JP2012032080A - Air filter, cleaning unit for the air filter, and air conditioner using them - Google Patents

Abstract

An air filter that has a constant bending rate and does not bend when the air filter is bent, has a small contact resistance with the air filter guide, and can be moved with a small force, and cleaning of the air filter Provided are an apparatus and an air conditioner including the same.
In an air filter that is detachably attached to a housing and captures dust in the air, the air filter includes vertical frames 42a and 42b provided on both sides, horizontal frames 43a and 43b provided on the front and rear sides, An air filter which is composed of a frame body 41 made up of ridges 44 and horizontal ridges 45 and a filter ventilation body provided on the frame body 41 and is orthogonal to the longitudinal direction on the back side of the vertical frames 42a and 42b of the frame body 41 of the air filter. A rack having the same shape as the rack is provided on the back side of the vertical rod 44 of the frame 41.
[Selection] Figure 3

Description

  The present invention includes an air filter that is provided at a suction port of a housing to capture dust and prevents the intrusion of dust into the housing, an air filter cleaning device that removes dust captured by the air filter, and the like. It relates to an air conditioner.

  A conventional air filter includes a filter mesh and a filter frame that supports four sides of the filter mesh. The filter frame includes a vertical frame that supports the side and a horizontal frame that supports the top and bottom. There is a structure in which concaves and convexes are provided in the vertical direction on both sides to form a wave shape as a whole, the vertical frame is thin and easy to bend, and the filter is easily bent (see, for example, Patent Document 1).

JP 2007-147123 A (4th, 5th page, FIG. 7)

  The air filter of Patent Document 1 is provided with unevenness that is perpendicular to the longitudinal direction on one surface of the vertical frames on both sides and meshes with the driving means of the air filter, and the other surface is similarly provided with unevenness. The vertical rib between the vertical frames is not provided with irregularities. For this reason, when the air filter is curved along the guide means, the curvature of the vertical frame provided with unevenness is different from that of the vertical saddle without unevenness, so the air filter cannot be bent uniformly. It was.

  For this reason, there is a problem in that the air filter is detached from the guide means, or the air filter is bent and caught on another structure, which may cause malfunction, and for this reason, the cleaning efficiency of the filter by the cleaning means is poor. There were problems such as. Furthermore, even if the air filter is disconnected from another structure, there is a problem that an abnormal noise is generated when the air filter is detached, which is not preferable.

  Further, the surface of the vertical frame of the air filter is provided with unevenness perpendicular to the longitudinal direction, and since the unevenness comes into contact with the guide means, the frictional resistance is large, so that the insertability into the guide means is not good. In addition, there is a problem that a large torque is required for the movement.

  The present invention has been made in order to solve the above-described problems. When the air filter is bent, the bending rate is constant and the bending does not occur, the contact resistance with the air filter guide is small, and the force is small. It is an object of the present invention to provide an air filter that can be moved smoothly, a cleaning device for the air filter, and an air conditioner including these.

  The present invention relates to an air filter that is detachably attached to a housing and captures dust in the air. The air filter includes a vertical frame provided on both sides, a horizontal frame provided on the front and rear sides, a vertical gutter, and a horizontal gutter. A frame body and a filter ventilation body provided on the frame body, and a rack for moving the air filter perpendicular to the longitudinal direction is provided on the back side of the vertical frame of the air filter frame body, and A rack having the same shape as that of the rack is provided on the back side of the vertical frame of the frame.

  An air filter cleaning device according to the present invention includes an air filter moving means for moving the air filter and a brush device for removing dust captured by the air filter.

  Moreover, the air conditioner which concerns on this invention is equipped with said air filter and an air filter cleaning apparatus.

  According to the present invention, an air filter that can be moved with a small force because the bending rate is constant and bending does not occur when the air filter is bent, and the contact resistance with the air filter guide is small. An air filter cleaning device and an air conditioner including these can be obtained.

It is typical sectional drawing of the air conditioner which concerns on one embodiment of this invention. It is a front view of the air filter of FIG. FIG. 3 is a rear perspective view of the air filter of FIG. 2. FIG. 3 is a partially enlarged view of the air filter and air filter guide of FIG. 2. FIG. 3 is a cross-sectional view of a vertical gutter and a horizontal gutter of the air filter of FIG. 2. It is a perspective view which shows the attachment condition of the air filter containing an air filter cleaning apparatus. FIG. 7 is a partially enlarged view of the back surface of FIG. 6. It is explanatory drawing of the rotation output part of FIG. 6, the air filter drive means connected with this, and the brush rocking | fluctuation means. It is a schematic diagram which shows a part of air filter drive means and a dust collection | recovery apparatus. FIG. 10 is an operation explanatory diagram of FIG. 9. It is action | operation explanatory drawing of the air filter drive means of FIG.

FIG. 1 is a schematic cross-sectional view of an air conditioner according to an embodiment of the present invention.
The air conditioner 100 according to the present invention includes a housing 1, a blower fan 20 that is installed in the housing 1 and sucks outside air, and blows the sucked air to the outside. A heat exchanger 30 that is installed in the air passage and harmonizes the sucked air, an air filter 40 that captures dust contained in the sucked air, and an air filter cleaning device 50 that cleans the air filter 40 are provided. Yes.

  The casing 1 is formed in a substantially cylindrical shape whose both ends are closed, an air suction port 2 is provided on the top surface, and a blowout port 3 that blows air sucked from the suction port 2 to the outside on the lower surface. Is provided. Further, the front side is opened, and a front panel 4 for opening and closing the opening is provided, and the back side is closed by a back plate 5.

  The blower fan 20 is installed at a substantially central portion in the housing 1 and forms an air passage from the suction port 2 to the blowout port 3. Note that the blow-out air path between the blower fan 20 and the blow-out port 3 is sandwiched between the nozzle 6 and the back guide plate 7 that forms part of the back plate 5. Reference numeral 8 denotes a wind direction plate provided at the outlet 3.

  A heat exchanger 30 is installed in the suction side air passage between the suction port 2 and the blower fan 20, and the heat exchanger 30 includes a heat exchanger 30a at the lower front side and a heat exchanger at the upper front side. 30b and a heat exchanger 30c on the back side, which is arranged so as to surround the blower fan 20 and air-conditions (cools, heats, humidifies, etc.) the air sucked from the suction port 2. The lower heat exchanger 30 a on the front side is installed above the nozzle 6. In the above description, the case where the heat exchanger 30 is arranged so as to surround the blower fan 20 is shown, but the arrangement of the heat exchanger 30 is not limited to this.

  As shown in the front view of FIG. 2 and the rear perspective view of FIG. 3, the air filter 40 includes left and right vertical frames 42a and 42b (hereinafter simply referred to as 42), upper and lower horizontal frames 43a, 43b, 1 A frame 41 made of a material having flexibility, such as a thermoplastic elastomer resin, and a rectangular shape having a depth direction longer than the left and right widths. The filter ventilation body (mesh-like body) 46 is made of PET fiber and is integrally formed by being inserted into the frame body 41.

A plurality of concavo-convex portions 47 are provided along the longitudinal direction on the front side of the vertical frames 42a and 42b of the air filter 40 (surfaces that are easily in contact with the air filter guide 10 described later). In this case, the number of the concavo-convex portions 47 and the size of the contact surface in contact with the air filter guide 10 must be selected in consideration of the durability of the contact portion and the contact friction.
Therefore, as shown in FIG. 4, the concavo-convex portion 47 has a trapezoidal cross-sectional shape, and the height h of the convex portion is desirably about 10 to 30% of the width w. Instead of the trapezoidal convex portion, an arc-shaped cross-sectional shape having a large curvature radius may be used.

Further, as shown in FIG. 5, the front side of the vertical rod 44 and the horizontal rod 45 is formed in a cross-sectional trapezoidal shape 47a or arcuate shape 47b along the longitudinal direction, and dust removal performance by the air filter cleaning device 50 described later. Is to keep good.
Further, on the back side of the vertical frames 42a and 42b and the vertical rod 44 of the air filter 40, as shown in FIG. 3, a rack 48 orthogonal to the longitudinal direction is provided over the entire length in the longitudinal direction.

  As shown in FIG. 1, the air filter 40 configured as described above is provided in an air filter guide 10 provided corresponding to the vertical frames 42 a and 42 b of the air filter 40 from the suction port 2 of the housing 1 to the upper part of the front surface. Installed along. In this case, the air filter 40 is formed in a flat plate shape at the time of molding. However, since the air filter 40 has flexibility when set in the housing 1, it is substantially C-shaped along the filter guide 10 as shown in FIG. It is held in a curved state.

  By the way, as shown in FIG. 1, the air filter guide 10 includes a top air filter guide 10a provided along the suction port 2 on the downstream side of the suction port 2, an upper air filter guide 10b following the top air filter guide 10b, and a front surface side. It consists of a front air filter guide 10c disposed over the lower surface of the side wall of the upper air filter guide 10b and a lower air filter guide 10d following the front air filter guide 10c. Further, a substantially semicircular winding guide rib 13 provided to face the side wall of the upper air filter guide 10b is provided continuously to the lower surface air filter guide 10d.

  FIG. 6 is a perspective view showing a mounting state of the air filter 40 including the air filter cleaning device 50, and FIG. 7 is a partially enlarged rear view of FIG. The two air filters 40a and 40b are set along the air filter guides 10 provided on both sides with the rotation output unit 60 interposed therebetween. Here, FIG. 6 shows the left and right air filters 40 and the like, but since both are substantially the same structure, the air filter 40 and the air filter cleaning device 50 on the left side of the figure will be described below. As shown in FIGS. 6 and 7, the air filter cleaning device 50 includes a motor or the like (not shown), and a rotation output unit 60 provided between the two air filters 40a and 40b. It consists of a dust collecting unit 70 that removes dust from the air filter 40 and collects it.

FIG. 8 is an explanatory diagram of the rotation output unit 6 of FIG. 6 and air filter driving means and brush swing means connected thereto.
A drive gear (pinion) 61 of the air filter 40 that is driven to rotate by the motor and a brush swing shaft 64 that is driven to swing by the motor are provided on both sides of the rotation output unit 60 incorporating a motor and the like. Reference numeral 63 denotes a gear drive shaft having a substantially convex cross section. One end is connected to the air filter drive gear 61 of the rotation output unit 60 and the other end is an air filter drive gear having the same size as the air filter drive gear 61. A (pinion) 62 is provided. When the air filter 40 is set in the housing 1, the air gear drive gears 61 and 62 are configured to mesh with racks 48 provided on the vertical frames 42a and 42b.

  Reference numeral 71 denotes a brush device, one end of which is connected to the brush swing shaft 64 of the rotation output unit 60 and is composed of a rod-shaped aluminum brush mounting shaft 72 with a brush 73 mounted in the longitudinal direction. In order to prevent the brush 73 from coming out, sleeves 74a and 74b are provided.

FIG. 9 is a schematic diagram showing a part of the driving means of the air filter 40 and the dust collecting device 70.
As shown in FIGS. 7 to 9, drive gears 61 and 62 of the air filter 40 provided on the gear drive shaft 63 are arranged inside the front air filter guide 10 c, and drive the front air filter guide 10 c and the air filter. By sandwiching the vertical frame 42 of the air filter 40 between the gears 61 and 62 and meshing the rack 48 provided on the vertical frame 42 with the drive gears 61 and 62 of the air filter, the air filter 40 is shown in FIG. It is held so that it can move in the direction of arrow a (or the direction of counter arrow a).

  As shown in FIG. 9, the brush device 71 has a hollow cylindrical brush mounting shaft 72 made of aluminum and provided with a convex brush fixing portion inside and a brush mounting groove in the longitudinal direction. A brush 73 having a substantially short rail shape is inserted and held in the brush mounting groove, and sleeves 74a and 74b for preventing the brush 73 from dropping off are provided at both ends thereof. The brush mounting shaft 72 is not limited to the structure shown in FIGS. 8 and 9, and may have another structure as long as the brush 73 can be fixed by being attached in the longitudinal direction.

  Both sides of the brush mounting shaft 72 are swingably supported on both side walls of the dust collection chamber 74, and the upper portion of the brush 73 extends from the upper portion of the dust collection chamber 75 to the longitudinal direction (width) of the lower surface of the front air filter guide 10c. It projects from the opening 11 provided in the direction).

  Then, a mechanism that reciprocally swings by 180 ° in conjunction with a motor provided in the rotation output unit 60 and a drive gear 61 of the air filter 40 by a transmission mechanism such as a gear (for example, the connection of the forward rotation gear and the reverse gear A mechanism that repeats the reverse movement by separating the forward gear and separating the forward rotation gear and connecting the reversing gear, or the forward motion by connecting the forward gear and the separation of the gear and a pre-installed flywheel. Etc.), and the brush swing shaft 64, and hence the brush mounting shaft 72, is configured to swing back and forth within a range of 180 °.

  The swing speed of the brush mounting shaft 72 at this time is selected so as to be faster than the moving speed of the air filter 40. That is, the moving speed of the air filter 40 <the moving speed of the brush 73 is set.

  The gear drive shaft 63 having the drive gears 61 and 62 of the air filter 40 connected to the rotation output unit 60 is rotatably supported on the rotation output unit 60 and the side wall of the housing 1, and the brush device 71 is attached to the rotation output unit 60. The dust collection part 70 including it is detachably attached to the lower part of the front filter guide 10c. The brush mounting shaft 72 is connected to the brush swing shaft 64 by engaging a sleeve 74b provided at one end thereof when the dust collecting unit 70 is mounted on the front filter guide 10c.

Next, the operation of the air conditioner 100 according to the present invention configured as described above will be described.
When the user turns on the power switch of the air conditioner 100, the operation is started. Thereafter, when the user turns off the power switch and issues an operation stop command, if the preset accumulated operation time is exceeded, the operation of the air conditioner is stopped and the air filter cleaning device 50 is operated.

In such an air filter cleaning device 50, first, the movement of the air filter 40 will be described.
With the operation of the air filter cleaning device 50, the motor of the rotation output unit 60 is rotationally driven, and this rotation is transmitted to the drive gears 61 and 62 of the air filter. Accordingly, the air filter 40 in which the rack 48 provided in the vertical frames 42a and 42b meshes with the drive gears 61 and 62 of the air filter moves along the air filter guide 10 in the direction of arrow a in FIG. And it is sent along the winding guide rib 13 from the lower air filter guide 10d, and as shown in FIG. 11, most of it is accommodated between the upper heat exchanger 30b and the upper air filter guide 10b.

At this time, the air filter 40 moves while being in contact with the air filter guide 10. However, since the air filter 40 moves in a limited space in the housing 1, a portion having a small curvature radius is generated, and the air filter 40. May be strongly pressed against the air filter guide 10.
For this reason, it is necessary to make the air filter 40 as flexible as possible so that it is easy to bend, and it is conceivable to reduce the thickness of the frame body 41 of the air filter 40. However, if it does in this way, if curvature radius becomes small, there will be a problem that resin which constitutes frame 41 will be whitened or intensity will fall.

  For this reason, in the present invention, a thermoplastic elastomer resin is used for the frame 41 of the air filter 40. Such thermoplastic elastomer resins are mainly used in which a rubber component is dispersed in a minute amount in order to provide flexibility. For this reason, the frictional resistance of the surface becomes larger than that of general ABS, and a large force is required to move the air filter 40 in contact with the air filter guide 10.

  Therefore, in the present invention, a plurality of concavo-convex portions 47 are provided along the longitudinal direction on the surfaces of the left and right vertical frames 42a and 42b of the frame body 41 of the air filter 40 that makes a large contact with the air filter guide 10, The contact area with the guide 10 is reduced, and the air filter 40 can be moved with a small force.

  In the moving means of the air filter 40 configured as described above, the gear drive shaft 63 having the air filter drive gears 61 and 62 at both ends is formed in a convex cross section. And the gear drive shaft 63 is connected to the convex portion and the air filter drive gear 62 is fitted to the convex portion and attached to the gear drive shaft 63. Therefore, when the air filter drive gears 61 and 62 are odd-numbered teeth It is possible to prevent the deviation of the left and right tooth positions. Although the figure shows a case where the gear drive shaft 63 has a convex cross-sectional shape, the present invention is not limited to this, as long as the tooth positions of the drive gears 61 and 62 of both air filters can be aligned. For example, other cross-sectional shapes may be used.

  In addition, the plurality of concavo-convex portions 47 provided in the longitudinal direction of the surfaces of the vertical frames 42a and 42b of the frame body 41 of the air filter 40 are continuous without the concavo-convex being reversed or interrupted in the middle of the longitudinal direction. Since it is provided in a line, even if there is a slight protrusion such as a small burr generated at the time of molding, it can be smoothly moved without being caught.

  Furthermore, as shown in FIG. 4, the uneven portions 47 provided in the longitudinal direction of the surfaces of the vertical frames 42a and 42b of the frame body 41 are not formed at an apex angle of 90 ° as in the cross-sectional shape of a normal groove. For example, since it has an uneven cross-sectional shape with an obtuse apex angle like a trapezoid, the movement of the air filter 40 in the moving direction (direction of arrow a or counter arrow a) is of course orthogonal to the moving direction. Even in the direction of movement (lateral movement), it can be moved smoothly without being affected by slight protrusions such as small burrs generated during molding. The same applies to the case where the cross-sectional shape of the uneven portion 47 is an arc.

Further, when the filter ventilation body 46 made of, for example, PET fiber is provided on the surface of the frame body 41, the thermoplastic elastomer resin constituting the frame body 41, in particular, the olefin-based elastomer resin is inexpensive, but with the PET fiber. It is easy to be separated from the frame body 41 because the fusing property is poor.
In the present invention, a filter ventilation body 46 made of PET fiber is inserted and molded into a vertical basket 44 and a horizontal basket 45, and the surfaces of the vertical basket 44 and the horizontal basket 45 are formed into a trapezoidal shape 46a or an arc 46b. It is. Thereby, the filter ventilation body 46 does not leave | separate from the frame 41, and the dust removal function by the air filter cleaning apparatus 50 can be maintained favorably.

  Further, as shown in FIGS. 3 and 7, the air filter 40 is moved to mesh with the drive gears 61 and 62 of the air filter on the back side of the vertical frames 42 a and 42 b of the frame body 41 constituting the air filter 40. Since the rack 48 is provided and the rack 48 is similarly provided on the back side of the vertical rod 44 that is not related to the movement of the air filter 40, the curved portions when the air filter 40 is bent are the same, and the bending rate is the same. Can be made constant, and even if the minimum radius of curvature of the moving trajectory of the air filter 40 is reduced, it can be easily followed, and the frame body 41 is not whitened.

  In this way, by making the bending rate of the air filter 40 constant, the air filter 40 is not bent when passing through the filter cleaning device 50 and does not hit one side, so that the contact of the brush 73 is constant. Thus, dust removal efficiency can be increased.

  Further, since the bending rate of the air filter 40 becomes constant and the bending does not occur, the air filter 40 does not come into contact with or comes off from the air filter guide 10 and can move smoothly. There will be no malfunction or abnormal noise due to contact with the structure. In the figure, the left and right vertical frames 42a and 42b provided with the rack 48 and the vertical rod 44 have different widths. However, they may be formed to have the same width. The force when the filter 40 is curved becomes constant, and the bending rate can be made more constant.

Next, the operation of the dust collection unit 70 of the filter cleaning device 50 will be described.
Simultaneously with the movement of the air filter 40, the brush device 71 is operated by the swing of the brush swing shaft 64 of the rotation output unit 60. As shown in FIG. 9, the brush device 71 swings 90 degrees forward and backward (left and right in the figure) with the state where the tip of the brush 73 faces upward as the center (dead point). That is, it swings from the state of FIG. 9 to the state of FIG.

  Since the tip of the brush 73 is disposed so as to protrude upward from the opening 11, the brush 73 reciprocally swings while being in sliding contact with the air filter vent 46 to scrape off dust adhering to the air filter 40. In this case, dust is removed without any problem when the brush swinging direction is opposite to the moving direction of the air filter 40, but even when the brush 73 swinging direction is the same as the moving direction of the air filter 40. As described above, since the swinging speed of the brush 73 is set faster than the moving speed of the air filter 40, dust can be removed without any problem in this case.

  The dust removed from the air filter 40 and adhering to the brush 73 comes into contact with one of the scraped pieces 12a and 12b provided in the longitudinal direction on both sides of the opening 11 of the front air filter guide 10c, and from the brush 73. It is scraped off and collected in the dust collection chamber 75 and accumulated.

  The air filter 40 moved in the direction of arrow a in FIG. 1 (hereinafter referred to as the forward direction) and wound on the take-up guide rib 13 is connected to this when the motor of the rotation output unit 60 rotates reversely in the state shown in FIG. The drive gears 61 and 62 of the air filter 40 thus rotated are rotated in the reverse direction, and the air filter 40 is moved in the direction of the opposite arrow a (hereinafter referred to as the reverse direction) to return to the original position.

  At this time, the brush oscillating shaft 64 provided in the rotation output unit 60 continues the oscillating motion to oscillate the brush mounting shaft 72 and reversely moves in the same direction as the air filter 40 moves in the forward direction. The air filter 40 that moves to the position is cleaned by the brush 73. Thus, the air filter 40 is always cleaned by the brush 73 during any movement in the forward and reverse directions.

  In this case, as shown in FIGS. 9 and 10, since the dust scraping pieces 12a and 12b are provided on both sides of the opening 11, the brush 73 is scraped off for each one-way process of reciprocating swinging. , 12b and dust adhering to the brush 73 is scraped off. For this reason, for example, it is possible to avoid a situation in which dust scraped off from the air filter 40 to the brush 73 on the forward path of reciprocating rocking adheres to the air filter 40 again on the return path. It can be reliably removed and recovered.

  Further, since the brush 73 has a short fence shape facing upward and reciprocally swings by 180 °, the mounting space for the brush device 71 can be reduced, and the brush 73 rotates like a conventional rotating brush that rotates 360 °. In addition, since the brush does not protrude downward, the dust collection chamber 75 can be made shallower (smaller), and in this way, the necessary volume of the dust collection chamber 75 is ensured as in the conventional case. be able to.

  For this reason, in this invention, the air filter cleaning apparatus 50 can be reduced in size conventionally, and the mounting space of the air filter cleaning apparatus 50 in the air conditioner 100 can be made small. Furthermore, since the air filter cleaning device 50 can be downsized, the air conditioner 100 itself can be downsized.

  In the present invention, in consideration of so-called variations such as the shape tolerances of each part and the assembly tolerances thereof, the reciprocating swing range of the brush 73 is substantially 180 °. The reciprocating rocking range of the brush rocking shaft 64 by the rotation output unit 60 may be set to be larger than 180 ° so as to be able to reciprocate within a range of 180 ° so as to absorb the variation. For example, the swing range of the brush swing shaft 64 provided in the rotation output unit 60 is provided with an allowance of a swing range of 5 ° in the front and rear in order to absorb variations, and the brush drive shaft 64 is in a range of 190 °. You may make it rock by.

  In the above description, the case where the brush 73 is reciprocally swung by 180 ° (reciprocating by 90 ° back and forth) has been described. However, the present invention is not limited to this, and the brush 73 is within a range of 180 ° or less. May be reciprocated. In this case, the force that blows up the dust accumulated in the dust collection chamber 75 is further weakened, and the dust can be reliably prevented from returning to the air filter 40.

  In the above description, the air filter cleaning device 50 starts operating immediately after the power switch of the air conditioner 100 is turned off. However, the present invention is not limited to this. For example, the air filter cleaning device 50 A dedicated switch may be provided separately, and when the switch is turned on, the operation of the air conditioner may be temporarily stopped and the air filter 40 may be cleaned by the air filter cleaning device 50.

  Furthermore, in the above description, the case where the present invention is implemented in the air conditioner 100 having the suction port 2 on the top surface side is shown, but for example, other structures such as an air conditioner having a suction port on the front side are shown. The present invention can also be implemented in an air conditioner.

  DESCRIPTION OF SYMBOLS 1 Housing | casing, 2 suction inlet, 3 outlet, 10 Air filter guide, 11 Opening part, 12a, 12b Scraping piece, 13 Winding guide rib, 20 Blower, 30 Heat exchanger, 40 Air filter, 41 Frame, 42a, 42b Vertical frame, 44 Vertical gutter, 45 Horizontal gutter, 46 Filter vent, 47 Concavity and convexity, 48 rack, 50 Air filter cleaning device, 60 Rotation output part, 61, 62 Air filter drive gear, 63 Gear drive shaft 64 Brush swing shaft, 70 Dust collection part, 72 Brush mounting shaft, 73 Brush, 75 Dust collection chamber, 100 Air conditioner.

Claims (8)

In the air filter that is detachably attached to the housing and captures dust in the air,
The air filter is composed of a vertical frame provided on both sides, a horizontal frame provided on the front and back, a vertical frame and a horizontal frame, and a filter ventilation body provided on the frame,
A rack for moving the air filter perpendicular to the longitudinal direction is provided on the back side of the vertical frame of the frame body of the air filter, and a rack having the same shape as the rack is provided on the back side of the vertical wall of the frame body. An air filter characterized by being provided.   The air filter according to claim 1, wherein a plurality of protrusions and depressions are provided in the longitudinal direction of the surface of the vertical frame of the frame body.   The air filter according to claim 2, wherein a cross-sectional shape of the concavo-convex portion provided in the vertical frame of the frame body is a trapezoidal shape or an arc shape.   The air filter according to any one of claims 1 to 3, wherein a cross-sectional shape of the vertical and horizontal surfaces of the frame is formed in a trapezoidal shape or an arc shape.   The air filter according to any one of claims 1 to 4, wherein the frame is made of a thermoplastic elastomer resin.   The air filter according to any one of claims 1 to 5, wherein the air filter ventilation body is made of PET fiber and is molded by being inserted into the frame body.   An air filter cleaning device comprising: an air filter moving means for moving the air filter according to any one of claims 1 to 6; and a brush device for removing dust captured by the air filter.   An air conditioner comprising the air filter according to any one of claims 1 to 6 and the air filter cleaning device according to claim 7.

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