JP6095914B2 - Control device, method, program for air filter automatic cleaning mechanism, and air conditioner provided with the same - Google Patents

Description

  The present invention relates to a control device, a method, a program, and an air conditioner including the control device for an automatic air filter cleaning mechanism.

  An air filter is installed at the air inlet of the air conditioner to collect dirt contained in the air, thereby preventing contamination of internal devices such as a heat exchanger and a blower. On the other hand, accumulation of dust collected by the air filter increases air flow resistance, lowers efficiency, and causes mold. For this reason, cleaning the air filter at an appropriate frequency is an essential requirement for efficiently operating the air conditioner.

  However, air conditioners are often installed indoors at a relatively high position on the ceiling or near the ceiling, and it is very cumbersome and time-consuming to remove the air filter from the air conditioner and clean it frequently. It was. Therefore, the number of air conditioners equipped with an automatic air filter cleaning mechanism that automatically cleans the air filter is increasing. In addition to small air conditioners for general homes, large air conditioners for business use called packaged air conditioners. However, air filter automatic cleaning mechanisms are increasingly being installed mainly in ceiling-mounted air conditioners.

In Patent Document 1, the equilibrium state of the dust removal mechanism is automatically adjusted during reciprocation, so that stress is not applied to the drive mechanism and the dust removal mechanism, thereby preventing failure, malfunction, deterioration of life, and the like due to overload. Technology has been proposed.
Further, in Patent Document 2, even when the load fluctuation of the driving motor is small when an abnormality occurs and the difference from the motor current during normal operation is small, the abnormality of the automatic cleaning mechanism is surely grasped and driven. There has been proposed a technique for appropriately controlling the operation of an industrial motor.

JP 2012-13392 A JP 2011-332214 A

Incidentally, in Patent Document 1, a position detection device such as a limit switch is provided in the dust removal mechanism that moves on the air filter, and the position detection member on the air filter is located on both sides of the dust removal mechanism. It is described that the position of the dust removing mechanism is recognized and the equilibrium state is maintained by detecting. Also, if the dust removal mechanism is unable to maintain equilibrium while moving on the air filter, the motor on the dust removal mechanism on one side is turned on until the position where the position detection member is detected matches in the position detection devices on both sides. By controlling to stop, the position of the dust removal mechanism is aligned, and imbalance is prevented.
However, the method of Patent Document 1 is based on the premise that the position detection device can reliably detect the position detection member. In the actual market, the position detection device can normally detect the position detection member depending on the installation location. First, there was a problem that the dust removing mechanism stopped during the cleaning of the air filter, and a phenomenon of abnormal display occurred, resulting in a customer complaint.

  The present invention has been made in view of such circumstances, and even when the position detection member cannot be detected and the dust removing mechanism is in an unbalanced state, it can be quickly returned to the balanced state. An object of the present invention is to provide an air filter automatic cleaning mechanism control device, method, program, and air conditioner including the same.

In order to solve the above-described problems, a control device, a method, a program, and an air conditioner provided with the air filter automatic cleaning mechanism of the present invention employ the following means.
That is, the present invention is a pair of drive mechanisms disposed opposite to each other in parallel on both sides of an air filter that collects dust, and arranged in a direction orthogonal to the pair of drive mechanisms, and both end portions thereof are A control device for an automatic air filter cleaning mechanism that is connected to the pair of drive mechanisms and includes a dust removal mechanism that removes dust collected by the air filter by being moved in the extension direction of the drive mechanisms. And a pair of position detecting members having a plurality of protrusions arranged on both sides along the moving direction of the dust removing mechanism, wherein the dust removing mechanism is parallel to a direction perpendicular to the traveling direction of the dust removing mechanism. A start position at which the mechanism starts to move is provided, position detecting means for outputting an on signal indicating that the protrusion of the position detecting member has been detected, and an on signal reception interval When the ON signal is not obtained for a predetermined period by the detection timer to be measured, the positions of both ends of the dust removal mechanism are adjusted, and the dust removal mechanism is moved to at least one of the start positions. Or a recovery means that arranges the longitudinal direction of the dust removal mechanism in parallel with the start position after the movement, and the recovery means drives the motor that moves the dust removal mechanism in the traveling direction of the dust removal mechanism. state, and according to the combination of the state information of the dust removal mechanism including a stop state of the motor, the control unit of the dust removing mechanism air filter automatic cleaning mechanism for varying the pattern of recovery control to be moved to the start position provide.

  According to such a configuration, a pair of drive mechanisms that are disposed opposite to each other in parallel on both sides of an air filter that collects dust, and that are disposed in a direction orthogonal to the pair of drive mechanisms, and both ends thereof A control device for an automatic air filter cleaning mechanism comprising a dust removal mechanism that removes dust collected by an air filter by moving a portion of the drive mechanism in the extension direction of the drive mechanism. A pair of position detection members having a plurality of protrusions disposed on both sides of the dust removal mechanism along the moving direction, wherein the dust removal is parallel to a direction orthogonal to the traveling direction of the dust removal mechanism. The position at which the movement of the mechanism is started is set as the start position, and an ON signal indicating that the protrusion of the position detection member has been detected is not output by the position detection means, and the detection timer is set for a predetermined period. If the signal is not obtained, adjust the positions of both ends of the dust removal mechanism, move the dust removal mechanism to at least one start position, and move the dust removal mechanism in the longitudinal direction before, during, or after the movement. Is placed parallel to the start position.

  Thus, for example, if the on-signal is not obtained for a predetermined period even if the on-signal is not output because the position detecting unit cannot recognize the protrusion of the position detecting member and passes, the dust removing mechanism Is controlled to move to the start position, so that the equilibrium state can be quickly returned. As a result, it is possible to prevent a customer complaint that has occurred due to the fact that the projection cannot be detected as in the conventional case and the dust removal mechanism is stopped and the dust removal mechanism is stopped, and to reliably return the dust removal mechanism to the equilibrium state. it can.

In addition, since the recovery control pattern is made different according to the combination pattern that causes an abnormal stop, control according to the situation can be performed. Further, the state information of the dust removal mechanism includes information on the area on the air filter when stopped.

  The restoration means of the control device for the air filter automatic cleaning mechanism may be moved to the start position in a state where the dust removing mechanism and the air filter are separated so as not to contact each other.

  As a result, the dust removal mechanism can be moved to the start position by excluding elements that become useless frictional resistance (load).

  The control device of the air filter automatic cleaning mechanism includes a region in which the dust removing mechanism is moved in the air filter, a second region that does not include the protrusions of the pair of position detection members, and a pair of the position detection members. A first counter that counts the number of times that the dust removing mechanism is in an unbalanced state in the second region when the region including the protrusions and the region sandwiching the second region is the first region and the third region; It is preferable to include a detecting unit that detects that the dust removing mechanism is not normal when the count value of the first counter is 3 or more.

  When an unbalanced state is detected three times in a region where there is no position detection member (second region), since it is detected that it is not normal, it can be easily determined whether or not it is normal.

  The control device of the air filter automatic cleaning mechanism includes a second counter that counts the number of times that the dust removal mechanism is in an unbalanced state in the first region and the third region, and a count value of the second counter is 2. It is preferable to include increment means for incrementing the count value of the first counter when it is detected as described above.

  It is presumed that the main reason that the dust removal mechanism stops in the region where the position detection member is present (the first region and the third region) is that the position detection member could not be detected. Even if the dust removing mechanism is stopped in the first region and the third region, it is possible to provide a sufficient number of times to detect that the dust removal mechanism is not normal, and to achieve redundancy until the detection is not normal.

  This invention provides the air conditioner which comprises the control apparatus of the air filter automatic cleaning mechanism in any one of the above.

According to the present invention, a pair of drive mechanisms disposed opposite to each other in parallel on both sides of an air filter that collects dust, and a pair of drive mechanisms disposed in a direction orthogonal to the pair of drive mechanisms, both ends of the pair of drive mechanisms are disposed. The air filter automatic cleaning mechanism includes a dust removal mechanism that is connected to the drive mechanism and moves in the extension direction of the drive mechanism to remove dust collected by the air filter, A pair of position detecting members disposed on both sides of the dust removing mechanism along the moving direction and having a plurality of protrusions are parallel to a direction perpendicular to the traveling direction of the dust removing mechanism. A start position for starting movement is provided, and an on signal indicating that the projection of the position detecting member has been detected is output by the position detecting means, and the reception interval of the on signal is measured. When the ON signal is not obtained for a predetermined period by the detection timer, the positions of both ends of the dust removing mechanism are adjusted, and the dust removing mechanism is moved to at least one of the start positions. After the movement, the dust removal mechanism includes the dust removal mechanism including a direction in which the longitudinal direction of the dust removal mechanism is arranged in parallel to the start position, a traveling direction of the dust removal mechanism, a driving state of a motor that moves the dust removal mechanism, and a stop state of the motor Provided is a control method for an automatic air filter cleaning mechanism that varies a recovery control pattern for moving the dust removal mechanism to the start position in accordance with a combination of state information of the removal mechanism .

According to the present invention, a pair of drive mechanisms disposed opposite to each other in parallel on both sides of an air filter that collects dust, and a pair of drive mechanisms disposed in a direction orthogonal to the pair of drive mechanisms, both ends of the pair of drive mechanisms are disposed. A control program for an automatic air filter cleaning mechanism that includes a dust removal mechanism that is connected to the drive mechanism and moves in the extending direction of the drive mechanism to remove dust collected by the air filter, A pair of position detecting members disposed on both sides of the dust removing mechanism along the moving direction and having a plurality of protrusions are parallel to a direction perpendicular to the traveling direction of the dust removing mechanism. A start position for starting movement is provided, and a process for outputting an on signal indicating that the projection of the position detecting member has been detected by the position detecting means, and When the ON signal is not obtained for a predetermined period by the detection timer that measures the transmission interval, the positions of both ends of the dust removal mechanism are adjusted, and the dust removal mechanism is moved to at least one start position. During or after the movement, the process of arranging the longitudinal direction of the dust removing mechanism in parallel with the start position, the traveling direction of the dust removing mechanism, the driving state of the motor that moves the dust removing mechanism, and the motor An air filter automatic cleaning mechanism for causing a computer to execute a process of changing a recovery control pattern for moving the dust removal mechanism to the start position according to a combination of state information of the dust removal mechanism including a stop state. Provide a control program.

  The present invention has an effect that even if the position detecting member cannot be detected and the dust removing mechanism is in an unbalanced state, it can be quickly returned to the balanced state.

1 is a perspective view of a ceiling-embedded air conditioner according to the present invention. It is a perspective view of the ceiling panel of the air conditioner shown in FIG. It is a top view of the air filter automatic cleaning mechanism of the ceiling panel shown in FIG. It is an AA longitudinal cross-section equivalent view of the air filter automatic cleaning mechanism shown in FIG. FIG. 5 is a cross-sectional equivalent view taken along the line B-B along the moving direction of the right drive mechanism of the air filter automatic cleaning mechanism of the ceiling panel shown in FIG. 2. It is CC equivalent cross-sectional view along the moving direction of the left side drive mechanism of the air filter automatic cleaning mechanism of the ceiling panel shown in FIG. The functional block diagram of the control apparatus shown in FIG. 1 is shown. It is the figure which showed the area | region where the dust removal mechanism contained in the air filter automatic cleaning mechanism shown in FIG. 3 is moved. It is a matrix table | surface which shows the pattern of recovery control. It is a figure for demonstrating the relationship between sectional drawing of the protrusion in alignment with the moving direction of the air filter automatic cleaning mechanism of the ceiling panel shown in FIG. 2, and the position on an air filter. It is a figure for demonstrating the pattern 1 of the pattern of recovery control. It is a figure for demonstrating the pattern 2 of the pattern of recovery control. It is a figure for demonstrating the pattern 3 of the pattern of recovery control. It is a figure for demonstrating the pattern 4 of the pattern of recovery control. It is a figure for demonstrating the pattern 5 of the pattern of recovery control. It is a figure for demonstrating the pattern 6 of the pattern of recovery control. It is a figure for demonstrating the pattern 7 of the pattern of recovery control. It is a figure for demonstrating the pattern 8 of the pattern of recovery control. It is a figure for demonstrating the pattern 9 of the pattern of recovery control. It is a figure for demonstrating the pattern 10 of the pattern of recovery control. It is a figure for demonstrating the pattern 11 of the pattern of recovery control. It is a figure for demonstrating the pattern 12 of the pattern of recovery control. It is a figure of the front | former stage part of the control flow figure at the time of the air filter automatic cleaning of the air conditioner shown in FIG. It is a figure of the back | latter stage part of the control flowchart shown in FIG.

Hereinafter, a control device, a method, a program, and an air conditioner including the control device for an air filter automatic cleaning mechanism according to the present invention will be described with reference to the drawings.
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 6.
FIG. 1 is a perspective view of a ceiling-embedded air conditioner according to the present embodiment.
As shown in FIG. 1, the air conditioner 1 includes an indoor unit 2 installed on a ceiling in the room, an outdoor unit 3 installed outside the room, and a control device 50. And the outdoor unit 3 are connected to each other through two refrigerant pipes 4 each including a liquid pipe and a gas pipe and an electric wiring 5.

  As shown in FIG. 1, the outdoor unit 3 includes a compressor 6 that compresses a refrigerant, an outdoor heat exchanger 7 that exchanges heat between the refrigerant and outside air, and an outdoor fan 8 that distributes the outside air to the outdoor heat exchanger 7. And a control box 9 and the like. As shown in FIG. 1, the indoor unit 2 includes a unit main body 10 that is embedded in the ceiling, and a ceiling panel 11 that is attached to the lower part of the unit main body 10. In the unit main body 10, a turbo fan 12 is rotatably installed at the center via a fan motor (not shown), and an indoor heat exchanger 13 is installed so as to surround the turbo fan 12. A bell mouth 14 that guides indoor air to the turbo fan 12 is disposed below the turbo fan 12.

  A ceiling panel 11 is provided so as to cover the lower surface of the unit main body 10 described above. A square-shaped opening (air suction port) 15 for sucking room air is provided at the center of the ceiling panel 11, and a suction grill 16 is installed in the opening 15. The suction grill 16 is lowered with respect to the ceiling panel 11 near the floor surface in the room together with a dust box 30 and the like constituting an air filter automatic cleaning mechanism 22 to be described later via a wire 17 and a lifting motor (not shown). It can be moved up and down.

  The ceiling panel 11 is provided with four air outlets 18 corresponding to the four sides of the panel so as to surround the air inlet 15, and the indoor heat exchanger 13 passes through the air outlet 18. Cooled or heated air can be blown into the room. In the four air inlets 15, flaps 19 for adjusting the direction of the blown-out air are installed so as to be independently rotatable.

  FIG. 2 shows a perspective view of the ceiling panel 11 with the suction grille 16 removed, as viewed from below. On the back side of the ceiling panel 11, a frame body 20 having a shape corresponding to the rectangular air inlet 15 is provided, and dust in the air sucked by the turbo fan 12 through the frame body 20 is collected. A rectangular air filter 21 to be collected (in FIG. 1, the air filter 21 is removed) is installed. As the air filter 21, a known one can be used and is not particularly limited.

  Further, the frame body 20 incorporates an air filter automatic cleaning mechanism 22 that automatically removes dust collected by the air filter 21 and cleans the air filter 21. A plan view of the air filter automatic cleaning mechanism 22 is shown in FIG. 3, and FIG. The air filter automatic cleaning mechanism 22 is incorporated between the air filter 21 and the suction grill 16, and the dust box 30 constituting the air filter automatic cleaning mechanism 22 can be moved up and down together with the suction grill 16.

  On the lower surface side of the air filter 21, a pair of left and right drive mechanisms 23, which constitute an air filter automatic cleaning mechanism 22 between the suction grille 16 and opposed to each other in parallel, and the air filter 21 via the drive mechanism 23. And a dust removing mechanism 24 that is reciprocated along the lower surface. The pair of left and right drive mechanisms 23 includes a pair of drive shafts 25 extending along the air filter 21 on both the left and right sides of the air filter 21, motors (BSM1, BSM2) 26 that rotate and drive the drive shafts 25, and drive shafts And a bearing 27 that rotatably supports 25.

  The drive shaft 25 is a screw shaft having a male screw provided on the outer periphery. One end of the drive shaft 25 is connected to the motor 26 and the other end is supported by a bearing 27 so as to be rotatable. As shown in FIG. 3, the motors (BSM1, BSM2) 26 are arranged connected to one end of the drive shaft 25 and are arranged diagonally with respect to the air filter 21. With such an arrangement, the same drive shaft 25 and motor (BSM1, BSM2) 26 can be arranged on one side and the other side across the air filter 21, and the drive shaft 25 and motor The parts used as 26 can be shared.

  The dust removing mechanism 24 is disposed between the pair of left and right drive mechanisms 23 in a direction orthogonal to the drive mechanism 23, and both ends thereof are coupled to the pair of left and right drive mechanisms 23, and reciprocate in the extending direction of the drive mechanism 23. The dust collected by the air filter 21 is removed by being moved. In other words, the dust removal mechanism 24 removes dust from the lower surface of the air filter 21 by being reciprocated along the lower surface of the air filter 21 in the extending direction of the drive shaft 25.

  The dust removing mechanism 24 includes an elongate cylindrical brush 28 extending in an extending direction of the drive shaft 25, that is, a direction orthogonal to the moving direction, a brush support portion 29 that supports the brush 28, and the brush 28. And a dust box 30 for collecting the dust removed from the dust. The cylindrical brush 28 has a brush portion in which a large number of fibers extending obliquely in one direction in the circumferential direction are provided on the outer circumferential surface toward the radially outer side, and a part on the circumference is notched flat. 28C (see FIG. 5 and FIG. 6), both end shaft portions 28C are supported by the brush support portion 29, and are rotatably set via a brush motor (brush motor shaft 37) as will be described later. Has been.

  In the case of the brush 28, the brush portion provided with a large number of fibers is rotated to a position in contact with the lower surface of the air filter 21, and the brush 28 is moved along the lower surface of the air filter 21 in that state, thereby The dust collected on the lower surface of the air filter 21 (upstream surface with respect to the airflow) is scraped off by the large number of fibers of the part, and the dust can be removed from the air filter 21.

  The brush support portion 29 covers the periphery of the brush 28 and supports the brush 28 so as to be rotatable about its longitudinal axis (around the axis perpendicular to the paper surface of FIG. 4). The brush support 29 is provided with openings on the air filter 21 side and the suction grille 16 side, respectively, so that the brush 28 can come into contact with the lower surface of the air filter 21 and dust removed from the air filter 21 can be removed. It falls into the dust box 30 and can be collected.

  Furthermore, the drive shaft 25 of the pair of left and right drive mechanisms 23 is passed through both ends in the longitudinal direction of the brush support portion 29, and the female screw 29C (see FIG. 5) is engaged with the male screw provided on the outer periphery of the drive shaft 25. 3). As a result, both ends of the dust removing mechanism 24 are connected to a pair of left and right drive mechanisms 23, that is, a pair of parallel drive shafts 25, and the drive shaft 25 is rotated via the motor 26, whereby the dust removing mechanism 24. Is movable in the extending direction of the drive shaft 25.

  As shown in FIG. 4, the dust box 30 moves together with the brush 28 and the brush support portion 29 and collects dust removed from the air filter 21 by the brush 28. Further, the dust box 30 is separated from the air filter 21, the brush 28, the brush support portion 29, and the like, and can be moved up and down through the wire 17 together with the suction grill 16. The dust box 30 is provided with a collection part 31, a claw part 32, and a guide part (not shown).

  The collection unit 31 is a main body of the dust box 30 and is formed by a recess that collects dust removed from the air filter 21 by the brush 28. The concave portion of the collecting portion 31 extends in a direction orthogonal to the extending direction of the drive shaft 25, that is, along the brush 28, and is recessed toward the suction grill 16, and is removed from the air filter 21. It has a volume (depth, width, length) for storing a certain amount of dust.

  The claw portion 32 transmits movement of the brush 28 and the brush support portion 29 to the dust box 30 and integrates the brush 28 and brush support portion 29 and the dust box 30 which are separated from each other. The claw portions 32 are arranged at the four corners of the upper surface of the dust box 30 and protrude upward. The brush support portions 29 are accommodated in the four claw portions 32. That is, when the brush support portion 29 moves from the outside to the inside of the dust box 30 and comes into contact with the inclined surface of the claw portion 32, the claw portion 32 is elastically deformed and rotated, so that the brush support portion 29 has four locations. It fits in the claw portion 32.

  The guide part moves the dust box 30 along the surface of the suction grille 16 together with the rail provided on the suction grille 16 side. The guide portion is provided with a pair of wheels (not shown) at both ends in the longitudinal direction of the dust box 30. The wheel is a columnar member that is supported so as to be rotatable about a rotation axis extending in a direction orthogonal to the surface of the suction grill 16. An annular groove in which the rail is disposed is formed on the circumferential surface of the wheel.

  The rail is a plate-like member that can be attached to and detached from the suction grill 16. The rail is provided with a protrusion that extends along the surface of the suction grille 16 and extends from the outside to the inside of the suction grille 16 so that the rail protrusion and the wheel groove are engaged with each other. The wire 17 that allows the suction grill 16 and the dust box 30 to be raised and lowered with respect to the ceiling panel 11 arranged on the ceiling surface is fixed at the four corners of the frame portion, which is an edge region of the suction grill 16, and the like. An end is wound around a pulley of a lifting motor provided in the ceiling panel 11 or the unit main body 10, and the suction grill 16 and the dust box 30 can be lifted and lowered by the rotation of the lifting motor.

  Further, both end shaft portions 28C of the brush 28 are rotatably supported at both end portions of the brush support portion 29 as described above, and the brush 28 is attached to the both end shaft portions 28C as shown in FIGS. A pair of gears 36 are provided for rotation. The gear 36 is meshed with a gear 38 provided on a motor shaft (brush motor shaft) 37 of a brush motor (not shown) installed adjacent to the brush support portion 29, and is brushed via a pair of left and right brush motors. 28 is rotatable. As shown in FIGS. 5 and 6, the brush motor is installed on the opposite side of the gear 36 so that the parts can be shared.

  Furthermore, in this embodiment, as shown in FIGS. 5 and 6, as means for controlling (automatic adjustment) the reciprocation control of the dust removal mechanism 24 and the equilibrium state during the movement of the dust removal mechanism 24. A pair of left and right position detection members 39 and 40 and a pair of left and right position detection means 43 described below are provided. The pair of position detection members 39 and 40 are formed of elongated plate-like members installed along the extending direction of the drive shaft 25 on both the left and right sides of the air filter 21, and have different widths at both ends. A plurality of types of protrusions 41 and 42 are provided. The position detection means 43 is provided in the drive mechanism 23 and detects the arrangement position of the dust removal mechanism 24 by detecting contact with the position detection members 39 and 40.

  The two types of protrusions 41 and 42 having different widths include a wide protrusion 41 for detecting a start position and a turn-back position when the dust removing mechanism 24 is reciprocated during cleaning of the air filter 21, and dust in the middle of movement. The protrusion 42 is narrower than the protrusion 41 for detecting and automatically adjusting the state in which the equilibrium state is lost, such as when the removal mechanism 24 is inclined obliquely. The difference in the widths of the protrusions 41 and 42 appears as a difference in the ON time of the position detection means (limit switch) 43, so that the position can be grasped using the difference.

  The wide protrusions 41 are provided at both ends in the longitudinal direction of the position detection members 39 and 40, corresponding to the first protrusions 41A provided corresponding to the start position of the dust removing mechanism 24, and corresponding to the turn-back positions. It consists of two second protrusions 41B. Further, the narrow protrusions 42 for adjusting the equilibrium state of the dust removing mechanism 24 have a plurality of third protrusions 42 provided at predetermined intervals in the vicinity of the first and second protrusions 41A and 41B. It consists of Note that the number of the third protrusions 42 is not necessarily three, and it is sufficient that at least one third protrusion 42 is provided. Also, the position is not particularly limited, and the first and second protrusions 42 are not particularly limited. As long as it is between 2 protrusion 41A, 41B, it should just be provided in arbitrary positions.

  On the other hand, the pair of position detecting means 43 detects the first and second protrusions 41A, 41B and the third protrusion 42 and outputs an ON signal to the control device 50. In this embodiment, the limit switch BS1, BS2 is used. As shown in FIGS. 5 and 6, the pair of position detecting means (limit switches BS1 and BS2) 43 are installed in opposite directions in accordance with the position of the brush motor (brush motor shaft 37). The pair of position detecting means 43 controls the rotation of the motors (BSM1, BSM2) 26 and the pair of left and right brush motors of the pair of left and right drive mechanisms 23 during the automatic cleaning control of the air filter 21, and FIGS. The air filter 21 is automatically cleaned according to the flowchart of FIG.

  The first and second protrusions 41A, 41B and the third protrusion 42 are provided at the same interval and width with respect to the pair of left and right position detection members 39, 40. However, as is apparent from FIGS. 5 and 6, the position detection members 39 and 40 are provided at positions shifted in one direction by a predetermined dimension, that is, at the position detection member 40. The first and second protrusions 41A and 41B and the third protrusion 42 are different from the first and second protrusions 41A and 41B and the third protrusion 42 provided on the position detecting member 39 in FIG. Located on the left side. This is because the pair of left and right brush motors and the position detection means (limit switches BS1, BS2) 43 are arranged as described above so as to share parts.

  As shown in FIG. 7, the control device 50 includes a recovery unit (recovery unit) 51, a first counter 52, a second counter 53, an increment unit (increment unit) 54, and a detection unit (detection unit) 55. Yes. Here, in the pair of position detection members 39 and 40 disposed on both sides of the dust removal mechanism 24 along the moving direction, the dust removal mechanism 24 is parallel to a direction orthogonal to the traveling direction of the dust removal mechanism 24. It is assumed that a start position for starting movement is provided.

  The restoration unit 51 adjusts the positions of both ends of the dust removing mechanism 24 when the on signal is not obtained for a predetermined period by the restoration detection timer (detection timer) that measures the reception interval of the on signal, so that at least one start position The dust removing mechanism 24 is moved to a position where the longitudinal direction of the dust removing mechanism is arranged in parallel to the start position before, during or after the movement. Here, the case where the ON signal is not obtained for a predetermined period is, for example, that the pair of drive mechanisms 23 do not move in parallel and the dust removing mechanism 24 is in an unbalanced state, and the protrusions 41 provided on the position detection members 39 and 40 are provided. , 42 and the position detection means 43 are in contact (or have passed), but the state where the ON signal indicating that the position detection means 43 has detected the protrusions 41, 42 is not output continues. .

  Here, the start position is the position indicated by the first and second protrusions 41A and 41B shown in FIGS. 5 and 6, and the start position that is turned back when the drive mechanism 23 is reciprocated is called the turn-back position. It is good as well.

The restoration unit 51 also has a dust removal mechanism according to a combination of the direction of movement of the dust removal mechanism 24, the driving state of the motor that moves the dust removal mechanism 24, and the state information of the dust removal mechanism 24 including the motor stop state. The recovery control pattern (details will be described later) for moving 24 to the start position is changed. The state information of the dust removing mechanism 24 includes information on the area on the air filter 21 when the dust removing mechanism 24 is stopped.
The restoration unit 51 may be moved to the start position in a state where the dust removal mechanism 24 and the air filter 21 are separated so as not to contact each other. Thereby, the frictional resistance in the case of moving to the start position can be eliminated, and it can be moved quickly to the start position.

In the present embodiment, as shown in FIG. 8, the area in which the dust removing mechanism 24 is moved in the air filter 21 is the first area above the paper surface including the pair of protrusions 41, 42, and the pair of protrusions 41, It is assumed that a third region below the paper surface including 42 and a second region not including the pair of protrusions 41 and 42 are included.
The first counter 52 counts the number of times the on signal is not obtained for a predetermined period by the recovery detection timer in the second area. The case where the ON signal is not obtained for a predetermined period is, for example, a case where the dust removing mechanism 24 is in an unbalanced state and stopped.

The detection unit 55 detects that the dust removal mechanism 24 is not normal when the count value of the first counter 52 is 3 or more.
The second counter 53 counts the number of times the on signal is not obtained for a predetermined period by the recovery detection timer in the first area and the third area.
The increment unit 54 increments the count value of the first counter 52 when two or more count values of the second counter 53 are detected.

  Thus, different counters are used depending on the region where the dust removing mechanism 24 is in an unbalanced state. When the dust removal mechanism 24 stops in the second region that does not include the protrusions 41 and 42, it is difficult to estimate the cause of the stop. In such a case, some abnormality in the structure (for example, on the brush shaft) Considering that there is an abnormality (for example, dust, burrs, etc.), the count of the first counter having a high importance indicating the abnormality is incremented by one.

  Further, when the dust removing mechanism 24 stops in the first region and the third region that are the regions including the protrusions 41 and 42, the cause of the stop is easy to estimate, and it is difficult to say that it is a structural defect (generally, the protrusion In many cases, it is not necessary to determine that there is an abnormality. After that, when the dust removing mechanism 24 may be stopped a plurality of times in the first region and the third region, it is necessary to determine that it is abnormal. For this reason, when the number of times counted by the second counter is detected a predetermined number of times or more, it corresponds to one abnormality in the second area, and redundancy is provided until notification of the occurrence of the abnormality. That is, the second counter indicates that the degree of importance indicating abnormality is lower than that of the first counter.

  Further, even when the dust removing mechanism 24 is stopped in the first region and the third region, if the left and right motors (BSM1, BSM2) 26 are operating, the position detecting means 43 (limit switch BS1). , BS2) can be estimated to have failed to detect the ON signal on both the left and right sides. In this case, it is assumed that some defect is included in the structure, and the first counter 52 having high importance indicating abnormality is incremented by one.

Specifically, the recovery unit 51 stores a recovery control pattern, and the pattern is defined by 12 patterns. FIG. 9 shows 12 recovery control patterns determined based on the recognition position of the BSM when the dust removal mechanism 24 is stopped, the traveling direction of the dust removal mechanism 24, and the operating status of the motor 26 of the drive mechanism 23. A matrix table is shown.
Here, among the pair of position detecting means 43, the left side is the limit switch BS1, the right side is the limit switch BS2, and among the motors 26 of the pair of left and right drive mechanisms 23, the left side is BSM1, and the right side is BSM2.
The control when the brush is stopped in the region without the protrusions 41 and 42 (that is, the second region) is the recovery control A, and the brush in the region with the protrusions 41 and 42 (that is, the first region and the third region). The control in the case of stopping is referred to as recovery control B. When both BSM1 and BSM2 are stopped, the recovery detection is not performed.

FIG. 10 is a cross-sectional view of the first protrusion 41A, the second protrusion 41B, and the third protrusion 42 along the moving direction of the drive mechanism 23, the position on the air filter 21, and the detection signal of the position detection means 43. Showing the relationship. Further, the right side of FIG. 10 is the C direction, and the left side of FIG. 10 is the D direction.
For example, the dust removal mechanism 24 is moved in the C direction by the drive mechanism 23, and the position detection unit 43 detects ON2, thereby detecting that the dust removal mechanism 24 is located at the start position 0. When it is detected that the dust removing mechanism 24 is located at the position 0, it is moved in the direction D and ON1 is detected, so that the position detecting means 43 is the third protrusion 42, the protrusions a, b, The position 1, position 2, and position 3, which are positions of c, are detected. Positions 4 to 7 are recognized at a predetermined pulse pitch, and ON1 is detected on the left side of the paper surface, so that positions 10 to 10 are detected as positions of protrusions d, f, and g.

In addition, the dust removing mechanism 24 is moved in the direction D from the position 10 by the drive mechanism 23, and the position detecting unit 43 detects ON2, thereby detecting that the dust removing mechanism 24 is located at the position 11 that is the folding position. When the dust removing mechanism 24 is folded back at the position 11, the position 12, the position 13, and the position 14 are detected by detecting ON 1 by the protrusions g, f, and d. Positions 15 to 18 are recognized at a predetermined pulse pitch, and ON1 is detected on the right side of the paper surface, so that positions 21 to 19 are detected as positions of protrusions c, b, and a.
In the present embodiment, the position 0 is described as the start position, and the position 11 is the folding position. However, the present invention is not limited to this. For example, the position 11 may be the start position and the position 0 may be the folding position.

The 12-pattern recovery control corresponding to the operation status of the dust removing mechanism 24 will be described with reference to FIGS.
As shown in FIG. 11, in the first pattern, the dust removing mechanism 24 moves from the C direction toward the D direction, passes through the third region, passes through the second region, and passes through the first region. In the approached position, the protrusion 42 is detected by the left limit switch BS1, and the dust removal mechanism 24 is unbalanced and stopped without the right limit switch BS2 detecting the protrusion 42 (FIG. 11 ( a)).

  In such a case, the limit switch BS1 is turned off, the limit switch BS2 is turned on, and the motor BSM2 of the right drive mechanism is driven. When the countdown of the recovery detection timer is started, the duration of the undetected state of the protrusion 42 by the BSM2 is detected, and when the recovery timer reaches the expiration (count = 0), it is determined that the BSM2 has not detected the protrusion 42 and has passed. The recovery control mode is set (see FIG. 11B).

  When the recovery control mode is enabled, BSM1 and BSM2 are input in a predetermined direction (for example, 1500 pulses) in the forward direction (non-contact surface with the air filter), and the positions of both ends of the dust removal mechanism 24 are adjusted. (See FIG. 11C). The BSM 1 is operated in a predetermined pulse (for example, 12,000 pulses) in the D direction so that the longitudinal direction of the dust removing mechanism 24 is arranged in parallel with the start position, and dust is removed at the position 11 that is the start position in the D direction that is the traveling direction. The mechanism 24 is moved (see FIG. 11D). When it is detected that the position is the position 11, the dust removing mechanism 24 is stopped (see FIG. 11E).

  As shown in FIG. 12, in the second pattern, the dust removing mechanism 24 moves from the C direction toward the D direction, passes through the third region, passes through the second region, and passes through the first region. In the approached position, the projection 42 is detected by the right limit switch BS2, and the dust removal mechanism 24 is unbalanced and stopped without detecting the projection 42 by the left limit switch BS1 (FIG. 12 ( a)).

In such a case, the limit switch BS2 is turned off, the limit switch BS1 is turned on, and the motor BSM1 of the left drive mechanism is driven. When the countdown of the recovery detection timer is started, the continuation period of the non-detection state of the protrusion 42 by the BSM1 is detected, and when the recovery timer expires (count = 0), it is determined that the BSM1 has not detected the protrusion 42 and has passed. The recovery control mode is set (see FIG. 12B).
When the recovery control mode is enabled, BSM1 and BSM2 are input in a predetermined direction (for example, 1500 pulses) in the forward direction (non-contact surface with the air filter), and the positions of both ends of the dust removal mechanism 24 are adjusted. (See FIG. 12C). The BSM 2 is operated in a predetermined pulse (for example, 12,000 pulses) in the D direction so that the longitudinal direction of the dust removing mechanism 24 is arranged in parallel with the start position, and dust is removed at the position 11 that is the start position in the D direction that is the traveling direction. The mechanism 24 is moved (see FIG. 12D). The dust removal mechanism 24 is stopped when it is detected that the position is the position 11 (see FIG. 12E).

  As shown in FIG. 13, in the third pattern, the dust removal mechanism 24 moves from the D direction toward the C direction, passes through the first area, passes through the second area, and passes through the third area. In the approached position, the protrusion 42 is detected by the left limit switch BS1, and the dust removal mechanism 24 is unbalanced and stopped without the right limit switch BS2 detecting the protrusion 42 (FIG. 13 ( a)).

  In such a case, the limit switch BS1 is turned off, the limit switch BS2 is turned on, and the motor BSM2 of the right drive mechanism is driven. When the countdown of the recovery detection timer is started, the duration of the undetected state of the protrusion 42 by the BSM2 is detected, and when the recovery timer reaches the expiration (count = 0), it is determined that the protrusion 42 has not been detected by the BSM2 and has passed. The recovery control mode is set (see FIG. 13B).

  When the recovery control mode is enabled, BSM1 and BSM2 are input in a predetermined direction (for example, 1500 pulses) in the forward direction (non-contact surface with the air filter), and the positions of both ends of the dust removal mechanism 24 are adjusted. (See FIG. 13C). The BSM 1 is operated in a predetermined direction (for example, 12000 pulses) in the C direction so that the longitudinal direction of the dust removing mechanism 24 is arranged in parallel to the start position, and dust is removed at the position 0 which is the start position in the C direction which is the traveling direction. The mechanism 24 is moved (see FIG. 13D). When it is detected that the position is the position 0, the dust removing mechanism 24 is stopped (see FIG. 13E).

As shown in FIG. 14, in the fourth pattern, the dust removing mechanism 24 moves from the D direction toward the C direction, passes through the first area, passes through the second area, and moves into the third area. In the approached position, the protrusion 42 is detected by the right limit switch BS2, and the dust removal mechanism 24 is unbalanced and stopped without detecting the protrusion 42 by the left limit switch BS1 (FIG. 14 ( a)).
In such a case, the limit switch BS2 is turned off, the limit switch BS1 is turned on, and the motor BSM1 of the left drive mechanism is driven. When the countdown of the recovery detection timer is started, the duration of the non-detection state of the protrusion 42 by the BSM1 is detected, and when the recovery timer expires (count = 0), it is determined that the protrusion 42 could not be detected by the BSM1 and passed. The recovery control mode is set (see FIG. 14B).

  When the recovery control mode is enabled, BSM1 and BSM2 are input in a predetermined direction (for example, 1500 pulses) in the forward direction (non-contact surface with the air filter), and the positions of both ends of the dust removal mechanism 24 are adjusted. (See FIG. 14C). The BSM2 is operated in a predetermined direction (for example, 12,000 pulses) in the C direction so that the longitudinal direction of the dust removing mechanism 24 is arranged in parallel with the start position, and the dust is removed at the position 0 which is the start position in the C direction which is the traveling direction. The mechanism 24 is moved (see FIG. 14D). When it is detected that the position is the position 0, the dust removing mechanism 24 is stopped (see FIG. 14E).

As shown in FIG. 15, in the fifth pattern, the dust removing mechanism 24 moves from the C direction toward the D direction, and in the third region, the protrusion 42 is detected by the left limit switch BS1, and the right side This shows a case where the limit switch BS2 does not detect the protrusion 42 and the dust removing mechanism 24 becomes unbalanced and stops (see FIG. 15A).
In such a case, the limit switch BS1 is turned off, the limit switch BS2 is turned on, and the motor BSM2 of the right drive mechanism is driven. When the countdown of the recovery detection timer is started, the duration of the undetected state of the protrusion 42 by the BSM2 is detected, and when the recovery timer reaches the expiration (count = 0), it is determined that the BSM2 has not detected the protrusion 42 and has passed. Then, the recovery control mode is set (see FIG. 15B).

  When the recovery control mode is enabled, BSM1 and BSM2 are input in a predetermined direction (for example, 1500 pulses) in the forward direction (non-contact surface with the air filter), and the positions of both ends of the dust removal mechanism 24 are adjusted. (See FIG. 15C). Operate a predetermined pulse (for example, 20000 pulses) larger than the amount of pulses given when the dust removal mechanism 24 is in an unbalanced state in the second region in the D direction to move the BSM1 in the D direction. Place it parallel to the start position. When the BSM 1 is turned off during the 20000 pulse operation, the pulse output is stopped, and the dust removing mechanism 24 is moved to the position 11 that is the start position in the D direction that is the traveling direction. Further, when the BSM 1 remains in the ON state, the pulse is completely generated and the dust removing mechanism 24 is moved to the position 11 that is the start position in the D direction (see FIG. 15D). When it is detected that the position is the position 11, the dust removal mechanism 24 is stopped (see FIG. 15E).

As shown in FIG. 16, in the sixth pattern, the dust removal mechanism 24 moves from the C direction toward the D direction, and in the third region, the protrusion 42 is detected by the right limit switch BS2, and the left side This shows a case where the limit switch BS1 does not detect the protrusion 42 and the dust removing mechanism 24 becomes unbalanced and stops (see FIG. 16A).
In such a case, the limit switch BS2 is turned off, the limit switch BS1 is turned on, and the motor BSM1 of the left drive mechanism is driven. When the countdown of the recovery detection timer is started, the continuation period of the non-detection state of the protrusion 42 by the BSM1 is detected, and when the recovery timer expires (count = 0), it is determined that the BSM1 has not detected the protrusion 42 and has passed. The recovery control mode is set (see FIG. 16B).

  When the recovery control mode is enabled, BSM1 and BSM2 are input in a predetermined direction (for example, 1500 pulses) in the forward direction (non-contact surface with the air filter), and the positions of both ends of the dust removal mechanism 24 are adjusted. (See FIG. 16C). Operate a predetermined pulse (for example, 20000 pulses) larger than the amount of pulses given when the dust removal mechanism 24 is in an unbalanced state in the second region in the D direction in the BSM2 to change the longitudinal direction of the dust removal mechanism 24 Place it parallel to the start position. When the BSM2 is turned off during the 20000 pulse operation, the pulse output is stopped, and the dust removing mechanism 24 is moved to the position 11 that is the start position in the D direction that is the traveling direction. Further, when the BSM2 remains in the ON state, the pulse is completely generated and the dust removing mechanism 24 is moved to the position 11 that is the start position in the D direction (see FIG. 16D). When it is detected that the position is the position 11, the dust removing mechanism 24 is stopped (see FIG. 16E).

As shown in FIG. 17, in the seventh pattern, the dust removing mechanism 24 moves from the D direction toward the C direction. In the first region, the protrusion 42 is detected by the left limit switch BS1 and the right side is detected. This shows a case where the limit switch BS2 does not detect the protrusion 42 and the dust removing mechanism 24 becomes unbalanced and stops (see FIG. 17A).
In such a case, the limit switch BS1 is turned off, the limit switch BS2 is turned on, and the motor BSM2 of the right drive mechanism is driven. When the countdown of the recovery detection timer is started, the duration of the undetected state of the protrusion 42 by the BSM2 is detected, and when the recovery timer reaches the expiration (count = 0), it is determined that the BSM2 has not detected the protrusion 42 and has passed. The recovery control mode is set (see FIG. 17B).

  When the recovery control mode is enabled, BSM1 and BSM2 are input in a predetermined direction (for example, 1500 pulses) in the forward direction (non-contact surface with the air filter), and the positions of both ends of the dust removal mechanism 24 are adjusted. (See FIG. 17C). Operate a predetermined pulse (for example, 20000 pulses) larger than the pulse amount given when the dust removal mechanism 24 is in an unbalanced state in the second region in the C direction in the BSM1 to change the longitudinal direction of the dust removal mechanism 24 Place it parallel to the start position. When the BSM 1 is turned off during the 20000 pulse operation, the pulse output is stopped and the dust removing mechanism 24 is moved to the position 0 which is the start position in the C direction which is the traveling direction. Further, when the BSM 1 remains in the ON state, the pulse is completely generated and the dust removing mechanism 24 is moved to the position 0 that is the start position in the C direction (see FIG. 17D). When it is detected that the position is the position 0, the dust removing mechanism 24 is stopped (see FIG. 17E).

As shown in FIG. 18, in the eighth pattern, the dust removing mechanism 24 moves from the D direction toward the C direction. In the first area, the protrusion 42 is detected by the right limit switch BS2, and the left side This shows a case where the limit switch BS1 does not detect the protrusion 42 and the dust removing mechanism 24 becomes unbalanced and stops (see FIG. 18A).
In such a case, the limit switch BS2 is turned off, the limit switch BS1 is turned on, and the motor BSM1 of the left drive mechanism is driven. When the countdown of the recovery detection timer is started, the continuation period of the non-detection state of the protrusion 42 by the BSM1 is detected, and when the recovery timer expires (count = 0), it is determined that the BSM2 has failed to detect the protrusion 42 and has passed. Then, the recovery control mode is set (see FIG. 18B).

  When the recovery control mode is enabled, BSM1 and BSM2 are input in a predetermined direction (for example, 1500 pulses) in the forward direction (non-contact surface with the air filter), and the positions of both ends of the dust removal mechanism 24 are adjusted. (See FIG. 18C). Operate a predetermined pulse (for example, 20000 pulses) larger than the pulse amount given when the dust removal mechanism 24 is in an unbalanced state in the second region in the C direction in the BSM2 to change the longitudinal direction of the dust removal mechanism 24 Place it parallel to the start position. When the BSM2 is turned off during the 20000 pulse operation, the pulse output is stopped, and the dust removing mechanism 24 is moved to the position 0 which is the start position in the C direction which is the traveling direction. Further, when the BSM2 remains in the ON state, the pulse is completely generated and the dust removing mechanism 24 is moved to the position 0 that is the start position in the C direction (see FIG. 18D). The dust removal mechanism 24 is stopped when it is detected that the position is the position 0 (see FIG. 18E).

As shown in FIG. 19, in the ninth pattern, the dust removing mechanism 24 moves from the C direction toward the D direction, passes through the third region, and in the second region, the motors of the left and right drive mechanisms Although the BSM1 and BSM2 are in operation, for example, an event such that the motor BSM2 on one side does not advance as expected due to dust occurs, and the dust removal mechanism 24 becomes unbalanced and stops ( (See FIG. 19 (a)).
In such a case, when the duration of the non-detection state of the protrusion 42 is detected by the BSM 2 and the recovery timer expires (count = 0), it is determined that an unbalanced state has occurred and the recovery control mode is set (FIG. 5). 19 (b)).

  When the recovery control mode is enabled, BSM1 and BSM2 are input in a predetermined direction (for example, 1500 pulses) in the forward direction (non-contact surface with the air filter), and the positions of both ends of the dust removal mechanism 24 are adjusted. (See FIG. 19C). Each of BSM1 and BSM2 is operated by a predetermined pulse (for example, 12000 pulses) in the C direction opposite to the D direction which is the traveling direction (see FIG. 19D). When it is detected that the position is the position 0, the dust removing mechanism 24 is stopped (see FIG. 19E).

As shown in FIG. 20, in the tenth pattern, the dust removal mechanism 24 moves from the D direction toward the C direction, passes through the first area, and in the second area, the motors of the left and right drive mechanisms Although the BSM1 and BSM2 are in operation, for example, an event such that the motor BSM2 on one side does not advance as expected due to dust occurs, and the dust removal mechanism 24 becomes unbalanced and stops ( (See FIG. 20 (a)).
In such a case, when the duration of the non-detection state of the protrusion 42 is detected by the BSM 2 and the recovery timer expires (count = 0), it is determined that an unbalanced state has occurred and the recovery control mode is set (FIG. 5). 20 (b)).

  When the recovery control mode is enabled, BSM1 and BSM2 are input in a predetermined direction (for example, 1500 pulses) in the forward direction (non-contact surface with the air filter), and the positions of both ends of the dust removal mechanism 24 are adjusted. (See FIG. 20C). Each of BSM1 and BSM2 is operated by a predetermined pulse (for example, 12000 pulses) in the D direction opposite to the C direction in the traveling direction (see FIG. 20D). When it is detected that the position is the position 11, the dust removing mechanism 24 is stopped (see FIG. 20E).

In the eleventh pattern, the dust removing mechanism 24 moves from the C direction toward the D direction, passes through the third region, passes through the second region, and in the middle of the first region, Although the motors BSM1 and BSM2 are in operation, for example, an event such as the motor BSM2 on one side not moving as expected due to dust occurs, and the dust removal mechanism 24 cannot turn on the position recognition switch. This is shown (see FIG. 21 (a)).
In such a case, the motor BSM1 of the left drive mechanism and the motor BSM2 of the right drive mechanism are driven. When the countdown of the recovery detection timer is started, the duration of the undetected state of the protrusion 42 by the BSM2 is detected, and when the recovery timer reaches the expiration (count = 0), it is determined that the BSM2 has not detected the protrusion 42 and has passed. The recovery control mode is set (see FIG. 21B).

  When the recovery control mode is enabled, BSM1 and BSM2 are input in a predetermined direction (for example, 1500 pulses) in the forward direction (non-contact surface with the air filter), and the positions of both ends of the dust removal mechanism 24 are adjusted. (See FIG. 21C). Each of BSM1 and BSM2 is operated by a predetermined pulse (for example, 12000 pulses) in the C direction opposite to the D direction in the traveling direction (see FIG. 21D). When it is detected that the position is the position 0, the dust removing mechanism 24 is stopped (see FIG. 21E).

In the twelfth pattern, the dust removing mechanism 24 moves from the D direction toward the C direction, passes through the first region, passes through the second region, and in the middle of the third region, Although the motors BSM1 and BSM2 are in operation, for example, an event such as the motor BSM2 on one side not moving as expected due to dust occurs, and the dust removal mechanism 24 cannot turn on the position recognition switch. This is shown (see FIG. 22A).
In such a case, the motor BSM1 of the left drive mechanism and the motor BSM2 of the right drive mechanism are driven. When the countdown of the recovery detection timer is started, the duration of the undetected state of the protrusion 42 by the BSM2 is detected, and when the recovery timer reaches the expiration (count = 0), it is determined that the BSM2 has not detected the protrusion 42 and has passed. The recovery control mode is set (see FIG. 22B).

  When the recovery control mode is enabled, BSM1 and BSM2 are input in a predetermined direction (for example, 1500 pulses) in the forward direction (non-contact surface with the air filter), and the positions of both ends of the dust removal mechanism 24 are adjusted. (See FIG. 22C). Each of BSM1 and BSM2 is operated by a predetermined pulse (for example, 12000 pulses) in the D direction opposite to the C direction in the traveling direction (see FIG. 22D). When it is detected that the position is the position 11, the dust removing mechanism 24 is stopped (see FIG. 22E).

  Here, the ninth to twelfth patterns assume a state in which the shaft is stopped although both BSM1 and BSM2 are operating in the ON state. In such a case, it is not known which of the BSMs 1 and 2 is leading, and it is unclear which one should be returned, so the parallel state cannot be achieved. In operation, since both BSM1 and 2 are in the ON state, it is presumed that they are tightened, so that the tightening amount is loosened by rotating in the direction opposite to the traveling direction, and the shaft can be moved. It returns to any one of the start positions. As a result, the parallel state is achieved at the start position.

Next, air filter automatic cleaning control by the air filter automatic cleaning mechanism 22 will be described in detail with reference to the flowcharts of FIGS.
When the automatic cleaning control of the air filter 21 is started, the dust removing mechanism 24 is first moved in the C direction (start position direction) by the drive mechanism 23 until ON2 detection (detection of the first protrusion 41A). This is for confirming that the dust removing mechanism 24 is located at the start position. When the position of the dust removing mechanism 24 is confirmed, automatic cleaning of the air filter 21 is started. In this state, the brush 28 is rotated by the brush motor (brush motor shaft 37) to a position where the brush portion is in contact with the lower surface of the air filter 21.

  When the dust removal mechanism 24, that is, the brush 28 is moved forward from the start position toward the turn-back position, ON edge detection (detection of the protrusion 42) is performed. When the ON edge is detected, it is determined whether or not the pair of left and right position detection means (limit switches BS1, BS2) 43 are both ON1 detected (detection of the protrusion 42). Here, if only one position detecting means 43 detects ON1, the motor (BSM1, BSM2) 26 on the drive mechanism 23 side corresponding to the position detecting means 43 is stopped, and the other motor (BSM1, BSM2). 26 is rotated until the other position detecting means 43 detects ON1.

  That is, when it is determined that only one limit switch BS2 (position detecting means 43) is ON, the corresponding motor BSM2 (motor 26) is stopped. In this case, the other limit switch BS1 (position detecting means 43) is stopped. ) Is turned on, only the corresponding motor BSM1 (motor 26) is rotated. Conversely, if it is determined that only the limit switch BS1 (position detecting means 43) is ON, the corresponding motor BSM1 (motor 26) is stopped. In this case, the limit switch BS2 (position detecting means 43) is ON. Until this is done, only the corresponding motor BSM2 (motor 26) is rotated.

Here, when it is determined that only one limit switch is ON, the other limit switch is not ON, and the recovery detection timer detects that a predetermined period has elapsed, the recovery control of this embodiment is started. The
Specifically, when the brush 28 stops moving in an unbalanced state while moving on the filter surface, a recovery detection timer that counts a predetermined time starts counting down from the time when the protrusion provided on the filter surface was previously detected by the brush. (Step SA1 in FIG. 23). If the next protrusion is detected before the count of the recovery detection timer becomes 0 due to the countdown, this process ends as “no abnormality” (No in step SA1 in FIG. 23). If the next protrusion is not detected before the recovery detection timer reaches 0 (Yes in step SA1 in FIG. 23), the recovery detection timer is set again as “abnormal” (step SA2 in FIG. 23). .

  It is determined whether or not the operation mode is individual control (step SA3 in FIG. 23). If the operation mode is individual control, the first counter 52 is incremented by one (step SA4 in FIG. 23). If the operation mode is not individual control, it is determined whether the recovery detection type is type A (recovery control A) or type B (recovery control B) among the 12 patterns of recovery control types described above (step SA5 in FIG. 23). ). In the case of the type A in which the brush stops in the second region other than the first region and the third region, the brush is stopped by the motor (BSM) 26 of the drive mechanism (step SA6 in FIG. 23), and the brush motor ( BM) so that the brush is not in contact with the filter surface (step SA7 in FIG. 23), and the brush is moved in the direction of travel or in the direction opposite to the direction of travel (step SA8 in FIG. 23). Is incremented by 1 (step SA9 in FIG. 23).

  Further, in the case of the type B in which the brush stops in the first region or the third region, the brush is stopped by the motor (BSM) 26 of the drive mechanism (step SA10 in FIG. 23), and the brush motor (BM) Whether the brush is moved away from the filter surface (step SA11 in FIG. 23), the brush is moved in the traveling direction or moved in the direction opposite to the traveling direction (step SA12 in FIG. 23), and a brush switch is detected. Is determined (step SA13 in FIG. 23). If the brush switch is not detected, the first counter 52 is incremented by 1 (step SA14 in FIG. 23).

  If a brush switch is detected, the second counter 53 is incremented by 1 (step SA15 in FIG. 23). Subsequently, it is determined whether or not the count number of the second counter 53 is 2 or more (step SA16 in FIG. 23). If smaller than 2, the process proceeds to the next step. When the count number of the second counter 53 is 2 or more, the counter of the second counter 53 is set to 0 (step SA17 in FIG. 23), and the first counter 52 is incremented by 1 (step SA18 in FIG. 23).

  It is determined whether or not the cleaning progress degree is 100% (step SB1 in FIG. 24). If not 100%, the process proceeds to step SB4 in FIG. When the cleaning progress degree is 100%, the counter of the first counter 52 is set to 0 (step SB2 in FIG. 24), and the counter of the second counter 53 is set to 0 (step SB3 in FIG. 24). It is determined whether or not the specified cumulative number of the first counter 52 is less than 3 (step SB4 in FIG. 24). If it is less than 3, the abnormality is not displayed and the brush is returned to the start position (see FIG. 24). Step SB5), the movement of the brush is stopped (step SB9 in FIG. 24), and this process is terminated. When the specified cumulative number of times of the first counter 52 is 3 times or more, the first counter 52 is set to 0 (step SB6 in FIG. 24), the second counter 53 is set to 0 (step SB7 in FIG. 24), and the abnormality is determined. “Inspection A”, which is a notification, is displayed (step SB8 in FIG. 24), the movement of the brush is stopped (step SB9 in FIG. 24), and this process ends.

The control device 50 according to the above-described embodiment may be configured to process all or a part of the above processing using software separately. In this case, the control device 50 includes a main storage device such as a CPU and a RAM, and a computer-readable recording medium in which a program for realizing all or part of the above processing is recorded. Then, the CPU reads out the program recorded in the storage medium and executes information processing / calculation processing, thereby realizing the same processing as the control device 50 described above.
Here, the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Alternatively, the computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program.

As described above, according to the control device, method, program, and air conditioner including the air filter automatic cleaning mechanism according to the present embodiment, the following operational effects can be obtained.
In the pair of position detection members 39 and 40 arranged on both sides of the movement direction of the dust removal mechanism 24, the movement of the dust removal mechanism 24 parallel to the direction orthogonal to the traveling direction of the dust removal mechanism 24 is performed. The start position is a start position, and when the pair of drive mechanisms do not move in parallel and the dust removal mechanism 24 is in an unbalanced state, the positions of both ends of the dust removal mechanism 24 are adjusted and at least one start is made. The dust removing mechanism 24 is moved to a position, and the longitudinal direction of the dust removing mechanism 24 is arranged in parallel to the start position before, during or after the movement.
Thus, even when the dust removing mechanism 24 is in an unbalanced state during movement, it can be quickly returned to the balanced state. As a result, it is possible to prevent claims that have occurred each time due to the occurrence of an unbalance as in the prior art.

  In the present embodiment, the state where the brush is stopped, the motor (BSM) of the drive mechanism, and the state of the brush shaft are arranged in a matrix table, so that the analysis can be performed according to the state (situation) of each actuator. It is possible to clarify the pattern to stop and easily realize a recovery operation that matches it. Since the pattern in which the dust removing mechanism 24 stops is classified by the matrix table, by storing the matrix table in the storage unit or the like in advance, the control program can perform processing such as reading with reference to the matrix table, Creation or configuration of the control program is simplified.

  Further, when the dust removal mechanism 24 is unbalanced and moved parallel to the start position, the dust removal mechanism 24 is moved away from the air filter surface, so that an extra load on the drive mechanism 23 and the dust removal mechanism 24 is eliminated. , Can be moved quickly.

1 Air conditioner 15 Opening (air inlet)
21 Air Filter 22 Air Filter Automatic Cleaning Mechanism 23 Drive Mechanism 24 Dust Removal Mechanism 28 Brush 30 Dust Box 37 Motor Shaft (Brush Motor Shaft)
39, 40 Position detection member 41 Protrusion 41A First protrusion 41B Second protrusion 42 Protrusion (third protrusion)
43 position detection means 50 control device 51 recovery unit 52 first counter 53 second counter 54 increment unit 55 detection unit

Claims (7)

A pair of drive mechanisms arranged in parallel and opposite on both sides of an air filter that collects dust, and arranged in a direction orthogonal to the pair of drive mechanisms, both ends of which are connected to the pair of drive mechanisms A control device for an automatic air filter cleaning mechanism comprising a dust removal mechanism that is connected and moved in the extending direction of the drive mechanism to remove dust collected by the air filter;
A pair of position detecting members disposed on both sides of the dust removing mechanism along the moving direction and having a plurality of protrusions are parallel to a direction perpendicular to the traveling direction of the dust removing mechanism. There is a start position to start moving,
Position detecting means for outputting an ON signal indicating that the protrusion of the position detecting member has been detected;
When the ON signal is not obtained for a predetermined period by the detection timer that measures the ON signal reception interval, the positions of both ends of the dust removal mechanism are adjusted to move the dust removal mechanism to at least one start position. Recovery means for arranging the longitudinal direction of the dust removing mechanism in parallel with the start position before, during or after the movement ,
The recovery means includes the dust removal mechanism according to a combination of a traveling direction of the dust removal mechanism, a driving state of a motor that moves the dust removal mechanism, and state information of the dust removal mechanism including a stop state of the motor. the control device of the air filter automatic cleaning mechanism for varying the pattern of recovery control to be moved to the start position. 2. The control device for an air filter automatic cleaning mechanism according to claim 1, wherein the recovery means moves the dust removal mechanism and the air filter to the start position in a state where they are separated so as not to contact each other. When the area where the dust removing mechanism is moved in the air filter is a second area that does not include the protrusion, and a first area and a third area that include the protrusion and sandwich the second area,
A first counter that counts the number of times the ON signal is not obtained for a predetermined period by the detection timer in the second region;
When the count value of said first counter has been detected three or more, the control of the air filter automatic cleaning mechanism according to claim 1 or claim 2, and a detection means for detecting that the dust removing mechanism is not normal apparatus. A second counter that counts the number of times that the ON signal is not obtained for a predetermined period by the detection timer in the first region and the third region;
4. The control device for an automatic air filter cleaning mechanism according to claim 3 , further comprising: increment means for incrementing the count value of the first counter when the count value of the second counter is detected to be 2 or more. The air conditioner which comprises the control apparatus of the air filter automatic cleaning mechanism in any one of Claims 1-4 . A pair of drive mechanisms arranged in parallel and opposite on both sides of an air filter that collects dust, and arranged in a direction orthogonal to the pair of drive mechanisms, both ends of which are connected to the pair of drive mechanisms A control method of an automatic air filter cleaning mechanism comprising a dust removal mechanism that is connected and moved in the extension direction of the drive mechanism to remove dust collected by the air filter,
A pair of position detecting members disposed on both sides of the dust removing mechanism along the moving direction and having a plurality of protrusions are parallel to a direction perpendicular to the traveling direction of the dust removing mechanism. There is a start position to start moving,
An on signal indicating that the protrusion of the position detection member has been detected is output by the position detection means,
When the ON signal is not obtained for a predetermined period by the detection timer that measures the ON signal reception interval, the positions of both ends of the dust removal mechanism are adjusted to move the dust removal mechanism to at least one start position. Before, during or after the movement, the longitudinal direction of the dust removal mechanism is arranged in parallel with the start position, the traveling direction of the dust removal mechanism, the driving state of the motor that moves the dust removal mechanism, and A control method of an air filter automatic cleaning mechanism that changes a recovery control pattern for moving the dust removal mechanism to the start position in accordance with a combination of state information of the dust removal mechanism including a motor stop state . A pair of drive mechanisms arranged in parallel and opposite on both sides of an air filter that collects dust, and arranged in a direction orthogonal to the pair of drive mechanisms, both ends of which are connected to the pair of drive mechanisms A control program for an air filter automatic cleaning mechanism comprising a dust removal mechanism that is coupled and moved in the extension direction of the drive mechanism to remove dust collected by the air filter,
A pair of position detecting members disposed on both sides of the dust removing mechanism along the moving direction and having a plurality of protrusions are parallel to a direction perpendicular to the traveling direction of the dust removing mechanism. There is a start position to start moving,
A process of outputting an on signal indicating that the protrusion of the position detection member has been detected by the position detection means;
When the ON signal is not obtained for a predetermined period by the detection timer that measures the ON signal reception interval, the positions of both ends of the dust removal mechanism are adjusted to move the dust removal mechanism to at least one start position. And a process of arranging the longitudinal direction of the dust removing mechanism in parallel with the start position before, during or after the movement ;
The dust removal mechanism is moved to the start position in accordance with a combination of the direction information of the dust removal mechanism, the driving state of the motor that moves the dust removal mechanism, and the state information of the dust removal mechanism including the stop state of the motor. A control program for an automatic air filter cleaning mechanism for causing a computer to execute a process of changing a recovery control pattern to be moved .

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