JP6763762B2 - 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 ventilation resistance, heat exchange is hindered, so that the air conditioning capacity of the air conditioner is reduced and power consumption is increased. In order to eliminate such inconvenience, various air conditioners 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 moving 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 for 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, the structure of the filter cleaning device is complicated, and since it is composed of a large number of parts and the manufacturing cost is increased, the product price is also significantly increased.
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 outer frame air conditioner without installing a filter cleaning device, the installation space for the filter cleaning device inside the outer frame remains the same, so the entire air conditioner remains large. However, there is a problem that material costs and transportation costs increase due to the fact that the size is larger than that of a model that is not equipped with a filter cleaning device from the beginning.

In order to solve the above problems, the configuration particularly includes 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 air outlet on the bottom surface of the outer frame. 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 for a blower path between air outlets and an installation plate attached to a wall surface in a room to fix the outer frame, on the back side of the rear plate. A filter cleaning set composed of a filter cleaning means, 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 laminated and assembled on the back side of the rear plate, and by selecting the filter cleaning set and the installation plate, a high-end model equipped with a filter cleaning device and a filter can be assembled. It is an inexpensive model that does not have a cleaning device, and the same outer frame mold can be used, and the cost can be reduced by standardizing parts and assembly work.
In addition, one type of installation plate 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, a dust box is attached to the dust discharge port, and when the installation plate is selected, a discharge port closing plate for closing the discharge port is provided, and a discharge port closing plate is attached to the discharge port. With this configuration, the outlet can be easily closed and the appearance can be prevented from being spoiled.

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. FIG. 12 is a sectional view taken along line CC shown in FIG. A perspective view of the rear plate. Front view of the rear plate. FIG. 15 is a sectional view taken along line DD shown in FIG. A perspective view of the front cover. Sectional view of the front cover. Front view of the filter. Overall cross-sectional view when the same installation plate is selected. The developed perspective view of the rear plate, the upper closing plate, and the outlet closing plate. Front view of the upper closing plate. Top view of the outlet closing plate. 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 set (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 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 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. An air passage 9 is formed between the outlets 8. A pair of left and right air filters 10 for removing dust mixed in the suction air are provided inside the suction port 7 of the air passage path 9, and a horizontally long fin tube is further inside (downstream side) of the air filter 10. It has a heat exchanger 11 of the same 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. 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 which are fixed through 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 capable of forward and reverse rotation, 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.

Reference numeral 44 denotes a motor mounting plate, in which a brush motor 41 and a feed motor 42 are screwed to one surface, and interlocking gears 47 and 48 provided on the motor shafts 45 and 46 and the other surface are provided 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 the motor unit 40 is provided for one air filter 10, and the configuration of the motor unit 40 corresponding to the air filter 10 arranged on the right side is for right side arrangement which is symmetrical with the configuration described above. It has a motor unit 40 of.

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 the installation plate 57 for mounting on the wall surface of the room in the upper part of the back surface, and an installation plate 57 in the lower part of the back surface. Has a claw portion 71 for fixing with a claw hook. Further, the front side of the back plate 2 is provided with a rear surface 73 of the dust shooter 72 (second space) that sends the dust falling from the brush unit 15 and the motor unit 40 side downward, and from the rear surface 73 to the front side. It has a plurality of side walls 74 that are erected vertically. Further, a pair of left and right tongue pieces 58 are provided on the upper part of the installation plate 57, and the upper part of the back plate 2 is locked by inserting the tongue pieces 58 into the locking recess 70. Further, a pair of left and right locking pieces 59 are projected forward in the lower part of the installation plate 57, the locking pieces 59 have a locking hole 60, and the claw portion 71 is locked in 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 long in the horizontal direction are provided in parallel below the tongue piece 58, and a pair of left and right six screw holes 62 are provided above the locking piece 59. 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.

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

A pair of left and right fixing holes 81 are provided on the upper part of the center of the filter guide plate 79 facing the fixing cylinder 80, 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 38 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. .. 84 is a side plate provided with projecting the rear plate 3 directions on the left and right ends of the filter guide plate 79, left and right ends of the air filter 10 during the off I filter cleaning has a guide groove 85 to slide. Further, when the full I filter cleaning rear plate 3 and the filter path 86 (first space) within the filter 10 which is a space between the filter guide plate 79 slides in the vertical direction.

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 passed 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 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. 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 numerals 102 are 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 screwed and fixed.

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 rear end, whereby 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 air outlet 8 is formed between the front frame 114 and the lower frame 113, and a reinforcing frame 121 for vertically reinforcing the front frame 114 and the lower frame 113 is provided at substantially the center of the air 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, the side wall 123 of the air outlet 8 is rotatably provided with a vertical wind direction plate 123.

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 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. Filter cleaning means attached to the surface of the engage the rack 127 and the drive gear 30 to send a full I filter 10 to full I filter guide plate 79 side, the feed motor 42 and off I filter 10 to rotate the drive gear 30 It is composed of a brush 19 for removing dust, a brush motor 41 for rotating the brush 19, and a comb tooth portion 83 for scraping dust adhering to the brush 19 toward the dust shooter side.

The open panel 5 is 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. 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. and, wherein it is mounted in the filter path 86 of filter guide plate 79 (the first space), off I Rutasensa 132 that 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 machine, a brush motor 41 provided with two sets on the left and right, a feed motor 42, etc. Is connected. Off I Rutasensa 132 detects the arrival of the leading end of the filter 10 in the microswitch press-type.

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 then screwed. 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 four places through the fixing holes 81 of the filter guide plate 79.

Next, the rear plate 3 is attached further in front of the filter guide plate 79. The rear plate 3 is fixed to the 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.

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, with the mounting holes 120 locked, 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. Set of filters 10 and the tip of the filter 10 is abutted against the brush 19 and the filter driver 20 position via the slide groove 27 of the unit frame 18 from the full I Rutamizo 118 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.

Explaining the mounting on the wall surface of the room, first, the elongated hole 61 and the screw hole 62 are appropriately selected according to the position where the installation plate 57 is mounted, the condition of the wall surface, the material, and the like, and the installation plate 57 is screwed to the wall surface. Stop. Next, the upper part 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 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 71 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. Indoor dust in the air drifting in the room is integrated with mixed in air sucked in full I filter 10 is performed air-conditioning operation, the heat exchange efficiency of the dust much becomes heat exchanger 11 to the integrated longer the operating time It is necessary to clean the filter 10 before the amount decreases. 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 rack 12 of the filter 10 is rotated by the rotation of the filter drive unit 20.
7 meshes with each other, 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 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 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 in the integrated time but also in various ways such as 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 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 filter 10 is relatively small deformation angle before and after passing between the brush 19 and the full I filter driver 20 also reduces the damage to the filter 10, thereby the failure also reduced to or torn off filter 10 be able to. Further, by providing the filter guide plate 79 between the rear plate 2 and rear plate 3 can be carried out very smoothly moving of the filter 10 during the automatic cleaning operation by reliably ensuring full I filter path 86 ..

Next, the configuration when an inexpensive model is created without installing the filter cleaning set (filter cleaning function) will be described with reference to FIGS. 14 to 16 and 20 to 23.

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 parts. Therefore, it is necessary to close the opening as needed and to enable the indoor unit 1 to 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 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. It may be attached by sliding, and 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.

When the rear plate 2, the brush 19, the motor unit 40, and the filter guide plate 79 are removed, the rear opening 140 opens above the rear drain pan 89 at the upper part of the back surface of the rear plate 3. Therefore, an upper closing plate 141 is provided to close the rear opening 140. The upper closing plate 141 is a horizontally rectangular plate reinforced with a large number of ribs 142, has an upper surface rib 143 provided horizontally on the upper surface, and a back plate 2 is locked on the lower back surface of the upper surface rib 143. It has substantially the same shape as the recess 70, 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 recesses 144 provided on the left and right. Further, a columnar screw boss 147 projecting forward is formed in the lower part 146 of the upper closing plate 141. Further, a step 148 is provided on the back surface side between the locking recess 144 and the lower portion 146.

Explaining the attachment of the upper closing plate 141 to the rear plate 2, the lower portion 146 of the upper closing plate 141 is inserted from the back side of the rear opening 140, and the step portion 148 is abutted against the lower side of the rear opening 140. , The upper surface rib 143 is abutted against the lower part of the upper rail 149 of the rear plate 3. Next, a large number of screws are screwed from the back surface side through the screw holes 145 to the vertical rail 150 formed in the rear opening 140 of the rear plate 3, and through the mounting holes 95 provided in the rear plate 3 to the screw boss 147. It is stopped and 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 terms of the performance of the indoor unit, but a discharge port closing plate 151 is required to prevent deterioration of the design. The discharge port closing plate 151 has a lid protrusion 152 and a spring portion 153 that are slightly larger than the dust discharge port 101 and are locked to the left and right edges of the dust discharge port 101 from below on the left and right sides of the horizontally rectangular plate. There is. Further, in order to compensate for the removal of the back plate 2 so that the claw portion 71 of the back plate 2 locked in the locking hole 60 at the lower part of the installation plate 57 disappears, 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.

Explaining the attachment of the discharge port closing plate 151 to the dust discharge port 101, first, the slightly protruding lid claw portion 154 is inserted inside the dust discharge port 101, and then the lid protrusions 152 are formed on the left and right edges of the dust discharge port 101. And the spring part 153 are fitted and set. Further, the rear plate 3 (indoor unit 1) can be fixed to the installation plate 57 by locking the lid claw portion 154 to the locking hole 60 at the lower part of the installation plate 57 with the discharge port closing plate 151 attached. .. In this embodiment, the lid protrusion 152 and the spring portion 153 are used, but the structure for attaching the discharge port closing plate 151 to the dust discharge port 101 may be screwed to improve the strength.

Next, the assembly procedure of the indoor unit 1 in the case where 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 large 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.

To explain the mounting on the wall surface of the room, first, the installation plate 57 is screwed to the wall surface. Next, the upper part 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 part of the installation plate 57. Then, the lower portion of the rear plate 3 is fixed to the installation plate 57 by locking the lid claw portion 154 of the discharge port closing plate 151 into the locking hole 60 provided in the locking piece 59 at the lower portion of the installation plate 57. Can be done.

By doing so, the filter cleaning means and the back plate 2 can be laminated and assembled on the back side of the rear plate 3, and by selecting the filter cleaning set and the installation plate 57, a high-class equipped with a filter cleaning device is installed. The same outer frame mold can be used for the model and the inexpensive model that does not have a filter cleaning device, and the cost can be reduced by standardizing parts and assembling 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, the discharge port closing plate 141 for closing the discharge port 101 is provided, and the discharge port 101 is provided with the discharge port. By mounting the closing plate 151, the discharge port 101 can be easily closed and the appearance can be prevented from being spoiled.
Further, by providing the lid claw portion 154 on the discharge port closing plate 151, it is possible to more easily standardize parts, standardize assembly 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 Installation plate 70 Locking recess (locking means)
72 Dust shooter (second space)
79 Filter guide plate 86 Filter path (first space)
100 Dust box 101 Dust discharge port 140 Rear opening 141 Upper closing plate 144 Locking recess (blocking plate locking means)
151 Outlet closing plate

Claims (5)

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 outlet on the bottom of the outer 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 a blower path between the air filter and an air outlet, and having an installation plate attached to a wall surface in the room to fix the outer frame.
An air conditioner characterized in that a filter cleaning set composed of a filter cleaning means and a back plate and the installation plate can be selectively attached to the back side of the rear plate. The filter cleaning set
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.
The air conditioner according to claim 1, further comprising a locking means for fixing the installation plate on the back surface of the back plate. When the installation plate is selected, an upper closing plate for closing the opening generated when the filter cleaning set is removed is provided on the upper part of the back surface of the rear plate.
The air conditioner according to claim 1, characterized in that it comprises a closed塞板locking means for securing said mounting plate to the back of the upper closure plate. Racks are provided at the left and right ends of the air filter.
The off I 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.
By rotation of the feed motor and the brush motor, when the air filter is passing through the full I filter cleaning unit from the end in order, dust attached to the full I filter surface is removed with a brush, the dislodged dust comb It is configured to be sent to the dust box at the tooth part.
A dust outlet is provided on the bottom of the dust shooter.
The air conditioner according to claim 2, wherein the outlet has a removable dust box. When the filter cleaning set is selected, a dust box is attached 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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