JP2009115424A - Filter cleaning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filter cleaning device and an air conditioner loading the same, capable of improving cleaning efficiency of a filter. <P>SOLUTION: This filter cleaning device comprises a cleaning brush received in a dust removing box, an air current generating means generating air current in the dust removing box, and a moving means for relatively moving the filter in the direction orthogonal to the longitudinal direction with respect to the dust removing box, and a filter guide receiver for suppressing deflection of the filter is disposed at a side opposite to the cleaning brush through a filter guide passage of the dust removing box. As the deflection of the filter can be prevented by supporting even a soft filter by the guide receiver, the dust on a filter surface can be surely removed by the cleaning brush, and the cleaning efficiency can be improved. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a filter cleaning device that cleans a filter that removes dust in the air, and an air conditioner such as an air conditioner equipped with the filter cleaning device.

  Conventionally, as an air conditioner of this type, Patent Document 1 discloses a filter cleaning device in which a dust box having a brush for removing dust is disposed so as to contact a filter and the filter is moved to remove dust from the entire filter. Is disclosed.

In Patent Document 2, while moving the filter along the guide path of the dust removal box, the cleaning brush is driven to rotate and the dust adhering to the surface of the filter is forcibly separated, and the dust that has been lifted and separated is air-flowed. A filter cleaning device is disclosed in which the air is generated from the dust removing box by the air flow generated by the generating means.
JP 2005-188808 A JP 2007-183081 A

  However, in the air conditioners of Patent Documents 1 and 2, the filter is moved with respect to the dust box, and the filter is easily bent and soft, so the filter is pushed by the brush and bent to the opposite side of the brush. In this case, the dust adhering to the filter surface cannot be sufficiently scraped off.

  In particular, in the case of a method in which the filter moves along a U-shaped guide path as in Patent Document 2, since the filter is sufficiently bent and softly formed, it is easy to be pushed by a rotating brush. There is also a possibility that dust adhering to the filter cannot be scraped off sufficiently.

  In view of the above, an object of the present invention is to provide a filter cleaning device that can sufficiently clean dust adhering to a filter and has a large dust removing effect, and an air conditioner equipped with the filter cleaning device.

  In order to achieve the above object, the present invention provides a filter cleaning device for cleaning a filter that removes dust in the air, and a dust removal box that has a guide path for guiding the filter and generates an air flow path therein. The cleaning brush disposed along the length direction in the dust removal box and supported by the dust removal box, and the movement for moving the filter relative to the dust removal box in a direction perpendicular to the length direction. And a filter guide cradle that suppresses the deflection of the filter on the opposite side of the cleaning brush across the filter guide path of the dust removal box.

  According to the above configuration, while the filter is relatively moved along the guide path of the dust removal box, the dust attached to the surface of the filter is forcibly removed by the cleaning brush, and stubborn dirt stuck to the surface of the filter is also forced. Can be lifted and removed.

  At this time, a filter guide cradle is provided on the side opposite to the cleaning brush across the filter guide path of the dust removal box, so the filter is supported by the guide cradle even if the filter is soft. Thus, dust on the filter surface can be reliably removed, and cleaning efficiency can be improved.

  In this case, the structure which provides a guide stand along the length direction of a dust removal box may be sufficient. Moreover, the structure which provides two or more guide cradles at intervals may be sufficient. That is, a configuration in which a plurality of guide cradles are provided and the plurality of guide cradles are arranged at intervals along the length direction of the dust removal box is preferable.

  Moreover, when the rib is provided along the direction in which the filter relatively moves, the guide cradle is preferably arranged so as to face the rib. Thereby, a rib part can contact a guide cradle and can suppress a bending of a filter.

  In addition, air flow generating means for generating an air flow in the dust removal box is provided, and the guide cradle is arranged facing the filter guide path, and the side opposite to the filter guide path obstructs the flow of the air flow path. It is preferable that the setting is not made. As a result, the separated and floating dust can be discharged from the dust removal box to the outside by the air flow generated by the air flow generating means, and an air flow path can be secured on the side opposite to the guide path of the guide cradle. The dust can be efficiently discharged to the outside by the air flow.

  As a configuration of the guide cradle in this case, a configuration in which the plate-like member is disposed so as to face the filter guide path and an air flow path is secured between the plate-like member and the dust removal box can be exemplified. With the plate-like member, an air flow path can be easily secured on the side opposite to the guide path.

  The cleaning brush may be either a fixed brush or a rotating brush, but if a configuration is adopted in which the cleaning brush is rotatably accommodated in a dust removal box, dust adhering to the filter is scraped off by the rotation of the cleaning brush. Can be removed, improving the cleaning efficiency.

  The shape of the rotary cleaning brush is not particularly limited, but a rotary cleaning brush having a plurality of elastic blades arranged spirally with respect to the periphery of the rotation shaft can be exemplified. The dust on the filter surface can be reliably removed without damaging the filter by the plurality of elastic blades.

  In addition, a dust removal box can arrange | position the dust removal box of a front side and a dust removal box of a back side on both the front and back sides on both sides of a filter, and can use the clearance gap formed between them as a filter guide path. In this case, a cleaning brush is disposed on one side of the dust removal boxes on the front and back sides, and a guide cradle is disposed on the other side. The guide cradle can suppress the deflection of the filter, and the cleaning brush can reliably scrape off the dust adhering to the filter.

  In addition, if air flow generating means is provided to generate an air flow in the dust removal box, the front and back dust removal boxes can simultaneously suck both the front and back surfaces of the filter to generate an air flow. Can be improved.

  In addition, an air flow generating means for generating an air flow in the dust removal box is provided, the dust removal box is disposed across the filter, and an air intake formed on one end side in the filter transverse direction of the dust removal box as the air flow generation means. It can be comprised from an opening | mouth and the suction means connected to the other end side and attracting | sucking air.

  If the dust box is placed across the filter, air is sucked in from the air inlet at one end of the dust box and discharged outside from the other end, there is no need to suck air from the large air inlet as in the past. Therefore, it is possible to reduce the size of the apparatus without requiring an air flow generating means having a large air volume.

  This type of filter cleaning device is installed in an air conditioner that is interposed in an air passage extending from the suction port to the air outlet and removes dust in the air, thereby increasing the size of the air conditioner. A filter cleaning function can be added without doing so.

  The air conditioner is not particularly limited as long as it includes a filter that removes dust in the air. Examples thereof include an air conditioner, a humidifier, a dehumidifier, an air purifier, and a heater. Can do.

  According to the present invention, since the filter guide cradle is provided on the side opposite to the cleaning brush across the filter guide path of the dust removal box, the filter is supported by the guide cradle even if the filter is soft. The dust on the filter surface can be removed reliably, and the cleaning efficiency can be improved.

  Hereinafter, a filter cleaning device according to an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, an example will be described in which an indoor unit of a separate type air conditioner having an air conditioning function as a main function is used as an air conditioner, and the filter cleaning device according to the present invention is mounted on the indoor unit. FIG. 1 is an external perspective view of an indoor unit of an air conditioner, FIG. 2 is a perspective view showing a state in which the air guide panel of the indoor unit is opened downward, and FIG. 3 is a view of the indoor unit in the state of opening the air guide panel in FIG. 4 is a perspective view showing a state in which the cabinet of the indoor unit is removed, and FIG. 5 is a perspective view showing a state in which the filter is removed in FIG.

  As shown in FIGS. 1 and 2, the indoor unit 1 is formed in a box shape in which the cabinet 2 has a depth longer than the height, and has a curved surface from the front surface to the bottom surface. A suction port 4 is formed on the upper surface of the cabinet 2, and an outlet 5 is formed on the curved surface. Inside the cabinet 2, a filter 7, an indoor heat exchanger 8, and a blower fan 9 are arranged in this order in the ventilation path 6 extending from the suction port 4 to the blowout port 5, with the suction port 3 side being the upstream side. A filter cleaning device 10 for cleaning the filter 7 is provided.

  An air guide panel 11 that opens and closes the air outlet 5 is provided on the curved surface of the cabinet 2. The wind guide panel 11 is formed by a single curved panel. The width in the left-right direction of the wind guide panel 11 is set to be the same as the width in the left-right direction of the cabinet 2 and is set to be larger than the width in the left-right direction of the air outlet 5.

  The wind guide panel 11 opens in either the upper or lower direction by rotating in different directions around the upper and lower shafts 12 and 13. As shown in FIGS. 2 and 3, the air guide panel 11 opens downward around the lower shaft 12 during the cooling operation. In this downward opening posture, the wind guide panel 11 is connected to the lower wall of the air outlet 5, and a long nozzle is formed by the air guide panel 11 and the upper wall 5 a of the air outlet 5. The wind guide panel 11 guides the cool air obliquely upward and blows the cool air along the ceiling.

  Further, during the heating operation, the wind guide panel 11 opens upward around the upper shaft 13. In this upward-opening posture, the air guide panel 11 shields the front of the air outlet 5, holds down the warm air blown toward the front, and guides the warm air toward the floor surface. In the initial stage of the cooling operation, the air guide panel 11 is in the upwardly open posture, the cool air is blown out toward the floor surface, and rapid cooling is performed.

  The blower outlet 5 is provided with a wind direction plate 14 and an auxiliary louver 15. The wind direction plate 14 changes the direction of the wind in the left-right direction by changing the angle in the left-right direction. The auxiliary louver 15 is provided at the outlet portion of the blower outlet 5 in front of the wind direction plate 14, and changes the vertical angle according to the attitude of the wind guide panel 11 to change the vertical wind direction while rectifying the blown wind. Change.

  When the operation of the indoor unit is started, the blower fan 9 is activated and the indoor air is sucked from the suction port 4. The indoor air passes through the filter 7 and comes into contact with the indoor heat exchanger 8 to exchange heat. Harmonized room air is discharged from the outlet 5 into the room.

  The front portion of the cabinet 2 is formed to be openable and closable by a front panel 16. A filter guide 17 is formed inside the front panel 16. When the front panel 16 is lifted upward and opened, the tip of the filter guide 17 is rotated in conjunction with the front panel 16 to face forward, whereby the filter 7 can be detachably inserted. When the front panel 16 is closed, the tip of the filter guide 17 is also rotated downward in conjunction with it, so that the filter 7 is set in the cabinet 2.

  As shown in FIG. 2, the suction ports 4 are formed at two places on the left and right sides of the upper surface of the cabinet 2, and below that (near the downstream side) correspond to each suction port 4 as shown in FIG. 4. Thus, two filters 7 formed in a vertically long rectangle are arranged side by side. The length of the filter 7 in the horizontal direction is substantially the same as that of each suction port 4. The vertical length of the filter 7 is longer than the vertical length of the suction port 4, and the lower portion of the filter 7 is bent and held along the filter guide 17 with the front panel 16 closed.

  A filter cleaning device 10 that cleans the filter 7 includes a front dust removal box 20 (hereinafter also referred to as the front box 20) that covers the surface of the filter 7, and a back dust removal box 21 that covers the back surface of the filter 7 (hereinafter referred to as the back side). A cleaning brush 22 disposed along the length direction (hereinafter also referred to as a longitudinal direction) in the front and back boxes 20 and 21, and the front and back boxes 20 and 21. An air flow generating means 23 for generating an air flow, and a moving means 24 for moving the filter 7 relative to the front and back boxes 20 and 21 in a vertical direction perpendicular to the length direction (longitudinal direction) thereof. I have.

  As shown in FIG. 4, the front and back dust removal boxes 20, 21 sandwich the filter 7 portion slightly ahead of the suction port 4, i.e., near the boundary between the top panel on which the suction port 4 is formed and the front panel 16. The air is sucked from the suction port 4 so as not to prevent the air from passing through the filter 7.

  As shown in FIGS. 5 and 7, the front side box 20 and the back side box 21 are formed of half-divided cylindrical bodies that are elongated in the left-right direction, and extend in the longitudinal direction so as to cross two filters 7 arranged side by side. Are oriented in the horizontal direction of the filter. In addition, the openings 7 are arranged with a gap therebetween so that the opening end faces of the filter 7 are opposed to each other, and the gap 25 forms a part of the guide path 26 of the filter 7.

  In addition, an intake port 29 is formed on one end side in the longitudinal direction of the front side box 20 and the back side box 21, and the other end side is fitted and held in the suction pipe 27 with a gap between them. The other end side is connected to a suction fan 28 as a suction means, and these constitute an air flow generation means 23.

  That is, the front and back boxes 20 and 21 are arranged to face each other, thereby forming a box body in which an intake port is formed on one end side and a suction fan 28 is connected on the other end side, and the internal space is an air flow path. 30. The air flow path 30 has an intake port 29 of the box body as an inlet, and is configured to generate an air flow by sucking air from the inlet to the suction fan 28.

  Further, as shown in FIG. 7, an elastic sealing material 31 having a semi-cylindrical cross section is attached to the opening edge of the front side box 20, and the filter 7 is smoothly brought into contact with the filter 7 in the vertical direction. I can guide you.

  Moreover, the cleaning brush 22 is equipped in the front side box 20 which contacts the filter surface side where a filter is easy to get dirty among the front and back boxes 20 and 21. The cleaning brush 22 is disposed along the length direction (longitudinal direction) in the front side box 20 and is rotatably supported by the front side box 20.

  As shown in FIG. 6, the cleaning brush 22 is composed of a rotating shaft 22a and a plurality of (two in this embodiment) elastic blades 22b arranged in a spiral around the rotating shaft 22a. It is rotationally driven by the provided electric motor 32 (see FIG. 5).

  The rotary shaft 22a is rotatably supported by bearings 33 and 34 on both the suction port 29 side and the suction pipe 27 side on the other end, but the suction side bearing 34 portion communicates with the suction pipe 27 to remove dust. The dust sucked together with the air from the boxes 20 and 21 is set so as to flow out to the suction pipe 27 through the periphery of the suction side bearing 34.

  On the other hand, the elastic blade 22b is disposed so as to elastically contact the surface of the filter 7, and acts to scoop up and lift the dust adhering to the surface of the filter 7. As shown in FIG. 6, the elastic blade 22b is formed in a spiral winding of about two rounds along the axial direction of the rotating shaft 22a from the one end inlet 29 side to the other end side of the rotating shaft 22a. The elastic blade 22b is extended to the outer end side in the axial direction of the rotary shaft 22a at the other end on the suction pipe 27 side, and the extended portion 22c is positioned around the bearing portion 34 of the rotary shaft 22a. It is set so that dust that tends to accumulate on the bearing portion 34 flows out to the suction pipe 27 side.

  In addition, although the cleaning brush 22 showed the example arrange | positioned interiorly in the front side box 20, you may arrange | position in both the front side box 20 and the back side box 21 which oppose up and down, and may arrange | position in the back side box 20. Good.

  The dust removing box 20 that houses the cleaning brush 22 has an inner surface formed in a circular arc shape in accordance with the rotational shape of the cleaning brush 22. Moreover, the circular arc surface of the dust removal box 20 and the rotating outer circumference of the cleaning brush 22 are arranged concentrically.

  On the other hand, the back box 21 that does not accommodate the cleaning brush 22 is also formed in a semi-cylindrical air flow path 30 by recessing the central part of one plate material in a circular arc shape, and flat filter is provided on both front and rear sides The guide surface 36 and the widened surface 37 whose front and rear end portions are inclined outward make it easier for the filter 7 to enter the guide path 26 between the opposing front box 20 (FIG. 7). reference).

  FIG. 7 is a cross-sectional view showing an example in which a guide cradle for guiding the filter 7 is formed in the back box. A guide cradle 38 is handed over and fixed to the semicylindrical portion of the back box 21. A plurality of guide receiving bases 38 are arranged at intervals in the length direction (longitudinal direction) of the back box 21. The guide cradle 38 is disposed at a position facing the vertical rib 39 of the filter 7. Each guide cradle 38 is bent downward by a plate-like member at its front and rear ends (see FIG. 7, the front end on the left side of the drawing and the rear end on the right side of the drawing), and the bent piece is the air in the back box 21. It is welded and fixed to the inner wall forming the flow path. An air flow path 30 is secured on the back side (opposite the guide path 26) of the guide cradle 38 (plate member). And the front side (guide path 26 side) of the guide cradle 38 is flush with the flat guide surface 36 formed before and after the back box 21 so as to face the guide path 26 (gap 25) of the filter 7. Is formed. The guide cradle 38 may be formed in a cylindrical shape. In this case, the inside of the guide cradle 38 becomes a part of the air flow path 30.

  The filter 7 in contact with the cleaning brush 22 is easy to bend and soft for its moving purpose. Therefore, there is a possibility that the filter 7 is bent toward the back side box by being pushed by the cleaning brush 22. However, if there is a guide cradle 38, even if the cleaning brush 22 contacts the filter 7, the guide cradle 38 can suppress the deflection of the filter 7, so that dust on the filter surface can be removed more reliably. Cleaning efficiency can be improved.

  In the dust removal box, the box body is formed such that the front box 20 and the back box 21 are formed as separate bodies, and are arranged to face each other, but two slits are provided in the longitudinal direction of the cylindrical body. Thus, the front side box and the back side box can be integrally formed.

  The dust removal boxes 20 and 21 are formed long in the left-right direction across the suction ports 4 on both the left and right sides. However, as shown in FIG. It may be a structure. In this case, in order to prevent the elastic blade 22b of the cleaning brush 22 from rubbing against the reinforcing material 40 and generating noise, the concave portion 41 is formed by cutting out the central portion in the axial direction of the elastic blade 22b, and is reinforced during rotation. The material 40 may be avoided.

  As shown in FIGS. 7 to 9, the filter 7 includes a mesh filter 42 and a synthetic resin frame 43 provided around the mesh filter 42 to reinforce the mesh filter 42. The frame body 43 includes a vertical frame 43a and a horizontal frame 43b. Further, the filter 7 is reinforced with vertical ribs 39 and horizontal ribs 45. In FIG. 8, the mesh filter 42 is stretched in a portion represented by hatching.

  A plurality of the vertical ribs 39 and the horizontal ribs 45 are made of synthetic resin and formed on the back surface of the mesh filter 42 at equal intervals. The horizontal frame 43b and the horizontal rib 45 are formed in a projecting shape, that is, thick to prevent the filter 7 from warping or wavy, whereas the vertical frame 43a and the vertical rib 39 are formed in the horizontal frame 43b. And it is formed thinner than the lateral ribs 45. Thereby, the filter 7 can be easily bent in the vertical direction while maintaining the rigidity in the horizontal direction.

  A rack portion 46 is provided in the vertical direction on the outer edge portion of the vertical frame 43a. The rack portion 46 meshes with the pinion 50 which is the moving means 24 to reciprocate the filter 7 in the vertical direction. The rack portion 46 has a shape obtained by forming a strip-like material into a corrugated shape, and this peak portion functions as a rack. It has become.

  The horizontal rib 45 is in a straight line with any one of the many ridges of the rack portion 46, and maintains the flexibility of the filter 7 in the vertical direction. As described above, the mesh filter 42 that allows the air sucked from the suction port 4 to pass therethrough is stretched on the upper part of the filter 7, and a thin resin sheet 44 is used instead of the mesh filter 42 at the lower part of the filter 7. It has a structure that does not allow air to pass through. The resin sheet 44 is formed to be thin like the vertical ribs 39, thereby ensuring vertical flexibility over the entire filter 7.

  As shown in FIGS. 7 to 9, the surface side of the filter 7 (the front box 20 side in this embodiment) is substantially flat, and the vertical rib 39, the horizontal rib 45, and the rack are the filter 7. Are arranged on the back surface side (in this embodiment, on the back side box 21 side). By making the surface side flat, the dust attached to the filter 7 by the cleaning brush 22 can be efficiently removed.

  As shown in FIG. 5, the moving means 24 that reciprocates the filter 7 in the vertical direction includes a filter holding portion 47 that holds the filter 7 and a drive portion 49 that moves the filter 7 by a motor 48.

  As shown in FIG. 3, the filter holding portion 47 is composed of a pair of left and right guide paths 26 into which the left and right ends of the filter 7 can be inserted. As shown in FIG. 3, the guide path 26 is formed in a substantially U shape in a side view. As shown in FIG. 5, the filter holding portion 47 is provided along the suction port 4. The filter holding portion 47 is gently inclined downward on the front side of the suction port 4, and between the front side box 20 and the back side box 21. A U-shaped path that passes through and descends substantially vertically along the front panel 16 and then U-turns inward and rises toward the inlet 4 is formed. The filter guide 17 described above constitutes a part of the filter holding portion 47 with the front panel 16 closed.

  As shown in FIGS. 3 and 5, the drive unit 49 includes a motor 48, a drive gear 51 connected to the motor 48, and a pinion 50 that meshes with the drive gear 51. The pinion 50 is disposed so as to be partially exposed from the filter holding portion 47 near the box body and mesh with the rack on the back surface side of the rack portion 46 provided in the filter 7. The motor 48 is one for the two sets of drive units 49, and the drive gears arranged on the left and right sides are fixed to the same rotating shaft 53 connected to the motor 48, and are driven to rotate in synchronization with the left and right.

  When the filter 7 is set in the cabinet 2, the filter upper part is inserted into the filter holder 47 from the filter guide 17, and the filter 7 is arranged below the suction port 4. At this time, the gap 25 between the two boxes 20 and 21 is set to be slightly larger than the total thickness of the lateral rib 45 and the filter. Thereby, the filter 7 can be set smoothly without generating a large friction between the filter 7 and both the boxes 20 and 21.

  In the filter 7, horizontal ribs 45 are formed at substantially the same interval as the width of the boxes 20 and 21 (the distance between the opening end faces of the dust removal box). Thus, the lateral ribs 45 are positioned in the two gaps formed in the box body so as to close the gap. In this way, it is possible to form a cylindrical box body with no gap between the front side box 20, the back side box 21, and the lateral ribs 45 interposed therebetween.

  In the above configuration, when the air conditioner is operated, air is sucked from the suction port 4 of the cabinet 2 and dust in the air adheres to the surface of the mesh filter 42. In the indoor unit, a control unit including an input circuit, a CPU, a memory, and an output circuit is provided. For example, when it is determined that the operation time of the air conditioner has reached a predetermined time, an optical sensor, or the like When it is determined that the surface of the filter 7 is dirty based on the detection result of the dirt detection means, the filter 7 is cleaned by controlling the operation of the suction fan 28, the moving means 24, and the like.

  First, the moving means 24 is operated, and the filter 4 is moved in the vertical direction by the distance z between the horizontal ribs 21 and stopped. In this state, the suction fan 28 is operated, and air is sucked from the suction port 29 that is the inlet of the flow path 30 to the suction fan 28. At the same time, the cleaning brush 22 is rotated, the dust adhering to the surface of the filter 7 is lifted and lifted by the elastic blade 22b, and the dust is blown off by the air flow by the suction fan 28 to remove the dust.

  The dust removed by the suction fan 28 can be collected by installing a dust collection pack between the flow path 30 and the suction fan 28 or exhausted to the outside from the suction fan 28. Or you may collect by installing a dust collection pack in the exhaust port of the suction fan 28 to the outdoors. Thereafter, the filter 7 can be cleaned by repeating the above operation.

  Further, when the filter 7 is moved to the end by moving the filter 7 in the vertical direction, the filter 7 is bent and held in the filter holding portion 47, so that the filter 7 is not exposed to the outside of the indoor unit, and is aesthetically pleasing. There is no risk of damage. When cleaning is completed, the filter 7 is moved to the original position by the moving means 24.

  In this way, while moving the filter 7 along the guide path of the dust removal boxes 20 and 21, the cleaning brush 22 is rotationally driven to forcibly remove the dust adhering to the surface of the filter 7. Since the floating dust is discharged from the dust removal boxes 20 and 21 to the suction fan 28 side by the air flow generated by the air flow generating means, the dust adhering to the surface of the filter 7 can be forcedly lifted and removed. In addition, since the dust removal box 20 is formed in a circular arc shape in accordance with the rotational shape of the cleaning brush 22, the air resistance can be minimized and the cleaning efficiency can be improved.

  Further, a filter guide cradle 38 is provided on the opposite side of the cleaning brush 22 across the filter guide path 26 of the dust removal box, and the filter 7 is supported by the guide cradle 38 even if the filter 7 is soft. , The dust on the filter surface can be reliably removed, and the cleaning efficiency can be improved.

  Further, since the guide cradle 38 is disposed so as to oppose the vertical ribs 39 of the filter 7, the vertical ribs 39 can come into contact with the guide cradle 38 and the deflection of the filter 7 can be efficiently suppressed.

  In addition, the guide cradle 38 is composed of a plate-like member and is formed so as to extend in a direction orthogonal to the length direction (longitudinal direction) of the semi-cylindrical dust removal box 21, and therefore the filter guide path 26 of the dust removal box 21. The air flow path 30 can be ensured on the opposite side, and dust can be efficiently discharged to the outside by the air flow.

  The guide cradle 38 may be formed over the entire portion of the dust removal box 21 through which the filter 7 passes, and an opening may be provided in some places. From this opening, air flows into the air flow path 30 together with dust, and the dust can be discharged to the suction fan 28 side.

  Further, in the present embodiment, the front side (guide path 26 side) of the guide cradle 38 is a flat guide formed before and after the back box 21 so as to face the guide path 26 (gap 25) of the filter 7. Although formed so as to be flush with the surface 36, a configuration may be adopted in which dust is separated from the filter 7 in a state where the filter 7 is slightly bent with a slight step. Even in this state, the filter 7 can reduce the degree of bending as compared with the case where the guide cradle 38 is not provided, so that the cleaning efficiency of the filter 7 is improved.

  FIG. 10 is a perspective view showing a state in which the cabinet is removed in an indoor unit of an air conditioner that is another embodiment of the present invention. In the above embodiment, the filter is moved in the vertical direction, but in the present embodiment, a method of moving the dust removal boxes 20 and 21 and the cleaning brush 22 with respect to the filter 7 is adopted instead. Therefore, a U-shaped guide path for guiding the filter 7 is not necessary.

  Instead, the moving means 24 of the dust removal boxes 20 and 21 is required. The moving means 24 includes a drive unit 60 that moves the dust removal boxes 20 and 21 with respect to the filter 7 in the filter length direction (vertical direction in FIG. 10).

  The drive unit 60 includes a support unit 61 provided at the center or end of the dust removal boxes 20 and 21, and a drive belt 62 that reciprocates the support unit 61 along the vertical direction of the filter 7. The drive belt 62 is stretched between pulleys 63 and 64 arranged before and after the filter 7 and is driven in the vertical direction of the filter 7 by a motor (not shown).

  Thus, since the dust removal boxes 20 and 21 move, the suction pipe 27 connected to the dust boxes 20 and 21 needs to be constituted by a pipe having flexibility or stretchability. In the present embodiment, the base end portion of the suction pipe 27 is configured to be rotatable around the fan case of the suction fan 28 and is configured to easily follow the movement of the dust removal boxes 20 and 21.

  In the above configuration, the pipe-like suction pipe 27 can be moved as the dust removal boxes 20 and 21 move, and the dust in the dust removal box can be removed by the suction fan 28.

  Even in this case, a filter guide cradle 38 is provided on the opposite side of the cleaning brush 22 across the filter guide path 26 of the dust removal box, and the filter 7 is supported by the guide cradle 38 even if the filter 7 is soft. The bending of the filter 7 is eliminated, dust on the filter surface can be reliably removed, and the cleaning efficiency can be improved.

  The moving direction of the dust removal boxes 20 and 21 may be the vertical direction as in the above-described embodiment, or may be the left-right direction across the filter 7. In the case of the configuration in which the dust removal boxes 20 and 21 are moved in the vertical direction, the dust removal boxes 20 and 21 are horizontally long as illustrated, but in the case of the configuration in which the dust removal boxes 20 and 21 are moved in the horizontal direction, the shape of the dust removal box Is preferably vertically long.

  FIG. 11 is a sectional view of a dust removal box which is still another embodiment of the present invention, and FIG. 12 is a perspective view of the back side box. In the embodiment shown in FIGS. 1 to 9, the cross-sectional shape of the dust removal box is a semicircular arc shape. However, in this embodiment, both the front side box 20 and the back side box 21 are formed in a half square cylinder shape.

  Thus, the dust removal boxes 20 and 21 are not limited to the cylindrical shape as in the above embodiment, and various cross-sectional shapes can be employed. Since other configurations are the same as those of the above embodiment, the description thereof is omitted.

  Note that the present invention is not limited to the above-described embodiment, and it is needless to say that many modifications and changes can be made within the scope of the present invention. For example, in the present embodiment, one end side in the longitudinal direction of the box body constituted by the front side box 20 and the back side box 21 is the intake port 29 that is fully open, but the opening area of the intake port may be reduced. Is possible. In this case, the flow velocity of the air flowing through the flow path 30 can be increased, and dust attached to the filter surface can be efficiently removed. Furthermore, although the horizontal ribs 45 formed on the surface of the filter 7 are formed at substantially the same intervals as the widths of both boxes 20 and 21, they can be formed at intervals that equally divide the intervals.

The perspective view of the indoor unit of the air conditioner which shows embodiment of this invention The perspective view which shows the open state of the air guide panel of an indoor unit Side surface sectional drawing of the indoor unit in the air guide panel lower open state of FIG. The perspective view which shows the state which removed the cabinet of the indoor unit The perspective view which shows the state which removed the filter in FIG. The exploded perspective view which looked at the front side box from the bottom side Cross section of dust removal box The top view seen from the surface side which shows the arrangement state of a back side box and two right and left filters Enlarged plan view of the filter viewed from the front side The perspective view which shows the state which removed the cabinet in the indoor unit of the air conditioner which is another embodiment of this invention. Sectional drawing of the dust removal box which is another embodiment of this invention A perspective view of the back box

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Indoor unit 2 Cabinet 4 Suction port 5 Air outlet 6 Ventilation path 7 Filter 8 Indoor heat exchanger 9 Blower fan 10 Filter cleaning device 11 Air guide panel 12 Lower shaft 13 Upper shaft 14 Wind direction plate 15 Auxiliary louver 16 Front panel 17 Filter guide 20 Front side box 21 Back side box 22 Cleaning brush 23 Air flow generating means 24 Moving means 25 Gap 26 Guide path 27 Suction pipe 28 Suction fan 29 Intake port 30 Air flow path 31 Elastic seal material 32 Electric motor 33, 34 Bearing 36 Filter guide surface 37 Expanded surface 38 Guide receiving base 39 Vertical rib 40 Reinforcement material 42 Mesh filter 43 Frame body 43a Vertical frame 43b Horizontal frame 44 Resin sheet 45 Horizontal rib 46 Rack part 47 Filter holding part 48 Motor 49 Drive part 50 Pinion 60 Drive part 61 Supporting part 62 Moving belt 63, 64 pulley

Claims (8)

A filter cleaning device for cleaning a filter for removing dust in the air, a dust removal box having a guide path for guiding the filter and generating an air flow path therein, and a length direction in the dust removal box And a cleaning brush supported by the dust removal box, and a moving means for moving the filter relative to the dust removal box in a direction perpendicular to the length direction thereof, the filter guide of the dust removal box A filter cleaning device, wherein a filter guide cradle is provided on a side opposite to the cleaning brush across a path to suppress bending of the filter. The filter cleaning apparatus according to claim 1, wherein a plurality of the guide cradles are provided, and the plurality of guide cradles are arranged at intervals along the length direction of the dust removal box. The filter cleaning apparatus according to claim 2, wherein the filter is provided with ribs along a relatively moving direction, and the guide cradle is disposed to face the ribs. An air flow generating means for generating an air flow in the dust removal box is provided, and the guide cradle is disposed facing the filter guide path, and the side opposite to the filter guide path does not obstruct the flow of the air flow path. The filter cleaning device according to claim 1, wherein the filter cleaning device is set as described above. 5. The filter according to claim 4, wherein the guide cradle is disposed so that the plate-like member faces the filter guide path, and an air flow path is secured between the plate-like member and the dust removal box. Cleaning device. The dust removal boxes are disposed on both sides of the front and back sides of the filter, and a gap formed between the front side dust removal box and the rear side dust removal box is used as a filter guide path. The filter cleaning apparatus according to claim 1, wherein a cleaning brush is disposed on the side and a guide cradle is disposed on the other side. An air flow generating means for generating an air flow in the dust removal box, the dust removal box being arranged so as to cross the filter, and an air intake formed on one end side of the dust removal box in the filter transverse direction as the air flow generation means 2. The filter cleaning device according to claim 1, wherein the filter cleaning device comprises a mouth and suction means connected to the other end side for sucking air. In the air conditioning apparatus provided with the filter which removes the dust in air in the air passage from the suction inlet of a cabinet to a blower outlet, the cleaning apparatus in any one of Claims 1-7 which mounts the said filter was mounted. An air conditioner characterized by that.

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