JP5129357B2 - Air conditioner - Google Patents

Description

  The present invention relates to a filter cleaning device including an auxiliary roller that holds a movable filter attached to a suction port, and an air conditioner including the filter cleaning device.

  A filter is attached to the suction port of the indoor unit of the air conditioner, and dust is removed from the air sucked by the filter. Recently, there is an air conditioner equipped with a filter cleaning device that cleans the filter while moving the filter. The filter cleaning device rotates the rotary brush while moving the filter so as to scrape off dust on the filter surface. The rotating brush is built in the dust box, and dust separated by the rotating brush is collected in the dust box. The dust box is detachable from the frame of the indoor unit.

  The rotating brush uses its rotational force to scrape dust on the filter. To prevent the filter from escaping when the rotating brush comes into contact with the filter, the rotating brush assists the position facing the rotating brush with the filter in between. A roller is provided. By pressing the filter with the auxiliary roller, it is possible to reduce the deflection of the filter, ensure the contact between the filter and the rotating brush, and perform cleaning with the rotating brush. For this reason, a driving mechanism for driving the guide roller is required in addition to the filter driving means for moving the filter.

  As such an auxiliary roller driving mechanism, for example, the air conditioner described in Patent Document 1 adopts a configuration in which the rotation of the filter drive motor is transmitted from the drive gear to the driven gear and the driven shaft serving as the guide roller rotates. As the driven shaft rotates, the pinion gear connected to the driven shaft rotates, so that the filter having a rack that meshes with the pinion gear slides (see FIG. 8, Patent Document 1). (See paragraphs 0051-0052)

  In addition, a rib is provided at a predetermined position of the driven shaft over the circumferential direction, and this rib presses the curved portion of the filter against a rotating brush described later when the filter is folded back in a U shape. The filter and the rotating brush can be reliably brought into contact with each other (see paragraph 0055 of Patent Document 1).

JP 2010-286142 A

  By the way, in the case of Patent Document 1, the rotation of the driven shaft (auxiliary roller) around the axis is performed by a filter drive motor to synchronize the movement of the filter and the drive of the auxiliary roller and reduce the number of parts. In addition, a pinion gear is provided coaxially with the driven shaft. Further, in order to bring the driven shaft into contact with the filter and to make the peripheral speed of the outer peripheral surface of the driven shaft coincide with the peripheral speed of the pinion gear, the driven shaft is enlarged to substantially the same diameter as the pinion gear. If the diameter of the driven shaft is large as described above, the load on the filter drive motor is large, and the cost of the material is high.

  In view of the above, an object of the present invention is to provide a filter cleaning device that has good cleanability of the auxiliary roller and has a small load on the drive mechanism by the auxiliary roller, and an air conditioner including the filter cleaning device.

The present invention includes a cleaning unit that cleans the filter, and a moving unit that moves the filter along the guide path with respect to the cleaning unit, the cleaning unit facing the cleaning member that removes dust from the filter, and the cleaning member An auxiliary member that is rotatably provided at a position where the filter is sandwiched between the cleaning member and an auxiliary member drive mechanism that rotates the auxiliary member . As the auxiliary member driving mechanism, an auxiliary member driving rack is provided in the filter, the auxiliary member has teeth that mesh with the rack, and the teeth mesh with the rack of the moving filter to use the moving force of the filter. and said auxiliary member is you characterized in that it is rotatable.

  The rotation of the auxiliary member utilizes the moving force of the filter by bringing the auxiliary member into contact with the moving filter, not the direct driving force from the moving unit. Therefore, the auxiliary member can be provided independently from the moving part. Thereby, since it becomes unnecessary to consider cooperation with the moving part related to driving force transmission, the auxiliary member can be downsized and the degree of freedom of arrangement of the auxiliary member can be obtained. For example, when the moving unit has a filter drive gear that moves the filter by meshing with a rack formed on the filter, it is not necessary to arrange the auxiliary member on the same axis as the rotation axis of the filter drive gear. It can be shifted to a position closer to the filter than the rotational axis of the drive gear. If it does so, an auxiliary member can be made into a member smaller than a filter drive gear for the part which moved the auxiliary member to the cleaning member side. Here, the auxiliary members are rollers and belts. In particular, when the auxiliary member is an auxiliary roller, the diameter of the auxiliary roller can be set smaller than that of the filter drive gear.

  Thus, according to the auxiliary member drive mechanism of the present invention, even if there is a difference in peripheral speed between the filter drive gear and the auxiliary member, the auxiliary member can be installed without providing another speed reduction mechanism between them. Can be rotated. Further, if the auxiliary member becomes small, a space is created in a device such as an air conditioner, so that the dust adhering to the surface of the auxiliary member can be easily cleaned, and the cleaning performance for the auxiliary member is improved. Furthermore, the cost of electricity can be reduced by reducing the number of power sources such as motors, and the material cost can be reduced.

  When the auxiliary member is an auxiliary roller, the auxiliary member driving mechanism includes an auxiliary roller driving rack provided on the filter and a roller gear provided on the auxiliary roller, and meshes the auxiliary roller driving rack and the roller gear. Accordingly, a configuration in which the moving force of the filter is transmitted to the auxiliary roller and the auxiliary roller is rotated may be employed. However, the present invention is not limited to this, and the auxiliary member may be rotated by friction between the filter and the auxiliary member.

  Further, examples of the cleaning member include, but are not limited to, a brush such as a rotating brush and a non-rotating brush, and a suction device.

  The guide path may be linear or curved, and may be endless or non-endless. The guide path may be configured to move the filter within the cabinet, or may be configured to move so as to protrude out of the cabinet. The curved movement path may be formed in a U-shape with a gentle curvature along the inner periphery of the cabinet, or may be formed along the inner surface side of the suction port, and a part of it may be a hairpin. Alternatively, it may be formed into a U-shape with a tight curvature that is U-turned and folded back. When the guide path is formed in a U-shape, if the filter drive gear and the auxiliary member are provided inside the guide path, the auxiliary roller is shifted closer to the cleaning member than the rotation shaft of the filter drive gear. The diameter of the auxiliary roller can be reduced by that amount.

  According to the present invention, since the auxiliary member is rotated using the moving force of the filter, the auxiliary member can be provided independently of the moving part of the filter, and the auxiliary member can be downsized.

The perspective view of the indoor unit of the air conditioner of this invention Sectional drawing which shows outline of indoor unit Perspective view of unit frame of filter cleaning device Six views of the filter Perspective view of the unit frame with the dust box removed Sectional view of the main part of a unit frame fitted with a dust box The figure which shows the dust box when attaching and detaching the rotating brush

  The indoor unit of the air conditioner of this embodiment is shown in FIGS. The indoor unit includes an inverted V-shaped heat exchanger 1 and an indoor fan 2, which are housed in a cabinet 3. A curved surface is formed from the front surface to the bottom surface of the cabinet 3. A suction port 4 is formed on the upper surface of the cabinet 3, and an outlet 5 is formed on the curved surface.

  An air passage 6 extending from the suction port 4 to the blowout port 5 is formed inside the cabinet 3, and the heat exchanger 1 and the indoor fan 2 are disposed in the air passage 6. A filter 7 is disposed between the suction port 4 and the heat exchanger 1, and dust is removed from indoor air sucked from the suction port 4. There are two filters 7 on the left and right. The indoor unit is provided with a filter cleaning device that cleans the filter 7 while moving the filter 7.

  A panel 10 that opens and closes the air outlet 5 is provided on the curved surface of the cabinet 3. The panel 10 is supported by the cabinet 3 so as to be openable and closable, and an opening and closing part for opening and closing the panel 10 is provided.

  The panel 10 opens when the air conditioner is in operation. During the cooling operation, the panel 10 guides the cool air obliquely upward, and the cool air blows out along the ceiling. At the time of heating operation, the panel 10 presses the warm air blown forward and guides the warm air toward the floor surface. Even in the initial stage of the cooling operation, the cool air is blown out toward the floor surface, and rapid cooling is performed. The panel 10 is in a closed posture when the operation is stopped, covers the air outlet 5, and is integrated with the cabinet 3.

  In the cabinet 3, a drain pan 11 is provided below the heat exchanger 1 and receives dew flowing down through the heat exchanger 1. The drain pan 11 is integrally formed with the drain pan unit 12 that forms the air outlet 5. An ion generating unit 13 that generates ions is attached to the drain pan unit 12.

  In the air conditioner, an outdoor unit (not shown) is installed outside the indoor unit. The outdoor unit includes a compressor, a heat exchanger, a four-way valve, an outdoor fan, and the like, and these and the indoor heat exchanger 1 form a refrigeration cycle. And the control apparatus which controls a refrigerating cycle is provided in an indoor unit. A control device including a microcomputer controls the refrigeration cycle based on a user instruction and detection signals of various sensors such as a temperature sensor that detects a room temperature and an outside temperature, and performs an air conditioning operation. At this time, the control device controls the opening / closing unit according to the cooling / heating operation to open / close the panel 10. Further, the control device controls the filter cleaning device periodically or in accordance with an instruction from the user to clean the filter 7 while moving it.

  The filter cleaning apparatus includes a moving unit 15 that moves the filter 7, a cleaning unit 16 that cleans the filter 7, and a dust box 17 that accommodates dust removed from the filter 7, which are shown in FIGS. As shown, the unit frame 18 is provided integrally. The filter 7 is held by the unit frame 18, and the filter 7 is guided by the unit frame 18 when the filter 7 moves. The unit frame 18 constitutes a filter holding device that holds a detachable filter in a movable manner. That is, the filter cleaning device has a filter holding device. The cleaning unit 16 includes a cleaning member that removes dust from the filter 7, an auxiliary member that is rotatably provided at a position facing the cleaning member, and that sandwiches the filter between the cleaning member, and an auxiliary member drive mechanism that rotates the auxiliary member With. The auxiliary member driving mechanism rotates the auxiliary member using the moving force of the filter 7 by bringing the auxiliary member and the filter 7 into contact with each other.

  The unit frame 18 is attached to the cabinet 3 so as to cover from the front surface to the upper surface of the heat exchanger 1, and is detachable from the cabinet 3. A front panel 19 that can be freely opened and closed is provided in front of the unit frame 18. The front panel 19 is detachably attached to the cabinet 3. The front panel 19 opens and closes around the upper axis of the cabinet 3, and when the front panel 19 is opened, the dust box 17 appears. The dust box 17 is detachably attached to the unit frame 18. When the dust box 17 is removed, a part of the guide path 35 is opened, and an insertion port (not shown) for taking the filter 7 in and out of the cabinet appears. The user can attach and detach the filter 7 through this insertion port.

  As illustrated in FIG. 4, the filter 7 includes a mesh portion 20 and a frame body 21 that surrounds the mesh portion 20. And the mesh part 20 and the frame 21 are integrally shape | molded by synthetic resins, such as a polypropylene resin, and the frame 21 is made into the back-and-front symmetrical and left-right symmetric shape. The shape of the mesh part 20 is also symmetric in the front-rear direction and in the left-right direction. Therefore, the front-rear and left-right symmetric filter 7 can be mounted on the cabinet 3 from either front or rear direction.

  The frame body 21 is formed in a rectangular frame shape from a vertical frame 21a positioned on the left and right and a horizontal frame 21b positioned on the front and rear. On the back surface of the mesh part 20, vertical ribs 22a and horizontal ribs 22b are formed at equal intervals for reinforcement. The surface of the mesh part 20 is flush.

  A rack 24 is formed in the vertical frame 21a to mesh with the filter drive gear 40 that is driven to rotate by the moving unit 15. The rack 24 is formed to be convex on the back side of the filter 7 and concave on the front side. The rack 24 is formed from the front end to the rear end of the vertical frame 21a. The rack 24 meshes with the filter drive gear 40 regardless of whether the filter 7 is attached to the unit frame 18 from either the front or rear direction. The height of the convex portion of the rack 24 is higher than that of the vertical rib 22a and is equal to or higher than the height of the horizontal rib 22b. The vertical frame 21a and the vertical rib 22a are thinner than the horizontal frame 21b and the horizontal rib 22b. Thereby, the filter 7 has flexibility in the vertical direction while maintaining the rigidity in the horizontal direction, and the filter 7 can be bent in the vertical direction.

  In addition, an auxiliary roller driving rack 26 that forms part of the auxiliary member driving mechanism and meshes with the roller gear 44 of the auxiliary roller 42 that is an auxiliary member is formed in the central vertical rib 22a. The auxiliary roller driving rack 26 is formed so as to be convex on the back surface side of the filter 7 and concave on the front surface side, similarly to the rack 24 formed on the vertical frame 21a. The auxiliary roller driving rack 26 is formed from the front end to the rear end of the vertical rib 22 a, and the auxiliary roller driving rack 26 meshes with the roller gear 44 regardless of whether the filter 7 is attached to the unit frame 18 from either the front or rear direction. It is like that. The height of the convex portion of the auxiliary roller driving rack 26 is equal to or higher than the height of the lateral rib 22b. The pitch of the auxiliary roller driving rack 26 may be different from that of the rack 24 of the vertical frame 21a. However, it is preferable that the auxiliary roller driving rack 26 is formed at the same pitch from the viewpoint of ease of manufacturing the filter 7. As long as the auxiliary roller driving rack 26 and the roller gear 44 correspond to each other, the position of the auxiliary roller driving rack 26 may not be the center of the filter 7. For example, a plurality of racks 26 may be provided for each vertical rib 22a, and a plurality of roller gears 44 may be provided so as to face the racks 26. It is preferable to provide the rack 26 in the center of the filter 7 because the filter 7 is less inclined and the moving force of the filter 7 can be efficiently transmitted to the auxiliary roller 42.

  The four corners of the square filter 7 are cut obliquely to form an inclined surface 25. The inclined surface 25 is formed by being cut long in the vertical direction and short in the horizontal direction. The inclined surface 25 at each corner has the same shape.

  As shown in FIG. 5, the unit frame 18 is formed of a base plate 30 that holds the filter 7 and left and right side frames 31. The base plate 30 is curved from the upper surface to the front surface and has a flat lower surface. Side frames 31 are erected integrally at both left and right ends of the base plate 30. The curved portion of the base plate 30 is open, and a center frame 32 is provided at the center of the base plate 30 in the left-right direction (longitudinal direction of the indoor unit), and the opening is divided into two. A lattice portion 34 is formed by vertical and horizontal bars 33 in the opening. The lattice part 34 is in a position facing the heat exchanger 1, and the air that has passed through the filter 7 passes through the lattice part 34 toward the heat exchanger 1.

  A guide path 35 for guiding the moving filter 7 is formed in the unit frame 18. More specifically, the guide path 35 is formed in a space from the front surface to the upper surface of the unit frame 18, and the cabinet 3 is formed from a substantially triangular space formed in the upper front portion of the inverted V-shaped heat exchanger 1. It is formed to make a U-turn in a hairpin shape over a space along the inner surface of the suction port 4. During cleaning, the filter 7 moves downward from the mounting position mounted between the suction port 4 and the heat exchanger 1, makes a U-turn on the U-turn part 35 a, and moves along the lattice part 34. It reaches between the suction port 4 and the heat exchanger 1. Σ-shaped guide grooves 36 are formed in the left and right side frames 31 and the center frame 32 of the unit frame 18 when viewed from the side, and the vertical frame 21a of the filter 7 is slidably fitted into the guide grooves 36. The filter 7 moves so as to make a U-turn in the guide path 35 by the guide groove 36 and the lattice portion 34 of the base plate 30.

  The moving unit 15 includes a filter drive gear 40 that meshes with the rack 24 of the filter 7 and a stepping motor 41 that rotationally drives the filter drive gear 40. The filter drive gear 40 moves the filter 7 along the guide path 35 with respect to the cleaning unit 16.

  A stepping motor 41 is attached to the outer surface side of the side frame 31 of the unit frame 18, and the filter drive gear 40 is rotatably supported on the inner surface side of the side frame 31. Two filter drive gears 40 are also rotatably supported by the center frame 32 corresponding to the left and right filters 7. The filter drive gear 40 is disposed inside the U-turn portion 35 a of the guide path 35. The radius of the tip circle of the filter drive gear 40 is substantially the same as the radius of curvature of the U-turn portion 35a. A rotational driving force is transmitted to the filter driving gear 40 via a gear attached to the motor shaft of the stepping motor 41. The left and right filter drive gears 40 are connected by a rotation shaft 43. The moving unit 15 is provided in a pair of left and right corresponding to the left and right filters 7. The two stepping motors 41 are driven in synchronization.

  The cleaning unit 16 is provided inside the rotary brush 50 as a cleaning member that contacts the filter 7 and scrapes off dust, the cleaning motor 51 that rotationally drives the rotary brush 50, and the U-turn unit 35 a of the guide path 35. And an auxiliary roller 42 that is an auxiliary member for assisting the movement of the filter 7. The rotating brush 50 is detachably provided on the dust box 17, and the rotating brush 50 is integrated with the dust box 17.

  The auxiliary rollers 42 are provided for the left and right filters 7, respectively. The auxiliary roller 42 is formed by arranging a pair of rollers on both sides in the left-right direction across the vertical rib 22a at the center of the filter 7. The auxiliary roller 42 is formed in a columnar shape and is integrally attached to a support shaft arranged in the left-right direction. Both left and right ends of the support shaft are rotatably supported by recesses 49 formed in the side frame 31 and the center frame 32 of the unit frame 18. The recess 49 is provided on the inner side in the left-right direction with respect to the left and right filter drive gears 40, and the auxiliary roller 42 is provided on the inner side of the left and right filter drive gears 40. The auxiliary roller 42 is only bearings and does not receive a direct driving force from the filter driving gear 40. The material of the auxiliary roller 42 is made of resin, but may be rubber, or may be one in which a rubber is wound around a resin core, or a surface having irregularities such as ribs.

  A roller gear 44 that rotates the auxiliary roller 42 is provided as an auxiliary member driving mechanism. The roller gear 44 is fixed to the support shaft of the auxiliary roller 42 at the center in the left-right direction (axial direction) of the auxiliary roller 42. The roller gear 44 is disposed at a position facing the auxiliary roller driving rack 26 of the filter 7. The tooth pitch of the roller gear 44 is set so as to mesh with the auxiliary roller driving rack 26 of the filter 7. With such a configuration, the auxiliary roller 42 can be rotated by using the moving force of the filter 7 that moves along the guide path 35 by the rotation of the filter drive gear 40. In addition, the auxiliary roller 42 is shifted to a position closer to the rotary brush 50 than the rotary shaft 43 of the filter drive gear 40 until the roller gear 44 meshes with the auxiliary roller driving rack 26. The auxiliary roller 42 can be reduced in size by the amount of shifting the auxiliary roller 42. That is, the radius of the auxiliary roller 42 can be made smaller than the radius of curvature of the U-turn portion 35 a of the guide path 35 and the radius of the filter drive gear 40. The diameter of the auxiliary roller 42 is preferably smaller than the radius of the filter drive gear 40. Thereby, the auxiliary roller 42 can be arrange | positioned between the rotating shaft 43 of the filter drive gear 40, and the filter 7, and the vacant space inside the U-turn part 35a can be utilized effectively.

  The auxiliary member driving mechanism includes the above-described auxiliary roller driving rack 26 provided on the filter 7 and the above-described roller gear 44 provided on the auxiliary roller 42. By engaging the auxiliary roller driving rack 26 and the roller gear 44, the moving force of the filter 7 can be transmitted to the auxiliary roller 42 via the roller gear 44 and the support shaft, and the auxiliary roller 42 can be rotated. The moving direction of the filter 7 and the rotating direction of the auxiliary roller 42 are the same. That is, when the filter 7 moves from the front side to the rear side, the auxiliary roller 42 also rotates from the front side to the rear side. When the filter 7 moves from the rear side to the front side, the auxiliary roller 42 also moves from the rear side to the front side. Rotate. Therefore, the auxiliary roller 42 does not hinder the movement of the filter 7.

  As shown in FIG. 3, the dust box 17 is attached to the lower surface of the base plate 30. The dust box 17 is provided for each of the left and right filters 7. As shown in FIGS. 6 and 7, the dust box 17 includes a dust collection box 45 for collecting dust removed from the filter 7, a filter guide 46 for pressing the filter 7 that moves while curving, and a guide rib 47 for guiding the movement of the filter 7. I have.

  The dust collection box 45 is disposed below the auxiliary roller 42. The dust collection box 45 is formed in a box shape having an open upper surface, and an opening through which dust enters and exits is formed on the upper surface. This opening faces the filter 7 through which it passes.

  The filter guide 46 is detachably fixed to the dust collection box 45 by inserting the lower part of the filter guide 46 into the upper part of the front side of the dust collection box 45. The filter guide 46 is positioned in front of the auxiliary roller 42 and covers the front surface of the filter 7 that moves along the front surface of the unit frame 18.

  An auxiliary guide rib 48 is formed on the rear surface of the filter guide 46 facing the filter 7. The auxiliary guide rib 48 is located at the front side portion of the U-turn portion 35a of the guide path 35 and is formed to be curved along the outer peripheral surface of the auxiliary roller 42 in the vertical direction. A plurality of auxiliary guide ribs 48 are arranged at intervals in the left-right direction.

  The guide rib 47 is provided in the dust collection box 45 so as to be openable and closable by fitting a projecting shaft 57 into a shaft hole 58 formed in the upper part on the rear side of the dust collection box 45. The guide rib 47 is located in the lower part of the U-turn portion 35a of the guide path 35 and is formed in the front-rear direction. A plurality of guide ribs 47 are arranged at intervals in the left-right direction. The guide ribs 47 on both sides in the left-right direction are opposed to the filter drive gear 40, and a plurality of, in this case, three guide ribs 47 are opposed to the auxiliary roller 42, and each guide rib 47 is closed with respect to the dust collection box 45. The upper surface of the guide rib 47 is formed to be concavely curved.

  When the guide rib 47 is in a closed state, the center guide rib 47 is positioned so as to straddle the opening of the dust collection box 45, and the left and right guide ribs 47 are opposed to the side walls 45a on both sides in the left and right direction of the dust collection box 45, Each guide rib 47 guides the moving filter 7. When the guide rib 47 is open, the opening is opened.

  Further, as shown in FIG. 6, auxiliary guide ribs 66 are also provided in the unit frame 18. Auxiliary guide ribs 66 are formed on the lower surface of the base plate 30 in the front-rear direction, and a plurality of auxiliary guide ribs 66 are arranged in the left-right direction. The auxiliary guide rib 66 is located at the rear portion of the U-turn portion 35 a of the guide path 35.

  As described above, the front auxiliary guide rib 48, the guide rib 47, and the rear auxiliary guide rib 66 form a part of the guide path 35. The front and rear auxiliary guide ribs 48 and 66 and the guide rib 47 guide the filter 7 that moves while being curved in the U-turn portion 35 a of the guide path 35 so that it does not come off the guide path 35. Therefore, the filter 7 that moves in a curved manner can be stably guided over a long section by the dust box 17 having a series of guide ribs. In the U-turn part 35 a of the guide path 35, the filter 7 passes through the rotating brush 50 smoothly.

  Here, the guide rib 47 and the auxiliary guide ribs 48 and 66 are provided so as to correspond to the positions of the vertical frame 21 a or the vertical rib 22 a of the filter 7 that moves in the guide path 35. The left and right guide ribs 47 and auxiliary guide ribs 48 and 66 face the vertical frame 21a, and the central guide rib 47 and auxiliary guide ribs 48 and 66 face the vertical rib 22a. Thereby, the guide rib 47 and the auxiliary guide ribs 48 and 66 are in contact with the vertical frame 21 a or the vertical rib 22 a of the filter 7 and are not in contact with the mesh portion 20. The ribs 47 and 48 do not interfere with the cleaning of the filter 7 by the rotating brush 50.

  The rotating brush 50 is disposed at the opening of the dust collection box 45 and faces the lower side of the auxiliary roller 42. The rotating brush 50 has a plurality of rows of brush bristles 71 mounted on the outer periphery of the support shaft 70. The nylon bristle 71 stands upright on the outer periphery of the support shaft 70. Each row of the brush bristles 71 is linear, and is arranged in parallel in the axial direction (left-right direction). Note that the brush bristles 71 may be spirally mounted along the left-right direction, and each row of brush bristles 71 is parallel.

  Hubs 72 are attached to both sides of the support shaft 70 of the rotating brush 50, and the hub 72 supports the support shaft 70. A U-shaped bearing 73 is formed on the left and right side walls 45 a of the dust collection box 45, and the hub 72 is placed on the bearing 73. Abutting portions 74 that are recessed in an arc shape are formed on the lower surfaces of the left and right guide ribs 47. When the guide ribs 47 are in a closed state, the abutting portions 74 press the hub 72 from above. Therefore, when the spindle 70 of the rotating brush 50 is sandwiched between the dust collection box 45 and the guide rib 47, the rotating brush 50 is rotatably supported by the dust box 17. Thus, the support structure of the rotating brush 50 becomes a simple structure, and the rotating brush 50 can be easily attached and detached. When the guide rib 47 is opened, the rotating brush 50 can be taken out from the dust collection box 45. Since the rotating brush 50 can be easily removed, the rotating brush 50 can be cleaned immediately and a clean rotating brush 50 can be used.

  As shown in FIG. 7, support ribs 75 for supporting the rotating brush 50 are provided in the opening of the dust collection box 45. The support rib 75 is formed so as to straddle the opening in the front-rear direction, and is curved downward. A plurality of support ribs 75 are arranged in the left-right direction. When the guide ribs 47 are closed, the support ribs 75 are located below the central guide rib 47 and face the guide ribs 47. The support rib 75 and the guide rib 47 are in contact with the brush bristles 71 of the rotating brush 50. The rotating brush 50 is rotatably sandwiched between the support rib 75 and the guide rib 47. The tip of the bristle 71 protrudes above the guide rib 47. Therefore, the rotating brush 50 is in contact with the filter 7 without being obstructed by the guide rib 47 and can always remove dust from the filter 7.

  Even if a load is applied to the rotating brush 50 from the filter 7 by the support rib 75, the rotating brush 50 can be supported from the lower side, the bending of the rotating brush 50 is prevented, and the rotating brush 50 is separated from the filter 7. Can be prevented. The rotating brush 50 reliably contacts the filter 7 and can clean the filter 7 satisfactorily. The support rib 75 has a function of reinforcing the dust collection box 45. Even when the dust box 17 is attached and detached, even if a load is applied to the dust box 45 from the front and rear, the support rib 75 prevents the dust box 45 from being deformed in the front and rear direction, and the dust box 17 can be used repeatedly.

  The left and right rotating brushes 50 are driven by one cleaning motor 51. In order to rotate the plurality of rotating brushes 50, a rotating body is provided at both the left and right ends of the rotating brush 50, and an intermediate transmission body for transmitting a rotational force between the left and right rotating brushes 50 is provided. The intermediate transmission body is connected to the respective rotary bodies of the left and right rotary brushes 50. Specifically, the support shaft 70 of the rotating brush 50 protrudes outward from the left and right sides of the dust collection box 45, and gears 76 that are rotating bodies are provided at both ends of the support shaft 70. The gear 76 is formed integrally with the hub 72, but may be detachably attached to the support shaft 70.

  As shown in FIG. 3, a cleaning motor 51 is attached to the outside of the side frame 31 of the unit frame 18, and a drive gear (not shown) attached to the motor shaft of the cleaning motor 51 is a support shaft 70 of the rotary brush 50. Mesh with the gear 76. The center frame 32 is provided with an intermediate gear as an intermediate transmission body, and the intermediate gear meshes with the two gears 76 on the center frame side of the left and right dust boxes 17. The gears 76 of the left and right rotating brushes 50 are connected by the intermediate gear. The cleaning motor 51 is installed on one side where an electrical box (not shown) in the left-right direction which is the longitudinal direction of the cabinet 3 is arranged. That is, the control board is housed, and the electrical box that drives each motor and the cleaning motor 51 are installed on the same side in the left-right direction. In the present embodiment, the cleaning motor 51 and the electrical box are arranged on the right side when viewed from the front. Thus, by arrange | positioning on the same side, the wiring pulled out from an electrical equipment box and connected to a cleaning motor can be shortened.

  When the cleaning motor 51 is driven, the rotational force is transmitted from the drive gear 77 to the gear 76 of the one-side rotating brush 50, and the one-side rotating brush 50 rotates. This rotational force is transmitted from the gear 76 of the rotating brush 50 on one side to the gear 76 of the rotating brush 50 on the other side via an intermediate gear. The rotating brush 50 on the other side rotates. As a result, the rotating brushes 50 on both sides rotate in conjunction with each other.

  Thus, the drive mechanism includes the cleaning motor 51, the support shaft 70 of the rotating brush 50, the gear 76 that is a rotating body, and the intermediate gear that is an intermediate transmitting body. In the structure in which the support shaft 70 of the rotary brush 50 is incorporated as one component of the drive mechanism, the dust box 17 is divided into a plurality of parts, and the cleaning motor 51 is arranged on one side in the left-right direction of the indoor unit. It can be simplified. Further, by using a plurality of dust boxes 17, it is possible to easily attach the cabinet 3 to the cabinet 3 as compared with one dust box that is long in the left-right direction.

  Since the gears 76 are provided on both the left and right sides of the dust box 17, the dust box 17 is symmetrical. The left and right gears 76 mesh with the drive gear 77 and the intermediate gear. Therefore, the dust box 17 can be mounted on the unit frame 18 without distinction between the left filter cleaning and the right filter cleaning. The user does not need to discriminate between the left filter cleaning dust box 17 and the right filter cleaning dust box 17, and can easily perform the mounting operation of the dust box 17. Further, only the intermediate gear is provided in the unit frame 18 in order to transmit the rotational force to the adjacent rotary brushes 50. The number of members for transmitting the rotational force is reduced, so that the space can be reduced, the cabinet 3 can be reduced in size, and the intermediate gear is installed at a position unrelated to the attachment / detachment of the dust box 17. Don't be.

  The dust box 17 is detachably attached to the unit frame 18. When the dust box 17 is removed, a part of the guide path 35 is opened, and an insertion port for taking the filter 7 in and out of the cabinet appears. The user can attach and detach the filter 7 through this insertion port.

  When the filter 7 is mounted, the guide groove 36 of the side frame 31 is visible from the outside at the insertion port. The user inserts the vertical frame 21 a of the filter 7 into the guide groove 36 of the side frame 31. When the filter 7 is inserted to the rear side of the guide path 35, the front side of the filter 7 is raised from the filter drive gear 40. Thereafter, the user attaches the dust box 17. When the dust box 17 is fixed to the unit frame 18, the front side of the filter 7 is pressed by the filter guide 46 of the dust box 17. At this time, the rack 24 of the vertical frame 21 a meshes with the filter drive gear 40. The filter 7 is mounted at the mounting position.

  Here, a limit switch 94 is provided on the unit frame 18 in order to detect the attachment of the filter 7. As shown in FIGS. 2 and 3, the limit switch 94 is disposed in the vicinity of the rear end of the guide path 35 and is provided for each of the left and right filters 7.

  When the filter 7 is mounted on the cabinet 3, the filter 7 moves along the guide path 35 toward the rear side. When the filter 7 reaches the mounting position, the limit switch 94 detects the filter 7. The control device detects that the filter 7 is attached by an ON signal from the limit switch 94.

  When the filter cleaning device cleans the filter 7, the control device operates the moving unit 15 and the cleaning unit 16. The stepping motor 41 is driven, and the filter drive gear 40 rotates. Further, the cleaning motor 51 is driven and the rotary brush 50 rotates. The filter 7 in the mounting position starts to move downward along the guide path 35. The filter 7 is curved by being pressed by the filter guide 46 and the guide rib 47, and moves while being guided so as not to be detached from the guide path 35. Since the filter 7 is guided by the plurality of guide ribs 47 and the auxiliary guide ribs 48, the moving filter 7 does not undulate in the front-rear direction or the left-right direction, and the rotating brush 50 reliably and stably contacts the filter 7. .

  At this time, the auxiliary roller 42 rotates around the axis as the filter 7 moves. That is, the auxiliary roller driving rack 26 of the filter 7 and the roller gear 44 of the auxiliary roller 42 mesh with each other, whereby the moving force of the filter 7 is transmitted to the auxiliary roller 42 and the auxiliary roller 42 rotates around the axis. Since the auxiliary roller 42 rotates in accordance with the movement of the filter 7, the frictional force between the filter 7 and the auxiliary roller 42 can be reduced.

  As described above, the rotation of the auxiliary roller 42 uses the moving force of the filter 7 due to contact with the filter 7 instead of the direct power from the filter driving gear 40, and therefore the spindle of the auxiliary roller 42 is driven by the filter. There is no need to be coaxial with the rotating shaft 43 of the gear 40. The support shaft of the auxiliary roller 42 can be shifted from the rotary shaft 43 of the filter drive gear 40 to a position closer to the rotary brush 50 that is a cleaning member. Then, the diameter of the auxiliary roller 42 can be set to be smaller than the radius of the filter drive gear 40 by the amount of movement of the support shaft of the auxiliary roller 42 in the direction approaching the rotary brush 50. By reducing the size of the auxiliary roller 42, the cleaning property of the auxiliary roller 42 is improved. That is, if the auxiliary roller 42 becomes smaller, the space in the cabinet 3 around the auxiliary roller 42 increases, and it becomes easier to perform work when dust accumulated on the surface of the auxiliary roller 42 is cleaned. Therefore, a cleaning member that scrapes off dust adhering to the surface of the auxiliary roller 42 using a space inside the U-turn portion 35a of the guide path 35 may be provided. During cleaning of the filter 7, it is possible to prevent the cleaning member from contacting the auxiliary roller 42, scraping dust adhering to the auxiliary roller 42 from the filter 7, and reattaching dust to the reciprocating filter 7.

  Further, by making the auxiliary roller 42 have a small diameter, it is possible to reduce a load on a power source such as a motor in a drive mechanism for moving the filter 7. That is, the weight of the auxiliary roller 42 can be reduced, and the load on the filter drive gear 40 and the stepping motor 41 can be reduced. Electricity costs during use can be saved and material costs can be reduced. Moreover, since the contact area with the filter 7 becomes small, the frictional force between the filter 7 can be reduced, and the load on the stepping motor 41 can be further reduced.

  When the filter 7 makes a U-turn, the rotating brush 50 hits the filter 7 and dust is scraped off. When dust is scraped off by the rotating brush 50, the filter 7 is supported from the inside by the auxiliary roller 42, so that the filter 7 can be prevented from escaping (do not bend) to the inside of the guide path 35. The auxiliary roller 42 can prevent dust clogged in the filter 7 from being scattered inside the guide path 35 and improve the cleanability of the filter 7. The dust thus scraped off is collected in the dust collection box 45. When dust is removed, the dust is scattered, but the filter guide 46 is present on the front side of the rotating brush 50, so the scattered dust is blocked by the filter guide 46, so that the dust does not leak out of the dust box 17.

  When the filter 7 reaches the end point, the rear end of the filter 7 reaches the rotating brush 50. The front end of the filter 7 does not reach the limit switch 94. At this time, the rotation of the stepping motor 41 is stopped.

  Here, the timing at which the stepping motor 41 stops is such that when the filter 7 is moved from the mounting position, the limit switch 94 is turned off. The control device counts the number of pulses of the stepping motor 41 based on the off signal of the limit switch 94. When the preset count number is reached, the control device stops the stepping motor 41. This count number is set corresponding to the distance from the mounting position until the rear end of the filter 7 reaches the rotating brush 50 that is the end point.

  Thereafter, the stepping motor 41 is rotated in the reverse direction, and the filter 7 returns through the guide path 35. Even during the return of the filter 7, the rotary brush 50 is driven and the filter 7 is cleaned. When the front end of the filter 7 passes through the rotary brush 50 and the filter 7 reaches the mounting position, the limit switch 94 detects the filter 7, and the control device detects the stepping motor 41 and the cleaning motor based on the ON signal of the limit switch 94. 51 is stopped.

  The rotating brush 50 rotates to remove dust from the filter 7 and drop the dust into the dust collection box 45. The rotating brush 50 rotates in a direction opposite to the moving direction of the filter 7 when moving from the mounting position. That is, with respect to the moving direction from the front side to the rear side, the rotation direction of the rotary brush 7 is the reverse direction from the rear side to the front side. By setting the rotation direction in this way, the bristle 71 becomes a resistance against the moving filter 7, and the brush bristle 71 comes into strong contact with the filter 7, so that the dust adhering to the filter 7 is entangled. It becomes easy to take. When the filter 7 that has passed once returns to the mounting position, the rotation direction of the rotary brush 50 is the forward direction with respect to the movement direction of the filter 7. The rotating brush 50 does not act as a resistance to the movement of the filter 7 and can smoothly move the filter 7 to the mounting position.

  In addition, this invention is not limited to the said embodiment, Of course, many corrections and changes can be added to the said embodiment within the scope of the present invention. The filter, the filter holding device, and the filter cleaning device having the filter holding device may be used for air purifiers, humidifiers, and dehumidifiers other than air conditioners. The unit frame for holding the filter is attached to the cabinet, but the cabinet itself may be used as a frame to hold the filter movably.

  The filter rack may be provided in the mesh portion instead of the vertical frame. For example, an even number of racks are formed at positions that are symmetrical with respect to the filter, or one rack is formed at a position that passes through the center in the left-right direction. Moreover, you may form the hole into which a filter drive gear enters in a filter instead of a rack. The filter drive gear driven to rotate enters the hole, and the filter moves. In this case, the filter can be not only front-back symmetric and vertical symmetric but also front-back symmetric.

  A belt may be used as the auxiliary member. The belt is hung on a plurality of shafts parallel to the left-right direction, and a gear that meshes with the rack of the filter is provided on the drive shaft closest to the filter. When this gear rotates according to the movement of the filter, the drive shaft rotates, and the belt rotates as the drive shaft rotates. Alternatively, using a toothed belt, the teeth formed on the surface of the belt mesh with the rack of the filter. The moving force of the filter is directly transmitted to the belt, and the belt rotates as the filter moves. Further, the belt may be hung on the drive shaft and the rotation shaft of the filter drive gear.

3 cabinet 4 suction port 7 filter 15 moving part 16 cleaning part 17 dust box 18 unit frame 20 mesh part 21 frame 21a vertical frame 21b horizontal frame 22a vertical rib 22b horizontal rib 24 rack 26 auxiliary roller drive rack 35 guide path 35a U-turn Portion 40 Filter drive gear 41 Stepping motor 42 Auxiliary roller 43 Rotating shaft 44 Roller gear 45 Dust collection box 49 Recess 50 Rotating brush 51 Cleaning motor 70 Support shaft 71 Brush bristles 75 Support rib

Claims (7)

A cleaning unit that cleans the filter, and a moving unit that moves the filter along the guide path with respect to the cleaning unit, the cleaning unit facing the cleaning member that removes dust from the filter, and the cleaning member An auxiliary member that is rotatably provided at a position and sandwiches the filter with the cleaning member; and an auxiliary member drive mechanism that rotates the auxiliary member,
As the auxiliary member driving mechanism , an auxiliary member driving rack is provided in the filter, the auxiliary member has teeth that mesh with the rack, and the teeth mesh with the rack of the moving filter to use the moving force of the filter. The filter cleaning apparatus is characterized in that the auxiliary member is rotatable. The moving unit includes a filter drive gear that moves a filter by meshing with a rack formed in the filter, and the auxiliary member is disposed at a position closer to the filter than a rotation shaft of the filter drive gear. The filter cleaning apparatus according to claim 1. The auxiliary member is an auxiliary roller, the auxiliary roller has a smaller diameter than the filter drive gear, and the axis of the auxiliary roller is located between the rotation shaft of the filter drive gear and the filter. The filter cleaning device according to claim 2. The auxiliary member is an auxiliary roller, and a roller gear is provided on the auxiliary roller as teeth that mesh with the auxiliary member driving rack, and by engaging the rack and the roller gear, the moving force of the filter is increased by the auxiliary roller. The filter cleaning device according to claim 1, wherein the filter cleaning device transmits to a roller and rotates the auxiliary roller. An air conditioner equipped with the filter cleaning device according to claim 1. The air conditioner according to claim 5, wherein the auxiliary member is disposed inside a U-turn portion of the guide path. The air conditioner according to claim 6, wherein the guide path is formed along an inner surface side of a suction port of the cabinet, and a part of the guide path is U-turned and folded back into a hairpin shape. .

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