KR0125735B1 - The airconditioner and method for controlling therefor - Google Patents

Abstract

Disclosed is an air conditioner and a control method therefor. The air conditioner comprises a wind level sensor, a wind level degrader, a phase controller and a wind level monitor. The wind level sensor installed in a flow path senses the level of wind flowed by a blower. The wind level degrader degrades the wind level that the wind level sensor accurately senses. The phase controller controls the rotation number of the blower according to the sensed wind level. The wind level monitor displays operation state of the blower. Thereby, the performance of the air conditioner can be improved by the control of the wind level.

Description

Air Conditioner and Control Method

1 is an exploded perspective view of a conventional air conditioner,

2 is an indoor unit of an air conditioner according to an embodiment of the present invention,

3 is a block diagram of a control circuit of an air conditioner according to an embodiment of the present invention.

4 is a flowchart showing an operation sequence of an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: base member 3: isolation member

5: indoor unit 7: outdoor unit

9: evaporator 11: blower

13: compressor 15: condenser

17: floppler member 19: housing

21: outdoor air suction unit 25: discharge unit

27 grill member 29 suction part

31: rear part 33: heat exchanger

35: defrost receiving 37: indoor fan

39: air flow attenuation portion 43: wind direction control louver

49: microcomputer 51: remote control receiver

53: phase control unit 55: fan motor drive unit

57: fan motor 59: air flow sensor

61: A / D converter 63: comparison operation unit

65: air flow monitor unit 67: operation display unit

The present invention relates to an air conditioner, in particular to the air conditioner for controlling the amount of air discharged into the room by installing a wind speed attenuator and a wind speed sensor for detecting the wind speed in the air flow passage of the air conditioner to reduce the rate at a constant rate It is about.

In general, as shown in FIG. 1, a conventional air conditioner is divided into an interior part 5 and an exterior part 7 by having an isolation member 3 disposed in a longitudinal direction at a central part of the base member 1, as shown in FIG. .

In addition, the indoor unit 5 has an evaporator 9 for converting indoor air sucked indoors into cold air, and a blower 11 for sucking indoor air and discharging cold air cooled in the evaporator 9 into the room. ) Is excreted.

The outdoor unit 7 includes a compressor 13 for compressing a refrigerant, a condenser 15 for condensing the refrigerant compressed by the compressor 13, and a flopel member 17 for cooling the condenser 15. ) And the flopper member 17 and the blower 11 which are rotated by a motor (not shown) are disposed.

In the drawing, reference numeral 19 denotes a housing forming the exterior of the indoor part 5 and the outdoor part 7, and the condenser 15 is rotated at predetermined positions on both left and right sides by rotation of the flopper member 17. Outdoor air intakes 21 are formed on the left and right sides, respectively, in which outdoor air is sucked so as to cool), and an inlet 23 through which indoor air is sucked on the front of the indoor part 5, and the evaporator. The discharge section 25 through which cold air cooled in (9) is discharged and the grill member 27 formed on the front side are mounted.

In the air conditioner configured as described above, the evaporator 9 is disposed in the longitudinal direction at the front end of the base member 1, and the grill member having the suction part 23 and the discharge part 25 is formed on the front surface of the evaporator 9. 27 is inserted to discharge cold air to the discharge portion 25 formed under the grill member 27 to cool the room.

By the way, the indoor fan control method of the conventional air conditioner configured as described above controls the air volume of the air conditioner by controlling only the rotation speed of the fan motor of the indoor unit. There was a problem that can not be adjusted.

Accordingly, the present invention has been made in view of the various problems of the related art, and an object of the present invention is to accurately determine the rotational speed of the fan motor by the air flow rate reducing unit and the air flow rate sensor. It is to provide an air conditioner and a control method thereof that can improve the cooling efficiency by controlling.

Another object of the present invention is to determine the air volume generated by the rotational drive of the indoor fan and compare it with the set air volume, and by the comparison result the user air through the air volume monitor installed in the air conditioner case The present invention provides an air conditioner capable of knowing the current control state of a conditioner and a control method thereof.

In order to achieve the above object, an air conditioner according to the present invention includes a heat exchanger for cooling air sucked in a room, a defrost water receiver receiving the defrost water generated by contacting the heat exchanger with sucked air, and cooled by the heat exchanger. In the air conditioner comprising an indoor fan for blowing air into the room, and the air flow control louver for adjusting the direction of the cold air blown into the room by the indoor fan up and down, the flow path to detect the air volume blown by the indoor fan And a wind volume attenuator for attenuating a part of the air volume blown into the flow path to accurately sense the air volume discharged into the room by the air volume sensor and the air volume sensor disposed in the air flow sensor. A phase control unit which senses the amount of air flowing into the flow path and controls the rotation speed of the indoor fan according to the amount of air flow; Characterized in that the air volume monitor portion for displaying the strong operation and weak operation of the inner fan.

In addition, the control circuit of the air conditioner controls the operation of the air conditioner by receiving a driving signal output from the remote control unit receiving a driving condition from a remote controller (hereinafter referred to as a remote controller) operated by the user and the remote control receiver A microcomputer, a phase control unit for controlling a phase of the fan motor by receiving a control signal from the microcomputer, a fan motor driver for driving a fan motor by receiving a control signal of the phase control unit, and the fan mo A fan motor with an indoor fan driven by a control signal of the driving unit, a wind flow sensor for sensing the air volume blown into the room, and A for converting analog data output from the wind flow sensor to a digital value A comparison between the / D converter and the data output from the A / D converter and outputting the result to the microcomputer Characterized in that by the operation unit, and a control of the micro-computer consisting of driving a display indicating that the air conditioner operating state.

In addition, the control method of the air conditioner according to the present invention includes a switch-on discrimination step for determining whether the indoor unit is switched on, and when the switch-on discrimination step is turned on, the microcomputer inputs the set air volume from the remote control receiver. A reference air volume setting step of setting the reference air volume β, a fan motor driving step of driving an indoor fan motor for a predetermined time when the air volume is set in the microcomputer in the air volume setting step, and the fan motor driving step After operating the indoor fan drive motor for a certain time at, the current air volume (α) blown into the flow path by the air flow sensor is converted into digital data by the A / D converter and input into the microcomputer through the comparison / operation unit. The air volume data input step and the current air volume α input in the air volume data input step are set in the reference air volume setting step. A wind volume judging step for judging whether or not the quasi-air volume is equal to? Characterized in that made.

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

2 is a cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present invention, and FIG. 3 is a block diagram of a control circuit of the air conditioner according to an embodiment of the present invention.

In Fig. 2, reference numeral 29 denotes a suction part for sucking air in the room, and 31 denotes a rear part for blocking the indoor air sucked from the suction part 29 from being discharged to the rear side of the indoor unit. Reference numeral 33 is a heat exchanger disposed between the suction part 29 and the rear part 31 to cool indoor air sucked from the suction part 29, and 35 is a lower part of the heat exchanger 33. The defrost water receiver which is discharged to receive the defrost water generated when the hot indoor air sucked from the suction unit 29 is heat-exchanged in the heat exchanger 33, 37 is the indoor air through the suction unit 29 At the same time as the suction, the sucked indoor air is an indoor fan that blows out the cold air heat-exchanged by the heat exchanger 33 to the room to cool the air conditioner, 39 is the lower side of the indoor fan 37 The air volume attenuating unit which attenuates the air flow rate of the cold air discharged to the room by being discharged to the flow path, and (59) detects the air volume uniformly attenuated by the air volume attenuation unit 39 to be described later through the wiring (41a) The microcomputer to be described later via a D converter and a comparison operation unit And air amount detecting sensor unit for output, 43 is a wind direction control louver for controlling the flow direction of the cool air blown into the room from the indoor fan (37).

Next, the control circuit of the air conditioner will be described with reference to FIG.

In Fig. 3, reference numeral 51 denotes a remote control receiver which receives a user's air conditioner driving operation command from a remote controller (not shown) and outputs it to a microcomputer 49 that controls the overall operation of the air conditioner. A / D converter for converting the analog air volume flowing through the flow path of the air conditioner sensed by the unit 59 to digital, and (63) is a digital data for the air volume output from the A / D converter 61 A comparison operation unit which compares and calculates and outputs the result to the microcomputer 49, and 53 denotes the amount of cold air discharged into the room when the airflow rate detection signal of the airflow rate sensor 59 is input to the microcomputer 49. A phase control unit which receives the control signal of the microcomputer 49 from the comparison operation unit 63 and controls the phase of the control signal in order to drive the speed of the motor 57 faster or slower, so that 55 is the phase. The fan motor driving unit receives the phase control signal output from the controller 53 and drives the fan motor 57.

In the drawing, reference numeral 65 denotes the air volume at that time by the output signal of the microcomputer 49, when the microcomputer 49 receives data on the airflow rate flowing through the flow path detected by the airflow rate sensor 59. The air volume monitor unit monitors (displays) the user so that the user can know it, and reference numeral 67 denotes an operation display unit that displays the operation state of the current air inquiry unit by the output signal of the microcomputer 49.

Next, the control operation of the air conditioner according to the present invention will be described with reference to FIG.

5 is a flowchart showing the operation procedure of the air conditioner according to an embodiment of the present invention.

First, when a user operates a remote controller (not shown) to operate an air conditioner, the remote control receiver 51 receives the signal and outputs the signal to the microcomputer 49.

At this time, the air conditioner is initialized to operate in step S1, and the flow advances to step S2 to determine whether the operation switch of the air conditioner is ON, and if the operation switch is not ON (NO), step S2. Repeat the operation.

When the operation switch is turned on (YES) in step S2, the microcomputer 49 receives the reference set amount of air? From the remote control receiver 51 in step S3, and sets the standard amount of air?.

Subsequently, in step S4, the fan motor 57 of the indoor unit is continuously driven for a predetermined time in order to generate the current amount of air α by the reference set air amount β input in step S3. In step S5, after the fan motor 57 is driven and a predetermined time has elapsed, the analog (ANALOG) amount data inputted from the airflow sensor (59) is converted into digital (A / D converter 61). DIGITAL) data is converted into a data amount, and the current air volume? Of the converted digital data amount is input to the microcomputer 49 to discriminate from the reference set wind amount?.

At this time, if the reference set air volume β and the current air volume α are the same (Yes), the flow proceeds to step S7 and the air volume monitor 36 turns on the light emitting diode indicating that the indoor air conditioning is comfortable, and then the air. Terminate operation of the unit.

On the other hand, if the reference wind amount β set in step S6 and the current wind amount α are not equal (No), the flow advances to step S8 to determine whether the current wind amount α is larger than the set reference wind amount β. If the value of the current air flow amount α is larger, the flow advances to step S9 to turn on the light emitting diode LED of the air volume monitor unit 65, and to proceed to step S10, the rotation speed RPM of the fan motor 57 is increased. After the microcomputer 49 outputs the control signal to the comparison operation unit 63 so as to reduce the number, the microcomputer 49 repeatedly performs the operations below the feedback step S6 in step S6.

If it is determined in step S8 that the current air volume α is less than the set reference air volume β (No), the flow proceeds to step S11 to display a light-emitting diode (LED) displaying the medicine on the air volume monitor 65. ), The microcomputer 49 outputs a control signal to the comparison operation unit 63 to increase the rotation speed RPM of the indoor fan motor 57, and then feeds back to step S6. The operation of step S6 or less is repeated.

Therefore, the air conditioner according to an embodiment of the present invention is configured to reduce the rotation speed of the fan motor when the air volume is strong, and to adjust the temperature of the room by increasing the rotation speed of the fan motor when the air volume is weak. It is possible to improve the cooling efficiency, and the user can always know the operation state of the air conditioner by turning on the light emitting diode.

As described above, according to the air conditioner of the present invention and a control method thereof, a fan motor is installed when the detected air volume is strong by detecting the air volume discharged by mounting the air volume sensor as the air volume sensor in the flow path of the indoor unit. The amount of air discharged is reduced by reducing the number of revolutions of the fan, and the amount of air discharged is increased by increasing the number of revolutions of the fan motor when the amount of air detected by the airflow sensor is weak, thereby improving heating efficiency. At the same time, there is an excellent effect that the operating condition of the air conditioner, that is, the strength and weakness of the air volume can be known by the lighting of the light emitting diodes.

Claims (7)

A heat exchanger for cooling the air sucked in the room, a defrost water receiver receiving the defrost water generated by the sucked air in contact with the heat exchanger, an indoor fan for blowing the air cooled by the heat exchanger into the room, and the indoor fan. In the air conditioner consisting of the air volume control louver for adjusting the direction of the cold air blown into the room by up and down, the air flow rate sensor unit disposed in the flow path to detect the air flow blown by the indoor fan, and the air flow rate sensor Air flow attenuation part that attenuates a part of the air flow blown into the flow path so that the air flow discharged to the room by the air can be accurately sensed, and the air flow flowing through the flow path by the air flow sensor detects the air flow according to the air flow Phase control unit for controlling the number of revolutions of the indoor fan, and air flow monitor for displaying the strong and weak operation of the indoor fan The air conditioner, characterized in that binary. 2. The method of claim 1, wherein when the air volume blown into the flow path detected by the airflow sensor is strong, the phase controller is controlled by a control signal of a microcomputer to reduce the RPM of the indoor fan motor. Air conditioning. The method of claim 1, wherein when the air volume blown into the flow path detected by the airflow sensor is weak, the phase controller is controlled by a control signal of a microcomputer to increase the RPM of the indoor fan motor. Air conditioning. The air conditioner according to claim 1, wherein the air flow rate sensor is disposed below the airflow attenuation portion in the flow path. A switch-on discrimination step for determining whether the indoor unit is switched on, and a reference air flow setting step for setting a reference air flow β by receiving a set air volume from the remote control receiver when the switch-on discrimination step is turned on. And a fan motor driving step for driving an indoor fan motor for a predetermined time when the air volume is set in the air volume setting step, and an indoor fan driving motor for a predetermined time in the fan motor driving step. And the current air volume data input step of converting the current air volume (α) blown into the flow path by the air flow sensor into the digital data by the A / D converter, comparing and inputting it to the microcomputer through the calculation unit, and the air volume data input step. Air volume discrimination step for discriminating whether or not the current air volume α to be equal to the standard air volume β set in the reference air volume setting step The method of controlling the air conditioner, characterized in that the air flow determination made in the step shown in the step for emitting the light emitting diode when the current flow rate is determined equal to the reference flow rate to indicate that the unit operation status pleasant air flow monitor. The air volume monitor according to claim 5, wherein in the air flow rate discrimination step, when the current air volume α is not equal to the reference air volume β, it is determined whether the current air volume α is larger than the reference air volume β. A method of controlling an air conditioner, the method comprising: driving a light emitting diode displaying a steel and reducing the rotation speed of the fan motor to reduce the amount of air flowing in the flow path. The air volume monitor according to claim 5, wherein in the air flow rate discrimination step, when the current air volume? Is not equal to the reference air volume?, It is determined whether or not the current air volume α is greater than the reference air volume β. A method of controlling an air conditioner, the method comprising: driving the indoor fan motor by reducing the number of revolutions of the light emitting diode which displays the medicine and increasing the amount of air flowing through the flow path.