JP6840048B2 - 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 it through a heat exchanger and returned to the room, but dust floating in the air is returned to the heat exchanger. An air filter is installed on the wind side of the heat exchanger to prevent it from contaminating the heat exchanger. When dust adheres to the air filter to cause clogging and increase the ventilation resistance, heat exchange is hindered, so that the air conditioning capacity of the air conditioner is reduced and the power consumption is increased. In order to eliminate such inconvenience, various air conditioners having an automatic cleaning function of the air filter have been proposed.

When cleaning the air filter automatically, it is necessary to move at least one of the air filter and the cleaning brush in order to clean the entire surface of the air filter with the cleaning brush.
In the method of moving the air filter, a moving path for moving the air filter is provided, a transfer means for moving the air filter is provided in the middle of the moving path, and the moving path is U-shaped in the space in front of the heat exchanger. The air filter is moved by providing a rotating brush in contact with the movement path and a filter cleaning device such as a dust box that stores the dust scraped off by this brush in the space in front of the heat exchanger. Some filter cleaning devices perform automatic cleaning. (See, for example, Patent Document 1)

In addition, some cleaning means (cleaning brush, dust box, etc.) are moved to the entire surface of the air filter to perform automatic cleaning.
In addition, there is a method in which a cleaning means and a filter transfer means (filter winding device, etc.) are provided at the tip of an air filter at the upper rear of the outer frame, and automatic cleaning is performed by a brush while winding the filter tip. (See, for example, Patent Document 2)

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

In these conventional air conditioners, since the volume of the dust box is small, the ability to store the dust scraped off by cleaning the filter is also small, and in order to increase the volume of the dust box, a large installation space for the dust box is provided. For example, there is a concern that the overall size of the air conditioner will increase, the manufacturing cost will increase, and the appearance will be spoiled.
In addition, if the dust box is small, the number of times of dust disposal increases, and even if the filter cleaning is automatic, the dust disposal work will occur instead of this, which not only reduces the benefit to the user, but also reduces the user's benefit. However, if the dust box is left undisturbed and the dust box is filled with dust, there is a risk that the collected dust will overflow to the air filter side or get entangled with the brush and cause a malfunction.
In addition, the dust box is stored inside the air conditioner, and it is necessary to open and remove the cover that covers the front surface in order to dispose of dust, and this type of air installed in a relatively high place indoors. In the air conditioner, it became a difficult task to use a stepping stone, and it was required to make the garbage disposal work easier.

In order to solve the above problems, in particular, the configuration includes a frame body provided with a rear plate, a front cover, and an open panel, a suction port on the upper surface of the frame body, and an air outlet on the bottom surface of the frame body. An air filter that communicates the suction port and the air outlet and blows indoor air sucked from the suction port from the air outlet, an air filter provided along the inner surface side of the suction port of the air passage, and the air filter. In an air conditioner having a heat exchanger provided in an air passage between air outlets, a filter guide plate provided on the back side of the rear plate and a filter cleaning means provided on the upper part of the rear plate. the a back plate behind the filter the guide plate comprises, has a first space between the back plate and the filter guide plate, a second space on the back plates and the filter guide plate, wherein the filter The cleaning means is configured to send the air filter to the first space to remove dust adhering to the air filter, and in the second space, dust removed by the filter cleaning means is dropped to the lower part and accumulated. It is composed of a shooter, has a dust discharge port on the bottom surface of the dust shooter, has a removable dust box at the discharge port, and is said to be inside the dust shooter above the discharge port when the dust box is removed. It is equipped with a damper that closes the dust shooter.

According to the present invention, a dust shooter is provided in the space between the filter guide plate and the back plate, and by collecting the removed dust in the lower part of the dust shooter, a large dust collecting space can be secured and the overall size of the air conditioner is relatively large. It can be made smaller and the aesthetics can be improved.
In addition, by securing a large garbage storage space, it is possible to reduce the number of times of garbage disposal work, and it is possible to prevent the leakage and failure of garbage caused by the filling of garbage.
In addition, since the dust box can be directly removed from the bottom surface of the indoor unit, the work of disposing of dust can be made extremely easy.
Further, when the dust box is pulled out when the dust is thrown away and the dust discharge port is opened, it is possible to prevent the dust remaining in the dust shooter from falling into the room from the discharge port.

A perspective view of an embodiment of the present invention. Sectional view of the whole. The same development perspective view. Top view of the unit frame. Right side view of the unit frame. FIG. 4 is a cross-sectional view taken along the line AA shown in FIG. Front view of the brush. Front view of the filter drive unit. Expanded perspective view of the motor unit. Front view of the back plate. FIG. 10 is a cross-sectional view taken along the line BB shown in FIG. Front view of the filter guide plate. Right side view of the filter guide plate. A perspective view of the rear plate. Sectional view of the rear plate. A perspective view of the front cover. Sectional view of the front cover. Front view of the air filter. A perspective view of the damper. A perspective view of the dust box. An enlarged cross-sectional view of the dust box with the dust box removed. Schematic diagram of the control circuit.

Next, in the embodiment of the air conditioner of the present invention, a configuration incorporating a filter cleaning function will be described with reference to the drawings. Reference numeral 1 denotes an indoor unit of a separate air conditioner, in which a frame body 6 is formed by a back plate 2, a rear plate 3, a front cover 4, and an open panel 5, and the upper left and right of the open panel 5 located in front of the front cover 4. It can be opened and closed in front of the front cover 4 with a support shaft (not shown) provided in the above as a fulcrum.

A horizontally long grid-like suction port 7 is provided on the upper surface of the front cover 4, and a horizontally long air outlet 8 for blowing out temperature-controlled air diagonally forward is provided on the bottom surface from below the front cover 4, and blows from the suction port 7. A ventilation path 9 is formed between the outlets 8. Inside the suction port 7 of the air passage 9, a pair of left and right air filters 10 for removing dust mixed in the suction air are provided, and further inside (downstream side) of the air filter 10 is a horizontally long fin tube. The heat exchanger 11 of the type is provided, and is arranged in an inverted V shape in a side view with the intermediate portion in the front-rear direction as the apex. Further, below the heat exchanger 11, a blower fan 12 composed of a horizontally long cross-flow fan is provided, and at the outlet 8, the wind direction of the blown air in the vertical direction is adjusted during operation, and the outlet 8 is automatically stopped when stopped. 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 blown wind in the left-right direction.

Reference numeral 15 denotes a brush unit, which is a brush 19 for automatically cleaning the air filter 10 at the tip of the unit frame 18 forming the suction port 7 with the horizontally long grid-shaped vertical frame 16 and the horizontal frame 17, and the 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 from both ends on the rear side, brush mounting holes 22 are formed in the left and right end portions 21, respectively, and the rotation shaft 23 of the brush 19 is provided in the brush mounting holes 22. By inserting the brush 19, the brush 19 rotates about the brush mounting hole 22. Further, it has a pair of slide protrusions 24 on the left and right outside in front of the brush mounting holes 22 of the left and right end portions 21, and is used as a guide when attaching and detaching the brush unit 15. 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 a stopper when the brush unit 15 is attached. Further, a filter drive portion mounting hole 26 is provided further in front of the slide protrusion 24 of the vertical frame 16. Further, the inner side surfaces of the left and right vertical frames 16 are provided with slide grooves 27 that serve as guides when the air filter 10 moves. Further, both ends of the brush 19 have brush gears 28 that transmit the rotational force of the brush 19.

The filter drive unit 20 has a drive shaft 29 made of an aluminum rod and a pair of drive gears 30 penetrating and fixed at 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 unit mounting hole 26, so that the filter drive unit 20 rotates about the filter drive unit mounting hole 26.

Reference numeral 40 denotes a motor unit, which includes a brush motor 41 as a drive source for the brush 19 and a feed motor 42 as a drive source for the filter drive unit 20. The brush motor 41 and the feed motor 42 use a step motor that can rotate in the forward and reverse directions, and operate the brush 19 and the filter drive unit 20 in response to a signal from the control unit 43 to automatically clean the air filter 10.

Reference numeral 44 denotes a motor mounting plate. The brush motor 41 and the feed motor 42 are screwed to the right side surface, and the interlocking gears 47 and 48 provided on the motor shafts 45 and 46 and the left side surface are provided through the through holes 49 and the motor mounting plate 44. It penetrates at 50 and connects. Reference numeral 51 denotes a gear cover, which covers the interlocking gears 47 and 48 and is provided with 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 locked to the motor mounting plate 44 by being locked by 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 to the upper left and right ends of the back plate 2. Further, one set of motor units 40 is provided for one air filter 10, and each is arranged on the upper right side of the air filter 10.

The back plate 2 constitutes the rearmost portion of the indoor unit 1, and has a locking recess 70 as a locking means for locking to an installation plate (not shown) for mounting on the wall surface of the room in the upper part of the back surface, and a locking recess 70 in the lower part of the back surface. Has a claw portion 71 for fixing to the installation plate by hooking the claw. Further, on the front side of the back plate 2, a pair of left and right dust shooters 72 (second space) for sending dust falling from the brush unit 15 and the motor unit 40 side downward are provided in front of the back plate 2. ..
73 is the rear surface of the dust shooter 72 provided on the left and right sides of the back plate 2, and includes a left rear surface 73L corresponding to the left dust shooter 72 and a right rear surface 73R corresponding to the right dust shooter 72. Each has a dust shooter side wall A74 that stands vertically from the left and right to the front side. Reference numeral 75 denotes a left outer frame forming a part of the left side surface of the outer frame 6. Further, a pair of left and right tongue pieces (not shown) are provided on the upper part of the installation plate, and the upper part of the back plate 2 is locked by inserting the tongue pieces (not shown) into the locking recess 70. Further, a pair of left and right locking pieces (not shown) are projected forward from the lower part of the installation plate and locked to fix the lower part of the back plate 2 to the installation plate.

Between the left rear surface 73L and the right rear surface 73R, a left motor unit mounting portion 76 corresponding to the left dust shooter 72 and mounting the motor unit 40 is provided at a substantially central upper portion of the back plate 2, and the left motor unit is mounted. The motor unit mounting hole 60 formed in the portion 76 is screwed and fixed to the fixing hole 56 of the motor unit 40. Further, a right motor unit mounting portion 78 is provided between the right upper part of the right dust shooter 72 and the right outer frame 77, and the motor unit 40 is similarly screwed and fixed. Further, two cylinders are erected from the rear surface 73 at the substantially center of the dust shooter 72, and have a fixing cylinder 80 for fixing the filter guide plate 79. Further, a recess 63 for attaching the rotating shaft 62 of the damper 61 that opens and closes the dust shooter 72 is provided below the dust shooter side wall A74.

A fixing hole 81 is provided in the upper part of the center of the filter guide plate 79 so as to face the fixing cylinder 80 of the back plate 2, and the filter guide plate 79 is screwed and fixed to the back plate 2. Further, the back 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 denotes a comb tooth provided parallel to the upper end of the filter guide plate 79. The tip of the comb tooth 83 bites into the brush 19, and the dust of the air filter 10 scraped off by the brush 19 is separated from the brush 19 and dust shooter. It works to drop it to the 72 side. The tip of the comb tooth 83 protrudes toward the rotation axis 23 of the brush 19, and the amount of bite of the brush 19 can be adjusted by varying the distance between the brush 19 and the comb tooth 83 according to the amount of bristles and the rigidity of the brush 19. ..

Reference numeral 84 denotes a dust shooter side wall B, which projects in both the back plate 2 directions and the rear plate 3 directions.
When assembling the filter guide plate 79 to the back plate 2, the filter guide plate 79 comes into contact with the outside of the dust shooter side wall A74 and acts as a positioning guide for the filter guide plate 79. Further, in the lower part of the dust shooter side wall B84, a recess 64 facing the recess 63 of the back plate 2 is formed. As a result, a shaft hole 65 of the rotating shaft 62 of the damper 61 is formed in the recess 63 and the recess 64, and the damper 61 rotates around the shaft hole 65 to open and close the dust shooter 72. Further, the dust shooter side wall B84 has a guide groove 85 in which the left and right ends of the air filter 10 slide when the filter is cleaned by projecting in an L shape in the rear plate three directions. Further, when cleaning the filter, the air filter 10 slides in the vertical direction in the filter path 86 (first space), which is the space between the rear plate 3 and the filter guide plate 79.

Two U-shaped upper surface openings 87 for attaching the brush unit 15 are provided on 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 left and right inner side surfaces of the upper surface openings 87. Have. Reference numeral 89 denotes a rear drain pan, the rear portion of the heat exchanger 11 is arranged above, and condensed water generated from the rear portion of the heat exchanger 11 is accumulated and drained during the cooling operation. Reference numeral 90 denotes a casing, and the blower fan 12 is provided in front of the casing with a predetermined space in between. The blower fan 12 is a cross-flow type fan having a horizontally long columnar shape and a large number of blades. 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. Rotates in the vertical direction with the rotation shaft 94 of. Reference numeral 95 denotes mounting holes provided at the left and right ends and above and below the center, and the mounting holes 95 are penetrated through the mounting ribs 96 and the like erected on the back plate 2 and fixed by screws. Reference numeral 97 denotes a pair of front cover mounting pieces provided on the left and right sides of the upper surface of the rear plate 3, and the tip portion has protrusions 98 for locking upward.

Reference numeral 99 denotes a front drain pan, in which the front portion of the heat exchanger 11 is arranged above, and the condensed water generated from the front portion of the heat exchanger 11 is accumulated and drained during the 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 for mounting.

Reference numeral 100 denotes a dust box, which is detachably attached from below to a dust discharge port 101 provided on the lower surface of the dust shooter 72 on the bottom surface of the rear plate 3. Reference numeral 102 denotes a side plate of the dust box 100, which has a protrusion 103 that projects upward from the side plate 102 and pushes up the damper 61. When the dust box 100 is attached to the discharge port 101, the protrusion 103 pushes up the damper 61 to open the dust shooter 72, and dust falling in the dust shooter 72 collects in the dust box 100, and the dust box 100 is used for dust disposal work. When removed as shown in FIG. 21, when the protrusion 103 is separated from the damper 61, the damper 61 rotates due to its own weight to close the dust shooter 72, so that dust is removed from the opened discharge port 101. Prevents the fall. A spring or the like for urging the damper 61 in the closing direction may be provided. As a result, it is possible to prevent dust that has stagnated in the upper part of the dust shooter 72 from falling from the discharge port 101 due to vibration or the like when the dust box 100 is removed and polluting the room. Further, the dust box 100 has a sufficient volume for storing dust generated by the automatic cleaning of the air filter 10 for several months to one year. Reference numeral 104 denotes a pair of front cover mounting holes provided at the left and right ends of the lower portion of the rear plate 3, and the lower portion of the front cover 4 is fixed by screwing.

The front cover 4 has an upper frame 112 connecting the upper surface between the left side plate 110 and the right side plate 111, a lower frame 113 connecting the bottom surface, a front frame 114 connecting the lower part from the center of the front surface, and an upper frame substantially in the center in the left-right direction. It includes 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 central frame 115, a groove 116 continuous with the groove 88 of the rear plate 3 and a U-shaped locking portion 117 in front of the groove 116 are provided, and the grooves 88 and 116 are provided. Guides the slide protrusion 24 of the brush unit 15 and pulls it downward with the brush unit 15 abutting at 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 square and flexible air filter 10 is inserted from the filter insertion portion 119 to the brush 19 and the filter drive portion 20 by the tip of the air filter 10, the air filter 10 is inserted. It is set to the normal state (position when the air conditioner is operating). Reference numeral 120 denotes a mounting hole provided through the upper surfaces of the left side plate 110 and the right side plate 111, and the protrusion 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 locking the upper part of the front cover 4, the lower part of the front cover 4 is screwed and fixed to the rear plate 3 with a lower mounting hole (not shown). The outlet 8 is formed between the front frame 114 and the lower frame 113, and a reinforcing frame 121 that vertically reinforces the front frame 114 and the lower frame 113 is provided at substantially the center of the outlet 8 in the left-right direction. The lower frame 113 at the bottom has a left-right wind direction plate 122 rotatably attached. Further, a vertical wind direction plate 123 is rotatably provided on the side wall of the air outlet 8.

The air filter 10 has a rectangular shape and is provided by welding a resin net 126 to a large number of vertical rails 124 and horizontal rails 125. The vertical rails 124 at both ends are rack 127 that mesh with the drive gear 30 of the filter drive unit 20. have. When cleaning the filter, the rotation of the drive gear 30 causes the air filter 10 to pass between the drive gear 30 and the brush 19 and be sent in the direction of the filter guide plate 79. Further, when passing between the drive gear 30 and the brush 19, dust adhering to the surface of the air filter 10 is removed by the brush 19. The filter cleaning means includes a drive gear 30 that engages with the rack 127 and sends the air filter 10 to the filter guide plate 79 side, a feed motor 42 that rotates the drive gear 30, and a brush that removes dust adhering to the surface of the air filter 10. It is composed of 19, a brush motor 41 that rotates the brush 19, and a gear tooth portion 83 that scrapes off dust adhering to the brush 19 to the dust shooter 72 side.

The open panel 5 is rotatably provided around a locking portion (not shown) facing a pair of locking shafts (not shown) provided on the upper left and right ends of the front cover-4, and is an open panel. Both ends of the lower portion 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 mounted on the filter path 86 (first space) of the filter guide plate 79 and detecting the position of the air 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 machine, a brush motor 41 provided with two sets on the left and right, a feed motor 42, etc. Is connected. The filter sensor 132 detects that the tip of the air filter 10 reaches the end of the filter path 86 with a pressing type microswitch.

The procedure for assembling 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 back plate 2, and screwed. Next, the rotating shafts 62 of the pair of left and right dampers 61 are set in the recesses 63 of the dust shooter side wall A74. Next, the filter guide plate 79 is fixed to the front of the back plate 2 by screwing it to the fixing cylinder 80 of the back plate 2 at two places with the fixing holes 81 of the filter guide plate 79. As a result, the rotating shaft 62 is formed in the shaft hole 65 formed by the recess 63 of the dust shooter side wall A74 formed in the back plate 2 and the recess 64 of the dust shooter side wall B84 formed in the filter guide plate 79 facing each other. It is configured to be rotatable.

Next, the rear plate 3 is attached further in front of the filter guide plate 79. The rear plate 3 is fixed to the back plate 2 by penetrating the mounting holes 95 of the rear plate 3 through the mounting ribs 96 erected on the back plate 2 and fixing them with screws at six places. Next, 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 in front of the casing 90. Next, after the front drain pan 99 is attached 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. As a result, the protrusion 103 provided on the dust box 100 pushes up the damper 61 to open the dust shooter 72, and the dust falling from the brush 19 side passes through the damper 61 and accumulates in the dust box 100.

Next, attachment of the front cover 4 to the rear plate 3 will be described. First, the protrusions 98 of the front cover mounting piece 97 provided on the left and right upper ends of the rear plate 3 are locked to the mounting holes 120 provided on the left and right upper ends of the front cover-4. Next, in the locked state of the mounting holes 120, the entire front cover 4 is rotated so that the front cover 4 is brought into close contact with the rear plate 3, and a pair of mounting holes (not shown) provided at both lower ends of the front cover 4 are provided. It penetrates and is fixed to the front cover mounting hole 104 of the rear plate 3 by screwing.

Next, the slide protrusions 24 provided with the brush unit 15 from the front to the left and right of the front cover 4 are slid rearward along the groove 116 of the front cover 4, guided to the groove 88 of the rear plate 3 connected to the groove 116, and brushed. By pulling down the unit 15 with the unit 15 abutting against the rearmost portion, 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 section 119. The tip of the air filter 10 abuts from the filter groove 118 to the position of the brush 19 and the filter drive unit 20 via the slide groove 27 of the unit frame 18, and the setting of the air filter 10 is completed. This position is the filter position during normal operation of the indoor unit. Next, if the open panel 5 is locked and attached to the upper frame 112 and the front frame 114 of the front cover-4, the assembly of the indoor unit 1 is completed.

The operation of the automatic cleaning operation of the air filter 10 will be described. When the indoor unit performs air-conditioning operation, dust in the air floating in the room is mixed with the suction air and accumulated in the air filter 10. The amount of dust that accumulates increases as the operation time becomes longer, and the amount of air passing through the ventilation path 9 The air filter 10 needs to be cleaned before the heat exchange efficiency of the heat exchanger 11 decreases. The control unit 43 determines the integrated operation time and other cleaning timings, and starts the automatic cleaning operation of the air filter 10. The brush motor 41 and the feed motor 42 start to rotate, 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 to rotate. The rotation of the filter drive unit 20 causes the rack 127 of the air filter 10 to mesh with each other, and the air filter 10 is gradually pulled toward the rear filter path 86 (first space). Along with this, the brush 19 rotates to remove dust accumulated on the upper surface side of the air filter 10. The dust adhering to the brush 19 is compressed toward the dust shooter 72 by the comb teeth 83 of the filter guide plate 79 and scraped off, falls inside the dust shooter 72, and accumulates in the dust box 100.

When the tip of the air 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 in reverse rotation, and the air filter 10 returns to the filter insertion portion 119 side of the front cover 4. At this time, the brush motor 41 continues to rotate in the normal rotation, so that the dust on the brush 19 and the comb teeth 83 does not return. By repeating such a reciprocating operation (cleaning operation) of the air filter 10 several times, dust accumulated on the air filter 10 can be removed and the air filter 10 can be reliably cleaned. Then, the normal air-conditioning operation is repeated until the timing of the next automatic cleaning comes. The interval of the automatic cleaning operation can be set not only by the integrated time but also by simply setting the time and the day of the week. Further, if the operation unit 128 or the remote controller (not shown) is provided with a manual cleaning button, the user can manually perform the cleaning operation. The dust collected in the dust box 100 is collected by removing the dust box 100 downward from the dust discharge port 101 of the rear plate 3. When the dust box 100 is removed for dust disposal work, the protrusion 103 separates from the damper 61, the damper 61 rotates due to its own weight, and the dust shooter 72 is closed, so that dust is discharged from the opened discharge port 101. Prevent it from falling. As a result, it is possible to prevent dust that has stagnated in the upper part of the dust shooter 72 from falling from the discharge port 101 due to vibration or the like when the dust box 100 is removed and polluting the room.

By doing so, the garbage disposal work is performed as needed, such as once every few months or a year, but the removed garbage can be accumulated in the lower part of the dust shooter 100, a large garbage storage space can be secured, and air conditioning can be achieved. The overall dimensions of the machine can be made relatively small, and the aesthetics can be improved. In addition, by securing a large garbage storage space, it is possible to reduce the number of times of garbage disposal work, and it is possible to prevent the leakage and failure of garbage caused by the filling of garbage.

Further, since the dust box 100 can be directly removed from the bottom surface of the indoor unit, the work of disposing of dust can be extremely easily performed. Further, when the dust box is pulled out when the dust is thrown away and the dust discharge port 101 is opened, it is possible to prevent the dust remaining in the dust shooter 72 from falling into the room from the discharge port. Further, the shaft hole 65 of the damper 61 is assembled by providing contact portions (recesses 63 and recesses 64) between the dust shooter side wall A74 formed on the back plate 2 and the dust shooter side wall B84 formed on the filter guide plate 79. Work becomes easier and manufacturing costs such as mold costs can be reduced.

Further, since the deformation angle before and after the air filter 10 passes between the brush 19 and the filter drive 20 is relatively small, the air filter 10 is less likely to be damaged, and thus the air filter 10 is less likely to be cut or torn. can do. Further, by providing the filter guide plate 79 between the back plate 2 and the rear plate 3, the filter path 86 can be reliably secured, so that the air filter 10 can be moved extremely 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 61 Damper 62 Rotating shaft 63 Recess 64 Recess 65 Shaft hole 70 Locking recess (Locking means)
72 Dust shooter (second space)
74 Dust shooter side wall A
79 Filter guide plate 84 Dust shooter side wall B
86 filter path (first space)
100 Dust box 101 Dust outlet 103 Protrusion

Claims (4)

It has a frame with a rear plate, a front cover and an open panel,
A suction port on the upper surface of the frame
An air outlet on the bottom of the frame
An air passage that communicates the suction port and the air outlet and blows the indoor air sucked from the suction port from the air outlet.
An air filter provided along the inner surface side of the suction port of the air passage, and
In an air conditioner having a heat exchanger provided in the air passage between the air filter and the air outlet.
A filter guide plate provided on the back side of the rear plate and
The filter cleaning means provided on the upper part of the rear plate and
A back plate is provided behind the filter guide plate.
A first space is provided 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 air filter to the first space to remove dust adhering to the air filter.
The second space is composed of a dust shooter that collects dust removed by the filter cleaning means by dropping it downward.
A dust outlet is provided on the bottom of the dust shooter.
The outlet has a removable dust box,
An air conditioner comprising a damper in the dust shooter above the discharge port to close the dust shooter when the dust box is removed. Racks are provided at the left and right ends of the air filter.
The filter cleaning means
A drive gear that engages with the rack and sends the air 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 air filter,
A brush motor that rotates the brush and
It has a comb tooth portion that scrapes off dust adhering to the brush toward the dust shooter side.
When the air filter passes through the filter cleaning means in order from the end due to the rotation of the feed motor and the brush motor, dust adhering to the filter surface is removed by a brush, and the removed dust is removed at the comb teeth. The air conditioner according to claim 1, wherein the air conditioner is configured to be sent to a dust box. The damper has a pair of rotating shafts at the left and right ends.
Shaft holes are formed on the left and right side walls of the dust shooter.
The rotating shaft is inserted into the shaft hole to rotatably configure the rotating shaft, and a protrusion in contact with the damper is formed in the dust box.
When the dust box is attached to the discharge port, the protrusion pushes up the damper to open the dust shooter, and dust falling in the dust shooter collects in the dust box.
When the dust box is removed, the protrusions come off to rotate the damper to close the dust shooter, thereby preventing dust from falling from the opened discharge port. The air conditioner according to claim 1 or 2, wherein the air conditioner is characterized. The air conditioner according to claim 3, wherein the shaft hole is provided at a contact portion between the dust shooter side wall A formed on the back surface plate and the dust shooter side wall B formed on the filter guide plate.

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