JP6804331B2 - Air conditioner - Google Patents

Description

An embodiment of the present invention relates to a ceiling-embedded air conditioner.

The ceiling-embedded air conditioner includes an indoor unit installed behind the ceiling and a square ceiling panel attached to the lower end of the indoor unit. The ceiling panel is exposed in the room to be air-conditioned so as to follow the ceiling surface, and the edge defining the outer shell of the ceiling panel is in contact with the ceiling surface.

The ceiling panel includes a suction grill that sucks in the air in the room and four outlets that are located around the suction grill. The air outlet has an elongated opening shape extending along the edge of the ceiling panel, and the air outlet is provided with a louver that changes the blowing direction of cold air or hot air.

The louver has an elongated shape that matches the opening shape of the air outlet, and is rotatably supported by the ceiling panel between a closing position for closing the air outlet and an opening position for opening the air outlet. When the louver is rotated to the closed position, the louver is horizontal and is located on the same plane as the ceiling panel.

International Publication No. 2015/111281

According to a conventional air conditioner, the air outlet is located between the edge of the ceiling panel and the suction grill, and the opening side edge of the air outlet is offset toward the suction grill from the edge of the ceiling panel. There is.

Since the louver is arranged inside the air outlet, the boundary line between the opening side edge of the air outlet and the louver is exposed on the ceiling panel when the louver is rotated to the closed position. It becomes.

As a result, when looking up at the ceiling panel from the room, the boundary line between the air outlet and the louver is easily noticeable, and there is room for improvement in the appearance and design of the ceiling panel.

Moreover, the ceiling panel is exposed indoors even when the louver closes the air outlet. Therefore, in order to maintain a good appearance of the ceiling panel, it is necessary to perform a special finishing process on the ceiling panel, which is one of the factors leading to an increase in the cost of the air conditioner.

An object of the present invention is to obtain an air conditioner capable of maintaining a good appearance while reducing the cost of a ceiling panel.

According to the embodiment, the air conditioner is attached to the indoor unit installed behind the ceiling and the lower end of the indoor unit so as to overlap the ceiling surface, and a panel having an air outlet for blowing air into the space to be air-conditioned. A ceiling panel having one portion and a louver having a flat shape rotatably supported by the ceiling panel between a closing position for closing the air outlet and an opening position for opening the air outlet. There is.
The panel piece portion of the ceiling panel has an edge portion that defines the outer shell of the ceiling panel at a position separated from the air outlet. The louver has a size that completely covers the panel piece from below in a state of being rotated to the closed position, and air blown out from the outlet when the louver is rotated to the open position. A wind direction guide rising from the tip edge is provided at the tip edge of the louver located at the downstream end along the flow direction of the louver. In the state where the louver is rotated to the closed position, the wind direction guide covers the edge portion of the panel piece portion. In the state where the louver is rotated to the closed position, the upper end of the wind direction guide faces the ceiling surface.

It is a perspective view of the ceiling-embedded type air conditioner which concerns on 1st Embodiment. It is a perspective view of the air conditioner which shows the state which the indoor unit and the ceiling panel are separated from each other. It is a perspective view of the air conditioner which shows the state which the louver is rotated to the open position. It is a perspective view of the ceiling panel used in the air conditioner of 1st Embodiment. It is a top view of the ceiling panel used in the air conditioner of 1st Embodiment. It is a perspective view of the louver used in the air conditioner of 1st Embodiment. It is sectional drawing which shows the positional relationship between a louver and an outlet when a louver is rotated to a closed position. It is sectional drawing which shows the positional relationship between a louver and an air outlet when a louver is rotated to an open position. In the second embodiment, it is sectional drawing which shows the positional relationship between a louver and an air outlet when a louver is rotated to an open position.

[First Embodiment]
Hereinafter, the first embodiment will be described with reference to FIGS. 1 to 8.

FIG. 1 is a perspective view of a ceiling-embedded air conditioner, and FIG. 2 is a perspective view showing a state in which the indoor unit and the ceiling panel are separated from each other.

As shown in FIGS. 1 and 2, the air conditioner 1 includes an indoor unit 2 installed behind the ceiling and a ceiling panel 3 attached to the lower end of the indoor unit 2 as main elements. The indoor unit 2 is inserted into the opening 4a (shown in FIG. 7) opened in the ceiling 4 from the indoor side to be air-conditioned, and is inserted from, for example, a beam behind the ceiling via a plurality of hanging bolts (not shown). It is hung.

The indoor unit 2 includes a sheet metal casing 5. The casing 5 is a box-shaped element that is opened downward, and has a side surface portion 5a that is continuous in the circumferential direction of the casing 5. Further, hanging metal fittings 6 are fixed to the four corners of the side surface portions 5a of the casing 5, respectively. The hanging metal fitting 6 projects horizontally from the side surface portion 5a of the casing 5, and the lower end of the hanging bolt is connected to the hanging metal fitting 6.

As shown in FIG. 2, the blower 7 is housed inside the casing 5. As the blower 7, a so-called centrifugal fan that sucks in air from the axial direction and discharges it in the circumferential direction is used. Since the upper end of the blower 7 is covered with the top plate of the casing 5, the lower end of the blower 7 is on the suction side.

A drain pan 8 is provided at the lower end of the casing 5. The drain pan 8 is an element that receives drain water dripping from a heat exchanger (not shown) arranged around the blower 7, and is exposed from the lower end portion of the casing 5.

The drain pan 8 has a circular opening 9. The opening 9 is located in the center of the drain pan 8. The bell mouth 10 is fitted in the opening 9 of the drain pan 8. The bell mouth 10 constitutes a suction port 11 connected to the suction side of the blower 7. The suction port 11 is located at the center of the lower end of the casing 5.

Further, the drain pan 8 has four peripheral edges surrounding the suction port 11. Four notches 12 are formed on the peripheral edge of the drain pan 8 to guide the air that has passed through the heat exchanger. Each of the notches 12 has an elongated shape extending along the peripheral edge of the drain pan 8. The notch portions 12 adjacent to each other in the circumferential direction of the drain pan 8 are maintained in a positional relationship so as to be orthogonal to each other.

The ceiling panel 3 is an element that covers the indoor unit 2 from the room, and is arranged in a posture along the ceiling surface 4b of the ceiling 4. The ceiling surface 4b is exposed in the room to be air-conditioned. As shown in FIGS. 2, 3 and 4, the ceiling panel 3 includes a suction grill 15 and a frame body 16. The suction grill 15 is located at the center of the ceiling panel 3.

The suction grill 15 includes a square outer frame portion 17 and a lattice portion 18 surrounded by the outer frame portion 17. The four side portions defining the outer frame portion 17 are formed in an elongated flat plate shape having a predetermined width. The grid portion 18 is located directly below the suction port 11 and has a removable filter.

As shown in FIGS. 4 and 5, the frame 16 of the ceiling panel 3 is a square element surrounding the suction grill 15, and a gap between the opening 4a of the ceiling 4 and the indoor unit 2 is formed in the room. It is covered from the side.

The frame body 16 includes first to fourth panel pieces 21a, 21b, 21c, 21d and first to fourth corner parts 22a, 22b, 22c, 22d. The first to fourth panel pieces 21a, 21b, 21c, and 21d have a straight shape along the four sides of the outer frame portion 17 of the suction grill 15. Adjacent first to fourth panel pieces 21a, 21b, 21c, 21d are maintained in a positional relationship so as to be orthogonal to each other.

The first to fourth corner portions 22a, 22b, 22c, 22d are located at the four corners of the ceiling panel 3, and the first to fourth panel pieces 21a, 21b, 21c adjacent to each other in the circumferential direction of the frame body 16 , 21d are integrally connected.

Specifically, as shown in FIG. 5, the first corner portion 22a connects the first panel piece portion 21a and the fourth panel piece portion 21d. The second corner portion 22b connects the first panel piece portion 21a and the second panel piece portion 21b. The third corner portion 22c connects the second panel piece portion 21b and the third panel piece portion 21c. The fourth corner portion 22d connects the third panel piece portion 21c and the fourth panel piece portion 21d.

From this, it can be rephrased that the first to fourth corner portions 22a, 22b, 22c, 22d are examples of the end portions continuous with the first to fourth panel piece portions 21a, 21b, 21c, 21d. it can. Therefore, the first to fourth panel pieces 21a, 21b, 21c, 21d are framed in a square shape via the first to fourth corner portions 22a, 22b, 22c, 22d.

As shown in FIGS. 2 to 5, the first to fourth panel pieces 21a, 21b, 21c, 21d each have straight edges 23a, 23b, 23c, 23d. The edge portions 23a, 23b, 23c, and 23d adjacent to each other in the circumferential direction of the frame portion 16 are maintained in a positional relationship so as to be orthogonal to each other.

Further, the first to fourth corner portions 22a, 22b, 22c, 22d each have edge portions 24a, 24b, 24c, 24d bent at right angles. The edges 23a, 23b, 23c, 23d and the edge 24a, 24b, 24c, 24d cooperate with each other to define the outer shell of the ceiling panel 3.

As shown in FIG. 4, in the suction grill 15 of the present embodiment, one side portion of the outer frame portion 17 is selectively rotated to any one of the first to fourth panel pieces 22a, 22b, 22c, and 22d. It is movably connected. Therefore, the suction grill 15 can be rotated downward with respect to the frame body 16 of the ceiling panel 3. As a result, daily maintenance work such as removing the filter from the grid portion 18 of the suction grill 15 for cleaning or replacing the filter can be performed.

As shown in FIG. 3, the ceiling panel 3 has four outlets 26 that blow out the air that has passed through the heat exchanger into the room. The air outlet 26 is formed in the first to fourth panel pieces 21a, 21b, 21c, 21d of the frame body 16 so as to face the four notches 12 of the drain pan 8.

The air outlet 26 has an elongated opening shape extending along the first to fourth panel pieces 22a, 22b, 22c, 22d. Further, the outlet 26 is closer to the outer frame portion 17 of the suction grill 15 than the edges 23a, 23b, 23c, 23d of the first to fourth panel pieces 22a, 22b, 22c, 22d. As a result, the outlet 26 is opened above the first to fourth panel pieces 22a, 22b, 22c, 22d at positions separated from the edges 23a, 23b, 23c, 23d.

As shown in FIGS. 1 to 5, four louvers 27 are supported by the frame body 16 of the ceiling panel 3. The louver 27 is an element that changes the blowing direction of the air blown from the air outlet 26 toward the room, and has a common configuration with each other. Therefore, in the present embodiment, the louvers 27 corresponding to the outlet 26 of the first panel piece 21a will be described as a representative, and the other louvers 27 will be designated by the same reference numerals and the description thereof will be omitted. ..

As best shown in FIGS. 6 and 7, the louver 27 is a flat thin plate having a size that completely covers the first panel piece 21a of the frame body 16 from below. There is. That is, the louver 27 is extended from the main portion 27a facing the outlet 26 and the edge portion 23a of the first panel piece portion 22a in a state parallel to the first panel piece portion 21a. The extension portion 27b and the like are included.

Further, the louver 27 includes a decorative surface 28a exposed indoors, a back surface 28b located on the back side of the decorative surface 28a, and a first side edge 28c and a second side edge 28d extending in the longitudinal direction of the louver 27. And a first edge 29a and a second edge 29b extending in the width direction of the louver 27.

The decorative surface 28a and the back surface 28b are flat surfaces, respectively. The first side edge 28c and the second side edge 28d extend straight in the longitudinal direction of the louver 27 and are arranged in parallel with each other in the width direction of the louver 27 at intervals. The first edge 29a and the second edge 29b extend straight in the width direction of the louver 27 and are arranged parallel to each other in the longitudinal direction of the louver 27 at intervals. Therefore, the louver 27 is formed in a rectangular shape in which all four corners are right angles.

As shown in FIG. 6, a support wall 31a is formed on the first edge 29a of the louver 27. Similarly, another support wall 31b is formed on the second edge 29b of the louver 27. The support walls 31a and 31b are erected from the back surface 28b of the louver 27 so as to face each other in the longitudinal direction of the louver 27.

Axis 32a and 32b are provided on the outer surfaces of the support walls 31a and 31b, respectively. The pivots 32a and 32b project in opposite directions from the outer surfaces of the support walls 31a and 31b so as to be coaxially located on the horizontal line O1 along the longitudinal direction of the louver 27.

The pivots 32a and 32b of the louver 27 are rotatably supported by the first corner portion 22a and the second corner portion 22b located on both sides of the first panel piece portion 21a via bearings (not shown). .. Further, one pivot 32a is connected to a motor (not shown). Therefore, the louver 27 is rotatably supported by the frame body 16 between the closed position and the open position around the pivots 32a and 32b.

1 and 7 show a state in which the louver 27 is rotated to the closed position. In the closed position, the louver 27 lies horizontally under the first panel piece 21a so as to close the air outlet 26, and completely covers the first panel piece 21a from below.

3 and 8 show a state in which the louver 27 is rotated to the open position. In the open position, the louver 27 stands so as to open the air outlet 26. That is, the main portion 27a and the first side edge 28c of the louver 27 enter the air outlet 26, and the extension portion 27b is tilted so as to protrude downward from the first panel piece portion 21a. In the state where the louver 27 is rotated to the open position, the second side edge 28d of the louver 27 can be rephrased as a tip edge located at the downstream end along the flow direction of the air blown from the outlet 26 with respect to the louver 27. it can.

As shown in FIGS. 6 to 8, the reinforcing portion 34 is integrally formed on the back surface 28b of the louver 27. The reinforcing portion 34 is located in the middle portion of the back surface 28b of the louver 27 so as to correspond to the main portion 27a of the louver 27. When the louver 27 is rotated to the open position, the reinforcing portion 34 enters the inside of the air outlet 26.

The reinforcing portion 34 has a flat blade plate 35. The blade plate 35 extends in a straight line along the first side edge 28c of the louver 27. Further, standing portions 36a and 36b bent at right angles toward the back surface 28b of the louver 27 are formed at both ends along the longitudinal direction of the blade plate 35. The upright portions 36a and 36b extend in the width direction of the louver 27, and their lower ends are connected to the back surface 28b of the louver 27.

Therefore, the blade plate 35 is arranged in parallel with the back surface 28b of the louver 27, and a narrow air passage 37 is formed between the blade plate 35 and the back surface 28b of the louver 27.

A plurality of ribs 38 are arranged in the air passage 37. The ribs 38 extend in the width direction of the louver 27 and are arranged at intervals in the longitudinal direction of the louver 27. The rib 38 connects the blade plate 35 and the back surface 28b of the louver 27.

The louver 27 of the present embodiment includes a wind direction guide 40 that rises from the second side edge 28d. The wind direction guide 40 is an element bent upward at a right angle from the second side edge 28d of the louver 27, and has an outer surface 40a orthogonal to the decorative surface 28a of the louver 27 and an inner surface 40b orthogonal to the back surface 28b. There is. The wind direction guide 40 extends over the entire length of the louver 27. The height H1 of the wind direction guide 40 is kept constant over the entire length of the louver 27.

As shown in FIG. 7, when the louver 27 is rotated to the closed position, the wind direction guide 40 of the louver 27 covers the edge portion 23a of the first panel piece portion 21a. Therefore, as long as the louver 27 is rotated to the closed position, the first panel piece 21a is covered by the louver 27 so as not to be exposed indoors. This point is the same for the second to fourth panel pieces 21b, 21c, 21d.

In addition, when the louver 27 is rotated to the closed position, the upper end of the wind direction guide 40 faces the ceiling surface 4b, and a slight gap g is formed between the upper end of the wind direction guide 40 and the ceiling surface 4b. There is.

As shown in FIGS. 1 to 5, the first to fourth corner portions 22a, 22b, 22c, and 22d of the frame body 16 are each covered with a removable decorative cover 41. The decorative cover 41 has a flat shape that completely covers the first to fourth corner portions 22a, 22b, 22c, and 22d from below.

An upright wall 42 that rises upward is formed on the outer peripheral edge of the decorative cover 41. The upright wall 42 covers the edge portions 24a, 24b, 24c, 24d of the first to fourth corner portions 22a, 22b, 22c, 22d. The height H2 of the upright wall 42 is the same as the height H1 of the wind direction guide 40 of the louver 27. In the present embodiment, when the louver 27 is rotated to the closed position, the wind direction guide 40 of the louver 27 cooperates with the upright wall 42 of the decorative cover 41 to surround the frame body 16 and the decorative surface 28a of the louver 27. Is flush with the decorative cover 41.

Therefore, when the louver 27 closes the air outlet 26, what can be seen from the room is only the suction grill 15, the four louvers 27, and the four decorative covers 41, and the frame 16 of the ceiling panel 3 is exposed indoors. There is no.

The frame body 16 of the ceiling panel 3, the outer frame portion 17 and the lattice portion 18, the louver 27, and the decorative cover 41 of the suction grill 15 are made of a synthetic resin material. It is desirable that the outer frame portion 17, the lattice portion 18, the louver 27, and the decorative cover 41 have the same color in order to enhance the sense of unity.

In the first embodiment, when the air conditioner 1 is in the cooling operation, the louver 27 guides the cold air blown from the air outlet 26 in the horizontal direction along the ceiling surface 4b. On the contrary, when the air conditioner 1 is in the heating operation, the louver 27 guides the warm air blown from the outlet 26 toward the lower side of the ceiling surface 4b.

The louver 27 has a size that completely covers the first to fourth panel pieces 21a, 21b, 21c, 21d in which the air outlet 26 is opened when the louver 27 is rotated to the closed position from below. .. Specifically, the louver 27 has an extension portion 27b extending from the main portion 27a facing the air outlet 26 toward the edge portions 23a, 23b, 23c, 23d that define the outer shell of the frame body 16, and the edge portion 23a,. It has a wind direction guide 40 that covers 23b, 23c, and 23d.

Therefore, in the state where the louver 27 is rotated to the closed position, the first to fourth panel pieces 21a, 21b, 21c, 21d of the frame body 16 are covered by the louver 27, and the louver 27 and the air outlet are covered. Boundaries that indicate the boundary with 26 are eliminated.

In addition, in the state where the louver 27 is rotated to the closed position, the decorative surface 28a of the louver 27 is flush with the decorative cover 41 covering the first to fourth corner portions 22a, 22b, 22c, 22d of the frame body 16. Continue to.

Therefore, as long as the louver 27 is rotated to the closed position, the ceiling panel 3 is not exposed indoors, and a simple and smart appearance can be obtained when the air conditioner 1 is looked up from the room.

Further, the first to fourth corner portions 22a, 22b, 22c, 22d of the ceiling panel 3 are covered with a decorative cover 41 except during maintenance. The first to fourth panel pieces 21a, 21b, 21c, 21d of the ceiling panel 3 are only exposed indoors from between the decorative covers 41 when the louver 27 is rotated to the open position. Therefore, it is not necessary to perform a special finishing process on the frame body 16 of the ceiling panel 3 to maintain the appearance, and the cost of the air conditioner 1 can be reduced.

According to the present embodiment, as shown in FIG. 8, when the louver 27 is rotated to the open position, the air blown out from the outlet 26 flows along the decorative surface 28a and the back surface 28b of the louver 27. The louver 27 has an extension portion 27b extended from the main portion 27a, and the extension portion 27b has an edge portion 23a of the first to fourth panel pieces 21a, 21b, 21c, 21d under the outlet 26. It projects diagonally toward 23b, 23c, and 23d.

Therefore, the main flow of air from the outlet 26 toward the back surface 28b of the louver 27 can be reliably placed on the back surface 28b of the louver 27, and the direction of air blowout from the outlet 26 is adjusted according to the inclination angle of the louver 27. It can be easily controlled.

At the same time, in the state where the louver 27 is rotated to the open position, the air guided by the back surface 28b of the louver 27 reaches the edges 23a, 23b, 23c, 23d which are the downstream ends of the louver 27. It hits the wind direction guide 40 rising from the edges 23a, 23b, 23c, 23d.

As a result, the air guided diagonally downward from the outlet 26 along the inclined louver 27 hits the wind direction guide 40 as shown by an arrow in FIG. 8, and the blowing direction is changed horizontally. Therefore, the opening degree of the louver 27 can be widened to sufficiently secure the amount of air blown into the room, and the air can be guided in the substantially horizontal direction along the ceiling surface 4b, so that the draft feeling can be alleviated.

Moreover, since the decorative surface 28a and the back surface 28b of the louver 27 stand up by increasing the opening degree of the louver 27, the mainstream of the air blown out from the outlet 26 flows along both the decorative surface 28a and the back surface 28b of the louver 27. .. In other words, the decorative surface 28a and the back surface 28b of the louver 27 are wrapped by the flow of air blown out from the outlet 26.

As a result, the temperature difference between the decorative surface 28a and the back surface 28b of the louver 27 becomes small, and it is possible to prevent dew condensation due to the temperature difference on the louver 27, particularly during the cooling operation in which cold air is blown from the air outlet 26.

According to this embodiment, the louver 27 has a reinforcing portion 34 on the back surface 28b. A part of the air blown out from the air outlet 26 passes through the air passage 37 between the blade plate 35 and the back surface 28b. Since the air passage 37 is defined by a gap corresponding to the height of the upright portions 36a and 36b of the blade plate 35, the air passage area is narrowed inside the air outlet 26. Therefore, the flow of air passing through the air passage 37 is forcibly throttled, and the flow velocity of the air increases. Therefore, the air passing through the air passage 37 has strong directivity and becomes a component that reaches a long distance.

Further, due to the presence of the reinforcing portion 34, the strength of the louver 27 can be ensured even if the wall thickness of the louver 27 is reduced to some extent. Therefore, the warp of the louver 27 can be prevented, the flatness of the decorative surface 28a of the louver 27 can be maintained, and the appearance of the louver 27 can be maintained well.

[Second Embodiment]
FIG. 9 discloses a second embodiment. In the second embodiment, the shape of the wind direction guide 40 of the louver 27 is different from that of the first embodiment, and the configuration of the air conditioner 1 other than that is the same as that of the first embodiment.

As shown in FIG. 9, the wind direction guide 40 has an inner surface 50 continuous with the back surface 28b of the louver 27. The inner surface 50 is curved so as to draw a smooth arc without being orthogonal to the back surface 28b.

According to the second embodiment, the air blown diagonally downward from the outlet 26 along the inclined louver 27 hits the curved inner surface 50 of the wind direction guide 40, so that the blowing direction is changed horizontally. Therefore, the air flow direction can be changed smoothly, and the wind noise can be suppressed low.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

1 ... Air conditioner, 2 ... Indoor unit, 3 ... Ceiling panel, 4b ... Ceiling surface, 11 ... Suction port, 15 ... Suction grill, 16 ... Frame, 21a, 21b, 21c, 21d ... 1st to 4th Panel piece, 23a, 23b, 23c, 23d ... edge, 26 ... suction port, 27 ... louver, 40 ... wind direction guide.

Claims (11)

An indoor unit that can be installed behind the ceiling
A ceiling panel that is attached to the lower end of the indoor unit so as to overlap the ceiling surface and has a panel piece having an air outlet that blows air into the space to be air-conditioned.
A louver that is supported by the ceiling panel and is rotatable between a closed position that closes the air outlet and an open position that opens the air outlet and has a flat shape is provided.
The panel piece portion of the ceiling panel has an edge portion that defines the outer shell of the ceiling panel at a position separated from the air outlet.
The louver has a size that completely covers the panel piece from below in a state of being rotated to the closed position, and air blown out from the outlet when the louver is rotated to the open position. A wind direction guide rising from the tip edge is provided at the tip edge of the louver located at the downstream end along the flow direction of the louver.
In the state where the louver is rotated to the closed position, the wind direction guide covers the edge portion of the panel piece and also
An air conditioner in which the upper end of the wind direction guide faces the ceiling surface when the louver is rotated to the closed position . The air conditioner according to claim 1 , wherein a gap is formed between the upper end of the wind direction guide and the ceiling surface. The ceiling panel includes an end portion continuous with the panel piece portion and a removable decorative cover that completely covers the end portion from below, and the end portion of the ceiling panel is a panel piece portion. The decorative cover has an edge portion that defines the outer shell of the ceiling panel in cooperation with the edge portion, and the decorative cover has a flat shape and is an upright wall that covers the edge portion on the outer peripheral edge of the decorative cover. The air conditioner according to claim 1 or 2 , wherein the air conditioner is formed. 3. The louver has a decorative surface exposed in the space to be air-conditioned, and when the louver is rotated to the closed position, the decorative surface is flush with the decorative cover. The air conditioner described in. The air conditioner according to claim 3 or 4 , wherein the height of the wind direction guide of the louver is the same as the height of the upright wall of the decorative cover. The air conditioner according to claim 5 , wherein the wind direction guide extends over the entire length along the longitudinal direction of the louver, and the height of the wind direction guide is constant over the entire length of the louver. The louver includes a back surface located on the back side of the decorative surface and a reinforcing portion provided in an intermediate portion along the longitudinal direction of the back surface, and the reinforcing portion is a blade plate facing the back surface of the louver. The air conditioner according to claim 1, wherein an air conditioner is provided between the blade plate and the back surface of the louver through which air blown from the outlet passes. The air conditioner according to claim 7 , wherein a plurality of ribs supporting the blade plate are provided in the air passage. An indoor unit that is installed behind the ceiling and has a suction port that opens downward.
An air conditioner including a ceiling panel attached to the lower end of the indoor unit so as to overlap the ceiling surface.
The ceiling panel
A suction grill that covers the suction port from below,
A frame body having four panel pieces surrounding the suction grill and having an air outlet for blowing air into the space to be air-conditioned in each panel piece.
Includes four louvers that are supported by the frame and are rotatable between a closed position that closes the outlet and an open position that opens the outlet and have a flat shape.
The panel piece portion of the ceiling panel has an edge portion that defines the outer shell of the ceiling panel at a position separated from the air outlet.
Each louver has a size that completely covers each panel piece from below in a state of being rotated to the closed position, and when the louver is rotated to the open position, from the air outlet. A wind direction guide rising from the tip edge is provided at the tip edge of the louver located at the downstream end along the flow direction of the blown air.
In a state where each louver is rotated to the closed position, the wind direction guide covers the edge portion of the panel piece and also
An air conditioner in which the upper end of the wind direction guide faces the ceiling surface when the louver is rotated to the closed position . The ceiling panel further includes four corner portions connecting the adjacent panel pieces and four decorative covers having a size that completely covers the corner portions from below, and the corner portion of the ceiling panel. Each has an edge portion that defines the outer shell of the ceiling panel in cooperation with the edge portion of the panel piece, and each of the decorative covers has a flat shape and an outer peripheral edge of the decorative cover. The air conditioner according to claim 9 , wherein an upright wall covering the edge portion is formed therein. Each of the louvers has a decorative surface exposed to the space to be air-conditioned, and when the louver is rotated to the closed position, the decorative surface is flush with the decorative cover. 10. The air conditioner according to 10 .

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