KR20010095729A - Method for control RPM motor in airconditioner - Google Patents

Abstract

PURPOSE: An RPM(Revolution Per Minute) control method of a phase control motor for an air conditioner is provided to prevent wrong operation of a phase control motor, and to operate stably by controlling RPM of the phase control motor with detecting a signal. CONSTITUTION: An air conditioner operates for cooling or heating in inputting operational condition through a remote controller, and the air amount is input with the remote controller(203). An interrupt input unit detects the cycle of frequency, and outputs a signal to a microcomputer to control RPM of a phase control motor(206). The microcomputer checks the output wave from the interrupt input unit based on frequency from an oscillating unit(209). The abnormal RPM lamp is turned on, and the phase control motor is operated forcibly in outputting the abnormal wave of the interrupt input unit(212). The phase control motor is driven in outputting the normal signal from the interrupt input unit(215). The frequency of the interrupt input unit is compared with the frequency of the oscillating unit repeatedly after a lapse of set time(218). The air conditioner is operated stably with controlling the RPM of the phase control motor.

Description

Phase control motor RPM control method of air conditioner {Method for control RPM motor in airconditioner}

The present invention relates to a phase control motor RMP control method of an air conditioner, and more particularly, in order to solve the instability of the phase control motor which may be caused by external factors or internal factors of the product. A phase control motor RPM control method of an air conditioner capable of forcibly controlling an RPM.

An air conditioner is a device for adjusting indoor air to user requirements. Therefore, the air conditioner sometimes performs heating operation and sometimes cooling operation in accordance with the set conditions. At this time, warm wind or cold wind is discharged from the heat exchanger on the indoor unit side according to each operation state. That is, the phase control motor of the air conditioner is driven to produce the wind discharged to the room side, and the intensity (wind amount) of the generated wind is determined by the ALPM of the phase control motor.

The following describes the phase control motor RMP control process of the air conditioner.

Conventionally, a configuration for controlling the RPM of a phase control motor of an air conditioner, as shown in FIG. 1, is provided on the remote controller 3 and a main body side for inputting an air volume selection signal that meets user requirements. A remote controller receiving unit 2 installed to receive the air volume selection signal of the remote controller 3, and a microcomputer 1 which recognizes the user's air volume selection signal by the output signal of the remote controller receiving unit 2; do.

In addition, the conventional air conditioner includes an interrupt input unit 4 for detecting the frequency of the external AC power input into the system and outputting a signal proportional to the period of the input frequency to the microcomputer 1. Therefore, the microcomputer 1 recognizes the period of the frequency output from the interrupt input unit 4 and outputs a signal according to the air volume control to the motor driving unit 5 in accordance with the period of the recognized frequency. In this way, the RPM of the phase control motor for controlling the air volume of the air conditioner is controlled.

The following describes the ALPM control process of the phase control motor of the conventional air conditioner having the above configuration.

2 is a flowchart illustrating the operation of the PMP control of the phase control motor of the conventional air conditioner.

When the user selects the operating condition of the air conditioner through the remote controller 3, a code signal corresponding to the selected operating condition is sent out from the remote controller 3. At this time, the transmitted signal is received by the remote controller receiving unit 2 and transmitted to the microcomputer 1. The microcomputer 1 recognizes the received operating condition and controls the operation of the air conditioner accordingly (step 100).

In this process, during the operation of the air conditioner under the control of the microcomputer 1 or during the initial operation, a signal corresponding to the air volume control of the air conditioner is input (step 110). Of course, when the user cannot set the air volume, the air volume control of the air conditioner is performed by the preset value.

When the set air volume value for the air volume control of the air conditioner is input in step 110, the microcomputer 1 checks the frequency period detected by the interrupt input unit 4.

The interrupt input unit 4 determines the frequency period of the AC power input from the outside into the product, and outputs a signal proportional thereto. As shown in FIG. 3, the interrupt input unit 4 performs an on / off operation of the transistor Q by an external frequency signal, and performs an on / off operation of the transistor Q. The signal generated at the time (shown in Fig. 4) is output to the microcomputer.

That is, the microcomputer 1 checks the period of the frequency output from the interrupt input unit 4 in order to adjust the intensity of the wind discharged to the indoor side according to the set wind volume signal input from the remote controller 3, In operation 120, a signal for controlling the ALPM of the phase control motor is output to the motor driver 5.

The motor driving unit 5 is to adjust the RPM, that is, the speed of the phase control motor by the ALPM control signal, to adjust the rotational strength and the air volume of the fan of the air conditioner.

In the conventional air conditioner operating as described above, the most important information for adjusting the ALPM of the phase control motor is a signal proportional to the period of the frequency of the external AC power source detected by the interrupt input unit 4. When the set air volume value is input from the remote controller 3, the microcomputer 1 checks the frequency period of the interrupt input unit 4 to maintain the selected state, and controls the phase control motor to the motor driving unit 5 in order to maintain the selected state. To output a signal.

That is, the microcomputer 1 does not check whether the signal input from the interrupt input unit 4 is a signal generated by external noise or a defect inside the product or a signal according to a frequency cycle of a normal external AC power supply. On the basis of the signal output from the interrupt input section 4, a signal for ALMP control of the phase control motor was unconditionally generated.

Therefore, when the signal generated from the interrupt input unit 4 is a signal due to a malfunction or a signal generated by external noise, an error occurs in driving the phase control motor and the phase control motor does not operate correctly or is set by the user. There was a problem that can not be controlled by the air volume.

Accordingly, an object of the present invention is to determine whether a signal generated for the ALMP control of a phase control motor is a normal signal, and to provide a phase control motor ALMP control method of an air conditioner capable of preventing a malfunction of the phase control motor.

1 is a control block diagram of an air conditioner phase control motor according to the prior art,

2 is a control flowchart of a phase control motor of an air conditioner according to the prior art;

3 is a detailed view of an interrupt input unit;

4 is an interrupt waveform diagram input to a microcomputer;

5 is a phase control motor control configuration diagram of an air conditioner according to the present invention;

6 is a control flowchart of a phase control motor of an air conditioner according to the present invention.

Explanation of symbols on the main parts of the drawings

1,11: Microcomputer 2,12: Remote controller receiver

3,13: Remote controller 4,14: Interrupt input unit

5,15: motor drive unit 16: oscillation unit

According to an aspect of the present invention, there is provided a method for controlling a phase control motor RMP of an air conditioner, including: checking a frequency period according to a set air flow value; Determining whether a frequency period according to the set air flow value is correct based on a reference frequency;

Controlling an ALPM of the phase control motor with a set airflow value when the two frequencies coincide; When the two frequencies do not match, it comprises a step of forcibly adjusting the RPM of the phase control motor to a predetermined value.

The present invention is configured to further include the step of displaying the motor drive abnormality on the display unit when forcibly adjusting the ALPM of the phase control motor.

The present invention is characterized in that the reference time is set at predetermined time intervals during the abnormal operation in which the motor driving abnormality is displayed, the determination of the waveform of the input unit is continued, and the control accordingly is performed.

The present invention is characterized in that, when the two frequencies match, the drive of the phase control motor is controlled by the user set ALPM and the motor fault display is released.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the RF control method of the phase control motor of the air conditioner according to the present invention.

5 is a configuration diagram for the AlpM control of the phase control motor of the air conditioner according to the present invention.

The control configuration of the phase control motor of the present invention is provided with a remote controller 13 for inputting an air volume selection signal, an operation condition signal, and the like according to a user's requirement, and the air volume selection of the remote controller 13 provided at the main body side. A remote controller receiving unit 12 for receiving a signal, an operation condition signal, and the like, and a microcomputer 11 for recognizing a user's air volume selection signal and an operation condition signal by the output signal of the remote controller receiving unit 12 are included.

In addition, the control configuration of the phase control motor of the present invention, the interrupt input unit 14 for detecting the frequency of the external AC power input into the system, and outputs a signal proportional to the period of the input frequency to the microcomputer (11). ). The interrupt input unit 14 is configured as shown in FIG.

The microcomputer 11 checks the period of the frequency output from the interrupt input unit 14 when adjusting the ALPM of the phase control motor according to the air volume value set by the user through the remote controller 13. , And outputs a signal according to the air volume control to the motor driving unit 15 in accordance with the period of the confirmed frequency. In this way, the RPM of the phase control motor for controlling the air volume of the air conditioner is controlled.

In addition, the present invention includes a configuration for detecting whether the signal generated by the interrupt input unit 14 is a signal generated under normal operation or a signal generated by external noise or internal coupling. That is, the present invention further includes an oscillation unit 16 that generates an oscillation frequency generated under normal operation of the product, and monitors the output of the interrupt input unit 14 based on the oscillation frequency of the oscillation unit 16. Have

To this end, the present invention includes an oscillator 16 for oscillating a predetermined frequency and a microcomputer 11 for comparing and determining the output of the interrupt input unit 14 based on the output of the oscillator 16.

The following describes the control process of the phase control motor of the air conditioner according to the present invention having the above configuration.

6 is an operation flowchart according to the control process of the phase control motor of the air conditioner according to the present invention.

When the operating condition of the air conditioner is input through the remote controller 13, the cooling operation or the heating operation of the air conditioner is started under the control of the microcomputer 11 that recognizes the air conditioner (step 200).

At the start of the operation of the air conditioner or during the operation, the set air volume for controlling the intensity of the wind on the indoor side is input through the remote controller 13 (step 203). The set wind amount input in the step 203 is received by the remote controller receiving unit 12 on the main body side, and the received signal is transmitted to the microcomputer 11 to recognize the value according to the set wind amount in the microcomputer 11. Will be.

In this process, when a signal for adjusting the set air volume of the air conditioner is input from the user to the microcomputer 11, the microcomputer 11 may adjust the ALPM of the phase control motor according to the set air volume. Check the frequency period of.

The interrupt input unit 14 generates a signal for adjusting the ALPM of the phase control motor. That is, the period of the frequency input from the outside is detected, and a signal proportional thereto is output. The signal thus output is input to the microcomputer 11 (step 206).

Next, the microcomputer 11 determines whether the value input from the interrupt input unit 14 is a signal detected under normal operation of the product based on the oscillation frequency oscillated by the oscillator 16, or by external noise or internal defect. Check if the signal is detected. That is, it is determined whether the output waveform of the interrupt input unit 14 is correct based on the oscillation frequency generated by the oscillator 16 (step 209).

The oscillator 16 uses an oscillator provided in a microcomputer control circuit. Therefore, the microcomputer determines the reference time T with the oscillator 16, and determines whether the input waveform of the interrupt input unit 14 is correctly input.

If it is determined in step 209 that the signal output from the interrupt input unit 14 is not a normal input waveform, the microcomputer 11 turns on an ALPM abnormal lamp of the phase control motor on the display unit (not shown), At step 212, the phase control motor is forcibly operated with an ALMP value on the predetermined failure mode.

Even during the abnormal operation of step 212, the reference time T of the oscillator 16 is determined at a predetermined time interval t, and it is determined whether the input waveform of the interrupt input unit 14 is correct. Control will be performed.

If the two frequencies coincide in this case, the phase control motor is controlled to be driven by the motor drive ALPM set by the user while canceling the display of the motor drive error.

If it is determined in step 209 that the signal output from the interrupt input unit 14 is a normal input waveform, operation is controlled under the condition set in step 203 (step 215).

As a result, steps 212 and 215 are performed for a predetermined time t, and when the predetermined time t elapses (step 218), the process returns to step 209 to return the frequency of the interrupt input unit 14. And to repeat the process of comparing the frequency of the oscillator (16).

Therefore, the present invention continuously checks whether the frequency of the interrupt input unit 14 and the frequency of the oscillation unit 16 coincide at predetermined time intervals t. When the frequencies of the two signals do not coincide, the phase control motor is set to a predetermined value. This mode is forcibly operated and the abnormal lamp is turned on. When the frequencies of the two signals coincide with each other, the control is performed to operate under the set condition.

In the forced driving state, when the frequency of the interrupt input unit 14 and the frequency of the oscillator 16 coincide again, the control is performed to perform the operation control according to step 215 while releasing the lamp.

As described above, the phase control motor RMP control method of the air conditioner according to the present invention is used in the case where a component failure occurs in the interrupt input unit 14 which transmits the output signal of the interrupt input unit 14 to the microcomputer 11. Even if the interrupt waveform is not correctly input to the microcomputer by external noise signal such as electric noise or electric noise, it is possible to properly control the ALPM of the phase control motor for controlling the fan speed, thereby ensuring stable operation of the product. There is an effect that can lead to.

Claims (4)

Checking a frequency period according to the set air flow value; Determining whether a frequency period according to the set air flow value is correct based on a reference frequency; Controlling an ALPM of the phase control motor with a set airflow value when the two frequencies coincide; Comprising the step of adjusting the RF of the phase control motor to a predetermined value when the two frequencies do not match, the phase control motor AlMP control method of the air conditioner. The method of claim 1, And a step of displaying a motor driving abnormality on a display unit when forcibly adjusting the ALPM of the phase control motor. The method of claim 2, The phase control motor RMP control method of an air conditioner, characterized in that the reference time is set at predetermined time intervals, the determination of the waveform of the input unit is continued, and control is performed according to the abnormal operation in which the motor driving abnormality is displayed. The method of claim 3, wherein If the two frequencies coincide during the abnormal operation in which the motor driving abnormality is displayed, the phase control motor ALPM of the air conditioner is controlled while the driving of the phase control motor is controlled by the user-set ALPM and the motor abnormality indication is released. Control method.