JP2008151367A - Indoor unit of air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a projecting dimension of an air filter from an indoor unit housing so that discomfort in appearance is not given, in cleaning the air filter disposed in the indoor unit housing by reciprocating the same. <P>SOLUTION: This indoor unit 1 of the air conditioner comprises an upper face-side air filter 6 positioned in opposition to an air suction opening 13 formed on an upper face side of the indoor unit housing 2, and a front face-side air filter 7 positioned in opposition to an air suction opening 12 formed at a front face side of the indoor unit housing 2, an air filter cleaning portion 8 is disposed to clean the air filters 6, 7 by reciprocating them between the upper face-side and the front face-side of the indoor unit housing 2, and further the indoor unit housing 2 is provided with a front face-side opening 12 allowing a front end side of the upper face-side air filter 6 to extend to an outer side of the indoor unit housing 2 along the moving direction in cleaning, and an upper face-side opening 13 allowing an upper end-side of the front face-side air filter 7 to extend to an outer side of the indoor unit housing 2 along the moving direction in cleaning. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an indoor unit of an air conditioner, and more particularly to an indoor unit of an air conditioner having a function of automatically cleaning an air filter that captures dust contained in indoor air.

  In an indoor unit of an air conditioner, indoor air sucked into an indoor unit housing from an air suction port is passed through an air filter, and dust contained in the indoor air is captured by the air filter and then guided to a heat exchanger. However, if the air-conditioning operation is continued for a long period of time, dust accumulates on the air filter, resulting in a flow resistance of room air to the heat exchanger, and heat exchange efficiency is reduced.

  For this reason, it is necessary to periodically remove the air filter and remove the adhering dust. 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. Then, as described in the following Patent Document 1, an air conditioner indoor unit having a function of automatically cleaning an air filter that captures dust 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 through the filter cleaning portion along the sliding direction, and dust trapped in the air filter in the reciprocating process is removed from the air filter.
JP 2004-245440 A

  However, the above-described air conditioner indoor unit does not consider the following points.

  The air filter is configured as a single member, and has a dimension that covers the suction side of the front side and the upper side of the ventilation path in the indoor unit housing. For this reason, when the air filter is reciprocated for cleaning, the one end side of the air filter is greatly exposed to the room from the front side of the indoor unit housing, which gives a sense of incongruity to the resident and is not aesthetically preferable. .

  For this reason, when the air filter is configured not to be exposed from the inside of the housing, a space for housing the air filter is required in the housing, the housing is enlarged, and the conventional automatic air filter cleaning function is provided. An indoor unit that does not have a problem that it cannot be adopted.

  The present invention has been made to solve such a problem, and an object of the present invention is to remove an air filter from an indoor unit casing when the air filter installed in the indoor unit casing is moved back and forth for cleaning. The air filter automatic cleaning function can be added without reducing the projecting dimensions of the housing, and without increasing the size of the housing. It is providing the indoor unit of the air conditioner which does not give.

  A first feature according to an embodiment of the present invention is that, in an indoor unit of an air conditioner, an air suction port is formed on an upper surface and an upper front portion of the indoor unit housing, and an air is formed on a lower front surface of the indoor unit housing. In an air conditioner indoor unit in which an air filter, a heat exchanger, and an indoor fan are arranged in a ventilation path in which an air outlet is formed and communicates the air inlet and the air outlet, the air filter includes: The upper surface side air filter, which is divided into an upper surface side and a front surface side and is located on the upper surface side of the indoor unit housing, and a front air filter located on the front surface side of the indoor unit housing, Between the front air filter and the front side air filter. The upper side air filter and the front side air filter are reciprocated toward the front side and the upper side, respectively. Filter and front air filter An air filter cleaning unit that removes dust trapped on the top surface of the indoor unit casing, or when the top side air filter moves to the front side of the indoor unit casing. When moving to the side, at least one of the upper surface side air filter or the front surface side air filter is configured to extend to the outside of the indoor unit housing.

  According to the present invention, the air filter is composed of the upper surface side air filter and the front surface side air filter, and the length dimension along the moving direction is reduced, so that the upper surface side air filter and the front surface side air filter are moved back and forth. When cleaning, it is possible to reduce the protruding dimension of the upper surface side air filter or the front side air filter from the indoor unit housing, so that it is possible to reduce a sense of discomfort in appearance during cleaning, and to reduce the indoor unit housing. The air filter protruding from the body does not need to secure a storage space in the indoor unit housing and is bent more than necessary when moving the filter to the storage space, compared to a configuration in which the air filter is folded and stored in the indoor unit housing. Therefore, the durability of the air filter can be improved.

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

  As shown in FIG. 1, an indoor unit 1 of an air conditioner according to the present embodiment has an indoor unit housing 2, and in this indoor unit housing 2, a heat exchanger 3 and a cross-flow fan that is an indoor fan. 4, a holding frame 5, an upper surface side air filter 6, a front surface side air filter 7, an 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 positioned in a vertical plane.

  The indoor unit housing 2 is composed of a front panel 9 constituting the front housing and a rear plate housing 10 constituting the rear housing, and is formed in a horizontally long shape whose lateral width direction is longer than the vertical width direction. ing. 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 is attached to the front side of the front panel 9 and is supported by an opening / closing mechanism 14 and covers the front side air suction port 12 so as to be openable and closable. 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. When the air conditioner is in operation and when the upper air filter 6 and the front air filter 7 are cleaned, the movable panel 15 rotates to the open position shown in FIG. 2 and moves to a position away from the front panel 9 to the front. At the same time, the front air inlet 12 is opened.

  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 air inlets 12, 13 on the front side and the upper surface side and the air outlet 16 is formed, and the upper side air filter 6, A front side air filter 7, an air filter cleaning unit 8, a heat exchanger 3, a cross flow fan 4, and the like are arranged.

  The heat exchanger 3 is formed in an inverted V shape including a front heat exchanger portion 3a and a rear heat exchanger portion 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 section 3a, and a rear drain pan 18b is disposed below the rear heat exchanger section 3b. The front and rear drain pans 18a and 18b receive drain water dripped from the front and rear heat exchanger sections 3a and 3b during the cooling operation, and the drain water is drained to the outside through a drain hose (not shown).

  The cross-flow fan 4 is a cross-flow fan formed in a long cylindrical shape, and is installed in a space between the front heat exchanger portion 3a and the rear heat exchanger portion 3b. When the crossflow fan 4 is driven to rotate, 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 includes a frame portion 6a and a mesh portion 6b provided in an opening portion partitioned by the frame portion 6a. The upper surface side air filter 6 is arranged in a substantially horizontal direction at a position facing the upper surface side air suction port 13, and the air sucked from the upper surface side air suction port 13 during operation of the air conditioner is a mesh of the upper surface side air filter 6. In the process of passing through the part 6b, dust contained in the air is captured.

  The front-side air filter 7 includes a frame portion 7a and a mesh portion 7b provided at an opening portion partitioned by the frame portion 7a. The front-side air filter 7 is arranged in a substantially vertical direction at a position facing the front-side air suction port 12, and the air sucked from the front-side air suction port 12 during operation of the air conditioner is a mesh of the front-side air filter 7. In the process of passing through the part 7b, dust contained in the air is captured. The front end side edge portion of the upper surface side air filter 6 and the upper end side edge portion of the front surface side air filter 7 extend in the horizontal direction and face each other in parallel.

  The air cleaning unit 20 is disposed between the front side air filter 7 and the front heat exchanger section 3a, and captures fine dust, odor components, and the like that have passed through the front side 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. In the air filter cleaning unit 8, the upper surface side air filter 6 and the front surface side air filter 7 are connected to the indoor unit housing 2 at the time of cleaning to remove dust adhering to the upper surface side air filter 6 and the front surface side air filter 7. There is provided an air filter moving mechanism 21 that reciprocates between the upper surface side and the front surface side.

  As shown in FIG. 5, the air filter cleaning unit 8 includes a rotary brush 22 that removes dust adhering to the upper surface side air filter 6 and the front surface side air filter 7, and accommodates the rotary brush 22 inside and rotates. A dust box 24 having a dust receiving passage 23 for storing dust removed by the brush 22 and a seal member 26 movable to a position for opening and closing an opening 25 formed on the lower surface of the dust box 24 are provided.

  A part of the rotating brush 22 is exposed from the opening 25 of the dust box 24. At the time of cleaning the upper surface side air filter 6 and the front surface side air filter 7, the position where the upper surface side air filter 6 and the front surface side air filter 7 are in contact with the opening 25 is moved, as indicated by the dashed arrows in FIG. 5. In this movement process, the upper surface side air filter 6 and the front surface side air filter 7 come into contact with the rotating brush 22, and dust is removed from the upper surface side air filter 6 and the front surface side air filter 7.

  The dust receiving passage 23 is a space portion in the dust box 24 formed on the side portion of the rotating brush 22 and formed along the axial direction of the rotating brush 22. A scraping protrusion 27 is formed between the dust receiving passage 23 and the housing space of the rotary brush 22 in the dust box 24. The scraping protrusion 27 is disposed at a position where the bristles of the rotating brush 22 come into contact with each other. The scraping protrusion 27 collides with the scraping protrusion 27 on the bristles of the rotating brush 22, thereby causing dust attached to the rotating brush 22. Is scraped off from the rotating brush 22 and falls into the dust receiving passage 23.

  The seal member 26 is formed of a flexible elastic material such as synthetic rubber, and is supported by a lift mechanism 28 described later. As shown in FIG. 5, the seal member 26 is located at a position where the opening 25 is opened during normal time and when cleaning the upper surface side air filter 6 and the front surface side air filter 7. The opening mechanism 25 is closed by the seal member 26 when the lift mechanism 28 is actuated and the seal member 26 is raised and contacts the dust box 24.

  As shown in FIGS. 6 and 7, a handle portion 29 is provided on both the left and right sides of the dust box 24. The dust box 24 can be attached to and detached from the holding frame 5 with the handle portion 29 held. As shown in FIG. 6, 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 that takes in indoor air and exhausts the air outside through an exhaust hose (not shown). Therefore, by connecting the discharge box 31 and the dust receiving passage 23 when the intake / exhaust device 33 is driven, the dust accommodated in the dust receiving passage 23 is discharged outside through the connection hose 32 and the exhaust hose. Is done.

  The dust box 24 is formed using an antistatic resin material and is subjected to antibacterial treatment. Therefore, it is possible to prevent the adhesion of dust and the generation of mold and maintain a clean state over a long period of time. Similarly, an antibacterial treatment is used for the rotating brush 22 to prevent the adhesion of dust and the generation of mold and maintain a clean state for a long period of time.

  The air filter moving mechanism unit 21 includes first to fourth drive motors 34 to 37 (see FIGS. 6 and 3) located on one end side in the indoor unit housing 2, and drive motors 34 to 37. A gear train 38 (see FIGS. 8 and 9) to which the driving force is transmitted and a casing 39 (see FIGS. 6 and 8) for housing the gear train 38 are provided. Further, as shown in FIG. 5, the air filter moving mechanism unit 21 includes an upper surface side air filter moving gear 40 and a front surface side air filter moving gear 41 that are positioned at a substantially central portion in the horizontal width direction in the indoor unit housing 2. I have. 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. 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 movement gear 40 or the drive source of the front side air filter movement gear 41. Alternatively, it is used as a drive source for the switching mechanism unit 42 that performs switching for use as a drive source for the lift mechanism 28.

  The upper surface side air filter moving gear 40 meshes with a rack 43 formed on the back surface side of the frame portion 6a located at a substantially central portion in the lateral width direction of the upper surface side air filter 6, and the upper surface side air filter moving gear 40 is rotationally driven. As a result, the upper surface side air filter 6 reciprocates between the upper surface side and the front surface side. The front side air filter moving gear 41 meshes with a rack 44 formed on the back side of the frame portion 7a located at a substantially central portion in the lateral width direction of the front side air filter 7, and the front side air filter moving gear 41 is rotationally driven. As a result, the front side air filter 7 reciprocates between the front side and the upper side.

  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. The upper surface side air filter moving gear 40 is fitted and fixed to the rotating 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. The front side air filter moving gear 41 is fitted and fixed to the rotating 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 micro switch 60 when the drive arm 58 moves, and the micro switch 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. 5 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 the fourth drive motor 37, the drive lever 57, the drive arm 58, the gear 53, the gear arm 52, the internal gear 61, the lift gear 62, and the 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.

  On the front side of the front panel 9, when the upper surface side air filter 6 moves to the front side of the indoor unit housing 2 for cleaning, the front end side of the upper surface side air filter 6 moves along the moving direction in the indoor unit housing. A front-side air suction port 12 is formed as a front-side opening that allows the outer side 2 to extend outside. The front side air suction port 12 is formed with a width dimension larger than the width dimension of the upper surface side air filter 6.

  On the upper surface side of the front panel 9, when the front side air filter 7 moves to the front side of the indoor unit housing 2 for cleaning, the upper end side of the front side air filter 7 moves along the moving direction. An upper surface side air inlet 13 is formed as an upper surface side opening that allows the outer surface 2 to extend outside. The upper surface side air inlet 13 is formed with a width dimension larger than the width dimension of the front side air filter 7.

  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.

  When the operation of the air conditioner is started, 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.

  In the process in which the air sucked into the indoor unit housing 2 by driving 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 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 operating a remote controller (not shown) of the air conditioner and outputting a cleaning start signal, or cleaning is performed from a control unit (not shown) provided in the indoor unit 1. It is started by outputting a start signal.

  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 portion 42, so that the drive force from the first drive motor 34 and the second drive motor 35 can be transmitted to the upper surface side air filter moving gear 40. State. 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 moving gear 40 fitted and fixed to the rotation shaft 55 rotates integrally with the rotation shaft 55. The upper surface side air filter moving gear 40 meshes with the rack 43 of the upper surface side air filter 6 as shown in FIG. 5, and when the upper surface side air filter moving gear 40 rotates counterclockwise, the upper surface side air filter 6 is rotated. Moves from the upper surface side to the front surface side in the direction indicated by the broken line in FIG. When the upper surface side air filter 6 moves in the direction of the arrow indicated by the broken line, the upper surface side air filter 6 moves on a trajectory 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. 5, the third drive motor 36 is driven to rotate the rotary brush 22. When the rotating rotary brush 22 contacts the upper surface side air filter 6 moving from the upper surface side to the front surface side, dust adhering to the upper surface side air filter 6 is removed, and the removed dust is accommodated in the dust receiving passage 23. The

  After the upper surface side air filter 6 has moved to the frontmost position, the rotation directions of the first drive motor 34 and the second drive motor 35 are reversed, whereby the upper surface side air filter moving 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 the rotating brush 22 is driven to rotate in this moving process, so that the dust is removed by the rotating brush 22. Repeated.

  In this embodiment, two motors including a first drive motor 34 and a second drive motor 35 are used as motors for rotating the upper air filter moving gear 40. Although it is possible to use a single motor for rotationally driving the upper surface side air filter moving gear 40, in that case, it is necessary to use a large motor in order 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, the upper surface side air filter moving gear 40 is rotationally driven by the two motors of the first drive motor 34 and the second drive motor 35, so that the torque that is half of the required torque. By using the two drive motors 34 and 35 provided with the above, it is possible to reduce the size of the two drive motors 34 and 35, and to eliminate the occurrence of problems related to the motor mounting space.

  When cleaning the front side air filter 7 after finishing 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 are driven. The driving force from the motor 35 can be transmitted to the front air filter moving 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 rotating shaft 56 rotates around the center line, the front-side air filter moving gear 41 fitted and fixed to the rotating shaft 56 rotates integrally with the rotating shaft 56. As shown in FIG. 5, the front-side air filter moving gear 41 is engaged with the rack 44 of the front-side air filter 7, and the upper-side air filter moving gear 40 rotates clockwise so that the front-side air filter 7 It moves in the direction of the arrow indicated by the broken line in FIG. When the front side air filter 7 moves in the direction of the arrow indicated by the broken line, the front side air filter 7 moves on a locus in contact with 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. 5, the third drive motor 36 is driven to rotate the rotary brush 22. When the rotating rotary brush 22 contacts the front side air filter 7 moving from the front side to the upper side, dust adhering to the front side air filter 7 is removed, and the removed dust is accommodated in the dust receiving passage 23. The

  After the front-side air filter 7 has moved to the position where the front-side air filter 7 is moved to the uppermost side, the rotation direction of the first drive motor 34 and the second drive motor 35 is reversed to reverse the front-side air filter movement gear 41. Rotate clockwise. By this rotation, the upper surface side air filter 6 moved to the front side moves toward the original position on the front side, and the rotary brush 22 is driven to rotate in this moving process, so that the dust is removed by the rotary brush 22. Repeated.

  When the gear 53 rotates between a position where it engages with the gear 50 shown in FIG. 10B and a position where it engages with the gear 54 shown in FIG. 10A, 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. 10C, when the gear 53 is located 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.

  When the upper surface side air filter 6 is moved from the upper surface side to the front surface side in order to clean the upper surface side air filter 6, the upper surface side air filter 6 moves to a position indicated by a two-dot chain line in FIG. The front end side of the filter 6 extends outside the front panel 9 along the moving direction. When the front side air filter 7 is moved from the front side to the upper side in order to clean the front side air filter 7, the front side air filter 7 moves to the position indicated by the two-dot chain line in FIG. The upper end side of the side air filter 7 extends outside the front panel 9 along the moving direction.

  Here, since the air filter used in this indoor unit is composed of the upper surface side air filter 6 and the front surface side air filter 7, the air filter is more cleaned than the case where the air filter is formed as a whole. The length in the direction along the moving direction is about half. For this reason, when the upper surface side air filter 6 and the front surface side air filter 7 are moved during cleaning and the front end side of the upper surface side air filter 6 is projected from the front panel 9 to the outside of the indoor unit housing 2, Since the protruding amount is as small as the depth dimension of the indoor unit housing 2, the tip portion does not reach the air outlet 16 side and stays at the front front position of the indoor unit housing 2. When the upper end protrudes from the front panel 9, the upper end protrudes rearward above the upper air inlet 13 of the indoor unit 1 that is generally mounted at the wall height of the room. The protruding state of the air filter does not give an uncomfortable appearance, and the air filter can be automatically cleaned.

  Further, a movable panel 15 is provided on the front side of the front panel 9, and the movable panel 15 is moved to a position away from the front panel 9 when cleaning the upper surface side air filter 6. For this reason, a space where the upper surface side air filter 6 protrudes outward from the front panel 9 can be secured between the front panel 9 and the movable panel 15, and the upper surface side air filter 6 protruding from the front panel 9 can be secured. Since it can be blindfolded, it is possible to prevent a decrease in appearance during cleaning.

  Further, the top side air filter 6 and the front side air filter 7 that move during cleaning are projected from the front panel 9 at the front end side in the moving direction, and the top side air filter 6 and the front side air filter 7 that move during cleaning are It is not necessary to forcefully bend or bend it and keep it in the indoor unit housing 2. For this reason, without using a storage space in the indoor unit housing 2, it can be shared with a model in which a conventional air filter automatic cleaning device is not mounted. Further, the upper side air filter 6 and the front side air filter 7 can be smoothly moved during cleaning, and the torque for moving the upper side air filter 6 and the front side air filter 7 can be reduced. Can do.

  In the present embodiment, both the air filter divided into the upper surface and the front surface are configured to extend outward from the indoor unit housing. However, only one of them may be configured to extend. In this case, the employed air filter side can obtain the above-described one effect.

It is a vertical side view which shows the indoor unit of the air conditioner which concerns on one embodiment of this invention. It is a vertical side view which shows the indoor unit of the air conditioner at the time of cleaning of an air filter. 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 vertical side view which shows an air filter cleaning part and a lift mechanism part. 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 1 ... Indoor unit, 2 ... Indoor unit housing, 3 ... Heat exchanger, 4 ... Blower, 6 ... Upper surface side air filter, 7 ... Front side air filter, 8 ... Air filter cleaning part, 12 ... Air inlet, Front Side opening, 13 ... Air inlet, Upper surface side opening, 15 ... Movable panel, 16 ... Air outlet, 19 ... Ventilation path

Claims (5)

An air inlet is formed in the upper surface and the front upper part of the indoor unit casing, an air outlet is formed in the lower front part of the indoor unit casing, and the air inlet and the air outlet communicate with each other. In an indoor unit of an air conditioner in which an air filter, a heat exchanger, and an indoor fan are arranged,
The air filter includes an upper surface side air filter that is divided into an upper surface side and a front surface side and is positioned on the upper surface side of the indoor unit housing; and a front side air filter that is positioned on the front surface side of the indoor unit housing;
Between the upper surface side air filter and the front surface side air filter is horizontally disposed, and the upper surface side air filter and the front surface side air filter are reciprocated toward the front surface side and the upper surface side, respectively. An air filter cleaning unit that removes dust trapped in the upper surface side air filter and the front side air filter,
When the upper surface side air filter moves to the front side of the indoor unit housing or when the front side air filter moves to the upper surface side of the indoor unit housing, the upper surface side air filter or the front side air filter An indoor unit for an air conditioner, wherein at least one of the air conditioner extends outside the indoor unit casing.   A front-side air filter is configured to extend to the outside of the indoor unit housing. The front-side air filter is disposed on the upper surface side of the indoor unit housing. The upper surface side opening which permits the upper end side of the said front side air filter to extend outside the said indoor unit housing | casing along a moving direction when it moves is formed. Air conditioner indoor unit.   It is an upper surface side air filter configured to extend to the outside of the indoor unit housing, and the upper surface side air filter is disposed on the front surface side of the indoor unit housing. The front side opening is formed to allow the front end side of the upper surface side air filter to extend outside the indoor unit housing along the moving direction when moved. Air conditioner indoor unit.   The front side air filter and the top side air filter are configured to extend to the outside of the indoor unit casing. The front side air filter is disposed on the top side of the indoor unit casing. An upper surface side opening that allows the upper end side of the front side air filter to extend outside the indoor unit casing along the moving direction when moved to the upper surface side of the body is formed, Allowing the front end side of the upper surface side air filter to extend outside the indoor unit housing along the moving direction when the upper surface side air filter moves to the front surface side of the indoor unit housing. The indoor unit of the air conditioner according to claim 1, wherein a front side opening is formed.   When the indoor unit casing is provided with a movable panel that covers the air suction port formed on the front side of the indoor unit casing and the front side opening so as to be openable and closable, and cleaning is performed by the air filter cleaning unit. The indoor unit of an air conditioner according to claim 3 or 4, wherein the movable panel moves to a position away from the indoor unit housing.

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