JP2018105510A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner capable of making an outer frame of a model mounted with a filter cleaner and an outer frame of a model having no filter cleaner common to reduce costs.SOLUTION: An air conditioner includes: an outer frame including a rear plate 3, a front cover 4 and an open panel 5; a suction port 7 on an upper surface of the outer frame; a blowout port 8 on a bottom surface of the outer frame; an air feeding route communicating with the suction port and the blowout port, and configured to feed indoor air suctioned from the suction port to the blowout port; a filter 10 provided along on the suction port inner surface side of the air feeding route; a heat exchanger 11 provided in the air feeding route between the filter and the blowout port; and an installation plate 57 attached to a wall surface of a room and configured to fix the outer frame. On a back side of the rear plate, the installation plate, and a filter cleaning set comprising a filter guide plate, filter cleaning means and a back plate can be selectively attached.SELECTED DRAWING: Figure 2

Description

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

  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. In order to prevent contamination, an air filter is provided on the windward side of the heat exchanger. When dust adheres to the air filter and clogging occurs and the ventilation resistance increases, heat exchange is hindered, so that the air conditioning capability of the air conditioner decreases and power consumption increases. In order to eliminate such inconveniences, various air conditioners having an air filter automatic cleaning function have been proposed.

When the air filter is automatically cleaned, 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, and a transfer means is provided in the middle of the moving path to move the air filter, and the moving path is U-shaped in the front space of the heat exchanger. In addition, a rotary brush in contact with the moving path and a filter cleaning device such as a dust box for storing dust scraped off by this brush are provided in the space on the front side of the heat exchanger, and the air filter is moved. In some cases, automatic cleaning is performed by a filter cleaning device. (For example, see Patent Document 1)

In addition, there is a type that performs automatic cleaning by moving a cleaning means (cleaning brush, dust box, etc.) over the entire filter surface.
Also, there is a type in which a cleaning means and a filter transfer means (filter take-up device or the like) are provided at the front end portion of the air filter behind the upper part in the outer frame, and automatic cleaning is performed with a brush while winding the filter front end. (For example, see Patent Document 2)

Japanese Patent No. 4175409 JP 2002-5504 A

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, the manufacturing cost increases, so the product price also increases significantly.
In addition, a large space for assembling the filter cleaning device inside the air conditioner is necessary, and the entire air conditioner (especially the depth dimension) becomes large due to this assembly space.
Therefore, when an inexpensive air conditioner with the same outer frame is installed without installing a filter cleaning device, the installation space for the filter cleaning device in the outer frame remains the same, so the entire air conditioner remains large. There is a problem that the material cost and the transportation cost increase due to the large size compared with the model not equipped with the filter cleaning device from the beginning.

  In order to solve the above-mentioned problems, in particular, the structure has an outer frame provided with a rear plate, a front cover, and an open panel, a suction port on the upper surface of the outer frame, and an outlet on the bottom surface of the outer frame. A ventilation path that communicates the suction opening and the outlet, and blows indoor air sucked from the suction opening from the outlet; an air filter provided along the inner surface of the suction opening of the ventilation path; and the air filter In an air conditioner having a heat exchanger provided in the air flow path between the air outlets, and having an installation plate that is attached to the wall surface of the room and fixes the outer frame, on the back side of the rear plate, A filter cleaning set composed of a filter cleaning means and a back plate and the installation plate can be selected and attached.

According to the present invention, the filter cleaning means and the back plate can be stacked and assembled on the back side of the rear plate, and the filter cleaning set and the installation plate are selected, so that a high-end model equipped with the filter cleaning device, the filter It is an inexpensive model that is not equipped with a cleaning device, can use a mold with the same outer frame, and can reduce costs by sharing parts and assembling work.
In addition, it is possible to install two types of models with one type of installation plate: a high-end model equipped with a filter cleaning device and an inexpensive model not equipped with a filter cleaning device.
In addition, when a filter cleaning set is selected, a dust box is attached to the dust outlet, and when an installation plate is selected, a dust outlet closing plate is provided to close the outlet, and a drain outlet closing plate is attached to the outlet. By adopting such a configuration, it is possible to easily close the discharge port and prevent the appearance from being impaired.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. Sectional drawing of the whole. FIG. The top view of the unit frame. The right view of the unit frame. AA sectional drawing shown in the same FIG. The front view of the brush. The front view of the filter drive part. The expansion perspective view of the motor unit. The front view of the back plate. BB sectional drawing shown in the same FIG. The front view of the filter guide plate. CC sectional drawing shown in the same FIG. The perspective view of the back plate. The front view of the back plate. DD sectional drawing shown in the same FIG. The perspective view of the front cover. Sectional drawing of the front cover. The front view of the filter. Sectional drawing of the whole at the time of selecting the installation board. The expansion | deployment perspective view of the back board, an upper obstruction board, and a discharge port obstruction board. The front view of the same upper obstruction board. The top view of the discharge port obstruction board. The front view of the installation board. Schematic of the control circuit.

  Next, a configuration incorporating a filter cleaning set (filter cleaning function) in the embodiment of the air conditioner of the present invention will be described based on the drawings. 1 is an indoor unit of a separate type air conditioner, and an outer frame 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 sides of the open panel 5 located in front of the front cover 4 It is attached to the front of the front cover 4 so as to be openable and closable with a support shaft (not shown) provided on the support shaft as a fulcrum.

  The front cover 4 is provided with a horizontally-lattice suction port 7 on the upper surface thereof, and a horizontally long air outlet 8 for blowing air whose temperature is adjusted obliquely forward from the lower surface to the bottom surface of the front cover 4. 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 intake air are provided inside the air inlet 7 of the air passage 9, and a horizontally long fin tube is provided further inside (downstream side) of the air filter 10. It has a heat exchanger 11 of the type, and is arranged in an inverted V shape in a side view with an intermediate portion in the front-rear direction as a top portion. A blower fan 12 comprising a horizontally long cross-flow fan is provided below the heat exchanger 11, and the blower outlet 8 adjusts the direction of the blown air in the vertical direction during operation and automatically blows off the blower outlet 8 when stopped. And an up-and-down wind direction plate 13 and a left-right wind direction plate 14 that adjusts the wind direction of the blowing air in the left-right direction.

  Reference numeral 15 denotes a brush unit, which includes a brush 19 for automatically cleaning the air filter 10 at the tip of a unit frame 18 that forms the suction port 7 with a horizontally elongated vertical frame 16 and a 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 projecting at both ends on the rear side, the brush mounting holes 22 are formed in the left and right end portions 21 respectively, and the rotating shaft 23 of the brush 19 is provided in the brush mounting hole 22. By inserting, the brush 19 rotates around the brush mounting hole 22. A pair of slide protrusions 24 are provided in front of the brush mounting holes 22 of the left and right end portions 21 and on the left and right sides, and are used as guides when the brush unit 15 is attached and detached. Further, a pair of left and right engaging projections 25 are provided on the outer front end of the vertical frame 16 and used as a stopper when the brush unit 15 is mounted. Further, a filter driving portion mounting hole 26 is provided further forward than the slide protrusion 24 of the vertical frame 16. In addition, the inner 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 for transmitting 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 that are penetrated and fixed to both ends of the drive shaft 29. Further, when the drive shaft 29 protrudes outside the drive gear 30 and is inserted into the filter drive portion mounting hole 26, the filter drive portion 20 rotates around the filter drive portion mounting hole 26.

  A motor unit 40 includes a brush motor 41 serving as a drive source for the brush 19 and a feed motor 42 serving as a drive source for the filter drive unit 20. The brush motor 41 and the feed motor 42 use a step motor capable of rotating in the forward and reverse directions, and operate the brush 19 and the filter drive unit 20 in accordance with a signal from the control unit 43 to automatically clean the air filter.

  Reference numeral 44 denotes a motor mounting plate. The brush motor 41 and the feed motor 42 are screwed to one surface, and motor shafts 45 and 46 and interlocking gears 47 and 48 provided on the other surface are connected to the through holes 49 and 46 of the motor mounting plate 44. 50 to penetrate and connect. A gear cover 51 covers the interlocking gears 47 and 48 and includes shaft holes 52 and 53. The interlocking gears 47 and 48 are rotatably held between the through holes 49 and 50 and the shaft holes 52 and 53. . The gear cover 51 is fixed 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 unit 40 is provided for one air filter 10, and the configuration of the motor unit 40 corresponding to the air filter 10 disposed on the right side is for the right side arrangement that is symmetrical with the configuration described above. The motor unit 40 is provided.

  The back plate 2 constitutes the rearmost part of the indoor unit 1, a locking recess 70 as a locking means for locking to a mounting plate 57 for mounting on the wall surface of the room at the upper back, and a mounting plate 57 at the lower back. It has a claw portion 71 for fixing with a claw. Further, a rear surface 73 of a dust shooter 72 (second space) for sending dust falling from the brush unit 15 and the motor unit 40 side downward is provided on the front surface side of the back plate 2. It has a plurality of side walls 74 standing vertically. Further, a pair of left and right tongue pieces 58 are provided on the upper portion of the installation plate 57, and the upper portion of the back plate 2 is locked by being inserted into the locking recess 70. In addition, a pair of left and right locking pieces 59 project forward from the lower portion of the mounting plate 57, and the locking piece 59 has a locking hole 60, and the claw portion 71 is locked to the locking hole 60. By doing so, the lower part of the back plate 2 is fixed to the installation plate 57. Further, four elongated holes 61 that are long in the horizontal direction are provided in parallel below the tongue piece 58, and a pair of left and right screw holes 62 are provided above the locking piece 59. The long hole 61 and the screw hole 62 are appropriately selected according to the position where the mounting plate 57 is attached, the state of the wall surface, the material, and the like, and the mounting plate 57 is screwed to the wall surface.

A left motor unit mounting portion 76 for mounting the motor unit 40 is provided between the left upper portion of the side wall 74 and the left outer frame 75 of the back plate 2, and the motor unit 40 is mounted and screwed into 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 upper portion of the right end side wall 74 and the right outer frame 77, and is similarly fixed with screws. In addition, four cylinders are erected on the upper part of the center wall of the rear surface 73 and have a fixing cylinder 80 for fixing the filter guide plate 79.

  A pair of right and left fixing holes 81 are provided in the upper part of the central guide of the filter guide plate 79 so as to face the fixing cylinder 80, and the filter guide plate 79 is fixed to the back plate 2 with screws. 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.

  83 is a comb tooth provided in parallel with 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 to be dust shooter. It works to drop to the 72 side. The comb teeth 38 project from the tip toward the rotating shaft 23 of the brush 19, and the amount of biting of the brush 19 can be adjusted by changing the distance between the brush 19 and the comb teeth 83 according to the bristle amount and rigidity of the brush 19. . Reference numeral 84 denotes a side plate provided at the left and right ends of the filter guide plate 79 so as to protrude in the direction of the rear plate 3 and has guide grooves 85 on 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 a filter path 86 (first space) that is a space between the rear plate 3 and the filter guide plate 79.

  The upper portion of the rear plate 3 is provided with two U-shaped upper surface openings 87 for attaching the brush unit 15, and grooves 88 for guiding the slide protrusions 24 of the brush unit 15 are formed on the left and right inner surfaces of the upper surface opening 87. Have. 89 is a rear drain pan, and the rear part of the heat exchanger 11 is arranged above, and the condensed water generated from the rear part of the heat exchanger 11 is collected and drained during cooling operation. Reference numeral 90 denotes a casing, which includes the blower fan 12 at a front side 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. 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 with respect to the rotation shaft 94 of the. Reference numeral 95 denotes an attachment hole provided at the left and right end portions, the upper and lower portions of the center, and the like, and is fixed to the attachment rib 96 and the like standing on the back plate 2 through the attachment hole 95 with 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 has a protrusion 98 for locking upward at the tip.

  99 is a front drain pan, and the front part of the heat exchanger 11 is disposed above, and the condensed water generated from the front part of the heat exchanger 11 is collected and drained during cooling operation. The left and right ends of the front drain pan 99 are provided with mounting legs (not shown), and these mounting legs are fitted into the rear plate 3 for mounting.

  Reference numeral 100 denotes a dust box, which is detachably attached to the dust discharge port 101 provided at the bottom of the dust shooter 72 on the bottom surface of the rear plate 3 from below. It 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 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 side from the center of the front surface, and a substantially upper center in the left-right direction. A frame 112 and a central frame 115 that vertically connects the front frame 114 are provided. Inside the upper part of the left side plate 110 and the central frame 115, there are 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. The slide projection 24 of the brush unit 15 is guided by the above-mentioned, and the brush unit 15 is pulled down downward in a state where the brush unit 15 is in contact with the rearmost portion, so that the engagement projection 25 of the brush unit 15 is fitted into the U-shaped engagement portion 117. The brush unit 15 can be set.

  A filter groove 118 provided below the groove 116 is continuously connected to the slide groove 27 of the brush unit 15 and holds the left and right end portions 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 square shape and flexibility is inserted from the filter insertion portion 119 to the brush 19 and the filter driving portion 20, the filter 10 is in a normal state. (Position when operating the air conditioner) A mounting hole 120 is provided through the upper surface of the left side plate 110 and the right side plate 111, and a projection 98 at the front end 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 part of the front cover 4 is locked, the lower part of the front cover 4 is fixed to the rear plate 3 with 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 that vertically reinforces the front frame 114 and the lower frame 113 is provided at the center of the air outlet 8 in the left-right direction. The lower frame 113 in the lower portion has a left and right wind direction plate 122 that is rotatably attached. Moreover, the side wall 123 of the blower outlet 8 has the up-and-down wind direction board 123 so that rotation is possible.

  The air filter 10 has a square 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 driving gear 30 of the filter driving unit 20 at the vertical bars 124 at both ends. have. When the filter is cleaned, the filter 10 is passed between the drive gear 30 and the brush 19 by the rotation of the drive gear 30 and sent in the direction of the filter guide plate 79. When passing between the drive gear 30 and the brush 19, dust attached to the surface of the air filter 10 is removed by the brush 19. The filter cleaning means engages with the rack 127 to send the filter 10 to the filter guide plate 79 side, the feed motor 42 that rotates the drive gear 30, and the brush 19 that removes dust adhering to the surface of the filter 10. The brush motor 41 that rotates the brush 19 and a comb tooth portion 83 that scrapes dust adhering to the brush 19 to the dust shooter side.

  The open panel 5 is provided to be opposed to a pair of locking shafts (not shown) provided at both upper left and right ends of the front cover 4 so as to be rotatable about a locking portion (not shown). The 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 operation switches (not shown) and timer switches (not shown) on the input side, a room temperature sensor 129, a humidity sensor 130, and a heat exchange sensor 131. In addition, a filter sensor 132 or the like that is attached to 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 unit, a brush motor 41 provided in two sets on the left and right, a feed motor 42, etc. Is connected. The filter sensor 132 is a pressing type micro switch and 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 back plate 2 and fixed with screws. Next, the filter guide plate 79 is fixed to the front side of the back plate 2 by screwing the fixing plate 80 of the back plate 2 with four fixing holes 81 of the filter guide plate 79.

  Next, the rear plate 3 is attached further forward 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 through the mounting ribs 96 erected on the rear plate 2 and fixing them with six screws. Next, the blower fan 12 is fixed together with the bearing and the blower motor 93 so that the blower fan 12 is positioned between the left side surface 91 and the right side surface 92 in front of the casing 90. 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 protrusions 98 of the front cover mounting piece 97 provided at the left and right upper ends of the rear plate 3 are engaged with the mounting holes 120 provided at the left and right upper ends of the front cover-4. Next, the entire front cover 4 is rotated while the mounting hole 120 is locked to bring the front cover 4 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. It penetrates and is fixed to the front cover mounting hole 102 of the rear plate 3 with screws.

  Next, the slide protrusions 24 provided with the brush unit 15 on the left and right sides from the front of the front cover 4 are slid rearward along the grooves 116 of the front cover 4 and guided to the grooves 88 of the rear plate 3 connected to the grooves 116. By pulling downward while the unit 15 is in contact with the rearmost portion, the locking protrusion 25 of the brush unit 15 is fitted 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 against the position of the brush 19 and the filter driving unit 20 from the filter groove 118 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, assembling of the indoor unit 1 is completed when the open panel 5 is locked and attached to the upper frame 112 and the front frame 114 of the front cover 4.

  The installation to the wall surface in the room will be described. First, the long hole 61 and the screw hole 62 are appropriately selected according to the position where the installation plate 57 is attached, the state of the wall surface, the material, etc., and the installation plate 57 is screwed to the wall surface. Stop. Next, the upper portion of the back plate 2 is locked to the installation plate 57 by inserting and locking the locking recess 70 of the back plate 2 to the tongue piece 58 on the top of the installation plate 57. Then, the lower portion of the rear plate 2 is fixed to the installation plate 57 by engaging the claw portion 71 of the rear plate 2 in the engagement hole 60 provided in the engagement 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, the dust in the air drifting in the room is mixed with the intake air and accumulates in the filter 10, and the accumulated dust increases as the operation time increases, and the heat exchange efficiency of the heat exchanger 11 decreases. Before cleaning, the filter 10 needs to be cleaned. The control unit 43 determines the accumulated 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 is engaged with the rotation of the filter driving unit 20, and the filter 10 is gradually pulled toward the rear filter path 86 (first space). At the same time, 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 72 side by the comb teeth 83 of the filter guide plate 79, 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 is reversed in the reverse direction, and the filter 10 returns to the filter insertion portion 119 side of the front cover 4. At this time, the brush motor 41 keeps rotating in the forward direction, so that the dust on the brush 19 and the comb teeth 83 does not return. If such a reciprocating operation (cleaning operation) of the filter 10 is repeated several times, the cleaning of the filter 10 can be surely cleaned. Then, the normal air-conditioning operation is repeated until the next automatic cleaning timing comes. The automatic cleaning operation interval can be set not only for the accumulated time but also for various times such as time and day of the week. Further, 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 garbage disposal work is performed once a few months or once a year, if necessary. However, the removed garbage is accumulated at the bottom of the dust shooter 100 to ensure a large garbage storage space and air conditioning. 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 garbage disposal operations, and it is possible to prevent the leakage and breakdown 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 is also relatively small, the filter 10 is less likely to be damaged, thereby reducing the failure of the filter 10 to be cut or torn. it can. Further, by providing the filter guide plate 79 between the back plate 2 and the rear plate 3, it is possible to move the filter 10 very smoothly during the automatic cleaning operation by ensuring the filter path 86 with certainty.

  Next, a configuration when an inexpensive model is created without mounting a filter cleaning set (filter cleaning function) will be described based on FIGS. 14 to 16 and FIGS.

  When the back plate 2, the brush unit 15, the motor unit 40, the filter guide plate 79, and the dust box 100 are removed from the configuration in which the filter cleaning set is mounted, the rear plate 3 has openings corresponding to the removed components. Therefore, a configuration is required in which the opening is closed as necessary and the indoor unit 1 can be attached to the installation plate 57.

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

  When the rear plate 2, the brush 19, the motor unit 40, and the filter guide plate 79 are removed, the rear opening 140 is opened above the rear drain pan 89 at the upper back of the rear plate 3. Therefore, an upper closing plate 141 is provided to close the rear opening 140. The upper blocking plate 141 is a horizontal rectangular plate reinforced by a large number of ribs 142, and has an upper surface rib 143 provided horizontally on the upper surface, and the lower surface of the upper surface rib 143 is engaged with the back plate 2. It has substantially the same shape as the recess 70 and is provided with a locking recess 144 as a closing plate locking means, and has three screw holes 145 at the center and left and right ends of the locking recess 144 provided on the left and right. A cylindrical screw boss 147 that protrudes forward is formed on the lower portion 146 of the upper closing plate 141. Further, a step 148 is provided on the back side between the locking recess 144 and the lower portion 146.

  The attachment of the upper closing plate 141 to the rear plate 2 will be described. The lower portion 146 of the upper closing plate 141 is inserted from the back side of the rear opening 140 and the step 148 is abutted against the lower side of the rear opening 140. The upper surface rib 143 is brought into contact with the lower part of the upper rail 149 of the rear plate 3. Next, a screw hole 145 is passed through from the back side and screwed to a vertical beam 150 formed in the rear opening 140 of the rear plate 3, and a plurality of screws are passed through a mounting hole 95 provided in the rear plate 3 to a screw boss 147. It is fixed.

  Next, when the dust box 100 is removed, the dust discharge port 101 appears on the bottom surface of the rear plate 3. Even if the dust discharge port 101 is opened, there is no problem in the performance of the indoor unit, but the discharge port closing plate 151 is necessary to prevent the design from being deteriorated. This discharge port closing plate 151 has lid protrusions 152 and spring portions 153 that are engaged with the left and right edges of the dust discharge port 101 from below on the left and right sides of a horizontally rectangular plate that is slightly larger than the dust discharge port 101. Yes. Further, in order to compensate for the fact that the claw portion 71 of the back plate 2 that has been locked in the lock hole 60 at the bottom of the installation plate 57 is eliminated by removing the back plate 2, the back plate 2 is installed inside the discharge port closing plate 151. A lid claw portion 154 having substantially the same shape as the claw portion 71 of the back plate 2 is formed at a position facing the locking hole 60 of the plate 57, and the lower portion of the rear plate 3 is fixed.

  The attachment of the discharge port closing plate 151 to the dust discharge port 101 will be described. First, a slightly protruding lid claw portion 154 is placed inside the dust discharge port 101 and then the lid protrusions 152 on the left and right edges of the dust discharge port 101. And the spring part 153 is fitted and set. Further, the rear plate 3 (indoor unit 1) can be fixed to the installation plate 57 by engaging the lid claw portion 154 in the engagement hole 60 below the installation plate 57 with the discharge port closing plate 151 attached. . In this embodiment, the cover projection 152 and the spring portion 153 are used. However, the attachment structure of the discharge port closing plate 151 to the dust discharge port 101 may be screwed to improve the strength.

  Next, an assembly procedure of the indoor unit 1 when an inexpensive model is created without mounting the filter cleaning set will be described. First, the upper closing plate 141 is screwed to the rear opening 140 of the rear plate 3 from the back side with a number of screws. Next, the discharge port closing plate 151 is fitted into the dust discharge port 101 of the rear plate 3 and set.

  Next, the assembly of the blower fan 12, the blower motor 93, the front drain pan 99, the heat exchanger 11, the front cover 4, the air filter 10, and the open panel 5 is almost the same as the model equipped with the filter cleaning set described above. Can be assembled in the process.

  If the attachment to a wall surface in a room is explained, first, the installation plate 57 is screwed to the wall surface. Next, the upper portion of the rear plate 3 is locked to the installation plate 57 by inserting and locking the locking recess 144 of the upper closing plate 141 into the tongue piece 58 on the upper side of the installation plate 57. Then, the lower portion of the rear plate 3 is fixed to the installation plate 57 by engaging the lid claw portion 154 of the discharge port closing plate 151 in the engagement hole 60 provided in the engagement piece 59 at the lower portion of the installation plate 57. Can do.

  In this way, the filter cleaning means and the back plate 2 can be stacked and assembled on the back side of the rear plate 3, and the filter cleaning set and the installation plate 57 can be selected to install a high-quality filter cleaning device. The model and an inexpensive model that does not have a filter cleaning device can be used, and the same outer frame mold can be used, and the cost can be reduced by using common parts and assembly work.

In addition, one type of installation plate 57 can be used to install 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.
Further, when the filter cleaning set is selected, the dust box 100 is attached to the dust discharge port 101, and when the installation plate 57 is selected, a discharge port closing plate 141 for closing the discharge port 101 is provided, and the discharge port 101 has a discharge port. By adopting a configuration in which the blocking plate 151 is mounted, it is possible to easily block the discharge port 101 and prevent the appearance from being impaired.
In addition, by providing the lid claw portion 154 in the discharge port closing plate 151, it is possible to more easily share parts, share assembling work, and reduce costs.

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 Mounting plate 70 Locking recess (Locking means)
72 Dust Shooter (2nd space)
79 Filter guide plate 86 Filter path (first space)
DESCRIPTION OF SYMBOLS 100 Dust box 101 Garbage discharge port 140 Rear part opening part 141 Upper blockage board 144 Locking recessed part (blocking board locking means)
151 Outlet closing plate

Claims (5)

It has an outer frame with a rear plate, front cover and open panel,
A suction port on the upper surface of the outer frame;
An air outlet on the bottom of the outer frame;
A ventilation path that communicates the air inlet and the air outlet and blows indoor air sucked from the air inlet from the air outlet, and
An air filter provided along the inner surface side of the suction port of the air passage;
A heat exchanger provided in a ventilation path between the air filter and the air outlet, and an air conditioner including an installation plate that is attached to a wall surface of a room and fixes the outer frame.
An air conditioner characterized in that a filter cleaning set composed of filter cleaning means and a back plate and the installation plate can be selected and attached to the back side of the rear plate. The filter cleaning set is
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 back plate behind the filter guide plate,
A first space between the rear plate and the filter guide plate;
Having a second space between the filter guide plate and the back plate;
The filter cleaning means is configured to remove dust adhering to the air filter by sending the air filter to the first space,
The second space is constituted by a dust shooter that collects the dust removed by the filter cleaning means by dropping it down and collecting it.
The air conditioner according to claim 1, further comprising a locking unit that fixes the installation plate to a back surface of the back plate. When the installation plate is selected, an upper closing plate that closes the opening generated when the filter cleaning set is removed is provided on the upper back of the rear plate,
The air conditioner according to claim 1, further comprising a closing plate locking means having substantially the same shape as the locking means on a back surface of the upper closing plate. Racks are provided on the left and right ends of the air filter,
The filter cleaning means includes:
A drive gear that engages with the rack and sends the air filter to the first space;
A feed motor for rotating the drive gear;
A brush for removing dust adhering to the surface of the air filter;
A brush motor for rotating the brush;
A comb tooth portion for scraping dust adhering to the brush to the dust shooter side,
When the air filter passes through the filter cleaning means in order from the end by the rotation of the feed motor and the brush motor, dust attached to the filter surface is removed with a brush, and the removed dust is removed at the comb teeth portion. It is configured to send to the dust box,
A dust outlet is provided on the bottom of the dust shooter,
The air conditioner according to claim 2, further comprising a detachable dust box at the discharge port. When selecting the filter cleaning set, attach a dust box to the outlet,
When the installation plate is selected, a discharge port closing plate for closing the discharge port is provided,
The air conditioner according to claim 4, wherein the discharge port closing plate is attached to the discharge port.

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