoor fan based on the difference between the room temperature corrected in the temperature correcting step and the set temperature. And an air volume adjusting step for adjusting the air volume discharged into the room. 3. The separation distance sensed in the position sensing step is a predetermined distance L1 preset in the control means.
The operation control method of the air conditioner according to claim 2, wherein the angle of the louver is fixed to 120 ° and the wind direction discharged into the room is adjusted in the following cases. 4. The separation distance sensed in the position sensing step is a predetermined distance L2 preset in the control means.
In the following cases, the angle of the louver is fixed at 90 °, and the direction of the air discharged into the room is adjusted.
An operation control method for an air conditioner according to. 5. The separation distance sensed in the position sensing step is a predetermined distance L2 preset in the control means.
In the above case, the angle of the louver is fixed at 45 °, and the direction of the air discharged into the room is adjusted.
An operation control method for an air conditioner according to. 6. When the difference between the room temperature corrected in the temperature correction step and the set temperature is between 1 and 2 ° C., the rotation speed of the indoor fan is “weak” by the control of the control means.
The driving control method of the air conditioner according to claim 2, wherein the driving control is performed by the method. 7. When the difference between the room temperature corrected in the temperature correction step and the set temperature is between 3 and 4 ° C., the rotation speed of the indoor fan is set to “medium” by the control of the control means.
The driving control method of the air conditioner according to claim 2, wherein the driving control is performed by the method. 8. When the difference between the room temperature corrected by the temperature correction step and the set temperature is 4 ° C. or more, the rotation speed of the indoor fan is controlled to be “strong” by the control of the control means. The operation control method for an air conditioner according to claim 2, which is characterized in that.