WO2007060926A1

WO2007060926A1 - Air conditioner

Info

Publication number: WO2007060926A1
Application number: PCT/JP2006/323153
Authority: WO
Inventors: Tomohiro Yabu; Hiromune Matsuoka; Jun Koizumi
Original assignee: Daikin Industries, Ltd.
Priority date: 2005-11-28
Filing date: 2006-11-21
Publication date: 2007-05-31
Also published as: JP2007147168A; JP4172484B2

Abstract

A duct-type air conditioner in which labor for cleaning a filter provided at a suction opening is reduced. The air conditioner (1) is a duct-type air conditioner mountable in a space (S) between roof and ceiling and has a casing (2) in which an blowout opening (22a) connected to the duct and the suction opening (21a) connected to the duct are formed, a filter (4) provided at the suction opening (21a), a cleaning device (9) for removing dust from the filter (4) where it is collected, and a dust box (11) for containing the dust removed by the cleaning mechanism (9).

Description

Specification

Air conditioner

Technical field

The present invention relates to an air conditioner, and more particularly to a duct type air conditioner that can be installed in a ceiling space of an air conditioning room.

Background art

[0002] As a conventional duct-type air conditioner, for example, a casing in which a suction port connected to a duct on the back surface and a blower outlet connected to a duct on the front surface are formed, a blower fan disposed in the casing, and Some are equipped with heat exchangers. In such a duct-type air conditioner, a filter is provided at the suction port. This filter collects dust contained in the air so that it does not flow into the casing.

Disclosure of the invention

[0003] However, if the air conditioner is operated for a long time, dust accumulates on the above-mentioned filter and pressure loss at the suction port increases, resulting in performance degradation and the like. It is necessary to remove. The cleaning of the filter is an extremely labor-intensive operation because it is necessary to open the ceiling inspection port and remove the filter from the suction port of the ducted casing.

An object of the present invention is to reduce labor required for cleaning a filter provided at an inlet in a duct-type air conditioner.

[0004] An air conditioner according to a first aspect of the present invention is a duct-type air conditioner that can be installed in a ceiling space, and has a duct-connected air outlet and a duct-connected air inlet. A casing, a filter provided at the suction port, a cleaning mechanism for removing dust collected by the filter from the filter, and a dust box for storing the dust removed by the cleaning mechanism are provided.

[0005] In this air conditioner, since a cleaning mechanism is provided, it is possible to remove the filter force dust provided at the suction port of the casing without removing the filter and store the removed dust in the dust box. it can. Thereby, in this duct type air conditioner, The labor required for cleaning the filter provided at the suction port can be reduced.

[0006] An air conditioner according to a second invention is the air conditioner according to the first invention.

The dust box is provided on the side surface of the casing.

In this air conditioner, since the dust box is provided on the side surface of the casing, the flow of directional air from the inlet to the outlet is hindered.

[0007] An air conditioner according to a third invention is the air conditioner according to the second invention.

The casing lid is provided with a casing lid that can be opened when checking the equipment accommodated in the casing. The dust box is provided on the 佃 j surface of the casing provided with the casing lid.

[0008] In this air conditioner, since the dust box is provided on the side surface of the casing provided with the casing lid, the dust box can be easily accessed by opening the inspection opening on the ceiling.

[0009] An air conditioner according to the fourth invention is an air conditioner according to the third invention!

The dust box is provided integrally with the casing lid.

In this air conditioner, the dust box is provided integrally with the casing lid.

When inspecting the equipment housed in the casing, the dust box can be removed together with the casing lid.

[0010] An air conditioner according to a fifth aspect of the present invention is the air conditioner according to any of the first to fourth aspects of the invention, wherein the nozzle box is capable of inserting a nozzle of a cleaner into the dust box. Is formed downward or horizontally.

[0011] In this air conditioner, since the nozzle insertion port is formed downward or horizontally, it is easy to open the inspection port provided on the ceiling and insert the nozzle of the cleaner into the nozzle insertion port. The dust collected in the dust box can be sucked into the vacuum cleaner from the dust box and discharged.

[0012] An air conditioner according to a sixth aspect of the present invention is the air conditioner according to the fifth aspect of the invention, wherein the nozzle insertion opening is provided with an opening / closing lid that is opened by inserting a nozzle of a cleaner.

This air conditioner opens by inserting the nozzle of the vacuum cleaner into the nozzle insertion port. Since the lid is open and closed, the dust collected in the dust box by the cleaning mechanism can be prevented from scattering the nozzle insertion force until the vacuum cleaner sucks the dust collected in the dust box. it can.

[0013] An air conditioner according to a seventh invention is the air conditioner according to the sixth invention.

The open / close lid is closed by removing the nozzle of the vacuum cleaner from the nozzle insertion loca.

In this air conditioner, the opening / closing lid is closed by removing the nozzle of the vacuum cleaner, so that it is possible to prevent forgetting to close the opening / closing lid.

[0014] An air conditioner according to the eighth invention is the air conditioner according to the sixth or seventh invention, wherein the open / close lid opens upward.

In this air conditioner, since the opening / closing lid opens upward, it is possible to prevent the dust accumulated in the dust botton from falling down when the opening / closing lid is opened.

[0015] An air conditioner according to a ninth aspect of the present invention is the air conditioner according to any of the fifth to eighth aspects, wherein the open / close lid is closed by its own weight.

[0016] In this air conditioner, the open / close lid closes by its own weight, and therefore the open / close lid can be closed by extracting the nozzle of the vacuum cleaner from the nozzle.

[0017] An air conditioner according to a tenth aspect of the present invention is the air conditioner according to any of the fifth to ninth aspects, wherein the two open / close lids are provided side by side in the insertion direction of the nozzle of the cleaner. ing.

In this air conditioner, two open / close lids are arranged side by side in the direction of the nozzle of the vacuum cleaner, so that the dust collected in the dust box by the cleaning mechanism is prevented from being scattered by the nozzle insertion port force. Further improvement can be achieved.

[0018] An air conditioner according to an eleventh aspect of the invention is the air conditioner according to any of the fifth to tenth aspects of the invention, wherein the dust box has a material force that is elastically deformable by a suction force of a cleaner. Is provided.

[0019] In this air conditioner, since the dust box is provided with a valve having a material force that can be elastically deformed by the suction force of the vacuum cleaner, the dust accumulated in the dust box by the cleaning mechanism also scatters the insertion loca. It is possible to prevent the dust from being collected in the dust box and suck it out from the dust box to the vacuum cleaner. wear.

[0020] An air conditioner according to a twelfth aspect of the present invention is the air conditioner according to any of the fifth to eleventh aspects of the present invention, wherein the dust box includes a first wall portion facing the nozzle insertion port, A second wall portion facing the wall portion and a third wall portion in contact with the first wall portion are provided. A plurality of air holes are formed in the second wall portion.

In this air conditioner, when the nozzle of the vacuum cleaner is inserted into the nozzle insertion port and dust is sucked into and discharged from the dust box, air can be taken in from the outside of the dust box through the air hole. Therefore, the pressure in the dust box becomes extremely low, and dust can be prevented from being sucked by the vacuum cleaner.

[0021] An air conditioner according to a thirteenth aspect of the present invention is the air conditioner according to any of the fifth to eleventh aspects of the invention, wherein the dust box includes a first wall facing the nozzle insertion port, A second wall portion facing the wall portion and a third wall portion in contact with the first wall portion are provided. A plurality of air holes are formed in the third wall portion.

[0022] An air conditioner according to a fourteenth aspect of the invention is the air conditioner according to the thirteenth aspect of the invention, wherein the air hole has an intermediate position force between the first wall part and the second wall part on the second wall part side. It is formed at the position.

[0023] In this air conditioner, since the air hole is formed from the intermediate position between the first wall portion and the second wall portion to the position on the second wall portion side, the nozzle of the cleaner is used as the nozzle insertion port. When the dust is sucked into the vacuum cleaner and discharged from the dust box, the dust collected in the dust box prevents the external force of the dust box from taking in the air.

[0024] An air conditioner according to a fifteenth aspect of the present invention is the air conditioner according to any of the first to eleventh aspects of the invention, wherein the casing has an air flow path through which the suction loca also flows toward the outlet. Is formed. The dust box is arranged in the casing, and has air holes communicating with the air flow path from the suction port to the blowout port. The portion is arranged on the upstream side of the portion where dust is stored.

[0025] In this air conditioner, the dust box is disposed in the casing. In the case of the dust box, the portion of the dust box where the air hole is formed is located upstream of the portion where the dust is stored. Therefore, the inside of the dust box can be made negative pressure by the operation of the blower fan, so that the dust in the dust box can be compressed and stored in the dust box compactly.

[0026] An air conditioner according to a sixteenth aspect of the present invention is the air conditioner according to any of the first to eleventh aspects of the invention, wherein the casing has a blower fan for sucking air into the casing through the suction port. And a suction passage for air to the suction loa blower fan is formed. The dust box is arranged outside the casing and has an air hole communicating with the suction flow path.

[0027] In this air conditioner, when the nozzle of the vacuum cleaner is inserted into the nozzle insertion port and dust is sucked into the vacuum cleaner and discharged from the dust box, air is taken in from the outside of the dust box through the air hole. As a result, the pressure in the dust box becomes extremely low, and dust can be prevented from being attracted by the vacuum cleaner.

In this air conditioner, the dust box is located outside the casing, and the air holes communicate with the suction flow path. Thus, the dust in the dust box can be compressed and stored in the dust box compactly.

[0028] An air conditioner according to a seventeenth invention is the air conditioner according to any of the fifth to fourteenth inventions, wherein the dust box is removable from the casing and is removed from the filter by the cleaning mechanism. The dust is introduced through the dust introduction hose.

[0029] In this air conditioner, the dust box and the cleaning mechanism are in contact via the dust introduction hose. Since the dust box can be placed at or near the inspection port on the ceiling, it is easy to insert the vacuum cleaner nozzle into the nozzle insertion port.

[0030] An air conditioner according to an eighteenth aspect of the invention is the air conditioner according to any of the first to fourth aspects of the invention, wherein the dust box leads out dust accumulated inside to an inspection port provided on the ceiling. A dust outlet hose is connected. At the tip of the dust extraction hose on the inspection side, a nozzle insertion port is formed through which the nozzle of the vacuum cleaner can be inserted.

In this air conditioner, the dust box is connected to a dust outlet hose for leading dust accumulated in the dust box to the inspection port provided on the ceiling. Since a nozzle insertion port is formed in which the nozzle of the vacuum cleaner can be inserted, the dust collected in the dust box can be removed by a simple operation when the nozzle of the vacuum cleaner is inserted into the nozzle insertion port. It can be sucked into the vacuum cleaner and discharged. In addition, nozzles necessary for sucking and discharging dust accumulated in the dust box with a vacuum cleaner can be placed at or near the ceiling inspection port. The work of inserting into the insertion port can be easily performed.

[0031] An air conditioner according to a nineteenth aspect of the present invention is the air conditioner according to any of the first to third aspects, wherein the dust box is detachably provided on the casing. In this air conditioner, since the dust box is detachably provided on the casing, the dust box in which dust is accumulated can be removed from the casing and the dust in the dust box can be discharged.

Brief Description of Drawings

FIG. 1 is a schematic side cross-sectional view of a ceiling-mounted air conditioner according to one embodiment of the present invention.

FIG. 2 is a schematic plan sectional view of the air conditioner (however, the heat exchanger is shown with the top plate removed).

FIG. 3 is a schematic side view of the air conditioner, and is a view of FIG. 2 as viewed from the A direction.

FIG. 4 is a schematic rear view of the air conditioner as viewed from the direction B in FIG. FIG. 5 is a perspective view showing the structure of a sprocket of a filter.

FIG. 6 is a schematic cross-sectional view of the cleaning mechanism and the dust box, and is a cross-sectional view taken along the line CC in FIG.

FIG. 7 is a schematic side view of the air conditioning apparatus according to Modification 1, corresponding to FIG.

FIG. 8 is a schematic plan cross-sectional view of an air conditioner according to Modification 2 and corresponds to FIG.

FIG. 9 is a schematic cross-sectional view of a cleaning mechanism and a dust box according to Modification 2 and is a DD cross-sectional view of FIG.

FIG. 10 is a schematic cross-sectional view of a cleaning mechanism and a dust box according to Modification 3, corresponding to FIG.

FIG. 11 is a schematic cross-sectional view of a cleaning mechanism and a dust box according to Modification 4, corresponding to FIG.

FIG. 12 is a schematic cross-sectional view of a cleaning mechanism and a dust box according to Modification 4, corresponding to FIG.

FIG. 13 is a schematic cross-sectional view of a cleaning mechanism and a dust box according to Modification 4 and corresponds to FIG.

FIG. 14 is a schematic cross-sectional view of a cleaning mechanism and a dust box according to Modification 4 and corresponds to FIG.

FIG. 15 is a schematic cross-sectional view of a cleaning mechanism and a dust box according to Modification 5, corresponding to FIG.

FIG. 16 is a schematic plan sectional view of an air conditioner according to Modification 6 (however, the heat exchanger is shown with the top plate removed).

FIG. 17 is a schematic cross-sectional view of a cleaning mechanism and a dust box according to Modification 6 and is a cross-sectional view taken along the line EE of FIG.

FIG. 18 is a schematic plan cross-sectional view of an air conditioner according to Modification 7 (however, the heat exchanger is shown with the top plate removed).

FIG. 19 is a schematic cross-sectional view of a dust introduction hose and a dust box according to Modification 7. FIG. 20 is a schematic plan sectional view of an air-conditioning apparatus according to Modification 8 (however, the heat exchanger is shown with the top plate removed).

FIG. 21 is a schematic cross-sectional view of a dust outlet hose and a dust box according to Modification 8. Explanation of symbols

[0033] 1 Air conditioner

2 Casing

2a Air flow path

2b Suction channel

3 Heat exchanger

4 Blower fan

5 Huinoleta

9 Cleaning mechanism

11 Dust box

12 1st wall

13 Nozzle outlet

14, 114 Open / close lid

16 Inner valve

17 Second wall

17a, 18a Air hole

18 Third wall

21a Suction port

22a Air outlet

26a Casing lid

61 Dust introduction hose

71 Dust outlet hose

73 Nozzle outlet

BEST MODE FOR CARRYING OUT THE INVENTION

[0034] Hereinafter, an embodiment of a duct-type air conditioner according to the present invention will be described with reference to the drawings. And explain.

(1) Basic configuration of duct type air conditioner

FIG. 1 shows a schematic side sectional view of a duct-type air conditioner 1 according to one embodiment of the present invention. The air conditioner 1 has a so-called duct structure that can be disposed in a ceiling space S formed above the ceiling surface U of the air conditioning room. The air conditioner 1 mainly includes a casing 2 and a heat exchanger 3. And a blower fan 4. In the figure, O represents the rotation center of the blower fan 4.

The casing 2 is a substantially rectangular box-shaped member that accommodates the heat exchanger 3 and the blower fan 4 therein, and has a suction port 21a on the back surface 21 (the surface on the right side of FIG. 1) and a front surface 22 (the surface of FIG. 1). The outlet 22a is formed on the left side. In the present embodiment, the suction port 21a and the blower port 22a are substantially rectangular openings. The suction port 21a is provided with a filter 5 that collects dust in the air sucked from the suction port 21a. The suction duct 6 is connected to the suction inlet 21a provided with the filter 5, and the blowout duct 7 is connected to the blowout outlet 22a. Thus, an air passage 2 a extending from the inlet 21 a to the outlet 22 a is formed in the casing 2.

The heat exchanger 3 is disposed near the suction port 21a in the air flow path 2a, and is a device for heating or cooling the air sucked from the suction port 21a. In the present embodiment, the heat exchanger 3 is a cross fin tube heat exchanger, and the upper part thereof is arranged so as to be inclined obliquely toward the outlet 22a. A drain pan 8 is arranged below the heat exchanger ^^ 3 so that the dew condensation water generated by the heat exchanger 3 can be received. It is a device for inhaling the air that has passed through the heat exchanger 3, increasing the pressure, and blowing it out from the outlet 22a. In this embodiment, the blower fan 4 is a sirocco fan, and has a scroll casing 41 having a spiral cross section, an impeller 42 disposed in the scroll casing 41, and a fan that rotationally drives the impeller 42. And a motor 43. The scroll casing 41 has a scroll suction port 41a into which air that has passed through the heat exchanger 3 flows, and a scroll air outlet 41b formed so as to blow air toward the air outlet 22a. in this way, The scroll casing 41 constitutes a part of the air flow path 2a. Here, the flow path from the suction port 21a to the suction port 41a of the scroll casing 41 of the blower fan 4 in the air flow channel 2a is defined as the suction flow channel 2b, and the scroll casing 41 in the air flow channel 2a. The flow path from the inlet 4 la to the outlet 22a is referred to as the outlet passage 2c. In this embodiment, the impeller 42 includes a disk 42a that is rotationally driven by the fan motor 43, and a large number of blades 42b that are arranged along the outer periphery of the disk 42a (in FIG. 1, the number of blades 42b). An impeller for a sirocco fan having only one sheet shown), and is arranged in a scroll casing 41.

[0036] (2) Air conditioning operation of the air conditioner

Next, the air conditioning operation of the air conditioner 1 will be described with reference to FIG. When the operation is started, the fan motor 43 is driven and the impeller 42 of the blower fan 4 rotates. In addition, as the fan motor 43 is driven, refrigerant is supplied into the heat exchanger 3 from an outdoor unit (not shown). Here, the heat exchanger 3 functions as an evaporator during the cooling operation and as a condenser during the cooling operation. As the impeller 42 rotates, the air in the suction flow path 2b of the casing 2 is sucked into the scroll casing 41 from the scroll suction port 41a and boosted by the impeller 42, and then the scroll outlet 41b. And it blows out in the blowing duct 7 from the blower outlet 22a. As a result, the air in the suction duct 6 is sucked into the casing 2 from the suction port 21a through the suction flow path 2a. The inhaled air reaches the heat exchange 3 and is cooled or heated when passing through the heat exchange 3.

[0037] That is, in the air conditioner 1, the air force in the suction duct 6 flows into the casing 2 through the suction port 21a and passes through the heat exchange ^^, and further, the scroll suction port 41a passes through the scroll scale. After being sucked into the single 41 and pressurized by the impeller 42, an air flow is formed in which the air is blown into the blowout duct 7 from the scroll blowout opening 41b and the blowout opening 22a.

If such an air conditioning operation is performed for a long time, dust accumulates on the filter 5 and the pressure loss at the suction port 21a increases, resulting in performance degradation. For this reason, it is necessary to remove the dust collected by the filter 5, but in the air conditioner 1 of the present embodiment, the dust can be removed from the filter 5 without removing the filter 5 from the casing 2. It has become. Hereinafter, dust collected by the filter 5 of the air conditioner 1 of the present embodiment is removed. The structure for leaving and the cleaning operation will be described.

[0038] (3) Configuration of filter, cleaning mechanism and dust box

In the air conditioner 1 having the basic configuration as described above, as shown in FIGS. 2 to 6, the filter 5 includes a frame member 51 and a filter member 52 that is held in a meandering manner in the frame member 51. The filter 5 (that is, the filtering member 52) removes the dust collected during the air-conditioning operation from the filter 5, and collects the dust removed by the cleaning mechanism 9. A dust box 11 is provided. Here, FIG. 2 is a schematic plan sectional view of the air-conditioning apparatus 1 (however, the heat exchanger 3 is shown with the top plate 23 removed). FIG. 3 is a schematic side view of the air conditioner 1, and is a view of FIG. 2 as viewed from the A direction. FIG. 4 is a schematic rear view of the air conditioner 1, and is a view of FIG. FIG. 5 is a perspective view showing a structure in the vicinity of the sprocket 53 of the filter 5. 6 is a schematic cross-sectional view of the cleaning mechanism 9 and the dust box 11, and is a cross-sectional view taken along the line CC in FIG.

[0039] The filtering member 52 constituting the filter 5 has a strip-shaped core material 52a having a substantially rectangular cross section. The core material 52a is a member formed of a flexible material so as to be freely bent. The core material 52a is formed with a large number of engagement holes 52b at regular intervals for engaging the teeth 53b of the sprocket 53 that rotatably supports the filter member 52. Then, a pine needle-like hair member 52c is planted in a portion of the heartwood 52a on the side of the suction dart 6.

The frame member 51 constituting the filter 5 is arranged along the top plate 23, the lower plate 24, and the side plates 25 and 26 of the casing 2 in the rear view (that is, when viewed from the suction port 21a side). It is a substantially rectangular member disposed so as to surround the periphery of the mouth 21a, and is fixed to the casing 2 to constitute the top surface, the bottom surface, and the side surface of the casing 2. Further, in such a frame member 51, a sprocket 53 is disposed in order to arrange the filtering member 52 in a meandering state and to circulate and move the filtering member 52. Is provided with a roller-like support member 54 that contacts the surface of the core material 52a and supports the core material 52a.

[0040] In the sprocket 53, a tooth portion 53b is formed around the cylindrical main body portion 53a to engage with the engagement hole 52b. A rotation shaft 53c is provided at the center of the main body 53a. The rotating shaft 53c is driven to rotate in the direction of the arrow by a motor (not shown). Thus, the tooth portion 53b of the sprocket 53 is engaged with the engagement hole 52b, and the filtering member 52 can be circulated and moved in the direction of the arrow while maintaining the meandering state.

The cleaning mechanism 9 is disposed at a substantially vertical center of the side surface of the casing 2 (specifically, the side plate 26), and mainly removes dust collected on the hair member 52c of the filter member 52. It consists of a main body 91. The main body 91 is provided with a passage 92 through which the filtering member 52 passes, and contact portions 93 are arranged at a plurality of locations along the passage 92. The contact portion 93 forms a narrow passage through which the filtration member 52 passes, and the hair member 52c is captured by moving the contact member 93 while pressing the hair member 52c against the corner of the wall portion forming the passage. The collected dust can be removed. In the present embodiment, since the cleaning mechanism 9 is disposed at the bent portion of the filtering member 52, the support member 54 provided at the bent portion of the filtering member 52 where the cleaning mechanism 9 is disposed is provided with the cleaning mechanism 9. It is arranged in the passage 92 of

The dust box 11 is connected to the main body 91 of the cleaning mechanism 9 and is a container for storing dust that has been wiped off by the contact portion 93. In the present embodiment, the dust box 11 is provided on the side surface of the casing 2 (specifically, the side plate 26). More specifically, the dust box 11 is disposed outside the cleaning mechanism 9 and along the outer surface of the side plate 26 of the casing 2 in the rear view. The dust box 11 is detachably connected to the main body 91 of the cleaning mechanism 9.

Here, in the air conditioner 1 of the present embodiment, the electrical component box 10 in which various electrical components including the control P plate and the like are housed is provided near the air outlet 22a of the side plate 26. Further, the side plate 26 is provided with a casing lid 26a that can be opened when inspecting devices such as the heat exchanger 3 and the blower fan 4 accommodated in the casing 2. Here, almost all of the side plate 26 except the peripheral edge portion is a casing lid 26a, which can be removed at the time of inspection. In the vicinity of the side plate 26 on the ceiling surface U, an inspection port U1 is arranged to facilitate access to the electrical component box 10 and the casing lid 26a. In the present embodiment, the dust box 11 is detachably provided on a portion of the side plate 26 that is not the casing lid 26a.

[0042] In the present embodiment, the dust box 11 is a substantially rectangular tube-shaped container. A nozzle insertion port 13 into which the nozzle 20 of the vacuum cleaner can be inserted is formed downward in the first wall portion 12 constituting the lower surface. The nozzle insertion opening 13 is provided with an opening / closing lid 14 that opens when the nozzle 20 of the vacuum cleaner is inserted and that closes when the nozzle 20 of the vacuum cleaner is pulled out. The opening / closing lid 14 is a pair of plate-like members that are pivotally supported by the first wall portion 12 of the dust box 11 so as to be able to be opened and closed in the upward and downward direction. When the downward force is also inserted, the opening / closing lid 14 is pushed upward by the tip of the nozzle 20 of the vacuum cleaner to open, and the nozzle 20 of the vacuum cleaner is moved downward from the nozzle insertion port 13 to the inclined surface 13a of the nozzle insertion port 13. By pulling it out, the force pushed upward by the tip of the nozzle 20 of the vacuum cleaner is released and the opening / closing lid 14 is closed by its own weight, and the stopper portion 15 disposed below the opening / closing lid 14 of the nozzle insertion port 13. Abut. The stopper portion 15 is formed at the lowermost portion of the nozzle insertion port 13 so as to fit into the inner surface of the nozzle of the vacuum cleaner. The dust box 11 is provided with an inner valve 16 made of a material that can be elastically deformed by the suction force of the vacuum cleaner. The inner valve 16 is provided above the opening / closing lid 14. As the material of the inner valve 16, soft rubber or rubber can be used. In addition, the second wall 17 that constitutes the upper surface of the dust box 11 and is disposed so as to face the first wall 12 has a plurality of air that communicates with the outside of the casing 2 (that is, the ceiling space S). Hole 17a is formed. Here, these air holes 17a are substantially circular with a diameter of 5 mm or less. Furthermore, the upper portion of the third wall portion 18 that constitutes the side surface of the dust box 11 and contacts the first wall portion 12 and the second wall portion 17 communicates with the main body portion 91 of the cleaning mechanism 9. The dust that has been removed by the contact part 93 can be introduced!

(4) Filter cleaning operation

Next, the cleaning operation of the filter 5 of the air conditioner 1 will be described with reference to FIG. 2 and FIGS.

After the air conditioning operation of the air conditioner 1 is performed for a predetermined time, the motor (not shown) of the filter 5 is driven automatically or manually, and the sprocket 53 is rotated to circulate the filter member 52. Then, the filtering member 52 passes through the passage 92 of the cleaning mechanism 9, and during this passage, the dust collected by the hair-like member 52c of the filter 5 is removed by the contact portion 93 and collected in the dust box 11. . That is, the dust collected by the filter 5 by the cleaning mechanism 9 The dust can be removed from the filter 5, and the dust removed by the cleaning mechanism 9 can be stored in the dust box 11.

[0044] Next, when dust accumulates in the dust box 11, open the inspection port U1 of the ceiling surface U, and also insert the vacuum nozzle 20 into the nozzle insertion port 13 so that the opening / closing lid 14 is attached to the vacuum nozzle. Push upwards with the tip of 20 and open it, and operate the vacuum cleaner to suck the dust accumulated in the dust box 11 from the dust box 11 into the vacuum cleaner. At this time, since the inner valve 16 is elastically deformed by the suction force of the cleaner (see FIG. 6), the dust accumulated in the dust box 11 is quickly discharged from the dust box 11 and sucked into the cleaner. Further, at this time, the air in the dust box 11 tends to be discharged by the suction force of the vacuum cleaner, and the pressure of the dust box 11 tends to decrease. However, in the air conditioner 1 of this embodiment, the second wall of the dust box 11 Since the air hole 17a is provided in the part 17, air is taken into the dust box 11 from the outside of the casing 2 during the suction operation by the vacuum cleaner, and the pressure in the dust box becomes excessively low. Now you can prevent dust from being sucked by the vacuum cleaner!

[0045] Then, when the work of discharging the dust accumulated in the dust box 11 from the dust box 11 and sucking it into the cleaner is finished, the operation of the cleaner is stopped, and the nozzle 20 of the cleaner is inserted into the nozzle inlet 13 Extract from. As a result, the suction force of the vacuum cleaner does not act on the inner valve 16, so the inner valve 16 is closed. Moreover, since the force which pushes up the opening / closing lid 14 by the nozzle 20 of the vacuum cleaner does not act, the opening / closing lid 14 is closed by its own weight. The dust box 11 provided in the air conditioner 1 of the present embodiment is detachably provided on the side surface of the casing 2 (here, the side plate 26), and is detachably attached to the main body 91 of the cleaning mechanism 9. Therefore, it is also possible to remove the dust box 11 from the side plate 26 of the casing 2 and the main body 91 of the cleaning mechanism 9 and discharge the accumulated dust without using a vacuum cleaner.

[0046] (5) Features of the air conditioner of the present embodiment

The air conditioner 1, particularly the filter 5, the cleaning mechanism 9 and the dust box 11 of the present embodiment have the following characteristics.

(A) In the air conditioner 1 of the present embodiment, the filter 5 has a structure having a frame member 51 and a filter member 52 that is held in a meandering manner by the frame member 51 and can be circulated. Dust collected by the member 52 during air-conditioning operation is removed from the filter member 52. Since the cleaning mechanism 9 is provided, dust is removed from the filter 5 provided at the inlet 21a of the casing 2 without removing the filter 5. The removed dust can be stored in the dust box 11. As a result, in the duct-type air conditioner 1, the labor required for cleaning the filter 5 provided in the suction port 21a can be reduced.

[0047] Further, since the dust box 11 is provided on the side surface of the casing 2 (here, the side plate 26), a flow of directional air from the inlet 21a to the outlet 22a (that is, air in the air flow path 2a). ) Is hindered. In addition, the dust box 11 is provided on the side surface of the casing 2 (here, the side plate 26) provided with a casing lid 26a that can be opened when inspecting equipment such as the heat exchanger 3 and the blower fan 4 accommodated in the casing 2. ), The dust box 11 can be easily accessed by opening the inspection port U1 of the ceiling U!

(B)

In the air conditioner 1 of the present embodiment, since the nozzle insertion port 13 into which the nozzle 20 of the vacuum cleaner can be inserted is formed downward in the dust box 11, the inspection port U1 provided in the ceiling U The dust accumulated in the dust box 11 can be sucked into the vacuum cleaner from the dust box 11 and discharged by a simple operation of opening the nozzle 20 and inserting the nozzle 20 of the vacuum cleaner into the nozzle insertion port 13.

[0048] (C)

In the air conditioner 1 of the present embodiment, the opening / closing lid 14 that is opened by inserting the nozzle 20 of the vacuum cleaner into the nozzle insertion port 13 is provided, so that the dust collected in the dust box 11 is sucked by the vacuum cleaner. Until the work is performed, the dust accumulated in the dust box 11 by the cleaning mechanism 9 can be prevented from scattering from the nozzle insertion port 13.

In addition, since the opening / closing lid 14 opens upward, the dust accumulated in the dust box 11 can be prevented from spilling down when the opening / closing lid 14 is opened.

The open / close lid 14 can be removed by removing the nozzle 20 of the vacuum cleaner from the nozzle inlet 13. It is getting closer. Here, the opening / closing lid 14 is closed by its own weight. Thereby, in the air conditioning apparatus 1 of the present embodiment, forgetting to close the open / close lid 14 can be prevented.

[0049] In the air conditioner 1 of the present embodiment, the dust box 11 is provided with the inner valve 16 made of a material (for example, soft rubber or rubber) that can be elastically deformed by the suction force of the vacuum cleaner. The dust collected in the dust box 11 by the cleaning mechanism 9 can be prevented from spilling from the nozzle insertion opening 13 and the dust collected in the dust box 11 is sucked into the vacuum cleaner from the dust box 11 and discharged. Work can be done easily. In the air conditioner 1 of the present embodiment, a plurality of air holes 17a are formed in the second wall portion 17 facing the first wall portion 12 facing the nozzle insertion port 13, and the nozzle 20 of the vacuum cleaner is provided. When the dust is inserted into the nozzle insertion port 13 and sucked into the vacuum cleaner and discharged, the air can be taken in from the outside of the dust box 11 through the air holes 17a. The internal pressure becomes extremely low, and dust can be prevented from becoming difficult to be sucked into the vacuum cleaner.

[0050] Since these air holes 17a are substantially circular with a diameter of 5 mm or less, the nozzle of the vacuum cleaner is inserted into the nozzle insertion port 13 to suck dust from the dust box 11 into the vacuum cleaner. When discharging, the external force of the dust box 11 can be sufficiently taken in through the air hole 17a, and the dust accumulated in the dust box 11 through the air hole 17a is prevented from scattering outside the dust box 11 as much as possible. Can do.

(D)

In the air conditioner 1 of the present embodiment, since the dust box 11 is detachably provided in the casing 2, the dust box 11 in which dust has accumulated can be removed from the casing 2 and the dust in the dust box 11 can be discharged.

(6) Modification 1

In the air conditioner 1 that is effective in the above-described embodiment, the dust box 11 is a side surface (here, the side plate 26) provided with a casing lid 26a that can be opened when inspecting equipment accommodated in the casing 2. Although it is provided on the side of this side that is not the casing lid 26a, as shown in Fig. 7, two sets are installed side by side in the insertion direction of the nozzle 20 of the vacuum cleaner. You may make it.

[0051] In the air conditioner 1 that is effective in this modification, the dust box 11 is provided integrally with the casing lid 26a, so that the heat exchanger 3 and the blower fan 4 accommodated in the casing 2 are inspected. In doing so, the dust box 11 can be removed together with the casing lid 26a.

(7) Modification 2

In the air conditioner 1 according to the above-described embodiment and Modification 1, the force at which the nozzle insertion port 13 of the dust box 11 is formed downwards. As shown in FIGS. 8 and 9, the nozzle insertion port 13 It may be formed horizontally.

More specifically, the dust box 11 that works in this modification is connected to the main body 91 of the cleaning mechanism 9 and is wiped off by the contact part 93, as in the above-described embodiment and modification 1. A container that collects dust. In this modification, the dust box 11 is provided on the side surface of the casing 2 (specifically, the side plate 26).

[0052] The dust box 11 is a substantially rectangular tube-shaped container in the present embodiment, and a nozzle in which the nozzle 20 of the vacuum cleaner can be inserted into the first wall portion 12 constituting one side surface thereof. The insertion port 13 is formed downward. The nozzle insertion opening 13 is provided with an opening / closing lid 14 that opens when the nozzle 20 of the vacuum cleaner is inserted and closes when the nozzle 20 of the vacuum cleaner is pulled out. The opening / closing lid 14 is a plate-like member that is pivotally supported by the first wall portion 12 of the dust box 11 so that it can be opened / closed in the vertical direction, unlike the opening / closing lid 14 of the first embodiment and the first modification. By inserting the nozzle 20 of the vacuum cleaner into the nozzle insertion port 13 also with a lateral force, the opening / closing lid 14 is pushed upward by the tip of the nozzle 20 of the vacuum cleaner and opens, and the inclined surface 13a of the nozzle insertion port 13 is opened. By removing the nozzle 20 of the vacuum cleaner from the nozzle insertion port 13 in the direction opposite to the insertion direction, the force pushed upward by the tip of the nozzle 20 of the vacuum cleaner is released, and the open / close lid 14 is closed by its own weight, and the nozzle It abuts against a stopper portion 15 disposed on the side of the opening / closing lid 14 of the insertion port 13. The stopper portion 15 is formed at the side end portion of the nozzle insertion port 13 so as to fit into the inner surface of the nozzle of the vacuum cleaner. Also, the dust box 11 is provided with an inner valve 16 that also has a material force that can be elastically deformed by the suction force of the vacuum cleaner. The inner valve 16 is located inside the opening / closing lid 14 (that is, the direction in which the nozzle 20 of the vacuum cleaner is inserted). Side). As the material of the inner valve 16, soft rubber or rubber can be used. In addition, the second wall portion 17 that constitutes the other side surface of the dust box 11 and is disposed so as to face the first wall portion 12 has a plurality of portions that communicate with the outside of the casing 2 (that is, the ceiling space S). Air holes 17a are formed. Here, these air holes 17a are substantially circular with a diameter of 5 mm or less. Further, the upper portion of the third wall portion 18 constituting the side surface of the dust box 11 and in contact with the first wall portion 12 and the second wall portion 17 is the main body portion 91 of the cleaning mechanism 9 (in this modification, the second wall portion 17), the dust removed by the contact portion 93 (not shown in FIG. 9) of the cleaning mechanism 9 can be introduced.

[0053] In the air conditioner 1 according to this modified example, as with the air conditioner 1 according to the first embodiment and the modified example 1, the inspection port U1 provided in the ceiling U is opened and the vacuum cleaner 1 By a simple operation of inserting the nozzle 20 into the nozzle insertion port 13, the dust accumulated in the dust box 11 can be sucked out of the dust box 11 and discharged.

(8) Modification 3

In the air conditioner 1 according to the above-described embodiment and modification examples 1 and 2, the opening / closing lid 14 is provided at the nozzle insertion port 13 of the dust box 11 and is aligned in the insertion direction of the nozzle 20 of the vacuum cleaner. Two may be provided. For example, taking the case where the nozzle insertion port 13 is formed on the lower surface of the dust box 11 as an example, the opening / closing lid 114 can be arranged below the opening / closing lid 14 as shown in FIG. Here, the opening / closing lid 114 disposed on the lower side of the opening / closing lid 14 is formed with a projection 114a that contacts the lower surface of the opening / closing lid 14, and the nozzle 20 of the vacuum cleaner is also inserted into the opening / closing lid 114 so that the opening / closing lid 114 is attached. At the same time, when the cover is pushed upward, the lower surface of the opening / closing lid 14 can be pushed and opened by the projection 114a.

[0054] In the air conditioner 1 that is effective in this modification, the opening / closing lids 14 and 114 are provided side by side in the insertion direction of the nozzle 20 of the vacuum cleaner, and therefore the cleaning mechanism 9 causes the dust box 11 to The effect of preventing the accumulated dust from spilling from the nozzle insertion opening 13 can be further improved.

(9) Modification 4

In the air conditioner 1 according to the above-described embodiment and Modifications 1 to 3, the second wall portion 17 constituting the upper surface of the dust box 11 has a plurality of air holes 17a communicating with the outside of the casing 2. Although formed, instead of forming the plurality of air holes 17a in the second wall portion 17, or forming the plurality of air holes 17a in the second wall portion 17 and constituting the side surface of the dust box 11. A plurality of air holes 18 a communicating with the outside of the casing 2 may be formed in the third wall portion 18.

For example, in the case where the nozzle insertion port 13 is formed on the lower surface of the dust box 11 and one opening / closing lid 14 is provided, as shown in FIG. 11 or FIG. 12, the second wall portion Instead of forming a plurality of air holes 17a in 17 or forming a plurality of air holes 17a in the second wall part 17 and forming the casing 2 in the third wall part 18 constituting the side surface of the dust box 11. A plurality of air holes 18a communicating with the outside can be formed. In this case, the plurality of air holes 18a are arranged so that the intermediate position force between the first wall portion 12 and the second wall portion 17 is also at the position on the second wall portion 17 side (that is, the first wall downward from the inner surface of the second wall portion 17). The distance between the inner surface of the portion 12 and the inner surface of the second wall portion 17 is a half of the distance h). In addition, these air holes 18a are substantially circular with a diameter of 5 mm or less, as in the above-described embodiment and Modification 1.

In the air conditioner 1 that is effective in the present modification, a plurality of air holes 18a are formed in the third wall portion 18 that contacts the first wall portion 12 facing the nozzle insertion port 13, and the nozzle of the vacuum cleaner When inserting 20 into the nozzle insertion port 13 and sucking and discharging dust from the dust box 11 into the vacuum cleaner, air can be taken in from the outside of the dust box 11 through the air hole 18a. The pressure in the dust box 11 becomes extremely low, and dust can be prevented from being sucked by the vacuum cleaner. Since the air hole 18a is formed from the intermediate position between the first wall portion 12 and the second wall portion 17 to the position on the second wall portion 17 side, the nozzle 20 of the vacuum cleaner is inserted into the nozzle. When the dust inside the dust box 11 is sucked into the vacuum cleaner 13 and sucked out by the vacuum cleaner, the dust collected in the dust box 11 is less likely to hinder the operation of taking air from the outside of the dust box 11.

[0056] Further, in the case where the nozzle insertion port 13 is formed on the side surface of the dust box 11 and one opening / closing lid 14 is provided as an example, as shown in FIG. In place of forming a plurality of air holes 17a in 17 or forming a plurality of air holes 17a in the second wall part 17 and surrounding the first and second wall parts 12 and 17 of the dust box 11. A plurality of air holes 18a communicating with the outside of the casing 2 may be formed in the third wall portion 18 constituting the surface. it can. Here, the plurality of air holes 18a are intermediate positional forces between the portion constituting the upper surface of the third wall portion 18 and the portion constituting the lower surface (ie, the upper surface side of the third wall portion 18). From the inner surface of the portion to the half of the distance h between the inner surface of the portion constituting the upper surface of the third wall portion 18 and the inner surface of the portion constituting the lower surface of the third wall portion 18). These air holes 18a are substantially circular with a diameter of 5 mm or less, as in the above-described embodiment and Modification 1.

[0057] In the air conditioner 1 that is effective in the present modification, a plurality of air holes 18a are formed in the third wall portion 18 in contact with the first wall portion 12 facing the nozzle insertion port 13, and cleaning is performed. When the machine nozzle 20 is inserted into the nozzle insertion port 13 and dust is sucked into and discharged from the dust box 11, the air can be introduced from the outside of the dust box 11 through the air hole 18a. Therefore, the pressure in the dust box 11 becomes extremely low, and dust can be prevented from being sucked by the vacuum cleaner. Since the air hole 18a is formed at a position on the upper surface side between the portion constituting the upper surface of the third wall portion 18 and the portion constituting the lower surface, the nozzle 20 of the cleaner is inserted into the nozzle. When the dust is inserted into the opening 13 and sucked into and discharged from the dust box 11 by the vacuum cleaner, the operation of taking air from the outside of the dust box 11 is hindered by the dust accumulated in the dust box 11.

[0058] (10) Modification 5

In the air conditioner 1 according to the above-described embodiment and modification examples 1 to 4, the air holes 17a and 18a are formed in the dust box 11, and the dust box 11 is communicated with the outside of the casing 2, so that the nozzle 20 of the vacuum cleaner is provided. When dust is sucked into and discharged from the dust box 11 by inserting it into the nozzle insertion port 13, the pressure inside the dust box 11 becomes extremely low, preventing dust from becoming difficult to be sucked into the vacuum cleaner. However, the air holes 17a and 18a may be formed so as to communicate with the suction flow path 2b. For example, when the air hole 18a is formed in the third wall portion 18 of the dust box 11 according to the modification 4 (see FIG. 11), as shown in FIG. 14, the suction of the third wall portion 18 is performed. By forming the air hole 18a at a position facing the flow path 2b, the dust box 11 and the suction flow path 2b can be communicated with each other.

[0059] In the air conditioner 1 that is effective in the present modification, an air hole 18a communicating with the suction flow path 2a is formed at a position facing the suction flow path 2b of the third wall portion 18, and the nozzle of the vacuum cleaner 20 nozzle Since the air can be taken in from the outside of the dust box 11 through the air holes 19a when the dust is sucked into the vacuum cleaner 11 and discharged from the inside of the dust box 11 through the air inlet 19a. As in Examples 1 to 4, the pressure in the dust box 11 becomes extremely low, and dust can be prevented from being sucked by the vacuum cleaner.

Moreover, since these air holes 18a communicate with the suction flow path 2b, the inside of the dust box 11 can be made negative pressure by the operation of the blower fan 4, thereby compressing the dust in the dust box 11. And can be stored in the dust box 11 in a compact manner.

(11) Modification 6

In the air conditioning apparatus 1 according to the above-described embodiments and modifications 1 to 5, the force that the dust box 11 is provided on the outer surface (that is, outside the casing 2) of the side surface of the casing 2 (specifically, the side plate 26) 2 may be provided. For example, in the case of the horizontally long dust box 11 (see FIG. 9) according to the modification 2, as shown in FIGS. 16 and 17, the dust box 11 is placed on the side surface of the casing 2 (specifically, the side plate 26). It is possible to pass through the lower plate 24 by providing the nozzle insertion port 13 downwardly. Although not shown here, the nozzle insertion port 13 may be provided horizontally so as not to face downward, and the side plate 26 may be penetrated. A plurality of air holes 18a are formed in the third wall portion 18 of the dust bot 11 of the present modification.

Also in the air conditioner 1 which is effective in this modification, the same effects as those of the above-described embodiment and Modifications 1 to 4 can be obtained.

In the dust box 11 of this modification, the air hole 18a corresponds to the portion of the space in the dust box 11 that is closer to the cleaning mechanism 9 (here, the portion closer to the cleaning mechanism 9 of the third wall portion 18). The partial force is disposed on the upstream side of the portion close to the nozzle insertion port 13 in the space in the dust box 11. In the dust box 11 near the nozzle insertion port 13, dust removed from the filter 5 by the cleaning mechanism 9 is mainly stored. 2a, by placing the blower fan 4 in operation, the inside of the dust box 11 can be made negative pressure by the operation of the blower fan 4, thereby compressing the dust in the dust box 11 and storing it in the dust box 11 in a compact manner. Now that I can do it! [0061] (12) Modification 7

In the air conditioner 1 according to the above-described embodiments and modifications 1 to 6, the force that the dust box 11 is provided in the casing 2 (specifically, the side plate 26), and the dust box 11 is not provided in the casing 2. Also good. For example, taking the dust box 11 (see FIG. 9) according to the above-described modification 2 as an example, as shown in FIGS. 18 and 19, the dust box 11 is cased 2 (specifically, the side plate 26) and cleaned. It can be removed from the mechanism 9 and provided at or near the inspection port U1 of the ceiling surface U, and the connection between the cleaning mechanism 9 and the dust box 11 can be connected by a dust introduction hose. Also, the dust box 11 has air holes 17a so that air can be taken into the outside of the dust box 11 (that is, the space behind the ceiling S) through the air holes 17a!

[0062] In the air conditioner 1 that is effective in the present modification, the dust box 11 can be removed from the casing 2, and the dust force that is removed from the filter 5 by the cleaning mechanism 9 is introduced via the dust introduction hose 61. The dust box 11 can be arranged at the inspection port U1 of the ceiling U or in the vicinity thereof, and the work of inserting the nozzle 20 of the vacuum cleaner into the nozzle insertion port can be easily performed. it can. Similarly to the above-described embodiment and Modifications 1 to 4, when the nozzle 20 of the vacuum cleaner is inserted into the nozzle insertion port 13 and dust is sucked into the vacuum cleaner from the dust box 11 and discharged, Since air can be taken in from the outside of the dust box 11 through 17a, the pressure in the dust box 11 becomes extremely low, and dust can be prevented from being sucked by the vacuum cleaner.

(13) Modification 8

In the air conditioner 1 according to the above-described embodiment and modifications 1 to 5, the dust box 11 is provided in the casing 2 (specifically, the side plate 26), the inspection port U1 is opened, and the nozzle of the dust box 11 is opened. Force that allows the nozzle 20 of the vacuum cleaner to be inserted into the insertion port 13 A hose that extends the nozzle insertion port 13 of the dust box 11 to the inspection port U1 or the vicinity thereof may be provided. For example, in the case of the dust box 11 (see FIG. 6) that is effective in the above-described embodiment, as shown in FIG. 20 and FIG. 21, the dust accumulated inside the nozzle insertion port 13 of the dust box 11 is applied to the ceiling U. Connect the dust outlet hose 71 to lead to the provided inspection port U1, and connect the nozzle 2 of the vacuum cleaner to the tip of the dust outlet hose 71 on the inspection port side. A nozzle insertion port 73 into which 0 can be inserted can be formed. Here, the tip of the dust outlet hose 71 on the dust box 11 side has the same shape as the nozzle 20 of the vacuum cleaner, and is inserted into the nozzle insertion port 13 in the same manner as when the nozzle 20 of the vacuum cleaner is inserted. Yes. Further, the structure of the tip of the dust outlet hose 71 on the inspection port side is the same as the structure of the nozzle insertion port 13 of the dust box 11 and the vicinity thereof (however, in FIG. The reference numerals 72 to 76 are used in place of the nozzle insertion port 13 of the dust box 11 and the reference numerals 12 to 16 indicating the vicinity thereof as the reference numerals in the vicinity.

[0063] In the air conditioner 1 that is effective in this modified example, a dust outlet hose 71 is connected to the dust box 11 for leading the dust accumulated in the dust box 11 to the inspection port U1 provided in the ceiling U. The nozzle insertion port 73 into which the nozzle 20 of the vacuum cleaner can be inserted is formed at the tip of the inspection port side of the dust outlet hose 71, and the nozzle insertion port 73 is connected to the ceiling U. Since it can be arranged at or near the inspection port U1, the operation of inserting the nozzle 20 of the vacuum cleaner into the nozzle insertion port 73 can be easily performed.

(14) Other embodiments

As mentioned above, although embodiment of this invention was described based on drawing, specific structure can be changed in the range which does not deviate from the summary of this invention which is not restricted to these embodiment.

For example, in the above-described embodiment and modification, the filtering member 52 constituting the filter 5 is self-propelled, and the dust collected by the filtering member 52 is removed using the cleaning mechanism 9 installed in the vicinity of the dust box 11. Although the configuration that collects in the dust box 11 is adopted, the cleaning mechanism 9 may be self-propelled to remove dust from the filter 5, transport the removed dust to the dust box 11, and store in the dust box 11. ,.

Industrial applicability

By using the present invention, it is possible to reduce the labor required for cleaning the filter provided at the suction port in the duct-type air conditioner.

Claims

The scope of the claims

[1] A duct-type air conditioner that can be installed in a ceiling space,

A casing (2) formed with a duct-connected outlet (22a) and a duct-connected inlet (21a);

A filter (4) provided in the suction port;

A cleaning mechanism (9) for removing the dust collected by the filter, and a dust box (11) for storing the dust removed by the cleaning mechanism;

Air conditioner (1) with

[2] The air conditioner (1) according to claim 1, wherein the dust box (11) is provided on a side surface of the casing (2).

[3] On the side surface of the casing (2), there is provided a casing lid (26a) that can be opened when checking the equipment housed in the casing.

The air conditioner (1) according to claim 2, wherein the dust box (11) is provided on a side surface of the casing provided with the casing lid.

[4] The air conditioner (1) according to claim 3, wherein the dust box (11) is provided integrally with the casing lid (26a).

[5] The dust box (11) according to any one of claims 1 to 4, wherein a nozzle insertion opening (13) into which a nozzle of a vacuum cleaner can be inserted is formed downward or horizontally. Air conditioner (1).

[6] The air conditioner (1) according to claim 5, wherein the nozzle insertion opening (13) is provided with an open / close lid (14, 114) that is opened by inserting a nozzle of a cleaner.

[7] The air conditioner (1) according to claim 6, wherein the opening / closing lid (14, 114) is closed by extracting a nozzle of a vacuum cleaner with the nozzle insertion port (13).

[8] The air conditioner (D o) according to claim 6 or 7, wherein the opening / closing lid (14, 114) opens upward.

[9] The air conditioner (1) according to any one of claims 5 to 8, wherein the opening / closing lid (14, 114) is closed by its own weight.

[10] Two opening / closing lids (14, 114) are provided side by side in the insertion direction of the nozzle of the vacuum cleaner. The air conditioner (1) according to any one of claims 5 to 9.

[11] The air conditioner according to any one of claims 5 to 5, wherein the dust box (11) is provided with a valve (16) made of a material that can be elastically deformed by a suction force of a vacuum cleaner. 1

) o

[12] The dust box (11) includes a first wall (12) facing the nozzle insertion port (13), a second wall (17) facing the first wall, and the first A third wall portion (18) in contact with the wall portion,

The air conditioner (1) according to any one of claims 5 to 11, wherein a plurality of air holes (17a) are formed in the second wall portion.

[13] The dust box (11) includes a first wall (12) facing the nozzle insertion port (13), a second wall (17) facing the first wall, and the first A third wall portion (18) in contact with the wall portion,

The air conditioner (1) according to any one of claims 5 to 12, wherein a plurality of air holes (18a) are formed in the third wall portion.

[14] The air hole (18a) is formed at an intermediate position force between the first wall portion (12) and the second wall portion (18) at a position on the second wall portion side. The air conditioner (1) according to claim 13.

[15] The dust box (11) is disposed in the casing (2), and the suction port (

Air holes (17a, 18a) communicating with the air flow path (2a) from 21a) to the air outlet (22a) are formed, and the part where the air hole is formed is more than the part where dust is stored. The air conditioner (1) according to claim 1, wherein the air conditioner (1) is arranged on the upstream side.

[16] The casing (2) accommodates a blower fan (4) for sucking air into the casing through the suction port (21a) and air from the suction port to the blower fan. Suction passage (2b) is formed,

The dust box (11) is disposed outside the casing, and has an air hole communicating with the suction flow path.

The air conditioner (1) according to any one of claims 1 to 11.

[17] The dust box (11) can be removed from the casing (2), and the dust removed from the filter (4) by the cleaning mechanism (9) passes through the dust introduction hose (61). The air conditioner (1) according to any one of claims 5 to 14, wherein the air conditioner (1) is provided so as to be introduced as described above.

[18] The dust box (11) is connected to a dust outlet hose (71) for leading dust accumulated inside to an inspection port provided on the ceiling.

A nozzle insertion port (73) into which a nozzle of a vacuum cleaner can be inserted is formed at the tip of the inspection port side of the dust outlet hose!

The air conditioner (1) according to any one of claims 1 to 4.

[19] According to claims 1 to 3, wherein the dust box (11) is detachably provided on the casing (2)! The air conditioner (1) according to any one of the above.