JP4513957B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner having a filter cleaning function for automatically cleaning a dirty air filter, and more specifically, a filter that can reliably remove dust adhering to the air filter without scattering to the surroundings. The present invention relates to an air conditioner having a cleaning function.

  The air conditioner (indoor unit) is provided with a dust-proof air filter for preventing dust from flowing into the air suction port. Usually, this air filter is detachably attached to the indoor unit, and the user cleans it appropriately according to the time.

  However, since the air conditioner is generally provided at a high place in the room, the air filter removal work is troublesome and particularly difficult for elderly people and women. Therefore, the present applicant has proposed an air conditioner that automates the cleaning operation of the air filter.

  As an example, in the invention described in Patent Document 1, an air filter can be moved, and an air filter cleaning unit in which a cleaning brush is built in a dust box is provided in the indoor unit, and the air filter passes through the dust box. By doing so, the air filter is automatically cleaned.

  According to this, it is possible to clean the air filter without bothering humans, but the structure is such that the air filter is passed through the dust box and the dust adhering to it is scraped off with a brush. May be taken out of the dust box as the air filter moves.

  In order to prevent this, in the invention described in Patent Document 1, a scraper is provided at the filter entrance of the dust box. The scraper detects the movement of the air filter and opens when the air filter moves forward and closes when the air filter moves backward. This is not preferable.

  Further, in the invention described in Patent Document 1, a special filter is used in which a filter and a brush with low contact resistance between the filter and a frame are integrally molded. However, when the air filter is an integrally molded product, the molding cost is high. . Moreover, since the air filter is thick, the ventilation resistance tends to be high.

  In order to solve these problems, the problem can be solved by using a conventional air filter having a mesh sheet. However, when a mesh sheet is used, the brush is easily caught in the mesh and the contact resistance becomes too high. Therefore, a high torque motor is required to move the filter.

JP 2004-28487 A

  The present invention has been made in order to solve the above-described problems. The object of the present invention is to make it possible to reliably remove dust adhering to the air filter while having a simple configuration, and to disperse the removed dust around. An object of the present invention is to provide an air conditioner having a filter cleaning function that can be securely stored without any problems.

  In order to achieve the above-described object, the present invention has several features described below. First, the invention described in claim 1 includes an indoor unit housing having an air inlet and an air outlet, and an air filter is disposed inside the air inlet, A filter cleaning unit having a cleaning case surrounding both front and back surfaces of a part of the air filter, and a cleaning driving means for moving either the air filter or the filter cleaning unit are provided, and the cleaning driving is performed. In the air conditioner that cleans the air filter by relatively moving the air filter and the filter cleaning unit by means, the filter cleaning unit is arranged on the first filter inlet / outlet side of the cleaning case. 1 cleaning unit and a second cleaning unit disposed on the other filter entrance / exit side of the cleaning case, and a space between the cleaning units is allocated to the dust recovery unit. It is characterized in that.

  According to a second aspect of the present invention, in the first aspect, each cleaning unit includes a cleaning brush that contacts the air filter, and each of the cleaning brushes is inclined toward the dust collecting unit. It is characterized by being an inclined brush.

  According to a third aspect of the present invention, in the first or second aspect, each of the cleaning brushes includes an upper brush that contacts one surface of the air filter, and a lower brush that contacts the other surface of the air filter. And the upper brush and the lower brush are arranged to face each other with the air filter interposed therebetween.

  According to a fourth aspect of the present invention, in the first, second, or third aspect, the cleaning case is provided with a pressing unit that presses at least one of the upper brush and the lower brush toward the air filter side. It is characterized by being.

  According to a fifth aspect of the present invention, in any one of the third to fourth aspects, the cleaning case includes a bottom cover and a top cover that are combined so as to be openable and closable. The lower brush is supported on the bottom cover side, and the two upper brushes included in each cleaning unit are supported on the top cover side.

  According to a sixth aspect of the present invention, in the fifth aspect, the one upper brush is supported by a first rotating arm that is pivotally supported by the top cover, and the other upper brush is pivotally supported by the top cover. It is characterized by being supported by the second rotating arm.

  According to a seventh aspect of the present invention, in the sixth aspect of the present invention, a shaft fulcrum for the top cover of the first rotating arm is disposed on the other upper brush side, and the second rotating arm with respect to the top cover. The shaft fulcrum is arranged on the one upper brush side.

  The invention described in claim 8 is characterized in that, in the above-mentioned claim 4, a pressing cam that selectively operates according to the moving direction of the air filter is used as the pressing means.

  According to the first and third aspects of the present invention, the cleaning unit including the upper brush and the lower brush disposed to face each filter inlet / outlet of the cleaning case is provided, thereby allowing the air filter to enter and exit. The removed dust can be reliably prevented from being taken out of the cleaning case again.

  According to the second aspect of the present invention, both the upper brush and the lower brush in each cleaning unit are inclined brushes that are inclined toward the dust collection part side (the anti-filter entrance / exit side). Part of the garbage that could not be removed is scraped off with the brush on the exit side.

  According to the fourth aspect of the present invention, since at least one of the upper brush and the lower brush is pressed toward the air filter side by the pressing means, the air brush is ordered with respect to the moving direction of the air filter. Adhesion to the filter is further improved, and the lifting from the air filter can be suppressed for the reverse brush.

  According to the fifth aspect of the present invention, the cleaning case is configured by the bottom cover and the top cover combined so as to be openable and closable, the lower brush is supported on the bottom cover side, and the upper brush is supported on the top cover side. By doing so, the cleaning case can be easily attached to and detached from the air filter.

  According to the sixth aspect of the present invention, since the upper brush and the upper brush are supported by the top cover by the first rotating arm and the second rotating arm, respectively, the cleaning case is opened. When throwing away the collected garbage, the upper brush can be moved out of the way, and the inside of the cleaning case can be cleaned cleanly.

  According to the seventh aspect of the present invention, the pivot point for the top cover of the first rotating arm is disposed on the other upper brush side, whereas the pivot point for the top cover of the second pivot arm is one of the pivot points. Since it arrange | positions at the upper brush side, when making a brush support a top cover via a rotation arm, the width | variety of a cleaning case can be made narrower.

  According to the invention described in claim 8, by using a pressing cam that selectively operates according to the moving direction of the air filter as the pressing means of the brush, the brush pressure on the air filter can be more appropriately controlled. it can.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view showing an example of an air conditioner (indoor unit) according to the present invention.

  The indoor unit 1 includes a base panel 100 that is installed on a wall surface via a mounting bracket (not shown), and an upper panel 200 that is attached to the base panel 100 so as to cover the base panel 100 from the upper surface to the front surface. Both are made of molded products of synthetic resin.

  The base panel 100 includes a rear panel 110 parallel to the wall surface, and an under panel 120 formed so as to protrude from the lower end of the rear panel 110 toward the front surface, and is entirely formed in an L-shaped cross section. Yes.

  The base panel 100 stores a cross flow fan 2, a heat exchanger unit 3, a drain pan 4 and the like as a blower fan. A pair of left and right side plates (not shown) for supporting the heat exchanger unit 3 are provided at both ends of the base panel 100, and the heat exchanger unit 3 is spanned between the side plates.

  In this example, the heat exchanger unit 3 is formed by connecting three heat exchanger units 31 to 33 in combination with a lambda (Λ) shape, and is attached so as to cover the upper part of the cross flow fan 2.

  The top portions of the front side heat exchanger units 31 and 32 and the back side heat exchanger unit 33 are connected by a connecting plate 34. The connecting plate 34 also functions as a sealing plate for preventing the sucked air from bypassing the heat exchanger unit 3. Next to one side plate of the base panel 100, an electrical component box (not shown) in which various power supply devices for driving the indoor unit 1 and electronic components are stored is provided.

  The back panel 110 is formed with a dew receiving part 111 that receives drain water generated by the back side heat exchanger unit 32, and various pipes, electric wires, and the like are accommodated in the lower back of the dew receiving part 111. A storage portion 112 is provided.

  The under panel 120 is provided with an air outlet 121 for sending air toward the room by the blowing action of the cross flow fan 2. The air outlet 121 is provided with a diffuser (both not shown) that opens toward the floor during rapid heating or rapid cooling operation, for example, in addition to the vertical and horizontal wind direction plates for changing the air blowing direction. Good.

  A top panel 200 is attached to the base panel 100 so as to cover the heat exchanger unit 3. The top panel 200 is fixed to the upper end of the back panel 110 of the base panel 100 via a locking claw (not shown) provided on the rear end side, and the front end is stretched in an arch shape toward the front end side of the under panel 120. Yes.

  According to this example, the top panel 200 is provided with an air suction port 210 over almost the entire surface. The air inlet 210 may be formed in a grill bar shape, and the opening area thereof is preferably larger than the upper projected area of the heat exchanger unit 3.

  In this example, an open / close panel 220 that is pushed open by an air filter that moves toward the outside of the indoor unit is provided on the front surface of the top panel 200. The open / close panel 220 is rotatably supported around the upper end side. When the air filter 5 moves in the forward direction (when it is discharged toward the outside of the indoor unit), the other end side is supported by the air filter 5. As a result, the air filter 5 is pulled out of the indoor unit.

  As shown in FIG. 2, a driving motor (not shown) as a filter driving unit is further provided on the front surface of the upper panel 200, and a driving gear 6 connected to the driving motor is partly provided on the upper panel 200. A part of is exposed. The drive motor is controlled by the control means.

  Inside the top panel 200 (on the heat exchanger 30 side), an air filter 5 for capturing dust in the air is disposed along the air suction port 210. A rack gear (not shown) meshed with the drive gear 6 is provided on the back surface side (heat exchanger 3 side) of the air filter 5, and the air filter 5 reciprocates by the combination of the rack gear and the drive gear 6. To do.

  In this example, the air filter 5 is formed by attaching a net-like filter sheet to a synthetic resin frame, but may be a general air filter used in an air conditioner.

  A filter cleaning unit 300 that removes dust attached to the air filter 5 is provided between the top panel 200 and the open / close panel 220. In this example, two air filters 5 are installed in the indoor unit 1, and accordingly, the filter cleaning unit 300 is also installed in two places, but each filter cleaning unit 300 has the same configuration. One of them will be described.

  With reference to FIGS. 3 and 4, the filter cleaning unit 300 includes a dust box including a bottom cover 310 placed on the top panel 200 side and a top cover 330 that covers the bottom cover 310. When the dust box is made of a synthetic resin, the resin material preferably contains a fungicide or an antibacterial agent.

  As shown in FIG. 4, the bottom cover 310 and the top cover 330 are connected at one end side via a hinge portion 301 and can be opened and closed at the other end side. As shown in FIG. 2, sliding lock levers 302 for the bottom cover 310 are provided at both ends of the top cover 330.

  The bottom cover 310 is formed in the shape of a long and narrow pen dish having a storage space 311 in which dust can be stored. The bottom cover 310 has a length that is at least longer than the width of the air filter 5. Inside the bottom cover 310, a pair of first cleaning parts 320 a and 320 b that are in contact with the back surface side (heat exchanger side) of the air filter 5 are provided.

  Brush bases 321a and 321b are integrally formed on the bottom of the bottom cover 310, and the first cleaning parts 320a and 320b are substantially the lower brushes 322a and 322b implanted in the brush bases 321a and 321b. Consists of. A part of the storage space 311 serving as a dust collection unit is disposed between the first cleaning units 320a and 320b.

  The lower brushes 322a and 322b are inclined in directions facing each other. That is, as shown in FIG. 3, one lower brush 322a is inclined in the diagonally upward left direction, and the other lower brush 322b is inclined in the diagonally upward right direction.

  Referring to FIG. 4, first cleaning portions 320 a and 320 b (lower brushes 322 a and 322 b) are arranged at two locations along the longitudinal direction of bottom cover 310. In this example, the first cleaning parts 320a and 320b are divided into two (a total of four) by an escape groove 312 for releasing a frame (not shown) of the air filter 5 between them. One sheet may be provided along the longitudinal direction.

  Next, the top cover 330 is attached so as to close the periphery of the opening of the bottom cover 310, is formed in a box that is at least longer than the width of the air filter 5, and includes a hollow storage space 331 therein. .

  Bearing plates 311 and 311 are provided on both side surfaces of the connecting end side of the top cover 330, and a rotating shaft provided on the bearing plates 311 and 311 is supported in a bearing hole (both not shown) of the bottom cover 310. It is supported so that opening and closing is possible.

  In the storage space 331 of the top cover 330, second cleaning parts 340a and 340b are provided that contact the surface of the air filter 5 (the surface on the air suction port 210 side) to remove dust. As shown in FIG. 3, the second cleaning parts 340a and 340b are provided at positions facing the first cleaning parts 320a and 320b with the air filter 5 interposed therebetween.

  The second cleaning portions 340a and 340b are free of the arm portions (rotating arms) 341a and 341b having rotating shafts 342a and 342b that are rotatably supported on the top cover 330 on one end side, and the arm portions 341a and 341b, respectively. Brush bases 343a and 343b attached to the end side, and upper brushes 344a and 344b provided on the brush bases 343a and 343b are provided.

  As shown in FIG. 3, one arm portion 341 a is formed in an approximately L shape from the upper surface of the top cover 330 toward the open surface (lower surface), and includes a rotating shaft 342 a on one end side thereof. A brush base 343a is integrally formed on the other end side of the arm portion 341a.

  Similarly, the other arm portion 341b is formed in an approximately L shape from the upper surface of the top cover 330 toward the open surface (lower surface), and is provided with a rotating shaft 342b on one end side thereof. A brush base 343b is integrally formed on the other end side of the arm portion 341b.

  As shown in FIG. 3, the arm portions 341 a and 341 b are pivotally supported on the top surface of the top cover 330 so that they cross each other. That is, the rotating shaft 342a of the arm part 341a is installed on the upper side of the brush base 344b of the second cleaning unit 340b, and the rotating shaft 342b of the arm part 341b is installed on the upper side of the brush base 344a of the first cleaning unit 340a. Has been.

  One brush base 343a has a flat lower brush surface, and one upper brush 344a is provided on the brush surface. Similarly, the other brush base 343b has a flat lower brush surface, and the other upper brush 344b is provided on the brush surface.

  In this example, as shown in FIG. 4, one brush base 343a is divided into two along the length direction of the top cover 330, and each of them is a rotating shaft as shown in FIG. It is provided so as to open and close around 342a.

  Further, the other brush base 343b is composed of a single plate body formed along the length direction of the top cover 330, and is provided so as to open and close around the rotation shaft 342b as shown in FIG. .

  The upper brushes 344a and 344b are also inclined in the direction facing each other, like the lower brushes 322a and 322b. That is, one upper brush 344a is inclined so as to face obliquely downward to the left, and the other upper brush 344b is inclined so as to face obliquely downward to the right.

  3 and 5, according to this example, the brush bases 343a and 343b are always directed toward the air filter 5 (downward in FIG. 3) between the top cover 330 and the brush bases 343a and 343b. Compression springs 345a and 345b are provided as pressing means for pressing.

  The compression springs 345a and 345b are accommodated in a cylindrical holding portion 346 in which a part on the upper surface side (on the surface of the brush base 343a and 343b) provided on the top cover 330 is cut out. The compression springs 345a and 345b press the brush bases 343a and 343b in the direction of the air filter 5 via ribs 347 provided on the back side (anti-inclined brush side) of the brush bases 345a and 345b.

  Both end portions of the dust box composed of the top cover 330 and the bottom cover 310 are filter entrances 350a and 350b. The lower brush 322a of the first cleaning unit 320a and the upper brush 344a of the second cleaning unit 340a are used as a pair and used as the cleaning unit 300A on the side of the filter inlet / outlet 350a, and the lower brush 322b of the first cleaning unit 320b and the second brush 322b 2 The upper brush 344b of the cleaning unit 340b is paired and used as the cleaning unit 300B on the other filter entrance / exit 350b side.

  In this example, the first cleaning parts 320a and 320b are fixed, but may be spring-biased, and the variable lever mechanism employed in the second cleaning parts 340a and 340b may be similarly applied. . In this example, the upper brushes 344a and 344b and the lower brushes 322a and 322b are configured by bundling a large number of linear brushes. In addition to this, as shown in FIG. Those arranged along the moving direction of the air filter 5 may be used.

  Next, an example of the operation of the filter cleaning unit 300 will be described with reference to FIGS. Although part of the air filter 5 is always placed in the filter cleaning unit 300, FIG. 6A shows that the air filter 5 is drawn into the indoor unit 1 as shown in FIG. 1 and covers the air suction port of the top panel 200. It shows the state when

  When the air filter 5 is in the state of FIG. 6A, for example, when a filter cleaning instruction signal is issued from the remote controller, a motor (not shown) is driven, and the air filter 5 moves in the forward direction indicated by the left-pointing arrow in FIG. Start moving in the discharge direction). At this time, the filter inlet / outlet 350a is “inlet side”, and the other filter inlet / outlet 350b is “outlet side”.

  When moving in the forward direction, the air filter 5 moves in a so-called forward direction without reversing the inclination direction with respect to the lower brush 322a and the upper brush 344a included in the cleaning unit 300A on the inlet 350a side.

  The movable upper brush 344a is urged by the compression spring 345a so as to be in close contact with the air filter 5, but the movement of the air filter 5 is in the normal direction and the arm supporting the upper brush 344a. Due to the relationship with the axial position of the rotating shaft 342a of the portion 341a, the air filter 5 is more closely attached.

  By rubbing the air filter 5 with the lower brush 322a and the upper brush 344a, dust adhering to the air filter 5 is peeled off and collected by each brush. Further, the bristles of the brush are pierced into the mesh of the filter, so that dust accumulated in the eyes of the filter is scraped off.

  On the other hand, since the lower brush 322b and the upper brush 344b included in the cleaning unit 300B on the outlet 350b side are so-called reverse eyes opposite to the moving direction of the air filter 5, the movable upper brush 344b Due to the relationship with the axial position of the rotating shaft 342b of the arm portion 341b to be supported, the air filter 5 tries to float, but the lifting is prevented by the compression spring 345b.

  As a result, the dust scraped off by the cleaning unit 300A on the inlet 350a side is scraped off by the cleaning unit 300B on the outlet 350b side into the dust recovery unit 311 and the dust collected in the dust box of the filter cleaning unit 300 is removed from the air filter. 5 is not taken out indoors.

  When the forward movement of the air filter 5 is completed, a motor (not shown) rotates in the reverse direction, and this time the air filter 5 starts moving in the backward direction (storage direction) indicated by the right arrow in FIG. At this time, the filter inlet / outlet 350b is “inlet side”, and the filter inlet / outlet 350a is “outlet side”.

  When the air filter 5 moves in the backward direction, the cleaning unit 300B on the inlet 350b side operates in the same manner as the cleaning unit 300A in the forward movement described above, and the cleaning unit 300A on the outlet 350a side cleans in the forward movement described above. It operates similarly to the unit 300B.

  According to this, the dust remaining on the air filter 5 is cleaned and the brush is vibrated using the contact resistance with the air filter 5 to drop the dust sandwiched between the brushes into the dust box. So-called self-cleaning can be performed.

  When the inside of the filter cleaning unit 300 is filled with dust, the upper panel 200 is opened, the filter cleaning unit 300 is taken out and opened, and the dust accumulated therein is sucked and collected by a vacuum cleaner or the like.

  The upper brushes 344a and 344b may be fixed brushes similarly to the lower brushes 322a and 322b, and such a mode is also included in the present invention. However, as in the above example, the upper brushes 344a and 344b are compressed springs 345a and 345b. By making it movable against the urging force, the frictional resistance between the upper brush on the opposite side and the air filter 5 is reduced, so that the load on the motor can be reduced. Further, the lower brush side may be movable, the upper brush side may be fixed, and both the lower brush and the upper brush may be movable.

  As another example, as shown in FIG. 7, a pressing cam 360 can be used as a pressing means for the upper brush. The pressing cam 360 is used to more surely scrape off dust when the air filter 5 moves in the forward direction. Therefore, as shown in FIG. 7, the pressing cam 360 is preferably on the one cleaning unit 300A side (more preferably on the upper side). It is provided on the brush 340a side), but may be provided on the other cleaning unit 300B side as necessary. The following description is for the case where the pressing cam 360 is provided on the one cleaning unit 300A side, and the other cleaning unit 300B is not different from the above example.

  As shown in FIG. 7, the pressing cam 360 is disposed in the top cover 310 at a position facing the upper brush 344 a included in one cleaning unit 300 </ b> A, and its rotation is performed by a control unit (not shown) in the moving direction of the air filter 5. It is controlled according to.

  FIG. 7A shows the state when the air filter 5 is drawn into the indoor unit 1 and covers the air inlet of the top panel 200 as shown in FIG. In this initial state, the pressing cam 360 rotates to a position away from the upper brush 344a so as not to apply an excessive load to the upper brush 344a and the lower brush 322a.

  When the cleaning instruction signal is output and the air filter 5 starts moving in the forward direction indicated by the arrow in FIG. 7B, the pressing cam 360 rotates about 90 ° clockwise and presses the upper brush 344 a against the air filter 5. Accordingly, the air filter 5 is sandwiched between the upper brush 344a and the lower brush 322a with a force stronger than the urging force of the compression spring 345a.

  In this state, the air filter 5 is moved to the end as shown in FIG. 7C, and when the end of the air filter 5 is detected by a sensor (not shown), the movement of the air filter 5 is stopped, and FIG. As shown in FIG. 7, the pressing cam 360 is also rotated about 90 ° counterclockwise and returned to the position shown in FIG. In this state, the air filter 5 moves in the backward direction and is drawn into the indoor unit 1. The operation when moving in the backward direction is the same as the above example.

  When the pressing cam 360 is also provided on the other cleaning unit 300B side, the pressing cam 360 presses the upper brush 344b on the cleaning unit 300B side when the air filter 5 moves in the backward direction.

  As another example, since the pressing force of the pressing cam 360 can be adjusted by the rotation angle, only the pressing cam 360 can be used instead of the compression springs 345a and 345b. That is, of the upper brushes 344a and 344b, a strong force is applied to the upper brush on the inlet side of the air filter 5 by the pressing cam 360, and a pressing force by the pressing cam 360 is applied to the upper brush on the outlet side. Try to weaken.

  In the above example, the air filter 5 is moved with respect to the filter cleaning unit 300 as shown in FIG. 1, but the position of the air filter 5 is fixed and the filter cleaning unit 300 side is moved to the air filter. You may make it move along 5.

  The present invention has been described above by taking the indoor unit of the split type and ceiling wall type air conditioner in which the outdoor unit and the indoor unit are separated as an example, but the present invention is not limited to this. The present invention includes, for example, a floor-rise air conditioner, an integrated air conditioner in which an indoor unit and an outdoor unit are housed in a single housing, a gas combustion air conditioner, and a hot water circulation air conditioner in terms of heat sources. It can be widely used for an air conditioner having an air filter such as a machine.

Sectional drawing which shows an example of the air conditioner (indoor unit) by this invention. The disassembled perspective view which shows the state which removed the filter cleaning part of the said air conditioner. Sectional drawing of the principal part of the said filter cleaning part. The perspective view which shows the state which opened the said filter cleaning part. The perspective view which shows the state which further opened the brush stand of the top cover of the said filter cleaning part. Explanatory drawing for demonstrating operation | movement of the said filter cleaning part. Explanatory drawing for demonstrating the modification of the press means of the said filter cleaning part. The perspective view which shows the modification of a cleaning brush.

Explanation of symbols

1 Air conditioner (indoor unit)
2 Cross-flow fan 3 Heat exchanger unit 4 Drain pan 5 Air filter 6 Drive gear 100 Base panel 200 Top panel 300 Filter cleaning unit 300A, 300B Cleaning unit 310 Bottom cover 320a, 320b First cleaning unit 321a, 321b Brush stand 322a, 322b Lower brush 330 Top cover 340a, 340b Second cleaning part 341a, 341b Arm part 342a, 342b Rotating shaft 343a, 343b Brush base 344a, 344b Upper brush 345a, 345b Compression spring 350a, 350b Filter inlet / outlet 360 Press cam

Claims (8)

An indoor unit housing having an air inlet and an air outlet and having an air filter disposed inside the air inlet, the front and back surfaces of a part of the air filter being enclosed in the indoor unit housing A filter cleaning unit having a cleaning case, and a cleaning driving means for moving either the air filter or the filter cleaning unit are provided, and the air filter and the filter cleaning are performed by the cleaning driving unit. In the air conditioner for cleaning the air filter by relatively moving the part,
The filter cleaning unit includes a first cleaning unit disposed on one filter entrance / exit side of the cleaning case, and a second cleaning unit disposed on the other filter entrance / exit side of the cleaning case, and each of the cleaning units An air conditioner characterized in that the space is assigned to the garbage collection section.   2. The cleaning brushes that come into contact with the air filter are included in the cleaning units, and the cleaning brushes are inclined brushes that are inclined toward the dust collection unit. The air conditioner described.   Each cleaning brush includes an upper brush that contacts one surface of the air filter and a lower brush that contacts the other surface of the air filter, and sandwiches the air filter between the upper brush and the lower brush. The air conditioner according to claim 1, wherein the air conditioner is disposed so as to face each other.   4. The air according to claim 1, wherein the cleaning case is provided with pressing means for pressing at least one of the upper brush and the lower brush toward the air filter. Harmony machine.   The cleaning case includes a bottom cover and a top cover combined in an openable / closable manner, and the two lower brushes included in each cleaning unit are supported on the bottom cover side, and the two upper brushes included in each cleaning unit The air conditioner according to any one of claims 3 to 4, wherein each is supported on the top cover side.   The one upper brush is supported by a first rotating arm pivotally supported by the top cover, and the other upper brush is supported by a second rotating arm pivotally supported by the top cover. The air conditioner according to claim 5.   The pivot point of the first pivot arm with respect to the top cover is disposed on the other upper brush side, and the pivot point of the second pivot arm with respect to the top cover is disposed on the one upper brush side. The air conditioner according to claim 6.   The air conditioner according to claim 4, wherein a pressing cam that selectively operates according to a moving direction of the air filter is used as the pressing means.

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