KR100787778B1 - Control method and automatic vacuum cleaner of air conditioner air filter - Google Patents

Abstract

A device for automatic vacuum cleaning of an air conditioner filter and a control method thereof are provided to move a suction part right and left to remove impurities from an air filter by a suction part driving element which is driven by a rack gear and a pinion gear instead of a chain, thereby preventing any malfunction or failure in spite of long term use. A device for automatic vacuum cleaning of an air conditioner filter includes an upper guide rod mounted between an upper guide rod supporting die of an upper frame and an upper slide supporting element of upper blocks of vertical frames. A lower guide rod(17) is mounted between a lower guide rod supporting die of a lower frame and a lower slide supporting elements of a lower block of the vertical frames. A side guide rod(21) is mounted between a side guide rod supporting die of the lower frame and a side slide supporting element of the lower blocks. A suction part driving element(40) moves right and left along the upper and lower guide rods. The suction part driving element has a pair of vertical frames standing between the upper and lower blocks vertically and divided at both sides to form a space, a screw standing vertically between the upper and lower blocks for rotating by a screw driving motor(28), and a lifting unit(32) connected to the vertical guide rod and the screw to move in the vertical direction. A suction part(30) is connected to the lifting unit by a pipe of which a front surface is mounted with a housing(41) having a suction nozzle and a rear surface is connected to a suction pipe(45).

Description

Automatic vacuum cleaner of air conditioner for air conditioner and control method thereof {control method and automatic vacuum cleaner of air conditioner air filter}

The present invention relates to an automatic vacuum cleaning device of an air filter for an air conditioner, and a control method thereof, and more particularly, to solve the problem of lowering the operation rate due to frequent failures and delays in parts procurement caused by a conventional air conditioner cleaning device. In addition, it reduces manpower loss due to frequent failures, and in addition, improves the air quality comfortably, thereby greatly improving the quality and reliability of the product to supply consumers with high-efficiency products.

As is well known, underground metropolitan history was opened in 1993, Gwacheon Line in 1993, Bundang Line in 1994, and Ilsan Line in 1996. The Gwacheon Line is now about 13 years old, and it is time to implement the improvement project.

The underground station in the metropolitan area removes fine dust from an air filter installed inside the air conditioner to provide a comfortable environment indoors.

The air filter is installed in a vehicle, an air conditioner, an air conditioner, an air purifier, and the like, to filter foreign matters from the air introduced from the outside.

In this case, when the air filter is used for a long time, since a lot of dust accumulates, the air filter should be cleaned frequently. At this time, the air filter was cleaned using an air conditioner cleaning device.

That is, Fig. 1 (a) (b) shows a conventional air conditioner cleaning device currently used, the upper and lower drive chain 3 and the left and right drive chain (4) is operated by the drive motor 2, the suction unit (1) ) Was moved up and down or left and right to clean the air filter (5).

However, the above-described prior art has the following problems.

That is, when using the chain (3) (4) provided in the conventional air conditioner cleaning device for a long time, the problem is that the smooth operation is not made or the cut can not be used.

In addition, the prior art has been pointed out as a problem that the maintenance work is required due to the frequent failure of the chain (3) (4), which results in the loss of manpower.

In addition, the prior art has a problem that the supply of accessories is not smooth, which significantly lowers the operation rate of the air conditioner cleaning device.

In addition, the prior art has been pointed out as a problem that can not supply a comfortable air because the cleaning of the air filter is not smoothly performed according to the operation rate decrease, which is also pointed out as a problem that harms the health of the human body.

The present invention has been made in order to solve all the problems of the prior art as described above, the first object is provided with a suction unit operating means to remove the foreign matter on the air filter while moving the suction unit up, down, left and right, The second purpose is that the suction unit operating means is operated by the rack gear and pinion instead of the conventional chain, so that there is no problem even if it is used for a long time. In addition, as a result, it is possible to solve the problem that results in the loss of manpower at once, and the fourth objective is that the supply of accessories is smooth because the parts supply is not many, and even if it is, even simple parts are replaced, not complicated. The fifth purpose is the automatic vacuum of the air filter for air conditioner due to the smooth supply of parts. The purpose of the present invention is to greatly improve the operation rate of the cleaning device, and the sixth purpose is to smoothly clean the air filter in accordance with the improvement of the operation rate so that comfortable air can be supplied. The eighth object is to provide an automatic vacuum cleaning device for an air conditioner for an air conditioner, which can greatly improve the quality and reliability of the product, thereby providing a high efficiency product to the consumer.

In order to achieve the above object, the present invention comprises a pair of vertical side frames and upper and lower frames horizontally formed at upper and lower ends thereof, respectively, in a rectangular frame shape, and an air filter driven by a controller moves up, down, left, and right. In the cleaning apparatus of the air filter for the air conditioner to remove the foreign matter, the upper guide rod is provided between the upper guide rod support of the lower end of the upper frame and the upper upper slide support of the upper block located at the top of the vertical frame, the lower A lower guide rod is provided between the upper lower guide rod support of the frame and the lower lower slide support of the lower block located at the bottom of the vertical frame, and between the side guide rod support of the lower frame and the inner side slide support of the lower block. Side guide rod is provided, Suction part operating means for moving from side to side along the upper and lower guide rods is provided, and the suction part operating means is vertically established between the upper block and the lower block, and is divided into two ends so that a space is formed therebetween. It is vertically erected between the pair of vertical frames, the upper block and the lower block, the screw is rotated by the drive of the screw drive motor, and one end is connected to the vertical guide rod vertically established between the upper block and the lower block , The other end is connected to the screw is provided with a lifting operation for operating up and down, the suction part is connected to the pipe is connected to the lifting operation, the front of the pipe is provided with a housing in which the suction nozzle is installed, The rear provides an automatic vacuum cleaning device for an air filter for an air conditioner, characterized in that the suction pipe is connected and installed.

In addition, the present invention is a pair of vertical side frame and the upper and lower ends of the upper frame and the lower frame, respectively, is formed in a rectangular frame as a whole, the suction portion driven by the control unit to move the foreign matter on the air filter while moving up, down, left and right In the control method of the air filter cleaning device for an air conditioner to remove, the 1st, the 1st which is located in the four corners of the automatic vacuum cleaning device of an air filter for an air conditioner before the suction part operation means which the upper and lower parts move to left and right along a guide rod is operated Determining which one of the second, seventh, and eighth sensing units operates; Operating the sixth sensing unit after the suction unit provided in the suction unit operating unit rises when the first, second, seventh and eighth sensing units do not operate; Stopping the rising of the suction part when the fifth detection part located at the upper end of the suction part operating means is operated when the operation range is exceeded during the operation of the sixth detection part; Operating the left and right transfer timers provided in the control unit during the normal operation of the sixth detection unit; When the timer is activated, the suction unit moves to the left side; otherwise, the suction unit descends; Operating a seventh sensing unit after the suction unit moves to the left; Operating an eighth sensing unit when the operating range is exceeded, and lowering the suction unit when the operating range is not exceeded; Restoring the left and right transport timers provided in the control unit during normal operation of the seventh detection unit; Moving and stopping the suction unit to the left of the suction unit according to the timer return; Operating a fourth sensing unit according to the suction unit descending; Stopping the falling down of the suction unit when the fourth sensing unit is operated when the operating range is exceeded, and when the operating range is not exceeded, the suction unit falls down; Operating the first sensing unit after the suction unit moves to the right side during the normal operation of the fourth sensing unit; It provides a method for controlling the automatic vacuum cleaning device of the air filter for an air conditioner, characterized in that it includes; the second detection unit is operated when the operating range of the first detection unit is exceeded, otherwise stopping.

As described in detail above, the present invention is to provide a suction unit operating means to remove the foreign matter on the air filter while moving the suction unit up, down, left and right.

In addition, the present invention is that the suction unit operating means is operated by the rack gear and pinion instead of the conventional chain, so that there is no problem even if used for a long time.

The present invention also eliminates the need for maintenance work, even when used for a long time without troubles, and this is to solve the problem of bringing about manpower loss as a result.

In addition, the present invention has the advantage that the supply of accessories is smooth because the parts supply is not many, even if the diarrhea is replaced by a simple part that is not complicated.

In addition, the present invention is to improve the operation rate of the automatic vacuum cleaning device of the air filter for air conditioner parts supply smoothly.

In addition, the present invention is to facilitate the cleaning of the air filter according to the improvement of the operation rate to provide a comfortable air supply.

In addition, the present invention solves the problem of damaging the health of the human body as a result.

The present invention is a very useful invention that can significantly improve the quality and reliability of the product due to the above-described effect to supply a high-efficiency excellent product to the consumer.

Hereinafter, described in detail with reference to the accompanying drawings a preferred embodiment of the present invention for achieving this effect are as follows.

An automatic vacuum cleaning apparatus and a control method of the air filter for an air conditioner applied to the present invention is configured as shown in Figs.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

The following terms are terms set in consideration of functions in the present invention, which may vary depending on the intention or custom of the producer, and their definitions should be made based on the contents throughout the specification.

First, as shown in FIG. 2, the upper frame 10 and the lower frame 15 are horizontally formed in a pair of vertical side frames 19 and upper and lower ends thereof, respectively, to form a rectangular frame as a whole. It is provided with a cleaning device of the air filter for the air conditioner to remove the foreign matter on the air filter 60 while moving the suction unit 40 is driven up, down, left and right.

In this case, as shown in the enlarged view of FIGS. 5 and 6, between the lower upper guide rod support 11 of the upper frame 10 and the upper upper slide support 13 of the upper block 14 positioned at the upper end of the vertical frame. An upper guide rod 12 is provided, and a lower portion is provided between the upper lower guide rod support 16 of the lower frame 15 and the lower lower slide support 18 of the lower block 23 positioned at the lower end of the vertical frame. A guide rod 17 is provided, and a side guide rod 21 is provided between the side guide rod support 20 of the lower frame 15 and the inner side slide support 22 of the lower block 23. do.

In addition, the present invention is provided with the suction unit operating means 30 to move left and right along the upper and lower guide rods 12 and 17, as well as the air filter (10) provided in the suction unit operating means 30 to move up, down, left and right. 60 is provided with a suction unit 40 for removing the foreign matter buried in, the technical configuration thereof will be described in more detail as follows.

That is, the suction unit operating means 30 is vertically erected between the upper block 14 and the lower block 23, as shown in FIG. 2, and is formed to be divided at both ends while forming a space therebetween. A pair of vertical frames 31 are provided.

4, 5, and 6, the screw 34 is vertically erected between the upper block 14 and the lower block 23, and is rotated by the driving of the screw driving motor 28. And, one end is connected to the vertical guide rod 33, which is vertically established between the upper block 14 and the lower block 23, the other end is connected to the screw 34, the elevating operation mechanism for lifting up and down 32 is provided.

In addition, the suction unit operating means 30, as shown in Figure 6, 7, the rack gear drive motor 27 provided on the lower front of the lower block 23 and the pinion installed on the front of the rack gear drive motor ( 26).

In addition, it is fixed to the front of the lower frame 15 and at the same time interlocked with the pinion 26 is installed, the upper and lower guide rods 12, 17 by the suction unit operating means 30 by the rotation of the pinion (26) A rack gear 25 for moving from side to side is provided.

And the present invention is provided with the first, seventh sensing unit 50, 56, which is an operation switch on both sides of the lower end of the rectangular frame consisting of the side frame 19 and the upper and lower frames 10, 15, the suction unit Upper and lower ends of the operating means 30 are provided with sixth and fourth sensing units 55 and 53 which are operating switches.

In addition, the present invention is provided with the second and eighth detection parts 51 and 57 which are safety switches on both sides of the upper end of the rectangular frame formed of the side frames 19 and the upper and lower frames 10 and 15. Upper and lower ends of the operating means 30 are provided with third and fifth sensing units 52 and 54 which are safety switches.

In addition, the suction part 40 has a pipe 44 connected to the elevating operation hole 32, the front of the pipe 44 is provided with a housing 41, the suction nozzle 42 is installed therein, the rear Silver suction pipe 45 is installed connected.

And each corner of the housing 41 is provided with a roller 43 that can be rotated 360 degrees to move easily up, down, left, and right along the surface of the air filter (60).

In addition, a suction device (not shown in the drawing) is connected to the end of the suction pipe 45 to absorb the foreign matter buried in the air filter 60.

The suction pipe 45 is not fixed to the outer circumferential surface of the pipe 44 and is configured to flow at regular intervals so that the suction pipe when the suction part operating means 30 moves up, down, left, or right or adjusts the length of the suction pipe 45 appropriately. It is configured to move as it moves selectively.

Air filter applied to the present invention (air filter) can be used in addition to the air conditioner, vehicle, air conditioner, air purifier and the like can be used.

On the other hand, the present invention may be variously modified and may take various forms in applying the above configuration.

And it is to be understood that the invention is not limited to the specific forms referred to in the above description, but rather includes all modifications, equivalents and substitutions within the spirit and scope of the invention as defined by the appended claims. It should be understood that.

The operation and effect of the automatic vacuum cleaning device and the control method of the air filter for an air conditioner of the present invention configured as described above will be described with reference to FIG.

First, the present invention is provided with a pair of vertical side frame and the upper and lower ends of the upper and lower frames, respectively, in the shape of a rectangular frame as a whole, the foreign material on the air filter while the suction unit driven by the control unit moves up, down, left and right In the control method of the air filter cleaning device for an air conditioner, which is located at the corner of the automatic vacuum cleaning device of the air filter for the air conditioner before the suction part operating means 30, the upper and lower parts move left and right along the guide rod, The first, second, seventh, and eighth sensing units 50, 51, 56, 57 are determined to determine whether the operation is performed, wherein the first, second, seventh, When all of the eighth sensing units 50, 51, 56, 57 are not operated, the suction unit 40 provided in the suction unit operating unit is moved up. Otherwise, if any one of the first, second, seventh, and eighth sensing units 50, 51, 56, 57 is activated, an alarm sound is generated and all the operations are stopped.

Ascending of the suction part 40 is operated by the suction part operating means 30. When the screw 34 is rotated by the driving of the screw driving motor 28, the lifting lowering operation tool connected to the screw 34 is rotated. 32 is to be raised, wherein the housing 41 of the suction unit 40 is integrally connected with the lifting and lowering operation 32 is raised together and the housing 41 is the lifting and lowering operation 32 is vertical Since it is connected with the guide rod 33, it is easy to move up and down about it easily.

In addition, the foreign matter buried in the air filter 60 is suction-removed through the suction nozzle 42 provided inside the housing 41 during the process of raising the housing 41 or moving downward and left and right, which will be described later. The foreign matter sucked in this way is discharged to the outside through the pipe 44 and the suction pipe 45 to clean the air filter 60 as a result.

In addition, the suction pipe 45 fastened to the outer circumferential surface of the pipe 44 is not fixed to the outer circumferential surface of the pipe 44, and the suction pipe operating means 30 moves up, down, left, or right so as to flow at regular intervals, or the suction pipe 45 is provided. In case of properly adjusting the length of the suction pipe itself can be moved to move selectively to improve the reliability of the quality in terms of functionality.

On the other hand, when the first, second, seventh, and eighth sensing units 50, 51, 56, 57 do not operate, the sixth sensing unit 55 operates after the suction unit 40 is raised. In this case, when the operating range of the sixth sensing unit 55 exceeds the operating range, the fifth sensing unit 54 located at the upper end of the suction unit operating means operates and the operating range is not exceeded. There is a step of stopping the rise of the suction unit 40.

Subsequently, the present invention undergoes a step of operating the left and right transfer timer (not shown in the drawing) provided in the control unit during the normal operation of the sixth sensing unit 55, and the suction unit 40 when the timer operates. Moves to the left, otherwise the suction unit 40 goes down.

At this time, the operation of the timer is operated for 1 to 5 seconds, the housing 41 is moved up, down, left and right by this time, and the time can be arbitrarily set by the user.

In addition, the process of moving the suction unit 40 to the left is made by the drive of the rack gear driving motor (27).

That is, when the pinion 26 is rotated by the rack gear driving motor 27 as shown in FIGS. 6 and 7, the rack gear 25 engaged with the pinion 26 is sucked by the rotation of the pinion 26 in a fixed state. The entire non-operation means 30 is moved to the left.

At this time, the suction unit operating means 30 is the upper block 14 and the upper slide support 13 is moved along the upper guide rod 12 connected to the lower end of the upper guide rod support 11, and also the lower block The lower slide support 18 and the lower slide support 18 move along the lower guide rod 17 connected to the upper end of the lower guide rod support 16, and the lower block 23 and the side slide support 22 are The side guide rod support 20 is moved along the side guide rod 21 connected to the side.

According to the present invention, when the suction unit 40 moves to the left side and the operation range of the seventh sensing unit 56 is exceeded in the process of operating the seventh sensing unit 56, the eighth sensing unit at the upper end When 57 is operated and the operating range is not exceeded, the suction unit 40 goes down.

Thereafter, during the normal operation of the seventh sensing unit 56, the left and right transfer timers provided in the control unit are returned.

At this time, as the timer returns, the suction part 40 goes through a step in which the transfer stop and the suction part 40 descend to the left side.

The fourth sensing unit 53 is operated as the suction unit 40 descends, and when the operating range of the fourth sensing unit 53 is exceeded, the third sensing unit 52 operates. If the operating range is not exceeded, the suction unit 40 goes down and stops.

Subsequently, during the normal operation of the fourth sensing unit 53, the suction unit 40 moves to the right and then operates the first sensing unit 50, and the operating range of the first sensing unit 50 is performed. When the second detection unit 51 is over, the automatic vacuum cleaning device of the air filter for the air conditioner is controlled by the step of stopping.

On the other hand, the housing 41 applied to the present invention is easily moved up, down, left, and right by the roller 43, the roller 43 is rotated 360 degrees so that the housing 41 can be moved to any position up, down, left and right This improves the efficiency of the work.

The downward movement of the suction unit operating means 30 and the movement to the right side are performed in the reverse order of the above-described operation, that is, the screw drive motor 28 and the rack gear drive motor 27 are reversely rotated.

In the present invention, the above-described operation is repeated, the automatic vacuum cleaning device of the air filter for the air conditioner is operated.

On the other hand, when the sequence control unit (not shown in the drawing) is turned off during the operation of the second, third, fifth, and eighth sensing units 51, 52, 54, 57, the operation is stopped, After removal, normal operation starts from the stopped state or the original state, and the cleaning device is operated more efficiently.

In another aspect, the present invention provides a function that the operation is stopped when the sequence control unit is completely turned off by the power failure, and restarts from the start signal when the power failure returns.

The technical idea of the automatic vacuum cleaning device of the air filter for the air conditioner of the present invention and the control method thereof are actually capable of repeating the same result, and in particular, by implementing the present invention, it is possible to promote technology development and contribute to industrial development. Worth enough.

Figure 1 (a) is a photograph showing almost the whole of the conventional air conditioner cleaning device,

        (b) is a photograph showing the main part of the conventional air conditioner cleaning device.

Figure 2 shows an automatic vacuum cleaning apparatus of an air filter for an air conditioner applied to the present invention

        Perspective perspective.

Figure 3 shows an automatic vacuum cleaning device of the air filter for the air conditioner applied to the present invention

        Front view.

Figure 4 shows an automatic vacuum cleaning device of the air filter for an air conditioner applied to the present invention

        Side view.

Figure 5 is an enlarged side view showing the upper end of the suction unit applied to the present invention.

Figure 6 is an enlarged side view showing the lower end of the suction unit applied to the present invention.

Figure 7 is an enlarged front view showing the lower end of the suction unit applied to the present invention.

Figure 8 is a perspective view showing the main portion of the suction unit applied to the present invention.

9 is an automatic vacuum cleaning device of an air filter for an air conditioner applied to the present invention is operated.

        Flow chart of the state.

<Explanation of symbols for the main parts of the drawings>

10, 17, 19: top, bottom, side frames

30: suction unit operating means

40: suction part

50-57: 1st-8th detection parts

60: air filter

Claims (12)

delete A pair of vertical side frames 19 and upper and lower ends of the upper and lower frames 10 and 15 are provided in a horizontal frame, respectively, and have a rectangular frame shape, and a suction part 40 driven by a control unit is provided in a vertical direction. In the cleaning apparatus of the air filter for the air conditioner to remove the foreign matter on the air filter 60 while moving to, An upper guide rod 12 is provided between the lower upper guide rod support 11 of the upper frame 10 and the upper upper slide support 13 of the upper block 14 positioned at the upper end of the vertical frame. A lower guide rod 17 is provided between the upper lower guide rod support 16 of the lower frame 15 and the lower lower slide support 18 of the lower block 23 positioned at the lower end of the vertical frame. A side guide rod 21 is provided between the side guide rod support 20 of the frame 15 and the inner side slide support 22 of the lower block 23. The suction part operating means 30 is provided to move left and right along the upper and lower guide rods, and the suction part operating means is erected vertically between the upper block and the lower block, and divided into both ends to form a space therebetween. A pair of vertical frames 31, which are vertically erected between the upper block and the lower block, are rotated by the drive of the screw drive motor 34 and one end between the upper block and the lower block It is connected to a vertical guide rod that is standing vertically, the other end is provided with a lifting device 32 is connected to the screw to move up and down, The suction part 40 is a pipe 44 is connected to the elevating operation port, the front of the pipe is provided with a housing 41, the suction nozzle is installed therein, the rear is characterized in that the suction pipe 45 is connected Automatic vacuum cleaning device for air conditioners. According to claim 2, The suction unit operating means 30, A rack gear driving motor 27 provided at a lower front surface of the lower block 23 and a pinion 26 installed at the front of the rack gear driving motor; It is fixed to the front of the lower frame at the same time interlocked with the pinion is installed, the rack gear (25) for moving the suction unit operating means to the left and right along the upper and lower guide rods by the rotation of the pinion; Automatic vacuum cleaner of air filter. According to claim 2, First and seventh sensing parts 50 and 56 which are actuating switches are further provided on both sides of the lower ends of the rectangular frame having the side frames and the upper and lower frames, and the sixth and fifth actuating switches are provided at the upper and lower ends of the suction part actuating means. Automatic vacuum cleaning device of the air filter for an air conditioner, characterized in that the four sensing unit 55, 53 is further provided. According to claim 2, Second and eighth sensing parts 51 and 57 which are safety switches are further provided on both sides of the upper end of the rectangular frame having the side frame and the upper and lower frames, and the third and third safety switches are provided at the upper and lower ends of the suction part operating means. Automatic sensing device of the air filter for the air conditioner, characterized in that the five sensing unit 52, 54 is further provided. According to claim 2, Each corner of the housing 41 is an automatic vacuum cleaning device for an air filter for an air conditioner, characterized in that the roller is further rotatable 360 degrees rotatably installed so as to easily move up, down, left and right along the surface of the air filter. According to claim 2, The suction pipe 45 is not fixed to the outer circumferential surface of the pipe 44, the automatic vacuum cleaning device of the air filter for an air conditioner, characterized in that flows for a predetermined interval. A pair of vertical side frames and upper and lower ends thereof are provided with an upper frame and a lower frame, respectively, to form a rectangular frame as a whole. In the control method of the air filter cleaning device, The first, second, seventh, and eighth sensing units (50) located at the corners of the automatic vacuum cleaning device of the air filter for the air conditioner before the suction unit operating means 30, whose upper and lower portions move left and right along the guide rod, is operated. Determining which of the 51, 56, 57 works; Operating the sixth sensing unit 55 after the suction unit 40 provided in the suction unit operating unit rises when the first, second, seventh and eighth sensing units do not operate; Stopping the rising of the suction part when the fifth detection part 54 located at the upper end of the suction part operating means is operated when the operation range is exceeded during the operation of the sixth detection part; Operating the left and right transfer timers provided in the control unit during the normal operation of the sixth detection unit; When the timer is activated, the suction unit moves to the left side; otherwise, the suction unit descends; Operating the seventh sensing unit 56 after the suction unit moves to the left; Operating the eighth sensing unit 57 when the operating range of the seventh sensing unit is exceeded, and lowering the suction unit when the operating range is not exceeded; Restoring the left and right transport timers provided in the control unit during normal operation of the seventh detection unit; Moving and stopping the suction unit to the left of the suction unit according to the timer return; Operating a fourth sensing unit 53 according to the suction unit descending; Stopping the falling down of the suction part when the third sensing part 52 is operated when the operating range is exceeded during the operation of the fourth sensing part; Operating the first sensing unit 50 after the suction unit moves to the right side during the normal operation of the fourth sensing unit; And the second detecting unit (51) is operated when the operating range of the first detecting unit is exceeded, and if not, the operation is stopped. The method of claim 8, Method for controlling the automatic vacuum cleaner of the air filter for the air conditioner, characterized in that when the fifth, eighth, third, second detection unit is activated, the cleaning device is stopped while generating an alarm sound. The method of claim 8, And the suction unit moves up, down, left and right by the time when the timer operates for 1 to 5 seconds. delete delete

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