KR20220048317A - Air conditioner and control method of filter cleaner of the air conditioner - Google Patents

Abstract

The present invention relates to an air conditioner and a control method of a filter cleaner thereof. According to an embodiment of the present invention, the air conditioner comprises: a case for forming an inner space, and having a suction port for sucking air into the inner space and a discharging port for discharging the air of the inner space; a filter module disposed in the suction port to remove foreign substances from the air sucked into the inner space; a blowing fan disposed in the inner space, and flowing the air; a main control unit for controlling the blowing fan; and a filter cleaner including a driving motor, and removing the foreign substances adsorbed to the filter module while being moved by rotation of the driving motor. The main control unit determines whether the foreign substances are present in a movement path of the filter cleaner on the basis of a torque signal output from the driving motor, and reduces revolution per minute (RPM) of the driving motor or stops the driving motor when it is determined that the foreign substances are present. Therefore, a failure and/or an accident can be prevented.

Description

Air conditioner and control method of filter cleaner of air conditioner {Air conditioner and control method of filter cleaner of the air conditioner}

The present invention relates to an air conditioner and a method for controlling a filter cleaner of the air conditioner.

The air conditioner sucks in air from the room, cools, heats, humidifies, dehumidifies, or filters the sucked air, and then discharges it back to the room to achieve a desired level of at least one of temperature, humidity, and cleanliness of the indoor air. means a device that controls

The air conditioner includes a filter for removing foreign substances in the air sucked in the air intake portion of the room. In order for the air conditioner to exhibit proper performance, the filter of the air conditioner should be cleaned at an appropriate time according to the usage time or environment.

Recently, an air conditioner including a filter cleaner that automatically cleans a filter has been proposed. However, in the conventional air conditioner, when such a filter cleaner operates, when a foreign substance or a part of the user's body is present on the movement path of the filter cleaner, the foreign substance or a part of the user's body is transferred to the case of the filter cleaner and the air conditioner It may get caught between them, and in this case, there is a risk of malfunction and/or safety accident of the filter cleaner.

Republic of Korea Patent Publication No. 2020-0106421

SUMMARY OF THE INVENTION It is an object of the present invention to provide an air conditioner capable of preventing malfunctions and/or safety accidents that may occur due to a foreign substance or a part of a user's body being caught between a filter cleaner and a case of the air conditioner.

Another object of the present invention is to provide a method for controlling a filter cleaner of an air conditioner for achieving the above object.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned may be understood by the following description, and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the appended claims.

An air conditioner and a filter cleaner control method of an air conditioner according to an embodiment of the present invention determine whether foreign matter is present based on a signal received from a motor, and when there is a foreign material, a motor driving signal to stop the motor can be adjusted.

The air conditioner according to an embodiment of the present invention forms an inner space, a case in which an inlet for sucking air into the inner space and a discharge port for discharging air from the inner space is formed, is disposed at the inlet and sucks into the inner space It includes a filter module for removing foreign substances from the air, a blower fan disposed in the inner space and flowing air, a main control unit controlling the blower fan, and a drive motor, and moving by rotation of the drive motor and a filter cleaner that removes foreign substances adsorbed to the filter module, wherein the main control unit determines whether foreign substances are present in the movement path of the filter cleaner based on a torque signal output from the driving motor, and determines that foreign substances are present. If it is determined, the RPM (revolution per minute) of the driving motor is reduced or the driving motor is stopped.

The driving motor of the air conditioner according to an embodiment of the present invention may be a brushless direct current motor (BLDC), and the torque signal is a signal indicating information about a torque required for the driving motor to rotate at a set RPM. can

The drive motor of the air conditioner according to an embodiment of the present invention may operate in response to a drive control signal that is a pulse width modulation (PWM) signal, and the main control unit determines that foreign matter is present, the drive control signal can reduce the duty of

The air conditioner according to an embodiment of the present invention may further include a display unit for displaying the state of the air conditioner, and the main control unit does not remove the foreign material even after a set time has elapsed from the time when it is determined that the foreign material is present. Otherwise, the occurrence of an abnormality in the filter cleaner may be displayed through the display unit.

The air conditioner according to an embodiment of the present invention forms an inner space, a case in which an inlet for sucking air into the inner space and a discharge port for discharging air from the inner space is formed, is disposed at the inlet and sucks into the inner space A filter module comprising a filter module for removing foreign substances from the air, and a filter cleaning control unit for controlling a driving motor and the driving motor, and including a filter cleaner that removes foreign substances adsorbed on the filter module while moving by rotation of the driving motor and the filter cleaning control unit determines whether foreign matter is present in the movement path of the filter cleaner based on the torque signal output from the driving motor, and when it is determined that the foreign material exists, the revolution per minute (RPM) of the driving motor ) or stop the drive motor.

The driving motor of the air conditioner according to an embodiment of the present invention may be a brushless direct current motor (BLDC), and the torque signal is a signal indicating information about a torque required for the driving motor to rotate at a set RPM. can

The filter cleaning control unit of the air conditioner according to an embodiment of the present invention can control the driving motor by outputting a driving control signal, which is a pulse width modulation (PWM) signal, to the driving motor. , the duty of the driving control signal may be reduced.

The air conditioner according to an embodiment of the present invention is disposed in the inner space, and may further include a blowing fan for flowing air, a main control unit for controlling the blowing fan, and a display unit for displaying the state of the air conditioner. there is. The filter cleaning control unit may provide information that an abnormality has occurred in the filter cleaner to the main control unit if the foreign material is not removed even after a set time has elapsed from the time when it is determined that the foreign material is present. The main control unit may display abnormal occurrence of the filter cleaner through the display unit.

A method for controlling a filter cleaner of an air conditioner according to an embodiment of the present invention includes: a case having an inner space, an inlet for sucking air into the inner space, and an outlet for discharging air from the inner space; a filter module disposed to remove foreign substances from the air sucked into the inner space; and a drive motor; In the filter cleaner control method of an air conditioner including a controller for controlling a motor, the method comprising: determining, by the controller, whether foreign matter is present in a movement path of the filter tongue cleaner based on a torque signal output from the driving motor , and when it is determined that the foreign material is present, reducing, by the controller, revolution per minute (RPM) of the driving motor or stopping the driving motor.

The driving motor of the method for controlling a filter cleaner of an air conditioner according to an embodiment of the present invention may be a brushless direct current motor (BLDC), and the torque signal corresponds to a torque required for the driving motor to rotate at a set RPM. It may be a signal indicating information about the

In the method for controlling a filter cleaner of an air conditioner according to an embodiment of the present invention, the step of reducing the RPM of the driving motor or stopping the driving motor may reduce the duty of a signal applied to the driving motor.

In the method for controlling a filter cleaner of an air conditioner according to an embodiment of the present invention, if the foreign material is not removed even after a set time elapses from the time when it is determined that the foreign material is present, the control unit notifies the user of the occurrence of an abnormality in the filter cleaner may further include a step.

According to an air conditioner and a filter cleaner control method of an air conditioner according to an embodiment of the present invention, a failure and/or a problem that may occur due to a foreign substance or a part of the user's body being caught between the filter cleaner and the case of the air conditioner Or it can prevent safety accidents.

In addition to the above-described effects, the specific effects of the present invention will be described together while describing specific details for carrying out the invention below.

1 is a perspective view of an air conditioner according to an embodiment of the present invention.
2 is a side view of an air conditioner according to an embodiment of the present invention.
3 is a block diagram schematically illustrating the configuration of an air conditioner according to an embodiment of the present invention.
4 is a block diagram schematically illustrating the configuration of a filter cleaner of an air conditioner according to an embodiment of the present invention.
5 is an operation flowchart illustrating a method for controlling a filter cleaner of an air conditioner according to an embodiment of the present invention.

The above-described objects, features and advantages will be described below in detail with reference to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

Although the first, second, etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from other components, and unless otherwise stated, it goes without saying that the first component may be the second component.

In the following, that an arbitrary component is disposed on the "upper (or lower)" of a component or "upper (or below)" of a component means that any component is disposed in contact with the upper surface (or lower surface) of the component. Furthermore, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

In addition, when it is described that a component is “connected”, “coupled” or “connected” to another component, the components may be directly connected or connected to each other, but other components are “interposed” between each component. It should be understood that “or, each component may be “connected,” “coupled,” or “connected,” through another component.

Throughout the specification, unless otherwise stated, each element may be singular or plural.

As used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “consisting of” or “comprising” should not be construed as necessarily including all of the various components or various steps described in the specification, some of which components or some steps are It should be construed that it may not include, or may further include additional components or steps.

Throughout the specification, when “A and/or B” is used, it means A, B or A and B, unless otherwise stated, and when “C to D” is used, it means that there is no specific opposite description. Unless otherwise specified, it means that it is greater than or equal to C and less than or equal to D.

Hereinafter, an air conditioner and a method for controlling a filter cleaner of the air conditioner according to some embodiments of the present invention will be described.

1 is a perspective view of an air conditioner according to an embodiment of the present invention. The air conditioner 1 according to an embodiment of the present invention includes a front panel 10, a cabinet 20, a filter module 30, and a filter cleaner 100 .

The air conditioner 1 may include at least one air inlet and at least one outlet. The air conditioner 1 may suck in air from the outside of the air conditioner 1 through an air inlet. Also, the air conditioner 1 may apply at least one of cooling, heating, humidification, dehumidification, and filtering to the air outside the air conditioner 1, and then discharge the conditioned air to the outlet.

The front panel 10 may form the front exterior of the air conditioner 1 . A discharge port 11 through which air in the internal space formed by the cabinet 20 is discharged may be formed in the front panel 10 . Also, a display unit 12 capable of displaying the operating state of the air conditioner 1 and the like may be disposed on the front panel 10 .

The cabinet 20 forms an internal space in which a blowing fan (not shown), etc. are disposed, and may form the rear and side exteriors of the air conditioner 1 . The cabinet 20 may have an air intake (not shown) through which indoor air is sucked and a discharge port 21 through which air from the internal space is discharged. The air inlet (not shown) may be formed on the rear side of the cabinet 20 , and the discharge port 21 may be formed on the side surface of the cabinet 20 .

The front panel 10 and the cabinet 20 may be combined with each other to form a case of the air conditioner 1 . In addition, in the internal space formed by the cabinet 20, at least one blower fan, a heat exchanger for cooling or heating the air sucked through heat exchange, a humidification module for increasing the humidity of the sucked air, and the humidity of the sucked air At least one of the lowering dehumidifying modules may be disposed.

The filter module 20 may be disposed at the air intake port of the cabinet 20 , and may remove foreign substances from the air sucked into the air conditioner 1 . The filter module 20 may include at least one or more filters.

The filter cleaner 100 may remove foreign substances adsorbed on the filter module 20 while moving on the surface of the filter module 20 .

2 is a side view of an air conditioner according to an embodiment of the present invention. The air conditioner 1 includes a front panel 10 , a cabinet 20 , a filter module 30 , and a filter cleaner 100 . can do.

The functions and structures of the front panel 10 , the cabinet 20 , the filter module 30 , and the filter cleaner 100 may be the same as those described in FIG. 1 .

As shown in FIG. 2 , the filter cleaner 100 may remove foreign substances adsorbed on the filter module 30 while moving along the A direction.

1 and 2 show a stand-type air conditioner as an embodiment of the present invention, but the present invention is not limited thereto, and the concept of the present invention can be applied to various types of air conditioners.

3 is a block diagram schematically showing the configuration of an air conditioner according to an embodiment of the present invention. The air conditioner according to an embodiment of the present invention includes a filter cleaner 100, a main control unit 200, and a blowing fan ( 300) may be included. Although not shown in FIG. 3 , the air conditioner according to an embodiment of the present invention may further include at least one of a heat exchanger, a humidification module, and a filter module.

The filter cleaner 100 may remove foreign substances adsorbed on the filter module ( 30 in FIG. 1 or FIG. 2 ) of the air conditioner. The filter cleaner 100 may move along the surface of the filter module ( 30 in FIG. 1 or FIG. 2 ), and may include a driving motor for this purpose. In this case, the driving motor of the filter cleaner 100 may output a torque signal sen, which is information on a required torque.

The main control unit 200 determines whether foreign matter is present on the movement path of the filter cleaner 100 based on the torque signal sen, and if there is a foreign object, reduces the movement speed of the filter cleaner 100 or , it is possible to stop the movement of the filter cleaner 100 . In addition, if it is determined that the foreign material continues to exist even after the set time has elapsed, the main control unit 200 may display the content that the filter cleaner 100 needs to be checked through the display unit ( 12 in FIG. 1 ).

The main control unit 200 may receive the torque signal sen from the filter cleaner 100 . Also, the main control unit 200 may transmit a control signal con and the main power Vp for controlling the filter cleaner 100 to the filter cleaner 100 .

The main controller 200 may include at least one processing unit and a memory. Here, the processing unit may include, for example, a central processing unit (CPU), a graphic processing unit (GPU), a microprocessor, an application specific integrated circuit (ASIC), a Field Programmable Gate Arrays (FPGA), and the like, It may have a plurality of cores. The memory may be volatile memory (eg, RAM, etc.), non-volatile memory (eg, ROM, flash memory, etc.), or a combination thereof.

Also, the main controller 200 may include additional storage. Storage includes, but is not limited to, magnetic storage, optical storage, flash memory, and the like. The storage may store computer readable instructions for implementing the filter cleaner control method of the air conditioner according to an embodiment of the present invention, and other computer readable instructions for implementing an operating system, an application program, etc. can The computer readable instructions stored in the storage may be loaded into memory for execution by the processing unit.

Also, the main control unit 200 may include an input device(s) and an output device(s). Here, the input device(s) may include a voice input device, a touch input device, or any other input device, and the like. Further, the output device(s) may include, for example, one or more displays, speakers, or any other output device, or the like. The input device(s) and output device(s) may be disposed on the display unit ( 12 in FIG. 1 ).

Also, the main control unit 200 may include communication connection(s) that enable communication with other devices. Here, the communication connection(s) may include a modem, a network interface card (NIC), an integrated network interface, a radio frequency transmitter/receiver, an infrared port, a USB connection, or some other interface. Further, the communication connection(s) may include a wired connection or a wireless connection.

The blower fan 300 may operate in response to the control of the main control unit 200, and sucks air through the air intake port in which the filter module (30 in FIG. 1 or FIG. 2) is disposed, and the discharge port (FIG. 1 or FIG. 11 and/or 21 of 2) may generate a flow of air for discharging air. The blower fan 300 may be disposed in an internal space of the air conditioner (eg, an internal space formed by a cabinet ( 20 in FIG. 1 or FIG. 2 )).

Although not shown in FIG. 3 , the air conditioner according to an embodiment of the present invention may further include at least one of a heat exchanger, a humidification module, and a filter module.

4 is a block diagram schematically illustrating the configuration of a filter cleaner of an air conditioner according to an embodiment of the present invention. The filter cleaner 100 includes a converter 110 , a filter cleaning controller 120 , and an agitator 130 . , a driving motor 140 , a moving wheel 150 , and a suction motor 160 may be included.

The converter 110 may convert the main power Vp applied from the main controller ( 200 in FIG. 3 ) into the operating power Vd and output the converted power.

The filter cleaning control unit 120 may operate using the operating power Vd applied from the converter 110 . The filter cleaning control unit 120 controls the agitator control signal con_e for controlling the agitator 130 and the driving motor 140 based on the control signal con received from the main control unit 200 in FIG. 3 . A driving control signal con_d and a suction control signal con_s for controlling the suction motor 160 may be output. The filter cleaning control unit 120 may have the same configuration as the main control unit 200 described with reference to FIG. 3 . The agitator control signal con_e, the driving control signal con_d, and the suction control signal con_s may be pulse width modulation (PWM) signals.

The agitator 130 may operate in response to the agitator control signal con_e. The agitator 130 rotates while in contact with the filter module, thereby separating foreign substances adsorbed to the filter module by frictional force from the filter module.

The driving motor 140 may operate in response to the driving control signal con_d. The driving motor 140 may move the filter cleaner 100 by rotating the moving wheel 150 . Also, the driving motor 140 may output a torque signal sen. The torque signal sen may be information on revolution per minute (RPM) of the driving motor 140 or information on a torque required for the driving motor 140 to rotate at a predetermined RPM.

The driving motor 140 may include a built-in sensor. A sensor built into the driving motor 140 may sense the RPM of the driving motor 140 . The driving motor 140 may output a signal (ie, a torque signal sen) for maintaining the set RPM. For example, the drive motor 140 outputs a torque signal sen requesting to increase the torque when the sensed RPM is lower than a set RPM, and a torque signal requesting to lower the torque when the sensed RPM is higher than the set RPM. (sen) can be printed. The sensor included in the driving motor 140 may be a hole sensor.

The driving motor 140 may be a brushless direct current motor (BLDC). When the driving motor 140 is a step motor, since it is controlled to maintain the RPM even when the foreign material is caught, it is not easy to properly respond to the foreign matter. According to an embodiment of the present invention, a BLDC motor is used as the driving motor 140 . Accordingly, the air conditioner according to an embodiment of the present invention can not only determine whether a foreign material is present by using a signal fed back from the driving motor 140 , but also can appropriately respond to the foreign material being caught in the air conditioner.

The moving wheel 150 may be rotated by the driving motor 140 to move the filter cleaner 100 .

The suction motor 160 may operate in response to the suction control signal con_s. The suction motor 140 may generate a suction force to suck the foreign material adsorbed to the filter module and/or the foreign material separated from the filter module by the agitator.

According to an embodiment, the filter cleaner 100 may include only one of the agitator 130 and the suction motor 160 .

In addition, in FIG. 4 , the driving motor 140 directly provides the torque signal sen to the main control unit 200 , but the driving motor 140 transmits the torque signal sen to the filter cleaning control unit 120 . output, and the filter cleaning control unit 120 may transmit the torque signal sen to the main control unit 200 .

In addition, in FIGS. 3 and 4 , the main controller 200 determines the presence of foreign substances based on the torque signal 200 , and outputs a control signal for controlling the driving motor 140 of the filter cleaner 100 . Although the case has been exemplified, the filter cleaning control unit 120 of the filter cleaner 100 may determine whether foreign matter is present based on the torque signal 200 and control the driving motor 140 . In this case, the filter cleaning control unit 120 provides information that an abnormality has occurred in the filter cleaner 100 to the main control unit 200 if the foreign material is not removed even after a set time has elapsed from the time when it is determined that the foreign material is present. can do. Also, in this case, the main control unit 200 may display that an abnormality has occurred in the filter cleaner 100 through the display unit ( 12 in FIG. 1 ).

In addition, in FIGS. 3 and 4 , the case in which the filter cleaning control unit 120 operates in response to the control signal con received from the main control unit 200 is exemplified. Accordingly, it may be configured to directly control each component of the filter cleaner and provide the result or the state of the filter cleaner to the main controller 200 .

5 is an operation flowchart illustrating a method for controlling a filter cleaner of an air conditioner according to an embodiment of the present invention. Each step shown in FIG. 5 may be performed by the main controller ( 200 in FIG. 3 ) or the filter cleaning controller ( 120 in FIG. 4 ). Hereinafter, the main control unit (200 in FIG. 3 ) or the filter cleaning control unit ( 120 in FIG. 4 ) is collectively referred to as a control unit.

First, the control unit may move the filter cleaner 100 to the surface of the filter module (30 in FIG. 1 or FIG. 2 ) by operating the driving motor ( 140 in FIG. 4 ) (step S110 ). At the same time, the controller may operate the agitator ( 130 in FIG. 4 ) and/or the suction motor ( 160 in FIG. 4 ) to remove foreign substances adsorbed to the filter module ( 30 in FIG. 1 or 2 ).

Next, the control unit may determine whether cleaning of the filter module ( 30 in FIG. 1 or FIG. 2 ) is completed (step S120 ). For example, the control unit may determine whether cleaning is complete by determining whether the reciprocating operation has been performed for a predetermined number of times or by determining the amount of the suctioned foreign matter.

As a result of determination in step S120, if cleaning is complete, the controller may end the operation.

As a result of determination in step S120 , if cleaning is not completed, the control unit determines that foreign substances are present on the movement path of the filter cleaner 100 based on the torque signal sen output from the driving motor 140 of the filter cleaner 100 . It can be determined whether or not (step S130). For example, if the torque required for the driving motor 140 to rotate at a predetermined RPM is equal to or greater than a set first torque, the control unit may determine that the foreign material is present.

In this case, the control unit may determine whether the foreign material is present a plurality of times (eg, 3 times) at a predetermined period (eg, 1 ms), and finally determine whether the foreign material is present. For example, it may be determined that the foreign material is present only when it is determined that the foreign material is present a plurality of times, or it may be determined that the foreign material is present when it is determined that the foreign material is present more than a predetermined number of times among the plurality of times.

As a result of the determination in step S130, if there is no foreign material, the controller may perform step S110.

As a result of the determination in step S130, if foreign matter is present, the controller may control the driving motor to decrease the RPM of the driving motor or to stop the driving motor (step S140). For example, the controller may reduce the duty of the driving control signal con_d applied to the driving motor to be less than or equal to a predetermined duty.

Next, the control unit may determine whether foreign matter is removed based on the torque signal sen (step S150). For example, the controller may determine that the foreign matter has disappeared when the torque required for the driving motor to rotate at a predetermined RPM is less than the set second torque. The second torque may be equal to or smaller than the first torque.

As a result of the determination in step S150, if there is no foreign material, the controller may perform step S110.

As a result of the determination in step S150, if the foreign material is not removed, the control unit may decrease the RPM of the driving motor due to the presence of the foreign material or determine whether the time at which the driving motor is stopped has elapsed a set time (step S160).

As a result of the determination in step S160, if the set time has not elapsed, the controller may perform step S150.

As a result of the determination in step S160, if the set time has elapsed, the controller may display an abnormality of the filter cleaner through the display unit (12 of FIG. 1 ) (step S170) and end the filter cleaner control operation.

As described above, the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings disclosed in the present specification. It is obvious that variations can be made. In addition, although the effects according to the configuration of the present invention have not been explicitly described and described while describing the embodiments of the present invention, it is natural that the effects predictable by the configuration should also be recognized.

10: front panel 20: cabinet
30: filter module 100: filter cleaner

Claims (12)

a case forming an inner space and having an inlet for sucking air into the inner space and an outlet for discharging air from the inner space;
a filter module disposed in the suction port to remove foreign substances from the air sucked into the inner space;
a blowing fan disposed in the inner space and flowing air;
a main control unit for controlling the blowing fan; and
A filter cleaner including a drive motor and moving by rotation of the drive motor to remove foreign substances adsorbed on the filter module,
The main controller determines whether foreign matter is present in the movement path of the filter cleaner based on the torque signal output from the driving motor, and when it is determined that the foreign material is present, reduces revolution per minute (RPM) of the driving motor or an air conditioner that stops the drive motor.
According to claim 1,
The drive motor is a BLDC motor (Brushless Direct Current motor),
The torque signal is a signal representing information about a torque required for the driving motor to rotate at a set RPM.
According to claim 1,
The driving motor operates in response to a driving control signal that is a pulse width modulation (PWM) signal,
The main control unit reduces the duty of the driving control signal when it is determined that there is a foreign substance.
According to claim 1,
Further comprising a display unit for displaying the state of the air conditioner,
The main control unit is
The air conditioner displays an abnormal occurrence of the filter cleaner through the display unit if the foreign material is not removed even after a set time has elapsed from the point in time when it is determined that the foreign material is present.
a case forming an inner space and having an inlet for sucking air into the inner space and an outlet for discharging air from the inner space;
a filter module disposed in the suction port to remove foreign substances from the air sucked into the inner space; and
a filter cleaner comprising a drive motor and a filter cleaning control unit controlling the drive motor, and removing foreign substances adsorbed to the filter module while moving by rotation of the drive motor;
The filter cleaning control unit determines whether foreign matter is present in the movement path of the filter cleaner based on the torque signal output from the driving motor, and when it is determined that the foreign material is present, adjusts the revolution per minute (RPM) of the driving motor. An air conditioner that reduces or stops the drive motor.
6. The method of claim 5,
The drive motor is a BLDC motor (Brushless Direct Current motor),
The torque signal is a signal representing information about a torque required for the driving motor to rotate at a set RPM.
The method of claim 5, wherein the filter cleaning control unit
An air conditioner for controlling the driving motor by outputting a driving control signal, which is a pulse width modulation (PWM) signal, to the driving motor, and reducing the duty of the driving control signal when it is determined that foreign substances exist.
6. The method of claim 5,
a blowing fan disposed in the inner space and flowing air;
a main control unit for controlling the blowing fan; and
Further comprising a display unit for displaying the state of the air conditioner,
The filter cleaning control unit
If the foreign matter is not removed even after a set time has elapsed from the time when it is determined that the foreign material is present, information indicating that an abnormality has occurred in the filter cleaner is provided to the main control unit, and the main control unit provides information about the abnormality of the filter cleaner through the display unit An air conditioner that marks the occurrence.
A case which forms an inner space, an intake port for sucking air into the inner space and a discharge port for discharging air from the inner space is formed, and a filter module disposed in the suction port to remove foreign substances from the air sucked into the inner space; , a drive motor, the filter cleaner to remove foreign substances adsorbed on the filter module while moving by the rotation of the drive motor, and a control unit for controlling the drive motor In a filter cleaner control method of an air conditioner comprising: in,
determining, by the control unit, whether foreign matter is present in a movement path of the filter cleaner based on a torque signal output from the driving motor; and
and reducing, by the controller, revolution per minute (RPM) of the driving motor or stopping the driving motor when it is determined that foreign substances are present.
10. The method of claim 9,
The drive motor is a BLDC motor (Brushless Direct Current motor),
The torque signal is a signal indicating information about a torque required for the driving motor to rotate at a set RPM.
The method of claim 9, wherein reducing the RPM of the driving motor or stopping the driving motor comprises:
A filter cleaner control method for reducing the duty of a signal applied to the driving motor.
10. The method of claim 9,
The method further comprising the step of notifying, by the control unit, the occurrence of an abnormality in the filter cleaner to the user, if the foreign material is not removed even after a set time has elapsed from the time when it is determined that the foreign material is present.

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