JP2016038167A - Filter cleaning device for air conditioner, and air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize indoor equipment while securing a space for providing a stopper member and the like in a dust box of a filter cleaning device for an air conditioner.SOLUTION: In a filter cleaning device 15, a device body movably accommodates a filter for capturing dust in the air. A dust box 26 is detachably attached to a front surface of the device body, and the dust captured by the filter is stored therein. A recess depressed in the direction of reducing the volume of a space for storing the dust in the dust box 26 is formed in a wall plate forming the space for storing the dust therein.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a filter cleaning device for an air conditioner and an air conditioner. The present invention, for example, air that removes dust, dust, lint, etc. (collectively referred to as “dust”) captured by an air filter (also simply referred to as “filter”) installed in an indoor unit of an air conditioner. The present invention relates to a filter cleaning device.

  As a conventional filter cleaning device, an air filter that is movably disposed in an air passage formed inside an indoor unit of an air conditioner, a filter guide that conveys the air filter while guiding it, and a detachable installation Some have a dust box (see, for example, Patent Document 1 and Patent Document 2). A part of the filter guide is between the air filter and the front panel, and serves as a front filter guide (also simply referred to as “filter guide”) serving as an air filter conveyance path. The dust box has a brush for automatically cleaning the air filter.

JP 2007-93147 A JP 2009-144972 A

The conventional filter cleaning device has the following problems.
(1) The front filter guide is a movable member. A stopper member is used to fix the front filter guide at a predetermined position. If the user forgets to operate the stopper parts, the front filter guide may move back and forth, the air filter may float, and the air filter may come off the transport gear, which may hinder transport.
(2) When the user takes out the air filter, the air filter must be exposed. Therefore, the front filter guide is flipped up from the predetermined position in the top surface direction. However, in order to maintain this state, the user must support the front filter guide by hand or the front filter guide must be fixed by some fixing mechanism.
(3) The structure of the stopper member for fixing the front filter guide is complicated, and the number of parts is large, so the cost is high.
(4) Even when the user securely stops the stopper member, since the fitting of the movable part of the stopper member is poor, the front filter guide moves slightly back and forth while the air filter is being conveyed. Therefore, the meshing between the air filter and the gear becomes sweet, and there is a concern that the air filter may come off from the transport gear.
(5) Stopper members for fixing the front filter guide are on both sides. Therefore, although both sides are fixed, since the center part of the front filter guide is not fixed, only the center moves slightly back and forth. Therefore, the meshing between the air filter and the gear becomes sweet, and there is a concern that the air filter may come off from the transport gear.
(6) When installing an air purifying filter that can be maintained, it is difficult to know the proper position, so the user cannot reliably install the air purifying filter at the proper position.
(7) The dust box is rectangular and takes up space. In particular, the dust box takes up too much space in the height direction, and the height dimension of the indoor unit increases.
(8) When the dust box is formed integrally with the front filter guide, the above-described stopper member is attached to the dust box side. Since the stopper member takes a space in the depth direction, the depth dimension of the indoor unit increases.

  An object of the present invention is to reduce the size of an indoor unit while securing a space for providing a stopper member or the like in a dust box of a filter cleaning device of an air conditioner, for example.

A filter cleaning device for an air conditioner according to an aspect of the present invention includes:
A device main body that movably houses a filter that captures dust in the air,
A dust box that is detachably attached to the front surface of the apparatus main body and stores dust captured by the filter;
The wall plate that forms the space for storing dust in the dust box is formed with a recess that is recessed in a direction that reduces the volume of the space.

  In the filter cleaning device for an air conditioner according to the present invention, a recess that is recessed in the direction of decreasing the volume of the space is formed on the wall plate that forms a space for storing dust in the dust box. For this reason, according to this invention, an indoor unit can be reduced in size, ensuring the space which provides a stopper member etc. in a dust box (inside a recessed part).

Sectional drawing of the indoor unit of the air conditioner which concerns on Embodiment 1. FIG. 1 is a perspective view of a filter cleaning device according to Embodiment 1. FIG. Sectional drawing of the filter cleaning apparatus which concerns on Embodiment 1. FIG. 2 is an exploded perspective view of the filter cleaning device according to Embodiment 1. FIG. FIG. 3 is a partial perspective view showing a closed state of the front filter guide of the filter cleaning device according to the first embodiment. FIG. 3 is a partial perspective view showing an open state of a front filter guide of the filter cleaning device according to the first embodiment. FIG. 3 is a perspective view of a front filter guide of the filter cleaning device according to the first embodiment. FIG. 3 is a perspective view of a front filter guide of the filter cleaning device according to the first embodiment. FIG. 3 is a perspective view of a dust box of the filter cleaning device according to the first embodiment. FIG. 3 is a perspective view of a dust box of the filter cleaning device according to the first embodiment. FIG. 3 is a perspective view of a dust box of the filter cleaning device according to the first embodiment. Sectional drawing of the dust box of the filter cleaning apparatus which concerns on Embodiment 1. FIG. Sectional drawing of the dust box of the filter cleaning apparatus which concerns on Embodiment 1. FIG. Sectional drawing of the dust box of the filter cleaning apparatus which concerns on Embodiment 1. FIG. Sectional drawing of the dust box of the filter cleaning apparatus which concerns on Embodiment 1. FIG. The perspective view which cut | disconnected the dust box of the filter cleaning apparatus which concerns on Embodiment 1, and showed only the lower part of the dust box. FIG. 3 is a perspective view of the air purification filter according to Embodiment 1.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the part which is the same or corresponds in each figure. In the description of the embodiments, the description of the same or corresponding parts will be omitted or simplified as appropriate. Moreover, about the structure of an apparatus, an instrument, components, etc., the material, a shape, a magnitude | size, etc. can be suitably changed within the scope of the present invention.

Embodiment 1 FIG.
FIG. 1 is a cross-sectional view of an indoor unit 10 for an air conditioner according to the present embodiment.

  As shown in FIG. 1, an indoor unit 10 of an air conditioner includes an indoor unit main body 11 (housing), a blower fan 12 that is installed inside the indoor unit main body 11 and sucks air and blows out the sucked air. The heat exchangers 13a, 13b, 13c arranged in the air passage formed by the blower fan 12 and harmonizing the sucked air, the left and right air filters 14 for capturing dust contained in the sucked air, and the left and right air Left and right filter cleaning devices 15 for cleaning the filters 14 are provided.

  The front-side upper heat exchanger 13a, the front-side lower heat exchanger 13b, and the rear-side heat exchanger 13c are blowouts for blowing out conditioned room air from the air inlet 16 for sucking room air. It arrange | positions so that the ventilation fan 12 may be enclosed in the air path which leads to the exit 17. FIG. The heat exchangers 13a, 13b, and 13c harmonize (cool, heat, dehumidify, etc.) the sucked air. Below the heat exchanger 13b on the lower side on the front side, a nozzle 18 that serves both to collect condensed water and to form an air passage is disposed. In the present embodiment, the heat exchangers 13a, 13b, and 13c are arranged so as to surround the top surface side and the front surface side of the blower fan 12, but other arrangement forms may be adopted.

  The suction port 16 is provided on the upper surface side of the indoor unit body 11. The air outlet 17 is provided on the lower surface side of the indoor unit body 11. The direction and size of the opening of the air outlet 17 are adjusted by the up-and-down air direction variable vanes 19. Behind the air outlet 17, a left and right airflow direction variable vane (not shown) is provided.

  The air filter 14 is disposed between the suction port 16 of the indoor unit main body 11 and the heat exchangers 13 a and 13 c on the front side and the rear side so as to cover the entire suction port 16.

  The filter cleaning device 15 is installed between the heat exchangers 13 a and 13 b on the front side upper stage and the front side lower stage and the front panel 20 in the upper part on the front side of the indoor unit body 11. In the present embodiment, a total of two filter cleaning devices 15 are installed on the left and right, but the number of filter cleaning devices 15 can be appropriately changed according to the number of air filters 14. For example, the air filter 14 may be a single sheet and only one filter cleaning device 15 may be installed. Alternatively, three or more air filters 14 and three or more filter cleaning devices 15 may be installed.

  The indoor unit 10 of the air conditioner further includes left and right air purification filters 21 that purify the air that has passed through the air filter 14.

  The air purifying filter 21 is disposed on the upstream side of the heat exchangers 13 a and 13 b on the front side upper stage and the front side lower stage of the indoor unit body 11. In the present embodiment, two air purification filters 21 are installed, one on each of the left and right sides, but the number of air purification filters 21 can be changed as appropriate. The air cleaning filter 21 may be omitted. Further, instead of the air purification filter 21, an air purification device (air purifier) may be used.

  Here, the operation of the air conditioner will be described.

  When the power is turned on, the compressor (not shown) compresses and discharges the refrigerant in the outdoor unit (not shown) of the air conditioner.

  In the indoor unit 10 of the air conditioner, the refrigerant discharged from the compressor flows into the heat exchangers 13a, 13b, and 13c. When the blower fan 12 rotates, the room air sucked from the suction port 16 is subjected to heat exchange with the refrigerant by the heat exchangers 13a, 13b, and 13c after dust is removed through the air filter 14. At this time, the air that passes through the heat exchangers 13a, 13b, and 13c from the upstream side to the downstream side is purified by the air purification filter 21.

  The indoor air heat-exchanged by the heat exchangers 13a, 13b, 13c is blown out into the room from the blowout port 17. At this time, air is blown out in a direction corresponding to the angles of the up / down air direction variable vane 19 and the left / right air direction variable vane. A user (user) of the air conditioner can manually or remotely set the angles of the up / down air direction variable vane 19 and the left / right air direction variable vane. When the air conditioner indoor unit 10 includes an infrared sensor (not shown), the air conditioner indoor unit 10 automatically detects the temperature distribution in the room, the position of the person, and the like to automatically move up and down. The angles of the wind direction variable vane 19 and the left and right wind direction variable vanes can also be adjusted.

  The series of operations described above are repeated. As a result, the room air is continuously cooled or warmed by removing dust. Thereby, indoor air quality changes.

  FIG. 2 is a perspective view of the filter cleaning device 15. FIG. 3 is a cross-sectional view of the filter cleaning device 15. FIG. 4 is an exploded perspective view of the filter cleaning device 15. FIG. 4 also shows the air filter 14 housed in the filter cleaning device 15 and the air purification filter 21 held by the filter cleaning device 15.

  As shown in FIGS. 2 to 4, the filter cleaning device 15 includes an air filter transport guide 22, an air filter storage guide 23 and an air filter transport cover 24 installed in the air filter transport guide 22, and an air filter transport guide 22. The front filter guide 25 and the dust box 26 installed in

  The air filter conveyance guide 22 includes a pair of conveyance guide side plates facing each other, a conveyance guide vertical beam extending on the same surface from the conveyance guide side plate, and a conveyance guide horizontal beam connecting the conveyance guide side plates and the conveyance guide vertical beams. And a conveyance guide reinforcing bar for connecting a part of the conveyance guide horizontal bars.

  On the pair of conveyance guide side plates opposed to the air filter conveyance guide 22, air filter drive shafts that are rotatably supported at both ends are installed. On the side of the conveyance guide side plate where the air filter drive shaft (same as the moving shaft) is not installed, a drive motor that rotates the air filter drive shaft is installed. And the conveyance gear 27 which meshes with the air filter driven rack formed in the air filter 14 is installed in the air filter drive shaft.

  A conveyance guide vertical flange for forming a conveyance guide groove into which the side edge of the air filter 14 can freely enter is installed on the mutually opposing surfaces of the conveyance guide vertical beam of the air filter conveyance guide 22.

  The air filter transport cover 24 is a frame body arranged in the air passage. The air filter transport cover 24 includes a pair of transport cover vertical beams, a transport cover horizontal beam that connects the transport cover vertical beams, and a transport cover reinforcing beam that connects the transport cover horizontal beams.

  A transport cover vertical flange for forming a transport guide groove into which the side edge of the air filter 14 can freely enter is installed on the mutually facing surfaces of the transport cover vertical beam of the air filter transport cover 24.

  The conveyance cover vertical beam of the air filter conveyance cover 24 and the conveyance guide vertical beam of the air filter conveyance guide 22 are joined (precisely, the left conveyance cover vertical beam is conveyed on the left side of the left air filter conveyance guide 22). The right conveyance cover stringer is joined to the right conveyance guide vertical beam of the right air filter conveyance guide 22). At this time, the former conveyance cover vertical flange and the latter conveyance guide vertical flange oppose each other with a predetermined interval, and the conveyance guide groove into which the side edge of the air filter 14 can enter is formed by the interval. . Since the air filter 14 can enter the space between the transport cover reinforcing beam and the transport guide reinforcing bar, guide means corresponding to the transport guide groove is formed by the transport cover reinforcing beam and the transport guide reinforcing bar. It is formed.

  The air filter storage guide 23 is formed on a pair of storage guide side plates facing each other, a storage guide notch portion into which the air filter drive shaft enters, and a storage guide side plate connecting the storage guide side plates. And a storage guide reinforcing bar for connecting a part of the storage guide side rails.

  On the mutually opposing surfaces of the storage guide side plates of the air filter storage guide 23, storage guide grooves into which the side edges of the air filter 14 can enter are formed. The storage guide groove has a substantially spiral shape, and is composed of a linear portion whose one end is close to the storage guide notch portion and a substantially arc-shaped portion of about one and a half turns continuous to the linear portion.

  The air filter 14 is composed of a rectangular air filter vent (mesh) and an air filter frame. The back surface of the pair of air filter vertical rails (the surface on which the air filter ventilator is not installed) that forms the outline of the air filter 14 is formed with an uneven pattern at equal intervals in the longitudinal direction (vertical direction). An air filter driven rack is formed (not limited to an exact tooth profile).

  Here, the operation of moving the air filter 14 will be described.

  The air filter conveyance guide 22 is disposed near the upper surface on the front side of the indoor unit body 11 and along the suction port 16 on the upper surface. An air filter storage guide 23 is installed on the transport guide side plate of the air filter transport guide 22, the storage guide notch of the air filter storage guide 23 is at the front side, and the storage guide groove is behind it (close to the heat exchanger 13 a). ). Further, an air filter transport cover 24 is installed on the transport guide vertical rail of the air filter transport guide 22.

  Accordingly, the side edge of the air filter 14 enters most of the air filter 14 in a state in which it enters the conveyance guide groove that is a gap between the conveyance guide vertical flange of the air filter conveyance guide 22 and the conveyance cover vertical flange of the air filter conveyance cover 24. The range of is rewound (expanded). At this time, one end portion (tip portion) of the air filter 14 presents a substantially circular arc with a small radius of curvature in a side view while being sandwiched between the upper surface portion of the dust box 26 and the transport gear 27.

  When the conveyance gear 27 rotates (forward rotation), both side edges of the air filter 14 are sent out toward the storage guide groove. The tip of the air filter 14 is initially guided by the linear portion of the storage guide groove and moves in a substantially linear shape. However, when it reaches the substantially arc-shaped portion of the storage guide groove, it moves in a spiral shape (arc shape). To do. When the other end (rear end) of the air filter 14 approaches the transport gear 27, most of the air filter 14 is wound in a substantially spiral shape of about one and a half turns. During this movement, the air filter ventilation body of the air filter 14 is brought into contact with the dust removing brush of the dust box 26 on the windward side of the air path, and dust removal is executed.

  On the other hand, when the transport gear 27 rotates (reverses) in the opposite direction, the air filter 14 is rewound, and both side edges of the air filter 14 are sent out to the transport guide groove. When the air filter 14 covers the entire area of the air path, the rotation of the transport gear 27 stops. At this time, a part of the air filter driven rack of the air filter 14 meshes with the transport gear 27.

  As described above, the air filter transport guide 22 and the air filter transport cover 24 (device main body of the filter cleaning device 15) movably store the air filter 14 (filter) that captures dust in the air. Can be taken out of the filter cleaning device 15 as well as moving inside the filter cleaning device 15.

  FIG. 5 is a partial perspective view showing a closed state of the front filter guide 25. FIG. 5 shows a state where the dust box 26 is removed. FIG. 6 is a partial perspective view showing an open state of the front filter guide 25. 7 and 8 are perspective views of the front filter guide 25. FIG.

  As shown in FIGS. 5 and 6, the front filter guide 25 (filter guide) is attached to the front surfaces of the air filter transport guide 22 and the air filter transport cover 24 (device main body of the filter cleaning device 15) so as to be freely opened and closed.

  An opening 28 for taking out the air filter 14 is formed on the front surface of the air filter conveyance guide 22 (the apparatus main body of the filter cleaning device 15). The front filter guide 25 covers the opening 28 and guides the movement of the air filter 14 in the closed state.

  A rotation shaft of the front filter guide 25 for opening and closing the front filter guide 25 is formed at a position below the opening 28 of the air filter conveyance guide 22 (the apparatus main body of the filter cleaning device 15). On the other hand, at the position above the opening 28 of the air filter transport cover 24 (the apparatus body of the filter cleaning device 15), the end of the front filter guide 25 far from the rotation center is fixed in the closed state of the front filter guide 25. The fixing | fixed part 29 for doing is provided. Therefore, when the front filter guide 25 is in the closed state, not only the end near the rotation center of the front filter guide 25 (the lower end in the closed state) but also the end far from the rotation center of the front filter guide 25 (closed). The upper end portion in the state is also fixed to the main body of the filter cleaning device 15. For this reason, according to this Embodiment, the front filter guide 25 can be fixed reliably.

  As shown in FIG. 6, the front filter guide 25 hangs down due to its own weight in the open state (the position is determined by gravity and when there are other parts below). Therefore, according to the present embodiment, in order to keep the front filter guide 25 in the open state, the user does not need to support the front filter guide 25 by hand, and the front filter guide 25 is fixed by some fixing mechanism. There is no need to be.

  The front filter guide 25 is a movable member located between the front panel 20 attached to the indoor unit body 11 and the air filter 14. The front filter guide 25 is provided with a guide portion that is in contact with the air filter 14 when moving, and serves as a conveyance path for the air filter 14. The front filter guide 25 can be moved (ie, opened) to a position where the air filter 14 is exposed so that the user can easily remove the air filter 14.

  Conventionally, when manually cleaning the air filter or checking for dirt, the front filter guide is flipped up toward the top surface to expose the air filter. Therefore, in order to fix the front filter guide at a predetermined position, stopper members are required on both sides. However, if the user forgets to stop the stopper member, the front filter guide will not be fixed, so the guide part of the front filter guide will move back and forth and the air filter will move back and forth, and the air filter will move from the transport gear. There was a transport defect such as coming off. Further, the structure of the stopper member for fixing the front filter guide is complicated, the number of parts is increased, and the production cost is increased.

  Conventionally, even when the user securely stops the stopper member, there is a fitting part in the movable part called the stopper member, so the front filter guide fits back and forth while the air filter is being transported. It just moved a little. Moreover, since the stopper member is on both sides of the front filter guide, both sides are fixed, but the stopper member moves in the front-rear direction near the center in the width direction of the front filter guide because it is far from the fixed portion. As a result, the meshing between the air filter and the gear became sweet, and there was a concern that the air filter would come off the transport gear.

  Therefore, in the present embodiment, as shown in FIGS. 5 to 8, the front filter guide 25 located between the front panel 20 and the air filter 14 provided on the front surface of the indoor unit body 11 has one end. A rotating shaft is formed at the portion (base portion), and the locking portions 30 and 31 are provided at the other end portion (tip portion).

  The locking part 30 has a convex shape with a through hole 32 and is locked to a convex part 33 provided on the air filter transport cover 24. The locking portion 30 is provided in the vicinity of the center of the front end portion of the front filter guide 25 in the width direction. Therefore, the front filter guide 25 is fixed not only on both sides but also in the center in the width direction. Therefore, the air filter 14 being transported does not move back and forth at any position in the width direction and does not come off the transport gear 27. Note that a plurality of the locking portions 30 may be provided in the width direction of the front end portion of the front filter guide 25.

  Thus, in the present embodiment, the fixing portion 29 has the convex portion 33. The front filter guide 25 is formed with a through hole 32 in the center of the end portion (tip portion) far from the center of rotation, into which the convex portion 33 of the fixing portion 29 is fitted in the closed state. Therefore, when the front filter guide 25 is closed, not only the root portion of the front filter guide 25 but also the front end portion of the front filter guide 25 is fixed to the main body of the filter cleaning device 15. For this reason, according to this Embodiment, the front filter guide 25 can be fixed reliably.

  The locking portion 31 is one or a plurality of protrusions, and is locked to a U-shaped groove (not shown) that is provided in the air filter transport cover 24 and opens downward. A plurality of locking portions 31 are provided in the width direction of the front end portion of the front filter guide 25. Therefore, the front filter guide 25 is fixed not only on both sides but also in the width direction. Therefore, the air filter 14 being transported does not move back and forth at any position in the width direction and does not come off the transport gear 27. The locking portion 31 may be provided in the vicinity of the center of the front end portion of the front filter guide 25 in the width direction instead of the locking portion 30.

  Thus, in this Embodiment, the fixing | fixed part 29 has a groove | channel (recessed part). The front filter guide 25 is provided with a locking portion 31 (protrusion) that is fitted in the groove of the fixed portion 29 in the closed state on the end surface (tip surface) far from the rotation center. Therefore, when the front filter guide 25 is closed, not only the root portion of the front filter guide 25 but also the front end portion of the front filter guide 25 is fixed to the main body of the filter cleaning device 15. For this reason, according to this Embodiment, the front filter guide 25 can be fixed reliably.

  Protruding portions 34 are provided on both side surfaces of the base portion of the front filter guide 25. A guide hole 35 is formed in the conveyance guide side plate of the air filter conveyance guide 22. The guide hole 35 is a key-shaped hole having a circular lower portion and a narrower upper width than the lower width. In a state where the locking portions 30, 31 are locked to the fixed portion 29 (that is, the front filter guide 25 is closed), the protruding portion 34 is inserted into the upper portion of the guide hole 35. The thickness of the protrusion 34 is substantially equal to the upper width of the guide hole 35. When the locking portions 30 and 31 are disengaged, the protruding portion 34 moves up and down a predetermined distance in the guide hole 35 from the upper portion toward the lower circular portion. A circular portion below the guide hole 35 serves as a rotary bearing. When the front filter guide 25 is pulled forward with the front end portion of the front filter guide 25, the projecting portion 34 rotates in a circle below the guide hole 35 while being in contact with the inner peripheral surface of the guide hole 35. A curved surface portion is formed around the protruding portion 34 so as to be easily rotated. Therefore, the front filter guide 25 smoothly rotates while drawing an arc downward with the protrusions 34 provided at both ends of the root portion as the rotation axis, whereby the tip portion moves and the air filter passes through the opening 28. 14 is exposed. Therefore, the air filter 14 can be easily taken out.

  As described above, in the present embodiment, at the position below the opening 28 of the air filter transport guide 22 (the apparatus main body of the filter cleaning device 15), the lower part is circular and the upper part is narrower than the lower part. A pair of guide holes 35 are formed. The front filter guide 25 is provided with protrusions 34 that are fitted in the guide holes 35 on both side surfaces of the end portion (root portion) on the side close to the rotation center. When the front filter guide 25 changes from the closed state to the open state, the protrusion 34 slides on the upper part of the guide hole 35 and then rotates on the lower part of the guide hole 35. That is, when the front end (distal end) on the side far from the rotation center is removed from the fixed portion 29 in the closed state, the front filter guide 25 moves downward and then rotates to change to the open state. Therefore, in the closed state of the front filter guide 25, the front filter guide 25 does not move in the front-rear direction, which is a different direction from the lower side. For this reason, according to this Embodiment, meshing with the air filter 14 and the conveyance gear 27 becomes sweet, and it can prevent that the air filter 14 remove | deviates from a conveyance gear.

  As shown in FIG. 5, the front filter guide 25 and the dust box 26 are not integrated, but are formed separately. As shown in FIG. 6, the front filter guide 25 after the rotational movement is disposed in a space created after removing the dust box 26, that is, a space where the dust box 26 was originally installed. By providing the front filter guide 25 separately above the dust box 26, both can be efficiently stored. Further, when the front filter guide 25 rotates, the rotation locus can be secured without interfering with other members.

  As described above, in the present embodiment, the dust box 26 for storing the dust trapped by the air filter 14 is separated from the front filter guide 25 and on the front surface of the air filter transport guide 22 (the apparatus main body of the filter cleaning device 15). Removably attached. Therefore, the user only needs to remove the dust box 26 when discarding the dust accumulated in the dust box 26, and does not need to remove the front filter guide 25. It is desirable that the front filter guide 25 not be easily removed.

  A filter flip-up protrusion 36 is provided on at least the side end of the surface of the front filter guide 25 on the air filter 14 side (when in the closed state). When the front filter guide 25 is in the closed state, the filter flip-up protrusion 36 is under the lower frame of the air filter 14. When the locking portions 30 and 31 of the front filter guide 25 are removed and the front filter guide 25 is rotated and shifted to the open state, the filter jumping projection 36 abuts against the lower frame of the air filter 14 and the air filter It moves while being caught by the lower frame of 14. As a result, the lower frame of the air filter 14 is flipped forward and exposed without being hidden behind the front filter guide 25. Therefore, the user can easily pull out the air filter 14 forward by grasping a part of the lower frame of the air filter 14.

  As described above, in the present embodiment, the front filter guide 25 is provided with the filter raising protrusion 36 that is the protrusion that raises the air filter 14 in the open state on the surface that covers the opening 28 in the closed state. Yes.

  The user takes out the air filter 14 and manually cleans it or checks the dirt, and then stores the air filter 14 in the air filter conveyance guide 22 again. At that time, the user rotates the front end portion of the front filter guide 25 so as to draw an arc upward with the protrusions 34 provided on both sides of the base portion of the front filter guide 25 as rotation axes. Subsequently, the user moves the protruding portion 34 from the lower circular portion of the guide hole 35 toward the upper portion. As a result, the entire front filter guide 25 slides upward, and when the locking portions 30 and 31 of the front filter guide 25 are locked to the fixing portion 29, the front filter guide 25 is held in a closed state.

  As described above, in the present embodiment, the front filter guide 25 is fixed by the protruding portions 34 on both side surfaces of the root portion and the locking portions 30 and 31 on the tip portion. That is, the front filter guide 25 is fixed not only on both sides but also at the tip (at three or more points). Therefore, when the air filter 14 hits the guide portion of the front filter guide 25 and is conveyed by receiving a force, the front filter guide 25 moves back and forth, but there is no rattling. Therefore, it is possible to secure the allowance between the air filter 14 and the transport gear 27 and transport the air filter 14 reliably.

  Moreover, in this Embodiment, since the stopper member becomes unnecessary for the front filter guide 25, it becomes possible to suppress the production cost accompanying the reduction in the number of parts. Further, it is possible to prevent a conveyance failure in which the front filter guide 25 moves back and forth due to an operation mistake of the user forgetting to stop the stopper member, and the cost of the air filter 14 and the conveyance gear 27 is eliminated.

  Furthermore, as in the past, when the front filter guide is flipped up to expose the air filter, the air filter must be removed with the other hand while holding the front filter guide with one hand. In the embodiment, by exposing the air filter 14 by hanging the front filter guide 25, the air filter 14 can be easily taken out with both hands without requiring a special fixing mechanism.

  9, 10, and 11 are perspective views of the dust box 26. 12, 13, 14, and 15 are cross-sectional views of the dust box 26. FIG. 16 is a perspective view showing only the lower part of the dust box 26 by cutting the dust box 26 for explanation. FIG. 17 is a perspective view of the air purification filter 21.

  As shown in FIGS. 9 to 16, the dust box 26 has a wall plate 37 combined in a box shape, and both wall plates 37 (both side portions of the dust box 26) can swing at both ends (between a predetermined rotation angle). ) And a stopper member 39 attached to the front wall plate 37 (front portion of the dust box 26).

  The wall plate 37 forms a dust collection chamber 40 that is a space for storing dust. A dust removal brush (not shown) is attached to the dust removal shaft 38. The upper wall plate 37 (the top surface portion of the dust box 26) has a center opening in the width direction when viewed from above, and a brush hole 41 through which the tip of the dust removing brush passes is formed substantially at the center when viewed from the side. When the dust removal shaft 38 swings in a state where the dust box 26 is attached to the air filter transport guide 22 (device main body of the filter cleaning device 15), the dust removal brush also swings. Therefore, the dust adhering to the air filter 14 is scraped off by the swing of the dust removing brush while the air filter 14 is in contact with the dust removing brush. The dust that is scraped off falls into the dust collection chamber 40 and is stored. At this time, since the air filter 14 moves, a wide range of the air filter 14 can be removed.

  The rear wall plate 37 (the back portion of the dust box 26) is inclined at the lower portion to form a slope portion 42. A lid 43 of the dust collecting chamber 40 is formed by the inclined surface portion 42 and the lower wall plate 37 (the bottom surface portion of the dust box 26).

  In a state where the dust box 26 is attached to the air filter transport guide 22 (the apparatus main body of the filter cleaning device 15), the dust box 26 is fixed so as not to be pulled out by the spring force of the stopper member 39. The user can remove the dust box 26 by sliding the stopper member 39. Then, the dust accumulated in the dust collection chamber 40 can be discarded by opening the lid 43.

  As described above, conventionally, the front filter guide slightly moves back and forth while the air filter is being transported, so that the meshing of the air filter and the gear is loosened, and there is a concern that the air filter may come off the transport gear. It was.

  Therefore, in the present embodiment, the front filter guide 25 and the dust box 26 are separated from each other so that the front filter guide 25 is securely fixed and the air filter 14 is reliably conveyed. Fixing portions 44 and 45 for contacting and fixing the front filter guide 25 by pressing are provided in the dust box 26.

  When attaching the dust box 26, the front filter guide 25 is fixed to the air filter transport guide 22 and the air filter transport cover 24 (device main body of the filter cleaning device 15) with the locking portions 30 and 31, and the dust box 26 is later installed. Installing. In order to improve space efficiency, the front filter guide 25 can be rotated only after the dust box 26 is removed because the rotation path of the front filter guide 25 uses the space in which the dust box 26 is mounted. Further, the dust box 26 can be mounted only after the front filter guide 25 is moved back to the original mounting position. Therefore, the front filter guide 25 is closed and the dust box 26 is attached later, so that the fixing by the fixing portions 44 and 45 can be performed.

  The front filter guide 25 is pressed from the front to the rear by a fixing portion 44 provided in the dust box 26. The fixing portion 44 is on the side facing the front filter guide 25 on the back side of the dust box 26. A protrusion 46 is provided on the upper portion of the dust box 26. Although the back surface of the protruding portion 46 may function as the fixed portion 44, in this embodiment, the rib 47 provided on the back surface of the protruding portion 46 is the fixed portion 44, and contacts the front filter guide 25 and the front surface. The filter guide 25 is pressed and fixed. As a result, the front filter guide 25 is not fixed only by the protruding portions 34 on both sides of the front filter guide 25, but by attaching the dust box 26, the fixing portion 44 is brought into contact with the front filter guide 25 from the front and the rear. The front filter guide 25 can be fixed by applying force.

  The front filter guide 25 is fixed over the width direction by fixing the front filter guide 25 with a rib 47 provided on the protrusion 46 protruding from the upper portion of the dust box 26. Therefore, only the both sides of the front filter guide 25 are fixed, and the fixing of the center portion is loosened, and only the center does not move slightly back and forth. Therefore, the meshing between the air filter 14 and the transport gear 27 is loosened, and the problem that the air filter 14 is detached from the transport gear 27 is eliminated. Even if the front filter guide 25 is fixed by the protrusion 46 itself protruding from the upper part of the dust box 26, the front filter guide 25 can be fixed in the same manner in the width direction. In either case, the front filter guide 25 can be securely fixed not only at the protruding portions 34 on both sides but also at three or more points.

  When the surface of the protruding portion 46 protruding from the upper portion of the dust box 26 is used as the fixing portion 44, there is an advantage that the force is applied to the entire surface in the width direction and is widely suppressed in the width direction. In some cases, such a portion may vary on the surface. In the case where the rib 47 provided on the surface of the protruding portion 46 is used as the fixed portion 44, the rib 47 reliably contacts the front filter guide 25 without any variation in the portion where the force is applied even if there is a variation in assembly or the part is warped. Thus, the front filter guide 25 can be pressed and fixed. When the plurality of ribs 47 serving as the fixing portions 44 are provided in the width direction of the dust box 26, the front filter guide 25 is more widely pressed in the width direction, so that the air filter 14 is less likely to float at the center portion. The rib 47 protruding from the surface may be linear or spherical. FIG. 11 shows an example in which a plurality of ribs 47 extending linearly in the vertical direction are provided in the width direction.

  Both sides of the dust box 26 are fixed to the air filter transport guide 22 (the device main body of the filter cleaning device 15). In this state, a facing portion 48 that is a portion excluding the protruding portion 46 of the top surface portion of the dust box 26 enters below the front filter guide 25 and faces the front filter guide 25. The angle between the facing portion 48 and the protruding portion 46 is about 90 degrees. That is, the facing portion 48 and the protruding portion 46 are formed in an L shape in a side view, and the former contacts (or approaches) the front filter guide 25 from below, and the latter contacts the front filter guide 25 from the front. .

  With such a configuration, the front filter guide 25 and the dust box 26 can be arranged with small required dimensions. When the facing portion 48 of the dust box 26 enters below the front filter guide 25, the vertical dimension can be reduced. The opposing portion 48 and the protruding portion 46 of the dust box 26 form an angle of approximately 90 degrees, and the protruding portion 46 presses the front filter guide 25 from the front to the rear, thereby reducing the size in the front-rear direction.

  Since the front filter guide 25 can be pressed and fixed by the fixing portion 44 so that the front filter guide 25 does not move back and forth, the air filter 14 is not detached from the transport gear 27 and is molded integrally with the dust box 26. Thus, it is possible to obtain the filter cleaning device 15 that reliably conveys the air filter 14 at a low cost without increasing the number of parts, by eliminating the need for a new pressing member other than the protruding portion 46.

  The front filter guide 25 is pressed upward from below by a fixing portion 45 provided in the dust box 26. The fixing portion 45 is on the side facing the front filter guide 25 on the upper surface side of the dust box 26. Although the surface of the facing portion 48 of the dust box 26 may function as the fixing portion 45, in the present embodiment, the rib 49 provided on the surface of the facing portion 48 is the fixing portion 45 and contacts the front filter guide 25. Then, the front filter guide 25 is pressed and fixed. As a result, the front filter guide 25 is not fixed only by the protrusions 34 on both sides of the front filter guide 25, but by attaching the dust box 26, the fixing portion 45 is brought into contact with the front filter guide 25 from below to move upward. The front filter guide 25 can be fixed by applying force.

  The front filter guide 25 is fixed over the width direction by fixing the front filter guide 25 with the rib 49 provided in the opposing part 48 of the top | upper surface part of the dust box 26. FIG. Therefore, only the both sides of the front filter guide 25 are fixed, and the fixing of the center portion is loosened, and only the center does not move slightly back and forth. Therefore, the meshing between the air filter 14 and the transport gear 27 is loosened, and the problem that the air filter 14 is detached from the transport gear 27 is eliminated. Even if the front filter guide 25 is fixed by the facing portion 48 of the top surface portion of the dust box 26, the front filter guide 25 can be fixed in the width direction in the same manner. In either case, the front filter guide 25 can be securely fixed not only at the protruding portions 34 on both sides but also at three or more points.

  In the case where the surface of the facing portion 48 of the top surface portion of the dust box 26 is the fixed portion 45, there is an advantage that the force is applied to the entire surface in the width direction and is widely suppressed in the width direction. Such a portion may vary in the surface. In the case where the rib 49 provided on the surface of the facing portion 48 is used as the fixing portion 45, even if there is a variation in assembly or the part is warped, the portion to which the force is applied does not vary and the rib 49 reliably contacts the front filter guide 25. Thus, the front filter guide 25 can be pressed and fixed. If a plurality of ribs 49 serving as the fixing portions 45 are provided in the width direction of the dust box 26, the front filter guide 25 is more widely pressed in the width direction, so that the air filter 14 is less likely to float at the center portion. The rib 49 protruding from the surface may be linear or spherical. FIG. 11 shows an example in which a plurality of ribs 49 extending linearly in the front-rear direction are provided in the width direction.

  Since the front filter guide 25 can be pressed and fixed by the fixing portion 45 so that the front filter guide 25 does not move back and forth, the air filter 14 is not detached from the transport gear 27 and a new pressing member is not required. As a result, it is possible to obtain the filter cleaning device 15 that reliably conveys the air filter 14 at low cost without increasing the number of parts.

  In addition, if either one of the fixing portions 44 and 45 is provided, the above-described effect can be obtained. However, in order to obtain a greater effect, both the fixing portions 44 and 45 are provided. desirable.

  Although not shown, as another means for pushing the front filter guide 25 from the front, a pushing rib protruding from the back surface of the front panel 20 attached to the indoor unit body 11 to the portion facing the front filter guide 25 is formed. And you may press the front filter guide 25 from the front to the back with this pushing rib. Also in this case, it is possible to obtain the filter cleaning device 15 that reliably conveys the air filter 14 at a low cost without increasing the number of parts without requiring a new pressing member.

  A lifting rib 50 for lifting the dust box 26 protrudes from the bottom surface of the dust box 26. The presence of the lifting rib 50 can prevent the dust box 26 from being tilted back and forth due to dimensional variations. That is, when the dust box 26 is tilted forward, it is difficult to apply a force to the rear by the fixing portion 44. Therefore, by providing the lifting rib 50, such a situation can be prevented. In addition, the dust box 26 can be easily mounted when the dust box 26 is attached by not contacting the entire lower surface of the dust box 26 with the frame of the air filter transport guide 22 (the apparatus body of the filter cleaning device 15) but only the lifting rib 50. become able to.

  The lifting rib 49 is preferably spherical. By making the lifting rib 49 spherical, it is possible to make it difficult for the lifting rib 49 to be caught on the frame of the air filter transport guide 22 (device main body of the filter cleaning device 15) when the dust box 26 is attached. Therefore, the mounting becomes smooth. Further, it is desirable that at least two lifting ribs 50 are provided on both sides of the dust box 26 in the width direction. By doing so, the dust box 26 does not tilt up and down, and the dust box 26 does not tilt forward and backward in the entire width direction. Therefore, the front filter guide 25 can be reliably pressed and fixed from the front to the rear by the fixing portion 44.

  As described above, in the present embodiment, the dust box 26 presses the front filter guide 25 so that the front filter guide 25 is used as the front filter in the air filter transport guide 22 and the air filter transport cover 24 (device main body of the filter cleaning device 15). The guide 25 is fixed to the mounting position. For this reason, according to this Embodiment, the front filter guide 25 can be fixed reliably.

  The dust box 26 presses the front filter guide 25 at least rearward to fix the front filter guide 25 in the mounting position. Specifically, the dust box 26 is provided with a facing portion 48 facing the front filter guide 25 and a protruding portion 46 protruding in a plate shape from a position before the facing portion 48 on the upper surface. The dust box 26 presses the front filter guide 25 rearward by one surface (rear surface) of both surfaces of the protruding portion 46 in the thickness direction.

  It is desirable that ribs 47 that come into contact with the front filter guide 25 are provided on the surface (rear surface) that presses the front filter guide 25 backward, out of both surfaces in the thickness direction of the protrusion 46. It is desirable that a plurality of ribs 47 be provided along the left-right direction (width direction) of the dust box 26.

  Also, the dust box 26 presses the front filter guide 25 at least upward to fix the front filter guide 25 at the mounting position. Specifically, the dust box 26 presses the front filter guide 25 upward by the surface of the facing portion 48. It is desirable that a rib 49 that contacts the front filter guide 25 is provided on the surface of the facing portion 48. A plurality of ribs 49 are desirably provided along the left-right direction (width direction) of the dust box 26.

  Further, the dust box 26 is provided with a lifting rib 50 that presses the air filter conveyance guide 22 (the apparatus main body of the filter cleaning device 15) on the lower surface. The lifting rib 50 is preferably spherical (for example, hemispherical). In addition, it is desirable that a plurality of lifting ribs 50 are arranged along the left-right direction (width direction) of the dust box 26.

  The conventional dust box has a box shape with a substantially square cross section, and is installed between the front panel and the front-rear direction of the heat exchanger. The front portion of the dust box is substantially flat, and is exposed to the user when the front panel is opened, and the dust box is attached and detached by the user. The lower surface portion of the dust box is substantially flat and is installed on the frame of the air filter conveyance guide. The rear portion of the dust box is substantially flat, and a part of the lower portion of the rear portion is installed on the frame of the air filter conveyance guide so as to be easily fixed and to serve as a guide for attaching the dust box. The top surface portion of the dust box is a substantially flat surface opened with a dust removing brush or a curved surface having a large curvature with a slightly recessed central opening, and is installed facing the path along which the air filter moves.

  In the present embodiment, the dust box 26 has a box shape with a substantially trapezoidal cross section. The upper side and the lower side of the trapezoid are parallel, and the upper side is longer than the lower side. The dust box 26 is installed between the front panel 20 and the heat exchangers 13a and 13b in the front-rear direction. The front portion of the dust box 26 is substantially flat and is exposed to the user when the front panel 20 is opened. The lower surface of the dust box 26 is substantially flat and is installed on the frame of the air filter conveyance guide 22. The back surface portion of the dust box 26 is inclined obliquely from the lower side to the upper side toward the rear side. The back part of the dust box 26 is opposed to the heat exchangers 13a and 13b provided at the rear, and is exposed.

  Other parts such as a part of the air purifying filter 21 can be placed in the space created at the rear of the lower side by tilting the rear portion of the dust box 26 from the lower side to the upper side. Therefore, the depth (front-rear direction) dimension of the air conditioner can be reduced.

  Between the heat exchangers 13a and 13b and the dust box 26, in order to prevent the dust box 26 from being dewed and to prevent the heat exchangers 13a, 13b and the dust box 26 from coming into contact with each other due to assembly variations. , It is necessary to leave a predetermined distance. Since the back surface portion of the dust box 26 is inclined obliquely from the lower side to the upper side toward the rear side, a space is created at the lower rear side and a predetermined distance is secured. Therefore, the dust box 26 and the lower heat exchanger 13b on the front surface can be arranged close to each other, and the depth (front-rear direction) dimension of the air conditioner can be reduced.

  In the present embodiment, the air filter transport guide 22 (device main body of the filter cleaning device 15) detachably holds an air cleaning filter 21 that cleans the air that has passed through the air filter 14. As described above, an air cleaning device may be used instead of the air cleaning filter 21. The air purification filter 21 and the air purification device are both examples of units that purify air.

  The air purification filter 21 is installed in front of the heat exchangers 13a and 13b, further behind the dust box 26 behind the front panel 20. The user can take out the air purification filter 21 and perform maintenance.

  As shown in FIG. 17, the air purification filter 21 has a frame 51. The frame 51 is fixed to the conveyance guide side plate of the air filter conveyance guide 22. The frame 51 is provided with an extending portion 52 extending forward. The extending part 52 is fitted in a recess formed in the air filter transport guide 22.

  The extending portion 52 of the frame 51 of the air purification filter 21 functions as a handle for grasping and pulling out by hand when performing maintenance of the air purification filter 21. The extending part 52 of the frame 51 is on the front surface of the air purification filter 21. With such an arrangement, the user can easily grasp the extending portion 52. In addition, the extension part 52 does not need to be a handle, For example, the cover part of the frame 51 of the air purifying filter 21 may be sufficient.

  The air purifying filter 21 is installed below the air filter storage guide 23 and horizontally between the dust box 26 and the heat exchangers 13a and 13b, with a size larger in the width direction than in the front-rear direction. The front side is inclined and arranged so as to be lower than the rear side. In this way, it is easy to pass the wind coming from above, and the dead space between the dust box 26 and the heat exchangers 13a and 13b below the air filter storage guide 23 is effectively used to make the air conditioner. The depth dimension and height dimension of the indoor unit 10 can be reduced.

  The extending portion 52 includes an inclined portion 53 that is inclined obliquely downward from the rear to the front. In front of the inclined portion 53, there is a flat portion 54. The flat surface portion 54 is disposed in a recess formed in the air filter conveyance guide 22. The inclined portion 53 and the flat portion 54 are part of the extending portion 52. The inclined portion 53 inclined obliquely downward from the rear to the front is disposed below the inclined portion 42 of the dust box 26 inclined obliquely from the lower to the upper portion and overlaps with the vertical height of the dust box 26. The The lower side of the slope portion 42 of the dust box 26 is a space having a triangular shape in a side view created by the slope portion 42 being inclined.

  That is, as compared with a case where the dust boxes 26 are arranged in front of the extending portion 52 so as not to overlap in the front-rear direction, in the present embodiment, the depth dimension of the indoor unit 10 of the air conditioner is effectively utilized. Can be reduced.

  Moreover, compared with the case where the square dust box which does not have the extension part 52 and the slope part 42 is piled up and down in this embodiment, in this Embodiment, space is used effectively and the height of the indoor unit 10 of an air conditioner Can be lowered.

  The slope portion 42 of the dust box 26 and the slope portion 53 of the extension portion 52 are each inclined at substantially the same angle, and the slope portion 53 of the extension portion 52 is provided below the slope portion 42 of the dust box 26 so that the respective slopes are matched. It is desirable to arrange to come. The substantially equal angle is an angle whose difference is within 30 degrees.

  Here, when the user intends to install the air purifying filter 21 after maintenance, the extending portion 52 does not fit properly in the recess formed in the air filter transport guide 22 or the air purifying filter 21 faces the user's recess. There is a possibility that the force for pushing the button is insufficient, or the user does not know how to fit or push in, and only puts the air purifying filter 21, and the extension 52 is not fixed and floats upward.

  Since the air purification filter 21 is located behind the dust box 26, the user removes the air purification filter 21 after removing the dust box 26. In addition, the dust box 26 is attached after the air purification filter 21 is attached. However, if the extension 52 is not fixed and floats upward, the dust box having a square cross section as in the conventional case cannot be mounted later. In addition, when an air cleaning device is used instead of the air cleaning filter 21, quality deterioration such as poor connection due to lack of electrical contact or generation of abnormal noise due to air discharge is caused.

  Therefore, in the present embodiment, even if the extending part 52 of the air purifying filter 21 floats upward, the back surface part (particularly, the slope part 42) of the dust box 26 becomes the extending part 52 of the air purifying filter 21. It makes contact. In this way, even if the extension part 52 floats upward from the normal position, the user simply attaches the dust box 26, and the back part of the dust box 26 extends regardless of the user's intention. The abutting portion 52 is forcibly pushed backward and downward while abutting against the protruding portion 52. Therefore, the extending portion 52 automatically fits into the recess formed in the air filter conveyance guide 22.

  Since the slope part 42 which inclines diagonally toward back from the lower part is formed in the back part of the dust box 26, when attaching the dust box 26, the slope part 42 is used using the slope part 42 of a back part. From the upper side to the lower side, the extension portion 52 can be reliably guided to the lower side without requiring a large force while sliding the extension portion 52 downward or sliding the extension portion 52 downward.

  Assuming that a conventional dust box having a square cross section with the back surface not inclined obliquely from the lower side to the upper side is used, the dust box is caught when the back surface portion of the dust box comes into contact with the extension portion 52, and is extended. Since the protruding portion 52 does not move, the extending portion 52 cannot be easily guided downward.

  When the ratio of the length of the slope portion 42 to the entire length of the back portion of the back portion of the dust box 26 is more than half, the area hitting the extension portion 52 increases, and while sliding the extension portion 52 downward, Alternatively, the extension portion 52 can be reliably guided downward while sliding downward.

  The dust box 26 has a back surface portion including two or more surfaces of a slope portion 42 and a portion extending in the vertical direction other than the slope portion 42 (not obliquely inclined), so that a dust removal brush is installed in the dust collection chamber 40. It becomes easy. That is, the volume of the dust collection chamber 40 can be increased when the back surface portion of the dust box 26 is formed with two or more surfaces as compared with the case where the back surface portion of the dust box 26 is formed with only one surface of the slope portion 42.

  If the height of the slope portion 42 on the back surface portion of the dust box 26 is higher than the height of the portion other than the slope portion 42 on the back surface portion, the area corresponding to the extending portion 52 becomes large. Therefore, the extension portion 52 can be reliably guided downward while sliding the extension portion 52 downward or sliding the extension portion 52 downward.

  A rear surface recess 55 in which the extended portion 52 of the air purifying filter 21 is accommodated is provided on the inclined surface portion 42 of the rear surface portion of the dust box 26. The back recess 55 is a recess in which the slope 42 on the back surface of the dust box 26 is cut out in an L shape in cross-sectional view. Since the extension part 52 and the dust box 26 overlap and wrap in the height direction (vertical direction), the height of the indoor unit 10 of the air conditioner can be reduced by effectively using space.

  The extended portion 52 of the air purifying filter 21 is sandwiched and fixed by the back surface recess 55 in the back surface portion of the dust box 26 and the recess formed in the air filter transport guide 22. Therefore, the extension part 52 does not move in the vertical direction, and the air purification filter 21 can be fixed securely.

  As described above, in the present embodiment, the dust box 26 presses the air cleaning filter 21 to bring the air cleaning filter 21 into the holding position of the air cleaning filter 21 in the air filter transport guide 22 (device main body of the filter cleaning device 15). Fix it. For this reason, according to this Embodiment, the air purifying filter 21 can be easily attached to the correct position of the filter cleaning apparatus 15. FIG.

  At least a part of the back surface of the dust box 26 is inclined obliquely downward, and the air purifying filter 21 is pressed by the inclined portion 42 that is the inclined portion. For example, the dust box 26 presses the extending portion 52, which is a handle provided at the lower portion of the front surface of the air purification filter 21, backward and downward by the inclined surface portion 42. It is desirable that the inclined surface portion 42 is formed with a back surface recess 55 that is a recess for storing the tip portion of the extending portion 52.

  As the surface area of the slope portion 42 increases, the dust box 26 can surely press the air purification filter 21 to the correct position by the slope portion 42. Therefore, in the dust box 26, it is desirable that the dimension in the front-rear direction of the slope portion 42 on the back surface is larger than the dimension in the front-rear direction of other portions on the back surface. Further, in the dust box 26, it is desirable that the vertical dimension of the slope 42 on the back surface is larger than the vertical dimension of other portions on the back surface.

  Although the entire back surface of the dust box 26 may be the slope portion 42, the volume of the dust collection chamber 40 is reduced in that case. Therefore, it is desirable that the dust box 26 has a portion extending perpendicularly to a part of the back surface. In other words, it is desirable that the dust box 26 extends vertically except for the slope 42 on the back surface.

  In the present embodiment, as described above, since the inclined portion 42 is provided on the back surface of the dust box 26, the air cleaning filter 21 is held in the air filter transport guide 22 (the apparatus main body of the filter cleaning device 15). When the dust box 26 is attached to the front surface of the air filter conveyance guide 22 (the apparatus main body of the filter cleaning device 15) in the state before the air, the air cleaning filter 21 is pushed into the correct holding position by the dust box 26 and fixed.

  Conventionally, when a fixing stopper member is provided on the front surface of the dust box, the depth dimension of the indoor unit has been increased because a space in the depth direction of the dust box is taken. Moreover, since the stopper member is small, it is difficult to grasp and difficult to take out.

  Further, the conventional dust box takes too much space in the height direction, and the height dimension of the indoor unit is large. Moreover, the blower outlet of the indoor unit main body could not be enlarged.

  Furthermore, conventionally, when an air conditioner is provided with an air purifying filter, if the handle is placed in front as much as possible so that the user can easily take it out, the dust box and the air purifying filter handle will interfere with each other. Had to increase the height of the indoor unit.

  Therefore, in the present embodiment, recesses 56 and 57 that are recessed in the direction of decreasing the volume of the dust collection chamber 40 are formed in the wall plate 37 that forms the dust collection chamber 40 (a space for storing dust) of the dust box 26. . For this reason, according to this Embodiment, the indoor unit 10 of an air conditioner can be reduced in size, ensuring the space which provides the stopper member 39 etc. in the dust box 26 (inside the recessed parts 56 and 57). The recesses 56 and 57 can also be used as a part where a finger is inserted or grasped by a finger.

  For example, a stopper member 39 for fixing the dust box 26 to the air filter conveyance guide 22 (device main body of the filter cleaning device 15) is accommodated inside the recess 56. Inside the same recess 56, a finger hooking portion 58, which is a protrusion for hooking a finger, is formed.

  The recessed portion 56 is formed on the front surface of the dust box 26 and plays a role of eliminating the protrusion from the front surface of the dust box 26. That is, by providing the stopper member 39 and the finger hooking portion 58 inside the recess 56, the stopper member 39 and the finger hooking portion 58 can be prevented from protruding from the front surface of the dust box 26.

  Further, for example, the recess 57 is formed at the corner of the upper surface of the dust box 26, and at least a part of the periphery is plate-like, and the plate-like part is a handle 59 for grasping with fingers.

  The back recess 55 described above is also a recess formed in the wall plate 37 of the dust box 26 so as to be recessed in the direction in which the volume of the dust collection chamber 40 is reduced.

  The stopper member 39 housed in the recess 56 includes a spring part, a spring housing part, a knob part, and a protrusion part for preventing slipping out. The spring accommodating portion, the knob portion, and the protrusion preventing protrusion are integrally formed or formed by combining two resin parts.

  One end of the dust box 26 in the width direction (one outer surface of the wall plates 37 on both sides) is provided with a protrusion 60 serving as a fixing slip-out preventing means. There is a stopper member 39 at the other end (near the other side of the wall plates 37 on both sides). The end portion on the side where the stopper member 39 is provided has a shape that is recessed in an L-shape rearward and cut out in a front view. Therefore, the volume of the dust collection chamber 40 is reduced. A stopper member 39 is accommodated in the recess 56 formed by hollowing out. The stopper member 39 serves as a slip-out prevention unit, and fixes the dust box 26 to the air filter transport guide 22 (the device main body of the filter cleaning device 15). When the user moves the stopper member 39 in the left-right direction while picking the knob, the fixing by the stopper member 39 is released.

  A stopper member 39 is accommodated in a section of the recess 56 that is long in the left-right direction. This section is partitioned by walls on the top, bottom, left and right. Ribs for fixing the stopper member 39 are provided on the upper wall, the lower wall, or both. The left wall or the right wall has a round hole into which the protrusion for preventing withdrawal is inserted. The dust box 26 is fixed to the air filter conveyance guide 22 (the apparatus main body of the filter cleaning device 15) in a state in which the protrusion for preventing removal from the round hole protrudes. When the stopper member 39 is slid in the left-right direction, the protrusion for preventing slipping out of the round hole is retracted and does not pop out, and the dust box 26 is released from being fixed.

  By adopting such a configuration, even if the dust box 26 includes the stopper member 39, the depth dimension (thickness) of the dust box 26 is not increased by the depth dimension (thickness) of the stopper member 39. Therefore, an air conditioner that is compact in the depth direction is obtained.

  A space for inserting a finger is formed in a section long in the vertical direction of the recess 56. This section is partitioned by walls on the top, bottom, left and right. An index finger can be mainly pressed against the left wall or the right wall (side wall) corresponding to the partition wall with the section in which the stopper member 39 is accommodated. Alternatively, the sidewall can be picked primarily with the thumb and index finger. The side wall extends in the vertical direction within the height range of the dust box 26 on the front side of the dust box 26. The user can easily remove the dust box 26 by pushing or picking the side wall and pulling the dust box 26 forward. Similarly, the user can easily attach the dust box 26 by pushing or picking the side wall and pushing the dust box 26 to the back.

  By adopting such a configuration, even if a space for inserting a finger is formed in the dust box 26, the depth dimension (thickness) of the dust box 26 is increased by the depth dimension (thickness) of the space. Absent. Therefore, an air conditioner that is compact in the depth direction is obtained.

  In the top surface portion of the dust box 26, a portion above the end portion of the dust box 26 on the side in which the stopper member 39 in the width direction is formed is recessed in a square shape in a top view and cut out. Therefore, the volume of the dust collection chamber 40 is reduced. A handle 59 is formed on a part of the periphery of the recess 57 created by hollowing out.

  As for the recessed part 57, front and rear, right and left are partitioned off by the wall. The front wall is a part of the front portion of the dust box 26. This front wall is a handle 59 for grasping by hand. A finger can be hooked on the handle 59. The user can easily remove the dust box 26 by grasping the handle 59 with his hand and pulling it forward.

  By adopting such a configuration, even if the handle 59 is provided in the dust box 26, the height of the dust box 26 is not increased by the height of the handle 59. Therefore, an air conditioner that is compact in the height direction can be obtained.

  As described above, the back recess 55 has a shape in which the slope 42 on the back surface of the dust box 26 is cut out in an L shape in a cross-sectional view. Therefore, the volume of the dust collection chamber 40 is reduced.

  The back recess 55 is partitioned by a front wall, a left wall, a right wall, and an upper wall. The extension 52 of the air purifying filter 21 can be accommodated in the back recess 55.

  By adopting such a configuration, the size of the indoor unit 10 of the air conditioner is not increased by the depth dimension and the height dimension of the extending portion 52 of the air cleaning filter 21. Therefore, a compact air conditioner can be obtained.

  As mentioned above, although embodiment of this invention was described, you may implement this embodiment partially. For example, only one of those described as “parts” in the description of this embodiment may be adopted, or some arbitrary combinations may be adopted. In addition, this invention is not limited to this embodiment, A various change is possible as needed.

  DESCRIPTION OF SYMBOLS 10 Air conditioner indoor unit, 11 Indoor unit main body, 12 Blower fan, 13a Heat exchanger, 13b Heat exchanger, 13c Heat exchanger, 14 Air filter, 15 Filter cleaning device, 16 Suction port, 17 Air outlet, 18 Nozzle, 19 Vertical vane variable vane, 20 Front panel, 21 Air cleaning filter, 22 Air filter transport guide, 23 Air filter storage guide, 24 Air filter transport cover, 25 Front filter guide, 26 Dust box, 27 Transport gear, 28 Opening , 29 fixed portion, 30 locking portion, 31 locking portion, 32 through hole, 33 convex portion, 34 protruding portion, 35 guide hole, 36 filter flip-up projection, 37 wall plate, 38 dust removing shaft, 39 stopper member, 40 Dust collection chamber, 41 brush hole, 42 slope, 43 lid, 4 fixing part, 45 fixing part, 46 projecting part, 47 rib, 48 facing part, 49 rib, 50 lifting rib, 51 frame, 52 extending part, 53 inclined part, 54 flat part, 55 back recess, 56 recessed part, 57 Recess, 58 Finger hook, 59 Handle, 60 Protrusion.

Claims (7)

A device main body that movably houses a filter that captures dust in the air,
A dust box that is detachably attached to the front surface of the apparatus main body and stores dust captured by the filter;
A filter cleaning device for an air conditioner, wherein a recess that is recessed in a direction to reduce the volume of the space is formed on a wall plate that forms a space for storing dust in the dust box.   The filter cleaning device for an air conditioner according to claim 1, wherein a stopper member for fixing the dust box to the device main body is accommodated inside the recess.   3. A filter cleaning device for an air conditioner according to claim 1, wherein a protrusion for hooking a finger is formed inside the recess. The recess is formed on the front surface of the dust box,
The filter cleaning device for an air conditioner according to any one of claims 1 to 3, wherein there is no protrusion on the front surface of the dust box.   2. The air according to claim 1, wherein the concave portion is formed at a corner of the upper surface of the dust box, and at least a part of the periphery is plate-shaped, and the plate-shaped portion is a handle for gripping with fingers. Filter cleaning device for harmony machines. The apparatus main body detachably holds a unit for purifying air that has passed through the filter,
The dust box presses the unit and fixes the unit to a holding position of the unit in the apparatus main body,
2. The air according to claim 1, wherein the recess is a recess for storing a tip of a handle provided at a lower portion of the front surface of the unit, and is formed on a surface of the dust box that presses the unit. Filter cleaning device for harmony machines. A filter cleaning device for an air conditioner according to any one of claims 1 to 6;
An indoor unit body in which the filter cleaning device is installed;
An air conditioner comprising: