JP6094528B2 - Air conditioning indoor unit - Google Patents

Description

  The present invention relates to an air conditioning indoor unit, and more particularly, to an air conditioning indoor unit having a filter cleaning function for automatically removing dust attached to a filter.

  2. Description of the Related Art Recently, many air conditioning indoor units are equipped with a filter cleaning device that removes dust adhering to a filter by applying a brush on the filter and moving both relatively. For example, in the filter cleaning device described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2006-71182), an upper brush that is in contact with the front surface side of the filter and a lower brush that is in contact with the rear surface side of the filter are opposed to each other with the filter interposed therebetween. The cleaning unit of the structure is arrange | positioned at the one filter entrance / exit side of the cleaning case, and the other filter entrance / exit side, respectively. And this filter cleaning apparatus removes the dust adhering to a filter by moving a filter in a predetermined direction, and then moving a filter in the opposite direction slightly.

  However, in the cleaning unit described in Patent Document 1, when the dust that has not been removed by the pair of upper and lower brushes corresponds to the kind of dust that cannot be removed by the brush, the dust moves to the adjacent upper and lower pair of brushes of the same type. Even if it is not completely removed, it remains on the filter.

  Then, the subject of this invention is providing the air-conditioning indoor unit provided with the filter cleaning apparatus which prevents that dust remains on a filter, without removing.

An air conditioner indoor unit according to a first aspect of the present invention is an air conditioner indoor unit having a filter cleaning function for removing dust adhering to a filter by reciprocating a filter along a predetermined movement trajectory. A member, a second cleaning member, and a dust box are provided. A 1st cleaning member contacts on the moving filter and scrapes off dust. The second cleaning member is disposed on the upstream side of the first cleaning member during the backward movement of the reciprocating movement of the filter along the moving path of the filter, and scrapes off dust on the filter. The dust box collects dust scraped from the filter. The first cleaning member is disposed in the dust box, and the second cleaning member is disposed outside the dust box. The second cleaning member contacts the filter in a manner different from the manner in which the first cleaning member contacts the filter, and scrapes off dust that is different from the dust that the first cleaning member scrapes off the filter.

  In this air conditioning indoor unit, dust that has not been removed by the first cleaning member is removed by the second cleaning member, so that the dust removal rate from the filter is improved and various dusts can be removed.

  Further, in this air conditioning indoor unit, at least the filter moves relative to the first cleaning member and the second cleaning member, so that dust can be efficiently removed from the filter.

Furthermore, in this air conditioning indoor unit, the dust removed and captured by the first cleaning member and the second cleaning member can be finally gathered to the first cleaning member side and carried into one dust box. In addition, post-processing after removal of the dust becomes easy, and a single dust box is sufficient, so that an increase in cost can be suppressed.

  An air conditioning indoor unit according to a second aspect of the present invention is the air conditioning indoor unit according to the first aspect, wherein the second cleaning member contacts the filter in an area different from the area where the first cleaning member and the filter contact. To do.

  In this air conditioning indoor unit, for example, rough dust is removed by the upstream cleaning member and fine dust is removed by the downstream cleaning member by making the contact areas of the first cleaning member and the second cleaning member different from each other. Therefore, it is possible to remove various kinds of dust.

  An air conditioning indoor unit according to a third aspect of the present invention is the air conditioning indoor unit according to the first aspect, wherein the second cleaning member contacts the filter at a density different from a density at which the first cleaning member and the filter contact each other. To do.

  In this air conditioning indoor unit, for example, rough dust is removed by the upstream cleaning member and fine dust is removed by the downstream cleaning member by making the contact densities of the first cleaning member and the second cleaning member different from each other. Therefore, it is possible to remove various kinds of dust.

  An air conditioning indoor unit according to a fourth aspect of the present invention is the air conditioning indoor unit according to the first aspect, wherein the second cleaning member contacts the filter at an angle different from the angle at which the first cleaning member and the filter contact. To do.

  In this air conditioning indoor unit, by changing the contact angles of the first cleaning member and the second cleaning member to the filters, for example, rough dust is removed by the upstream cleaning member, and fine dust is removed by the downstream side. Therefore, it is possible to remove various kinds of dust.

  The air conditioning indoor unit according to the fifth aspect of the present invention is the air conditioning indoor unit according to the first aspect, wherein the second cleaning member is made of a material different from the material of the portion of the first cleaning member that contacts the filter. Contact the filter at the contact portion.

  In this air conditioner indoor unit, the material of the contact portion with respect to the filter of each of the first cleaning member and the second cleaning member is made different, for example, rough dust is removed by the upstream cleaning member and fine dust is removed by the downstream side. Since it is possible to construct a cleaning method such as removing, various kinds of dust can be removed.

    The air conditioner indoor unit according to a sixth aspect of the present invention is the air conditioner indoor unit according to the first aspect, and each of the first cleaning member and the second cleaning member has a hair-like contact portion in contact with the filter. The contact portion of the second cleaning member has a hair foot different from the hair foot of the contact portion of the first cleaning member.

  In this air-conditioning indoor unit, for example, rough dust is removed by the upstream cleaning member and fine dust on the downstream side by changing the hairs of the contact portions of the first cleaning member and the second cleaning member to the filters. Since a cleaning system such as removing the dust can be constructed, various kinds of dust can be removed.

  The air conditioning indoor unit pertaining to the eighth aspect of the present invention is the air conditioning indoor unit pertaining to the seventh aspect, further comprising comb teeth. The comb-like teeth detach the dust scraped off by the first cleaning member from the first cleaning member.

  In this air conditioning indoor unit, the dust removed and captured by the first cleaning member and the second cleaning member can be finally gathered to the first cleaning member side, and the dust is detached only from the first cleaning member. Since it is sufficient to provide comb teeth, an increase in cost can be suppressed.

  In the air conditioning indoor unit pertaining to the first aspect of the present invention, the dust that has not been removed by the first cleaning member is removed by the second cleaning member, so that the dust removal rate from the filter is improved and various types of dust are removed. Can be removed.

  Further, in this air conditioning indoor unit, at least the filter moves relative to the first cleaning member and the second cleaning member, so that dust can be efficiently removed from the filter.

Furthermore, in this air conditioning indoor unit, the dust removed and captured by the first cleaning member and the second cleaning member can be finally gathered to the first cleaning member side and carried into one dust box. In addition, post-processing after removal of the dust becomes easy, and a single dust box is sufficient, so that an increase in cost can be suppressed.

  In the air conditioning indoor unit according to any one of the second to sixth aspects of the present invention, a cleaning system is constructed in which rough dust is removed by the upstream cleaning member and fine dust is removed on the downstream side. As a result, various kinds of dust can be removed.

In the air conditioning indoor unit pertaining to the seventh aspect of the present invention, the dust removed and captured by the first cleaning member and the second cleaning member can be finally gathered to the first cleaning member side, and with respect to the first cleaning member Since it is sufficient to provide comb-like teeth for removing dust only, it is possible to suppress an increase in cost.

The external view of the air-conditioning indoor unit which concerns on one Embodiment of this invention. Sectional drawing at the time of cut | disconnecting the air-conditioning indoor unit of FIG. 1 by the II-II line. The perspective view of the holding frame in which the filter was installed. The fragmentary sectional view of a filter cleaning mechanism. The perspective view of the assembly of a frame, a brush, and a brush cleaning comb.

  Hereinafter, an air conditioning indoor unit according to the present invention will be described with reference to the drawings. The following embodiments are specific examples of the present invention and do not limit the technical scope of the present invention.

(1) Configuration of Air Conditioning Indoor Unit 100 FIG. 1 is an external view of the air conditioning indoor unit 100 according to an embodiment of the present invention. In FIG. 1, an air conditioning indoor unit 100 is attached to an indoor wall surface or the like, and is connected to an outdoor unit (not shown) installed outdoors via a refrigerant pipe (not shown).

  The air conditioning indoor unit 100 can perform a cooling operation for cooling the room and a heating operation for heating the room. Further, the air conditioning indoor unit 100 can perform an automatic cleaning operation for automatically cleaning the filter 25 (see FIG. 2).

(2) Detailed Configuration FIG. 2 is a cross-sectional view of the air conditioning indoor unit 100 illustrated in FIG. 1 taken along the line II-II. In FIG. 2, the air conditioning indoor unit 100 includes a casing 11, an indoor heat exchanger 13, an indoor fan 15, a bottom frame 17, a filter 25, and a filter cleaning unit 70.

  For convenience of the following description, expressions indicating directions such as “up”, “down”, “left”, “right”, “front”, “back”, and the like are used. Each direction in the state installed in the etc. is represented.

(2-1) Casing 11
As shown in FIG. 1, the casing 11 has a box-like shape elongated in the lateral direction (W direction in FIG. 1). As shown in FIGS. 1 and 2, the casing 11 forms a three-dimensional space by the top plate 11a, the front plate 11b, and the back plate 11c, and the indoor heat exchanger 13, the indoor fan 15, the bottom frame 17, The filter cleaning part 70 is accommodated.

  The top plate 11 a constitutes the top surface of the casing 11. The front plate 11 b constitutes the front of the casing 11. The upper end of the front plate 11b is rotatably supported by a part of the top plate 11a, and can operate in a hinged manner.

  The back plate 11 c constitutes the back surface of the casing 11. The back plate 11c is attached to a mounting plate (not shown) installed on the wall surface of the room by screws or the like, so that the air conditioning indoor unit 100 is installed on the wall surface of the room.

  The top plate 11a of the casing 11 is provided with a top suction port 21 from the front side to the rear side of the top plate 11a. The indoor air in the vicinity of the top surface suction port 21 is taken into the casing 11 by driving the indoor fan 15 from the top surface suction port 21, and the front side heat exchange units 13 a and 13 b and the rear side heat exchange unit of the indoor heat exchanger 13. 13c is sent to each.

  A dotted arrow A in FIG. 2 represents the flow of indoor air sent to the indoor fan 15 via the top surface inlet 21 and the front heat exchange unit 13b.

  The lower surface of the casing 11 is constituted by a bottom portion 17 a of the bottom frame 17, and a lower surface suction port 22 and an air outlet 23 are formed on the lower surface. The lower surface suction port 22 is provided on the wall side of the air outlet 23 and is connected to the inside of the casing 11 by the suction flow path 16.

  From the lower surface suction port 22, indoor air in the vicinity of the lower surface suction port 22 is taken into the casing 11 by driving the indoor fan 15, passes through the suction flow path 16, and the rear heat exchange part 13 c of the indoor heat exchanger 13. Sent to.

  A dotted arrow B in FIG. 2 represents the flow of indoor air sent from the lower surface suction port 22 to the rear heat exchange unit 13c.

  The outlet 23 is provided on the front side of the air conditioning indoor unit 100 with respect to the lower surface inlet 22, and is connected to the inside of the casing 11 by the outlet channel 18. The room air sucked from the top surface suction port 21 and the lower surface suction port 22 is subjected to heat exchange in the indoor heat exchanger 13, and then blown out from the blower outlet 23 into the room through the blowout flow path 18.

  A dotted arrow C in FIG. 2 represents the flow of air sent from the blowout flow path 18 into the room through the blowout opening 23.

  The suction flow path 16 is formed along the flow path forming wall 17 b of the bottom frame 17 from the lower surface suction port 22. The blowout flow path 18 is formed along the flow path forming wall 17 b of the bottom frame 17 from the blowout opening 23. That is, the suction flow channel 16 and the blow flow channel 18 are located adjacent to each other with the flow channel forming wall 17b of the bottom frame 17 interposed therebetween.

  A horizontal flap 23 a is attached to the casing 11 so as to be rotatable in the vicinity of the air outlet 23. The horizontal flap 23 a is rotated by a flap driving motor (not shown), and opens and closes the air outlet 23 according to the operating state of the air conditioning indoor unit 100. Further, the horizontal flap 23a has a function of changing the blowing direction of the room air so that the room air blown out from the blower outlet 23 is guided in the direction desired by the user.

(2-2) Indoor heat exchanger 13
The indoor heat exchanger 13 includes a plurality of fins and a plurality of heat transfer tubes. The indoor heat exchanger 13 is attached to a part of the bottom frame 17 inside the casing 11. The indoor heat exchanger 13 functions as an evaporator or a condenser according to the operating state of the air conditioning indoor unit 100, and performs heat exchange between the refrigerant and the air passing through the indoor heat exchanger 13.

  As shown in FIG. 2, the indoor heat exchanger 13 has a substantially inverted V shape in which both ends are bent downward in a side view, and the indoor fan 15 is located below the indoor heat exchanger 13.

(2-3) Indoor fan 15
The indoor fan 15 is located inside the casing 11 and is a substantially cylindrical cross flow fan elongated in the W direction shown in FIG. When the indoor fan 15 is operated, indoor air is sucked in from the top surface suction port 21 and the bottom surface suction port 22, passes through the indoor heat exchanger 13, and then supplied into the room from the air outlet 23 (FIG. 2). (See dotted arrows A, B, and C).

(2-4) Bottom frame 17
The bottom frame 17 includes a bottom portion 17a and a flow path forming wall 17b. The bottom portion 17a is an element constituting at least a part of the lower surface of the casing 11, and is a portion of the bottom frame 17 exposed to the outside of the air conditioning indoor unit 100.

  The flow path forming wall 17 b is a part of the bottom frame 17 that is located inside the casing 11. The flow path forming wall 17 b extends upward from one end of the bottom portion 17 a and has a curved shape along the shape of the indoor fan 15.

(2-5) Filter 25
The filter 25 is disposed between the top plate 11a of the casing 11 and the indoor heat exchanger 13, and is detachably mounted inside the casing 11. The filter 25 covers the front heat exchange units 13a and 13b and the rear heat exchange unit 13c.

  The substantially central portion of the filter 25 extends along the top plate 11 a of the casing 11, and the front end portion 25 a and the rear end portion 25 b in the front-rear direction are further than the apex 13 d of the indoor heat exchanger 13. It hangs down. The filter 25 has a substantially inverted U shape that covers the upper side of the indoor heat exchanger 13.

  The rear end portion 25b of the filter 25 reaches a position that substantially covers the rear heat exchange portion 13c, and the front end portion 25a of the filter 25 covers the entire front heat exchange portion 13b and is also a front heat exchange portion. It has reached a position partially covering the upper part of 13a. Therefore, the part of the filter 25 corresponding to the rear heat exchange part 13 c can remove dust from the room air sucked from the lower surface suction port 22. Moreover, the part of the filter 25 corresponding to the front side heat exchange parts 13a and 13b can remove dust from the indoor air sucked from the top surface suction port 21. Thus, the filter 25 prevents the surface of the indoor heat exchanger 13 from being contaminated by dust in the indoor air.

  The filter 25 is, for example, a mesh that is plain or twilled with resin yarn, is formed in a ring shape, and is stretched over the support frame 27.

  FIG. 3 is a perspective view of the holding frame 40 in which the filter 25 is installed. In FIG. 3, two filters 25 laid across the support frame 27 (see FIG. 1) are provided so as to be arranged on the right side and the left side in a front view of the holding frame 40. Since the filter 25 is not provided with reinforcing edges and ribs as found in a general filter, the filter 25 cannot maintain a stable shape by itself. Therefore, the filter 25 can be maintained in a predetermined ring shape by being installed on the holding frame 40 while being stretched over the support frame 27.

(2-6) Filter cleaning unit 70
FIG. 4 is a partial cross-sectional view of the filter cleaning unit 70. In FIG. 4, the filter cleaning unit 70 includes a filter drive mechanism 71, a first filter cleaning mechanism 73, and a second filter cleaning mechanism 75.

  The filter driving mechanism 71 rotates the filter 25 on a predetermined track. The first filter cleaning mechanism 73 removes dust attached to the filter 25. The second filter cleaning mechanism 75 removes dust attached to the filter 25 at a position different from that of the first filter cleaning mechanism 73.

  The filter cleaning unit 70 reciprocates the filter 25 along a predetermined trajectory by the filter driving mechanism 71, and removes dust adhering to the filter 25 by the first filter cleaning mechanism 73 and the second filter cleaning mechanism 75.

(3) Detailed Description of Filter Cleaning Unit 70 (3-1) Filter Drive Mechanism 71
The filter drive mechanism 71 includes a support frame 27, a roller 32 a, a roller drive motor 32 b, and a holding frame 40.

(3-1-1) Support frame 27
The support frame 27 supports the ring-shaped filter 25 from the inside.

(3-1-2) Roller 32a
The roller 32a contacts the ring-shaped filter 25 from the inside thereof and transmits the rotational force. A so-called pile-woven fabric base fabric is affixed to the peripheral surface of the roller 32a. The fabric base fabric on the peripheral surface of the roller 32 a enters the mesh of the filter 25, and slippage hardly occurs between the roller 32 a and the filter 25.

(3-1-3) Roller drive motor 32b
The roller drive motor 32b is disposed on the side of the holding frame 40 as shown in FIG. The output shaft of the roller drive motor 32b is connected to the rotation shaft of the roller 32a. When the roller drive motor 32b is driven, the roller 32a rotates and the filter 25 circulates.

(3-1-4) Holding frame 40
The holding frame 40 holds the roller 32a, the roller drive motor 32b, and the support frame 27. As shown in FIG. 3, the holding frame 40 includes a center plate 41 located in the center in the front view, and a left side plate 42 and a right side plate 43 positioned on the left and right sides of the center plate 41.

  The center plate 41 and the left side plate 42 hold the pair of filters 25, the support frame 27, and the roller 32a, and the center plate 41 and the right side plate 43 further hold the other set of filters 25, the support frame 27. And the roller 32a.

(3-2) First filter cleaning mechanism 73
The first filter cleaning mechanism 73 is provided in the casing 11 so as to face the filter 25 in the vicinity of the folded portion at the bottom of the filter 25. The first filter cleaning mechanism 73 includes a frame 31, a brush 33, a brush drive motor 34 (see FIG. 3), a brush cleaning comb 35, a dust box 37, and a compression roller 38.

(3-2-1) Frame 31
FIG. 5 is a perspective view of the assembly 30 of the frame 31, the brush 33, and the brush cleaning comb 35 of the first filter cleaning mechanism 73. In FIG. 5, the frame 31 has an elongated shape along the longitudinal direction (W direction in FIG. 1) of the air conditioning indoor unit 100. A brush 33 is detachably attached to the inside of the frame 31.

  As shown in FIG. 4, an opening 31 a is formed on the upper surface of the frame 31. Since the frame 31 is positioned below the folded portion under the filter 25, a part of the brush 33 is exposed to the space above the frame 31 through the opening 31a of the frame 31, and the opening 31a. The filter 25 is directly contacted via

(3-2-2) Brush 33
As shown in FIG. 5, the brush 33 has an elongated shape along the frame 31, and a cross section perpendicular to the longitudinal direction has a substantially circular shape. The brush 33 removes dust from the filter 25 by directly contacting the filter 25.

  As shown in FIG. 4, the brush 33 includes a core material 33 a and a plurality of linear hair materials 33 b provided on the peripheral surface of the core material 33 a. The hair material 33b has a length (hair foot) that can contact the filter 25. The brush 33 is rotatably supported on the frame 31.

  The brush drive motor 34 that drives the brush 33 is a stepping motor. Since the output shaft of the brush drive motor 34 is connected to the rotation shaft of the brush 33, the brush 33 rotates when the brush drive motor 34 is driven.

  The filter 25 and the brush 33 can move relatively. When the brush 33 rotates, the movement of the filter 25 may be stopped. Conversely, when the filter 25 is moving, the brush 33 may be stopped.

(3-2-3) Brush cleaning comb 35
The brush cleaning comb 35 is attached to the frame 31 as shown in FIG. The brush cleaning comb 35 is disposed along the rotation axis direction of the brush 33. Further, the brush cleaning comb 35 protrudes from the back surface of the frame 31 toward the brush 33. Further, since the brush cleaning comb 35 is inclined so as to oppose the rotation direction of the brush 33 (brush 33 in FIG. 5: the direction of the arrow), the brush cleaning comb 35 rotates the brush 33 in the direction of the arrow in FIG. When doing so, the dust between the bristle members 33b of the brush 33 is scraped off.

(3-2-4) Dust box 37
As shown in FIG. 4, the dust box 37 is disposed below the brush 33 and the brush cleaning comb 35. In the dust box 37, dust scraped from the brush 33 by the brush cleaning comb 35 is stored.

  Further, since the dust box 37 is detachably attached to the frame 31, the user can easily remove the dust box 37 from the frame 31 and the casing 11 and treat the dust accumulated in the dust box 37.

(3-2-5) Compression roller 38
The compression roller 38 is a cylindrical rod-shaped member. Further, the compression roller 38 has a frame 3
1 is rotatably supported. Further, as shown in FIGS. 4 and 5, the compression roller 38 is positioned in contact with the brush 33 in the vicinity of the brush cleaning comb 35.

  When the brush 33 rotates in the direction of the arrow in FIG. 5, the brush 33 follows the rotation of the brush 33 and rotates in the direction opposite to the rotation direction of the brush 33. Since the dust accumulated in the dust box 37 is compressed by the compression roller 38, a relatively large amount of dust enters the dust box 37.

(3-3) Second filter cleaning mechanism 75
The second filter cleaning mechanism 75 is provided to remove dust that could not be removed by the first filter cleaning mechanism 73.

  The installation of the second filter cleaning mechanism 75 is intended to remove not only dust that the first filter cleaning mechanism 73 has missed but also dust that cannot be removed by the performance inherent to the first filter cleaning mechanism 73.

  Therefore, the second filter cleaning mechanism 75 includes a second brush 53 of a type different from the brush 33 of the first filter cleaning mechanism 73.

(3-3-1) Second brush 53
The second brush 53 is a so-called etiquette brush, and includes a base 53a made of a synthetic resin and a woven fabric 53b woven with piles. The woven fabric 53b is affixed to the base 53a. The fabric base fabric 53b is woven so that the hair called a pile covering the surface of the fabric is inclined at a certain angle, and fine dust can be captured.

  For example, of the dust adhering to the filter 25, large dust such as cotton dust is removed by the brush 33 of the first filter cleaning mechanism 73, but fine dust may not be removed.

  Therefore, by arranging the second brush 53 on the downstream side of the brush 33 in the moving direction of the filter 25 at the time of cleaning, dust that could not be removed by the brush 33 can be removed by the second brush 53.

  In the present embodiment, the fabric base fabric 53b woven in piles is used for the second brush 53, but the present invention is not limited to this, and any form that can remove dust that cannot be removed by the brush 33 is used. It can be adopted as appropriate.

(3-3-2) Mounting member 63
The attachment member 63 fixes the second brush 53 at a predetermined position. The attachment member 63 is located along the orbit of the filter 25, and the position thereof is on the downstream side of the first filter cleaning mechanism 73 in the circulation direction of the filter 25 (the arrow direction of the filter 25 in FIG. 4).

  The base 53 a of the second brush 53 is fixed to the mounting member 63 so that the fabric base fabric 53 b of the second brush 53 contacts the filter 25. It is preferable that the fabric base fabric 53b push the filter 25 forward (in a direction away from the indoor heat exchanger 13).

(4) Comparison between Brush 33 and Second Brush 53 (4-1) Configuration In the brush 33, resin-made bristle materials 33b are radially implanted in the core material 33a, and the height (bristle) of the bristle material 33b. The legs are long. On the other hand, the surface of the fabric base fabric 53 b of the second brush 53 is covered with an extremely short pile as compared with the bristle material 33 b of the brush 33.

(4-2) Contact Angle and Contact Density with Filter 25 Accordingly, since the bristle material 33b flows in the moving direction of the filter 25, the contact area of the brush 33 varies. On the other hand, since the pile corresponding to the bristle material is extremely short in the second brush 53, the contact area with the filter 25 is constant regardless of whether the filter 25 is stopped or moved.

  In the present embodiment, the contact area between the second brush 53 and the filter 25 is set to be larger than the contact area between the brush 33 and the filter 25, and the contact density is increased by that much and cannot be removed by the brush 33. Dust can be removed.

(4-3) Contact angle with the filter 25 In the brush 33, since the bristle material 33b is radially implanted in the core material 33a, the contact angle of the bristle material 33b with respect to the filter 25 cannot be specified.

  However, in the second brush 53, the pile of the fabric base fabric 53b is inclined in a certain direction. In the present embodiment, the tip of the pile contacts in the direction opposite to the moving direction of the filter 25, and fine dust that cannot be removed by the brush 33 can be accumulated from the tip of the pile to the root.

(5) Operation of Filter Cleaning Unit 70 The air conditioning indoor unit 100 includes a control unit (not shown) that controls the operation of the filter cleaning unit 70 in the casing 11. The control unit counts the operation time of the air conditioning indoor unit 100. When the accumulated operation time from the previous filter cleaning operation reaches a predetermined time (for example, 18 hours), the filter 25 is rotated while rotating the brush 33. Is circulated a predetermined number of times (for example, once).

  Meanwhile, the brush 33 and the filter 25 move relative to each other, so that the bristle material 33b of the brush 33 enters the mesh of the filter 25 and scrapes out the dust stuck in the mesh. The dust accumulates in a dust box 37 located below the brush 33.

  Dust (for example, fine dust) that has passed through the brush 33 as the filter 25 moves is captured by the pile of the fabric base fabric 53b of the second brush 53 located downstream. Since the pile is inclined in the direction opposite to the moving direction of the filter 25, the pile scrapes off fine dust remaining in the mesh of the filter 25 and accumulates it at the root from the tip of the pile.

  The filter cleaning unit 70 causes the filter 25 to circulate in a direction opposite to that during cleaning after the filter cleaning operation is completed. At this time, the dust accumulated in the pile of the second brush 53 moves without the filter 25 being opposed to the inclination direction of the pile, so that the dust accumulated and compressed and moved forward from the root of the pile. Then, it moves toward the brush 33 together with the filter 25.

  The dust that has moved from the second brush 53 is stored in the second brush 53 until just before it, grows in the meantime and is sized to be scraped off by the brush 33, and is easily scraped off by the brush 33. Are accumulated in the dust box 37. Further, the dust that has been captured by the brush 33 is shaken off by the brush cleaning comb 35 into the dust box 37.

  In the above operation, the filter cleaning operation can be forcibly executed using a remote controller (not shown).

(6) Features (6-1)
In the air conditioning indoor unit 100, in the cleaning operation of the filter 25, dust that has not been removed by the brush 33 is removed by the second brush 53, so that the dust removal rate from the filter 25 is improved and various dusts are removed. can do.

(6-2)
In the air conditioning indoor unit 100, by varying at least one of the contact area, the contact density, the contact angle, the material of the contact portion, and the hair of the contact portion with respect to the filter 25 of each of the brush 33 and the second brush 53, for example, Since it is possible to construct a cleaning system in which rough dust is removed by the upstream cleaning member and fine dust is removed on the downstream side, various dusts can be removed.

(6-3)
In the air conditioning indoor unit 100, at least the filter 25 moves relative to the brush 33 and the second brush 53, so that dust can be efficiently removed from the filter.

(6-4)
In the air conditioning indoor unit 100, the dust removed and captured by the brush 33 and the second brush 53 can be finally gathered to the brush 33 side, so that post-processing after dust removal is easy.

(6-5)
In the air conditioning indoor unit 100, the dust removed and captured by the brush 33 and the second brush 53 can be finally gathered to the brush 33 side and carried into one dust box 37. In addition to the ease of processing, a single dust box 37 is sufficient, and an increase in cost can be suppressed.

(6-6)
The air-conditioning indoor unit 100 includes a brush cleaning comb 35 that can finally collect dust removed and captured by the brush 33 and the second brush 53 toward the brush 33, and removes dust only from the brush 33. Therefore, an increase in cost can be suppressed.

<Other embodiments>
In the said embodiment, although the brush 33 and the 2nd brush 53 are the cleaning members from which a property differs, it is not limited to this.

  For example, if at least one of the plurality of cleaning members is disposed in the dust box 37 and the remaining cleaning members are disposed outside the dust box 37, the plurality of cleaning members may be the same, Alternatively, at least one of the contact area, the contact density, the contact angle, the material of the contact portion, and the hair of the contact portion may be different.

  As described above, the presence of the cleaning member that removes the dust adhered to the filter 25 at a location away from the dust box 37 causes the dust that has risen in the dust box 37 because it is near the dust box 37 to be taken in again and removed. Dust that could not be cleaned can be cleaned away from the dust box 37, and the dust removal rate is improved.

  Of course, the effect of improving the dust removal rate by simply increasing the number of cleaning members can be expected.

  As described above, according to the present invention, dust adhering to the filter can be removed efficiently and reliably, so that the present invention is useful not only for air-conditioning indoor units but also for devices with an automatic filter cleaning function.

25 Filter 33 Brush (first cleaning member)
33b Hair material (contact part)
35 Brush cleaning comb (comb teeth)
37 Dust box 53 Second brush (second cleaning member)
53b Woven fabric (contact part)
100 Air conditioning indoor unit

JP 2006-71182 A

Claims (7)

An air conditioning indoor unit having a filter cleaning function for removably moving the filter (25) in a predetermined movement trajectory to remove dust adhering to the filter (25),
A first cleaning member (33) that contacts the moving filter (25) and scrapes off the dust;
The filter (25) is disposed on the upstream side of the first cleaning member (33) during the backward movement of the reciprocating movement of the filter (25) along the movement path of the filter (25), and the dust on the filter (25) is removed. A second cleaning member (53) to scrape;
A dust box (37) in which the dust scraped from the filter (25) is stored;
With
The first cleaning member (33) is disposed in the dust box (37), and the second cleaning member (53) is disposed outside the dust box (37);
The second cleaning member (53) contacts the filter (25) in a mode different from the mode in which the first cleaning member (33) contacts the filter (25), and the first cleaning member (33) Scrapes dust different from the dust scraped from the filter (25),
Air conditioning indoor unit (100). The second cleaning member (53) contacts the filter (25) with an area different from the area where the first cleaning member (33) and the filter (25) contact.
The air conditioning indoor unit (100) according to claim 1. The second cleaning member (53) contacts the filter (25) at a density different from the density at which the first cleaning member (33) and the filter (25) are in contact with each other.
The air conditioning indoor unit (100) according to claim 1. The second cleaning member (53) contacts the filter (25) at an angle different from an angle between the first cleaning member (33) and the filter (25).
The air conditioning indoor unit (100) according to claim 1. The second cleaning member (53) is connected to the filter (25) by a contact portion (53b) having a material different from the material of the portion of the first cleaning member (33) that contacts the filter (25). Contact,
The air conditioning indoor unit (100) according to claim 1. Each of the first cleaning member (33) and the second cleaning member (53) has a hair-like contact portion (33b, 53b) that contacts the filter (25),
The contact portion (53b) of the second cleaning member (53) has a hair foot different from the hair foot of the contact portion (33b) of the first cleaning member (33).
The air conditioning indoor unit (100) according to claim 1. Comb teeth (35) for detaching the dust scraped by the first cleaning member (33) from the first cleaning member (33),
The air conditioning indoor unit (100) according to claim 1 .

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