Indoor equipment

Abstract

To provide indoor equipment to / from which an antibacterial agent unit is attachable / detachable and which improves the performance of supporting the antibacterial agent unit.SOLUTION: An antibacterial agent unit 40 is detachably arranged in a drain water passage 27b of a drain pan 19 near a drain pan side blow-out part 26. The antibacterial agent unit 40 includes a storage part 41 storing an antibacterial agent, and a mounting plate member 54. The storage part 41 abuts on the wall surface of the drain pan side blow-out part 26 of the drain pan 19, and fixes the mounting plate member 54 to the bottom surface of a casing in the state of setting the mounting plate member 54 along the wall surface of the drain pan side blow-out part 26 and the bottom surface of the casing when mounting the storage part 41 to the drain pan 19.SELECTED DRAWING: Figure 9

Description

Technical Field

[0001] The present invention relates to an indoor unit.

Background Art

[0002] Patent Document 1 discloses a technique in which an antibacterial agent unit has a housing portion for housing an antibacterial agent, a fixing portion provided integrally with the housing portion and extending horizontally, and a vertical portion provided integrally with the fixing portion and extending downward. The antibacterial agent unit is arranged near the suction port, and the antibacterial agent unit is fixed by sandwiching a wall surface at the suction port by the housing portion, the fixing portion, and the vertical portion.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present disclosure provides an indoor unit in which an antibacterial agent unit is detachable and the supportability of the antibacterial agent unit is improved.

Means for Solving the Problems

[0005] To achieve the above object, an indoor unit of the present disclosure includes a housing, a drain pan provided in the housing, and an air outlet formed in the drain pan. In the indoor unit, an antibacterial agent unit is detachably arranged in a drain water passage of the drain pan near the air outlet. The antibacterial agent unit includes a housing portion for housing an antibacterial agent and a mounting plate member. The housing portion abuts against a wall surface of the air outlet of the drain pan. When the housing portion is attached to the drain pan, the mounting plate member is fixed to the bottom surface of the housing while being along the wall surface of the air outlet and the bottom surface of the housing.

Effects of the Invention

[0006] According to the present disclosure, the antibacterial agent unit can be inserted from below the panel side air outlet and the drain pan side air outlet, the accommodating part can be positioned inside the drain pan, and the mounting plate member can be fixed to the bottom surface of the housing along the wall surface of the drain pan side air outlet, so that the antibacterial agent unit can be installed without removing the decorative panel.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

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Figure 5

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Figure 8

Figure 9

Modes for Carrying Out the Invention

[0008] (Knowledge and the like on which the invention is based) When the inventors arrived at the present disclosure, there was a technology in which the antibacterial agent unit was arranged near the suction port, and the antibacterial agent unit was fixed by sandwiching the wall surface between the accommodating part, the fixing part, and the vertical part. However, in the configuration of sandwiching the wall surface by the antibacterial material unit as in the conventional technology, it was found that the support of the antibacterial agent unit was insufficient, and in order to solve this problem, the subject matter of the present disclosure was constituted. Therefore, the present disclosure provides an indoor unit in which an antibacterial agent unit is detachable and the supportability of the antibacterial agent unit is improved.

[0009] Hereinafter, embodiments will be described in detail with reference to the drawings. However, a more detailed description than necessary may be omitted. For example, a detailed description of already well-known matters or a redundant description of substantially the same configuration may be omitted. This is to avoid making the following description overly redundant and to facilitate the understanding of those skilled in the art. Note 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.

[0010] (Embodiment 1) Hereinafter, Embodiment 1 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, up and down, inside and outside are described with reference to the indoor unit 10 installed on the ceiling. Also, the space from which the conditioned air is blown out is defined as the conditioned space.

[0011] 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 main body 14 and a decorative panel 30 that covers the lower opening of the indoor unit main body 14. The indoor unit main body 14 includes a substantially box-shaped housing 15 with a substantially entire lower surface open. Inside the housing 15, the indoor unit main body 14 includes a heat insulating member 16 made of styrofoam, an indoor heat exchanger 17, a blower 18, a drain pan 19 that receives the drain water of the indoor heat exchanger 17, and a bell mouth 20 that rectifies the air sucked into the blower 18. At the corners of the outer surface of the housing 15, a hanging fitting 21 is attached. The indoor unit main body 14 is installed in a suspended state from the ceiling 11 by connecting the hanging fitting 21 to a hanging bolt 22 hanging down from the ceiling 11.

[0012] The decorative panel 30 is formed in a substantially rectangular plate shape in plan view so as to cover the opening on the lower surface of the indoor unit main body 14. In the central portion of the decorative panel 30, a panel-side suction port 31 communicating with the bell mouth 20 is formed. An intake grill 32 for covering the panel-side suction port 31 is detachably attached to the decorative panel 30. A filter 33 for removing dust in the air is provided on the indoor unit main body 14 side of the intake grill 32.

[0013] On the outer side of the panel-side suction port 31 of the decorative panel 30 and at positions along each side of the outer peripheral portion of the decorative panel 30, panel-side air outlets 34 for sending the air-conditioned air to the conditioned room are respectively formed. That is, the panel-side air outlets 34 are provided along each side of the decorative panel 30 having a substantially rectangular shape in plan view, and air is blown out in four directions from the panel-side air outlets 34. Each of the panel-side air outlets 34 is provided with a flap 35 (see FIG. 2) whose blowing direction can be adjusted.

[0014] The heat insulating member 16 is provided on the inner surfaces of the side plate 15a and the top plate 15b of the housing 15 to prevent the occurrence of dew condensation in the housing 15. The blower 18 is configured to include a fan motor 23 and a centrifugal fan 24. The fan motor 23 includes a rotating shaft 23a extending downward, and the centrifugal fan 24 is fixed to the rotating shaft 23a. The fan motor 23 is disposed substantially at the center of the indoor unit 10 in plan view and is fixed to the top plate 15b of the housing 15. The centrifugal fan 24 includes a disk-shaped main board 24a fixed to the rotation shaft 23a, an annular shroud 24b disposed substantially coaxially with the main board 24a below the main board 24a, and a plurality of blades 24c connecting the shroud 24b and the main board 24a. The blades 24c are arranged at intervals in the circumferential direction of the main board 24a.

[0015] The indoor heat exchanger 17 is formed by bending a plate-shaped 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 the cooling operation and also functions as a refrigerant evaporator during the heating operation. The indoor heat exchanger 17 is configured to perform heat exchange between the indoor air sucked into the interior of the indoor unit main body 14 and the refrigerant, so that it can cool the air in the air-conditioned room during the cooling operation and heat the indoor air during the heating operation.

[0016] FIG. 3 is a plan view of the drain pan of the indoor unit main body 14 as viewed from below. FIG. 4 is an enlarged view of a part of FIG. 3. The drain pan 19 is disposed below the indoor heat exchanger 17 so as to receive the drain water generated in the indoor heat exchanger 17. The drain pan 19 is made of expanded polystyrene.

[0017] As shown in FIG. 3, the drain pan 19 is formed in a substantially rectangular plate shape so as to close substantially the entire opening of the lower surface of the housing 15. The drain pan 19 includes a drain pan side suction port 25 through which the air sucked by the blower 18 passes at the central portion in a plan view. Further, the drain pan 19 includes a drain pan side blowing portion 26 through which the air blown out to the conditioned chamber passes at a position outside the drain pan side suction port 25 and overlapping each panel side blowout port 34.

[0018] Furthermore, the drain pan 19 includes a heat exchanger accommodating portion 27 in which the lower end portion of the indoor heat exchanger 17 is accommodated. The heat exchanger accommodating portion 27 is formed between the drain pan side blowing portion 26 and the drain pan side suction port 25, and is formed in a water channel shape that goes around along the outer peripheral portion of the drain pan 19. The drain pan 19 includes a drain water passage 27b formed one step lower than the heat exchanger housing portion 27 outside the heat exchanger housing portion 27. The drain water passage 27b is located below the lower surface of the outer peripheral portion of the indoor heat exchanger 17. On the drain water passage 27b of the indoor unit 10, a drain pump (not shown) for discharging drain water is installed.

[0019] In plan view, the drain water passage 27b is formed in a substantially rectangular shape along the lower surface of the indoor heat exchanger 17. The drain water passage 27b has a lowest point 29L where the position of the drain water passage 27b is the lowest at one of its four corners. The suction position 28 of the drain pump is arranged at the lowest point 29L. The drain water is accumulated at the lowest point 29L, sucked out by the drain pump, and discharged to the outside.

[0020] Surrounded by the indoor heat exchanger 17, the drain pan 19, and the bellows 20, a blower chamber 36 for housing the blower 18 is formed inside the housing 15. Also, a blower passage 37 through which the air after heat exchange by the indoor heat exchanger 17 passes is formed between the outer surface of the indoor heat exchanger 17 and the heat insulating member 16 of the side plate 15a of the housing 15. When the indoor unit 10 is operated, the air in the room to be conditioned is sucked into the blower chamber 36 from the panel side suction port 31 (FIG. 1) through the bellows 20 by the rotation of the blower 18. Next, the air in the blower chamber 36 is blown outward by the blower 18, heat-exchanged when passing through the indoor heat exchanger 17, flows into the blower passage 37, and is blown out into the room to be conditioned from the panel side blowout port 34 (FIG. 1). The drain pan side blowout portion 26 constitutes a part of the blower passage 37.

[0021] [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 seen from below the indoor unit when the antibacterial agent unit is attached. FIG. 8 is a view seen from above the drain pan 19 when the antibacterial agent unit is attached. FIG. 9 is a perspective view showing the state where the antibacterial agent unit is attached.

[0022] As shown in FIGS. 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 closer to the lowest point 29L of the drain pan side blowing portion 26, which is a portion of the drain water passage 27b continuous with the lowest point 29L of the drain pan 19.

[0023] As shown in FIGS. 5 to 7, the antibacterial agent unit 40 includes a substantially rectangular box-shaped housing portion 41 with an open top surface, and a lid member 50 that closes the top surface of the housing portion 41. The housing portion 41 is formed in a substantially rectangular box shape with an open top surface, and an antibacterial agent (not shown), such as silver ions, is accommodated inside the housing portion 41. Through holes 42 are formed at the bottom corner portions of the housing portion 41. Locking claws 43 are formed on both upper sides of the housing portion 41 so as to protrude laterally. Guide protrusions 44 are formed on one surface of the housing portion 41. The guide protrusions 44 are formed in a tapered shape with a smaller width dimension downward.

[0024] The lid member 50 includes a lid portion 51 that covers the top surface of the housing portion 41. Fixing flanges 52 extending downward are integrally provided on both sides of the lid portion 51, and engaging holes 53 engaged with the locking claws 43 of the housing portion 41 are formed in the fixing flanges 52. An attachment plate member 54 that extends upward and then extends downward with a predetermined interval from the lid portion 51 is provided on the top surface of the lid portion 51. The lid portion 51 and the attachment plate member 54 are each formed of a resin material.

[0025] A screw hole 55 is formed at the lower end portion of the attachment plate member 54. A knob portion 56 protrudes from one surface of the attachment plate member 54. Then, with a predetermined antibacterial agent stored in the housing portion 41, the lid member 50 is attached to the top surface of the housing portion 41, and the engaging holes 53 of the lid member 50 are engaged with the locking claws 43 of the housing portion 41, thereby fixing the lid member 50 to the housing portion 41.

[0026] Further, in the present embodiment, a plurality of irregularities 57 are formed on the upper surface and the side wall surface of the mounting plate member 54. The groove formed by the plurality of irregularities 57 is formed so as to extend in the length direction of the mounting plate member 54. By forming the plurality of irregularities 57 in this way, when an operator puts a hand into the panel air outlet 34 to remove the antibacterial agent unit 40, the position of the mounting plate member 54 can be easily grasped. Further, since the plurality of irregularities 57 can hold condensed water, it is possible to suppress the dripping of the condensed water adhering to the mounting plate member 54.

[0027] As shown in FIG. 8, a support portion 60 is provided at the mounting position of the antibacterial agent unit 40 of the drain pan 19. The support portion 60 abuts against one surface of the housing portion 41 of the antibacterial agent unit 40 and holds the housing portion 41 between the wall surface of the drain pan side blowing portion 26 of the drain pan 19. An engaging notch 61 into which the guide projection 44 of the housing portion 41 is engaged is formed in the support portion 60. The engaging notch 61 is formed in a tapered shape in which the lower width dimension becomes smaller so as to match the guide projection 44.

[0028] Further, a first recess 62 for positioning the mounting plate member 54 of the antibacterial agent unit 40 is formed at a position corresponding to the support portion 60 on the upper wall surface of the drain pan side blowing portion 26. Further, a second recess 65 continuous with the first recess 62 is formed on the inner wall surface of the drain pan side blowing portion 26. The depth dimensions of the first recess 62 and the second recess 65 are formed to be substantially the same as the thickness dimension of the support portion 60, and the height of the wall surface of the drain pan side blowing portion 26 is configured to be flush in a state where the support portion 60 is installed in the first recess 62 and the second recess 65. Furthermore, a screw stop recess 63 with which a fixing portion formed by bending the lower end portion of the mounting plate member 54 engages is formed on the lower surface of the drain pan side blowing portion 26 of the drain pan 19.

[0029] The antibacterial agent unit 40 is provided between the wall surface of the drain pan side blowing portion 26 and the support portion 60, and the width dimension in the drain water passage 27b adjacent to the lowest point 29L, the width dimension of the support portion 60, and the width dimension of the drain pan side blowing portion 26 are formed to be substantially the same. Furthermore, the drain pan further includes a weir portion 64 at 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 to the antibacterial agent unit 40 by the weir portion 64, so that it is configured to always be able to pass through the installation location of the antibacterial agent unit 40. The antibacterial agent unit 40 is installed with a slight gap with respect to the bottom surface of the drain water passage 27b of the drain pan 19 in a state of being installed on the drain pan 19.

[0030] [1-2 Operation] Next, the operation of the present embodiment will be described. [1-2-1 Installation of the Antibacterial Agent Unit] First, the case of installing 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. For example, an operator holds the knob portion 56 with a tool such as pliers and inserts the antibacterial agent unit 40 inside the wall surface of the drain pan side blowing portion 26 so that the accommodating portion 41 of the antibacterial agent unit 40 is positioned, using the screw hole recess 63 and the first recess 62 as marks.

[0031] When the accommodating portion 41 of the antibacterial agent unit 40 gets over the wall surface of the drain pan side blowing portion 26, since the support portion 60 is provided on the drain pan 19, as shown in FIG. 9, the guide protrusion 44 of the accommodating portion 41 is inserted into the engaging notch 61 of the support portion 60. Then, by moving the antibacterial agent unit 40 downward, the guide protrusion 44 is guided by the engaging notch 61 of the support portion 60, so that the operator can position the accommodating portion 41 of the antibacterial agent unit 40 at a predetermined position even in a state where the inside of the wall surface of the drain pan side blowing portion 26 cannot be visually recognized.

[0032] After that, the lower part of the mounting plate member 54 is bent along the side wall of the drain pan side blowing portion 26, and a screw is screwed into the screw hole 55 to fix the lower end portion of the mounting plate member 54 to the screw - stop recess 63. Thus, the attachment of the antibacterial agent unit 40 is completed. When removing the antibacterial agent unit 40, remove the screw, lift the antibacterial agent unit 40 upward, and make the housing portion 41 of the antibacterial agent unit 40 cross over the wall surface of the drain pan side blowing portion 26, then the antibacterial agent unit 40 can be easily removed.

[0033] [1 - 2 - 2 Operation of the indoor unit] When the indoor unit is operated, the blower is rotationally driven, and the air blown by the blower is sucked into the blower chamber 36. The sucked air passes through the indoor heat exchanger 17, is heat - exchanged in the indoor heat exchanger 17, and is blown out into the conditioned room through the air duct 37 and the drain pan side blowing portion 26. When dew condensation occurs due to the heat exchange by the indoor heat exchanger, the condensed water drops as drain water into the drain water passage 27b of the drain pan 19.

[0034] The drain water flowing into the drain water passage 27b flows toward the lowest point 29L. In this case, the antibacterial agent unit 40 is provided between the wall surface of the drain pan side blowing portion 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 substantially the same as the width dimension between the support portion 60 and the wall surface of the drain pan side blowing portion 26. Since the drain water is guided to the antibacterial agent unit 40 by the weir portion 64, the drain water flowing toward the lowest point 29L will surely pass through the installation portion of the antibacterial agent unit 40. The drain water that adds to the installation portion of the antibacterial agent unit 40 flows into the inside of the housing portion 41 through the through - hole 42 of the housing portion 41, is antibacterial by contacting 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 lowest point 29L, the drain water pump is driven to discharge it to the outside of the indoor unit.

[0035] [1-3. Effects, etc.] As described above, in the present embodiment, the antibacterial agent unit 40 is detachably disposed in the drain water passage 27b of the drain pan 19 near the drain pan side blowing portion 26 (panel side blowout port 34). The antibacterial agent unit 40 includes a housing portion 41 that houses an antibacterial agent, and a lid member 50 having a mounting plate member 54. The housing portion 41 abuts against the wall surface of the drain pan side blowing portion 26 of the drain pan 19. When attaching the housing portion 41 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 along the wall surface of the drain pan side blowing portion 26 and the bottom surface of the housing. According to this, by inserting the antibacterial agent unit 40 from below the panel side blowout port 34 and the drain pan side blowing portion 26, positioning the housing portion 41 inside the drain pan 19, and fixing the mounting plate member 54 to the bottom surface of the housing with the mounting plate member 54 along the wall surface of the drain pan side blowing portion 26 and the bottom surface of the housing, the antibacterial agent unit 40 can be attached without removing the decorative panel.

[0036] In the present embodiment, a knob portion 56 is provided on the mounting plate member 54. The knob portion 56 is provided at substantially the lower end portion of the wall surface of the drain pan side blowing portion 26 (panel side blowout port 34) with the mounting plate member 54 fixed to the bottom surface of the housing. According to this, the antibacterial agent unit 40 can be easily attached from the panel side blowout port 34 and the drain pan side blowing portion 26 while holding the knob portion 56 with a tool such as pliers. Also, by providing the knob portion 56 at substantially the lower end portion of the wall surface of the drain pan side blowing portion 26, the knob portion 56 can be easily held.

[0037] In the present embodiment, a first recess 62 is formed in the upper portion of the wall surface of the drain pan side blowing portion 26 (panel side blowout port 34). The mounting plate member 54 of the lid member 50 is disposed in the first recess 62, and the depth dimension of the first recess 62 is formed to be substantially the same as the thickness dimension of the mounting plate member 54. According to this, the first recess 62 can be used for positioning the mounting plate member 54. Further, when the mounting plate member 54 is installed in the first recess 62, the wall surface of the drain pan side blowout portion 26 of the drain pan 19 is flush, so that the flow path resistance of the air flowing through the panel side air outlet 34 can be suppressed.

[0038] Further, in the present embodiment, a second recess 65 is formed in the wall surface of the drain pan side blowout portion 26 (panel side air outlet 34), the mounting plate member 54 is disposed in the second recess 65, and the depth dimension of the second recess 65 is formed to be substantially the same as the thickness dimension of the mounting plate member 54. According to this, the second recess 65 can be used for positioning the mounting plate member 54. Further, when the mounting plate member 54 is installed in the second recess 65, the wall surface of the drain pan side blowout portion 26 of the drain pan 19 is flush, so that the flow path resistance of the air flowing through the panel side air outlet 34 can be suppressed.

[0039] Further, in the present embodiment, the drain pan 19 is provided with a support portion 60 disposed substantially parallel to the wall surface of the drain pan side blowout portion 26 (panel side air outlet 34). An engaging notch 61 with an open upper portion is formed in the support portion 60, and a guide projection 44 engaged with the engaging notch 61 is formed in the accommodating portion 41 in a state where the antibacterial agent unit 40 is installed. According to this, the support portion 60 can support the antibacterial material unit in a direction substantially parallel to the wall surface of the drain pan side blowout portion 26. Further, by engaging the guide projection 44 of the antibacterial agent unit 40 with the engaging notch 61 of the support portion 60, the positioning of the antibacterial agent unit 40 can be performed.

[0040] Further, in the present embodiment, the guide projection 44 is formed in a tapered shape with a width dimension decreasing downward, and the engaging notch 61 is formed in a tapered shape with a width dimension of the lower portion decreasing in accordance with the shape of the guide projection 44. According to this, when the antibacterial agent unit 40 is inserted and attached from below the drain pan side blowing portion 26, the tapered guide protrusion 44 is guided by the engagement notch 61 of the support portion 60, and even when the housing portion 41 of the antibacterial agent unit 40 is not visible from the outside, the positioning and installation of the antibacterial agent unit 40 can be performed.

[0041] Also, in the present embodiment, the housing portion 41 is arranged at a predetermined interval with respect to the bottom surface of the drain water passage 27b. According to this, when the drain water flowing through the drain water passage 27b flows to the lowest point 29L, it is possible to suppress inhibiting the flow of the drain water.

[0042] (Other embodiments) As described above, as an example of the technology disclosed in the present application, Embodiment 1 has been described. However, the technology in the present disclosure is not limited to this, and can also be applied to embodiments in which changes, replacements, additions, omissions, etc. are made. Further, it is also possible to combine the respective components described in Embodiment 1 above to form a new embodiment. For example, in the above embodiment, the antibacterial agent unit 40 is provided in the drain pan side blowing portion 26, but it may be arranged near the suction port. Also, in the above embodiment, the antibacterial agent unit 40 has been described with a configuration in which the mounting plate member 54 is provided on the lid member 50, but the mounting plate member 54 may be provided in the housing portion 41.

Industrial applicability

[0043] The present disclosure is applicable to an indoor unit in which the antibacterial agent unit can be attached and detached without removing the decorative panel.

Explanation of reference numerals

[0044] 10 Indoor unit 14 Indoor unit main body 15 Housing 16 Heat insulating 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 blowout part 26 Drain pan side blowout part 27 Heat exchanger housing part 27b Drain water passage 28 Drain pump suction position 29L Lowest point 30 Decorative panel 32 Grill 33 Filter 34 Panel side blowout port 35 Flap 36 Blower room 37 Air duct 40 Antibacterial agent unit 41 Housing part 42 Through hole 43 Locking claw 44 Guide protrusion 50 Cover member 51 Cover part 52 Fixing flange 53 Engagement hole 54 Mounting plate member 55 Screw hole 56 Knob part 60 Support part 62 First recess 63 Screw recess 64 Weir part 65 Second recess

Claims

1. 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, When the storage unit is attached to the drain pan, the mounting plate member is fixed to the bottom surface of the housing in a state where the mounting plate member is aligned along the wall surface of the air outlet and the bottom surface of the housing. An indoor unit characterized by:

2. A knob portion is provided on the mounting plate member, The knob portion is provided at a substantially lower end portion of the wall surface of the air outlet in a state in which the mounting plate member is fixed to the bottom surface of the housing. The indoor unit according to claim 1 .

3. 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 depth of the first recess is formed to be substantially the same as the thickness of the mounting plate member. The indoor unit according to claim 1 or 2.

4. 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 depth of the second recess is formed to be substantially the same as the thickness of the mounting plate member. The indoor unit according to any one of claims 1 to 3.

5. 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 container portion is formed with a guide protrusion that is engaged with the engagement notch when the antibacterial agent unit is installed. The indoor unit according to any one of claims 1 to 4.

6. The guide protrusion is formed in a tapered shape in which the width dimension decreases downward, The engagement notch is formed in a tapered shape in which the width dimension at the bottom decreases in accordance with the shape of the guide protrusion. The indoor unit according to claim 5 .

7. The storage portion is disposed at a predetermined distance from the bottom surface of the drain water passage. The indoor unit according to any one of claims 1 to 6.

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