JP4941318B2 - Indoor unit of air conditioner - Google Patents

Description

  The present invention relates to an indoor unit of an air conditioner configured to remove dust trapped by an air filter.

  2. Description of the Related Art Conventionally, an indoor unit of an air conditioner provided with an air filter at an air suction port has been known that includes dust removing means for removing dust trapped by the air filter. In this type of indoor unit, for example, as disclosed in Patent Documents 1 and 2, the dust attached to the air filter is configured to be sucked by a suction nozzle serving as a dust removing unit, or a brush serving as a dust removing unit. The part is configured to scrape off dust.

In any of the above-described configurations, components such as a heat exchanger and an indoor fan are disposed in a box-shaped casing, and an air filter, a dust removing means, and the like are provided at the suction port of the indoor fan. It is arranged. The indoor side of the casing is covered with an indoor panel.
JP 2005-83612 A JP 2007-40689 A

  By the way, in the configuration in which the dust in the air is removed by the air filter as in the conventional example, dust in the air is removed when passing through the air filter. A large amount of dust is contained in the air on the upstream side. Then, even in the casing, a large amount of dust adheres to the parts and the like located on the upstream side of the air filter, and there is a possibility that the user who looks at the inside of the casing at the time of maintenance may feel uncomfortable.

  In particular, when a dust removal mechanism for removing dust trapped by the air filter is provided on the upstream side of the air filter as in the above-described conventional example, the dust removal mechanism is driven and controlled. Since a plurality of wires connected to the drive control unit are located on the upstream side of the air filter, a large amount of dust tends to adhere to the wires.

  The present invention has been made in view of the above points, and an object of the present invention is to provide the dust in an indoor unit of an air conditioner having a dust removing mechanism for removing dust attached to an air filter. An object is to obtain a configuration in which dust is not attached to the wiring by devising the arrangement of the wiring connected to the drive control unit for driving and controlling the removal mechanism.

  In order to achieve the above object, in the indoor unit (3) of the air conditioner (1) according to the present invention, the partition plate (18, 101) is divided into an upstream side and a downstream side of the air filter (30) ( The wiring (120) connected to the drive control unit (105) that controls the drive of the dust removal mechanism (40, 50, 80) is arranged on the downstream side of the air filter of 25) so that dust does not adhere to the wiring (120) I did it.

  Specifically, in the first invention, in the casing (18, 101), an indoor heat exchanger (22), an indoor fan (21) for blowing out air sucked from the room to the indoor side, and the indoor fan (21 ) And an indoor unit of an air conditioner provided with an air filter (30) provided on the suction side.

And the partition plate (25) provided so that the inside of the said casing (18,101) may be divided into the upstream and downstream of the said air filter (30), and the dust trapped by the said air filter (30) are removed. A dust removal mechanism (40, 50, 80) for driving , a drive control unit (105) having electric parts for controlling the drive of the dust removal mechanism (40, 50, 80), and the drive control unit (105) Wiring (120) connected to the partition plate (25), the wiring (120) is arranged on the downstream side of the air filter, and on the downstream side of the air filter of the partition plate (25), An electrical component box (20) having electrical components for controlling the operation of the components of the main unit (10) including the heat exchanger (22) and the indoor fan (21) is provided, and the drive control unit ( 105) is equipped with the dust removal mechanism (40, 50, 80) and separate from the main unit (10). The wiring (120) is provided in the configured cleaning unit (100), and the wiring (120) transmits and receives signals between the electrical component of the drive control unit (105) and the electrical component of the electrical component box (20). It shall be electrically connected as possible .

  With this configuration, since the wiring (120) can be arranged not on the upstream side of the air filter (30) containing a lot of dust in the air but on the downstream side of the air filter (30) with little dust, the wiring (120) It is possible to prevent dust from adhering to the surface as much as possible. Therefore, when the user looks inside the casing (18, 101) during maintenance or the like, it is possible to prevent the user from feeling uncomfortable.

  In the above-described configuration, the partition plate (25) has an opening (25a) and a lid member (106) covering the upstream side of the air filter of the opening (25a). (120) shall be arrange | positioned downstream of the air filter of the said opening (25a) (2nd invention).

  Accordingly, if the lid member (106) is removed, the wiring (120) can be maintained from the indoor side, and the maintenance workability of the wiring (120) can be improved. Therefore, it is possible to achieve both the prevention of dust adhesion to the wiring (120) and the improvement of the maintenance workability of the wiring (120).

  Further, it is preferable that a holding portion (25b) for holding the wiring (120) is provided on the downstream side of the air filter of the partition plate (25) (third invention). In this way, the wiring (120) can be reliably held on the downstream side of the air filter of the partition plate (25). Therefore, the wiring (120) can be prevented from moving in the casing (18, 101), and the wiring (120) can be prevented from coming into contact with or disconnected from other parts.

  The holding portion (25b) is preferably formed in a cylindrical shape so as to surround the wiring (120) (fourth invention). Thereby, while being able to hold | maintain the said wiring (120) more reliably, it can prevent reliably that dust adheres to this wiring (120). Furthermore, it is preferable that an opening (25c) into which the wiring (120) can be inserted is provided on the side surface of the holding portion (25b) so as to extend in the cylinder axis direction (fifth invention). Thus, the wiring (120) can be easily fitted into the holding portion (25b), and the wiring (120) can be easily installed.

  As described above, according to the indoor unit (3) of the air conditioner (1) according to the present invention, the partition plate (25) that divides the casing (18, 101) into the upstream side and the downstream side of the air filter (30). ) Since the wiring (120) connected to the drive control unit (105) of the dust removal mechanism (40, 50, 80) is disposed downstream of the air filter, dust adheres to the wiring (120). It is possible to prevent the user who looks inside the casing (18, 101) from feeling unpleasant during maintenance or the like.

  Further, according to the second invention, the wiring (120) is formed on the partition plate (25) and downstream of the air filter of the opening (25a) covered with the lid member (106) on the upstream side of the air filter. Therefore, it is possible to improve workability when maintaining the wiring (120) while preventing dust from adhering to the wiring (120).

  According to the third aspect of the invention, since the holding portion (25b) for holding the wiring (120) is provided on the downstream side of the air filter of the partition plate (25), the wiring (120 ) Can be prevented from moving and coming into contact with or disconnecting from other parts.

  According to the fourth aspect of the invention, since the holding portion (25b) is formed in a cylindrical shape so as to surround the wiring (120), the wiring (120) can be reliably held. Thus, it is possible to more reliably prevent dust from adhering to the wiring (120).

  Further, according to the fifth invention, the side surface of the holding portion (25b) is provided with the opening (25c) through which the wiring (120) can pass and extends in the cylinder axis direction. 120) can be easily fitted into the holding portion (25b), and the installation work of the wiring (120) is facilitated.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature and is not intended to limit the present invention, its application, or its use.

  This embodiment relates to an air conditioner (1) provided with an indoor unit (3) according to the present invention. In this air conditioner (1), the indoor unit (3) is installed on the ceiling of the indoor space. Hereinafter, the configuration of the air conditioner (1) according to the present embodiment will be described first, and then the configuration of the indoor unit (3) will be described.

<overall structure>
As shown in FIG. 1, the air conditioner (1) includes an outdoor unit (2) and an indoor unit (3). The outdoor unit (2) is provided with a compressor (4), an outdoor heat exchanger (5), an expansion valve (6), a four-way switching valve (7), and an outdoor fan (8). The indoor unit (3) is provided with an indoor heat exchanger (22) and an indoor fan (21).

  In the outdoor unit (2), the discharge side of the compressor (4) is connected to the first port (P1) of the four-way switching valve (7). The suction side of the compressor (4) is connected to the third port (P3) of the four-way switching valve (7).

  The outdoor heat exchanger (5) is configured as a cross fin type fin-and-tube heat exchanger. One end of the outdoor heat exchanger (5) is connected to the fourth port (P4) of the four-way switching valve (7). The other end of the outdoor heat exchanger (5) is connected to the liquid side closing valve (9a).

  The outdoor fan (8) is provided in the vicinity of the outdoor heat exchanger (5). In the outdoor heat exchanger (5), heat exchange is performed between the outdoor air sent by the outdoor fan (8) and the refrigerant flowing through the heat exchanger (5). Between the outdoor heat exchanger (5) and the liquid side closing valve (9a), an expansion valve (6) having a variable opening is provided. The second port (P2) of the four-way selector valve (7) is connected to the gas side shut-off valve (9b).

  The four-way selector valve (7) is in a first state in which the first port (P1) and the second port (P2) communicate with each other and the third port (P3) and the fourth port (P4) communicate with each other. (The state indicated by the solid line in FIG. 1), the second port (P1) and the fourth port (P4) communicate with each other, and the second port (P2) and the third port (P3) communicate with each other. The state (state indicated by a broken line in FIG. 1) can be switched.

  In this air conditioner (1), the heating operation is performed when the four-way switching valve (7) is in the first state, and the cooling operation is performed when the four-way switching valve (7) is in the second state. In the heating operation, in the refrigerant circuit shown in FIG. 1, a vapor compression refrigeration cycle in which the outdoor heat exchanger (5) functions as an evaporator and the indoor heat exchanger (22) functions as a condenser is performed. On the other hand, in the cooling operation, a vapor compression refrigeration cycle in which the outdoor heat exchanger (5) functions as a condenser and the indoor heat exchanger (22) functions as an evaporator is performed in the refrigerant circuit shown in FIG.

<Configuration of indoor unit>
Below, the structure of the said indoor unit (3) is demonstrated in detail based on FIGS. 2-4.

  As shown in FIGS. 2 and 3, the indoor unit (3) includes a main unit (10) including the indoor fan (21) and an indoor heat exchanger (22), and a chamber of the main unit (10). A cleaning unit (100) arranged on the inner side and a decorative panel (11) covering the indoor side of the cleaning unit (100) are provided. That is, the indoor unit (3) is formed by laminating the main unit (10), the cleaning unit (100), and the decorative panel (11) in order from the top as shown in FIG.

  The main unit (10) includes a box-shaped main casing (18) installed so as to open toward the room. In the main casing (18), an indoor fan (21), indoor heat An exchanger (22), a drain pan (23), a bell mouth (24) and an electrical component box (20) are disposed.

  A heat insulating material (17) is laminated on the inner surface of the main casing (18). Further, as described later, the main casing (18) is suspended and supported from the ceiling surface of the ceiling so that the opening side is positioned on the indoor side.

  The indoor fan (21) is a so-called turbo fan. As shown in FIG. 2, the indoor fan (21) is disposed near the center of the main casing (18) of the main unit (10), and is located above the suction port (13) of the decorative panel (11) described later. ing. The indoor fan (21) includes a fan motor (21a) and an impeller (21b). The fan motor (21a) is fixed to the top plate of the main casing (18). The impeller (21b) is connected to the rotation shaft of the fan motor (21a).

  A bell mouth (24) is provided below the indoor fan (21) so as to communicate with the suction port (13). As shown in FIG. 2, the bell mouth (24) has a space upstream of the indoor heat exchanger (22) in the indoor unit (3). The indoor fan (21) side and the suction grille (12) side It is divided into and. By providing the bell mouth (24), the air sucked from below the bell mouth (24) by the indoor fan (21) is blown out in the circumferential direction above the bell mouth (24).

  Further, as shown in FIG. 3, the bell mouth (24) has an opening (24a) at a position corresponding to one of the four corners of the rectangular parallelepiped main body casing (18). . This opening (24a) constitutes an inlet of an introduction duct (86) described later.

  Note that the opening (24a) is located on the bottom side of the indoor unit (3) without the cleaning unit (100) (main unit (10) only) so that the air blown from the indoor fan (21) does not leak. Is closed by a closing cover (95) (not shown).

  The indoor heat exchanger (22) is formed in a square shape in plan view, and is disposed in the main body casing (18) so as to surround the indoor fan (21). In the indoor heat exchanger (22), heat exchange is performed between the indoor air (blowing air) sent by the indoor fan (21) and the refrigerant circulating in the heat exchanger (22).

  The drain pan (23) is provided below the indoor heat exchanger (22). The drain pan (23) is for receiving drain water generated by condensation of moisture in the air in the indoor heat exchanger (22). The drain pan (23) is provided with a drain pump for draining drain water (not shown). In addition, the drain pan (23) is inclined so that drain water collects at the location where the drain pump is installed.

  The electrical component box (20) contains various electrical components for controlling the operation of components such as the indoor fan (21) in the indoor unit (3). As shown in FIG. It is arranged below the bell mouth (24) and outside the inlet so as not to overlap the inlet of the indoor fan (21) in plan view. In the present embodiment, the electrical component box (20) is arranged on the opposite side of the opening (24a) formed in the bell mouth (24) with the suction port of the indoor fan (21) in between. .

  The cleaning unit (100) includes a circular air filter (30), a dust removing means (50), a dust transporting means (80), a dust collection box in a substantially rectangular chamber casing (101) in plan view. (90) etc. are arranged. That is, the cleaning unit (100) removes dust attached to the air filter (30) located on the suction side of the indoor fan (21) by the dust removing means (50) and removes it as will be described in detail later. The collected dust can be transferred into the dust collection box (90) by the dust transfer means (80) and stored in the dust collection box (90).

  The chamber casing (101) is formed in the same size as the main body casing (18) of the main body unit (10), and as shown in FIG. 102) is disposed on the indoor side of the main casing (18). In addition, a decorative panel (11) is attached to the indoor side of the chamber casing (101) with a seal member (103) interposed therebetween.

  The chamber casing (101) is formed with four air passages (101a) along each side. Each air passage (101a) is provided in the main unit (10) so as to communicate with a space in the main casing (18) formed outside the indoor heat exchanger (22). The air after heat exchange with the refrigerant in the heat exchanger (22) is configured to flow toward the indoor side. That is, the air flowing through the air passage (101a) of the chamber casing (101) is supplied to the indoor space from the air outlet (14) formed in the decorative panel (11). As shown in FIG. 2, the portion of the chamber casing (101) that forms the inside of the air passage (101a) is connected to the drain pan (23) of the main unit (10) via a seal member (104). Is supported from below.

  The decorative panel (11) is formed in a rectangular plate shape in plan view (see FIG. 3). As shown in FIG. 2, the decorative panel (11) has a plan view shape that is a plan view shape of the main body casing (18) of the main body unit (10) and the chamber casing (101) of the cleaning unit (100). It is formed to be one size larger than that. As described above, the decorative panel (11) is attached so as to cover the lower side of the chamber casing (101) with the seal member (103) interposed therebetween, whereby the decorative panel (11) It will be exposed indoors in the state shown in FIG.

  Moreover, as shown in FIG. 3, the said decorative panel (11) is formed with one suction inlet (13) and four blower outlets (14, 14,...). The suction port (13) is formed in a substantially rectangular shape at the center of the decorative panel (11), and is fitted with a suction grill (12) having a slit portion (12a) described later. Each said blower outlet (14) is formed in the elongate rectangular shape, and it follows each side of the said decorative panel (11) corresponding to the air path (101a, 101a, ...) of the said cleaning unit (100). Is provided. Each air outlet (14) is provided with a wind direction adjusting plate (15) (see FIG. 2 and the like). The wind direction adjusting plate (15) is configured to rotate and adjust the wind direction (the blowing direction).

  The suction grill (12) is a cover member having a slit portion (12a) in which a plurality of slit-shaped openings are formed at the center thereof, and covers the suction port (13) of the decorative panel (11). It is attached. Further, the suction grill (12) is provided with a nozzle insertion portion (110) for inserting a nozzle of a cleaner. The nozzle insertion portion (110) is configured to be able to insert the nozzle of the cleaner so that the dust stored in the dust collection box (90) of the cleaning unit (100) can be collected by the cleaner. Yes.

  Further, the decorative panel (11), as will be described later, when a predetermined amount or more of dust is stored in the dust collection box (90) of the cleaning unit (100), or dust removing means (50) An LED (16) that is turned on when dust adhering to the air filter (30) is removed is provided.

<Configuration of cleaning unit>
Next, the structure in the said cleaning unit (100) is demonstrated in detail below based on FIGS.

  As described above, the cleaning unit (100) includes the air filter (30), the dust removing means (50), the dust conveying means (80), the dust collecting unit in the substantially rectangular chamber casing (101) in plan view. A box (90) and an electrical component box (105) are arranged to clean the air filter (30) located below the inlet of the indoor fan (21) of the main unit (10). Unit.

  The cleaning unit (100) is provided with a partition plate (25) so as to cover the lower part of the bell mouth (24). For example, as shown in FIG. 2, the partition plate (25) partitions the space between the bell mouth (24) and the suction grill (12) vertically. That is, the partition plate (25) partitions the upstream space of the indoor heat exchanger (22) in the casing (18, 100) into an upstream side and a downstream side of the air filter (30).

  As shown in FIGS. 2 and 5, a vent hole (26) is formed in the center of the partition plate (25) for allowing air sucked from the suction port (13) to flow into the bell mouth (24). ing. The vent hole (26) is partitioned in a sector shape by three radial beam portions (27) in which the circular hole extends in the radial direction. The radial beam portions (27) are connected to each other at the circular center of the vent hole (26) so that two of them are arranged in a straight line, and a cylindrical filter rotation shaft (28) is located below the central portion. Protrusions are formed. The filter rotation shaft (28) is a rotation shaft for rotating the air filter (30). One of the radial beam portions (27) includes a filter presser (29) for pressing the air filter (30) against the rotating brush (51) of the dust removing means (50) from above. Are provided.

  As will be described in detail later, a service hole (25a) (opening) is formed on the side of the vent hole (26) of the partition plate (25) so as to be connected to the vent hole (26). A service lid (106) (lid member) is disposed so as to close the service hole (25a) (see FIGS. 19 and 20).

  As shown in FIG. 5, the air filter (30) is disposed below the vent hole (26) of the partition plate (25) and has a larger diameter than the bell mouth (24) and the vent hole (26). It is formed in a disk shape. Specifically, the air filter (30) includes an annular filter body (31) and a mesh member (37). A gear portion (32) is provided on the outer peripheral surface of the filter main body (31), while six radial ribs (34) extending radially in the radial direction are provided at the center of the filter main body (31). A cylindrical shaft insertion portion (33) to be supported is provided. That is, each radial rib (34) extends radially from the shaft insertion portion (33) and is connected to the filter body (31). In addition, an annular inner circumferential rib (35) and outer circumferential rib (36) arranged concentrically with the filter body (31) are provided inside the filter body (31). The outer circumferential rib (36) has a larger diameter than the inner circumferential rib (35). Here, as shown in FIG. 6, the shaft insertion portion (33) has a filter rotating shaft (28) whose inner diameter is formed in the partition plate (25) and a head of a set screw (28a) described later. It is formed in a larger diameter than.

  The mesh member (37) is stretched over the entire inside of the filter body (31). The air sucked from the suction port (13) passes through the mesh member (37) of the air filter (30) and flows into the bell mouth (24). At that time, dust in the air is captured by the mesh member (37).

  The air filter (30) is urged downward by the filter retainer (29) described above coming into contact with the upper surface of each annular circumferential rib (35, 36). Thus, the air filter (30) is pressed against the rotating brush (51) of the dust removing means (50) described later. Therefore, with this configuration, it is possible to improve the dust removal efficiency by the dust removing means (50).

  As shown in FIGS. 5 and 6, the air filter (30) is fitted so that the shaft insertion portion (33) is rotatable with respect to the filter rotation shaft (28) of the partition plate (25). Below the air filter (30), a dust container (60) of the dust removing means (50) is disposed, and the air filter (30) is fitted into the filter rotating shaft (28). A filter mounting portion (68) of the dust container (60) described later and a filter rotation shaft (28) of the partition plate (25) are fixed by a set screw (28a). Thus, the air filter (30) is held between the partition plate (25) and the dust container (60).

  In the vicinity of the air filter (30), as shown in FIGS. 4 and 7, filter driving means (40) for rotationally driving the air filter (30) is provided. As shown in FIG. 7, the filter driving means (40) includes a filter driving motor (41) and a limit switch (44). A drive gear (42) is provided on the drive shaft of the filter drive motor (41), and the drive gear (42) meshes with the gear portion (32) of the air filter (30). A switch actuating portion (43) that is a projecting piece is provided on one end surface (lower surface in the example in the figure) of the drive gear (42). The switch operating portion (43) moves the lever (44a) by contacting the lever (44a) of the limit switch (44) by the rotation of the drive gear (42). When the lever (44a) is operated, the limit switch (44) detects it. That is, the switch actuating part (43) and the limit switch (44) are configured to detect the rotation of the drive gear (42), and accordingly, according to the rotation speed of the drive gear (42). It is possible to detect the timing for operating the dust removing means (50), or to detect an abnormality when the drive gear (42) is not rotating.

  Next, the dust removing means (50), the dust amount detecting means (70), the dust conveying means (80) and the dust collecting box (90) provided in the cleaning unit (100) will be described with reference to FIGS. This will be described with reference to FIG.

  The dust removing means (50) is for removing dust trapped by the air filter (30). As shown in FIG. 10 and FIG. 11, the dust removing means (50) collects the removed dust as a rotating brush (51) and a cleaning brush (52), which are brush members, and a brush driving means (53). And a dust container (60) for storing the dust. As shown in FIG. 10, the rotating brush (51) and the cleaning brush (52) are provided in the brush opening (63) of the dust container (60).

  The rotating brush (51) includes an elongated cylindrical shaft (51a) and a brush (51b) provided on the outer peripheral surface of the shaft (51a). This brush (51b) is comprised by several hair transplantation. The brush (51b) is provided on a part of the outer surface of the shaft (51a) along the axial direction of the shaft (51a).

  The cleaning brush (52) is disposed on one side of the rotating brush (51) so as to be in contact with the rotating brush (51). The cleaning brush (52) includes a main body portion (52a), a brush (52b), and a spring portion (52c). The main body (52a) is a plate-like member and is formed to have the same length corresponding to the shaft (51a) of the rotating brush (51). The main body (52a) is arranged to face the outer peripheral surface of the rotating brush (51) at a predetermined interval. The upper part of the main body (52a) is formed in an arc shape along the outer peripheral surface of the shaft (51a) of the rotating brush (51). A brush (52b) is provided on the arcuate upper portion of the main body (52a) over the length direction of the main body (52a). The spring portion (52c) is configured by a leaf spring, and one end portion thereof is connected to the lower end of the main body portion (52a), while the other end portion thereof is the dust container (60). Connected to the inner wall. That is, the lower end portion of the main body portion (52a) is supported by the spring portion (52c).

  The rotary brush (51) and the cleaning brush (52) are each formed to have a length equal to or greater than the radius of the circular air filter (30), and the center of the circle of the air filter (30) It is arrange | positioned so that it may extend radially outward from. That is, as shown in FIG. 4, the dust removing means (50) is arranged to extend in the radial direction of the air filter (30).

  The rotating brush (51) is configured to remove dust from the mesh member (37) when the brush (51b) contacts the mesh member (37) of the rotating air filter (30). Further, as shown in FIGS. 10 and 11, the rotating brush (51) is reversibly rotated by the brush driving means (53). As shown in FIGS. 8 and 9, the brush drive means (53) includes a brush drive motor (54), a drive gear (55) and a driven gear (56) that mesh with each other. The drive gear (55) is provided on the drive shaft of the brush drive motor (54), and the driven gear (56) is provided on the end of the shaft (51a) of the rotating brush (51). With this configuration, the rotation of the brush drive motor (54) is transmitted to the rotary brush (51) via the drive gear (55) and the driven gear (56), and the rotary brush (51) is rotationally driven.

  With the above configuration, when the rotating brush (51) is rotated by the brush driving means (53), the brush (52b) of the cleaning brush (52) is in contact with the brush (51b) of the rotating brush (51), The cleaning brush (52) removes dust from the brush (51b) of the rotating brush (51). That is, the cleaning brush (52) is for removing dust from the rotating brush (51) and cleaning the rotating brush (51), and the brush driving means (53) The rotating brush (51) is rotated so that dust captured by the brush (51b) of 51) is rubbed against the cleaning brush (52).

  The brushes (51b, 52b) of the rotating brush (51) and the cleaning brush (52) are made of a so-called pile fabric. This pile fabric is a hair fiber in which hair (pile yarn) is woven into a base fabric, and has a relatively short hair. Moreover, this pile fabric is an inclined pile whose fur is inclined in a certain direction.

  Specifically, the bristles of the brush (51b) in the rotating brush (51) are inclined from the shaft (51a) toward the left side in FIG. That is, the bristles of the brush (51b) are inclined so as to face the rotation direction of the air filter (30). Thus, when the air filter (30) rotates so as to face the bristles of the brush (51b), the dust trapped on the mesh member (37) is efficiently scraped out.

  Further, the bristles of the brush (52b) in the cleaning brush (52) are inclined obliquely downward from the main body (52a) in FIG. That is, the bristles of the brush (52b) are inclined so as to face the rotation direction when the rotating brush (51) rotates clockwise in FIG. Accordingly, the rotating brush (51) is attached to the brush (51b) of the rotating brush (51) by rotating so as to face the hair of the brush (52b) of the cleaning brush (52). Dust can be removed with the brush (52b) of the cleaning brush (52).

  The dust removing operation of the rotating brush (51) and the cleaning brush (52) will be described in detail later.

  The dust container (60) is for collecting and temporarily storing dust removed from the rotating brush (51) by the cleaning brush (52). The dust container (60) has a columnar shape in which the upper part bulges to the right with respect to the lower part in a side view (when viewed from the right side in FIG. 8) and is bent in a slightly inverted shape. Container. In the dust container (60), the upper part is a removing part (61) on which a rotating brush (51) for removing dust from the air filter (30) is disposed, and the lower part is the rotating brush. It is a storage part (62) for storing the dust removed from the air filter (30) by (51).

  Specifically, a brush opening (63) is formed on the upper surface of the removal portion (61) so as to extend in the longitudinal direction, and dust is removed in the brush opening (63) as described above. A rotating brush (51) and a cleaning brush (52) of the means (50) are provided.

  Further, the filter attaching portion (68) described above is provided on one side surface of the removing portion (61). The filter mounting portion (68) is formed to project in a substantially U shape in plan view so as to open in the bulging direction of the removing portion (61) that bulges laterally from the storage portion (62). Is. Further, as shown in FIG. 6, the filter mounting portion (68) has a substantially U-shaped inner width dimension set screw (28a) screwed into the filter rotation shaft (28) of the partition plate (25). ) Is larger than the diameter of the threaded portion and smaller than the diameter of the filter rotation shaft (28).

  Accordingly, as shown in FIG. 6, the set screw is inserted in a state where the air filter (30) is sandwiched between the filter mounting portion (68) and the radial beam portion (27) of the partition plate (25). The air filter (30) can be fixed to the filter mounting portion (68) and the partition plate (25) by screwing (28a) to the filter rotating shaft (28). When removing the air filter (30), the set screw (28a) is loosened, and the dust container (60) having the filter mounting portion (68) formed thereon is expanded. The air filter (28a) is screwed onto the filter rotating shaft (28) by rotating it in the direction opposite to the exit direction (opposite to the opening direction of the filter mounting portion (68)). 30) Only the filter mounting portion (68) which is the lower presser can be moved from below the shaft insertion portion (33) of the air filter (30). As described above, the shaft insertion portion (33) of the air filter (30) has an inner diameter larger than that of the filter rotation shaft (28) and set screw (28a) of the partition plate (25). Therefore, the air filter (30) can be removed from below.

  With the air filter (30) mounting structure as described above, the air filter (30) can be easily removed without removing the set screw (28a).

  The storage part (62) bulges in a circular arc shape at the lower end side (bottom side) in a sectional view. And the dust removed from the rotating brush (51) by the cleaning brush (52) falls and is stored in the arc portion of the storing portion (62). Moreover, the said storage part (62) is formed in the cylinder shape, and the both ends (66,67) of the longitudinal direction are opening. A damper box (81) of a dust transfer means (80) described later is connected to the first end (66) of the storage section (62), and a dust transfer means described later is connected to the second end (67). The (80) transfer duct (88) is connected.

  Further, as shown in FIG. 10, the dust storage container (60) is provided with a storage amount detecting means (70) for detecting the amount of dust stored in the storage portion (62). The storage amount detection means (70) includes a light emitting LED (72) and a phototransistor (73) housed in a sensor box (71). The sensor box (71) is provided near the second end (67) of the storage part (62) of the dust storage container (60) so as to extend in the transverse direction of the storage part (62) and cover the bottom thereof. (See FIGS. 5, 8, and 9). The light emitting LED (72) and the phototransistor (73) are disposed in the sensor box (71) so as to face each other with the reservoir (62) sandwiched in the transverse direction. On the other hand, a first transparent window (64) and a second transparent window (65) are provided on the wall surface of the storage part (62) corresponding to the light emitting LED (72) and the phototransistor (73), respectively. Yes.

  With the above configuration, in the storage amount detection means (70), the light generated by the light emitting LED (72) sequentially passes through the first transparent window (64) and the second transparent window (65), and then the phototransistor ( 73) the light intensity is detected. Depending on the light intensity detected by the phototransistor (73), the amount of dust stored in the storage part (62) (that is, the degree of filling) can be detected. That is, when the amount of stored dust is small, the transmittance of light from the first transparent window (64) to the second transparent window (65) in the storage part (62) increases and is detected by the phototransistor (73). The intensity of light is increased. Conversely, if the amount of stored dust is large, the transmittance of light from the first transparent window (64) to the second transparent window (65) in the storage part (62) is lowered, and the phototransistor (73) The detected light intensity becomes low. Therefore, according to this storage amount detection means (70), for example, when the light intensity becomes a predetermined value or less, it can be determined that the storage amount of the storage unit (62) is large. As a result, even after a dust transport operation for transporting dust in the storage section (62) by a dust transport means (80) described later, the dust in the storage section (62) is stored by the storage amount detection means (70). When it is detected that there is a large amount of storage, it is possible to determine that the dust collection box (90), which is the dust transfer destination, is full.

  Further, as described above, by providing the storage detection means (70) near the second end (67) of the storage section (62) connected to the transport duct (88), dust can be transported. Even when the second end (67) is clogged with dust when transported through the duct (88) and collected in the dust collection box (90), the state can be detected. . That is, in the configuration as in the present embodiment, dust is most likely to be clogged around the second end portion (67) of the storage portion (62), which is a connection portion with the transfer duct (88). By providing the detection means (70) for storage, it becomes possible to more reliably detect dust clogging.

  For example, as shown in FIGS. 4, 5, 8, 12, and 13, the dust transfer means (80) includes the above-described damper box (81), transfer duct (88), introduction duct ( 86) and a suction duct (87).

  The damper box (81) is formed in a rectangular parallelepiped shape, and one end side in the longitudinal direction thereof is connected to the first end (66) of the reservoir (62). As shown in FIGS. 12 and 13, the damper box (81) is provided with a damper (82) as an opening / closing member. When the damper (82) is closed, the internal space of the damper box (81) is partitioned in the longitudinal direction. That is, the internal space of the damper box (81) is divided into a first chamber (81a) on the other end side and a second chamber (81b) on the dust container (60) side on one end side by the damper (82). Partitioned. As described above, the first end (66) of the reservoir (62) is connected to the second chamber (81b) that is defined on one end of the damper box (81). The two chambers (81b) communicate with the storage part (62).

  As shown in FIGS. 9 and 13, the dust transfer means (80) includes a damper drive motor (83), a drive gear (84), and a driven gear (85) for opening and closing the damper (82). ing. The drive gear (84) is connected to the drive shaft of the damper drive motor (83), and the driven gear (85) is connected to the rotating shaft of the damper (82). The drive gear (84) and the driven gear (85) are arranged so as to mesh with each other. With this configuration, the rotation of the damper drive motor (83) is transmitted to the rotating shaft of the damper (82) via the gears (84, 85). As a result, an opening / closing operation is performed in which the damper (82) rotates about the rotation axis by the rotation of the damper drive motor (83).

  One end of the introduction duct (86) is connected to the upper surface of the damper box (81) and communicates with the first chamber (81a) in the dust box (81). On the other hand, the other end side of the introduction duct (86) extends vertically upward from the damper box (81) and is provided between the cleaning unit (100) and the main unit (10) as shown in FIG. The partition plate (25) is passed through and connected to the extending portion of the drain pan (23) of the main unit (10). The introduction duct (86) includes an upstream duct (86a) and a downstream duct (86b) having a circular cross section, and these two members (83a, 83b) are set screws (86c). Are connected in the vertical direction.

  The upstream duct (86a) is formed so that its cross-sectional area (flow path area) is larger than the cross-sectional area (flow path area) of the downstream duct (86b). The lower end (lower side in FIG. 12) of the downstream duct (86b) is connected to the upper surface of the damper box (81), while the upper end (upper side in FIG. 12) of the upstream duct (86a) is the drain pan. It is in contact with the horizontally extending extension part (23) via a seal member (86e). In the extended portion of the drain pan (23), an introduction port (86d) which is a through hole is formed. The upstream duct (86a) communicates with the space on the indoor fan (21) side through the introduction port (86d). That is, the introduction duct (86) is configured to introduce the air blown from the indoor fan (21) into the damper box (81).

  In addition, in the introduction duct (86), the connecting portion between the upstream duct (86a) and the downstream duct (86b) is located in the penetrating portion of the partition plate (25). Specifically, both the ducts (86a, 86b) are connected so that the through hole periphery of the partition plate (25) is sandwiched between the bottom plate of the upstream duct (86a) and the upper end flange of the downstream duct (86b). Yes. With this configuration, the upper end of the introduction duct (86) can be connected to the bell mouth (24) while sandwiching the periphery of the through hole of the partition plate (25) so that the introduction duct (86) does not fall off. It becomes possible.

  Further, as described above, the upstream side of the partition plate (25) is sandwiched between the bottom plate of the upstream side duct (86a) and the upper end flange of the downstream side duct (86b). The connecting portion between the duct (86a) and the downstream duct (86b) can be rotated with respect to the partition plate (25). Moreover, in the present embodiment, the contact portion between the upstream duct (86a) and the seal member (86e) is also configured to be rotatable, so that the introduction duct (86) and the damper box (81) The dust removing means (50) can rotate integrally around the axis (introduction port) of the introduction duct (86).

  For example, as shown in FIGS. 13 and 14, the suction duct (87) has one end on the inflow side connected to the lower surface on one end side of the damper box (81), and the inside of the damper box (81). To the second chamber (81b). On the other hand, the other end on the outflow side of the suction duct (87) is connected to the nozzle insertion portion (110) formed on the decorative panel (11).

  Specifically, as shown in FIG. 14, the suction duct (87) includes a connection pipe (87a) rotatably provided on the lower surface of the damper box (81), and the connection pipe (87a). And a flexible duct (87b) connecting the nozzle insertion portion (110) of the decorative panel (11). In this way, the connecting pipe (87a) connected to the damper box (81) is configured to be rotatable, and the connecting duct (87a) and the nozzle insertion portion (110) can be deformed to be a flexible duct (87b). 14), even when the orientation of the slit portion (12a) of the suction grille (12) changes in the bottom view when installed, the damper box (81) and the nozzle are inserted as shown in FIG. The part (110) can be securely connected. Therefore, the direction of the slit portion (12a) of the suction grill (12) can be freely changed according to the user's preference.

  2 to 4, one end of the transfer duct (88) is connected to the second end (67) of the storage portion (62) in the dust storage container (60), and the other end will be described later. Connected to the dust collection box (90). The dust storage container (60) and the dust collection box (90) can be communicated with each other by the transfer duct (88), and the dust can be transferred in the transfer duct (88). The transfer duct (88) is formed of a flexible tube.

  In the dust transfer means (80) having the above-described configuration, the damper (82) of the damper box (81) is closed during normal operation in which air conditioning is performed (see FIG. 13A). Thereby, the air blown from the indoor fan (21) is not introduced into the second chamber (81b) of the damper box (81). On the other hand, when the dust in the dust container (60) is transferred to the dust collection box (90), the damper (82) of the damper box (81) is opened (see FIG. 13B). Thereby, the air blown from the indoor fan (21) is introduced into the dust container (60) through the introduction duct (86) and the damper box (81). As a result, the dust in the dust container (60) flows along with the introduced air through the transfer duct (88) and is transferred into the dust collection box (90). In other words, as described above, by opening the damper (82) in the damper box (81), the dust in the dust container (60) is removed using the air blown from the indoor fan (21). (60) The sheet can be discharged from the inside and conveyed to a predetermined position.

  Furthermore, in the dust transfer means (80), even when the dust collected in the dust collection box (90) is discharged out of the casing (10), the damper (82) of the damper box (81) It is closed (see FIG. 13C). In this case, the dust in the dust collection box (90) is sucked from the nozzle insertion portion (110) by a vacuum cleaner, so that the dust in the transport duct (88), the damper box (81), and the suction duct (87 ) Through the vacuum cleaner.

  As described above, the dust collection box (90) is configured to transport and store the dust in the dust storage container (60). For example, as shown in FIGS. 3 and 4, the dust collection box (90) is formed in a slightly elongated and substantially rectangular parallelepiped shape, and is disposed below the partition plate (25) like the dust container (60). ing. The dust collection box (90) is disposed on the side of the air filter (30) and along one end of the partition plate (25) so as not to overlap the air filter (30) in plan view. Has been. In the present embodiment, the dust collection box (90) is opposed to the damper box (81) with the air filter (30) interposed therebetween, and the electrical component box ( 20) and the service lid (106) (see FIGS. 18 to 20). The dust collection box (90) has a side plate on the air filter (30) side that corresponds to the outer periphery of the air filter (30) in order to prevent interference with the air filter (30). Thus, it is formed in an arc shape.

  In addition, the dust collection box (90) has an inlet (94) formed on the side surface of one end thereof, and the other end of the transfer duct (88) is connected to the inlet (94). ing. On the other hand, the other end of the dust collection box (90) passes through the chamber casing (101) of the cleaning unit (100), and an exhaust opening to the outside of the casing (101) is formed on the end surface. A mouth (91) is provided. That is, the dust collection box (90) is provided with an exhaust port (91) at the end opposite to the side to which the transfer duct (88) is connected, and the inside of the dust collection box (90) has air in the longitudinal direction. It is easy to flow. The dust collection box (90) has a smaller cross-sectional area at the exhaust port (91) side than at the other parts. Here, in FIG. 4, reference numeral 93 denotes a seal member that seals a portion of the dust collection box (90) that passes through the chamber casing (101) from the inside of the casing.

  In the dust collection box (90), a filter (92) is provided near the exhaust port (91). By providing this filter (92), when dust is transported from the dust container (60) into the dust collection box (90), air is exhausted from the exhaust port (91), while the transported dust is Is captured by the filter (92) and does not flow out of the exhaust port (91). In addition, when dust is discharged from the dust collection box (90) by suction by a vacuum cleaner, the room air flows into the dust collection box (90) through the exhaust port (91). Dust in the air is captured by the filter (92).

  As described above, since the pressure balance in the dust collection box (90) becomes appropriate by the supply and exhaust of air through the exhaust port (91), the dust transport operation and the discharge operation to the dust collection box (90) are appropriate. To be done.

  The electrical component box (105) accommodates electronic parts and the like for driving and controlling the filter driving means (40), the dust removing means (50), the dust conveying means (80), etc. in the cleaning unit (100). In addition, the internal electrical components are electrically connected to the electrical components in the electrical component box (20) of the main unit (10) by wiring (120) so that signals can be exchanged.

  Further, as shown in FIG. 3, the electrical component box (105) has a side adjacent to the side where the dust collection box (90) is disposed below the partition plate (25) of the cleaning unit (100). And it arrange | positions in the position which opposes the damper box (81) connected to the said dust storage container (60) on both sides of an air filter (30). Thus, as will be described in detail later, when removing the service lid (106) and the air filter (30) provided on the partition plate (25) of the cleaning unit (100) during maintenance, the dust container (60) It is possible to reliably prevent the electrical component box (105) from interfering with the dust container (60) even if it is rotated.

  The electrical component box (105) in which electronic components and the like are stored constitutes the drive control unit of the present invention, and the filter drive means (40) is driven and controlled by the electronic components and the like in the electrical component box (105). Each component in the cleaning unit (100) such as the dust removing means (50) and the dust conveying means (80) constitutes the dust removing mechanism of the present invention.

<Wiring layout structure>
Next, the arrangement structure of the wiring (120), which is a feature of the present invention, will be described. That is, the arrangement of the wiring (120) extending from the electrical component box (105) of the cleaning unit (100) to the electrical component box (20) of the main unit (10) will be described below.

  Specifically, the wiring (120) connected to the electrical component box (105) is configured so that the space in the casing (18, 101) on the upstream side of the indoor heat exchanger (22) is separated from the upstream side and the downstream side of the air filter (30). It arrange | positions above the partition plate (25) divided into. That is, as shown in FIG. 17, a substantially square cylindrical holding portion (25b) that protrudes upward and has a space inside is integrally formed on the downstream side of the air filter of the partition plate (25). The wiring (120) is housed inside. Thereby, the said wiring (120) can be arrange | positioned in the space (the downstream side of an air filter) with few dusts, and it can prevent that dust adheres to this wiring (120). In addition, since the wiring (120) can be reliably held by the holding portion (25b), it is possible to reliably prevent the wiring (120) from moving and coming into contact with or disconnecting from other parts. .

  Further, an opening (25c) extending in the cylinder axis direction is provided at a lower portion of the holding portion (25b) formed in a substantially rectangular tube shape. The opening (25c) is formed to have an opening width that is approximately the same as the diameter of the wiring (120) so that the wiring (120) can pass therethrough. 25b) It is possible to fit the wiring (120) inside. Thereby, the said wiring (120) can be easily engage | inserted in a holding | maintenance part (25b), and the installation operation | work of this wiring (120) becomes easy.

  As shown in FIG. 17, the holding portion (25b) is located above the service lid (106) (lid member) covering the service hole (25a) (opening) formed in the partition plate (25) ( It is preferably provided on the downstream side of the air filter. Thus, if the service lid (106) is removed, the wiring (120) can be maintained, and maintenance workability can be improved.

  In the present embodiment, the wiring (120) connecting the electrical component box (105) of the cleaning unit (100) and the electrical component box (20) of the main unit (10) is connected to the downstream side of the air filter of the partition plate (25). The other wiring connected to the electrical component box (105) arranged on the upstream side of the air filter of the partition plate (25) is arranged on the downstream side of the air filter of the partition plate (25). It may be arranged.

<Maintenance structure>
In the following, when the electric component box (20) of the main unit (10) is maintained, the electric component box (20) is accessed with the cleaning unit (100) attached to the main unit (10). The structure for this is demonstrated.

  Specifically, as shown in FIGS. 18 to 20, the cleaning unit (100) is configured such that the air filter (30) and the service lid (106) can be removed, and the service lid (106) is removed. If removed, the service lid (106) and the electrical component box (20) are provided at a position where the electrical component box (20) of the main unit (10) can be accessed.

  More specifically, the dust container (60) and the damper box (81) are configured to be rotatable about the axis of the introduction duct (86) connected to the damper box (81) as described above. Thus, when removing the air filter (30), the dust container (60) and the damper box (81) can be moved to the side of the air filter (30) (see FIG. 19).

  When the dust container (60) and the damper box (81) are rotated, the transfer duct (88) connecting the dust container (60) and the dust collection box (90). Alternatively, it is necessary to remove the suction duct (87) (flexible duct (87b)) that connects the damper box (81) and the nozzle insertion portion (110) of the decorative panel (11). Therefore, the connection part (107,108) of the dust storage container (60) and the dust collection box (90) of the transport duct (88) and the damper box of the flexible duct (87b) ( 81) (The connecting part (109) with the connecting pipe (87a) has a removable structure.

  The dust collection box (90) in the cleaning unit (100) is configured to be detachable from the cleaning unit (100). By removing the dust collection box (90), the dust collection box (90) The service lid (106) provided above the dust collection box (90) is exposed. The service lid (106) is also detachable. As shown in FIG. 20, if the air filter (30) and the service lid (106) are removed in this order, the electrical component box ( 20) is exposed, and maintenance work of the electrical component box (20) becomes possible. Furthermore, since the wiring (120) connected to the electrical component box (105) of the cleaning unit (100) is exposed by removing the service lid (106) as described above, maintenance work for the wiring (120) is also performed. Can do.

-Driving action-
Next, the operation of the indoor unit (3) will be described with reference to FIGS. The indoor unit (3) is configured to be switchable between a normal operation for air conditioning and a filter cleaning operation for cleaning the air filter (30).

<Normal operation>
In normal operation, the rotating brush (51) is rotated and the brush (51b) is positioned on the cleaning brush (52) side. That is, the rotating brush (51) is rotated to a position where the brush (51b) of the rotating brush (51) does not contact the air filter (30), and the non-brush surface (that is, the brush) of the rotating brush (51) is rotated. The outer peripheral surface of the shaft (51a) not provided with (51b) is made to face the air filter (30). Further, the damper (82) of the damper box (81) is closed (the state shown in FIG. 13A). The air filter (30) is in a stopped state where it is not rotating.

  In this state, the indoor fan (21) is driven. Then, in the indoor unit (3), the indoor air sucked from the suction port (13) passes through the air filter (30) and flows into the bell mouth (24). When air passes through the air filter (30), dust in the air is captured by the mesh member (37) of the air filter (30). The air flowing into the bell mouth (24) is blown out from the indoor fan (21). The blown air is cooled or heated by exchanging heat with the refrigerant in the indoor heat exchanger (22), and then supplied into the room from each outlet (14). Thereby, indoor cooling or heating is performed. In this operation, since the damper (82) of the damper box (81) is closed, the air blown from the indoor fan (21) is not introduced into the dust container (60) through the damper box (81).

  Thus, in normal operation, the brush (51b) of the rotating brush (51) and the air filter (30) are in a non-contact state. That is, the brush (51b) is separated from the air filter (30). Therefore, deterioration due to the brush (51b) kept in contact with the air filter (30) can be prevented, whereby the durability of the rotating brush (51) is improved.

<Filter cleaning operation>
In the filter cleaning operation, the compressor (4) is stopped in the refrigerant circuit shown in FIG. 1, and the refrigerant does not circulate. In this filter cleaning operation, “dust removal operation”, “brush cleaning operation”, “dust transport operation”, and “dust discharge operation” are switchable. The LED (16) provided on the decorative panel (11) is lit during the “dust removal operation”, “brush cleaning operation”, and “dust transfer operation”. Thereby, it is possible to notify the user that these operations are being performed.

  The “dust removal operation” is an operation for removing dust trapped by the air filter (30). The “brush cleaning operation” is an operation for removing dust trapped on the rotating brush (51). The “dust transfer operation” is an operation of transferring dust from the dust container (60) to the dust collection box (90). The “dust discharge operation” is an operation for discharging dust from the dust collection box (90) to the outside of the indoor unit (3).

  In the present embodiment, “dust removal operation” and “brush cleaning operation” are performed alternately. First, in the “dust removal operation”, the indoor fan (21) is stopped. Then, the brush (51b) of the rotating brush (51) is brought into contact with the air filter (30). In this state, the air filter (30) rotates and moves so that the bristles of the brush (51b) of the rotating brush (51) are turned upside down (in the direction of the white arrow in FIG. 11A). At this time, the rotating brush (51) remains stopped.

  Then, dust on the air filter (30) is captured by the brush (51b) of the rotating brush (51) (FIG. 11A). When the lever (44a) of the limit switch (44) of the filter driving means (40) is operated, the filter driving motor (41) is stopped and the rotation of the air filter (30) is stopped. That is, the air filter (30) rotates by a predetermined angle and stops. Therefore, the dust in the area | region which contacted the brush (51b) of the rotating brush (51) in an air filter (30) is removed. Here, since the brush (51b) is implanted so as to be inclined with respect to the rotation direction (movement direction) of the air filter (30), the dust on the air filter (30) is brushed (51b) Is easily scraped off. Therefore, the dust removal efficiency by the rotating brush (51) can be improved. As described above, when the rotation of the air filter (30) stops, the “dust removal operation” is switched to the “brush cleaning operation”.

  In the “brush cleaning operation”, the rotating brush (51) first rotates counterclockwise (counterclockwise) in FIG. 11 with the indoor fan (21) stopped. At that time, the rotating brush (51) rotates so that the brush portions (51b, 52b) come into contact with the cleaning brush (52) while dust is captured by the brush (51b) (FIG. 11 ( B)). The rotating brush (51) stops after rotating by a predetermined rotation angle.

  Thereafter, the rotating brush (51) rotates counterclockwise (clockwise in FIG. 11 (clockwise) in FIG. 11). Then, the dust trapped on the brush (51b) of the rotating brush (51) is removed by the brush (52b) of the cleaning brush (52) (FIG. 11C). This is because the bristles of the brush (52b) of the cleaning brush (52) are planted so as to be inclined downward, that is, so as to stand upside down by the clockwise rotation of the rotating brush (51). This is because the dust adhering to the brush (51b) of the rotating brush (51) is scraped off.

  Further, when the brush portions (51b, 52b) of the rotating brush (51) and the cleaning brush (52) come into contact with each other, the main body portion (52a) of the cleaning brush (52) becomes the rotating brush (51). The main body (52a) is urged toward the rotating brush (51) by the spring (52c), so the brushes (51b, 52b) are not separated from each other. The cleaning brush (52) is appropriately pressed against the rotating brush (51). Therefore, dust can be more reliably removed from the brush (51b) of the rotating brush (51), and the dust can be captured by the brush (52b) of the cleaning brush (52). The rotating brush (51) rotates to the original state (the state shown in FIG. 11A) and stops.

  Subsequently, the rotating brush (51) rotates counterclockwise (counterclockwise) again by a predetermined rotation angle. Then, the dust trapped on the brush (52b) of the cleaning brush (52) is scraped off by the brush (51b) of the rotating brush (51) and falls to the storage part (62) of the dust storage container (60). (FIG. 11D). That is, since the bristles of the brush (51b) of the rotating brush (51) are inclined so as to follow the rotation direction, dust can be scraped off from the brush (52b) of the cleaning brush (52). Even in this case, the cleaning brush (52) is appropriately pressed against the rotating brush (51) by the spring portion (52c), so that dust can be more reliably removed from the cleaning brush (52). .

  Thus, the dust trapped on the rotating brush (51) is removed and stored in the storage part (62) of the dust storage container (60). Thereafter, the rotating brush (51) rotates again clockwise (clockwise) again to return to the original state (FIG. 11A), and the “brush cleaning operation” is temporarily ended.

  When the “brush cleaning operation” as described above is completed, the “dust removal operation” described above is performed again. That is, when the air filter (30) is rotated again and the lever (44a) of the limit switch (44) is actuated again, the air filter (30) is stopped. Thereby, the dust of the area | region which passed the brush (51b) of the rotating brush (51) in an air filter (30) is capture | acquired by the brush (51b) of a rotating brush (51) (FIG. 11 (A)). As described above, the “dust removal operation” and the “brush cleaning operation” are alternately repeated, whereby the dust is removed for each predetermined region of the air filter (30). When the dust is removed in the entire area of the air filter (30), the “dust removal operation” and the “brush cleaning operation” are completely completed. For example, when the lever (44a) of the limit switch (44) is actuated a predetermined number of times, it is determined that the air filter (30) has made one revolution, and the above operation ends.

  By the way, during the above-described “dust removal operation” and “brush cleaning operation”, the storage amount detection means (70) detects the dust storage amount in the dust storage container (60). That is, the light intensity of the light emitted from the light emitting LED (72) is detected by the phototransistor (73). Then, when the detected light intensity of the phototransistor (73) becomes equal to or less than the set value (lower limit value), the amount of dust in the dust container (60) has reached a predetermined amount, and the operation is switched to “dust transfer operation”.

  In the “dust transfer operation”, the rotary brush (51) is stopped in the state of FIG. 11 (A) and the air filter (30) is stopped. Further, the damper (82) of the damper box (81) is in the open state (the state shown in FIG. 13B). In this state, when the indoor fan (21) is driven, the air blown from the indoor fan (21) is introduced into the dust container (60) through the introduction duct (86) and the damper box (81). Is done. As a result, the dust in the dust container (60) is transferred into the dust collection box (90) through the transfer duct (88) together with the air. Then, the amount of dust stored in the dust storage container (60) is reduced, and the light intensity detected by the phototransistor (73) is increased. When the detected luminous intensity becomes equal to or greater than the set value (upper limit value), the “dust transporting operation” is terminated, assuming that most of the dust in the dust container (60) has been discharged. Thereafter, the “dust removal operation” or “brush cleaning operation” is resumed.

  In the filter cleaning operation of the present embodiment, a “dust discharge operation” is performed according to a predetermined condition. That is, after the damper (82) is opened in the “dust transfer operation”, the light emitting LED (72) is turned on to detect the light intensity. If the light intensity is lower than a predetermined value, the dust storage container (60) The dust inside is not transported by the air blown from the indoor fan (21), that is, the dust is clogged in the transport path from the dust storage container (60) to the dust collection box (90), or the dust collection Judging that a large amount of dust is collected in the box (90), the LED (16) of the decorative panel (11) is turned on to notify the user, and according to remote control operation, etc. “Dust discharging operation” is performed. The operation of detecting the luminous intensity of the light emitting LED (72) in conjunction with the movement of the damper (82) (hereinafter also referred to as a full / clogging detection operation) is, for example, once a week. Performed regularly.

  In the “dust discharging operation”, the rotary brush (51) is stopped in the state shown in FIG. 11A and the air filter (30) is stopped as in the “dust transporting operation” described above. Further, the damper (82) of the damper box (81) is in the closed state (the state shown in FIG. 13C).

  In the state described above, the suction operation is performed in a state where the nozzle of the vacuum cleaner is inserted into the nozzle insertion portion (110) of the decorative panel (11) by the user. By this suction operation, the dust in the dust collection box (90) is moved into the transport duct (88), the dust container (60), the damper box (81), the suction duct (87) and the nozzle insertion part (110). Is sucked into the vacuum cleaner. At that time, the dust remaining in the dust container (60) is also sucked into the cleaner through the suction duct (87). As a result, the dust in the dust collection box (90) and the dust container (60) is discharged out of the indoor unit (3).

  The full / clogging detection operation described above is performed once the light intensity is determined to be smaller than the predetermined value, so that the “dust removal operation” eliminates the clogging of the dust and the dust collection box (90 ) Is periodically performed at predetermined intervals until the amount of dust in the light-emitting LED (72) becomes equal to or higher than a predetermined value, and when the light intensity becomes equal to or higher than the predetermined value, Turn off the LED (16) of the decorative panel (11). Thereafter, a normal full / clogging detection operation is performed once a week, for example.

-Effect of the embodiment-
As described above, in this embodiment, the upper side of the partition plate (25) that partitions the upstream space of the indoor heat exchanger (22) in the casing (18, 101) into the upstream side and the downstream side of the air filter (30) ( On the downstream side of the air filter with respect to the partition plate (25), there are electronic parts for performing drive control such as dust removing means (50) and dust conveying means (80) for removing dust from the air filter (30). Since the wiring (120) connected to the housed electrical component box (105) is disposed, it is possible to prevent dust from adhering to the wiring (120) as much as possible. Therefore, with the above-described configuration, when the user looks inside the casing (18, 101) during maintenance or the like, the user sees the state where dust adheres to the wiring (120) in the casing (18, 101). To prevent discomfort.

  Further, the wiring (120) is arranged above the service lid (106) covering the service hole (25a) of the partition plate (25) (on the downstream side of the air filter of the service hole (25a)). 120) can be easily maintained.

  Further, the partition plate (25) is provided with a holding portion (25b) for holding the wiring (120), and the holding portion (25b) is formed in a rectangular tube shape surrounding the wiring (120). The wiring (120) can be securely held. Furthermore, by providing the opening (25c) at the lower part of the holding part (25b), the wiring (120) can be easily fitted into the holding part (25b) from the opening (25c), Installation work of wiring (120) becomes easy.

<< Other Embodiments >>
The above embodiment may be configured as follows.

  In the above embodiment, the dust removed from the air filter (30) is collected in the dust collection box (90). However, the present invention is not limited to this. Any configuration such as a bag shape may be used.

  Moreover, in the said embodiment, although the said dust collection box (90) is provided in the cleaning unit (100), you may make it provide separately from an indoor unit (3).

  In the above embodiment, the air blown from the indoor fan (21) is used as means for conveying dust from the dust container (60) to the dust collection box (90). In addition, any configuration may be used as long as dust can be transferred, and a dedicated fan may be provided.

  Moreover, in the said embodiment, although the air filter (30) is formed in circular shape, it is not restricted to this, For example, you may form in rectangular shape. In this case, the air filter (30) and the rotating brush (51) relatively move linearly.

  In the above embodiment, the wiring (120) is disposed above the service lid (106). However, the wiring (120) is not limited to this, and the wiring (120) is disposed anywhere above the partition plate (25) (on the downstream side of the air filter). May be.

  Furthermore, in the above-described embodiment, the holding portion (25b) for holding the wiring (120) has a substantially rectangular tube shape surrounding the wiring (120). However, the present invention is not limited to this, and the wiring (120 ) May be other cylindrical shapes such as a cylindrical shape, and may be other shapes without being limited to a cylindrical shape.

  As described above, the present invention is particularly useful for an indoor unit of an air conditioner in which an air filter is provided on the suction side of an indoor fan.

FIG. 1 is a piping system diagram showing a configuration of an air conditioner including an indoor unit according to an embodiment of the present invention. FIG. 2 is a vertical cross-sectional view showing the configuration inside the indoor unit. FIG. 3 is an exploded perspective view showing a state in which the indoor unit is disassembled into each unit. 4 is a cross-sectional view taken along line IV-IV in FIG. FIG. 5 is a perspective view showing the configuration of the vent holes of the partition plate, the air filter, and the dust container. FIG. 6 is a cross-sectional view showing an air filter mounting structure. FIG. 7 is a perspective view showing the configuration of the filter driving means. FIG. 8 is a perspective view of the dust removing means and the dust container as viewed from above. FIG. 9 is a perspective view of the dust container as viewed from below. 10 is a cross-sectional view taken along line XX in FIG. FIG. 11 is a diagram illustrating the operation of the rotating brush during the dust removal operation and the brush cleaning operation in the cross section taken along the line XI-XI in FIG. FIG. 12 is an enlarged cross-sectional view of the introduction duct. FIG. 13 is a cross-sectional view showing the operation of the damper of the dust transfer means. FIG. 14 is a partial cross-sectional view showing a part of the decorative panel as seen from the indoor side. FIG. 15 is a perspective view schematically showing a connection relationship between the damper box and the nozzle insertion portion. FIG. 16 is a bottom view showing a state in which the dust removing means, the dust collecting box and the like in the cleaning unit are removed. 17 is a cross-sectional view taken along line XVII-XVII in FIG. FIG. 18 is a perspective view showing a state in which the main unit and the cleaning unit are combined. FIG. 19 is a perspective view showing a state where the dust collection box is removed from the cleaning unit. FIG. 20 is a perspective view showing a state where the air filter and the service lid are removed from the cleaning unit.

1 Air conditioner
3 Indoor unit
10 Main unit
18 Body casing (casing)
20 Electrical component box
21 Indoor fan
22 Indoor heat exchanger
25 Partition plate
25a Service hole (opening)
25b Holding part
25c opening
30 Air filter
40 Filter drive means
50 Dust removal means
80 Dust transfer means
100 cleaning unit
101 Chamber casing (casing)
105 Electrical component box (drive control unit)
106 Service lid (lid member)
120 Wiring

Claims (5)

In the casing (18, 101), an indoor heat exchanger (22), an indoor fan (21) that blows out air sucked from the room to the indoor side, and an air filter (30) provided on the suction side of the indoor fan (21) An indoor unit of an air conditioner equipped with
A partition plate (25) provided to partition the casing (18, 101) into an upstream side and a downstream side of the air filter (30);
A dust removal mechanism (40, 50, 80) for removing dust trapped in the air filter (30);
A drive control unit (105) having an electrical component for driving and controlling the dust removal mechanism (40, 50, 80);
Wiring (120) connected to the drive control unit (105),
The wiring (120) is disposed on the downstream side of the air filter with respect to the partition plate (25) ,
On the downstream side of the air filter of the partition plate (25), electrical parts for controlling the operation of the components of the main unit (10) including the indoor heat exchanger (22) and the indoor fan (21) are provided. An electrical component box (20) is provided,
The drive control unit (105) is provided in a cleaning unit (100) that includes the dust removal mechanism (40, 50, 80) and is configured separately from the main body unit (10).
The wiring (120) electrically connects the electrical component of the drive control unit (105) and the electrical component of the electrical component box (20) so that signals can be transmitted and received. An indoor unit of an air conditioner. In claim 1,
The partition plate (25) has an opening (25a) and a lid member (106) that covers the air filter upstream side of the opening (25a).
The indoor unit of an air conditioner, wherein the wiring (120) is arranged on the downstream side of the air filter of the opening (25a). In claim 1,
The indoor unit of an air conditioner, wherein a holding portion (25b) for holding the wiring (120) is provided on the downstream side of the air filter of the partition plate (25). In claim 3,
The indoor unit of the air conditioner, wherein the holding portion (25b) is formed in a cylindrical shape so as to surround the wiring (120). In claim 4,
An indoor unit of an air conditioner, wherein an opening (25c) through which the wiring (120) can pass is provided on a side surface of the holding part (25b) so as to extend in a cylinder axis direction.

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