JP2010048504A - Filter cleaning device for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To smoothly clean an upper face side air filter by surely moving the upper face side air filter to the air filter cleaning part side when reciprocating the upper face side air filter to clean it by the air filter cleaning part. <P>SOLUTION: One edge part of the upper face side air filter 6 located on the air filter cleaning part 8 side, intersecting the moving direction of the upper face side air filter 6 in the air filter cleaning device for an air conditioner, has a projecting part 70 located at the center part in a breadth direction provided with a spur gear 43, and projected to the air filter cleaning part 8 side, and an inclined part 71 inclined in a direction to go away from the air filter cleaning part 8 from the projecting part 70 toward both sides of the breadth direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a filter cleaning device for an air conditioner, and more particularly, to a filter cleaning device for an air conditioner that can improve workability when an upper surface side air filter is reciprocally moved for automatic cleaning.

  In an indoor unit of an air conditioner, indoor air sucked into an indoor unit housing from an air suction port is sucked through an air filter, dust in the air is captured by the air filter, and the air from which the dust has been removed exchanges heat. Led to the vessel. When the amount of dust trapped by the air filter increases with the lapse of the operation time of the air conditioner, the flow of room air toward the heat exchanger is hindered, and the heat exchange efficiency is lowered.

  For this reason, it is necessary to periodically remove the air filter and remove dust adhering to the air filter. However, since a general indoor unit is attached to a high place on the wall surface of a room, it is difficult for some users to attach and detach the air filter. Therefore, as described in Patent Document 1 below, an air conditioner indoor unit having a function of automatically cleaning an air filter is known.

  According to the indoor unit of this air conditioner, the heat exchanger, the blower fan, the air filter, and the filter cleaning unit are installed in the indoor unit housing, and the air filter is provided so as to be able to reciprocate through the filter cleaning unit. It has been. When cleaning the air filter, the air filter is reciprocated by passing through the filter cleaning section, and dust attached to the air filter is removed from the air filter during the reciprocating process.

The air filter is divided into an upper surface side air filter that covers the air suction port formed on the upper surface of the indoor unit housing and a front side air filter that covers the air suction port formed on the upper front surface of the indoor unit housing. Has been. A spur gear is provided at the center in the widthwise direction of the upper surface side air filter and the front surface side air filter, and a drive gear that meshes with the spur gear is provided in the air filter cleaning unit.
JP 2007-205616 A

  However, in the indoor unit of an air conditioner described in Patent Document 1, no consideration is given to the following points.

  One edge portion of the upper surface side air filter that is located on the filter cleaning portion side crossing the moving direction of the upper surface side air filter is formed in a straight line. For this reason, when the upper surface side air filter is tilted for some reason, when the upper surface side air filter is moved to the filter cleaning unit side for cleaning, the upper surface side air filter may collide with the filter cleaning unit and be moved. It may not be possible.

  The present invention has been made to solve such a problem. The object of the present invention is to reciprocate the upper surface side air filter and clean it by the air filter cleaning unit. It is an object to provide a filter cleaning device for an air conditioner that can be reliably moved to the side and can smoothly clean the upper surface side air filter.

  A feature of the embodiment of the present invention is that an air inlet is formed on the upper surface and the front surface, an air outlet is formed in the lower part, and the air is in the ventilation path that connects the air inlet and the air outlet. A filter, a heat exchanger, and an indoor fan, wherein the air filter includes an upper air filter that covers the air inlet on the upper surface and a front air that covers the air inlet on the front surface. And is disposed horizontally between the upper surface side air filter and the front surface side air filter, and the upper surface side air filter and the front surface side air filter are directed to the front surface side and the upper surface side, respectively. And an air filter cleaning section that removes dust adhering to the upper surface side air filter and the front surface side air filter, and the air filter cleaning section includes the upper surface side air filter and the front surface side. A filter cleaning device for an air conditioner having a drive gear that meshes with a spur gear provided in the center in the widthwise direction of the air filter, and is located on the air filter cleaning portion side so as to intersect the moving direction of the upper surface side air filter. An overhanging portion that is located at one edge portion of the upper surface side air filter and that is located at the center in the widthwise direction where the spur gear is provided and overhangs toward the air filter cleaning portion, and from the overhanging portion to the widthwise direction And an inclined part inclined in a direction away from the air filter cleaning part toward both sides of the air filter.

  According to the present invention, when the upper surface side air filter is moved toward the air filter cleaning unit in order to clean the upper surface side air filter, the upper surface side air filter collides with the air filter cleaning unit even if the upper surface side air filter is inclined. Without being hindered, the upper surface side air filter can be reliably moved to the air filter cleaning portion side, and the upper surface side air filter can be smoothly cleaned.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The indoor unit 1 of the air conditioner according to the present embodiment has an indoor unit housing 2 as shown in FIG. 1, and in this indoor unit housing 2, a heat exchanger 3 and a cross-flow fan 4 that is a blower. The holding frame 5, the upper surface side air filter 6, the front surface side air filter 7, the air filter cleaning unit 8 and the like are installed. The indoor unit 1 is attached to an indoor wall surface or the like so that the front side of the indoor unit housing 2 is located in the vertical plane. In addition, as shown in FIG. 3, the upper surface side air filter 6 and the front surface side air filter 7 are provided in pairs on the left and right, respectively.

  The indoor unit housing 2 is composed of a front panel 9 and a rear panel housing 10, and is formed in a horizontally long shape having a longer width direction than the vertical width direction. A front side air inlet 12 that is an air inlet is formed on the front side of the front panel 9, and an upper side air inlet 13 that is an air inlet is formed on the upper side of the front panel 9. From the front air inlet 12 and the upper air inlet 13, indoor air is sucked into the indoor unit housing 2 when the air conditioner is in operation.

  A movable panel 15 that is supported by an opening / closing mechanism 14 and covers the front-side air inlet 12 so as to be openable / closable is fitted on the front side of the front panel 9. The movable panel 15 is located at the closing position shown in FIG. 1 when the operation of the air conditioner is stopped, and closes the front air inlet 12. The movable panel 15 rotates to the open position shown in FIG. 2 during operation of the air conditioner, moves to a position away from the front panel 9 and opens the front air inlet 12.

  An air outlet 16 is formed on the lower surface side of the front panel 9. From the air outlet 16, air sucked from the front air inlet 12 and the upper air inlet 13 during operation of the air conditioner blows out toward the room. Two louvers 17a and 17b are rotatably provided at the air outlet 16. As the louvers 17a and 17b are rotated, the air outlet 16 is opened and closed and the direction of the air blown out from the air outlet 16 is adjusted.

  In the indoor unit housing 2, a ventilation path 19 that connects the front-side air inlet 12, the upper-side air inlet 13, and the air outlet 16 is formed, and the upper-side air filter 6 is provided in the ventilation path 19. A front air filter 7, an air filter cleaning unit 8, a heat exchanger 3, a cross flow fan 4, and the like are arranged. The air sucked from the front side air inlet 12 and the upper side air inlet 13 is blown through the ventilation path 19 and blown out from the air outlet 16 into the room.

  The heat exchanger 3 is formed in an inverted V shape composed of a front heat exchanger 3a and a rear heat exchanger 3b. The refrigerant flows inside the heat exchanger 3 and can be switched between a cooling operation state and a heating operation state. The heat exchanger 3 becomes a low temperature during the cooling operation, cools the air sucked from the front side air inlet 12 and the upper side air inlet 13, and the cooled air becomes cold air from the air outlet 16 to the room. To blow out. Moreover, the heat exchanger 3 becomes high temperature during heating operation, heats the air sucked from the front-side air inlet 12 and the upper-side air inlet 13, and the heated air becomes warm air. Blow out from 16 into the room. A front drain pan 18a is disposed below the front heat exchanger 3a, and a rear drain pan 18b is disposed below the rear heat exchanger 3b. The front and rear drain pans 18a and 18b receive drain water dripped from the front and rear heat exchangers 3a and 3b during the cooling operation, and the drain water is drained to the outside through a drain hose (not shown).

  The crossflow fan 4 is a cross-flow blower formed in a long cylindrical shape, and is installed in a space between the front heat exchanger 3a and the rear heat exchanger 3b. When the cross flow fan 4 is rotationally driven, indoor air is sucked into the indoor unit housing 2 from the front air inlet 12 and the upper air inlet 13, and the sucked air passes through the ventilation path 19. After being blown and heat exchanged by the heat exchanger 3, the air is blown into the room from the air outlet 16.

  As shown in FIGS. 3 and 4, the holding frame 5 has an L-shaped cross section and is attached to the inside of the front panel 9 via an attachment member (not shown). The holding frame 5 holds an upper surface side air filter 6, a front surface side air filter 7, an air filter cleaning unit 8, an air cleaning unit 20, and the like.

  The upper surface side air filter 6 is configured by a frame portion 6a formed in a lattice shape vertically and horizontally and a mesh portion 6b provided in a plurality of opening portions partitioned by the frame portion 6a. The upper surface side air filter 6 is disposed substantially horizontally at a position covering the upper surface side air suction port 13. During the operation of the air conditioner, the air sucked from the upper surface side air suction port 13 passes through the mesh portion 6b of the upper surface side air filter 6, and dust contained in the air is captured by the mesh portion 6b.

  Further, the upper surface side air filter 6 is held so as to be capable of reciprocating from the position covering the upper surface side air suction port 13 toward the front surface side of the indoor unit housing 2. This reciprocating movement is performed by an air filter moving mechanism 21 described later provided in the air filter cleaning unit 8.

  A spur gear 43 is provided along the longitudinal direction of the frame portion 6a on the back surface of the frame portion 6a located at the center portion of the upper surface side air filter 6 in the lateral width direction. The spur gear 43 meshes with an upper surface side air filter drive gear 40 that is a drive gear of the air filter moving mechanism 21.

  The front-side air filter 7 is composed of a frame portion 7a formed in a lattice shape vertically and horizontally, and a mesh portion 7b provided in a plurality of opening portions partitioned by the frame portion 7a. The front-side air filter 7 is disposed in a substantially vertical direction at a position covering the front-side air suction port 12. During operation of the air conditioner, the air sucked from the front-side air suction port 12 passes through the mesh portion 7b of the front-side air filter 7, and dust contained in the air is captured at the mesh portion 7b.

  Further, the front side air filter 7 is held so as to be able to reciprocate from the position covering the front side air suction port 12 toward the upper surface side of the indoor unit housing 2. This reciprocating movement is performed by an air filter moving mechanism 21 described later provided in the air filter cleaning unit 8.

  A spur gear 44 is provided along the longitudinal direction of the frame portion 7a on the back surface of the frame portion 7a located at the center of the front side air filter 7 in the lateral width direction. The spur gear 44 meshes with a front-side air filter drive gear 41 that is a drive gear of the air filter moving mechanism 21.

  The air cleaning unit 20 is disposed between the front air filter 7 and the front heat exchanger 3a, and captures fine dust, odor components, and the like that have passed through the front air filter 7 by an electrostatic adsorption method.

  The air filter cleaning unit 8 is horizontally disposed between the upper surface side air filter 6 and the front surface side air filter 7, and as shown in FIG. 3, the lateral width between the upper surface side air filter 6 and the front surface side air filter 7. The dust extending in the entire direction and adhering to the upper surface side air filter 6 and the front surface side air filter 7 is removed. As shown in FIG. 6, the air filter cleaning unit 8 includes an air filter moving mechanism 21, a rotating brush 22, a dust box 24, and a seal member 26.

  As shown in FIG. 5, the edge of the upper surface side air filter 6 located in the direction intersecting with the reciprocating direction of the upper surface side air filter 6 and located on the air filter cleaning portion 8 side is as shown in FIG. The overhang part 70 and the inclined part 71 are formed. The overhanging portion 70 is formed so as to protrude toward the air filter cleaning portion 8 so that the central portion in the lateral width direction of the upper surface side air filter 6 provided with the spur gear 43 is the apex. The inclined portion 71 is formed to be inclined in a direction away from the air filter cleaning portion 8 from the overhang portion 70 toward both sides of the upper surface side air filter 6 in the lateral width direction.

  Further, the holding frame 5 is an area for holding the upper surface side air filter 6 and extends in a direction intersecting the reciprocating direction of the upper surface side air filter 6 at a position farthest from the air filter cleaning unit 8. A horizontal rail 72 is provided. The crosspiece 72 has a substantially V-shaped cross section. The horizontal rail 72 is located at a position where the upper surface side air filter 6 covers the upper surface side air suction port 13, and the other edge of the upper surface side air filter 6 intersecting the moving direction of the upper surface side air filter 6 is air. When located at a position farthest from the filter cleaning unit 8, it is located above the upper surface side air filter 6. The other edge portion of the upper surface side air filter 6 located below the horizontal rail 72 is in contact with the inner surface of the rear plate housing 10.

  In addition, the holding frame 5 is provided with a horizontal beam 73 that is located in a region where the air filter cleaning unit 8 is held and extends in the horizontal width direction of the holding frame 5. As shown in FIG. 3, the horizontal rail 73 is formed with a plurality of openings 74 that guide the air that has passed through the front-side air filter 7 to the back side of the horizontal rail 73.

  The air filter moving mechanism 21 moves the upper surface side air filter 6 and the front surface side air filter 7 respectively during cleaning to remove dust adhering to the upper surface side air filter 6 and dust adhering to the front surface side air filter 7. The indoor unit casing 2 is reciprocated toward the front side and the upper side. The reciprocating movement of the upper surface side air filter 6 is performed by rotating the upper surface side air filter drive gear 40 meshed with the spur gear 43 of the upper surface side air filter 6 forward and backward. The reciprocating movement of the front side air filter 7 is performed by rotating the front side air filter drive gear 41 meshed with the spur gear 44 of the front side air filter 7 forward and backward.

  The rotating brush 22 is supported so as to be rotatable around the center line, and adheres to the air filters 6 and 7 by contacting the upper surface side air filter 6 and the front surface side air filter 7 while rotating around the center line. Remove dust.

  The dust box 24 accommodates the rotating brush 22 therein, and has a dust receiving passage 23 for accommodating dust removed by the rotating brush 22 therein. The dust receiving passage 23 is formed on the side of the rotating brush 22 along the center line direction of the rotating brush 22. The dust box 24 is formed with a scraping protrusion 27 located between the dust receiving passage 23 and the housing space of the rotary brush 22. The scraping protrusion 27 is formed at a position where the bristles of the rotating brush 22 come into contact, and the rotating bristles 22 of the rotating brush 22 collide with the scraping protrusions 27 to adhere to the rotating brush 22. The dust being scraped is scraped off from the rotary brush 22, and the scraped dust falls into the dust receiving passage 23.

  The seal member 26 is movably provided at a position for opening and closing the opening 25 formed on the lower surface of the dust box 24. The seal member 26 is formed of a flexible elastic material such as synthetic rubber, for example, and is supported by a lift mechanism 28 described later so as to be lifted and lowered. The seal member 26 is located at a position where the opening 25 is opened as shown in FIG. 6 when the air conditioner is in operation and when the upper surface side air filter 6 and the front surface side air filter 7 are cleaned. As will be described later, when the dust in the dust receiving passage 23 is discharged to the outdoors, the seal member 26 is raised by the lift mechanism 28, and the opening 25 of the dust box 24 is closed by the seal member 26. 33 is driven.

  As shown in FIGS. 7 and 8, a handle portion 29 is provided on both the left and right sides of the dust box 24. The attachment / detachment operation of the dust box 24 to the holding frame 5 can be performed with the handle portion 29 held.

  As shown in FIG. 7, an air introduction port 30 is formed in the upper surface portion on one end side of the dust box 24, and the air introduction port 30 communicates with one end side of the dust receiving passage 23. A discharge box 31 is connected to the other end of the dust box 24 as shown in FIG. The discharge box 31 is connected to an intake / exhaust device 33 via a connection hose 32. The intake / exhaust device 33 is a device having a ventilation function of sucking indoor air and exhausting the sucked air to the outside through an exhaust hose (not shown). Therefore, when the intake / exhaust device 33 is driven, the discharge box 31 and the dust receiving passage 23 are communicated with each other, so that the air sucked from the air introduction port 30 is contained in the dust receiving passage 23, the connection hose 32, and the exhaust hose. Then, the air is exhausted to the outside, and the dust stored in the dust receiving passage 23 is exhausted to the outdoors together with the air exhausted to the outside.

  The dust box 24 is formed using an antistatic resin material and is subjected to antibacterial treatment. Therefore, dust adhesion and mold generation are prevented, and a clean state can be maintained for a long time. Similarly, the antibacterial treatment is also used for the rotating brush 22, dust adhesion and mold generation are prevented, and a clean state can be maintained for a long time.

  The air filter moving mechanism 21 includes first to fourth four drive motors 34 to 37 (see FIGS. 7 and 3) located on one end side of the holding frame 5, and drive force from the drive motors 34 to 37. Is transmitted to the gear train 38 (see FIGS. 9 and 10) and a casing 39 (see FIGS. 7 and 9) for housing the gear train 38. The drive motors 34 to 37 are attached to the outer peripheral surface of the casing 39.

  Further, as shown in FIG. 6, the air filter moving mechanism 21 includes an upper surface side air filter drive gear 40 that meshes with a spur gear 43 provided on the upper surface side air filter 6, and a spur gear provided on the front side air filter 7. And a front-side air filter drive gear 41 that meshes with 44.

  The first drive motor 34 and the second drive motor 35 are used as drive sources for reciprocally moving the upper surface side air filter 6 and the front surface side air filter 7. The third drive motor 36 is used as a drive source for rotating the rotary brush 22. Further, the fourth drive motor uses the driving force of the first drive motor 34 and the second drive motor 35 as the drive source of the upper surface side air filter drive gear 40 or the drive of the front side air filter drive gear 41. Used as a driving source for the switching mechanism 42 that performs switching for use as a source or a driving source for the lift mechanism 28.

  The gear train 38 is constituted by a plurality of gears, and each of these gears meshes and transmits a driving force as described below.

  A gear 45 is fitted and fixed to the rotating shaft of the first drive motor 34, and a gear 46 is fitted and fixed to the rotating shaft of the second drive motor 35. These gears 45 and 46 are formed with the same number of teeth, and are always meshed with the gear 47a, and the gear 47 is connected coaxially with the gear 47a. The gear 47a and the gear 47 are connected so as to rotate together. The gear 47 meshes with a gear 48 located adjacent to the gear 47, and the gear 48 always meshes with a gear 49. A gear 50 is provided coaxially with the gear 48, and the gear 48 and the gear 50 are provided so as to be individually rotatable.

  The gear 49 is supported on one end side of the gear arm 52 by the support shaft 51, the gear 53 is supported on the other end side of the gear arm 52, and these gears 49 and 53 are always meshed. The gear arm 52 is rotatably supported on the casing 39 by the support shaft 51.

  The gear arm 52 can be rotated with the support shaft 51 as a fulcrum. When the gear arm 52 is rotated with the support shaft 51 as a fulcrum, the gear 53 is located between a position engaging with the gear 50 and a position engaging with the gear 54. Swing.

  A rotating shaft 55 that rotates integrally with the gear 50 and is rotatably supported by the gear 48 is fitted and fixed to the gear 50. The rotating shaft 55 extends along the lateral width direction of the indoor unit 1, and the extended tip side is pivotally supported by a bearing. Further, the upper surface side air filter drive gear 40 is fitted and fixed to the rotary shaft 55.

  A rotating shaft 56 that rotates integrally with the gear 54 is fitted and fixed to the gear 54. The rotating shaft 56 extends along the lateral width direction of the indoor unit 1, and the extended tip side is pivotally supported by a bearing. A front side air filter drive gear 41 is fitted and fixed to the rotary shaft 56.

  A rotation shaft (not shown) of the fourth drive motor 37 extends into the casing 39, and a drive lever 57 is fixed to the rotation shaft. One end of a drive arm 58 is rotatably connected to the tip of the drive lever 57, and a gear 53 is supported on the other end side of the drive arm 58. The gear 53 is supported by both the drive arm 58 and the gear arm 52. As a result, the drive lever 57, the drive arm 58, and the gear arm 52 have the rotation shaft of the fourth drive motor 37 and the support shaft 51 as the fixed shaft, and the connecting portion between the drive lever 57 and the drive arm 58 and the drive arm 58. And a link mechanism having a connecting portion between the gear arm 52 and a movable shaft. A protrusion 59 is formed on the side of the drive arm 58 that is connected to the drive lever 57. The protrusion 59 contacts and separates from the actuator 60a of the microswitch 60 when the drive arm 58 moves, the microswitch 60 is turned on / off, and the operating state of the drive arm 58 is detected.

  At the end of the gear arm 52 on the side where the gear 53 is supported, an arcuate internal tooth portion 61 centering on the support shaft 51 is formed on the back side of the surface on which the gear 53 is supported. A lift gear 62 meshes with the internal tooth portion 61. One end of a support shaft 63 for sealing provided through the casing 39 and extending in the horizontal width direction of the indoor unit 1 is fitted and fixed to the lift gear 62.

  The seal support shaft 63 is rotatably supported by a bearing attached to the holding frame 5, is located on the lower surface side of the seal member 26, and is provided facing the longitudinal direction of the seal member 26. ing. A seal drive cam 64 is attached to the seal support shaft 63. The seal driving cam 64 is formed with a semi-disc-shaped cam portion 64a.

  On the other hand, the seal member 26 is attached to a seal base 65, and the seal base 65 is supported by a seal guide mechanism 66 having a pantograph structure. The seal guide mechanism 66 is attached to the holding frame 5 and is folded into a flat shape as shown in FIG. 6 in a normal posture where no lift force is applied. Simultaneously, the seal member 26 is pushed upward.

  The switching mechanism 42 described above includes a fourth drive motor 37, a drive lever 57, a drive arm 58, a gear 53, a gear arm 52, an internal gear 61, a lift gear 62, and a seal support shaft 63. And a seal driving cam 64.

  The above-described lift mechanism 28 includes a gear arm 52, an internal tooth portion 61, a lift gear 62, a seal support shaft 63, a seal drive cam 64, and a seal guide mechanism 66.

  In such a configuration, when the operation of the air conditioner is stopped, the movable panel 15 is located at the closed position shown in FIG. 1 and the front air inlet 12 is closed.

  During operation of the air conditioner, the movable panel 15 rotates to the open position shown in FIG. 2, and a gap is generated between the movable panel 15 and the front panel 9. When the cross-flow fan 4 is driven as the air conditioner starts operating, the indoor unit housing is formed from the upper surface side air inlet 13 and the front side air inlet 12 formed in the front panel 9. 2 is sucked into.

  The air sucked into the indoor unit housing 2 from the upper surface side air suction port 13 and the front surface side air suction port 12 flows through the ventilation path 19 and passes through the upper surface side air filter 6 and the front surface side air filter 7. It reaches the periphery of the heat exchanger 3 and is heated or cooled in the process of passing through the periphery of the heat exchanger 3, and is blown into the room from the air outlet 16 as hot air or cold air.

  When the air sucked into the indoor unit housing 2 by the drive of the cross flow fan 4 passes through the upper surface side air filter 6 and the front surface side air filter 7, dust contained in the air is separated from the upper surface side air filter 6. It is captured by the front side air filter 7.

  When a certain amount of dust adheres to the upper surface side air filter 6 and the front surface side air filter 7, or when the accumulated operation time reaches the set value, the upper surface side air filter 6 and the front surface side air filter 7 Cleaning is automatically performed to remove the adhering dust. This cleaning is started by a user operating a remote control (not shown) of the air conditioner to output a cleaning start signal, or a control unit (not shown) provided in the indoor unit 1. Is started when a cleaning start signal is output.

  When the upper surface side air filter 6 and the front surface side air filter 7 are automatically cleaned, either the upper surface side air filter 6 or the front surface side air filter 7 may be performed first. The case where the air filter 6 is performed first will be described as an example.

  When cleaning the upper surface side air filter 6 and the front surface side air filter 7, the movable panel 15 is rotated to the open position as shown in FIG.

  Next, the fourth drive motor 37 is driven to operate the switching mechanism 42 so that the drive force from the first drive motor 34 and the second drive motor 35 can be transmitted to the upper air filter drive gear 40. And Specifically, by driving the fourth drive motor 37, the gear arm 52 and the drive arm 58 are rotated to the positions shown in FIG. By this rotation, the gear 53 and the gear 50 are engaged with each other.

  In a state where the gear 53 and the gear 50 are engaged with each other, the first drive motor 34 and the second drive motor 35 are driven. When the first drive motor 34 is driven, the gear 45 is rotationally driven, and when the second drive motor 35 is driven, the gear 46 is rotationally driven. The gears 45 and 46 mesh with a gear 47a that is coaxially fixed with the gear 47, and the gear 47 is rotationally driven when the gears 45 and 46 are rotationally driven.

  The rotation of the gear 47 is transmitted to a gear 48 that meshes with the gear 47, the rotation of the gear 48 is transmitted to a gear 49 that meshes with the gear 48, and the rotation of the gear 49 is transmitted to a gear 53 that meshes with the gear 49. The gear 50 that meshes with the gear 53 is driven to rotate.

  The gear 50 is fitted and fixed to the rotary shaft 55, and the rotary shaft 55 rotates around the center line when the gear 50 rotates. When the rotation shaft 55 rotates around the center line, the upper surface side air filter drive gear 40 fitted and fixed to the rotation shaft 55 rotates integrally with the rotation shaft 55. The upper surface side air filter drive gear 40 meshes with a spur gear 43 of the upper surface side air filter 6 as shown in FIG. 6, and the upper surface side air filter drive gear 40 rotates counterclockwise, whereby the upper surface side air filter 6 moves in the direction indicated by the broken line in FIG. 6 from the upper surface side to the front surface side, and the upper surface side air filter 6 enters the air filter cleaning portion 8. When the upper surface side air filter 6 enters the air filter cleaning unit 8, the upper surface side air filter 6 moves on a locus in contact with the rotating brush 22.

  In the process in which the upper surface side air filter 6 moves in the direction of the broken arrow shown in FIG. 6, the third drive motor 36 is driven to rotate the rotary brush 22. The rotating rotary brush 22 comes into contact with the upper surface side air filter 6 moving from the upper surface side to the front surface side, whereby the dust adhering to the upper surface side air filter 6 is removed, and the removed dust enters the dust receiving passage 23. Be contained.

  After the upper surface side air filter 6 has moved to the most front side moving position, the rotation directions of the first drive motor 34 and the second drive motor 35 are reversed so that the upper surface side air filter drive gear 40 is turned clockwise. Rotate around. By this rotation, the upper surface side air filter 6 moved to the front surface side moves toward the original position on the upper surface side, and in this moving process, the rotating brush 22 is driven to rotate and contacts the upper surface side air filter 6 to rotate. The dust is removed by the brush 22.

  In this embodiment, two motors of a first drive motor 34 and a second drive motor 35 are used as motors for rotating the upper surface side air filter drive gear 40. Although it is possible to use a single motor to rotate the upper surface side air filter drive gear 40, in that case, it is necessary to use a large motor to secure the necessary torque. In order to prevent interference with the front panel 9, the indoor unit housing 2 needs to be enlarged. Therefore, as shown in the present embodiment, each of the drive motors 34, by rotating and driving the upper surface side air filter drive gear 40 with the two motors of the first drive motor 34 and the second drive motor 35, 35 can be reduced in size, and the mounting space of the motor can be reduced.

  As shown in FIG. 5, the upper surface side air filter 6 includes an overhanging portion 70 located at the center in the lateral width direction on the edge of the upper surface side air filter 6 on the air filter cleaning portion 8 side, Inclined portions 71 located on both sides are formed. For this reason, in the upper surface side air filter 6 that enters the air filter cleaning unit 8 for cleaning, the overhanging portion 70 first enters the air filter cleaning unit 8, and then the inclined portion 71 gradually moves into the air filter cleaning unit. Go into 8.

  Therefore, even when the upper surface side air filter 6 located at a position covering the upper surface side air suction port 13 is inclined obliquely so that the inclined portion 71 on one side is upward or downward, the upper surface side air filter 6 has a posture. The air filter smoothly enters the air filter cleaning unit 8 while being automatically corrected to the horizontal state. Therefore, when cleaning the upper surface side air filter 6, the edge of the upper surface side air filter 6 on the air filter cleaning part 8 side hits the air filter cleaning part 8, and the upper surface side air filter 6 enters the air filter cleaning part 8. The situation that it cannot be carried out does not occur, and the upper surface side air filter 6 can be cleaned smoothly.

  Further, the horizontal rail 72 provided in the holding frame 5 is located at a position where the other edge of the upper surface side air filter 6 intersects the moving direction of the upper surface side air filter 6 and is farthest from the air filter cleaning unit 8. When it does, it is located above the upper surface side air filter 6. For this reason, the overhang dimension from the wall surface of the indoor unit 1 attached to the wall surface of the room can be reduced, and the area where the upper surface side air filter 6 captures dust can be increased. And the dust trapping performance of the upper surface side air filter 6 can be improved.

  In addition, since a plurality of openings 74 are formed in the horizontal rail 73 provided in the region of the holding frame 5 that holds the air filter cleaning unit 8, a part of the air that has passed through the front side air filter 7 is formed. It flows through the opening 74. For this reason, the resistance of the air flowing through the ventilation path 19 can be reduced, and the air blowing performance of the air conditioner can be improved.

  When the front side air filter 7 is cleaned after the cleaning of the upper side air filter 6, the fourth drive motor 37 is driven to operate the switching mechanism 42, and the first drive motor 34 and the second drive motor are driven. 35 is set to a state in which the driving force from 35 can be transmitted to the front side air filter drive gear 41. Specifically, by driving the fourth drive motor 37, the gear arm 52 and the drive arm 58 are rotated to the positions shown in FIG. By this rotation, the gear 53 and the gear 54 mesh with each other.

  In a state where the gear 53 and the gear 54 are engaged with each other, the first drive motor 34 and the second drive motor 35 are driven. By driving the first drive motor 34 and the second drive motor 35, the gears 45 and 46 are rotationally driven, and the gear 47a meshing with the gears 45 and 46 is rotationally driven and fixed coaxially with the gear 47a. The gear 47 is driven to rotate. The rotation of the gear 47 is transmitted to the gear 48, the rotation of the gear 48 is transmitted to the gear 49, the rotation of the gear 49 is transmitted to the gear 53, and the gear 54 meshing with the gear 53 is driven to rotate.

  The gear 54 is fitted and fixed to the rotary shaft 56, and the rotary shaft 56 rotates around the center line when the gear 54 rotates. When the rotation shaft 56 rotates around the center line, the front-side air filter drive gear 41 fitted and fixed to the rotation shaft 56 rotates integrally with the rotation shaft 56. The front side air filter drive gear 41 meshes with the spur gear 44 of the front side air filter 7 as shown in FIG. 6, and when the front side air filter drive gear 41 rotates clockwise, the front side air filter 7 Moves from the front side to the upper side in the direction of the arrow indicated by the broken line in FIG. 6, and the front side air filter 7 enters the air filter cleaning unit 8. When the front-side air filter 7 enters the air filter cleaning unit 8, the front-side air filter 7 moves on a locus that contacts the rotating brush 22.

  In the process in which the front side air filter 7 moves in the direction of the broken arrow shown in FIG. 6, the third drive motor 36 is driven to rotate the rotary brush 22. The rotating brush 22 that contacts the front side air filter 7 that moves from the front side to the top side removes dust adhering to the front side air filter 7, and the removed dust enters the dust receiving passage 23. Be contained.

  After the front side air filter 7 has moved to the uppermost position, the direction of rotation of the first drive motor 34 and the second drive motor 35 is reversed to reverse the front side air filter drive gear 41. Rotate clockwise. By this rotation, the front-side air filter 7 that has moved to the upper surface side moves toward the original position on the front-surface side, and even during this movement process, the rotary brush 22 is driven to rotate and contacts the front-side air filter 7 to rotate. The dust is removed by the brush 22.

  When the gear 53 rotates between a position where it engages with the gear 50 shown in FIG. 11B and a position where it engages with the gear 54 shown in FIG. 11A, the gear arm 52 rotates around the support shaft 51 as a fulcrum. . During this rotation, the lift gear 62 that meshes with the internal teeth 61 formed on the gear arm 52 rotates, and the seal support shaft 63 rotates together with the lift gear 62. When the seal support shaft 63 rotates, the seal drive cam 64 rotates together with the seal support shaft 63. As shown in FIG. 11C, when the gear 53 is positioned at an intermediate position between the gear 50 and the gear 54, the cam portion 64a of the seal driving cam 64 is connected to the seal guide mechanism 66 as shown in FIG. The seal member 26 is lifted by the lift mechanism 28, and the seal member 26 closes the opening 25 of the dust box 24. By driving the intake / exhaust device 33 with the seal member 26 closing the opening 25, the dust accommodated in the dust receiving passage 23 is sucked out from the dust receiving passage 23, and the inside of the connection hose 32 and the exhaust hose. It is discharged outside through the inside.

  In the present embodiment, the case where the protruding portion 70 and the inclined portion 71 are formed on one edge of the upper surface side air filter 6 has been described as an example. However, such an extended portion and the inclined portion are described. May be formed on the front side air filter 7. Specifically, an overhanging portion that protrudes toward the air filter cleaning portion 8 is formed so that the central portion in the lateral width direction of the front side air filter 7 provided with the spur gear 44 is the apex, and from the overhanging portion. You may form the inclination part inclined in the direction which leaves | separates from the air filter cleaning part 8 toward the both sides of the horizontal width direction of the front side air filter 7. FIG.

  By forming the overhanging portion and the inclined portion on the front side air filter 7, the front side air filter 7 smoothly enters the air filter cleaning portion 8 when the front side air filter 7 is cleaned. 7 can be smoothly cleaned.

It is a vertical side view which shows the indoor unit of the air conditioner of one embodiment of this invention. It is a vertical side view which shows the indoor unit of the air conditioner at the time of a driving | operation. It is a perspective view which shows the holding | maintenance frame which hold | maintained the upper surface side air filter, the front surface side air filter, and the air filter cleaning part. It is a vertical side view of FIG. It is a top view which shows the attachment state of an upper surface side air filter. It is a vertical side view which shows an air filter cleaning part and a lift mechanism. It is a perspective view which shows the one end side of the internal structure of an indoor unit housing | casing. It is a perspective view which shows the other end side of the internal structure of an indoor unit housing | casing. It is a perspective view which shows a gear train. It is a perspective view which shows a gear train and a lift mechanism. It is a side view explaining the operation state of a gear train.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 2 ... Indoor unit housing | casing, 3 ... Heat exchanger, 4 ... Cross-flow fan (indoor fan), 6 ... Upper surface side air filter, 7 ... Front side air filter, 8 ... Air filter cleaning part, 12 ... Front side air inlet (Air suction port), 13 ... Upper surface side air suction port (Air suction port), 16 ... Air outlet, 19 ... Ventilation path, 40 ... Upper surface side air filter drive gear (drive gear), 41 ... Front side air filter drive Gear (drive gear), 43 ... spur gear, 44 ... spur gear, 70 ... overhang, 71 ... inclined portion, 72 ... horizontal rail

Claims (2)

An air inlet is formed in the upper surface and the front surface, an air outlet is formed in the lower part, and an air filter, a heat exchanger, and an indoor fan are disposed in the ventilation path that connects the air inlet and the air outlet. An indoor unit housing
The air filter comprises an upper surface side air filter that covers the air suction port on the upper surface and a front side air filter that covers the air suction port on the front surface,
Between the upper surface side air filter and the front surface side air filter, horizontally disposed, reciprocally move the upper surface side air filter and the front surface side air filter toward the front surface side and the upper surface side, respectively. It has an air filter cleaning part that removes dust adhering to these upper surface side air filter and front surface side air filter,
The air filter cleaning unit has a drive gear that meshes with a spur gear provided at a central portion in the lateral width direction of the upper surface side air filter and the front surface side air filter.
In the air conditioner filter cleaning device,
At one edge portion of the upper surface side air filter that intersects the moving direction of the upper surface side air filter and is located on the air filter cleaning portion side, is located at the center in the lateral width direction where the spur gear is provided. An air conditioner comprising: an overhanging portion protruding toward the air filter cleaning portion; and an inclined portion inclined in a direction away from the air filter cleaning portion toward both sides in the lateral width direction from the overhanging portion. Filter cleaning device. A holding frame body that movably holds the upper surface side air filter is provided in the indoor unit housing,
The holding frame is provided with a horizontal beam extending in a direction intersecting with the moving direction of the upper surface side air filter,
2. The air conditioner according to claim 1, wherein the horizontal rail is positioned above the upper surface side air filter when the upper surface side air filter is positioned at a position covering the air suction port on the upper surface. Filter cleaning device.

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