JP6375837B2 - Embedded ceiling air conditioner - Google Patents

Description

  The present invention relates to a ceiling-embedded air conditioner in which a casing is embedded in a ceiling, and more particularly to a structure of an air outlet and a wind direction plate.

  A ceiling-embedded air conditioner has a box-shaped housing that includes a heat exchanger and a blower fan (turbo fan) embedded in the ceiling, and is sucked from a suction grill on a decorative panel attached below the housing. It is an air conditioner that exchanges heat with refrigerant in a heat exchanger, adjusts the air direction from the air outlet with a wind direction plate, and sends it out indoors. It is used in relatively large rooms such as offices and stores.

A conventional ceiling-embedded air conditioner has a suction grill provided at the center of a substantially rectangular decorative panel, and a rectangular air outlet is formed in a hole shape around each side of the square so as to close the air outlet. A wind direction plate was arranged in accordance with the shape of the outlet. The area around the air outlet was surrounded by a foamed heat insulating resin material to prevent condensation.
However, in this structure, the blown wind reaches in all directions, but not in the four corners of the ceiling-mounted air conditioner. (See Patent Document 1)

  Therefore, a blow-off passage is provided around the entire drain pan in the housing, a blow-out opening and an auxiliary blow-out opening are provided in the decorative panel, and air is blown out in all directions by arranging the blow-out opening and the auxiliary blow-out opening in a substantially octagonal shape. There is something that I made to reach. (See Patent Document 2)

JP 2000-213771 A (FIGS. 8 and 9) Japanese Patent No. 4052264

  However, providing many air outlets complicates the structure of the housing. In particular, since the drain pan is opened around the entire circumference and supported only by the reinforcing ribs, the strength is lowered. Moreover, it is difficult to ensure the space which surrounds each with a foam heat insulation resin material by having arrange | positioned the blower outlet and the auxiliary blower outlet in the substantially octagon. Furthermore, the number of parts is also increased by providing a wind direction plate at the auxiliary outlet.

  The present invention solves the above-described problems, and can provide omnidirectional blowing by providing a blowing passage and a wind direction plate for guiding the air blown from the blowing outlet to the corner of the decorative panel without providing an auxiliary blowing outlet. And providing a ceiling-embedded air conditioner that improves the assemblability by providing an integrated structure for preventing condensation, which is provided at the outlet, instead of being provided for each outlet. Objective.

In order to solve the above-described problem, the present invention includes a box-shaped casing embedded in a ceiling of an air-conditioning room, and a rectangular decorative panel that is attached to the lower surface of the casing and covers the ceiling. Is equipped with a blower fan and a heat exchanger surrounding the blower fan at the center of the inside, and a drain pan at the bottom, along the four sides of the box of the same housing and a suction port for taking air into the blower fan. In the ceiling-embedded air conditioner provided with a main body outlet for blowing out heat-exchanged air, and provided on the decorative panel with an inlet grille that matches the inlet and an outlet that matches the main body outlet,
The decorative panel is provided with a recess around each of the air outlets, and a continuous passage is formed to form an outlet passage, which is longer than the long side of the air outlet along each side of the decorative panel. In addition, a wind direction plate is provided to cover the blowing passage, and four L-shaped panel heat insulating member pieces are combined and attached to the suction grille side of the blowing passage to form a panel heat insulating member,
The panel heat insulating member pieces engage with each other in the vicinity of the end of the air outlet, and the panel heat insulating member is sandwiched and fixed between a suction grille frame that receives the suction grille and the decorative panel. To do.

In the ceiling-embedded air conditioner of the present invention configured as described above, when the wind direction plate rotates and the suction grille side of the wind direction plate moves into the blowing passage, the air blown out from the outlet is the wind direction plate. The air is guided to the corners of the blowing passage along the blowing passage, and merges with the air guided from the adjacent wind direction plates at the corner of the blowing passage. A panel heat insulating member is provided on the suction grill side of the outlet passage, and the merged air is blown to the outside on the side opposite to the panel heat insulating member, so that air is blown in all directions without providing an auxiliary outlet. The ceiling-embedded air conditioner efficiently air-conditions a large room.
In addition, the panel heat insulating member is formed by attaching four L-shaped panel heat insulating member pieces having the same shape to form a panel heat insulating member, which prevents condensation in the blowing passage and serves as a blowing guide.

In addition, by being sandwiched and fixed between the suction grille frame that receives the suction grille and the decorative panel, it is assembled in an integrated structure rather than being provided for each outlet, so that assemblability is improved and component costs are reduced. it can.
Furthermore, the panel heat insulating member pieces are engaged with each other in the vicinity of the end of the air outlet, so that even if a slight misalignment occurs in the joint, there is little influence on the air that is blown out. The joint is not conspicuous by being located in the place where the

It is an external view at the time of operation stop of a ceiling-embedded air conditioner. It is sectional drawing of a ceiling embedded type air conditioner, the right side shows the time of operation, and the left side shows the time of operation stop. It is an exploded view of a ceiling-embedded air conditioner. It is a front view at the time of operation stop of a ceiling-embedded air conditioner. It is an exploded view of the decorative panel of the ceiling-embedded air conditioner. It is an enlarged view at the time of the operation stop of FIG. It is explanatory drawing of a decorative panel, a motor, and a motor cover of a ceiling embedded type air conditioner. (A) is a perspective view, (b) is a plan view, (c) is a front view, (d) is a rear view, and (e) is an enlarged side view. (F) is an enlarged sectional view. It is an external view at the time of a driving | operation of a ceiling embedded type air conditioner. It is an enlarged view at the time of the driving | operation of FIG. It is explanatory drawing of the corner corner blowing part of a ceiling embedded type air conditioner. It is explanatory drawing at the time of rotation of the wind direction board of a ceiling embedded type air conditioner.

  DESCRIPTION OF EMBODIMENTS Hereinafter, modes for carrying out the present invention will be described in detail as examples based on the accompanying drawings, but the present invention is not limited to these.

<Embedded ceiling air conditioner>
A ceiling-embedded air conditioner 1 (hereinafter referred to as an air conditioner 1) according to the present invention shown in FIGS. 1 to 3 includes a box-shaped casing 10 embedded in a ceiling T of an air-conditioned room K, and the same casing. The rectangular decorative panel 3 is attached to the lower surface 101 of the body. The casing 10 is installed by suspending a plurality of suspension bolts embedded in a ceiling back wall (not shown) with a plurality of mounting brackets 12 provided on the side plate 11 of the casing 10. The decorative panel 3 is attached to the housing 10 by fixing a mounting portion 332 (described later) to the mounting bracket 12 from the air-conditioned room K side with a screw. Cover the ceiling surface T.

<Case>
The outer casing 10 is formed of a top plate 13 made of sheet metal and a side plate 11 extending downward from the outer periphery of the top plate 13. A heat insulating member 14 is provided on the inner peripheral surfaces of the top plate 13 and the side plate 11 as shown in FIG. A fan motor 21 is fixed inside the top plate 13 by screws, and a hub 23a of the blower fan 23 is pivotally supported on a shaft 22 extending downward from the fan motor 21. The blower fan 23 is a so-called turbo fan including a hub 23a, a shroud 23b, and a plurality of blades 23c. The blower fan 23 and the fan motor 21 are disposed approximately at the center inside the housing 10.

  As shown in FIGS. 2 and 3, the lower portion of the housing 10 is covered with a drain pan 60. The drain pan 60 includes a heat insulating member 61 and a drain pan plate 62 described later. A central portion of the drain pan 60 is opened and serves as a suction port 16. A bell mouth 24 that connects the suction port 16 and the blower fan 23 is disposed in the suction port 16. Further, an electrical component box 18 formed in an L shape is arranged on the suction port 16 side of the bell mouth 24 so as not to interfere with the air W passing through the suction port 16. An electrical component for controlling the air conditioner 1 is accommodated in the electrical component box 18.

  The indoor air W is sucked into the housing 10 from the suction port 16 by the blower fan 23 that is rotationally driven by the fan motor 21. The air W sucked into the casing 10 is guided to the blower fan 23 along the bell mouth 24 and blown out toward the outside of the blower fan 23.

  Around the blower fan 23, a heat exchanger 25 that surrounds the blower fan 23 and is sandwiched between the heat insulating member 14 and the drain pan 60 is disposed. The drain pan 60 that receives the lower part of the heat exchanger 25 has a drain pan plate 62 made of resin integrally formed with the heat insulating member 61 made of foamed resin on the surface facing the heat exchanger 25 and drain water generated by the heat exchanger 25. Take it. The drain water is discharged outside by a drain pump (not shown) and a drain pipe connected to the drain pump.

  The heat exchanger 25 is connected to a reversible refrigeration cycle circuit capable of a cooling operation and a heating operation (not shown), and cools the air W guided from the blower fan 23 by functioning as an evaporator during the cooling operation. During heating operation, it functions as a condenser and heats.

  The four main body outlets 15 between the heat exchanger 25 and the heat insulating member 14 around the side plate 11 and along each of the four sides of the casing 10 provided in the drain pan 60 allow the air W blown from the blower fan 23 to flow. It becomes the ventilation path 17 which guides to the blower outlet 31 of the decorative panel 3 mentioned later. The air W heat-exchanged with the refrigerant in the heat exchanger 25 passes through the air passage 17 and the main body outlet 15 and is blown out from the outlet 31 into the air-conditioned room K.

  In the present invention, air can be blown out in all directions by a blowout passage 32 and a corner corner blowout portion 36 described later without providing an auxiliary blowout as in the conventional example. Therefore, since there is no need to provide an opening for the auxiliary air outlet in the drain pan 60, the strength of the drain pan 60 can be maintained.

<Makeup panel>
As described above, the lower surface 101 of the housing 10 is a regular square frame plate shown in FIG. 4 and the periphery of the lower surface 101 of the housing 10 when the lower surface 101 of the housing 10 and the air conditioner 1 are attached to the ceiling surface T1. A decorative panel 3 covering the ceiling surface T1 is mounted. Note that the decorative panel and other quadrangular shapes described later include a shape whose corners are chamfered with arcs or straight lines. As shown in FIGS. 3 and 4, the decorative panel 3 includes a decorative panel body 30 that covers the ceiling surface T <b> 1 and includes an air outlet 31, a suction grill 40 that is detachably attached to the center of the decorative panel body 30, and a makeup Corner panel 41 covering corner 30a of panel main body 30, four wind direction plates 5 attached to outlet 31 of decorative panel main body 30, motor 43 for driving four wind direction plates 5 respectively, and motor 43 as decorative panel The four motor covers 44 that also serve as motor fixing tools that are fixed to the main body 30, the panel heat insulating member 45 that forms the inner wall of the air outlet 31, and the suction grill 40 are received, and the panel heat insulating member 45 is fixed to the decorative panel main body 30. The suction grill frame 46 also serves as a fixture.

<Makeup panel body>
As shown in FIG. 5, the decorative panel body 30 includes a square-shaped outer frame portion 33, an inner frame portion 34 that houses the suction grill 40 inside the outer frame portion 33, and the outer frame portion 33 and the inner frame. The connection portion 35 that connects the portion 34 and the corner portion 30a of the decorative panel body 30 in a planar shape on the housing 10 side, and an opening formed between the outer frame portion 33, the inner frame portion 34, and the connection portion 35 is formed. It becomes the blower outlet 31 matched with the main body blower outlet 15.

  In addition, a recess 32 a is formed around each outlet 31 and surrounded by the outer frame portion 33 and the inner frame portion 34 and having the connection portion 35 as a bottom surface. And the channel | path 32 for blowing is formed by connecting this recessed part 32a continuously, This channel | path 32 guides the air which blows off from the auxiliary | assistant blowing part 312 mentioned later to the corner of a decorative panel.

<Outer frame>
As shown in FIGS. 5 and 6, the outer frame portion 33 has a decorative surface 331 that is inclined so that the blower 31 side is high and the ceiling surface T1 side is low at a portion corresponding to four sides of the regular square of the decorative panel body 30. The four corners 30 a that connect the decorative surface 331 have attachment portions 332. The decorative panel 3 can be fixed to the housing 10 by screwing the screw hole 332 a of the mounting portion 332 and the mounting bracket 12 of the decorative panel 3. Further, the human detection sensor 26 and the display LED 27 shown in FIG. 3 are attached to any one of the four attachment portions 332.

As shown in FIGS. 5 and 7, the edge surface 333 of the outer frame portion 33 that faces the blowing passage 32 at the outer frame portion 33 is a first straight portion 333 a that is formed in a straight line at the portion that contacts the air outlet 31. A portion connected to the portion 35 includes a second straight portion 333b inclined at 45 degrees with respect to the first straight portion 333a, and an arc portion 333c that connects the first straight portion 333a and the second straight portion 333b with a gentle arc.
As shown in FIGS. 5 and 6, the decorative surface 331, the attachment portion 332, and the edge surface 333 are connected by a curved surface 334 formed in an arc shape. In addition, a bearing 335 is provided at the center of the edge surface 333 so as to project toward the air outlet 31 and support the wind direction plate 5.

<Inner frame>
As shown in FIGS. 5 and 6, the inner frame portion 34 of the decorative panel body 30 includes an inner wall portion 341 that stands upright on the outlet passage 32 side, and a mounting base 342 that is provided on the entire circumference inside the inner wall portion 341. Become.

<Corner panel>
As shown in FIG. 3, the corner panel 41 covers and hides the four attachment portions 332 of the outer frame portion 33. The corner panel 41 is fixed to the decorative panel body 30 by locking the locking claw 411 to the mounting portion 332 of the outer frame portion 33 and is flush with the decorative surface 331. Further, although not shown, the corner panel 41 includes a locking claw on the surface on the mounting portion 332 side.
Further, the person detection sensor 26 and the display LED 27 attached to the attachment portion 332 protrude from the corner panel 41.

<Motor cover>
As shown in FIG. 5 and FIG. 7, motors 43 that respectively rotate the four wind direction plates 5 are disposed in the blowing passage 32 below the connection portion 35 of the decorative panel body 30 (upward in FIG. 7). . The motor 43 is housed in a motor cover 44 that also serves as a motor fixture for fixing to the decorative panel body 30, and is fixed to the connection portion 35 of the blowing passage 32 together with the motor cover 44.
As a result, a space for mounting the motor 43 is secured, and it is possible to attach and remove the motor 43 from the surface of the decorative panel. For example, it is not necessary to remove the decorative panel 3 from the housing 10 during maintenance of the motor 43, thereby improving workability. .
The motor cover 44 abuts on the edge surface 333 of the outer frame portion 33, becomes symmetrical with respect to the diagonal D of the decorative panel 3, and has symmetrical motor storage portions 442 for storing the motor 43 on both the left and right sides. Prepare. The motor housing portion 442 has a higher outlet 31 side and a lower inner side of the blowout passage 32 and a diagonal line D side of the decorative panel 3, and the diagonal line of the decorative panel 3 is between two symmetrical motor storage portions 442 and 442. D has a bottom passage 441 parallel to D.
Further, as shown in FIGS. 5 to 7, the motor storage portion 442 forms a wall surface 444 on the outlet 31 side. In addition, an inclined surface 442 a is provided on the side opposite to the outer frame portion 33. The inclination angle of the inclined surface 442a is about 60 degrees. The wall surface 444 of the motor storage portion 442 that stores the motor 43 has a bearing 431 of the motor 43, and the other has a bearing 445 of a shaft portion 521 of the wind direction plate 5 described later.

<Panel insulation material>
As shown in FIG. 3, a panel heat insulating member 45 is provided on the suction grill 40 side of the blowing passage 32. Further, as shown in FIG. 6, the panel heat insulating member 45 is provided with a curved surface 453 on the outlet passage 32 side, thereby serving as an outlet guide for guiding the air W blown from the outlet 31 toward the air-conditioned room K. .
As shown in FIG. 5, the panel heat insulating member 45 is formed by combining four so-called L-shaped panel heat insulating member pieces 45 a in which a long side portion 454 and a short side portion 455 intersect at a right angle at a corner portion 452. Moreover, the panel heat insulation member piece 45a engages with each other's contact surface 451 in the vicinity of the edge part of the blower outlet 31 shown in FIG. By aligning the panel heat insulating member piece 45a in the vicinity of the end portion of the air outlet 31, even if a slight misalignment occurs in the joint, there is little influence on the blown air W, and in the place where it becomes a shadow of the motor cover 44. The joint does not stand out by being positioned.
Also in the corner portion 452 of the panel heat insulating member 45 that abuts the motor cover 44, the curved surface 453 is provided on the outlet passage 32 side, so that it serves as a blowing guide that guides the auxiliary blowing air W2 to the corner corner blowing portion 36 described later. .

<Suction grill frame>
As shown in FIGS. 5 and 6, the panel heat insulating member 45 is sandwiched and fixed between the suction grille frame 46 and the inner wall portion 341 of the inner frame portion 34 of the decorative panel body 30. The suction grill frame 46 includes a decorative surface 461 that surrounds the suction grill 40 in a frame shape and is flush with the suction grill 40, and a receiving portion 462 that is provided with a step inside the decorative surface 461 and receives the suction grill 40. The part 462 is fixed to the mounting base 342 of the inner frame part 34 of the decorative panel body 30 with screws. As a result, the panel heat insulating member 45 is sandwiched between the decorative panel body 30 and the suction grille frame 46. As described above, the panel heat insulating member 45 is sandwiched and fixed between the suction grille frame 46 and the decorative panel main body 30, so that it is assembled with a simple structure, the assemblability is improved, and it is necessary to provide a heat insulating material for each outlet. There are no parts costs.
The suction grill frame 46 is a regular square, and is provided with a tapered surface 464 along a wind direction plate 5 described later at a corner of the outlet passage 32 side.

<Suction grill>
As shown in FIGS. 1 to 4, a rectangular suction grill 40 having a plurality of dot-like suction holes 401 is detachably attached to the suction grill frame 46 for taking air into the suction port 16. . A dust removal filter 42 is detachably held on the back surface (upper surface in FIG. 2) of the suction grill 40.
As shown in FIGS. 3 and 5, two rotation shafts 402 are provided on one side of the periphery of the suction grill 40. A stopper 403 is provided on the back side of the suction grill 40. Bearing portions 343 and 463 are provided on the inner wall portion 341 of the inner frame portion 34 of the decorative panel body 30 and the receiving portion 462 of the suction grille frame 46 so as to pivotally support the rotary shaft 402 of the suction grille 40. Further, the fastener 403 is engaged with a fastener hole 342 a provided in the mounting base 342 of the inner frame portion 34 of the decorative panel body 30. As a result, the suction grill 40 can be removed after the rotating shaft 402 is rotated by the bearing portions 343 and 463 and is rotated, and the stopper 403 is locked by the stopper hole 342a. By this, it is fixed to the decorative panel body 30.

<Busting passage>
When the parts constituting the decorative panel 3 are combined with the blowing passage 32, the outer wall is the edge surface 333 and the curved surface 334 of the outer frame portion 33 of the decorative panel main body 30, and the inner wall is the decorative panel main body 30 as described above. The panel heat insulating member 45 is sandwiched and fixed between the inner wall portion 341 of the inner frame portion 34 and the suction grille frame 46, and the bottom surface includes the air outlet 31 and the motor cover 55.

<Wind direction plate>
As shown in FIGS. 1 and 4, the wind direction plate 5 is aligned with the blowing passage 32 provided on the entire periphery so as to surround the suction grill 40 on the decorative panel 3, and the entire blowing passage 32 is covered with the wind direction plate 5. Provided. The four wind direction plates 5 have the same shape, and the adjacent wind direction plates 5 form a gap that matches the square diagonal D of the decorative panel 3.

  As shown in FIGS. 2 and 6, in the decorative panel 3, the suction grill 40 and the suction grille frame 46 are raised toward the air-conditioned room K side. The suction grille frame 46 is gently inclined from the outlet passage 32 side to the decorative surface 331 of the outer frame portion 33 of the decorative panel body 30. In accordance with this inclination, the wind direction plate 5 is also formed so that the suction grille frame 46 side is high and the edge surface 333 side of the outer frame part 33 is low.

  The wind direction plate 5 is longer than the long side of the outlet 31. As shown in FIGS. 4 and 8B, a portion facing the air outlet 31 is a wind direction portion 51, and a portion facing the blowing passage 32 (motor cover 44) at the end of the air direction portion 51 is an auxiliary air direction portion. 52. Moreover, the 1st edge part 54 arrange | positioned in the suction grille 40 side in the outer periphery of the wind direction board 5, and the outer frame part 33 side (outside) facing the 1st edge part 54 are made into the 2nd edge part 55, The second side portion 55 includes a straight portion 551 aligned with the outlet 31 and an inclined portion 553 that is inclined from both ends of the straight portion 551 in the end direction of the first side portion 54.

Further, a third side portion 53 that is parallel to the inclined portion 553 of the second side portion 55 is provided at the end of the first side portion 54 of the wind direction plate 5, and the inclined portion extends from one end of the inclined portion 553 on the adjacent wind direction plate 5 side. A fourth side that rises perpendicularly to 553 and is connected to the third side 3 is provided.
In the following description, the surface that appears on the decorative panel 3 side when the operation is stopped shown in FIG. 8B is the front surface 57, and the back side of the front surface 57 shown in FIG.

  As shown in FIG. 4 and FIG. 8B, the wind direction portion 51 is aligned with the outlet 31 and the first side portion 54 and the second side portion 55 of the wind direction portion 51 are parallel straight lines, as shown in FIG. Thus, the surface 57 has a gentle curve that bulges outward.

As shown in FIG. 8B, the auxiliary wind direction portion 52 is a straight line in which the first side portion 54 is continuous from the wind direction portion 51, and is parallel to the inclined portion 553 of the second side portion 55 at the end of the first side portion 54. A third side 53 is provided. Further, a side connecting the both ends of the second side 55 and the both ends of the third side 53 perpendicular to the second side 55 is the fourth side.
In addition, the 1st edge part 54 and the 3rd edge part 53 of the wind direction board 5 which were demonstrated above are the shapes match | combined with the suction grill frame 46 shown in FIG. 7 and the first straight portion 333a of the edge surface 333 of the outer frame portion 33 of the decorative panel body 30 shown in FIG. 7, the inclined portion 553 is aligned with the second straight portion 333b of the edge surface 333 of the outer frame portion 33, and the straight portion 551. A second arc portion 552 that is combined with the arc portion 333 c of the edge surface 333 of the outer frame portion 33 is provided between the inclined portions 553.

  Further, at the end of the fourth side portion 56, the connection portion between the first side portion 54 or the third side portion 53 and the second side portion 55 is formed in a rounded shape so as not to contact the adjacent wind direction plate 5 during rotation. The

  In the front view of FIG. 8B, the tip of the auxiliary wind direction portion 52 appears to be thinner than the wind direction portion 51, but as shown in the side view of FIG. The height of the side portion 55 is parallel, and the surface of the auxiliary wind direction portion 52 has an angle perpendicular to the surface of the wind direction portion 51.

  On the back surface 58 of the wind direction portion 51 of the wind direction plate 5, a bearing 335 that protrudes from the outer frame portion 33 of the decorative panel body 30 shown in FIGS. A shaft portion 511 that supports the shaft, a shaft portion 521 that supports the bearing 445 of the motor cover 44, and a shaft portion 522 that supports the motor bearing 431 in the motor cover 44 are provided on the back surface 58 of the auxiliary wind direction portion 52.

<When operation is stopped>
When the operation of the air conditioner 1 is stopped, as shown in FIGS. 1 and 4, the blowout passage 32 (recessed portion 32 a) surrounds the suction grille 40, and the adjacent four wind direction plates 5 surround the suction grille. By covering the entire blowing passage 32 that surrounds the air outlet 31, the air outlet 31 and the wind direction plate 5 are visually recognized in a line parallel to the decorative panel and the suction grille, and a sense of unity is born and the design is improved.

<During operation>
When the air conditioner 1 starts operation, the motor 43 pivotally supports the motor bearing 431 as shown in FIGS. 9 and 10 to rotate the shaft portion 522 of the wind direction plate 5. As a result, the shaft portions 511 and 521 are also rotated and the first side portion 54 side of the wind direction plate 5 is rotated toward the blowing passage 32. The wind direction plate 5 rotates up to about 60 degrees.

  When the wind direction plate 5 rotates, the first side 54 on the suction grill 40 side moves into the blowing passage 32, and the third side 53 and the fourth side 56 sink into the bottom passage 441 of the motor cover 44. Only the straight part 551, a part of the inclined part 553, and the second arc part 552 in the second side part 55 of the wind direction plate 5 protrude from the decorative panel body 30. Therefore, the end portion of the wind direction plate 5 does not appear to protrude, and the design is excellent in aesthetic appearance without making the wind direction plate 5 conspicuous even during operation.

  Further, as shown in FIG. 10, the space between the back surface 58 of the wind direction plate 5 and the inclined surface 442 a of the motor cover 44 becomes narrow, and the wind does not easily pass. Therefore, the blower outlet 31 includes the back surface 58 of the wind direction plate 5, the wall surface 444 of the motor housing portion 442 of the motor cover 44, the main blowout portion 311 surrounded by the edge surface 333 and the curved surface 334 of the outer frame portion 33, The auxiliary blowout portion 312 between the surface 57 and the panel heat insulating member 45 is divided. The auxiliary blowing unit 312 is connected to the blowing passage 32.

  As shown in FIG. 2, the air blown from the blower fan 23 has a large amount of air blown at a high wind speed on the hub 23 a side of the blower fan 23. Therefore, in the air blowing path 17, the amount of air flowing toward the heat insulating member 14 is large, so most of the air W passing through the air outlet 31 is blown out vigorously as air W <b> 1 from the main blowout portion 311 to the air-conditioned room K.

  On the other hand, the air blown out from the auxiliary blowing unit 312 tends to spread because the wind speed is slow. Accordingly, a part of the blown-out air W2 is guided to the corners of the blowing passage 32 along the space between the surface 57 of the auxiliary wind direction portion 52 of the wind direction plate 5 and the blowing passage 32 as shown in FIGS. It is burned.

There is a bottom passage 441 of the motor cover 44 at the corner of the adjacent wind direction plate 5 and the outlet passage 32, and the corner corner outlet 36 is formed by the auxiliary wind direction portion 52 of the adjacent wind direction plate 5.
The air W2 guided to the auxiliary wind direction portion 52 of the wind direction plate 5 and reaching the corner of the blowout passage 32 joins with the air W2 guided from the adjacent wind direction plate 5 in the bottom passage 441 of the motor cover 44.
The merged air W2 is blown out in a direction in which space is available. However, there is a curved surface 453 of the panel heat insulating member 45 on the suction grill 40 side, while the third side portion 53 and the fourth side portion 56 at the tip of the auxiliary wind direction portion 52 of the wind direction plate 5 sink into the bottom passage 441. As a result, the frontage opens widely to the outside of the diagonal line D. Thereby, the merged air W2 is blown out to the outside of the diagonal line D.

  Further, the surface 57 of the auxiliary wind direction portion 52 of the wind direction plate 5 has an angle closer to the horizontal direction than the surface 57 of the wind direction portion 51, so that the air W <b> 2 blows out from the surface of the auxiliary wind direction portion 52 of the wind direction plate 5 in a wide range. Will be.

With the above configuration, even if the decorative panel 3 is not provided with an auxiliary air outlet, the air W <b> 2 blown out from the auxiliary air outlet 312 flows between the auxiliary air direction portion 52 of the wind direction plate 5 and the air outlet passage 32. There are bottom passages 441 at the corners of the adjacent wind direction plate 5 and the blowout passage 32, and the air W2 guided from the adjacent wind direction plate 5 joins the bottom passage 441.
Since the merged air W2 is blown out in the direction in which the space is vacant, it is blown out of the decorative panel 30 from the tip of the auxiliary wind direction portion 52 of the adjacent wind direction plate 5, as in the conventional example. Without providing an auxiliary air outlet, it is possible to blow air in all directions, and it becomes a ceiling embedded type air conditioner that efficiently air-conditions a large room.

1: ceiling-embedded air conditioner (air conditioner), 10: housing, 15: main body outlet, 16: suction port 23: blower fan, 25: heat exchanger 3: decorative panel, 30: decorative panel main body , 31: outlet, 311: main outlet, 312: auxiliary outlet, 32: passage for outlet, 33: outer frame, 34: inner frame, 35: connection, 36: corner corner outlet 40: suction Grill: 41: Corner panel, 43: Motor, 44: Motor cover, 441: Bottom passage, 442: Motor housing part, 45: Panel heat insulating member, 451: Contact surface, 452: Corner part, 453: Curved surface, 46 : Suction grille frame 5: wind direction plate, 51: wind direction portion, 52: auxiliary wind direction portion, 53: third side portion, 54: first side portion, 55: second side portion, 56: fourth side portion, 57: Front surface 58: Back surface 60: Drain pan D: Diagonal line, K: Air conditioning room, T1 ceiling surface, W Air

Claims (3)

It consists of a box-shaped casing embedded in the ceiling of the air-conditioning room and a rectangular decorative panel that is attached to the lower surface of the casing and covers the ceiling, and the casing surrounds the blower fan and the blower fan in the center of the interior A heat exchanger and a drain pan at the bottom are provided, and the drain pan is provided with a suction port for taking air into the blower fan and a main body outlet for blowing out the heat exchanged air along each of the box-shaped four sides of the housing In the ceiling-embedded air conditioner in which the decorative panel is provided with a suction grill matched to the suction inlet and a blower outlet matched to the main body outlet,
The decorative panel is provided with a recess around each of the air outlets, and a continuous passage is formed to form an outlet passage, which is longer than the long side of the air outlet along each side of the decorative panel. And providing a wind direction plate covering the outlet passage,
On the suction grille side of the outlet passage, four L-shaped panel heat insulating member pieces are combined to form a panel heat insulating member and attached,
The panel heat insulating member is fixed by being sandwiched and fixed between a suction grille frame that receives the suction grille and the decorative panel. 2. The ceiling-embedded air conditioner according to claim 1, wherein the panel heat insulating member pieces engage with each other in the vicinity of an end of the air outlet. The ceiling-embedded air conditioner according to claim 1 , wherein the panel heat insulating member is provided with a curved surface on the blowing passage side.

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