JP6849535B2 - 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 provided with 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 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 the air filter at the upper rear part of the 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, the structure of the filter cleaning device is complicated, and since it is composed of a large number of parts and the manufacturing cost increases, the product price also increases significantly.
In addition, a large space for assembling the filter cleaning device is required inside the air conditioner, and the presence of this assembling space increases the entire air conditioner (particularly the depth dimension).
Therefore, if an inexpensive model is created with the same frame air conditioner without a filter cleaning device, the installation space for the filter cleaning device inside the frame remains the same, so the entire air conditioner remains large. Compared to models that are not equipped with a filter cleaning device from the beginning, there is a problem that material costs and transportation costs increase due to the large size.

In order to solve the above problems, the configuration thereof is particularly provided to have a frame body including a back plate, a rear plate, a front cover and an open panel, a suction port on the upper surface of the frame body, and a suction port on the lower surface of the frame body. With the air outlet
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 path, and the air filter and the air filter. In an air conditioner having a heat exchanger provided in a ventilation path between outlets and mounting the frame body by locking the back plate to an installation plate provided on a wall surface of the room, the frame. The body is configured to have the rear plate on the front surface of the back plate and the front cover on the front surface of the rear plate, and dust of the air filter is trapped between the rear plate and the back plate. A filter guide plate for partitioning a dust shooter that drops dust removed by the filter cleaning unit to be removed and accumulates can be arranged, and the filter cleaning unit is placed on the upper part of the rear plate and the upper part of the filter guide plate . and then placed on the front side upper portion of the back plate, further, the rear plate rear engaging portion at a rear end inner side of the rear plate, the the plate-side end portion after the filter guide plate guide plate front end The filter guide plate has a guide plate rear end on the back plate side end, a back plate front end on the back plate side, and the rear plate rear end engaging portion is the guide plate. By forming the front end portion of the guide plate into substantially the same shape as the rear end portion and making the front end portion of the guide plate substantially the same shape as the front end portion of the back plate, the rear plate can be attached to the back plate even if the filter guide plate is removed. It is the one.

According to the present invention, a filter guide plate and a back plate can be laminated and assembled on the back side of the rear plate, and a filter cleaning unit is provided on the rear plate, the filter guide plate, and the upper part of the back plate to provide a filter cleaning device. The depth dimension of the air conditioner can be easily shortened with the high-end model equipped with it and the inexpensive model without the filter cleaning device.
In addition, it is possible to use the same frame mold for high-end models equipped with a filter cleaning device and inexpensive models not equipped with a filter cleaning device, and to standardize parts and assembly work. You can reduce the cost with.
Further, with one type of back plate and installation plate, two types of models can be provided: a high-end model equipped with a filter cleaning device and an inexpensive model not equipped with a filter cleaning device.

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. 4A 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. The developed perspective view of the left motor unit. Front view of the back plate. Front view of the filter guide plate. Front view of the rear plate. A perspective view of the rear plate. The BB cross-sectional view explaining the attachment of the rear plate, the filter guide plate, and the back plate. BB sectional view explaining the attachment of the rear plate and the back plate. A perspective view of the front cover. CC sectional view of the front cover. Front view of the filter. Overall sectional view when the filter guide plate and the filter cleaning part are removed. Front view of the installation plate. 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-shaped 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 from below the front cover 4 is provided and blown 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, the vertical frame 16 has a pair of left and right locking projections 25 on the outside of the front end, and is 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 one surface, and the interlocking gears 47 and 48 provided on the motor shafts 45 and 46 and the other 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 a left motor unit 40L corresponding to the air filter 10 arranged on the left side and a right motor unit corresponding to the air filter 10 arranged on the right side are provided. It has 40R, and the left motor unit 40L and the right motor unit 40R are symmetrically configured.

Reference numeral 57 denotes an installation plate for mounting the indoor unit 1 on the wall surface of the room. A pair of left and right tongue pieces 58 are projected forward on the upper portion of the installation plate 57, and a pair of left and right locking pieces 59 are projected forward on the lower portion. The locking piece 59 has a locking hole 60, four horizontally long elongated holes 61 are parallel to the lower part of the tongue piece 58, and six are provided above the locking piece 59. A pair of left and right screw holes 62 are provided. Further, the elongated hole 61 and the screw hole 62 are appropriately selected according to the position where the installation plate 57 is attached, the condition of the wall surface, the material, and the like, and the installation plate 57 is screwed to the wall surface. Further, the brush unit 15 and the motor unit 40 form a filter cleaning unit 63.

The back plate 2 constitutes the rearmost portion of the indoor unit 1, has a locking recess 65 as a locking means for locking to the tongue piece 58 on the upper part of the back surface, and a claw hook on the locking hole 60 on the lower part of the back surface. It has a claw portion 66 for fixing. Further, the front surface side of the back plate 2 is provided with a rear surface 68 of a dust shooter 67 (second space) that sends dust falling from the brush 19 side downward, and is erected vertically from the rear surface 68 to the front side. It has a plurality of side walls 69. Further, by inserting the tongue piece 58 into the locking recess 65, the upper portion of the back plate 2 is locked to the installation plate 57. Further, the lower portion of the back plate 2 is fixed to the installation plate 57 by locking the claw portion 66 to the locking hole 60.

A left motor unit mounting portion 71 for mounting the left motor unit 40L is provided between the upper left side of the side wall 69 and the left frame 70 of the back plate 2, and the left motor unit 40L is mounted in the fixing hole 56 of the motor mounting plate 44. Fix with screws. Further, a right motor unit mounting portion 73 is provided between the right end side wall 69 and the right side frame 72 at the upper right side, and the right motor unit 40R is similarly screwed and fixed. Further, a guide plate mounting boss 74 having a hole having a diameter of about 3 mm in the center of the back plate 2 standing up and down in a columnar shape from the rear surface 68 to the front side between the left and right dust shooters 67 at substantially the center in the left-right direction. A rear plate mounting boss A75 is provided below the guide plate mounting boss 74 by about 10 mm. The rear plate mounting boss A75 also has a hole of about 3 mm in the center. Further, the guide plate mounting boss 74 and the rear plate mounting boss A75 are the lower part of the left motor unit mounting portion 71, the inner lower corner of the left frame body 70, the inner upper corner of the right frame body 72, and the right frame body 72. I own a total of 6 inner lower corners.

76 is a filter guide plate provided with a back plate mounting hole 77 facing the guide plate mounting boss 74, and the back plate mounting hole 77 is penetrated by a screw 78 and screwed to the guide plate mounting boss 74 at six places. Fix the filter guide plate 76 to the back plate 2 with. At this time, the frame rear end 80 of the filter guide plate 76 is fitted inside the frame front end 79 of the back plate 2, and the filter guide plate 76 and the frame of the back plate 2 are formed substantially flat. .. Further, a rear plate mounting boss B81 having substantially the same shape as the rear plate mounting boss A75 is provided at a position coaxial with the rear plate mounting boss A75 formed on the back plate 2. Further, the back surface of the filter guide plate 76 forms a front surface 82 of the dust shooter 67 (second space), and dust falls between the front surface 82 and the rear surface 68.

Reference numeral 83 denotes a comb tooth provided parallel to the upper portion of the filter guide plate 76. The tip of the comb tooth 83 bites into the brush 19, and dust of the air filter 10 scraped off by the brush 19 is separated from the brush 19 and dusted. It works to drop it to the shooter 67 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 side plate provided at the left and right ends of the filter guide plate 76 so as to project in the three directions of the rear plate, and has a guide groove 85 to 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 in the vertical direction in the filter path 86 (first space), which is a space between the rear plate 3 and the filter guide plate 76.

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 a fixed mounting hole provided at a position coaxial with the rear plate mounting boss B81 of the filter guide plate 76 and the rear plate mounting boss A75 of the back plate 2, and the fixed mounting hole 95 is penetrated by a screw 96. The rear plate 3 is fixed to the filter guide plate 76.

A rear plate rear end engaging portion 97 is provided inside the rear end of the rear plate 3, and is fitted so as to cover the guide plate front end portion 98 of the filter guide plate 76. Further, the rear end engaging portion 97 of the rear plate is formed in the same shape as the rear end portion 80 of the guide plate, and the front end portion 98 of the guide plate is formed in the same shape as the front end portion 79 of the back plate to form the filter guide plate 76. Even if it is removed, the rear plate 3 can be attached to the back plate 2. Further, the back plate 2 is attached so as to enter the rear end portion of the rear plate 3 by making the outer dimension thereof smaller than the inner dimension of the rear end portion of the rear plate 3. As a result, the depth dimension of the indoor unit 1 becomes thinner and smaller by the dimension of the filter guide plate 76, so that the cost can be reduced.

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 67 on the bottom surface of the rear plate 3. It has a sufficient volume to store dust generated by the automatic cleaning of the air filter 10 for several months to one year. Reference numeral 102 denotes front cover mounting holes provided at substantially four corners of the rear plate 3, and the front cover 4 is fixed by screws.

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 of the front 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 section 119 is provided at the lower end of the filter groove 118, and when a square and flexible air filter 10 is inserted from the filter insertion section 119 to the brush 19 and the filter drive section 20 at the tip of the filter 10, the filter 10 is in a normal state. It is set to (position when operating the air conditioner). 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 the left-right wind direction plate 14 rotatably attached. Further, the side wall of the air outlet 8 is rotatably provided with the vertical wind direction plate 13.

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 filter 10 to pass between the drive gear 30 and the brush 19 and be sent in the direction of the filter guide plate 76. 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 filter 10 to the filter guide plate 76 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. It is composed of a brush motor 41 that rotates the brush 19 and a gear tooth portion 83 that scrapes off dust adhering to the brush 19 toward the dust shooter 67 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 76 and detecting 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 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 the arrival of the tip of the filter 10 with a pressing type micro switch.

The procedure for assembling the indoor unit 1 will be described. First, the left motor unit 40L is incorporated into the left motor unit mounting portion 71 of the back plate 2, and the right motor unit 40R is incorporated into the right motor unit mounting portion 73 and screwed. Next, the guide plate mounting boss 74 of the back plate 2 is passed through the back plate mounting hole 77 of the filter guide plate 76, and is screwed and fixed at a total of six places, substantially above and below the central portion in the left-right direction and at the four corners. As a result, the frame rear end 80 of the filter guide plate 76 is fitted inside the frame front end 79 of the back plate 2, and the filter guide plate 76 and the frame of the back plate 2 are connected in substantially the same plane. ..

Next, the rear plate 3 is attached further in front of the filter guide plate 76. The rear plate 3 is fixed to the filter guide plate 76 by penetrating the fixing mounting holes 95 of the rear plate 3 and fixing them with screws at six places to the rear plate mounting boss B81 erected on the filter guide plate 76. 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.

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 102 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 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 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.

To explain the mounting on the wall surface of the room, first, the long hole 61 and the screw hole 62 are appropriately selected according to the position, the state of the wall surface, the material, etc., at which the installation plate 57 is mounted on the wall surface of the room. Screw 57 to the wall surface. Next, the upper part of the back plate 2 is locked to the installation plate 57 by inserting and locking the locking recess 65 of the back plate 2 into the tongue piece 58 on the upper part of the installation plate 57. Then, the lower portion of the back plate 2 is fixed to the installation plate 57 by engaging the claw portion 66 of the back plate 2 with the locking hole 60 provided in the locking piece 59 at the lower portion of the installation plate 57.

The operation of the automatic cleaning operation of the 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 filter 10. If 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 integrated operation time and other cleaning timings, and starts the automatic cleaning operation of the 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 filter 10 to engage, and the 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 filter 10. The dust adhering to the brush 19 is scraped off to the dust shooter 67 side by the comb teeth 83 of the filter guide plate 76, falls inside the dust shooter 67, 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 in reverse rotation, and the 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 filter 10 several times, the cleaning of the filter 10 can be surely 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.

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 67, 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 deformation angle before and after the filter 10 passes between the brush 19 and the filter drive 20, the deformation angle before and after the filter 10 passes between the brush 19 and the filter drive 20 is relatively small, so that the filter 10 is less likely to be damaged, and thereby the failure of the filter 10 being cut or torn can be reduced. it can. Further, by providing the filter guide plate 76 between the back plate 2 and the rear plate 3, the filter path 86 can be reliably secured, so that the filter 10 can be moved extremely smoothly during the automatic cleaning operation.

Next, the configuration when an inexpensive model is created without the filter cleaning function will be described with reference to FIGS. 15 and 19.

The brush unit 15, the motor unit 40, the filter guide plate 76, and the dust box 100 are removed from the configuration of the high-end model equipped with the filter cleaning unit, and the rear plate 3 is directly attached to the back plate 2. Specifically, the rear plate mounting boss A75 of the back plate 2 is passed through the fixed mounting hole 95 of the back plate 2 and screwed at 6 places with screws 96. The front end portion 79 of the back plate of the back plate 2 is fitted and attached to the rear end engaging portion 97 of the rear plate formed inside the rear end of the rear plate 3. Further, the back plate 2 is attached so as to enter the rear end portion of the rear plate 3 by making its outer dimension smaller than the inner dimension on the back side of the rear plate 3. As a result, the cost can be reduced by making the depth dimension of the indoor unit 1 thinner and smaller by the dimension of the filter guide plate 76.

When the brush unit 15 is removed, the upper surface of the rear plate 3 from the front cover 4 becomes an upper surface opening 87, but since it is opened as a suction port 7, the air filter 10 provided below the upper surface opening 87 is normally used. The upper surface opening 87 may be used as the suction port 7 as it is, or the brush 19 and the filter drive unit 20 may be removed from the brush unit 15 and only the unit frame 18 may be attached to the suction port 7. It may be used as a protective frame.

Next, when the dust box 100 is removed, the dust discharge port 101 appears on the bottom surface of the rear plate 3. If the dust discharge port 101 is opened, a problem of sucking indoor air from the dust discharge port 101 to bypass the air filter 10 and a discharge port closing plate 140 are required to prevent deterioration of the design. The discharge port closing plate 140 is slightly larger than the dust discharge port 101 and is attached by locking a horizontally rectangular plate.

By doing so, the depth dimension of the air conditioner can be easily shortened between a high-end model equipped with a filter cleaning device and an inexpensive model not equipped with a filter cleaning device. In addition, it is possible to use the same frame mold for high-end models equipped with a filter cleaning device and inexpensive models not equipped with a filter cleaning device, and to standardize parts and assembly work. You can reduce the cost with. In addition, one type of rear plate 3, back plate 2, and installation plate 57 can be provided with two types of models, a high-end model equipped with a filter cleaning device and an inexpensive model not equipped with a filter cleaning device.

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 57 Installation plate 63 Filter cleaning unit 65 Locking recess (locking means)
67 Dust shooter (second space)
74 Guide plate mounting boss 75 Rear plate mounting boss A
76 Filter guide plate 77 Back plate mounting hole 81 Rear plate mounting boss B
86 filter path (first space)
100 dust box

Claims (3)

It has a frame with a back plate, a rear plate, a front cover, and an open panel.
A suction port on the upper surface of the frame
An air outlet at 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
An air conditioner having a heat exchanger provided in a blower path between the air filter and the air outlet, and mounting the back plate on an installation plate provided on a wall surface of the room to attach the frame. At
The frame body is configured to have the rear plate on the front surface of the back plate and the front cover on the front surface of the rear plate.
A filter guide plate for partitioning a dust shooter that collects dust removed by a filter cleaning unit that removes dust from the air filter can be arranged between the rear plate and the back plate. The filter cleaning part is arranged on the upper part of the rear plate, the upper part of the filter guide plate, and the upper part on the front side of the back plate, and further, the rear end engaging portion of the rear plate is provided inside the rear end of the rear plate. , The front end of the guide plate is on the rear end of the filter guide plate, the rear end of the guide plate is on the back end of the filter guide plate, and the front end of the back plate is on the rear end of the back plate. The filter has a portion, and the rear end engaging portion of the rear plate is formed to have substantially the same shape as the rear end portion of the guide plate, and the front end portion of the guide plate has substantially the same shape as the front end portion of the back plate. An air conditioner characterized in that the rear plate can be attached to the back plate even when the guide plate is removed. The air conditioner according to claim 1, wherein the filter guide plate has an outer dimension smaller than an inner dimension on the back surface side of the rear plate. The back plate has a guide plate mounting boss and a rear plate mounting boss A.
The filter guide plate has a back plate mounting hole facing the guide plate mounting boss and a rear plate mounting boss B.
The rear plate has a fixed mounting hole facing the rear plate mounting boss B.
The rear plate mounting boss A, the rear plate mounting boss B, and the fixed mounting hole are coaxially configured.
When the filter guide plate and the filter cleaning portion are arranged, the filter guide plate is fixed to the back plate via the guide plate mounting boss and the back plate mounting hole, and the filter guide plate is fixedly mounted to the rear plate mounting boss B. The rear plate is fixed to the filter guide plate through the hole, and the rear plate is fixed.
The first aspect of the present invention is that when the filter guide plate and the filter cleaning portion are not arranged, the rear plate is fixed to the back plate via the rear plate mounting boss A and the fixing mounting hole. The air conditioner according to any one of 2 to 2 .

Images