JP2005257142A - Ceiling-embedded air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify a structure of a panel for rotating the air blowing direction to send air through a room, and to improve the maintenance. <P>SOLUTION: A rotating mechanism is composed of a rotating part fixed to a rear face of the panel 3, and a fixing part of a dew receiving pan 1e. The fixing part is composed of a ring-shaped rail 1j having a L-shaped cross section fixed to a lower face of the dew receiving pan 1e and mounted concentrically with a suction port 3a, and the rotating part is composed of a roller 3d rotatably journaled to a stator 3c erected on the rear face of the panel 3, and rolling on the rail 1j. A motor 1g for rotating the entire panel 3 is fixed to a vertical face of a mounting part 1f1 projecting from an outer periphery of a bell-mouth 1f, and a gear 1h is fixed to its rotating shaft. On the other hand, a rack 3e is mounted on the rear face of the panel 3 at an engagement position with the gear 1h, in the circumferential direction of the panel 3, and the entire panel 3 is rotated by rotating the gar 1h. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a ceiling-embedded air conditioner in which a panel having a suction port at the center and a blower outlet on the outer periphery of the suction port rotates concentrically with the suction port.

Conventionally, as an example of a ceiling-embedded air conditioner, it has a structure of a side sectional view of FIG. 8, a view seen from the lower side of FIG. 9, and a perspective view of FIG.
25 is suspended in a space above the ceiling plate in the room, the upper part is closed with a top plate 23 provided with a hanging bracket 24, and a cylindrical box with a pipe cover 26 on the side, 14 is the same box 25 A decorative panel provided with a circular suction port 19 in the center and a donut-shaped air outlet 15 along the periphery thereof, 20 is a filter provided inside the circular suction port 19, and 13 is the above-mentioned A circular heat exchanger arranged at the upper center in the box 25 and having a partition plate 13a attached to the side, 12 is located on the box 25 side with the axial direction perpendicular to the center of the circular heat exchanger 13. A centrifugal fan driven by a supported fan motor 11, 28 is a motor base for attaching the fan motor 11 to the box body 25 via a vibration isolating rubber 27, and 16 is rotatably provided at the air outlet 15. The wind direction changing plate 16 is rotated together with the rotating plate 21 by a driving device which will be described later. And has a configuration was.

  A driving device for rotating the wind direction changing plate 16 includes a driving motor 38 provided on a driving plate 22 on one side of the box 25, and transmission to be described later for transmitting the driving force of the driving motor 38. And a linkage portion for linking to the wind direction changing plate 16.

  As shown in FIG. 10, the transmission unit constituting the drive device for rotating the wind direction changing plate 16 includes a timing pulley 18 provided on the drive shaft of the drive motor 38, and the same timing pulley. 18 corresponds to the timing belt 17 provided in the box 25 corresponding to 18 (see, for example, Patent Document 1).

  However, in the conventional structure, since the wind direction changing plate is rotated, the rotating plate and the driving plate slide in the circumferential direction, and there is a problem that smooth rotation is impossible. Furthermore, in order to rotate the wind direction changing plate, the driving plate must be fixed to the box, and the entire driving device including these has been complicated. Further, because of this complicated driving device, the wind direction changing plate cannot be removed from the lower side, and there is a problem that the maintainability is very poor.

Japanese Patent Laid-Open No. 11-201494 (page 3, FIG. 10)

  The object of the present invention is to solve the above-described problems, to rotate the blowing direction of the air, to simplify the structure of the panel that blows air all over the room, and to improve the maintainability.

In order to solve the above-described problems, the present invention provides a cylindrical casing that opens at the bottom, a blower fan that is driven by a fan motor that is suspended from the center of the casing, and a heat exchanger that surrounds the blower fan. A dew pan fixed to the lower part of the heat exchanger, a panel that closes the open end of the housing, has a circular suction port located below the centrifugal fan, and has a blower outlet on the periphery. A rotation mechanism for rotating the panel concentrically with the suction port,
The rotation mechanism has a structure including a rotation portion fixed to the back surface of the panel and a fixing portion disposed on an outer periphery of the open end of the casing or the housing.

  And the said fixed part is fixed to the lower surface of the said dew pan, and consists of the ring-shaped rail arrange | positioned concentrically with the said suction inlet, The said rotation part is on the stay erected on the back surface of the said panel. A structure is made of a roller that is pivotally supported and rolls on the rail.

  Alternatively, the fixed part is a flange provided on the outer periphery of the opening end of the casing, and the rotating part is pivotally supported by a support base provided on the outer peripheral back surface of the panel, The structure consists of rollers that roll on the flange.

  The flange is formed with an inclined cross section, and the roller has a truncated cone shape corresponding to the inclination of the flange.

  The panel may be detachably attached to the casing from the opening side of the casing.

  Moreover, the rotatable up-and-down wind direction board arrange | positioned in the position corresponding to the said blower outlet of the said panel, the drive mechanism which drives the same up-and-down wind direction board, and the said panel are comprised as one unit.

  A bell mouth is provided on the back surface of the panel corresponding to the suction port.

By using the above structure, according to the ceiling-embedded air conditioner according to the present invention, the invention according to claim 1 is hung from the center in the casing and the cylindrical casing that opens the lower surface. A blower fan driven by a fan motor, a heat exchanger that surrounds the blower fan, a dew pan fixed to the lower part of the heat exchanger, and an opening end of the housing is closed and located below the centrifugal fan. A panel having a circular suction port and a blower outlet at the periphery, and a rotation mechanism for rotating the panel concentrically with the suction port,
The rotation mechanism has a structure including a rotation part fixed to the back surface of the panel and a dew tray or a fixed part arranged on the outer periphery of the opening end of the housing.
In order to suspend the panel, the dew tray and the metal plate of the housing that have already been suspended can be used to simplify the rotating structure, and the rotating part and the fixed part are combined near the back of the panel. Therefore, maintainability is improved. Furthermore, since it is not necessary to provide a dedicated suspension mechanism at the suction port or the air outlet, the cost can be reduced. Moreover, ventilation resistance does not occur due to the provision of a dedicated suspension mechanism.

  The invention according to claim 2 is a stay in which the fixed portion is fixed to the lower surface of the dew receiving tray, is composed of a ring-shaped rail arranged concentrically with the suction port, and the rotating portion is erected on the back surface of the panel. The rotating structure is simplified by the structure that consists of rollers that are pivotally supported on the rail and roll on the rail, and the roller on the back of the panel and the rail on the bottom of the dew pan are located below the housing. Since it becomes a connected structure, it is easy to align the mounting and improve the maintainability. Further, the rotation of the panel in the circumferential direction can be performed smoothly.

In the invention according to claim 3, the fixed portion is formed of a flange provided on the outer periphery of the opening end of the housing, and the rotating portion is pivotally supported by a support base provided on the outer peripheral back surface of the panel. By having a structure consisting of rollers that roll on the flange,
Since the rotating structure is simplified and the roller and the flange on the back surface of the panel are connected to each other below the housing, the mounting position can be easily aligned and the maintainability can be improved.
Further, since the flange can be used as a rail for the roller, the number of parts can be reduced and the cost can be reduced.
Furthermore, since the rotation mechanism can be arranged on the outer periphery of the panel, the panel can be stably suspended.

In the invention according to claim 4, the flange is formed with an inclined cross section, and the roller has a truncated cone shape corresponding to the inclination of the flange.
By moving the roller to the inner periphery or the outer periphery side of the panel together with the support base, the panel itself can be adjusted in the vertical direction, the gap between the panel and the ceiling can be arbitrarily adjusted, and installation and maintenance are facilitated.
Further, the center of panel rotation is determined by the inclination of the flange, and the panel can be rotated without backlash. Furthermore, the roller and the flange are brought into close contact with each other by the inclination of the flange, and the panel is smoothly rotated.

  The invention according to claim 5 can be easily mounted when the panel is attached from below to the ceiling surface by the structure in which the panel is detachably attached to the housing from the opening side of the housing. Yes, maintainability is improved.

  According to a sixth aspect of the present invention, a rotatable vertical airflow direction plate disposed at a position corresponding to the panel outlet, a drive mechanism for driving the vertical airflow direction plate, and the panel are configured as one unit. Therefore, when the panel is attached from the lower side toward the ceiling surface, it is possible to easily attach the panel, and the maintainability is improved.

  In the invention according to claim 7, by providing a bell mouth on the back surface corresponding to the suction port of the panel, the gap between the panel and the bell mouth can be eliminated, and efficient suction can be performed. It is possible to improve the strength and prevent deflection.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail as examples based on the attached drawings.

FIG. 1 is a sectional view showing an embodiment of a ceiling-embedded air conditioner according to the present invention, FIG. 2 is a view of the air conditioner of FIG. 1 as viewed from below, and FIG. .
The ceiling-embedded air conditioner has a cylindrical casing 1 with an open bottom surface, an opening end of the casing 1 closed, a circular suction port 3a at the center, and four outlets 1k at the periphery thereof. And the exterior member is comprised by the circular panel 3 provided with the up-and-down wind direction board 3b corresponding to this. A decorative panel 1 i that is disposed on the outer periphery of the panel 3 and is mounted on the outer periphery of the housing 1 is used for blinding the suspended ceiling 2.

  In this housing 1, it is arranged in an air passage connecting the fixing metal fitting 1b suspended from the ceiling surface of the housing 1, the suction port 3a and the air outlet 1k, and a bottom portion is provided at the lower end of the fixing metal fitting 1b. A circular heat exchanger 1a hung from the ceiling surface of the housing 1 and a fan shaft 1c fixed from the fan motor 1c fixed at the center of the ceiling surface of the housing 1 are fixed to the periphery. A blower fan 1d for sending air exchanged by the heat exchanger 1a from the blower outlet 1k, a bell mouth 1f disposed between the suction port 3a of the panel 3 and the blower fan 1d, and a heat exchanger A dew tray 1e disposed at a lower portion of 1a and a heat insulating material 1m attached to the inner surface of the housing 1 are provided.

  As shown in FIG. 1, the bell mouth 1f is provided with a mounting portion 1f1 projecting from the outer periphery of the bell mouth 1f. The bell mouth 1f is fixed to the fixing bracket 1b by screwing with a screw. It has a structure. Although not shown, the bell mouth may be fixed to the back surface of the panel 3 without being fixed to the fixing bracket 1b. Thereby, the clearance between the panel 3 and the bell mouth 1f can be eliminated, efficient suction can be performed, the strength of the panel 3 can be improved, and the deflection can be prevented.

As shown in FIG. 2, the panel 3 is provided with an up / down wind direction plate 3b at a position corresponding to the air outlet 1k, and a rotating shaft 3b2 is fixed to a rib 3b1 extending from the back surface of the up / down wind direction plate 3b. The rotating shaft 3b2 is pivotally supported by a rib 3f extending from the back surface of the panel 3. Further, the rotating shaft 3b2 is connected to all four up-and-down air direction plates 3b by flexible wires 3g, and the end of the flexible wire 3g is connected to the rotation shaft of a motor 3h that drives the up-and-down air direction plates 3b. Therefore, all the vertical wind direction plates 3b can be driven simultaneously by the rotation of the motor 3h.
As described above, the panel 3 is composed of the drive mechanism including the rotatable up-and-down wind direction plate 3b disposed at the position corresponding to the outlet 1k of the panel 3, the motor 3h for driving the up-and-down wind direction plate 3b, and the panel 3. By constituting as a unit, when the panel is attached from below to the ceiling surface, it is possible to easily attach the panel, and the maintainability is improved.

  Since the present invention includes the up-and-down wind direction plate 3b and the drive mechanism thereof as one unit on the back surface of the panel 3 as described above, the panel 3 including the rotation mechanism of the panel 3 which will be described later is also included. It is easy to align and detach from the direction, and has a structure with improved maintainability.

In addition to such a structure, the present invention is characterized in that it includes four rotation mechanisms that rotate the panel 3 concentrically with the suction port 3a. This rotation mechanism is composed of a rotation part fixed to the back surface of the panel 3 and a fixed part fixed to the outer periphery of the open end of the dew pan 1 e or the housing 1.
Since a rotation mechanism composed of a rotation part fixed to the back surface of the panel and a fixed part fixed to the outer periphery of the opening end of the housing will be described in Example 2, here, as a first example, the panel 3 A rotating mechanism that is composed of a rotating part fixed to the back surface and a fixing part of the dew tray 1e will be described with reference to FIGS.

In FIG. 3, the fixed portion is composed of a ring-shaped rail 1 j having an L-shaped cross section that is fixed to the lower surface of the dew tray 1 e and is concentrically arranged with the suction port 3 a, and the rotating portion is the back surface of the panel 3. It is comprised from the roller 3d which is rotatably supported by the stay 3c erected and rolls on the rail 1j.
The roller 3d is made of, for example, hard rubber, and a screw 3j inserted through the through hole of the stay 3c is screwed into a rotation center on one side surface of the roller 3d and fixed. Therefore, the roller 3d has a structure that can freely rotate on the rail 1j. As a result, the entire panel 3 is suspended from the dew tray 1e and can rotate in the circumferential direction of the panel 3. Yes.

A motor 1g for rotating the entire panel 3 is fixed to a vertical surface of the mounting portion 1f1 projecting from the outer periphery of the bell mouth 1f, and a gear 1h is fixed to the rotation shaft. On the other hand, a rack 3e is provided in the circumferential direction of the panel 3 on the back surface of the panel 3 that is in mesh with the gear 1h, and the whole panel 3 is rotated by the rotation of the gear 1h.
When the panel 3 and the bell mouth 1f are fixed as described above, the motor 1g is preferably fixed to the lower surface of the dew pan 1e, for example, instead of the mounting portion 1f1 of the bell mouth 1f.

With this structure, the entire panel 3, that is, the air outlet 1 k can be directed in an arbitrary direction. Further, by performing the vertical driving of the vertical airflow direction plate 3 b described above, the entire air is blown into the room and the air outlet is blown out. By intermittent air blowing by 1k rotation, air blowing that does not give unpleasant feeling to a person in the room can be performed.
In addition, the heat exchanger 1a, the bell mouth 1f, and the dew tray 1e are suspended by a strong fixing bracket 1b, and the rail 1j is suspended by using this suspension structure. Since it is not necessary to provide a dedicated suspension mechanism for 1k, the cost can be reduced. Further, ventilation resistance due to a dedicated suspension mechanism does not occur.

  As shown by the dotted line in FIG. 2, the ring-shaped rail 1j is provided with a gap 3i that is slightly wider than the diameter of the roller 3d at every 90 degrees with the suction port 3a as the center. Since the roller 3d on the back surface of the panel 3 is also arranged at every 90 degrees, when the panel 3 is attached from below to the ceiling surface, the roller 3d is inserted through the gap 3i, and the panel 3 is placed on either the left or right side. Wear it by rotating it. With this structure, it is possible to easily attach the panel 3 and improve maintainability.

  Next, a rotation mechanism including a rotation portion fixed to the back surface of the panel and a fixed portion fixed to the outer periphery of the opening end of the housing will be described with reference to FIGS. 4 to 6. In addition, the same number is given about the same part as Example 1, and detailed description is abbreviate | omitted.

  As shown in FIG. 5, the panel 5 of this embodiment has a structure in which the panel of FIG. 2 and the decorative panel are integrated. Here, the part of the decorative panel of the first embodiment will be described as a decorative panel part 5i.

As shown in FIG. 6, the fixing portion of this embodiment is a flange 4a provided integrally on the outer periphery of the opening end of the sheet metal constituting the housing 4, and the rotating portion is on the back surface of the decorative panel portion 5i. It comprises a roller 5d that is pivotally supported by a support base 5b having an L-shaped cross section provided on and that rolls on the flange 4a.
The flange 4a is formed with an inclined cross section, and the roller 5d is formed in a truncated cone shape corresponding to the inclination of the flange 4a.

On the other hand, the surface of the decorative panel portion 5i is provided with an oblong recess 5f on which the head of the screw 5h slides. Further, the recess 5f has a length slightly wider than the diameter of the screw 5h. A hole 5g is provided.
The bottom surface of the support base 5b is provided with a screw hole corresponding to the screw 5h. When the screw 5h is completely screwed, the support base 5b is completely fixed to the decorative panel portion 5i, and the screw 5h is slightly loosened. The support 5b can be slid to the left and right by being screwed to the left and right.

  Accordingly, when the panel 5 is attached from below to the ceiling surface, the support base 5b is slid in the outer peripheral direction of the decorative panel portion 5i, and the panel 5 is held at a predetermined position at the opening end of the housing 4. Then, the support base 5b is slid in the inner peripheral direction of the decorative panel portion 5i, and the screw 5h is completely screwed. With this structure, it is possible to easily attach the panel 5 and improve maintainability. Although not shown, if the support 5b is arranged at three locations in the circumferential direction of the panel 5 (at an angle of 120 degrees), the support 5b is fixed at two locations and only the remaining one is provided. Can be semi-fixed, so that the mounting becomes easier.

  The roller 5d shown at the right end in FIG. 4 is made of, for example, hard rubber, and a screw 5j inserted through the through hole of the support base 5b is screwed into the rotation center of the surface having a large diameter, and is rotatably supported. ing. Accordingly, the roller 5d has a structure that can freely rotate on the flange 4a. As a result, the entire panel 5 is suspended from the outer periphery of the housing 4 and can rotate in the circumferential direction of the panel 5. It has become. In this embodiment, the same structure is provided at three locations in the circumferential direction.

  As shown in FIG. 6, the motor 5c for rotating the panel 5 is fixed to the vertical surface of the support base 5b. On the other hand, the roller 5d is made of, for example, hard rubber. The rotating shaft 5e of the motor 5c inserted through the hole is inserted and fixed at the rotation center of the surface having a large diameter.

  Therefore, if this motor 5c is rotated, the entire panel 5, that is, the outlet 5k can be directed in an arbitrary direction, and further, the above-described vertical driving of the vertical airflow direction plate 3b is performed together, so that the entire interior is indoors. While the air is blown, the air can be blown without causing discomfort to the person in the room by intermittent air blown by the rotation of the air outlet 5k.

Further, since the panel 5 is suspended by using the strong metal sheet 4 of the housing 4, it is not necessary to provide a dedicated suspension mechanism at the suction port 5a or the outlet 5k, so that the cost can be reduced. Further, ventilation resistance due to a dedicated suspension mechanism does not occur.
In Example 1, the drive mechanism must be disposed under the dew pan. However, in Example 2, since this space is unnecessary, the height of the heat exchanger is increased to improve the heat exchange efficiency. be able to.

  Furthermore, since the roller 5d is formed in a truncated cone shape corresponding to the inclination of the flange 4a, the center of rotation of the panel 5 is determined by the inclination of the flange 4a, and the panel can be rotated without backlash. Further, the weight of the entire panel 5 becomes a load between the roller 5d and the flange 4a due to the inclination of the flange 4a. The two are brought into close contact with each other by the load, and the panel 5 is smoothly rotated.

  Moreover, the clearance gap between the back surface of the decorative panel part 5i and the surface of the suspended ceiling 2 can be adjusted with this inclination and the support stand 5b which slides. That is, if the support base 5b is slid on the inner periphery of the panel 5, the entire panel 5 is raised, and if the support base 5b is slid on the outer periphery of the panel 5, the entire panel 5 is lowered. With this structure, the above-described gap due to the mounting error of the housing 4 can be adjusted by the panel 5, so that workability in installation and maintenance is improved.

  In FIG. 5, in this embodiment, for convenience of explanation, the rotating portion is disposed at a position corresponding to the wide portion of the vertical wind direction plate 3b, but not between here and the adjacent vertical wind direction plate 3b. You may arrange. Thereby, since a rotation part can be arrange | positioned to the decorative panel part 5i with strong strength instead of the decorative panel part 5i with comparatively weak intensity | strength, the bending of a panel can be prevented.

FIG. 7 shows another embodiment of the rotating part. The same parts as those in the second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
The difference from FIG. 6 is that the support 5n has a U-shaped cross section and that the motor 5c and the roller 5m are arranged vertically. A thrust bearing 5o is provided between the roller 5m and the support 5n.

  With this structure, since the thrust bearing 5o receives the weight of the panel 5, no load is applied to the rotating shaft 5e of the motor 5c, and smooth rotation can be performed. Further, even when the total length of the motor 5c is long, there is a margin in the vertical direction, so that it is possible to cope without enlarging the decorative panel portion 5i. That is, the diameter of the air conditioner can be reduced.

  In Example 2 and Example 3 described above, a gap that is slightly wider than the diameter of the roller may be provided in the flange 4a of the housing (corresponding to the rail in Example 1) corresponding to the position of the roller ( Not shown). With this structure, as in the first embodiment, when the panel is attached from below to the ceiling surface, the roller can be inserted from this gap and the panel can be turned by turning the panel left or right. . With this structure, a structure for sliding the support base to the left and right becomes unnecessary, the panel can be easily mounted, and the maintainability is improved.

  Although not shown, the rail 1j of the first embodiment (corresponding to the flanges of the second and third embodiments) may be inclined. With this structure, as in the second and third embodiments, the center of panel rotation is determined by the inclination of the rail 1j, and panel rotation without backlash is possible. Further, the roller and the rail are brought into close contact with each other by the inclination of the rail 1j, and the panel is smoothly rotated.

1 is a side sectional view showing a first embodiment of a ceiling-embedded air conditioner according to the present invention. It is the figure which looked at the ceiling embedded type air conditioner of FIG. 1 by this invention from the downward direction. It is principal part sectional drawing of FIG. It is side sectional drawing which shows the 2nd Example of the ceiling embedded type air conditioner by this invention. It is the figure which looked at the ceiling-embedded air conditioner of FIG. 4 according to the present invention from below. It is principal part sectional drawing of FIG. It is principal part sectional drawing which shows the 3rd Example of the ceiling embedded type air conditioner by this invention. It is side sectional drawing which shows the conventional ceiling embedded type air conditioner. It is the figure which looked at the ceiling embedded type air conditioner of FIG. 8 from the downward direction. It is a disassembled perspective view which shows the conventional ceiling embedded type air conditioner.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing | casing 1a Heat exchanger 1b Fixing metal fitting 1c Fan motor 1d Blower fan 1e Dew tray 1f Bell mouth 1f1 Mounting part 1g Motor 1h Gear 1i Cosmetic panel 1j Rail 1k Outlet 1m Thermal insulation 2 Suspended ceiling 3 Panel 3a Top and bottom 3b Suction port 3b Wind direction plate 3b1 Rib 3b2 Rotating shaft 3c Stay 3d Roller 3e Rack 3f Rib 3g Flexible wire 3h Motor 3i Gap 3j Screw 4 Housing 4a Flange 5 Panel 5a Suction port 5b Support base 5c Motor 5d Roller 5e Roller 5e Roller 5e Roller 5e Roller 5e 5h Screw 5i Decorative panel 5j Screw 5k Outlet 5m Roller 5n Support base 5o Thrust bearing

Claims (7)

Fixed to the lower part of the heat exchanger that surrounds the cylindrical housing that opens the bottom surface, the blower fan that is driven by the fan motor that hangs down from the center of the housing, and the blower fan. A panel with a dew pan, a circular suction port located below the centrifugal fan, and a blower outlet at the periphery, and a concentric rotation with the suction port. And a rotating mechanism
The pivot mechanism is composed of a pivot part fixed to the back surface of the panel and a fixed part disposed on the outer periphery of the open end of the casing or the casing. Air conditioner.   The fixed part is fixed to the lower surface of the dew pan and is formed of a ring-shaped rail arranged concentrically with the suction port, and the rotating part rotates on a stay standing on the back surface of the panel 2. The ceiling-embedded air conditioner according to claim 1, wherein the ceiling-embedded air conditioner comprises a roller that is freely pivoted and rolls on the rail.   The fixed portion is formed of a flange provided on the outer periphery of the opening end of the housing, and the rotating portion is pivotally supported by a support base provided on the outer peripheral back surface of the panel. The ceiling-embedded air conditioner according to claim 1, comprising a roller that rolls.   The ceiling-embedded air conditioner according to claim 3, wherein the flange is formed with an inclined cross section, and the roller has a truncated cone shape corresponding to the inclination of the flange.   The ceiling-embedded air conditioner according to any one of claims 1 to 4, wherein the panel is detachably attached to the casing from the opening side of the casing.   A rotatable upper and lower wind direction plate arranged at a position corresponding to the outlet of the panel, a drive mechanism for driving the upper and lower wind direction plate, and the panel are configured as one unit. The ceiling-embedded air conditioner according to any one of claims 1 to 5.   The ceiling-embedded air conditioner according to any one of claims 1 to 6, wherein a bell mouth is provided on a back surface corresponding to the suction port of the panel.

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