JP7672055B2 - Indoor unit - Google Patents

Description

The present invention relates to an indoor unit.

Patent Document 1 discloses a technology in which an antibacterial agent unit has a storage section that stores an antibacterial agent, a fixing section that is integral with the storage section and extends horizontally, and a vertical section that is integral with the fixing section and extends downward, and the antibacterial agent unit is disposed near the suction port, and the storage section, fixing section, and vertical section sandwich the wall surface of the suction port to fix the antibacterial agent unit.

JP 2013-079790 A

The present disclosure provides an indoor unit that allows the antibacterial agent unit to be attached and detached, and improves the supportability of the antibacterial agent unit.

In order to achieve the above-mentioned object, the indoor unit of the present disclosure has a housing, a drain pan provided in the housing, and an air outlet formed in the drain pan, in which an antibacterial agent unit is removably arranged in a drain water passage of the drain pan near the air outlet, and the antibacterial agent unit includes a storage section for storing an antibacterial agent, and a mounting plate member, the storage section abuts against a wall surface of the air outlet of the drain pan, and when the storage section is attached to the drain pan, the mounting plate member is fixed to the bottom surface of the drain pan with the mounting plate member aligned along the wall surface of the air outlet and the bottom surface of the drain pan .

According to the present disclosure, the antibacterial agent unit can be attached without removing the decorative panel by inserting the antibacterial agent unit from below the panel side outlet and the drain pan side outlet, positioning the storage section inside the drain pan, and fixing the mounting plate member to the bottom surface of the housing with the mounting plate member aligned with the wall surface of the drain pan side outlet and the bottom surface of the housing.

FIG. 3 is a cross-sectional view showing the internal structure of the indoor unit according to the first embodiment. FIG. 1 is a perspective view of an indoor unit according to a first embodiment; FIG. 1 is a plan view of a drain pan according to a first embodiment, viewed from below; FIG. 3 is an enlarged view of a portion of FIG. FIG. 1 is a perspective view showing an antibacterial agent unit according to a first embodiment; FIG. 1 is an exploded perspective view showing an antibacterial agent unit according to a first embodiment. View from below of indoor unit when installing antibacterial agent unit Top view of the drain pan when installing the antibacterial agent unit FIG. 13 is a perspective view showing the antibacterial agent unit attached.

(Knowledge, etc. that is the basis of the invention)
At the time the inventors came up with the present disclosure, there was technology available that placed an antibacterial agent unit near the suction port and fixed the antibacterial agent unit by clamping the wall surface of the suction port using the storage section, fixing section, and vertical section.
However, it was discovered that the conventional technology of sandwiching the wall surface with the antibacterial material unit provided insufficient support for the antibacterial material unit, and the subject of the present disclosure was created to solve this problem.
In view of this, the present disclosure provides an indoor unit that allows the antibacterial agent unit to be detached and improves the supportability of the antibacterial agent unit.

Hereinafter, the embodiments will be described in detail with reference to the drawings. However, more detailed explanation than necessary may be omitted. For example, detailed explanation of already well-known matters or duplicate explanation of substantially the same configuration may be omitted. This is to avoid the following explanation becoming more redundant than necessary and to facilitate understanding by those skilled in the art.
It should be noted that the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

(Embodiment 1)
Hereinafter, the first embodiment will be described with reference to the drawings.
[1-1. Configuration]
[1-1-1. Overall configuration of indoor unit]
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
Fig. 1 is a cross-sectional view showing the internal structure of an indoor unit 10 of an air conditioner according to an embodiment of the present invention. Fig. 2 is a perspective view of the indoor unit 10.
In the following description, the terms "upper", "lower" and "inner" are used with respect to the indoor unit 10 installed on the ceiling. The space into which conditioned air is blown out is referred to as the conditioned room.

The indoor unit 10 is installed in a ceiling space 13 between a ceiling 11 of a building and a ceiling board 12 installed below the ceiling 11. The indoor unit 10 includes an indoor unit body 14 and a decorative panel 30 that covers a lower opening of the indoor unit body 14.
The indoor unit body 14 includes a generally box-shaped housing 15 with an opening on the bottom surface. Inside the housing 15, the indoor unit body 14 includes a polystyrene foam insulating member 16, an indoor heat exchanger 17, a blower 18, a drain pan 19 that receives drain water from the indoor heat exchanger 17, and a bell mouth 20 that straightens the air drawn into the blower 18.
Hanging brackets 21 are attached to corners of the outer surface of the housing 15. The indoor unit body 14 is installed in a suspended state from the ceiling 11 by connecting the hanging brackets 21 to hanging bolts 22 hanging down from the ceiling 11.

The decorative panel 30 is formed in a substantially rectangular plate shape in a plan view so as to cover the opening on the bottom surface of the indoor unit body 14 .
A panel-side suction port 31 that communicates with the bellmouth 20 is formed in the center of the decorative panel 30. An suction grille 32 that covers the panel-side suction port 31 is detachably attached to the decorative panel 30. A filter 33 for removing dust and the like from the air is provided on the indoor unit body 14 side of the suction grille 32.

Panel-side air outlets 34 for sending conditioned air to the conditioned room are formed at positions outside the panel-side intake port 31 of the decorative panel 30 and along each side of the outer periphery of the decorative panel 30. That is, the panel-side air outlets 34 are provided along each side of the decorative panel 30, which is substantially rectangular in plan view, and air is blown out from the panel-side air outlets 34 in four directions.
The panel-side air outlets 34 are each provided with a flap 35 (see FIG. 2) that can adjust the air outlet direction.

The heat insulating members 16 are provided on the inner surfaces of the side plates 15 a and the top plate 15 b of the housing 15 , and prevent condensation from occurring in the housing 15 .
The blower 18 is configured to include a fan motor 23 and a centrifugal fan 24. The fan motor 23 has a rotating shaft 23a extending downward, and the centrifugal fan 24 is fixed to the rotating shaft 23a. The fan motor 23 is disposed approximately in the center of the indoor unit 10 in a plan view, and is fixed to the top plate 15b of the housing 15.
The centrifugal fan 24 includes a disk-shaped main plate 24a fixed to the rotating shaft 23a, an annular shroud 24b disposed below the main plate 24a and substantially coaxially with the main plate 24a, and a plurality of blades 24c connecting the shroud 24b and the main plate 24a. The blades 24c are disposed at intervals in the circumferential direction of the main plate 24a.

The indoor heat exchanger 17 is formed by bending a plate-like heat exchanger into a substantially rectangular shape in a plan view so as to surround substantially the entire blower 18 from the side.
The indoor heat exchanger 17 functions as a refrigerant evaporator during cooling operation and as a refrigerant evaporator during heating operation. The indoor heat exchanger 17 is configured to exchange heat between the refrigerant and the indoor air drawn into the indoor unit body 14, thereby cooling the air in the air-conditioned room during cooling operation and heating the air in the room during heating operation.

Fig. 3 is a plan view of the drain pan of the indoor unit body 14 as viewed from below. Fig. 4 is an enlarged view of a portion of Fig. 3.
The drain pan 19 is disposed below the indoor heat exchanger 17 so as to be able to receive drain water generated in the indoor heat exchanger 17. The drain pan 19 is made of polystyrene foam.

As shown in FIG. 3, the drain pan 19 is formed in a substantially rectangular plate shape so as to cover substantially the entire opening on the bottom surface of the housing 15. The drain pan 19 has a drain pan side suction port 25 in the center when viewed from above, through which air drawn into the blower 18 passes. The drain pan 19 also has a drain pan side outlet 26, located outside the drain pan side suction port 25 and overlapping with each panel side outlet 34, through which air blown out to the conditioned room passes.

Furthermore, the drain pan 19 includes a heat exchanger housing 27 that houses the lower end of the indoor heat exchanger 17. The heat exchanger housing 27 is formed between the drain pan side outlet 26 and the drain pan side inlet 25, and is formed in the shape of a waterway that goes around the outer periphery of the drain pan 19.
The drain pan 19 includes a drain water passage 27b formed outside the heat exchanger accommodating portion 27 and one step lower than the heat exchanger accommodating portion 27. The drain water passage 27b is located below the lower surface of the outer periphery of the indoor heat exchanger 17.
In the indoor unit 10, a drain pump (not shown) for discharging drain water is installed on the drain water passage 27b.

In a plan view, the drain water passage 27b is formed in a substantially rectangular shape along the underside of the indoor heat exchanger 17. The drain water passage 27b has a lowest point 29L at one of its four corners, where the position of the drain water passage 27b is the lowest. The suction position 28 of the drain pump is disposed at the lowest point 29L.
The drain water is stored at the lowest point of 29 L, and is sucked out by the drain pump and discharged to the outside.

A blower chamber 36 in which the blower 18 is housed is formed inside the housing 15 by being surrounded by the indoor heat exchanger 17, the drain pan 19, and the bell mouth 20. In addition, an air passage 37 through which the air that has been heat exchanged in the indoor heat exchanger 17 passes is formed between the outer surface of the indoor heat exchanger 17 and the insulating member 16 of the side plate 15a of the housing 15.
When the indoor unit 10 is operating, the rotation of the blower 18 draws air from the conditioned room into the blower chamber 36 through the panel-side suction port 31 (Fig. 1) and the bellmouth 20. The air in the blower chamber 36 is then blown out by the blower 18, undergoes heat exchange as it passes through the indoor heat exchanger 17, flows into the air passage 37, and is blown out from the panel-side outlet 34 (Fig. 1) into the conditioned room. The drain pan-side outlet section 26 constitutes part of the air passage 37.

[1-1-2. Configuration of antibacterial agent unit]
Fig. 5 is a perspective view showing the antibacterial agent unit. Fig. 6 is an exploded perspective view showing the antibacterial agent unit. Fig. 7 is a view from below the indoor unit when the antibacterial agent unit is to be installed. Fig. 8 is a view from above the drain pan 19 when the antibacterial agent unit is to be installed. Fig. 9 is a perspective view showing the antibacterial agent unit installed.

As shown in Figures 3 and 4, an antibacterial agent unit 40 is installed near the lowest point 29L of the drain pan 19. More specifically, the antibacterial agent unit 40 is disposed near the lowest point 29L of the drain pan side outlet section 26, which is the drain water passage 27b portion that is continuous with the lowest point 29L of the drain pan 19.

5 to 7, the antibacterial agent unit 40 includes a storage section 41 having a generally rectangular box shape with an open top, and a lid member 50 that closes the top of the storage section 41. The storage section 41 is formed in a generally rectangular box shape with an open top, and an antibacterial agent (not shown), such as silver ions, is stored inside the storage section 41.
A through hole 42 is formed in a corner of the bottom surface of the accommodation portion 41 .
Locking claws 43 are formed on both upper sides of the storage section 41 so as to protrude laterally.
A guide protrusion 44 is formed on one surface of the accommodation portion 41. The guide protrusion 44 is formed in a tapered shape such that the width dimension decreases downward.

The lid member 50 includes a lid portion 51 that covers the upper surface of the storage portion 41. Fixing flanges 52 extending downward are integrally provided on both sides of the lid portion 51, and engagement holes 53 that engage with the locking claws 43 of the storage portion 41 are formed in the fixing flanges 52.
An attachment plate member 54 is provided on the upper surface of the lid portion 51, extending upward and then downward at a predetermined distance from the lid portion 51.
The cover portion 51 and the mounting plate member 54 are each formed from a resin material.

A screw hole 55 is formed in the lower end portion of the mounting plate member 54. A knob portion 56 is formed to protrude from one surface of the mounting plate member 54.
Then, with a specified antibacterial agent stored in the storage section 41, the lid member 50 is attached to the upper surface of the storage section 41, and the engagement hole 53 of the lid member 50 is engaged with the locking claw 43 of the storage section 41, thereby fixing the lid member 50 to the storage section 41.

In this embodiment, a plurality of projections and recesses 57 are formed on the upper surface and the side wall surface of the mounting plate member 54. A groove formed by the plurality of projections and recesses 57 is formed so as to extend in the length direction of the mounting plate member 54.
By forming the multiple projections and recesses 57 in this manner, the position of the mounting plate member 54 can be easily grasped when the worker inserts his or her hand into the panel air outlet 34 to remove the antibacterial agent unit 40. In addition, the multiple projections and recesses 57 can hold condensed water, so that the condensed water adhering to the mounting plate member 54 can be prevented from dripping.

8 , a support portion 60 is provided at the attachment position of the antibacterial agent unit 40 on the drain pan 19. The support portion 60 abuts against one surface of the storage portion 41 of the antibacterial agent unit 40, and holds the storage portion 41 between the support portion 60 and the wall surface of the drain pan-side blowing portion 26 of the drain pan 19.
The support portion 60 is formed with an engagement notch 61 into which the guide protrusion 44 of the accommodation portion 41 is engaged. The engagement notch 61 is formed in a tapered shape such that the width dimension of the engagement notch 61 decreases downward so as to match the guide protrusion 44.

Further, at a position corresponding to the support portion 60 on the upper portion of the wall surface of the drain pan side blowing portion 26, a first recess 62 is formed in which the mounting plate member 54 of the antibacterial agent unit 40 is positioned.
Further, a second recess 65 that is continuous with the first recess 62 is formed on the inner wall surface of the drain pan side blowing portion 26 .
The depth dimension of the first recess 62 and the second recess 65 is formed to be approximately the same as the thickness dimension of the support part 60, and when the support part 60 is installed in the first recess 62 and the second recess 65, the wall surface of the drain pan side blowing part 26 is configured to be flush with the height.
Furthermore, a screw recess 63 is formed on the underside of the drain pan side blowing portion 26 of the drain pan 19, into which a fixing portion formed by bending the lower end portion of the mounting plate member 54 engages.

The antibacterial agent unit 40 is provided between the wall surface of the drain pan side blowing section 26 and the support section 60, and the width dimension of the drain water passage 27b adjacent to the lowest point 29L is formed to be approximately identical to the width dimensions of the support section 60 and the drain pan side blowing section 26.
Furthermore, the drain pan further includes a weir portion 64 of a predetermined height that connects the support portion and the installation portion of the indoor heat exchanger.
As a result, when the drain water flows through the drain water passage 27b of the drain pan 19 and reaches the lowest point 29L, it is guided by the weir portion 64 to the antibacterial unit 40, so that it is configured to always pass through the installation location of the antibacterial unit 40.
The antibacterial agent unit 40 is installed in the drain pan 19 so that there is a small gap between the bottom surface of the drain water passage 27 b of the drain pan 19 .

[1-2 Action]
Next, the operation of this embodiment will be described.
[1-2-1 Installation of antibacterial agent unit]
First, the installation of the antibacterial agent unit 40 will be described.
As shown in FIG. 7 , the antibacterial agent unit 40 is inserted from below the panel-side air outlet 34 .
The worker holds the knob portion 56 with a tool such as pliers, and uses the screw-fastening recess 63 and the first recess 62 as landmarks to insert the antibacterial unit 40 so that the storage portion 41 of the antibacterial unit 40 is positioned inside the wall surface of the drain pan side blowing portion 26.

When the storage section 41 of the antibacterial agent unit 40 climbs over the wall surface of the drain pan side blowing section 26, the support section 60 is provided on the drain pan 19, so that the guide protrusion 44 of the storage section 41 is inserted into the engagement notch 61 of the support section 60, as shown in FIG. 9. Then, by moving the antibacterial agent unit 40 downward, the guide protrusion 44 is guided into the engagement notch 61 of the support section 60, so that the operator can position the storage section 41 of the antibacterial agent unit 40 in a predetermined position even if the inside of the wall surface of the drain pan side blowing section 26 is not visible.

Thereafter, the lower portion of the mounting plate member 54 is bent along the side wall of the drain pan-side blowing portion 26, and the lower end portion of the mounting plate member 54 is fixed to the screw fastening recess 63 by screwing the screw into the screw hole 55. This completes the installation of the antibacterial agent unit 40.
Furthermore, when removing the antibacterial unit 40, the antibacterial unit 40 can be easily removed by removing the screws, lifting the antibacterial unit 40 upward, and allowing the storage section 41 of the antibacterial unit 40 to overcome the wall surface of the drain pan side blowing section 26.

[1-2-2 Indoor unit operation]
When the indoor unit is operated, the blower is rotationally driven, and air blown by the blower is sucked into the blower chamber 36 .
The sucked air passes through the indoor heat exchanger 17, undergoes heat exchange therein, and is then blown out into the room to be conditioned through the air passage 37 and the drain pan side blowing section 26.
When condensation occurs due to heat exchange by the indoor heat exchanger, the condensed water drips into the drain water passage 27b of the drain pan 19 as drain water.

The drain water that flows into the drain water passage 27b flows toward the lowest point 29L. In this case, the antibacterial unit 40 is provided between the wall surface of the drain pan side blowing section 26 and the support portion 60, and the width dimension of the drain water passage 27b adjacent to the lowest point 29L is formed to be approximately the same as the width dimension of the support portion 60 and the wall surface of the drain pan side blowing section 26, and the drain water is guided to the antibacterial unit 40 by the weir portion 64, so that the drain water flowing toward the lowest point 29L always passes through the installation portion of the antibacterial unit 40.
Drain water added to the installation portion of the antibacterial unit 40 flows into the inside of the storage portion 41 through the through hole 42 of the storage portion 41, is antibacterialized by coming into contact with the antibacterial agent, and is stored at the lowest point 29L of the drain pan 19.
When a predetermined amount of drain water accumulates at the predetermined lowest point 29L, the drain water pump is driven to discharge the drain water to the outside of the indoor unit.

[1-3. Effects, etc.]
As described above, in this embodiment, the antibacterial agent unit 40 is removably arranged in the drain water passage 27b of the drain pan 19 near the drain pan side blowing section 26 (panel side blowing outlet 34), and the antibacterial agent unit 40 comprises a storage section 41 for storing an antibacterial agent, and a cover member 50 having a mounting plate member 54, and the storage section 41 abuts against the wall surface of the drain pan side blowing section 26 of the drain pan 19, and when the storage section 41 is attached to the drain pan 19, the mounting plate member 54 is fixed to the bottom surface of the housing with the mounting plate member 54 aligned along the wall surface of the drain pan side blowing section 26 and the bottom surface of the housing.
According to this, the antibacterial agent unit 40 is inserted from below the panel side outlet 34 and the drain pan side outlet section 26, the storage section 41 is positioned inside the drain pan 19, and the mounting plate member 54 is fixed to the bottom surface of the housing with the mounting plate member 54 aligned with the wall surface of the drain pan side outlet section 26 and the bottom surface of the housing, thereby making it possible to install the antibacterial agent unit 40 without removing the decorative panel.

In addition, in this embodiment, a knob portion 56 is provided on the mounting plate member 54, and the knob portion 56 is provided at approximately the lower end portion of the wall surface of the drain pan side blowing portion 26 (panel side blowing port 34) with the mounting plate member 54 fixed to the bottom surface of the housing.
According to this, with the knob portion 56 held by a tool such as pliers, the antibacterial agent unit 40 can be easily attached from the panel-side outlet 34 and the drain pan-side outlet 26. Also, by providing the knob portion 56 at approximately the lower end of the wall surface of the drain pan-side outlet 26, the knob portion 56 can be easily held.

In addition, in this embodiment, a first recess 62 is formed in the upper part of the wall surface of the drain pan side outlet section 26 (panel side outlet 34), the mounting plate member 54 of the cover member 50 is positioned in the first recess 62, and the depth dimension of the first recess 62 is formed to be approximately the same as the thickness dimension of the mounting plate member 54.
According to this, the first recess 62 can be used to position the mounting plate member 54. Furthermore, when the mounting plate member 54 is installed in the first recess 62, the wall surface of the drain pan-side outlet portion 26 of the drain pan 19 becomes flush, so that the flow resistance of the air flowing through the panel-side outlet 34 can be suppressed.

In addition, in this embodiment, a second recess 65 is formed in the wall surface of the drain pan side outlet section 26 (panel side outlet 34), the mounting plate member 54 is arranged in the second recess 65, and the depth dimension of the second recess 65 is formed to be approximately the same as the thickness dimension of the mounting plate member 54.
According to this, the second recess 65 can be used to position the mounting plate member 54. Furthermore, when the mounting plate member 54 is installed in the second recess 65, the wall surface of the drain pan-side outlet portion 26 of the drain pan 19 becomes flush, so that the flow resistance of the air flowing through the panel-side outlet 34 can be suppressed.

In addition, in this embodiment, the drain pan 19 is provided with a support portion 60 that is arranged approximately parallel to the wall surface of the drain pan side outlet portion 26 (panel side outlet 34), and the support portion 60 is formed with an engagement notch 61 that is open at the top, and the storage portion 41 is formed with a guide protrusion 44 that engages with the engagement notch 61 when the antibacterial agent unit 40 is installed.
With this, the support portion 60 can support the antibacterial material unit in a direction approximately parallel to the wall surface of the drain pan-side outlet portion 26. In addition, the guide protrusions 44 of the antibacterial agent unit 40 can be engaged with the engagement notches 61 of the support portion 60, whereby the antibacterial agent unit 40 can be positioned.

In addition, in this embodiment, the guide protrusion 44 is formed in a tapered shape such that the width dimension decreases downward, and the engagement notch 61 is formed in a tapered shape such that the width dimension decreases downward to match the shape of the guide protrusion 44.
According to this, when the antibacterial agent unit 40 is inserted from below the drain pan side blowing section 26 to be installed, the tapered guide protrusion 44 is guided by the engagement notch 61 of the support section 60, and the antibacterial agent unit 40 can be positioned and installed even when the storage section 41 of the antibacterial agent unit 40 is not visible from the outside.

In this embodiment, the storage portion 41 is disposed at a predetermined distance from the bottom surface of the drain water passage 27b.
This makes it possible to prevent the flow of drain water from being obstructed when the drain water flows through the drain water passage 27b to the lowest point 29L.

Other Embodiments
As described above, the first embodiment has been described as an example of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can be applied to embodiments in which modifications, substitutions, additions, omissions, etc. are made. In addition, it is also possible to combine the components described in the first embodiment to create a new embodiment.
For example, in the above embodiment, the antibacterial agent unit 40 is provided in the drain pan side outlet portion 26, but it may be disposed near the suction port.
In the above embodiment, the antibacterial agent unit 40 has been described as having the mounting plate member 54 attached to the cover member 50 , but the mounting plate member 54 may be attached to the storage section 41 .

This disclosure is applicable to indoor units in which the antibacterial agent unit can be attached and detached without removing the decorative panel.

LIST OF SYMBOLS 10 Indoor unit 14 Indoor unit body 15 Housing 16 Insulation member 17 Indoor heat exchanger 18 Blower 19 Drain pan 23 Fan motor 24 Centrifugal fan 25 Panel side suction port 26 Drain pan side blowing section 26 Drain pan side blowing section 27 Heat exchanger housing section 27b Drain water passage 28 Drain pump suction position 29L Lowest point 30 Decorative panel 32 Grill 33 Filter 34 Panel side blowing port 35 Flap 36 Blower chamber 37 Air passage 40 Antibacterial agent unit 41 Housing section 42 Through hole 43 Locking claw 44 Guide protrusion 50 Lid member 51 Lid section 52 Fixing flange 53 Engagement hole 54 Mounting plate member 55 Screw hole 56 Knob portion 60 Support portion 62 First recess 63 Screw-fastening recess 64 Weir portion 65 Second recess

Claims (7)

An indoor unit having a housing, a drain pan provided in the housing, and an air outlet formed in the drain pan,
an antibacterial agent unit is detachably disposed in a drain water passage of the drain pan near the outlet;
The antibacterial agent unit includes a storage section that stores an antibacterial agent, and a mounting plate member.
The housing portion abuts against a wall surface of the air outlet of the drain pan,
the mounting plate member is fixed to the bottom surface of the drain pan in a state in which the mounting plate member is aligned along a wall surface of the air outlet and a bottom surface of the drain pan when the accommodation portion is attached to the drain pan . A knob portion is provided on the mounting plate member,
The indoor unit according to claim 1 , wherein the knob portion is provided at a substantially lower end portion of the wall surface of the air outlet with the mounting plate member fixed to a bottom surface of the drain pan . A first recess is formed in an upper portion of a wall surface of the air outlet of the drain pan,
The mounting plate member is disposed in the first recess,
The indoor unit according to claim 1 or 2, wherein a depth dimension of the first recess is formed to be substantially the same as a thickness dimension of the mounting plate member. A second recess is formed on an inner wall surface of the air outlet of the drain pan,
The mounting plate member is disposed in the second recess,
The indoor unit according to any one of claims 1 to 3, wherein a depth dimension of the second recess is formed to be substantially the same as a thickness dimension of the mounting plate member. The drain pan is provided with a support portion disposed substantially parallel to the wall surface of the air outlet,
The support portion is formed with an engagement notch that is open at the top,
The indoor unit according to any one of claims 1 to 4, wherein the accommodation portion is formed with a guide protrusion that is engaged with the engagement notch when the antibacterial agent unit is installed. The guide protrusion is formed in a tapered shape in which the width dimension decreases downward,
The indoor unit according to claim 5 , wherein the engagement notch is formed in a tapered shape such that a width dimension thereof decreases downward in accordance with a shape of the guide protrusion. The indoor unit according to any one of claims 1 to 6, wherein the storage portion is disposed at a predetermined distance from a bottom surface of the drain water passage.

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