JP5292737B2 - Dust collection box and air conditioner equipped with the same - Google Patents

Abstract

A structure for storing dust removed from an air filter in an indoor unit is devised in order to possibly save time and manpower. As viewed from an indoor side (as viewed in plan), a dust collection box (90) is provided such that at least a part of the dust collection box (90) is arranged so as to outwardly protrude from an opening (1a) of a ceiling board (1). The dust collection box (90) is connected to a discharge duct (74). Dust removed from an air filter (40) in a casing body (26) is transferred to the dust collection box (90) through the discharge duct (74) by blow-off air from an indoor fan (39).

Description

  The present invention relates to a dust collection box for storing dust removed from an air filter in an indoor unit of an air conditioner.

  2. Description of the Related Art Conventionally, an indoor unit of an air conditioner having an air filter at an air suction port is provided with dust removal removing means for removing dust trapped by the air filter. In this type of air conditioner, since the storage container for storing the dust removed from the air filter is provided in the indoor unit, when the user throws away the dust in the storage container, the cover (grill of the unit) Etc.), it is necessary to take out the storage container.

On the other hand, as disclosed in Patent Document 1, for example, the storage container is disposed outside the casing of the indoor unit so that only the storage container can be removed, and the dust removed from the air filter by the dust removing means. The structure which conveys the inside of the said storage container by the flow of a wind is considered. In this way, the dust captured by the air filter can be discharged out of the casing, stored in the storage container, and easily removed from the storage container without bothering the user. it can.
JP 2005-83721 A

  However, the above-described air conditioner of Patent Document 1 has a storage container disposed in a surplus space on the indoor side panel that is a part of the casing of the indoor unit. Cannot be made too large.

  Then, even if the dust removed from the air filter in the indoor unit is stored in the storage container, it is necessary to frequently take out the dust stored in the storage container. Therefore, even if the dust removed from the air filter is discharged out of the casing of the indoor unit as described above, it is necessary to take out the dust in the storage container, which is troublesome for the user.

  The present invention has been made in view of such points, and an object of the present invention is to devise a dust storage structure that is removed from the air filter in the indoor unit, so that the user can easily collect the dust. Is to reduce as much as possible.

  In order to achieve the above object, in the dust collection box (90) according to the present invention, as viewed from the indoor side, at least a part of the dust collection box (90) is located outside the opening (1a) of the ceiling plate (1). Provided. As a result, the volume of the dust collection box (90) can be made larger than before, and the frequency of dust collection can be minimized.

Specifically, in the first invention, the casing (26) of the indoor unit (13) of the air conditioner (10) installed in the opening (1a) formed in the ceiling board (1) and the transport passage ( 76) is removed from the air filter (40) located on the suction side of the indoor fan (39) in the casing (26), and is connected to the casing (26 through the transfer passage (76). ) Target dust collection box for collecting dust discharged outside. And it is provided in the ceiling back so that at least one part is located outside the opening (1a) of the said ceiling board (1) seeing from the indoor side, and the front-end | tip of a vacuum cleaner (95) is for the said maintenance inspection. The maintenance inspection hole (27a) and the dust collection so that the dust is collected to the vacuum cleaner (95) by being inserted into the dust collection hole (91a) through the hole (27a). And the corresponding hole (91a) .

  With this configuration, the dust collection box (90) for storing the dust removed from the air filter (40) in the indoor unit (13) has the size and space of the casing (26) of the indoor unit (13). Since the volume is not limited by the space, the volume of the dust collection box (90) can be made sufficiently large to reduce the frequency of collecting the dust in the dust collection box (90) as much as possible.

The dust collection box (90) has either a lower surface or a side surface corresponding to a hole (27a) for maintenance and inspection formed in the indoor side panel (27) of the indoor unit (13). A dust collecting hole (91a) is provided on the surface, and the tip of the vacuum cleaner (95) is inserted into the dust collecting hole (91a) through the maintenance inspection hole (27a). The two holes (27a, 91a) are made to correspond to each other so that dust is collected by the vacuum cleaner (95).

The dust collection hole (91a) is provided with a seal mechanism for sealing between the hole (91a) and the tip of the cleaner (95) (second invention).

The dust collection box (90) is attached to the side of the casing (26) of the indoor unit (13) via a locking means (96) ( third invention). By doing so, the dust collection box (90) can be fixedly attached to the casing (26), so that it is not necessary to perform work on the wall on the back of the ceiling to install the dust collection box (90). Installation work on site can be performed easily.

In particular, the locking means is a magnet (96), and the magnet (96) is preferably disposed on a contact surface with the metal casing (26) ( fourth invention). Accordingly, the dust collection box (90) can be easily attached to the side of the casing (26), and the dust collection box (90) is provided even if the mounting surface of the casing (26) has some unevenness. ) Can be attached securely.

In the configuration as described above, the dust collection box (90) is viewed from the indoor side with respect to the hole (27a) for maintenance and inspection formed in the indoor side panel (27) of the indoor unit (13). It is preferable that the holes (27a) are provided so as not to cover the whole (the fifth invention).

  In this way, by arranging the dust collection box (90) so as not to overlap the entire hole (27a) for maintenance and inspection of the indoor panel (27) when viewed from the indoor side, the hole (27a The dust collection box (90) can be placed closer to the hole (27a) without impairing the function of the maintenance inspection hole (for example, adjusting the suspension height of the casing (26)). become. Thereby, it is possible to achieve both the workability at the time of maintenance and inspection of the indoor unit (11) and the workability of the dust collection box (90) (for example, dust collection).

  The dust collection box (90) has at least one of a lower surface and a side surface corresponding to a hole (27a) for maintenance and inspection formed in the indoor side panel (27) of the indoor unit (13). It is preferable that a hole (91a) for collecting dust is provided on the surface (first invention). Thereby, it is possible to collect dust from the indoor side by a vacuum cleaner or the like without removing the dust collection box (90) from the back of the ceiling. That is, the hole (27a) for maintenance and inspection formed in the indoor side panel (27) of the indoor unit (13), and the lower surface or side surface of the dust collection box (90) corresponding to the hole (27a) The dust can be collected from the dust collection box (90) through the dust collection hole (91a) formed in the container, and the dust collection workability can be improved.

On the other hand, the dust collection box (100) may be suspended and supported by a support member (101) from the ceiling surface of the ceiling back ( sixth invention). By doing so, the dust collection box (100) can be securely attached and fixed to the back of the ceiling.

  In particular, the dust collection box (100) is preferably suspended and supported by a casing support member (111) that suspends and supports the casing (26) from the ceiling surface of the back of the ceiling (sixth invention). Accordingly, in order to suspend and support the dust collection box (100) from behind the ceiling, a support member (111) that supports the casing (26) of the indoor unit (13) is supported without providing a dedicated support member. Since it can be shared, costs and installation work can be reduced accordingly.

Further, an outlet (100c) for taking out dust inside may be provided at the lower part of the side surface of the dust collection box (100) ( eighth invention). By providing the outlet (100c) at the lower part of the side surface, the dust stored in the dust collecting box (100) can be recovered from the outlet (100c), and the recovery workability can be improved.

In the above configuration, it is preferable that the dust collection box (90, 100) is connected to the casing (26) by a flexible duct (74) constituting the transfer passage (76) ( 9th invention).

  Thereby, the casing (26) of the indoor unit (13) and the dust collection box (90, 100) are securely connected by the duct (74). Then, the dust removed by the air filter (40) of the indoor unit (13) is conveyed inside the duct (74) by the air blown from the indoor fan (39), and is stored in the dust collection box (90, 100). It is surely stored. That is, regardless of the positional relationship between the casing (26) of the indoor unit (13) and the dust collection box (90, 100), even when vibration or the like is applied, the indoor unit (13 ) Casing (26) and the dust collection box (90,100) can be maintained by the flexible duct (74). From the casing (26) of the indoor unit (13), the dust collection box (90,100) can be maintained. ) Can be transported reliably.

The dust collection box (90, 100) has a dust intake port (90a, 100a) connected to the transfer passage (76) and the indoor fan (39) used for transferring the dust. And a discharge port (90b, 100b) for discharging the blown air to the outside, and the discharge port (90b, 100b) is located above the intake port (90a, 100a) It shall be ( tenth invention).

  By doing so, the air blown from the indoor fan (39) that conveys dust from the indoor unit (13) to the dust collection box (90, 100) is taken into the intake port (90a, 100a) of the dust collection box (90, 100). ) Together with dust into the box (90, 100) and then discharged to the outside through the discharge ports (90b, 100b). At this time, as described above, by providing the discharge port (90b, 100b) above the intake port (90a, 100a), air and dust flowing in from the intake port (90a, 100a) Only heavy dust remains in the dust collection box (90, 100), and air is discharged to the outside from the discharge ports (90b, 100b) located above the intake ports (90a, 100a). Therefore, according to the above-described configuration, dust can be reliably stored in the dust storage box (90, 100), and dust is collected together with air from the discharge port (90b, 100b) formed in the dust storage box (90, 1001). It is possible to prevent leakage to the outside.

In particular, the discharge port (90b, 100b) is preferably formed on the upper surface of the dust collection box (90, 100) ( 11th invention). In this way, by forming the discharge port (90b, 100b) on the upper surface of the dust collection box (90, 100), it is ensured that dust is discharged from the discharge port (90b, 100b) to the outside along with the air flow. Therefore, dust can be more reliably stored in the dust collection box (90, 100).

Further, the intake port (100a) and the discharge port (100b) may be formed at positions facing each other in a plan view (a twelfth aspect of the invention). As a result, the air blown from the indoor fan (39) that has entered the dust collection box (90,100) from the intake port (90a, 100a) passes through the dust collection box (90,100) and passes through the intake port (90,100). 90a, 100a) are discharged to the outside through discharge ports (90b, 100b) formed at positions facing the planar view. Therefore, with the above-described configuration, the air smoothly flows in the dust collection box (90, 100), so that it is possible to prevent the flow of air that causes the dust to wind up in the dust collection box (90, 100). Thus, dust can be efficiently stored in the dust collection box (90, 100).

The opening area of the discharge port (90b, 100b) is preferably larger than that of the intake port (90a, 100a) ( 13th invention). As a result, air can be easily discharged to the outside from the discharge port (90b, 100b), which is the air outlet, so that the air flowing into the dust collection box (90, 100) from the intake port (90a, 100a) The dust is transported into the dust collection box (90, 100) without being made an air flow that winds up the dust in (90, 100), and then quickly discharged to the outside. Therefore, dust can be more efficiently stored in the dust collection box (90, 100).

Moreover, it is preferable that a mesh member (92) is disposed at the discharge port (90b, 100b) so as to cover the opening ( fourteenth invention). In this way, it is possible to prevent insects and dust from entering the dust collection box (90,100) from the discharge port (90b, 100b), and the indoor unit (13,13) in the dust collection box (90,100). Only the dust removed from the air filter (40) can be stored. Therefore, dust can be more efficiently stored in the dust collection box (90, 100).

In the above configuration, the dust collection box (90, 100) is preferably formed of at least a part of a transparent member (93, 103) so that the amount of stored dust can be confirmed ( 15th invention). . Thereby, the amount of dust stored in the dust collection box (90, 100) can be easily grasped, and the dust in the dust collection box (90, 100) can be collected at an appropriate time. Therefore, the work efficiency at the time of dust collection can be improved.

The sixteenth invention relates to an air conditioner (10) provided with the dust collection box (90, 100) of any one of the first to fifteenth inventions.

Specifically, the sixteenth aspect of the invention includes an indoor heat exchanger (37) in the casing (26), an indoor fan (39) that sucks air from the room and blows it out to the indoor heat exchanger (37), An air conditioner having an indoor unit (13) including an air filter (40) provided on the suction side of the indoor fan (39) is intended.

And dust removing means (50) for removing dust trapped by the air filter (40), and dust conveying means for conveying the dust removed by the dust removing means (50) out of the casing (26) ( 70) and the dust collection box (90, 100) according to any one of claims 1 to 15 , which is located outside the casing (26) and stores the dust transported by the dust transport means (70). It shall be provided.

With this configuration, the dust trapped by the air filter (40) in the indoor unit (13) is removed by the dust removing means (50) and then transported out of the casing (26) by the dust transporting means (70). Thus, it is stored in the dust collection box (90, 100) of any one of the first to fifteenth inventions. As a result, the air conditioner (10) capable of obtaining the effects as in the first to fifteenth inventions is obtained.

The dust collection box (90, 100) is connected to the casing (26) by a flexible duct (74) constituting the dust passage (76), and the flexible duct (74) is connected to the dust collection box ( 90) and detachably connected to at least one of the casing (26) ( 17th invention).

  As a result, the flexible duct (74) can be easily attached to and detached from the dust collection box (90, 100) and the casing (26) when installing and maintaining the dust collection box (90, 100). Improvement of workability can be achieved.

In particular, a claw portion (123b) is provided at an end of the flexible duct (74), and the claw portion (123b) is a protrusion provided on a mating member to which the flexible duct (74) is connected. It is preferable that the part (122a) is detachable ( 18th invention). As a result, when the flexible duct (74) is attached to or detached from the dust collection box (90) or the casing (26), the flexible duct (74) is provided at the end of the claw (123b) and the connection partner. The flexible duct (74) can be easily attached and detached because the protruding portion (122a) thus formed may be engaged or released.

  As described above, according to the present invention, the transfer passage (76) is provided in the casing (26) of the indoor unit (13) of the air conditioner (10) installed in the opening (1a) of the ceiling plate (1). The dust collection box (90) connected through the casing is provided on the back of the ceiling so that at least a part thereof is located outside the opening (1a) when viewed from the indoor side, so that a casing ( The volume of the dust collection box (90) can be made sufficiently large without being limited by the configuration of 26). Therefore, it is possible to increase the amount of dust stored in the dust collection box (90) as much as possible, and to reduce the frequency of dust collection, thereby improving user maintenance.

  According to the first aspect of the invention, the maintenance and inspection hole (27a) formed in the indoor side panel (27) of the indoor unit (13) is formed on the lower surface or side surface of the dust collection box (90). Correspondingly, since the dust collecting hole (91a) is provided, the dust in the dust collecting box (90) can be collected from the indoor side, and the workability at the time of collecting the dust can be improved.

  Further, the tip of the vacuum cleaner (95) is inserted into the dust collection hole (91a) through the maintenance inspection hole (27a) so that the dust is collected to the vacuum cleaner (95). Since the two holes (27a, 91a) correspond to each other, the dust in the dust collection box (90) can be easily collected.

According to the second invention, the dust collecting hole (91a) is provided with a seal mechanism for sealing between the hole (91a) and the tip of the vacuum cleaner (95). Yes.

According to the third invention, since the dust collection box (90) is attached to the side of the casing (26) of the indoor unit (13) via the locking means (96), the dust collection box (90) can be easily installed behind the ceiling, improving workability during installation. In particular, as in the fourth invention, by using a magnet (96) disposed on the contact surface of the dust collection box (90) as the locking means, a small amount is provided on the surface of the casing (26). Even if there is unevenness, the dust collection box (90) can be securely attached to the side of the casing (26).

According to the fifth invention, the dust collection box (90) is moved from the indoor side to the maintenance inspection hole (27a) formed in the indoor side panel (27) of the indoor unit (13). Since the hole (27a) is provided so as not to cover the whole when viewed, the dust collection box is secured while maintaining the function as an inspection hole for maintenance and inspection work of the indoor unit (13) of the hole (27a). (90) can be arranged at a position that is more easily accessible from the hole (27a).

  According to the first aspect of the invention, the maintenance and inspection hole (27a) formed in the indoor side panel (27) of the indoor unit (13) is formed on the lower surface or side surface of the dust collection box (90). Correspondingly, since the dust collecting hole (91a) is provided, the dust in the dust collecting box (90) can be collected from the indoor side, and the workability at the time of collecting the dust can be improved.

According to the sixth aspect of the invention, the dust collection box (100) is suspended and supported by the support member (101) from the ceiling surface of the ceiling, so the dust collection box (100) is placed on the ceiling. It can be installed reliably.

According to the seventh invention, the dust collection box (100) is suspended and supported by the support member (111) common to the casing (26) of the indoor unit (13) suspended from the ceiling surface of the ceiling. Therefore, it is not necessary to separately provide a support member dedicated to the dust collection box, and accordingly, the cost can be reduced and the installation work can be reduced.

According to the eighth aspect of the invention, since the outlet (100c) for taking out the dust is provided at the lower part of the side surface of the dust collecting box (100), the dust collecting box (100) Dust can be taken out efficiently, and dust collection workability can be improved.

According to the ninth aspect of the invention, the dust collection box ( 90 , 100) is connected to the casing (26) of the indoor unit (13) by the flexible duct (74), and dust is contained in the duct (74). Since it is configured to be transported, the dust collection box (90, 100) and the indoor unit (13) are securely connected, and dust is collected from the indoor unit (13) into the dust collection box (90, 100). It can be reliably transported. Moreover, by using the flexible duct (74) as described above, the connection between the dust collection box (90, 100) and the casing (26) of the indoor unit (13) can be secured even when vibration is applied. .

According to the tenth invention, the dust collection box (90, 100) is provided with the dust intake port (90a, 100a) and the air discharge port (90b, 100b), Since the discharge port (90b, 100b) is located above the intake port (90a, 100a), only dust is stored in the dust collection box (90, 100), and the discharge port (90b, 100b) ) Can be reliably prevented from being discharged to the outside together with air.

In particular, as in the eleventh aspect of the invention, by forming the discharge port (90b, 100b) on the upper surface of the dust collection box (90, 100), dust flows out of the discharge port (90b, 100b) together with air. On the other hand, as in the twelfth aspect of the present invention, by providing the intake port (901, 100a) and the discharge port (90b, 100b) at positions facing each other in plan view, the dust collection The flow of air in the box (90, 100) can be made smooth, and dust can be efficiently stored in the dust collection box (90, 100).

According to the thirteenth aspect of the invention, since the discharge port (90b, 100b) has an opening area larger than that of the intake port (90a, 100a), the air smoothly flows in the dust collection box (90, 100). And then discharged from the discharge ports (90b, 100b) to the outside. Therefore, it is possible to prevent a wind flow that winds up dust in the dust collection box (90, 100), and to store dust more efficiently in the dust collection box (90, 100). .

According to the fourteenth aspect of the invention, since the mesh member (92) is provided so as to cover the discharge port (90b, 100b), the dust collection box (90, 100) is provided from the discharge port (90b, 100b). Insects and dust can be prevented from entering the inside, and dust can be more efficiently stored in the dust collection box (90, 100).

Furthermore, according to the fifteenth aspect , since at least a part of the dust collection box (90,100) is formed by the transparent member (93,103), the dust collected in the dust collection box (90,100) The amount can be easily grasped, and dust can be collected from the dust collection box (90, 100) at an appropriate time. Therefore, the work efficiency of the dust collection work can be improved.

According to the air conditioner (10) according to the sixteenth invention, due to the provision of any one of the dust collecting box (90, 100) of the fifteenth invention from the first, the invention from the first 15 The same effect can be obtained.

According to the seventeenth aspect of the invention, the flexible duct (74) constituting the transfer passage (76) is detachably connected to at least one of the dust collection box (90) and the casing (26). The flexible duct (74) can be easily attached and detached, and the workability when the dust collection box (90) is installed or maintained can be improved. In particular, as in the eighteenth aspect of the invention, a claw portion (123b) is provided at the end of the flexible duct (74), and the claw portion (123b) is provided with a protruding portion (122a) provided on a member to be connected. By adopting a detachable configuration, the configuration of the seventeenth aspect of the invention can be realized, and the same effect as that of the seventeenth aspect of the invention can be obtained.

  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.

Embodiment 1
This embodiment is an air conditioner (10) provided with a dust collection box (90) according to the present invention. In this air conditioner (10), the indoor unit (13) is installed on the ceiling of the indoor space. In the following, the configuration of the air conditioner (10) according to the present embodiment will be described first, and the configuration of the indoor unit (13) and the dust collection box (90) will be described in order.

<overall structure>
As shown in FIG. 1, the air conditioner (10) includes an outdoor unit (11) and an indoor unit (13). The outdoor unit (11) is provided with a compressor (30), an outdoor heat exchanger (35), an expansion valve (36), a four-way switching valve (33), and an outdoor fan (12). The indoor unit (13) is provided with an indoor heat exchanger (37) and an indoor fan (39).

  In the outdoor unit (11), the discharge side of the compressor (30) is connected to the first port (P1) of the four-way switching valve (33). The suction side of the compressor (30) is connected to the third port (P3) of the four-way switching valve (33).

  The outdoor heat exchanger (35) is configured as a cross fin type fin-and-tube heat exchanger. One end of the outdoor heat exchanger (35) is connected to the fourth port (P4) of the four-way switching valve (33). The other end of the outdoor heat exchanger (35) is connected to the liquid side closing valve (15).

  The outdoor fan (12) is provided in the vicinity of the outdoor heat exchanger (35). In the outdoor heat exchanger (35), heat is exchanged between the outdoor air sent by the outdoor fan (12) and the refrigerant flowing through the heat exchanger (35). Between the outdoor heat exchanger (35) and the liquid side closing valve (15), an expansion valve (36) having a variable opening degree is provided. The second port (P2) of the four-way switching valve (33) is connected to the gas side shut-off valve (16).

  The four-way selector valve (33) 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 the air conditioner (10), the heating operation is performed when the four-way switching valve (33) is in the first state, and the cooling operation is performed when the four-way switching valve (33) is in the second state. In the heating operation, a vapor compression refrigeration cycle in which the outdoor heat exchanger (35) functions as an evaporator and the indoor heat exchanger (37) functions as a condenser is performed in the refrigerant circuit (18). On the other hand, in the cooling operation, in the refrigerant circuit (18), a vapor compression refrigeration cycle is performed in which the outdoor heat exchanger (35) functions as a condenser and the indoor heat exchanger (37) functions as an evaporator.

<Configuration of indoor unit>
As shown in FIG. 2, the indoor unit (13) includes an indoor casing (34) having a casing body (26) (casing) and a decorative panel (27). A dust collection box (90) for collecting the dust removed from the air filter (40) in the casing main body (26) is provided outside the casing main body (26), as will be described later. As shown in FIGS. 3 to 5, the casing body (26) has an indoor heat exchanger (37), a drain pan (38), an indoor fan (39), an air filter (40), dust removing means ( 50), a dust container (60) and a dust transfer means (70) are provided.

  The casing body (26) is formed in a substantially rectangular parallelepiped box shape whose lower side is open. A heat insulating material (17) is laminated on the inner surface of the casing body (26). The casing body (26) is suspended and supported from the ceiling surface behind the ceiling so that the lower part is installed with the opening (1a) of the ceiling plate (1) inserted.

  The decorative panel (27) is formed in a rectangular plate shape (see FIG. 6). The plan view shape of the decorative panel (27) is slightly larger than the plan view shape of the casing body (26). The decorative panel (27) is attached so as to cover the lower side of the casing body (26) with the seal member (19) interposed therebetween. Thereby, the said decorative panel (27) is exposed to the indoor side in the state attached to the casing main body (26).

  As shown in FIG. 6, the decorative panel (27) has one inlet (22) and four outlets (23). The suction port (22) is formed in a rectangular shape at the center of the decorative panel (27), and is fitted with a slit-shaped suction grille (29). Each said blower outlet (23) is formed in the elongate rectangular shape so that each side of a decorative panel (27) may be followed. And each air outlet (23) is provided with the wind direction adjustment board (23a) (refer FIG. 3 etc.). The wind direction adjusting plate (23a) is configured to rotate and adjust the wind direction (the blowing direction).

  2, the decorative panel (27) has triangular openings (27a, 27a,...) Formed at the four corners of the panel. The opening (27a) is a hole for maintenance inspection used for an operator to access the back of the ceiling when the indoor unit (13) is subjected to maintenance inspection. For example, the opening (27a) is used for an operator to access when adjusting the suspension height of the casing body (26) suspended and supported from the ceiling surface of the ceiling. Therefore, usually, each opening (27a) is covered with a removable cover (27b).

  The indoor fan (39) is a so-called turbo fan. As shown in FIGS. 3 and 5, the indoor fan (39) is disposed near the center of the casing body (26) and is located above the suction port (22). The indoor fan (39) includes a fan motor (39a) and an impeller (39b). The fan motor (39a) is fixed to the top plate of the casing body (26). The impeller (39b) is connected to the rotating shaft of the fan motor (39a). A bell mouth (25) communicating with the suction port (22) is provided below the indoor fan (39). The bell mouth (25) divides the upstream space of the indoor heat exchanger (37) into an indoor fan (39) side and a suction grille (29) side in the casing body (26). The indoor fan (39) is configured to blow out the air sucked from below through the bell mouth (25) in the circumferential direction.

  The indoor heat exchanger (37) is configured as a cross fin type fin-and-tube heat exchanger. The indoor heat exchanger (37) is formed in a square shape in a plan view and is disposed so as to surround the indoor fan (39). In the indoor heat exchanger (37), heat is exchanged between indoor air (blowing air) sent by the indoor fan (39) and refrigerant circulating in the heat exchanger (37).

  The drain pan (38) is provided below the indoor heat exchanger (37). The drain pan (38) is for receiving drain water generated by condensation of moisture in the air in the indoor heat exchanger (37). The drain pan (38) is provided with a drain pump for draining drain water (not shown). The drain pan (38) is sloped so that drain water collects at the location where the drain pump is installed.

  The air filter (40) is formed in a long sheet shape, and is disposed below (inlet side) the bell mouth (25). As shown in FIG. 7, the air filter (40) includes a filter main body (41) having a rectangular shape in plan view, and a winding portion (42). The filter body (41) is sized to cover the inlet of the bell mouth (25) and is configured to capture dust in the indoor air sucked into the indoor fan (39). The winding portion (42) is provided continuously with the filter body (41) so as to be connected to a pair of opposing sides of the filter body (41), and a dust removing means (50) described later. The first winding drum (53) and the second winding drum (54) are wound up. In addition, a damper projecting piece (43) and a container projecting piece (44) are provided on each side of the filter body (41) to which the winding portion (42) is not connected (hereinafter referred to as a side). ing. The damper protruding piece (43) is provided at the end of the filter body (41), while the container protruding piece (44) is provided over the entire side.

  The dust removing means (50) is for removing dust trapped by the air filter (40). As shown in FIGS. 3 and 4, the dust removing means (50) includes a rotating brush (51) as a brush member and a filter moving means (52).

  The filter moving means (52) is for reciprocating the air filter (40) with respect to the rotating brush (51) while holding the air filter (40) in a predetermined position. The filter moving means (52) includes a first winding drum (53), a second winding drum (54), and a guide roller (55).

  The first winding drum (53) and the second winding drum (54) are arranged below the bell mouth (25) and outside the inlet. The first winding drum (53) is located on the right side (hereinafter referred to as the rear side) in FIG. 3, and the second winding drum (54) is located on the left side (hereinafter referred to as the front side) in FIG. Yes. The take-up drums (53, 54) are driven to rotate by a drive motor (56) shown in FIG. 4 so that the take-up portion (42) of the air filter (40) is taken up or unwound. Has been. Thereby, the filter main body (41) of the air filter (40) moves to the front side or the rear side. The guide roller (55) is disposed slightly forward of the first winding drum (53). The guide roller (55) is configured to support the winding portion (42) of the air filter (40) from below and to rotate as the air filter (40) moves.

  A frame-shaped guide member (57) formed so as to surround the inlet of the bell mouth (25) is attached to the lower surface of the bell mouth (25) (see FIGS. 3 and 5). The guide member (57) is for guiding the movement of the air filter (40) from above.

  The rotating brush (51) includes a rod-shaped shaft portion and a brush portion configured by a plurality of flocks around the shaft portion. The rotating brush (51) is disposed in a brush opening (62) of a dust container (60) described later so as to be positioned below and on the front side of the air filter (40). The rotating brush (51) is configured to remove dust when the filter main body (41) moves and the brush portion comes into contact with the filter main body (41). The rotating brush (51) is arranged at a position where the air filter (40) is sandwiched between the rotating brush (51) and the guide member (57). Therefore, since the filter body (41) is reliably pressed against the rotating brush (51), the dust removal efficiency can be improved.

  The dust container (60) temporarily stores the dust removed by the rotating brush (51). As shown in FIG. 8, the dust container (60) is a slightly elongated rectangular parallelepiped container. The dust container (60) is disposed so as to cross the air filter (40) below and on the front side of the air filter (40) (see FIGS. 3 and 4). As described above, the rotating brush (51) is provided in the brush opening (62) formed on the upper surface of the dust container (60).

  The dust container (60) is formed with an arc portion (61) having a central portion in the vertical direction bulging in an arc shape on the front surface. The air filter (40) is folded back along the arc portion (61) and wound around the second winding drum (54). In addition, on the end surface (hereinafter referred to as a side surface) in the width direction and the rear side surface (hereinafter referred to as a rear surface) of the dust container (60), flexible tubes (73, 75) of a dust transfer means (70) described later are provided. ) Are connected to the duct openings (63).

  The dust container (60) is configured to rotate as the air filter (40) moves. Specifically, as shown in FIG. 9, the dust container (60) is provided with a rotation shaft (65) penetrating in the length direction and protruding at the end of the upper surface. A filter action part (64) is provided.

  The dust container (60) is configured so that the rear side is urged upward by the urging force of the spring (66) during normal operation (see FIG. 9A). A seal portion (not shown) is provided between the rear side of the dust container (60) and the guide member (57), and the rear side of the dust container (60) is attached upward as described above. The inside of the dust container (60) and the suction side of the indoor fan (39) are shut off while being urged.

  Further, the dust storage container (60) is moved by the air filter (40) when the filter is cleaned, so that the container protrusion (44) of the air filter (40) comes into contact with the filter action part (64). It is configured to rotate by being pushed downward (see FIG. 9B). In this state, the above-described seal portion is opened, and the filter main body (41) can easily pass between the dust container (60) and the guide member (57). As described above, the rotation shaft (65), the filter action part (64), and the spring (66) constitute a rotation mechanism that rotates the dust container (60) by the movement of the air filter (40). Yes.

  The dust transfer means (70) introduces the air blown from the indoor fan (39) into the dust storage container (60), and transfers dust from the dust storage container (60) to the outside of the casing body (26) together with air. As shown in FIGS. 3 to 5, a supply-side duct (71) and a discharge-side duct (74) are provided. That is, the dust transfer means (70) is configured to transfer the dust in the dust container (60) to the outside of the casing using the air blown from the indoor fan (39).

  The supply side duct (71) and the discharge side duct (74) are arranged in a lower space of the bell mouth (25). The supply duct (71) has an outlet end connected to the duct opening (63) on the rear surface of the dust container (60) via the flexible pipe (73). The discharge side duct (74) is formed of a flexible duct that can be easily deformed, and the inlet end is connected to the duct opening (63) on the side surface of the dust container (60) via the flexible pipe (75). ing.

  The supply-side duct (71) is configured such that the inlet-side opening communicates with the arrangement space of the indoor fan (39), and an openable / closable damper (72) is provided at the opening. That is, the inlet side opening of the supply side duct (71) is located between the blowout side of the indoor fan (39) and the indoor heat exchanger (37). As shown in FIGS. 4 and 10, the damper (72) is configured to open and close by the movement of the air filter (40). Specifically, an opening / closing lever (81) whose one end is attached to the opening / closing lid (72a) of the damper (72) is provided in the supply side duct (71). The opening / closing lever (81) has a rotating shaft (82) at an intermediate position, and is configured to rotate about the rotating shaft (82). The other end of the opening / closing lever (81) serves as a filter action part (81a) that protrudes and protrudes from an opening hole in the upper surface of the supply duct (71).

  That is, the inlet side opening of the supply side duct (71) constitutes an introduction port through which the blown air of the indoor fan (39) before passing through the indoor heat exchanger (37) is introduced. The damper (72) constitutes an opening / closing means for opening / closing the inlet of the dust transfer means (70).

  In the normal operation, the damper (72) is configured such that one end side (damper (72) side) of the opening / closing lever (81) is urged downward by the spring (83) and the opening / closing lid (72a) is closed. (See FIG. 10A). Thereby, the blowing air of the indoor fan (39) does not flow into the supply side duct (71). In this state, the filter action part (81a) of the opening / closing lever (81) is protruded from the upper surface opening hole of the supply side duct (71).

  Further, the damper (72) is arranged such that when the filter is cleaned, the damper protrusion (43) of the air filter (40) comes into contact with the filter action part (81a) by the movement of the air filter (40). The action part (81a) is immersed in the supply side duct (71) (see FIG. 10B). In this state, one end side of the opening / closing lever (81) rotates upward, and the opening / closing lid (72a) of the damper (72) is opened. Thereby, the air blown from the indoor fan (39) flows into the supply duct (71) from the damper (72) and is supplied to the dust container (60).

  The discharge-side duct (74) has an outlet end that penetrates the side wall of the casing body (26) to the dust collection box (90) attached to the side surface of the casing body (26) as shown in FIG. It extends. That is, the discharge duct (74) conveys (discharges) the dust stored in the dust container (60) to the dust collection box (90) outside the casing together with the air in the supply duct (71). It is configured. Here, a conveyance passage (76) of the present invention is formed inside the discharge side duct (74).

<Configuration of dust collection box>
The dust collection box (90) is a substantially rectangular parallelepiped metal member, and as shown in FIG. 2, a part of the dust collection box (90) is an opening of the ceiling plate (1) (as viewed from the indoor side). It is arranged so as to be located outside of 1a). The dust collection box (90) is arranged at a position close to the opening (27a) to the extent that it does not overlap with the opening (27a) located at the corner of the decorative panel (27) in plan view. Yes. Thereby, when adjusting the suspension height of the casing body (26), the dust collection box (90) can be prevented from interfering when accessing the back of the ceiling through the opening (27a). At the same time, the dust collection box (90) can be easily accessed from the opening (27a).

  A duct opening (90a) (take-in port) connected to the other end of the discharge duct (74) is formed on the rear surface (right side of the figure) of the dust collection box (90). . The dust collection box (90) has an indoor fan (90) introduced into the dust collection box (90) on the upper surface thereof via the supply side duct (71) and the discharge side duct (74). 39) A discharge port (90b) for discharging the air blown out to the ceiling is formed. In this embodiment, the duct opening (90a) is provided on the rear surface of the dust collection box (90), and the discharge port (90b) is provided on the upper surface. However, the present invention is not limited to this. For example, a surface other than the rear surface May be provided with a duct opening (90b) and a discharge port (90b) on a surface other than the upper surface.

  Here, the discharge port (90b) is formed to have an opening area larger than that of the duct opening (90a), and the discharge port (90b) includes the dust collection box for insects and garbage. A mesh member (92) is provided for preventing entry into (90). Further, a viewing window (93) made of a transparent member (for example, glass or an acrylic plate) is provided at the lower part of the side surface of the dust collection box (90), and the dust collection box (90) It is assumed that an antibacterial agent and an insect repellent are disposed in. The entire dust collection box (90) or at least one surface thereof may be constituted by a transparent member, or a door is provided instead of the observation window (93), and the dust is stored in the box by opening the door. You may be able to grasp the amount.

  In addition, the dust collection box (90) has a collection port (91) (for collecting dust) at the lower side of the decorative panel (27) corresponding to the opening (27a) (hole for maintenance and inspection). Hole) is formed. When collecting dust in the dust collection box (90), a cleaner (95) or the like is inserted into the collection port (91) through the opening (27a) of the decorative panel (27). Then, the dust in the dust collection box (90) is collected by the vacuum cleaner (95) or the like (see FIG. 2B). That is, the collection port (91) is provided at a position (in the example shown in the figure, the lower side of the side surface) where the dust in the dust collection box (90) can be easily collected from the opening (27a) of the decorative panel (27). ing.

  The collection port (91) is not limited to the side surface of the dust collection box (90), and may be provided on the bottom surface or the like as long as dust is easily collected from within the dust collection box (90). Also good. Moreover, it is preferable that the said collection port (91) has a seal structure which dust does not flow out except at the time of dust collection | recovery work, and only the front-end | tip of a cleaner can be penetrated.

  The dust collection box (90) is attached to the side surface of the casing body (26) with a magnet (96) (locking means) as shown in FIG. That is, the casing main body (26) is formed by combining metal members so that a plurality of magnets (96, 96,...) Disposed on the side surface of the dust collection box (90) can be attached. ing. The magnet (96) can easily fix the dust collection box (90) to the side surface of the casing body (26). Further, by using the magnet (96) in this way, the dust collection box (90) is securely attached to the side surface of the casing body (26) even when the side surface of the casing body (26) has some unevenness. be able to.

  In this embodiment, the dust collection box (90) is attached to the side surface of the casing body (26) using a magnet (96). However, the present invention is not limited to this. For example, the dust collection box (90) is fixed with an adhesive. Other locking means such as providing a protruding portion on at least one of the dust collection box (90) and the casing body (26) and locking the protruding portion to the other member may be used. It may be used and fixed.

  As described above, the dust collection box (90) is disposed so as to protrude outward from the opening (1a) of the ceiling plate (1) in a plan view, thereby opening the ceiling plate (1) ( The volume can be increased without being restricted by the size of 1a) or the casing body (26). This makes it possible to collect a large amount of dust, reduce the frequency of collecting dust from the dust collection box (90), and improve the working efficiency in the dust collecting operation.

  In addition, since the dust collection box (90) is attached to the side surface of the casing body (26), it is not necessary to perform work for supporting the dust collection box (90) behind the ceiling. Work can be reduced.

  In addition, the dust in the dust collection box (90) is removed from the cleaner (95) through the opening (27a) of the decorative panel (27) and the recovery port (91) of the dust collection box (90). Therefore, it is possible to collect dust from the indoor side without performing work behind the ceiling, thereby improving workability.

  Further, as described above, by providing the discharge port (90b) above the duct opening (90a), the air is discharged into the dust collection box (90) together with the air blown from the indoor fan (39). While dust falls downward and accumulates due to its own weight, the blown air is discharged from the outlet (90b) to the back of the ceiling. Therefore, the dust can be prevented from being discharged together with the air from the discharge port (90b) to the ceiling, and the dust can be efficiently stored in the dust collection box (90). In particular, as described above, by forming the discharge port (90b) on the upper surface of the dust collection box (90), it is possible to more reliably prevent dust from being discharged from the discharge port (90b). it can.

  Further, since the discharge port (90b) has an opening area larger than that of the duct opening (90a), the ventilation resistance of the discharge port (90b) is reduced, so that air can be drawn from the dust collection box (90). It becomes easy to be discharged. As a result, it is possible to prevent the air flow from being disturbed in the dust collection box (90) and soaring the dust, and the dust can be reliably stored in the dust collection box (90).

  In addition, as described above, the net member (92) is provided at the discharge port (90b) to prevent insects and dust from entering the dust collection box (90) from the discharge port (90b). Thus, the dust can be more efficiently stored in the dust collection box (90).

  Furthermore, by providing a viewing window (93) at the lower part of the side surface of the dust collection box (90), the amount of dust accumulated in the dust collection box (90) can be easily grasped from the outside. Dust in the dust collection box (90) can be collected at a more appropriate time.

<Filter cleaning operation>
The air conditioner (10) of the present embodiment is configured to be switchable between a normal operation for performing cooling and heating and a filter cleaning operation for cleaning the air filter (40).

  First, in normal operation, the compressor (30), the outdoor fan (12), and the indoor fan (39) are driven. In the indoor unit (13), indoor air is sucked from the suction port (22), passes through the bell mouth (25), and then blown out from the indoor fan (39). This blown air is cooled or heated by exchanging heat with the refrigerant in the indoor heat exchanger (37), and then supplied into the room from each outlet (23).

  As shown in FIG. 11A, during the normal operation described above, the air filter (40) is disposed at a predetermined position covering the bell mouth (25). Therefore, the indoor air sucked from the suction port (22) passes through the air filter (40) before flowing into the bell mouth (25), and dust is captured by the air filter (40) at that time. . Further, the damper (72) of the supply side duct (71) is closed, and the air blown out from the indoor fan (39) does not flow into the supply side duct (71). Therefore, since all of the air blown from the indoor fan (39) is supplied to the indoor heat exchanger (37), the operating efficiency of the fan (39) is prevented from being lowered.

  Next, the filter cleaning operation (filter cleaning operation) will be described with reference to FIGS. 11 (b) to 11 (d). In the filter cleaning operation, a dust removing operation for removing dust trapped by the air filter (40) and a dust carrying operation for carrying the removed dust out of the casing body (26) are performed.

  First, in the filter cleaning operation, the indoor fan (39) is stopped and the two drive motors (56) of the dust removing means (50) are driven to perform the dust removing operation. In this state, as shown in FIG. 11B, the air filter (40) is wound around the second winding drum (54) and moves. Then, the container protrusion (44) of the air filter (40) comes into contact with the filter action part (64) of the dust container (60), and the dust container (60) rotates downward. As a result, an opening is formed between the rear side of the dust container (60) and the guide member (57), so that the filter body (41) and the rotating brush (51) and the guide do not interfere with the dust container (60). It passes between the members (57). The dust container (60) is connected to the supply duct (71) and the discharge duct (74) by flexible pipes (73, 75), respectively. It is not broken by dynamic movement.

  When the filter body (41) passes between the dust container (60) and the guide member (57), dust is removed by the rotating brush (51). The removed dust is stored in the dust storage container (60). In this state, the damper (72) is in a closed state. When the entire filter body (41) passes through the rotating brush (51), each drive motor (56) automatically rotates backward to rewind the air filter (40) (see FIG. 11C). Thereby, an air filter (40) is wound up by the 1st winding drum (53). In addition, since the container protrusion (44) of the air filter (40) continues to contact the filter action part (64) until the rotation direction of the drive motor (56) is switched as described above, the dust container ( 60) shows the state of rotating downward.

  When the air filter (40) is rewound and returned to the predetermined position, the container protrusion (44) of the air filter (40) separates from the filter action part (64), and the dust container (60) faces upward. Rotate to return to the original state. That is, the space between the rear side of the dust container (60) and the guide member (57) is sealed. And when an air filter (40) returns to a predetermined position, an indoor fan (39) will be driven again and dust conveyance operation will be performed.

  When the indoor fan (39) is driven again, the air filter (40) is further wound around the first winding drum (53). That is, in FIG. 11, the air filter (40) moves rightward from a predetermined position. When the air filter (40) moves, the damper protruding piece (43) of the air filter (40) comes into contact with the filter action portion (81a) of the supply side duct (71). Then, as shown in FIG. 11 (d), the open / close lever (81) of the supply duct (71) rotates to open the open / close lid (72a) of the damper (72). At this time, the drive motor (56) is stopped.

  When the damper (72) is opened, part of the air blown out from the indoor fan (39) flows into the supply duct (71) and is supplied into the dust container (60). The air flowing into the dust container (60) flows into the discharge duct (74) together with the dust and is discharged into the dust collection box (90) outside the casing body (26). At this time, only dust is stored in the dust collection box (90), and the air blown from the indoor fan (38) passes through the outlet (90b) formed in the dust collection box (90). It is discharged to the back. At that time, since the space between the dust container (60) and the guide member (57) is sealed, the air supplied to the dust container (60) does not flow out of the brush opening (62). When this discharge operation is performed for a predetermined time, the drive motor (56) is driven again, and the air filter (40) is returned to the predetermined position. Thereby, the damper protrusion (43) of the air filter (40) is separated from the filter action part (81a) of the open / close lever (81), and the damper (72) is closed. Thus, the filter cleaning operation ends.

  In the above-described filter cleaning operation, the reverse rotation drive and start / stop timing of the drive motor (56) may be measured according to the number of rotations of the drive motor (56). Further, a limit switch may be arranged at a predetermined location, and a striker corresponding to the limit switch may be provided in the air filter (40) so as to measure the timing of starting and stopping of the drive motor (56).

  In the filter cleaning operation, it is not necessary to perform a dust transfer operation every time. For example, a storage amount detection unit that detects that the amount of dust stored in the dust storage container (60) exceeds a predetermined amount during the filter cleaning operation is provided, and the dust transfer operation is performed only when the detection unit detects it. Good.

-Effect of Embodiment 1-
As described above, in this embodiment, the dust collection box (90) for storing the dust that has been removed from the air filter (40) and then discharged to the outside of the casing body (26) has a ceiling plate (1 Dust collection box (90) without being restricted by the size of the opening (1a) or casing (34) of the ceiling plate (1). The capacity can be increased. As a result, a large amount of dust can be stored in the dust collection box (90), and the frequency of collecting dust from the dust collection box (90) can be reduced. Therefore, it is possible to improve the working efficiency of the dust collecting work.

  Moreover, by attaching the dust collection box (90) to the side surface of the casing body (26), parts such as a support member are not required compared to the case where only the dust collection box (90) is installed in the ceiling. At the same time, installation work on the ceiling surface or side surface in the back of the ceiling is not required, so installation work can be reduced. In particular, by attaching the dust collection box (90) to the side surface of the casing body (26) with a magnet (96), the dust collection box (90) can be easily and reliably attached even when there are some irregularities on the side surface. It can be fixed to the side surface of the casing body (26).

  In addition, the dust collection box (90) is arranged so as not to overlap the entire opening (27a) of the decorative panel (27) when viewed from the indoor side, so that the opening (27a) is used. While preventing the maintenance work of the casing body (26) from being obstructed by the dust collection box (90), the dust collection box (90) is accessed from the opening (27a) to perform the dust collection work. Can be done. Therefore, it is possible to improve workability when collecting dust from the dust maintenance box (90) while ensuring workability during maintenance work of the casing body (26).

  In addition, a duct opening (90a) for connecting the discharge duct (74) is provided on the rear surface of the dust collection box (90), while a discharge port (90b) is provided on the upper surface. The dust discharged into the dust collection box (90) accumulates in the dust collection box (90) with its own weight, and only air is discharged from the discharge port (90b) to the back of the ceiling. That is, since the discharge port (90b) is located above the duct opening (90a), the dust discharged from the duct opening (90a) into the dust collection box (90) The dust is collected in the dust collection box (90) without being discharged from the discharge port (90b) to the back of the ceiling. Thereby, dust can be efficiently stored in the dust collection box (90).

  Further, since the discharge port (90b) is formed so as to have an opening area larger than that of the duct opening (90a), the ventilation resistance of the discharge port (90b) can be reduced, and dust can be stored. Air can smoothly pass through the box (90). Thereby, it is possible to prevent a wind flow that winds up dust in the dust storage box (90), and it is possible to more efficiently store the dust in the dust storage box (90).

  Further, since the discharge side duct (74) connected to the duct opening (90a) is constituted by a flexible duct, it is caused by vibration or the like between the casing body (26) and the dust collection box (90). Even when relative displacement occurs, the connection state between the two can be maintained, and dust can be reliably conveyed from the outer casing body (26) to the dust collection box (90).

  Moreover, since the net member (92) is provided in the discharge port (90b), it is possible to reliably prevent insects and dust from entering the dust collection box (90) from the discharge port (90b). Therefore, only dust can be efficiently stored in the dust collection box (90).

  Further, since a collection port (91) is formed at the lower side of the side surface of the dust collection box (90), a vacuum cleaner or the like can be installed from the indoor side through the opening (27a) and the collection port (91). By inserting it into the dust collection box (90), the dust in the dust collection box (90) can be collected. Therefore, when collecting dust from inside the dust collection box (90), it is possible to carry out the collection work from the indoor side without working behind the ceiling, thereby improving work efficiency.

<< Embodiment 2 >>
Next, Embodiment 2 of the present invention will be described with reference to FIG. In this embodiment, as shown in FIG. 13, the dust collection box is not attached to the side surface of the casing body (26) of the indoor unit (13), but is supported on the ceiling surface of the ceiling. Are different from the first embodiment, the same parts are denoted by the same reference numerals, and different parts will be described below.

  That is, the dust collection box (100) according to the present embodiment is connected and fixed to the other ends of a plurality of support members (101, 101,...) Whose one ends are fixed to the ceiling surface of the back of the ceiling. It is suspended and supported on the ceiling surface behind the ceiling via members (101, 101, ...). The dust collection box (100) has a duct opening (100a) and a discharge port (100b) at positions facing each other in plan view. The discharge port (100b) is provided above the duct opening (100a). And the other end side of the discharge side duct (74) extended from the casing main body (26) of an indoor unit (13) is connected to the said duct opening (100a) similarly to the said Embodiment 1. FIG. The discharge duct (74) is a flexible duct, and the discharge port (100b) is provided with a net member as in the first embodiment.

  The dust collection box (100) is provided with a collection port (100c) for collecting dust at the lower part of the side surface. The collection port (100c) is provided with a door (102), for example, so that the dust collection box (100) can be accessed only when dust is collected. Here, reference numeral 103 in FIG. 13 is configured by a transparent member such as glass or an acrylic plate so that the amount of dust in the dust collection box (100) can be easily confirmed, as in the first embodiment. It is a sight glass.

  In this embodiment, the discharge port (100b) is formed on the side surface of the dust collection box (100). However, the present invention is not limited to this and may be formed on the upper surface. By forming on the upper surface in this manner, it is possible to more reliably prevent dust from being discharged from the discharge port into the ceiling back together with the air flow, as in the case of the first embodiment.

-Effect of Embodiment 2-
As described above, according to this embodiment, the dust collection box (100) for collecting the dust removed from the air filter (40) is suspended and supported by the plurality of support members (101, 101,...) From the ceiling surface of the ceiling. Thus, the dust collection box (100) can be further increased in size, and the frequency of dust collection can be reduced as much as possible. Moreover, since the dust collection box (100) is suspended and supported separately from the casing body (26), the strength of the indoor casing (34) required for attaching the dust collection box to the casing body (26) is improved. It becomes unnecessary.

  Further, as described above, by connecting the dust collection box (100) and the casing body (26) with the discharge side duct (74), which is a flexible duct, vibration and relative displacement between the two can be achieved. Even when the above occurs, it is possible to prevent the duct from being damaged or the connecting portion from being detached, and dust can be reliably discharged from the casing body (26) to the dust collection box (100). .

  Furthermore, by providing a duct opening (100a) and a discharge port (100b) at positions facing each other in a plan view of the dust collection box (100), the dust collection box (100 It is possible to smoothly flow through the dust collection box (100) without hindering the flow of air flowing into. Thereby, it is possible to more reliably prevent an air flow that causes dust to rise in the dust collection box (100).

-Modification 1 of Embodiment 2
As shown in FIG. 14, in the first modified example, the dust collecting box (100) is also used together with the support members (111, 1111,...) (Casing support members) that support the casing body (26) in the above embodiment. It is designed to be suspended and supported by the.

  Specifically, the dust collection box (100) is disposed on the side of the casing body (26) that is suspended and supported from the ceiling surface behind the ceiling, and supports the casing body (26). The connection is fixed to (111, 111,...). For example, in the example shown in FIG. 14, the dust collection box (100) is connected and fixed at two locations on the upper and lower sides with respect to one support member (111).

  With this configuration, since the support member of the dust collection box (100) and the support member of the casing body (26, 26) can be shared, the number of parts can be reduced and the support member can be mounted on the ceiling. Work at the time of attaching to the back can be reduced.

-Modification 2 of Embodiment 2
As shown in FIG. 15, the second modified example is one in which a plurality of (two in the example of FIG. 15) casing bodies (26) are connected to one dust collection box (100) in the above embodiment. It is.

  Specifically, the dust collection box (100) has duct openings (100a, 100a) formed on opposite surfaces, and the casing body on one end side of each duct opening (100a, 100a). The other end side of the discharge side duct (74, 74) connected to (26, 26) is connected. The dust collection box (100) has a discharge port (100b) formed on the upper surface thereof.

  Thus, by connecting the discharge side ducts (74, 74) extending from the plurality of casing bodies (26) to one dust collection box (100), the dust collection box (100 ) Is eliminated, and the cost of the entire system can be reduced and the size can be reduced.

  In FIG. 15, the discharge side ducts (74, 74) extending from the two casing bodies (26, 26) are connected to one dust collection box (100). For example, three or more casings may be connected to one dust collection box (100).

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

  For example, in each of the above embodiments, the dust collection box (90, 100) is fixed to the casing main body (26) of the indoor unit (13) or the ceiling surface of the ceiling. You may make it install on a floor surface.

  In each of the above embodiments, the dust collection box (90, 100) is a metal member. However, the present invention is not limited to this, and the dust collection box (90, 100) may be formed of a resin material, paper, or wood for weight reduction. Furthermore, although the said dust collection box (90,100) is made into a rectangular parallelepiped shape, it is not restricted to this, For example, a cylindrical shape may be sufficient.

  Further, in each of the above embodiments, dust removed from the air filter (40) by the rotating brush (51) by driving the dust container (60) or the damper (72) according to the movement of the air filter (40). Is exhausted to the outside of the casing body (26) by the air blown from the indoor fan (39). However, the present invention is not limited to this. The dust trapped by the air filter (40) is removed, and the dust is removed from the casing body. (26) Any configuration may be used as long as the configuration is discharged to the outside.

  In each of the above embodiments, the dust removed by the rotating brush (51) is once stored in the dust storage container (60) and then transported. However, the dust storage container (60) and the supply-side duct (71) are connected to each other. Omitted and the dust removed by the rotating brush (51) may be directly conveyed by the air blown from the indoor fan (39).

  Further, in each of the above embodiments, the end of the discharge side duct (74) is simply connected to the dust collection box (90, 100) and the casing body (26). You may make it the structure which can be attached or detached. Taking the configuration of the first embodiment as an example, a configuration in which the end of the duct (74) can be detached will be described in detail below.

  Specifically, as shown in FIGS. 16 and 17, at the connection part (121) between the dust collection box (90) and the discharge side duct (74), the dust collection box (90) While the opening (90a) is provided with the first connection part (122), the second connection part (123) is provided at the end of the discharge duct (74) corresponding to the first connection part (122). The two connecting parts (123) are engaged.

  The first connecting portion (122) is formed by forming a bulging portion (122a) (protruding portion) extending over the entire circumference on the outer peripheral surface of a substantially cylindrical member, and this bulging portion (122a). The engaging portion (123c) of the second connecting portion (123) to be described later is engaged. One end of the first connection part (122) is fitted into the duct opening (90a) of the dust collection box (90).

  The second connection portion (123) includes a main body portion (123a) made of a substantially cylindrical member having a larger diameter than the first connection portion (122), and a claw portion (123b) is formed on the outer peripheral surface thereof. ) Are integrally formed. The claw portion (123b) extends in the axially outward direction of the discharge side duct (74) and engages with the bulging portion (122a) of the first connection portion (122). (123c), a projecting lever portion (123d) extending in a direction opposite to the engaging portion (123c), and the engaging portion (123c) and the lever portion (123d) at the intermediate portion thereof. And an elastic deformation portion (123e) elastically connected to (123a). The lever portion (123d) is formed so as to be positioned radially outward as it goes toward the distal end side. With this configuration, the elastic deformation portion (123e) is deformed by displacing the lever portion (123d) inward in the radial direction, and the engagement portion extends in a direction opposite to the lever portion (123d). (123c) can be displaced radially outward. On the other hand, when the lever portion (123d) is returned to the original position, the engagement portion (123c) is returned to the original position by the elastic restoring force of the elastic deformation portion (123e).

  Therefore, when the engaging portion (123c) of the second connecting portion (123) is engaged with the bulging portion (122a) of the first connecting portion (122), the engaging portion (123c) is the bulging portion. (122a), the elastic deformation portion (123e) elastically supporting the engagement portion (123c) is elastically deformed to displace the engagement portion (123c) outward in the radial direction. The engagement between the portion (123c) and the bulging portion (122a) is made possible (see FIG. 17B). On the other hand, when removing the second connection part (123) from the first connection part (122), the lever part (123d) is deformed inward in the radial direction so that the engagement part (123c) has a diameter. The engagement portion (123c) can be separated from the claw portion (122a) of the first connection portion (122) by being displaced outward in the direction, whereby the engagement portion (123c) and the claw portion can be separated. (122a) can be disengaged.

  With this configuration, the discharge duct (74) can be easily attached to and detached from the dust collection box (90), and the indoor unit (13) and the dust collection box (90) can be installed. Workability can be improved at the time of maintenance and maintenance.

  The connection structure as described above may also be applied to the connection part (125) between the discharge duct (74) and the casing body (26).

    As described above, the present invention is useful as a dust collection box for storing dust discharged from an indoor unit of an air conditioner having a dust removing function of an air filter.

It is a piping system figure showing the composition of the air harmony device provided with the dust collection box concerning the embodiment of the present invention. It is a figure which shows an indoor unit, (a) is the top view seen from the ceiling back, (b) is a side view. It is a longitudinal cross-sectional view which shows the structure in a casing. FIG. 4 is a sectional view taken along line IV-IV in FIG. It is the VV sectional view taken on the line of FIG. It is a perspective view which shows a makeup | decoration panel seeing from a lower side. It is a top view which shows an air filter. It is a perspective view which shows a dust storage container seeing from back. It is a figure which shows the rotation mechanism of a dust storage container, (a) shows the state at the time of non-rotation, (b) shows the state at the time of rotation. It is a figure which shows the opening / closing mechanism of the damper of a supply side duct, (a) shows the state at the time of a damper closing, (b) shows the state at the time of a damper open. It is a figure which shows the operation | movement of the filter cleaning driving | operation which concerns on embodiment of this invention, (a) is the state at the time of normal operation, (b) is the state at the time of filter winding, (c) is at the time of filter rewinding. The state (d) shows the state when dust is discharged. It is a perspective view which shows schematic structure of the attachment structure of a dust collection box. It is a figure which shows the installation state in the ceiling back of the dust collection box which concerns on Embodiment 2. FIG. FIG. 13 is a view corresponding to FIG. 12 of a dust collection box according to Modification 1 of Embodiment 2. FIG. 13 is a view corresponding to FIG. 12 of a dust collection box according to a second modification of the second embodiment. It is an equivalent figure of Drawing 2 (a) of an air harmony device concerning other embodiments. It is sectional drawing which shows schematic structure of a connection part with a discharge side duct.

1 Ceiling board
1a opening
10 Air conditioner
13 Indoor unit
26 Casing body (casing)
27 Decorative panel (inside panel)
27a Opening (Hole for maintenance inspection)
27b cover
34 Casing
39 Indoor fan
40 Air filter
50 Dust removal means
51 Rotating brush
60 Dust storage container
70 Dust transfer means
71 Supply side duct
72 Damper
74 Exhaust duct (flexible duct)
76 Transfer path
90,100 dust collection box
90a, 100a Duct opening (intake)
90b, 100b outlet
91 Collection port (hole for collecting dust)
92 Net members
93,103 Viewing window (transparent material)
96 magnets
100c Collection port (outlet)
101 Support member
102 door
111 Support member (casing support member)
121 connections
122a bulge (protrusion)
123b Claw

Claims (18)

It is connected to the casing (26) of the indoor unit (13) of the air conditioner (10) installed in the opening (1a) formed in the ceiling plate (1) via the transfer passage (76), and For collecting dust that is removed from the air filter (40) located on the suction side of the indoor fan (39) in the casing (26) and discharged out of the casing (26) through the transfer passage (76) A dust collection box,
Provided at the back of the ceiling so that at least a portion is located outside the opening (1a) of the ceiling plate (1) when viewed from the indoor side,
Corresponding to the hole (27a) for maintenance and inspection formed in the indoor side panel (27) of the indoor unit (13), there is a hole (91a) for collecting dust on either the lower surface or the side surface. Provided ,
The tip of the vacuum cleaner (95) is inserted into the dust recovery hole (91a) through the maintenance inspection hole (27a) so that the dust is recovered to the vacuum cleaner (95). A dust collection box characterized in that a hole (27a) for maintenance and inspection is associated with the hole (91a) for collecting dust. In claim 1,
  The dust collection box, wherein the dust collecting hole (91a) is provided with a seal mechanism for sealing between the hole (91a) and the tip of the vacuum cleaner (95). In claim 1 or 2 ,
A dust collection box attached to a side of a casing (26) of the indoor unit (13) via a locking means (96). In claim 3 ,
The locking means is a magnet (96),
The dust collection box, wherein the magnet (96) is disposed on a contact surface with the metal casing (26). In claim 3 or 4 ,
The hole (27a) for maintenance and inspection formed in the indoor side panel (27) of the indoor unit (13) is provided so as not to cover the entire hole (27a) when viewed from the indoor side. A dust collection box characterized by In claim 1 or 2 ,
A dust collection box which is suspended and supported by a support member (101) from the ceiling surface of the ceiling. In claim 6 ,
A dust collection box, wherein the dust collection box is suspended and supported by a casing support member (111) that suspends and supports the casing (26) from the ceiling surface of the ceiling. In any one of Claims 1, 2, 6 , and 7 ,
A dust collection box, characterized in that an outlet (100c) for taking out dust inside is provided at the lower part of the side surface. In any one of Claims 1-8 ,
A dust collection box connected to the casing (26) by a flexible duct (74) constituting the transfer passage (76). In any one of claims 1-9,
Dust intake ports (90a, 100a) connected to the transfer passage (76) and discharge ports (90b, 100a) for discharging the air blown from the indoor fan (39) used for transferring the dust to the outside 100b), and
The dust collection box, wherein the discharge port (90b, 100b) is located above the intake port (90a, 100a). In claim 10 ,
A dust collection box, wherein the discharge ports (90b, 100b) are formed on an upper surface. In claim 10 ,
The dust collection box, wherein the intake port (100a) and the discharge port (100b) are formed at positions facing each other in a plan view. In claim 10 ,
The dust collection box, wherein an opening area of the discharge port (90b, 100b) is larger than that of the intake port (90a, 100a). In claim 10 ,
A dust collecting box, wherein a net member (92) is disposed at the discharge port (90b, 100b) so as to cover the opening. In any one of claims 1 to 14,
A dust collection box, wherein at least a part is formed of a transparent member (93, 103) so that the amount of stored dust can be confirmed. In the casing (26), an indoor heat exchanger (37), an indoor fan (39) that sucks air from the room and blows it out to the indoor heat exchanger (37), and a suction side of the indoor fan (39) are provided. An air conditioner having an indoor unit (13) provided with an air filter (40)
Dust removing means (50) for removing dust trapped in the air filter (40);
Dust transfer means (70) for transferring the dust removed by the dust removal means (50) out of the casing (26);
The dust collection box (90, 100) according to any one of claims 1 to 15 , which is located outside the casing (26) and stores dust transported by the dust transport means (70). An air conditioner characterized by. In claim 16 ,
The dust collection box (90) is connected to the casing (26) by a flexible duct (74) constituting the transport passage (76),
The air conditioner characterized in that the flexible duct (74) is detachably connected to at least one of the dust collection box (90) and the casing (26). In claim 17 ,
At the end of the flexible duct (74), a claw portion (123b) is provided,
The air conditioner is characterized in that the claw portion (123b) is configured to be detachable from a protruding portion (122a) provided on a mating member to which the flexible duct (74) is connected.

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