Air conditioning apparatus, control device and control method for swing motor thereof

Abstract

The application provides an air conditioning equipment and a control device and a control method of a swing motor thereof. The control device of the swing motor comprises: an indoor main chip; a conversion circuit, which is electrically connected with the indoor main chip, is used for converting a control signal sent by the indoor main chip into a driving signal, and an output end of the conversion circuit is electrically connected with the swing motor; and a detection circuit, one end of which is electrically connected with the indoor main chip, and the other end of which is electrically connected with the output end of the conversion circuit, is used for acquiring a feedback signal after the conversion circuit is electrically connected with the swing motor, and transmitting the feedback signal to the indoor main chip. Through the setting of the detection circuit which can detect the running state of the swing motor, the indoor main chip can monitor the running state of the swing motor in real time according to the feedback signal transmitted by the detection circuit.

Description

Technical Field

[0001] This application belongs to the field of air conditioning technology, and in particular relates to an air conditioning device and a control device and control method for its swing motor. Background Technology

[0002] With the increasing popularity of air conditioning equipment, users have higher and higher requirements for the comfort and reliability of air conditioning equipment. In order to ensure that users can feel the swing effect of air conditioning equipment from different angles, swing motors are widely used in air conditioning equipment.

[0003] The operating process of the indoor swing motor in existing air conditioning equipment is typically as follows: The main chip of the indoor unit outputs a Pulse Width Modulation (PWM) command through internal software control logic based on the user's control instructions. This PWM command is then used by a conversion circuit to control the swing motor, causing it to operate at a fixed angle. However, the main chip of the indoor unit cannot know the actual operating status of the swing motor. Summary of the Invention

[0004] This application provides an air conditioning device and a control method for its swing motor, so that the indoor unit's main chip can know the actual operating status of the swing motor.

[0005] In a first aspect, embodiments of this application provide a control device for a swing motor, comprising:

[0006] Indoor unit main chip;

[0007] A conversion circuit, electrically connected to the main chip of the indoor unit, is used to convert control signals sent by the main chip of the indoor unit into drive signals. The output terminal of the conversion circuit is electrically connected to the swing motor.

[0008] The detection circuit has one end electrically connected to the main chip of the indoor unit and the other end electrically connected to the output terminal of the conversion circuit. The detection circuit is used to obtain the feedback signal after the conversion circuit is electrically connected to the swing motor and transmit the feedback signal to the main chip of the indoor unit.

[0009] Optionally, the internal main chip is used for:

[0010] When the indoor unit main chip determines that the feedback signal is within a first preset range, the indoor unit main chip determines that the feedback signal is normal and obtains the working mode of the swing motor;

[0011] When the swing motor is in the first working mode, the main chip of the indoor unit controls the swing motor to operate within a first angle range.

[0012] Optionally, the main chip of the internal unit is also used for:

[0013] When the swing motor is in the second working mode, the indoor unit main chip determines whether the feedback signal is within a second preset range, wherein the second preset range is within the first preset range and is less than the first preset range;

[0014] If the feedback signal exceeds the second preset range, the indoor unit main chip adjusts the control signal and sends a drive signal to make the swing motor run within a second angle range, where the second angle range is within the first angle range but less than the first angle range.

[0015] Optionally, the drive signal is a pulse width modulation signal, and the indoor unit main chip adjusts the control signal and sends a drive signal to adjust the duty cycle of the drive signal to drive the swing motor to operate within the second angle range.

[0016] Optionally, when the feedback signal is determined to be abnormal, the indoor unit's main chip controls the swing motor to stop and outputs an alarm signal.

[0017] Optionally, the detection circuit includes:

[0018] The transistor includes a base, an emitter, and a collector, with the collector electrically connected to the power supply of the internal main chip.

[0019] A first resistor, one end of which is electrically connected to the base;

[0020] The second resistor has one end electrically connected to the other end of the first resistor, and the other end of the second resistor is electrically connected to the output terminal of the conversion circuit.

[0021] A third resistor, one end of which is electrically connected to the other end of the first resistor, and the other end of which is electrically connected to a ground terminal;

[0022] A fourth resistor, one end of which is electrically connected to the signal acquisition terminal of the internal main chip, and the other end of which is electrically connected to the emitter; and

[0023] The fifth resistor has one end electrically connected to the other end of the fourth resistor, and the other end electrically connected to the ground terminal.

[0024] Optionally, the control device further includes:

[0025] An interface socket, one interface of which is pluggable to the output terminal of the conversion circuit, and the other interface of which is pluggable to the swing motor.

[0026] Secondly, this application also provides a control method for a swing motor, applied to a control device for a swing motor. The control device for the swing motor includes an indoor unit main chip, a conversion circuit, and a detection circuit. The indoor unit main chip is electrically connected to the conversion circuit. One end of the detection circuit is electrically connected to the indoor unit main chip, and the other end of the detection circuit is electrically connected to the output terminal of the conversion circuit. The output terminal of the conversion circuit is electrically connected to the swing motor. The control method includes:

[0027] The main chip of the indoor unit controls the operation of the swing motor through the conversion circuit;

[0028] The indoor unit's main chip determines whether the feedback signal after the conversion circuit is electrically connected to the swing motor is abnormal.

[0029] When the indoor unit main chip determines that the feedback signal is abnormal, the indoor unit main chip controls the swing motor to stop and outputs an alarm signal;

[0030] When the indoor unit's main chip determines that the feedback signal is normal, the indoor unit's main chip controls the swing motor to operate within a first angle range.

[0031] Optionally, when the indoor unit main chip determines that the feedback signal is normal, the indoor unit main chip controls the swing motor to operate within the first angle range, which includes:

[0032] When the indoor unit main chip determines that the feedback signal is within a first preset range, the indoor unit main chip determines that the feedback signal is normal and obtains the working mode of the swing motor;

[0033] When the swing motor is in the first working mode, the main chip of the indoor unit controls the swing motor to operate within a first angle range;

[0034] When the swing motor is in the second working mode, the indoor unit main chip determines whether the feedback signal is within a second preset range, wherein the second preset range is within the first preset range and is less than the first preset range;

[0035] If the feedback signal exceeds the second preset range, the indoor unit main chip adjusts the control signal and sends a drive signal to make the swing motor run within a second angle range, where the second angle range is within the first angle range but less than the first angle range.

[0036] Thirdly, embodiments of this application also provide an air conditioning device, including:

[0037] Oscillating fan motor;

[0038] A control device for the oscillating motor is electrically connected to the oscillating motor, and the control device for the oscillating motor is as described in any of the preceding descriptions.

[0039] The control device for the swing motor in this embodiment includes an indoor unit main chip, a conversion circuit, and a detection circuit. The indoor unit main chip controls the operation of the swing motor through the conversion circuit. The detection circuit acquires the feedback signal after the conversion circuit is electrically connected to the swing motor and transmits the feedback signal to the indoor unit main chip. By setting a detection circuit that can detect the operating status of the swing motor, the indoor unit main chip can monitor the operating status of the swing motor in real time based on the feedback signal transmitted by the detection circuit. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0042] Figure 1 This is a schematic diagram of the structure of an air conditioning device provided in an embodiment of this application.

[0043] Figure 2 for Figure 1 A schematic diagram of the control device for the swing fan motor in the air conditioning equipment shown.

[0044] Figure 3 for Figure 1 Another structural schematic diagram of the control device for the swing fan motor in the air conditioning equipment shown.

[0045] Figure 4 for Figure 3 The diagram shows a schematic of a detection circuit in the control device of the swing motor.

[0046] Figure 5 for Figure 3 The diagram shows another structural schematic of the detection circuit in the control device of the swing motor.

[0047] Figure 6 This is a schematic flowchart of a control method for a swing motor provided in an embodiment of this application.

[0048] Figure 7 This is another schematic flowchart illustrating the control method for the oscillating motor provided in an embodiment of this application. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0050] This application provides a control device for an air conditioning unit and its swing motor to improve the reliability of air conditioning operation. The control device for the air conditioning unit and its swing motor will be described below with reference to the accompanying drawings.

[0051] This application provides an air conditioning device; please refer to the following for details. Figure 1 , Figure 1 This is a schematic diagram of the structure of an air conditioning device provided in an embodiment of this application. The air conditioning device 1 can be an inverter air conditioner or a fixed-frequency air conditioner, and can be a floor-standing air conditioner, a wall-mounted air conditioner, or a central air conditioning system, etc. The air conditioning device 1 provided in this embodiment includes a swing motor 10 and a control device 20 for the swing motor. The swing motor 10 and the control device 20 are electrically connected. The control device 20 controls the swing motor 10 to ensure its normal operation. The control device 20 can also receive feedback from the swing motor 10 to monitor its operating status. The swing motor 10 controls the fan blades of the air conditioning device 1 to swing, allowing the fan to blow air through the gaps created by the swinging blades into the space outside the air conditioning device 1, so that users can experience the airflow effect from different angles. Therefore, the normal operation of the swing motor 10 plays a significant role in its coordination with the fan and the normal operation of the fan blades.

[0052] To more clearly explain the control device 20 of the swing motor and its control process, the following will explain the control device 20 of the swing motor and the control method of the swing motor respectively.

[0053] Please combine Figure 1 And see Figure 2 , Figure 2 for Figure 1The diagram shows a schematic of a control device for the swing motor in an air conditioning unit. The control device 20 for the swing motor includes an indoor unit main chip 22, a conversion circuit 24, and a detection circuit 26. The conversion circuit 24 is electrically connected to the indoor unit main chip 22 and converts the control signals sent by the indoor unit main chip 22 into drive signals. The output of the conversion circuit 24 is electrically connected to the swing motor 10 so that the indoor unit main chip 22 controls the swing motor 10 through the drive signals. One end of the detection circuit 26 is electrically connected to the indoor unit main chip 22, and the other end of the detection circuit 26 is electrically connected to the output of the conversion circuit 24. The detection circuit 26 is used to acquire the feedback signal after the conversion circuit 24 is electrically connected to the swing motor 10 and transmit the feedback signal to the indoor unit main chip 22. By setting the detection circuit 26, which can detect the operating status of the swing motor 10, the indoor unit main chip 22 can monitor the operating status of the swing motor 10 in real time based on the feedback signal transmitted by the detection circuit 26.

[0054] The main chip 22 of the indoor unit is located in the indoor unit of the air conditioning equipment 1 to control the operation of the indoor unit. It should be noted that the air conditioning equipment 1 is generally divided into an indoor unit and an outdoor unit, which are located in different positions to perform different functions. In this embodiment, both the swing motor 10 and the control device 20 for the swing motor are located in the indoor unit to control the operation of the indoor unit of the air conditioning equipment 1.

[0055] The conversion circuit 24 can be understood as a logic level conversion circuit, which converts the control signal sent by the indoor unit main chip 22 into a drive signal and sends it to the swing motor 10, thereby controlling the operation of the swing motor 10.

[0056] The detection circuit 26 is located between the indoor unit main chip 22 and the swing motor 10. The control signal sent by the indoor unit main chip 22 is converted into a drive signal by the conversion circuit 24. The detection circuit 26 can obtain the feedback signal after the conversion circuit 24 is connected to the swing motor 10, and transmit the feedback signal to the indoor unit main chip 22. In this way, the operating status of the swing motor 10 is detected, thereby enabling the indoor unit main chip 22 to monitor the operation of the swing motor 10.

[0057] The indoor unit's main chip 22 can be used to determine abnormalities in the feedback signal. For example, when an abnormal feedback signal is detected, the swing motor 10 is stopped and an alarm signal is output. When the feedback signal is within a first preset range, the feedback signal is determined to be normal, and the operating mode of the swing motor 10 is obtained. When the swing motor is in the first operating mode, the swing motor 10 is controlled to operate within a first angle range. The first operating mode can be understood as the normal operating mode, i.e., when the user has no special requirements. The feedback signal is a pulse width modulation (PWM) signal. An abnormal feedback signal can be understood as determining whether the returned PWM signal is within the first preset range. If the returned PWM signal is 0 or not within the first preset range, the feedback signal is determined to be abnormal. If the returned PWM signal is within the first preset range, the feedback signal is determined to be normal, and the swing motor 10 is then controlled to operate within the first angle range. For example, the first preset range, i.e., the duty cycle of the pulse width modulation signal, can be 0.4 to 0.6. When the duty cycle of the feedback pulse width modulation signal is 0.8 or 0.2, that is, the feedback signal is not within the first preset range, it can be determined that the feedback signal is abnormal. The duty cycle of the pulse width modulation signal refers to the proportion of the on-time relative to the total time within a pulse cycle. In the telecommunications field, the duty cycle has the following meaning: for example, the duty cycle of a pulse sequence with a pulse width of 1μs and a signal period of 4μs is 0.25. It should be noted that when controlling the oscillating motor 10 to start running, the operating angle of the oscillating motor 10 can be understood as the angle within the first angle range. When the pulse width modulation signal fed back by the detection circuit 24 is normal, the oscillating motor 10 is controlled to operate normally, that is, to continue operating within the original operating range of the first angle range.

[0058] It should be noted that the indoor unit's main chip 22 sends a control signal, which is converted into a drive signal by the conversion circuit 24 and sent to the swing motor 10. When the feedback signal detected by the indoor unit's main chip 22 matches the sent control signal, it can be determined that the swing motor is operating normally. When the feedback signal detected by the indoor unit's main chip 22 deviates from the sent control signal, it can be understood that the feedback signal of the swing motor 10 affects the drive signal of the conversion circuit 24. For example, the feedback signal of the swing motor 10 lowers the duty cycle of the drive signal of the conversion circuit 24, causing a deviation between the feedback signal detected by the indoor unit's main chip 22 and the sent control signal. In this case, it can be determined that the operating angle of the swing motor 10 deviates from the preset value, and the indoor unit's main chip 22 then adjusts the duty cycle of the output control signal according to the deviation to correct the deviation.

[0059] When the swing motor 10 is in the second operating mode, the indoor unit's main chip 22 determines whether the feedback signal is within a second preset range. The second operating mode can be understood as the operating mode when the user has special needs. When the feedback signal exceeds the second preset range, the indoor unit's main chip 22 adjusts the drive signal and outputs the adjusted drive signal to the swing motor 10 to make the swing motor 10 operate within a second angle range. The second preset range is within the first preset range but smaller than the first preset range, and the second angle range is within the first angle range but smaller than the first angle range. It should be noted that the endpoint values ​​of the second preset range are within the first preset range and smaller than the first preset range. The endpoint values ​​of the second angle range are also within the first angle range and smaller than the first angle range. It should be noted that the feedback signal returned by the detection circuit 26 provided in this embodiment can initially determine whether the swing motor 10 is operating normally. After confirming that the swing motor 10 is operating normally, it then determines whether the operation of the swing motor 10 meets the user's requirements. When the feedback signal is within the first preset range but not within the second preset range, it can be determined that the swing motor 10 is operating normally and meets the user's requirements. At this time, the indoor unit main chip 22 controls the swing motor 10 to operate within the second angle range. When the feedback signal is within the second preset range, it can be determined that the swing motor 10 is operating normally but does not meet the user's requirements. At this time, the indoor unit main chip 22 controls the swing motor 10 to operate within the second angle range to meet the user's requirements. The second angle range can be a second angle range pre-stored in the indoor unit main chip 22 corresponding to different modes, or it can be a second angle range input to the indoor unit main chip 22 according to the swing angle required by the user.

[0060] The drive signal is a pulse width modulation (PWM) signal. The indoor unit's main chip 22 adjusts the duty cycle of the PWM signal and outputs the adjusted PWM signal to the swing motor 10 so that the swing motor 10 runs at the second angle. It can be understood that by modulating the duty cycle of the PWM signal, the swing motor 10 runs at the required operating angle.

[0061] Understandably, the indoor unit's main chip 22 outputs a control signal to the conversion circuit 24, which then converts it into a drive signal to control the swing motor 10. Simultaneously, the detection circuit 26 detects the actual operation of the swing motor 10 and sends a feedback signal to the indoor unit's main chip 22. The indoor unit's main chip 22 uses the detection circuit 26 to assess the actual operation of the swing motor 10. When the swing motor 10 fails to operate normally, the air conditioning unit 1 shuts down and outputs an alarm signal to inform the user of the malfunction, thus ensuring the reliable operation of the air conditioning unit 1. When a deviation from the user's desired operating angle is detected, the indoor unit's main chip 22 adjusts the duty cycle of the pulse width modulation signal output in real time to correct the angle deviation of the swing motor, improving the user experience.

[0062] It should be noted that the control device 20 for the oscillating fan motor provided in this application embodiment may also include an interface socket. For example, please refer to... Figure 1 And see Figure 3 , Figure 3 for Figure 1 The diagram shows another structural schematic of the control device for the swing motor in the air conditioning equipment. Interface socket 28 can be understood as a socket. One interface of interface socket 28 is plugged into and unplugged to the output terminal of conversion circuit 24, and the other interface of interface socket 28 is plugged into and unplugged to the interface of swing motor 10. It can be understood that only when the output terminal of conversion circuit 24 is simultaneously plugged into interface socket 28 and the interface of swing motor 10 is simultaneously plugged into interface socket 28 can the conversion circuit 24 and swing motor 10 be electrically connected through interface socket 28, thereby enabling the conversion circuit 24 to transmit signals to the swing motor 10 to control the swing motor 10.

[0063] To more clearly explain the process by which the control device 20 of the swing motor detects the operating status of the swing motor 10, the detection circuit 26 in the control device will be described below.

[0064] For example, please refer to Figure 3 And see Figure 4 , Figure 4 for Figure 3The diagram shows a schematic of a detection circuit in the control device of the swing motor. The detection circuit 26 includes a transistor Q, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, and a fifth resistor R5. The transistor Q includes a base Q1, an emitter Q2, and a collector Q3. The collector Q3 is electrically connected to the power supply VCC1 of the indoor unit's main chip 22. One end of the first resistor R1 is electrically connected to the base Q1, and the other end is electrically connected to one end of the second resistor R2. The other end of the second resistor R2 is electrically connected to the output terminal OUT4 of the conversion circuit 24. One end of the third resistor R3 is electrically connected to the other end of the first resistor R1, and the other end is electrically connected to ground. One end of the fourth resistor R4 is electrically connected to the signal acquisition terminal P1.3 of the indoor unit's main chip 22, and the other end is electrically connected to the emitter Q2. One end of the fifth resistor R5 is electrically connected to the other end of the fourth resistor R4, and the other end is electrically connected to ground.

[0065] The indoor unit's main chip 22 includes a power supply VCC, a signal output terminal P1.7, a signal acquisition terminal P1.3, and a ground terminal GND. The power supply VCC is used to power the indoor unit's main chip 22, and the voltage value of the power supply VCC is VCC1. The signal output terminal P1.7 is used to output signals, and the signal acquisition terminal P1.3 is used to acquire signals.

[0066] The conversion circuit 24 includes an input pin IN1, a ground terminal VSS, an output pin OUT4, and a power supply VDD. The input pin IN1 is used to receive the input signal, and the output pin OUT4 is used to output the signal. The voltage value of the power supply VDD is VCC2. The power supply VCC of the main chip 22 is different from the power supply VDD of the conversion circuit 24. The input pin IN1 is connected to the signal output terminal P1.7 of the main chip 22.

[0067] Interface socket 28 includes interface 1 and interface 5. Interface 1 is used to connect to power supply VCC2, and interface 5 is used to connect to the output pin OUT4 of conversion circuit 24.

[0068] It is understandable that the second resistor R2 and the third resistor R3 form the voltage divider and current limiting module of the detection circuit 26. The transistor Q can be understood as the switching module of the detection circuit 26. When the end of the second resistor R2 closest to the interface socket 28 receives a high level from the swing motor 10, a new voltage value is formed by the voltage divider formed by the second resistor R2 and the third resistor R3. The high level forms a current through the second resistor R2 and the third resistor R3, and the high level also forms a current through the second resistor R2 and the first resistor R1 to conduct the transistor Q. Then, the high level signal is input to the signal acquisition terminal P1.3 of the indoor unit main chip 22 through the fourth resistor R4. At this time, the indoor unit main chip 22 receives the high level signal fed back from the detection point connected to the conversion circuit 24 and the swing motor 10, and compares it with the control signal issued by the indoor unit main chip 22. When the high level signal is the same as or approximately equal to the control signal, it is determined that the swing motor 10 is operating normally. When the end of the second resistor R2 near the interface 28 receives a low level from the swing motor 10, the low level does not turn on the transistor Q. Consequently, the signal acquisition terminal P1.3 of the indoor unit main chip 22 receives a low level signal from the detection point connected to the conversion circuit 24 and the swing motor 10. When the low level signal is different from the control signal, it is determined that the swing motor 10 is operating abnormally.

[0069] Furthermore, the structure of the indoor main chip 22, the conversion circuit 24, and the interface socket 28 is not limited to this; for examples, please refer to [link to relevant documentation]. Figure 5 , Figure 5 for Figure 3 The diagram shows another structural schematic of the detection circuit in the control device of the swing motor.

[0070] The main chip 22 also includes a reset pin RST / VPP, a serial data input port RxD / P3.0, a serial data output port TxD / P3.1, an external resonant pin XTAL2, an external resonant pin XTAL1, internal interrupt 0 INT0 / P3.2, internal interrupt 1 INT1 / P3.3, timer / counter 0 external input T0 / P3.4, timer / counter 1 external input T1 / P3.5, I / O ports P1.6, P1.5, P1.4, P1.2, analog input AIN0 / P1.1, AIN0 / P1.0, and an external data memory read pulse P3.7. The reset pin RST / VPP is used to connect a reset device to perform a reset operation on the main chip 22. The serial data input port RxD / P3.0 can be connected to a device that inputs serial data. The serial data output port TxD / P3.1 can be connected to relevant devices to output serial data from the internal main chip 22 to those devices. External resonant pins XTAL1 and XTAL2 are used to connect to relevant circuits to provide clock signals to the internal main chip 22. Internal interrupt 0 INT0 / P3.2 and internal interrupt 1 INT1 / P3.3 correspond to the pins connected when the interrupt signal is 0 and 1, respectively. Timer / counter 0 external input T0 / P3.4 and Timer / counter 1 external input T1 / P3.5 correspond to the pins connected when the external input is 0 and 1, respectively. I / O ports P1.6, P1.5, P1.4, and P1.2 can all be used as input or output ports. Analog input terminals AIN0 / P1.1 and AIN0 / P1.0 are pins connected to relevant devices to input different analog signals. The external data memory read pulse P3.7 is used to connect to related devices or circuits to obtain external data.

[0071] The conversion circuit 24 also includes input pins IN2, IN3, IN4, IN5, IN6, and IN7, and output pins OUT1, OUT2, OUT3, OUT5, OUT6, and OUT7. Input pins IN2, IN3, IN4, IN5, IN6, and IN7 are connected to relevant devices to input signals from outside the conversion circuit 24 to its pins. Correspondingly, output pins OUT1, OUT2, OUT3, OUT5, OUT6, and OUT7 are connected to relevant devices to output signals from the conversion circuit 24 to the pins of those devices. Specifically, input pins IN2, IN3, and IN4 are connected to I / O ports P1.6, P1.5, and P1.4 of the internal main chip 22, respectively, to input signals from the internal main chip 22 into the conversion circuit 24.

[0072] Interface socket 28 also includes interface 2, interface 3 and interface 4. Interface 2 is used to connect to the output pin OUT1 of conversion circuit 24, and interfaces 3 and 4 are connected to the output pins OUT2 and OUT3 of conversion circuit 24 respectively, for transmitting the signal from the indoor unit main chip 22 converted by conversion circuit 24 to swing motor 10.

[0073] It should be noted that the swing motor 10 can be understood as a four-phase, eight-step stepper motor. Interfaces 2, 3, 4, and 5 of the interface socket 28 are connected to the four phases of the swing motor, respectively. Correspondingly, the output pins OUT1, OUT2, OUT3, and 4 of the conversion circuit 24 are connected to interfaces 2, 3, 4, and 5 of the interface socket 28. The signal output terminals P1.7, I / O ports P1.6, P1.5, and P1.4 of the indoor unit main chip 22 are connected to the input pins IN1, IN2, IN3, and IN4 of the conversion circuit 24, respectively, to control the swing motor 10. One end of the detection circuit 26 can be connected to any one of the output pins OUT1, OUT2, OUT3, and 4 of the conversion circuit 24 to detect the feedback signal after the conversion circuit 24 is electrically connected to the swing motor 10, thereby detecting the operating status of the swing motor.

[0074] It should be noted that when the swing motor 10 is running normally, the signal acquisition terminal P1.3 of the indoor unit main chip 22 acquires a normal PWM signal, and the air conditioning unit 1 operates normally. When the output of the swing motor 10 is abnormal, the signal acquisition terminal P1.3 of the indoor unit main chip 22 cannot acquire a signal, and the indoor unit main chip 22 outputs a shutdown alarm. When the indoor unit main chip 22 detects a deviation between the operating angle of the swing motor 10 and the pre-stored second angle, the indoor unit main chip 22 adjusts the PWM output duty cycle to calibrate the operating angle of the swing motor 10, so that the swing motor 10 operates at the second angle.

[0075] To more clearly illustrate the control process of the swing motor 10 in the embodiments of this application, the following description will be given from the perspective of the control method of the swing motor.

[0076] For example, please refer to Figure 6 , Figure 6 This is a schematic flowchart illustrating a control method for a oscillating motor provided in an embodiment of this application. The control method for the oscillating motor is applied to a control device for the oscillating motor, which can be found in [reference needed]. Figure 1-5 The control device shown in the figure. The control device 20 for the swing motor includes an indoor unit main chip 22, a conversion circuit 24, and a detection circuit 26. The indoor unit main chip 22 is electrically connected to the conversion circuit 24. One end of the detection circuit 26 is electrically connected to the indoor unit main chip 22, and the other end of the detection circuit 26 is electrically connected to the output terminal of the conversion circuit 24. The output terminal of the conversion circuit 24 is electrically connected to the swing motor 10. The control method for the swing motor includes:

[0077] 101. The main chip of the indoor unit controls the operation of the swing motor through the conversion circuit.

[0078] The indoor unit's main chip 22 sends a control signal to the conversion circuit 24. The control signal is converted into a drive signal by the conversion circuit 24, which then sends the drive signal to the swing motor 10 to control its operation. The drive signal can be a pulse width modulation signal. By adjusting the duty cycle of the pulse width modulation signal, different drive signals can be sent to control the swing motor 10 to operate at different angles.

[0079] 102. Determine whether the feedback signal after the indoor unit's main chip is electrically connected to the conversion circuit and the swing motor is abnormal.

[0080] The detection circuit 26 transmits the feedback signal from the electrical connection between the conversion circuit 24 and the swing motor 10 to the indoor unit main chip 22. The indoor unit main chip 22 matches the feedback signal with the sent control signal. It should be noted that the feedback signal of the swing motor 10's running angle can affect the drive signal of the conversion circuit 24, thereby allowing the indoor unit main chip 22 to determine whether the running angle of the swing motor 10 is normal based on the received feedback signal, so that the indoor unit main chip 22 can adjust the control signal to ensure that the swing motor 10 can operate normally.

[0081] 103. When the indoor unit's main chip determines that the feedback signal is abnormal, the indoor unit's main chip controls the swing motor to stop and outputs an alarm signal.

[0082] The feedback signal can be understood as a pulse width modulation (PWM) signal. When the feedback signal detected by the indoor unit's main chip 22 does not match the sent control signal—for example, if the duty cycle of the feedback signal is different from or outside the preset range of the drive signal issued based on the control signal—then an abnormality in the feedback signal can be determined. After determining the abnormality, the indoor unit's main chip 22 can use the conversion circuit 24 to change the drive signal to a continuous low level to disconnect the operation of the swing motor 10. Simultaneously, an alarm signal is output to the user to alert them to the abnormality of the swing motor 10, preventing further damage and facilitating subsequent maintenance.

[0083] 104. When the indoor unit's main chip determines that the feedback signal is normal, the indoor unit's main chip controls the swing motor to operate within the first angle range.

[0084] When the feedback signal detected by the indoor unit's main chip 22 matches the sent control signal—for example, when the duty cycle of the feedback signal is approximately the same as or within a preset range as the duty cycle of the drive signal sent according to the control signal—it can be determined that the feedback signal is normal, meaning the swing motor 10 is operating normally. At this point, the operating mode of the swing motor 10 can be obtained. When the swing motor 10 is in the first operating mode, i.e., the normal operating mode, the indoor unit's main chip 22 controls the swing motor 10 to operate within a first angle range. It should be noted that when controlling the swing motor 10 to start operating, the operating angle of the swing motor 10 can be understood as the angle within the first angle range. When the pulse width modulation signal fed back by the detection circuit 24 is normal, the swing motor 10 is controlled to operate normally, that is, to continue operating within the original first angle range.

[0085] By setting up a detection circuit 26 that can detect the operating status of the swing motor 10, the indoor unit main chip 22 can monitor the operating status of the swing motor 10 in real time based on the feedback signal transmitted by the detection circuit 26.

[0086] It should be noted that the control method for the swing motor is not limited to this; for an example, please refer to [link / reference needed]. Figure 7 , Figure 7 This is another schematic flowchart illustrating the control method for the oscillating motor provided in this application embodiment. The control method for the oscillating motor is applied to a control device for the oscillating motor, which can be found in [reference needed]. Figure 1-5 The control device shown in the figure. The control method for the swing motor includes:

[0087] 201. The main chip of the indoor unit controls the operation of the swing motor through the conversion circuit.

[0088] 202. Determine whether the feedback signal after the indoor unit's main chip is electrically connected to the conversion circuit and the swing motor is abnormal.

[0089] 203. When the indoor unit's main chip determines that the feedback signal is abnormal, the indoor unit's main chip controls the swing motor to stop and outputs an alarm signal.

[0090] Regarding steps 201 to 203: please refer to the explanations for steps 101 to 103 above.

[0091] 204. When the indoor unit's main chip determines that the feedback signal is within the first preset range, the indoor unit's main chip determines that the feedback signal is normal and obtains the working mode of the swing motor.

[0092] 205. When the swing motor is in the first working mode, the main chip of the indoor unit controls the swing motor to operate within the first angle range.

[0093] 206. When the swing motor is in the second working mode, the indoor unit main chip determines whether the feedback signal is within the second preset range. The second preset range is within the first preset range and is less than the first preset range. If the feedback signal exceeds the second preset range, the indoor unit main chip adjusts the control signal and sends a drive signal to make the swing motor run within the second angle range. The second angle range is within the first angle range and is less than the first angle range.

[0094] Regarding 204-206, for example, when the duty cycle of the feedback signal matches the duty cycle of the drive signal converted from the control signal, that is, when the feedback signal is within the first preset range, it can be determined that the feedback signal is normal, which means that the swing motor 10 is operating normally. At this time, the operating mode of the swing motor 10 can be obtained. When the swing motor is in the first operating mode, the swing motor 10 is controlled to operate within the first angle range. The first operating mode can be understood as the normal operating mode, that is, when the user has no special needs. When the swing motor 10 is in the second operating mode, the indoor unit main chip 22 determines whether the feedback signal is within the second preset range. The second operating mode can be understood as the operating mode when the user has special needs. When the feedback signal exceeds the second preset range, the indoor unit main chip 22 adjusts the drive signal and outputs the adjusted drive signal to the swing motor 10 so that the swing motor 10 operates within the second angle range. Wherein, the second preset range is within the first preset range and is less than the first preset range, and the second angle range is within the first angle range and is less than the first angle range. It should be noted that the endpoint values ​​of the second preset range are within the first preset range, and the second preset range is less than the first preset range. The endpoint values ​​of the second angle range are also within the first angle range, and the second angle range is smaller than the first angle range. It should be noted that the feedback signal returned by the detection circuit 26 provided in this embodiment can initially determine whether the swing motor 10 is operating normally. After confirming that the swing motor 10 is operating normally, it then determines whether the operation of the swing motor 10 meets the user's requirements. When the feedback signal is within the first preset range but not within the second preset range, it can be determined that the swing motor 10 is operating normally and meets the user's requirements. At this time, the indoor unit main chip 22 controls the swing motor 10 to operate within the second angle range. When the feedback signal is within the second preset range, it can be determined that the swing motor 10 is operating normally but does not meet the user's requirements. At this time, the indoor unit main chip 22 controls the swing motor 10 to operate within the second angle range to meet the user's requirements. The second angle range can be a second angle range pre-stored in the indoor unit main chip 22 corresponding to different modes, or it can be a second angle range input to the indoor unit main chip 22 according to the swing angle required by the user. The drive signal is a pulse width modulation (PWM) signal. The indoor unit's main chip 22 adjusts the duty cycle of the PWM signal and outputs the adjusted PWM signal to the swing motor 10 so that the swing motor 10 operates within the second angle range. It can be understood that by modulating the duty cycle of the PWM signal, the swing motor 10 operates at the required operating angle.

[0095] The control device 20 for the swing motor with detection circuit 26 provided in this application embodiment enables the indoor unit main chip 22 of the indoor inverter air conditioner 1 to detect the actual output angle of the swing motor 10. When the swing motor 10 or the control circuit malfunctions, the indoor unit main chip 22 can promptly output an alarm and shut down the unit, preventing the indoor fan from running abnormally when the swing motor 10 is not turned on, thus improving the reliability of the air conditioner 1. Simultaneously, when the operating angle of the swing motor 10 deviates, the PWM output duty cycle can be adjusted to effectively correct the operating angle of the swing motor 10, improving the user experience of the air conditioner 1.

[0096] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0097] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0098] The control device and control method for the air conditioning equipment and its swing motor provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A control device for a swing motor, characterized by comprising: The control device comprises: an inner unit main chip; a conversion circuit electrically connected to the inner unit main chip, the conversion circuit being configured to convert a control signal transmitted by the inner unit main chip into a driving signal, and an output end of the conversion circuit being electrically connected to a swing motor; a detection circuit, one end of the detection circuit being electrically connected to the inner unit main chip, and the other end of the detection circuit being electrically connected to the output end of the conversion circuit, the detection circuit being configured to acquire a feedback signal of the swing motor after the conversion circuit is electrically connected to the swing motor, and transmit the feedback signal to the inner unit main chip; wherein the inner unit main chip is configured to initially determine, according to the feedback signal, whether the swing motor is running normally, and then determine, according to the feedback signal, whether the swing motor is running in accordance with the use requirements of a user after it is determined that the swing motor is running normally. The inner unit main chip is configured to:

2. The control device according to claim 1, characterized by when the inner unit main chip determines that the feedback signal is within a first preset range, the inner unit main chip determines that the feedback signal is normal, and acquires a working mode of the swing motor; when the swing motor is in a first working mode, the inner unit main chip controls the swing motor to run in a first angle range. The inner unit main chip is further configured to:

3. The control device of claim 2, wherein when the swing motor is in a second working mode, the inner unit main chip determines whether the feedback signal is within a second preset range, the second preset range being within the first preset range and smaller than the first preset range; if the feedback signal is out of the second preset range, the inner unit main chip adjusts the control signal and sends a driving signal to make the swing motor run in a second angle range, the second angle range being within the first angle range and smaller than the first angle range. The driving signal is a pulse width modulation signal, and the inner unit main chip adjusts the control signal and sends the driving signal to adjust a duty cycle of the driving signal to drive the swing motor to run in the second angle range.

4. The control device of claim 3, wherein When it is determined that the feedback signal is abnormal, the inner unit main chip controls the swing motor to stop running and outputs an alarm signal.

5. The control device of claim 1, wherein The detection circuit comprises:

6. The control device according to any one of claims 1 to 5, characterized by a triode comprising a base, an emitter and a collector, the collector being electrically connected to a power supply of the inner unit main chip; a first resistor, one end of the first resistor being electrically connected to the base; a second resistor, one end of the second resistor being electrically connected to the other end of the first resistor, and the other end of the second resistor being electrically connected to the output end of the conversion circuit; a third resistor, one end of the third resistor being electrically connected to the other end of the first resistor, and the other end of the third resistor being electrically connected to a ground end; a fourth resistor, one end of the fourth resistor being electrically connected to a signal acquisition end of the inner unit main chip, and the other end of the fourth resistor being electrically connected to the emitter; and a fifth resistor, one end of the fifth resistor being electrically connected to the other end of the fourth resistor, and the other end of the fifth resistor being electrically connected to the ground end. The control device further comprises:

7. The control device of claim 6, wherein an interface seat, one interface of the interface seat being plug-in connected to the output end of the conversion circuit, and the other interface of the interface seat being plug-in connected to the swing motor. ​ 8. A control method of a swing motor, applied to a control device of a swing motor, characterized by, The control device of the swing motor comprises an inner machine main chip, a conversion circuit and a detection circuit, the inner machine main chip is electrically connected with the conversion circuit, one end of the detection circuit is electrically connected with the inner machine main chip, the other end of the detection circuit is electrically connected with the output end of the conversion circuit, the output end of the conversion circuit is electrically connected with the swing motor, and the control method comprises: The inner machine main chip controls the swing motor to run through the conversion circuit; The inner machine main chip determines whether the feedback signal after the conversion circuit is electrically connected with the swing motor is abnormal; When the inner machine main chip determines that the feedback signal is abnormal, the inner machine main chip controls the swing motor to stop running and outputs an alarm signal; When the inner machine main chip determines that the feedback signal is normal, whether the running of the swing motor meets the use requirements of the user is judged according to the feedback signal.

9. The control method according to claim 8, characterized by, When the inner machine main chip determines that the feedback signal is normal, whether the running of the swing motor meets the use requirements of the user is judged according to the feedback signal, which comprises: When the inner machine main chip determines that the feedback signal is in a first preset range, the inner machine main chip determines that the feedback signal is normal, and the working mode of the swing motor is acquired; When the swing motor is in a first working mode, the inner machine main chip controls the swing motor to run in a first angle range; When the swing motor is in a second working mode, the inner machine main chip determines whether the feedback signal is in a second preset range, the second preset range is in the first preset range and smaller than the first preset range, and the second working mode is a working mode when the user has special requirements; If the feedback signal exceeds the second preset range, the inner machine main chip adjusts the control signal and sends a driving signal to make the swing motor run in a second angle range, and the second angle range is in the first angle range and smaller than the first angle range.

10. An air conditioning apparatus characterized by comprising: It comprises: A swing motor; A control device of the swing motor, which is electrically connected with the swing motor, and the control device of the swing motor is the control device according to any one of claims 1-7.

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