JP6749830B2 - Air conditioner - Google Patents

Description

The present invention relates to an air conditioner, and more particularly to an air conditioner provided with an automatic cleaning function of an air filter.

Conventionally, in an air conditioner, indoor air sucked by a blower fan is cooled or heated by passing through a heat exchanger to be returned to the room, but dust floating in the air is exchanged with the heat exchanger. An air filter is provided on the front side of the heat exchanger in order to prevent air pollution. If dust adheres to this filter and becomes clogged to increase ventilation resistance, heat exchange is hindered, so that the air conditioning capacity of the air conditioner is reduced and power consumption is increased. In order to eliminate such inconvenience, various air conditioners having an automatic filter cleaning function have been proposed.

When cleaning the filter automatically, since the entire surface of the filter is cleaned with the cleaning brush, it is necessary to move at least one of the filter and the cleaning brush.
In the method of moving the filter, a suction port is provided on the upper surface or the front surface of the outer frame, a plate-shaped filter arranged along the inner surface side of the suction port, a moving path for moving the filter, and a moving path for the moving path. The cleaning device includes a cleaning unit disposed on the way to clean the filter, and a transfer unit that moves the filter in the moving route. The moving route is formed along the inner surface side of the suction port and is arranged inside. It is formed by folding back in a U-shape in the space on the front side between the heat exchanger and the normal guide portion for holding the filter in the normal use position, and is connected to one end portion of the normal guide portion and is curved to the curved portion. A rotating brush that is in contact with each other and a dust box that stores dust scraped off by the brush are provided, and by moving the filter, the tip of the filter located at one end of the normal guide part is moved from the normal guide part. There is one that is folded back in a U shape at a curved portion and is automatically cleaned by the brush. (For example, see Patent Document 1)

Further, cleaning means (cleaning brush, dust box, etc.) and filter transfer means (filter winding device, etc.) are provided at the tip of the filter at the upper rear of the outer frame, and the brush is used for automatic cleaning while winding the tip of the filter. There is something. (For example, see Patent Document 2)

Japanese Patent No. 4175409 JP, 2002-5504, A

In these conventional air conditioners, since the dust box has a small volume, the ability to store dust scraped by the filter cleaning is also small, and in order to expand the dust box volume, a large dust box installation space should be provided. Therefore, there is a concern that the overall size of the air conditioner becomes large, the manufacturing cost rises, and the aesthetic appearance is impaired.
In addition, if the dust box is small, the number of times the dust is thrown increases, and even if the filter cleaning is done automatically, the dust throwing work will take place instead of this, which not only reduces the merit to the user but also If the dust box is left without performing the dust dumping work and the dust box is filled with dust, there is a risk that the collected dust may overflow to the filter side or the brush may become entangled and cause a failure.

In order to solve the above problems, in particular, the structure has a frame body including a rear plate, a front cover, and an open panel, a suction port on the upper surface of the frame body, and an outlet on the bottom surface of the frame body. An air blowing path for communicating the air inlet and the air outlet to blow indoor air sucked from the air inlet from the air outlet, a filter provided along an inner surface side of the air inlet of the air inlet, the filter and the air outlet An air conditioner having a heat exchanger provided in a ventilation path between the two, a filter guide plate provided on the back side of the rear plate, a filter cleaning means provided on the upper part of the rear plate, A rear plate is provided behind the filter guide plate, a first space is provided between the rear plate and the filter guide plate, and a second space is provided between the filter guide plate and the rear plate. Is configured to send the filter to the first space to remove dust adhering to the filter, and the second space is configured to be a dust shooter that collects dust removed by the filter cleaning means to the lower part and accumulates the dust. It was done like this.

According to this invention, a dust shooter is provided in the space between the filter guide plate and the back plate, and a large dust collecting space can be secured by accumulating the removed dust under the dust shooter, and the overall size of the air conditioner is relatively small. It can be made smaller and the aesthetics can be improved.
Further, by ensuring a large dust storage space, it is possible to reduce the number of times of dust disposal, and it is possible to prevent the dust from leaking out or malfunctioning due to the dust being filled.

The perspective view of one example of this invention. FIG. FIG. The top view of the same unit frame. The right view of the unit frame. The AA sectional view shown in the same FIG. The front view of the brush. The front view of the filter drive part. The development perspective view of the motor unit. The front view of the back plate. FIG. 11 is a sectional view taken along line BB shown in FIG. 10. The front view of the filter guide plate. FIG. 13 is a sectional view taken along line C-C shown in FIG. 12. The perspective view of the back plate. Sectional drawing of the same back plate. The perspective view of the same front cover. Sectional drawing of the same front cover. The front view of the filter. Schematic of the control circuit.

Next, an embodiment of an air conditioner of the present invention will be described based on the drawings. Reference numeral 1 denotes an indoor unit of a separate type air conditioner, which forms an outer frame 6 with a rear plate 2, a rear plate 3, a front cover 4 and an open panel 5, and the left and right upper parts of the open panel 5 located in front of the front cover 4. It is attached to the front of the front cover 4 in a freely openable and closable manner using a support shaft (not shown) provided at the center as a fulcrum.

The upper surface of the front cover 4 is provided with a suction port 7 in the shape of a horizontally long lattice, and the lower side of the front cover 4 is provided with a laterally long blow-out port 8 for blowing out temperature-adjusted air obliquely forward from the suction port 7. A ventilation path 9 is formed between the outlets 8. A pair of left and right air filters 10 for removing dust mixed in the suction air are provided inside the suction port 7 of the air blowing path 9, and a horizontally long fin tube is provided further inside (downstream) of the air filter 10. The heat exchanger 11 of the formula is provided, and the heat exchanger 11 is arranged in an inverted V shape in a side view with an intermediate portion in the front-rear direction as a top. A blower fan 12 composed of a laterally long cross flow fan is provided below the heat exchanger 11, and a vertical direction of the blown air is adjusted to the air outlet 8 at the time of operation, and when the air is stopped, the air outlet 8 is automatically provided. It has a vertical wind direction plate 13 for closing and a left and right wind direction plate 14 for adjusting the wind direction of the blowing air in the left and right directions.

Reference numeral 15 is a brush unit, which is a brush 19 for automatically cleaning the air filter 10 at the tip of a unit frame 18 which forms the suction port 7 by a horizontal frame 16 and a horizontal frame 17, and an air filter 10. Has a filter drive unit 20 for moving the filter to the back side. Further, the unit frame 18 has left and right end portions 21 protruding at both ends on the rear side, and brush attachment holes 22 are formed in the left and right end portions 21, respectively, and a rotation shaft 23 of the brush 19 is formed in the brush attachment holes 22. When inserted, the brush 19 rotates around the brush mounting hole 22. Further, a pair of slide protrusions 24 are provided on the left and right outer sides in front of the brush mounting holes 22 of the left and right ends 21, and are used as guides when the brush unit 15 is attached and detached. Further, a pair of left and right locking projections 25 are provided on the outside of the front end of the vertical frame 16 and are used as stoppers when the brush unit 15 is attached. Further, a filter driving portion mounting hole 26 is provided in front of the slide protrusion 24 of the vertical frame 16. In addition, slide grooves 27 that serve as guides when the air filter 10 moves are provided on the inner surfaces of the left and right vertical frames 16. Further, at both ends of the brush 19, brush gears 28 for transmitting the rotational force of the brush 19 are provided.

The filter drive unit 20 has a drive shaft 29 made of an aluminum rod and a pair of drive gears 30 penetratingly fixed to both ends of the drive shaft 29. Further, the drive shaft 29 projects outward from the drive gear 30 and is inserted into the filter drive portion mounting hole 26, whereby the filter drive portion 20 rotates around the filter drive portion mounting hole 26.

A motor unit 40 has a brush motor 41 as a drive source of the brush 19 and a feed motor 42 as a drive source of the filter drive unit 20. As the brush motor 41 and the feed motor 42, step motors capable of rotating in the forward and reverse directions are used, and the brush 19 and the filter drive unit 20 are operated in response to a signal from the control unit 43 to automatically clean the filter.

Reference numeral 44 denotes a motor mounting plate. The brush motor 41 and the feed motor 42 are screwed to one surface of the motor mounting plate, and the motor shafts 45 and 46 and the interlocking gears 47 and 48 provided on the other surface of the motor mounting plate 44 are formed in the through holes 49 and Connect by penetrating at 50. Reference numeral 51 denotes a gear cover which covers the interlocking gears 47 and 48 and has shaft holes 52 and 53, and rotatably holds the interlocking gears 47 and 48 between the through holes 49 and 50 and the shaft holes 52 and 53. .. Further, the gear cover 51 is attached to the motor mounting plate 44 by being locked with a claw portion 54 and a locking portion 55 provided at the end of the motor mounting plate 44. Further, the motor unit 40 has fixing holes 56 for screwing the upper left and right ends of the rear plate 2. Further, one set of the motor unit 40 is provided for one air filter 10, and the configuration of the motor unit 40 corresponding to the air filter 10 arranged on the right side is for the right side arrangement which is symmetrical to the configuration described above. The motor unit 40 of FIG.

The rear plate 2 constitutes the rearmost part of the indoor unit 1, and an upper portion of the rear surface is a locking recess 70 for locking an installation plate (not shown) for attaching to a wall surface in the room, and a lower portion of the rear surface is an installation plate. It has a claw portion 71 for fixing with a claw hook. Further, a rear surface 73 of the dust shooter 72 (second space) for sending dust falling from the brush unit 15 and the motor unit 40 side is provided on the front surface side of the rear plate 2, and from this rear surface 73 to the front side. It has a plurality of side walls 74 that stand vertically.

A left motor unit mounting portion 76 for mounting the motor unit 40 is provided between the upper left portion of the side wall 74 and the left outer frame 75 of the rear plate 2, and the motor unit 40 is mounted and screwed in the fixing hole 56 of the motor mounting plate 44. Fix it. Further, a right motor unit mounting portion 78 is provided between the right side upper portion of the side wall 74 and the right outer frame 77, and is similarly screwed and fixed. Further, a fixing column 80 for fixing the filter guide plate 79 in which four columns are erected is provided on the central upper part of the rear surface 73.

A pair of left and right fixing holes 81 are provided on the central upper part of the filter guide plate 79 so as to face the fixing column 80, and the filter guide plate 79 is fixed to the rear plate 2 by screws. The rear surface of the filter guide plate 79 forms a front surface 82 of the dust shooter 72 (second space), and dust falls between the front surface 82 and the rear surface 73.

Reference numeral 83 is a comb tooth provided parallel to the upper end of the filter guide plate 79. The tips of the comb teeth 83 bite into the brush 19 to separate the dust of the air filter 10 scraped off by the brush 19 from the brush 19 to remove dust. It works like dropping it to the 72 side. The tips of the comb teeth 38 protrude toward the direction of the rotation shaft 23 of the brush 19, and the bite amount of the brush 19 can be adjusted by varying the distance between the brush 19 and the comb teeth 83 according to the bristles amount and rigidity of the brush 19. .. Reference numeral 84 is a side plate provided at the left and right ends of the filter guide plate 79 so as to project toward the rear plate 3, and has guide grooves 85 through which the left and right ends of the air filter 10 slide when cleaning the filter. Further, when cleaning the filter, the filter 10 slides vertically in the filter path 86 (first space) which is a space between the rear plate 3 and the filter guide plate 79.

Two U-shaped openings 87 for attaching the brush unit 15 are provided in the upper portion of the rear plate 3, and grooves 88 for guiding the slide protrusions 24 of the brush unit 15 are provided on the inner right and left sides of the openings 87. Reference numeral 89 denotes a rear drain pan, in which the rear portion of the heat exchanger 11 is disposed above and the condensed water generated from the rear portion of the heat exchanger 11 is accumulated and discharged during the cooling operation. Reference numeral 90 denotes a casing, which is provided with the blower fan 12 in front of the casing with a predetermined space therebetween. The blower fan 12 is a cross-flow type fan having a horizontally long cylindrical shape and a large number of blades, and includes a bearing (not shown) attached to the left side surface 91 of the casing 90 and a blower motor 93 attached to the right side of the right side surface 92 of the casing 90. It rotates in the vertical direction between itself and the rotating shaft 94. Reference numeral 95 is a mounting hole provided in the left and right end portions and in the upper and lower portions of the center. The mounting hole 95 penetrates through the mounting hole 95 and is fixed to the rear plate 2 by a screw. Reference numeral 97 designates a pair of front cover mounting pieces provided on the left and right of the upper surface of the rear plate 3, and has a protrusion 98 for engaging in the upward direction at the tip portion.

A front drain pan 99 has a front portion of the heat exchanger 11 arranged above the front drain pan, and collects and discharges condensed water generated from the front portion of the heat exchanger 11 during cooling operation. Further, mounting legs (not shown) are provided at the left and right ends of the front drain pan 99, and the mounting legs are fitted into the rear plate 3 to be mounted.

Reference numeral 100 denotes a dust box which is detachably attached from below to a dust discharge port 101 provided at the bottom of the dust shooter 72 on the bottom surface of the rear plate 3. The air filter 10 has a sufficient capacity to store dust generated by automatic cleaning of the air filter 10 for several months to one year. A pair of front cover mounting holes 102 are provided at the left and right ends of the lower portion of the rear plate 3, and fix the lower portion of the front cover 4 with screws.

The front cover 4 includes an upper frame 112 connecting an upper surface between the left side plate 110 and the right side plate 111, a lower frame 113 connecting a bottom surface, a front frame 114 connecting a lower side from the center of the front surface, and an upper frame at a substantially center in the left-right direction. It has a central frame 115 that vertically connects the frame 112 and the front frame 114. Inside the upper part of the left side plate 110 and the center frame 115, there are provided a groove 116 continuous with the groove 88 of the rear plate 3 and a U-shaped locking portion 117 in front of this groove 116. Guides the slide protrusion 24 of the brush unit 15 and pulls it downward while the brush unit 15 is in contact with the rearmost portion, so that the locking protrusion 25 of the brush unit 15 fits into the U-shaped locking portion 117. The brush unit 15 can be set.

Reference numeral 118 denotes a filter groove provided below the groove 116, which is continuously connected to the slide groove 27 of the brush unit 15 and holds the left and right ends of the air filter 10. A filter insertion portion 119 is provided at the lower end of the filter groove 118, and when the air filter 10 having a rectangular shape and flexibility is inserted from the filter insertion portion 119 to the brush 19 and the filter driving portion 20 in the normal state of the filter 10. Set to (position when air conditioner is operating). Reference numeral 120 denotes a mounting hole penetrating the upper surfaces of the left side plate 110 and the right side plate 111, and the projection 98 at the tip of the front cover mounting piece 97 of the rear plate 3 is locked to fix the upper portion of the front cover 4. After the upper portion of the front cover 4 is locked, the lower portion of the front cover 4 is screwed and fixed to the rear plate 3 by a lower mounting hole (not shown). The air outlet 8 is formed between the front frame 114 and the lower frame 113, and a reinforcing frame 121 for vertically reinforcing the front frame 114 and the lower frame 113 is provided substantially at the center of the air outlet 8 in the left-right direction. The lower frame 113 at the bottom has a left and right wind direction plate 122 rotatably attached. Further, the side wall 123 of the outlet 8 is provided with a vertical wind direction plate 123 so as to be rotatable.

The air filter 10 has a rectangular shape and is provided by welding a resin net 126 to a large number of vertical bars 124 and horizontal bars 125, and racks 127 that mesh with the drive gears 30 of the filter drive unit 20 on the vertical bars 124 at both ends. have. During cleaning of the filter, the filter 10 passes between the drive gear 30 and the brush 19 by the rotation of the drive gear 30 and is sent toward the filter guide plate 79. Further, when passing between the drive gear 30 and the brush 19, the brush 19 removes dust adhering to the surface of the air filter 10. The filter cleaning means includes a drive gear 30 that engages with the rack 127 and sends the filter 10 to the filter guide plate 79 side, a feed motor 42 that rotates the drive gear 30, and a brush 19 that removes dust adhering to the surface of the filter 10. , A brush motor 41 for rotating the brush 19, and a comb tooth portion 83 for scraping dust adhering to the brush 19 toward the dust shooter side.

The open panel 5 is provided rotatably around a pair of locking shafts (not shown) provided on the upper left and right ends of the front cover 4 so as to be rotatable around locking portions (not shown). Both lower ends of 5 are locked and fixed to the front frame 114 of the front cover-4.

The control unit 43 includes an operation unit 128 having switches such as an operation switch (not shown) and a timer switch (not shown) on the input side, a room temperature sensor 129, a humidity sensor 130, and a heat exchange sensor 131. Alternatively, a filter sensor 132 or the like which is mounted on the filter path 86 (first space) of the filter guide plate 79 and detects the position of the filter 10 is connected. Further, on the output side of the control unit 43, the blower motor 93, an outdoor signal line 133 connected to an outdoor unit (not shown) which is a heat source device, a brush motor 41 having two sets on the left and right, a feed motor 42, etc. Are connected. The filter sensor 132 is a pressing type micro switch that detects the arrival of the tip of the filter 10.

The assembly procedure of the indoor unit 1 will be described. First, the motor unit 40 is assembled into the left motor unit mounting portion 76 and the right motor unit mounting portion 78 of the rear plate 2 and screwed. Next, the filter guide plate 79 is fixed to the front of the rear plate 2 by screwing the fixing column 80 of the rear plate 2 in four fixing holes 81 of the filter guide plate 79.

Next, the rear plate 3 is attached further in front of the filter guide plate 79. The rear plate 3 is fixed to the rear plate 2 by passing through the mounting holes 95 of the rear plate 3 to the mounting ribs 96 provided upright on the rear plate 2 and fixing the rear plate 3 with screws at six positions. Next, in front of the casing 90, the blower fan 12 is fixed together with the bearing and the blower motor 93 so that the blower fan 12 is located between the left side surface 91 and the right side surface 92. Next, after attaching the front drain pan 99 to the front of the blower fan 12, the heat exchanger 11 is attached across the front drain pan 99 and the rear drain pan 89. Further, the dust box 100 is attached to the dust discharge port 101 on the bottom surface of the rear plate 3 from below.

Next, attachment of the front cover 4 to the rear plate 3 will be described. First, the projections 98 of the front cover mounting pieces 97 provided on the left and right upper ends of the rear plate 3 are locked in the mounting holes 120 provided on the left and right upper ends of the front cover-4. Next, the front cover 4 is rotated as a whole in the locked state of the mounting hole 120 to bring the front cover 4 into close contact with the rear plate 3, and a pair of mounting holes (not shown) are provided at both lower ends of the front cover 4. It penetrates and is screwed and fixed to the front cover mounting hole 102 of the rear plate 3.

Next, the slide protrusions 24 provided on the left and right sides of the front surface of the front cover 4 for the brush unit 15 are slid rearward along the grooves 116 of the front cover 4 and guided to the grooves 88 of the rear plate 3 which are continuous from the grooves 116. When the unit 15 hits the rearmost portion and is pulled down, the locking projection 25 of the brush unit 15 fits into the U-shaped locking portion 117 of the front cover 4, and the brush unit 15 is set.

Next, the air filter 10 is inserted from the filter insertion portion 119. The tip of the filter 10 abuts the position of the brush 19 and the filter drive unit 20 from the filter groove 118 through the slide groove 27 of the unit frame 18, and the setting of the filter 10 is completed. This position is the filter position during normal operation of the indoor unit. Next, the open panel 5 is locked and attached to the upper frame 112 and the front frame 114 of the front cover 4 to complete the assembly of the indoor unit 1.

The operation of the automatic cleaning operation of the filter 10 will be described. When the indoor unit performs an air conditioning operation, dust in the air floating in the room is mixed with the suction air and accumulates in the filter 10. When the operation time is long, the accumulated dust increases and the heat exchange efficiency of the heat exchanger 11 decreases. It is necessary to clean the filter 10 before doing so. The control unit 43 determines the cumulative operation time and other cleaning timing, and starts the automatic cleaning operation of the filter 10. The brush motor 41 and the feed motor 42 start rotating, the rotational force of each motor is transmitted to the brush gear 28 and the drive gear 30, and the brush 19 and the filter drive unit 20 start rotating. The rack 127 of the filter 10 meshes with the rotation of the filter driving unit 20, and the filter 10 is gradually drawn toward the rear filter path 86 (first space) side. Along with this, the brush 19 rotates to remove dust accumulated on the upper surface side of the filter 10. The dust attached to the brush 19 is scraped off by the comb teeth 83 of the filter guide plate 79 toward the dust shooter 72 side, falls inside the dust shooter 72, and accumulates in the dust box 100.

When the tip of the filter 10 reaches the position of the filter sensor 132 provided at the lower end of the filter path 86, the feed motor 42 reverses to reverse rotation, and the filter 10 returns to the filter insertion portion 119 side of the front cover 4. At this time, since the brush motor 41 continues to rotate in the normal rotation, dust on the brush 19 and the comb teeth 83 does not return. By repeating such a reciprocating operation (cleaning operation) of the filter 10 several times, the filter 10 can be surely cleaned. Then, the normal air conditioning operation is repeated until the next automatic cleaning timing comes. The interval of automatic cleaning operation can be set not only for the total time, but simply for various times such as time of day and day of the week. If a manual cleaning button is provided on the operation unit 128 or a remote controller (not shown), the user can manually perform the cleaning operation. The dust collected in the dust box 100 is removed by removing the dust box 100 downward from the dust discharge port 101 of the rear plate 3.

By doing so, the dust disposal work is carried out as needed every few months or once a year, etc., but the removed dust can be collected under the dust shooter 100 to secure a large dust storage space, and air conditioning The overall size of the machine can be made relatively small and the aesthetics can be improved. Further, by ensuring a large dust collecting space, the number of times of dust disposal can be reduced, and it is possible to prevent dust from leaking out or malfunctioning due to the dust being filled.

In addition, since the deformation angle before and after the filter 10 passes between the brush 19 and the filter drive 20 is relatively small, the filter 10 is less likely to be damaged, and thus the failure of the filter 10 being cut or broken can be reduced. it can. Further, by providing the filter guide plate 79 between the rear plate 2 and the rear plate 3, it is possible to ensure the filter path 86, so that the filter 10 can be moved very smoothly during the automatic cleaning operation.

2 Back plate 3 Rear plate 4 Front cover 5 Open panel 10 Air filter 11 Heat exchanger 12 Blower fan 15 Brush unit 19 Brush 20 Filter drive unit 40 Motor unit 72 Dust shooter (Second space)
79 filter guide plate 86 filter path (first space)
100 dust box 101 garbage outlet

Claims (3)

It has a frame body with a rear plate, a front cover and an open panel,
A suction port on the upper surface of the frame body,
An outlet on the bottom surface of the frame,
An air blowing path that communicates the suction port and the air outlet and blows indoor air sucked from the suction port from the air outlet,
A filter provided along the inner surface side of the suction port of the air blowing path,
In an air conditioner having a heat exchanger provided in a ventilation path between the filter and the outlet,
A filter guide plate provided on the back side of the rear plate,
Filter cleaning means provided on the upper portion of the rear plate,
A rear plate behind the filter guide plate,
Having a first space between the rear plate and the filter guide plate,
A second space is provided between the filter guide plate and the back plate,
The filter cleaning means is configured to send the filter to the first space to remove dust adhering to the filter.
The second space is composed of a dust shooter that collects the dust removed by the filter cleaning means by dropping it downward .
An air conditioner comprising a dust outlet on the bottom surface of a rear plate communicating with the dust shooter, and a detachable dust box at the outlet . Racks are provided at the left and right ends of the filter,
The filter cleaning means is
A drive gear that engages with the rack and sends the filter to the first space side;
A feed motor that rotates the drive gear, and a brush that removes dust adhering to the surface of the filter,
A brush motor for rotating the brush,
And a comb tooth portion for scraping dust attached to the brush to the dust shooter side,
By rotation of the feed motor and the brush motor, wherein the filter when passing through the filter cleaning unit in this order from the end, dust adhering to the filter surface is removed with a brush, the removed dust is the at comb teeth The air conditioner according to claim 1, wherein the air conditioner is sent to a dust box. It has a frame body with a rear plate, a front cover and an open panel,
A suction port on the upper surface of the frame body,
An outlet on the bottom surface of the frame,
A ventilation path that communicates the suction port and the air outlet and blows the indoor air sucked from the suction port from the air outlet,
A filter provided along the inner surface side of the suction port of the air blowing path,
In an air conditioner having a heat exchanger provided in a ventilation path between the filter and the outlet,
A filter guide plate provided on the back side of the rear plate,
Filter cleaning means provided on the upper portion of the rear plate,
A rear plate behind the filter guide plate,
Having a first space between the rear plate and the filter guide plate,
A second space is provided between the filter guide plate and the back plate,
The filter cleaning means has at least a brush for removing dust adhering to the surface of the filter, and a comb tooth portion for scraping off dust adhering to the brush, and sends the filter to the first space to attach it to the filter. Configured to remove dust,
The second space is composed of a dust shooter that collects dust removed by the filter cleaning means to a lower portion and accumulates the dust.
The upper end of the filter guide plate is located directly below the brush,
The air conditioner, wherein the comb tooth portion is provided at an upper end of the filter guide plate and at a position near the second space.

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