Ceiling cassette air conditioning device

Abstract

This ceiling cassette air conditioning device comprises a blower, a heat exchanger, a drain pan, and a main body case, wherein an air outlet is formed in a front face of the main body case, the blower is located on one side of the blower in the left-right direction of the main body case, an air duct is formed between the blower and the air outlet, the drain pan has a gutter section and a collecting section, the collecting section is located on the other side of the heat exchanger in the left-right direction, a maintenance cover is openably provided to cover the collecting section, the maintenance cover has a front face section and a side face section, the front face section is located along the front face of the main body case, on the other side of the air outlet in the left-right direction, and the side face section is located along the air duct, extending in a direction that intersects the front face section in a top view.

Description

Ceiling-mounted air conditioning unit

[0001] The present disclosure relates to a ceiling-mounted air conditioning device.

[0002] Patent Document 1 describes an air conditioner that includes a heat exchanger, a drain pan that receives and stores condensed water generated by the heat exchanger, and a housing that houses the heat exchanger and the drain pan. An opening is formed in the side of the housing so that the drain pan can be inserted and removed.

[0003] With this air conditioning device, even if the air conditioning device is installed in an installation space where sufficient vertical dimensions cannot be secured, the drain pan can be inspected and cleaned by inserting and removing it through the opening on the side of the housing.

[0004] Patent No. 6639159

[0005] Inspection and cleaning of the drain pan in the above-mentioned air conditioning system is expected to be performed through a ceiling inspection hatch. However, there are cases where a ceiling inspection hatch is not provided due to reasons such as ceiling design. In such cases, there is a problem in that it becomes difficult to perform maintenance on the air conditioning system, such as inspecting the drain pan, after the air conditioning system has been installed.

[0006] The present disclosure has been made to solve the above-mentioned problems, and has an object to provide a ceiling-mounted air conditioner that can be easily maintained.

[0007] A ceiling-mounted air conditioner according to the present disclosure includes a blower, a heat exchanger that exchanges heat between air blown by the blower and a heat medium, a drain pan arranged below the heat exchanger, and a main body case that houses the blower, the heat exchanger, and the drain pan, wherein an air outlet through which air that has passed through the heat exchanger is blown out is formed on a front surface of the main body case, the blower is arranged on one side of the main body case in the left-right direction with respect to the air outlet, an air passage is formed between the blower and the air outlet to guide the air blown by the blower to the air outlet, the heat exchanger is provided in the air passage so as to be disposed obliquely with respect to the air outlet in a top view, and the heat exchanger is disposed at a first end located on the one side in the left-right direction. and a second end located on the other side in the left-right direction and positioned further back than the first end when viewed from the air outlet side, the drain pan has a gutter portion that receives condensed water generated in the heat exchanger and a collection portion in which the condensed water flowing from the gutter portion is collected as drain water, the collection portion is positioned on the other side in the left-right direction relative to the heat exchanger, and a maintenance cover is provided that can be opened and closed to cover the collection portion, the maintenance cover has a front portion and a side portion, the front portion is positioned on the other side in the left-right direction relative to the air outlet, along the front surface of the main body case, and the side portion extends in a direction that intersects with the front portion when viewed from above and is positioned along the air path.

[0008] According to the present disclosure, maintenance of a ceiling-mounted air conditioner can be easily performed.

[0009] Fig. 1 is a side view showing the installation status of a ceiling-embedded air conditioning apparatus according to embodiment 1. Fig. 2 is a perspective view showing the configuration of a ceiling-embedded air conditioning apparatus according to embodiment 1. Fig. 3 is a perspective view showing the configuration of a ceiling-embedded air conditioning apparatus according to embodiment 1. Fig. 4 is a front view showing the configuration of a ceiling-embedded air conditioning apparatus according to embodiment 1 as seen from the front side. Fig. 5 is a top view showing the internal structure of a ceiling-embedded air conditioning apparatus according to embodiment 1. Fig. 6 is a perspective view showing the connection structure between a maintenance cover and a heat exchanger in a ceiling-embedded air conditioning apparatus according to embodiment 1. Fig. 7 is a perspective view showing a state in which the maintenance cover is open in a ceiling-embedded air conditioning apparatus according to embodiment 1.

[0010] Embodiments of the present disclosure will be described below with reference to the drawings. The present disclosure is not limited to the following embodiments and can be modified in various ways without departing from the spirit and scope of the present disclosure. Furthermore, the present disclosure includes all possible combinations of the configurations shown in the following embodiments. In particular, the combinations of components are not limited to those in each embodiment; components described in one embodiment can be applied to another embodiment. In the following description, directional terms (e.g., "up," "down," "right," "left," "front," "rear," etc.) are used as appropriate to facilitate understanding, but these are for explanatory purposes and do not limit the present disclosure. In each drawing, components designated with the same reference numerals are identical or equivalent, and this applies throughout the entire specification. Note that the relative dimensional relationships or shapes of each component in each drawing may differ from those in reality.

[0011] Embodiment 1. A ceiling-mounted air conditioning device according to embodiment 1 will be described. Fig. 1 is a side view showing the installation status of a ceiling-mounted air conditioning device according to this embodiment. In this embodiment, a ceiling-mounted indoor unit 1 is shown as an example of a ceiling-mounted air conditioning device.

[0012] As shown in Figure 1, the indoor unit 1 is installed inside the dropped ceiling 2, i.e., above the dropped ceiling 2. The indoor unit 1 is suspended from the beams of the building via a plurality of hanging bolts (not shown) extending vertically. The dropped ceiling 2 is provided at a lower position than the interior ceiling 3. In this embodiment, for design reasons and the like, the dropped ceiling 2 is not provided with a ceiling inspection hatch.

[0013] A lowered wall surface 4 is provided at the step between the lowered ceiling 2 and the indoor ceiling 3. A lowered wall surface opening 5 is formed in the lowered wall surface 4. A grill 6 is provided in the lowered wall surface opening 5. The indoor unit 1 is disposed so as to face the grill 6.

[0014] As indicated by thick arrows A1 and A2, the indoor unit 1 takes in indoor air into the main body case 10 through the grill 6. The taken-in indoor air is cooled or heated by heat exchange with the heat medium. The cooled or heated air is then blown out of the main body case 10 through the grill 6 into the room, as indicated by thick arrows A3 and A4.

[0015] Figures 2 and 3 are perspective views showing the configuration of a ceiling-mounted air conditioner according to this embodiment. Figure 4 is a front view showing the configuration of the ceiling-mounted air conditioner according to this embodiment as seen from the front side. Figure 5 is a top view showing the internal structure of the ceiling-mounted air conditioner according to this embodiment. The left-right direction in Figure 5 represents the left-right direction of the indoor unit 1 and the main body case 10. The up-down direction in Figure 5 represents the front-to-rear direction of the indoor unit 1 and the main body case 10. The bottom in Figure 5 represents the front side of the indoor unit 1 and the main body case 10, i.e., the grill 6 side. The top in Figure 5 represents the rear side of the indoor unit 1 and the main body case 10. The direction perpendicular to the plane of the paper in Figure 5 represents the vertical up-down direction.

[0016] As shown in Figures 2 to 5, the indoor unit 1 has a main body case 10. Four hanging fittings 17 are provided on the outside of the main body case 10. Two hanging fittings 17 are provided on each of the left and right sides of the main body case 10. The main body case 10 is suspended within the dropped ceiling 2 by hanging bolts connected to each hanging fitting 17.

[0017] The main body case 10 is made of sheet metal and has a rectangular parallelepiped shape. The main body case 10 has a top plate 11, one side plate 12, the other side plate 13, and a bottom plate 14. The main body case 10 houses a heat exchanger 20, a blower 30, a drain pan 40, a drain pump 41, a control box 50, etc.

[0018] An air outlet 15 is formed on one side of the main body case 10. Hereinafter, the side on which the air outlet 15 is formed may be referred to as the front side of the main body case 10. The air outlet 15 is formed in a rectangular shape extending along the left-right direction of the indoor unit 1. The main body case 10 is positioned so that the air outlet 15 faces downwardly the wall opening 5 and the grill 6.

[0019] The interior of the main body case 10 is divided by a partition plate 16. The partition plate 16 is disposed perpendicular to the air outlet 15 in the top view shown in Fig. 5 . As a result, the interior of the main body case 10 is divided into two spaces, left and right, by the partition plate 16. In the top view, the air outlet 15 and the heat exchanger 20 are provided to the right of the partition plate 16.

[0020] A blower 30 is provided in the space inside the main body case 10 to the left of the partition plate 16. When viewed from above, the blower 30 is positioned to the left of the air outlet 15 and the heat exchanger 20. In other words, when viewed from the front side of the main body case 10, the blower 30 is positioned so as not to overlap with the air outlet 15 and the heat exchanger 20.

[0021] The blower 30 is a sirocco fan equipped with an impeller and motor (not shown), and a spiral fan casing 32 that houses them. The impeller's rotation shaft 31 extends vertically. An intake opening 32a is formed on the underside of the fan casing 32. A bottom opening 10a is formed on the bottom surface of the main body case 10, below the fan casing 32. As a result, air within the dropped ceiling 2 is drawn into the fan casing 32 via the bottom opening 10a and the intake opening 32a.

[0022] An outlet opening 32b facing the tangent direction of the spiral is formed on the outer periphery of the fan casing 32. The fan casing 32 is positioned so that the outlet opening 32b faces the left-right direction of the indoor unit 1.

[0023] A control box 50 is provided in the main body case 10 on the front side of the blower 30. The control box 50 houses control devices that control the functional components of the indoor unit 1. A lid 51 is removably attached to the front side of the control box 50. The lid 51 is positioned so as to face the downward wall opening 5 and the grill 6.

[0024] An air blowing opening 16a is formed in the partition plate 16. An air blowing opening 32b of the fan casing 32 is connected to the air blowing opening 16a. As a result, air drawn into the fan casing 32 is blown out in the left-right direction of the indoor unit 1 through the air blowing opening 32b and the air blowing opening 16a, and flows into the space to the right of the partition plate 16.

[0025] An air passage 34 is formed in the space to the right of the partition plate 16. The air passage 34 is formed between the blower 30 and the air outlet 15. Air blown by the blower 30 is guided to the air outlet 15 by the air passage 34. A heat exchanger 20 is provided in the middle of the air passage 34. The heat exchanger 20 is arranged downstream of the blower 30 in the flow of air blown by the blower 30. The heat exchanger 20 is arranged diagonally with respect to both the air blowing opening 16a and the air outlet 15 in a top view of the indoor unit 1. The heat exchanger 20 is arranged so as to overlap with the air outlet 15 when viewed along the front-to-rear direction of the indoor unit 1.

[0026] The heat exchanger 20 is configured to exchange heat between air and a heat medium. The heat exchanger 20, together with a compressor, an outdoor heat exchanger, and an expansion valve (not shown), constitutes a refrigeration cycle. A refrigerant circulating through the refrigeration cycle flows inside the heat exchanger 20 as a heat medium.

[0027] The heat exchanger 20 has a first end 20a and a second end 20b. The first end 20a is located on the left side in the left-right direction of the main body case 10, i.e., the end closer to the blower 30. The second end 20b is located on the right side in the left-right direction of the main body case 10, i.e., the end farther from the blower 30. When viewed from the air outlet 15 side, the second end 20b is located further back than the first end 20a. In other words, the distance between the second end 20b and the air outlet 15 is longer than the distance between the first end 20a and the air outlet 15.

[0028] The heat exchanger 20 also has a heat exchange section 20c that exchanges heat between the air and the heat medium, and a pair of side plates 20d and 20e that are provided on both sides of the heat exchange section 20c. The side plate 20d is provided at the first end 20a. The side plate 20e is provided at the second end 20b.

[0029] A partition wall 18 that forms part of the outer peripheral wall of air passage 34 is provided inside main body case 10. Partition wall 18 is formed by internal insulation material 19 provided inside main body case 10. Another part of the outer peripheral wall of air passage 34 is formed by a side surface portion 61b of a maintenance cover 61, which will be described later. Air blown out in the left-right direction of indoor unit 1 by blower 30 changes direction along air passage 34, passes through heat exchanger 20, and is blown out from air outlet 15.

[0030] A drain pan 40 is disposed below the heat exchanger 20. The drain pan 40 has a gutter portion 40a and a collection portion 40b. The gutter portion 40a is formed directly below the lower end of the heat exchanger 20. The gutter portion 40a extends in a groove shape along the lower end of the heat exchanger 20. The gutter portion 40a is configured to receive condensed water generated in the heat exchanger 20 and direct it to the collection portion 40b.

[0031] The accumulation portion 40b is configured to collect condensed water flowing from the gutter portion 40a as drain water. The accumulation portion 40b is formed in a groove shape that is deeper than the gutter portion 40a. The accumulation portion 40b extends along the front-to-rear direction of the main body case 10. The accumulation portion 40b is positioned to the right in the left-to-right direction of the main body case 10 with respect to the heat exchanger 20 and the air outlet 15. In other words, the accumulation portion 40b is positioned on the opposite side of the main body case 10 with respect to the heat exchanger 20 and the air outlet 15 with respect to the left-to-right direction of the main body case 10.

[0032] The accumulation section 40b is provided with a drain pump 41 and a float switch 43. The drain pump 41 is configured to discharge the drain water accumulated in the accumulation section 40b to the outside. The drain pump 41 is connected to a pump drain port 42. The drain water accumulated in the accumulation section 40b is discharged by the drain pump 41 through the pump drain port 42 to the outside of the main body case 10.

[0033] The float switch 43 is configured to detect the level of the drain water in the accumulation section 40 b. The operation of the drain pump 41 is controlled based on the level of the drain water detected by the float switch 43.

[0034] A piping (not shown) through which the refrigerant flows is connected to the second end 20b of the heat exchanger 20. The piping passes through a space above the accumulation section 40b within the main body case 10. In FIG. 5, the space above the accumulation section 40b in which the piping is arranged is shown as a piping space 21. A piping sensor 22 is provided on the piping. The piping sensor 22 is provided above the accumulation section 40b. The piping sensor 22 is configured to detect the state of the refrigerant, for example, the temperature of the refrigerant. The piping and the piping sensor 22 within the main body case 10 are positioned to the right of the heat exchanger 20 and the air outlet 15 in the left-right direction of the main body case 10. When viewed from the air outlet 15 side, the drain pump 41 and the float switch 43 are both positioned in front of the piping in the piping space 21.

[0035] A maintenance cover 61 is provided on the front side of the accumulation section 40b. The maintenance cover 61 is provided so as to be openable and closable relative to the main body case 10. The maintenance cover 61 is positioned to the right in the left-right direction of the main body case 10 relative to the heat exchanger 20 and the air outlet 15.

[0036] The maintenance cover 61 is L-shaped when viewed from above. The maintenance cover 61 has a front surface 61a, a side surface 61b, and a corner 61c formed between the front surface 61a and the side surface 61b. The front surface 61a is adjacent to the air outlet 15 and is disposed along the front surface of the main body case 10. The front surface 61a is located forward of the accumulation portion 40b in the front-to-rear direction of the main body case 10. The front surface 61a is disposed so as to face the downward wall opening 5 and the grill 6. The front surface 61a is fixed to the side panel 13 with screws 13a.

[0037] The side surface portion 61b extends in a direction intersecting with the front surface portion 61a in a top view. The side surface portion 61b is arranged along the air passage 34 downstream of the heat exchanger 20 in a top view. The side surface portion 61b is located to the side of the accumulation portion 40b. The side surface portion 61b forms an outer peripheral wall of the air passage 34 downstream of the heat exchanger 20. The side surface portion 61b is provided between the air passage 34 and the space in which the accumulation portion 40b is formed.

[0038] Fig. 6 is a perspective view showing the connection structure between the maintenance cover and the heat exchanger in a ceiling-mounted air conditioning system according to this embodiment. As shown in Fig. 6, two hinge portions 62 are formed on the end portion 61b1 of the side portion 61b of the maintenance cover 61, opposite the corner portion 61c. Two square holes 20e1 are formed in the side plate 20e of the heat exchanger 20. Each hinge portion 62 is hooked into the corresponding square hole 20e1 so that it can be attached and detached from the side plate 20e of the heat exchanger 20 via the hinge portions 62.

[0039] Normally, the maintenance cover 61 is closed. When the maintenance cover 61 is closed, the space in which the accumulation section 40b is formed is separated from the air passage 34 by the side surface 61b. Also, when the maintenance cover 61 is closed, the space in which the accumulation section 40b is formed is separated from the space in front of the main body case 10 by the front surface 61a.

[0040] FIG. 7 is a perspective view showing the ceiling-mounted air conditioner according to this embodiment with the maintenance cover open. To open the maintenance cover 61, an operator removes the screws 13a securing the maintenance cover 61 and rotates the maintenance cover 61 around the hinge 62. The maintenance cover 61 can be opened until the side surface 61b abuts against the downstream surface of the heat exchanger 20 in the airflow. This connects the space forming the accumulation section 40b to the air passage 34 downstream of the heat exchanger 20 and opens it widely toward the air outlet 15. This ensures ample space for performing maintenance on the accumulation section 40b from the air outlet 15 side. Therefore, an operator can easily inspect and clean the accumulation section 40b, replace the drain pump 41 and float switch 43, and replace the piping sensor 22 by reaching their hands from the front side of the main case 10 through the down-hanging wall opening 5. These maintenance tasks can be performed without removing the drain pan 40 from the main case 10.

[0041] Furthermore, in this embodiment, the maintenance cover 61 is attached to the side plate 20e of the heat exchanger 20 via the hinge portion 62, so that when the maintenance cover 61 is opened, the side portion 61b is positioned to cover the downstream surface of the heat exchanger 20. As a result, the heat exchanger 20 is protected by the side portion 61b, and damage to the fins of the heat exchanger 20 can be prevented during maintenance.

[0042] In this embodiment, the maintenance cover 61 is attached to the side plate 20e of the heat exchanger 20 via a hinge portion 62 so as to be openable, closable, and detachable, but this is not limiting. If the maintenance cover 61 is attached detachably, it may be attached without the hinge portion 62. Also, if the maintenance cover 61 is attached via the hinge portion 62, it may not be detachable.

[0043] As described above, the ceiling-mounted air conditioning system according to this embodiment includes the blower 30, the heat exchanger 20, the drain pan 40, and the main body case 10. The heat exchanger 20 exchanges heat between the air blown by the blower 30 and the heat medium. The drain pan 40 is disposed below the heat exchanger 20. The main body case 10 houses the blower 30, the heat exchanger 20, and the drain pan 40.

[0044] An air outlet 15 is formed on the front surface of the main body case 10, through which air that has passed through the heat exchanger 20 is blown out. The blower 30 is disposed on one side of the air outlet 15 in the left-right direction of the main body case 10. An air passage 34 is formed between the blower 30 and the air outlet 15, guiding air blown by the blower 30 to the air outlet 15. The heat exchanger 20 is provided in the air passage 34 so as to be disposed obliquely with respect to the air outlet 15 in a top view. The heat exchanger 20 has a first end 20a located on the one side of the main body case 10 in the left-right direction, and a second end 20b located on the other side of the main body case 10 in the left-right direction and located further back than the first end 20a when viewed from the air outlet 15 side. The drain pan 40 has a gutter 40a that receives condensed water generated in the heat exchanger 20 and a collection section 40b that collects condensed water flowing from the gutter 40a as drain water. The accumulation portion 40b is disposed on the other side of the heat exchanger 20 in the left-right direction of the main body case 10.

[0045] An openable and closable maintenance cover 61 is provided to cover the accumulation section 40b. The maintenance cover 61 has a front surface 61a and a side surface 61b. The front surface 61a is disposed along the front surface of the main body case 10 on the other left-right side of the main body case 10 relative to the air outlet 15. The side surface 61b extends in a direction intersecting with the front surface 61a in a top view and is disposed along the air passage 34.

[0046] With this configuration, when the maintenance cover 61 is opened, the space in which the accumulation section 40b is formed is connected to the air passage 34 downstream of the heat exchanger 20 and is widely open toward the air outlet 15. This ensures a large space for performing maintenance on the accumulation section 40b from the air outlet 15 side. Therefore, even if a ceiling inspection hatch is not provided, maintenance such as inspection and cleaning of the accumulation section 40b can be easily performed from the front side of the main body case 10 through the lowered wall opening 5.

[0047] In the ceiling-mounted air conditioning system according to this embodiment, the heat exchanger 20 has a side plate 20e provided at the second end 20b. The side surface 61b of the maintenance cover 61 is attached to the side plate 20e via a hinge 62.

[0048] According to this configuration, when the maintenance cover 61 is opened, the side surface 61b is positioned to cover the downstream surface of the heat exchanger 20. As a result, the heat exchanger 20 is protected by the side surface 61b, and damage to the fins of the heat exchanger 20 can be prevented during maintenance.

[0049] In the ceiling-mounted air conditioning system according to this embodiment, the heat exchanger 20 has a side plate 20e provided at the second end 20b. The side surface 61b of the maintenance cover 61 is detachably attached to the side plate 20e.

[0050] According to this configuration, by removing the maintenance cover 61, a large space can be secured for performing maintenance on the accumulation section 40b from the front side of the main body case 10.

[0051] In the ceiling-mounted air conditioner according to this embodiment, a pipe through which a heat medium flows is connected to the second end 20b of the heat exchanger 20. A drain pump 41 that discharges drain water to the outside is provided in the accumulation section 40b. When viewed from the air outlet 15 side, the drain pump 41 is located closer to the pipe.

[0052] With this configuration, maintenance and replacement of the drain pump 41 can be easily performed from the front side of the main body case 10.

[0053] In the ceiling-mounted air conditioner according to this embodiment, the accumulation section 40b is provided with a float switch 43 for detecting the water level of the drain water. When viewed from the air outlet 15 side, the float switch 43 is located closer to the user than the above-mentioned piping.

[0054] With this configuration, maintenance and replacement of the float switch 43 can be easily performed from the front side of the main body case 10.

[0055] 1 Indoor unit, 2 Dropped ceiling, 3 Indoor ceiling, 4 Dropped wall, 5 Dropped wall opening, 6 Grill, 10 Main body case, 10a Bottom opening, 11 Top plate, 12, 13 Side plate, 13a Screw, 14 Bottom plate, 15 Air outlet, 16 Partition plate, 16a Air outlet, 17 Hanging hardware, 18 Partition wall, 19 Internal insulation material, 20 Heat exchanger, 20a First end, 20b Second end, 20c Heat exchange section, 20d, 20e Side plate, 20e1 Square hole, 21 Piping space, 22 Piping sensor, 30 Blower, 31 Rotating shaft, 32 Fan casing, 32a Intake opening, 32b Outlet opening, 34 Air duct, 40 Drain pan, 40a Gutter section, 40b Accumulation section, 41 Drain pump, 42 pump drain port, 43 float switch, 50 control box, 51 lid, 61 maintenance cover, 61a front portion, 61b side portion, 61b1 end portion, 61c corner portion, 62 hinge portion.

Claims

1. An air conditioner of the ceiling-embedded type, comprising: a blower; a heat exchanger configured to exchange heat between air blown by the blower and a heat medium; a drain pan disposed below the heat exchanger; and a main body case configured to house the blower, the heat exchanger, and the drain pan. An air outlet through which air that has passed through the heat exchanger is blown is formed in the front surface of the main body case. The blower is disposed on one side in the left-right direction of the main body case with respect to the air outlet. An air passage for guiding air blown by the blower to the air outlet is formed between the blower and the air outlet. The heat exchanger is provided in the air passage so as to be disposed obliquely with respect to the air outlet in a top view. The heat exchanger has a first end portion located on the one side in the left-right direction and a second end portion located on the other side in the left-right direction and disposed deeper than the first end portion when viewed from the air outlet side. The drain pan has a gutter portion configured to receive condensed water generated in the heat exchanger and an accumulation portion configured to accumulate the condensed water flowing from the gutter portion as drain water. The accumulation portion is disposed on the other side in the left-right direction with respect to the heat exchanger. A maintenance cover is provided so as to be openable and closable to cover the accumulation portion. The maintenance cover has a front surface portion and a side surface portion. The front surface portion is disposed along the front surface of the main body case on the other side in the left-right direction with respect to the air outlet. The side surface portion extends in a direction intersecting the front surface portion in a top view and is disposed along the air passage.

2. The ceiling-embedded type air conditioner according to claim 1, wherein the heat exchanger has a side plate provided at the second end portion, and the side surface portion of the maintenance cover is attached to the side plate via a hinge portion.

3. The ceiling-embedded type air conditioner according to claim 1, wherein the heat exchanger has a side plate provided at the second end portion, and the side surface portion of the maintenance cover is detachably attached to the side plate.

4. A pipe through which the heat medium flows is connected to the second end portion of the heat exchanger, a drain pump for discharging the drain water to the outside is provided in the integration portion, and when viewed from the outlet side, the drain pump is disposed on the front side of the pipe. The ceiling-embedded air conditioner according to any one of claims 1 to 3.

5. A float switch for detecting the water level of the drain water is provided in the integration portion, and when viewed from the outlet side, the float switch is disposed on the front side of the pipe. The ceiling-embedded air conditioner according to claim 4.

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